CN111746352B - Method and device for determining battery of power hybrid electric vehicle and upper computer - Google Patents
Method and device for determining battery of power hybrid electric vehicle and upper computerDownload PDFInfo
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- CN111746352B CN111746352BCN201910252205.1ACN201910252205ACN111746352BCN 111746352 BCN111746352 BCN 111746352BCN 201910252205 ACN201910252205 ACN 201910252205ACN 111746352 BCN111746352 BCN 111746352B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2260/00—Operating Modes
- B60L2260/40—Control modes
- B60L2260/50—Control modes by future state prediction
- B60L2260/52—Control modes by future state prediction drive range estimation, e.g. of estimation of available travel distance
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
- H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
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Abstract
Description
Technical Field
The invention relates to the field of vehicle development, in particular to a method and a device for determining a battery of a power hybrid electric vehicle and an upper computer.
Background
There are three main configurations of current hydrogen fuel cell vehicles: a fuel cell direct drive type, a power hybrid type, and an energy hybrid type electric vehicle includes: the power battery is light in weight and weight, lower in cost than a fuel battery directly driven type power battery, and capable of recycling braking energy, so that the conventional vehicle enterprises are mostly produced by adopting the electric vehicle with the structure. When the driving range of the electric vehicle with the configuration is related to the capacity of the fuel bottle of the hydrogen fuel cell, the full charge pressure and the like besides the power cell, how to determine whether the selected power cell and the hydrogen fuel cell are matched with the preset driving range is a problem to be solved.
Disclosure of Invention
The embodiment of the invention aims to provide a method, a device and an upper computer for determining a battery of a power hybrid electric vehicle, which are used for solving the problem of determining whether a selected power battery and a gas fuel cell are matched with a preset driving range.
In order to solve the technical problem, an embodiment of the present invention provides a method for determining a battery of a power hybrid electric vehicle, including:
receiving the input fuel bottle volume of the gas fuel battery, the full charge pressure of the fuel bottle, and the power supply voltage and the battery capacity of the power battery;
obtaining first supply electric energy output by the gas fuel cell to the driving motor according to the volume and the full-charging pressure of the fuel bottle, and obtaining second supply electric energy output by the power battery to the driving motor according to the power supply voltage and the battery capacity;
obtaining a target driving range of the vehicle according to the first supply electric energy, the second supply electric energy and the unit energy consumption of the vehicle obtained in advance;
and if the target driving range meets the requirement of the preset driving range, determining that the gas fuel cell is the target gas fuel cell required by the vehicle, and determining that the power cell is the target power cell required by the vehicle.
Preferably, the method as described above, wherein the step of obtaining the first supply electric energy output from the gas fuel cell to the driving motor according to the volume and the full charge pressure of the fuel bottle comprises:
obtaining a first mass of the gas fuel in unit volume at a preset temperature according to a preset gas state equation and full-charge pressure;
obtaining a second mass of the gas fuel in unit volume at a preset temperature according to a preset gas state equation and a preset limiting pressure;
obtaining the unit available mass of the gas fuel in unit volume at the preset temperature according to the first mass and the second mass;
obtaining the available mass of the gas fuel according to the volume of the fuel bottle and the unit available mass;
and obtaining first supply electric energy according to the available mass of the gas fuel and a preset energy equation.
Specifically, as described above, in the preset energy equation, the first supply electric energy is a product of available mass of the gas fuel, a heating value of the gas fuel, stack efficiency of the gas fuel cell, system efficiency of the gas fuel cell, first conversion efficiency of a first voltage converter connected to the gas fuel cell, and a current service life degradation coefficient of the gas fuel cell. Specifically, the method for obtaining the second supply electric energy output by the power battery to the driving motor according to the supply voltage and the battery capacity comprises the following steps:
obtaining the output electric energy of the power battery according to the product of the power supply voltage, the battery capacity and the discharge coefficient of the power battery;
and obtaining second supply electric energy according to the product of the output electric energy and second conversion efficiency of a second voltage converter connected with the power battery.
Further, the method as described above, wherein the step of obtaining the target driving range of the vehicle based on the first supplied electric energy, the second supplied electric energy, and the unit energy consumption of the vehicle obtained in advance includes:
and substituting the first supply electric energy, the second supply electric energy and the unit energy consumption into a preset driving range equation to obtain the target driving range, wherein in the preset driving range equation, the target driving range is the sum of the ratios of the first supply electric energy and the second supply electric energy to the unit energy consumption respectively.
Another preferred embodiment of the present invention also provides an apparatus for determining a battery of a power hybrid electric vehicle, including:
the receiving module is used for receiving the input fuel bottle volume of the gas fuel battery, the full-charge pressure of the fuel bottle, and the power supply voltage and the battery capacity of the power battery;
the first processing module is used for obtaining first supply electric energy output by the gas fuel battery to the driving motor according to the volume of the fuel bottle and the full-charging pressure, and obtaining second supply electric energy output by the power battery to the driving motor according to the power supply voltage and the battery capacity;
the second processing module is used for obtaining the target driving range of the vehicle according to the first supply electric energy, the second supply electric energy and the unit energy consumption of the vehicle obtained in advance;
and the third processing module is used for determining that the gas fuel cell is the target gas fuel cell required by the vehicle and the power cell is the target power cell required by the vehicle if the target driving range meets the requirement of the preset driving range.
Preferably, the apparatus as described above, the first processing module comprises:
the first processing unit is used for obtaining the first mass of the gas fuel in unit volume at the preset temperature according to a preset gas state equation and full-charge pressure;
the second processing unit is used for obtaining a second mass of the gas fuel in unit volume at the preset temperature according to a preset gas state equation and preset limiting pressure;
the third processing unit is used for obtaining the unit available mass of the gas fuel in unit volume at the preset temperature according to the first mass and the second mass;
the fourth processing unit is used for obtaining the available mass of the gas fuel according to the volume of the fuel bottle and the unit available mass;
and the fifth processing unit is used for obtaining the first supply electric energy according to the available mass of the gas fuel and a preset energy equation.
Specifically, the apparatus as described above, the second processing module includes:
the sixth processing unit is used for obtaining the output electric energy of the power battery according to the product of the power supply voltage, the battery capacity and the discharge coefficient of the power battery;
and the seventh processing unit is used for obtaining second supply electric energy according to the product of the output electric energy and the second conversion efficiency of a second voltage converter connected with the power battery.
Still another preferred embodiment of the present invention provides an upper computer, including: the device for determining the battery of the power hybrid electric vehicle is determined as described above.
Compared with the prior art, the method, the device and the upper computer for determining the battery of the power hybrid electric vehicle provided by the embodiment of the invention at least have the following beneficial effects:
in an embodiment of the present invention, the determining the basic parameters of the selected gas fuel cell includes: the fuel bottle volume, the full charge pressure of the fuel bottle, and the basic parameters of the power battery include: the method comprises the steps of supplying power voltage and battery capacity, obtaining first supply electric energy which can be output to a motor by a gas fuel battery according to basic parameters of the gas fuel battery, obtaining second supply kinetic energy of the power battery according to the basic parameters of the power battery, further obtaining a target driving range when the vehicle adopts the gas fuel battery and the power battery through the first supply electric energy, the second supply electric energy and unit energy consumption of the vehicle, and determining the gas fuel battery to be the target gas fuel battery required by the vehicle and the power battery to be the target power battery required by the vehicle if the target driving range meets a preset driving range. Therefore, whether the requirement of the vehicle on the driving range is met can be determined only through basic parameters of the gas fuel cell and the power cell in the vehicle development process, and the cost generated when the actual vehicle test determination is carried out on each combination of the gas fuel cell and the power cell is avoided.
Drawings
FIG. 1 is a schematic flow chart of a method provided by the present invention;
FIG. 2 is a second schematic flow chart of the method of the present invention;
FIG. 3 is a third schematic flow chart of the method of the present invention;
fig. 4 is a schematic structural diagram of the apparatus provided in the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided only to help the full understanding of the embodiments of the present invention. Thus, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
In various embodiments of the present invention, it should be understood that the sequence numbers of the following processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
In the embodiments provided herein, it should be understood that "B corresponding to a" means that B is associated with a from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may be determined from a and/or other information.
Referring to fig. 1, a preferred embodiment of the present invention provides a method of determining a battery of a power hybrid electric vehicle, including:
step S101, receiving input fuel bottle volume of the gas fuel battery, full charge pressure of the fuel bottle, and power supply voltage and battery capacity of the power battery;
step S102, obtaining first supply electric energy output by a gas fuel cell to a driving motor according to the volume and the full-charging pressure of a fuel bottle, and obtaining second supply electric energy output by a power battery to the driving motor according to the power supply voltage and the battery capacity;
step S103, obtaining a target driving range of the vehicle according to the first supply electric energy, the second supply electric energy and the unit energy consumption of the vehicle obtained in advance;
and step S104, if the target driving range meets the requirement of the preset driving range, determining that the gas fuel cell is the target gas fuel cell required by the vehicle, and determining that the power cell is the target power cell required by the vehicle.
In an embodiment of the present invention, the determining the basic parameters of the selected gas fuel cell includes: the fuel bottle volume, the full charge pressure of the fuel bottle, and the basic parameters of the power battery include: the method comprises the steps of supplying power voltage and battery capacity, obtaining first supply electric energy which can be output to a motor by a gas fuel battery according to basic parameters of the gas fuel battery, obtaining second supply kinetic energy of the power battery according to the basic parameters of the power battery, obtaining a target driving range when the vehicle adopts the gas fuel battery and the power battery through the first supply electric energy, the second supply electric energy and unit energy consumption of the vehicle, determining the gas fuel battery to be the target gas fuel battery required by the vehicle if the target driving range meets a preset driving range, determining the power battery to be the target power battery required by the vehicle if the target driving range does not meet the preset driving range, outputting unmatched prompt information and prompting technicians to replace the combined scheme of the gas fuel battery and the power battery. Therefore, whether the requirement of the vehicle on the driving range is met can be determined only through basic parameters of the gas fuel cell and the power cell in the vehicle development process, and the cost generated when the actual vehicle test determination is carried out on each combination of the gas fuel cell and the power cell is avoided. While the gas fuel cell is preferably a hydrogen fuel cell in the embodiment of the present invention, those skilled in the art can obtain other parameters related to the first supply power of the gas fuel cell when other types of gas fuel cells are used according to actual requirements, and the invention also falls into the protection scope of the present invention. Wherein the fuel bottle volume according to the present invention is a total volume of at least one fuel bottle to be mounted on a vehicle.
Referring to fig. 2, preferably, the step of obtaining the first supply power of the gas fuel cell to the driving motor according to the fuel bottle volume and the full charge pressure as described above includes:
step S201, obtaining a first mass of the gas fuel in unit volume at a preset temperature according to a preset gas state equation and full-charge pressure;
step S202, obtaining a second mass of the gas fuel in unit volume at a preset temperature according to a preset gas state equation and a preset limiting pressure;
step S203, obtaining the unit available mass of the gas fuel in unit volume at the preset temperature according to the first mass and the second mass;
step S204, obtaining the available mass of the gas fuel according to the volume of the fuel bottle and the unit available mass;
in step S205, a first supply electric energy is obtained according to the available mass of the gaseous fuel and a preset energy equation.
In the embodiment of the invention, in the step of obtaining the first supply electric energy output by the gas fuel cell to the driving motor according to the volume and the full charge pressure of the fuel bottle, the available mass of the gas fuel per unit volume of the fuel bottle at the preset temperature is obtained according to the preset gas state equation, the full charge pressure when the fuel bottle is fully charged and the limit pressure when the fuel bottle cannot supply the gas fuel, the total available mass of the gas fuel in the fuel bottle is obtained according to the volume of the fuel bottle, and the first supply electric energy which can be supplied by the gas fuel cell is obtained according to the preset energy equation. The method can obtain the first supply electric energy of the gas fuel cell according to the basic parameters of the gas fuel cell, provide a data base for obtaining the driving range of the vehicle when the gas fuel cell is matched with the power cell according to the first supply electric energy and the second supply electric energy, and is convenient to judge whether the matching of the gas fuel cell and the power cell meets the requirement on the driving range of the vehicle. In the embodiment of the invention, the preset temperature is normal temperature, and when the power hybrid electric vehicle needs to work under other temperature conditions, the actual temperature value of the preset temperature is determined according to the actual working conditions, which also belongs to the protection scope of the invention. Wherein the limiting pressure is the pressure in the fuel bottle when the gas fuel is present in the fuel bottle but the remaining gas fuel is insufficient to cause the gas fuel cell to generate electricity.
Specifically, the method as described above, wherein the preset gas state equation is:
wherein P is a full charge pressure or a limiting pressure;
m is a first mass corresponding to a full charge pressure or a second mass corresponding to a limiting pressure;
m is the molar mass of the gaseous fuel;
V0is the molar volume of the gaseous fuel;
r is the gas constant of the gas fuel;
t is a preset temperature;
a. b are respectively a preset coefficient.
In the embodiment of the present invention, the preset gas state equation is shown in the above formula, wherein the molar mass of the gas fuel, the molar volume of the gas fuel, the gas constant of the gas fuel, and the preset temperature are all constants preset by a technician in advance, so that the first mass of the gas fuel in unit volume at the preset temperature can be obtained according to the preset gas state equation only by knowing the full charge pressure of the gas fuel in the fuel bottle, which is convenient for subsequent data processing. Meanwhile, the limiting pressure of the gas fuel in the fuel bottle is a constant determined according to the basic parameters of the fuel bottle, so that the limiting pressure can also be set in a preset mode.
Specifically, as described above, in the preset energy equation, the first supply electric energy is a product of available mass of the gas fuel, a heating value of the gas fuel, stack efficiency of the gas fuel cell, system efficiency of the gas fuel cell, first conversion efficiency of a first voltage converter connected to the gas fuel cell, and a current service life degradation coefficient of the gas fuel cell. In the embodiment of the invention, when the first supply electric energy is obtained according to the preset energy equation, the heat energy generated by the combustion of the gas fuel with the available mass of the gas fuel in the fuel bottle under the condition of no loss is obtained according to the product of the available mass of the gas fuel and the heat value of the gas fuel, the actual electric energy obtained after the combustion of the gas fuel in the fuel bottle can be obtained according to the first heat energy and the stack efficiency, the system efficiency and the service life decline coefficient of the gas fuel cell, and the first supply electric energy output to the motor by the gas fuel cell can be obtained according to the actual electric energy and the first conversion efficiency of a first voltage converter connected with the gas fuel cell and the motor. The service life decline coefficient is determined according to the number of times of using the hydrogen fuel cell, wherein if the number of times of using the gas fuel cell is less than a preset value, the service life decline coefficient can be determined to be 1.
Referring to fig. 3, in particular, the step of obtaining the second supply electric energy output by the power battery to the driving motor according to the supply voltage and the battery capacity, as described above, includes:
step S301, obtaining output electric energy of the power battery according to the product of the power supply voltage, the battery capacity and the discharge coefficient of the power battery;
step S302, a second supply electric energy is obtained according to a product of the output electric energy and a second conversion efficiency of a second voltage converter connected to the power battery.
In the embodiment of the invention, when the second supply electric energy is obtained according to the supply voltage and the battery capacity of the power battery, the product of the second supply electric energy and the discharge coefficient of the power battery and the second conversion efficiency of the second voltage converter is required, the situations that the power battery cannot be completely discharged during discharging and the second voltage converter connecting the power battery and the motor has energy loss are considered, and the accuracy of the obtained second supply voltage is favorably ensured. In the embodiment of the present invention, the first voltage converter and the second voltage converter are only for convenience of description, and it is not necessarily said that both are not the same device.
Further, the method as described above, wherein the step of obtaining the target driving range of the vehicle based on the first supplied electric energy, the second supplied electric energy, and the unit energy consumption of the vehicle obtained in advance includes:
and substituting the first supply electric energy, the second supply electric energy and the unit energy consumption into a preset driving range equation to obtain the target driving range, wherein in the preset driving range equation, the target driving range is the sum of the ratios of the first supply electric energy and the second supply electric energy to the unit energy consumption respectively.
In the embodiment of the invention, the driving range which can be provided by the gas fuel cell when the gas fuel cell is singly powered is obtained according to the ratio of the first supply electric energy to the unit energy consumption of the vehicle, the driving range which can be provided by the power cell when the power cell is singly powered is obtained according to the ratio of the second supply electric energy to the unit energy consumption of the vehicle, and the target driving range is obtained according to the sum of the two driving ranges. In the embodiment of the present invention, the unit energy consumption refers to the consumed electric energy per kilometer, and optionally, a person skilled in the art may determine the unit energy consumption according to actual determination, for example: when the energy consumption of the vehicle in hundred kilometers is taken as unit energy consumption for processing, the driving range equation is correspondingly modified, which also belongs to the protection scope of the invention. Preferably, in the embodiment of the present invention, the second power supply energy is the electric energy output to the motor through the second voltage converter, and if a person skilled in the art acquires the electric energy of the power battery in other links, and obtains the driving range of the power battery when the power battery is independently powered by using other similar formulas, the driving range formula formed by the driving range formula also belongs to the protection scope of the present invention.
Referring to fig. 4, another preferred embodiment of the present invention also provides an apparatus for determining a battery of a power hybrid electric vehicle, including:
the receivingmodule 401 is configured to receive an input fuel bottle volume of the gas fuel cell, a full-charge pressure of the fuel bottle, and a power supply voltage and a battery capacity of the power battery;
thefirst processing module 402 is configured to obtain a first supply power output by the gas fuel cell to the driving motor according to the volume of the fuel bottle and the full-charge pressure, and obtain a second supply power output by the power battery to the driving motor according to the supply voltage and the battery capacity;
asecond processing module 403, configured to obtain a target driving range of the vehicle according to the first supplied electric energy, the second supplied electric energy, and a unit energy consumption of the vehicle obtained in advance;
and athird processing module 404, configured to determine that the gas fuel cell is a target gas fuel cell required by the vehicle and the power battery is a target power battery required by the vehicle if the target driving range meets the requirement of the preset driving range.
Preferably, as the apparatus described above, thefirst processing module 402 comprises:
thefirst processing unit 4021 is configured to obtain a first mass of the gas fuel at a preset temperature in a unit volume according to a preset gas state equation and a full charge pressure;
thesecond processing unit 4022 is configured to obtain a second mass of the gaseous fuel at a preset temperature per unit volume according to a preset gas state equation and a preset limit pressure;
athird processing unit 4023, configured to obtain a unit available mass of the gaseous fuel at a preset temperature per unit volume according to the first mass and the second mass;
afourth processing unit 4024, configured to obtain a usable mass of the gaseous fuel according to a volume of the fuel bottle and a unit usable mass;
afifth processing unit 4025, configured to obtain the first supply electric energy according to the available mass of the gaseous fuel and a preset energy equation.
Specifically, as the apparatus described above, thesecond processing module 403 includes:
asixth processing unit 4031, configured to obtain output electric energy of the power battery according to a product of the power supply voltage, the battery capacity, and a discharge coefficient of the power battery;
aseventh processing unit 4032 is configured to obtain a second supply electrical energy according to a product of the output electrical energy and a second conversion efficiency of a second voltage converter connected to the power battery.
The device embodiment of the invention is a device corresponding to the method embodiment, and all implementation means in the method embodiment are applicable to the device embodiment and can achieve the same technical effects. Still another preferred embodiment of the present invention provides an upper computer, including: the device for determining the battery of the power hybrid electric vehicle is determined as described above.
The embodiment of the invention also provides an upper computer, which comprises: according to the device, when a technician obtains a combination of the gas fuel cell and the power cell, whether the requirement of the vehicle on the driving range is met can be obtained only by inputting the basic parameters of the gas fuel cell and the basic parameters of the power cell, so that the step of determining the combination of the gas fuel cell and the power cell according to the driving range requirement is greatly simplified, and the time cost and the labor cost are saved.
Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. A method of determining a battery for a power hybrid electric vehicle,
receiving the input fuel bottle volume of the gas fuel battery, the full charge pressure of the fuel bottle, and the power supply voltage and the battery capacity of the power battery;
obtaining first supply electric energy output by the gas fuel battery to a driving motor according to the volume of the fuel bottle and the full-charging pressure, and obtaining second supply electric energy output by the power battery to the driving motor according to the power supply voltage and the battery capacity;
obtaining a target driving range of the vehicle according to the first supply electric energy, the second supply electric energy and the unit energy consumption of the vehicle obtained in advance;
and if the target driving range meets the requirement of a preset driving range, determining that the gas fuel cell is the target gas fuel cell required by the vehicle, and determining that the power cell is the target power cell required by the vehicle.
2. The method of claim 1, wherein said step of deriving a first supply of electrical energy output by said gas fuel cell to a drive motor based on said fuel bottle volume and said full charge pressure comprises:
obtaining a first mass of the gas fuel in unit volume at a preset temperature according to a preset gas state equation and the full-charge pressure;
obtaining a second mass of the gas fuel in unit volume at a preset temperature according to the preset gas state equation and a preset limiting pressure;
obtaining the unit available mass of the gas fuel in unit volume at the preset temperature according to the first mass and the second mass;
obtaining the usable mass of the gas fuel according to the volume of the fuel bottle and the unit usable mass;
and obtaining the first supply electric energy according to the available mass of the gas fuel and a preset energy equation.
3. The method of claim 2, wherein in the predetermined energy equation, the first supply power is a product of the available mass of the gaseous fuel, a heating value of the gaseous fuel, a stack efficiency of the gaseous fuel cell, a system efficiency of the gaseous fuel cell, a first conversion efficiency of a first voltage converter coupled to the gaseous fuel cell, and a current life decay factor of the gaseous fuel cell.
4. The method of claim 1, wherein the step of deriving a second supply power output by the power battery to the drive motor based on the supply voltage and the battery capacity comprises:
obtaining the output electric energy of the power battery according to the product of the power supply voltage, the battery capacity and the discharge coefficient of the power battery;
and obtaining the second supply electric energy according to the product of the output electric energy and the second conversion efficiency of a second voltage converter connected with the power battery.
5. The method of claim 1, wherein the step of deriving the target range of the vehicle from the first supplied electrical energy, the second supplied electrical energy, and a previously obtained specific energy consumption of the vehicle comprises:
and substituting the first supply electric energy, the second supply electric energy and the unit energy consumption into a preset driving range equation to obtain the target driving range, wherein in the preset driving range equation, the target driving range is the sum of the ratios of the first supply electric energy and the second supply electric energy to the unit energy consumption respectively.
6. An apparatus for determining a battery of a power hybrid electric vehicle, comprising:
the receiving module is used for receiving the input fuel bottle volume of the gas fuel battery, the full-charge pressure of the fuel bottle, and the power supply voltage and the battery capacity of the power battery;
the first processing module is used for obtaining first supply electric energy output by the gas fuel battery to a driving motor according to the volume of the fuel bottle and the full-charging pressure, and obtaining second supply electric energy output by the power battery to the driving motor according to the power supply voltage and the battery capacity;
the second processing module is used for obtaining a target driving range of the vehicle according to the first supply electric energy, the second supply electric energy and the unit energy consumption of the vehicle obtained in advance;
and the third processing module is used for determining that the gas fuel cell is a target gas fuel cell required by the vehicle and the power cell is a target power cell required by the vehicle if the target driving range meets the requirement of a preset driving range.
7. The apparatus of claim 6, wherein the first processing module comprises:
the first processing unit is used for obtaining the first mass of the gas fuel in unit volume at the preset temperature according to a preset gas state equation and the full-charge pressure;
the second processing unit is used for obtaining a second mass of the gas fuel in unit volume at a preset temperature according to the preset gas state equation and a preset limiting pressure;
the third processing unit is used for obtaining the unit available mass of the gas fuel in unit volume at the preset temperature according to the first mass and the second mass;
the fourth processing unit is used for obtaining the usable mass of the gas fuel according to the volume of the fuel bottle and the unit usable mass;
and the fifth processing unit is used for obtaining the first supply electric energy according to the available mass of the gas fuel and a preset energy equation.
8. The apparatus of claim 6, wherein the second processing module comprises:
the sixth processing unit is used for obtaining the output electric energy of the power battery according to the product of the power supply voltage, the battery capacity and the discharge coefficient of the power battery;
and the seventh processing unit is used for obtaining the second supply electric energy according to the product of the output electric energy and the second conversion efficiency of a second voltage converter connected with the power battery.
9. A host computer, comprising: apparatus for determining a battery for a power hybrid electric vehicle as claimed in any one of claims 6 to 8.
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| CN112721743B (en)* | 2021-02-04 | 2022-10-28 | 武汉理工大学 | Fuel cell automobile remaining mileage prediction method based on charging-hydrogen using mode |
| CN113022380B (en)* | 2021-03-09 | 2022-06-21 | 吉林大学 | Fuel cell automobile power battery optimization design method considering attenuation |
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