A method for thermal management of a vehicle power battery and related equipment

Abstract

The present invention provides a vehicle power battery thermal management method, comprising: responding to a vehicle charging start instruction, determining the charging temperature range of the vehicle power battery based on the charging type information of the vehicle power battery, wherein the charging temperature range is the ambient temperature required by the power battery under the charging type; obtaining the current temperature information of the vehicle power battery; obtaining the first current power information of the vehicle power battery in a normal charging state; and when it is determined that the first current power information of the power battery is greater than or equal to the target power information and the current temperature information of the power battery is in the charging temperature range, reducing the power of the high-power temperature stabilization device in the vehicle and controlling the start of the vehicle temperature stabilization water pump. In this way, by starting the vehicle temperature stabilization water pump in advance before the end of charging, energy consumption can be reduced and the battery life can be increased while ensuring normal charging.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicle charging, and particularly relates to a method for thermal management of a vehicle power battery and related equipment. Background Art

[0002] During the working and charging processes of the power battery of current new energy vehicles, it is necessary to operate under a certain ambient temperature to ensure safe use. Therefore, when the power battery of a new energy vehicle operates under high voltage conditions, especially during super-fast charging, the temperature control requirements for the power battery are higher. The vehicle management system will activate the thermal management of the power battery according to the ambient temperature, and use a compressor, a PTC heater, and a fan to control the battery temperature. However, since the compressor and the PTC heater consume a large amount of electric energy during use, controlling the temperature through them while charging will affect the service life of the battery. Moreover, the fan can only provide ventilation and cooling, with relatively low efficiency and noise interference during use, which affects the user experience. Summary of the Invention

[0003] The present invention provides a method for thermal management of a vehicle power battery and related equipment to solve the problems that when controlling the temperature of a power battery through traditional power battery thermal management strategies, the service life of the power battery is affected due to the high energy consumption of the compressor and the PTC heater during use, and the noise interference and low temperature control efficiency generated during the temperature control process by the fan.

[0004] In a first aspect, the present invention provides a method for thermal management of a vehicle power battery, including:

[0005] In response to a charging start command of the vehicle, based on the charging type information of the vehicle's power battery, determine the charging temperature range of the vehicle's power battery, where the charging temperature range is the ambient temperature required by the power battery under the charging type;

[0006] Obtain the current temperature information of the vehicle's power battery;

[0007] Obtain the first current power information of the vehicle's power battery when it is in a normal charging state;

[0008] When it is determined that the first current power information of the power battery is greater than or equal to the target power information and the current temperature information of the power battery is within the charging temperature range, reduce the power of the high-power temperature stabilization equipment in the vehicle and control the activation of the temperature stabilization water pump of the vehicle.

[0009] Optionally, the method further includes:

[0010] Obtain the second current power information of the power battery when it is not in a charging state;

[0011] Obtain the historical charging information of the power battery.

[0012] Based on the historical charging information of the power battery, determine the historical maximum charging power of the power battery.

[0013] When the second current power of the power battery is equal to the historical maximum charging power of the power battery and the vehicle has not received the charging start instruction, control the temperature of the power battery based on the charging temperature range.

[0014] Optionally, the target power information is power information determined based on the type information of the power battery and the charging type information of the power battery.

[0015] Optionally, the method further includes:

[0016] Based on the charging type information of the power battery and the target power information, determine the preset end charging time of the power battery, where the preset end charging time is the charging time required for the power battery to be fully charged when the first current power information of the power battery is equal to the target power information.

[0017] Based on the preset end charging time of the power battery, reduce the power of the high-power temperature stabilization device in the vehicle and control the activation of the temperature stabilization water pump of the vehicle.

[0018] Optionally, the method further includes: obtaining the voltage information of the lead-acid battery of the vehicle.

[0019] Based on the type of the lead-acid battery, determine the preset voltage of the lead-acid battery.

[0020] When the voltage of the lead-acid battery is less than the preset voltage, maintain the power of the high-power temperature stabilization device in the vehicle and control the shutdown of the temperature stabilization water pump of the vehicle.

[0021] Optionally, the high-power temperature stabilization device in the vehicle includes the compressor of the vehicle and the PTC heater of the vehicle.

[0022] After the step of determining the charging temperature range of the power battery of the vehicle based on the charging type information of the power battery of the vehicle in response to the charging start instruction of the vehicle, it further includes:

[0023] Obtain the occupant compartment demand information of the vehicle.

[0024] Based on the occupant compartment requirement information, the current temperature of the power battery, and the charging temperature range of the power battery, adjust the distribution ratio of the refrigerant in the vehicle between the vehicle's air conditioning system and the battery cooling plate and / or the distribution ratio of the coolant in the vehicle between the vehicle's coolant tank and the battery cooling plate;

[0025] When it is determined that the first current power information of the power battery is greater than or equal to the target power information and the current temperature information of the power battery is within the charging temperature range, reducing the power of the high-power temperature stabilization equipment in the vehicle includes:

[0026] When the high-power temperature stabilization equipment in the vehicle is in the heating state, reduce the distribution ratio of the refrigerant and / or the coolant at the battery cooling plate;

[0027] When the high-power temperature stabilization equipment in the vehicle is in the cooling state, reduce the distribution ratio of the refrigerant at the battery cooling plate.

[0028] Optionally, the method further includes:

[0029] Based on the type information of the power battery, determine the temperature threshold of the power battery;

[0030] When the temperature of the power battery is greater than or equal to the temperature threshold, control all the refrigerant to be distributed to the battery cooling plate.

[0031] In a second aspect, the present invention provides a vehicle power battery thermal management device, including:

[0032] A determination module, configured to, in response to a charging start instruction of the vehicle, determine a charging temperature range of the vehicle's power battery based on the charging type information of the vehicle's power battery, where the charging temperature range is the ambient temperature required by the power battery under the charging type;

[0033] A first acquisition module, configured to acquire the current temperature information of the vehicle's power battery;

[0034] A second acquisition module, configured to acquire the first current power information of the vehicle's power battery in a normal charging state;

[0035] A control module, configured to, when it is determined that the first current power information of the power battery is greater than or equal to the target power information and the current temperature information of the power battery is within the charging temperature range, reduce the power of the high-power temperature stabilization equipment in the vehicle and control the start of the temperature stabilization water pump of the vehicle.

[0036] In a third aspect, the present invention further provides an electronic device, including a memory and a processor. It is characterized in that when the processor executes a computer program stored in the memory, the steps of the vehicle power battery thermal management method according to any one of the above first aspects are implemented.

[0037] In a fourth aspect, the present invention further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the vehicle power battery thermal management method according to any one of the above first aspects are implemented.

[0038] As can be seen from the above technical solutions, the embodiments of the present application provide a vehicle power battery thermal management method, including: in response to a charging start instruction of the vehicle, based on the charging type information of the vehicle's power battery, determining the charging temperature range of the vehicle's power battery, where the charging temperature range is the ambient temperature required by the power battery under the charging type; obtaining the current temperature information of the vehicle's power battery; obtaining the first current power information of the vehicle's power battery in a normal charging state; when it is determined that the first current power information of the power battery is greater than or equal to the target power information and the current temperature information of the power battery is within the charging temperature range, reducing the power of the high-power temperature stabilization device in the vehicle and controlling the opening of the temperature stabilization water pump of the vehicle. Currently, the temperature stabilization of vehicle power batteries usually requires using compressors, PTC heaters, and fans to control the temperature of the battery during charging. However, since compressors and PTC heaters consume a large amount of electrical energy during use, controlling the temperature through them during charging will affect the service life of the battery, and fans can only provide ventilation and cooling, with relatively low efficiency and noise interference during use, affecting the user experience. In the embodiments of the present application, by reducing the power of the high-power temperature stabilization device in the vehicle and turning on the temperature stabilization water pump of the vehicle when the temperature of the power battery is stable within the charging temperature range before the end of charging, it is possible to reduce the power consumption of power battery temperature stabilization while ensuring the normal charging of the power battery and improving the service life of the power battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0040] Figure 1 It is a schematic flowchart of a vehicle power battery thermal management method provided by an embodiment of the present application;

[0041] Figure 2 It is a schematic structural diagram of a vehicle power battery thermal management device provided by an embodiment of the present application;

[0042] Figure 3 Schematic diagram of an embodiment of an electronic device provided by an embodiment of the present application;

[0043] Figure 4 Schematic diagram of an embodiment of a computer-readable storage medium provided by an embodiment of the present application. Detailed implementation manners

[0044] The embodiments will be described in detail below, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following embodiments do not represent all implementation manners consistent with the present application. They are only examples of systems and methods consistent with some aspects of the present application detailed in the claims. In several embodiments provided by the embodiments of the present application, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described below are merely exemplary.

[0045] A vehicle power battery thermal management method provided by the present application, as Figure 1 shown, includes:

[0046] Step S110: In response to a vehicle charging start instruction, based on the charging type information of the vehicle's power battery, determine the charging temperature range of the vehicle's power battery, where the charging temperature range is the ambient temperature required by the power battery under the charging type.

[0047] Exemplarily, the charging type of the power battery can be set by the driver independently and automatically started by the vehicle during each charging process, can be determined based on the basic information of the charging pile, or can be determined based on the vehicle's battery management system. Based on the charging type of the vehicle's power battery, the temperature change law during the power battery charging process can be determined, and based on the temperature change law, the charging temperature range of the vehicle's power battery can be determined. For example, when the charging type is super fast charging with a charging current of 400A, based on the super fast charging type, the charging temperature range of the vehicle's power battery is determined to be 15 - 25°C.

[0048] Step S120: Obtain the current temperature information of the vehicle's power battery.

[0049] Exemplarily, the current temperature information of the power battery of the vehicle can be obtained through the battery management system of the vehicle, can be obtained through the temperature sensor arranged on the power battery, or can be obtained through the temperature sensor arranged around the power battery. Based on the positional relationship between the sensor and the power battery, the current temperature information of the power battery of the vehicle is obtained.

[0050] Step S130: Obtain the first current power information of the power battery of the vehicle when it is in a normal charging state.

[0051] Exemplarily, the first current power information of the power battery of the vehicle when it is in a normal charging state can be obtained through the battery management system of the vehicle.

[0052] Step S140: When it is determined that the first current power information of the power battery is greater than or equal to the target power information and the current temperature information of the power battery is within the charging temperature range, reduce the power of the high-power temperature stabilization device in the vehicle and control the activation of the temperature stabilization water pump of the vehicle.

[0053] Exemplarily, the high-power temperature stabilization device in the vehicle and the temperature stabilization water pump of the vehicle can be controlled through the controller of the vehicle.

[0054] According to some embodiments, the method further includes:

[0055] Obtain the second current power information of the power battery when it is not in a charging state;

[0056] Obtain the historical charging information of the power battery;

[0057] Based on the historical charging information of the power battery, determine the historical maximum charging power of the power battery;

[0058] When the second current power of the power battery is equal to the historical maximum charging power of the power battery and the vehicle has not received the charging start instruction, control the temperature of the power battery based on the charging temperature range.

[0059] Exemplarily, the second current power information and the historical charging information of the power battery of the vehicle when it is not in a charging state can be obtained through the battery management system of the vehicle, where the historical charging information may include the remaining power information of the power battery at the moment before charging.

[0060] Based on the historical charging information of the power battery, the start time for early temperature stabilization can be automatically determined. When the vehicle does not receive a charging start command, the temperature of the power battery can be controlled within the above-mentioned charging temperature range, enabling the temperature of the power battery to be pre-controlled before charging. After the power battery is connected to the power supply, charging of the power battery can be directly carried out, reducing the charging waiting time and improving the charging efficiency and applicability.

[0061] According to some embodiments, the above-mentioned target power information is power information determined based on the type information of the above-mentioned power battery and the charging type information of the above-mentioned power battery.

[0062] Exemplarily, the maximum charging temperature of the power battery can be determined through the type information of the above-mentioned power battery. The type information and charging type information of the power battery can be obtained through the vehicle's battery management system. The charging speed and the temperature change law during the charging process of the above-mentioned power battery under the above-mentioned charging type can be determined through the type information and charging type information of the power battery. Based on the above-mentioned charging speed and temperature change law, the power corresponding to the situation where the temperature of the above-mentioned power battery does not exceed the above-mentioned maximum charging temperature when charging the above-mentioned power battery of the above-mentioned type starting from a certain power and reaching full charge is the above-mentioned target power information. Additionally, the historical charging information of the power battery can be obtained through the vehicle's battery management system, and the above-mentioned target power information can be determined based on the above-mentioned historical charging information.

[0063] By determining the target power information, the power of the high-power temperature stabilization device in the vehicle and the start time of the temperature stabilization water pump in the vehicle can be determined. By changing the control strategy at the above-mentioned time, the power consumption of the power battery can be saved, the charging time can be shortened, and the service life of the battery can be extended while ensuring normal charging of the power battery.

[0064] According to some embodiments, the above method further includes:

[0065] Based on the charging type information of the above-mentioned power battery and the above-mentioned target power information, the preset end charging time of the above-mentioned power battery is determined, where the preset end charging time is the charging time required for the above-mentioned power battery to be fully charged when the first current power information of the above-mentioned power battery is equal to the above-mentioned target power information;

[0066] Based on the preset end charging time of the above-mentioned power battery, the power of the high-power temperature stabilization device in the above-mentioned vehicle is reduced, and the start of the temperature stabilization water pump in the above-mentioned vehicle is controlled.

[0067] Exemplarily, based on the charging type information of the above power battery, the relationship between the charging amount and the charging time of the power battery can be determined. When the first current power information of the above power battery is equal to the above target power information, based on the relationship between the charging amount and the charging time of the power battery and the target power, the preset end charging time of the above power battery can be determined.

[0068] At the above preset end charging time, changing the charging strategy can save the power consumption of the power battery, shorten the charging time, and extend the service life of the battery while ensuring the normal charging of the power battery.

[0069] According to some embodiments, the above method further includes:

[0070] Obtain the voltage information of the lead-acid battery of the above vehicle;

[0071] Based on the type of the above lead-acid battery, determine the preset voltage of the above lead-acid battery;

[0072] When the voltage of the above lead-acid battery is less than the above preset voltage, maintain the power of the high-power temperature stabilization device in the above vehicle and control the shutdown of the temperature stabilization water pump of the above vehicle.

[0073] Exemplarily, the voltage information of the above lead-acid battery can be obtained through the controller of the lead-acid battery. Based on the type of the lead-acid battery, the discharged voltage of the lead-acid battery can be obtained. Based on the above discharged voltage, it can be determined that the above discharged voltage is the preset voltage of the lead-acid battery. Or based on the type of the lead-acid battery, the redundancy value of the discharged voltage can be determined. Based on the above discharged voltage and the redundancy value of the discharged voltage, the preset voltage of the above lead-acid battery can be determined.

[0074] When the voltage of the lead-acid battery is lower than the preset voltage, the lead-acid battery will be discharged. Continuing to use the lead-acid battery for power supply in the discharged state is likely to damage the battery and affect its service life.

[0075] According to some embodiments, the high-power temperature stabilization device in the above vehicle includes the compressor of the above vehicle and the PTC heater of the above vehicle;

[0076] After the step of, in response to the vehicle charging start instruction, determining the charging temperature range of the power battery of the above vehicle based on the charging type information of the power battery of the above vehicle, it further includes:

[0077] Obtain the passenger compartment demand information of the above vehicle;

[0078] Based on the above-mentioned occupant compartment requirement information, the current temperature of the above-mentioned power battery, and the charging temperature range of the above-mentioned power battery, adjust the distribution ratio of the refrigerant of the above-mentioned vehicle between the air-conditioning system of the above-mentioned vehicle and the battery cooling plate and / or the coolant of the above-mentioned vehicle between the coolant tank of the above-mentioned vehicle and the battery cooling plate;

[0079] In the case where it is determined that the first current power information of the above-mentioned power battery is greater than or equal to the target power information and the current temperature information of the power battery is within the above-mentioned charging temperature range, reduce the power of the high-power temperature stabilization equipment in the above-mentioned vehicle, including:

[0080] When the high-power temperature stabilization equipment in the above-mentioned vehicle is in the heating state, reduce the distribution ratio of the refrigerant and / or the coolant at the above-mentioned battery cooling plate;

[0081] When the high-power temperature stabilization equipment in the above-mentioned vehicle is in the temperature reduction state, reduce the distribution ratio of the refrigerant at the above-mentioned battery cooling plate.

[0082] Exemplarily, the temperature requirement information of the vehicle occupant compartment can be obtained through the vehicle's on-board management system. Among them, the above-mentioned temperature requirement information can include the temperature information of the vehicle air-conditioning system. By setting control valves between the air-conditioning compressor of the vehicle and the battery cooling plate and between the coolant tank of the vehicle and the battery cooling plate, the flow rate of the refrigerant and the coolant can be controlled by controlling the opening and closing of the above-mentioned valves or by the area, and the above-mentioned distribution ratios can also be controlled. When there is a demand for using the air-conditioning system in the vehicle occupant compartment, the refrigerant and / or the coolant can be preferentially provided for the occupant compartment.

[0083] For example, when the power battery is in the state of super fast charging, the obtained charging temperature range of the power battery is 15 - 25°C, and the current temperature of the power battery is 36°C, which is higher than the highest temperature of 25°C in the charging temperature range of the power battery. The preset voltage of the lead-acid battery is 10V, and the vehicle occupant compartment does not use air-conditioning for refrigeration. The temperature of the refrigerant is controlled at 15°C through the vehicle's air-conditioning compressor, and all the refrigerant of the vehicle is distributed to the battery cooling plate. By controlling the valve, the flow rate of the refrigerant reaches 20L / min. Based on the preset end charging time, the temperature of the power battery at this time is obtained as 15°C, and the voltage of the lead-acid battery at this time is obtained as 12V, which is higher than the preset voltage. It is determined that the lead-acid battery can operate normally, and then the temperature stabilization water pump of the vehicle is controlled to be turned on until the charging is completed.

[0084] According to some embodiments, the above method further includes:

[0085] Based on the type information of the above-mentioned power battery, determine the temperature threshold of the above-mentioned power battery;

[0086] When the temperature of the above power battery is greater than or equal to the above temperature threshold, control all of the above refrigerant to be distributed to the above battery cooling plate.

[0087] Exemplarily, the temperature threshold of the above power battery may not be within the above charging temperature range. When the temperature of the above power battery is greater than or equal to the temperature threshold, an alarm message may be sent to the vehicle through the vehicle's on-board management system.

[0088] For example, based on the type information of the power battery, the temperature threshold of the power battery can be determined to be 35°C. When it is detected that the temperature of the power battery at this time is 35°C, and it is detected that the vehicle occupant compartment is being cooled by the air conditioner, at this time, control the vehicle's on-board management system to turn off the air-conditioning cooling in the occupant compartment, control the temperature of the refrigerant by the vehicle's air-conditioning compressor to be 5°C, and distribute all of the vehicle's refrigerant to the battery cooling plate. By controlling the valve, the refrigerant flow rate reaches 20 L / min.

[0089] When the temperature of the above power battery is greater than or equal to the above temperature threshold, even if the vehicle occupant compartment has a temperature requirement, all of the refrigerant will be distributed to the above battery cooling plate, which can improve the safety during the charging process, ensure the stable operation of the battery, and extend the service life of the battery.

[0090] Please refer to Figure 2 , Figure 2 which is a schematic structural diagram of a vehicle power battery thermal management device provided by an embodiment of the present application.

[0091] An embodiment of the present application provides a vehicle power battery thermal management device 200, which includes:

[0092] A determination module 201, configured to, in response to a charging start instruction of the vehicle, determine a charging temperature range of the vehicle's power battery based on the charging type information of the vehicle's power battery, where the charging temperature range is the ambient temperature required by the power battery under the above charging type;

[0093] A first acquisition module 202, configured to acquire the current temperature information of the vehicle's power battery;

[0094] A second acquisition module 203, configured to acquire the first current power information of the vehicle's power battery in a normal charging state;

[0095] A control module 204, configured to, when it is determined that the first current power information of the power battery is greater than or equal to the target power information and the current temperature information of the power battery is within the above charging temperature range, reduce the power of the high-power temperature stabilization device in the vehicle and control the start of the temperature stabilization water pump of the vehicle.

[0096] A vehicle power battery thermal management device 200 can achieve Figure 1 Each process implemented in the method embodiments is not described herein again to avoid repetition.

[0097] As Figure 3 shown, Figure 3 This is a schematic structural diagram of an electronic device provided by an embodiment of the present application.

[0098] An embodiment of the present application provides an electronic device 300, including a memory 310, a processor 320, and a computer program 311 stored on the memory 310 and executable on the processor 320. When the processor 320 executes the computer program 311, the following steps are implemented:

[0099] In response to a vehicle charging start instruction, based on the charging type information of the vehicle's power battery, determine the charging temperature range of the vehicle's power battery, where the charging temperature range is the ambient temperature required by the power battery under the charging type;

[0100] Obtain the current temperature information of the vehicle's power battery;

[0101] Obtain the first current power information of the vehicle's power battery in a normal charging state;

[0102] When it is determined that the first current power information of the power battery is greater than or equal to the target power information and the current temperature information of the power battery is within the charging temperature range, reduce the power of the high-power temperature stabilization device in the vehicle and control the activation of the temperature stabilization water pump of the vehicle.

[0103] In a specific implementation process, when the processor 320 executes the computer program 311, it can implement Figure 4 any one of the implementation manners in the corresponding embodiments.

[0104] Since the electronic device introduced in this embodiment is the device used to implement a device in an embodiment of the present application, based on the method introduced in an embodiment of the present application, those skilled in the art can understand the specific implementation manners of the electronic device in this embodiment and its various variations. Therefore, the specific implementation of how this electronic device implements the method in an embodiment of the present application is not described in detail herein. As long as the device used by those skilled in the art to implement the method in an embodiment of the present application belongs to the scope to be protected by the present application.

[0105] As Figure 4 shown, Figure 4 This is a schematic structural diagram of a computer-readable storage medium provided by an embodiment of the present application.

[0106] This embodiment provides a computer-readable storage medium 400, on which a computer program 411 is stored. When the computer program 411 is executed by a processor, the following steps are implemented:

[0107] In response to a charging start instruction of the vehicle, based on the charging type information of the power battery of the vehicle, determine the charging temperature range of the power battery of the vehicle, where the charging temperature range is the ambient temperature required by the power battery under the charging type;

[0108] Obtain the current temperature information of the power battery of the vehicle;

[0109] Obtain the first current power information of the power battery of the vehicle when it is in a normal charging state;

[0110] When it is determined that the first current power information of the power battery is greater than or equal to the target power information and the current temperature information of the power battery is within the charging temperature range, reduce the power of the high-power temperature stabilization device in the vehicle and control the activation of the temperature stabilization water pump of the vehicle.

[0111] It should be noted that in the above embodiments, the descriptions of each embodiment have their own focuses. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0112] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0113] The present application is described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or block in the flowchart and / or block diagram can be implemented by computer program instructions, and the combination of the processes and / or blocks in the flowchart and / or block diagram can also be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded computer, or other programmable data processing devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing devices generate a device for implementing the functions specified in one Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0114] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to work in a particular manner, such that the instructions stored in the computer-readable memory produce a manufacture including an instruction device that implements the functions specified in one or more of the processes and / or blocks Figure 1 of the process or processes and / or blocks Figure 1 specified in one or more of the blocks or blocks.

[0115] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus, such that a series of operational steps are performed on the computer or other programmable apparatus to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable apparatus provide steps for implementing the functions specified in one or more of the processes and / or blocks Figure 1 of the process or processes and / or blocks Figure 1 specified in one or more of the blocks or blocks.

[0116] The embodiments of the present application also provide a computer program product, which includes computer software instructions. When the computer software instructions run on a processing device, the processing device is caused to execute the processes in the control method of the hybrid vehicle in the corresponding Figure 1 embodiment.

[0117] The above computer program product includes one or more computer instructions. When the above computer program instructions are loaded and executed on a computer, all or part of the processes or functions according to the above embodiments of the present application are generated. The above computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The above computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the above computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wirelessly (such as infrared, wireless, microwave, etc.). The above computer-readable storage medium may be any available medium that a computer can store, or a data storage device such as a server or data center that includes one or more integrated available media. The above available media may be magnetic media (such as floppy disks, hard disks, magnetic tapes), optical media (such as DVDs), or semiconductor media (such as solid state disks (SSDs)), etc.

[0118] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments, and will not be described herein again.

[0119] In several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the above division of units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections between each other can be through some interfaces. The indirect couplings or communication connections of devices or units can be in electrical, mechanical, or other forms.

[0120] The units described above as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0121] In addition, in each embodiment of the present application, the functional units can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above integrated units can be implemented in the form of hardware or in the form of software functional units.

[0122] If the above integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, or all or part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods in each embodiment of the present application. And the aforementioned storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical discs that can store program codes.

[0123] In summary, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for thermal management of a vehicle power battery, characterized in that, Including: In response to a charging start instruction of the vehicle, based on the charging type information of the power battery of the vehicle, determine the charging temperature range of the power battery of the vehicle, where the charging temperature range is the ambient temperature required by the power battery under the charging type; Obtain the current temperature information of the power battery of the vehicle; Obtain the first current power information of the power battery of the vehicle when it is in a normal charging state; When it is determined that the first current power information of the power battery is greater than or equal to the target power information and the current temperature information of the power battery is within the charging temperature range, reduce the power of the high-power temperature stabilization device in the vehicle and control the activation of the temperature stabilization water pump of the vehicle.

2. The method according to claim 1, wherein Also including: Obtain the second current power information of the power battery when it is not in a charging state; Obtain the historical charging information of the power battery; Based on the historical charging information of the power battery, determine the historical maximum charging power of the power battery; When the second current power of the power battery is equal to the historical maximum charging power of the power battery and the vehicle does not receive the charging start instruction, control the temperature of the power battery based on the charging temperature range.

3. The method according to claim 1, wherein The target power information is the power information determined based on the type information of the power battery and the charging type information of the power battery.

4. The method according to claim 1, characterized in that, Also including: Based on the charging type information of the power battery and the target power information, determine the preset end charging time of the power battery, where the preset end charging time is the charging time required for the power battery to be fully charged when the first current power information of the power battery is equal to the target power information; Based on the preset end charging time of the power battery, reduce the power of the high-power temperature stabilization device in the vehicle and control the activation of the temperature stabilization water pump of the vehicle.

5. The method according to claim 1, characterized in that, Also including: Obtain the voltage information of the lead-acid battery of the vehicle; Based on the type of the lead-acid battery, determine the preset voltage of the lead-acid battery; When the voltage of the lead-acid battery is less than the preset voltage, maintain the power of the high-power temperature stabilization device in the vehicle and control the shutdown of the temperature stabilization water pump of the vehicle.

6. The method according to claim 1, wherein The high-power temperature stabilization device in the vehicle includes the compressor of the vehicle and the PTC heater of the vehicle; After the step of, in response to a charging start instruction of the vehicle, based on the charging type information of the power battery of the vehicle, determining the charging temperature range of the power battery of the vehicle, it further includes: Obtain the occupant compartment demand information of the vehicle; Based on the occupant compartment demand information, the current temperature of the power battery, and the charging temperature range of the power battery, adjust the distribution ratio of the refrigerant in the air conditioning system of the vehicle and the battery cooling plate and / or the coolant in the coolant tank of the vehicle and the battery cooling plate; The step of, when it is determined that the first current power information of the power battery is greater than or equal to the target power information and the current temperature information of the power battery is within the charging temperature range, reducing the power of the high-power temperature stabilization device in the vehicle includes: When the high-power temperature stabilization device in the vehicle is in the heating state, reduce the distribution ratio of the refrigerant and / or the coolant at the battery cooling plate; When the high-power temperature stabilization device in the vehicle is in the cooling state, reduce the distribution ratio of the refrigerant at the battery cooling plate.

7. The method according to claim 6, characterized in that, It further includes: Based on the type information of the power battery, determine the temperature threshold of the power battery; When the temperature of the power battery is greater than or equal to the temperature threshold, control all the refrigerant to be distributed to the battery cooling plate.

8. A vehicle power battery thermal management device, characterized in that, It includes: A determination module, configured to, in response to a vehicle charging start instruction, based on the charging type information of the vehicle's power battery, determine the charging temperature range of the vehicle's power battery, where the charging temperature range is the ambient temperature required by the power battery under the charging type; A first acquisition module, configured to acquire the current temperature information of the vehicle's power battery; A second acquisition module, configured to acquire the first current power information of the vehicle's power battery in a normal charging state; A control module, configured to, when it is determined that the first current power information of the power battery is greater than or equal to the target power information and the current temperature information of the power battery is within the charging temperature range, reduce the power of the high-power temperature stabilization device in the vehicle and control the activation of the temperature stabilization water pump of the vehicle.

9. An electronic device, comprising a memory and a processor, characterized in that, When the processor executes the computer program stored in the memory, it implements the steps of the vehicle power battery thermal management method according to any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by the processor, it implements the steps of the vehicle power battery thermal management method according to any one of claims 1 to 7.

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