Battery heating method and device, vehicle and computer readable storage medium

Abstract

The embodiment of the invention provides a battery heating method and device, a vehicle and a computer readable storage medium, and relates to the technical field of automobile electronic appliances. Whether the current function state of the battery meets the intelligent driving mode starting condition of the vehicle or not is detected; and when the current functional state of the battery does not meet the intelligent driving mode starting condition of the vehicle, the battery is heated. The discharging capacity of the battery can be improved, the function state of the battery can meet the intelligent driving mode starting condition, it is ensured that the vehicle can start the intelligent driving mode for use at any time, and the user experience is improved.

Description

Technical Field

[0001] The present application relates to the field of automotive electronic and electrical technology, and more specifically, to a battery heating method, device, vehicle, and computer-readable storage medium. Background Art

[0002] Electric vehicles or hybrid vehicles are equipped with 12V batteries (such as 12V storage batteries or 12V lithium batteries), which are used to power the low-voltage system of the entire vehicle. Under low temperature conditions, the discharge performance of the 12V battery is poor and cannot meet the power demand of the entire vehicle. In particular, L4 unmanned autonomous driving vehicles cannot meet the requirements of turning on the autonomous driving function under low temperature conditions due to the reduced discharge performance of the 12V battery, resulting in the inability to use the autonomous driving function, resulting in a poor user experience. Summary of the invention

[0003] The embodiments of the present application propose a battery heating method, device, vehicle and computer-readable storage medium to solve the above-mentioned technical problems.

[0004] In a first aspect, an embodiment of the present application provides a battery heating method, the method comprising: detecting whether a current functional state of the battery meets a condition for starting a smart driving mode of the vehicle; and heating the battery when the current functional state of the battery does not meet the condition for starting a smart driving mode of the vehicle.

[0005] In a second aspect, an embodiment of the present application provides a battery heating device, which includes: a status monitoring module, used to detect whether the current functional status of the battery meets the conditions for starting the vehicle's intelligent driving mode; a battery heating module, used to heat the battery when the current functional status of the battery does not meet the conditions for starting the vehicle's intelligent driving mode.

[0006] In a third aspect, an embodiment of the present application provides an electronic device, comprising: a memory and a processor, wherein an application is stored in the memory, and the application is used to enable the processor to execute the method provided by the embodiment of the present application when called by the processor.

[0007] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium having a program code stored thereon, wherein the program code is used to enable the processor to execute the method provided by the embodiment of the present application when called by the processor.

[0008] The battery heating method provided in the embodiment of the present application has the following technical effects: detecting whether the functional status of the battery meets the conditions for starting the intelligent driving mode, and heating the battery in time when the functional status of the battery does not meet the conditions for starting the intelligent driving mode, thereby improving the discharge capacity of the battery, so that the functional status of the battery can meet the conditions for starting the intelligent driving mode, ensuring that the vehicle can start the intelligent driving mode at any time. For example, it can ensure that the functional status of the 12V lithium battery of an L4 unmanned autonomous driving vehicle at low temperatures meets the conditions for starting the intelligent driving mode at any time, so that the vehicle can use the intelligent driving mode at any time, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, not all embodiments. Based on the embodiments of the present application, all other embodiments and drawings obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0010] Figure 1 A schematic diagram of the structure of a 12V lithium battery provided in an embodiment of the present application is shown;

[0011] Figure 2 It shows that an embodiment of the present application provides Figure 1 An enlarged schematic diagram of the internal structure of a 12V lithium battery is shown;

[0012] Figure 3 A schematic diagram of a process of a battery heating method provided in an embodiment of the present application is shown;

[0013] Figure 4 A schematic diagram of the process of step S110 provided in an embodiment of the present application is shown;

[0014] Figure 5 A schematic diagram showing a flow chart of a battery heating method provided in another embodiment of the present application is shown;

[0015] Figure 6 A schematic diagram of the process of step S240 provided in an embodiment of the present application is shown;

[0016] Figure 7 A schematic diagram of the process of step S242 provided in an embodiment of the present application is shown;

[0017] Figure 8 A schematic diagram of the structure of a battery heating device provided in an embodiment of the present application is shown;

[0018] Fig. 9 A schematic structural diagram of a vehicle provided in one embodiment of the present application is shown. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0020] The battery heating method in the embodiment of the present application is used to heat the on-board 12V battery (such as a 12V storage battery or a 12V lithium battery). The battery heating method can be applied to a battery heating device or a vehicle, and the battery heating device can be integrated in the vehicle. The vehicle may include but is not limited to an electric vehicle or a hybrid vehicle. A high-low voltage conversion system is installed on the vehicle. The high-low voltage conversion system consists of a power battery pack, a DC / DC module (for high-voltage to low-voltage conversion), a 12V battery, etc. The DC / DC module is the core component for completing the high-low voltage conversion. When the vehicle starts, the low-voltage electricity is mainly powered by a 12V battery. After the power battery pack is powered on, the power battery pack inputs the high-voltage direct current to the DC / DC module through the high-voltage distribution system; the DC / DC module converts the high-voltage direct current into a low-voltage direct current to power the low-voltage electrical equipment of the entire vehicle; when it is detected that the 12V battery voltage is insufficient, the DC / DC module charges the 12V battery.

[0021] Please also read Figure 1 and Figure 2 , Figure 1 The structure diagram of a 12V lithium battery provided in one embodiment of the present application is shown. Figure 2 It shows that an embodiment of the present application provides Figure 1 The enlarged schematic diagram of the internal structure of a 12V lithium battery is shown in FIG. Figure 1 and Figure 2 As shown, taking the 12V battery as a 12V lithium battery as an example, the 12V lithium battery 100 has multiple battery cells 110 and multiple electric heating films (also called heating films) 120, and the electric heating films 120 inside the battery 100 are arranged between the battery cells 110. The battery cells 110 are used for energy storage and discharge. The electric heating film 120 is used to generate heat when powered, radiate heat to the inside of the battery 100, and drive the temperature of the battery cells 110 to rise. Since the vehicle wiring harness is connected to the battery terminal, the electric heating film can be connected to the vehicle-mounted high-voltage system (also called a high-voltage package) through the battery terminal, and there is a high-voltage to low-voltage DC / DC circuit in the closed circuit of the vehicle. The on-board battery management system can monitor the battery temperature of the 12V lithium battery (more specifically, the temperature of the battery cell 120) in real time. When the battery temperature is too low to meet the conditions for starting the intelligent driving mode, the high-voltage system is requested to close the circuit switch that powers the 12V lithium battery, and turn on the DC / DC power supply circuit of the vehicle's high-voltage system, thereby supplying power to the electric heating film 120, causing the electric heating film 120 to heat up and drive the temperature of the battery cell 110 to rise.

[0022] Next, the battery heating method in the embodiment of the present application will be introduced by taking the vehicle as an example of the execution subject. Figure 3 , Figure 3 FIG. 1 is a flow chart of a battery heating method provided by an embodiment of the present application. Figure 3 As shown, the battery heating method may include steps S110 to S120 .

[0023] Step S110: Check whether the current functional status of the battery meets the conditions for starting the vehicle's intelligent driving mode.

[0024] The battery in the embodiment of the present application refers to a low-voltage battery of the vehicle, that is, a 12V battery, such as a 12V storage battery or a 12V lithium battery.

[0025] The intelligent driving mode in the embodiments of the present application may include but is not limited to an automatic driving mode (e.g., an L4 unmanned driving mode) or an assisted driving mode. In the automatic driving mode, the vehicle can achieve unmanned automatic driving without the driver taking over the vehicle. In the assisted driving mode, the vehicle can achieve semi-automatic driving, requiring the driver to take over the vehicle, and the assisted driving mode is used to assist the driver in driving the vehicle.

[0026] The vehicle's battery management system (BMS) can detect in real time whether the battery's current state of function (SOF) meets the vehicle's smart driving mode activation conditions. For details, please refer to Figure 4 , Figure 4 FIG. 2 shows a flow chart of step S110 provided in an embodiment of the present application. Figure 4 As shown, step S110 may include steps S111 to S113.

[0027] Step S111: Detect whether the current discharge capacity of the battery meets the discharge requirements when the intelligent driving mode is turned on.

[0028] The discharge capacity of the battery is different at different times, and the discharge capacity of the battery is related to the battery temperature. For example, the discharge capacity of the battery is poor when the battery temperature is low. The discharge demand when the intelligent driving mode is turned on can be determined based on the actual vehicle performance. The vehicle's battery management system can detect the current discharge capacity of the battery and the discharge demand when the intelligent driving mode is turned on in real time or periodically, and detect whether the current discharge capacity of the battery meets the discharge demand when the intelligent driving mode is turned on.

[0029] For example, assuming that the discharge requirement for the intelligent driving mode is to require the battery's discharge capacity to reach 2000 watts in 3 minutes, if the battery's current discharge capacity can reach 2000 watts in 3 minutes, it can be determined that the battery's current discharge capacity meets the discharge requirement for the intelligent driving mode. Otherwise, it can be determined that the battery's current discharge capacity does not meet the discharge requirement for the intelligent driving mode.

[0030] Step S112: When the discharge capacity of the battery meets the discharge requirement for turning on the intelligent driving mode, determine whether the current functional state of the battery meets the conditions for turning on the intelligent driving mode of the vehicle.

[0031] When the battery's discharge capacity meets the discharge requirements for turning on the intelligent driving mode, it is determined that the battery's discharge capacity is good, and the battery's functional state is sufficient to support the functional state of turning on the intelligent driving mode. At this time, it can be determined that the battery's current functional state meets the vehicle's intelligent driving mode activation conditions.

[0032] Step S113: When the discharge capacity of the battery does not meet the discharge requirements for turning on the intelligent driving mode, it is determined that the current functional state of the battery does not meet the conditions for turning on the intelligent driving mode of the vehicle.

[0033] When the discharge capacity of the battery meets the discharge requirements for turning on the intelligent driving mode, it is determined that the discharge capacity of the battery is poor, and it is determined that the functional state of the battery is insufficient to support the functional state of turning on the intelligent driving mode. At this time, it can be determined that the current functional state of the battery meets the conditions for turning on the intelligent driving mode of the vehicle.

[0034] Step S120: When the current functional state of the battery does not meet the conditions for starting the intelligent driving mode of the vehicle, the battery is heated.

[0035] When the current functional state of the battery does not meet the conditions for activating the vehicle's intelligent driving mode, it can be determined that the low battery temperature has reduced the battery discharge capacity. The battery discharge capacity can be improved by heating the battery so that the battery's functional state can be turned on in the intelligent driving mode after the battery temperature rises, thereby ensuring that the vehicle can use the intelligent driving function at random.

[0036] like Figure 1 and Figure 2 As shown, the battery in the embodiment of the present application is provided with a battery cell and an electric heating film (also referred to as a heating film), and the electric heating film is provided between the battery cells. When the current functional state of the battery does not meet the vehicle's intelligent driving mode activation conditions, the vehicle's battery management system can request high voltage on the vehicle to power the electric heating film, so that the electric heating film generates heat to drive the temperature of the battery cell to rise.

[0037] The electric heating film is connected to the vehicle's high-voltage to low-voltage power supply circuit (i.e., DC / DC power supply circuit) through the battery terminal. When the current functional state of the battery does not meet the vehicle's intelligent driving mode activation conditions, the vehicle's battery management system requests high voltage on the entire vehicle, and can control the closure of the switch of the high-voltage to low-voltage power supply circuit, so that the vehicle's high-voltage package supplies power to the electric heating film, causing the electric heating film to heat up and drive the temperature of the battery cell to rise.

[0038] Specifically, Figure 1 and Figure 2 As shown, the battery has 4 cells, the electric heating film inside the battery is set between the cells (for energy storage and discharge), the vehicle wiring harness is connected to the battery terminal, the electric heating film is connected to the vehicle high voltage system through the battery terminal, and the vehicle closed circuit has a DC / DC circuit, which is used to convert high voltage to low voltage. The battery management system can monitor the battery temperature in real time. When the battery temperature is low, the high voltage package is requested to close the circuit switch of the battery power supply, and the DC / DC power supply circuit of the vehicle high voltage system is turned on to heat the electric heating film so that the electric heating film heats up, radiates the heat to the inside of the battery, drives the cell temperature to rise, and improves the discharge capacity of the battery cell.

[0039] In some embodiments, when the current functional state of the battery meets the conditions for starting the intelligent driving mode of the vehicle, the current functional state of the battery continues to be detected to see whether it meets the conditions for starting the intelligent driving mode of the vehicle.

[0040] Steps S110 to S120 have the following technical effects: detecting whether the functional status of the battery meets the conditions for starting the intelligent driving mode, and heating the battery in time when the functional status of the battery does not meet the conditions for starting the intelligent driving mode, thereby improving the discharge capacity of the battery, so that the functional status of the battery can meet the conditions for starting the intelligent driving mode, ensuring that the vehicle can start the intelligent driving mode at any time. For example, it can ensure that the functional status of the 12V lithium battery of an L4 unmanned autonomous driving vehicle at low temperatures meets the conditions for starting the intelligent driving mode at any time, so that the vehicle can use the intelligent driving mode at any time, thereby improving the user experience.

[0041] See also Figure 5 , Figure 5 FIG. 2 is a flow chart of a battery heating method provided by another embodiment of the present application. Figure 5 As shown, the battery heating method may include steps S210 to S240 .

[0042] Step S210: Detect whether the current functional state of the battery meets the vehicle's intelligent driving mode activation condition. For a detailed description of step S210, please refer to step S110.

[0043] Step S220: When the current functional state of the battery does not meet the vehicle's intelligent driving mode activation condition, the battery is heated. For a detailed description of step S220, please refer to step S120.

[0044] Step S230: When the current functional state of the battery meets the conditions for starting the intelligent driving mode of the vehicle, record the current battery temperature.

[0045] Heating the battery raises the battery temperature and improves the battery's discharge capacity. When the battery's current functional state meets the vehicle's intelligent driving mode activation conditions, the battery's discharge capacity is sufficient to support the discharge requirements of the intelligent driving mode. At this time, the vehicle's battery management system can record the current battery temperature so that the battery temperature can be controlled to always be greater than the battery temperature, ensuring that the vehicle can activate the intelligent driving mode at any time.

[0046] Step S240: Control the battery temperature to remain greater than the current battery temperature.

[0047] Controlling the battery temperature to remain greater than the current battery temperature can ensure that the battery's discharge capacity can always support the discharge requirements of the intelligent driving mode, ensuring that the vehicle can turn on the intelligent driving mode at any time.

[0048] Considering that an overly high battery temperature may pose a certain safety hazard, in some embodiments, the current battery temperature may be set as the lower limit of the battery temperature, and an upper limit may be set. When the battery temperature is at the lower limit, the battery is heated, and when the upper limit is reached, the heating is stopped. This cycle is repeated so that the battery temperature is always controlled to be within a temperature range greater than the current battery temperature, thereby avoiding the safety hazard caused by an overly high battery temperature and ensuring battery safety. For details, please refer to Figure 6 , Figure 6 FIG. 4 shows a flow chart of step S240 provided in an embodiment of the present application. Figure 6 As shown, step S240 may include step S241 and step S242.

[0049] Step S241: determining a temperature interval according to the current battery temperature, wherein a lower limit of the temperature interval is the current battery temperature.

[0050] The current battery temperature may be set as the lower limit value (T) of the temperature interval. A preset value (e.g., 5 degrees Celsius) may be added to the current battery temperature to obtain the upper limit value (T+5) of the temperature interval, thereby obtaining the temperature interval ([T, T+5]). The preset value may be predefined according to actual needs, and this application does not impose any specific restrictions.

[0051] Step S242: Control the battery temperature to remain within the temperature range.

[0052] In some embodiments, see Figure 7 , Figure 7 FIG. 4 shows a flow chart of step S242 provided in an embodiment of the present application. Figure 7 As shown, step S242 may include steps S2421 to S2423.

[0053] Step S2421: Monitor battery temperature.

[0054] The vehicle's battery management system can monitor the battery temperature in real time or periodically. The periodic interval should not be set too long. After starting to heat the battery, it can be determined whether the battery temperature has risen to the upper limit of the temperature range. When the upper limit of the temperature range is reached, the battery heating is stopped, and it is determined whether the battery temperature has dropped to the lower limit of the temperature range. When the battery temperature drops to the lower limit of the temperature range, the battery heating is started. This cycle is repeated to ensure that the battery temperature is always within the temperature range, ensuring that the vehicle can start the intelligent driving mode at any time while ensuring battery safety.

[0055] Step S2422: When the battery temperature is at the lower limit of the temperature range, heating the battery.

[0056] When the battery temperature is the lower limit of the temperature range, it can be determined that the battery temperature just makes the battery's discharge capacity able to support the discharge requirements of turning on the intelligent driving mode. At this time, the battery can continue to be heated to achieve the battery insulation effect, so that the battery's discharge capacity can always support the discharge requirements of turning on the intelligent driving mode, ensuring that the vehicle can use the intelligent driving mode.

[0057] Step S2423: When the battery temperature reaches the upper limit of the temperature range, stop heating the battery.

[0058] When the battery temperature reaches the upper limit of the temperature range, it can be determined that the battery temperature is sufficient to make the battery's discharge capacity able to support the discharge requirements of turning on the intelligent driving mode. If heating continues, the battery temperature may be too high, causing certain safety hazards. At this time, you can stop heating the battery, so that the battery's discharge capacity can always support the discharge requirements of turning on the intelligent driving mode, ensuring the battery safety on the basis of ensuring that the vehicle can use the intelligent driving mode.

[0059] Compared with steps S110 to S120, steps S210 to S240 additionally have the following technical effect: after heating the battery, the battery temperature is controlled to always remain greater than the battery temperature when the functional state of the battery meets the conditions for turning on the smart mode, thereby further ensuring that the vehicle can turn on the smart mode at any time and improving the user experience.

[0060] See also Figure 8 , Figure 8 FIG. 1 is a schematic diagram showing the structure of a battery heating device provided by an embodiment of the present application. The battery heating device can execute the above-mentioned battery heating method, and the battery heating device can be integrated into a vehicle. Figure 8 As shown, the battery heating device 200 may include a state monitoring module 210 and a battery heating module 220. The state monitoring module 210 is used to detect whether the current functional state of the battery meets the vehicle's intelligent driving mode activation condition. The battery heating module 220 is used to heat the battery when the current functional state of the battery does not meet the vehicle's intelligent driving mode activation condition.

[0061] In some embodiments, the battery heating module 220 is used to: when the current functional state of the battery does not meet the conditions for starting the intelligent driving mode of the vehicle, supply power to the electric heating film so that the electric heating film generates heat to drive the temperature of the battery cell to rise.

[0062] In some embodiments, the battery heating module 220 is used to: when the current functional state of the battery does not meet the conditions for starting the vehicle's intelligent driving mode, control the closure of the switch of the high-voltage to low-voltage power supply circuit so that the vehicle's high-voltage package supplies power to the electric heating film.

[0063] In some embodiments, the battery heating device 200 may further include a battery heat preservation module. The battery heat preservation module is used to: when the current functional state of the battery meets the vehicle's intelligent driving mode activation condition, record the current battery temperature; and control the battery temperature to remain greater than the current battery temperature.

[0064] In some embodiments, the battery insulation module is used to: determine a temperature range according to the current battery temperature, wherein a lower limit of the temperature range is the current battery temperature; and control the battery temperature to remain within the temperature range.

[0065] In some embodiments, the battery insulation module is used to: monitor the battery temperature; heat the battery when the battery temperature is the lower limit of the temperature range; and stop heating the battery when the battery temperature reaches the upper limit of the temperature range.

[0066] Those skilled in the art can clearly understand that the above device provided in the embodiment of the present application can implement the method provided in the embodiment of the present application. The specific working process of the above-described device and module can refer to the corresponding process of the method in the embodiment of the present application, which will not be repeated here.

[0067] In the embodiments provided in the present application, the coupling, direct coupling or communication connection between the modules shown or discussed may be indirect coupling or communication coupling through some interfaces, devices or modules, and may be electrical, mechanical or other forms, and the embodiments of the present application do not impose specific limitations on this.

[0068] In addition, each functional module in the embodiment of the present application can be integrated into one processing module, or each module can exist physically separately, or two or more modules can be integrated into one module. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules.

[0069] See also Fig. 9 , Fig. 9 FIG. 1 shows a schematic diagram of the structure of a vehicle provided by an embodiment of the present application. Fig. 9 As shown, the vehicle 300 may include a memory 310 and a processor 320. The memory 310 stores an application program, and the application program is configured to enable the processor 320 to execute the battery heating method provided in the embodiment of the present application when called by the processor 320.

[0070] The processor 320 may include one or more processing cores. The processor 320 uses various interfaces and lines to connect various parts of the entire vehicle 300, and is used to run or execute instructions, programs, code sets or instruction sets stored in the memory 310, and call to run or execute data stored in the memory 310, perform various functions of the vehicle 300, and process data.

[0071] The processor 320 can be implemented in at least one of the following hardware forms: digital signal processing (DSP), field programmable gate array (FPGA), and programmable logic array (PLA). The processor 320 can integrate one or a combination of a central processing unit (CPU), a graphics processing unit (GPU), and a modem. Among them, the CPU mainly processes the operating system, user interface, and application programs; the GPU is responsible for rendering and drawing display content; and the modem is used to process wireless communications. It is understandable that the above-mentioned modem may not be integrated into the processor 320, but may be implemented separately through a communication chip.

[0072] The memory 310 may include a random access memory (RAM) or a read-only memory (ROM). The memory 310 may be used to store instructions, programs, codes, code sets or instruction sets. The memory 310 may include a program storage area and a data storage area. The program storage area may store instructions for implementing an operating system, instructions for implementing at least one function, instructions for implementing the above-mentioned various method embodiments, etc. The data storage area may store data created by the vehicle 300 during use, etc.

[0073] The embodiment of the present application further provides a computer-readable storage medium having a program code stored thereon, the program code being configured to execute the method provided in the embodiment of the present application when called by a processor.

[0074] The computer-readable storage medium may be an electronic memory such as a flash memory, an electrically erasable programmable read-only memory (EEPROM), an erasable programmable read-only memory (EPROM), a hard disk or a ROM.

[0075] In some embodiments, the computer readable storage medium includes a non-volatile computer readable medium (Non-Transitory Computer-Readable Storage Medium, referred to as Non-TCRSM). The computer readable storage medium has a storage space for the program code that executes any method step in the above method. These program codes can be read from or written into one or more computer program products. The program code can be compressed in an appropriate form.

[0076] Finally, it should be noted that 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, 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 battery heating method, characterized in that: include: Check whether the current functional status of the battery meets the vehicle's intelligent driving mode activation conditions; When the current functional state of the battery does not meet the conditions for activating the vehicle's intelligent driving mode, the battery is heated.

2. The method according to claim 1, characterized in that The detecting whether the current functional state of the battery meets the vehicle's intelligent driving mode activation condition includes: Check whether the current discharge capacity of the battery meets the discharge requirements when the intelligent driving mode is turned on; When the discharge capacity of the battery meets the discharge requirement for enabling the intelligent driving mode, it is determined that the current functional state of the battery meets the conditions for enabling the intelligent driving mode of the vehicle; When the discharge capacity of the battery does not meet the discharge requirements for activation of the intelligent driving mode, it is determined that the current functional state of the battery does not meet the conditions for activation of the intelligent driving mode of the vehicle.

3. The method according to claim 1, characterized in that The battery is provided with a battery cell and an electric heating film inside, and the electric heating film is provided between the battery cells; when the current functional state of the battery does not meet the vehicle's intelligent driving mode activation condition, heating the battery includes: When the current functional state of the battery does not meet the conditions for starting the intelligent driving mode of the vehicle, power is supplied to the electric heating film, so that the electric heating film generates heat to drive the temperature of the battery cell to rise.

4. The method according to claim 3, characterized in that: The electric heating film is connected to a high-voltage to low-voltage power supply circuit of the vehicle through a battery terminal; when the current functional state of the battery does not meet the vehicle's intelligent driving mode activation condition, the electric heating film is powered, including: When the current functional state of the battery does not meet the conditions for starting the intelligent driving mode of the vehicle, the switch of the high-voltage to low-voltage power supply circuit is controlled to close, so that the high-voltage package of the vehicle supplies power to the electric heating film.

5. The method according to claim 1, characterized in that When the current functional state of the battery does not meet the vehicle's intelligent driving mode activation condition, after heating the battery, the method further includes: When the current functional status of the battery meets the conditions for starting the vehicle's intelligent driving mode, the current battery temperature is recorded; The battery temperature is controlled to be maintained greater than the current battery temperature.

6. The method according to claim 5, characterized in that The controlling the battery temperature to be greater than the current battery temperature includes: Determine a temperature interval according to the current battery temperature, wherein a lower limit of the temperature interval is the current battery temperature; The battery temperature is controlled to remain within the temperature range.

7. The method according to claim 6, characterized in that The controlling the battery temperature to remain within the temperature range includes: P1CN-GQJT240491, 2024P1910CN1 monitor battery temperature; When the battery temperature is at a lower limit of the temperature range, heating the battery; When the battery temperature reaches an upper limit of the temperature range, heating the battery is stopped.

8. A battery heating device, characterized in that: include: The status monitoring module is used to detect whether the current functional status of the battery meets the vehicle's intelligent driving mode activation conditions; The battery heating module is used to heat the battery when the current functional state of the battery does not meet the conditions for turning on the vehicle's intelligent driving mode.

9. A vehicle, characterized in that: include: A memory and a processor, wherein an application is stored in the memory, and the application is used to enable the processor to execute the method according to any one of claims 1 to 7 when called by the processor.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores program codes, and when the program codes are called by a processor, the processor is used to enable the processor to execute the method according to any one of claims 1 to 7.

Images