一、技术领域1. Technical field
本发明涉及汽车动力电池组的温控技术领域，尤其是涉及一种基于液体介质的汽车动力电池组温控装置。The invention relates to the technical field of temperature control of automobile power battery packs, in particular to a liquid medium-based temperature control device for automobile power battery packs.
二、背景技术2. Background technology
随着能源的日益减少，环境的恶化，发展新能源汽车是目前减少能源消耗和环境污染的有效途径，其中混合动力汽车和电动汽车是新能源汽车中的典型代表。在这类汽车中，通常将电池单体以串并联形式组成电池组，用于提供合适的电压和足够的电量，在汽车运行过程中，由于电池内部的化学反应及电池本身的内阻作用，电池单体的温度会不断上升；同时由于各电池单体之间存在制造误差造成的电池内阻和内部化学成分的差异，导致各电池单体的发热量不同，再加上各电池单体在电池组中的位置因素，造成各电池单体本身以及电池单体之间的温度分布不均匀，从而影响电池的寿命、安全性和可靠性。另一方面，如果环境温度较低，在冷启动时动力电池电芯的导电性和物质活性会受到影响，从而降低电池容量，因此对汽车动力电池组的温度控制尤为重要。With the decrease of energy and the deterioration of the environment, the development of new energy vehicles is an effective way to reduce energy consumption and environmental pollution, among which hybrid vehicles and electric vehicles are typical representatives of new energy vehicles. In this type of car, the battery cells are usually connected in series and parallel to form a battery pack to provide suitable voltage and sufficient power. During the operation of the car, due to the chemical reaction inside the battery and the internal resistance of the battery itself, The temperature of the battery cells will continue to rise; at the same time, due to the differences in the internal resistance and internal chemical composition of the batteries caused by manufacturing errors among the battery cells, the heat generation of each battery cell is different. The position factor in the battery pack causes the temperature distribution of each battery cell itself and among the battery cells to be uneven, thus affecting the life, safety and reliability of the battery. On the other hand, if the ambient temperature is low, the conductivity and material activity of the power battery cell will be affected during cold start, thereby reducing the battery capacity, so the temperature control of the automotive power battery pack is particularly important.
目前汽车动力电池组通常采用的散热方式主要有风冷和液冷两种。风冷散热方式即向电池组内通风，通过空气与电池组的对流换热带走热量，而液冷散热方式则通过液体直接或间接与电池接触，通过对流带走热量。中国国家知识产权局专利局于2016年04月13日公开了一项公开号为CN9548121267A，名称为“一种电动汽车的电池包散热装置、系统及方法”；该技术通过鼓风机引入外界空气，通过驾驶室空调系统冷却空气，根据温度环境的不同引入不同温度的气流对电池组散热处理。但是这种散热方式的散热效率较低，且电池单体间的温度均匀性较差。中国国家知识产权局专利局于2017年05月9日公开了一项公开号为CN96654417A，名称为“电池液冷装置和电池系统”；该技术在液冷板上开设通孔，通孔内加热熔材料，液体在液冷板通道内流动带走热量，电池温度过高时，热熔材料溶解，液体流出直接与电池单体接触，起到灭火装置的功能。这种散热方式的散热效率较高，但是由于通道细长，其沿程压力损失和系统的压降较高，泵的能量消耗较大，同时电池单体本身的温度均匀性不佳，也难以满足电池组的温度均匀性要求。At present, the heat dissipation methods commonly used in automotive power battery packs are mainly air-cooled and liquid-cooled. The air-cooled heat dissipation method is to ventilate into the battery pack, and remove heat through the convection heat exchange between the air and the battery pack, while the liquid-cooled heat dissipation method uses the liquid to directly or indirectly contact the battery to remove heat through convection. The Patent Office of the State Intellectual Property Office of China published a publication number CN9548121267A on April 13, 2016, titled "A battery pack cooling device, system and method for electric vehicles"; The cab air-conditioning system cools the air and introduces different temperature airflows to dissipate heat from the battery pack according to different temperature environments. However, the heat dissipation efficiency of this heat dissipation method is low, and the temperature uniformity among the battery cells is poor. The Patent Office of the State Intellectual Property Office of China published a publication number CN96654417A on May 9, 2017, titled "Battery Liquid Cooling Device and Battery System"; Melt material, the liquid flows in the channel of the liquid cold plate to take away heat. When the temperature of the battery is too high, the hot melt material dissolves, and the liquid flows out and directly contacts the battery cell, which functions as a fire extinguishing device. This heat dissipation method has high heat dissipation efficiency, but due to the slender channel, the pressure loss along the path and the pressure drop of the system are high, and the energy consumption of the pump is large. At the same time, the temperature uniformity of the battery itself is not good, and it is difficult to Meet the temperature uniformity requirements of the battery pack.
三、发明内容3. Contents of the invention
本发明的目的是克服现有技术的不足，提供一种基于液体介质的汽车动力电池组温控装置。The object of the present invention is to overcome the deficiencies of the prior art, and provide a temperature control device for an automobile power battery pack based on a liquid medium.
本发明与汽车动力电池组的电池单体组合安装在汽车上，并与汽车的ECU相连接，其技术方案为由进水总管、进水支管、电控调速阀、液冷板、出水支管、热电偶、出水总管、电池单体、散热器、冷却水箱、定压泵、加热线圈、电子控制单元、控制开关组成；The present invention is combined with the battery cells of the automobile power battery pack and installed on the automobile, and is connected with the ECU of the automobile. , thermocouple, water outlet main pipe, battery cell, radiator, cooling water tank, constant pressure pump, heating coil, electronic control unit, and control switch;
所述的液冷板由液冷板壳体、液冷板进水通道、液冷板竖直通道和液冷板出水通道构成，液冷板竖直通道均匀分布在液冷板壳体内，并与液冷板进水通道和液冷板出水通道相连接；为了增加换热面积，最好在每个竖直通道内腔壁沿流体方向均匀分布凸肋；液冷板由导热材料制成；The liquid-cooled plate is composed of a liquid-cooled plate shell, a liquid-cooled plate water inlet channel, a liquid-cooled plate vertical channel and a liquid-cooled plate outlet channel, the vertical channel of the liquid-cooled plate is evenly distributed in the liquid-cooled plate shell, and It is connected with the water inlet channel of the liquid cooling plate and the water outlet channel of the liquid cooling plate; in order to increase the heat exchange area, it is better to distribute convex ribs evenly along the fluid direction on the inner cavity wall of each vertical channel; the liquid cooling plate is made of heat conducting material;
在配装的汽车动力电池组的每一个电池单体两端面，分别紧密安装液冷板构成电池组温控传导组合体，液冷板与电池单体之间通过导热硅胶粘结；在组成电池组温控传导组合体的每一个液冷板的进水通道口上，通过进水支管与进水总管相连接，并且在每一个与进水总管相连接的进水支管上分别安装电控调速阀；在组成电池组温控传导组合体的每一个液冷板的出水通道口上，通过出水支管与出水总管相连接，并且在每一个与出水总管相连接的出水支管上分别安装热电偶；连接进水支管的进水总管与定压泵相连接，定压泵的另一端与冷却水箱相连接，冷却水箱的另一端与散热器相连接，散热器的另一端与连接出水支管的出水总管相连接；在与进水支管相连接的进水总管与定压泵相连接的管路的外管壁上缠绕加热线圈；电控调速阀、热电偶和加热线圈与汽车电子控制单元ECU相连组成温度控制回路；动力电池组通过控制开关与汽车电子控制单元ECU相连接。On the two ends of each battery cell of the assembled automotive power battery pack, a liquid cooling plate is tightly installed to form a battery pack temperature control conduction assembly, and the liquid cooling plate and the battery cell are bonded by thermal silica gel; when forming a battery The water inlet channel of each liquid cold plate of the group temperature control conduction assembly is connected to the water inlet main pipe through the water inlet branch pipe, and an electric control speed regulation is installed on each water inlet branch pipe connected to the water inlet main pipe. Valve; on the water outlet channel of each liquid cooling plate that forms the battery pack temperature control conduction assembly, connect with the water outlet main pipe through the water outlet branch pipe, and install thermocouples on each water outlet branch pipe connected with the water outlet main pipe; connect The main water inlet pipe of the water inlet branch pipe is connected to the constant pressure pump, the other end of the constant pressure pump is connected to the cooling water tank, the other end of the cooling water tank is connected to the radiator, and the other end of the radiator is connected to the water outlet main pipe connected to the water outlet branch pipe. Connection; the heating coil is wound on the outer pipe wall of the pipeline connected to the water inlet main pipe connected to the water inlet branch pipe and the constant pressure pump; the electric control speed control valve, thermocouple and heating coil are connected to the electronic control unit ECU of the car. Temperature control circuit; the power battery pack is connected with the automotive electronic control unit ECU through a control switch.
本发明的有益效果是：The beneficial effects of the present invention are:
1、利用液体介质和具有独立调节功能的主动散热的方式对电池组进行温度控制，提高了电池组的散热效果和散热均匀性；1. The temperature control of the battery pack is carried out by means of liquid medium and active heat dissipation with independent adjustment function, which improves the heat dissipation effect and uniformity of heat dissipation of the battery pack;
2、将在液冷板中均匀分布的竖直通道设计成矩形凸肋结构，增加了液固接触面积，提高了电池单体的散热效果和散热均匀性；2. The vertical channels evenly distributed in the liquid cooling plate are designed as a rectangular convex rib structure, which increases the liquid-solid contact area and improves the heat dissipation effect and uniformity of the battery cell;
3、通过加热线圈，使系统具有低温预热启动功能，优化了动力电池组的冷启动性能；3. By heating the coil, the system has a low-temperature preheating start function, which optimizes the cold start performance of the power battery pack;
4、通过将进水口和出水口布置在电池组的两端，并将液冷板进水口和出水口布置在液冷板两端，在各个电控调速阀阀口开关大小相同时，使各个进水支管中的流量相同，各个液冷板竖直通道中的流量也相同，提高了电池组和电池单体散热的均匀性和温度控制效果。4. By arranging the water inlet and outlet at both ends of the battery pack, and arranging the water inlet and outlet of the liquid-cooled plate at both ends of the liquid-cooled plate, when the valve ports of each electronically controlled speed control valve are of the same size, the The flow in each water inlet branch pipe is the same, and the flow in each vertical channel of the liquid cooling plate is also the same, which improves the heat dissipation uniformity and temperature control effect of the battery pack and battery cells.
四、附图说明4. Description of drawings
图1为本发明基于5个电池单体组合的温控传导组合体构成的温控装置的整体结构示意图的轴测图；Figure 1 is an axonometric view of the overall structural schematic diagram of a temperature control device based on a temperature control conductive assembly composed of five battery cells according to the present invention;
图2为本发明液冷板结构示意图的轴侧图；Fig. 2 is the axonometric view of the structural schematic diagram of the liquid cold plate of the present invention;
图3为本发明图2的A-O-A剖视图；Fig. 3 is the A-O-A sectional view of Fig. 2 of the present invention;
图4为本发明图3的B-B剖视图；Fig. 4 is the B-B sectional view of Fig. 3 of the present invention;
图5为本发明的控制电路系统简图；Fig. 5 is a schematic diagram of the control circuit system of the present invention;
图6为本发明基于4个电池单体组合的温控传导组合体构成的温控装置的整体结构示意图的轴测图。6 is an axonometric view of the overall structural schematic diagram of a temperature control device based on a temperature control conductive assembly composed of four battery cells according to the present invention.
附图标记reference sign
1、进水总管 2、进水支管 3、电控调速阀 3B、电控调速阀 3C、电控调速阀 3D、电控调速阀 3E、电控调速阀 3F、电控调速阀 4、液冷板 4B、液冷板 4C、液冷板 4D、液冷板4E、液冷板 4F、液冷板 4-1、液冷板进水通道 4-2、液冷板竖直通道 4-3、液冷板出水通道4-4、液冷板壳体 5、出水支管 6、热电偶 6B、热电偶 6C、热电偶 6D、热电偶 6E、热电偶6F、热电偶 7、出水总管 8、电池单体 8B、电池单体 8C、电池单体 8D、电池单体 8E、电池单体 9、散热器 10、冷却水箱 11、定压泵 12、加热线圈 13、电子控制单元ECU 14、控制开关1. Main water inlet pipe 2, water inlet branch pipe 3, electric control speed regulating valve 3B, electric control speed regulating valve 3C, electric control speed regulating valve 3D, electric control speed regulating valve 3E, electric control speed regulating valve 3F, electric control speed regulating valve Speed valve 4, liquid cooling plate 4B, liquid cooling plate 4C, liquid cooling plate 4D, liquid cooling plate 4E, liquid cooling plate 4F, liquid cooling plate 4-1, liquid cooling plate inlet channel 4-2, liquid cooling plate vertical Straight channel 4-3, liquid cooling plate water outlet channel 4-4, liquid cooling plate shell 5, water outlet branch pipe 6, thermocouple 6B, thermocouple 6C, thermocouple 6D, thermocouple 6E, thermocouple 6F, thermocouple 7, Outlet main pipe 8, battery cell 8B, battery cell 8C, battery cell 8D, battery cell 8E, battery cell 9, radiator 10, cooling water tank 11, constant pressure pump 12, heating coil 13, electronic control unit ECU 14. Control switch
五、具体实施方式5. Specific implementation
下面结合附图详细描述本发明的实施过程。The implementation process of the present invention will be described in detail below in conjunction with the accompanying drawings.
如图1、图2、图3、图4、图5所示，本发明与汽车动力电池组的电池单体8组合安装在汽车上，并与汽车的ECU 13相连接，其技术方案为由进水总管1、进水支管2、电控调速阀3、液冷板4、出水支管5、热电偶6、出水总管7、电池单体8、散热器9、冷却水箱10、定压泵11、加热线圈12、电子控制单元ECU 13、控制开关14组成；As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, the present invention is combined with the battery cell 8 of the automobile power battery pack and installed on the automobile, and is connected with the ECU 13 of the automobile, and its technical scheme is as follows: Water inlet main pipe 1, water inlet branch pipe 2, electronic control speed control valve 3, liquid cooling plate 4, water outlet branch pipe 5, thermocouple 6, water outlet main pipe 7, battery unit 8, radiator 9, cooling water tank 10, constant pressure pump 11. Composed of heating coil 12, electronic control unit ECU 13, and control switch 14;
所述的液冷板4由液冷板壳体4-4、液冷板进水通道4-1、液冷板竖直通道4-2和液冷板出水通道4-3构成，所有液冷板竖直通道4-2具有相同的尺寸，均匀分布在液冷板壳体4-4内，并与液冷板进水通道4-1和液冷板出水通道4-3相连接；为了增加换热面积，在每个液冷板竖直通道4-2内腔壁沿流体方向均匀分布凸肋，液冷板由导热材料制成；The liquid cold plate 4 is composed of a liquid cold plate shell 4-4, a liquid cold plate water inlet channel 4-1, a liquid cold plate vertical channel 4-2 and a liquid cold plate water outlet channel 4-3. The plate vertical channel 4-2 has the same size, is evenly distributed in the liquid-cooled plate housing 4-4, and is connected with the liquid-cooled plate water inlet channel 4-1 and the liquid-cooled plate water outlet channel 4-3; in order to increase The heat exchange area is that convex ribs are evenly distributed along the fluid direction on the inner cavity wall of each vertical channel 4-2 of the liquid cooling plate, and the liquid cooling plate is made of heat conducting material;
在配装的汽车动力电池组的每一个电池单体8两端面，分别紧密安装液冷板4构成电池组温控传导组合体，液冷板与电池单体之间通过导热硅胶粘结；在组成电池组温控传导组合体的每一个液冷板4的进水通道4-1口上，通过进水支管2与进水总管1相连接，并且在每一个与进水总管1相连接的进水支管2上安装电控调速阀3；在组成电池组温控传导组合体的每一个液冷板4的出水通道4-3口上，通过出水支管5与出水总管7相连接，并且在每一个与出水总管7相连接的出水支管5上安装热电偶6；连接进水支管2的进水总管1与定压泵11相连接，定压泵11的另一端与冷却水箱10相连接，冷却水箱10的另一端与散热器9相连接，散热器9的另一端与连接出水支管5的出水总管7相连接；在与进水支管2相连接的进水总管1与定压泵11相连接的管路的外管壁上缠绕加热线圈12；电控调速阀3、热电偶6和加热线圈12与汽车电子控制单元ECU 13相连组成温度控制回路，动力电池组通过控制开关14与汽车电子控制单元ECU 13相连接。On the two ends of each battery cell 8 of the assembled vehicle power battery pack, a liquid cooling plate 4 is tightly installed to form a battery pack temperature control conduction assembly, and the liquid cooling plate and the battery cell are bonded by heat-conducting silica gel; The water inlet channel 4-1 of each liquid cooling plate 4 that forms the battery pack temperature control conduction assembly is connected to the water inlet main pipe 1 through the water inlet branch pipe 2, and each inlet connected to the water inlet main pipe 1 An electronically controlled speed control valve 3 is installed on the water branch pipe 2; on the water outlet channel 4-3 of each liquid cold plate 4 that forms the battery pack temperature control conduction assembly, it is connected with the water outlet main pipe 7 through the water outlet branch pipe 5, and in each A thermocouple 6 is installed on the water outlet branch pipe 5 connected to the water outlet main pipe 7; the water inlet main pipe 1 connected to the water inlet branch pipe 2 is connected to the constant pressure pump 11, and the other end of the constant pressure pump 11 is connected to the cooling water tank 10, cooling The other end of the water tank 10 is connected to the radiator 9, and the other end of the radiator 9 is connected to the water outlet main pipe 7 connected to the water outlet branch pipe 5; the water inlet main pipe 1 connected to the water inlet branch pipe 2 is connected to the constant pressure pump 11 The heating coil 12 is wound on the outer pipe wall of the pipeline; the electronically controlled speed control valve 3, the thermocouple 6 and the heating coil 12 are connected with the automobile electronic control unit ECU 13 to form a temperature control loop, and the power battery pack is connected with the automobile electronic circuit through the control switch 14. The control unit ECU 13 is connected.
实施例一：Embodiment one:
如图1所示，本发明应用于有5个电池单体组成的电池组的汽车上，由进水总管1、进水支管2、电控调速阀3、液冷板4、出水支管5、热电偶6、出水总管7、电池单体8、散热器9、冷却水箱10、定压泵11、加热线圈12、电子控制单元ECU 13、控制开关14组成；As shown in Fig. 1, the present invention is applied on the automobile that has the battery pack that 5 battery cells are formed, by main water inlet pipe 1, water inlet branch pipe 2, electronically controlled governor valve 3, liquid cooling plate 4, water outlet branch pipe 5 , thermocouple 6, water outlet pipe 7, battery unit 8, radiator 9, cooling water tank 10, constant pressure pump 11, heating coil 12, electronic control unit ECU 13, control switch 14;
如图2、图3、图4所示，所述的液冷板4由液冷板壳体4-4、液冷板进水通道4-1、液冷板竖直通道4-2和液冷板出水通道4-3构成，5条液冷板竖直通道4-2具有相同的尺寸，均匀分布在液冷板壳体4-4内，并与液冷板进水通道4-1和液冷板出水通道4-3相连接；为了增加换热面积，在每个液冷板竖直通道4-2内腔壁沿流体方向均匀分布凸肋；液冷板由铝合金材料制成；As shown in Fig. 2, Fig. 3 and Fig. 4, the liquid cold plate 4 is composed of a liquid cold plate shell 4-4, a liquid cold plate water inlet channel 4-1, a liquid cold plate vertical channel 4-2 and a liquid cold plate The cold plate water outlet channel 4-3 is formed, and the five liquid cold plate vertical channels 4-2 have the same size, are evenly distributed in the liquid cold plate shell 4-4, and are connected with the liquid cold plate water inlet channel 4-1 and The water outlet channels 4-3 of the liquid cooling plate are connected; in order to increase the heat exchange area, convex ribs are evenly distributed along the fluid direction on the inner cavity wall of each vertical channel 4-2 of the liquid cooling plate; the liquid cooling plate is made of aluminum alloy;
在配装的由电池单体8、电池单体8B、电池单体8C、电池单体8D、电池单体8E组成的汽车动力电池组的每一个电池单体两端面，分别紧密安装液冷板4、液冷板4B、液冷板4C、液冷板4D、液冷板4E、液冷板4F，液冷板与电池单体之间通过导热硅胶粘结，构成对5个电池单体组成的电池组温控传导组合体。在组成电池组温控传导组合体的每一个液冷板的进水通道4-1口上，通过进水支管2与进水总管1相连接，并且在每一个与进水总管1相连接的进水支管2上分别安装电控调速阀3、电控调速阀3B、电控调速阀3C、电控调速阀3D、电控调速阀3E、电控调速阀3F；在组成电池组温控传导组合体的每一个液冷板4的出水通道4-3口上，通过出水支管5与出水总管7相连接，并且在每一个与出水总管7相连接的出水支管5上分别安装热电偶6、热电偶6B、热电偶6C、热电偶6D、热电偶6E、热电偶6F；连接进水支管2的进水总管1与定压泵11相连接，定压泵11的另一端与冷却水箱10相连接，冷却水箱10的另一端与散热器9相连接，散热器9的另一端与连接出水支管5的出水总管7相连接；在与进水支管2相连接的进水总管1与定压泵11相连接的管路的外管壁上缠绕加热线圈12；电控调速阀3、电控调速阀3B、电控调速阀3C、电控调速阀3D、电控调速阀3E、电控调速阀3F和热电偶6、热电偶6B、热电偶6C、热电偶6D、热电偶6E、热电偶6F以及加热线圈12与汽车电子控制单元ECU 13相连组成温度控制回路，动力电池组通过控制开关14与汽车电子控制单元ECU 13相连接。Install the liquid cooling plate tightly on both ends of each battery cell of the vehicle power battery pack composed of battery cell 8, battery cell 8B, battery cell 8C, battery cell 8D, and battery cell 8E. 4. Liquid-cooled plate 4B, liquid-cooled plate 4C, liquid-cooled plate 4D, liquid-cooled plate 4E, liquid-cooled plate 4F, the liquid-cooled plate and the battery cells are bonded by thermal silica gel, forming a pair of 5 battery cells The battery pack temperature control conduction assembly. On the water inlet channel 4-1 of each liquid cold plate that forms the battery pack temperature control conduction assembly, it is connected to the water inlet main pipe 1 through the water inlet branch pipe 2, and at each inlet connected to the water inlet main pipe 1 Electric control speed regulating valve 3, electric control speed regulating valve 3B, electric control speed regulating valve 3C, electric control speed regulating valve 3D, electric control speed regulating valve 3E, electric control speed regulating valve 3F are respectively installed on the water branch pipe 2; The water outlet channels 4-3 of each liquid cold plate 4 of the battery pack temperature control conduction assembly are connected to the water outlet main pipe 7 through the water outlet branch pipe 5, and are respectively installed on each outlet water branch pipe 5 connected to the water outlet main pipe 7 Thermocouple 6, thermocouple 6B, thermocouple 6C, thermocouple 6D, thermocouple 6E, thermocouple 6F; the main water inlet pipe 1 connected to the water inlet branch pipe 2 is connected to the constant pressure pump 11, and the other end of the constant pressure pump 11 is connected to the constant pressure pump 11. The cooling water tank 10 is connected, and the other end of the cooling water tank 10 is connected with the radiator 9, and the other end of the radiator 9 is connected with the water outlet main pipe 7 connected with the water outlet branch pipe 5; The heating coil 12 is wound on the outer pipe wall of the pipeline connected with the constant pressure pump 11; the electric control speed regulating valve 3, the electric control speed regulating valve 3B, the electric control speed regulating valve 3C, the electric control speed regulating valve 3D, the electric control speed regulating valve Speed regulating valve 3E, electric control speed regulating valve 3F, thermocouple 6, thermocouple 6B, thermocouple 6C, thermocouple 6D, thermocouple 6E, thermocouple 6F, and heating coil 12 are connected with automotive electronic control unit ECU 13 to form a temperature control In the circuit, the power battery pack is connected with the vehicle electronic control unit ECU 13 through the control switch 14 .
本发明应用于5个电池单体组成的汽车动力电池组温控装置的运行过程：The present invention is applied to the operation process of the temperature control device of the automobile power battery pack composed of 5 battery cells:
汽车启动：在低温状态下汽车启动时，启动控制开关14接通动力电池组电源，启动电子控制单元ECU 13控制加热线圈12通电对进水总管1管壁加热。同时启动定压泵11，将冷却液从冷却水箱10输送到进水总管1中加热，并通过各个进水支管2和电池组温控传导组合体的每一个液冷板4的进水通道口进入液冷板4、液冷板4B、液冷板4C、液冷板4D、液冷板4E、液冷板4F中对电池单体8、电池单体8B、电池单体8C、电池单体8D、电池单体8E加热。热电偶6、热电偶6B、热电偶6C、热电偶6D、热电偶6E、热电偶6F监测各个出水支管5中液体温度，得到相应的电池单体8、电池单体8B、电池单体8C、电池单体8D、电池单体8E的温度情况，当温度达到电池工作温度范围后，将信息反馈给电子控制单元ECU 13，控制相应的电控调速阀3或电控调速阀3B或电控调速阀3C或电控调速阀3D或电控调速阀3E或电控调速阀3F的阀门关闭，停止对相应的电池单体的加热，全部电池单体温度都达到工作温度范围后，电子控制单元ECU 13控制加热线圈12断电，汽车热启动完成。Car start: when the car is started at low temperature, the start control switch 14 connects the power supply of the power battery pack, and the start electronic control unit ECU 13 controls the heating coil 12 to energize the water inlet main pipe 1 to heat the pipe wall. At the same time, start the constant pressure pump 11 to transport the coolant from the cooling water tank 10 to the water inlet main pipe 1 for heating, and pass through each water inlet branch pipe 2 and the water inlet channel port of each liquid cooling plate 4 of the battery pack temperature control conduction assembly Enter the liquid cold plate 4, liquid cold plate 4B, liquid cold plate 4C, liquid cold plate 4D, liquid cold plate 4E, liquid cold plate 4F to battery cell 8, battery cell 8B, battery cell 8C, battery cell 8D, the battery cell 8E is heated. Thermocouple 6, thermocouple 6B, thermocouple 6C, thermocouple 6D, thermocouple 6E, and thermocouple 6F monitor the liquid temperature in each water outlet branch pipe 5, and obtain corresponding battery cells 8, battery cells 8B, battery cells 8C, When the temperature of the battery cell 8D and the battery cell 8E reaches the battery operating temperature range, the information is fed back to the electronic control unit ECU 13 to control the corresponding electronically controlled speed regulating valve 3 or electronically controlled speed regulating valve 3B or electric control valve 3B. The valve of control speed control valve 3C or electric control speed control valve 3D or electric control speed control valve 3E or electric control speed control valve 3F is closed, and the heating of the corresponding battery cells is stopped, and the temperature of all battery cells reaches the working temperature range Finally, the electronic control unit ECU 13 controls the heating coil 12 to be powered off, and the hot start of the vehicle is completed.
汽车运行过程中本发明对电池单体的冷却温控过程：在汽车运行过程中，定压泵11将冷却液从冷却水箱10输送到进水总管1中，通过各个进水支管2和电池组温控传导组合体的每一个液冷板4的进水通道口进入液冷板4、4B、4C、4D、4E、4F中。由于电池单体持续供电，电池单体发热温度上升，在温差作用下，通过热传导方式将热量集中到液冷板4、4B、4C、4D、4E、4F上，冷却液在液冷板内的通道流动，热量传给冷却液，通过热对流方式冷却液将热量沿出水支管5带出，再通过出水总管7进入散热器9冷却后，回到冷却水箱10中，冷却液在冷却水箱10中储存，再经过定压泵11输送到进水总管1，通过各个进水支管2和电池组温控传导组合体的每一个液冷板4的进水通道口进入各个液冷板4、4B、4C、4D、4E、4F中，形成循环冷却。热电偶6、6B、6C、6D、6E、6F监测各个出水支管5中液体温度，当温度有波动时，将信息反馈到电子控制单元ECU 13，电子控制单元ECU 13通过控制安装在相应的进水支管2上的电控调速阀3或3B或3C或3D或3E或3F的阀门来控制阀门开关大小，从而控制进入液冷板4或4B或4C或4D或4E或4F中冷却液的流量，来调整电池组的各个电池单体间的温度，使各个电池单体温度一直维持在最佳工作温度状态，整个电池组温度分布均匀性也得到改善。The cooling and temperature control process of the battery cells in the present invention during the operation of the automobile: during the operation of the automobile, the constant pressure pump 11 transports the cooling liquid from the cooling water tank 10 to the water inlet main pipe 1, and passes through each water inlet branch pipe 2 and the battery pack. The water inlet channel of each liquid cooling plate 4 of the temperature control conduction assembly enters into the liquid cooling plates 4, 4B, 4C, 4D, 4E, 4F. Due to the continuous power supply of the battery cell, the heating temperature of the battery cell rises. Under the action of the temperature difference, the heat is concentrated on the liquid cooling plates 4, 4B, 4C, 4D, 4E, and 4F through heat conduction. The cooling liquid in the liquid cooling plate The channel flows, the heat is transferred to the cooling liquid, and the cooling liquid takes the heat out along the water outlet branch pipe 5 through the heat convection method, and then enters the radiator 9 through the water outlet main pipe 7 to cool, and then returns to the cooling water tank 10, and the cooling liquid is in the cooling water tank 10 Stored, and then transported to the water inlet main pipe 1 through the constant pressure pump 11, and enter each liquid cold plate 4, 4B, In 4C, 4D, 4E, and 4F, circulating cooling is formed. Thermocouples 6, 6B, 6C, 6D, 6E, and 6F monitor the temperature of the liquid in each outlet branch pipe 5, and when the temperature fluctuates, the information is fed back to the electronic control unit ECU 13, and the electronic control unit ECU 13 is installed in the corresponding inlet by controlling. The electronic control speed regulating valve 3 or 3B or 3C or 3D or 3E or 3F valve on the water branch pipe 2 controls the size of the valve switch, thereby controlling the flow of coolant entering the liquid cold plate 4 or 4B or 4C or 4D or 4E or 4F The flow rate is used to adjust the temperature between each battery cell in the battery pack, so that the temperature of each battery cell is always maintained at the optimal working temperature state, and the uniformity of temperature distribution in the entire battery pack is also improved.
实施例二：Embodiment two:
如图6所示，本发明应用于有4个电池单体组成的电池组的汽车上，由进水总管1、进水支管2、电控调速阀3、液冷板4、出水支管5、热电偶6、出水总管7、电池单体8、散热器9、冷却水箱10、定压泵11、加热线圈12、电子控制单元ECU 13、控制开关14组成；As shown in Figure 6, the present invention is applied to a car with a battery pack composed of 4 battery cells. , thermocouple 6, water outlet pipe 7, battery unit 8, radiator 9, cooling water tank 10, constant pressure pump 11, heating coil 12, electronic control unit ECU 13, control switch 14;
如图2、图3、图4所示，所述的液冷板4由液冷板壳体4-4、液冷板进水通道4-1、液冷板竖直通道4-2和液冷板出水通道4-3构成，5条液冷板竖直通道4-2具有相同的尺寸，均匀分布在液冷板壳体4-4内，并与液冷板进水通道4-1和液冷板出水通道4-3相连接；为了增加换热面积，在每个液冷板竖直通道4-2内腔壁沿流体方向均匀分布凸肋；液冷板由铝合金材料制成；As shown in Fig. 2, Fig. 3 and Fig. 4, the liquid cold plate 4 is composed of a liquid cold plate shell 4-4, a liquid cold plate water inlet channel 4-1, a liquid cold plate vertical channel 4-2 and a liquid cold plate The cold plate water outlet channel 4-3 is formed, and the five liquid cold plate vertical channels 4-2 have the same size, are evenly distributed in the liquid cold plate shell 4-4, and are connected with the liquid cold plate water inlet channel 4-1 and The water outlet channels 4-3 of the liquid cooling plate are connected; in order to increase the heat exchange area, convex ribs are evenly distributed along the fluid direction on the inner cavity wall of each vertical channel 4-2 of the liquid cooling plate; the liquid cooling plate is made of aluminum alloy;
在配装的由电池单体8、电池单体8B、电池单体8C、电池单体8D组成的汽车动力电池组的每一个电池单体两端面，分别紧密安装液冷板4、液冷板4B、液冷板4C、液冷板4D、液冷板4E，液冷板与电池单体之间通过导热硅胶粘结，构成对4个电池单体组成的电池组温控传导组合体。在组成电池组温控传导组合体的每一个液冷板的进水通道4-1口上，通过进水支管2与进水总管1相连接，并且在每一个与进水总管1相连接的进水支管2上分别安装电控调速阀3、3B、3C、3D、3E；在组成电池组温控传导组合体的每一个液冷板4的出水通道4-3口上，通过出水支管5与出水总管7相连接，并且在每一个与出水总管7相连接的出水支管5上分别安装热电偶6、6B、6C、6D、6E；连接进水支管2的进水总管1与定压泵11相连接，定压泵11的另一端与冷却水箱10相连接，冷却水箱10的另一端与散热器9相连接，散热器9的另一端与连接出水支管5的出水总管7相连接；在与进水支管2相连接的进水总管1与定压泵11相连接的管路的外管壁上缠绕加热线圈12；电控调速阀3、3B、3C、3D、3E和热电偶6、6B、6C、6D、6E以及加热线圈12与汽车电子控制单元ECU 13相连组成温度控制回路，动力电池组通过控制开关14与汽车电子控制单元ECU 13相连接。On both ends of each battery cell of the assembled vehicle power battery pack composed of battery cells 8, battery cells 8B, battery cells 8C, and battery cells 8D, the liquid cooling plate 4 and the liquid cooling plate are respectively tightly installed. 4B, liquid cooling plate 4C, liquid cooling plate 4D, liquid cooling plate 4E, the liquid cooling plate and the battery cells are bonded by heat-conducting silica gel to form a battery pack temperature control conduction assembly composed of 4 battery cells. On the water inlet channel 4-1 of each liquid cold plate that forms the battery pack temperature control conduction assembly, it is connected to the water inlet main pipe 1 through the water inlet branch pipe 2, and at each inlet connected to the water inlet main pipe 1 Electric control speed control valves 3, 3B, 3C, 3D, and 3E are respectively installed on the water branch pipe 2; on the water outlet channel 4-3 of each liquid cold plate 4 that forms the battery pack temperature control conduction assembly, through the water outlet branch pipe 5 and The water outlet pipes 7 are connected, and thermocouples 6, 6B, 6C, 6D, 6E are respectively installed on each outlet branch pipe 5 connected to the water outlet pipe 7; the water inlet pipe 1 connected to the water inlet branch pipe 2 and the constant pressure pump 11 The other end of the constant pressure pump 11 is connected with the cooling water tank 10, the other end of the cooling water tank 10 is connected with the radiator 9, and the other end of the radiator 9 is connected with the water outlet main pipe 7 connecting the water outlet branch pipe 5; A heating coil 12 is wound on the outer pipe wall of the pipeline connecting the water inlet main pipe 1 connected with the water inlet branch pipe 2 and the constant pressure pump 11; the electric control speed regulating valve 3, 3B, 3C, 3D, 3E and the thermocouple 6, 6B, 6C, 6D, 6E and the heating coil 12 are connected with the vehicle electronic control unit ECU 13 to form a temperature control circuit, and the power battery pack is connected with the vehicle electronic control unit ECU 13 through the control switch 14 .
本发明应用于4个电池单体组成的汽车动力电池组温控装置的运行过程：The present invention is applied to the operation process of the temperature control device of the automobile power battery pack composed of 4 battery cells:
汽车启动：在低温状态下汽车启动时，启动控制开关14接通动力电池组电源，启动电子控制单元ECU 13控制加热线圈12通电对进水总管1管壁加热。同时启动定压泵11，将冷却液从冷却水箱10输送到进水总管1中加热，并通过各个进水支管2和电池组温控传导组合体的每一个液冷板4的进水通道口进入液冷板4、液冷板4B、液冷板4C、液冷板4D、液冷板4E中对电池单体8、电池单体8B、电池单体8C、电池单体8D加热。热电偶6、热电偶6B、热电偶6C、热电偶6D、热电偶6E监测各个出水支管5中液体温度，得到相应的电池单体8、电池单体8B、电池单体8C、电池单体8D的温度情况，当温度达到电池工作温度范围后，将信息反馈给电子控制单元ECU 13，控制相应的电控调速阀3或电控调速阀3B或电控调速阀3C或电控调速阀3D或电控调速阀3E的阀门关闭，停止对相应的电池单体的加热，全部电池单体温度都达到工作温度范围后，电子控制单元ECU 13控制加热线圈12断电，汽车热启动完成。Car start: when the car is started at low temperature, the start control switch 14 connects the power supply of the power battery pack, and the start electronic control unit ECU 13 controls the heating coil 12 to energize the water inlet main pipe 1 to heat the pipe wall. At the same time, start the constant pressure pump 11 to transport the coolant from the cooling water tank 10 to the water inlet main pipe 1 for heating, and pass through each water inlet branch pipe 2 and the water inlet channel port of each liquid cooling plate 4 of the battery pack temperature control conduction assembly Enter the liquid cooling plate 4, the liquid cooling plate 4B, the liquid cooling plate 4C, the liquid cooling plate 4D, and the liquid cooling plate 4E to heat the battery cell 8, the battery cell 8B, the battery cell 8C, and the battery cell 8D. Thermocouple 6, thermocouple 6B, thermocouple 6C, thermocouple 6D, and thermocouple 6E monitor the temperature of the liquid in each outlet pipe 5, and obtain the corresponding battery cells 8, battery cells 8B, battery cells 8C, and battery cells 8D When the temperature reaches the working temperature range of the battery, the information is fed back to the electronic control unit ECU 13 to control the corresponding electronically controlled speed regulating valve 3 or electronically controlled speed regulating valve 3B or electronically controlled speed regulating valve 3C or electronically controlled speed regulating valve The valve of the speed valve 3D or the electronic control speed control valve 3E is closed, and the heating of the corresponding battery cells is stopped. After the temperature of all the battery cells reaches the working temperature range, the electronic control unit ECU 13 controls the heating coil 12 to cut off the power, and the car heats up. Startup complete.
汽车运行过程中本发明对电池单体的冷却温控过程：在汽车运行过程中，定压泵11将冷却液从冷却水箱10输送到进水总管1中，通过各个进水支管2和电池组温控传导组合体的每一个液冷板4的进水通道口进入液冷板4、4B、4C、4D、4E中。由于电池单体持续供电，电池单体发热温度上升，在温差作用下，通过热传导方式将热量集中到液冷板4、4B、4C、4D、4E上，冷却液在液冷板内的通道流动，热量传给冷却液，通过热对流方式冷却液将热量沿出水支管5带出，再通过出水总管7进入散热器9冷却后，回到冷却水箱10中，冷却液在冷却水箱10中储存，再经过定压泵11输送到进水总管1，通过各个进水支管2和电池组温控传导组合体的每一个液冷板4的进水通道口进入各个液冷板4、4B、4C、4D、4E中，形成循环冷却。热电偶6、6B、6C、6D、6E监测各个出水支管5中液体温度，当温度有波动时，将信息反馈到电子控制单元ECU 13，电子控制单元ECU 13通过控制安装在相应的进水支管2上的电控调速阀3或3B或3C或3D或3E的阀门来控制阀门开关大小，从而控制进入液冷板4或4B或4C或4D或4E中冷却液的流量，来调整电池组的各个电池单体间的温度，使各个电池单体温度一直维持在最佳工作温度状态，整个电池组温度分布均匀性也得到改善。The cooling and temperature control process of the battery cells in the present invention during the operation of the automobile: during the operation of the automobile, the constant pressure pump 11 transports the cooling liquid from the cooling water tank 10 to the water inlet main pipe 1, and passes through each water inlet branch pipe 2 and the battery pack. The water inlet channel of each liquid cooling plate 4 of the temperature control conduction assembly enters into the liquid cooling plates 4, 4B, 4C, 4D, 4E. Due to the continuous power supply of the battery cells, the heating temperature of the battery cells rises. Under the action of temperature difference, the heat is concentrated on the liquid cooling plates 4, 4B, 4C, 4D, and 4E through heat conduction, and the cooling liquid flows in the channels of the liquid cooling plates. , the heat is transferred to the cooling liquid, and the cooling liquid takes the heat out along the water outlet branch pipe 5 through the heat convection method, and then enters the radiator 9 through the water outlet main pipe 7 to cool, and then returns to the cooling water tank 10, where the cooling liquid is stored. Then it is transported to the water inlet main pipe 1 through the constant pressure pump 11, and enters each liquid cold plate 4, 4B, 4C, In 4D and 4E, circulating cooling is formed. Thermocouples 6, 6B, 6C, 6D, and 6E monitor the temperature of the liquid in each water outlet branch pipe 5, and when the temperature fluctuates, the information is fed back to the electronic control unit ECU 13, and the electronic control unit ECU 13 is installed in the corresponding water inlet branch pipe through control. The electronically controlled speed control valve 3 or 3B or 3C or 3D or 3E valve on 2 controls the size of the valve switch, thereby controlling the flow of coolant entering the liquid cooling plate 4 or 4B or 4C or 4D or 4E to adjust the battery pack The temperature between each battery cell keeps the temperature of each battery cell at the optimal working temperature state, and the uniformity of temperature distribution of the entire battery pack is also improved.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711432371.7ACN107946696A (en) | 2017-12-26 | 2017-12-26 | A kind of automobile power cell group temperature control device based on liquid medium |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711432371.7ACN107946696A (en) | 2017-12-26 | 2017-12-26 | A kind of automobile power cell group temperature control device based on liquid medium |
| Publication Number | Publication Date |
|---|---|
| CN107946696Atrue CN107946696A (en) | 2018-04-20 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711432371.7APendingCN107946696A (en) | 2017-12-26 | 2017-12-26 | A kind of automobile power cell group temperature control device based on liquid medium |
| Country | Link |
|---|---|
| CN (1) | CN107946696A (en) |
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