Thermal management system based on vehicle and vehicle

Abstract

The embodiment of the utility model provides a thermal management system based on a vehicle and the vehicle, and relates to the technical field of automobiles. The thermal management system based on the vehicle comprises a driving cooling loop, a warm air loop and a first heat exchanger. The driving cooling loop is used for absorbing heat of the driving system; the first heat exchanger is connected with the driving cooling loop and the warm air loop and used for transferring heat of the driving cooling loop to the warm air loop. The air conditioning box assembly is connected with the warm air loop and communicated with the passenger compartment and used for outputting heat of the warm air loop to the passenger compartment when the passenger compartment needs to be heated. According to the thermal management system based on the vehicle, the heat energy waste of the vehicle can be reduced, and the utilization rate of energy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, and in particular to a vehicle-based thermal management system and the vehicle. Background Art

[0002] As a new energy vehicle, hydrogen fuel cell vehicles have the advantages of energy saving and environmental protection, and are increasingly becoming a hot topic of research in the automotive field.

[0003] In the existing technology, the heat generated during the operation of the hydrogen fuel vehicle drive system and the fuel cell system is generally dissipated directly, and the energy utilization rate is not high. Utility Model Content

[0004] The embodiment of the present utility model provides a vehicle-based thermal management system, which can reduce the thermal energy waste of the vehicle and improve the energy utilization rate.

[0005] In a first aspect, an embodiment of the present invention provides a vehicle-based thermal management system, the vehicle including a drive system, an air conditioning box assembly, and a passenger compartment; the thermal management system includes a drive cooling circuit, a warm air circuit, and a first heat exchanger;

[0006] The drive cooling circuit is used to absorb heat from the drive system;

[0007] The first heat exchanger is connected to the drive cooling circuit and the warm air circuit respectively, and is used to transfer heat from the drive cooling circuit to the warm air circuit;

[0008] The air conditioning box assembly is connected to the warm air circuit and communicates with the passenger compartment, and is used to output the heat of the warm air circuit to the passenger compartment when the passenger compartment needs to be heated.

[0009] Optionally, the vehicle further includes a battery stack and battery stack accessories; the thermal management system further includes a battery stack cooling circuit and a second heat exchanger;

[0010] The stack cooling circuit is used to absorb heat from the stack and stack accessories;

[0011] The second heat exchanger is connected to the stack cooling circuit and the warm air circuit respectively, and is used to transfer the heat of the stack cooling circuit to the warm air circuit.

[0012] Optionally, the vehicle further comprises a battery; the thermal management system further comprises a third heat exchanger and a battery thermal management loop;

[0013] The third heat exchanger is connected to the heating circuit and the battery thermal management circuit respectively, and is used to transfer heat from the heating circuit to the battery thermal management circuit;

[0014] The battery thermal management circuit is used to heat the battery when the battery needs to be heated.

[0015] Optionally, the thermal management system further includes a refrigeration device, a refrigerant circuit, a fourth heat exchanger, and a battery thermal management circuit;

[0016] Refrigeration equipment is used to generate cold;

[0017] The refrigerant circuit is connected to the refrigeration device, and the air conditioning box assembly is connected to the refrigerant circuit and communicates with the passenger compartment, and is used to output the cooling capacity in the refrigerant circuit to the passenger compartment when the passenger compartment needs to be cooled;

[0018] The fourth heat exchanger is connected to the refrigerant circuit and the battery thermal management circuit respectively, and is used to transfer heat from the battery thermal management circuit to the refrigerant circuit when the battery needs to be cooled.

[0019] Optionally, the vehicle further includes a battery; the thermal management system further includes a waste heat recovery device and a battery thermal management circuit;

[0020] The waste heat recovery device is connected to the drive cooling circuit and the battery thermal management circuit respectively, and is used to transfer the heat of the drive cooling circuit to the battery thermal management circuit when the battery needs to be heated.

[0021] Optionally, the thermal management system further comprises a heating device;

[0022] The heating device is connected to the warm air circuit and is used for heating the warm air circuit.

[0023] Optionally, the thermal management system further includes a first radiator, which is used to dissipate heat for the stack cooling circuit.

[0024] Optionally, the thermal management system further includes a second radiator, which is connected to the drive cooling circuit and the refrigeration device respectively, and is used to dissipate heat for the drive cooling circuit and the refrigeration device.

[0025] Optionally, the thermal management system further includes a first expansion water tank and a second expansion water tank;

[0026] The first expansion water tank is connected to the drive cooling circuit and is used to accommodate excess coolant after the coolant in the drive cooling circuit expands due to heat; and a first liquid level sensor is provided in the first expansion water tank, and the first liquid level sensor is used to detect the liquid level in the first expansion water tank;

[0027] The second expansion water tank is connected to the warm air circuit and is used to accommodate excess coolant after the coolant in the warm air circuit expands due to heat; and a second liquid level sensor device is provided in the second expansion water tank, which is used to monitor the liquid level in the second expansion water tank.

[0028] In a second aspect, an embodiment of the present invention provides a vehicle, including the vehicle-based thermal management system provided by any embodiment of the present invention.

[0029] The vehicle-based thermal management system provided by the embodiment of the present utility model recycles the waste heat generated when the driving system is working and uses it for air conditioning and heating, thereby reducing the vehicle's heat energy waste, improving energy utilization, and making the heat energy allocation between various parts of the vehicle more reasonable. At the same time, it can reduce the energy consumption when the vehicle's air conditioning and heating are turned on, and improve the vehicle's mileage.

[0030] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 This is a vehicle-based thermal management system provided by an embodiment of the utility model;

[0033] Figure 2 This is another vehicle-based thermal management system provided by an embodiment of the present utility model;

[0034] Figure 3 This is another vehicle-based thermal management system provided by an embodiment of the present utility model;

[0035] Figure 4 This is another vehicle-based thermal management system provided by an embodiment of the present utility model;

[0036] Figure 5 This is another vehicle-based thermal management system provided by an embodiment of the present utility model;

[0037] Figure 6 This is another vehicle-based thermal management system provided by an embodiment of the present utility model;

[0038] Figure 7 This is another vehicle-based thermal management system provided by an embodiment of the present utility model;

[0039] Figure 8 This is another vehicle-based thermal management system provided by an embodiment of the present utility model;

[0040] Figure 9 This is another vehicle-based thermal management system provided by an embodiment of the present utility model. DETAILED DESCRIPTION

[0041] In order to help those skilled in the art better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0042] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0043] The embodiment of the utility model provides a vehicle-based thermal management system. Figure 1 This is a vehicle-based thermal management system provided by the embodiment of the utility model, referring to Figure 1 The vehicle includes a drive system 100, an air conditioning box assembly 200 and a passenger compartment ( Figure 1 The thermal management system includes a drive cooling circuit L1, a warm air circuit L2, and a first heat exchanger 10. The drive cooling circuit L1 is used to absorb heat from the drive system 100. The first heat exchanger 10 is connected to the drive cooling circuit L1 and the warm air circuit L2, respectively, and is used to transfer heat from the drive cooling circuit L1 to the warm air circuit L2. The air conditioning box assembly 200 is connected to the warm air circuit L2 and communicates with the passenger compartment, and is used to output heat from the warm air circuit L2 to the passenger compartment when the passenger compartment needs to be heated.

[0044] refer to Figure 1The heat transfer medium in the drive cooling circuit L1 and the warm air circuit L2 can be water or other heat-conducting substances. The present embodiment does not specifically limit the type of heat transfer medium. When the drive system 100 is in operation, a large amount of heat is generated, which is absorbed by the heat transfer medium in the drive cooling circuit L1. When the vehicle's air conditioning and heating system is turned on, the heat-carrying heat transfer medium in the drive cooling circuit L1 exchanges heat with the heat transfer medium in the warm air circuit L2 in the first heat exchanger 10. The higher-temperature heat transfer medium in the drive cooling circuit L1 transfers heat to the lower-temperature heat transfer medium in the warm air circuit L2. This heat is then transferred to the air conditioning unit assembly 200 via the heat transfer medium in the warm air circuit L2. The air conditioning unit assembly 200 includes a blower. Within the air conditioning unit assembly 200, this heat is dissipated from the heat transfer medium into the air and directed into the passenger compartment by the blower. This process recovers the waste heat generated by the drive system 100 and uses it for air conditioning and heating.

[0045] The vehicle-based thermal management system provided by the embodiment of the present utility model recycles the waste heat generated when the driving system is working and uses it for air conditioning and heating, thereby reducing the vehicle's heat energy waste, improving energy utilization, and making the heat energy allocation between various parts of the vehicle more reasonable. At the same time, it can reduce the energy consumption when the vehicle's air conditioning and heating are turned on, and improve the vehicle's mileage.

[0046] Figure 2 This is another vehicle-based thermal management system provided by the embodiment of the utility model. Figure 2 The vehicle also includes a fuel cell stack 300 and a fuel cell stack accessory 400; the thermal management system also includes a fuel cell stack cooling circuit L3 and a second heat exchanger 20; the fuel cell stack cooling circuit L3 is used to absorb heat from the fuel cell stack 300 and the fuel cell stack accessory 400; the second heat exchanger 20 is respectively connected to the fuel cell stack cooling circuit L3 and the warm air circuit L2, and is used to transfer heat from the fuel cell stack cooling circuit L3 to the warm air circuit L2.

[0047] refer to Figure 2 , the heat generated by the battery stack 300 and the battery stack accessories 400 during operation is absorbed by the heat-conducting medium in the battery stack cooling circuit L3, and this part of the heat is transferred to the warm air circuit L2 through the second heat exchanger 20. When the vehicle's air conditioning heater is turned on, this part of the heat can be used to heat the air in the air conditioning box assembly 200 and output to the passenger compartment in the form of air conditioning warm air to reduce heat energy waste and improve energy utilization. In addition, the above process can work in conjunction with the heating function of the vehicle's own air conditioning. Under the premise of ensuring the stable output of air conditioning warm air, the waste heat generated by the drive system 100, the battery stack 300 and the battery stack accessories 400 can be utilized as much as possible.

[0048] Figure 3 This is another vehicle-based thermal management system provided by the embodiment of the utility model. Figure 3The vehicle also includes a battery 500; the thermal management system also includes a third heat exchanger 30 and a battery thermal management circuit L4; the third heat exchanger 30 is connected to the warm air circuit L2 and the battery thermal management circuit L4, respectively, and is used to transfer heat from the warm air circuit L2 to the battery thermal management circuit L4; the battery thermal management circuit L4 is used to heat the battery 500 when the battery 500 needs to be heated.

[0049] refer to Figure 3 The warm air circuit L2 absorbs the heat from the drive cooling circuit L1 and the stack cooling circuit L3. When the temperature of the battery 500 is too low and needs to be heated, the heat of the warm air circuit L2 can be transferred to the battery thermal management circuit L4 through the third heat exchanger 30. The battery thermal management circuit L4 transfers the heat to the battery 500 to increase the temperature of the battery 500, thereby making full use of the waste heat generated by the drive system 100, the stack 300 and the stack accessories 400.

[0050] Figure 4 This is another vehicle-based thermal management system provided by the embodiment of the utility model. Figure 4 The thermal management system further includes a refrigeration device 600, a refrigerant circuit L5, a fourth heat exchanger 40, and a battery thermal management circuit L4; the refrigeration device 600 is used to generate cold; the refrigerant circuit L5 is connected to the refrigeration device 600, and the air conditioning box assembly 200 is connected to the refrigerant circuit L5 and is connected to the passenger compartment ( Figure 4 The fourth heat exchanger 40 is connected to the refrigerant circuit L5 and the battery thermal management circuit L4, respectively, and is used to transfer the heat of the battery thermal management circuit L4 to the refrigerant circuit L5 when the battery 500 needs to be cooled.

[0051] refer to Figure 4 , the refrigerant circuit L5 includes a refrigerant, the refrigeration device 600 stores the generated cold energy in the refrigerant, and the refrigerant can release the cold energy after reaching the air conditioning box assembly 200 and the fourth heat exchanger 40. For example, the refrigeration device 600 includes an air conditioning compressor ( Figure 4 Not shown) and condenser ( Figure 4 The air conditioning compressor and condenser can convert the refrigerant into a low-temperature liquid. The low-temperature liquid refrigerant can absorb the heat of the battery thermal management circuit L4 by evaporating and absorbing heat in the fourth heat exchanger 40. The air conditioning box assembly 200 includes an evaporator ( Figure 4(not shown), the low-temperature liquid refrigerant evaporates in the evaporator, absorbing heat. This cool energy is then transferred to the air in the air conditioning unit assembly 200. Finally, the air conditioning unit assembly 200 outputs the cool energy to the passenger compartment, achieving a cooling effect for the passenger compartment. In the thermal management system provided by this embodiment of the utility model, the passenger compartment and battery 500 are cooled using the same refrigeration unit 600, which improves component utilization, streamlines vehicle components, and reduces manufacturing costs.

[0052] Optionally, the third heat exchanger 30 can be reused as the fourth heat exchanger 40 to improve the component utilization rate of the thermal management system.

[0053] Figure 5 This is another vehicle-based thermal management system provided by the embodiment of the utility model. Figure 5 The vehicle also includes a battery 500; the thermal management system also includes a waste heat recovery device 700 and a battery thermal management circuit L4; the waste heat recovery device 700 is connected to the drive cooling circuit L1 and the battery thermal management circuit L4 respectively, and is used to transfer the heat of the drive cooling circuit L1 to the battery thermal management circuit L4 when the battery 500 needs to be heated.

[0054] The waste heat recovery device 700 directly transfers heat from the drive cooling circuit L1 to the battery thermal management circuit L4 without the involvement of the warm air circuit L2. When the battery 500 needs to be heated, the waste heat recovery device 700 directly transfers the heat to the battery thermal management circuit L4, avoiding the loss of heat from the drive cooling circuit L1 through the warm air circuit L2. This improves thermal energy utilization and further reduces energy waste.

[0055] Figure 6 This is another vehicle-based thermal management system provided by the embodiment of the utility model. Figure 6 The thermal management system further includes a heating device 800 ; the heating device 800 is connected to the warm air circuit L2 and is used to heat the warm air circuit L2 .

[0056] refer to Figure 6 Optionally, the heating device 800 includes a water heater (Water Positive Temperature Coefficient, WPTC). The heating device 800 can simultaneously heat the warm air circuit L2, which can then transfer heat to the battery thermal management circuit L4, thereby enabling the heating device 800 to simultaneously heat the warm air circuit L2 and the battery thermal management circuit L4. The heating device 800 can independently provide heat to the warm air circuit L2. It can also provide heat to ensure continuous warm air output for the vehicle when the driver cooling circuit L1 and the stack cooling circuit L3 are unable to provide sufficient heat to the warm air circuit L2.

[0057] Figure 7This is another vehicle-based thermal management system provided by the embodiment of the utility model. Figure 7 The thermal management system also includes a first radiator 900, which is used to dissipate heat for the stack cooling circuit L3.

[0058] refer to Figure 7 , the stack cooling circuit L3 is connected to the stack 300 and the stack accessory 400 respectively. The stack cooling circuit L3 absorbs the heat generated by the stack 300 and the stack accessory 400 at the same time. The first radiator 900 can directly dissipate heat to the stack cooling circuit L3, so that the stack 300 and the stack accessory 400 share the same radiator, which simplifies the internal components of the vehicle and saves manufacturing costs. Optionally, the first radiator 900 includes a wind shield, an electronic fan and an insect net. Optionally, the first radiator 900 also includes an air pump, a power distributor, a mid-axle motor, a mid-axle electronic control, a rear-axle motor and a rear-axle electronic control. After the air pump is connected in parallel with the power distributor, it is connected in series with the mid-axle electronic control and the mid-axle motor respectively, and the rear-axle motor is connected in series with the rear-axle electronic control. The above two branches are connected in parallel.

[0059] Figure 8 This is another vehicle-based thermal management system provided by the embodiment of the utility model. Figure 8 The thermal management system also includes a second radiator 910, which is connected to the drive cooling circuit L1 and the refrigeration device 600, respectively, for dissipating heat from the drive cooling circuit L1 and the refrigeration device 600. Sharing the same radiator for the drive cooling circuit L1 and the refrigeration device 600 helps streamline vehicle internal components and reduce manufacturing costs.

[0060] Figure 9 This is another vehicle-based thermal management system provided by the embodiment of the utility model. Figure 9 The thermal management system further includes a first expansion water tank 51 and a second expansion water tank 52; the first expansion water tank 51 is connected to the drive cooling circuit L1 and is used to accommodate excess coolant after the coolant in the drive cooling circuit L1 expands due to heat; and a first liquid level sensor ( Figure 9 The first liquid level sensor is used to detect the liquid level in the first expansion water tank 51; the second expansion water tank 52 is connected to the warm air circuit L2 and is used to accommodate excess coolant after the coolant in the warm air circuit L2 expands due to heat; and the second expansion water tank 52 is provided with a second liquid level sensor device ( Figure 9 The second liquid level sensing device is used to monitor the liquid level in the second expansion water tank 52.

[0061] refer to Figure 9The first expansion water tank 51 can accommodate excess coolant in the drive cooling circuit L1 after the coolant expands due to heat, balance the pressure in the drive cooling circuit L1, and supply coolant to the drive cooling circuit L1 when the coolant in the drive cooling circuit L1 is too low. A first liquid level sensor can detect the coolant level in the first expansion water tank 51 and, if the coolant is too low, can issue a coolant-low warning to the vehicle's electronic control system. Optionally, the first expansion water tank 51 can also be connected to the stack cooling circuit L3 to balance the pressure there. The second expansion water tank 52 is connected to the heater circuit L2 to balance the pressure there. A second liquid level sensor can detect the coolant level in the second expansion water tank 52 and, if the coolant is too low, can issue a coolant-low warning to the vehicle's electronic control system. Optionally, the thermal management system also includes a third expansion water tank 53 and a fourth expansion water tank 54. The third expansion water tank 53 is connected to the stack cooling circuit L3 to balance the pressure there. The fourth expansion water tank 54 is connected to the battery thermal management circuit L4 and is used to balance the pressure of the battery thermal management circuit L4. Optionally, the thermal management system also includes a first water pump 61, a second water pump 62, a third water pump 63, and a fourth water pump 64. The first water pump 61 is connected to the drive cooling circuit L1, the second water pump 62 is connected to the warm air circuit L2, the third water pump 63 is connected to the stack cooling circuit L3, and the fourth water pump 64 is connected to the battery thermal management circuit L4. The first water pump 61, the second water pump 62, the third water pump 63, and the fourth water pump 64 are used to directional move liquid or gas in the drive circuit. The number of water pumps in the thermal management system can be set according to actual needs, and the embodiment of the utility model does not limit the number of water pumps. Optionally, the thermal management system also includes a first electronic expansion valve 71 and a second electronic expansion valve 72. The first electronic expansion valve 71 and the second electronic expansion valve 72 are connected to the warm air circuit L2 and are used to control the flow rate of the refrigerant in the warm air circuit L2. Optionally, the thermal management system also includes a first three-way valve 81, a second three-way valve 82, a third three-way valve 83, a fourth three-way valve 84, a fifth three-way valve 85, a sixth three-way valve 86 and a seventh three-way valve 87. The first three-way valve 81, the second three-way valve 82, the third three-way valve 83, the fourth three-way valve 84, the fifth three-way valve 85, the sixth three-way valve 86 and the seventh three-way valve 87 are used to control the flow direction of the liquid or gas in the circuit to prevent the liquid or gas in the circuit from flowing to the wrong branch.

[0062] refer to Figure 9 Optionally, the thermal management system also includes a waste heat recovery circuit L6, which is respectively connected to the waste heat recovery device 700, the battery thermal management circuit L4 and the drive cooling circuit L1, and is used to balance the pressure of the drive cooling circuit L1 and the battery thermal management circuit L4 when the waste heat recovery device 700 transfers heat from the drive cooling circuit L1 to the battery thermal management circuit L4.

[0063] Based on the same concept, an embodiment of the present invention provides a vehicle, including the vehicle-based thermal management system provided by any embodiment of the present invention.

[0064] The vehicle provided by the embodiment of the present invention includes any one of the vehicle-based thermal management systems provided by the above embodiments, and has the same or corresponding technical effects as the vehicle-based thermal management system, which will not be described in detail here.

[0065] The above specific embodiments do not limit the scope of protection of this utility model. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model shall be included within the scope of protection of this utility model.

Claims

1. A vehicle-based thermal management system, characterized in that: The vehicle includes a drive system, an air conditioning box assembly and a passenger compartment; the thermal management system includes a drive cooling circuit, a warm air circuit and a first heat exchanger; The drive cooling circuit is used to absorb heat from the drive system; The first heat exchanger is connected to the drive cooling circuit and the warm air circuit respectively, and is used to transfer heat from the drive cooling circuit to the warm air circuit; The air conditioning box assembly is connected to the warm air circuit and communicates with the passenger compartment, and is used to output the heat of the warm air circuit to the passenger compartment when the passenger compartment needs to be heated.

2. The thermal management system according to claim 1, characterized in that The vehicle further includes a fuel cell stack and fuel cell stack accessories; the thermal management system further includes a fuel cell stack cooling circuit and a second heat exchanger; The stack cooling circuit is used to absorb heat from the stack and the stack accessories; The second heat exchanger is connected to the stack cooling circuit and the warm air circuit respectively, and is used to transfer heat from the stack cooling circuit to the warm air circuit.

3. The thermal management system according to claim 1, wherein: The vehicle further includes a battery; the thermal management system further includes a third heat exchanger and a battery thermal management circuit; The third heat exchanger is connected to the warm air circuit and the battery thermal management circuit respectively, and is used to transfer heat from the warm air circuit to the battery thermal management circuit; The battery thermal management circuit is used to heat the battery when the battery needs to be heated.

4. The thermal management system according to claim 1, wherein: The thermal management system further includes a refrigeration device, a refrigerant circuit, a fourth heat exchanger and a battery thermal management circuit; The refrigeration device is used to generate cold energy; The refrigerant circuit is connected to the refrigeration device, and the air conditioning box assembly is connected to the refrigerant circuit and communicates with the passenger compartment, and is used to output the cooling capacity in the refrigerant circuit to the passenger compartment when the passenger compartment needs to be cooled; The fourth heat exchanger is connected to the refrigerant circuit and the battery thermal management circuit respectively, and is used to transfer heat from the battery thermal management circuit to the refrigerant circuit when the battery needs to be cooled.

5. The thermal management system according to claim 1, wherein: The vehicle further comprises a battery; the thermal management system further comprises a waste heat recovery device and a battery thermal management circuit; The waste heat recovery device is connected to the drive cooling circuit and the battery thermal management circuit respectively, and is used to transfer the heat of the drive cooling circuit to the battery thermal management circuit when the battery needs to be heated.

6. The thermal management system according to claim 1, wherein: The thermal management system further comprises a heating device; The heating device is connected to the warm air circuit and is used for heating the warm air circuit.

7. The thermal management system according to claim 2, wherein: The thermal management system further includes a first radiator, which is used to dissipate heat for the stack cooling circuit.

8. The thermal management system according to claim 4, characterized in that: The thermal management system further includes a second radiator, which is connected to the drive cooling circuit and the refrigeration device respectively and is used to dissipate heat for the drive cooling circuit and the refrigeration device.

9. The thermal management system according to claim 1, wherein: The thermal management system further includes a first expansion water tank and a second expansion water tank; The first expansion water tank is connected to the drive cooling circuit and is used to accommodate excess coolant after the coolant in the drive cooling circuit expands due to heat; and a first liquid level sensor is provided in the first expansion water tank, and the first liquid level sensor is used to detect the liquid level in the first expansion water tank; The second expansion water tank is connected to the warm air circuit and is used to accommodate excess coolant after the coolant in the warm air circuit expands due to heat; and a second liquid level sensor device is provided in the second expansion water tank, and the second liquid level sensor device is used to monitor the liquid level in the second expansion water tank.

10. A vehicle, characterized in that: A vehicle-based thermal management system comprising the method according to any one of claims 1 to 9.

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