Thermal management system, thermal management method and vehicle

Abstract

The invention 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 comprises: a target device (101); an energy storage device (102) coupled to the target device (101); and a heat recovery unit (102) configured to recover heat of the target device (101) when the energy storage device (102) satisfies the energy storage condition, and release heat to the target device (101) when the energy storage device (102) satisfies the heat release condition. Thus, the energy storage equipment collects the heat generated in the using process of the target equipment and outputs the heat when the target equipment needs to be heated, so that the heat generated by the vehicle is effectively utilized, the heat loss in the using process is reduced, and then the endurance mileage of the vehicle is increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a thermal management system, a thermal management method and a vehicle. BACKGROUND

[0002] The power battery is the power source of the electric vehicle. During use, the current of the power battery will flow through the battery pack and the electric drive and other high-power devices. Due to the internal resistance of the high-power devices, heat is inevitably generated. As a result, part of the electric energy of the electric vehicle is consumed in the form of heat, and the more heat consumed, the greater the impact on the range of the electric vehicle.

[0003] The related technical solution discloses an electric vehicle waste heat recovery system, which specifically proposes to utilize the principle that the motor generates heat faster than the battery at the initial stage of vehicle starting, to introduce the waste heat of the motor into the battery circulation system. The use of waste heat in the entire process is still limited to direct use of heat. However, in the case that the battery heat is sufficient after the battery is used for a period of time, the electric drive heat will still be wasted to a great extent. The related technical solution further discloses a whole vehicle thermal management system and an electric vehicle, which proposes a whole vehicle thermal management system mainly using heat management means to reduce heat waste. However, the heat generation of the electric drive and the battery pack still exists, which will still be wasted with the use of the vehicle.

[0004] Therefore, how to utilize the heat of the vehicle is a technical problem that needs to be solved urgently. SUMMARY

[0005] One of the purposes of the present application is to provide a thermal management system, a thermal management method and a vehicle for utilizing the heat of the vehicle.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present application is as follows:

[0007] According to the first aspect of the present application, a thermal management system is provided, which comprises: a target device; an energy storage device coupled to the target device; and a configuration configured to recover the heat of the target device when the energy storage device meets the energy storage condition, and release the heat to the target device when the energy storage device meets the heat release condition.

[0008] In one possible manner, the target device comprises a battery and / or an electric drive.

[0009] In one possible manner, the energy storage medium of the energy storage device is a phase change material; the phase change temperature of the phase change material is less than or equal to a first temperature; and the first temperature is the highest temperature reached by the battery in the working state.

[0010] In a possible implementation, the target device includes a battery and an electric drive, and the energy storage device is specifically configured to: recover heat of the battery when a temperature of the energy storage medium of the energy storage device is in a first temperature range; and recover heat of the electric drive when the temperature of the energy storage medium of the energy storage device is in a second temperature range.

[0011] In a possible implementation, the target device includes a battery, and the energy storage device is specifically configured to: heat the battery when the battery is in a heating state and a temperature of the energy storage medium is in a third temperature range.

[0012] In a possible implementation, the thermal management system further includes an engine, the target device includes a battery, and the engine is connected to the energy storage device; and the energy storage device is further configured to: recover heat of the engine when temperatures of first cooling liquid and second cooling liquid are greater than or equal to a temperature of the energy storage device; the first cooling liquid is cooling liquid of a cooling loop in which the engine is located, and the second cooling liquid is cooling liquid of a cooling loop in which the battery is located.

[0013] In a possible implementation, the thermal management system further includes a heating system, and the heating system is connected to the energy storage device; and the energy storage device is further configured to: supply heat for the heating system when the heating system is started.

[0014] In a possible implementation, the target device includes a battery and a heating system, and the heating system is configured to: heat the energy storage device when the battery is in a charging state, a remaining time of charging is greater than or equal to a first time length, a current ambient temperature is less than or equal to a first temperature, and a temperature of an energy storage medium of the energy storage device is in a fourth temperature range.

[0015] In a possible implementation, the thermal management system further includes a compressor, the target device includes a battery, and the compressor is connected to the battery; and the thermal management system is configured to: cool the energy storage device by using refrigerant compressed by the compressor when the battery is in a charging state, a remaining time of charging is greater than or equal to a second time length, a current ambient temperature is greater than or equal to a second temperature, and a rotating speed of the compressor is greater than or equal to a preset rotating speed.

[0016] In a possible implementation, the energy storage device is further configured to: cool the battery when the battery is in a cooling state and a temperature of the energy storage medium of the energy storage device is in a fifth temperature range.

[0017] In one possible implementation, the target device includes a battery and an electric drive. The thermal management system further includes a first three-way valve and a second three-way valve. A first port of the first three-way valve is connected to a first interface of the energy storage device, a second port of the first three-way valve is connected to one end of the battery, a third port of the first three-way valve is connected to one end of the electric drive, a first port of the second three-way valve is connected to a second interface of the energy storage device, a second port of the second three-way valve is connected to another end of the battery, and a third port of the second three-way valve is connected to another end of the electric drive.

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

[0019] According to a second aspect provided in the present application, a thermal management method is provided, which is applied to the thermal management system of the first aspect. The method includes:

[0020] The working temperature of the thermal management system is obtained. In a case where the working temperature of the thermal management system meets an energy storage condition, the heat of the target device is recovered by the energy storage device. In a case where the working temperature of the thermal management system meets a heat release condition, the heat is released to the target device by the energy storage device.

[0021] In one possible implementation, the target device includes a battery and an electric drive, and in the case where the energy storage condition is met, the heat of the target device is recovered by the energy storage device, including: in a case where the temperature of the energy storage medium of the energy storage device is located in a first temperature range, the heat of the battery is recovered; and in a case where the temperature of the energy storage medium is located in a second temperature range, the heat of the electric drive is recovered.

[0022] In one possible implementation, in the case where the heat release condition is met, the heat is released to the target device by the energy storage device, including: in a case where the battery is in a heating state and the temperature of the energy storage medium of the energy storage device is located in a third temperature range, the battery is heated.

[0023] In one possible implementation, the thermal management system further includes an engine, and the method further includes: in a case where the temperatures of a first cooling liquid and a second cooling liquid are greater than or equal to the temperature of the energy storage medium of the energy storage device, the heat of the engine is recovered; the first cooling liquid is a cooling liquid of a cooling loop in which the engine is located, and the second cooling liquid is a cooling liquid of a cooling loop in which the battery is located.

[0024] In a possible manner, the thermal management system further comprises a heater system, and the method further comprises: in a case where the battery is in a charging state, a remaining time of the charging is greater than or equal to the first time length, the current ambient temperature is less than or equal to the first temperature, and the temperature of the energy storage medium of the energy storage device is in the fourth temperature interval, heating the energy storage device by the heater system.

[0025] According to a third aspect provided in the present application, a vehicle is provided, which comprises the thermal management system of the first aspect.

[0026] Therefore, the above technical features of the present application have the following beneficial effects:

[0027] 1. The thermal management system is configured with an energy storage device. In this way, the energy storage device collects the heat generated during the use of the target device and outputs the heat when the target device needs to be heated, thereby effectively utilizing the heat generated by the vehicle, reducing heat loss during use, and further improving the cruising range of the vehicle.

[0028] 2. The energy storage device is configured with a corresponding phase change material, so that in the process of heat absorption, the temperature of the phase change material of the energy storage device is lower than the temperature of the cooling liquid, thereby absorbing as much heat as possible, and in the process of heat release, providing more heat for the corresponding device.

[0029] 3. In the case where the heater system is started, the energy storage device is used to supply heat to the heater system, so that the battery does not need to consume electricity to heat the heater, and the cruising ability of the vehicle can be improved.

[0030] 4. The energy storage device can also be used for cold storage, so that in the case where the vehicle needs to be refrigerated, the cold storage capacity of the energy storage device is used to refrigerate the vehicle, thereby reducing the amount of electricity consumed by the battery and improving the cruising ability of the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 FIG. 1 is a structural schematic diagram of a thermal management system according to an example embodiment;

[0032] Figure 2 FIG. 2 is a structural schematic diagram of an energy storage device according to an example embodiment;

[0033] Figure 3 FIG. 3 is a flowchart for determining an energy storage medium according to an example embodiment;

[0034] Figure 4 FIG. 4 is a connection system structural schematic diagram of a control unit according to an example embodiment;

[0035] Figure 5 FIG. 5 is a structural schematic diagram of a thermal management system according to another example embodiment;

[0036] Figure 6 Fig. 3 is a structural schematic diagram of a heat management system according to an exemplary embodiment;

[0037] Figure 7 Fig. 4 is a structural schematic diagram of a heat management system according to an exemplary embodiment;

[0038] Figure 8 Fig. 5 is a structural schematic diagram of a heat management system according to an exemplary embodiment;

[0039] Figure 9 Fig. 6 is a schematic diagram of a heat recovery management process according to an exemplary embodiment;

[0040] Figure 10 Fig. 7 is a schematic diagram of a management process of a heat recovery management system including an engine according to an exemplary embodiment;

[0041] Figure 11 Fig. 8 is a schematic diagram of a heating process according to an exemplary embodiment;

[0042] Figure 12 Fig. 9 is a schematic diagram of a heat supply process according to an exemplary embodiment;

[0043] Figure 13 Fig. 10 is a schematic diagram of an energy storage process according to an exemplary embodiment;

[0044] Figure 14 Fig. 11 is a schematic diagram of a cold energy storage process according to an exemplary embodiment;

[0045] Figure 15 Fig. 12 is a schematic diagram of a heat management method according to an exemplary embodiment.

[0046] BRIEF DESCRIPTION OF DRAWINGS

[0047] 10, heat management system; 101, target device; 1011, battery; 1012, electric drive; 102, energy storage device; 1021, heat exchange component; 1022, energy storage medium; 1023, first interface; 1024, second interface; 1025, thermal insulation layer; 103, engine; 104, first three-way valve; 105, second three-way valve; 106, third three-way valve; 107, first three-way pipe; 108, second three-way pipe; 109, third three-way pipe; 110, heating system. DETAILED DESCRIPTION

[0048] The present application will be described with reference to the attached drawings and preferred embodiments, which are given by way of illustration and not limitation. The present application is susceptible to numerous

[0049] It is to be understood that the terminology used herein is for purpose of describing the present application and is not intended to be limiting. It is also possible, however, to use different or

[0050] As described in the above background section, currently, the electric energy of the battery is consumed in the form of heat energy. Therefore, how to utilize the heat generated by the vehicle is a technical problem that needs to be solved urgently.

[0051] To solve the above technical problem, as shown in Figure 1 Figure 1 A heat management system 10 according to an example embodiment is shown, which includes a target device 101, an energy storage device 102 coupled to the target device 101, and configured to recover heat from the target device 101 when the energy storage device 102 satisfies an energy storage condition, and release heat to the target device 101 when the energy storage device 102 satisfies a heat release condition.

[0052] In one design, the target device 101 includes a battery 1011 and / or an electric drive 1012.

[0053] For example, the heat management system 10 includes a battery 1011, an electric drive 1012, and an energy storage device 102. The energy storage device 102 is connected to the battery 1011 and the electric drive 1012, respectively. The energy storage device 102 is configured to recover heat from the target device 101 when the energy storage device 102 satisfies an energy storage condition, and release heat to the target device 101 when the energy storage device 102 satisfies a heat release condition. The target device 101 is the battery 1011 and / or the electric drive 1012.

[0054] In some embodiments, the energy storage device 102, the battery 1011, and the electric drive 1012 are connected through a plurality of connection valves.​

[0055] In the embodiments of the present application, the battery 1011 can be understood as a battery thermal management system, and the electric drive 1012 can be understood as an electric drive cooling system. In this way, when the energy storage device 102 is connected with the battery 1011, the energy storage device 102 exchanges heat with the heat exchange medium (such as water) of the battery thermal management system, and when the energy storage device 102 is connected with the electric drive 1012, the energy storage device 102 exchanges heat with the cooling liquid of the electric drive cooling system.

[0056] In the embodiments of the present application, the energy storage condition can include at least one of the temperature of the energy storage device 102 being lower than an energy storage temperature, the temperature of the target device 101 being higher than a heating temperature, and the battery 1011 being in a charging state. The energy storage condition can be at least one of the temperature of the energy storage device 102 being in an energy storage temperature range, the temperature of the target device 101 being in a first heating temperature range, and the battery 1011 being in a charging state.

[0057] It should be noted that the energy storage temperature, the heating temperature, the energy storage temperature range, and the first heating temperature range are preconfigured, and the embodiments of the present application do not limit this. For example, the energy storage temperature can be 20℃, and the heating temperature can be 40℃.

[0058] In the embodiments of the present application, the heat release condition can be that the temperature of the energy storage device 102 is higher than a heat release temperature and the temperature of the target device 101 is lower than an operating temperature. The heat release condition can also be that the temperature of the energy storage device 102 is in a heat release temperature range and the temperature of the target device 101 is in a second heating temperature range.

[0059] It should be noted that the heat release temperature, the operating temperature, the heat release temperature range, and the second heating temperature range are preconfigured, and the embodiments of the present application do not limit this. For example, the heat release temperature can be 40℃, and the second heating temperature can be 25℃.

[0060] In the embodiments of the present application, the energy storage device 102 is a device for storing energy. The energy storage device 102 can include an energy storage medium 1022 and a heat interaction component 1021, and the energy storage device 102 can also include an insulation layer 1025, and the embodiments of the present application do not limit the specific structure of the energy storage device 102.

[0061] For example, as shown in FIG. 1, an energy storage device 102 according to an example embodiment is shown. In the example embodiment, the energy storage device 102 includes a heat interaction component 1021, an energy storage medium 1022 (also referred to as a heat exchange medium), a first interface 1023, a second interface 1024, and an insulation layer 1025. Figure 2 Figure 2 For example, as shown in FIG. 1, an energy storage device 102 according to an example embodiment is shown. In the example embodiment, the energy storage device 102 includes a heat interaction component 1021, an energy storage medium 1022 (also referred to as a heat exchange medium), a first interface 1023, a second interface 1024, and an insulation layer 1025. Figure 2

[0062] ​​In the embodiments of the present application, the first interface 1023 can be a first pipeline, and the second interface 1024 can be a second pipeline. In this way, the coolant in the thermal management system 10 is connected to the energy storage device 102 through the first interface 1023 and the second interface 1024, so that the coolant exchanges heat with the energy storage medium 1022.

[0063] For example, the first interface 1023 and the second interface 1024 can be connected to the battery thermal management system, so that the energy storage medium 1022 of the energy storage device 102 exchanges heat with the coolant of the battery thermal management system. For another example, the first interface 1023 and the second interface 1024 can be connected to the cooling system of the electric drive 1012, so that the energy storage medium 1022 of the energy storage device 102 exchanges heat with the coolant of the cooling system of the electric drive 1012.

[0064] In the embodiments of the present application, the heat exchange component 1021 can adopt a structure of multiple water channels and multiple heat exchange fins. The material of the heat exchange component 1021 is a metal material, such as aluminum material or copper material. For example, the heat exchange component 1021 is made of aluminum, so as to reduce the weight of the energy storage device 102 and increase the heat exchange area of the heat exchange medium.

[0065] In the embodiments of the present application, the energy storage medium 1022 can adopt a phase change material. The phase change material can be sodium sulfate decahydrate with low cost and large latent heat, and paraffin is the main material.

[0066] In some embodiments, by calibrating the optimal working temperature range of the battery, the most suitable phase change material is determined from multiple groups of phase change materials to be used as the energy storage medium 1022 of the energy storage device 102, so that the selected phase change material can keep the temperature as low as possible during heat absorption, so as to absorb as much heat as possible.

[0067] In some embodiments, as shown in FIG. 10, Figure 3 Figure 3 FIG. 11 is a flow diagram illustrating a process of determining the energy storage medium 1022 according to an exemplary embodiment, which includes S301-S303.

[0068] S301, calibrate the optimal working temperature range of the battery.

[0069] In some embodiments, the optimal working temperature range of the battery 1011 is determined according to the parameters of the battery 1011. The parameters of the battery 1011 include at least one of internal resistance, capacity, energy density, and charge-discharge rate.

[0070] ​In the embodiments of the present application, the optimal working temperature range of the battery 1011 is a temperature range in which the working performance of the battery is best and the service life of the battery is beneficial. For example, the optimal working temperature range of the battery 1011 is 45-50°C.

[0071] In the embodiments of the present application, the optimal working temperature range of the battery 1011 is a temperature range in which the working performance of the battery is best and the service life of the battery is beneficial. For example, the optimal working temperature range of the battery 1011 is 45-50°C.

[0072] In the embodiments of the present application, the optimal working temperature range of the battery 1011 is a temperature range in which the working performance of the battery is best and the service life of the battery is beneficial. For example, the optimal working temperature range of the battery 1011 is 45-50°C.

[0073] For example, the optimal working temperature range of the battery 1011 is 45-50°C. The phase change temperature of the energy storage medium 1022 can be 45°C, can be 50°C, and can also be 49°C, which is not limited in the embodiments of the present application.

[0074] In some embodiments, the highest temperature reached by the battery 1011 in the working state is determined. Further, the phase change temperature of the phase change material is determined to be less than or equal to the highest temperature.

[0075] S303, determining the energy storage medium 1022.

[0076] In some embodiments, a plurality of candidate energy storage media 1022 are configured for the energy storage device 102. Subsequently, in the case of determining the phase change temperature of the energy storage medium 1022 of the energy storage device 102, the heat absorption of each candidate energy storage medium 1022 is determined, and the candidate energy storage medium 1022 with the largest heat absorption is determined as the energy storage medium 1022. That is, the heat absorption efficiency of the phase change material of each candidate energy storage medium 1022 is verified, and the material with the largest latent heat coefficient in unit time is selected as the energy storage medium 1022.

[0077] In the embodiments of the present application, the material with the largest latent heat coefficient is the material that absorbs the most heat. It can be understood that the material with the largest latent heat coefficient is the material with the largest specific heat capacity.

[0078] For example, the plurality of candidate energy storage media 1022 include a plurality of candidate materials: ΔT1 material, ΔT2 material, and ΔT3 material. The total heat absorbed by the ΔT1 material, the ΔT2 material, and the ΔT3 material is determined respectively, and in the case of determining that the ΔT3 material absorbs the most heat, the ΔT3 material is determined as the energy storage material of the energy storage medium 1022.

[0079] It can be understood that by calibrating the optimal working temperature range of the device, the target phase change material is determined from a plurality of candidate phase change materials to be used as a heat exchange medium. Thus, the phase change material is selected to absorb as much heat as possible in the process of absorbing heat while keeping the temperature as low as possible below the coolant temperature of the battery.

[0080] In some embodiments, the energy storage device 102 is configured to recover heat of the battery 1011 and heat the battery 1011.

[0081] In some other embodiments, the energy storage device 102 is configured to recover heat of the electric drive 1012 and heat the battery 1011.

[0082] It can be understood that, in a case where the temperature of the battery 1011 is relatively high and the temperature of the energy storage device 102 is relatively low, the energy storage device 102 recovers heat of the battery 1011. In a case where the temperature of the battery 1011 is relatively low and the temperature of the energy storage device 102 is relatively high, the energy storage device 102 heats the battery 1011.

[0083] The heat management system 10 provided by the embodiments of the present application at least has the following beneficial effects: the heat management system 10 is configured with the energy storage device 102. In this way, the energy storage device 102 collects heat generated by the target device 101 during use and outputs heat when the target device 101 needs to be heated, thereby effectively utilizing heat generated by the vehicle and reducing heat loss during use, so as to improve the cruising range of the vehicle.

[0084] In some embodiments, the energy storage device 102 is specifically configured to recover heat of the battery 1011 in a case where the temperature of the energy storage device 102 is located in a first temperature range, and recover heat of the electric drive 1012 in a case where the temperature of the energy storage device 102 is located in a second temperature range.

[0085] In some embodiments, the energy storage device 102 is specifically configured to heat the battery 1011 in a case where the battery 1011 is in a heating state and the temperature of the energy storage device 102 is located in a third temperature range.

[0086] In some embodiments, the heat management system 10 further includes an engine 103 connected with the energy storage device 102. The energy storage device 102 is further configured to recover heat of the engine 103 in a case where the temperature of a first cooling liquid and the temperature of a second cooling liquid are greater than or equal to the temperature of the energy storage device 102, the first cooling liquid being a cooling liquid of a cooling loop in which the engine 103 is located, and the second cooling liquid being a cooling liquid of a cooling loop in which the battery 1011 is located.

[0087] In some embodiments, the heat management system 10 includes a heating system 110 connected with the energy storage device 102. The energy storage device 102 is further configured to supply heat for the heating system 110 in a case where the heating system 110 is started.

[0088] In some embodiments, the warm air system 110 is configured to heat the energy storage device 102 when the battery 1011 is in a charging state, a remaining time of charging is greater than or equal to a first time length, a current ambient temperature is less than or equal to a first temperature, and a temperature of the energy storage device 102 is in a fourth temperature interval.

[0089] In some embodiments, the thermal management system 10 further comprises a compressor connected with the battery; the thermal management system 10 is configured to cool the energy storage device 102 by using refrigerant compressed by the compressor when the battery 1011 is in a charging state, a remaining time of charging is greater than or equal to a second time length, a current ambient temperature is greater than or equal to a second temperature, and a rotating speed of the compressor is greater than or equal to a preset rotating speed.

[0090] It should be noted that the second temperature is pre-configured. For example, the second temperature can be 25°C, 26°C, or 24°C, which is not limited in the embodiments of the present application.

[0091] In some embodiments, the energy storage device 102 is further configured to cool the battery 1011 when the battery 1011 is in a cooling state and a temperature of the energy storage device 102 is in a fifth temperature interval.

[0092] In order to better understand the thermal management system 10 provided by the embodiments of the present application, the thermal management system 10 in the embodiments of the present application 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 can be a device in the thermal management system 10, which is not limited in the embodiments of the present application. For example, as shown in Figure 4 , Figure 4 is a connection system structure diagram of a control unit 20 according to an exemplary embodiment. In Figure 4 , the control unit 20 is shown to be connected with a temperature sensor T, a plurality of connection valves (three connection valves S1, S2 and S3 are shown in Figure 4 , and a device controller K. The temperature sensor T is used to collect the temperature of the energy storage device 102.

[0093] It should be noted that the control unit 20 can be connected with more temperature sensors. For example, the control unit 20 is also connected with a temperature sensor for measuring the temperature of the battery 1011, so as to obtain the temperature of the battery 1011.

[0094] Figure 4The plurality of connection valves in the heat management system 10 are used to realize the flow direction of the heat exchange medium in the heat management system 10. The device controller K is used to control the operation mode of the target device 101. For example, the device controller K is a cooling control unit of the engine 103, which is used to control the operation and shutdown of the engine cooling system in which the engine 103 is located.

[0095] In some embodiments, in combination with Figure 1 As shown in Figure 5 , Figure 5 The heat management system 10 further includes a first three-way valve 104 and a second three-way valve 105. The first port of the first three-way valve 104 is connected with the first interface 1023 of the energy storage device 102, the second port of the first three-way valve 104 is connected with one end of the battery, the third port of the first three-way valve 104 is connected with one end of the electric drive 1012, the first port of the second three-way valve 105 is connected with the second interface 1024 of the energy storage device 102, the second port of the second three-way valve 105 is connected with the other end of the battery, and the third port of the second three-way valve 105 is connected with the other end of the electric drive 1012.

[0096] In some embodiments, in combination with Figure 5 As shown in Figure 6 , Figure 6 The heat management system 10 further includes an engine 103, a third three-way valve 106 and a first three-way pipe 107. The first port of the third three-way valve 106 is connected with the first interface 1023 of the energy storage device 102, the second port of the third three-way valve 106 is connected with the first port of the first three-way valve 104, the third port of the third three-way valve 106 is connected with one end of the engine 103, the first port of the first three-way pipe 107 is connected with the second interface 1024 of the energy storage device 102, the second port of the first three-way pipe 107 is connected with the first port of the second three-way valve 105, and the third port of the first three-way pipe 107 is connected with the second interface of the engine 103.

[0097] In the embodiment, the energy storage device 102 is connected with the engine 103 through the connection valve, and the energy storage device 102 can be connected with the engine cooling system in which the engine 103 is located through the connection valve. In this way, the energy storage medium 1022 of the energy storage device 102 exchanges heat with the cooling liquid of the engine cooling system.

[0098] In some embodiments, in combination with Figure 5 As shown in Figure 7 , Figure 7The heat management system 10 further comprises a warm air system 110, a second three-way pipe 108, and a third three-way pipe 109. The first port of the second three-way pipe 108 is connected with the first interface 1023 of the energy storage device 102, the second port of the second three-way pipe 108 is connected with the first port of the first three-way valve 104, and the third port of the second three-way pipe 108 is connected with the first interface of the warm air system 110. The first port of the third three-way pipe 109 is connected with the second interface 1024 of the energy storage device 102, the second port of the third three-way pipe 109 is connected with the first port of the second three-way valve 105, and the third port of the third three-way pipe 109 is connected with the second interface of the warm air system 110.

[0099] It can be understood that the warm air system 110 is connected with the energy storage device 102 through the connection valve. In this way, the cold liquid of the warm air system 110 exchanges heat with the energy storage medium 1022 of the energy storage device 102.

[0100] In some embodiments, in combination with Figure 7 As Figure 8 shown, Figure 8 The heat management system 10 further comprises an engine 103, a third three-way valve 106, and a first three-way pipe 107.

[0101] The first port of the first three-way pipe 107 is connected with the second port of the third three-way pipe 109, the second port of the first three-way pipe 107 is connected with the first port of the second three-way valve 105, and the third port of the first three-way pipe 107 is connected with the second interface of the engine 103. The first port of the third three-way valve 106 is connected with the second port of the second three-way pipe 108, the second port of the third three-way valve 106 is connected with the first port of the first three-way valve 104, and the third port of the third three-way valve 106 is connected with the first interface of the engine 103.

[0102] In order to better understand the heat management strategy of the heat management system 10 provided by the embodiments of the present application, as Figure 9 shown, Figure 9 A heat recovery management flowchart according to an exemplary embodiment is shown, comprising: S901-S905.

[0103] S901, obtaining the temperature of the energy storage device 102.

[0104] In some embodiments, the temperature of the energy storage device 102 is obtained when the vehicle is in a running state.

[0105] In some embodiments, the temperature of the energy storage device 102 is obtained when the battery 1011 is in a charging state.

[0106] S902, in the case that the temperature of the energy storage device 102 is in a first temperature range, a first battery heating mode is run.

[0107] In some embodiments, the first battery heating mode is run when the temperature of the energy storage device 102 is in the first temperature interval and the temperature of the battery is greater than the first preset temperature.

[0108] It should be noted that the first preset temperature is pre-configured. The first preset temperature can be 40℃, and can also be 41℃, which is not limited by the embodiments of the present application.

[0109] For example, in combination with Figure 5 , the waterway of the first battery heating mode is: battery 1011→first three-way valve 104→energy storage device 102→second three-way valve 105→battery 1011. That is, the coolant in the thermal management system 10 flows from the battery to the energy storage device 102, so that the energy storage device 102 recovers the heat of the battery 1011.

[0110] S903, whether the temperature of the heated energy storage device 102 is in the sixth temperature interval.

[0111] If yes, S902 is executed. If no, S901 is executed.

[0112] S904, the first electric drive heating mode is run when the temperature of the energy storage device 102 is in the second temperature interval.

[0113] In some embodiments, the first electric drive heating mode is run when the temperature of the energy storage device 102 is in the second temperature interval and the temperature of the electric drive 1012 is greater than the second preset temperature.

[0114] It should be noted that the second preset temperature is pre-configured. The second preset temperature can be 60℃, and can also be 91℃, which is not limited by the embodiments of the present application.

[0115] For example, in combination with Figure 5 , the waterway of the electric drive 1012 heating mode is: electric drive 1012→first three-way valve 104→energy storage device 102→second three-way valve 105→electric drive 1012. That is, the coolant in the thermal management system 10 flows from the electric drive 1012 to the energy storage device 102, so that the energy storage device 102 recovers the heat of the electric drive 1012.

[0116] S905, whether the temperature of the heated energy storage device 102 is in the seventh temperature interval.

[0117] If yes, S904 is executed. If no, S901 is executed.

[0118] It should be noted that the first temperature range, the second temperature range, the sixth temperature range and the seventh temperature range are pre-configured. The highest temperature of the first temperature range is lower than the lowest temperature of the second temperature range. The second temperature range can be the temperature range in which the battery works best, and the seventh temperature range can be the temperature range in which the electric drive 1012 works best.

[0119] In one design, as Figure 10 , Figure 10 is a management flowchart of a heat recovery management system including an engine 103 according to an exemplary embodiment, including: S1001-S1007.

[0120] S1001, obtain the temperature of the energy storage device 102.

[0121] S1002, in the case where the temperature of the energy storage device 102 is in the first temperature range, run the second battery heating mode.

[0122] Exemplarily, in combination with Figure 6 , the water circuit of the second battery heating mode is: battery 1011→first three-way valve 104→third three-way valve 106→energy storage device 102→first three-way pipe 107→second three-way valve 105→battery 1011.

[0123] S1003, whether the temperature of the heated energy storage device 102 is in the sixth temperature range.

[0124] If yes, execute S1002. If no, execute S1001.

[0125] S1004, in the case where the temperature of the energy storage device 102 is in the second temperature range, run the second electric drive heating mode.

[0126] Exemplarily, in combination with Figure 6 , the water circuit of the second electric drive 1012 heating mode is: electric drive 1012→first three-way valve 104→third three-way valve 106→energy storage device 102→first three-way pipe 107→second three-way valve 105→electric drive 1012.

[0127] S1005, whether the temperature of the heated energy storage device 102 is in the seventh temperature range.

[0128] If yes, execute S1004. If no, execute S1001.

[0129] S1006, in the case where the temperature of the energy storage device 102 is in the eighth temperature range, run the engine heating mode.

[0130] Exemplarily, in combination with Figure 6, the water path of the engine 103 heating mode is: the engine 103→the third three-way valve 106→the energy storage device 102→the first three-way pipe 107→the engine 103. In this way, the coolant in the thermal management system 10 is heated by the engine 103 to the energy storage device 102, so that the energy storage device 102 recovers the heat of the engine 103.

[0131] S1007, whether the temperature of the heated energy storage device 102 is in the ninth temperature range.

[0132] If yes, S1006 is executed. If no, S1001 is executed.

[0133] It should be noted that the eighth temperature range and the ninth temperature range are pre-configured temperature ranges, and the embodiments of the present application are not limited.

[0134] In some embodiments, in the case that both the battery and the engine 103 meet the condition of heating the energy storage device 102, the priority of the engine 103 is higher than that of the battery.

[0135] First priority: when the engine 103 is running, if the outlet water temperature of the engine 103 is greater than or equal to the temperature of the energy storage device 102, the engine 103 is used to heat the energy storage device 102.

[0136] Second priority: when the battery is overheated, if the outlet water temperature of the battery is greater than or equal to the temperature of the energy storage device 102, the battery is used to heat the energy storage device 102.

[0137] It should be noted that the outlet water temperature of the engine 103 is the temperature of the coolant after cooling the engine 103. In combination with Figure 6 , the outlet water temperature of the engine 103 can be the temperature after flowing out of the engine 103 or the temperature of the coolant of the engine 103 reaching the third three-way valve 106. The outlet water temperature of the battery is the temperature of the coolant after cooling the battery. In combination with Figure 6 , the outlet water temperature of the battery is the temperature after flowing out of the battery or the temperature of the coolant of the battery reaching the first three-way valve 104.

[0138] It can be understood that in the case that the outlet water temperatures of the engine 103 and the battery are both greater than or equal to the temperature of the energy storage device 102, the engine 103 is preferentially used to heat the energy storage device 102.

[0139] In one design, after the energy storage device 102 is heated, the energy storage device 102 is used to heat the target device 101 when the vehicle needs to be heated. As Figure 11 shown, Figure 11 is a heating flow diagram according to an exemplary embodiment, which includes:

[0140] S1101-S1106.

[0141] S1101, start.

[0142] S1102, determine whether the battery needs to be heated.

[0143] In some embodiments, in the case that the vehicle is started, it is determined according to the operating parameters of the battery whether the battery needs to be heated. If yes, S1103 is performed.

[0144] S1103, obtain the temperature of the energy storage device 102.

[0145] S1104, in the case that the temperature of the energy storage device 102 is in the tenth temperature interval, run the third battery heating mode.

[0146] In the case that the vehicle does not include the engine 103, in combination with Figure 5 , the water path of the third battery heating mode is: the battery 1011→the first three-way valve 104→the energy storage device 102→the second three-way valve 105→the battery 1011. In this way, the energy storage device 102 is used to heat the battery 1011.

[0147] In the case that the vehicle includes the engine 103, in combination with Figure 6 , the water path of the third battery heating mode is: the battery 1011→the first three-way valve 104→the third three-way valve 106→the energy storage device 102→the first three-way pipe 107→the second three-way valve 105→the battery 1011.

[0148] S1105, determine whether the temperature of the heated energy storage device 102 is in the eleventh temperature interval.

[0149] If yes, S1104 is performed. If no, S1106 is performed.

[0150] S1106, the energy storage device 102 stops heating the battery 1011.

[0151] It should be noted that the tenth temperature interval and the eleventh temperature interval are preconfigured temperature intervals. For example, the tenth temperature interval is the temperature of the energy storage device 102 after energy storage. For example, the tenth temperature interval is 41-46°C.

[0152] In one design, after the energy storage device 102 is heated, in the case that the vehicle needs to be heated, the vehicle is heated by the energy storage device 102. As Figure 12 shown, Figure 12 is a heating flow diagram according to an exemplary embodiment, including: S1201-S1206.

[0153] S1201, start.

[0154] S1202, determining whether the heating system 110 needs to be heated.

[0155] In some embodiments, it is determined whether the heating system 110 is started in the case that the vehicle is started. If yes, S1203 is performed. If no, S1202 is continuously performed.

[0156] S1203, obtaining the temperature of the energy storage device 102.

[0157] S1204, running the heating system heating mode in the case that the temperature of the energy storage device 102 is in the twelfth temperature interval.

[0158] In the case that the vehicle does not include the engine 103, the waterway of the heating system heating mode is: the heating system 110→the second three-way pipe 108→the energy storage device 102→the third three-way pipe 109→the heating system 110. In this way, the energy storage device 102 is used to heat the heating system 110. Figure 8

[0159] S1205, determining whether the temperature of the heated energy storage device 102 is in the thirteenth temperature interval.

[0160] If yes, S1204 is performed. If no, S1206 is performed.

[0161] S1206, the energy storage device 102 stops heating the heating system 110.

[0162] It should be noted that the twelfth temperature interval and the thirteenth temperature interval are preconfigured temperature intervals. For example, the twelfth temperature interval is the temperature of the energy storage device 102 after energy storage. For example, the eleventh temperature interval is 41-46°C.

[0163] In one design, in the case that the vehicle is charged, the energy storage device 102 is heated by the heat generated by the battery charging. As shown in FIG. 13, Figure 13 Figure 13 is a schematic diagram of an energy storage process according to an exemplary embodiment, including S1301-S1306.

[0164] S1301, start.

[0165] S1302, in the case that the battery 1011 is in the charging state, determining whether the remaining charging duration is greater than or equal to the first duration.

[0166] ​​In some embodiments, when the battery 1011 is in the charging state, the current ambient temperature is acquired, and when the current ambient temperature is less than or equal to a fourth temperature, it is determined whether the charging remaining duration is greater than or equal to a first duration. If yes, S1303 is executed. If no, S1302 is executed.

[0167] It should be noted that the fourth temperature and the first duration are preconfigured. For example, the fourth temperature can be 16°C, and can also be 13°C, and the embodiments of the present application do not limit this. The first duration can be 20 minutes, and can also be 18 minutes, and the embodiments of the present application do not limit this.

[0168] It can be understood that the energy storage device 102 is used to store heat in the case of a long charging time.

[0169] S1303, the temperature of the energy storage device 102 is acquired.

[0170] S1304, in the case that the temperature of the energy storage device 102 is in a fourteenth temperature interval, the battery heating mode is run.

[0171] In some embodiments, in the case that the temperature of the energy storage device 102 is in the fourteenth temperature interval, the battery heating mode is run.

[0172] In some embodiments, in the case that the temperature of the energy storage device 102 is in the fourteenth temperature interval, the temperature of the battery 1011 is acquired, and in the case that the temperature of the battery 1011 is greater than or equal to a fifth temperature, the battery 1011 heating mode is run.

[0173] In the embodiments of the present application, the battery heating mode is that the coolant flows from the battery 1011 to the energy storage device 102 and then returns to the battery 1011. In this way, the energy storage device 102 recovers the heat generated by the battery 1011 during charging.

[0174] S1305, it is determined whether the temperature of the heated energy storage device 102 is in a fifteenth temperature interval.

[0175] If yes, S1304 is executed. If no, S1306 is executed.

[0176] S1306, the energy storage of the energy storage device 102 is stopped.

[0177] It should be noted that the fifth temperature, the fourteenth temperature interval, and the fifteenth temperature interval are preconfigured temperature intervals. For example, the fourteenth temperature interval is the temperature of the energy storage device 102 after energy storage, and the fourteenth temperature interval is 11°C-25°C, for example. The fifth temperature can be 40°C, and can also be 35°C, and the embodiments of the present application do not limit this.

[0178] In one design, the cold energy is stored by the energy storage device 102 when the vehicle is charging. As shown in Figure 14 Figure 14 A cold energy storage process is shown in FIG. 14 according to an example embodiment, which includes S1401-S1406.

[0179] S1401, start.

[0180] S1402, when the battery is in a charging state, determine whether the remaining charging time is greater than or equal to a second time length.

[0181] In some embodiments, when the battery is in a charging state, the current ambient temperature is obtained, and when the current ambient temperature is greater than or equal to a sixth temperature, it is determined whether the remaining charging time is greater than or equal to the second time length. If yes, S1403 is performed. If no, S1402 is performed.

[0182] In other embodiments, when the battery 1011 is in a charging state, the rotation speed of the compressor is obtained, and when the rotation speed of the compressor is greater than or equal to a preset rotation speed, S1403 is performed. In this way, when the battery 1011 is in a charging mode, the compressor of the thermal management system 10 in which the battery 1011 is located is started, and the cooling liquid is compressed by the compressor. Subsequently, the battery 1011 and other devices are cooled by the compressed cooling liquid. Since the rotation speed of the compressor is positively correlated with the refrigeration capacity, when the rotation speed of the compressor is high, the refrigeration capacity generated by the compressor is also high, so that when the battery 1011 is cooled, the refrigeration capacity can also be used to cool the energy storage device 102.

[0183] It should be noted that the sixth temperature, the preset rotation speed, and the second time length are preconfigured. For example, the sixth temperature can be 25°C, and can also be 27°C, which is not limited in the example embodiments of the present application. The second time length can be 21 minutes, and can also be 22 minutes, which is not limited in the example embodiments of the present application.

[0184] It can be understood that the cold energy is stored by the energy storage device 102 when the charging time is long.

[0185] S1403, obtain the temperature of the energy storage device 102.

[0186] S1404, when the temperature of the energy storage device 102 is in a sixteenth temperature range, run a cooling mode.

[0187] In the example embodiments, the cooling circuit of the cooling mode can be battery 1011→energy storage device 102→battery 1011. In this way, when the battery 1011 is cooled, the cold energy of the battery 1011 is used to store the cold energy of the energy storage device 102. ​

[0188] S1405, determining whether the temperature of the heated energy storage device 102 is in a seventeenth temperature range.

[0189] If yes, S1404 is performed. If no, S1406 is performed.

[0190] S1406, stopping the charging of the energy storage device 102.

[0191] It should be noted that the sixteenth temperature range and the seventeenth temperature range are preconfigured temperature ranges. For example, the sixteenth temperature range is the temperature of the energy storage device 102 after energy storage. For example, the sixteenth temperature range is 31-35°C.

[0192] In some embodiments, after the energy storage device 102 is charged, in the case where it is detected that the battery needs to be cooled, the energy storage device 102 is preferentially started to cool the battery. In this way, the cooling of the battery by the energy storage device 102 reduces the power consumption of the compressor and the battery cooler, thereby reducing energy consumption. The cooling circuit of the energy storage device 102 for cooling the battery is: battery → energy storage device 102 → battery. For example, in combination with Figure 5 , the cooling circuit is: battery 1011 → first three-way valve 104 → energy storage device 102 → second three-way valve 105 → battery 1011.

[0193] On this basis, the present application provides a heat management method applied to the above-mentioned heat management system 10, such as Figure 15 , Figure 15 is a flowchart of a heat management method according to an exemplary embodiment, which comprises S1501-S1503.

[0194] S1501, obtaining the working temperature of the heat management system 10.

[0195] In the embodiments of the present application, the working temperature of the heat management system 10 is the working temperature of the devices in the heat management system 10. For example, the working temperature of the heat management system 10 is the working temperature of the battery 1011, the working temperature of the energy storage medium 1022 of the energy storage device 102, and the working temperature of the electric drive 1012.

[0196] S1502, in the case where the working temperature of the heat management system 10 meets the energy storage condition, recovering the heat of the target device 101 by the energy storage device.

[0197] Wherein, the target device 101 is the battery 1011 and / or the electric drive 1012.

[0198] In some embodiments, the temperature of the energy storage medium 1022 of the energy storage device 102, the temperature of the battery 1011, and the temperature of the electric drive 1012 are acquired, and the heat of the target device 101 is recovered by the energy storage device 102 in a case where the temperature of the energy storage medium 1022 of the energy storage device 102, the temperature of the battery 1011, and the temperature of the electric drive 1012 satisfy an energy storage condition.

[0199] For example, the heat of the battery 1011 is recovered in a case where the temperature of the energy storage medium 1022 of the energy storage device 102 is in a first temperature range. The heat of the electric drive 1012 is recovered in a case where the temperature of the energy storage medium 1022 is in a second temperature range.

[0200] S1503, in a case where the operating temperature of the thermal management system 10 satisfies a heat release condition, heat is released by the energy storage device 102 to the target device 101.

[0201] In some embodiments, the heat of the target device 101 is recovered by the energy storage device 102 in a case where the temperature of the energy storage medium 1022 of the energy storage device 102, the temperature of the battery 1011, and the temperature of the electric drive 1012 satisfy a heat release condition.

[0202] For example, the battery 1011 is heated in a case where the battery 1011 is in a heating state and the temperature of the energy storage medium 1022 of the energy storage device 102 is in a third temperature range.

[0203] In one design, the target device 101 includes the battery 1011 and the electric drive 1012, and the above S1502 includes S1601-S1602.

[0204] S1601, in a case where the temperature of the energy storage medium 1022 of the energy storage device 102 is in a first temperature range, the heat of the battery 1011 is recovered.

[0205] S1602, in a case where the temperature of the energy storage medium 1022 is in a second temperature range, the heat of the electric drive 1012 is recovered.

[0206] In one design, the above S1503 includes S1603.

[0207] S1603, in a case where the battery 1011 is in a heating state and the temperature of the energy storage medium 1022 of the energy storage device 102 is in a third temperature range, the battery 1011 is heated.

[0208] In one design, the thermal management system 10 further includes an engine 103, and the thermal management method further includes S1504.

[0209] S1504, in a case where the temperature of the first coolant and the temperature of the second coolant are greater than or equal to the temperature of the energy storage medium 1022 of the energy storage device 102, recovering heat of the engine 103.

[0210] The first coolant is a coolant of a cooling circuit in which the engine 103 is located, and the second coolant is a coolant of a cooling circuit in which the battery 1011 is located.

[0211] In one design, the thermal management system 10 further includes a heater system 110, and the thermal management method further includes: S1505.

[0212] S1505, in a case where the battery 1011 is in a charging state, a remaining time of charging is greater than or equal to a first time length, a current ambient temperature is less than or equal to a first temperature, and the temperature of the energy storage medium 1022 of the energy storage device 102 is in a fourth temperature range, heating the energy storage device 102 by the heater system 110.

[0213] In one design, the thermal management system 10 further includes a compressor, and the thermal management method further includes: S1506.

[0214] S1506, in a case where the battery 1011 is in a charging state, a remaining time of charging is greater than or equal to a second time length, a current ambient temperature is greater than or equal to a second temperature, and a rotation speed of the compressor is greater than or equal to a preset rotation speed, cooling the energy storage device 102 by using refrigerant compressed by the compressor.

[0215] In one design, the thermal management system 10 further includes a compressor, and the thermal management method further includes: S1507.

[0216] S1507, in a case where the battery 1011 is in a cooling state and the temperature of the energy storage medium 1022 of the energy storage device 102 is in a fifth temperature range, cooling the battery 1011.

[0217] In addition, the embodiments of the present application also provide a vehicle comprising the thermal management system 10 as described above.

Claims

1. A thermal management system, characterized by, The application relates to a heat management system (10) for a target device (101), comprising: a target device (101), wherein the target device (101) comprises a battery (1011) and / or an electric drive (1012); a storage device (102) coupled to the target device (101), configured to recover heat from the target device (101) when the storage device (102) meets a storage condition, and release heat to the target device (101) when the storage device (102) meets a heat release condition; the target device (101) comprises the battery (1011) and the electric drive (1012), and the storage device (102) is specifically configured to recover heat from the battery (1011) when the temperature of a storage medium (1022) of the storage device (102) is in a first temperature range; recover heat from the electric drive (1012) when the temperature of the storage medium (1022) is in a second temperature range; the heat management system further comprises an engine (103), the target device (101) comprises a battery (1011), and the engine (103) is connected with the storage device (102); the storage device (102) is further configured to recover heat from the engine (103) when the temperature of a first cooling liquid and a second cooling liquid is greater than or equal to the temperature of a storage medium (1022) of the storage device (102); the first cooling liquid is a cooling liquid of a cooling loop where the engine (103) is located, and the second cooling liquid is a cooling liquid of a cooling loop where the battery (1011) is located; the target device (101) comprises a battery (1011) and an electric drive (1012), and the heat management system (10) further comprises a first three-way valve (104), a second three-way valve (105), an engine (103), a third three-way valve (106) and a three-way pipe (107); a first port of the first three-way valve (104) is connected with a first interface (1023) of the storage device (102), a second port of the first three-way valve (104) is connected with one end of the battery (1011), a third port of the first three-way valve (104) is connected with one end of the electric drive (1012), a first port of the second three-way valve (105) is connected with a second interface (1024) of the storage device (102), a second port of the second three-way valve (105) is connected with the other end of the battery (1011), and a third port of the second three-way valve (105) is connected with the other end of the electric drive (1012); A first port of the third three-way valve (106) is connected with a first interface (1023) of the energy storage device (102), a second port of the third three-way valve (106) is connected with a first port of the first three-way valve (104), a third port of the third three-way valve (106) is connected with one end of the engine (103), a first port of the three-way pipe (107) is connected with a second interface (1024) of the energy storage device (102), a second port of the three-way pipe (107) is connected with a first port of the second three-way valve (105), and a third port of the three-way pipe (107) is connected with a second interface of the engine (103).

2. The thermal management system of claim 1, wherein, The energy storage medium (1022) of the energy storage device (102) is a phase change material, and a phase change temperature of the phase change material is less than or equal to a first temperature; the first temperature is a highest temperature reached by the battery (1011) in a working state.

3. The thermal management system of claim 1, wherein, The energy storage device (102) is specifically configured to heat the battery (1011) when the battery (1011) is in a heating state and a temperature of the energy storage medium (1022) of the energy storage device (102) is in a third temperature range.

4. The thermal management system of claim 1 or 2, wherein, The thermal management system further comprises a heating system (110) connected with the energy storage device (102). The energy storage device (102) is further configured to supply heat for the heating system (110) when the heating system (110) is started.

5. The thermal management system of claim 4, wherein, The target device (101) comprises a battery (1011) and the heating system (110) is configured to heat the energy storage device (102) when the battery (1011) is in a charging state, a remaining time of charging is greater than or equal to a first time length, a current ambient temperature is less than or equal to a first temperature, and a temperature of the energy storage medium (1022) of the energy storage device (102) is in a fourth temperature range.

6. The thermal management system of claim 1 or 2, wherein, The thermal management system further comprises a compressor, and the target device (101) comprises a battery (1011); the compressor is connected with the battery (1011). The thermal management system (10) is configured to cool the energy storage device (102) by using refrigerant compressed by the compressor when the battery (1011) is in a charging state, a remaining time of charging is greater than or equal to a second time length, a current ambient temperature is greater than or equal to a second temperature, and a rotating speed of the compressor is greater than or equal to a preset rotating speed.

7. The thermal management system of claim 6, wherein, The energy storage device (102) is further configured to cool the battery (1011) when the battery (1011) is in a cooling state and a temperature of the energy storage medium (1022) of the energy storage device (102) is in a fifth temperature range.

8. A thermal management method, characterized by, The method is applied to the thermal management system according to any one of claims 1-7; the method comprises: Obtaining a working temperature of the thermal management system; recovering heat of the target device (101) by the energy storage device (102) when the working temperature of the thermal management system meets an energy storage condition; releasing heat of the target device (101) by the energy storage device (102) when the working temperature of the thermal management system meets a heat release condition.

9. A vehicle characterized by comprising: The vehicle comprises the thermal management system according to any one of claims 1-7.

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