Control method of vehicle, electronic device, and vehicle

Abstract

This application provides a vehicle control method, a vehicle, and an electronic device. By connecting the on-board charger and the power battery to the DC bus of the motor controller, the bus capacitor of the motor controller can be reused to suppress the power frequency ripple of the on-board charger, reducing the impact of power frequency ripple on the vehicle. When the on-board charger meets the charging conditions, the battery temperature of the power battery is monitored in real time. When the battery temperature is within a preset temperature range, the power battery is controlled to connect to the high-voltage system, and the output power of the on-board charger and the operating power of the heating components are adjusted. This allows the power battery to cycle through charging and discharging with the power frequency ripple generated by the on-board charger, utilizing the power frequency ripple to achieve self-heating of the power battery, enhancing the heating efficiency of the power battery in low-temperature environments, and effectively improving the charging efficiency of the power battery in low-temperature environments.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a vehicle control method, electronic equipment, and vehicle. Background Technology

[0002] Currently, the new energy vehicle industry is developing rapidly, and research on power batteries is also becoming increasingly in-depth. The power batteries used in new energy vehicles need to be charged by converting AC power from the power grid to DC power through an on-board charger. The connection between the on-board charger and the power battery exhibits power frequency ripple at twice the grid frequency, affecting the lifespan of the power battery and also impacting other components of the vehicle. Summary of the Invention This application provides a vehicle control method, electronic device, and vehicle, aiming to reduce the impact of power frequency ripple on the vehicle.

[0003] This application provides a method for controlling a vehicle, the vehicle including a high-voltage system, the high-voltage system including a power battery, an on-board charger, a motor controller, a heating element, and a high-voltage component, the power battery being connected to the on-board charger, the motor controller, the heating element, and the high-voltage component, the on-board charger being connected to the DC bus of the motor controller; the control method includes: When the on-board charger meets the charging conditions, the battery temperature of the power battery is monitored in real time. When the battery temperature is within a preset temperature range, the power battery is connected to the high-voltage system. Adjusting the output power of the on-board charger and the operating power of the heating component allows the power battery to cycle through charging and discharging to achieve self-heating of the power battery.

[0004] In this embodiment, by connecting the on-board charger and the power battery to the DC bus of the motor controller, the bus capacitor of the motor controller can be reused to suppress the power frequency ripple of the on-board charger, reducing the impact of the power frequency ripple on the vehicle. When the on-board charger meets the charging conditions, the battery temperature of the power battery is monitored in real time. When the battery temperature is within the preset temperature range, the power battery is controlled to connect to the high-voltage system, and the output power of the on-board charger and the operating power of the heating components are adjusted. This allows the power battery to cycle through charging and discharging with the power frequency ripple generated by the on-board charger, using the power frequency ripple to achieve self-heating of the power battery, enhancing the heating efficiency of the power battery in low-temperature environments, and effectively improving the charging efficiency of the power battery in low-temperature environments.

[0005] In one embodiment, the control method further includes: When the battery temperature is lower than a first preset temperature, the power battery is controlled to disconnect from the high voltage system; wherein, the first preset temperature is less than or equal to the lower limit of the preset temperature range; The on-board charger is controlled to output a first power according to the withstand power of the heating component, so as to supply power to the heating component and the high-voltage component; wherein, the heating component is used to heat the power battery.

[0006] In this embodiment, when the battery temperature is below a first preset temperature, the power battery is in a state where it cannot be charged. At this time, disconnecting the power battery from the high-voltage system can prevent the power battery from continuously discharging to the high-voltage system, thus preventing the battery charge from continuously decreasing. Simultaneously, controlling the on-board charger to output a first power according to the heating component's withstand power output to power the heating component and the high-voltage component can prevent the heating component from being subjected to high-power surges, ensure the normal operation of the vehicle's high-voltage components in low-temperature environments, and allow the power battery to regain its charging capability by heating the power battery through the heating component.

[0007] In one embodiment, the control method further includes: When the battery temperature is higher than the second preset temperature, the on-board charger is controlled to charge the power battery; wherein the second preset temperature is greater than or equal to the upper limit of the preset temperature range.

[0008] When the battery temperature exceeds the second preset temperature, the power battery resumes its normal charging capacity, at which point the on-board charger can be controlled to charge the power battery. It can be understood that the charging power of the on-board charger at this time is greater than the output power of the on-board charger when the battery temperature is within the preset temperature range, in order to achieve rapid charging of the power battery.

[0009] In one embodiment, the control method further includes: When the battery charge of the power battery is greater than or equal to a preset charge threshold, the output power of the on-board charger is reduced.

[0010] When the battery charge is greater than or equal to the preset charge threshold, it means that the battery charge is about to be fully charged. At this time, the battery's ability to absorb power frequency ripple decreases, so the output power of the on-board charger is reduced to reduce power frequency ripple and charge the battery with low power. This prevents the on-board charger from outputting too much power, which could cause power frequency ripple to damage the battery and other high-voltage components.

[0011] In one embodiment, after controlling the output power of the on-board charger to decrease when the battery charge of the power battery is greater than or equal to a preset charge threshold, the control method further includes: The charging current of the on-board charger is acquired in real time; Obtain the current ripple of the charging current; When the current ripple is greater than the target ripple, the output power is reduced until the current ripple is less than or equal to the target ripple.

[0012] In this embodiment, after the battery charge is greater than or equal to a preset charge threshold, the current ripple of the charging current is acquired in real time. When the current ripple is greater than the target ripple, the output power of the on-board charger is reduced until the current ripple is less than or equal to the target ripple, so as to ensure that the output power of the on-board charger is reduced to the point that the power frequency ripple is below the tolerance value of the power battery at this time, thereby further ensuring the charging safety of the power battery when charging at low power.

[0013] In one embodiment, adjusting the output power of the on-board charger and the operating power of the heating component includes: The battery level of the power battery is acquired in real time; When the battery charge decreases, the output power is increased and the operating power is adjusted.

[0014] In this embodiment, when the battery charge decreases, the output power of the on-board charger is increased and the operating power of the heating component is adjusted to charge the power battery, thereby increasing the battery charge. This ensures that the battery charge does not decrease while maintaining the stable operation of the heating component to heat the power battery, preventing the power battery from decreasing due to self-heating during cyclic charging and discharging.

[0015] A second aspect of this application provides an electronic device, including a processor and a memory, wherein... Memory, used to store computer programs; The processor is used to execute the program stored in memory to implement the method described above.

[0016] A third aspect of this application provides a vehicle including a high-voltage system and a controller. The high-voltage system includes a power battery, an on-board charger, a motor controller, a heating element, and a high-voltage component. The power battery is connected to the on-board charger, the motor controller, the heating element, and the high-voltage component. The on-board charger is connected to the DC bus of the motor controller. The controller is connected to the power battery, the on-board charger, and the high-voltage component. The controller is used to execute the control method described above.

[0017] In one embodiment, the motor controller and the on-board charger are disposed on the first side of the power battery, and the heating component and other high-voltage components are disposed on the second side of the power battery.

[0018] In one embodiment, the motor controller is integrated with the on-board charger.

[0019] A fourth aspect of this application provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the method described above. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a vehicle module provided in one embodiment of this application; Figure 2 This is a schematic diagram of a vehicle module provided in another embodiment of this application; Figure 3 This is a schematic flowchart of a vehicle control method provided in an embodiment of this application; Figure 4 This is a schematic flowchart of a vehicle control method provided in another embodiment of this application; Figure 5 This is a schematic flowchart of a vehicle control method provided in another embodiment of this application; Figure 6 yes Figure 5 Detailed flowchart of step S70; Figure 7 yes Figure 3 Detailed flowchart of step S30; Figure 8 This is a structural diagram of the electronic device provided in the embodiments of this application. Detailed Implementation

[0021] To make the technical problems, technical solutions, and beneficial effects solved by this application clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0022] The relevant terms used in this application are explained as follows: Power battery: Provides power to high-voltage components in a vehicle.

[0023] Battery Management System (BMS): The controller for the vehicle's power battery, capable of monitoring the battery's status and controlling the on / off state of the main relays. The BMS supports network management functions (supporting wake-up and sleep mechanisms via specific CAN signals) and communicates with other components via CAN.

[0024] On-board charger (OBC): A charger fixed on the vehicle, capable of fully charging the vehicle's battery. The OBC supports network management functions (supports wake-up and sleep mechanisms via specific CAN signals) and communicates with other components via CAN.

[0025] PTC heating element: Used to heat the power battery in a vehicle in low-temperature environments.

[0026] High-voltage distribution unit (PDU): As the distribution hub for the vehicle's high-voltage electricity, it integrates high-voltage relays, fuses, and communication chips to safely distribute electrical energy and ensure system overload protection.

[0027] Vehicle Controller (VCU): A crucial component for various vehicle strategy decisions, fault handling, and command transmission. The control methods described in this application can also be executed by the VCU. The VCU supports network management functions (supporting wake-up and sleep mechanisms via specific CAN signals) and can communicate with other components via CAN.

[0028] Display instrument: It can display various vehicle statuses, support network management functions, and communicate with other components via CAN.

[0029] Please refer to Figure 1 , Figure 1 This is a schematic diagram of a vehicle 100 provided in an embodiment of this application. Figure 1 As shown, vehicle 100 includes a high-voltage system (not labeled), which includes a power battery 110, an on-board charger 120, a motor controller 130, a heating element 140, and a high-voltage component 150. The power battery 110 is connected to the on-board charger 120, the motor controller 130, the heating element 140, and the high-voltage component 150. The on-board charger 120 is connected to the DC bus of the motor controller 130. Thus, when the on-board charger 120 is connected to the AC power grid, the bus capacitor of the motor controller 130 can be reused to suppress the power grid frequency ripple, reducing the impact of power frequency ripple on the power battery 110 and the high-voltage component 150.

[0030] The high-voltage components 150 may include an air conditioning compressor, a DC-DC converter, a high-voltage distribution box, etc., and each high-voltage component 150 is connected to the power battery 110 so that the power battery 110 provides high-voltage electricity. It can be understood that the on-board charger 120, the motor controller 130, and the heating component 140 are also part of the high-voltage components 150 of the vehicle 100.

[0031] The power battery 110 includes a battery module 111, a battery management system 120, a main positive relay K1, a main negative relay K2, a pre-charge relay K3, and a pre-charge resistor R1. The positive terminal of the battery module 111 is connected to one end of the on-board charger 120, the heating element 140, and each high-voltage component 150 via the main positive relay K1. The negative terminal of the battery module 111 is connected to the other end of the on-board charger 120, the heating element 140, and each high-voltage component 150 via the main negative relay K2. The pre-charge relay K3 and the pre-charge resistor R1 are connected in series and then in parallel with the main positive relay K1. The battery management system 120 is connected to the main positive relay K1, the main negative relay K2, and the pre-charge relay K3 to control their on / off states. The battery management system 120 can also be used to detect electrical parameters of the battery module 111, such as battery charge and battery voltage. It is understandable that a fuse can be installed between the battery module 111 and the main positive relay K1 to prevent excessive battery current from damaging the battery module 111 or other components.

[0032] In some embodiments, the vehicle 100 further includes a low-voltage system (not shown), which includes a plurality of low-voltage devices (not shown). The high-voltage system may also include a DC-DC converter (not shown), which may be connected between the plurality of low-voltage devices and the power battery 110, so that the power battery 110 can convert high voltage to low voltage through the DC-DC converter to power the low-voltage devices.

[0033] In this embodiment of the application, the low-voltage devices may include at least a vehicle controller, ignition (starting device), display instrument, lighting system, central control system, etc.

[0034] In some embodiments, the motor controller 130 and the on-board charger 120 are disposed on the first side of the power battery 110, and the heating component 140 and other high-voltage components 150 are disposed on the second side of the power battery 110. This close proximity of the motor controller 130 and the on-board charger 120 facilitates the reuse of the bus capacitor of the motor controller 130 by the on-board charger 120, and further improves the suppression of power grid frequency ripple.

[0035] like Figure 2 As shown, in some embodiments, the motor controller 130 and the on-board charger 120 can be integrated. In this way, the on-board charger 120 can directly reuse the bus capacitor C1 of the motor controller 130, which can further improve the suppression effect of power grid frequency ripple, reduce the cost of the vehicle 100, and improve installation efficiency.

[0036] Furthermore, the motor controller 130, on-board charger 120, high-voltage distribution box, DC converter, motor, gearbox and other high-voltage components 150 can be integrated to form an electric drive multi-integrated system, which can further reduce the cost of vehicle 100 and improve installation efficiency.

[0037] Please see Figure 3 , Figure 3 A schematic flowchart of a vehicle control method provided in an embodiment of this application is shown. In at least one embodiment, the control method can be executed by a vehicle controller in the vehicle 100. In other embodiments, the control method can also be executed by a battery management system 120.

[0038] like Figure 3 As shown, the control method provided in this application embodiment may include the following steps: Step S10: When the on-board charger meets the charging conditions, monitor the battery temperature of the power battery in real time.

[0039] The vehicle controller can monitor the battery temperature of the power battery 110 in real time when the on-board charger 120 meets the charging conditions. The charging conditions of the on-board charger 120 may include: detecting grid connection to the on-board charger 120 (e.g., the charging gun is inserted into the on-board charger 120, or a charging signal indicating grid connection is detected, etc.).

[0040] Step S20: When the battery temperature is within the preset temperature range, control the power battery to connect to the high-voltage system.

[0041] Within a preset temperature range, the power battery 110 has a certain charging capability, meaning it can be charged, but the charging current it can receive is low, making fast charging impossible. In the field of new energy vehicles, lithium-ion batteries are the most widely used type of power battery 110. Lithium-ion batteries are easily affected by temperature, especially in low-temperature environments, where their internal resistance increases significantly, impacting both charging and discharging efficiency. Therefore, the preset temperature range can be set according to the performance of the power battery 110, for example, it can be set to -10℃~20℃, -20℃~15℃, etc.

[0042] In this embodiment, the vehicle controller can connect the power battery 110 to the high-voltage system by controlling the main positive relay K1 and the main negative relay K2 to conduct. It can be understood that the vehicle controller can send a conduction signal to the battery management system 120, and the battery management system 120 can then control the main positive relay K1 and the main negative relay K2 to conduct according to the conduction signal.

[0043] Step S30: Adjust the output power of the on-board charger and the operating power of the heating component to enable the power battery to cycle through charging and discharging to achieve self-heating of the power battery.

[0044] By adjusting the output power of the on-board charger 120 and the operating power of the heating component 140, the power battery 110 can continuously operate in charging and discharging conditions following the power frequency ripple generated by the on-board charger 120. This allows the power battery 110 to achieve self-heating and heating function of the heating component 140 by utilizing the heat generated by the internal resistance during the charging and discharging process. This enables the power battery 110 to heat up rapidly.

[0045] In this embodiment, the vehicle controller can increase the output power of the on-board charger 120 and adjust the operating power of the heating component 140 to enable the power battery 110 to cycle through charging and discharging. It is understood that increasing the output power of the on-board charger 120 increases the power frequency ripple generated by the on-board charger 120, thereby increasing the heat generated inside the power battery 110. The operating power of the heating component 140 can be adjusted according to its power tolerance.

[0046] In this embodiment, by connecting the connection terminal of the on-board charger 120 and the power battery 110 to the DC bus of the motor controller 130, the bus capacitor C1 of the motor controller 130 can be reused to suppress the power frequency ripple of the on-board charger 120, reducing the impact of the power frequency ripple on the vehicle 100. When the on-board charger 120 meets the charging conditions, the battery temperature of the power battery 110 is monitored in real time. When the battery temperature is within the preset temperature range, the power battery 110 is controlled to connect to the high-voltage system, and the output power of the on-board charger 120 and the operating power of the heating component 140 are adjusted, so that the power battery 110 can cycle through charging and discharging with the power frequency ripple generated by the on-board charger 120. The power frequency ripple is used to achieve self-heating of the power battery 110, enhancing the heating efficiency of the power battery 110 in low-temperature environments and effectively improving the charging efficiency of the power battery 110 in low-temperature environments.

[0047] In some embodiments, such as Figure 4 As shown, the control method may further include the following steps: Step S40: When the battery temperature is lower than the first preset temperature, control the power battery to disconnect from the high voltage system.

[0048] The first preset temperature is less than or equal to the lower limit of the preset temperature range. For example, when the preset temperature range is -10℃ to 20℃, the first preset temperature is less than -10℃, and the first preset temperature can be set to -12℃, -15℃, etc.; when the preset temperature range is -20℃ to 15℃, the first preset temperature is less than -20℃, and the first preset temperature can be set to -22℃, -25℃, etc. When the battery temperature is lower than the first preset temperature, the power battery 110 is in a state where it cannot be charged. At this time, disconnecting the power battery 110 from the high-voltage system can prevent the power battery 110 from discharging to the high-voltage system and causing the charge to continue to decrease.

[0049] Step S50: Control the on-board charger to output the first power according to the heating component's withstand power, so as to supply power to the heating component and the high-voltage component.

[0050] The heating element 140 is used to heat the power battery 110. When the battery temperature is lower than a first preset temperature, the on-board charger 120 is controlled to output a first power according to the withstand power of the heating element 140 to supply power to the heating element 140 and the high-voltage component 150, thus preventing the heating element 140 from being subjected to high-power surges. Therefore, it is possible to ensure the normal operation of other high-voltage components 150 of the vehicle 100 in low-temperature environments, and also to heat the power battery 110 and ensure the normal operation of the heating element 140, enabling the power battery 110 to regain its charging capacity. In this embodiment, the withstand power of the heating element 140 can be obtained in advance through testing and stored in the vehicle controller.

[0051] like Figure 5 As shown, in some embodiments, the control method may further include: Step S60: When the battery temperature is higher than the second preset temperature, control the on-board charger to charge the power battery.

[0052] The second preset temperature is greater than or equal to the upper limit of the preset temperature range. When the battery temperature is higher than the second preset temperature, the power battery 110 resumes its normal charging capability. At this time, the vehicle controller can control the on-board charger 120 to charge the power battery 110. It can be understood that the charging power of the on-board charger 120 to the power battery 110 at this time is greater than the output power of the on-board charger 120 when the battery temperature is within the preset temperature range, thus enabling fast charging of the power battery 110.

[0053] Furthermore, the control methods may also include: Step S70: When the battery charge of the power battery is greater than or equal to a preset charge threshold, control the output power of the on-board charger to decrease.

[0054] When the battery charge of the power battery 110 is low, the output power of the on-board charger 120 is high, resulting in a large power frequency ripple. At this time, the power battery 110 can absorb the power frequency ripple. When the on-board charger 120 charges the power battery 110 to a level greater than a preset charge threshold, it indicates that the power battery 110 is about to be fully charged. The power battery 110's ability to absorb power frequency ripple decreases. Therefore, the vehicle controller can control the output power of the on-board charger 120 to reduce the power frequency ripple and charge the power battery 110 at a low power to prevent the output power of the on-board charger 120 from being too high, which could cause the power frequency ripple to damage the power battery 110 and other high-voltage components 150.

[0055] In this embodiment, the vehicle controller can reduce the output power of the on-board charger 120 based on the tolerance value of the power battery 110 to power frequency ripple when the battery charge of the power battery 110 reaches a preset charge threshold. The tolerance value of the power battery 110 to power frequency ripple can be obtained in advance through testing and stored in the vehicle controller.

[0056] like Figure 6 As shown, in some embodiments, after step S70, the control method may further include: Step S71: Obtain the charging current of the on-board charger in real time.

[0057] Step S72: Obtain the current ripple of the charging current.

[0058] Step S73: When the current ripple is greater than the target ripple, control the output power to decrease until the current ripple is less than or equal to the target ripple.

[0059] When the battery capacity of the power battery 110 reaches a preset capacity threshold, the vehicle controller requests the on-board charger 120 to reduce its output power. The vehicle controller can then acquire the charging current of the on-board charger 120 in real time and calculate the current ripple. If the current ripple exceeds a target ripple, the controller requests the on-board charger 120 to reduce its output power again until the current ripple is reduced to the target ripple. The on-board charger 120 then uses the reduced output power to charge the power battery 110 at a low power until the battery is fully charged. The target ripple is set based on the power battery 110's tolerance value for power frequency ripple when the battery capacity reaches the preset capacity threshold. This ensures that after the power battery 110 reaches the preset capacity threshold, the output power of the on-board charger 120 is reduced to a level that keeps the power frequency ripple below the power battery 110's tolerance value at that time, further guaranteeing the charging safety of the power battery 110 during low-power charging.

[0060] like Figure 7As shown, in some embodiments, step S30 may include: Step S31: Obtain the battery power of the power battery in real time.

[0061] The vehicle controller can communicate with the battery management system 120 when it detects that the battery temperature is within a preset temperature range to obtain the battery charge of the power battery 110 at that time.

[0062] Step S32: When the battery power decreases, control the output power to increase and adjust the operating power.

[0063] In this embodiment, when the battery charge decreases, the output power of the on-board charger 120 is increased to charge the power battery 110, thereby increasing the battery charge and maintaining the battery charge of the power battery 110. The vehicle controller can obtain and compare the battery charge at two different times to confirm whether the battery charge has decreased. If the battery charge at the previous time is greater than the battery charge at the next time, it indicates that the battery charge has decreased. If the battery charge at the previous time is less than or equal to the battery charge at the next time, it indicates that the battery charge has not decreased. When the vehicle controller increases the output power of the on-board charger 120, it can also adjust the operating power of the heating component 140, ensuring that the heating component 140 maintains stable operation while heating the power battery 110, thus maintaining the battery charge. In this embodiment, maintaining the battery charge is used as a feedback target for the self-heating process of the power battery 110. This allows the power battery 110 to heat up according to the power frequency ripple during cyclic charging and discharging, while maintaining the battery charge and preventing a decrease in charge due to self-heating during cyclic charging and discharging.

[0064] This application embodiment also provides a vehicle 100, including a high-voltage system and a controller. The high-voltage system includes a power battery 110, an on-board charger 120, a motor controller 130, a heating element 140, and a high-voltage component 150. The power battery 110 is connected to the on-board charger 120, the motor controller 130, the heating element 140, and the high-voltage component 150. The on-board charger 120 is connected to the DC bus of the motor controller 130. The controller is connected to the power battery 110, the on-board charger 120, and the high-voltage component 150, and is used to execute the control method described above.

[0065] This application also provides an electronic device, please refer to... Figure 8 It includes a processor 210 and a memory 220, wherein the memory 210 is used to store computer programs; the processor 220 is used to execute the programs stored in the memory 210 to implement the control method described in any embodiment of this application.

[0066] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the control method described in any embodiment of this application.

[0067] In this application, "multiple" refers to two or more.

[0068] In this application, unless otherwise expressly defined, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0069] The terms “first,” “second,” “third,” “fourth,” etc., in this application (if present) are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0070] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0071] Unless otherwise specified, all steps in this application may be performed sequentially or randomly. For example, if a method includes steps A and B, it means that the method may include steps A and B performed sequentially, or it may include steps B and A performed sequentially. For example, if a method may also include step C, it means that step C may be added to the method in any order. For example, the method may include steps A, B, and C, or it may include steps A, C, and B, or it may include steps C, A, and B, etc.

[0072] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A vehicle control method, the vehicle comprising a high-voltage system, the high-voltage system comprising a power battery, an on-board charger, a motor controller, a heating element, and a high-voltage component, the power battery being connected to the on-board charger, the motor controller, the heating element, and the high-voltage component, the on-board charger being connected to the DC bus of the motor controller; characterized in that, The control method includes: When the on-board charger meets the charging conditions, the battery temperature of the power battery is monitored in real time. When the battery temperature is within a preset temperature range, the power battery is connected to the high-voltage system. Adjusting the output power of the on-board charger and the operating power of the heating component allows the power battery to cycle through charging and discharging to achieve self-heating of the power battery.

2. The control method according to claim 1, characterized in that, The control method further includes: When the battery temperature is lower than a first preset temperature, the power battery is controlled to disconnect from the high voltage system; wherein, the first preset temperature is less than or equal to the lower limit of the preset temperature range; The on-board charger is controlled to output a first power according to the withstand power of the heating component, so as to supply power to the heating component and the high-voltage component; wherein, the heating component is used to heat the power battery.

3. The control method according to claim 1, characterized in that, The control method further includes: When the battery temperature is higher than the second preset temperature, the on-board charger is controlled to charge the power battery; wherein the second preset temperature is greater than or equal to the upper limit of the preset temperature range.

4. The method according to claim 3, characterized in that, The control method further includes: When the battery charge of the power battery is greater than or equal to a preset charge threshold, the output power of the on-board charger is reduced.

5. The method according to claim 4, characterized in that, After controlling the output power of the on-board charger to decrease when the battery charge of the power battery is greater than or equal to a preset charge threshold, the control method further includes: The charging current of the on-board charger is acquired in real time; Obtain the current ripple of the charging current; When the current ripple is greater than the target ripple, the output power is reduced until the current ripple is less than or equal to the target ripple.

6. The method according to any one of claims 1 to 5, characterized in that, Adjusting the output power of the on-board charger and the operating power of the heating component includes: The battery level of the power battery is acquired in real time; When the battery charge decreases, the output power is increased and the operating power is adjusted.

7. An electronic device, characterized in that, Including processor and memory, among which Memory, used to store computer programs; A processor for executing a program stored in memory to implement the control method according to any one of claims 1 to 6.

8. A vehicle, characterized in that, The system includes a high-voltage system and a controller. The high-voltage system includes a power battery, an on-board charger, a motor controller, a heating element, and a high-voltage component. The power battery is connected to the on-board charger, the motor controller, the heating element, and the high-voltage component. The on-board charger is connected to the DC bus of the motor controller. The controller is connected to the power battery, the on-board charger, and the high-voltage component. The controller is used to execute the control method according to any one of claims 1 to 6.

9. The vehicle according to claim 8, characterized in that, The motor controller and the on-board charger are located on the first side of the power battery, and the heating component and other high-voltage components are located on the second side of the power battery.

10. The vehicle according to claim 8, characterized in that, The motor controller is integrated with the on-board charger.

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