Power supply module refrigeration method and device of vehicle, vehicle and storage medium

Abstract

The invention relates to a refrigeration method and device for a power supply module of a vehicle, the vehicle, a storage medium and a heat management system applied to the vehicle. The method comprises the steps that a first heat management mode of the power supply module is determined, and a second heat management mode of a passenger compartment in the vehicle is determined; when it is determined that the first heat management mode is a refrigeration mode and the second heat management mode is a refrigeration mode, the initial target temperature, determined by a control system corresponding to the power supply module, for refrigerating the power supply module is obtained; and according to the initial target temperature, the target refrigeration temperature for refrigerating the power supply module is determined, and the temperature of a cold medium flowing into the power supply module is controlled to be the target refrigeration temperature. Therefore, the system stability during refrigeration of the battery of the vehicle can be improved, meanwhile, the refrigeration requirement for the passenger compartment of the vehicle is guaranteed, the comfort of the passenger compartment is guaranteed, and the user experience is improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle thermal management technology, and in particular to a cooling method and device for a power supply module of a vehicle, a vehicle, and a storage medium. Background Art

[0002] At present, during vehicle operation, thermal management of vehicle batteries plays an important role in the safety of vehicle operation. For the cooling management of vehicle batteries, a cold medium (such as water) with a target cooling temperature is generally flowed into the vehicle battery through a water heater, so that the temperature of the vehicle battery is within a preset range.

[0003] In the related art, the target cooling temperature is generally determined by a BMS (Battery Management System) based on the battery status of the vehicle battery, and after determination, the target cooling temperature is sent to the vehicle's thermal management system so that the thermal management system controls the temperature of the cold medium entering the vehicle battery to be the target cooling temperature.

[0004] However, the target cooling temperature is determined by the BMS based on the battery status, while the thermal management system manages the heat of the entire vehicle. This can easily lead to unstable control of the thermal management system and affect the user experience. Summary of the invention

[0005] The present application provides a method, device, vehicle and storage medium for cooling a power supply module of a vehicle, so as to solve the technical problem in the prior art that the battery is cooled only according to the state of the battery itself, which easily leads to unstable control of the thermal management system and affects the user experience.

[0006] In a first aspect, the present application provides a vehicle power module cooling method, which is applied to a vehicle thermal management system, and the method comprises: Determining a first thermal management mode for the power module, and determining a second thermal management mode for a passenger compartment in the vehicle; When it is determined that the first heat management mode is a cooling mode and the second heat management mode is a cooling mode, obtaining an initial target temperature for cooling the power supply module determined by a control system corresponding to the power supply module; According to the initial target temperature, a target cooling temperature for cooling the power supply module is determined, and the temperature of the cold medium flowing into the power supply module is controlled to be the target cooling temperature.

[0007] As an optional implementation manner, determining a target cooling temperature for cooling the power supply module according to the initial target temperature includes: Determining a corrected temperature value for correcting the initial target temperature; wherein the corrected temperature value is positively correlated with a cooling demand of a passenger compartment in the vehicle; The initial target temperature is corrected according to the corrected temperature value to obtain a target cooling temperature for cooling the power supply module.

[0008] As an optional implementation manner, determining a corrected temperature value for correcting the initial target temperature includes: Determining a target offset temperature value and a target protection factor corresponding to the initial target temperature; The target offset temperature value is multiplied by the target protection coefficient to obtain a corrected temperature value.

[0009] As an optional implementation, the passenger compartment includes a first air conditioner corresponding to a driver's seat and a second air conditioner corresponding to a rear seat, and determining a target offset temperature value and a target protection factor corresponding to the initial target temperature includes: acquiring, when cooling the passenger compartment, a first actual evaporation temperature of the evaporator in the first air conditioner, a second actual evaporation temperature of the evaporator in the second air conditioner, a first target evaporation temperature of the evaporator in the first air conditioner, and a second target evaporation temperature of the evaporator in the second air conditioner; determining a minimum actual evaporation temperature between the first actual evaporation temperature and the second actual evaporation temperature, and determining a minimum target evaporation temperature between the first target evaporation temperature and the second target evaporation temperature; determining a target temperature difference between the minimum actual evaporation temperature and the minimum target evaporation temperature; According to the target temperature difference, a target offset temperature value corresponding to the target temperature difference is determined from a correspondence relationship between a preset temperature difference and an offset temperature value; wherein the temperature difference is positively correlated with the offset temperature value; According to the maximum temperature value of the power supply module within a preset time period, a target protection coefficient corresponding to the maximum temperature value is determined from the corresponding relationship between the preset maximum temperature value and the protection coefficient; wherein the maximum temperature value is negatively correlated with the protection coefficient.

[0010] As an optional implementation, the method further includes: When it is determined that the first heat management mode is a no-demand mode, the target cooling temperature is determined to be an actual temperature value at the inlet of the power supply module. The no-demand mode is used to characterize that the power supply module is neither cooled nor heated.

[0011] As an optional implementation manner, determining the first thermal management mode of the power supply module includes: Receiving a thermal management request sent by a control system of the power supply module; In a case where it is determined that the thermal management request includes a thermal management mode request of the power supply module, determining the thermal management mode included in the thermal management mode request as a first thermal management mode of the power supply module; In a case where it is determined that the thermal management request does not include the thermal management mode request, obtaining a minimum temperature value, a maximum temperature value, and an average temperature value of the power supply module within a preset time period from the thermal management request; A first thermal management mode of the power supply module is determined according to the minimum temperature value, the maximum temperature value, and the average temperature value.

[0012] As an optional implementation manner, determining the first thermal management mode of the power supply module according to the minimum temperature value, the maximum temperature value, and the average temperature value includes: Obtaining the current ambient temperature value of the vehicle; According to the ambient temperature value, from the correspondence between the preset ambient temperature value and the temperature thresholds under different heat management modes, the first temperature threshold corresponding to the heating mode, the second temperature threshold corresponding to the cooling mode, and the third temperature threshold corresponding to the average temperature mode are determined respectively; wherein the correspondence is determined based on the correlation between the ambient temperature value, the temperature value of the power supply module itself, and the discharge power of the power supply module; determining a temperature difference between the maximum temperature value and the minimum temperature value; Comparing the average temperature value with the first temperature threshold and the second temperature threshold to obtain a first comparison result; Comparing the temperature difference with the third temperature threshold to obtain a second comparison result; A first thermal management mode of the power supply module is determined according to the first comparison result and the second comparison result.

[0013] As an optional implementation, the passenger compartment includes a first air conditioner corresponding to a driver's seat and a second air conditioner corresponding to a rear seat, and determining a second heat management mode of the passenger compartment in the vehicle includes: respectively acquiring a first operating mode of the first air conditioner and a second operating mode of the second air conditioner; A second thermal management mode for a passenger compartment within the vehicle is determined based on the first operating mode and the second operating mode.

[0014] In a second aspect, the present application provides a vehicle power module refrigeration device, which is applied to a vehicle heat management system, and the device includes: A first determination module, configured to determine a first thermal management mode of the power supply module and a second thermal management mode of the passenger compartment in the vehicle; a second determination module, configured to obtain an initial target temperature for cooling the power supply module determined by a control system corresponding to the power supply module when it is determined that the first heat management mode is a cooling mode and the second heat management mode is a cooling mode; The control module is used to determine a target cooling temperature for cooling the power supply module according to the initial target temperature, and control the temperature of the cold medium flowing into the power supply module to be the target cooling temperature.

[0015] In a third aspect, the present application provides a vehicle, comprising: a processor and a memory, wherein the processor is used to execute a vehicle power supply module cooling program stored in the memory to implement the vehicle power supply module cooling method described in any one of the first aspects.

[0016] In a fourth aspect, the present application provides a storage medium storing one or more programs, which can be executed by one or more processors to implement the vehicle power supply module cooling method described in any one of the first aspects.

[0017] The technical solution provided in the embodiment of the present application determines the first thermal management module of the power supply module and the thermal management mode of the passenger compartment in the vehicle, so that when it is determined that the thermal management module in the passenger compartment is also for cooling, the target cooling temperature for cooling the power supply module is determined based on the initial target temperature for cooling the power supply module determined by the control system corresponding to the power supply module. By considering the thermal management mode of the passenger compartment, the overall cooling of the vehicle battery and the cooling of the passenger compartment by the thermal management system can be balanced, so that the cooling demand for the passenger compartment can be guaranteed while the power supply module is cooled, thereby improving the system stability when cooling the vehicle battery, while ensuring the cooling demand for the vehicle passenger compartment, ensuring the comfort of the passenger compartment, and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art texts are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0021] Figure 1 A schematic diagram of the structure of a thermal management system for a vehicle provided in an embodiment of the present application; Figure 2 A flow chart of an embodiment of a vehicle power supply module cooling method provided in an embodiment of the present application; Figure 3 A flow chart of another embodiment of a cooling method for a power supply module of a vehicle provided in an embodiment of the present application; Figure 4 A flow chart of another embodiment of a cooling method for a power supply module of a vehicle provided in an embodiment of the present application; Figure 5 A flow chart of another embodiment of a cooling method for a power supply module of a vehicle provided in an embodiment of the present application; Figure 6 A flow chart of an embodiment of a method for cooling a power supply module of a vehicle provided in an embodiment of the present application; Figure 7 A block diagram of an embodiment of a vehicle power supply module refrigeration device provided in an embodiment of the present application; Figure 8 A schematic diagram of the structure of a vehicle provided in an embodiment of the present application. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the embodiments described in the text are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0023] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described in detail below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0024] In order to solve the technical problem in the prior art that cooling the battery only according to the battery state itself can easily lead to unstable control of the thermal management system and affect the user experience, the present application provides a vehicle power supply module cooling method, device, vehicle and storage medium. When the power supply module of the vehicle needs to be cooled, by determining the thermal management module of the power supply module and the thermal management mode of the passenger compartment in the vehicle, when it is determined that the thermal management module in the passenger compartment is also for cooling, the target cooling temperature for cooling the power supply module is determined according to the initial target temperature for cooling the power supply module determined by the control system corresponding to the power supply module. By considering the thermal management mode of the passenger compartment, the overall cooling of the battery of the vehicle and the cooling of the passenger compartment by the thermal management system can be balanced, so that the cooling demand for the passenger compartment can be guaranteed while cooling the power supply module, thereby improving the system stability when cooling the battery of the vehicle, while ensuring the cooling demand for the vehicle passenger compartment, ensuring the comfort of the passenger compartment, and improving the user experience.

[0025] To facilitate understanding of the vehicle power supply module cooling method provided in the embodiment of the present application, the thermal management system of the vehicle involved in the vehicle charging method provided in the present application is first illustrated below.

[0026] See also Figure 1 , is a schematic diagram of the structure of a vehicle thermal management system provided by an embodiment of the present application. Figure 1 As shown, the thermal management system 10 of the vehicle may include an outdoor heat exchanger 11, an electronic expansion valve 12, a front air-conditioning evaporator 13, an electronic expansion valve 14, a rear air-conditioning evaporator 15, a compressor 16, an electronic expansion valve 17, a battery cooler 18, a water heater 19, a battery water pump 20, and a power battery 21.

[0027] in, Figure 1 The heat management system shown is described by taking cooling of the vehicle's power supply module (power battery 21) as an example: The above-mentioned outdoor heat exchanger 11, electronic expansion valve 12, front air-conditioning evaporator 13, electronic expansion valve 14, rear air-conditioning evaporator 15, and compressor 16 constitute an air-conditioning heat management system for the passenger compartment in the vehicle.

[0028] The above-mentioned off-vehicle heat exchanger 11 is used to convert the refrigerant from high-temperature and high-pressure gas to high-temperature and high-pressure liquid by absorbing external heat and releasing heat. The embodiment of the present application does not limit the type and size of the off-vehicle heat exchanger 11. Among them, a fan may be corresponding to the outside of the off-vehicle heat exchanger 11 to increase the heat exchange efficiency between the off-vehicle heat exchanger 11 and the external heat and promote the heat exchange process.

[0029] The electronic expansion valve 12 is used to convert the high-temperature and high-pressure liquid refrigerator into a low-temperature and low-pressure liquid refrigerant, and flow it into the front air-conditioning evaporator 13. The embodiment of the present application does not limit the type and size of the electronic expansion valve 12.

[0030] The above-mentioned front air-conditioning evaporator 13 can be located at the driving position of the vehicle, and is used to convert the incoming low-temperature and low-pressure liquid refrigerant into a gas state by absorbing heat, thereby realizing external cooling. The embodiment of the present application does not limit the type and size of the front air-conditioning evaporator 13.

[0031] The electronic expansion valve 14 is used to convert the high-temperature and high-pressure liquid refrigerator into a low-temperature and low-pressure liquid refrigerant, which flows into the rear air-conditioning evaporator 15 . The embodiment of the present application does not limit the type and size of the electronic expansion valve 14 .

[0032] The above-mentioned rear air-conditioning evaporator 15 can be located at the rear seat of the vehicle, and is used to convert the incoming low-temperature and low-pressure liquid refrigerant into a gas state by absorbing heat, thereby realizing external cooling. The embodiment of the present application does not limit the type and size of the rear air-conditioning evaporator 15.

[0033] The compressor 16 is used to compress the refrigerant into high-temperature and high-pressure gas. The embodiment of the present application does not limit the type and size of the compressor 14.

[0034] The electronic expansion valve 17, the battery cooler 18, the water heater 19, the battery water pump 20, and the power battery 21 may constitute a battery management system for heating the power battery 21 of the vehicle. A temperature sensor may be installed at the inlet of the power battery 21, and the temperature sensor may be used to measure the inlet temperature of the power battery 21.

[0035] The electronic expansion valve 17 is used to convert high-temperature and high-pressure refrigerant into low-temperature and low-pressure refrigerant. The embodiment of the present application does not limit the type and size of the electronic expansion valve 17 .

[0036] The battery cooler 18 is used to cool the water flowing out of the power battery 21 by the inflow of low-temperature and low-pressure refrigerant. The embodiment of the present application does not limit the type and size of the battery cooler 18.

[0037] The water heater 19 may be a PTC (Positive Temperature Coefficient) water heater, which is used to control the temperature of water. The embodiment of the present application does not limit the type and size of the water heater 19 .

[0038] The battery water pump 20 is used to input the cold water cooled by the water heater 19 into the power battery 21, so that the cold water cools the power battery 21, and the cooled hot water flows out from the outlet of the power battery 21 to the battery cooler 18 for cooling, so as to flow back to the water heater 19 for recirculation after cooling. The embodiment of the present application does not limit the types of the battery water pump 20 and the power battery 21.

[0039] In actual applications, the specific process of the heat management system 10 may include: the compressor 16 compresses the refrigerant (such as water) into a high-temperature and high-pressure gas, and the high-temperature and high-pressure gas flows through the external heat exchanger 11. The external heat exchanger 11 converts the high-temperature and high-pressure gas into a high-temperature and high-pressure liquid by absorbing cold energy. The high-temperature and high-pressure liquid can be cooled and reduced in pressure by the electronic expansion valve 12 and the electronic expansion valve 14 to obtain a low-temperature and low-pressure refrigerant. The low-temperature and low-pressure refrigerant flows into the front air-conditioning evaporator 13 and the rear air-conditioning evaporator 15 respectively, and the front air-conditioning evaporator 13 and the rear air-conditioning evaporator 15 convert the low-temperature and low-pressure refrigerant into a high-temperature and high-pressure refrigerant by absorbing heat, thereby realizing the instruction, and the converted high-temperature and high-pressure refrigerant continues to circulate through the compressor 16.

[0040] Among them, a part of the high-temperature and high-pressure liquid refrigerant flowing out of the off-vehicle heat exchanger 11 may be converted into a low-temperature and low-pressure refrigerant by the electronic expansion valve and then flow into the battery cooler 18. Afterwards, the battery cooler 18 can use the low-temperature and low-pressure liquid flowing in to heat the water flowing out of the power battery, and let the heated water flow into the water heater 19. After the water heater 19 cools the water, the cooled water flows into the power battery 21 through the battery water pump 20, thereby cooling the power battery.

[0041] Based on the above-mentioned cooling principle, in the related technology, when cooling the power battery 21, the BMS can determine the temperature of the water used to cool the power battery 21 according to the state of the power battery 21, that is, the target cooling temperature of the water flowing into the power battery 21, and send the target cooling temperature to the thermal management system 10, so that the thermal management system 10 controls the inlet temperature of the water flowing into the power battery 21 to be the target cooling temperature.

[0042] However, the above-mentioned thermal management system may include thermal management of the entire vehicle. The above-mentioned method of determining the target cooling temperature for cooling the power battery 21 only by the state of the power battery 21 itself is likely to cause unstable control of the thermal management system and affect the user experience.

[0043] In this regard, the present application provides a vehicle power supply module cooling method, which can solve the above-mentioned technical problems and improve the system stability when cooling the vehicle's battery, while ensuring the cooling needs of the vehicle's passenger compartment, ensuring the comfort of the passenger compartment, and improving the user experience.

[0044] The vehicle power supply module cooling method provided by the present application is further explained below with reference to specific embodiments in conjunction with the accompanying drawings. The embodiments do not constitute a limitation on the embodiments of the present application.

[0045] See also Figure 2 , is a flow chart of an embodiment of a vehicle power module cooling method provided in an embodiment of the present application. As an embodiment, Figure 1 The process shown can be applied to a vehicle's thermal management system, e.g. Figure 1 The heat management system 10 shown. Figure 2 As shown, the process may include the following steps: S201, determining a first thermal management mode of a power supply module, and determining a second thermal management mode of a passenger compartment in a vehicle.

[0046] The power supply module mentioned above refers to a module that provides power to the vehicle, which can be a power battery of the vehicle, for example Figure 1 The power battery 21 is shown.

[0047] The above-mentioned first thermal management mode refers to the thermal management mode in which the power supply module is currently running or about to run, which may include but is not limited to: cooling mode, heating mode, cooling and heating mode, and no-demand mode.

[0048] The above-mentioned passenger compartment refers to the space inside the vehicle where the cockpit and passenger seats are located.

[0049] The above-mentioned second thermal management mode refers to the thermal management mode that is currently running or about to run in the passenger compartment of the vehicle, which may include but is not limited to: cooling mode, heating mode, cooling and heating mode, and no-demand mode.

[0050] In some embodiments of the present application, the execution subject of the embodiments of the present application may be a thermal management system of the vehicle (for example Figure 1 The thermal management system 10 shown in the figure can control the heat of the power supply module and the passenger compartment in the vehicle. Based on this, in order to ensure the comfort of the passenger compartment, when the thermal management system performs thermal management on the vehicle, the thermal management mode corresponding to the power supply module (for the convenience of distinction, referred to as the first thermal management mode hereinafter) and the thermal management mode of the passenger compartment in the vehicle (for the convenience of distinction, referred to as the second thermal management mode hereinafter) can be determined respectively.

[0051] As for how to determine the first thermal management mode of the power supply module and the second thermal management mode of the passenger compartment in the vehicle, the following will be described respectively. Figure 3 and Figure 4 The process shown is explained and will not be described in detail here.

[0052] S202: When it is determined that the first heat management mode is the cooling mode and the second heat management mode is the cooling mode, obtain an initial target temperature for cooling the power supply module determined by the control system corresponding to the power supply module.

[0053] S203: Determine a target cooling temperature for cooling the power supply module according to the initial target temperature, and control the temperature of the heat medium flowing into the power supply module to be the target cooling temperature.

[0054] The following is a unified description of S202 and S203: The above-mentioned control system refers to a system for controlling the power supply module, such as BMS (Battery Management System).

[0055] The above-mentioned target cooling temperature refers to the temperature value that the power supply module needs to reach when cooling the power supply module. It can also be used as the temperature value when the cold medium flows into the power supply module when cooling the power supply module.

[0056] The above-mentioned cold medium refers to a medium used to cool the power supply module, which can be water or other media, and the embodiment of the present application does not limit this.

[0057] In some embodiments of the present application, after determining the first thermal management mode of the power supply module and the second thermal management mode of the passenger compartment in the vehicle, it can be further determined whether the current thermal management system has a need to cool both the power supply module and the passenger compartment at the same time.

[0058] In some embodiments of the present application, the control system of the power supply module can determine the initial target temperature for cooling the power supply module according to the current operating state of the power supply module.

[0059] Based on this, when it is determined that the first thermal management mode of the power supply module is the cooling mode, and the second thermal management mode of the passenger compartment in the vehicle is the cooling mode, it can be determined that the system mode of the vehicle at this time is passenger compartment cooling and power supply module cooling, indicating that the current thermal management system has the need to cool both the power supply module and the passenger compartment. At this time, the control system of the power supply module can determine the initial target temperature for cooling the power supply module according to the current operating status of the power supply module.

[0060] In this case, in order to improve the comfort in the passenger compartment, the thermal management system can first obtain the initial target temperature determined by the control system corresponding to the power supply module, and determine the target cooling temperature for cooling the power supply module based on the initial target temperature, thereby controlling the temperature of the cold medium flowing into the power supply module to be the above-mentioned target cooling temperature, so as to cool the power supply module while ensuring the comfort in the passenger compartment.

[0061] As for how to determine the target cooling temperature for cooling the power supply module based on the initial target temperature, it can be explained below and will not be described in detail here.

[0062] The technical solution provided by the embodiment of the present application determines a first thermal management mode of the power supply module and a second thermal management mode of the passenger compartment in the vehicle. When it is determined that the first thermal management mode is a cooling mode and the second thermal management mode is a cooling mode, an initial target temperature for cooling the power supply module determined by the control system corresponding to the power supply module is obtained. Based on the above initial target temperature, a target cooling temperature for cooling the power supply module is determined, and the temperature of the heat medium flowing into the power supply module is controlled to be the above target cooling temperature. This technical solution determines the first thermal management module of the power supply module and the thermal management mode of the passenger compartment in the vehicle, and then, when it is determined that the thermal management module in the passenger compartment is also for cooling, determines the target cooling temperature for cooling the power supply module based on the initial target temperature for cooling the power supply module determined by the control system corresponding to the power supply module. By considering the thermal management mode of the passenger compartment, it can balance the cooling of the vehicle's battery and the cooling of the passenger compartment by the overall thermal management system, so that the cooling demand for the passenger compartment can be guaranteed while cooling the power supply module, thereby improving the system stability when cooling the vehicle's battery, while ensuring the cooling demand for the vehicle's passenger compartment, ensuring the comfort of the passenger compartment, and improving the user experience.

[0063] See also Figure 3 , which is a flow chart of an embodiment of another vehicle power supply module cooling method provided in an embodiment of the present application. Figure 3 The process shown in Figure 2 Based on the process shown in FIG. 1 , a specific method for determining the first thermal management mode of the power supply module is described. Figure 3 As shown, the process may include the following steps: S301. Receive a thermal management request sent by a control system of a power supply module.

[0064] S302, determining whether the thermal management request includes a thermal management mode request for the power supply module, if so, executing S303; if not, executing S304.

[0065] S303: Determine the thermal management mode included in the thermal management mode request as the first thermal management mode of the power supply module.

[0066] The following is a unified description of S301 to S303: The control system of the above-mentioned power supply module refers to a system for managing the power supply module. For example, when the power supply module is a battery module, the control system may be a BMS (Battery Management System) system.

[0067] The above-mentioned thermal management request refers to a thermal management request sent by the control system to the thermal management system of the vehicle so that the thermal management system performs thermal management on the power supply module.

[0068] The above-mentioned thermal management mode request refers to the thermal management mode request sent by the control system to the thermal management system after determining the current thermal management mode of the power supply module, so that the thermal management system performs thermal management on the power supply module according to the thermal management mode in the above-mentioned thermal management mode request.

[0069] In some embodiments of the present application, when the control system of the power supply module determines that thermal management is currently being performed on the power supply module, it may send a thermal management request to the executor of the embodiment of the present application, that is, the thermal management system, so that the thermal management system performs thermal management on the power supply module.

[0070] As an optional implementation method, the control system of the power supply module may include a thermal management mode request including the thermal management mode in the above-mentioned thermal management request, and send the thermal management request to the thermal management system, when determining the thermal management mode of the power supply module based on the current operating conditions of the power supply module (such as the current temperature value, operating power, etc.).

[0071] As another optional implementation, the control system of the power supply module may directly send a thermal management request that does not include a thermal management mode request to the thermal management system when the thermal management mode of the power supply module has not been determined.

[0072] Based on this, the thermal management system can receive the thermal management request sent by the control system of the power supply module, and after receiving the thermal management request, determine whether the thermal management request includes a thermal management mode request of the power supply module.

[0073] Optionally, when it is determined that the thermal management request includes a thermal management mode request for the power supply module, the thermal management mode included in the thermal management mode request may be determined as the first thermal management mode of the power supply module.

[0074] Optionally, when it is determined that the thermal management request does not include a thermal management mode request for the power supply module, the following S304 may be continued to be executed.

[0075] S304, obtaining the minimum temperature value, the maximum temperature value, and the average temperature value of the power supply module within a preset time period from the above-mentioned thermal management request.

[0076] S305: Determine a first thermal management mode of the power supply module according to the minimum temperature value, the maximum temperature value, and the average temperature value.

[0077] The following is a unified description of S304 and S305: The above-mentioned preset time period refers to a preset time period for vehicle operation, which may be a cycle of vehicle operation, such as the time period from vehicle startup to the current time, or a preset time period before the current moment, such as within 15 minutes.

[0078] The above-mentioned minimum temperature value refers to the temperature value when the vehicle's power supply module is at its lowest temperature within a preset time period.

[0079] The above-mentioned maximum temperature value refers to the temperature value when the vehicle's power supply module is at its highest temperature within a preset time period.

[0080] The above average temperature value refers to the average temperature value of the entire temperature of the vehicle's power supply module within a preset time period.

[0081] In some embodiments of the present application, the thermal management request sent by the control system of the power supply module may include the minimum temperature value, maximum temperature value, and average temperature value of the power supply module within a preset time period. Based on this, after receiving the thermal management request sent by the above control system, the thermal management system can obtain the minimum temperature value, maximum temperature value, and average temperature value of the power supply module within the preset time period from the thermal management request if it is determined that the thermal management request does not include a thermal management mode request.

[0082] Afterwards, the first thermal management mode of the power supply module can be determined based on the above-mentioned minimum temperature value, maximum temperature value, and average temperature value.

[0083] As an optional implementation, you can Figure 4 The process shown determines the first thermal management mode of the power supply module based on the above-mentioned minimum temperature value, maximum temperature value, and average temperature value.

[0084] See also Figure 4 , which is a flow chart of an embodiment of another method for cooling a power supply module of a vehicle provided in an embodiment of the present application. Figure 4 The process shown describes how to determine the first thermal management mode of the power supply module based on the minimum temperature value, the maximum temperature value, and the average temperature value. Figure 4 As shown, the process may include the following S: S401. Obtain the current ambient temperature value of the vehicle.

[0085] S402. According to the above-mentioned ambient temperature value, from the correspondence between the preset ambient temperature value and the temperature thresholds under different heat management modes, determine the first temperature threshold corresponding to the cooling mode, the second temperature threshold corresponding to the heating mode, and the third temperature threshold corresponding to the uniform temperature mode.

[0086] The following is a unified description of S401 and S402: The above-mentioned ambient temperature value refers to the temperature value corresponding to the vehicle's current environment.

[0087] The first temperature threshold, the second temperature threshold, and the third temperature threshold are temperature thresholds corresponding to different thermal management modes of the power supply module.

[0088] Optionally, the first temperature threshold may be a temperature threshold used to measure whether the thermal management mode of the power supply module is a cooling mode, which may be determined by comparing with the average temperature value to determine whether the thermal management mode of the power supply module is a cooling mode.

[0089] Optionally, the second temperature threshold may be a temperature threshold used to measure whether the thermal management mode of the power supply module is a heating mode, which may be determined by comparing with the average temperature value to determine whether the thermal management mode of the power supply module is a heating mode.

[0090] Optionally, the above-mentioned third temperature threshold may be a temperature threshold used to measure whether the thermal management mode of the power supply module is a uniform temperature mode, which can be determined by comparing with the temperature difference between the highest temperature value and the lowest temperature value to determine whether the thermal management mode of the power supply module is a uniform temperature mode.

[0091] The above correspondence may be a correspondence between the corresponding temperature threshold and the ambient temperature value in different pre-set heat management modes. Optionally, the correspondence may be determined based on the correlation between the ambient temperature value, the temperature value of the power supply module itself, and the discharge power of the power supply module. For example, in the cooling mode, the higher the ambient temperature value, the higher the temperature value of the power supply module itself, and the lower the discharge power, so the corresponding first temperature threshold is lower; in the heating mode, the higher the ambient temperature value, the higher the temperature value of the power supply module itself, and the higher the discharge power, so the corresponding second temperature threshold is higher; in the uniform temperature mode, when the ambient temperature value is within the preset range (for example, 0 to 20 degrees), the maximum temperature difference of the temperature value of the power supply module itself within the preset time period is large, and at this time the discharge power of the power supply module is large, so the corresponding third temperature threshold is also large.

[0092] In some embodiments of the present application, since the thermal management mode of the power supply module may be affected by the current ambient temperature of the vehicle, the thermal management system may obtain the current ambient temperature value of the vehicle, and based on the ambient temperature value, determine the first temperature threshold corresponding to the cooling mode, the second temperature threshold corresponding to the heating mode, and the third temperature threshold corresponding to the uniform temperature mode from the correspondence between the pre-set ambient temperature value and the temperature thresholds under different thermal management modes. Therefore, the thermal management mode of the power supply module can be determined based on the above-mentioned first temperature threshold, second temperature threshold, and third temperature threshold.

[0093] As an optional implementation, a first correspondence between a preset ambient temperature and a first temperature threshold, a second correspondence between the ambient temperature and a second temperature threshold, and a third correspondence between the ambient temperature and a third temperature threshold can be obtained respectively. The first correspondence, the second correspondence, and the third correspondence can be correspondences predetermined by a technician, respectively, which can be stored in a preset storage medium in the form of a table.

[0094] Based on this, as an exemplary implementation, the first temperature threshold corresponding to the ambient temperature value can be determined from the first corresponding relationship according to the ambient temperature value. The first corresponding relationship can be a corresponding relationship between the ambient temperature and the first temperature threshold corresponding to the cooling mode, which is pre-calibrated based on the correlation between the ambient temperature value, the temperature value of the power supply module, and the discharge power of the power supply module. That is, when the average temperature value of the power supply module is greater than the first temperature threshold, the current temperature of the power supply module is too high, and the first thermal management mode of the power supply module can be determined to be the cooling mode. In the first corresponding relationship, the higher the ambient temperature value, the higher the temperature value of the power supply module, and the lower the discharge power, so the corresponding first temperature threshold is lower, so it can be determined that the ambient temperature value is inversely proportional to the first temperature threshold.

[0095] In one embodiment, the first correspondence may be a first table, based on which the thermal management system may use the ambient temperature value as a keyword to search the first table to obtain a first target correspondence containing the keyword, and determine the temperature threshold contained in the first target correspondence as the first temperature threshold corresponding to the ambient temperature value. For example, the first table may be as shown in Table 1 below: Table 1

[0096] Assuming that the ambient temperature value is 20°C, then using it as a keyword to look up the first table shown in Table 1, we can obtain the first target correspondence relationship in which the ambient temperature value is 20°C and the first temperature threshold is 32°C, and the first temperature threshold 32°C contained in the above first target correspondence relationship is determined as the first temperature threshold.

[0097] Optionally, if the corresponding ambient temperature value is not found in the above-mentioned first table, the target temperature range to which the ambient temperature value currently belongs can be determined, and the first temperature difference between the ambient temperature value and the lowest temperature within the target temperature range, as well as the second temperature difference between the ambient temperature value and the highest temperature within the target temperature range can be determined, and the temperature difference ratio between the first temperature difference and the second temperature difference can be determined.

[0098] Based on this, the lowest temperature threshold of the lowest temperature in the target temperature range and the highest temperature threshold of the highest temperature can be proportionally calculated according to the temperature difference ratio to obtain the first temperature threshold corresponding to the ambient temperature value, that is, the first threshold difference between the first temperature threshold and the lowest temperature threshold, and the ratio of the second threshold difference between the highest temperature threshold and the first temperature threshold is the above-mentioned temperature difference ratio.

[0099] For example, if the ambient temperature value is 35°C, then the target temperature range to which the ambient temperature value belongs is (33, 36), then the first temperature difference is 2°C, the second temperature difference is 1°C, and the temperature difference ratio is 2. After that, it can be determined that the minimum temperature threshold corresponding to the target temperature range is 30°C, and the maximum temperature threshold is 28°C. Then, by calculating the minimum temperature threshold, the maximum temperature threshold, and the temperature difference ratio, the first temperature threshold can be obtained as 28.67.

[0100] As an exemplary implementation, the second temperature threshold corresponding to the ambient temperature value can be determined from the second corresponding relationship according to the above ambient temperature value. The above second corresponding relationship can be a correspondence between the ambient temperature and the second temperature threshold corresponding to the heating mode, which is pre-calibrated based on the correlation between the ambient temperature value, the temperature value of the power supply module itself, and the discharge power of the power supply module. That is, when the average temperature value of the power supply module is less than the second temperature threshold, the current temperature of the power supply module is too low, and the first thermal management mode of the power supply module can be determined to be the heating mode. In the second corresponding relationship, the higher the ambient temperature value, the higher the temperature value of the power supply module itself, the higher the discharge power, and therefore the higher the corresponding second temperature threshold. Then it can be determined that the ambient temperature value is proportional to the second temperature threshold.

[0101] In one embodiment, the second correspondence may be a second table, based on which the thermal management system may use the ambient temperature value as a keyword to search the second table to obtain a second target correspondence containing the keyword, and determine the temperature threshold contained in the second target correspondence as the second temperature threshold corresponding to the ambient temperature value. For example, the second table may be as shown in Table 2 below: Table 2

[0102] Assuming that the ambient temperature value is 5°C, then using it as the keyword to look up the second table shown in Table 2, we can obtain the second target correspondence relationship in which the ambient temperature value is 5°C and the second temperature threshold is 12°C, and the second temperature threshold 12°C contained in the above second target correspondence relationship is determined as the second temperature threshold.

[0103] Optionally, if the corresponding ambient temperature value is not found in the above-mentioned second table, the target temperature range to which the ambient temperature value currently belongs can be determined, and the first temperature difference between the ambient temperature value and the lowest temperature within the target temperature range, as well as the second temperature difference between the ambient temperature value and the highest temperature within the target temperature range can be determined, and the temperature difference ratio between the first temperature difference and the second temperature difference can be determined.

[0104] Based on this, the lowest temperature threshold of the lowest temperature in the target temperature range and the highest temperature threshold of the highest temperature can be proportionally calculated according to the temperature difference ratio to obtain the second temperature threshold corresponding to the ambient temperature value, that is, the ratio of the first threshold difference between the second temperature threshold and the lowest temperature threshold to the second threshold difference between the highest temperature threshold and the second temperature threshold is the above-mentioned temperature difference ratio.

[0105] As an exemplary implementation, the third temperature threshold corresponding to the ambient temperature value can be determined from the third corresponding relationship according to the ambient temperature value. The third corresponding relationship can be a corresponding relationship between the ambient temperature calibrated in advance based on the correlation between the ambient temperature value, the temperature value of the power supply module, and the discharge power of the power supply module and the third temperature threshold corresponding to the average temperature mode, that is, when the temperature difference of the power supply module changes greatly within the preset time period, the temperature change of the power supply module is large, and the first thermal management mode of the power supply module can be determined to be the average temperature mode. In the third corresponding relationship, when the ambient temperature value is within the preset range (for example, 0 to 20 degrees), the maximum temperature difference of the temperature value of the power supply module itself within the preset time period is large, and the discharge power of the power supply module is large, then the corresponding third temperature threshold is also large.

[0106] In one embodiment, the third correspondence may be a third table, based on which the thermal management system may use the ambient temperature value as a keyword to search the third table to obtain a third target correspondence containing the keyword, and determine the temperature threshold contained in the third target correspondence as the third temperature threshold corresponding to the ambient temperature value. For example, the third table may be as shown in Table 3 below: Table 3

[0107] Assuming that the ambient temperature value is 5°C, then using it as a keyword to look up the third table shown in Table 3, we can obtain the third target correspondence relationship in which the ambient temperature value is 5°C and the third temperature threshold is 7°C, and the third temperature threshold 7°C contained in the above third target correspondence relationship is determined as the third temperature threshold.

[0108] Optionally, if the corresponding ambient temperature value is not found in the above-mentioned third table, the target temperature range to which the ambient temperature value currently belongs can be determined, and the first temperature difference between the ambient temperature value and the lowest temperature within the target temperature range, as well as the second temperature difference between the ambient temperature value and the highest temperature within the target temperature range can be determined, and the temperature difference ratio between the first temperature difference and the second temperature difference can be determined.

[0109] Based on this, the lowest temperature threshold of the lowest temperature in the target temperature range and the highest temperature threshold of the highest temperature can be proportionally calculated according to the temperature difference ratio to obtain the third temperature threshold corresponding to the ambient temperature value, that is, the ratio of the first threshold difference between the third temperature threshold and the lowest temperature threshold to the second threshold difference between the highest temperature threshold and the third temperature threshold is the above-mentioned temperature difference ratio.

[0110] S403: Determine the temperature difference between the highest temperature value and the lowest temperature value.

[0111] S404: Compare the average temperature value with the first temperature threshold and the second temperature threshold to obtain a first comparison result.

[0112] S405: Compare the temperature with a third temperature threshold to obtain a second comparison result.

[0113] S406: Determine a first thermal management mode of the power supply module according to the first comparison result and the second comparison result.

[0114] The following is a unified description of S403 to S406: In some embodiments of the present application, the thermal management system may first determine the temperature difference between the highest temperature value and the lowest temperature value, and determine the first thermal management mode of the power supply module based on the above temperature difference, the average temperature value, the first temperature threshold, the second temperature threshold, and the third temperature threshold.

[0115] As an optional implementation, the average temperature value may be compared with the first temperature threshold and the second temperature threshold to obtain a first comparison result, and the temperature difference may be compared with the third temperature threshold to obtain a second comparison result, and the first thermal management mode of the power supply module may be determined based on the first comparison result and the second comparison result. The first temperature threshold is greater than the second temperature threshold.

[0116] Optionally, when the above-mentioned first comparison result indicates that the average temperature value is greater than the first temperature threshold, it means that the average temperature of the power supply module is high at this time and needs to be cooled in time. Therefore, it can be determined that the first thermal management mode of the power supply module is the cooling mode.

[0117] Optionally, when the above-mentioned first comparison result indicates that the average temperature value is less than the second temperature threshold, it means that the average temperature of the power supply module is low at this time and needs to be heated in time. Therefore, it can be determined that the first thermal management mode of the power supply module is the heating mode.

[0118] Optionally, when the first comparison result indicates that the average temperature is less than or equal to the first temperature threshold and greater than or equal to the second temperature threshold, the temperature difference may be compared with a third temperature threshold to obtain a second comparison result.

[0119] Optionally, when the second comparison result indicates that the temperature difference is greater than the third temperature threshold, it may indicate that the current temperature variation of the power supply module is large, and therefore it may be determined that the first thermal management module of the power supply module is in the uniform temperature mode.

[0120] Optionally, when the second comparison result indicates that the temperature difference is less than or equal to the third temperature threshold, it can indicate that the current temperature change of the power supply module is small and no thermal management is required. Therefore, it can be determined that the first thermal management mode of the power supply module is a no-demand mode.

[0121] This completes the Figure 4 Description of the process shown.

[0122] The technical solution provided by the embodiment of the present application determines whether the thermal management request includes a thermal management mode request of the power supply module by receiving a thermal management request sent by the control system of the power supply module. If so, the thermal management mode included in the thermal management mode request is determined as the first thermal management mode of the power supply module; if not, the minimum temperature value, the maximum temperature value, and the average temperature value of the power supply module within a preset time period are obtained from the thermal management request, and the first thermal management mode of the power supply module is determined according to the minimum temperature value, the maximum temperature value, and the average temperature value. This technical solution realizes efficient and rapid determination of the thermal management mode of the power supply module by sending a thermal management request to the thermal management system according to the control system of the power supply module, and quickly determining the thermal management mode of the power supply module according to the thermal management mode request in the thermal management request, and / or the average temperature value, the minimum temperature value, and the maximum temperature value of the power supply module within a preset time period.

[0123] See also Figure 5 , which is a flow chart of an embodiment of another vehicle power supply module cooling method provided in an embodiment of the present application. Figure 5 The process shown in Figure 2 Based on the process shown, it is described how to determine the second heat management mode of the passenger compartment in the vehicle when the passenger compartment includes a first air conditioner corresponding to the driver's seat and a second air conditioner corresponding to the rear seats. Figure 5 As shown, the process may include the following steps: S501 : Acquire a first operating mode of a first air conditioner and a second operating mode of a second air conditioner respectively.

[0124] S502: Determine a second heat management mode of the passenger compartment in the vehicle according to the first operating mode and the second operating mode.

[0125] The following is a unified description of S501 and S502: The above-mentioned first air conditioner refers to the air conditioner corresponding to the driving seat of the vehicle, which is the front air conditioner in the vehicle.

[0126] The above-mentioned first operating mode refers to the current operating mode of the above-mentioned first air conditioner, which may include but is not limited to: no-demand mode, ventilation mode, cooling mode, heating mode, and cooling and heating mode, etc.

[0127] The above-mentioned second air conditioner refers to the air conditioner corresponding to the rear seats of the vehicle, which is the rear air conditioner in the vehicle.

[0128] The second operating mode refers to the current operating mode of the second air conditioner, which may include but is not limited to: no-demand mode, ventilation mode, cooling mode, heating mode, cooling and heating mode, etc.

[0129] In some embodiments of the present application, when determining the second thermal management mode of the passenger compartment in the vehicle, the operating mode of the air conditioner in the passenger compartment in the vehicle can be obtained, and the second thermal management mode of the passenger compartment can be determined based on the operating mode.

[0130] The air conditioner of the passenger compartment in the vehicle may include a first air conditioner and a second air conditioner. Based on this, the thermal management system may obtain a first operating mode of the first air conditioner and a second operating mode of the second air conditioner, and determine a second thermal management mode of the passenger compartment according to the first operating mode and the second operating mode.

[0131] Optionally, when the above-mentioned first operating mode is a cooling mode, it can be determined that the second heat management mode of the passenger compartment is a cooling mode.

[0132] Optionally, when the above-mentioned first operating mode is a non-demand mode or a ventilation mode, and the second operating mode is a cooling mode or a cooling and heating mode, the second heat management mode of the passenger compartment is determined to be a cooling mode.

[0133] Optionally, when the first operating mode is the heating mode and the second operating mode is the cooling mode or the cooling and heating mode, the second heat management mode of the passenger compartment is determined to be the cooling and heating mode.

[0134] Optionally, when the above-mentioned first operating mode is the cooling and heating mode, the second heat management mode of the passenger compartment is determined to be the cooling and heating mode.

[0135] The technical solution provided in the embodiment of the present application determines the second thermal management mode of the passenger compartment in the vehicle according to the first operating mode and the second operating mode of the second air conditioner by respectively acquiring the first operating mode of the first air conditioner and the second operating mode of the second air conditioner. This technical solution determines the second thermal management mode of the passenger compartment in the vehicle according to the first operating mode of the first air conditioner in the front row and the second operating mode of the second air conditioner in the rear row in the passenger compartment of the vehicle. It determines the second thermal management mode of the passenger compartment by referring to the operating mode of the air conditioner of the whole vehicle, and can achieve more accurate determination of the thermal management mode of the passenger compartment.

[0136] See also Figure 6 , is a flow chart of an embodiment of a vehicle power supply module cooling method provided in an embodiment of the present application. Figure 6 The process shown in the figure describes how to determine the target cooling temperature for cooling the power module based on the initial target temperature. Figure 6 As shown, the process may include the following steps: S601. Determine a corrected temperature value for correcting an initial target temperature, wherein the corrected temperature value is positively correlated with a cooling demand of a passenger compartment in a vehicle.

[0137] S602: Correct the initial target temperature according to the corrected temperature value to obtain a target cooling temperature for cooling the power supply module.

[0138] The following is a unified description of S601 and S602: The above-mentioned corrected temperature value refers to the temperature value corrected for the cooling demand of the power supply module in order to balance the cooling demand of the passenger compartment in the vehicle.

[0139] In some embodiments of the present application, since the current power supply module and the passenger compartment in the vehicle are both in cooling mode, in order to ensure the comfort of the passenger compartment in the vehicle, the execution subject of the embodiment of the present application can determine the correction temperature value corresponding to the initial target temperature after determining the initial target temperature determined by the control system corresponding to the power supply module, and correct the initial target temperature according to the correction temperature value, so as to obtain the target heating temperature for cooling the power supply module. Among them, the above-mentioned correction temperature value can be positively correlated with the heating demand of the passenger compartment in the vehicle, that is, the greater the current cooling demand in the passenger compartment, the greater the correction temperature value.

[0140] In some embodiments of the present application, when the system is in a dual cooling mode of passenger compartment cooling and power supply module cooling, in order to ensure that the comfort of the passenger compartment is prioritized, the control target first meets the passenger compartment requirements and then meets the power supply requirements. The thermal management system can obtain the target offset temperature value and target protection coefficient for adjusting the initial target temperature, and multiply the target offset temperature value by the target protection coefficient to obtain a corrected temperature value. The above-mentioned target offset temperature value refers to the offset temperature value for correcting the initial target temperature. The above-mentioned target protection coefficient refers to the adjustment coefficient corresponding to the above-mentioned target offset temperature value. The target protection coefficient can be used to prevent the temperature of the power supply module from being too high, thereby ensuring the safety of the operation of the power supply module.

[0141] As an optional implementation, when cooling the passenger compartment, the evaporator (eg Figure 1 The first actual evaporation temperature of the front air conditioner evaporator 13 shown, the second air conditioner evaporator (eg Figure 1 The second actual evaporation temperature of the front air conditioner evaporator 15 shown in the figure, the first target evaporation temperature of the first evaporator, and the second target evaporation temperature of the evaporator in the second air conditioner. The first air conditioner refers to the air conditioner corresponding to the driver's seat included in the passenger compartment, the second air conditioner refers to the air conditioner corresponding to the rear seat, the first actual evaporation temperature refers to the current actual temperature value of the evaporator of the first air conditioner, the second actual evaporation temperature refers to the current actual temperature value of the evaporator of the second air conditioner, the first target evaporator refers to the temperature value set to be reached when the evaporator of the first air conditioner is cooled, and the second target evaporator refers to the temperature value set to be reached when the evaporator of the second air conditioner is cooled.

[0142] Afterwards, the minimum actual evaporation temperature between the first actual evaporation temperature and the second actual evaporation temperature may be determined, and the minimum target evaporation temperature between the first target evaporation temperature and the second target evaporation temperature may be determined. The minimum actual evaporation temperature refers to the minimum value between the first actual evaporation temperature and the second actual evaporation temperature, and the minimum target evaporation temperature refers to the minimum value between the first target evaporation temperature and the second target evaporation temperature.

[0143] Afterwards, a target temperature difference between the minimum actual evaporation temperature and the minimum target evaporation temperature may be determined. The target temperature difference may be obtained by subtracting the minimum actual evaporation temperature from the minimum target evaporation temperature.

[0144] Thereafter, the target offset temperature value corresponding to the target temperature difference can be determined from the correspondence between the preset temperature difference and the offset temperature value according to the above target temperature difference, wherein the above temperature difference can be positively correlated with the offset temperature value, that is, the larger the temperature difference, the larger the offset temperature value.

[0145] As an exemplary implementation, the above correspondence may be a correspondence between a predetermined temperature difference and an offset temperature value. The correspondence may be a table or a functional relationship, and the embodiment of the present application does not impose any limitation on this.

[0146] Based on this, when the above correspondence is a table, the above table can be searched with the above target temperature difference as a keyword to obtain a target correspondence containing the keyword, and the offset temperature value contained in the above target correspondence is determined as the target offset temperature value. The table containing the correspondence between the temperature difference and the offset temperature value can be shown in Table 4 below: Table 4

[0147] Finally, based on the maximum temperature value of the power supply module within the preset time period, the target protection coefficient corresponding to the maximum temperature value can be determined from the correspondence between the preset maximum temperature value and the protection coefficient, wherein the above-mentioned maximum temperature value is negatively correlated with the protection coefficient, that is, the larger the maximum temperature value, the smaller the protection coefficient, thereby ensuring that the temperature value of the power supply module will not be too high, thereby ensuring the safety of the operation of the power supply module.

[0148] As an exemplary implementation, the above correspondence may be a correspondence between a predetermined maximum temperature value and a protection factor. The correspondence may be a table or a functional relationship, and the embodiment of the present application does not impose any limitation on this.

[0149] Based on this, when the above correspondence is a table, the above table can be searched with the above maximum temperature value as a keyword to obtain a target correspondence containing the keyword, and the protection factor contained in the above target correspondence is determined as the target protection factor. Among them, the table containing the correspondence between the maximum temperature value and the protection factor can be shown in the following Table 5: Table 5

[0150] As an optional implementation method, in order to ensure the comfort of the passenger compartment in the vehicle, that is, to ensure the cooling demand of the passenger compartment in the vehicle, the above-mentioned initial target temperature can be added to the above-mentioned corrected temperature value to obtain the target cooling temperature for cooling the power supply module.

[0151] The technical solution provided in the embodiment of the present application determines a corrected temperature value for correcting the initial target temperature, wherein the corrected temperature value is positively correlated with the cooling demand of the passenger compartment in the vehicle, and corrects the initial target temperature according to the corrected temperature value to obtain the target cooling temperature for cooling the power supply module. This technical solution can correct the initial target temperature determined by the control system according to the determined corrected temperature value while cooling the power supply module and the passenger compartment of the vehicle at the same time, thereby ensuring the cooling demand in the passenger compartment while meeting the cooling demand for the power supply module, and more accurately determining the target cooling temperature of the power supply module when cooling the passenger compartment and the power supply module of the vehicle at the same time, thereby ensuring the comfort of the passenger compartment in the vehicle while cooling the power supply module.

[0152] In some embodiments of the present application, when the first heat management mode is determined to be a no-demand mode, it means that no adjustment is required when cooling the power module at this time, so the target cooling temperature can be determined to be the actual temperature value at the inlet of the power module. The above-mentioned actual temperature value refers to the measured temperature value at the inlet of the cold medium flowing into the power module.

[0153] See also Figure 7 , is a block diagram of an embodiment of a vehicle power module refrigeration device provided in an embodiment of the present application. As an embodiment, the device can be applied to a vehicle thermal management system, such as Figure 1 The heat management system 10 shown. Figure 7 As shown, the device may include: A first determination module 71, configured to determine a first thermal management mode of the power supply module and a second thermal management mode of the passenger compartment in the vehicle; A second determination module 72 is used to obtain an initial target temperature for cooling the power supply module determined by the control system corresponding to the power supply module when it is determined that the first heat management mode is a cooling mode and the second heat management mode is a cooling mode; The control module 73 is used to determine a target cooling temperature for cooling the power supply module according to the initial target temperature, and control the temperature of the cold medium flowing into the power supply module to be the target cooling temperature.

[0154] like Figure 8 As shown, it is a schematic diagram of the structure of a vehicle provided in an embodiment of the present application, including a processor 81, a communication interface 82, a memory 83 and a communication bus 84, wherein the processor 81, the communication interface 82, and the memory 83 communicate with each other through the communication bus 84. A memory 83, for storing computer programs; In one embodiment of the present application, the processor 81 is used to execute the program stored in the memory 83 to implement the vehicle power supply module cooling method provided by any one of the above method embodiments, including: Determining a first thermal management mode for the power module, and determining a second thermal management mode for a passenger compartment in the vehicle; When it is determined that the first heat management mode is a cooling mode and the second heat management mode is a cooling mode, obtaining an initial target temperature for cooling the power supply module determined by a control system corresponding to the power supply module; According to the initial target temperature, a target cooling temperature for cooling the power supply module is determined, and the temperature of the cold medium flowing into the power supply module is controlled to be the target cooling temperature.

[0155] An embodiment of the present application also provides a storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of the vehicle power supply module cooling method provided in any of the aforementioned method embodiments are implemented.

[0156] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the present embodiment.

[0157] Through the text of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a general hardware platform, and of course, by hardware. Based on this understanding, the above technical solution, in essence or in other words, the part that contributes to the relevant technology, can be embodied in the form of a software product, which can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0158] It should be understood that the terms used in the text are only for the purpose of the specific example implementation of the text, and are not intended to be limited. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used in the text can also be represented to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of the stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or their combinations. The method steps, processes, and operations of the text in the text are not interpreted as necessarily requiring them to be performed in the specific order of the text or description, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps can be used.

[0159] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A cooling method for a power supply module of a vehicle, characterized in that: A thermal management system for a vehicle, the method comprising: Determining a first thermal management mode for the power module, and determining a second thermal management mode for a passenger compartment in the vehicle; When it is determined that the first heat management mode is a cooling mode and the second heat management mode is a cooling mode, obtaining an initial target temperature for cooling the power supply module determined by a control system corresponding to the power supply module; According to the initial target temperature, a target cooling temperature for cooling the power supply module is determined, and the temperature of the cold medium flowing into the power supply module is controlled to be the target cooling temperature.

2. The vehicle power supply module cooling method according to claim 1, characterized in that: Determining a target cooling temperature for cooling the power supply module according to the initial target temperature includes: Determining a corrected temperature value for correcting the initial target temperature; wherein the corrected temperature value is positively correlated with a cooling demand of a passenger compartment in the vehicle; The initial target temperature is corrected according to the corrected temperature value to obtain a target cooling temperature for cooling the power supply module.

3. The vehicle power supply module cooling method according to claim 2, characterized in that: Determining a corrected temperature value for correcting the initial target temperature includes: Determining a target offset temperature value and a target protection factor corresponding to the initial target temperature; The target offset temperature value is multiplied by the target protection coefficient to obtain a corrected temperature value.

4. The vehicle power supply module cooling method according to claim 3, characterized in that: The passenger compartment includes a first air conditioner corresponding to a driver's seat and a second air conditioner corresponding to a rear seat, and determining a target offset temperature value and a target protection factor corresponding to the initial target temperature includes: acquiring, when cooling the passenger compartment, a first actual evaporation temperature of the evaporator in the first air conditioner, a second actual evaporation temperature of the evaporator in the second air conditioner, a first target evaporation temperature of the evaporator in the first air conditioner, and a second target evaporation temperature of the evaporator in the second air conditioner; determining a minimum actual evaporation temperature between the first actual evaporation temperature and the second actual evaporation temperature, and determining a minimum target evaporation temperature between the first target evaporation temperature and the second target evaporation temperature; determining a target temperature difference between the minimum actual evaporation temperature and the minimum target evaporation temperature; According to the target temperature difference, a target offset temperature value corresponding to the target temperature difference is determined from a correspondence relationship between a preset temperature difference and an offset temperature value; wherein the temperature difference is positively correlated with the offset temperature value; According to the maximum temperature value of the power supply module within a preset time period, a target protection coefficient corresponding to the maximum temperature value is determined from the corresponding relationship between the preset maximum temperature value and the protection coefficient; wherein the maximum temperature value is negatively correlated with the protection coefficient.

5. The vehicle power supply module cooling method according to claim 1, characterized in that: The method further comprises: When it is determined that the first heat management mode is a no-demand mode, the target cooling temperature is determined to be an actual temperature value at the inlet of the power supply module. The no-demand mode is used to characterize that the power supply module is neither cooled nor heated.

6. The vehicle power supply module cooling method according to claim 1, characterized in that: Determining a first thermal management mode of the power supply module includes: Receiving a thermal management request sent by a control system of the power supply module; In a case where it is determined that the thermal management request includes a thermal management mode request of the power supply module, determining the thermal management mode included in the thermal management mode request as a first thermal management mode of the power supply module; In a case where it is determined that the thermal management request does not include the thermal management mode request, obtaining a minimum temperature value, a maximum temperature value, and an average temperature value of the power supply module within a preset time period from the thermal management request; A first thermal management mode of the power supply module is determined according to the minimum temperature value, the maximum temperature value, and the average temperature value.

7. The vehicle power supply module cooling method according to claim 6, characterized in that: Determining a first thermal management mode of the power supply module according to the minimum temperature value, the maximum temperature value, and the average temperature value includes: Obtaining the current ambient temperature value of the vehicle; According to the ambient temperature value, from the correspondence between the preset ambient temperature value and the temperature thresholds under different heat management modes, the first temperature threshold corresponding to the heating mode, the second temperature threshold corresponding to the cooling mode, and the third temperature threshold corresponding to the average temperature mode are determined respectively; wherein the correspondence is determined based on the correlation between the ambient temperature value, the temperature value of the power supply module itself, and the discharge power of the power supply module; determining a temperature difference between the maximum temperature value and the minimum temperature value; Comparing the average temperature value with the first temperature threshold and the second temperature threshold to obtain a first comparison result; Comparing the temperature difference with the third temperature threshold to obtain a second comparison result; A first thermal management mode of the power supply module is determined according to the first comparison result and the second comparison result.

8. The vehicle power supply module cooling method according to claim 1, characterized in that: The passenger compartment includes a first air conditioner corresponding to a driver's seat and a second air conditioner corresponding to a rear seat, and determining a second heat management mode of the passenger compartment in the vehicle includes: respectively acquiring a first operating mode of the first air conditioner and a second operating mode of the second air conditioner; A second thermal management mode for a passenger compartment within the vehicle is determined based on the first operating mode and the second operating mode.

9. A vehicle power supply module refrigeration device, characterized in that: A thermal management system for a vehicle, the device comprising: A first determination module, configured to determine a first thermal management mode of the power supply module and a second thermal management mode of the passenger compartment in the vehicle; a second determination module, configured to obtain an initial target temperature for cooling the power supply module determined by a control system corresponding to the power supply module when it is determined that the first heat management mode is a cooling mode and the second heat management mode is a cooling mode; The control module is used to determine a target cooling temperature for cooling the power supply module according to the initial target temperature, and control the temperature of the cold medium flowing into the power supply module to be the target cooling temperature.

10. A vehicle, characterized in that: include: A processor and a memory, wherein the processor is used to execute a vehicle power supply module cooling program stored in the memory to implement the vehicle power supply module cooling method according to any one of claims 1 to 8.

11. A storage medium, characterized in that: The storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to implement the vehicle power supply module cooling method described in any one of claims 1 to 8.

Images