Thermal management system, thermal management method and vehicle

Abstract

The present application relates to a thermal management system, a thermal management method and a vehicle, and relates to the technical field of vehicles, the thermal management system (10) comprising: a battery (101); an electric drive (102); a first energy storage device (103) coupled to the battery (101); the heat exchanger is configured to perform heat exchange with the battery (101); a second energy storage device (104) coupled to the electric drive (102); the heat exchanger is configured to exchange heat with the electric drive (102). Thus, the heat of the battery is recycled through the first energy storage device, the battery is heated under the condition that the battery needs to be heated, the heat of the electric drive is recycled through the second energy storage device, the recycled heat is utilized, and therefore the heat of the vehicle is effectively utilized.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, specifically to a thermal management system, a thermal management method, and a vehicle. Background Technology

[0002] As the power source of electric vehicles, the battery draws current through the battery and high-power devices such as the electric drive unit during operation. Due to the resistance within these high-power devices, heat is inevitably generated. This results in some of the electric vehicle's electrical energy being consumed as heat, and the more heat is consumed, the greater the impact on the electric vehicle's driving range.

[0003] Related technical solutions disclose a waste heat recovery system for electric vehicles, specifically proposing to utilize the principle that the motor heats up faster than the battery during the initial stage of vehicle startup, and to introduce the motor's waste heat into the battery circulation system. However, the utilization of waste heat in this process is limited to direct heat utilization. Even after the battery has been used for a period of time and its heat is sufficient, a significant amount of heat from the electric drive is still wasted. Related technical solutions also disclose a vehicle thermal management system and an electric vehicle. The vehicle thermal management system mainly employs heat management methods to reduce heat waste, but the heat generated by the electric drive and battery pack still exists and is still wasted during vehicle use. Therefore, how to utilize the vehicle's heat is a pressing technical problem that needs to be solved. Summary of the Invention

[0004] One of the purposes of this application is to provide a thermal management system, thermal management method, and vehicle for effectively utilizing the heat of the vehicle.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0006] According to a first aspect of this application, a thermal management system is provided for use in a vehicle. The thermal management system includes: a battery; an electric drive; a first energy storage device coupled to the battery and configured to exchange heat with the battery; and a second energy storage device coupled to the electric drive and configured to exchange heat with the electric drive.

[0007] In one possible embodiment, the energy storage medium of both the first and second energy storage devices is a phase change material. The phase change temperature of the energy storage medium in the first energy storage device is less than or equal to a first temperature, and the phase change temperature of the energy storage medium in the second energy storage device is less than or equal to a second temperature. The first temperature is the highest temperature reached by the battery in its operating state, and the second temperature is the highest temperature reached by the electric drive in its operating state.

[0008] In one possible configuration, the first energy storage device is specifically configured to recover heat from the battery when its temperature is within a first recovery temperature range. The second energy storage device is specifically configured to recover heat from the electric drive when its temperature is within a second recovery temperature range; the highest temperature in the first recovery temperature range is lower than the lowest temperature in the second recovery temperature range.

[0009] In one possible configuration, the first energy storage device is also connected to an electric drive. Specifically, the first energy storage device is configured to: recover heat from the battery and the electric drive when its temperature is within a third recovery temperature range; and recover heat from the electric drive when its temperature is within a fourth recovery temperature range. The highest temperature in the third recovery temperature range is lower than the lowest temperature in the fourth recovery temperature range.

[0010] In one possible configuration, the electric drive is connected to the battery. The electric drive is configured to heat the battery using its heat when the battery temperature is below a first heating temperature, the temperature of the first energy storage device is within the first heating temperature range, and the temperature of the second energy storage device is within the second heating temperature range.

[0011] In one possible embodiment, the thermal management system further includes an engine, which is coupled to a first energy storage device and a second energy storage device, respectively. The first and second energy storage devices are also configured to recover heat from the engine when it is started.

[0012] In one possible embodiment, the thermal management system further includes a heating system coupled to both the first and second energy storage devices. The heating system is configured to heat both the first and second energy storage devices using heat from its heaters, while the battery is charging, the temperature of the first energy storage device is within a fifth recovery temperature range, and the temperature of the second energy storage device is within a sixth recovery temperature range.

[0013] In one possible configuration, the first and second energy storage devices are also configured to provide heat to the heating system when it is activated.

[0014] In one possible embodiment, the thermal management system further includes a compressor, which is coupled to both a first energy storage device and a second energy storage device. The first and second energy storage devices are further configured to absorb cooling capacity from the compressor when the battery is charging, the temperature of the first energy storage device is within a first cooling temperature range, and the temperature of the second energy storage device is within a second cooling temperature range.

[0015] In one possible configuration, the first energy storage device is further configured to cool the battery when the temperature of the first energy storage device is in a third cooling temperature range, the temperature of the second energy storage device is in a fourth cooling temperature range, and the battery temperature is greater than or equal to the third temperature. The second energy storage device is further configured to cool the battery when the temperature of the first energy storage device is in a fifth cooling temperature range and the temperature of the second energy storage device is in a sixth cooling temperature range.

[0016] In one possible configuration, the first energy storage device, the second energy storage device, the battery, and the electric drive are connected via multiple connecting valves.

[0017] In one possible configuration, the multiple connecting valves include: a first three-way valve, a second three-way valve, a third three-way valve, a fourth three-way valve, a four-way valve, and a check valve. The first port of the first three-way valve is connected to one end of the battery; the second port of the first three-way valve is connected to the first interface of the first energy storage device; the third port of the first three-way valve is connected to the first port of the fourth three-way valve; the first port of the second three-way valve is connected to the first interface of the second energy storage device; the second port of the second three-way valve is connected to one end of the electric drive; the third port of the second three-way valve is connected to the first port of the third three-way valve; the second port of the third three-way valve is connected to the first port of the four-way valve; the third port of the third three-way valve is connected to the other end of the battery; the second port of the fourth three-way valve is connected to the other end of the electric drive; the second port of the fourth three-way valve is connected to the second port of the four-way valve; the third port of the four-way valve is connected to the second interface of the first energy storage device; the fourth port of the four-way valve is connected to the outlet of the first check valve; and the inlet of the first check valve is connected to the second interface of the second energy storage device.

[0018] In one possible configuration, the thermal management system further includes: a fifth three-way valve, an engine, and a first three-way pipe. The first port of the fifth three-way valve is connected to the second interface of the second energy storage device, the second port of the fifth three-way valve is connected to the inlet of the first one-way valve, the third port of the fifth three-way valve is connected to one end of the engine, the first port of the first three-way pipe is connected to the other end of the engine, the second port of the first three-way pipe is connected to the first interface of the second energy storage device, and the third port of the first three-way pipe is connected to the first port of the second three-way valve.

[0019] According to a second aspect of this application, a thermal management method is provided, applied to a thermal management system as described in the first aspect; the method includes: acquiring the temperature of the energy storage medium of a first energy storage device and the temperature of the energy storage medium of a second energy storage device. When the temperature of the energy storage medium in the first energy storage device meets a first heat exchange condition, heat exchange occurs between the first energy storage device and a battery. When the temperature of the energy storage medium in the second energy storage device meets a second heat exchange condition, heat exchange occurs between the second energy storage device and an electric drive.

[0020] In one possible approach, when the temperature of the energy storage medium in the first energy storage device meets the first heat exchange condition, heat exchange is performed between the first energy storage device and the battery, including: recovering heat from the battery when the temperature of the energy storage medium in the first energy storage device is within the first recovery temperature range; when the temperature of the energy storage medium in the second energy storage device meets the second heat exchange condition, heat exchange is performed between the second energy storage device and the electric drive, including: recovering heat from the electric drive when the temperature of the energy storage medium in the second energy storage device is within the second recovery temperature range; the highest temperature in the first recovery temperature range is lower than the lowest temperature in the second recovery temperature range.

[0021] In one possible embodiment, the first energy storage device is also coupled to an electric drive, and the method further includes: recovering heat from the battery and the electric drive through the first energy storage device when the temperature of the first energy storage device is within a third recovery temperature range; and recovering heat from the electric drive through the first energy storage device when the temperature of the first energy storage device is within a fourth recovery temperature range; wherein the highest temperature in the third recovery temperature range is lower than the lowest temperature in the fourth recovery temperature range.

[0022] In one possible embodiment, the thermal management system further includes a heating system, and the method further includes: when the battery is charging, the temperature of the energy storage medium of the first energy storage device is in the fifth recovery temperature range, and the temperature of the energy storage medium of the second energy storage device is in the sixth recovery temperature range, heating the first energy storage device and the second energy storage device with the heat from the heater of the heating system.

[0023] One possible approach is to further include supplying heat to the heating system via a first energy storage device and a second energy storage device when the heating system is activated.

[0024] According to a third aspect provided in this application, a vehicle is provided that includes the thermal management system of the first aspect.

[0025] Therefore, the above-mentioned technical features of this application have the following beneficial effects:

[0026] 1. The thermal management system is equipped with two energy storage devices: a first energy storage device and a second energy storage device. The first energy storage device is connected to the battery, and the second energy storage device is connected to both the battery and the electric drive. The first energy storage device exchanges heat with the battery, and the second energy storage device exchanges heat with the electric drive. By configuring corresponding energy storage devices for the battery and the electric drive respectively, the first energy storage device recovers heat from the battery and heats the battery when needed, and the second energy storage device recovers heat from the electric drive and utilizes the recovered heat, thus effectively recovering and utilizing the vehicle's heat.

[0027] 2. Corresponding phase change materials are configured for the first and second energy storage devices. In this way, during the heat absorption process, the temperature of the phase change materials in the first and second energy storage devices is lower than the temperature of the coolant, thereby absorbing as much heat as possible and providing more heat for the corresponding devices during the heat release process.

[0028] 3. The first energy storage device recovers heat from the battery when operating at a lower temperature. The second energy storage device recovers heat from the electric drive when operating at a lower temperature. By configuring different energy storage devices for the battery and the electric drive respectively, a tiered heat recovery system is achieved, thereby improving heat recovery efficiency.

[0029] 4. When the heating system is activated, the first and second energy storage devices are used to supply heat to the heating system, thus eliminating the need to consume battery power for heating and improving the vehicle's range. Attached Figure Description

[0030] Figure 1 This is one of the structural schematic diagrams of a thermal management system according to an exemplary embodiment;

[0031] Figure 2 This is a schematic diagram illustrating a process for determining an energy storage medium according to an exemplary embodiment;

[0032] Figure 3 This is a schematic diagram illustrating another process for determining an energy storage medium according to an exemplary embodiment;

[0033] Figure 4 This is a schematic diagram of a connection system structure for a control unit according to an exemplary embodiment;

[0034] Figure 5 This is a second schematic diagram of the structure of a thermal management system according to an exemplary embodiment;

[0035] Figure 6 This is a third schematic diagram illustrating the structure of a thermal management system according to an exemplary embodiment;

[0036] Figure 7 This is a fourth schematic diagram illustrating the structure of a thermal management system according to an exemplary embodiment;

[0037] Figure 8 This is the fifth schematic diagram of a thermal management system according to an exemplary embodiment;

[0038] Figure 9 This is a sixth schematic diagram illustrating the structure of a thermal management system according to an exemplary embodiment;

[0039] Figure 10This is a schematic diagram illustrating a heat recovery process excluding an engine according to an exemplary embodiment;

[0040] Figure 11 This is a schematic diagram illustrating a heat recovery process including an engine according to an exemplary embodiment;

[0041] Figure 12 This is a schematic diagram illustrating a battery heating process according to an exemplary embodiment;

[0042] Figure 13 This is a schematic diagram illustrating a heating process of a warm air system according to an exemplary embodiment;

[0043] Figure 14 This is a schematic diagram illustrating another heating process of a warm air system according to an exemplary embodiment;

[0044] Figure 15 This is a schematic diagram illustrating a charging thermal storage process according to an exemplary embodiment;

[0045] Figure 16 This is a schematic diagram illustrating a charging and cooling process according to an exemplary embodiment;

[0046] Figure 17 This is a schematic diagram illustrating a cooling process according to an exemplary embodiment;

[0047] Figure 18 This is a schematic diagram illustrating another battery heating process according to an exemplary embodiment;

[0048] Figure 19 This is a schematic flowchart illustrating a thermal management method according to an exemplary embodiment.

[0049] Explanation of reference numerals in the attached figures

[0050] 10. Thermal Management System; 101. Battery; 102. Electric Drive; 103. First Energy Storage Device; 104. Second Energy Storage Device; 105. First Three-Way Valve; 106. Second Three-Way Valve; 107. Third Three-Way Valve; 108. Fourth Three-Way Valve; 109. Four-Way Valve; 110. First Check Valve; 111. Engine; 112. First Three-Way Pipe; 113. Fifth Three-Way Valve; 114. Heating System; 115. Second Three-Way Pipe; 116. Third Three-Way Pipe; 117. Second Check Valve; 118. Fourth Three-Way Pipe; 119. Fifth Three-Way Pipe; 120. Sixth Three-Way Pipe; 121. Two-Way Valve; 122. Seventh Three-Way Pipe. Detailed Implementation

[0051] The embodiments of this application will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. This application can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be understood that the preferred embodiments are only for illustrating this application and are not intended to limit the scope of protection of this application.

[0052] As described in the background section, currently, the electrical energy of batteries is consumed as heat. Therefore, how to utilize the heat generated by electric vehicles is a pressing technical problem that needs to be solved. In particular, the significant temperature differences between the operating temperatures of the vehicle's battery, electric drive, and engine prevent the implementation of stepped heat absorption. For example, the battery's operating temperature is 40℃-50℃, the electric drive's is 70℃-80℃, and the engine's is 75℃-85℃. Consequently, only the heat from one device (such as the engine 111) can be recovered during the heat recovery process, resulting in insufficient heat utilization efficiency.

[0053] To solve the above technical problems, such as Figure 1 As shown, this application provides a thermal management system 10, which includes a battery 101, an electric drive 102, a first energy storage device 103, and a second energy storage device 104. The first energy storage device 103 is coupled to the battery 101 and configured to exchange heat with the battery 101. The second energy storage device 104 is coupled to the electric drive 102 and configured to exchange heat with the electric drive 102.

[0054] In some embodiments, the first energy storage device 103, the second energy storage device 104, the battery 101, and the electric drive 102 are connected via multiple connection valves.

[0055] In this embodiment, battery 101 can be understood as a battery 101 thermal management system, and electric drive 102 can be understood as an electric drive 102 cooling system. Thus, after the first energy storage device 103 is connected to the battery 101, the first energy storage device 103 exchanges heat with the heat exchange medium of the battery 101 thermal management system, and the second energy storage device 104 exchanges heat with the heat exchange medium of the electric drive 102 cooling system.

[0056] In some embodiments, the first energy storage device 103 is configured to: recover heat from the battery 101 and heat the battery 101.

[0057] Understandably, when the temperature of battery 101 is high and the temperature of the first energy storage device 103 is low, the heat of battery 101 is recovered through the first energy storage device 103. When the temperature of battery 101 is low and the temperature of the first energy storage device 103 is high, battery 101 is heated through the first energy storage device 103.

[0058] In some embodiments, the second energy storage device 104 is configured to recover heat from the electric drive 102 and heat the battery 101.

[0059] Understandably, the electric drive 102 generates a high amount of heat when it is in operation. Therefore, the second energy storage device 104 recovers this heat from the electric drive 102. Subsequently, the battery 101 is heated by the second energy storage device 104.

[0060] The thermal management system provided in this application embodiment offers at least the following beneficial effects: The thermal management system is configured with two energy storage devices: a first energy storage device 103 and a second energy storage device 104. The first energy storage device 103 is connected to the battery 101, and the second energy storage device 104 is connected to the electric drive 102. The first energy storage device 103 exchanges heat with the battery 101, and the second energy storage device 104 exchanges heat with the electric drive 102. Thus, by configuring the first energy storage device 103 and the second energy storage device 104 for the battery 101 and the electric drive 102 respectively, the first energy storage device 103 recovers heat from the battery 101 and heats the battery 101 when heating is required, and the second energy storage device 104 recovers heat from the electric drive 102 and utilizes the recovered heat, thereby effectively recovering heat.

[0061] In one design, the energy storage medium of the first energy storage device 103 and the energy storage medium of the second energy storage device 104 are phase change materials. The phase change temperature of the energy storage medium of the first energy storage device 103 is less than or equal to a first temperature, and the phase change temperature of the energy storage medium of the second energy storage device 104 is less than or equal to a second temperature. The first temperature is the highest temperature reached by the battery 101 in the operating state, and the second temperature is the highest temperature reached by the electric drive 102 in the operating state.

[0062] In some embodiments, the first energy storage device 103 and the second energy storage device 104 are composed of a heat exchange component, a heat exchange medium, inlet and outlet water pipes, and insulation material (shell). The heat exchange component may employ a multi-channel structure to cover multiple heat exchange plates. The heat exchange component may be made of aluminum, thereby increasing the heat exchange area while reducing weight. The heat exchange solution in the inlet and outlet water pipes exchanges heat with the heat exchange medium through the heat exchange component.

[0063] This application does not limit the phase change material. For example, the phase change material can be an organic material or an inorganic material. For example, the phase change material can be sodium sulfate decahydrate (the main material is paraffin).

[0064] In some embodiments, in order to determine the first energy storage medium of the first energy storage device 103, such as Figure 2 As shown, a schematic diagram of a process for determining an energy storage medium is illustrated, including: S201-S203.

[0065] S201, calibrating the optimal operating temperature range of battery 101.

[0066] In some embodiments, the optimal operating temperature range of the battery 101 is determined based on parameters of the battery 101. The parameters of the battery 101 include at least one of internal resistance, capacity, energy density, and charge / discharge rate.

[0067] In this embodiment, the optimal operating temperature range of the battery 101 is the temperature range in which the battery 101 performs best and is beneficial to the battery 101's lifespan. For example, the optimal operating temperature range of the battery 101 is 45°C-50°C.

[0068] S202. Determine the phase transition temperature of the first energy storage medium based on the optimal operating temperature range of the battery 101.

[0069] In some embodiments, any temperature within the optimal operating temperature range of the battery 101 is determined as the phase transition temperature of the first energy storage medium.

[0070] For example, the optimal operating temperature range of battery 101 is 45°C-50°C. The phase transition temperature of the first energy storage medium can be 45°C, 50°C, or 49°C. This application does not limit the specific temperature range.

[0071] S203. Determine the first energy storage medium.

[0072] In some embodiments, a plurality of candidate energy storage media are configured for the first energy storage device 103. Subsequently, after determining the phase change temperature of the energy storage media of the first energy storage device 103, the heat absorbed by each of the plurality of candidate energy storage media is determined, and the candidate energy storage media that absorbs the most heat is determined as the first energy storage media.

[0073] Specifically, the phase change material heat absorption efficiency of each candidate energy storage medium is verified, and the system material with the largest latent heat per unit time is selected as the first energy storage medium.

[0074] Understandably, by defining the optimal operating temperature range of the calibrated equipment, a target phase change material is selected from multiple candidate phase change materials to be used as the heat exchange medium. This ensures that the selected phase change material absorbs as much heat as possible while maintaining a temperature as low as possible below the coolant temperature of the battery 101 during the heat absorption process. (This is achieved by defining the optimal operating temperature range of the electric drive 102.)

[0075] In some embodiments, in order to determine the second energy storage medium of the second energy storage device 104, such as Figure 3 As shown, another schematic diagram of the process for determining the energy storage medium is illustrated, including: S301-S303.

[0076] S301, calibrating the optimal operating temperature range of electric drive 102.

[0077] In some embodiments, the optimal operating temperature range of the electric drive 102 is determined based on the operating parameters of the electric drive 102. The operating parameters of the battery 101 include at least one of maximum speed, peak power, peak torque, and rated power.

[0078] In this embodiment, the optimal operating temperature range of the electric drive 102 is the temperature range in which the electric drive 102 performs best. For example, the optimal operating temperature range of the electric drive 102 is 70℃-80℃.

[0079] S302. Determine the phase change temperature of the second energy storage medium based on the optimal operating temperature range of the electric drive 102.

[0080] In some embodiments, any temperature within the optimal operating temperature range of the electric drive 102 is determined as the phase change temperature of the second energy storage medium.

[0081] For example, the optimal operating temperature range of the electric drive 102 is 70°C-80°C. The phase change temperature of the second energy storage medium can be 70°C, 80°C, or 79°C; this application does not limit the specific temperature range.

[0082] S303. Determine the second energy storage medium.

[0083] In some embodiments, a plurality of candidate energy storage media are configured for the second energy storage device 104. Subsequently, after determining the phase change temperature of the energy storage media of the second energy storage device 104, the heat absorbed by each of the plurality of candidate energy storage media is determined, and the candidate energy storage media that absorbs the most heat is determined as the second energy storage media.

[0084] In one design, the first energy storage device 103 is specifically configured to recover heat from the battery 101 when the temperature of the first energy storage device 103 is within a first temperature range. The second energy storage device 104 is specifically configured to recover heat from the electric drive 102 when the temperature of the second energy storage device 104 is within a second temperature range.

[0085] In one design, the first energy storage device 103 is also coupled to the electric drive 102. Specifically, the first energy storage device 103 is configured to: recover heat from the battery 101 and the electric drive 102 when the temperature of the first energy storage device 103 is in a third temperature range; and recover heat from the electric drive 102 when the temperature of the first energy storage device 103 is in a fourth temperature range.

[0086] In one design, the electric drive 102 is coupled to the battery 101. The thermal management system is configured to heat the battery 101 using the heat from the electric drive 102 when the temperature of the battery 101 is lower than a first heating temperature, the temperature of the first energy storage device 103 is in a fourth temperature range, and the temperature of the second energy storage device 104 is in a fifth temperature range.

[0087] In one design, the thermal management system further includes an engine 111. A first energy storage device 103 and a second energy storage device 104 are also configured to recover heat from the engine 111 when it is started.

[0088] In one design, the thermal management system further includes a heating system 114. The heating system 114 is configured to heat the first energy storage device 103 and the second energy storage device 104 using the heat from the heater of the heating system 114 when the battery 101 is charging, the temperature of the first energy storage device 103 is in the sixth temperature range, and the temperature of the second energy storage device 104 is in the seventh temperature range.

[0089] In one design, the first energy storage device 103 and the second energy storage device 104 are also configured to provide heat to the heating system 114 when the heating system 114 is started.

[0090] In one design, the thermal management system 10 also includes a compressor. A first energy storage device 103 and a second energy storage device 104 are configured to absorb cooling capacity from the compressor when the battery 101 is in a charging state, the temperature of the first energy storage device 103 is in an eighth temperature range, and the temperature of the second energy storage device 104 is in a ninth temperature range.

[0091] In one design, the first energy storage device 103 is further configured to cool the battery 101 when the temperature of the first energy storage device 103 is in the tenth temperature range, the temperature of the second energy storage device 104 is in the eleventh temperature range, and the temperature of the battery 101 is greater than or equal to the third temperature range. The second energy storage device 104 is further configured to cool the battery 101 when the temperature of the first energy storage device 103 is in the twelfth temperature range and the temperature of the second energy storage device 104 is in the thirteenth temperature range.

[0092] To better understand the thermal management system 10 provided in this application embodiment, the thermal management system 10 in this application embodiment is controlled by a control unit to realize different heat exchange modes. The control unit can be a device in the thermal management system 10, or it can be a device in the thermal management system 10; this application embodiment does not limit this. For example, as shown... Figure 4 The diagram shows a schematic of a connection system structure for a control unit 20. Figure 4 The diagram shows the control unit 20 connected to the first temperature sensor T1, the second temperature sensor T2, and multiple connecting valves (in...). Figure 5 The diagram shows four connecting valves: three-way valve S1, three-way valve S2, three-way valve S3, and three-way valve S4 (in actual applications, there may be more or fewer connecting valves) and a device controller K1.

[0093] The first temperature sensor T1 is used to collect the temperature of the first energy storage device 103, and the second temperature sensor T2 is used to collect the temperature of the second energy storage device 104.

[0094] It should be noted that the control unit 20 can also be connected to more temperature sensors. For example, the control unit 20 is also connected to a temperature sensor that measures the temperature of the battery 101, thereby obtaining the temperature of the battery 101.

[0095] Figure 4 Multiple connecting valves are used to control the flow direction of the heat exchange medium in the thermal management system 10. The equipment controller K1 is used to control the operating mode of the target equipment. For example, the equipment controller K1 is an engine cooling control unit used to control the operation and shutdown of the engine cooling system where engine 111 is located.

[0096] In some embodiments, the first energy storage device 103, the second energy storage device 104, the battery 101, and the electric drive 102 of the thermal management system 10 are connected via multiple connecting valves. The connecting valves can be one or more of a three-way pipe, a three-way valve, a four-way valve 109, or a first one-way valve 110.

[0097] For example, Figure 5 A schematic diagram of a thermal management system 10 is shown. Figure 5In the process, multiple connecting valves include: a first three-way valve 105, a second three-way valve 106, a third three-way valve 107, a fourth three-way valve 108, a four-way valve 109, and a first one-way valve 110.

[0098] The first port of the first three-way valve 105 is connected to one end of the battery 101; the second port of the first three-way valve 105 is connected to the first interface of the first energy storage device 103; the third port of the first three-way valve 105 is connected to the first port of the fourth three-way valve 108; the first port of the second three-way valve 106 is connected to the first interface of the second energy storage device 104; the second port of the second three-way valve 106 is connected to one end of the electric drive 102; the third port of the second three-way valve 106 is connected to the first port of the third three-way valve 107; the third port of the third three-way valve 107... The second port is connected to the first port of the four-way valve 109, the third port of the third three-way valve 107 is connected to the other end of the battery 101, the second port of the fourth three-way valve 108 is connected to the other end of the electric drive 102, the third port of the fourth three-way valve 108 is connected to the second port of the four-way valve 109, the third port of the four-way valve 109 is connected to the second interface of the first energy storage device 103, the fourth port of the four-way valve 109 is connected to the outlet of the first one-way valve 110, and the inlet of the first one-way valve 110 is connected to the second interface of the second energy storage device 104.

[0099] In some embodiments, the thermal management system 10 may further include an engine 111. Based on Figure 5 , Figure 6 A schematic diagram of the thermal management system 10, including a fifth three-way valve 113, a first three-way pipe 112, and an engine 111, is shown. Figure 6 In this configuration, the first port of the fifth three-way valve 113 is connected to the inlet of the first one-way valve 110, the second port of the fifth three-way valve 113 is connected to the second interface of the second energy storage device 104, and the third port of the fifth three-way valve 113 is connected to the first end of the engine 111. The first port of the first three-way pipe 112 is connected to the second end of the engine 111, the second port of the first three-way pipe 112 is connected to the first port of the second three-way valve 106, and the third port of the first three-way pipe 112 is connected to the first interface of the second energy storage device 104.

[0100] In some embodiments, the thermal management system 10 may further include a heating system 114. Based on Figure 5 , Figure 7 A schematic diagram of the structure of a thermal management system 10, including a second tee pipe 115, a third tee pipe 116, and a heating system 114, is shown. Figure 7In this configuration, the first port of the second three-way pipe 115 is connected to the inlet of the first one-way valve 110, the second port of the second three-way pipe 115 is connected to the second interface of the second energy storage device 104, and the third port of the second three-way pipe 115 is connected to the first end of the heating system 114. The first port of the third three-way pipe 116 is connected to the second end of the heating system 114, the second port of the third three-way pipe 116 is connected to the first port of the second three-way valve 106, and the third port of the third three-way pipe 116 is connected to the first interface of the second energy storage device 104.

[0101] In some embodiments, the thermal management system 10 may further include a heating system 114 and an engine 111. Based on Figure 7 , Figure 8 A schematic diagram of the thermal management system 10, including a second one-way valve 117, a first three-way pipe 112, a fifth three-way valve 113, and an engine 111, is shown. Figure 8 In this configuration, the first port of the fifth three-way valve 113 is connected to the inlet of the first one-way valve 110, the second port of the fifth three-way valve 113 is connected to the first port of the second three-way pipe 115, and the third port of the fifth three-way valve 113 is connected to the first end of the engine 111. The first port of the first three-way pipe 112 is connected to the second end of the engine 111, the second port of the first three-way pipe 112 is connected to the first port of the second three-way valve 106, and the third port of the first three-way pipe 112 is connected to the inlet of the second one-way valve 117. The outlet of the second one-way valve 117 is connected to the second port of the third three-way pipe 116.

[0102] In some embodiments, the heating system 114 in the thermal management system 10 is also connected to the first energy storage device 103. Based on Figure 5 , Figure 9The diagram shows a fourth three-way pipe 118, a fifth three-way pipe 119, a sixth three-way pipe 120, a seventh three-way pipe 122, a heating system 114, a second three-way pipe 115, a third three-way pipe 116, and a two-way valve 121. The first port of the fourth three-way pipe 118 is connected to the third interface of the heating system 114, the second port of the fourth three-way pipe 118 is connected to the first interface of the first energy storage device 103, and the third port of the fourth three-way pipe 118 is connected to the second port of the first three-way valve 105. The first port of the fifth three-way pipe 119 is connected to the second interface of the first energy storage device 103, the second port of the fifth three-way pipe 119 is connected to the third port of the four-way valve 109, and the third port of the fifth three-way pipe 119 is connected to the fourth interface of the heating system 114. The first port of the sixth three-way pipe 120 is connected to the first port of the two-way valve 121, the second port of the sixth three-way pipe 120 is connected to the second port of the third three-way pipe 116, and the third port of the sixth three-way pipe 120 is connected to the first port of the second three-way valve 106. The first port of the seventh three-way pipe 122 is connected to the second port of the two-way valve 121, the second port of the seventh three-way pipe 122 is connected to the first port of the first three-way valve 105, and the third port of the seventh three-way pipe 122 is connected to the first port of the battery 101.

[0103] It needs to be explained that, Figure 9 The two-way valve 121 can be either a one-way valve or a two-way valve; this application does not limit the specific type of valve. When the two-way valve 121 is a one-way valve, the first port is the outlet and the second port is the inlet. In this application embodiment, the three-way valve and four-way valve 109 in the thermal management system 10 can be solenoid valves.

[0104] To better understand the heat exchange method of the thermal management system 10 provided in the embodiments of this application, such as Figure 10 As shown, a schematic diagram of a heat recovery process excluding engine 111 is illustrated, including: S1001-S1013.

[0105] S1001, Obtain the first medium temperature of the first energy storage device 103 and the second medium temperature of the second energy storage device 104.

[0106] Understandably, the first medium temperature is the temperature of the energy storage medium in the first energy storage device 103, and the second medium temperature is the temperature of the energy storage medium in the second energy storage device 104.

[0107] S1002, The temperature of the first medium is detected to be in the first temperature range and the temperature of the second medium is detected to be in the second temperature range.

[0108] In some embodiments, if the temperature of the first medium is detected to be within a first temperature range and the temperature of the second medium is detected to be within a second temperature range, S1003 is executed.

[0109] S1003, operates in battery first energy storage mode and electric drive first energy storage mode.

[0110] In this embodiment of the application, under the first energy storage mode of battery 101, combined with Figure 6 The water circulation loop is as follows: the heat exchange medium sequentially passes through battery 101, first three-way valve 105, first energy storage device 103, four-way valve 109, and third three-way valve 107 before returning to battery 101, forming a complete circulation loop. In this way, the heat exchange medium flows from battery 101 to the first energy storage device 103 and then back to battery 101, thereby heating the energy storage medium of the first energy storage device 103 with the heat from battery 101, thus enabling the first energy storage device 103 to recover heat from battery 101.

[0111] In the first energy storage mode of electric drive 102, combined with Figure 5 The water circulation loop is as follows: the heat exchanger sequentially passes through the electric drive 102, the second three-way valve 106, the second energy storage device 104, the first one-way valve 110, the four-way valve 109, and the fourth three-way valve 108 before returning to the electric drive 102, forming a complete circulation loop. Thus, after flowing from the electric drive 102 to the second energy storage device 104, the heat exchanger returns to the electric drive 102, thereby heating the energy storage medium in the second energy storage device 104 with the heat from the electric drive 102, enabling the second energy storage device 104 to recover the heat from the electric drive 102.

[0112] It is understandable that when the temperatures of the first medium and the second medium are low, heat is stored using the first energy storage device 103 and the second energy storage device 104, respectively.

[0113] S1004. Determine whether the temperature of the first medium after heating is within the third temperature range and whether the temperature of the second medium after heating is within the fourth temperature range.

[0114] If yes, then execute S1003. If no, execute S1001.

[0115] Understandably, the third temperature range is the heating temperature range of the first energy storage device 103, and the fourth temperature range is the heating temperature range of the second energy storage device 104. Thus, while the first energy storage device 103 is still within its heating temperature range, heating continues for the first energy storage device 103, and while the second energy storage device 104 is still within its heating temperature range, heating continues for the second energy storage device 104.

[0116] In some embodiments, when the temperature of the first dielectric is detected to be within a first temperature range, the battery 101 operates in a first energy storage mode. When the temperature of the second dielectric is detected to be within a second temperature range, the electric drive 102 operates in a first energy storage mode.

[0117] It should be noted that the first, second, third, and fourth temperature ranges are pre-configured temperature ranges, and different temperature ranges can be set according to different energy storage media. This application does not specifically limit the specific temperature ranges in this regard. For example, the highest temperature in the first and third temperature ranges is lower than the second heating temperature, and the highest temperature in the second and fourth temperature ranges is lower than the second electric drive heating temperature. For instance, the second battery heating temperature is 20°C, and the second electric drive heating temperature is 30°C.

[0118] S1005, The temperature of the first medium is detected to be in the fifth temperature range and the temperature of the second medium is detected to be in the sixth temperature range.

[0119] In some embodiments, if the temperature of the first medium is detected to be in the fifth temperature range and the temperature of the second medium is detected to be in the sixth temperature range, S1006 is executed.

[0120] S1006, operating in single electric drive energy storage mode.

[0121] In this embodiment of the application, under the single electric drive 102 energy storage mode, combined with Figure 5 The water flow is as follows: the heat exchange medium sequentially passes through battery 101, first three-way valve 105, fourth three-way valve 108, electric drive 102, second three-way valve 106, second energy storage device 104, first one-way valve 110, four-way valve 109, and third three-way valve 107 before returning to battery 101, forming a circulation loop. In this way, the heat exchange medium flows from battery 101 to electric drive 102, then to second energy storage device 104, and then back to battery 101. This heat from battery 101 and electric drive 102 heats the energy storage medium in second energy storage device 104, enabling second energy storage device 104 to recover heat from battery 101 and electric drive 102.

[0122] S1007. Determine whether the temperature of the first medium after heating is within the seventh temperature range and whether the temperature of the second medium after heating is within the eighth temperature range.

[0123] If yes, then execute S1006. If no, execute S1001.

[0124] It should be noted that the fifth, sixth, seventh, and eighth temperature ranges are pre-configured temperature ranges, and different temperature ranges can be set according to different energy storage media. This application does not specifically limit the specific temperature ranges in this regard. Furthermore, the lowest temperature in the fifth temperature range is higher than the highest temperature in the first temperature range, and the lowest temperature in the sixth temperature range is higher than the highest temperature in the second temperature range. For example, the lowest temperatures in the fifth and seventh temperature ranges are both higher than the third heating temperature, and the highest temperatures in the sixth and eighth temperature ranges are both lower than the third electric drive heating temperature. For example, the third battery heating temperature is 40°C, and the third electric drive heating temperature is 30°C.

[0125] It is understandable that when the temperature of the energy storage medium in the first energy storage device 103 is high and the second energy storage device 104 needs to store heat, the heat of the battery 101 and the electric drive 102 can be recovered by the second energy storage device 104.

[0126] S1008, The temperature of the first medium is detected to be in the ninth temperature range and the temperature of the second medium is detected to be in the tenth temperature range.

[0127] In some embodiments, if the temperature of the first medium is detected to be in the ninth temperature range and the temperature of the second medium is detected to be in the tenth temperature range, S1009 is executed.

[0128] S1009, operating in single-battery energy storage mode.

[0129] In this embodiment of the application, under the single electric drive 102 energy storage mode, combined with Figure 6 The water flow is as follows: the heat exchange medium sequentially passes through electric drive 102, second three-way valve 106, third three-way valve 107, battery 101, first three-way valve 105, first energy storage device 103, four-way valve 109, and fourth three-way valve 108 before flowing back to electric drive 102, forming a circulation loop. In this way, the heat exchange medium flows from electric drive 102 to battery 101, then to first energy storage device 103, and then back to electric drive 102, thereby heating the energy storage medium of first energy storage device 103 with the heat from battery 101 and electric drive 102, enabling first energy storage device 103 to recover heat from electric drive 102.

[0130] S1010. Determine whether the temperature of the first medium after heating is within the eleventh temperature range and whether the temperature of the second medium after heating is within the twelfth temperature range.

[0131] If yes, then execute S1009. If no, execute S1001.

[0132] It should be noted that the ninth, tenth, eleventh, and twelfth temperature ranges are pre-configured temperature ranges, and different temperature ranges can be set according to different energy storage media. This application does not specifically limit the specific temperature ranges in this regard. Furthermore, the lowest temperature in the first temperature range is higher than the highest temperature in the ninth temperature range, and the lowest temperature in the second temperature range is higher than the highest temperature in the tenth temperature range. For example, the lowest temperatures in the ninth and eleventh temperature ranges are both lower than the fourth heating temperature, and the highest temperatures in the tenth and twelfth temperature ranges are both higher than the fourth electric drive heating temperature. For example, the fourth battery heating temperature is 30°C, and the fourth electric drive heating temperature is 56°C.

[0133] S1011, The temperature of the first medium is detected to be in the thirteenth temperature range and the temperature of the second medium is detected to be in the fourteenth temperature range.

[0134] In some embodiments, if the temperature of the first medium is detected to be in the thirteenth temperature range and the temperature of the second medium is detected to be in the fourteenth temperature range, it is determined whether the temperature of the battery 101 is within the heating temperature range. If yes, S1012 is executed. If no, the temperature of the battery 101 is continued to be detected.

[0135] S1012, Run the first battery heating mode.

[0136] In this embodiment of the application, under the single electric drive 102 energy storage mode, combined with Figure 6 The water flow is as follows: the heat exchanger sequentially passes through electric drive 102, second three-way valve 106, third three-way valve 107, battery 101, first three-way valve 105, and fourth three-way valve 108 before returning to electric drive 102, forming a circulation loop. Thus, when the temperatures of the first energy storage device 103 and the second energy storage device 104 are high, the heat exchanger flows from electric drive 102 to battery 101 and then back to electric drive 102, thereby heating battery 101 with the heat from electric drive 102.

[0137] S1013. Determine whether the temperature of the first medium after heating is within the fifteenth temperature range and whether the temperature of the second medium after heating is within the sixteenth temperature range.

[0138] If yes, then execute S1012. If no, execute S1001.

[0139] It should be noted that the thirteenth, fourteenth, fifteenth, and sixteenth temperature ranges are pre-configured temperature ranges, and different temperature ranges can be set according to different energy storage media. This application does not specifically limit the implementation of these ranges. Furthermore, the lowest temperature in the thirteenth temperature range is higher than the highest temperature in the fifth temperature range, and the lowest temperature in the fourteenth temperature range is higher than the highest temperature in the sixth temperature range. For example, the lowest temperatures in the thirteenth and fifteenth temperature ranges are both higher than the fifth heating temperature, and the highest temperatures in the fourteenth and sixteenth temperature ranges are both higher than the fifth electric drive heating temperature. For example, the fifth battery heating temperature is 40°C, and the fifth electric drive heating temperature is 65°C.

[0140] It is understandable that, when the first energy storage device 103 and the second energy storage device 104 do not require heat storage, the heat from the electric drive 102 is used to heat the battery 101.

[0141] like Figure 11 As shown, a schematic diagram of a heat recovery process including engine 111 is illustrated, including: S1101-S1110.

[0142] S1101, Obtain the first medium temperature of the first energy storage device 103 and the second medium temperature of the second energy storage device 104.

[0143] S1102, The temperature of the first medium is detected to be in the seventeenth temperature range and the temperature of the second medium is detected to be in the eighteenth temperature range.

[0144] In some embodiments, if the temperature of the first medium is detected to be in the seventeenth temperature range and the temperature of the second medium is detected to be in the eighteenth temperature range, S1103 is executed.

[0145] S1103, Activate the second energy storage mode of the battery.

[0146] In this embodiment of the application, under the second energy storage mode of the battery, combined with Figure 6 The water flow is as follows: the heat exchanger sequentially passes through engine 111, fifth three-way valve 113, first one-way valve 110, four-way valve 109, first energy storage device 103, first three-way valve 105, fourth three-way valve 108, electric drive 102, second three-way valve 106, and first three-way pipe 112 before flowing back to engine 111, forming a circulation loop. In this way, the heat exchanger flows from engine 111 to the first energy storage device 103 and then back to engine 111, thereby heating the energy storage medium in the first energy storage device 103 with the heat from engine 111, enabling the first energy storage device 103 to recover heat from engine 111.

[0147] S1104. Determine whether the temperature of the first medium after heating is within the nineteenth temperature range and whether the temperature of the second medium after heating is within the twentieth temperature range.

[0148] If yes, then execute S1103. If no, execute S1101.

[0149] S1105, The temperature of the first medium is detected to be in the twenty-first temperature range and the temperature of the second medium is detected to be in the twenty-second temperature range.

[0150] In some embodiments, if the temperature of the first medium is detected to be in the seventeenth temperature range and the temperature of the second medium is detected to be in the eighteenth temperature range, S1106 is executed.

[0151] S1106, Operating the second energy storage mode of electric drive.

[0152] In this embodiment of the application, under the electric drive second energy storage mode, combined with Figure 6 The water flow is as follows: the heat exchanger passes sequentially through engine 111, first three-way pipe 112, second energy storage device 104, and fifth three-way valve 113 before returning to engine 111, forming a circulation loop. Thus, the heat exchanger flows from engine 111 to the second energy storage device 104 and then back to engine 111, thereby heating the energy storage medium in the second energy storage device 104 with the heat from engine 111, enabling the second energy storage device 104 to recover heat from engine 111.

[0153] S1107. Determine whether the temperature of the first medium after heating is within the twenty-third temperature range and whether the temperature of the second medium after heating is within the twenty-fourth temperature range.

[0154] If yes, then execute S1106. If no, execute S1101.

[0155] It should be noted that the seventeenth, eighteenth, nineteenth, twentieth, twenty-first, twenty-second, twenty-third, and twenty-fourth temperature ranges are pre-configured temperature ranges. Different temperature ranges can be set according to different energy storage media. This application does not make specific limitations on this embodiment.

[0156] For example, the lowest temperatures in the seventeenth and nineteenth temperature ranges are both lower than the sixth heating temperature, and the highest temperatures in the eighteenth and nineteenth temperature ranges are both higher than the sixth electric drive heating temperature. For instance, the sixth battery heating temperature is 25°C, and the sixth electric drive heating temperature is 61°C. Similarly, the lowest temperatures in the twentieth and twenty-first temperature ranges are both higher than the seventh heating temperature, and the highest temperatures in the twenty-second and twenty-fourth temperature ranges are both lower than the seventh electric drive heating temperature. For instance, the seventh battery heating temperature is 39°C, and the seventh electric drive heating temperature is 51°C.

[0157] S1108, The temperature of the first medium is detected to be in the twenty-fifth temperature range and the temperature of the second medium is detected to be in the twenty-sixth temperature range.

[0158] In some embodiments, if the temperature of the first medium is detected to be in the twenty-fifth temperature range and the temperature of the second medium is detected to be in the twenty-sixth temperature range, S1109 is executed.

[0159] S1109, Activate the first battery heating mode.

[0160] S1110. Determine whether the temperature of the first medium after heating is within the twenty-seventh temperature range and whether the temperature of the second medium after heating is within the twenty-eighth temperature range.

[0161] If yes, then execute S1109. If no, execute S1101.

[0162] It should be noted that the 25th, 26th, 27th, and 28th temperature ranges are pre-configured temperature ranges, and different temperature ranges can be set according to different energy storage media. This application does not specifically limit the specific temperature ranges in this regard. For example, the lowest temperature in the 25th and 27th temperature ranges is higher than the 8th heating temperature, and the highest temperature in the 26th and 28th temperature ranges is higher than the 8th electric drive heating temperature. For example, the 8th battery heating temperature is 41°C, and the 8th electric drive heating temperature is 66°C.

[0163] Understandably, S1001-S1013 and S1101-S1110 above describe the energy storage process performed by the energy storage device. After energy storage is performed by the energy storage device, as... Figure 12 As shown, a schematic diagram of a heating process for battery 101 is illustrated, including: S1201-S1210.

[0164] S1201, Obtain the first medium temperature of the first energy storage device 103 and the second medium temperature of the second energy storage device 104.

[0165] S1202, The temperature of the first medium is detected to be in the twenty-ninth temperature range and the temperature of the second medium is detected to be in the thirtieth temperature range.

[0166] In some embodiments, if the temperature of the first medium is detected to be in the twenty-ninth temperature range and the temperature of the second medium is detected to be in the thirtieth temperature range, S1203 is executed.

[0167] S1203, Run the second battery heating mode.

[0168] In this embodiment of the application, under the second battery heating mode, combined with Figure 6 The water flow is as follows: the heat exchanger sequentially passes through battery 101, first three-way valve 105, first energy storage device 103, four-way valve 109, and third three-way valve 107 before returning to battery 101, forming a circulation loop. Thus, the heat exchanger flows from battery 101 to the first energy storage device 103 and then back to battery 101, thereby heating battery 101 with the heat from the first energy storage device 103, achieving the goal of the first energy storage device 103 heating battery 101.

[0169] S1204. Determine whether the temperature of the first medium after heating is within the thirty-first temperature range and whether the temperature of the second medium after heating is within the thirty-second temperature range.

[0170] If yes, then execute S1203. If no, execute S1201.

[0171] It should be noted that the 29th, 30th, 31st, and 32nd temperature ranges are pre-configured temperature ranges, and different temperature ranges can be set according to different energy storage media. This application does not specifically limit the specific temperature ranges in this regard. For example, the lowest temperature in the 29th and 31st temperature ranges is higher than the first battery's heat dissipation temperature, and the highest temperature in the 30th and 32nd temperature ranges is lower than the first electric drive's heat dissipation temperature. For example, the first battery's heat dissipation temperature is 35°C, and the first electric drive's heat dissipation temperature is 61°C.

[0172] S1205, The temperature of the first medium is detected to be in the thirty-third temperature range and the temperature of the second medium is detected to be in the thirty-fourth temperature range.

[0173] S1206, Run the third battery heating mode.

[0174] In this embodiment of the application, under the third battery heating mode, combined with Figure 5The water flow is as follows: the heat exchanger sequentially passes through battery 101, first three-way valve 105, fourth three-way valve 108, electric drive 102, second three-way valve 106, second energy storage device 104, first one-way valve 110, four-way valve 109, and third three-way valve 107 before returning to battery 101, forming a circulation loop. Thus, the heat exchanger flows from battery 101 to the second energy storage device 104 and then back to battery 101, thereby heating battery 101 with the heat from the second energy storage device 104, achieving the goal of the second energy storage device 104 heating battery 101.

[0175] S1207. Determine whether the temperature of the first medium after heating is within the thirty-fifth temperature range and whether the temperature of the second medium after heating is within the thirty-sixth temperature range.

[0176] If yes, then execute S1206. If no, execute S1201.

[0177] It should be noted that temperature ranges 33, 34, 35, and 36 are pre-configured temperature ranges, and different temperature ranges can be set according to different energy storage media. This application does not specifically limit the specific temperature ranges in these ranges. For example, the lowest temperatures in temperature ranges 29 and 31 are both lower than the heat dissipation temperature of the second battery, and the highest temperatures in temperature ranges 30 and 32 are both lower than the heat dissipation temperature of the second electric drive. For example, the heat dissipation temperature of the second battery is 25°C, and the heat dissipation temperature of the second electric drive is 62°C.

[0178] S1208, The temperature of the first medium is detected to be in the thirty-seventh temperature range and the temperature of the second medium is detected to be in the thirty-eighth temperature range.

[0179] S1209, Run the first battery heating mode.

[0180] S1210. Determine whether the temperature of the first medium after heating is within the thirty-ninth temperature range and whether the temperature of the second medium after heating is within the fortieth temperature range.

[0181] If yes, then execute S1209. If no, execute S1201.

[0182] It should be noted that the 37th, 38th, 39th, and 40th temperature ranges are pre-configured temperature ranges, and different temperature ranges can be set according to different energy storage media. This application does not specifically limit the specific temperature ranges in this regard. For example, the lowest temperature in the 37th and 39th temperature ranges is higher than the heat dissipation temperature of the third battery, and the highest temperature in the 38th and 40th temperature ranges is higher than the heat dissipation temperature of the third electric drive. For example, the heat dissipation temperature of the third battery is 41°C, and the heat dissipation temperature of the third electric drive is 66°C.

[0183] Understandably, different heating modes are applied to the battery 101 based on the temperatures of the first energy storage device 103 and the second energy storage device 104. When the first energy storage device 103 is sufficient to heat the battery 101, the battery 101 is heated using the first energy storage device 103. When the first energy storage device 103 is insufficient to heat the battery 101 but the second energy storage device 104 is sufficient, the battery 101 is heated using the second energy storage device 104. When neither the first energy storage device 103 nor the second energy storage device 104 is sufficient to heat the battery 101, the battery 101 is heated using the electric drive 102.

[0184] To improve vehicle range, such as Figure 13 As shown, a schematic diagram of the heating process of a warm air system 114 is shown, including: S1301-S1304.

[0185] S1301, Obtain the first medium temperature of the first energy storage device 103 and the second medium temperature of the second energy storage device 104.

[0186] In some embodiments, when the heating system 114 is activated, the first medium temperature of the first energy storage device 103 and the second medium temperature of the second energy storage device 104 are obtained.

[0187] S1302, The temperature of the first medium is detected to be within the first preset temperature range and the temperature of the second medium is detected to be within the second preset temperature range.

[0188] S1303, Run the first warm air heating mode.

[0189] In this embodiment of the application, in the first warm air heating mode, combined with Figure 8 The water flow is as follows: the heat exchange medium flows sequentially through the engine 111, the first three-way pipe 112, the second one-way valve 117, the third three-way pipe 116, the heating system 114, the second three-way pipe 115, and the fifth three-way valve 113 before returning to the engine 111, forming a circulation loop. In this way, the heat exchange medium utilizes the engine 111 to provide heat to the heating system 114, eliminating the need for the battery 101 to heat the heating system 114 and thus improving the vehicle's range.

[0190] S1304. Determine whether the temperature of the first medium after heating is within the third preset temperature range and whether the temperature of the second medium after heating is within the fourth preset temperature range.

[0191] If yes, then execute S1303. If no, execute S1301.

[0192] It should be noted that the first, second, third, and fourth preset temperature ranges are pre-configured temperature ranges, and different temperature ranges can be set according to different energy storage media. This application does not specifically limit the specific temperature ranges in this embodiment. For example, when the first, second, third, and fourth preset temperature ranges are all at relatively high temperatures, the engine 111 heats the heating system 114. Alternatively, when the first, second, third, and fourth preset temperature ranges are all at relatively low temperatures, the engine 111 heats the heating system 114.

[0193] To improve vehicle range, such as Figure 14 As shown, another heating process diagram of the heating system 114 is shown, including: S1401-S1404.

[0194] S1401, Obtain the first medium temperature of the first energy storage device 103 and the second medium temperature of the second energy storage device 104.

[0195] In some embodiments, when the heating system 114 is started and the engine 111 is running, the first medium temperature of the first energy storage device 103 and the second medium temperature of the second energy storage device 104 are obtained.

[0196] S1402, The temperature of the first medium is detected to be in the fifth preset temperature range and the temperature of the second medium is detected to be in the sixth preset temperature range.

[0197] In some embodiments, if the temperature of the first medium is detected to be in a fifth preset temperature range, the temperature of the second medium is detected to be in a sixth preset temperature range, and the water temperature of the engine 111 is detected to be in a seventh preset temperature range, then S1403 is executed. Otherwise, S1401 is executed.

[0198] S1403, Run the second warm air heating mode.

[0199] In this embodiment of the application, under the second warm air heating mode, combined with Figure 7 The water flow is as follows: the heat exchange medium flows sequentially through the heating system 114, the second three-way pipe 115, the second energy storage device 104, and the third three-way pipe 116 before returning to the heating system 114, forming a circulation loop. In this way, the heat exchange medium flows from the second energy storage device 104 to the heating system 114, thereby utilizing the heat from the second energy storage device 104 to provide heat to the heating system 114, eliminating the need for the battery 101 to heat the heating system 114 and thus improving the vehicle's range.

[0200] S1404. Determine whether the temperature of the first medium after heating is within the eighth preset temperature range and whether the temperature of the second medium after heating is within the ninth preset temperature range.

[0201] If yes, then execute S1403. If no, execute S1401.

[0202] In other embodiments, it is determined whether the temperature of the first medium after heating is within an eighth preset temperature range, whether the temperature of the second medium after heating is within a ninth preset temperature range, and whether the water temperature of the engine 111 is within a tenth preset temperature range. If yes, then S1403 is executed. If no, then S1401 is executed.

[0203] It should be noted that the fifth, sixth, seventh, eighth, ninth, and tenth preset temperature ranges are pre-configured temperature ranges, and different temperature ranges can be set according to different energy storage media. This application does not specifically limit the specific temperature ranges in this regard. The lowest temperature in the tenth preset temperature range is higher than the highest temperature in the seventh preset temperature range. For example, the lowest temperatures in the fifth and seventh preset temperature ranges are both lower than the fourth battery's heat dissipation temperature, and the highest temperatures in the sixth and eighth preset temperature ranges are both higher than the fourth electric drive's heat dissipation temperature. For example, the fourth battery's heat dissipation temperature is 21°C, and the fourth electric drive's heat dissipation temperature is 63°C.

[0204] To improve the vehicle's heat storage capacity and increase its driving range. For example... Figure 15 The diagram illustrates a charging and thermal storage process, including:

[0205] S1501-S1507.

[0206] S1501, Obtain the first medium temperature of the first energy storage device 103 and the second medium temperature of the second energy storage device 104.

[0207] In some embodiments, when the battery 101 is in a charging state, the current ambient temperature is less than or equal to the charging temperature, and the remaining charging time is greater than or equal to a preset time, the first medium temperature of the first energy storage device 103 and the second medium temperature of the second energy storage device 104 are obtained.

[0208] It should be noted that the charging temperature and preset duration are pre-configured by the maintenance personnel. For example, the charging temperature can be 20℃ or 15℃, and this embodiment of the application does not limit this. The preset duration can be 30 minutes or 35 minutes, and this embodiment of the application does not limit this.

[0209] S1502, The temperature of the first medium is detected to be in the eleventh preset temperature range and the temperature of the second medium is detected to be in the twelfth preset temperature range.

[0210] In some embodiments, if the temperature of the first medium is detected to be in the eleventh preset temperature range and the temperature of the second medium is detected to be in the twelfth preset temperature range, S1503 is executed.

[0211] S1503, Run the first charging and heating mode.

[0212] In this embodiment of the application, in the first charging and heating mode, combined with Figure 7 The water flow is as follows: the heat exchange medium flows sequentially through battery 101, first three-way valve 105, first energy storage device 103, four-way valve 109, and third three-way valve 107 before returning to battery 101, forming a circulation loop. In this way, the heat exchange medium flows from battery 101 to the first energy storage device 103, thereby utilizing the heat from battery 101 to provide heat to the first energy storage device 103, effectively utilizing the heat generated by battery 101 during charging.

[0213] S1504. Determine whether the temperature of the first medium after heating is within the thirteenth preset temperature range and whether the temperature of the second medium after heating is within the fourteenth preset temperature range.

[0214] If yes, then execute S1503. If no, then execute S1501.

[0215] S1505, The temperature of the first medium is detected to be in the fifteenth preset temperature range and the temperature of the second medium is detected to be in the sixteenth preset temperature range.

[0216] In some embodiments, if the temperature of the first medium is detected to be in the fifteenth preset temperature range and the temperature of the second medium is detected to be in the sixteenth preset temperature range, S1506 is executed.

[0217] S1506, Run the second charging and heating mode and the third charging and heating mode.

[0218] In this embodiment of the application, under the second charging and heating mode, combined with Figure 7 In the first charging heating mode, the water flow is as follows: the heat exchanger flows sequentially through the heating system 114, the second three-way pipe 115, the second energy storage device 104, and the third three-way pipe 116 before returning to the heating system 114. In this way, the PTC heater of the heating system 114 provides heat to the second energy storage device 104. In the third charging heating mode, the water flow is: heating system 114, fourth three-way pipe 118, first energy storage device 103, fifth three-way pipe 119, and back to the heating system 114. Here, the PTC heater of the heating system 114 provides heat to the first energy storage device 103.

[0219] In some embodiments, when the second charging heating mode is running, the first three-way valve 105, the second three-way valve 106, and the four-way valve 109 are closed.

[0220] S1507. Determine whether the temperature of the first medium after heating is within the seventeenth preset temperature range and whether the temperature of the second medium after heating is within the eighteenth preset temperature range.

[0221] If yes, then execute S1506. If no, execute S1501. Understandably, executing S1501 stops the second charging and heating mode.

[0222] It should be noted that the eleventh, twelfth, thirteenth, fourteenth, fifteenth, sixteenth, seventeenth, and eighteenth preset temperature ranges are pre-configured temperature ranges. Different temperature ranges can be set according to different energy storage media. This application does not make specific limitations on this embodiment.

[0223] For example, the lowest temperature in the eleventh and thirteenth preset temperature ranges is higher than the heat dissipation temperature of the fifth battery, and the highest temperature in the twelfth and fourteenth preset temperature ranges is lower than the heat dissipation temperature of the fifth electric drive. For instance, the heat dissipation temperature of the fifth battery is 37°C, and the heat dissipation temperature of the fifth electric drive is 36°C. The lowest temperature in the fifteenth and seventeenth preset temperature ranges is lower than the heat dissipation temperature of the sixth battery, and the highest temperature in the sixteenth and eighteenth preset temperature ranges is lower than the heat dissipation temperature of the sixth electric drive. For instance, the heat dissipation temperature of the sixth battery is 29°C, and the heat dissipation temperature of the sixth electric drive is 39°C.

[0224] To improve the vehicle's heat storage capacity and increase its driving range. For example... Figure 16 The diagram illustrates a charging and cooling process, including:

[0225] S1601-S1604.

[0226] S1601, Obtain the first medium temperature of the first energy storage device 103 and the second medium temperature of the second energy storage device 104.

[0227] In some embodiments, when the battery 101 is in a charging state and the compressor speed is greater than or equal to a preset speed, the first medium temperature of the first energy storage device 103 and the second medium temperature of the second energy storage device 104 are obtained.

[0228] It should be noted that the preset rotation speed is pre-configured, and this embodiment of the application does not limit this.

[0229] S1602, The temperature of the first medium is detected to be in the nineteenth preset temperature range and the temperature of the second medium is detected to be in the twentieth preset temperature range.

[0230] In some embodiments, if the temperature of the first medium is detected to be in the nineteenth preset temperature range and the temperature of the second medium is detected to be in the twentieth preset temperature range, S1603 is executed.

[0231] Understandably, cooling is applied to the first energy storage device 103 and the second energy storage device 104 when the temperatures of the first and second media are relatively high. For example, the lowest temperature in the nineteenth preset temperature range is higher than the cooling temperature of the first battery, and the lowest temperature in the twentieth preset temperature range is higher than the cooling temperature of the first electric drive. For example, the cooling temperature of the first battery is 29°C, and the cooling temperature of the second battery is 37°C.

[0232] For example, the temperature of the first medium is located in the nineteenth preset temperature range and the temperature of the second medium is located in the twentieth preset temperature range.

[0233] S1603, Run the first charging cooling mode and the second charging cooling mode.

[0234] In this embodiment of the application, under the first charging cooling mode, combined with Figure 9 The water flow is as follows: the heat exchanger flows sequentially through battery 101, seventh three-way pipe 122, first three-way valve 105, fourth three-way pipe 118, first energy storage device 103, fifth three-way pipe 119, four-way valve 109, and third three-way valve 107 before returning to battery 101, forming a circulation loop. In this way, the coolant used to cool battery 101 is used to cool the first energy storage device 103, thereby storing cold in the first energy storage device 103.

[0235] In the second charging cooling mode, combined with Figure 9 The water flow direction is as follows: the heat exchanger flows sequentially through battery 101, seventh three-way pipe 122, two-way valve 121, sixth three-way pipe 120, third three-way pipe 116, second energy storage device 104, second three-way pipe 115, first one-way valve 110, four-way valve 109, and third three-way valve 107 before returning to battery 101, forming a circulation loop.

[0236] S1604. Whether the temperature of the first medium after cooling is within the twenty-first preset temperature range and whether the temperature of the second medium after cooling is within the twenty-second preset temperature range.

[0237] If yes, then execute S1603. If no, then execute S1601.

[0238] In some embodiments, after utilizing the first energy storage device 103 and the second energy storage device 104 for cold storage, such as Figure 17As shown, a schematic diagram of a cooling process is presented, including: S1701-S1710.

[0239] S1701, Obtain the first medium temperature of the first energy storage device 103 and the second medium temperature of the second energy storage device 104.

[0240] In some embodiments, when the temperature of the battery 101 is greater than or equal to the cooling temperature, the first medium temperature of the first energy storage device 103 and the second medium temperature of the second energy storage device 104 are obtained.

[0241] It should be noted that the preset rotation speed is pre-configured, and this embodiment of the application does not limit this.

[0242] For example, the lowest temperature in the nineteenth preset temperature range is higher than the cooling temperature of the first battery, and the lowest temperature in the twentieth preset temperature range is higher than the cooling temperature of the first electric drive. For instance, the cooling temperature of the first battery is 29°C, and the cooling temperature of the first battery is 37°C.

[0243] S1702, The temperature of the first medium is detected to be in the twenty-third preset temperature range and the temperature of the second medium is detected to be in the twenty-fourth preset temperature range.

[0244] In some embodiments, if the temperature of the first medium is detected to be in the twenty-third preset temperature range and the temperature of the second medium is detected to be in the twenty-fourth preset temperature range, S1703 is executed.

[0245] S1703, Run the first equipment cooling mode.

[0246] In this embodiment of the application, under the first device cooling mode, combined with Figure 9 The water flow is as follows: the heat exchanger flows sequentially through battery 101, seventh three-way pipe 122, first three-way valve 105, fourth three-way pipe 118, first energy storage device 103, fifth three-way pipe 119, four-way valve 109, and third three-way valve 107 before returning to battery 101, forming a circulation loop. Thus, when the first energy storage device 103 meets the cooling requirements, the cold storage in the first energy storage device 103 is used to cool battery 101, thereby reducing the cooling consumption of battery 101.

[0247] S1704. Whether the temperature of the first medium after cooling is within the twenty-fifth preset temperature range and whether the temperature of the second medium after cooling is within the twenty-sixth preset temperature range.

[0248] If yes, then execute S1703. If no, then execute S1701.

[0249] It should be noted that the cooling temperature, the 23rd preset temperature range, the 24th preset temperature range, the 25th preset temperature range, and the 26th preset temperature range are pre-configured temperature ranges. Different temperature ranges can be set according to different energy storage media, and this application embodiment does not specifically limit this. The highest temperature in the 23rd preset temperature range is lower than the cooling temperature. For example, the lowest temperature in the 23rd and 24th preset temperature ranges is lower than the second battery cooling temperature, and both the 24th and 25th preset temperature ranges are the second electric drive cooling temperatures. For example, the second battery cooling temperature is 25°C, and the second battery cooling temperature is 37°C.

[0250] S1705, The temperature of the first medium is detected to be in the twenty-seventh preset temperature range and the temperature of the second medium is detected to be in the twenty-eighth preset temperature range.

[0251] In some embodiments, if the temperature of the first medium is detected to be in the twenty-seventh preset temperature range and the temperature of the second medium is detected to be in the twenty-eighth preset temperature range, S1706 is executed.

[0252] S1706, Run the second equipment cooling mode.

[0253] In this embodiment of the application, under the second device cooling mode, combined with Figure 9 The water flow has two paths: Cooling water path 1: The heat exchanger flows sequentially through battery 101, seventh three-way pipe 122, first three-way valve 105, fourth three-way pipe 118, first energy storage device 103, fifth three-way pipe 119, four-way valve 109, and third three-way valve 107 before returning to battery 101, forming a circulation loop. Cooling water path 2: The heat exchanger flows sequentially through battery 101, seventh three-way pipe 122, first three-way valve 105, double-way valve 121, sixth three-way pipe 120, third three-way pipe 116, second energy storage device 104, second three-way pipe 115, first one-way valve 110, four-way valve 109, and third three-way valve 107 before returning to battery 101, forming a circulation loop. In this way, when the first energy storage device 103 and the second energy storage device 104 meet the cooling conditions, the cooling of the battery 101 is reduced by utilizing the cooling of the first energy storage device 103 and the second energy storage device 104.

[0254] S1707. Whether the temperature of the first medium after cooling is within the twenty-ninth preset temperature range and whether the temperature of the second medium after cooling is within the thirtieth preset temperature range.

[0255] If yes, then execute S1706. If no, then execute S1701.

[0256] It should be noted that the 27th, 28th, 29th, and 30th preset temperature ranges are pre-configured temperature ranges, and different temperature ranges can be set according to different energy storage media. This application does not specifically limit the specific temperature ranges in this embodiment. The highest temperature in the 27th and 28th preset temperature ranges is lower than the cooling temperature. For example, the lowest temperature in the 27th and 29th preset temperature ranges is lower than the cooling temperature of the third battery, and the lowest temperature in the 28th and 30th preset temperature ranges is lower than the cooling temperature of the third electric drive. For example, the cooling temperature of the third battery is 25°C, and the cooling temperature of the third battery is 35°C.

[0257] S1708, The temperature of the first medium is detected to be in the thirty-first preset temperature range and the temperature of the second medium is detected to be in the thirty-second preset temperature range.

[0258] In some embodiments, if the temperature of the first medium is detected to be in the thirty-first preset temperature range and the temperature of the second medium is detected to be in the thirty-second preset temperature range, S1709 is executed.

[0259] S1709, Run the third equipment cooling mode.

[0260] In this embodiment of the application, under the second device cooling mode, combined with Figure 9 The water flow is as follows: the heat exchanger flows sequentially through battery 101, seventh three-way pipe 122, two-way valve 121, sixth three-way pipe 120, third three-way pipe 116, second energy storage device 104, second three-way pipe 115, first one-way valve 110, four-way valve 109, and third three-way valve 107 before returning to battery 101, forming a circulation loop. Thus, when the second energy storage device 104 meets the cooling requirements, its cold storage capacity is used to cool battery 101, thereby reducing the cooling consumption of battery 101.

[0261] S1710. Determine whether the temperature of the first medium after cooling is within the thirty-third preset temperature range and whether the temperature of the second medium after cooling is within the thirty-fourth preset temperature range.

[0262] If yes, then execute S1709. If no, then execute S1701.

[0263] It should be noted that the 31st, 32nd, 33rd, and 34th preset temperature ranges are pre-configured temperature ranges, and different temperature ranges can be set according to different energy storage media. This application does not specifically limit the specific temperature ranges in these ranges. The highest temperature in the 27th and 28th preset temperature ranges is lower than the cooling temperature. For example, the lowest temperature in the 31st and 33rd preset temperature ranges is higher than the cooling temperature of the fourth battery, while the lowest temperature in the 32nd and 34th preset temperature ranges is lower than the cooling temperature of the fourth electric drive. For example, the cooling temperature of the second battery is 35°C, and the cooling temperature of the third battery is 33°C.

[0264] In one design, after the energy storage device stores heat, such as Figure 18 The diagram shows a schematic of a heating process for battery 101, including:

[0265] S1801-S1813.

[0266] S1801, Obtain the first medium temperature of the first energy storage device 103 and the second medium temperature of the second energy storage device 104.

[0267] S1802, The temperature of the first medium is detected to be in the twenty-ninth temperature range and the temperature of the second medium is detected to be in the thirtieth temperature range.

[0268] In some embodiments, if the temperature of the first medium is detected to be in the twenty-ninth temperature range and the temperature of the second medium is detected to be in the thirtieth temperature range, S1803 is executed.

[0269] S1803, Run the second battery heating mode.

[0270] In this embodiment of the application, under the second battery heating mode, combined with Figure 9 The water flow is as follows: the heat exchange medium flows sequentially through battery 101, seventh three-way pipe 122, first three-way valve 105, fourth three-way pipe 118, first energy storage device 103, fifth three-way pipe 119, four-way valve 109, and third three-way valve 107 before returning to battery 101, forming a circulation loop. In this way, the heat exchange medium flows from battery 101 to the first energy storage device 103 and then back to battery 101, thereby heating battery 101 with the heat from the first energy storage device 103, thus achieving the goal of the first energy storage device 103 heating battery 101.

[0271] S1804. Determine whether the temperature of the first medium after heating is within the thirty-first temperature range and whether the temperature of the second medium after heating is within the thirty-second temperature range.

[0272] If yes, then execute S1803. If no, execute S1801.

[0273] S1805, The temperature of the first medium is detected to be in the twenty-ninth temperature range and the temperature of the second medium is detected to be in the thirty-third temperature range.

[0274] In some embodiments, if the temperature of the first medium is detected to be in the twenty-ninth temperature range and the temperature of the second medium is detected to be in the thirtieth temperature range, S1806 is executed.

[0275] S1806, Activate the fourth battery heating mode.

[0276] In this embodiment of the application, under the fourth battery heating mode, combined with Figure 9 The water flow consists of two paths. Heating water path 1: The heat exchanger flows sequentially through battery 101, seventh three-way pipe 122, first three-way valve 105, fourth three-way pipe 118, first energy storage device 103, fifth three-way pipe 119, four-way valve 109, and third three-way valve 107 before returning to battery 101, forming a loop. Heating water path 2: The heat exchanger flows sequentially through battery 101, seventh three-way pipe 122, double-way valve 121, sixth three-way pipe 120, third three-way pipe 116, second energy storage device 104, second three-way pipe 115, first one-way valve 110, four-way valve 109, and third three-way valve 107 before returning to battery 101, forming a loop. In this way, the heat from the first energy storage device 103 and the second energy storage device 104 is used to heat battery 101, achieving the goal of the energy storage device heating battery 101.

[0277] S1807. Whether the temperature of the first medium after heating is within the forty-first temperature range and whether the temperature of the second medium after heating is within the forty-second temperature range.

[0278] If yes, then execute S1806. If no, execute S1801.

[0279] It should be noted that the forty-first and forty-second temperature ranges are pre-configured.

[0280] S1808, The temperature of the first medium is detected to be in the thirty-third temperature range and the temperature of the second medium is detected to be in the thirty-fourth temperature range.

[0281] S1809, Activate the third battery heating mode.

[0282] In this embodiment of the application, under the third battery heating mode, combined with Figure 9The water flow is as follows: the heat exchanger flows sequentially through battery 101, seventh three-way pipe 122, two-way valve 121, sixth three-way pipe 120, third three-way pipe 116, second energy storage device 104, second three-way pipe 115, first one-way valve 110, four-way valve 109, and third three-way valve 107 before returning to battery 101, forming a circulation loop. In this way, the heat from the second energy storage device 104 is used to heat battery 101, thus achieving the goal of the second energy storage device 104 heating battery 101.

[0283] S1810. Whether the temperature of the first medium after heating is within the thirty-fifth temperature range and whether the temperature of the second medium after heating is within the thirty-sixth temperature range.

[0284] If yes, then execute S1809. If no, execute S1801.

[0285] S1811, The temperature of the first medium is detected to be in the thirty-seventh temperature range and the temperature of the second medium is detected to be in the thirty-eighth temperature range.

[0286] S1812, Activate the first battery heating mode.

[0287] S1813. Determine whether the temperature of the first medium after heating is within the thirty-ninth temperature range and whether the temperature of the second medium after heating is within the fortieth temperature range.

[0288] If yes, then execute S1812. If no, execute S1801.

[0289] Understandably, in the embodiments of this application, the first battery 101 is heated by the electric drive 102, the second battery 101 is heated by the first energy storage device 103, the third battery 101 is heated by the second energy storage device 104, and the fourth battery 101 is heated by both the first energy storage device 103 and the second energy storage device 104.

[0290] Based on the aforementioned thermal management system 10, this application provides a thermal management method, such as... Figure 19 The diagram shows a flow chart of a thermal management method, which includes steps S1901-S1903.

[0291] S1901. Obtain the temperature of the energy storage medium of the first energy storage device 103 and the temperature of the energy storage medium of the second energy storage device 104.

[0292] As one possible approach, while the vehicle is in operation, the temperature of the energy storage medium of the first energy storage device 103 and the temperature of the energy storage medium of the second energy storage device 104 are obtained.

[0293] In some embodiments, when the vehicle is in operation, in response to the operation of activating the energy storage device, the temperature of the energy storage medium of the first energy storage device 103 and the temperature of the energy storage medium of the second energy storage device 104 are obtained.

[0294] In other embodiments, the remaining power of battery 101 is obtained, and if the remaining power of battery 101 is less than or equal to a power threshold, the temperature of the energy storage medium of the first energy storage device 103 and the temperature of the energy storage medium of the second energy storage device 104 are obtained.

[0295] It should be noted that the power threshold is pre-configured by the maintenance personnel, and can be 50% or 60%. This application embodiment does not limit this.

[0296] S1902, when the temperature of the energy storage medium in the first energy storage device 103 meets the first heat exchange condition, heat exchange occurs between the first energy storage device 103 and the battery 101.

[0297] In this embodiment, the first heat exchange condition is that the temperature difference between the first energy storage device 103 and the battery 101 is greater than or equal to a first temperature threshold. It can also be that the temperature of the energy storage medium of the first energy storage device 103 is less than or equal to a second temperature threshold, or it can be that the temperature of the energy storage medium of the first energy storage device 103 is greater than or equal to a third temperature threshold. This embodiment does not limit the specific conditions.

[0298] For example, when the temperature of the energy storage medium in the first energy storage device 103 is less than or equal to a second temperature threshold, the heat of the battery 101 is recovered through the first energy storage device 103. As another example, when the temperature of the energy storage medium in the first energy storage device 103 is greater than or equal to a third temperature threshold, the battery 101 is heated through the first energy storage device 103.

[0299] It should be noted that the first temperature threshold, the second temperature threshold, and the third temperature threshold are pre-configured, and this application embodiment does not impose specific limitations on them.

[0300] S1903, when the temperature of the energy storage medium in the second energy storage device 104 meets the second heat exchange conditions, heat exchange occurs between the second energy storage device 104 and the electric drive.

[0301] It should be noted that in the embodiments of this application, S1902 and S1903 can be executed simultaneously, or only S1902 can be executed, or only S1903 can be executed. The embodiments of this application do not limit this.

[0302] In this embodiment, the second heat exchange condition is that the temperature difference between the second energy storage device 104 and the electric drive 102 is greater than or equal to the fourth temperature threshold. Alternatively, the temperature of the energy storage medium of the first energy storage device 103 may be less than or equal to the fifth temperature threshold, or the temperature of the energy storage medium of the first energy storage device 103 may be greater than or equal to the sixth temperature threshold. This embodiment does not limit the specific conditions.

[0303] For example, when the temperature of the energy storage medium in the first energy storage device 104 is less than or equal to the fifth temperature threshold, the heat from the electric drive 102 is recovered through the first energy storage device 104. As another example, when the temperature of the energy storage medium in the first energy storage device 103 is greater than or equal to the sixth temperature threshold, the device to be heated (such as the battery 101 or the heating system 114) in the thermal management system 10 is heated by the first energy storage device 103.

[0304] It should be noted that the fourth, fifth, and sixth temperature thresholds are pre-configured, and this application embodiment does not impose specific limitations on them.

[0305] In one possible manner, the above S1902 includes: S2001.

[0306] S2001. When the temperature of the energy storage medium in the first energy storage device 103 is within the first recovery temperature range, the heat of the battery is recovered.

[0307] In this embodiment of the application, the first recovery temperature range can be the first temperature range or the ninth temperature range mentioned above, or it can be other temperature ranges. This embodiment of the application does not limit the specific temperature range.

[0308] In some implementations, the above S1903 includes: S2002.

[0309] S2002, when the temperature of the energy storage medium in the second energy storage device 104 is within the second recovery temperature range, the heat of the electric drive is recovered through the second energy storage device 104; the highest temperature in the first recovery temperature range is lower than the lowest temperature in the second recovery temperature range.

[0310] In this embodiment of the application, the second recovery temperature range can be the aforementioned second temperature range, sixth temperature range, or twenty-second temperature range, or other temperature ranges. This embodiment of the application does not limit the specific temperature range.

[0311] In one possible configuration, the first energy storage device 103 is also coupled to the electric drive 102, and the thermal management method further includes S1904-S1905.

[0312] S1904. When the temperature of the first energy storage device 103 is in the third recovery temperature range, the heat of the battery and the electric drive is recovered through the first energy storage device 103.

[0313] In this embodiment of the application, the third recovery temperature range can be the aforementioned ninth temperature range, or it can be other temperature ranges. This embodiment of the application does not limit the specific temperature range.

[0314] S1905, when the temperature of the first energy storage device 103 is in the fourth recovery temperature range, the heat of the electric drive is recovered through the first energy storage device 103; the highest temperature in the third recovery temperature range is lower than the lowest temperature in the fourth recovery temperature range.

[0315] In this embodiment, the fourth recovery temperature range can be the fifth temperature range mentioned above, or it can be other temperature ranges. This embodiment does not limit the specific temperature range.

[0316] In one possible embodiment, the thermal management system 10 further includes a heating system 114. The thermal management method also includes S1906.

[0317] S1906. When the battery is charging and the temperature of the energy storage medium of the first energy storage device 103 is in the fifth recovery temperature range and the temperature of the energy storage medium of the second energy storage device 104 is in the sixth recovery temperature range, the heat from the heater of the warm air system is used to heat the first energy storage device 103 and the second energy storage device 104.

[0318] In this embodiment of the application, the fifth recovery temperature range can be the first preset temperature range mentioned above, and the sixth recovery temperature range can be the second preset temperature range mentioned above.

[0319] One possible approach to thermal management is S1907.

[0320] S1907. When the heating system is started, heat is supplied to the heating system through the first energy storage device 103 and the second energy storage device 104.

[0321] In addition, this application embodiment also provides a vehicle, including the thermal management system 10 as described above.

Claims

1. A thermal management system, characterized in that, The thermal management system, applied to vehicles, includes: Battery (101); Electric drive (102); The first energy storage device (103) is configured to exchange heat with the battery (101) and the electric drive (102); The second energy storage device (104) is configured to exchange heat with the electric drive (102) and the battery (101); The first energy storage device (103), the second energy storage device (104), the battery (101), and the electric drive (102) are connected by multiple connecting valves; The plurality of connecting valves include: a first three-way valve (105), a second three-way valve (106), a third three-way valve (107), a fourth three-way valve (108), a four-way valve (109), and a one-way valve (110); The first port of the first three-way valve (105) is connected to one end of the battery (101), the second port of the first three-way valve (105) is connected to the first interface of the first energy storage device (103), the third port of the first three-way valve (105) is connected to the first port of the fourth three-way valve (108), the first port of the second three-way valve (106) is connected to the first interface of the second energy storage device (104), the second port of the second three-way valve (106) is connected to one end of the electric drive (102), the third port of the second three-way valve (106) is connected to the first port of the third three-way valve (107), and the third three-way valve (107)... The second port of the first three-way valve (109) is connected to the first port of the four-way valve (109), the third port of the third three-way valve (107) is connected to the other end of the battery (101), the second port of the fourth three-way valve (108) is connected to the other end of the electric drive (102), the second port of the fourth three-way valve (108) is connected to the second port of the four-way valve (109), the third port of the four-way valve (109) is connected to the second interface of the first energy storage device (103), the fourth port of the four-way valve (109) is connected to the outlet of the one-way valve (110), and the inlet of the one-way valve (110) is connected to the second interface of the second energy storage device (104).

2. The thermal management system according to claim 1, characterized in that, The energy storage medium of the first energy storage device (103) and the energy storage medium of the second energy storage device (104) are phase change materials; The phase change temperature of the energy storage medium of the first energy storage device (103) is less than or equal to the first temperature, and the phase change temperature of the energy storage medium of the second energy storage device (104) is less than or equal to the second temperature. The first temperature is the highest temperature reached by the battery (101) in the working state, and the second temperature is the highest temperature reached by the electric drive (102) in the working state.

3. The thermal management system according to claim 1, characterized in that, The first energy storage device (103) is specifically configured to recover the heat of the battery (101) when the temperature of the energy storage medium of the first energy storage device (103) is within the first recovery temperature range; The second energy storage device (104) is specifically configured to recover the heat of the electric drive (102) when the temperature of the energy storage medium of the second energy storage device (104) is within the second recovery temperature range.

4. The thermal management system according to claim 1, characterized in that, The first energy storage device (103) is also coupled to the electric drive (102); The first energy storage device (103) is specifically configured to recover the heat of the battery (101) and the electric drive (102) when the temperature of the first energy storage device (103) is in the third recovery temperature range; Heat from the electric drive (102) is recovered when the temperature of the first energy storage device (103) is in the fourth recovery temperature range; the highest temperature in the third recovery temperature range is lower than the lowest temperature in the fourth recovery temperature range.

5. The thermal management system according to claim 1, characterized in that, The electric drive (102) is coupled to the battery (101); The electric drive (102) is configured to heat the battery (101) when the temperature of the battery (101) is lower than a first heating temperature, the temperature of the first energy storage device (103) is in a first heating temperature range, and the temperature of the second energy storage device (104) is in a second heating temperature range.

6. The thermal management system according to claim 1, characterized in that, The thermal management system also includes: An engine (111) is coupled to the first energy storage device (103) and the second energy storage device (104), respectively; the first energy storage device (103) and the second energy storage device (104) are further configured to recover the heat of the engine (111) when the engine (111) is started.

7. The thermal management system according to claim 1, characterized in that, The thermal management system also includes: A heating system (114) is coupled to the first energy storage device (103) and the second energy storage device (104), respectively; and is configured to heat the first energy storage device (103) and the second energy storage device (104) by the heat from the heater of the heating system (114) when the battery (101) is charging, the temperature of the energy storage medium of the first energy storage device (103) is in the fifth recovery temperature range and the temperature of the energy storage medium of the second energy storage device (104) is in the sixth recovery temperature range.

8. The thermal management system according to claim 7, characterized in that, The first energy storage device (103) and the second energy storage device (104) are further configured to provide heat to the heating system (114) when the heating system (114) is started.

9. The thermal management system according to any one of claims 1-8, characterized in that, The thermal management system also includes: The compressor is coupled to the first energy storage device (103) and the second energy storage device (104), respectively; The first energy storage device (103) and the second energy storage device (104) are further configured to absorb the cooling capacity of the compressor when the battery (101) is in a charging state, the temperature of the first energy storage device (103) is in a first cooling temperature range, and the temperature of the second energy storage device (104) is in a second cooling temperature range.

10. The thermal management system according to claim 9, characterized in that, The first energy storage device (103) is further configured to cool the battery (101) when the temperature of the first energy storage device (103) is in a third cooling temperature range, the temperature of the second energy storage device (104) is in a fourth cooling temperature range, and the temperature of the battery (101) is greater than or equal to the third temperature. The second energy storage device (104) is further configured to cool the battery (101) when the temperature of the first energy storage device (103) is in the fifth cooling temperature range and the temperature of the second energy storage device (104) is in the sixth cooling temperature range.

11. A thermal management method, characterized in that, Applied to a thermal management system as described in any one of claims 1-10; the method comprises: The temperature of the energy storage medium of the first energy storage device (103) and the temperature of the energy storage medium of the second energy storage device (104) are obtained; When the temperature of the energy storage medium in the first energy storage device (103) meets the first heat exchange condition, heat exchange occurs between the first energy storage device (103) and the battery (101). When the temperature of the energy storage medium in the second energy storage device (104) meets the second heat exchange condition, heat exchange occurs between the second energy storage device (104) and the electric drive (102).

12. A vehicle, characterized in that, Including a thermal management system as described in any one of claims 1-10.

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