Power battery heating control method and device

Abstract

The present invention discloses a power battery heating control method and device, relating to the technical field of power batteries. During the process of a power battery charging a storage battery, the present invention determines a target current based on the battery charging current and the total output current of the power battery to various components, obtains a target temperature corresponding to the target current, and determines a heating start-up temperature based on the target temperature. If the power battery temperature is lower than the heating start-up temperature, the power battery is heated, which is equivalent to not heating the power battery when the power battery temperature is higher than the heating start-up temperature. A power battery temperature higher than the heating start-up temperature indicates that the power battery output can simultaneously meet the charging needs of various components and the storage battery. This ensures smooth intelligent charging while reducing the energy consumption of power battery heating and the energy consumption of the entire vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of power batteries, and in particular to a power battery heating control method and device. Background Art

[0002] Electric vehicles have two energy sources: a power battery and a small battery. The small battery has a very limited capacity. If the vehicle is not used for an extended period, the small battery will self-discharge, leading to a low charge and, in turn, preventing the vehicle from starting. Currently, when the small battery is low on power, the vehicle activates high voltage, allowing the power battery to recharge the small battery, entering intelligent recharge mode. However, when the vehicle is high voltage, the PTC (Positive Temperature Coefficient) begins to heat the power battery, which increases unnecessary energy consumption and leads to high energy consumption for the entire vehicle. Summary of the Invention

[0003] The present invention solves the technical problem of high energy consumption of the entire vehicle during the intelligent charging process of small batteries in electric vehicles by providing a power battery heating control method and device.

[0004] On the one hand, the embodiments of the present invention provide the following technical solutions:

[0005] A power battery heating control method, comprising:

[0006] During the process of the power battery charging the storage battery, the power battery temperature, the battery charging current, and the total output current of the power battery to each component are obtained;

[0007] Determining a target current according to the battery charging current and the total output current;

[0008] Obtaining a target temperature corresponding to the target current, where the target temperature is a minimum temperature of the power battery required to ensure that the output of the power battery is not lower than the target current under a preset SOC threshold;

[0009] determining a heating start temperature according to the target temperature;

[0010] If the temperature of the power battery is lower than the heating start temperature, the power battery is heated.

[0011] Preferably, the battery charging current is a real-time charging current when the power battery charges the battery, or a preset charging current threshold, and the preset charging current threshold is the maximum value of the real-time charging current under normal temperature.

[0012] Preferably, the preset SOC threshold is 10%.

[0013] Preferably, determining the target current according to the battery charging current and the total output current includes:

[0014] The target current is determined to be the sum of the battery charging current and the total output current.

[0015] Preferably, determining the heating start temperature according to the target temperature includes:

[0016] The heating start temperature is determined to be the target temperature.

[0017] Preferably, determining the heating start temperature according to the target temperature includes:

[0018] The heating start temperature is determined to be the sum of the target temperature and a preset temperature.

[0019] Preferably, the preset temperature ranges from 3 to 5°C.

[0020] On the other hand, the embodiment of the present invention also provides the following technical solutions:

[0021] A power battery heating control device, comprising:

[0022] A charging data acquisition module is used to obtain the power battery temperature, battery charging current, and the total output current of the power battery to each component during the process of the power battery charging the storage battery;

[0023] a target current determination module, configured to determine a target current based on the battery charging current and the total output current;

[0024] a target temperature determination module, configured to obtain a target temperature corresponding to the target current, wherein the target temperature is a minimum temperature of the power battery required to ensure that the output of the power battery is not lower than the target current under a preset SOC threshold;

[0025] A heating start temperature determination module, configured to determine the heating start temperature according to the target temperature;

[0026] The power battery heating control module is configured to heat the power battery if the power battery temperature is lower than the heating start-up temperature.

[0027] Preferably, the battery charging current is a real-time charging current when the power battery charges the battery, or a preset charging current threshold, and the preset charging current threshold is the maximum value of the real-time charging current under normal temperature.

[0028] Preferably, the preset SOC threshold is 10%.

[0029] Preferably, the target current determination module is further configured to:

[0030] The target current is determined to be the sum of the battery charging current and the total output current.

[0031] Preferably, the heating start temperature determination module is further used to:

[0032] The heating start temperature is determined to be the target temperature.

[0033] Preferably, the heating start temperature determination module is further used to:

[0034] The heating start temperature is determined to be the sum of the target temperature and a preset temperature.

[0035] Preferably, the preset temperature ranges from 3 to 5°C.

[0036] On the other hand, the embodiment of the present invention also provides the following technical solutions:

[0037] An electronic device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements any of the above-mentioned power battery heating control methods when executing the program.

[0038] On the other hand, the embodiment of the present invention also provides the following technical solutions:

[0039] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements any of the above-mentioned power battery heating control methods.

[0040] One or more technical solutions provided by the present invention have at least the following technical effects or advantages:

[0041] In the process of the power battery replenishing the storage battery, the present invention determines the target current according to the battery replenishing current and the total output current of the power battery to various components, obtains the target temperature corresponding to the target current, and determines the heating start temperature according to the target temperature. If the power battery temperature is lower than the heating start temperature, the power battery is heated, which is equivalent to not heating the power battery when the power battery temperature is higher than the heating start temperature. The power battery temperature being higher than the heating start temperature indicates that the output of the power battery can simultaneously meet the charging needs of various components and the storage battery. In this way, while ensuring the smooth progress of intelligent charging, the energy consumption of heating the power battery is reduced, thereby reducing the energy consumption of the entire vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0043] Figure 1 This is a flow chart of a power battery heating control method according to an embodiment of the present invention;

[0044] Figure 2 Schematic diagram of the structure of a power battery heating control device in an embodiment of the present invention. DETAILED DESCRIPTION

[0045] The embodiments of the present invention solve the technical problem of high energy consumption of the entire vehicle during the intelligent charging process of small batteries in electric vehicles by providing a power battery heating control method and device.

[0046] In order to better understand the technical solution of the present invention, the technical solution of the present invention will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0047] First, the term "and / or" as used herein simply describes a relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A alone, A and B together, or B alone. Furthermore, the character " / " in this document generally indicates an "or" relationship between the associated objects.

[0048] like Figure 1 As shown, the power battery heating control method of this embodiment includes:

[0049] Step S1, during the process of the power battery charging the storage battery, obtaining the power battery temperature, the battery charging current, and the total output current of the power battery to each component;

[0050] Step S2, determining the target current based on the battery charging current and the total output current of the power battery to each component;

[0051] Step S3, obtaining a target temperature corresponding to the target current, where the target temperature is the minimum temperature of the power battery required to ensure that the output of the power battery is not lower than the target current under a preset SOC threshold;

[0052] Step S4, determining the heating start temperature according to the target temperature;

[0053] Step S5: If the temperature of the power battery is lower than the heating start temperature, the power battery is heated.

[0054] In this embodiment, when the electric vehicle is stationary, if it is detected that the SOC of the small battery is ≤50%, the small battery controller will wake up the vehicle controller, the vehicle controller will wake up the battery controller, the battery controller will power up the entire vehicle with high voltage, and then recharge the small battery. When the SOC of the small battery is ≥80%, the recharging will stop.

[0055] In step S1, the battery recharge current is the real-time recharge current of the power battery when recharging the battery, or a preset recharge current threshold, which is the maximum value of the real-time recharge current at room temperature. The real-time recharge current of the power battery when recharging the battery can be pre-measured at room temperature to obtain a large amount of real-time recharge current data, and the maximum value of all real-time recharge currents is selected as the preset recharge current threshold. The total output current of the power battery to each component represents the current demand of each component, including the total output current of the power battery to each high-voltage component and the total output current of the power battery to each low-voltage component.

[0056] Step S2 may specifically include: determining the target current as the sum of the battery charging current, the total output current of the power battery to each component and the preset current, the preset current being 1A; it may also specifically include: determining the target current as the sum of the battery charging current and the total output current of the power battery to each component.

[0057] In step S3, the preset SOC threshold is the minimum SOC of the power battery that ensures that smart charging can be triggered, for example, 10%; the smart charging mode will be allowed only when the SOC of the power battery is not lower than the preset SOC threshold; the smart charging mode will not be allowed when the SOC of the power battery is lower than the preset SOC threshold. The application scenario of this embodiment is that the SOC of the power battery is not lower than the preset SOC threshold. When the SOC of the power battery is fixed, the higher the temperature of the power battery, the stronger the output capacity of the power battery; the lower the temperature of the power battery, the weaker the output capacity of the power battery. When the temperature of the power battery is fixed, the greater the SOC of the power battery, the stronger the output capacity of the power battery; the smaller the SOC of the power battery, the weaker the output capacity of the power battery. When the SOC of the power battery is at the preset SOC threshold, if the temperature of the power battery is higher than the minimum temperature of the power battery, the output of the power battery can reach the target current; if the temperature of the power battery is lower than the minimum temperature of the power battery, the output of the power battery cannot reach the target current. This embodiment pre-measures the target temperatures required to achieve various target currents when the power battery's SOC is at a preset SOC threshold. Once the target current is determined, the corresponding target temperature can be directly found. It should be understood that if the power battery temperature is above the target temperature, the power battery's output can simultaneously meet the needs of various components and the battery's recharge, regardless of the power battery's SOC at any value above the preset SOC threshold. For example, if the preset SOC threshold is 10%, the minimum power battery temperature required to ensure the power battery output can achieve a certain target current is -23°C, meaning the target temperature corresponding to a certain target current is -23°C.

[0058] Step S4 may include: determining the heating start temperature to be the target temperature; and may also include: determining the heating start temperature to be the sum of the target temperature and a preset temperature, where the preset temperature may be in the range of 3-5°C.

[0059] In step S5, if the power battery temperature is higher than the heating start-up temperature, it means that the output of the power battery can simultaneously meet the needs of various components and battery charging, and there is no need to heat the power battery; if the power battery temperature is lower than the heating start-up temperature, it means that the output of the power battery cannot simultaneously meet the needs of various components and battery charging, and the power battery needs to be heated to improve the output capacity of the power battery.

[0060] As can be seen from the above, in this embodiment, during the process of the power battery replenishing the storage battery, the target current is determined according to the battery replenishing current and the total output current of the power battery to various components, the target temperature corresponding to the target current is obtained, and the heating start temperature is determined according to the target temperature. If the power battery temperature is lower than the heating start temperature, the power battery is heated, which is equivalent to not heating the power battery when the power battery temperature is higher than the heating start temperature. The power battery temperature being higher than the heating start temperature indicates that the output of the power battery can simultaneously meet the charging needs of various components and the storage battery. In this way, while ensuring the smooth progress of intelligent charging, the energy consumption of heating the power battery is reduced, thereby reducing the energy consumption of the entire vehicle.

[0061] In this embodiment, when the target current is the sum of the battery charging current and the total output current of the power battery to each component, it can be divided into the following cases:

[0062] Case 1: The battery charging current is the real-time charging current when the power battery is charging the battery, and the heating start temperature is the target temperature. In this case, under critical conditions such as when the power battery temperature is slightly higher than the heating start temperature and the power battery SOC is at the preset SOC threshold, the power battery output may not reach the target current at this power battery temperature due to a calibration error of the target temperature. If the power battery is not heated, the power battery will not be able to meet the battery charging needs.

[0063] Case 2: The battery charging current is at the preset charging current threshold, and the heating start temperature is the target temperature. In this case, the real-time charging current may be lower than the preset charging current threshold. The target current determined in this way should be greater than the actual current requirements of various components and battery charging. The target current has a certain degree of redundancy. In case 1, the power battery may be heated only after the power battery temperature drops below -23°C. In case 2, the power battery can be heated when the power battery temperature drops below -20°C. Although the power battery output may be sufficient to meet the charging needs of various components and the battery when the power battery temperature is between -20-23°C, which may cause unnecessary heating of the power battery, it is beneficial to ensure smooth battery charging.

[0064] Case 3: The battery charging current is the real-time charging current when the power battery is charging the storage battery, and the heating start temperature is the sum of the target temperature and the preset temperature. In this case, the heating start temperature is higher than the target temperature, and the heating start temperature has a certain degree of redundancy. As in Case 2, in some cases, unnecessary heating of the power battery may be caused, but it is beneficial to ensure smooth battery charging.

[0065] Case 4: The battery charging current is the preset charging current threshold, and the heating start-up temperature is the sum of the target temperature and the preset temperature. In this case, the real-time charging current may be lower than the preset charging current threshold. The target current determined in this way must be greater than the actual current requirements of each component and the battery charging. The target current has a certain redundancy, and the heating start-up temperature is greater than the target temperature. The heating start-up temperature has a certain redundancy, which is more conducive to ensuring the smooth progress of battery charging.

[0066] like Figure 2 As shown, this embodiment also provides a power battery heating control device, including:

[0067] The charging data acquisition module is used to obtain the power battery temperature, battery charging current and the total output current of the power battery to each component during the power battery charging process;

[0068] A target current determination module is used to determine the target current based on the battery charging current and the total output current;

[0069] A target temperature determination module is used to obtain a target temperature corresponding to a target current. The target temperature is the minimum temperature of the power battery required to ensure that the output of the power battery is not less than the target current under a preset SOC threshold.

[0070] A heating start temperature determination module is used to determine the heating start temperature according to the target temperature;

[0071] The power battery heating control module is used to heat the power battery if the power battery temperature is lower than the heating start temperature.

[0072] The battery recharge current is the real-time recharge current of the power battery when recharging the battery, or a preset recharge current threshold, which is the maximum value of the real-time recharge current at room temperature. The real-time recharge current of the power battery when recharging the battery can be pre-measured at room temperature to obtain a large amount of real-time recharge current data, and the maximum value of all real-time recharge currents is selected as the preset recharge current threshold. The total output current of the power battery to each component includes the total output current of the power battery to each high-voltage component and the total output current of the power battery to each low-voltage component.

[0073] The target current determination module can be specifically used to: determine the target current as the sum of the battery charging current, the total output current of the power battery to each component and the preset current, the preset current is such as 1A; it can also be specifically used to: determine the target current as the sum of the battery charging current and the total output current of the power battery to each component.

[0074] Among them, the preset SOC threshold is the minimum SOC of the power battery that ensures that smart charging can be triggered, for example, 10%; the smart charging mode will be allowed only when the SOC of the power battery is not lower than the preset SOC threshold; the smart charging mode will not be allowed when the SOC of the power battery is lower than the preset SOC threshold. The application scenario of this embodiment is that the SOC of the power battery is not lower than the preset SOC threshold. When the SOC of the power battery is fixed, the higher the temperature of the power battery, the stronger the output capacity of the power battery; the lower the temperature of the power battery, the weaker the output capacity of the power battery. When the temperature of the power battery is fixed, the greater the SOC of the power battery, the stronger the output capacity of the power battery; the smaller the SOC of the power battery, the weaker the output capacity of the power battery. When the SOC of the power battery is at the preset SOC threshold, if the temperature of the power battery is higher than the minimum temperature of the power battery, the output of the power battery can reach the target current; if the temperature of the power battery is lower than the minimum temperature of the power battery, the output of the power battery cannot reach the target current. This embodiment pre-measures the target temperatures required to achieve various target currents when the power battery's SOC is at a preset SOC threshold. Once the target current is determined, the corresponding target temperature can be directly found. It should be understood that if the power battery temperature is above the target temperature, the power battery's output can simultaneously meet the needs of various components and the battery's recharge, regardless of the power battery's SOC at any value above the preset SOC threshold. For example, if the preset SOC threshold is 10%, the minimum power battery temperature required to ensure the power battery output can achieve a certain target current is -23°C, meaning the target temperature corresponding to a certain target current is -23°C.

[0075] The heating start temperature determination module can be specifically used to: determine the heating start temperature as the target temperature; and can also be specifically used to: determine the heating start temperature as the sum of the target temperature and a preset temperature, and the preset temperature can be in the range of 3-5°C.

[0076] If the power battery temperature is higher than the heating start-up temperature, it means that the power battery output can simultaneously meet the needs of various components and battery charging, and the power battery heating control module does not need to heat the power battery. If the power battery temperature is lower than the heating start-up temperature, it means that the power battery output cannot simultaneously meet the needs of various components and battery charging, and the power battery heating control module needs to heat the power battery to improve the power battery's output capacity.

[0077] As can be seen from the above, the power battery heating control device of this embodiment determines the target current according to the battery charging current and the total output current of the power battery to each component during the process of the power battery replenishing the battery, obtains the target temperature corresponding to the target current, and determines the heating start temperature according to the target temperature. If the power battery temperature is lower than the heating start temperature, the power battery is heated, which is equivalent to not heating the power battery when the power battery temperature is higher than the heating start temperature. The power battery temperature higher than the heating start temperature indicates that the output of the power battery can simultaneously meet the charging needs of various components and the battery. In this way, while ensuring the smooth progress of intelligent charging, the energy consumption of power battery heating is reduced, thereby reducing the energy consumption of the entire vehicle.

[0078] In this embodiment, when the target current is the sum of the battery charging current and the total output current of the power battery to each component, it can be divided into the following cases:

[0079] Case 1: The battery charging current is the real-time charging current when the power battery is charging the battery, and the heating start temperature is the target temperature. In this case, under critical conditions such as when the power battery temperature is slightly higher than the heating start temperature and the power battery SOC is at the preset SOC threshold, the power battery output may not reach the target current at this power battery temperature due to a calibration error of the target temperature. If the power battery is not heated, the power battery will not be able to meet the battery charging needs.

[0080] Case 2: The battery charging current is at the preset charging current threshold, and the heating start temperature is the target temperature. In this case, the real-time charging current may be lower than the preset charging current threshold. The target current determined in this way should be greater than the actual current requirements of various components and battery charging. The target current has a certain degree of redundancy. In case 1, the power battery may be heated only after the power battery temperature drops below -23°C. In case 2, the power battery can be heated when the power battery temperature drops below -20°C. Although the power battery output may be sufficient to meet the charging needs of various components and the battery when the power battery temperature is between -20-23°C, which may cause unnecessary heating of the power battery, it is beneficial to ensure smooth battery charging.

[0081] Case 3: The battery charging current is the real-time charging current when the power battery is charging the storage battery, and the heating start temperature is the sum of the target temperature and the preset temperature. In this case, the heating start temperature is higher than the target temperature, and the heating start temperature has a certain degree of redundancy. As in Case 2, in some cases, unnecessary heating of the power battery may be caused, but it is beneficial to ensure smooth battery charging.

[0082] Case 4: The battery charging current is the preset charging current threshold, and the heating start-up temperature is the sum of the target temperature and the preset temperature. In this case, the real-time charging current may be lower than the preset charging current threshold. The target current determined in this way must be greater than the actual current requirements of each component and the battery charging. The target current has a certain redundancy, and the heating start-up temperature is greater than the target temperature. The heating start-up temperature has a certain redundancy, which is more conducive to ensuring the smooth progress of battery charging.

[0083] Based on the same inventive concept as the power battery heating control method described above, this embodiment also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, the steps of any one of the power battery heating control methods described above are implemented.

[0084] Among them, the bus architecture (represented by the bus), the bus can include any number of interconnected buses and bridges, and the bus links together various circuits including one or more processors represented by the processor and memory represented by the memory. The bus can also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are all well known in the art and therefore will not be described further herein. The bus interface provides an interface between the bus and the receiver and transmitter. The receiver and transmitter can be the same component, namely a transceiver, which provides a unit for communicating with various other devices on a transmission medium. The processor is responsible for managing the bus and general processing, while the memory can be used to store data used by the processor when performing operations.

[0085] Since the electronic device described in this embodiment is used to implement the power battery heating control method in the embodiment of the present invention, those skilled in the art will be able to understand the specific implementation and various variations of the electronic device in this embodiment based on the power battery heating control method described in the embodiment of the present invention. Therefore, how the electronic device implements the method in the embodiment of the present invention will not be described in detail here. As long as those skilled in the art can implement the electronic device used in the power battery heating control method in the embodiment of the present invention, it falls within the scope of protection of the present invention.

[0086] Based on the same inventive concept as the above-mentioned power battery heating control method, the present invention also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it implements any of the above-mentioned power battery heating control methods.

[0087] It will be understood by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Thus, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0088] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as combinations of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowcharts and / or block diagrams. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0089] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0090] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0091] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0092] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A power battery heating control method, characterized in that: include: During the process of the power battery charging the storage battery, the power battery temperature, the battery charging current, and the total output current of the power battery to each component are obtained; the battery charging current is the real-time charging current when the power battery is charging the battery, or a preset charging current threshold, and the preset charging current threshold is the maximum value of the real-time charging current at normal temperature; Determining the sum of the battery charging current and the total output current as the target current; Obtaining a target temperature corresponding to the target current, where the target temperature is a minimum temperature of the power battery required to ensure that the output of the power battery is not lower than the target current under a preset SOC threshold; determining a heating start temperature according to the target temperature; If the temperature of the power battery is lower than the heating start temperature, the power battery is heated.

2. The power battery heating control method according to claim 1, characterized in that: The preset SOC threshold is 10%.

3. The power battery heating control method according to claim 1, characterized in that: The step of determining the heating start temperature according to the target temperature includes: The heating start temperature is determined to be the target temperature.

4. The power battery heating control method according to claim 1, characterized in that: The step of determining the heating start temperature according to the target temperature includes: The heating start temperature is determined to be the sum of the target temperature and a preset temperature.

5. The power battery heating control method according to claim 4, characterized in that: The preset temperature range is 3-5°C.

6. A power battery heating control device, characterized in that: include: a charging data acquisition module, configured to acquire the power battery temperature, the battery charging current, and the total output current of the power battery to various components during the process of the power battery charging the storage battery; the battery charging current is the real-time charging current when the power battery is charging the storage battery, or a preset charging current threshold, wherein the preset charging current threshold is the maximum value of the real-time charging current at room temperature; a target current determination module, configured to determine the sum of the battery charging current and the total output current as the target current; a target temperature determination module, configured to obtain a target temperature corresponding to the target current, wherein the target temperature is a minimum temperature of the power battery required to ensure that the output of the power battery is not lower than the target current under a preset SOC threshold; A heating start temperature determination module, configured to determine the heating start temperature according to the target temperature; The power battery heating control module is configured to heat the power battery if the power battery temperature is lower than the heating start-up temperature.

7. An electronic device, characterized in that: The invention comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the power battery heating control method according to any one of claims 1 to 5 is implemented.

8. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by the processor, the power battery heating control method according to any one of claims 1 to 5 is implemented.

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