Thermal management system and vehicle

Abstract

The utility model discloses a thermal management system and a vehicle, and relates to the technical field of new energy vehicles, and the thermal management system comprises an air conditioning system, a low-temperature heat dissipation loop and a high-temperature heat dissipation loop. A condenser is arranged in the air conditioning system; the low-temperature heat dissipation loop is used for dissipating heat of the functional accessories, and a first radiator is arranged in the low-temperature heat dissipation loop; the high-temperature heat dissipation loop is used for dissipating heat of the fuel cell, a second radiator is arranged in the high-temperature heat dissipation loop, and the condenser, the first radiator and the second radiator are oppositely arranged; and the high-temperature heat dissipation loop further comprises at least two third radiators and an intercooler, and the at least two third radiators, the second radiator and the intercooler are connected in series. By arranging the intercooler in the high-temperature heat dissipation loop, the number of parts of the low-temperature heat dissipation loop is reduced, the flow resistance of a cooling medium and the heat dissipation burden of the first radiator are reduced, the first radiator with the small size is adopted, the energy consumption of the low-temperature heat dissipation loop is reduced, and the cost is reduced.

Description

Technical Field

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

[0002] Proton exchange membrane fuel cell (PEMFC) vehicles are near-zero-emission vehicles that use hydrogen and oxygen to generate electricity through a fuel cell. The thermal management system must be able to handle the heat generated by the fuel cell stack while ensuring that other key components operate at appropriate temperatures to ensure efficient operation and long-term stability of the entire system. The intercooler cools the air compressed by the compressor, ensuring the appropriate temperature before it enters the fuel cell.

[0003] In related technologies, the intercooler is arranged in a low-temperature heat dissipation circuit and is connected in series or parallel with components such as the motor and the motor controller. The cooling medium in the low-temperature heat dissipation system provides support for the intercooler to cool the fuel cell.

[0004] However, the cooling of the intercooler and other components affects each other, requiring a larger low-temperature radiator, which consumes more energy. Moreover, since the low-temperature heat dissipation circuit requires more cooling components and has greater resistance, the matching low-voltage electronic water pump requires greater power, resulting in high cost and high low-voltage power consumption. Utility Model Content

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a thermal management system that reduces the number of components in the low-temperature heat dissipation circuit by placing an intercooler in the high-temperature heat dissipation circuit, thereby reducing energy consumption and costs.

[0006] The utility model also provides a vehicle.

[0007] According to the thermal management system of the embodiment of the first aspect of the present utility model, it includes: an air-conditioning system, in which a condenser is provided; a low-temperature heat dissipation circuit, which is used to dissipate heat to functional accessories, and a first radiator is provided in the low-temperature heat dissipation circuit; a high-temperature heat dissipation circuit, which is used to dissipate heat to a fuel cell, and a second radiator is provided in the high-temperature heat dissipation circuit, and the condenser, the first radiator and the second radiator are arranged relative to each other; and the high-temperature heat dissipation circuit also includes: at least two third radiators and an intercooler, and at least two of the third radiators, the second radiator and the intercooler are arranged in series with each other.

[0008] According to the thermal management system of the embodiment of the present invention, by arranging the intercooler in the high-temperature heat dissipation circuit, the components of the low-temperature heat dissipation circuit are reduced, the flow resistance of the cooling medium and the heat dissipation burden of the first radiator are reduced, and a smaller-sized first radiator is used to reduce the energy consumption of the low-temperature heat dissipation circuit and reduce costs.

[0009] According to some embodiments of the present invention, at least two of the third radiators are respectively arranged on both sides of the second radiator, and the second radiator, at least two of the third radiators and the intercooler are sequentially arranged in series.

[0010] According to some embodiments of the present invention, the high-temperature heat dissipation circuit further includes: a three-way valve, which is respectively connected to the second radiator, the outlet of the fuel cell, and the inlet of the fuel cell.

[0011] According to some embodiments of the present invention, the high-temperature heat dissipation circuit further includes: a first three-way pipe, which is respectively connected to the second radiator, the third radiator and the inlet of the fuel cell.

[0012] According to some embodiments of the present invention, the high-temperature heat dissipation circuit further includes: a throttle valve, which is arranged between the first three-way pipe and the inlet of the fuel cell.

[0013] According to some embodiments of the present invention, the high-temperature heat dissipation circuit further includes: a heating circuit, one end of which is connected to the outlet of the fuel cell and the other end of which is connected to the inlet of the fuel cell.

[0014] According to some embodiments of the present invention, the thermal management system also includes: a battery heat exchange circuit, which exchanges heat with the air-conditioning system; wherein, the air-conditioning system includes: a compressor, an evaporator and a heat exchanger, the compressor and the condenser are connected in series, the evaporator and the heat exchanger are connected in parallel with each other and arranged in series with the compressor, and the heat exchanger and the battery heat exchange circuit selectively exchange heat.

[0015] According to some embodiments of the present invention, the low-temperature heat dissipation circuit includes: a water pump, an on-board charger, an air compressor controller, a motor controller, a motor, an air compressor and a booster, and the first radiator, the water pump, the on-board charger, the air compressor controller, the motor controller, the motor, the air compressor and the booster are connected in series.

[0016] According to some embodiments of the present invention, the thermal management system further includes: at least two cooling fans, and the at least two cooling fans are spaced apart from each other and arranged opposite to the second radiator.

[0017] A vehicle according to an embodiment of the second aspect of the present utility model includes the thermal management system.

[0018] The beneficial effects of this novel embodiment include: by placing the intercooler in the high-temperature heat dissipation circuit, the number of components in the low-temperature heat dissipation circuit is reduced, reducing the flow resistance of the cooling medium and the heat dissipation burden of the first radiator. By using a smaller first radiator, the energy consumption of the low-temperature heat dissipation circuit is reduced, thereby reducing costs. Furthermore, at least two third radiators assist the second radiator in heat dissipation, alleviating the burden on the second radiator. The third radiators are respectively arranged on either side of the second radiator, leaving a heat dissipation space between the second and third radiators. Heat dissipated by the third radiators does not affect the air temperature at the air inlet of the second radiator, thus preventing a decrease in the gas-liquid temperature difference of the second radiator and ensuring the heat dissipation efficiency of the second radiator.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 Schematic diagram of a thermal management system according to an embodiment of the present invention.

[0022] Reference numerals:

[0023] 100. Thermal management system;

[0024] 10. Air conditioning system; 11. Condenser; 12. Compressor; 13. Evaporator; 14. Heat exchanger;

[0025] 20. Low-temperature heat dissipation circuit; 21. First radiator; 22. Water pump; 23. On-board charger; 24. Air compressor controller; 25. Motor controller; 26. Motor; 27. Air compressor; 28. Booster;

[0026] 30. High-temperature cooling circuit; 31. Second radiator; 32. Third radiator; 33. Intercooler; 34. Three-way valve; 35. Fuel cell; 36. First three-way pipe; 37. Throttle valve; 38. Heating circuit; 39. Cooling fan;

[0027] 40. Battery heat exchange circuit; 41. Battery. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0029] Reference below Figure 1A thermal management system 100 according to an embodiment of the present invention is described. The present invention also provides a vehicle.

[0030] Reference Figure 1 As shown, the thermal management system 100 according to the embodiment of the present invention includes an air conditioning system 10 , a low-temperature heat dissipation circuit 20 and a high-temperature heat dissipation circuit 30 .

[0031] The air conditioning system 10 is provided with a condenser 11 , which exchanges heat with the refrigerant in the air conditioning system 10 to adjust the temperature of the passenger compartment.

[0032] The low-temperature heat dissipation circuit 20 dissipates heat from the functional accessories. A first radiator 21 is located within the circuit. The cooling medium in the circuit 20 flows through the first radiator 21, dissipating heat to the external environment. The functional accessories in the circuit 20 generate relatively little heat. Furthermore, the optimal operating temperature of the functional accessories in the circuit 20 is between 20°C and 60°C, resulting in a relatively low temperature after the cooling medium exchanges heat with the functional accessories. Therefore, the first radiator 21 serves as a low-temperature radiator.

[0033] The high-temperature heat dissipation circuit 30 is used to dissipate heat from the fuel cell 35. A second radiator 31 is disposed within the high-temperature heat dissipation circuit 30. The condenser 11, the first radiator 21, and the second radiator 31 are arranged relative to each other. The cooling medium in the high-temperature heat dissipation circuit 30 removes heat generated by the fuel cell 35 and dissipates it to the external environment through the second radiator 31, thereby cooling the fuel cell 35. The operating temperature of the fuel cell 35 is relatively high, generally between 85°C and 100°C. Therefore, the temperature of the cooling medium after heat exchange with the fuel cell 35 is relatively high, generally around 85°C. Therefore, the second radiator 31 serves as a high-temperature radiator.

[0034] Furthermore, the high-temperature heat dissipation circuit 30 further includes at least two third radiators 32 and an intercooler 33. The at least two third radiators 32, the second radiator 31, and the intercooler 33 are arranged in series. The third radiators 32 are used to assist the second radiator 31 in dissipating heat. In this embodiment, there are two third radiators 32. The cooling medium flows through the fuel cell 35 and the second radiator 31 before reaching the third radiators 32, where it dissipates the heat carried by the cooling medium to the external environment.

[0035] It should be noted that the temperature of the cooling medium used by the intercooler 33 to cool the fuel cell 35 is between the temperatures of the coolant output by the first radiator 21 and the second radiator 31. The temperature of the cooling medium after passing through the second radiator 31 is too high to meet the requirements of the intercooler 33. However, the temperature of the cooling medium after secondary cooling through at least two third radiators 32 is reduced, generally below 65°C, thereby meeting the cooling requirement temperature of the intercooler 33. Therefore, the intercooler 33 can be set in the high-temperature heat dissipation circuit 30.

[0036] Intercooler 33 is a highly efficient intake air cooling system. A water-cooled intercooler provides more stable cooling, especially in high-temperature environments or under high-load operating conditions. Furthermore, the maximum allowable inlet temperature of a water-cooled intercooler generally does not exceed 65°C. Exceeding this maximum allowable inlet temperature significantly reduces cooling efficiency, potentially leading to excessively high intake temperatures.

[0037] In this way, by setting at least two third radiators 32, the cooling temperature requirement of the intercooler 33 can be met. The intercooler 33 is set in the high-temperature heat dissipation circuit 30, the components of the low-temperature heat dissipation circuit 20 are reduced, the structure is simpler, the flow resistance of the cooling medium is reduced, the heat dissipation burden of the first radiator 21 is reduced, and a smaller-sized first radiator 21 can be used to reduce the energy consumption of the low-temperature heat dissipation circuit 20 and reduce costs.

[0038] Therefore, by setting the intercooler 33 in the high-temperature heat dissipation circuit 30, the components of the low-temperature heat dissipation circuit 20 are reduced, the flow resistance of the cooling medium and the heat dissipation burden of the first radiator 21 are reduced, and a smaller-sized first radiator 21 is used to reduce the energy consumption of the low-temperature heat dissipation circuit 20 and reduce costs.

[0039] At least two third radiators 32 are disposed on either side of the second radiator 31. The second radiator 31, the at least two third radiators 32, and the intercooler 33 are sequentially arranged in series. When the second radiator 31 dissipates heat, the cooling medium flows through the second radiator 31 and exchanges heat with the air. The temperature at the air inlet of the second radiator 31 is lower than the temperature at the air outlet. Furthermore, the heat dissipation efficiency of the second radiator 31 is determined by the temperature difference between the cooling medium and the air. If the air inlet temperature is high, the temperature difference between the two becomes smaller, and the heat dissipation capacity of the second radiator 31 decreases.

[0040] The third radiators 32 are respectively arranged on both sides of the second radiator 31, and at least two third radiators 32 are not arranged in the same horizontal row or the same vertical row as the second radiator 31. A heat dissipation space is left between the second radiator 31 and the third radiator 32. The heat dissipated by the third radiator 32 will not affect the wind temperature at the air inlet of the second radiator 31, thereby avoiding a decrease in the gas-liquid temperature difference of the second radiator 31 and ensuring the heat dissipation efficiency of the second radiator 31.

[0041] The high temperature heat dissipation circuit 30 further includes a three-way valve 34, which is connected to the second radiator 31, the outlet of the fuel cell 35 and the inlet of the fuel cell 35. Specifically, the three-way valve 34 is provided with a first valve port, a second valve port and a third valve port. The first valve port is Figure 1 The second valve port is "a" shown in Figure 1 The third valve port is "b" shown in Figure 1 The “c” shown in .

[0042] Among them, the first valve port is connected to the second radiator 31, the second valve port is connected to the inlet of the fuel cell 35, and the third valve port is connected to the outlet of the fuel cell 35. When the first valve port and the third valve port are opened and the second valve port is closed, the cooling medium carries the heat of the fuel cell 35 to the second radiator 31 for heat dissipation. When the second valve port and the third valve port are opened and the first valve port is closed, the cooling medium flows out from the outlet of the fuel cell 35 and returns to the inlet of the fuel cell 35, forming a cycle.

[0043] By setting a three-way valve 34, it is possible to control whether the fuel cell 35 is cooled, that is, when the fuel cell 35 needs to be cooled, the first valve port and the third valve port are opened, and the second valve port is closed; when the fuel cell 35 does not need to be cooled, the second valve port and the third valve port are opened, and the first valve port is closed. The cooling temperature of the fuel cell 35 can also be controlled by opening the first valve port, the second valve port and the third valve port, and allowing part of the cooling medium to enter the second radiator 31 for heat dissipation.

[0044] The high-temperature heat dissipation circuit 30 also includes a first three-way pipe 36, which is respectively connected to the second radiator 31, the third radiator 32, and the inlet of the fuel cell 35. After dissipating heat in the second radiator 31, a portion of the cooling medium can continue to dissipate heat in the third radiator 32, bringing the cooling medium temperature to the required level for the intercooler 33. Furthermore, another portion of the cooling medium returns to the fuel cell 35. When the second and third valve ports of the three-way valve 34 are opened, the cooling medium can mix with the cooling medium flowing out of the outlet of the fuel cell 35 and then flow back, allowing the fuel cell 35 to reach different temperatures after cooling.

[0045] Furthermore, the high-temperature heat dissipation circuit 30 also includes a throttle valve 37 , which is disposed between the first three-way pipe 36 and the inlet of the fuel cell 35 . The throttle valve 37 can control the flow of the cooling medium, thereby adjusting the temperature of the fuel cell 35 .

[0046] The high-temperature heat dissipation circuit 30 also includes a heating circuit 38. One end of the heating circuit 38 is connected to the outlet of the fuel cell 35 and the other end is connected to the inlet of the fuel cell 35. The heating circuit 38 is used to heat the passenger compartment and improve the temperature inside the passenger compartment. A heater core is provided in the heating circuit 38. The high-temperature cooling medium flowing out of the outlet of the fuel cell 35 exchanges heat in the heater core, releasing heat to heat the passenger compartment. The cooled cooling medium then flows back to the inlet of the fuel cell 35 to cool the fuel cell 35.

[0047] The thermal management system 100 also includes a battery heat exchange circuit 40, which exchanges heat with the air-conditioning system 10. The air-conditioning system 10 includes a compressor 12, an evaporator 13 and a heat exchanger 14. The compressor 12 and the condenser 11 are connected in series, the evaporator 13 and the heat exchanger 14 are connected in parallel with each other and in series with the compressor 12, and the heat exchanger 14 and the battery heat exchange circuit 40 selectively exchange heat.

[0048] Specifically, the compressor 12 is used to compress the refrigerant into a high-temperature and high-pressure gas. The high-temperature and high-pressure refrigerant can condense and release heat in the condenser 11, and the evaporator 13 can evaporate the refrigerant and absorb heat, thereby cooling the passenger compartment.

[0049] Heat exchanger 14 connects the battery heat exchange circuit 40 and the air conditioning system 10. In the battery heat exchange circuit 40, the cooling medium exchanges heat with the battery 41, cooling the battery 41. The cooling medium's temperature rises and then exchanges heat with the air conditioning system 10 in the heat exchanger 14. The cooled cooling medium then exchanges heat with the battery 41. In the air conditioning system 10, the high-temperature refrigerant cools down after releasing heat in the condenser 11. Because the evaporator 13 and heat exchanger 14 are connected in parallel and in series with the compressor 12, the low-temperature refrigerant flowing out of the condenser 11 can enter the evaporator 13 to absorb heat, cooling the passenger compartment, or it can flow through the heat exchanger 14 to absorb heat from the battery heat exchange circuit 40.

[0050] The low-temperature heat dissipation circuit 20 includes a water pump 22, an on-board charger 23, an air compressor controller 24, a motor controller 25, a motor 26, an air compressor 27 and a booster 28. The first radiator 21, the water pump 22, the on-board charger 23, the air compressor controller 24, the motor controller 25, the motor 26, the air compressor 27 and the booster 28 are connected in series.

[0051] Specifically, the water pump 22 drives the cooling medium to circulate within the cooling circuit, cooling the various components. Placing the intercooler 33 after the high-temperature heat dissipation circuit 30 simplifies the structure of the low-temperature heat dissipation circuit 20 and reduces the power required by the water pump 22. Installing two water pumps 22 or using a high-power water pump 22 reduces power consumption, thereby reducing system energy consumption.

[0052] The on-board charger 23 (OBC) is responsible for converting alternating current (AC) into direct current (DC) to charge the vehicle's high-voltage power battery. The on-board charger 23 determines the vehicle's charging speed, efficiency, and safety of the charging process.

[0053] The air compressor controller 24 is used to monitor and adjust the operating status of the air compressor 27 to achieve efficient and stable operation of the air system.

[0054] The motor controller / inverter 25 controls the operation of the motor 26 and manages its start, stop, speed, torque, and direction. It converts the DC power from the high-voltage battery into the three-phase AC power required to drive the motor 26 and, during braking or deceleration, feeds the electrical energy generated by the motor 26 back to the battery 41.

[0055] The motor 26 provides power for the vehicle and drives the wheels, and is one of the core components of the electric vehicle.

[0056] The air compressor 27 provides compressed air power for the pneumatic system, mainly transporting gas to the fuel cell 35 stack of the new energy vehicle and providing the necessary oxygen for the stack reaction.

[0057] The booster 28 (DC-DC Booster) boosts low-voltage DC power to high-voltage DC power to meet the high-voltage requirements of certain devices. For example, it provides high voltage to the inverter or motor 26, supports fast charging, increases charging voltage, reduces charging time, and ensures the normal operation of high-voltage auxiliary systems.

[0058] The thermal management system 100 also includes at least two cooling fans 39, spaced apart from each other and positioned opposite the second radiator 31. In this embodiment, two cooling fans 39 are positioned on either side of the second radiator 31. These fans 39 circulate air to remove heat transferred from the cooling medium, improving the cooling efficiency of the second radiator 31 and accelerating heat dissipation. Furthermore, the speed of the cooling fans 39 is adjusted to dynamically adjust according to the temperature of the cooling medium. When the cooling medium temperature is high, the cooling fans 39 operate at high speed. When the temperature is low, the fans 39 can be stopped or operated at low speed, reducing system energy consumption.

[0059] In summary, the cooling medium in the low-temperature heat dissipation circuit 20 flows as follows: water pump 22—on-board charger 23—air compressor controller 24—motor controller 25—motor 26—air compressor 27—boost 28—first radiator 21—water pump 22. The low-temperature cooling medium exchanges heat with the on-board charger 23, air compressor controller 24, motor controller 25, motor 26, air compressor 27 and boost 28 respectively. After the temperature of the cooling medium rises, it exchanges heat with the air in the first radiator 21. After the temperature of the cooling medium drops, it exchanges heat with the components in the low-temperature heat dissipation circuit 20.

[0060] When the high-temperature heat dissipation circuit 30 cools the fuel cell 35, the cooling medium flows as follows: the first and third valve ports of the three-way valve 34 are open, the second valve port is closed, and the cooling medium flows from the fuel cell 35 to the three-way valve 34 to the second radiator 31 to the third radiator 32 to the intercooler 33 to the fuel cell 35.

[0061] The second and third valve ports of the three-way valve 34 are open, the first valve port is closed, and the fuel cell 35—three-way valve 34—fuel cell 35;

[0062] The first valve port, the second valve port and the third valve port of the three-way valve 34 are all open, fuel cell 35 - three-way valve 34 - second radiator 31 - third radiator 32 - intercooler 33 - fuel cell 35; fuel cell 35 - three-way valve 34 - fuel cell 35.

[0063] When the high-temperature heat dissipation circuit 30 heats the passenger compartment through the heat of the fuel cell 35 , the cooling medium flows in the following direction: fuel cell 35 —heating circuit 38 —fuel cell 35 .

[0064] When the air conditioning system 10 is cooling, the refrigerant flows as follows: compressor 12 - condenser 11 - evaporator 13 - compressor 12 .

[0065] When the air conditioning system 10 cooperates with the battery heat exchange circuit 40 to cool the battery 41, the refrigerant flows as follows: compressor 12 - condenser 11 - heat exchanger 14 - compressor 12;

[0066] The cooling medium flows from the battery 41 to the heat exchanger 14 and then to the battery 41 .

[0067] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0068] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0069] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A thermal management system, characterized in that: include: An air conditioning system, wherein a condenser is provided in the air conditioning system; A low-temperature heat dissipation circuit, the low-temperature heat dissipation circuit is used to dissipate heat for functional accessories, and a first radiator is provided in the low-temperature heat dissipation circuit; a high-temperature heat dissipation circuit, the high-temperature heat dissipation circuit being used to dissipate heat for the fuel cell, a second radiator being provided in the high-temperature heat dissipation circuit, the condenser, the first radiator, and the second radiator being arranged relative to each other; Furthermore, the high-temperature heat dissipation circuit further includes: at least two third radiators and an intercooler, and the at least two third radiators, the second radiator and the intercooler are connected in series.

2. The thermal management system according to claim 1, characterized in that At least two of the third radiators are respectively arranged on both sides of the second radiator, and the second radiator, the at least two third radiators and the intercooler are sequentially arranged in series.

3. The thermal management system according to claim 1, characterized in that The high-temperature heat dissipation circuit further includes a three-way valve, which is respectively connected to the second radiator, the outlet of the fuel cell, and the inlet of the fuel cell.

4. The thermal management system according to claim 1, wherein: The high-temperature heat dissipation circuit further includes a first three-way pipe, which is connected to the second radiator, the third radiator and the inlet of the fuel cell respectively.

5. The thermal management system according to claim 4, characterized in that: The high-temperature heat dissipation circuit further includes a throttle valve, which is arranged between the first three-way pipe and the inlet of the fuel cell.

6. The thermal management system according to claim 1, wherein: The high-temperature heat dissipation circuit further includes a heating circuit, one end of which is connected to the outlet of the fuel cell and the other end of which is connected to the inlet of the fuel cell.

7. The thermal management system according to claim 1, wherein: Also includes: A battery heat exchange circuit, wherein the battery heat exchange circuit exchanges heat with the air conditioning system; wherein, The air conditioning system includes: a compressor, an evaporator and a heat exchanger. The compressor and the condenser are connected in series, the evaporator and the heat exchanger are connected in parallel and arranged in series with the compressor, and the heat exchanger and the battery heat exchange circuit selectively exchange heat.

8. The thermal management system according to claim 1, wherein: The low-temperature heat dissipation circuit includes: a water pump, an on-board charger, an air compressor controller, a motor controller, a motor, an air compressor and a booster. The first radiator, the water pump, the on-board charger, the air compressor controller, the motor controller, the motor, the air compressor and the booster are connected in series.

9. The thermal management system according to claim 1, wherein: Also includes: At least two cooling fans are provided, and the at least two cooling fans are spaced apart from each other and are arranged opposite to the second radiator.

10. A vehicle, characterized in that: include: The thermal management system according to any one of claims 1 to 9.

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