Thermal management method and device of power battery, control system, vehicle and medium

Abstract

The invention discloses a thermal management method and device of a power battery, a control system, a vehicle and a medium, and relates to the technical field of thermal management. The method comprises the steps that road information and environment temperature are obtained, and the road information is used for estimating time consumed when the vehicle travels to a destination; according to the road information and the environment temperature, the current driving working condition of the vehicle is determined from preset driving working conditions, a heat management control strategy corresponding to the driving working condition is executed, and battery heat management is conducted. Different driving conditions are divided for the driving process of the vehicle in combination with the road information and the environment temperature, the corresponding thermal management control strategy is matched under each driving condition, and thermal management is carried out on the power battery based on the thermal management control strategy corresponding to a certain driving condition. The temperature of the power battery can meet the requirement of the driving working condition for the battery temperature, differential heat management is carried out on the power battery by distinguishing the working conditions, excessive temperature reduction and temperature rise are reduced, energy consumption of heat management is reduced, and the cruising ability of the vehicle is improved.

Description

Technical Field

[0001] The present invention relates to the field of thermal management technology, and in particular to a thermal management method, device, control system, vehicle and medium for a power battery. Background Art

[0002] With the rapid development of the new energy vehicle industry, the performance of battery packs, as the main energy storage components of electric vehicles, directly affects the overall performance of electric vehicles. However, batteries generate a lot of heat during the charging and discharging process. If the heat cannot be dissipated in a timely and effective manner, the battery pack temperature will be too high or unevenly distributed, which will affect the battery's charge and discharge cycle efficiency, power and energy performance. In severe cases, it may even cause thermal runaway, threatening system safety and reliability. Therefore, thermal management of power batteries is particularly important.

[0003] The current thermal management strategy automatically triggers the start and stop of active heating and cooling of the battery by presetting a fixed temperature threshold. This thermal management process consumes a large amount of electrical energy, affecting the vehicle's endurance. Summary of the invention

[0004] Embodiments of the present invention provide a thermal management method, device, control system, vehicle and medium for a power battery to solve the problems of high energy consumption and low endurance of current thermal management control strategies.

[0005] In a first aspect, a thermal management method for a power battery is provided, the method comprising: acquiring road information and ambient temperature, the road information being used to estimate the time taken for the vehicle to travel to a destination; determining the current driving condition of the vehicle from preset driving conditions based on the road information and the ambient temperature; and executing a thermal management control strategy corresponding to the driving condition to perform thermal management on the power battery.

[0006] In a second aspect, a thermal management device for a power battery is provided, the device comprising: an acquisition module for acquiring road information and ambient temperature, the road information being used to estimate the time taken for the vehicle to travel to a destination; a determination module for determining the current driving condition of the vehicle from preset driving conditions based on the road information and the ambient temperature; and a thermal management module for executing a thermal management control strategy corresponding to the driving condition to perform thermal management of the power battery.

[0007] In a third aspect, a thermal management control system for a power battery is provided, the system comprising a vehicle controller and a thermal management system for the power battery; the vehicle controller is used to execute the steps of the thermal management method for the power battery as described in the first aspect above, so as to control the thermal management system of the power battery.

[0008] In a fourth aspect, a vehicle is provided, comprising the thermal management control system of the power battery as described in the third aspect above.

[0009] In a fifth aspect, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the thermal management method of the power battery are implemented.

[0010] In one solution implemented by the thermal management method, device, control system, vehicle and medium of the power battery described above, road information and ambient temperature can be obtained when the vehicle is driving, and the road information is used to estimate the time it takes for the vehicle to travel to the destination; then, the vehicle's current driving condition is determined from the preset driving conditions based on the road information and ambient temperature, and the thermal management control strategy corresponding to the driving condition is executed to perform thermal management on the vehicle's power battery. The present application divides the vehicle's driving process into different driving conditions based on road information and ambient temperature, and each driving condition is adapted with a corresponding thermal management control strategy. Based on the thermal management control strategy corresponding to a certain driving condition, the power battery is thermally managed so that the temperature of the power battery can meet the battery temperature requirements of the driving condition. By distinguishing the working conditions, the power battery is thermally managed differently, excessive cooling and heating are reduced, the energy consumption of thermal management is reduced, and the vehicle's endurance is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0012] Figure 1 A schematic diagram of a process flow of a thermal management method for a power battery proposed in one embodiment of the present application; Figure 2 A schematic flow chart of a thermal management method for a power battery according to another embodiment of the present application; Figure 3 A schematic flow chart of a thermal management method for a power battery according to another embodiment of the present application; Figure 4 A schematic flow chart of a thermal management method for a power battery according to another embodiment of the present application; Figure 5 A schematic flow chart of a thermal management method for a power battery according to another embodiment of the present application; Figure 6 is a schematic block diagram of a thermal management device for a power battery in one embodiment of the present application; Figure 7is a schematic block diagram of a thermal management system of a power battery in one embodiment of the present application; Figure 8 It is a schematic block diagram of a vehicle in one embodiment of the present application. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0014] The thermal management method for power batteries proposed in the embodiments of the present application can be applied to plug-in hybrid vehicles, extended-range electric vehicles, pure electric vehicles and other vehicles that use power batteries to provide driving force. Under different driving conditions, different thermal management control strategies are implemented to reduce the energy consumption of power battery thermal management and improve the vehicle's pure electric endurance.

[0015] The thermal management method of the power battery proposed in the embodiment of the present application can be executed by a thermal management device of the power battery, which can be set in the cloud algorithm module of the vehicle computer TBOX, or in the vehicle controller VCU.

[0016] For example, if the thermal management device of the power battery is set in the vehicle controller, the map information of the vehicle's journey ahead is first obtained through the cloud map module, and after transparent transmission and analysis by the intelligent interconnection system, the road information is sent to the CAN bus through the intelligent interconnection system MCU. The temperature sensor can send the ambient temperature to the CAN bus; the vehicle controller VCU obtains the road information and ambient temperature from the CAN bus to dynamically adjust the thermal management control strategy of the power battery based on the road information and ambient temperature.

[0017] If the thermal management device of the power battery is set in the cloud algorithm module of TBOX, the map information in front of the vehicle can be obtained through the cloud map module first, and the road information is sent to the CAN bus through the MCU of the intelligent interconnection system after transparent transmission and analysis by the intelligent interconnection system. The temperature sensor can send the ambient temperature to the CAN bus, and TBOX sends the road information and ambient temperature on the CAN bus to the cloud algorithm module. The thermal management device of the power battery set in the cloud determines the current driving condition of the vehicle and the thermal management control strategy that needs to be executed. The cloud algorithm module can send the thermal management control strategy that needs to be executed to the vehicle controller, and the vehicle controller implements the thermal management control strategy.

[0018] Figure 1 This is a flow chart of a thermal management method for a power battery proposed in one embodiment of the present application, such as Figure 1 As shown, the following steps may be included: S101, acquiring road information and ambient temperature, wherein the road information is used to estimate the time taken for the vehicle to travel to a destination.

[0019] In some embodiments, road information and ambient temperature may be acquired in real time while the vehicle is traveling.

[0020] In other embodiments, the road information and the ambient temperature may be intermittently acquired at certain time intervals during the driving of the vehicle.

[0021] The road information is used to estimate the time it takes for the vehicle to reach the destination. For example, the road information may include the mileage that the vehicle needs to continue to travel, and / or the length of time that the vehicle needs to continue to travel, etc.

[0022] S102, determining the current driving condition of the vehicle from preset driving conditions based on road information and ambient temperature.

[0023] The embodiment of the present application can refer to different road information and ambient temperatures in advance, divide the vehicle driving process into working conditions, and obtain multiple preset driving conditions.

[0024] During vehicle driving, when new road information and ambient temperature are obtained, the vehicle's driving condition can be adjusted or switched to determine the vehicle's current driving condition.

[0025] In some embodiments, different road information and ambient temperatures can be used as sample data, and the driving conditions corresponding to the road information and ambient temperatures can be used as sample labels to pre-build a prediction model / classification model, and use the sample data and sample labels to perform model training.

[0026] During vehicle driving, when new road information and ambient temperature are obtained, the trained model can be used to determine the current driving condition of the vehicle.

[0027] S103, executing a thermal management control strategy corresponding to the driving condition to perform thermal management on the power battery.

[0028] The embodiment of the present application pre-adapts different thermal management control strategies for different driving conditions. By executing the thermal management control strategies corresponding to the driving conditions, different thermal management is performed on the power battery under different driving conditions.

[0029] In summary, the thermal management method for power batteries proposed in the embodiment of the present application can obtain road information and ambient temperature when the vehicle is driving. The road information is used to estimate the time it takes for the vehicle to travel to the destination; then, based on the road information and ambient temperature, the vehicle's current driving condition is determined from the preset driving conditions, and the thermal management control strategy corresponding to the driving condition is executed to perform thermal management on the vehicle's power battery. The present application divides the vehicle's driving process into different driving conditions in combination with road information and ambient temperature, and each driving condition is adapted with a corresponding thermal management control strategy. Based on the thermal management control strategy corresponding to a certain driving condition, the power battery is thermally managed so that the temperature of the power battery can meet the battery temperature requirements of the driving condition. By distinguishing the conditions, the power battery is thermally managed differently, excessive cooling and heating are reduced, the energy consumption of thermal management is reduced, and the vehicle's endurance is improved.

[0030] Based on the above embodiment, when the road information includes the mileage of the vehicle to continue traveling, such as Figure 2 As shown, the "obtaining road information" in the above step S102 may include the following steps: S201, when the vehicle is in commuting mode, determining the commuting route of the vehicle according to commuting information preset by the user.

[0031] In an embodiment of the present application, when acquiring road information, it is first determined whether the vehicle is in commuting mode; when the vehicle is in commuting mode, the commuting route of the vehicle is determined based on preset commuting information.

[0032] For example, the user can set multiple commuting information on the vehicle computer as needed, for example, setting a specific commuting route and / or setting a commuting location.

[0033] The embodiment of the present application can determine the commuting route of the vehicle based on the commuting information.

[0034] For example, if the commuting information specifies the commuting route, the commuting route is used as the commuting route of the vehicle. If the commuting information does not specify the commuting route and only provides the commuting location, the commuting route of the vehicle can be determined based on the commuting location and real-time traffic analysis.

[0035] Among them, the commuting location may include two places for commuting, namely the commuting starting point and the commuting ending point.

[0036] S202, calculating the mileage that the vehicle needs to continue to travel on the commuting route to obtain the mileage that the vehicle needs to continue to travel.

[0037] In the embodiment of the present application, after determining the commuting route, the mileage that the vehicle needs to continue to travel on the commuting route can be further calculated to complete the commuting route. The calculated mileage is used as the "mileage that the vehicle needs to continue to travel".

[0038] In some embodiments, the time it will take for the vehicle to reach the destination may be estimated based on the mileage the vehicle needs to continue traveling.

[0039] The embodiment of the present application provides an implementation method for thermal management of a vehicle power battery in commuting mode, that is, determining the commuting route of the vehicle according to the commuting information preset by the user, and then calculating the mileage that the vehicle needs to continue to travel on the commuting route, and then determining the current driving condition of the vehicle according to the mileage that the vehicle needs to continue to travel and the ambient temperature, and implementing thermal management of the power battery by executing the thermal management control strategy corresponding to the driving condition. This embodiment can implement different thermal management control strategies according to different driving conditions when the user is driving the vehicle for commuting, so that the temperature of the power battery can meet the power demand of the vehicle, avoid excessive heating or cooling to achieve the predetermined target temperature, reduce thermal management energy consumption, and enhance the vehicle's endurance.

[0040] Based on the above embodiment, when the commuting information preset by the user includes the commuting location, whether the vehicle is in the commuting mode can be determined in the following manner: As a feasible implementation mode, when the vehicle is within a preset range of a commuting location, it can be determined that the vehicle is in commuting mode, and when the vehicle is not within the preset range of the commuting location, it can be determined that the vehicle is not in commuting mode.

[0041] Furthermore, as another feasible implementation method, when the vehicle is within a preset range of a commuting location, it can continue to detect whether the vehicle's intelligent commuting driving switch is turned on; if it is turned on, it is determined that the vehicle is in commuting mode; if it is not turned on, it is determined that the vehicle is not in commuting mode.

[0042] Exemplarily, the commuting locations set by the user include home and company; when performing thermal management of the vehicle's power battery, the vehicle's location can be detected in real time. When the vehicle is within 500 meters of home or the vehicle is within 500 meters of home, it is further detected whether the user has turned on the smart commuting driving switch. If it is turned on, it can be determined that the vehicle is in commuting mode. If not, it is determined that the vehicle is not in commuting mode.

[0043] Exemplarily, the location of the vehicle may be acquired in the following manner: when the vehicle is started, GPS initialization may be performed to identify the location of the vehicle.

[0044] The commuting location used in the above process may be any commuting location involved in the commuting information. Different commuting locations may correspond to different preset ranges, for example, the preset range corresponding to home may be 300 meters, and the preset range corresponding to the company may be 500 meters. In implementation, the preset ranges of different commuting locations may be configured by the user as needed.

[0045] For example, an option button for the intelligent thermal management control function of the commuting mode can be set on the vehicle's host interface, such as the switch option of "intelligent commuting driving"; and a text annotation can be provided, such as "After this function is turned on, when commuting navigation is carried out, the power system will intelligently control the thermal management of the power battery according to the commuting route to continuously improve the vehicle's drivability and economy." This reminds users to turn on or off the intelligent commuting driving switch as needed.

[0046] The embodiment of the present application provides a method for determining whether the commuting mode is on. When the vehicle is within a preset range of the commuting location, the determination of whether the vehicle's intelligent commuting driving switch is on is initiated. By defining the preset range, locations with a low probability of user commuting are screened out. Only when the vehicle is close to the commuting location is the determination of whether the vehicle's intelligent commuting driving switch is on, thereby reducing the number of determinations of "whether the commuting mode is on", simplifying the processing flow, and improving the efficiency of commuting mode determination. In addition, by adding an intelligent commuting driving switch, the user's commuting needs can be accurately obtained according to the state of the switch, and the commuting mode can be turned on when the user has a commuting need, so that the road information can be determined with reference to the commuting route, thereby accurately determining the vehicle's driving conditions.

[0047] Based on this embodiment, before determining whether the vehicle is within the preset range of the commuting location, it is possible to first detect whether the vehicle is in commuting mode. When the vehicle is not in commuting mode, it is possible to determine whether the vehicle is within the preset range of the commuting location to determine whether the commuting mode needs to be turned on.

[0048] On the basis of the above embodiment, when the commuting location includes the commuting starting location and the commuting ending location, the above embodiment of "when the vehicle is within the preset range of the commuting location, detecting whether the intelligent commuting driving switch of the vehicle is turned on" may include the following steps: During the commuting time period corresponding to the commuting starting point, detecting whether the vehicle is within the preset range of the commuting starting point; if so, detecting whether the vehicle's intelligent commuting driving switch is turned on; During the commuting time period corresponding to the commuting end location, detect whether the vehicle is within the preset range of the commuting end location; if so, detect whether the vehicle's intelligent commuting driving switch is turned on.

[0049] For example, in a certain commuting information set by a user, two addresses are included: a home address and a company address, wherein the home address can be used as the address of the commuting starting point, and the company address can be used as the address of the commuting ending point.

[0050] It can be determined whether the vehicle is within 500 meters of the home address during the time period of 6:00 to 10:00. If so, it is further detected whether the intelligent commuting driving switch of the vehicle is turned on. If not, it is not detected whether the intelligent commuting driving switch of the vehicle is turned on.

[0051] During the time period of 17:00~22:00, it can be determined whether the vehicle is within 500 meters of the company address. If so, it is further detected whether the intelligent commuting driving switch of the vehicle is turned on. If not, it is not detected whether the intelligent commuting driving switch of the vehicle is turned on.

[0052] Among them, the commuting time period corresponding to the commuting starting point and the commuting time period corresponding to the commuting end point can be configured by the user as needed.

[0053] In the embodiment of the present application, before determining whether the vehicle has entered the preset range of the commuting location, it is first determined whether it is currently in the commuting time period, such as the working time period or the off-get off work time period. If so, it is further determined whether the vehicle is located near the home address or the company address. In this way, the number of triggers of the process of "determining whether the commuting mode is on" is further reduced, and it is triggered at the moment when the probability of commuting demand is high, and it is not triggered at the moment when the probability of commuting demand is low. While reducing the computing pressure of the processor, it avoids determining that the vehicle is in commuting mode when there is no commuting demand. For example, the following situation: If the user does not turn off the smart commuting driving switch in time after turning it on, the smart commuting driving switch is always on when the vehicle is parked near the company. The user goes out to meet clients at 10:30. If the commuting time period is not set, this situation is easily confirmed as the vehicle being in commuting mode.

[0054] On the basis of the above embodiment, when acquiring the road information in the above step S101, the following situations may also be included: When the vehicle is in navigation mode, the mileage that the vehicle needs to continue traveling is determined based on the navigation route.

[0055] For example, after the vehicle is started, GPS is initialized to identify the location of the vehicle. Then it is detected whether the vehicle navigation is turned on. If it is turned on, it is confirmed that the vehicle is in navigation mode. If it is not turned on, it is confirmed that the vehicle is not in navigation mode. When the vehicle is in navigation mode, the navigation destination can be obtained, and then the road condition information ahead of the journey can be further obtained based on the cloud map module. Finally, the vehicle controller can combine the road condition information ahead of the vehicle, the location of the vehicle, and the navigation destination to determine the mileage that the vehicle needs to continue to travel to reach the navigation destination, that is, the above-mentioned "mileage that the vehicle needs to continue to travel".

[0056] The embodiment of the present application provides a method for determining road information in navigation mode, and provides an implementation method for thermal management of a vehicle power battery in navigation mode, that is, according to the navigation destination in the navigation mode, the mileage that the vehicle needs to continue to travel is calculated, and then the vehicle's current driving condition is determined according to the mileage that the vehicle needs to continue to travel and the ambient temperature, and the thermal management of the power battery is achieved by executing the thermal management control strategy corresponding to the driving condition. This embodiment can implement different thermal management control strategies according to different driving conditions when the user drives the vehicle to a certain destination, so that the temperature of the power battery can meet the power demand of the vehicle, avoid excessive heating or cooling to achieve the predetermined target temperature, reduce thermal management energy consumption, and enhance the vehicle's endurance.

[0057] Based on the above embodiments, Figure 3 As shown, when the road information includes the mileage that the vehicle needs to continue to travel, the above step S102 of "determining the current driving condition of the vehicle from the preset driving conditions according to the road information and the ambient temperature" may include the following steps: S301, determining, from among preset mileage intervals, a mileage interval to which the mileage that the vehicle needs to continue traveling belongs.

[0058] S302: Determine the temperature range to which the ambient temperature belongs from the preset temperature ranges.

[0059] S303, determining the current driving condition of the vehicle in combination with the determined mileage range and temperature range.

[0060] The embodiment of the present application predefines different preset mileage intervals and preset temperature intervals. The specific division ranges can be set as needed, and this application does not impose any restrictions.

[0061] For example, the preset mileage interval may include but is not limited to a short-distance interval and a long-distance interval. The mileage range corresponding to the short-distance interval may be within 10km, and the mileage range corresponding to the long-distance interval may be 10km-20km.

[0062] The preset temperature range may include but is not limited to a low temperature range and a high temperature range, etc. For example, the temperature range corresponding to the low temperature range is -20°C to 18°C, and the temperature range corresponding to the high temperature range is 28°C to 42°C.

[0063] Correspondingly, the preset driving conditions may include but are not limited to high-temperature short-distance driving conditions, high-temperature long-distance driving conditions, low-temperature short-distance driving conditions, low-temperature long-distance driving conditions, and the like.

[0064] After determining the mileage that the vehicle needs to continue to travel, a mileage interval to which the mileage that the vehicle needs to continue to travel belongs is determined from multiple preset mileage intervals, such as the mileage that the vehicle needs to continue to travel is within a short-distance interval; or the mileage that the vehicle needs to continue to travel is within a long-distance interval.

[0065] After the ambient temperature is determined, the temperature interval to which the ambient temperature belongs is determined from a plurality of preset temperature intervals, such as the ambient temperature being in a low temperature interval; or the ambient temperature being in a high temperature interval.

[0066] When the mileage interval to which the vehicle needs to continue to travel belongs is a short-distance interval, and the temperature interval to which the ambient temperature belongs is a low-temperature interval, the current driving condition of the vehicle is determined to be a low-temperature short-distance driving condition; When the mileage interval to which the vehicle needs to continue to travel belongs is a long-distance interval, and the temperature interval to which the ambient temperature belongs is a low-temperature interval, the current driving condition of the vehicle is determined as a low-temperature long-distance driving condition; When the mileage interval to which the vehicle needs to continue to travel belongs is a short-distance interval, and the temperature interval to which the ambient temperature belongs is a high-temperature interval, the current driving condition of the vehicle is determined as a high-temperature short-distance driving condition; When the mileage interval that the vehicle needs to continue to travel belongs to is a long-distance interval, and the temperature interval to which the ambient temperature belongs is a high-temperature interval, the current driving condition of the vehicle is determined as a high-temperature long-distance driving condition.

[0067] The embodiment of the present application divides the driving conditions involved in the vehicle driving process into high / low temperature and long / short distance driving conditions in combination with the mileage the vehicle needs to continue to travel and the ambient temperature, so that when configuring corresponding thermal management strategies for different driving conditions, objective factors such as the ambient temperature under the driving condition and whether long-term driving is required can be fully considered, and the start-stop strategy of the cooling / heating process in the thermal management strategy can be appropriately adjusted to improve the vehicle's endurance and economy while ensuring the vehicle's power.

[0068] Based on the above embodiments, the thermal management control strategies corresponding to different driving conditions may include but are not limited to the following: The thermal management control strategy corresponding to the high-temperature short-distance driving condition includes: controlling the number of activations of battery cooling to within a preset number of activations; and / or reducing the difference between the trigger temperature for activating battery cooling and the trigger temperature for shutting down battery cooling; The thermal management control strategy corresponding to the high-temperature long-distance driving condition includes: increasing the difference between the trigger temperature for starting battery cooling and the trigger temperature for shutting down battery cooling; and / or reducing the number of starts and stops of the compressor in the thermal management system; The thermal management control strategy corresponding to low-temperature short-distance driving conditions includes: when the driving power output by the power battery meets the target driving power required by the vehicle, suspending the triggering of battery heating; The thermal management control strategy corresponding to low-temperature long-distance driving conditions includes: estimating the energy consumption of starting battery heating and the additional available energy after the battery temperature rises, and determining the trigger temperature for starting battery heating based on the energy consumption and the additional available energy.

[0069] For example, in high-temperature short-distance driving conditions, due to the high ambient temperature, the battery heat dissipation is difficult, and the battery cooling needs to be turned on to cool the power battery. Therefore, for this driving condition, the start-stop strategy of battery cooling can be adjusted. In the case of short-distance driving, the battery does not need to be discharged continuously for a long time, and the battery heat will not continue to rise. Therefore, the battery cooling can be turned off or turned on only once, and the difference between the trigger temperature for turning on and off active cooling is reduced. That is, the cooling time is shortened.

[0070] In high-temperature long-distance driving conditions, battery cooling needs to be turned on due to the high ambient temperature. Therefore, the start-stop strategy of battery cooling can be adjusted for this driving condition. In the case of long-distance driving, the battery needs to work and discharge for a long time, and the battery heat will accumulate and continue to rise. Therefore, the difference between the trigger temperature for turning on and off active cooling can be increased, that is, the cooling time is increased and the number of start-stop switching is reduced; at the same time, the number of compressor starts and stops can be reduced to reduce thermal management energy consumption.

[0071] In low-temperature short-distance driving conditions, the battery heating needs to be turned on due to the low ambient temperature. Therefore, the start-stop strategy of the battery heating can be adjusted for this driving condition. In the case of short-distance driving, the battery does not need to be discharged continuously for a long time. Therefore, if the driving power output by the battery can meet the vehicle requirements, the battery active heating can be turned off as much as possible to reduce energy consumption.

[0072] In the case of low-temperature long-distance driving, the battery heating needs to be turned on due to the low ambient temperature. Therefore, the start-stop strategy of the battery heating can be adjusted for this driving condition. In the case of long-distance driving, the battery needs to be discharged continuously for a long time. In order to ensure the supply of driving power, the battery needs to be actively heated. In order to save energy, the temperature threshold that triggers battery heating (that is, the trigger temperature for starting battery heating mentioned above) can be further adjusted to minimize the number of starts and stops of heating. For example, the energy loss caused by active battery heating is compared with the increase in available energy brought about by the battery temperature rise, so as to determine the temperature threshold that triggers active battery heating.

[0073] For ease of understanding, the temperature threshold that triggers active battery heating is explained below: In low temperature environments, battery performance will be affected, including reduced energy density, slower charging speed, and reduced discharge capacity. In order to improve these conditions, some battery systems use active heating technology to increase the temperature of the battery.

[0074] Active heating is usually achieved by consuming electrical energy, such as using a resistive heater or utilizing the internal resistance of the battery to generate heat. This process consumes a certain amount of electrical energy, resulting in energy loss.

[0075] When the battery temperature increases, the rate of its internal chemical reactions increases, thereby improving the battery's discharge capacity and charging efficiency.

[0076] This means that within the appropriate temperature range, the battery can store and release more energy, that is, the battery's available energy is improved.

[0077] Based on the above two points, a balance needs to be found, that is, when it is reasonable to start active heating of the battery.

[0078] This balance point is the threshold that triggers active battery heating. It can be determined based on the trade-off between energy loss and available energy boost.

[0079] If the battery temperature is too low, the energy gain from active heating may be far greater than the energy loss, and it is beneficial to start heating at this time. However, if the battery temperature is already high enough, further heating may only increase energy consumption without significantly contributing to energy gain, and heating should not be started at this time.

[0080] Therefore, by comparing the energy loss of active battery heating and the available energy increase brought by temperature rise, a reasonable temperature threshold for triggering battery heating can be determined to optimize the performance and efficiency of the battery.

[0081] The embodiment of the present application takes into account the ambient temperature of the vehicle and the driving duration under different driving conditions to adjust the start and stop times of the battery cooling / heating strategy, so as to reduce the energy consumed by battery temperature adjustment while meeting the driving power and improve the vehicle's endurance.

[0082] Based on the above embodiments, Figure 4 As shown, in the above step S103, "executing the thermal management control strategy corresponding to the driving condition to perform thermal management on the power battery" may include the following steps: S401, estimating a tolerance rate of driving power according to vehicle state information, where the tolerance rate represents the degree of difference between the driving power actually output by the power battery and the target driving power required by the vehicle.

[0083] S402: When the tolerance rate exceeds a preset tolerance rate threshold, a thermal management control strategy corresponding to the driving condition is executed to perform thermal management on the power battery.

[0084] For example, when obtaining the vehicle road information and the ambient temperature, the vehicle state information can be further obtained, and the vehicle state information can be used to estimate the vehicle's requirements for the accuracy of the driving power. For example, the vehicle has strict requirements for the driving power, and the vehicle must be driven strictly according to the driving power required by the vehicle; or the vehicle has loose requirements for the driving power, and the vehicle can be driven with reference to the driving power required by the vehicle.

[0085] In the embodiment of the present application, the tolerance rate of driving power is used to characterize the vehicle's requirement for the accuracy of driving power. The higher the tolerance rate, the greater the floating space of the driving power actually output by the power battery relative to the target driving power required by the vehicle, and the greater the allowed difference; the lower the tolerance rate, the smaller the floating space of the driving power actually output by the power battery relative to the target driving power required by the vehicle, and the smaller the allowed difference.

[0086] In the embodiment of the present application, a tolerance rate threshold can be pre-set, and the value can be set as needed, and the present application does not impose any limitation.

[0087] Among them, estimating the tolerance rate based on the vehicle status information can be achieved through a trained prediction model, or other classification prediction methods, and this application does not impose any restrictions.

[0088] After estimating the tolerance rate of the driving power according to the vehicle status information, it can be further determined whether the current tolerance rate exceeds the preset tolerance rate threshold. If it does not exceed, the thermal management of the battery is performed according to the original thermal management control strategy, that is, the number of starts and stops of cooling / heating is adjusted. If it exceeds, the thermal management control strategy corresponding to the driving condition determined in the above step S102 is executed.

[0089] The vehicle status information may include but is not limited to at least one of the following: a driving mode corresponding to the vehicle, a driving style corresponding to the vehicle, and a charge state of the power battery.

[0090] Furthermore, the vehicle status information may also include pedal information, vehicle speed, and the like.

[0091] For example, driving modes may include sports mode, comfort mode, etc. Different driving styles correspond to different steering flexibility. In sports mode, when the steering flexibility requirement is high, the vehicle has higher requirements for the accuracy of driving power, and the driving power output to the vehicle needs to reach the target driving power required by the vehicle. In comfort mode, when the steering flexibility requirement is low, the vehicle has lower requirements for the accuracy of driving power, and a certain deviation is allowed between the driving power output to the vehicle and the target driving power required by the vehicle.

[0092] In addition, the state of charge of the power battery can also be used as a reference data for estimating the tolerance rate of the driving power. When the state of charge is low, the estimated tolerance rate will increase, and when the state of charge is low, the estimated tolerance rate will decrease.

[0093] Before executing the thermal management control strategy corresponding to the current driving condition, the embodiment of the present application first checks whether the vehicle's current driving power requirements are strict, that is, whether the current state of the vehicle allows a deviation between the actual output driving power and the required target driving power; if the requirements are strict, the original thermal management control strategy is executed, that is, the number of cooling / heating starts and stops is not adjusted to ensure that the battery temperature can reach the target temperature and provide sufficient driving force for the vehicle; if the requirements are not strict, different thermal management control strategies are adapted for different driving conditions to reduce the energy consumption of thermal management and improve the endurance. Overall, the applicability of the thermal management method of the power battery in the embodiment of the present application is improved.

[0094] Based on the above embodiment, the preset driving conditions also include a high temperature fast charging temperature preset condition and a low temperature fast charging temperature preset condition. Figure 5 As shown, the above step S102 of "determining the current driving condition of the vehicle from the preset driving conditions according to the road information and the ambient temperature" may also include the following steps: S501, determining whether the vehicle reaches a preset fast charging temperature condition.

[0095] The fast charging temperature preset condition can be used to define the characteristic information when the vehicle enters / is preparing to enter the charging state.

[0096] In some embodiments, a fast charging temperature preset function may be provided on the vehicle computer, and a function switch may be displayed on the central control screen, so that the user can turn on the fast charging temperature preset function by turning on the switch when he wants to preheat the battery before fast charging.

[0097] In other embodiments, when the vehicle is in navigation mode, it is also possible to determine whether the navigation destination is a charging station. If so, it is confirmed that the vehicle meets the preset fast charging temperature condition.

[0098] S502: If yes, when the mileage that the vehicle needs to continue to travel is in a preset short-distance range and the ambient temperature is in a preset high-temperature range, determine that the current driving condition of the vehicle is a high-temperature fast-charging temperature preset condition.

[0099] S503, when the mileage required for the vehicle to travel is within a preset short-distance range and the ambient temperature is within a preset low-temperature range, determining that the current driving condition of the vehicle is a preset low-temperature fast-charging temperature condition.

[0100] After the vehicle reaches the fast charging temperature preset condition, it can be determined whether the vehicle's current driving condition is the high temperature fast charging temperature preset condition: That is, determine whether the mileage that the vehicle needs to continue to travel is within the short-distance interval, and determine the ambient temperature range to which the ambient temperature belongs.

[0101] When the mileage that the vehicle needs to continue traveling is in a short distance range and the ambient temperature is in a low temperature range, the current driving condition of the vehicle is determined as a low-temperature fast charging temperature preset condition.

[0102] When the mileage that the vehicle needs to continue traveling is in a short distance range and the ambient temperature is in a high temperature range, the current driving condition of the vehicle is determined as a high-temperature fast charging temperature preset condition.

[0103] The thermal management control strategy corresponding to the low-temperature fast-charge temperature preset condition is: start battery heating and increase the trigger temperature for turning off battery heating. The control strategy for the high-temperature fast-charge temperature preset condition is: start battery cooling and increase the trigger temperature for turning off battery cooling.

[0104] The increase / decrease value of the trigger temperature may be determined with reference to the current battery temperature and battery power.

[0105] For example: when the user does not use the car computer to navigate to the charging station, the fast charging temperature preset function can be used. The thermal management device of the power battery will combine the current battery temperature and battery power to start battery precooling / preheating before charging, so that the battery has a suitable charging temperature, thereby increasing the charging speed. Since turning on this function may consume some battery power, a pop-up window can be displayed when the user turns on the fast charging temperature preset function to remind the user to "please turn on this function about half an hour before charging."

[0106] When the user uses the car computer to navigate to a charging station, and the navigation destination is a fast charging station, after the vehicle enters the low-temperature / high-temperature fast charging preset operating conditions, the thermal management device of the power battery can intelligently adjust the trigger temperature for shutting down battery heating / battery cooling based on the battery power and the mileage the vehicle needs to continue traveling, while minimizing power consumption, thereby increasing the charging speed.

[0107] The embodiment of the present application is applicable to a vehicle charging scenario and performs thermal management of the power battery. Before the vehicle is charged, the battery is preheated in advance to increase the charging speed.

[0108] It should be understood that the order of execution of the steps in the above embodiment does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present invention.

[0109] In one embodiment, a thermal management device for a power battery is provided, and the thermal management device for the power battery corresponds one-to-one to the thermal management method for the power battery in the above embodiment. Figure 6 As shown, the thermal management device of the power battery includes an acquisition module 601 , a determination module 602 and a thermal management module 603 .

[0110] The acquisition module 601 is used to acquire road information and ambient temperature. The road information is used to estimate the time it takes for the vehicle to travel to the destination.

[0111] The determination module 602 is used to determine the current driving condition of the vehicle from preset driving conditions according to the road information and the ambient temperature.

[0112] The thermal management module 603 is used to execute the thermal management control strategy corresponding to the driving condition and perform thermal management on the power battery.

[0113] In some embodiments, the road information includes the mileage that the vehicle needs to continue traveling, and the acquisition module is used to: when the vehicle is in commuting mode, determine the commuting route of the vehicle based on the commuting information preset by the user; calculate the mileage that the vehicle needs to continue traveling on the commuting route to obtain the mileage that the vehicle needs to continue traveling.

[0114] In some embodiments, the user's preset commuting information includes a commuting location, and an acquisition module is used to determine whether the vehicle is in commuting mode in the following manner: when the vehicle is within a preset range of the commuting location, detecting whether the vehicle's smart commuting driving switch is turned on; if turned on, determining that the vehicle is in commuting mode; if not turned on, determining that the vehicle is not in commuting mode.

[0115] In some embodiments, the commuting location includes a commuting starting location and a commuting ending location; the acquisition module is used to: detect whether the vehicle is within a preset range of the commuting starting location within the commuting time period corresponding to the commuting starting location; if so, detect whether the vehicle's smart commuting driving switch is turned on; detect whether the vehicle is within the preset range of the commuting ending location within the commuting time period corresponding to the commuting ending location; if so, detect whether the vehicle's smart commuting driving switch is turned on.

[0116] In some embodiments, the road information includes the mileage that the vehicle needs to continue traveling, and the acquisition module is used to: when the vehicle is in navigation mode, determine the mileage that the vehicle needs to continue traveling based on the navigation route.

[0117] In some embodiments, the determination module is used to: determine the mileage interval to which the mileage that the vehicle needs to continue traveling belongs from a preset mileage interval; determine the temperature interval to which the ambient temperature belongs from a preset temperature interval; determine the current driving condition of the vehicle in combination with the determined mileage interval and temperature interval; the preset mileage interval includes a long-distance interval and a short-distance interval; the preset temperature interval includes a low-temperature interval and a high-temperature interval; the preset driving conditions include high-temperature short-distance driving conditions, high-temperature long-distance driving conditions, low-temperature short-distance driving conditions, and low-temperature long-distance driving conditions.

[0118] In some embodiments, the thermal management control strategy corresponding to the high-temperature short-distance driving condition includes: controlling the number of activations of battery cooling to within a preset number of activations; and / or reducing the difference between the trigger temperature for activating battery cooling and the trigger temperature for deactivating battery cooling; The thermal management control strategy corresponding to the high-temperature long-distance driving condition includes: increasing the difference between the trigger temperature for starting battery cooling and the trigger temperature for shutting down battery cooling; and / or reducing the number of starts and stops of the compressor in the thermal management system; The thermal management control strategy corresponding to low-temperature short-distance driving conditions includes: when the driving power output by the power battery meets the target driving power required by the vehicle, suspending the triggering of battery heating; The thermal management control strategy corresponding to low-temperature long-distance driving conditions includes: estimating the energy consumption of starting battery heating and the additional available energy after the battery temperature rises, and determining the trigger temperature for starting battery heating based on the energy consumption and the additional available energy.

[0119] In some embodiments, the thermal management module is used to: estimate the tolerance rate of the driving power based on the vehicle status information, the tolerance rate characterizing the degree of difference between the driving power actually output by the power battery and the target driving power required by the vehicle; when the tolerance rate exceeds a preset tolerance rate threshold, execute the thermal management control strategy corresponding to the driving condition to perform thermal management of the power battery.

[0120] In some embodiments, the vehicle status information includes at least one of the following: a driving mode corresponding to the vehicle, a driving style corresponding to the vehicle, and a state of charge of a power battery.

[0121] In some embodiments, a determination module is used to: determine whether the vehicle meets the fast charging temperature preset condition; if so, when the mileage the vehicle needs to continue traveling is in a short distance interval and the ambient temperature is in a high temperature interval, determine that the vehicle's current driving condition is a high temperature fast charging temperature preset condition; when the mileage the vehicle needs to continue traveling is in a short distance interval and the ambient temperature is in a low temperature interval, determine that the vehicle's current driving condition is a low temperature fast charging temperature preset condition; the thermal management control strategy corresponding to the low temperature fast charging temperature preset condition is: start battery heating, and increase the trigger temperature for turning off battery heating; the control strategy for the high temperature fast charging temperature preset condition is: start battery cooling, and increase the trigger temperature for turning off battery cooling.

[0122] In some embodiments, the determination module is used to: if it is detected that the user has turned on the fast charging temperature preset function, confirm that the vehicle has reached the fast charging temperature preset condition; or, when the vehicle is in navigation mode, determine whether the navigation destination is a charging station; if so, confirm that the vehicle has reached the fast charging temperature preset condition.

[0123] In summary, the thermal management device of the power battery in the embodiment of the present application can obtain road information and ambient temperature when the vehicle is driving. The road information is used to estimate the time it takes for the vehicle to travel to the destination; then, based on the road information and ambient temperature, the vehicle's current driving condition is determined from the preset driving conditions, and the thermal management control strategy corresponding to the driving condition is executed to perform thermal management on the vehicle's power battery. The present application divides the vehicle's driving process into different driving conditions based on the road information and ambient temperature. Each driving condition is adapted with a corresponding thermal management control strategy. Based on the thermal management control strategy corresponding to a certain driving condition, the power battery is thermally managed so that the temperature of the power battery can meet the battery temperature requirements of the driving condition. By distinguishing the conditions, the power battery is thermally managed differently, excessive cooling and heating are reduced, the energy consumption of thermal management is reduced, and the vehicle's endurance is improved.

[0124] For the specific definition of the thermal management device of the power battery, please refer to the definition of the thermal management method of the power battery above, which will not be repeated here. Each module in the thermal management device of the power battery can be implemented in whole or in part by software, hardware and a combination thereof. The above modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

[0125] In one embodiment, Figure 7As shown, a thermal management control system 70 of a power battery is provided, including a vehicle controller 71 and a thermal management system 72 of the power battery. The vehicle controller 70 is used to execute the steps of the thermal management method of the power battery in any of the above embodiments to control the thermal management system of the power battery.

[0126] In one embodiment, if Figure 8 As shown, a vehicle 80 is provided, comprising Figure 7 A thermal management control system 70 of a power battery is shown.

[0127] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the thermal management method of the power battery in the above embodiment is implemented, for example Figure 1 S101-S103 as shown, or Figures 2 to 5 Alternatively, when the computer program is executed by a processor, the functions of each module / unit in the embodiment of the thermal management device for the power battery described above are realized, for example Figure 6 The functions of the acquisition module, determination module and thermal management module are not described here in detail to avoid repetition. The computer-readable storage medium may be non-volatile or volatile.

[0128] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application may include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0129] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above.

[0130] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A thermal management method for a power battery, characterized in that: The method comprises: Acquiring road information and ambient temperature, wherein the road information is used to estimate the time taken for the vehicle to travel to a destination; Determining the current driving condition of the vehicle from preset driving conditions according to the road information and the ambient temperature; Execute the thermal management control strategy corresponding to the driving condition to perform thermal management on the power battery.

2. The method according to claim 1, characterized in that The road information includes the mileage that the vehicle needs to continue to travel, and the acquiring of the road information includes: When the vehicle is in commuting mode, determining a commuting route for the vehicle according to commuting information preset by a user; The mileage that the vehicle needs to continue traveling on the commuting route is calculated to obtain the mileage that the vehicle needs to continue traveling.

3. The method according to claim 2, characterized in that The commuting information preset by the user includes a commuting location, and whether the vehicle is in commuting mode is determined by: When the vehicle is within a preset range of the commuting location, detecting whether the intelligent commuting driving switch of the vehicle is turned on; If on, it is determined that the vehicle is in commuting mode; If not, it is determined that the vehicle is not in commuting mode.

4. The method according to claim 3, characterized in that The commuting location includes a commuting start location and a commuting end location; when the vehicle is within a preset range of the commuting location, detecting whether the intelligent commuting driving switch of the vehicle is turned on includes: During the commuting time period corresponding to the commuting starting location, detecting whether the vehicle is within a preset range of the commuting starting location; If yes, detecting whether the intelligent commuting driving switch of the vehicle is turned on; During the commuting time period corresponding to the commuting end location, detecting whether the vehicle is within a preset range of the commuting end location; If so, it is detected whether the smart commuting driving switch of the vehicle is turned on.

5. The method according to claim 1, characterized in that The road information includes the mileage that the vehicle needs to continue to travel, and the acquiring of the road information includes: When the vehicle is in the navigation mode, the mileage that the vehicle needs to continue traveling is determined based on the navigation route.

6. The method according to any one of claims 1 to 5, characterized in that: The determining the current driving condition of the vehicle from preset driving conditions according to the road information and the ambient temperature includes: Determining, from the preset mileage intervals, the mileage interval to which the vehicle needs to continue traveling belongs; Determine, from the preset temperature intervals, the temperature interval to which the ambient temperature belongs; Determine the current driving condition of the vehicle in combination with the determined mileage interval and the temperature interval; The preset mileage interval includes a long-distance interval and a short-distance interval; the preset temperature interval includes a low-temperature interval and a high-temperature interval; the preset driving conditions include a high-temperature short-distance driving condition, a high-temperature long-distance driving condition, a low-temperature short-distance driving condition and a low-temperature long-distance driving condition.

7. The method according to claim 6, characterized in that The thermal management control strategy corresponding to the high-temperature short-distance driving condition includes: controlling the number of activations of battery cooling to within a preset number of activations; and / or reducing the difference between the trigger temperature for activating battery cooling and the trigger temperature for deactivating battery cooling; The thermal management control strategy corresponding to the high-temperature long-distance driving condition includes: increasing the difference between the trigger temperature for starting battery cooling and the trigger temperature for shutting down battery cooling; and / or reducing the number of starts and stops of the compressor in the thermal management system; The thermal management control strategy corresponding to the low-temperature short-distance driving condition includes: when the driving power output by the power battery meets the target driving power required by the vehicle, suspending triggering of battery heating; The thermal management control strategy corresponding to the low-temperature long-distance driving condition includes: estimating the energy consumption of starting battery heating and the additional available energy after the battery temperature rises, and determining the trigger temperature for starting battery heating based on the energy consumption and the additional available energy.

8. The method according to claim 1, characterized in that The executing the thermal management control strategy corresponding to the driving condition to perform thermal management on the power battery includes: estimating a tolerance rate of driving power according to the vehicle state information, wherein the tolerance rate represents the degree of difference between the driving power actually output by the power battery and the target driving power required by the vehicle; When the tolerance rate exceeds a preset tolerance rate threshold, a thermal management control strategy corresponding to the driving condition is executed to perform thermal management on the power battery.

9. The method according to claim 8, characterized in that The vehicle status information includes at least one of the following: a driving mode corresponding to the vehicle, a driving style corresponding to the vehicle, and a state of charge of the power battery.

10. The method according to any one of claims 1 to 5, characterized in that: The determining the current driving condition of the vehicle from preset driving conditions according to the road information and the ambient temperature includes: Determining whether the vehicle meets a preset fast charging temperature condition; If so, when the mileage that the vehicle needs to continue to travel is in a short-distance interval and the ambient temperature is in a high-temperature interval, determining that the current driving condition of the vehicle is a high-temperature fast-charging temperature preset condition; When the mileage that the vehicle needs to continue to travel is in a short-distance interval and the ambient temperature is in a low-temperature interval, determining that the current driving condition of the vehicle is a low-temperature fast-charging temperature preset condition; The thermal management control strategy corresponding to the low-temperature fast-charging temperature preset working condition is: starting battery heating and increasing the trigger temperature for shutting down battery heating; The control strategy of the high-temperature fast charging temperature preset condition is: starting battery cooling and increasing the trigger temperature for shutting down battery cooling.

11. The method according to claim 10, characterized in that The determining whether the vehicle reaches a preset fast charging temperature condition includes: If it is detected that the user has turned on the fast charging temperature preset function, it is confirmed that the vehicle has reached the fast charging temperature preset conditions; Alternatively, when the vehicle is in navigation mode, it is determined whether the navigation destination is a charging station; if so, it is confirmed that the vehicle meets the preset fast charging temperature condition.

12. A thermal management device for a power battery, characterized in that: The device comprises: An acquisition module, used to acquire road information and ambient temperature, wherein the road information is used to estimate the time taken for the vehicle to travel to a destination; A determination module, configured to determine the current driving condition of the vehicle from preset driving conditions according to the road information and the ambient temperature; The thermal management module is used to execute the thermal management control strategy corresponding to the driving condition and perform thermal management on the power battery.

13. A thermal management control system for a power battery, characterized in that: The system includes a vehicle controller and a thermal management system for a power battery; The vehicle controller is used to execute the steps of the thermal management method for a power battery as described in any one of claims 1 to 11 to control the thermal management system of the power battery.

14. A vehicle, characterized in that: The vehicle includes the thermal management control system of the power battery as claimed in claim 13.

15. 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 a processor, the steps of the thermal management method of the power battery are implemented.

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