CN116061639A - Vehicle thermal management system and vehicle thermal management method - Google Patents

Abstract

The invention discloses a vehicle thermal management system and a vehicle thermal management method, wherein the vehicle thermal management system comprises a heat pump air conditioning system, a battery temperature control system, an electric drive cooling system and a seven-way valve; the battery temperature control system comprises a power battery branch and a heating evaporation branch; the heat pump air conditioning system is connected with the heating evaporation branch; the power battery branch, the heating evaporation branch and the electric drive cooling system are connected through a seven-way valve, the valve working state of the seven-way valve is switched, and the target working mode is determined. According to the invention, the valve working state of the seven-way valve is switched, so that the switching of different working modes can be realized, and the redundant heat can be flexibly transferred among the heat pump air conditioning system, the battery temperature control system and the electric drive cooling system, so that the redundant heat is effectively used, the energy is saved, the energy loss is reduced, and the energy loss can be effectively reduced.

Description

Translated fromChinese

车辆热管理系统和车辆热管理方法Vehicle thermal management system and vehicle thermal management method

技术领域technical field

本发明涉及车辆热管理技术领域，尤其涉及一种车辆热管理系统和车辆热管理方法。The invention relates to the technical field of vehicle thermal management, in particular to a vehicle thermal management system and a vehicle thermal management method.

背景技术Background technique

常见的车辆热管理系统中包含三个独立的系统：电驱动冷却系统、动力电池温控系统、空调系统。低温环境下，热泵空调系统蒸发器和动力电池系统需要吸收热量，电驱动系统、动力电池工作过程中会发热，为保证零件正常工作，常通过换热器将余热排放到环境中，无法有效利用；且现有技术中车辆热管理系统的结构复杂，成本较高。A common vehicle thermal management system consists of three independent systems: electric drive cooling system, power battery temperature control system, and air conditioning system. In a low temperature environment, the evaporator of the heat pump air-conditioning system and the power battery system need to absorb heat, and the electric drive system and power battery will generate heat during operation. In order to ensure the normal operation of the parts, the waste heat is often discharged into the environment through the heat exchanger, which cannot be effectively used ; And the vehicle thermal management system in the prior art has a complex structure and high cost.

发明内容Contents of the invention

本发明实施例提供一种车辆热管理系统和车辆热管理方法，以解决余热无法有效利用的问题。Embodiments of the present invention provide a vehicle thermal management system and a vehicle thermal management method to solve the problem that residual heat cannot be effectively utilized.

一种车辆热管理系统，包括热泵空调系统、电池温控系统、电驱动冷却系统和七通阀；所述电池温控系统包括动力电池支路和加热蒸发支路；所述热泵空调系统和所述加热蒸发支路相连；所述动力电池支路、所述加热蒸发支路和所述电驱动冷却系统通过所述七通阀相连，切换所述七通阀的阀门工作状态，确定目标工作模式；A vehicle thermal management system, including a heat pump air conditioning system, a battery temperature control system, an electric drive cooling system and a seven-way valve; the battery temperature control system includes a power battery branch and a heating evaporation branch; the heat pump air conditioning system and the The heating and evaporating branch is connected; the power battery branch, the heating and evaporating branch and the electric drive cooling system are connected through the seven-way valve, and the valve working state of the seven-way valve is switched to determine the target working mode ;

所述目标工作模式包括第一工作模式、第二工作模式或者第三工作模式；The target working mode includes a first working mode, a second working mode or a third working mode;

所述第一工作模式为所述电驱动冷却系统和所述加热蒸发支路通过所述七通阀连通形成回路，且所述动力电池支路通过所述七通阀形成回路的工作模式；The first working mode is a working mode in which the electrically driven cooling system and the heating evaporation branch are connected to form a circuit through the seven-way valve, and the power battery branch forms a circuit through the seven-way valve;

所述第二工作模式为所述电驱动冷却系统和所述动力电池支路通过所述七通阀连通形成回路，且所述加热蒸发支路通过所述七通阀形成回路的工作模式；The second working mode is a working mode in which the electrically driven cooling system and the branch circuit of the power battery are connected to form a circuit through the seven-way valve, and the heating and evaporation branch forms a circuit through the seven-way valve;

所述第三工作模式为所述加热蒸发支路和所述动力电池支路通过所述七通阀连通形成回路，且所述电驱动冷却系统通过所述七通阀形成回路的工作模式。The third working mode is a working mode in which the heating evaporation branch and the power battery branch are connected to form a circuit through the seven-way valve, and the electrically driven cooling system forms a circuit through the seven-way valve.

优选地，所述电驱动冷却系统包括隔离散热支路和连通散热支路；Preferably, the electric drive cooling system includes an isolated heat dissipation branch and a connected heat dissipation branch;

所述第一工作模式包括第一隔离模式和第一连通模式；所述第一隔离模式为所述隔离散热支路与所述加热蒸发支路通过所述七通阀连通形成回路的工作模式，且所述动力电池支路通过所述七通阀形成回路的工作模式；所述第一连通模式为所述连通散热支路与所述加热蒸发支路通过所述七通阀连通形成回路，且所述动力电池支路通过所述七通阀形成回路的工作模式；The first working mode includes a first isolation mode and a first communication mode; the first isolation mode is a working mode in which the isolated heat dissipation branch communicates with the heating evaporation branch through the seven-way valve to form a circuit, And the working mode in which the power battery branch forms a circuit through the seven-way valve; the first communication mode is that the communicating heat dissipation branch and the heating and evaporating branch are connected to form a circuit through the seven-way valve, and The working mode in which the power battery branch forms a circuit through the seven-way valve;

所述第二工作模式包括第二隔离模式和第二连通模式；所述第二隔离模式为所述隔离散热支路与所述动力电池支路通过所述七通阀连通形成回路的工作模式，且所述加热蒸发支路通过所述七通阀形成回路的工作模式；所述第二连通模式为所述连通散热支路与所述动力电池支路通过所述七通阀连通形成回路，且所述加热蒸发支路通过所述七通阀形成回路的工作模式；The second working mode includes a second isolation mode and a second communication mode; the second isolation mode is a working mode in which the isolated cooling branch and the power battery branch are connected through the seven-way valve to form a circuit, And the working mode in which the heating and evaporation branch forms a circuit through the seven-way valve; the second communication mode is that the communication cooling branch and the power battery branch are connected to form a circuit through the seven-way valve, and The working mode in which the heating evaporation branch forms a circuit through the seven-way valve;

所述第三工作模式包括第三隔离模式和第三连通模式；所述第三隔离模式为所述加热蒸发支路与所述动力电池支路通过所述七通阀连通形成回路的工作模式，且所述隔离散热支路通过所述七通阀形成回路的工作模式；所述第三连通模式为所述加热蒸发支路与所述动力电池支路通过所述七通阀连通形成回路，且所述连通散热支路通过所述七通阀形成回路的工作模式。The third working mode includes a third isolation mode and a third communication mode; the third isolation mode is a working mode in which the heating and evaporation branch communicates with the power battery branch through the seven-way valve to form a circuit, And the working mode in which the isolated heat dissipation branch forms a circuit through the seven-way valve; the third communication mode is that the heating and evaporation branch is connected with the power battery branch to form a circuit through the seven-way valve, and The communicating heat dissipation branch forms a working mode of a circuit through the seven-way valve.

优选地，所述隔离散热支路包括相互连接的驱动电动水泵和电机总成；Preferably, the isolated cooling branch includes an interconnected driving electric water pump and motor assembly;

所述连通散热支路包括相互连接的驱动电动水泵、电机总成和散热器；所述散热器一端与所述电机相连，另一端与所述七通阀相连。The communicating heat dissipation branch includes a driving electric water pump, a motor assembly and a radiator connected to each other; one end of the radiator is connected to the motor, and the other end is connected to the seven-way valve.

优选地，所述加热蒸发支路包括相互连接的加热蒸发器、PTC加热器和蒸发电动水泵。Preferably, the heating and evaporating branch circuit includes a heating evaporator, a PTC heater and an evaporating electric water pump connected to each other.

优选地，所述热泵空调系统包括压缩机、冷凝器、加热蒸发器、储液罐和阀门组件；所述阀门组件包括第二截止阀和第三电子膨胀阀；Preferably, the heat pump air-conditioning system includes a compressor, a condenser, a heating evaporator, a liquid storage tank, and a valve assembly; the valve assembly includes a second cut-off valve and a third electronic expansion valve;

所述压缩机的一端与所述冷凝器连接，另一端与所述储液罐连接；One end of the compressor is connected to the condenser, and the other end is connected to the liquid storage tank;

所述第二截止阀的一端与所述冷凝器连接，另一端与所述第三电子膨胀阀连接；One end of the second stop valve is connected to the condenser, and the other end is connected to the third electronic expansion valve;

所述加热蒸发器的一端与第三电子膨胀阀连接，另一端与所述储液罐连接。One end of the heating evaporator is connected to the third electronic expansion valve, and the other end is connected to the liquid storage tank.

优选地，所述热泵空调系统还包括外部换热器；所述阀门组件还包括第一电子膨胀阀和第一截止阀；Preferably, the heat pump air-conditioning system further includes an external heat exchanger; the valve assembly further includes a first electronic expansion valve and a first stop valve;

所述第一电子膨胀阀的一端与所述冷凝器连接，另一端与所述外部换热器连接；One end of the first electronic expansion valve is connected to the condenser, and the other end is connected to the external heat exchanger;

所述第一截止阀的一端与所述外部换热器连接，另一端与所述储液罐连接。One end of the first stop valve is connected to the external heat exchanger, and the other end is connected to the liquid storage tank.

优选地，所述热泵空调系统还包括冷却风扇，所述冷却风扇与所述散热器和所述外部换热器相对设置。Preferably, the heat pump air-conditioning system further includes a cooling fan, and the cooling fan is arranged opposite to the radiator and the external heat exchanger.

优选地，所述热泵空调系统还包括冷却蒸发器；所述阀门组件包括单向阀和第二电子膨胀阀；Preferably, the heat pump air conditioning system further includes a cooling evaporator; the valve assembly includes a check valve and a second electronic expansion valve;

所述单向阀的入口端与所述外部换热器相连，出口端与所述第二电子膨胀阀和所述第三电子膨胀阀相连；The inlet port of the one-way valve is connected to the external heat exchanger, and the outlet port is connected to the second electronic expansion valve and the third electronic expansion valve;

所述冷却蒸发器与所述第二电子膨胀阀连接，另一端与所述储液罐连接。The cooling evaporator is connected with the second electronic expansion valve, and the other end is connected with the liquid storage tank.

优选地，所述热泵空调系统还包括鼓风机，所述鼓风机与所述冷凝器和所述冷却蒸发器相对设置，且位于乘员舱的进风口。Preferably, the heat pump air-conditioning system further includes a blower, the blower is arranged opposite to the condenser and the cooling evaporator, and is located at the air inlet of the passenger compartment.

一种车辆热管理方法，应用在如上所述车辆热管理系统中，包括：A vehicle thermal management method, applied in the above-mentioned vehicle thermal management system, comprising:

采集车辆当前数据；Collect current vehicle data;

根据所述车辆当前数据，切换所述七通阀的阀门工作状态，确定目标工作模式；According to the current data of the vehicle, switch the valve working state of the seven-way valve to determine the target working mode;

根据所述目标工作模式，控制与所述目标工作模式相对应的目标执行器件工作。According to the target working mode, the target execution device corresponding to the target working mode is controlled to work.

优选地，所述根据所述车辆当前数据，切换所述七通阀的阀门工作状态，确定目标工作模式，包括：Preferably, the switching of the valve working state of the seven-way valve according to the current data of the vehicle to determine the target working mode includes:

所述车辆当前数据包括环境实际温度、所述动力电池支路对应的电池实际温度和电机总成对应的驱动发热量；The current data of the vehicle includes the actual temperature of the environment, the actual temperature of the battery corresponding to the branch of the power battery, and the corresponding driving calorific value of the motor assembly;

所述根据所述车辆当前数据，切换所述七通阀的阀门工作状态，确定目标工作模式，包括：According to the current data of the vehicle, switching the valve working state of the seven-way valve to determine the target working mode includes:

若所述环境实际温度小于第一环境温度、所述电池实际温度在第一电池温度和第二电池温度之间、且所述驱动发热量不小于第一发热量，则切换所述七通阀的阀门工作状态，将第一工作模式确定为所述目标工作模式；If the actual temperature of the environment is lower than the first ambient temperature, the actual temperature of the battery is between the first battery temperature and the second battery temperature, and the driving calorific value is not less than the first calorific value, switch the seven-way valve The working state of the valve, determining the first working mode as the target working mode;

所述根据所述目标工作模式，控制与所述目标工作模式相对应的目标执行器件工作，包括：The controlling the operation of the target execution device corresponding to the target operating mode according to the target operating mode includes:

根据所述第一工作模式，控制所述热泵空调系统中的冷凝器进行加热、控制所述电驱动冷却系统中的散热器切换工作状态、且控制所述加热蒸发支路中的加热蒸发器切换工作状态。According to the first working mode, the condenser in the heat pump air-conditioning system is controlled to be heated, the radiator in the electric drive cooling system is controlled to switch working states, and the heating evaporator in the heating evaporation branch is controlled to switch working status.

优选地，所述若所述环境实际温度小于第一环境温度、所述电池实际温度在第一电池温度和第二电池温度之间、且所述驱动发热量不小于第一发热量，则切换所述七通阀的阀门工作状态，将第一工作模式确定为所述目标工作模式，包括：Preferably, if the actual temperature of the environment is lower than the first ambient temperature, the actual temperature of the battery is between the first battery temperature and the second battery temperature, and the driving calorific value is not less than the first calorific value, switch The valve working state of the seven-way valve determines the first working mode as the target working mode, including:

若所述环境实际温度小于第一环境温度、所述电池实际温度在第一电池温度和第二电池温度之间、且所述驱动发热量大于第二发热量，则切换所述七通阀的阀门工作状态，将第一隔离模式确定为所述目标工作模式；If the actual temperature of the environment is lower than the first ambient temperature, the actual temperature of the battery is between the first battery temperature and the second battery temperature, and the driving calorific value is greater than the second calorific value, switch the seven-way valve The working state of the valve, determining the first isolation mode as the target working mode;

若所述环境实际温度小于第一环境温度、所述电池实际温度在第一电池温度和第二电池温度之间、且所述驱动发热量在第一发热量和第二发热量之间，则切换所述七通阀的阀门工作状态，将第一连通模式确定为所述目标工作模式。If the actual temperature of the environment is lower than the first ambient temperature, the actual temperature of the battery is between the first battery temperature and the second battery temperature, and the driving heat generation is between the first heat generation and the second heat generation, then switching the valve working state of the seven-way valve, and determining the first communication mode as the target working mode.

优选地，所述根据所述车辆当前数据，切换所述七通阀的阀门工作状态，确定目标工作模式，包括：Preferably, the switching of the valve working state of the seven-way valve according to the current data of the vehicle to determine the target working mode includes:

所述车辆当前数据包括环境实际温度、所述动力电池支路对应的电池实际温度、电机总成对应的驱动发热量和散热器需求；The current data of the vehicle includes the actual temperature of the environment, the actual temperature of the battery corresponding to the power battery branch, the driving calorific value corresponding to the motor assembly, and the radiator demand;

所述根据所述车辆当前数据，切换所述七通阀的阀门工作状态，确定目标工作模式，包括：According to the current data of the vehicle, switching the valve working state of the seven-way valve to determine the target working mode includes:

若所述环境实际温度小于第一环境温度、所述电池实际温度小于第一电池温度、所述驱动发热量大于第二发热量、且所述散热器需求为无需工作，则切换所述七通阀的阀门工作状态，将第二工作模式确定为所述目标工作模式；If the actual temperature of the environment is lower than the first ambient temperature, the actual temperature of the battery is lower than the first battery temperature, the driving calorific value is greater than the second calorific value, and the radiator requires no work, switch the seven channels The valve working state of the valve, determining the second working mode as the target working mode;

或者，or,

若所述环境实际温度小于第一环境温度、所述电池实际温度在第一电池温度和第二电池温度之间、所述驱动发热量小于第一发热量、且所述散热器需求为无需工作，则切换所述七通阀的阀门工作状态，将第二工作模式确定为所述目标工作模式；If the actual temperature of the environment is lower than the first ambient temperature, the actual temperature of the battery is between the first battery temperature and the second battery temperature, the driving calorific value is less than the first calorific value, and the radiator needs no work , then switch the valve working state of the seven-way valve, and determine the second working mode as the target working mode;

或者，or,

若所述环境实际温度在第一环境温度和第二环境温度之间、所述电池实际温度在第二电池温度和第三电池温度之间、所述驱动发热量在第一发热量和第二发热量之间、且所述散热器需求为需工作，则切换所述七通阀的阀门工作状态，将第二工作模式确定为所述目标工作模式；If the actual temperature of the environment is between the first ambient temperature and the second ambient temperature, the actual temperature of the battery is between the second battery temperature and the third battery temperature, and the driving calorific value is between the first calorific value and the second Between the calorific value and the radiator needs to work, switch the valve working state of the seven-way valve, and determine the second working mode as the target working mode;

所述根据所述目标工作模式，控制与所述目标工作模式相对应的目标执行器件工作，包括：The controlling the operation of the target execution device corresponding to the target operating mode according to the target operating mode includes:

根据所述第二工作模式，控制所述热泵空调系统中的冷凝器进行加热或者冷却蒸发器进行冷却、控制所述电驱动冷却系统中的驱动电动水泵切换工作状态、控制所述加热蒸发支路中的加热蒸发器切换工作状态。According to the second working mode, control the condenser in the heat pump air-conditioning system to heat or cool the evaporator to cool, control the driving electric water pump in the electric drive cooling system to switch working states, and control the heating and evaporating branch The heating evaporator in the switchover working state.

优选地，所述车辆热管理方法，包括：Preferably, the vehicle thermal management method includes:

若所述环境实际温度小于第一环境温度、所述电池实际温度小于第一电池温度、所述驱动发热量大于第二发热量、且所述散热器需求为无需工作，或者，若所述环境实际温度小于第一环境温度、所述电池实际温度在第一电池温度和第二电池温度之间、所述驱动发热量小于第一发热量、且所述散热器需求为无需工作，则切换所述七通阀的阀门工作状态，将第二隔离模式确定为所述目标工作模式；If the actual temperature of the environment is lower than the first ambient temperature, the actual temperature of the battery is lower than the first battery temperature, the driving calorific value is greater than the second calorific value, and the radiator requires no work, or, if the environmental If the actual temperature is lower than the first ambient temperature, the actual temperature of the battery is between the first battery temperature and the second battery temperature, the driving calorific value is less than the first calorific value, and the radiator requires no work, then switch the The valve working state of the above-mentioned seven-way valve, and the second isolation mode is determined as the target working mode;

若所述环境实际温度在第一环境温度和第二环境温度之间、所述电池实际温度在第二电池温度和第三电池温度之间、所述驱动发热量在第一发热量和第二发热量之间、且所述散热器需求为需工作，则切换所述七通阀的阀门工作状态，将第二连通模式确定为所述目标工作模式。If the actual temperature of the environment is between the first ambient temperature and the second ambient temperature, the actual temperature of the battery is between the second battery temperature and the third battery temperature, and the driving calorific value is between the first calorific value and the second If the calorific value is between and the radiator needs to work, switch the valve working state of the seven-way valve, and determine the second communication mode as the target working mode.

优选地，所述根据所述车辆当前数据，切换所述七通阀的阀门工作状态，确定目标工作模式，包括：Preferably, the switching of the valve working state of the seven-way valve according to the current data of the vehicle to determine the target working mode includes:

所述车辆当前数据包括环境实际温度、所述动力电池支路对应的电池实际温度、电机总成对应的驱动发热量和散热器需求；The current data of the vehicle includes the actual temperature of the environment, the actual temperature of the battery corresponding to the power battery branch, the driving calorific value corresponding to the motor assembly, and the radiator demand;

所述根据所述车辆当前数据，切换所述七通阀的阀门工作状态，确定目标工作模式，包括：According to the current data of the vehicle, switching the valve working state of the seven-way valve to determine the target working mode includes:

若所述环境实际温度小于第一环境温度、所述电池实际温度小于第一电池温度、所述驱动发热量在第一发热量和第二发热量之间、且所述散热器需求为无需工作，则切换所述七通阀的阀门工作状态，将第三工作模式确定为所述目标工作模式；If the actual temperature of the environment is lower than the first ambient temperature, the actual temperature of the battery is lower than the first battery temperature, the driving calorific value is between the first calorific value and the second calorific value, and the radiator requirement is no need to work , then switch the valve working state of the seven-way valve, and determine the third working mode as the target working mode;

或者，or,

若所述环境实际温度小于第一环境温度、所述电池实际温度小于第一电池温度、所述驱动发热量大于第二发热量、且所述散热器需求为需工作，则切换所述七通阀的阀门工作状态，将第三工作模式确定为所述目标工作模式；If the actual temperature of the environment is lower than the first ambient temperature, the actual temperature of the battery is lower than the first battery temperature, the driving calorific value is greater than the second calorific value, and the radiator needs to work, switch the seven channels The valve working state of the valve, determining the third working mode as the target working mode;

或者，or,

若所述环境实际温度小于第一环境温度、所述电池实际温度大于第三电池温度、且所述驱动发热量不小于第三发热量、且所述散热器需求为需工作或者不工作，则切换所述七通阀的阀门工作状态，将第三工作模式确定为所述目标工作模式；If the actual temperature of the environment is lower than the first ambient temperature, the actual temperature of the battery is greater than the third battery temperature, and the driving calorific value is not less than the third calorific value, and the radiator needs to work or not work, then switch the valve working state of the seven-way valve, and determine the third working mode as the target working mode;

或者，or,

若所述环境实际温度大于第二环境温度、所述电池实际温度大于第三电池温度、所述驱动发热量不小于第一发热量、且所述散热器需求为需工作或者不工作，则切换所述七通阀的阀门工作状态，将第三工作模式确定为所述目标工作模式；If the actual temperature of the environment is greater than the second ambient temperature, the actual temperature of the battery is greater than the third battery temperature, the driving calorific value is not less than the first calorific value, and the radiator needs to work or not work, then switch The valve working state of the seven-way valve determines the third working mode as the target working mode;

根据所述第三工作模式，控制所述热泵空调系统中的冷凝器进行加热、或者冷却蒸发器进行冷却、或者冷凝器和冷却蒸发器不工作；控制所述电驱动冷却系统中的散热器切换工作状态；控制所述加热蒸发支路中的加热蒸发器切换工作状态。According to the third working mode, control the condenser in the heat pump air-conditioning system to heat, or the cooling evaporator to cool, or the condenser and the cooling evaporator to not work; control the radiator switching in the electric drive cooling system Working state: controlling the heating evaporator in the heating evaporation branch to switch the working state.

优选地，所述车辆热管理方法，包括：Preferably, the vehicle thermal management method includes:

若所述环境实际温度小于第一环境温度、所述电池实际温度小于第一电池温度、所述驱动发热量在第一发热量和第二发热量之间、且所述散热器需求为无需工作，则切换所述七通阀的阀门工作状态，将第三隔离模式确定为所述目标工作模式；If the actual temperature of the environment is lower than the first ambient temperature, the actual temperature of the battery is lower than the first battery temperature, the driving calorific value is between the first calorific value and the second calorific value, and the radiator requirement is no need to work , then switch the valve working state of the seven-way valve, and determine the third isolation mode as the target working mode;

若所述环境实际温度小于第一环境温度、所述电池实际温度小于第一电池温度、所述驱动发热量大于第二发热量、且所述散热器需求为需工作，则切换所述七通阀的阀门工作状态，将第三连通模式确定为所述目标工作模式；If the actual temperature of the environment is lower than the first ambient temperature, the actual temperature of the battery is lower than the first battery temperature, the driving calorific value is greater than the second calorific value, and the radiator needs to work, switch the seven channels The valve working state of the valve, determining the third communication mode as the target working mode;

若所述环境实际温度小于第一环境温度、所述电池实际温度大于第三电池温度、所述驱动发热量在第一发热量和第二发热量之间、且所述散热器需求为无需工作，则切换所述七通阀的阀门工作状态，将第三隔离模式确定为所述目标工作模式；If the actual temperature of the environment is lower than the first ambient temperature, the actual temperature of the battery is greater than the third battery temperature, the driving calorific value is between the first calorific value and the second calorific value, and the radiator requirement is no need to work , then switch the valve working state of the seven-way valve, and determine the third isolation mode as the target working mode;

若所述环境实际温度小于第一环境温度、所述电池实际温度大于第三电池温度、所述驱动发热量大于第二发热量、且所述散热器需求为需工作，则切换所述七通阀的阀门工作状态，将第三连通模式确定为所述目标工作模式；If the actual temperature of the environment is lower than the first ambient temperature, the actual temperature of the battery is greater than the third battery temperature, the driving calorific value is greater than the second calorific value, and the radiator needs to work, switch the seven channels The valve working state of the valve, determining the third communication mode as the target working mode;

若所述环境实际温度大于第二环境温度、所述电池实际温度大于第三电池温度、所述驱动发热量在第一发热量和第二发热量之间、且所述散热器需求为无需工作，则切换所述七通阀的阀门工作状态，将第三隔离模式确定为所述目标工作模式；If the actual temperature of the environment is greater than the second ambient temperature, the actual temperature of the battery is greater than the third battery temperature, the driving calorific value is between the first calorific value and the second calorific value, and the radiator requirement is no need to work , then switch the valve working state of the seven-way valve, and determine the third isolation mode as the target working mode;

若所述环境实际温度大于第二环境温度、所述电池实际温度大于第三电池温度、所述驱动发热量大于第二发热量、且所述散热器需求为需工作，则切换所述七通阀的阀门工作状态，将第三连通模式确定为所述目标工作模式。If the actual temperature of the environment is greater than the second ambient temperature, the actual temperature of the battery is greater than the third battery temperature, the driving calorific value is greater than the second calorific value, and the radiator needs to work, switch the seven channels The valve working state of the valve determines the third communication mode as the target working mode.

优选地，所述根据所述车辆当前数据，切换所述七通阀的阀门工作状态，确定目标工作模式，包括：Preferably, the switching of the valve working state of the seven-way valve according to the current data of the vehicle to determine the target working mode includes:

所述车辆当前数据包括当前温控指令，或者所述车辆当前数据包括当前温控指令和电机总成对应的驱动发热量；The current vehicle data includes the current temperature control command, or the current vehicle data includes the current temperature control command and the corresponding driving heat of the motor assembly;

所述根据所述目标工作模式，控制与所述目标工作模式相对应的目标执行器件工作，包括：The controlling the operation of the target execution device corresponding to the target operating mode according to the target operating mode includes:

若所述当前温控指令为均温温控指令，或者所述车辆当前数据包括当前温控指令和所述电机总成对应的驱动发热量，则切换所述七通阀的阀门工作状态，将第三工作模式确定为所述目标工作模式；If the current temperature control command is a uniform temperature control command, or the current data of the vehicle includes the current temperature control command and the corresponding driving heat of the motor assembly, switch the valve working state of the seven-way valve, and The third working mode is determined as the target working mode;

根据所述第三工作模式，控制所述热泵空调系统中的冷凝器进行加热、或者冷却蒸发器进行冷却、或者冷凝器和冷却蒸发器不工作；控制所述电驱动冷却系统中的散热器切换工作状态；控制所述加热蒸发支路中的加热蒸发器切换工作状态。According to the third working mode, control the condenser in the heat pump air-conditioning system to heat, or the cooling evaporator to cool, or the condenser and the cooling evaporator to not work; control the radiator switching in the electric drive cooling system Working state: controlling the heating evaporator in the heating evaporation branch to switch the working state.

优选地，若所述当前温控指令为均温温控指令，或者所述车辆当前数据包括当前温控指令和所述电机总成对应的驱动发热量，则切换所述七通阀的阀门工作状态，将第三工作模式确定为所述目标工作模式，包括：Preferably, if the current temperature control command is a uniform temperature control command, or the current data of the vehicle includes the current temperature control command and the corresponding driving heat output of the motor assembly, switch the valve operation of the seven-way valve state, determining the third working mode as the target working mode, including:

若所述当前温控指令为均温温控指令，则切换所述七通阀的阀门工作状态，将第三隔离模式确定为所述目标工作模式；If the current temperature control command is a uniform temperature control command, switch the valve working state of the seven-way valve, and determine the third isolation mode as the target working mode;

若所述当前温控指令为均温温控指令，且所述电机总成对应的驱动发热量大于第二发热量，则切换所述七通阀的阀门工作状态，将第三连通模式确定为所述目标工作模式。If the current temperature control command is a uniform temperature control command, and the corresponding driving calorific value of the motor assembly is greater than the second calorific value, switch the valve working state of the seven-way valve, and determine the third connection mode as The target operating mode.

本发明实施例提供一种车辆热管理系统和车辆热管理方法，该车辆热管理系统通过切换七通阀的阀门工作状态，即可实现不同工作模式切换，以便多余热量在热泵空调系统、电池温控系统和电驱动冷却系统之间进行灵活转移，从而有效使用多余热量，节约能源，降低能源损耗，且在电池温控系统和电驱动冷却系统没有产生多余热量时，热泵空调系统可以正常工作，利用热泵空调系统为乘员舱提供热风或者冷风，相比传统需要单独的加热器件或者冷却器件，可有效降低能源损耗。Embodiments of the present invention provide a vehicle thermal management system and a vehicle thermal management method. The vehicle thermal management system can switch between different working modes by switching the valve working state of the seven-way valve, so that excess heat can be transferred to the heat pump air-conditioning system, battery temperature The heat pump air-conditioning system can work normally when the battery temperature control system and the electric drive cooling system do not generate excess heat. Using the heat pump air-conditioning system to provide hot air or cold air to the passenger compartment can effectively reduce energy loss compared with the traditional need for separate heating or cooling devices.

附图说明Description of drawings

为了更清楚地说明本发明实施例的技术方案，下面将对本发明实施例的描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments of the present invention. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention , for those skilled in the art, other drawings can also be obtained according to these drawings without paying creative labor.

图1是本发明一实施例车辆热管理系统的目标工作模式示意图；FIG. 1 is a schematic diagram of a target working mode of a vehicle thermal management system according to an embodiment of the present invention;

图2是本发明一实施例中车辆热管理系统的一结构示意图；FIG. 2 is a schematic structural diagram of a vehicle thermal management system in an embodiment of the present invention;

图3是本发明一实施例提供的车辆热管理方法的一流程图；Fig. 3 is a flowchart of a vehicle thermal management method provided by an embodiment of the present invention;

图4是本发明一实施例提供的车辆热管理方法的另一流程图；Fig. 4 is another flowchart of a vehicle thermal management method provided by an embodiment of the present invention;

图5是本发明一实施例提供的车辆热管理方法的另一流程图；Fig. 5 is another flowchart of a vehicle thermal management method provided by an embodiment of the present invention;

图6是本发明一实施例提供的车辆热管理方法的另一流程图；Fig. 6 is another flowchart of a vehicle thermal management method provided by an embodiment of the present invention;

图7是本发明一实施例提供的车辆热管理方法的另一流程图。Fig. 7 is another flowchart of a vehicle thermal management method provided by an embodiment of the present invention.

附图说明：Description of drawings:

101、第一隔离模式；102、第一连通模式；103、第二隔离模式；104、第二连通模式；105、第三隔离模式；106、第三连通模式；101. First isolation mode; 102. First connection mode; 103. Second isolation mode; 104. Second connection mode; 105. Third isolation mode; 106. Third connection mode;

1、压缩机；2、冷凝器；3、第一电子膨胀阀；4、外部换热器；5、第一截止阀；6、单向阀；7、第二截止阀；8、第二电子膨胀阀；9、冷却蒸发器；10、第三电子膨胀阀； 11、加热蒸发器；12、储液罐；13、七通阀；14、动力电池；15、蒸发电动水泵；16、PTC 加热器；17、驱动电动水泵；18、充电机；19、电机；20、散热器；21、鼓风机；22、冷却风扇。1. Compressor; 2. Condenser; 3. First electronic expansion valve; 4. External heat exchanger; 5. First stop valve; 6. One-way valve; 7. Second stop valve; 8. Second electronic Expansion valve; 9. Cooling evaporator; 10. Third electronic expansion valve; 11. Heating evaporator; 12. Liquid storage tank; 13. Seven-way valve; 14. Power battery; 15. Evaporating electric water pump; 16.PTC heating 17. Drive electric water pump; 18. Charger; 19. Motor; 20. Radiator; 21. Blower; 22. Cooling fan.

具体实施方式Detailed ways

为了使本发明所解决的技术问题、技术方案及有益效果更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

在本发明的描述中，需要理解的是，术语“纵向”、“径向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。在本发明的描述中，除非另有说明，“多个”的含义是两个或两个以上。In describing the present invention, it is to be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", The orientation or positional relationship indicated by "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" etc. is based on the orientation or positional relationship shown in the drawings, It is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

本发明提供一种车辆热管理系统，如图1所示，该车辆热管理系统包括热泵空调系统、电池温控系统、电驱动冷却系统和七通阀13；电池温控系统包括动力电池支路和加热蒸发支路；热泵空调系统和加热蒸发支路相连；动力电池支路、加热蒸发支路和电驱动冷却系统通过七通阀13相连，切换七通阀13的阀门工作状态，确定目标工作模式；目标工作模式包括第一工作模式、第二工作模式或者第三工作模式；第一工作模式为电驱动冷却系统和加热蒸发支路通过七通阀13连通形成回路，且动力电池支路通过七通阀13形成回路的工作模式；第二工作模式为电驱动冷却系统和动力电池支路通过七通阀13连通形成回路，且加热蒸发支路通过七通阀13形成回路的工作模式；The present invention provides a vehicle thermal management system, as shown in Figure 1, the vehicle thermal management system includes a heat pump air-conditioning system, a battery temperature control system, an electric drive cooling system and a seven-way valve 13; the battery temperature control system includes a power battery branch It is connected with the heating and evaporating branch; the heat pump air-conditioning system is connected with the heating and evaporating branch; the power battery branch, the heating and evaporating branch and the electric drive cooling system are connected through the seven-way valve 13, and the valve working state of the seven-way valve 13 is switched to determine the target work mode; the target working mode includes the first working mode, the second working mode or the third working mode; the first working mode is that the electric drive cooling system and the heating evaporation branch are connected to form a circuit through the seven-way valve 13, and the power battery branch is passed through The working mode in which the seven-way valve 13 forms a circuit; the second working mode is the working mode in which the electric drive cooling system and the power battery branch are connected to form a circuit through the seven-way valve 13, and the heating and evaporation branch forms a circuit through the seven-way valve 13;

第三工作模式为加热蒸发支路和动力电池支路通过七通阀13连通形成回路，且电驱动冷却系统通过七通阀13形成回路的工作模式。The third working mode is a working mode in which the heating evaporation branch and the power battery branch are connected through the seven-way valve 13 to form a circuit, and the electrically driven cooling system forms a circuit through the seven-way valve 13 .

其中，目标工作模式是指车辆热管理系统工作的模式。第一工作模式、第二工作模式和第三工作模式是通过切换七通阀13以使述动力电池支路、加热蒸发支路和电驱动冷却系统中的任意两个系统进行相连，另一个系统形成单独回路的模式，以便车辆热管理系统利用电机总成或者动力电池14产生的余热，优化整车能源管理。Wherein, the target working mode refers to the working mode of the vehicle thermal management system. The first working mode, the second working mode and the third working mode are connected by switching the seven-way valve 13 to connect any two systems in the power battery branch, the heating evaporation branch and the electric drive cooling system, and the other system A separate loop mode is formed so that the vehicle thermal management system can use the waste heat generated by the motor assembly or thepower battery 14 to optimize the energy management of the vehicle.

本实施例的车辆热管理系统通过切换七通阀13的阀门工作状态，即可实现不同工作模式切换，以便多余热量在热泵空调系统、电池温控系统和电驱动冷却系统之间进行灵活转移，从而有效使用多余热量，节约能源，降低能源损耗，且在电池温控系统和电驱动冷却系统没有产生多余热量时，热泵空调系统可以正常工作，利用热泵空调系统为乘员舱提供热风或者冷风，相比传统需要单独的加热器件或者冷却器件，可有效降低能源损耗。The vehicle thermal management system of this embodiment can switch between different working modes by switching the valve working state of the seven-way valve 13, so that excess heat can be flexibly transferred between the heat pump air-conditioning system, the battery temperature control system and the electric drive cooling system. In order to effectively use excess heat, save energy, and reduce energy loss, and when the battery temperature control system and the electric drive cooling system do not generate excess heat, the heat pump air-conditioning system can work normally, and the heat pump air-conditioning system can provide hot air or cold air for the passenger compartment. Compared with the traditional need for separate heating or cooling devices, energy consumption can be effectively reduced.

具体地，第一工作模式，电驱动冷却系统和加热蒸发支路通过七通阀13连通形成回路，电驱动冷却系统中产生的多余热量能够被热泵空调系统利用，且利用加热蒸发支路冷却电驱动冷却系统，从而有效使用多余热量，节约能源，降低能源损耗，保证热泵空调系统节能效果更好，提高热泵空调系统的性能的目的，且利用热泵空调系统可对乘员舱进行加热，相比传统的加热器能耗大幅降低。Specifically, in the first working mode, the electric drive cooling system and the heating evaporation branch are connected to form a circuit through the seven-way valve 13, and the excess heat generated in the electric drive cooling system can be utilized by the heat pump air conditioning system, and the heating evaporation branch is used to cool the electric circuit. Drive the cooling system to effectively use excess heat, save energy, reduce energy loss, ensure better energy-saving effect of the heat pump air-conditioning system, improve the performance of the heat pump air-conditioning system, and use the heat pump air-conditioning system to heat the passenger compartment. The heater energy consumption is greatly reduced.

第二工作模式，电驱动冷却系统和动力电池支路通过七通阀13连通形成回路，电驱动冷却系统中产生的多余热量被用于加热动力电池14，或者动力电池14中产生的多余热量被用于加热电机总成，且热泵空调系统在动力电池14和电驱动冷却系统无法提供热量时，仍利用加热蒸发支路提供热量，保证热泵空调系统正常工作。In the second working mode, the electric drive cooling system and the power battery branch are connected to form a circuit through the seven-way valve 13, and the excess heat generated in the electric drive cooling system is used to heat thepower battery 14, or the excess heat generated in thepower battery 14 is used to heat thepower battery 14. It is used to heat the motor assembly, and when thepower battery 14 and the electric drive cooling system cannot provide heat, the heat pump air-conditioning system still uses the heating evaporation branch to provide heat to ensure the normal operation of the heat pump air-conditioning system.

第三工作模式，加热蒸发支路和动力电池支路通过七通阀13连通形成回路，加热蒸发支路可以为动力电池支路进行温度调节，以加热或者冷却动力电池14，保证车辆热管理系统正常工作，同时热泵空调系统根据实际需求，可以进行加热或者冷却。In the third working mode, the heating and evaporation branch and the power battery branch are connected to form a circuit through the seven-way valve 13, and the heating and evaporation branch can perform temperature adjustment for the power battery branch to heat or cool thepower battery 14 to ensure the vehicle thermal management system Normal work, at the same time, the heat pump air conditioning system can be heated or cooled according to actual needs.

在一实施例中，如图1和2所示，电驱动冷却系统包括隔离散热支路和连通散热支路；第一工作模式包括第一隔离模式101和第一连通模式102；第一隔离模式101为隔离散热支路与加热蒸发支路通过七通阀13连通形成回路的工作模式，且动力电池支路通过七通阀13形成回路的工作模式；第一连通模式102为连通散热支路与加热蒸发支路通过七通阀13连通形成回路，且动力电池支路通过七通阀13形成回路的工作模式；第二工作模式包括第二隔离模式103和第二连通模式104；第二隔离模式103为隔离散热支路与动力电池支路通过七通阀13连通形成回路的工作模式，且加热蒸发支路通过七通阀13形成回路的工作模式；第二连通模式104为连通散热支路与动力电池支路通过七通阀13连通形成回路，且加热蒸发支路通过七通阀13形成回路的工作模式；第三工作模式包括第三隔离模式105和第三连通模式106；第三隔离模式105为加热蒸发支路与动力电池支路通过七通阀13连通形成回路的工作模式，且隔离散热支路通过七通阀13形成回路的工作模式；第三连通模式106为加热蒸发支路与动力电池支路通过七通阀13连通形成回路，且连通散热支路通过七通阀13形成回路的工作模式。In one embodiment, as shown in Figures 1 and 2, the electric drive cooling system includes an isolated heat dissipation branch and a connected heat dissipation branch; the first working mode includes a first isolation mode 101 and a first connection mode 102; the first isolation mode 101 is the working mode in which the isolated heat dissipation branch and the heating evaporation branch are connected to form a circuit through the seven-way valve 13, and the working mode in which the power battery branch is formed in a circuit through the seven-way valve 13; the first connection mode 102 is the communication between the heat dissipation branch and the The heating evaporation branch is connected to form a circuit through the seven-way valve 13, and the power battery branch is connected to the working mode of the circuit through the seven-way valve 13; the second working mode includes the second isolation mode 103 and the second communication mode 104; the second isolation mode 103 is the working mode in which the isolated cooling branch and the power battery branch are connected to form a circuit through the seven-way valve 13, and the working mode in which the heating and evaporation branch is connected to form a circuit through the seven-way valve 13; the second connection mode 104 is the communication between the cooling branch and the The power battery branch is connected to form a circuit through the seven-way valve 13, and the working mode in which the heating and evaporation branch forms a circuit through the seven-way valve 13; the third working mode includes the third isolation mode 105 and the third communication mode 106; the third isolation mode 105 is the working mode in which the heating evaporation branch and the power battery branch are connected to form a circuit through the seven-way valve 13, and the working mode in which the isolated heat dissipation branch is formed in a circuit through the seven-way valve 13; the third connection mode 106 is the heating and evaporation branch and the The power battery branch is connected through the seven-way valve 13 to form a circuit, and the cooling branch is connected to the working mode of the circuit through the seven-way valve 13 .

本实施例中，电驱动冷却系统包括隔离散热支路和连通散热支路，以便根据电驱动冷却系统和电池温控系统中产生热量的多少控制隔离散热支路工作或者连通散热支路工作，实现控制车辆热管理系统在不同支路下工作，达到精准控制多余热量的使用，降低车辆能耗，提升续驶里程。具体地，当电驱动冷却系统需要散热时，则选择连通散热支路进行工作，保证车辆热管理系统正常工作，并精准控制多余热量的使用，降低车辆能耗；当电驱动冷却系统不需要散热时，选择隔离散热支路工作，保证车辆热管理系统正常工作，并精准控制多余热量的使用，降低车辆能耗。In this embodiment, the electric drive cooling system includes an isolated heat dissipation branch and a connected heat dissipation branch, so as to control the work of the isolated heat dissipation branch or the connected heat dissipation branch according to the amount of heat generated in the electric drive cooling system and the battery temperature control system, to realize Control the vehicle thermal management system to work under different branches to achieve precise control of the use of excess heat, reduce vehicle energy consumption, and increase driving mileage. Specifically, when the electric drive cooling system needs to dissipate heat, it chooses to connect to the heat dissipation branch to ensure the normal operation of the vehicle thermal management system, and accurately control the use of excess heat to reduce vehicle energy consumption; when the electric drive cooling system does not need heat dissipation At this time, the isolated heat dissipation branch is selected to ensure the normal operation of the vehicle thermal management system, and the use of excess heat is accurately controlled to reduce vehicle energy consumption.

在一实施例中，如图1和2所示，隔离散热支路包括相互连接的驱动电动水泵17和电机总成；连通散热支路包括相互连接的驱动电动水泵17、电机总成和散热器20；散热器20一端与电机19相连，另一端与七通阀13相连。In one embodiment, as shown in Figures 1 and 2, the isolated heat dissipation branch includes an interconnected driveelectric water pump 17 and a motor assembly; the communicating heat dissipation branch includes an interconnected driveelectric water pump 17, a motor assembly, and aradiator 20; one end of theradiator 20 is connected with themotor 19, and the other end is connected with the seven-way valve 13.

本实施例中，电机总成包括电机19和充电机18。In this embodiment, the motor assembly includes amotor 19 and acharger 18 .

具体地，相互连接的电机总成和驱动电动水泵17形成隔离散热支路适用于电驱动冷却系统不需散热器20散热的情况，即电驱动冷却系统产热量较少的情况；相互连接的电机总成、散热器20和驱动电动水泵17形成连通散热支路，适用于电驱动冷却系统需要散热器20散热，即电驱动冷却系统产热量较多的情况，保证车辆热管理系统正常工作，并精准控制多余热量的使用，降低车辆能耗。Specifically, the interconnected motor assembly and the drivenelectric water pump 17 form an isolated heat dissipation branch circuit, which is applicable to the situation that the electric drive cooling system does not need theradiator 20 to dissipate heat, that is, the situation that the electric drive cooling system produces less heat; the interconnected motors The assembly, theradiator 20 and the drivingelectric water pump 17 form a connected heat dissipation branch, which is suitable for the case where the electric drive cooling system requires theradiator 20 to dissipate heat, that is, the electric drive cooling system produces a lot of heat, so as to ensure the normal operation of the vehicle thermal management system and Precisely control the use of excess heat to reduce vehicle energy consumption.

在一实施例中，如图1和2所示，加热蒸发支路包括相互连接的加热蒸发器11、PTC加热器16和蒸发电动水泵15。In one embodiment, as shown in FIGS. 1 and 2 , the heating and evaporating branch circuit includes aheating evaporator 11 , aPTC heater 16 and an evaporatingelectric water pump 15 connected to each other.

本实施例中，利用加热蒸发器11吸收电驱动冷却系统和/或动力电池支路产生的多余热量，从而有效利用多余热量，降低能耗；且利用PTC加热器16提供热量，加热电驱动冷却系统和/或动力电池支路，可以保护车辆热管理系统中的器件，避免器件受冻结霜等。In this embodiment, theheating evaporator 11 is used to absorb the excess heat generated by the electric drive cooling system and/or the power battery branch, so as to effectively utilize the excess heat and reduce energy consumption; and thePTC heater 16 is used to provide heat to heat the electric drive cooling system. The system and/or power battery branch circuit can protect the components in the vehicle thermal management system and prevent the components from freezing and frosting.

进一步地，当在极低温环境(例如，-20℃温度环境)下，热泵空调性能下降，无法满足乘员舱和动力电池1414的加热需求。本实施例所提供的车辆热管理系统，可以使用加热蒸发支路对电池14进行加热，并利用使用加热蒸发支路为热泵空调系统提供热量，以加热乘员舱，使车辆能够在极限低温环境下仍保持工作，提高车辆管理系统的性能。Further, in an extremely low temperature environment (for example, a temperature environment of -20° C.), the performance of the heat pump air conditioner decreases and cannot meet the heating requirements of the passenger compartment and the power battery 1414 . The vehicle thermal management system provided in this embodiment can use the heating and evaporating branch to heat thebattery 14, and use the heating and evaporating branch to provide heat for the heat pump air-conditioning system to heat the passenger compartment, so that the vehicle can operate in an extreme low temperature environment. Still keep working, improve the performance of the vehicle management system.

在一实施例中，如图1和2所示，热泵空调系统包括压缩机1、冷凝器2、加热蒸发器11、储液罐12和阀门组件；阀门组件包括第二截止阀7和第三电子膨胀阀10；压缩机 1的一端与冷凝器2连接，另一端与储液罐12连接；第二截止阀7的一端与冷凝器2连接，另一端与第三电子膨胀阀10连接；加热蒸发器11的一端与第三电子膨胀阀10连接，另一端与储液罐12连接。In one embodiment, as shown in Figures 1 and 2, the heat pump air conditioning system includes acompressor 1, acondenser 2, aheating evaporator 11, aliquid storage tank 12 and a valve assembly; the valve assembly includes asecond stop valve 7 and a thirdElectronic expansion valve 10; one end of thecompressor 1 is connected to thecondenser 2, and the other end is connected to theliquid storage tank 12; one end of thesecond stop valve 7 is connected to thecondenser 2, and the other end is connected to the thirdelectronic expansion valve 10; heating One end of theevaporator 11 is connected to the thirdelectronic expansion valve 10 , and the other end is connected to theliquid storage tank 12 .

本实施例中，此时，热泵空调系统中冷媒的流动方向具体为：储液罐12中低温低压的冷媒流向压缩机1；经过压缩机1压缩后变为高温高压的气体，高温高压的气体流向冷凝器2；在冷凝器2内部冷凝放热变为中温高压的液体，放出的热量被其周边空气吸收形成热空气，热空气被吹入乘员舱内以加热乘员舱；中温高压的液体经过第二截止阀7和第三电子膨胀阀10，通过第三电子膨胀阀10膨胀减压，形成中温低压的液体，流向加热蒸发器11；中温低压的液体被加热蒸发器11吸收多余热量，形成低温低压的冷媒，流向储液罐12；此时，利用加热蒸发器11吸收电驱动冷却系统或者动力电池支路中产生的多余热量，以保证热泵空调系统进行加热，精准控制多余热量的使用，降低车辆能耗。In this embodiment, at this time, the flow direction of the refrigerant in the heat pump air-conditioning system is specifically: the low-temperature and low-pressure refrigerant in the liquid storage tank 12 flows to the compressor 1; after being compressed by the compressor 1, it becomes a high-temperature and high-pressure gas, and the high-temperature and high-pressure gas Flow to the condenser 2; condense and release heat inside the condenser 2 to become a medium-temperature and high-pressure liquid, and the released heat is absorbed by the surrounding air to form hot air, which is blown into the passenger compartment to heat the passenger compartment; the medium-temperature and high-pressure liquid passes through The second cut-off valve 7 and the third electronic expansion valve 10 are expanded and decompressed by the third electronic expansion valve 10 to form medium-temperature and low-pressure liquid, which flows to the heating evaporator 11; the medium-temperature and low-pressure liquid is absorbed by the heating evaporator 11 to form The low-temperature and low-pressure refrigerant flows to the liquid storage tank 12; at this time, the heating evaporator 11 is used to absorb the excess heat generated in the electric drive cooling system or the power battery branch, so as to ensure the heating of the heat pump air-conditioning system and accurately control the use of excess heat. Reduce vehicle energy consumption.

可以理解地，热泵空调系统进行加热通常是在低温环境下，此时，加热蒸发器11可能会结霜；本实施例的热泵空调系统利用电驱动冷却系统或者动力电池支路产生的多余热量进行加热，利用冷凝器2为乘员舱提供冷风，提高整车能源利用效率，优化整车能源使用；且加热蒸发器11吸收电驱动冷却系统或者动力电池支路产生的多余热量，保证在低温环境下，加热蒸发器11不会结霜，从而利用多余热量保护加热蒸发器11。It can be understood that the heating of the heat pump air-conditioning system is usually in a low-temperature environment. At this time, theheating evaporator 11 may be frosted; Heating, using thecondenser 2 to provide cold air for the passenger compartment, improving the energy utilization efficiency of the vehicle, and optimizing the energy use of the vehicle; and theheating evaporator 11 absorbs the excess heat generated by the electric drive cooling system or the branch circuit of the power battery to ensure , theheating evaporator 11 will not be frosted, thereby using excess heat to protect theheating evaporator 11 .

本实施例中，热泵空调系统的当前工作状态为加热状态，以利用热泵空调系统为乘员舱提供热风，适用第一隔离模式101、第二隔离模式103、第三隔离模式105、第一连通模式102和第三连通模式106中的任一模式，以保证热泵空调系统正常工作，精准控制多余热量的使用，降低车辆能耗。In this embodiment, the current working state of the heat pump air-conditioning system is the heating state, so that the heat pump air-conditioning system can be used to provide hot air for the passenger compartment, and thefirst isolation mode 101, thesecond isolation mode 103, thethird isolation mode 105, and the first connection mode are applicable. 102 and any one of thethird connection modes 106 to ensure the normal operation of the heat pump air-conditioning system, accurately control the use of excess heat, and reduce vehicle energy consumption.

在一实施例中，如图1和2所示，热泵空调系统还包括外部换热器4；阀门组件还包括第一电子膨胀阀3和第一截止阀5；第一电子膨胀阀3的一端与冷凝器2连接，另一端与外部换热器4连接；第一截止阀5的一端与外部换热器4连接，另一端与储液罐12连接。In one embodiment, as shown in Figures 1 and 2, the heat pump air-conditioning system also includes anexternal heat exchanger 4; the valve assembly also includes a firstelectronic expansion valve 3 and afirst stop valve 5; one end of the firstelectronic expansion valve 3 It is connected with thecondenser 2 and the other end is connected with theexternal heat exchanger 4 ; one end of thefirst stop valve 5 is connected with theexternal heat exchanger 4 and the other end is connected with theliquid storage tank 12 .

本实施例中，热泵空调系统中冷媒的流动方向具体为：储液罐12中低温低压的冷媒流向压缩机1；经过压缩机1压缩后变为高温高压的气体，高温高压的气体流向冷凝器2；在冷凝器2内部冷凝放热变为中温高压的液体，放出的热量被其周边空气吸收形成热空气，热空气被吹入乘员舱内以加热乘员舱；中温高压的液体经过预设开度的第一电子膨胀阀3，经过预设开度的第一电子膨胀阀3膨胀减压，形成中温低压的液体，流向入外部换热器4；中温低压的液体经外部换热器4换热，形成低温低压的冷媒，流向储液罐12。In this embodiment, the flow direction of the refrigerant in the heat pump air-conditioning system is specifically: the low-temperature and low-pressure refrigerant in theliquid storage tank 12 flows to thecompressor 1; after being compressed by thecompressor 1, it becomes a high-temperature and high-pressure gas, and the high-temperature and high-pressure gas flows to thecondenser 2. Condensate and release heat inside thecondenser 2 to become a medium-temperature and high-pressure liquid, and the released heat is absorbed by the surrounding air to form hot air, which is blown into the passenger compartment to heat the passenger compartment; the medium-temperature and high-pressure liquid is preset to open The firstelectronic expansion valve 3 with a preset opening degree expands and reduces pressure through the firstelectronic expansion valve 3 with a preset opening degree to form a medium-temperature and low-pressure liquid, which flows into theexternal heat exchanger 4; the medium-temperature and low-pressure liquid is exchanged through theexternal heat exchanger 4 The heat forms a low-temperature and low-pressure refrigerant, which flows to theliquid storage tank 12.

本实施例使用外部换热器4作为蒸发器与外部进行换热，可以保证热泵空调系统进行加热，利用冷凝器2为乘员舱提供热风。其中，预设开度是预先设定的开度，冷媒经过预设开度的第一电子膨胀阀3时，被预设开度的第一电子膨胀阀3膨胀减压。相对的，冷媒经过全开的第一电子膨胀阀3时，全开的第一电子膨胀阀3不对冷媒进行处理。In this embodiment, theexternal heat exchanger 4 is used as the evaporator to exchange heat with the outside, which can ensure the heating of the heat pump air-conditioning system, and thecondenser 2 is used to provide hot air for the passenger compartment. Wherein, the preset opening degree is a preset opening degree, and when the refrigerant passes through the firstelectronic expansion valve 3 with the preset opening degree, it is expanded and decompressed by the firstelectronic expansion valve 3 with the preset opening degree. In contrast, when the refrigerant passes through the fully opened firstelectronic expansion valve 3 , the fully opened firstelectronic expansion valve 3 does not process the refrigerant.

本实施例中，热泵空调系统的当前工作状态为加热状态，以利用热泵空调系统为乘员舱提供热风，适用于第二隔离模式103、第三隔离模式105、第二连通模式104和第三连通模式106中的任一模式，以精准控制多余热量的使用，降低车辆能耗。In this embodiment, the current working state of the heat pump air-conditioning system is the heating state, so that the heat pump air-conditioning system can be used to provide hot air for the passenger compartment, which is applicable to thesecond isolation mode 103, thethird isolation mode 105, thesecond communication mode 104 and the third communication mode. Any one of themodes 106 is used to precisely control the use of excess heat and reduce vehicle energy consumption.

在一实施例中，如图1和2所示，热泵空调系统还包括冷却风扇22，冷却风扇22与散热器20和外部换热器4相对设置。In one embodiment, as shown in FIGS. 1 and 2 , the heat pump air-conditioning system further includes a coolingfan 22 , and the coolingfan 22 is arranged opposite to theradiator 20 and theexternal heat exchanger 4 .

本实施例中，利用冷却风扇22以加快散热器20的散热效果，以及保证外部换热器4与外部环境的换热效果更佳，冷却风扇22与散热器20和外部换热器4相对设置，可以提高冷却风扇22的使用效率，降低成本。In this embodiment, the coolingfan 22 is used to speed up the heat dissipation effect of theradiator 20, and to ensure that the heat exchange effect between theexternal heat exchanger 4 and the external environment is better, and the coolingfan 22 is arranged opposite to theradiator 20 and theexternal heat exchanger 4 , can improve the usage efficiency of the coolingfan 22 and reduce the cost.

在一实施例中，热泵空调系统还包括冷却蒸发器9；阀门组件包括单向阀6和第二电子膨胀阀8；单向阀6的入口端与外部换热器4相连，出口端与第二电子膨胀阀8和第三电子膨胀阀10相连；冷却蒸发器9与第二电子膨胀阀8连接，另一端与储液罐12连接。In one embodiment, the heat pump air conditioning system further includes a cooling evaporator 9; the valve assembly includes acheck valve 6 and a secondelectronic expansion valve 8; the inlet end of thecheck valve 6 is connected to theexternal heat exchanger 4, and the outlet end is connected to the second electronic expansion valve. The secondelectronic expansion valve 8 is connected to the thirdelectronic expansion valve 10 ; the cooling evaporator 9 is connected to the secondelectronic expansion valve 8 , and the other end is connected to theliquid storage tank 12 .

本实施例中，由于单向阀6的出口端与第二电子膨胀阀8和第三电子膨胀阀10相连，则热泵空调系统中冷媒可以通过单向阀6流向第二电子膨胀阀8，或者通过单向阀6流向第三电子膨胀阀10；或者通过单向阀6流向第二电子膨胀阀8和第三电子膨胀阀10；因此冷媒的流动方向可以分为三路，从而实现根据实际需求，控制热泵空调系统的当前工作状态，例如，可以控制热泵空调系统的当前工作状态为不工作和冷却状态，实现灵活控制热泵空调系统。In this embodiment, since the outlet port of the one-way valve 6 is connected to the secondelectronic expansion valve 8 and the thirdelectronic expansion valve 10, the refrigerant in the heat pump air-conditioning system can flow to the secondelectronic expansion valve 8 through the one-way valve 6, or Flow through the one-way valve 6 to the thirdelectronic expansion valve 10; or through the one-way valve 6 to the secondelectronic expansion valve 8 and the thirdelectronic expansion valve 10; therefore, the flow direction of the refrigerant can be divided into three paths, so as to achieve , to control the current working state of the heat pump air conditioning system, for example, the current working state of the heat pump air conditioning system can be controlled as non-working and cooling state, so as to realize flexible control of the heat pump air conditioning system.

作为一示例，热泵空调系统中冷媒的流动方向具体为：储液罐12中低温低压的冷媒流向压缩机1；经过压缩机1压缩后变为高温高压的气体，高温高压的气体流向全开的第一电子膨胀阀3；高温高压的气体经过全开的第一电子膨胀阀3，流向外部换热器4；高温高压的气体经外部换热器4换热，形成中温高压的液体；中温高压的液体经单向阀6进入第三电子膨胀阀10膨胀减压，形成中温低压的液体；中温低压的液体流向加热蒸发器11，形成低温低压的液体，经过加热蒸发器11流向储液罐12，此时，热泵空调系统不工作，实现根据实际情况控制热泵空调系统的当前工作状态，满足用户需求。As an example, the flow direction of the refrigerant in the heat pump air-conditioning system is specifically: the low-temperature and low-pressure refrigerant in the liquid storage tank 12 flows to the compressor 1; after being compressed by the compressor 1, it becomes a high-temperature and high-pressure gas, and the high-temperature and high-pressure gas flows to the fully open The first electronic expansion valve 3; the high-temperature and high-pressure gas flows through the fully-opened first electronic expansion valve 3 to the external heat exchanger 4; the high-temperature and high-pressure gas exchanges heat through the external heat exchanger 4 to form a medium-temperature and high-pressure liquid; medium-temperature and high-pressure The liquid enters the third electronic expansion valve 10 through the check valve 6 for expansion and decompression to form a medium-temperature and low-pressure liquid; the medium-temperature and low-pressure liquid flows to the heating evaporator 11 to form a low-temperature and low-pressure liquid, and flows to the liquid storage tank 12 through the heating evaporator 11 , at this time, the heat pump air-conditioning system does not work, and the current working state of the heat pump air-conditioning system is controlled according to the actual situation to meet user needs.

本实施例中，热泵空调系统的当前工作状态为不工作，适用于第三隔离模式105和第三连通模式106中的其中一种模式，以精准控制多余热量的使用，降低车辆能耗。In this embodiment, the current working state of the heat pump air-conditioning system is non-working, which is suitable for one of thethird isolation mode 105 and thethird connection mode 106, so as to accurately control the use of excess heat and reduce vehicle energy consumption.

作为另一示例，热泵空调系统中冷媒的流动方向具体为：热泵空调系统中冷媒的流动方向为：储液罐12中低温低压的冷媒流向压缩机1；经过压缩机1压缩后变为高温高压的气体，高温高压的气体流向全开的第一电子膨胀阀3；高温高压的气体经过全开的第一电子膨胀阀3，流向外部换热器4；高温高压的气体经外部换热器4换热，形成中温高压的液体；中温高压的液体分为两路，一路经单向阀6进入第三电子膨胀阀10膨胀减压，形成中温低压的液体，中温低压的液体流向加热蒸发器11，形成低温低压的液体，经过加热蒸发器11流向储液罐12；另一路经过第二电子膨胀阀8膨胀减压，形成中温低压的液体，中温低压的液体流向冷却蒸发器9，形成低温低压的液体，经过冷却蒸发器9流向储液罐 12，此时，热泵空调系统的当前工作状态为冷却系统，利用冷却蒸发器9为乘员舱提供冷风。As another example, the flow direction of the refrigerant in the heat pump air-conditioning system is specifically: the flow direction of the refrigerant in the heat pump air-conditioning system is: the low-temperature and low-pressure refrigerant in the liquid storage tank 12 flows to the compressor 1; after being compressed by the compressor 1, it becomes high-temperature and high-pressure The high-temperature and high-pressure gas flows to the first fully-opened electronic expansion valve 3; the high-temperature and high-pressure gas flows through the fully-opened first electronic expansion valve 3 to the external heat exchanger 4; the high-temperature and high-pressure gas flows through the external heat exchanger 4 Heat exchange to form medium-temperature and high-pressure liquid; the medium-temperature and high-pressure liquid is divided into two paths, one path passes through the check valve 6 and enters the third electronic expansion valve 10 for expansion and decompression to form medium-temperature and low-pressure liquid, and the medium-temperature and low-pressure liquid flows to the heating evaporator 11 , forming a low-temperature and low-pressure liquid, which flows to the liquid storage tank 12 through the heating evaporator 11; the other path is expanded and decompressed by the second electronic expansion valve 8 to form a medium-temperature and low-pressure liquid, and the medium-temperature and low-pressure liquid flows to the cooling evaporator 9 to form a low-temperature and low-pressure The liquid flows through the cooling evaporator 9 to the liquid storage tank 12. At this time, the current working state of the heat pump air-conditioning system is the cooling system, and the cooling evaporator 9 is used to provide cold air for the passenger compartment.

本实施例中，热泵空调系统的当前工作状态为冷却状态，适用于第三隔离模式105和第三连通模式106中的其中一种模式，以精准控制多余热量的使用，降低车辆能耗。In this embodiment, the current working state of the heat pump air-conditioning system is the cooling state, which is suitable for one of thethird isolation mode 105 and thethird connection mode 106, so as to accurately control the use of excess heat and reduce vehicle energy consumption.

作为另一示例，热泵空调系统中冷媒的流动方向具体为：储液罐12中低温低压的冷媒流向压缩机1；经过压缩机1压缩后变为高温高压的气体，高温高压的气体流向全开的第一电子膨胀阀3；高温高压的气体经过全开的第一电子膨胀阀3，流向外部换热器4；高温高压的气体经外部换热器4换热，形成中温高压的液体；中温高压的液体经过第二电子膨胀阀8膨胀减压，形成中温低压的液体，中温低压的液体流向冷却蒸发器9，形成低温低压的液体，经过冷却蒸发器9流向储液罐12，此时热泵空调系统的当前工作状态为冷却状态利用冷却蒸发器9为乘员舱提供冷风。As another example, the flow direction of the refrigerant in the heat pump air-conditioning system is specifically: the low-temperature and low-pressure refrigerant in theliquid storage tank 12 flows to thecompressor 1; after being compressed by thecompressor 1, it becomes a high-temperature and high-pressure gas, and the high-temperature and high-pressure gas flows to the fully open the firstelectronic expansion valve 3; the high-temperature and high-pressure gas passes through the fully-opened firstelectronic expansion valve 3, and flows to theexternal heat exchanger 4; the high-temperature and high-pressure gas exchanges heat through theexternal heat exchanger 4 to form a medium-temperature and high-pressure liquid; The high-pressure liquid is expanded and decompressed by the secondelectronic expansion valve 8 to form a medium-temperature and low-pressure liquid. The medium-temperature and low-pressure liquid flows to the cooling evaporator 9 to form a low-temperature and low-pressure liquid, which flows to theliquid storage tank 12 through the cooling evaporator 9. At this time, the heat pump The current working state of the air-conditioning system is the cooling state and utilizes the cooling evaporator 9 to provide cold air for the passenger compartment.

本实施例中，热泵空调系统的当前工作状态为冷却状态，适用于第二连通模式104，以精准控制多余热量的使用，降低车辆能耗。In this embodiment, the current working state of the heat pump air-conditioning system is the cooling state, which is suitable for thesecond connection mode 104, so as to accurately control the use of excess heat and reduce vehicle energy consumption.

本实施例中，当第一电子膨胀阀3全开时，则第一电子膨胀阀3不对冷媒进行处理，此时，外部换热器4作为冷凝器2，与外部环境进行换热，保证热泵空调系统正常工作。可以理解地，外部换热器4可以根据实际情况作为冷凝器2或者蒸发器，因此，外部换热器4具有可复用性，从而减少了本系统的器件，减低成本。In this embodiment, when the firstelectronic expansion valve 3 is fully open, the firstelectronic expansion valve 3 does not process the refrigerant. At this time, theexternal heat exchanger 4 acts as thecondenser 2 to exchange heat with the external environment, ensuring that the heat pump The air conditioning system worked fine. It can be understood that theexternal heat exchanger 4 can be used as thecondenser 2 or the evaporator according to the actual situation. Therefore, theexternal heat exchanger 4 has reusability, thereby reducing the components of the system and reducing the cost.

在一实施例中，热泵空调系统还包括鼓风机21，鼓风机21与冷凝器2和冷却蒸发器9相对设置，且位于乘员舱的进风口。In one embodiment, the heat pump air-conditioning system further includes ablower 21, which is arranged opposite to thecondenser 2 and the cooling evaporator 9, and is located at the air inlet of the passenger compartment.

本实施例中，利用鼓风机21将热空气吹入乘员舱内，以保证为乘员舱提供热空气的效果更佳。In this embodiment, theair blower 21 is used to blow hot air into the passenger compartment to ensure a better effect of providing hot air to the passenger compartment.

本发明所提供的车辆热管理系统通过使用七通阀13，可以减少车辆热管理系统的器件数量，不需要其他阀门配合，即可实现热量在热泵空调系统、电池温控系统和电驱动冷却系统之间进行灵活转移，可以有效降低车辆热管理系统成本，同时使得车辆热管理系统结构简便，便于控制；并可以根据实际情况，灵活控制热泵空调系统的当前工作状态，提高车辆性能，且热泵空调系统中外部换热器4可以根据实际需要作为冷凝器2或者蒸发器，从而减少了本系统的器件，减低成本。The vehicle thermal management system provided by the present invention can reduce the number of components of the vehicle thermal management system by using the seven-way valve 13, and can realize heat transfer in the heat pump air-conditioning system, battery temperature control system and electric drive cooling system without the cooperation of other valves. The flexible transfer between the vehicle thermal management system can effectively reduce the cost of the vehicle thermal management system, and at the same time make the vehicle thermal management system simple and easy to control; and can flexibly control the current working state of the heat pump air conditioning system according to the actual situation, improve vehicle performance, and the heat pump air conditioner Theexternal heat exchanger 4 in the system can be used as thecondenser 2 or the evaporator according to actual needs, thereby reducing the components of the system and reducing the cost.

本发明提供一种车辆热管理方法，如图3所示，应用如上实施例的车辆热管理系统中，包括：The present invention provides a vehicle thermal management method, as shown in Figure 3, applied to the vehicle thermal management system of the above embodiment, including:

S301：采集车辆当前数据。S301: Collect current vehicle data.

其中，车辆当前数据是指车辆当前时刻所对应的数据，具体包括环境实际温度、电池实际温度和驱动发热量，或者，环境实际温度、电池实际温度、驱动发热量和散热器20等。Wherein, the current data of the vehicle refers to the data corresponding to the current moment of the vehicle, specifically including the actual temperature of the environment, the actual temperature of the battery, and the heat generated by driving, or the actual temperature of the environment, the actual temperature of the battery, the heat generated by the drive, and theradiator 20 .

其中，环境实际温度是指车辆所处环境的温度。本发明中，预先设定第一环境温度和第二环境温度，在此不做限定，其中，第一环境温度小于第二环境温度。示例性地，该第一环境温度可以为15°，第二环境温度可以为30°。当环境实际温度小于第一环境温度，此时为低温环境，需要保护加热蒸发器11，避免加热蒸发器11结霜；且可以控制热泵空调系统的当前工作状态为加热状态，以为乘员舱提供热风，此时，加热蒸发器11可以通过吸收电驱动冷却系统和/或电池温控系统产生的热量，使热泵空调系统的冷媒吸热气化，实现利用多余的热量，有效提高热泵空调系统的性能；当环境实际温度在第一环境温度和第二环境温度之间，此时为常温状态，可以根据实际情况控制热泵空调系统的当前工作状态为加热状态或者冷却状态，实现灵活控制热泵空调系统；当环境实际温度大于第二环境温度，此时为高温状态，控制热泵空调系统的当前工作状态为不工作或者冷却状态。Wherein, the actual temperature of the environment refers to the temperature of the environment where the vehicle is located. In the present invention, the first ambient temperature and the second ambient temperature are preset, which are not limited herein, wherein the first ambient temperature is lower than the second ambient temperature. Exemplarily, the first ambient temperature may be 15°, and the second ambient temperature may be 30°. When the actual temperature of the environment is lower than the first ambient temperature, it is a low-temperature environment, and the heating evaporator 11 needs to be protected to avoid frosting of the heating evaporator 11; and the current working state of the heat pump air-conditioning system can be controlled as a heating state to provide hot air for the passenger compartment , at this time, the heating evaporator 11 can absorb the heat generated by the electric drive cooling system and/or the battery temperature control system, so that the refrigerant in the heat pump air conditioning system absorbs heat and vaporizes, so as to realize the use of excess heat and effectively improve the performance of the heat pump air conditioning system ; When the actual temperature of the environment is between the first ambient temperature and the second ambient temperature, it is in the normal temperature state at this time, and the current working state of the heat pump air-conditioning system can be controlled according to the actual situation as a heating state or a cooling state, so as to realize flexible control of the heat pump air-conditioning system; When the actual ambient temperature is greater than the second ambient temperature, it is in a high temperature state, and the current working state of the heat pump air-conditioning system is controlled as a non-working or cooling state.

电池实际温度是动力电池14工作所产生的温度。本发明中，预先设定第一电池温度、第二电池温度和第三电池发热量，且第一电池温度小于第二电池温度，第二电池温度小于第三电池发热量。当电池实际温度小于第一电池温度，此时，动力电池14需要加热；当电池实际温度在第一电池温度和第二电池温度之间，则动力电池14不需要加热也不需要冷却；当电池实际温度在第二电池温度和第三电池发热量之间，则动力电池14发热量较小，需要冷却；当电池实际温度大于第三电池发热量，则动力电池14发热量较大，需要冷却。The actual temperature of the battery is the temperature generated by the operation of thepower battery 14 . In the present invention, the first battery temperature, the second battery temperature and the third battery heating value are preset, and the first battery temperature is lower than the second battery temperature, and the second battery temperature is lower than the third battery heating value. When the actual temperature of the battery is less than the first battery temperature, thepower battery 14 needs to be heated; when the actual temperature of the battery is between the first battery temperature and the second battery temperature, thepower battery 14 does not need to be heated or cooled; If the actual temperature is between the temperature of the second battery and the calorific value of the third battery, then thepower battery 14 will generate less heat and needs to be cooled; .

驱动发热量是电机总成(即充电机18和驱动总成)工作所产生的温度。本发明中，预先设定第一发热量和第二发热量，且第一发热量小于第二发热量。当驱动发热量小于第一发热量，则不需要进行冷却；当驱动发热量在第一发热量和第二发热量之间，则电机总成产生热量较少，需要冷却或者电驱动冷却系统进行内循环保温；当驱动发热量大于第二发热量，则电机总成产生热量较多，需要进行冷却。The heat generated by the drive is the temperature generated by the motor assembly (ie, thecharger 18 and the drive assembly) during operation. In the present invention, the first calorific value and the second calorific value are preset, and the first calorific value is smaller than the second calorific value. When the driving calorific value is less than the first calorific value, no cooling is required; when the driving calorific value is between the first calorific value and the second calorific value, the motor assembly generates less heat, which requires cooling or electric drive cooling system Inner circulation heat preservation; when the driving calorific value is greater than the second calorific value, the motor assembly generates more heat and needs to be cooled.

S302：根据车辆当前数据，切换七通阀的阀门工作状态，确定目标工作模式。S302: According to the current data of the vehicle, switch the valve working state of the seven-way valve to determine the target working mode.

本实施例中，根据车辆当前数据，切换七通阀13的阀门工作状态，以灵活地利用电驱动冷却系统和电池温控系统产生的多余热量，提高了整车的能量利用效率，降低车辆电耗，提高续航里程。In this embodiment, according to the current data of the vehicle, the valve working state of the seven-way valve 13 is switched to flexibly utilize the excess heat generated by the electric drive cooling system and the battery temperature control system, thereby improving the energy utilization efficiency of the vehicle and reducing the power consumption of the vehicle. Consumption, improve cruising range.

S303：根据目标工作模式，控制与目标工作模式相对应的目标执行器件工作。S303: According to the target working mode, control the target execution device corresponding to the target working mode to work.

其中，目标执行器件是组成车辆热管理系统的器件，包括但不限于阀门组件、冷凝器 2和加热蒸发器11等。Wherein, the target execution device is a device constituting the thermal management system of the vehicle, including but not limited to the valve assembly, thecondenser 2 and theheating evaporator 11, etc.

本实施例所提供的车辆热管理方法中，根据车辆当前数据，切换七通阀13的阀门工作状态，确定目标工作模式，根据目标工作模式，控制与目标工作模式相对应的目标执行器件工作，因此，车辆热管理系统可以在多种工作模式下工作，以实现热量在热泵空调系统、电池温控系统和电驱动冷却系统之间进行灵活转移，可以有效降低车辆热管理系统成本，同时使得车辆热管理系统结构简便，便于控制。In the vehicle thermal management method provided in this embodiment, according to the current data of the vehicle, the valve working state of the seven-way valve 13 is switched, the target working mode is determined, and the target actuator corresponding to the target working mode is controlled to work according to the target working mode. Therefore, the vehicle thermal management system can work in a variety of working modes to realize the flexible transfer of heat between the heat pump air conditioning system, battery temperature control system and electric drive cooling system, which can effectively reduce the cost of the vehicle thermal management system, and at the same time make the vehicle The thermal management system is simple in structure and easy to control.

作为一示例，如图4所示，步骤S302和S303，即根据车辆当前数据，切换七通阀的阀门工作状态，确定目标工作模式。根据目标工作模式，控制与目标工作模式相对应的目标执行器件工作，包括：As an example, as shown in FIG. 4 , steps S302 and S303 are to switch the valve working state of the seven-way valve according to the current data of the vehicle to determine the target working mode. According to the target working mode, control the work of the target execution device corresponding to the target working mode, including:

S401：车辆当前数据包括环境实际温度、动力电池支路对应的电池实际温度和电机总成对应的驱动发热量。S401: The current data of the vehicle includes the actual temperature of the environment, the actual temperature of the battery corresponding to the power battery branch, and the driving calorific value corresponding to the motor assembly.

S402：若环境实际温度小于第一环境温度、电池实际温度在第一电池温度和第二电池温度之间、且驱动发热量不小于第一发热量，则切换七通阀的阀门工作状态，将第一工作模式确定为目标工作模式。S402: If the actual temperature of the environment is lower than the first ambient temperature, the actual temperature of the battery is between the first battery temperature and the second battery temperature, and the driving calorific value is not less than the first calorific value, switch the valve working state of the seven-way valve to The first working mode is determined as the target working mode.

S403：根据第一工作模式，控制热泵空调系统中的冷凝器进行加热、控制电驱动冷却系统中的散热器切换工作状态、且控制加热蒸发支路中的加热蒸发器切换工作状态。S403: According to the first working mode, control the condenser in the heat pump air conditioning system to heat, control the radiator in the electric drive cooling system to switch working states, and control the heating evaporator in the heating evaporation branch to switch working states.

本实施例中，环境实际温度小于第一环境温度，则此时为低温环境，加热蒸发器11可能结霜，需要利用热泵空调系统为乘员舱提供暖风，且利用动力电池14或者电机19产生的热量供应给加热蒸发器11，避免加热蒸发器11结霜；电池实际温度在第一电池温度和第二电池温度之间，则动力电池14不需要加热或者冷却；电机19工作产生的驱动发热量大于第二驱动热量，则电机19需要冷却，且电机19产生的热量足够供加热蒸发器11 工作；此时，将第一工作模式确定为目标工作模式，即电驱动冷却系统与加热蒸发支路形成回路，动力电池支路形成单独回路。In this embodiment, if the actual temperature of the environment is lower than the first ambient temperature, then it is a low-temperature environment at this time, and theheating evaporator 11 may be frosted. It is necessary to use a heat pump air-conditioning system to provide warm air for the passenger compartment, and use thepower battery 14 or themotor 19 to generate warm air. The heat supplied to theheating evaporator 11 prevents theheating evaporator 11 from frosting; the actual temperature of the battery is between the first battery temperature and the second battery temperature, then thepower battery 14 does not need to be heated or cooled; the driving generator generated by the operation of themotor 19 If the heat is greater than the second driving heat, then themotor 19 needs to be cooled, and the heat generated by themotor 19 is enough to work for theheating evaporator 11; The circuit forms a circuit, and the branch circuit of the power battery forms a separate circuit.

具体地，车辆热管理系统的目标执行器件工作过程为：控制第二截止阀7和第三电子膨胀阀10打开，控制压缩机1、冷凝器2、加热蒸发器11、储液罐12、驱动电动水泵17 和鼓风机21工作，因此，驱动电动水泵17驱动冷却液流经电机19，以冷却电机19，加热后的冷却液流经加热蒸发器11，可以保护加热蒸发器11，避免加热蒸发器11结霜；且加热蒸发器11吸收多余热量，使加热后的冷却液降温，又保证热泵空调系统正常工作，有效提高多余热量的利用效率，节约能源，可以提高热泵空调系统的性能，提高了整车的能量利用效率，从而增加了电动车辆的续航行驶里程。Specifically, the target actuator working process of the vehicle thermal management system is: control the opening of the second cut-offvalve 7 and the thirdelectronic expansion valve 10, control thecompressor 1, thecondenser 2, theheating evaporator 11, theliquid storage tank 12, the driveElectric water pump 17 andair blower 21 work, therefore, driveelectric water pump 17 and drive coolant to flow throughmotor 19, to coolmotor 19, the coolant after heating flows throughheating evaporator 11, can protectheating evaporator 11, avoidsheating evaporator 11 is frosted; and theheating evaporator 11 absorbs excess heat to cool down the heated coolant and ensure the normal operation of the heat pump air-conditioning system, effectively improving the utilization efficiency of excess heat, saving energy, and improving the performance of the heat pump air-conditioning system. The energy utilization efficiency of the whole vehicle is improved, thereby increasing the cruising range of the electric vehicle.

本实施例所提供的车辆热管理方法，当环境实际温度小于第一环境温度、电池实际温度在第一电池温度和第二电池温度之间、且驱动发热量不小于第一发热量，则切换七通阀 13的阀门工作状态，将第一工作模式确定为目标工作模式。根据第一工作模式，控制热泵空调系统中的冷凝器2进行加热、控制电驱动冷却系统中的驱动电动水泵17切换工作状态、控制加热蒸发支路中的加热蒸发器11切换工作状态，提高了整车的能量利用效率，可以提高热泵空调系统的性能，增加了电动车辆的续航行驶里程。In the vehicle thermal management method provided in this embodiment, when the actual temperature of the environment is lower than the first ambient temperature, the actual temperature of the battery is between the first battery temperature and the second battery temperature, and the driving calorific value is not less than the first calorific value, switch The valve working state of the seven-way valve 13 determines the first working mode as the target working mode. According to the first working mode, thecondenser 2 in the heat pump air-conditioning system is controlled to heat, the drivingelectric water pump 17 in the electric drive cooling system is controlled to switch the working state, and theheating evaporator 11 in the heating evaporation branch is controlled to switch the working state, which improves the efficiency The energy utilization efficiency of the whole vehicle can improve the performance of the heat pump air-conditioning system and increase the cruising range of the electric vehicle.

作为一示例，步骤S302，即若环境实际温度小于第一环境温度、电池实际温度在第一电池温度和第二电池温度之间、且驱动发热量不小于第一发热量，则切换七通阀的阀门工作状态，将第一工作模式确定为目标工作模式，包括：As an example, in step S302, if the actual temperature of the environment is lower than the first ambient temperature, the actual temperature of the battery is between the first battery temperature and the second battery temperature, and the driving calorific value is not less than the first calorific value, switch the seven-way valve The working state of the valve, the first working mode is determined as the target working mode, including:

若环境实际温度小于第一环境温度、电池实际温度在第一电池温度和第二电池温度之间、且驱动发热量大于第二发热量，则切换七通阀13的阀门工作状态，将第一隔离模式101确定为目标工作模式。If the actual temperature of the environment is less than the first ambient temperature, the actual temperature of the battery is between the first battery temperature and the second battery temperature, and the driving calorific value is greater than the second calorific value, then switch the valve working state of the seven-way valve 13, and the first Theisolation mode 101 is determined as the target working mode.

本实施例，驱动发热量大于第二发热量，此时，驱动发热量足以加热第二蒸发器11，因此，不控制散热器20工作，将第一隔离模式101确定为目标工作模式。In this embodiment, the driving calorific value is greater than the second calorific value. At this time, the driving calorific value is sufficient to heat thesecond evaporator 11 . Therefore, theradiator 20 is not controlled to work, and thefirst isolation mode 101 is determined as the target operating mode.

若环境实际温度小于第一环境温度、电池实际温度在第一电池温度和第二电池温度之间、且驱动发热量在第一发热量和第二发热量之间，则切换七通阀13的阀门工作状态，将第一连通模式102确定为目标工作模式。If the actual temperature of the environment is less than the first ambient temperature, the actual temperature of the battery is between the first battery temperature and the second battery temperature, and the driving heat value is between the first heat value and the second heat value, then switch the seven-way valve 13 In the working state of the valve, thefirst communication mode 102 is determined as the target working mode.

本实施例，驱动发热量在第一发热量和第二发热量之间，则不足以加热第二蒸发器11，本实施例，控制散热器20工作，将第一隔离模式101确定为目标工作模式，以采用散热器20和电机总成为第二蒸发器11提供热量，保证热泵空调系统可以正常工作，实现精准利用多余的热量，提高能源使用效率。In this embodiment, if the driving calorific value is between the first calorific value and the second calorific value, it is not enough to heat thesecond evaporator 11. In this embodiment, theradiator 20 is controlled to work, and thefirst isolation mode 101 is determined as the target operation In this mode, theradiator 20 and the motor assembly are used to provide heat for thesecond evaporator 11, so as to ensure that the heat pump air-conditioning system can work normally, realize accurate use of excess heat, and improve energy use efficiency.

本实施例所提供的车辆热管理方法，根据电机总成产生的驱动发热量控制散热器20 工作或者不工作，以保证热泵空调系统可以正常工作，实现精准利用多余的热量，提高能源使用效率。The vehicle thermal management method provided in this embodiment controls theradiator 20 to work or not to work according to the driving heat generated by the motor assembly, so as to ensure that the heat pump air-conditioning system can work normally, realize accurate use of excess heat, and improve energy use efficiency.

作为一示例，如图5所示，步骤S302和S303，即根据车辆当前数据，切换七通阀的阀门工作状态，确定目标工作模式；根据目标工作模式，控制与目标工作模式相对应的目标执行器件工作，包括：As an example, as shown in Figure 5, steps S302 and S303, that is, according to the current data of the vehicle, switch the valve working state of the seven-way valve to determine the target working mode; according to the target working mode, control the target execution corresponding to the target working mode device operation, including:

S501：车辆当前数据包括环境实际温度、动力电池支路对应的电池实际温度、电机总成对应的驱动发热量和散热器需求。S501: The current data of the vehicle includes the actual temperature of the environment, the actual temperature of the battery corresponding to the power battery branch, the driving calorific value corresponding to the motor assembly, and the radiator demand.

S502：若环境实际温度小于第一环境温度、电池实际温度小于第一电池温度、驱动发热量大于第二发热量、且所述散热器需求为无需工作，则切换七通阀的阀门工作状态，将第二工作模式确定为目标工作模式；或者，若环境实际温度小于第一环境温度、电池实际温度在第一电池温度和第二电池温度之间、驱动发热量小于第一发热量、且所述散热器需求为无需工作，则切换七通阀的阀门工作状态，将第二工作模式确定为目标工作模式；或者，若环境实际温度在第一环境温度和第二环境温度之间、电池实际温度在第二电池温度和第三电池温度之间、驱动发热量在第一发热量和第二发热量之间、且所述散热器需求为需工作，则切换七通阀的阀门工作状态，将第二工作模式确定为目标工作模式。S502: If the actual temperature of the environment is lower than the first ambient temperature, the actual temperature of the battery is lower than the first battery temperature, the driving calorific value is greater than the second calorific value, and the radiator requires no work, switch the valve working state of the seven-way valve, Determining the second working mode as the target working mode; or, if the actual temperature of the environment is lower than the first ambient temperature, the actual temperature of the battery is between the first battery temperature and the second battery temperature, the driving heat generation is less than the first heat generation, and the If the radiator requires no work, switch the valve working state of the seven-way valve, and determine the second working mode as the target working mode; or, if the actual temperature of the environment is between the first and second ambient temperatures, the actual temperature of the battery When the temperature is between the second battery temperature and the third battery temperature, the driving calorific value is between the first calorific value and the second calorific value, and the radiator needs to work, then switch the valve working state of the seven-way valve, The second working mode is determined as the target working mode.

本实施例中，第二工作模式，电驱动冷却系统和动力电池支路通过七通阀13连通形成回路，且加热蒸发支路通过七通阀13形成回路的工作模式；因此，适用于动力电池14需要加热，而电驱动冷却系统需要冷却的情况；或者适用于动力电池14和电驱动冷却系统不需要加热和不需要冷却的情况；或者适用于动力电池14不需要加热和不需要冷却，而电驱动冷却系统有少量热量产生，可以通过散热器20散热的情况。以达到冷却电池温控系统和电驱动冷却系统正常工作，而热泵空调系统在冷却电池温控系统和电驱动冷却系统无法提供热量时，可以利用PTC提供热量，保证热泵空调系统正常工作，从而实现多余热量在动力电池14和电驱动冷却系统之间转移，节约能源，降低能源损耗，提高正常热量使用效率。In this embodiment, in the second working mode, the electric drive cooling system and the branch circuit of the power battery are connected to form a circuit through the seven-way valve 13, and the working mode in which the heating and evaporation branch forms a circuit through the seven-way valve 13; therefore, it is suitable for thepower battery 14 needs to be heated, and the electric drive cooling system needs to cool down; or be applicable to the situation thatpower battery 14 and electric drive cooling system do not need heating and do not need cooling; The electric drive cooling system generates a small amount of heat, which can be dissipated through theradiator 20 . In order to achieve the normal operation of the cooling battery temperature control system and the electric drive cooling system, and the heat pump air conditioning system can use PTC to provide heat when the cooling battery temperature control system and the electric drive cooling system cannot provide heat to ensure the normal operation of the heat pump air conditioning system, thereby realizing Excess heat is transferred between thepower battery 14 and the electric drive cooling system to save energy, reduce energy loss, and improve normal heat utilization efficiency.

S503：根据第二工作模式，控制热泵空调系统中的冷凝器进行加热或者冷却蒸发器进行冷却、控制电驱动冷却系统中的散热器切换工作状态、控制加热蒸发支路中的加热蒸发器切换工作状态。S503: According to the second working mode, control the condenser in the heat pump air-conditioning system to heat or cool the evaporator to cool, control the radiator in the electric drive cooling system to switch the working state, and control the heating and evaporator switching work in the heating and evaporating branch circuit state.

第二工作模式，控制热泵空调系统中的冷凝器2，以为乘员舱提供热风，或者控制冷却蒸发器9进行冷却，以为乘员舱提供冷风；可以理解地，当动力电池14和电驱动冷却系统不需要加热和不需要冷却时，则驱动电动水泵17不工作。In the second working mode, thecondenser 2 in the heat pump air-conditioning system is controlled to provide hot air for the passenger compartment, or the cooling evaporator 9 is controlled for cooling to provide cold air for the passenger compartment; understandably, when thepower battery 14 and the electric drive cooling system are not When needing heating and not needing cooling, then driveelectric water pump 17 and do not work.

本实施例中所提供的车辆热管理方法，若环境实际温度小于第一环境温度、电池实际温度小于第一电池温度、驱动发热量大于第二发热量、且散热器20不工作，则切换七通阀13的阀门工作状态，将第二工作模式确定为目标工作模式；或者，若环境实际温度小于第一环境温度、电池实际温度在第一电池温度和第二电池温度之间、驱动发热量小于第一发热量、且散热器20不工作，则切换七通阀13的阀门工作状态，将第二工作模式确定为目标工作模式；或者，若环境实际温度在第一环境温度和第二环境温度之间、电池实际温度在第二电池温度和第三电池温度之间、驱动发热量在第一发热量和第二发热量之间、且散热器20工作，则切换七通阀13的阀门工作状态，将第二工作模式确定为目标工作模式。根据第二工作模式，控制热泵空调系统中的冷凝器2进行加热或者冷却蒸发器9进行冷却、控制电驱动冷却系统中的驱动电动水泵17切换工作状态、控制加热蒸发支路中的加热蒸发器11切换工作状态，达到冷却电池温控系统和电驱动冷却系统正常工作，而热泵空调系统在冷却电池温控系统和电驱动冷却系统无法提供热量时，可以利用PTC提供热量，保证热泵空调系统正常工作，从而实现多余热量在动力电池14和电驱动冷却系统之间转移，节约能源，降低能源损耗，提高正常热量使用效率。In the vehicle thermal management method provided in this embodiment, if the actual temperature of the environment is lower than the first ambient temperature, the actual temperature of the battery is lower than the first battery temperature, the driving calorific value is greater than the second calorific value, and the radiator 20 is not working, switch to seven Through the valve working state of the valve 13, the second working mode is determined as the target working mode; or, if the actual temperature of the environment is less than the first ambient temperature, the actual temperature of the battery is between the first battery temperature and the second battery temperature, and the driving calorific value is Less than the first calorific value and the radiator 20 does not work, then switch the valve operating state of the seven-way valve 13, and determine the second operating mode as the target operating mode; or, if the actual temperature of the environment is between the first ambient temperature and the second ambient temperature temperature, the actual temperature of the battery is between the second battery temperature and the third battery temperature, the driving calorific value is between the first calorific value and the second calorific value, and the radiator 20 is working, then switch the valve of the seven-way valve 13 The working state is to determine the second working mode as the target working mode. According to the second working mode, control thecondenser 2 in the heat pump air-conditioning system to heat or cool the evaporator 9 to cool, control the drivingelectric water pump 17 in the electric drive cooling system to switch the working state, and control the heating evaporator in theheating evaporation branch 11 Switch the working state to achieve the normal operation of the cooling battery temperature control system and the electric drive cooling system, and the heat pump air conditioning system can use PTC to provide heat when the cooling battery temperature control system and the electric drive cooling system cannot provide heat to ensure the normal operation of the heat pump air conditioning system work, thereby realizing the transfer of excess heat between thepower battery 14 and the electric drive cooling system, saving energy, reducing energy loss, and improving normal heat utilization efficiency.

作为一实施例，步骤S502，包括如下示例：As an embodiment, step S502 includes the following example:

作为一示例，若环境实际温度小于第一环境温度、电池实际温度小于第一电池温度、驱动发热量大于第二发热量、且所述散热器需求为无需工作，或者，若环境实际温度小于第一环境温度、电池实际温度在第一电池温度和第二电池温度之间、驱动发热量小于第一发热量、且所述散热器需求为无需工作，则切换七通阀的阀门工作状态，将第二隔离模式确定为目标工作模式。As an example, if the actual temperature of the environment is lower than the first ambient temperature, the actual temperature of the battery is lower than the first battery temperature, the driving calorific value is greater than the second calorific value, and the radiator requires no work, or if the actual ambient temperature is lower than the first If the ambient temperature, the actual temperature of the battery is between the first battery temperature and the second battery temperature, the driving calorific value is less than the first calorific value, and the radiator requires no work, switch the valve working state of the seven-way valve to The second isolation mode is determined as the target working mode.

本实施例，第二隔离模式103适用于动力电池14需要加热，而电驱动冷却系统需要冷却的情况；或者适用于动力电池14和电驱动冷却系统不需要加热和不需要冷却的情况。In this embodiment, thesecond isolation mode 103 is suitable for the situation that thepower battery 14 needs to be heated, but the electric drive cooling system needs to be cooled; or it is suitable for the situation that thepower battery 14 and the electric drive cooling system do not need to be heated or cooled.

作为另一示例，若环境实际温度在第一环境温度和第二环境温度之间、电池实际温度在第二电池温度和第三电池温度之间、驱动发热量在第一发热量和第二发热量之间、且所述散热器需求为需工作，则切换七通阀的阀门工作状态，将第二连通模式确定为目标工作模式。As another example, if the actual temperature of the environment is between the first ambient temperature and the second ambient temperature, the actual temperature of the battery is between the second battery temperature and the third battery temperature, and the driving heat generation is between the first heat generation and the second heat generation. If the heat is between and the radiator needs to work, the valve working state of the seven-way valve is switched, and the second connection mode is determined as the target working mode.

本实施例中，第二连通模式104适用于动力电池14不需要加热和不需要冷却，而电驱动冷却系统有少量热量产生，可以通过散热器20散热的情况。In this embodiment, thesecond communication mode 104 is applicable to the situation that thepower battery 14 does not need to be heated or cooled, and the electric drive cooling system generates a small amount of heat, which can be dissipated through theradiator 20 .

本实施例中所提供的车辆热管理方法，根据不同的当前车辆数据进入第二隔离模式 103或者第二连通模式104，以精准控制多余热量的使用，降低车辆能耗。The vehicle thermal management method provided in this embodiment enters thesecond isolation mode 103 or thesecond connection mode 104 according to different current vehicle data, so as to accurately control the use of excess heat and reduce vehicle energy consumption.

作为一示例，如图6所示，步骤S302和S303，即根据车辆当前数据，切换七通阀的阀门工作状态，确定目标工作模式；根据目标工作模式，控制与目标工作模式相对应的目标执行器件工作，包括：As an example, as shown in Figure 6, steps S302 and S303, that is, according to the current data of the vehicle, switch the valve working state of the seven-way valve to determine the target working mode; according to the target working mode, control the target execution corresponding to the target working mode device operation, including:

S601：车辆当前数据包括环境实际温度、动力电池支路对应的电池实际温度、电机总成对应的驱动发热量和散热器需求；S601: The current data of the vehicle includes the actual temperature of the environment, the actual temperature of the battery corresponding to the power battery branch, the driving calorific value corresponding to the motor assembly, and the radiator demand;

S602：若环境实际温度小于第一环境温度、电池实际温度小于第一电池温度、驱动发热量在第一发热量和第二发热量之间、且所述散热器需求为无需工作，则切换七通阀的阀门工作状态，将第三工作模式确定为目标工作模式；或者，若环境实际温度小于第一环境温度、电池实际温度小于第一电池温度、驱动发热量大于第二发热量、且所述散热器需求为需工作，则切换七通阀的阀门工作状态，将第三工作模式确定为目标工作模式；或者，若环境实际温度小于第一环境温度、电池实际温度大于第三电池温度、且驱动发热量不小于第三发热量、且所述散热器需求为需工作或者不工作，则切换七通阀的阀门工作状态，将第三工作模式确定为目标工作模式；或者，若环境实际温度大于第二环境温度、电池实际温度大于第三电池温度、驱动发热量不小于第一发热量、且所述散热器需求为需工作或者不工作，则切换七通阀的阀门工作状态，将第三工作模式确定为目标工作模式。S602: If the actual temperature of the environment is lower than the first ambient temperature, the actual temperature of the battery is lower than the first battery temperature, the driving calorific value is between the first calorific value and the second calorific value, and the radiator requires no work, switch to seven Determine the third working mode as the target working mode; or, if the actual temperature of the environment is lower than the first ambient temperature, the actual temperature of the battery is lower than the first battery temperature, the driving calorific value is greater than the second calorific value, and the If the above radiator needs to work, switch the valve working state of the seven-way valve, and determine the third working mode as the target working mode; or, if the actual temperature of the environment is lower than the first ambient temperature, the actual temperature of the battery is greater than the third battery temperature, And the driving calorific value is not less than the third calorific value, and the radiator needs to work or not work, then switch the valve working state of the seven-way valve, and determine the third working mode as the target working mode; or, if the environment is actual If the temperature is greater than the second ambient temperature, the actual temperature of the battery is greater than the third battery temperature, the driving heat output is not less than the first heat output, and the radiator needs to work or not work, then switch the valve working state of the seven-way valve to The third working mode is determined as the target working mode.

本实施例中，第三工作模式下，加热蒸发支路和动力电池支路通过七通阀13连通形成回路，则适用于电力电池需要冷却或者加热的情况；当电力电池需要冷却时，则利用加热蒸发支路的PTC加热器16为电力电池提供热量；电力电池产生多余的热量时，则利用多余的热量为热泵空调系统提供热量，提高整车的能量利用效率，增加电动车辆的续航行驶里程。且电驱动冷却系统通过七通阀13形成回路的工作模式，则电驱动冷却系统不需要冷却或者加热，或者可以利用散热器20进行散热。本实施例，加热蒸发支路可以为动力电池支路进行温度调节，以保证车辆热管理系统正常工作，同时热泵空调系统根据实际需求，利用动力电池14产生的多余热量进行加热或者冷却，以提高整车的能量利用效率，增加电动车辆的续航行驶里程。In this embodiment, in the third working mode, the heating evaporation branch and the power battery branch are connected to form a circuit through the seven-way valve 13, which is suitable for the situation where the power battery needs to be cooled or heated; when the power battery needs to be cooled, use ThePTC heater 16 in the heating evaporation branch provides heat for the electric battery; when the electric battery generates excess heat, the excess heat is used to provide heat for the heat pump air-conditioning system, improving the energy utilization efficiency of the vehicle and increasing the cruising range of the electric vehicle . And the electric drive cooling system forms a working mode of a circuit through the seven-way valve 13, then the electric drive cooling system does not need to be cooled or heated, or theradiator 20 can be used for heat dissipation. In this embodiment, the temperature of the heating and evaporating branch can be adjusted for the power battery branch to ensure the normal operation of the vehicle thermal management system. The energy utilization efficiency of the whole vehicle increases the cruising range of the electric vehicle.

S603：根据第三工作模式，控制热泵空调系统中的冷凝器进行加热、或者冷却蒸发器进行冷却、或者冷凝器和冷却蒸发器不工作；控制电驱动冷却系统中的散热器切换工作状态；控制加热蒸发支路中的加热蒸发器切换工作状态。S603: According to the third working mode, control the condenser in the heat pump air-conditioning system to heat, or the cooling evaporator to cool, or the condenser and the cooling evaporator to not work; control the radiator in the electric drive cooling system to switch the working state; control The heating evaporator in the heating evaporating branch switches the working state.

本实施例中所提供的车辆热管理方法，根据第三工作模式，控制热泵空调系统中的冷凝器2进行加热、或者冷却蒸发器9进行冷却、或者冷凝器2和冷却蒸发器9不工作；控制电驱动冷却系统中的散热器20切换工作状态；控制加热蒸发支路中的加热蒸发器11切换工作状态，在第三工作模式下，加热蒸发支路可以为动力电池支路进行温度调节，以保证车辆热管理系统正常工作，同时热泵空调系统根据实际需求，利用动力电池14产生的多余热量进行加热或者冷却，以提高整车的能量利用效率，增加电动车辆的续航行驶里程。The vehicle thermal management method provided in this embodiment, according to the third working mode, controls thecondenser 2 in the heat pump air-conditioning system to heat, or the cooling evaporator 9 to cool, or thecondenser 2 and the cooling evaporator 9 do not work; Control theradiator 20 in the electric drive cooling system to switch the working state; control theheating evaporator 11 in the heating and evaporating branch to switch the working state. In the third working mode, the heating and evaporating branch can perform temperature adjustment for the power battery branch. In order to ensure the normal operation of the vehicle thermal management system, at the same time, the heat pump air-conditioning system uses the excess heat generated by thepower battery 14 to heat or cool according to actual needs, so as to improve the energy utilization efficiency of the vehicle and increase the cruising range of the electric vehicle.

作为一实施例，步骤S602，包括如下示例：As an embodiment, step S602 includes the following example:

作为一示例，若环境实际温度小于第一环境温度、电池实际温度小于第一电池温度、驱动发热量在第一发热量和第二发热量之间、且所述散热器需求为无需工作，则切换七通阀的阀门工作状态，将第三隔离模式确定为目标工作模式；As an example, if the actual temperature of the environment is lower than the first ambient temperature, the actual temperature of the battery is lower than the first battery temperature, the driving calorific value is between the first calorific value and the second calorific value, and the radiator requires no work, then Switch the valve working state of the seven-way valve, and determine the third isolation mode as the target working mode;

本示例中，将第三隔离模式105确定为目标工作模式，则加热蒸发支路与动力电池支路通过七通阀13连通形成回路，则加热蒸发支路的PTC加热器16可以为热泵空调系统和动力电池14提供热量，以保证热泵空调系统和动力电池14正常工作；隔离散热支路形成回路，电驱动冷却系统进行内循环保温，以保证电驱动冷却系统正常工作。In this example, thethird isolation mode 105 is determined as the target operating mode, then the heating and evaporation branch is connected with the power battery branch to form a circuit through the seven-way valve 13, and thePTC heater 16 of the heating and evaporation branch can be a heat pump air-conditioning system Provide heat with thepower battery 14 to ensure the normal operation of the heat pump air-conditioning system and thepower battery 14; isolate the heat dissipation branch to form a loop, and the electric drive cooling system performs internal circulation insulation to ensure the normal operation of the electric drive cooling system.

作为一示例，若环境实际温度小于第一环境温度、电池实际温度小于第一电池温度、驱动发热量大于第二发热量、且所述散热器需求为需工作，则切换七通阀的阀门工作状态，将第三连通模式确定为目标工作模式。As an example, if the actual temperature of the environment is lower than the first ambient temperature, the actual temperature of the battery is lower than the first battery temperature, the driving calorific value is greater than the second calorific value, and the radiator needs to work, then switch the valve of the seven-way valve to work state, and determine the third connectivity mode as the target working mode.

本示例，将第三连通模式106确定为目标工作模式，则加热蒸发支路与动力电池支路通过七通阀13连通形成回路，则加热蒸发支路的PTC加热器16可以为热泵空调系统和动力电池14提供热量，以保证热泵空调系统和动力电池14正常工作；连通散热支路形成回路形成回路，散热器20可以为电机总成散热，以保证电驱动冷却系统正常工作。In this example, if thethird communication mode 106 is determined as the target operating mode, then the heating and evaporation branch is connected with the power battery branch to form a circuit through the seven-way valve 13, and thePTC heater 16 of the heating and evaporation branch can be a heat pump air-conditioning system and Thepower battery 14 provides heat to ensure the normal operation of the heat pump air-conditioning system and thepower battery 14; the heat dissipation branch is connected to form a loop to form a loop, and theradiator 20 can dissipate heat for the motor assembly to ensure the normal operation of the electric drive cooling system.

作为一示例，若环境实际温度小于第一环境温度、电池实际温度大于第三电池温度、驱动发热量在第一发热量和第二发热量之间、且所述散热器需求为无需工作，则切换七通阀的阀门工作状态，将第三隔离模式确定为目标工作模式。As an example, if the actual temperature of the environment is lower than the first ambient temperature, the actual temperature of the battery is greater than the third battery temperature, the driving calorific value is between the first calorific value and the second calorific value, and the radiator requires no work, then Switch the valve working state of the seven-way valve, and determine the third isolation mode as the target working mode.

本示例，将第三隔离模式105确定为目标工作模式，则加热蒸发支路与动力电池支路通过七通阀13连通形成回路，则加热蒸发支路的PTC加热器16不工作，此时，环境实际温度小于第一环境温度，则热泵空调系统进行加热，动力电池14产生的热量较多可以为热泵空调系统中冷却蒸发器9的工作提供热量，热泵空调系统的冷却蒸发器9可以冷却动力电池14，提高整车热量使用效率，提高热泵空调系统性能。可以为热泵空调系统和动力电池14提供热量，以保证热泵空调系统和动力电池14正常工作；隔离散热支路形成回路，电驱动冷却系统进行内循环保温，以保证电驱动冷却系统正常工作。In this example, thethird isolation mode 105 is determined as the target operating mode, then the heating evaporation branch and the power battery branch are connected to form a circuit through the seven-way valve 13, and thePTC heater 16 of the heating evaporation branch does not work. At this time, If the actual temperature of the environment is lower than the first ambient temperature, the heat pump air-conditioning system heats up, and the heat generated by thepower battery 14 can provide heat for the work of the cooling evaporator 9 in the heat pump air-conditioning system, and the cooling evaporator 9 of the heat pump air-conditioning system can cool the power Thebattery 14 improves the heat utilization efficiency of the vehicle and improves the performance of the heat pump air-conditioning system. It can provide heat for the heat pump air-conditioning system and thepower battery 14 to ensure the normal operation of the heat pump air-conditioning system and thepower battery 14; isolate the heat dissipation branch to form a loop, and the electric drive cooling system performs internal circulation heat preservation to ensure the normal operation of the electric drive cooling system.

作为一示例，若环境实际温度小于第一环境温度、电池实际温度大于第三电池温度、驱动发热量大于第二发热量、且所述散热器需求为需工作，则切换七通阀的阀门工作状态，将第三连通模式确定为目标工作模式。As an example, if the actual temperature of the environment is lower than the first ambient temperature, the actual temperature of the battery is greater than the third battery temperature, the driving calorific value is greater than the second calorific value, and the radiator needs to work, then switch the valve of the seven-way valve to work state, and determine the third connectivity mode as the target working mode.

本示例，将第三连通模式106确定为目标工作模式，则加热蒸发支路与动力电池支路通过七通阀13连通形成回路，则加热蒸发支路的PTC加热器16不工作，此时，环境实际温度小于第一环境温度，则热泵空调系统进行加热；动力电池14产生的热量较多可以为热泵空调系统中冷却蒸发器9的工作提供热量，热泵空调系统的冷却蒸发器9可以冷却动力电池14，提高整车热量使用效率，提高热泵空调系统性能。连通散热支路形成回路形成回路，散热器20可以为电机总成散热，以保证电驱动冷却系统正常工作。In this example, thethird communication mode 106 is determined as the target operating mode, then the heating evaporation branch and the power battery branch are connected to form a circuit through the seven-way valve 13, and thePTC heater 16 of the heating evaporation branch does not work. At this time, If the actual temperature of the environment is lower than the first ambient temperature, the heat pump air-conditioning system will be heated; the heat generated by thepower battery 14 can provide heat for the work of the cooling evaporator 9 in the heat pump air-conditioning system, and the cooling evaporator 9 of the heat pump air-conditioning system can cool the power Thebattery 14 improves the heat utilization efficiency of the vehicle and improves the performance of the heat pump air-conditioning system. The heat dissipation branch is connected to form a loop to form a loop, and theradiator 20 can dissipate heat for the motor assembly to ensure the normal operation of the electric drive cooling system.

作为一示例，若环境实际温度大于第二环境温度、电池实际温度大于第三电池温度、驱动发热量在第一发热量和第二发热量之间、且所述散热器需求为无需工作，则切换七通阀的阀门工作状态，将第三隔离模式确定为目标工作模式。As an example, if the actual temperature of the environment is greater than the second ambient temperature, the actual temperature of the battery is greater than the third battery temperature, the driving heat generation value is between the first heat generation value and the second heat generation value, and the radiator requirement is no need to work, then Switch the valve working state of the seven-way valve, and determine the third isolation mode as the target working mode.

本示例，将第三隔离模式105确定为目标工作模式，则加热蒸发支路与动力电池支路通过七通阀13连通形成回路，则加热蒸发支路的PTC加热器16不工作，此时，环境实际温度大于第二环境温度，则热泵空调系统进行冷却，动力电池14产生的热量较多可以为热泵空调系统中冷却蒸发器9的工作提供热量，热泵空调系统的冷却蒸发器9可以冷却动力电池14，提高整车热量使用效率，提高热泵空调系统性能。可以为热泵空调系统和动力电池14提供热量，以保证热泵空调系统和动力电池14正常工作；隔离散热支路形成回路，电驱动冷却系统进行内循环保温，以保证电驱动冷却系统正常工作。In this example, thethird isolation mode 105 is determined as the target operating mode, then the heating evaporation branch and the power battery branch are connected to form a circuit through the seven-way valve 13, and thePTC heater 16 of the heating evaporation branch does not work. At this time, If the actual temperature of the environment is greater than the second ambient temperature, the heat pump air-conditioning system will be cooled, and more heat generated by thepower battery 14 can provide heat for the work of the cooling evaporator 9 in the heat pump air-conditioning system, and the cooling evaporator 9 of the heat pump air-conditioning system can cool the power Thebattery 14 improves the heat utilization efficiency of the vehicle and improves the performance of the heat pump air-conditioning system. It can provide heat for the heat pump air-conditioning system and thepower battery 14 to ensure the normal operation of the heat pump air-conditioning system and thepower battery 14; isolate the heat dissipation branch to form a loop, and the electric drive cooling system performs internal circulation heat preservation to ensure the normal operation of the electric drive cooling system.

作为一示例，若环境实际温度大于第二环境温度、电池实际温度大于第三电池温度、驱动发热量大于第二发热量、且所述散热器需求为需工作，则切换七通阀的阀门工作状态，将第三连通模式确定为目标工作模式。As an example, if the actual temperature of the environment is greater than the second ambient temperature, the actual temperature of the battery is greater than the third battery temperature, the driving calorific value is greater than the second calorific value, and the radiator needs to work, then switch the valve of the seven-way valve to work state, and determine the third connectivity mode as the target working mode.

本示例，将第三连通模式106确定为目标工作模式，则加热蒸发支路与动力电池支路通过七通阀13连通形成回路，则加热蒸发支路的PTC加热器16不工作，此时，环境实际温度大于第二环境温度，则热泵空调系统进行冷却或者不工作，动力电池14产生的热量较多可以为热泵空调系统中冷却蒸发器9的工作提供热量，热泵空调系统的冷却蒸发器9 可以冷却动力电池14，提高整车热量使用效率，提高热泵空调系统性能。连通散热支路形成回路形成回路，散热器20可以为电机总成散热，以保证电驱动冷却系统正常工作。In this example, thethird communication mode 106 is determined as the target operating mode, then the heating evaporation branch and the power battery branch are connected to form a circuit through the seven-way valve 13, and thePTC heater 16 of the heating evaporation branch does not work. At this time, If the actual temperature of the environment is greater than the second ambient temperature, the heat pump air-conditioning system is cooled or does not work, and the heat generated by thepower battery 14 can provide heat for the work of the cooling evaporator 9 in the heat pump air-conditioning system. The cooling evaporator 9 of the heat pump air-conditioning system It can cool thepower battery 14, improve the heat utilization efficiency of the whole vehicle, and improve the performance of the heat pump air-conditioning system. The heat dissipation branch is connected to form a loop to form a loop, and theradiator 20 can dissipate heat for the motor assembly to ensure the normal operation of the electric drive cooling system.

本实施例所提供的车辆热管理方法，环境实际温度、电池实际温度、驱动发热量和散热器20确定车辆热管理系统的目标工作模式，以提高整车热量使用效率，提高热泵空调系统性能。In the vehicle thermal management method provided in this embodiment, the actual temperature of the environment, the actual temperature of the battery, the heat generated by the drive, and theradiator 20 determine the target operating mode of the vehicle thermal management system, so as to improve the efficiency of heat use in the vehicle and improve the performance of the heat pump air conditioning system.

作为一示例，如图7所示，步骤S302和S303，即根据车辆当前数据，切换七通阀的阀门工作状态，确定目标工作模式；根据目标工作模式，控制与目标工作模式相对应的目标执行器件工作，包括：As an example, as shown in Figure 7, steps S302 and S303, that is, according to the current data of the vehicle, switch the valve working state of the seven-way valve to determine the target working mode; according to the target working mode, control the target execution corresponding to the target working mode device operation, including:

S701：车辆当前数据包括当前温控指令，或者车辆当前数据包括当前温控指令和电机总成对应的驱动发热量。S701: The current vehicle data includes the current temperature control command, or the current vehicle data includes the current temperature control command and the corresponding driving heat output of the motor assembly.

其中，当前温控指令是用于控制动力电池14进行均温的指令。Wherein, the current temperature control instruction is an instruction for controlling thepower battery 14 to perform temperature equalization.

S702：若当前温控指令为均温温控指令，或者车辆当前数据包括当前温控指令和电机总成对应的驱动发热量，则切换七通阀的阀门工作状态，将第三工作模式确定为目标工作模式。S702: If the current temperature control command is the uniform temperature control command, or the current data of the vehicle includes the current temperature control command and the corresponding driving heat output of the motor assembly, switch the valve working state of the seven-way valve, and determine the third working mode as target working mode.

本实施例中，当当前温控指令为均温温控指令，或者车辆当前数据包括当前温控指令和电机总成对应的驱动发热量，则将第三工作模式作为目标工作模式，以提高控制效率；可以理解地，此时，车辆热管理系统的其他器件可以根据实际需要，工作或者不工作。In this embodiment, when the current temperature control command is a uniform temperature control command, or the current data of the vehicle includes the current temperature control command and the corresponding driving heat output of the motor assembly, the third working mode is taken as the target working mode to improve control Efficiency; Understandably, at this time, other components of the vehicle thermal management system may work or not work according to actual needs.

S703：根据第三工作模式，控制热泵空调系统中的冷凝器进行加热、或者冷却蒸发器进行冷却、或者冷凝器和冷却蒸发器不工作；控制电驱动冷却系统中的散热器切换工作状态；控制加热蒸发支路中的加热蒸发器切换工作状态。S703: According to the third working mode, control the condenser in the heat pump air-conditioning system to heat, or the cooling evaporator to cool, or the condenser and the cooling evaporator to not work; control the radiator in the electric drive cooling system to switch the working state; control The heating evaporator in the heating evaporating branch switches the working state.

本实施例中，在第三工作模式下，车辆热管理系统的其他器件可以根据实际需要，工作或者不工作，灵活性较强。In this embodiment, in the third working mode, other components of the vehicle thermal management system can work or not work according to actual needs, and the flexibility is strong.

本实施例所提供的车辆热管理方法，当前温控指令为均温温控指令，或者车辆当前数据包括当前温控指令和电机总成对应的驱动发热量，则切换七通阀13的阀门工作状态，将第三工作模式确定为目标工作模式，以提高控制效率。根据第三工作模式，控制热泵空调系统中的冷凝器2进行加热、或者冷却蒸发器9进行冷却、或者冷凝器2和冷却蒸发器 9不工作；控制电驱动冷却系统中的散热器20切换工作状态；控制加热蒸发支路中的加热蒸发器11切换工作状态，灵活性较强。In the vehicle thermal management method provided in this embodiment, if the current temperature control command is a uniform temperature control command, or the current data of the vehicle includes the current temperature control command and the corresponding drive heat generation of the motor assembly, then switch the valve operation of the seven-way valve 13 state, and determine the third working mode as the target working mode to improve control efficiency. According to the third working mode, thecondenser 2 in the heat pump air-conditioning system is controlled to heat, or the cooling evaporator 9 is cooled, or thecondenser 2 and the cooling evaporator 9 do not work; theradiator 20 in the electric drive cooling system is controlled to switch work State: control theheating evaporator 11 in the heating evaporation branch to switch the working state, which is more flexible.

在一实施例中，步骤S702，包括如下示例：In one embodiment, step S702 includes the following examples:

作为一示例，若当前温控指令为均温温控指令，则将第三隔离模式确定为目标工作模式。As an example, if the current temperature control command is an even temperature control command, the third isolation mode is determined as the target working mode.

本示例中，当将第三隔离模式105确定为目标工作模式，此时加热蒸发支路与动力电池支路通过七通阀13连通形成回路，以利用加热蒸发支路的加热蒸发器11冷却动力电池14，或者PTC加热器16为动力电池14提供热量，使动力电池14保持均温。In this example, when thethird isolation mode 105 is determined as the target working mode, the heating evaporation branch and the power battery branch are connected through the seven-way valve 13 to form a circuit, so as to use theheating evaporator 11 of the heating evaporation branch to cool the power Thebattery 14 or thePTC heater 16 provides heat for thepower battery 14 to keep thepower battery 14 at an even temperature.

作为另一示例，若车辆当前数据包括当前温控指令，且电机总成对应的驱动发热量大于第二发热量，则将第三连通模式确定为目标工作模式。As another example, if the current data of the vehicle includes the current temperature control instruction, and the corresponding driving calorific value of the motor assembly is greater than the second calorific value, then the third communication mode is determined as the target operating mode.

本示例中，当将第三连通模式106确定为目标工作模式，加热蒸发支路与动力电池支路通过七通阀13连通形成回路，以利用加热蒸发支路的加热蒸发器11冷却动力电池14，或者PTC加热器16为动力电池14提供热量，使动力电池14保持均温。电机总成对应的驱动发热量大于第二发热量，则利用散热器20为电机总成进行散热，保证电机总成可正常工作。In this example, when thethird communication mode 106 is determined as the target working mode, the heating evaporation branch and the power battery branch are connected through the seven-way valve 13 to form a circuit, so as to cool thepower battery 14 by using theheating evaporator 11 of the heating evaporation branch , or thePTC heater 16 provides heat for thepower battery 14 to keep thepower battery 14 at an even temperature. If the corresponding driving calorific value of the motor assembly is greater than the second calorific value, theradiator 20 is used to dissipate heat for the motor assembly to ensure that the motor assembly can work normally.

本实施例所提供的车辆热管理方法，根据当前温控指令，或者，当前温控指令和电机总成对应的驱动发热量确定车辆热管理系统的目标工作模式，以确保车辆热管理系统可正常工作。The vehicle thermal management method provided in this embodiment determines the target operating mode of the vehicle thermal management system according to the current temperature control command, or the current temperature control command and the corresponding driving heat output of the motor assembly, so as to ensure that the vehicle thermal management system can operate normally. Work.

以上所述实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围，均应包含在本发明的保护范围之内。The above-described embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still carry out the foregoing embodiments Modifications to the technical solutions recorded in the examples, or equivalent replacement of some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should be included in within the protection scope of the present invention.

Claims (18)

1. The vehicle thermal management system is characterized by comprising a heat pump air conditioning system, a battery temperature control system, an electric drive cooling system and a seven-way valve; the battery temperature control system comprises a power battery branch and a heating evaporation branch; the heat pump air conditioning system is connected with the heating evaporation branch; the power battery branch, the heating evaporation branch and the electric drive cooling system are connected through the seven-way valve, the valve working state of the seven-way valve is switched, and a target working mode is determined;

the target working mode comprises a first working mode, a second working mode or a third working mode;

the first working mode is a working mode that the electric drive cooling system and the heating evaporation branch are communicated through the seven-way valve to form a loop, and the power battery branch is communicated through the seven-way valve to form a loop;

the second working mode is a working mode that the electric drive cooling system and the power battery branch are communicated through the seven-way valve to form a loop, and the heating evaporation branch is communicated through the seven-way valve to form a loop;

the third working mode is a working mode that the heating evaporation branch and the power battery branch are communicated through the seven-way valve to form a loop, and the electric drive cooling system is communicated through the seven-way valve to form a loop.

2. The vehicle thermal management system of claim 1, wherein the electrically driven cooling system comprises an isolated heat sink branch and a connected heat sink branch;

the first working mode comprises a first isolation mode and a first communication mode; the first isolation mode is a working mode that the isolation radiating branch and the heating evaporating branch are communicated through the seven-way valve to form a loop, and the power battery branch is communicated through the seven-way valve to form a loop; the first communication mode is a working mode that the communication radiating branch and the heating evaporating branch are communicated through the seven-way valve to form a loop, and the power battery branch is communicated through the seven-way valve to form a loop;

the second working mode comprises a second isolation mode and a second communication mode; the second isolation mode is a working mode that the isolation radiating branch is communicated with the power battery branch through the seven-way valve to form a loop, and the heating evaporating branch is communicated with the seven-way valve to form a loop; the second communication mode is a working mode that the communication radiating branch and the power battery branch are communicated through the seven-way valve to form a loop, and the heating evaporation branch is communicated through the seven-way valve to form a loop;

The third working mode comprises a third isolation mode and a third communication mode; the third isolation mode is a working mode that the heating evaporation branch is communicated with the power battery branch through the seven-way valve to form a loop, and the isolation heat dissipation branch is communicated with the seven-way valve to form a loop; the third communication mode is a working mode that the heating evaporation branch and the power battery branch are communicated through the seven-way valve to form a loop, and the communication heat dissipation branch is communicated through the seven-way valve to form a loop.

3. The vehicle thermal management system of claim 2, wherein the isolated heat dissipation branch comprises a drive electric water pump and motor assembly interconnected;

the communication heat dissipation branch comprises a driving electric water pump, a motor assembly and a radiator which are connected with each other; one end of the radiator is connected with the motor, and the other end of the radiator is connected with the seven-way valve.

4. A vehicle thermal management system according to claim 3, wherein the heating evaporation branch comprises a heating evaporator, a PTC heater and an evaporation electric water pump connected to each other.

5. The vehicle thermal management system of claim 4, wherein the heat pump air conditioning system comprises a compressor, a condenser, a heating evaporator, a liquid storage tank, and a valve assembly; the valve assembly comprises a second stop valve and a third electronic expansion valve;

One end of the compressor is connected with the condenser, and the other end of the compressor is connected with the liquid storage tank;

one end of the second stop valve is connected with the condenser, and the other end of the second stop valve is connected with the third electronic expansion valve;

one end of the heating evaporator is connected with the third electronic expansion valve, and the other end of the heating evaporator is connected with the liquid storage tank.

6. The vehicle thermal management system of claim 5, wherein the heat pump air conditioning system further comprises an external heat exchanger; the valve assembly further comprises a first electronic expansion valve and a first stop valve;

one end of the first electronic expansion valve is connected with the condenser, and the other end of the first electronic expansion valve is connected with the external heat exchanger;

one end of the first stop valve is connected with the external heat exchanger, and the other end of the first stop valve is connected with the liquid storage tank.

7. The vehicle thermal management system of claim 6, wherein the heat pump air conditioning system further comprises a cooling fan disposed opposite the radiator and the external heat exchanger.

8. The vehicle thermal management system of claim 6, wherein the heat pump air conditioning system further comprises a cooling evaporator; the valve assembly comprises a one-way valve and a second electronic expansion valve;

The inlet end of the one-way valve is connected with the external heat exchanger, and the outlet end of the one-way valve is connected with the second electronic expansion valve and the third electronic expansion valve;

the cooling evaporator is connected with the second electronic expansion valve, and the other end of the cooling evaporator is connected with the liquid storage tank.

9. The vehicle thermal management system of claim 8, wherein the heat pump air conditioning system further comprises a blower disposed opposite the condenser and the cooling evaporator and positioned at an air intake of the passenger compartment.

10. A vehicle thermal management method for use in a vehicle thermal management system according to any one of claims 1-9, comprising:

collecting current data of a vehicle;

switching the valve working state of the seven-way valve according to the current data of the vehicle, and determining a target working mode;

and controlling the target execution device corresponding to the target working mode to work according to the target working mode.

11. The method of vehicle thermal management according to claim 10, wherein said switching the valve operating state of the seven-way valve based on the vehicle current data, determining a target operating mode, comprises:

the current data of the vehicle comprises the actual temperature of the environment, the actual temperature of the battery corresponding to the power battery branch and the driving heating value corresponding to the motor assembly;

The step of switching the valve working state of the seven-way valve according to the current data of the vehicle to determine a target working mode comprises the following steps:

if the actual ambient temperature is less than the first ambient temperature, the actual battery temperature is between the first battery temperature and the second battery temperature, and the driving heating value is not less than the first heating value, switching the valve working state of the seven-way valve, and determining a first working mode as the target working mode;

the controlling the target execution device corresponding to the target working mode to work according to the target working mode comprises the following steps:

according to the first working mode, a condenser in the heat pump air conditioning system is controlled to heat, a radiator in the electric drive cooling system is controlled to switch working states, and a heating evaporator in the heating evaporation branch is controlled to switch working states.

12. The vehicle thermal management method according to claim 11, wherein switching the valve operation state of the seven-way valve if the ambient actual temperature is less than a first ambient temperature, the battery actual temperature is between a first battery temperature and a second battery temperature, and the driving heat generation amount is not less than a first heat generation amount, determining a first operation mode as the target operation mode includes:

If the actual ambient temperature is less than the first ambient temperature, the actual battery temperature is between the first battery temperature and the second battery temperature, and the driving heating value is greater than the second heating value, switching a valve working state of the seven-way valve, and determining a first isolation mode as the target working mode;

and if the actual ambient temperature is smaller than the first ambient temperature, the actual battery temperature is between the first battery temperature and the second battery temperature, and the driving heating value is between the first heating value and the second heating value, switching the valve working state of the seven-way valve, and determining a first communication mode as the target working mode.

13. The method of vehicle thermal management according to claim 10, wherein said switching the valve operating state of the seven-way valve based on the vehicle current data, determining a target operating mode, comprises:

the current data of the vehicle comprise the actual temperature of the environment, the actual temperature of the battery corresponding to the power battery branch, the driving heating value corresponding to the motor assembly and the radiator requirement;

the step of switching the valve working state of the seven-way valve according to the current data of the vehicle to determine a target working mode comprises the following steps:

If the actual ambient temperature is less than the first ambient temperature, the actual battery temperature is less than the first battery temperature, the driving heating value is greater than the second heating value, and the radiator is required to be in no-operation, switching a valve working state of the seven-way valve, and determining a second working mode as the target working mode;

or,

if the actual ambient temperature is less than the first ambient temperature, the actual battery temperature is between the first battery temperature and the second battery temperature, the driving heating value is less than the first heating value, and the radiator is required to be in no-operation, switching a valve working state of the seven-way valve, and determining a second working mode as the target working mode;

or,

if the actual ambient temperature is between the first ambient temperature and the second ambient temperature, the actual battery temperature is between the second battery temperature and the third battery temperature, the driving heating value is between the first heating value and the second heating value, and the radiator is required to work, switching a valve working state of the seven-way valve, and determining a second working mode as the target working mode;

the controlling the target execution device corresponding to the target working mode to work according to the target working mode comprises the following steps:

According to the second working mode, a condenser in the heat pump air conditioning system is controlled to heat or a cooling evaporator is controlled to cool, a driving electric water pump in the electric driving cooling system is controlled to switch working states, and a heating evaporator in the heating evaporation branch is controlled to switch working states.

14. The vehicle thermal management method of claim 13, wherein the vehicle thermal management method comprises:

if the actual ambient temperature is less than a first ambient temperature, the actual battery temperature is less than a first battery temperature, the driving heating value is greater than a second heating value, and the radiator is required to be operated, or if the actual ambient temperature is less than the first ambient temperature, the actual battery temperature is between the first battery temperature and the second battery temperature, the driving heating value is less than the first heating value, and the radiator is required to be operated, switching a valve operating state of the seven-way valve, and determining a second isolation mode as the target operating mode;

and if the actual ambient temperature is between the first ambient temperature and the second ambient temperature, the actual battery temperature is between the second battery temperature and the third battery temperature, the driving heating value is between the first heating value and the second heating value, and the radiator is required to work, switching the valve working state of the seven-way valve, and determining the second communication mode as the target working mode.

15. The method of vehicle thermal management according to claim 10, wherein said switching the valve operating state of the seven-way valve based on the vehicle current data, determining a target operating mode, comprises:

the current data of the vehicle comprise the actual temperature of the environment, the actual temperature of the battery corresponding to the power battery branch, the driving heating value corresponding to the motor assembly and the radiator requirement;

the step of switching the valve working state of the seven-way valve according to the current data of the vehicle to determine a target working mode comprises the following steps:

if the actual ambient temperature is less than the first ambient temperature, the actual battery temperature is less than the first battery temperature, the driving heating value is between the first heating value and the second heating value, and the radiator is not required to work, switching a valve working state of the seven-way valve, and determining a third working mode as the target working mode;

or,

if the actual ambient temperature is less than the first ambient temperature, the actual battery temperature is less than the first battery temperature, the driving heating value is greater than the second heating value, and the radiator is required to work, switching a valve working state of the seven-way valve, and determining a third working mode as the target working mode;

Or,

if the actual ambient temperature is less than the first ambient temperature, the actual battery temperature is greater than the third battery temperature, the driving heating value is not less than the third heating value, and the radiator is required to work or not to work, switching a valve working state of the seven-way valve, and determining a third working mode as the target working mode;

or,

if the actual ambient temperature is greater than the second ambient temperature, the actual battery temperature is greater than the third battery temperature, the driving heating value is not less than the first heating value, and the radiator is required to work or not to work, switching the valve working state of the seven-way valve, and determining a third working mode as the target working mode;

according to the third working mode, controlling a condenser in the heat pump air conditioning system to heat, or controlling a cooling evaporator to cool, or controlling the condenser and the cooling evaporator to be not working; controlling a radiator in the electric drive cooling system to switch working states; and controlling the heating evaporator in the heating evaporation branch to switch the working state.

16. The vehicle thermal management method of claim 15, wherein the vehicle thermal management method comprises:

If the actual ambient temperature is less than the first ambient temperature, the actual battery temperature is less than the first battery temperature, the driving heating value is between the first heating value and the second heating value, and the radiator needs to work, switching the valve working state of the seven-way valve, and determining a third isolation mode as the target working mode;

if the actual ambient temperature is less than the first ambient temperature, the actual battery temperature is less than the first battery temperature, the driving heating value is greater than the second heating value, and the radiator is required to work, switching a valve working state of the seven-way valve, and determining a third communication mode as the target working mode;

if the actual ambient temperature is less than the first ambient temperature, the actual battery temperature is greater than the third battery temperature, the driving heating value is between the first heating value and the second heating value, and the radiator needs to work, switching the valve working state of the seven-way valve, and determining a third isolation mode as the target working mode;

if the actual ambient temperature is less than the first ambient temperature, the actual battery temperature is greater than the third battery temperature, the driving heating value is greater than the second heating value, and the radiator is required to work, switching a valve working state of the seven-way valve, and determining a third communication mode as the target working mode;

If the actual ambient temperature is greater than the second ambient temperature, the actual battery temperature is greater than the third battery temperature, the driving heating value is between the first heating value and the second heating value, and the radiator needs to work, switching a valve working state of the seven-way valve, and determining a third isolation mode as the target working mode;

and if the actual ambient temperature is greater than the second ambient temperature, the actual battery temperature is greater than the third battery temperature, the driving heating value is greater than the second heating value, and the radiator is required to work, switching the valve working state of the seven-way valve, and determining a third communication mode as the target working mode.

17. The method of vehicle thermal management according to claim 10, wherein said switching the valve operating state of the seven-way valve based on the vehicle current data, determining a target operating mode, comprises:

the vehicle current data comprise a current temperature control instruction or the vehicle current data comprise a current temperature control instruction and a driving heating value corresponding to the motor assembly;

the controlling the target execution device corresponding to the target working mode to work according to the target working mode comprises the following steps:

If the current temperature control instruction is a temperature equalization temperature control instruction or the current data of the vehicle comprises the current temperature control instruction and the driving heating value corresponding to the motor assembly, switching the valve working state of the seven-way valve, and determining a third working mode as the target working mode;

according to the third working mode, controlling a condenser in the heat pump air conditioning system to heat, or controlling a cooling evaporator to cool, or controlling the condenser and the cooling evaporator to be not working; controlling a radiator in the electric drive cooling system to switch working states; and controlling the heating evaporator in the heating evaporation branch to switch the working state.

18. The vehicle thermal management method according to claim 17, wherein if the current temperature control instruction is a temperature equalization temperature control instruction or the current vehicle data includes a current temperature control instruction and a driving heat generation amount corresponding to the motor assembly, switching a valve operation state of the seven-way valve, and determining a third operation mode as the target operation mode includes:

if the current temperature control instruction is a uniform temperature control instruction, switching the valve working state of the seven-way valve, and determining a third isolation mode as the target working mode;

And if the current temperature control instruction is a uniform temperature control instruction and the driving heating value corresponding to the motor assembly is larger than the second heating value, switching the valve working state of the seven-way valve, and determining a third communication mode as the target working mode.

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