Thermal management system and vehicle

Abstract

The present disclosure provides a kind of thermal management system and car.Therein, a kind of thermal management system includes air conditioning circuit and function circuit;Air conditioning circuit is internally provided with compressor, first heat exchanger, first expansion valve and second heat exchanger;Function circuit has first switch valve, second switch valve, battery heat exchanger, first drive pump and second drive pump air conditioning circuit is provided with refrigerant;Function circuit is provided with coolant;The technical scheme of the present disclosure can solve the technical problems of low resource utilization efficiency in the prior art thermal management system.

Description

Technical Field

[0001] This disclosure relates to the field of thermal management technology, and more particularly to a thermal management system and an automobile. Background Technology

[0002] With the development of the automotive industry and the advancement of technology, thermal management has become a crucial factor affecting vehicle performance and reliability. Thermal management systems effectively control heat within the vehicle to ensure that critical components operate within their optimal temperature range. This is essential for improving energy efficiency, extending component lifespan, and ensuring passenger comfort.

[0003] Currently, most cars use traditional thermal management systems, where the cooling system is primarily responsible for engine cooling, while the air conditioning system is responsible for regulating the cabin temperature. These two systems typically operate independently, each managed by its own controller, allowing them to address specific thermal management needs.

[0004] While this separate design can fulfill basic thermal management functions, it suffers from low resource utilization efficiency. Due to the lack of inter-system synergy, it may not achieve optimal energy utilization and temperature control. Summary of the Invention

[0005] The purpose of this disclosure is to provide a thermal management system and an automobile to solve the problem of low resource utilization efficiency in existing thermal management systems.

[0006] To address the aforementioned technical problems, the present disclosure provides the following technical solutions:

[0007] The first aspect of this disclosure provides a thermal management system, including:

[0008] An air conditioning circuit is internally equipped with a compressor, a first heat exchanger, a first expansion valve, and a second heat exchanger. The outlet end of the compressor is connected to the first inlet end of the first heat exchanger. The first outlet end of the first heat exchanger, which is connected to the first inlet end, is connected to the inlet end of the first expansion valve. The outlet end of the first expansion valve is connected to the first inlet end of the second heat exchanger. The first outlet end of the second heat exchanger, which is connected to the first inlet end, is connected to the inlet end of the compressor. The air conditioning circuit is equipped with refrigerant.

[0009] The functional circuit includes a first switching valve, a second switching valve, a battery heat exchanger, a first drive pump, and a second drive pump. The outlet end of the battery heat exchanger is connected to the first connection end of the first switching valve, the second connection end of the first switching valve is connected to the second inlet end of the second heat exchanger, the second outlet end of the second heat exchanger connected to the second inlet end is connected to the first connection end of the second switching valve, the second connection end of the second switching valve is connected to the inlet end of the first drive pump, the outlet end of the first drive pump is connected to the inlet end of the battery heat exchanger, the third connection end of the first switching valve is connected to the second inlet end of the first heat exchanger, the second outlet end of the first heat exchanger connected to the second inlet end is connected to the fourth connection end of the second switching valve, the third connection end of the second switching valve is connected to the inlet end of the second drive pump, and the outlet end of the second drive pump is connected to the fourth connection end of the first switching valve. The functional circuit is equipped with coolant.

[0010] The switching between the first switching valve and the second switching valve enables the air conditioning circuit to heat or cool the battery heat exchanger.

[0011] Furthermore, the functional loop also includes:

[0012] The motor heat exchanger has its outlet end connected to the fourth connection end of the first switching valve, and its inlet end connected to the outlet end of the second drive pump.

[0013] Furthermore, the functional loop also includes:

[0014] The third drive pump has its inlet end connected to the second outlet end of the first heat exchanger and is connected in parallel with the fourth connection end of the second switching valve.

[0015] The inlet of the cabin heater is connected to the outlet of the third drive pump.

[0016] The one-way valve has its inlet end connected to the outlet end of the cabin heater and its outlet end connected to the second inlet end of the first heat exchanger.

[0017] Furthermore, the fifth connection end of the first switching valve is connected to the fourth connection end of the second switching valve.

[0018] Furthermore, the functional circuit also includes a positive temperature coefficient heater, which is located at the second outlet end of the second heat exchanger and connected in series with the second heat exchanger.

[0019] Furthermore, the functional circuit also includes: a low-temperature radiator, the inlet end of which is connected to the fifth connection end of the second switching valve, and the outlet end of which is connected to the inlet end of the second drive pump.

[0020] Furthermore, the air conditioning circuit also includes:

[0021] The second expansion valve is connected to the first outlet end of the first heat exchanger and is connected in parallel with the first expansion valve.

[0022] The in-cabin refrigeration unit has its inlet end connected to the outlet end of the second expansion valve, and its outlet end connected to the inlet end of the compressor.

[0023] Furthermore, the air conditioning circuit also includes:

[0024] A liquid storage filter device is connected in series at the first outlet end of the first heat exchanger to separate gaseous refrigerant.

[0025] Furthermore, the thermal management system also includes:

[0026] The detection component is installed in the air conditioning circuit and the functional circuit to detect the temperature and / or pressure in the air conditioning circuit and the functional circuit.

[0027] A second aspect of this disclosure provides an automobile that includes the thermal management system provided in the first aspect of this disclosure.

[0028] The second aspect of this disclosure provides a vehicle that can directly use the thermal management system provided in the first aspect above. For the specific implementation structure, please refer to the relevant content described in the first aspect above, which will not be repeated here.

[0029] The first aspect of this disclosure provides a thermal management system, comprising: a functional circuit and an air conditioning circuit; wherein refrigerant circulates in the air conditioning circuit, a compressor compresses the refrigerant into a high-temperature, high-pressure refrigerant, which flows into a first heat exchanger, raising the temperature of the first heat exchanger, and then flows into a first expansion valve, where the first expansion valve throttles the refrigerant, converting it into a low-temperature, low-pressure refrigerant, which flows through a second heat exchanger, lowering the temperature of the second heat exchanger, and finally the refrigerant flows back from the second heat exchanger to the compressor for recirculation. Since the first and second heat exchangers are also connected to the functional circuit, the flow direction of the coolant in the functional circuit can be adjusted by regulating the connection between the first and second switching valves, so that the first heat exchanger heats the battery heat exchanger or the second heat exchanger cools the battery heat exchanger, thereby heating or cooling the battery. This configuration fully utilizes the air conditioning circuit to supply heat to the functional circuits in the vehicle body, improving resource utilization and effectively increasing the synergy between circuits, solving the technical problem that existing circuits cannot achieve optimal energy utilization and temperature control. Attached Figure Description

[0030] The above and other objects, features, and advantages of exemplary embodiments of the present disclosure will become readily apparent upon reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of the present disclosure are illustrated by way of example and not limitation, with the same or corresponding reference numerals denoteing the same or corresponding parts, wherein:

[0031] Figure 1 A schematic diagram of the thermal management system is shown.

[0032] Figure 2 A schematic diagram of Mode 1 is shown;

[0033] Figure 3 A schematic diagram of Mode 2 is shown;

[0034] Figure 4 A schematic diagram of Mode 3 is shown;

[0035] Figure 5 A schematic diagram of Mode 4 is shown;

[0036] Figure 6 A schematic diagram of Mode 5 is shown;

[0037] Figure 7 A schematic diagram of Mode Six is ​​shown;

[0038] Figure 8 A schematic diagram of Mode 7 is shown;

[0039] Figure 9 A schematic diagram of pattern eight is shown.

[0040] Figure 10 A schematic diagram of Mode Nine is shown.

[0041] Figure 11 A schematic diagram of Mode 10 is shown.

[0042] Figure 12 A schematic diagram of Mode 11 is shown.

[0043] Explanation of icon numbers:

[0044] 1. Compressor; 2. First heat exchanger; 3. First expansion valve; 4. Second heat exchanger; 5. First switching valve; 6. Second switching valve; 7. Battery heat exchanger; 8. First drive pump; 9. Second drive pump; 10. Motor heat exchanger; 11. Third drive pump; 12. In-cabin heater; 13. Check valve; 14. Positive temperature coefficient heater; 15. Low temperature radiator; 16. Second expansion valve; 17. In-cabin refrigerator; 18. Liquid storage filter; 19. Detection components; 1901. Temperature sensor; 1902. Temperature and pressure sensor; 20. High and low pressure pipes; 21. Fan; 22. Active air intake grille;

[0045] A1, First connection end of the first switching valve; A2, Second connection end of the first switching valve; A3, Third connection end of the first switching valve; A4, Fourth connection end of the first switching valve; A5, Fifth connection end of the first switching valve;

[0046] B1, the first connection end of the second switching valve; B2, the second connection end of the second switching valve; B3, the third connection end of the second switching valve; B4, the fourth connection end of the second switching valve; B5, the fifth connection end of the second switching valve. Detailed Implementation

[0047] The embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings and examples. The detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of this disclosure by way of example, but should not be used to limit the scope of this disclosure. This disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0048] These embodiments are provided to make the disclosure thorough and complete, and to fully express the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, material composition, numerical expressions, and values ​​set forth in these embodiments should be interpreted as exemplary only and not as limiting.

[0049] It should be noted that, in the description of this disclosure, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationship, are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0050] Furthermore, the terms "first," "second," and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. "Vertical" is not strictly vertical, but within the permissible margin of error. "Parallel" is not strictly parallel, but within the permissible margin of error. Terms such as "including" or "contains" mean that the element preceding the word encompasses the element listed after the word, and do not exclude the possibility of encompassing other elements as well.

[0051] It should also be noted that, in the description of this disclosure, unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this disclosure depending on the specific circumstances. When a particular device is described as being located between a first device and a second device, an intermediary device may or may not be present between the particular device and the first or second device.

[0052] Example 1

[0053] like Figure 1As shown, a first aspect of this disclosure provides a thermal management system, which includes: an air conditioning circuit and a functional circuit; the air conditioning circuit is provided with a compressor 1, a first heat exchanger 2, a first expansion valve 3, and a second heat exchanger 4, the outlet end of the compressor 1 is connected to the first inlet end of the first heat exchanger 2, the first outlet end of the first heat exchanger 2 connected to the first inlet end is connected to the inlet end of the first expansion valve 3, the outlet end of the first expansion valve 3 is connected to the first inlet end of the second heat exchanger 4, and the first outlet end of the second heat exchanger 4 connected to the first inlet end is connected to the inlet end of the compressor 1, and the air conditioning circuit is provided with refrigerant; the functional circuit includes a first switching valve 5, a second switching valve 6, a battery heat exchanger 7, a first drive pump 8, and a second drive pump 9, the outlet end of the battery heat exchanger 7 is connected to the first connection end A1 of the first switching valve 5, and the second connection end A1 of the first switching valve 5 is connected to the first connection end A2 of the first switching valve 5. 2 is connected to the second inlet end of the second heat exchanger 4. The second outlet end of the second heat exchanger 4, which is connected to the second inlet end, is connected to the first connection end B1 of the second switching valve 6. The second connection end B2 of the second switching valve 6 is connected to the inlet end of the first drive pump 8. The outlet end of the first drive pump 8 is connected to the inlet end of the battery heat exchanger 7. The third connection end A3 of the first switching valve 5 is connected to the second inlet end of the first heat exchanger 2. The second outlet end of the first heat exchanger 2, which is connected to the second inlet end, is connected to the fourth connection end B4 of the second switching valve 6. The third connection end B3 of the second switching valve 6 is connected to the inlet end of the second drive pump 9. The outlet end of the second drive pump 9 is connected to the fourth connection end A4 of the first switching valve 5. The functional circuit is equipped with coolant. The switching of the first switching valve 5 and the second switching valve 6 enables the air conditioning circuit to heat or cool the battery heat exchanger 7.

[0054] Specifically, the compressor 1 and the first expansion valve 3 can both be standard air conditioning system circuit compressor 1 and expansion valve, without specific limitations. In this embodiment, the expansion valve can be a battery electronic expansion valve. The first heat exchanger 2 and the second heat exchanger 4 can be the same heat exchanger, or a condenser and a standard heat exchanger can be used respectively according to the setup requirements, without specific limitations. In this embodiment, the first heat exchanger 2 can be a water-cooled condenser. In this embodiment, both the first heat exchanger 2 and the second heat exchanger 4 are provided with a part connected to the air conditioning circuit and a part connected to the functional circuit. The first heat exchanger 2 and the second heat exchanger 4 are both connected to the air conditioning circuit through a connected first inlet end and a connected first outlet end. The first heat exchanger 2 and the second heat exchanger 4 are also connected to the functional circuit through a connected second inlet end and a connected second outlet end, so that the air conditioning circuit and the functional circuit can exchange heat. The connection method between the compressor 1, the first heat exchanger 2, the first expansion valve 3 and the second heat exchanger 4 in the air conditioning circuit is through conventional automotive thermal management pipelines. The refrigerant can be difluoromethane, hydrofluorocarbons, etc., without specific limitations.

[0055] During operation, the refrigerant is compressed by the compressor 1 and converted into a high-temperature and high-pressure state. The portion of the refrigerant connected to the first heat exchanger 2 in the air conditioning circuit is heated by the first heat exchanger 2. Then, the first expansion valve 3 converts the refrigerant into a low-temperature and low-pressure state, and the portion of the refrigerant connected to the second heat exchanger 4 in the air conditioning circuit is cooled by the second heat exchanger 4. Finally, the refrigerant flows back to the compressor 1 and is compressed again to complete the cycle.

[0056] The first switching valve 5 and the second switching valve 6 can be conventional four-way valves. In this embodiment, a five-way valve with switching function can be used. The battery heat exchanger 7 can be a plate heat exchanger or a shell structure enclosing the battery. The battery heat exchanger 7 is in contact with the battery to facilitate heat exchange between the battery and the battery heat exchanger 7. The first drive pump 8 and the second drive pump 9 are also conventional drive pumps, without specific limitations. The coolant circulating in the functional loop can be ethylene glycol-based coolant, a mixture of ethylene glycol and propylene glycol, etc. Similarly, the first switching valve 5, the second switching valve 6, the battery heat exchanger 7, the first drive pump 8, and the second drive pump 9 are connected via standard automotive thermal management pipelines, without specific limitations.

[0057] During operation, the first connection end A1 and the third connection end A3 of the first switching valve 5 can be switched to be connected, as can the second connection end A2 and the fourth connection end A4 of the first switching valve 5. Similarly, the first connection end B1 and the third connection end B3 of the second switching valve 6, and the second connection end B2 and the fourth connection end B4, can be connected. During operation, the functional circuit forms two coolant circulation circuits. In one of the coolant circulation circuits, the coolant circulation path is as follows: driven by the first drive pump 8, it passes through the battery heat exchanger 7, the first connection end A1 and the third connection end A3 of the first switching valve 5, the part of the first heat exchanger 2 connected to the functional circuit, the fourth connection end B4 and the second connection end B2 of the second switching valve 6, and finally returns to the first drive pump 8 to achieve circulation. When the coolant flows through the part of the first heat exchanger 2 connected to the functional circuit, it exchanges heat with the part of the first heat exchanger 2 connected to the air conditioning circuit, thus heating the coolant. When the heated coolant flows through the battery heat exchanger 7, it can heat the battery heat exchanger 7, thereby heating the battery. In another loop, the second drive pump 9 drives the coolant to flow through the fourth connection end A4 and the second connection end A2 of the first switching valve 5, the part of the second heat exchanger 4 connected to the functional loop, the first connection end B1 and the third connection end B3 of the second switching valve 6, and then returns to the second drive pump 9 for circulation.

[0058] The first connection terminal A1 of the first switching valve 5 can be connected to the second connection terminal A2, and the third connection terminal A3 and the fourth connection terminal A4 of the first switching valve 5 can be connected. Similarly, the first connection terminal B1 of the second switching valve 6 can be connected to the second connection terminal B2, and the third connection terminal B3 of the second switching valve 6 can be connected to the fourth connection terminal B4. This functional circuit also constitutes two coolant circulation circuits. In one coolant circulation circuit, the first drive pump 8 drives the coolant to flow sequentially through the battery heat exchanger 7, the first connection terminal A1 and the second connection terminal A2 of the first switching valve 5, the part of the second heat exchanger 4 connected to the functional circuit, and the first connection terminal B1 and the second connection terminal B2 of the second switching valve 6, and then flows back to the first drive pump 8 for circulation. When the coolant flows through the part of the second heat exchanger 4 connected to the functional circuit, it exchanges heat with the part of the second heat exchanger 4 connected to the air conditioning circuit, thereby cooling the coolant. The cooled coolant flows through the battery heat exchanger 7, which in turn cools the battery. In another loop, the second drive pump 9 drives the coolant to flow through the fourth connection A4 and the third connection A3 of the first switching valve 5, the part of the first heat exchanger 2 connected to the functional loop, the fourth connection B4 and the third connection B3 of the second switching valve 6, and then returns to the second drive pump 9 for circulation.

[0059] The first aspect of this disclosure provides a thermal management system, which includes a functional circuit and an air conditioning circuit. Refrigerant circulates in the air conditioning circuit. A compressor 1 compresses the refrigerant into a high-temperature, high-pressure refrigerant, which flows into a first heat exchanger 2, raising the temperature of the first heat exchanger 2. The refrigerant then flows into a first expansion valve 3, which throttles the refrigerant, converting it into a low-temperature, low-pressure refrigerant. When the refrigerant flows through a second heat exchanger 4, it cools the second heat exchanger 4. Finally, the refrigerant flows back from the second heat exchanger 4 to the compressor 1 for recirculation. Since the first heat exchanger 2 and the second heat exchanger 4 are also connected to the functional circuit, the flow direction of the coolant in the functional circuit can be adjusted by regulating the connection between the first switching valve 5 and the second switching valve 6. This allows the first heat exchanger 2 to heat the battery heat exchanger 7 or the second heat exchanger 4 to cool the battery heat exchanger 7, thereby heating or cooling the battery. This setup makes full use of the air conditioning circuit to provide heat to the functional circuits in the vehicle body, improving resource utilization and effectively increasing the synergy between circuits. It solves the technical problem that the circuits in the prior art cannot achieve optimal energy utilization and temperature control.

[0060] like Figure 1-11 As shown, in some embodiments, the functional circuit further includes: a motor heat exchanger 10, the outlet end of which is connected to the fourth connection end A4 of the first switching valve 5, and the inlet end of which is connected to the outlet end of the second drive pump 9.

[0061] Specifically, the motor heat exchanger 10 can be a plate heat exchanger or a motor housing-shaped heat exchanger. The motor heat exchanger 10 is in contact with the motor for heat exchange. During operation, the fourth connection end A1 and the second connection end A2 of the first switching valve 5 can be connected, and the first connection end B1 and the third connection end B3 of the second switching valve 6 can be connected. During the circulation process, the second drive pump 9 drives the coolant to pass sequentially through the motor heat exchanger 10, the fourth connection end A4 and the second connection end A2 of the first switching valve 5, the first heat exchanger 2, the first connection end A1 and the third connection end A3 of the second switching valve 6, and then back to the second drive pump 9 to achieve circulation. This causes the first heat exchanger 2, which is connected to the functional circuit, to lower the temperature of the coolant, thereby lowering the temperature of the motor heat exchanger 10 to dissipate heat from the motor.

[0062] like Figure 1-11 As shown, in some embodiments, the functional circuit further includes: a third drive pump 11, an in-cabin heater 12, and a one-way valve 13; the inlet end of the third drive pump 11 is connected to the second outlet end of the first heat exchanger 2, and is connected in parallel with the fourth connection end B4 of the second switching valve 6; the inlet end of the in-cabin heater 12 is connected to the outlet end of the third drive pump 11; the inlet end of the one-way valve 13 is connected to the outlet end of the in-cabin heater 12, and the outlet end of the one-way valve 13 is connected to the second inlet end of the first heat exchanger 2.

[0063] Specifically, the cabin heater 12 can be a conventional heat exchanger, without specific limitations. The third drive pump 11 and the one-way valve 13 can both be selected from the drive pump and one-way valve 13 in the standard thermal management system. The parallel connection of the third drive pump 11 to the fourth connection end B4 of the second switching valve 6 can be achieved through a three-way valve, that is, the second outlet end of the first heat exchanger 2 is connected to the first connection end of the three-way valve, and the second and third connection ends of the three-way valve are respectively connected to the inlet end of the third drive pump 11 and the fourth connection end B4 of the second switching valve 6. During operation, the third drive pump 11 drives the coolant through the cabin heater 12, the one-way valve 13, the first heat exchanger 2 and the part connected to the functional circuit in sequence, and then returns to the third drive pump 11 for circulation. The coolant is heated after flowing through the first heat exchanger 2, and then circulated through the third drive pump 11 to the cabin heater 12, so that the cabin heater 12 is heated. At the same time, a fan 21 can be set in the thermal management system. The air blown out by the fan 21 is heated after passing through the cabin heater 12, and then enters the cabin to provide heat for the personnel inside the cabin.

[0064] like Figure 1-11 As shown, in some embodiments, the fifth connection end of the first switching valve 5 is connected to the fourth connection end of the second switching valve 6.

[0065] Specifically, a three-way valve can be installed to connect the fifth connection end of the first switching valve 5 to the fourth connection end of the second switching valve 6. The first connection end of the three-way valve is connected to the second outlet of the first heat exchanger 2 and the inlet end of the second drive pump 9, and the remaining two connection ends of the three-way valve are connected to the fifth connection end A5 of the first switching valve 5 and the fourth connection end B4 of the second switching valve 6, respectively.

[0066] In some embodiments, the thermal management system further includes a positive temperature coefficient heater 14, which is disposed at the second outlet end of the first heat exchanger 2 and connected in series with the second heat exchanger 4.

[0067] Specifically, the positive temperature coefficient heater 14 can be a conventional PCT heater, without specific limitations. The positive temperature coefficient heater 14 can be installed in the pipeline connected to the second outlet end of the first heat exchanger 2, serving as an auxiliary heat source to assist the first heat exchanger 2 in heating the coolant in the functional circuit. Generally, when the operating environment is below -15℃, this environment is not suitable for the operation of the first heat exchanger 2. In this case, the positive temperature coefficient heater 14 can be turned on first to raise the coolant temperature to around -10℃ before starting the refrigerant circulation in the air conditioning circuit.

[0068] like Figure 1-11 As shown, in some embodiments, the thermal management system further includes: a low-temperature radiator 15, the inlet end of which is connected to the fifth connection end of the second switching valve 6, and the outlet end of which is connected to the inlet end of the second drive pump 9.

[0069] Specifically, the low-temperature radiator 15 directly exchanges heat with the external environment. The low-temperature radiator 15 can be a conventional low-temperature radiator 15 in the thermal management system, without specific limitations. A three-way valve can be installed in the functional loop for connection: the first connection end of the three-way valve is connected to the inlet end of the second drive pump 9, the second connection end is connected to the third connection end B3 of the second switching valve 6, and the third connection end is connected to the outlet end of the low-temperature radiator 15. With this configuration, during operation, the third connection end A3 and the fourth connection end A4 of the first switching valve 5 are connected, and the fifth connection end B5 and the fourth connection end B4 of the second switching valve 6 are connected. This allows the low-temperature radiator 15 to be cooled by the external environment, thereby cooling the motor. Simultaneously, active air intake grilles 22 and fans 21 can be installed on both sides of the low-temperature radiator 15 to assist in heat exchange between the low-temperature radiator 15 and the environment.

[0070] like Figure 1-11As shown, in some embodiments, the air conditioning circuit further includes: a second expansion valve 16 and an in-cabin cooler 17; the second expansion valve 16 is connected to the first outlet end of the first heat exchanger 2 and is connected in parallel with the first expansion valve 3; the inlet end of the in-cabin cooler 17 is connected to the outlet end of the second expansion valve 16, and the outlet end of the in-cabin cooler 17 is connected to the inlet end of the compressor 1.

[0071] Specifically, the second expansion valve can be an electronic valve of the air conditioning unit in a standard air conditioning circuit, and the cabin cooler 17 can be an evaporator core, without specific limitations. Two three-way valves can also be installed in the air conditioning circuit. The first connection end of the first three-way valve is connected to the first outlet end of the first heat exchanger 2, and the second and third connection ends of the first heat exchanger 2 are respectively connected to the inlet end of the first expansion valve 3 and the inlet end of the second expansion valve 16. The first connection end of the second three-way valve is connected to the inlet end of the compressor 1, and the second and third connection ends of the second three-way valve are respectively connected to the outlet ends of the second heat exchanger 4 and the cabin cooler 17.

[0072] During operation, compressor 1 compresses the refrigerant to a high-temperature, high-pressure state, and then flows to the first expansion valve 3 and the second expansion valve 16 respectively, converting it into a low-temperature, low-pressure refrigerant. This low-temperature, low-pressure refrigerant flows to the second heat exchanger 4 and the cabin refrigerator 17 to cool them down, and then flows back to compressor 1 to complete the cycle. During this process, a fan 21 can be installed on one side of the cabin refrigerator 17. The air blown by the fan 21 is cooled at the cabin refrigerator 17, forming cooling air to lower the cabin temperature. Simultaneously, high and low pressure air conditioning pipes 20 can be installed on the pipeline at the inlet of the second expansion valve 16 and the pipeline at the outlet of the cabin refrigerator 17 to allow heat exchange between the high-temperature, high-pressure refrigerant flowing into the inlet of the second expansion valve 16 and the low-temperature, low-pressure refrigerant flowing out of the cabin refrigerator 17.

[0073] like Figure 1-11 As shown, in some embodiments, the air conditioning circuit further includes a liquid storage filter 18, which is connected in series at the first outlet end of the first heat exchanger 2 for separating gaseous substances.

[0074] Specifically, the liquid storage filter 18 is installed at the first outlet end of the first heat exchanger 2 and connected in series with the pipeline at that location. When the refrigerant flows out from the first liquid outlet of the first heat exchanger 2 and passes through the liquid storage filter 18, the liquid storage filter 18 separates and stores the gaseous substances in the refrigerant, allowing the liquid refrigerant to flow to the first expansion valve 3 and the second expansion valve 16, thereby increasing the throttling efficiency of the first expansion valve 3 and the second expansion valve 16. The liquid storage filter 18 can be a combination of a liquid storage tank and a gas-liquid separator, or it can be a combination of a storage tank and a drying device to separate moisture from the refrigerant; its specific application is not detailed here.

[0075] like Figure 1-11 As shown, in some embodiments, the thermal management system further includes a detection component 19, which is disposed in the air conditioning circuit and the functional circuit for detecting the temperature and / or pressure in the air conditioning circuit and the functional circuit.

[0076] Specifically, the detection component 19 can be either a temperature sensor 1901 or a temperature and pressure sensor 1902, without specific limitations. In this embodiment, temperature sensors 1901 can be installed in the pipes on both sides of the positive temperature coefficient heater 14, at the inlet end of the motor heat exchanger 10, at the inlet end of the low-temperature radiator 15, and in the pipes on both sides of the battery heat exchanger 7. Temperature and pressure sensors 1902 are installed at the outlet end of the compressor 1, the outlet end of the second heat exchanger 4, and the positive temperature coefficient heater 14 to monitor the temperature and pressure information in the thermal management system.

[0077] The connections between the various components in the thermal management system can be made using pipelines, as is common in conventional thermal management systems. Specific connection methods, such as sealing and the components required for connection, will not be elaborated upon here.

[0078] The thermal management system provided in Embodiment 1 of this disclosure has the following operating modes:

[0079] Mode 1: Battery cooling and motor cooling modes:

[0080] like Figure 2 As shown, the first connection end A1 and the second connection end A2 of the first switching valve 5 are connected, and the third connection end A3 and the fourth connection end A4 of the first switching valve 5 are connected; the fifth connection end B5 and the fourth connection end B4 of the second switching valve 6 are connected, and the second connection end B2 of the second switching valve 6 is connected to the first connection end B1. At the same time, the first expansion valve 3 is open, the second expansion valve 16 is closed, the first drive pump 8 and the second drive pump 9 are both open, and the third drive pump 11 is closed, thus forming the first sub-circuit, the second sub-circuit, and the third sub-circuit.

[0081] In the first sub-loop, the compressor 1 compresses the refrigerant to a high temperature and high pressure state and flows to the first heat exchanger 2. Then it flows to the liquid storage filter device 18 and enters the first expansion valve 3 to be converted into a low temperature and low pressure state of the refrigerant. It then enters the second heat exchanger 4 and flows back to the compressor 1 for circulation.

[0082] In the second sub-circuit, the second drive pump 9 drives the coolant to flow into the motor heat exchanger 10, and then through the fourth connection terminal A4 and the third connection terminal A3 of the first switching valve 5 to the first heat exchanger 2. It then passes through the positive temperature coefficient heater 14, which is not turned on at this time. The coolant then flows to the fourth connection terminal B4 and the fifth connection terminal B5 of the second switching valve 6 to the low-temperature radiator 15. The coolant exchanges heat with the outdoor environment through the fans 21 and the active air intake grille 22 on both sides of the low-temperature radiator 15, thereby lowering the temperature of the coolant. The coolant then flows back to the second drive pump 9, which drives the cooled coolant to flow into the motor heat exchanger 10 to cool the motor.

[0083] In this embodiment, the battery cooling and motor cooling modes can be activated when the motor temperature reaches 65°C by the detection component 19. A cooling request is sent to the second drive pump 9 to work at a 50% duty cycle. Generally, the high-temperature and high-pressure refrigerant produced after the refrigerant is compressed by the compressor 1 is around 65°C. Therefore, the air conditioning circuit hardly heats the coolant in the second sub-circuit through the first heat exchanger 2.

[0084] In the third sub-loop, the first drive pump 8 pumps the coolant to the battery heat exchanger 7, and then through the first connection terminal A1 and the second connection terminal A2 of the first switching valve 5 to the second heat exchanger 4. The second heat exchanger 4 allows the first sub-loop and the third sub-loop to exchange heat, thereby reducing the temperature of the coolant in the third sub-loop. Then, through the first connection terminal B1 and the second connection terminal B2 of the second switching valve 6, the coolant flows back to the first drive pump 8 for circulation. The first drive pump 8 drives the cooled coolant to flow to the battery heat exchanger 7 to cool the battery.

[0085] Mode 2: Motor cooling and cabin refrigeration mode;

[0086] like Figure 3 As shown, the first connection end A1 and the second connection end A2 of the first switching valve 5 are connected, and the third connection end A3 and the fourth connection end A4 of the first switching valve 5 are connected; the fifth connection end B5 and the fourth connection end B4 of the second switching valve 6 are connected, and the second connection end B2 of the second switching valve 6 is connected to the first connection end B1. The first expansion valve 3 is closed, and both second expansion valves 16 are open. The first drive pump 8 and the third drive pump 11 are closed, and the second drive pump 9 is open, thus forming the second sub-circuit and the fourth sub-circuit.

[0087] In the fourth sub-loop, the high-temperature and high-pressure refrigerant compressed by the compressor 1 flows through the first heat exchanger 2, then to the liquid storage filter device 18, and then into the second expansion valve 16. Subsequently, it flows through the air conditioning high and low pressure pipes 20 to the second expansion valve 16 and is converted into low-temperature and low-pressure refrigerant. After passing through the cabin cooler 17, it flows back to the compressor 1 through the air conditioning high and low pressure pipes 20. The air blown out by the fan 21 is cooled at the cabin cooler 17 and finally blown into the crew cabin to cool the crew cabin.

[0088] Mode 3: Cabin temperature control, motor heat dissipation, and dehumidification mode;

[0089] like Figure 4 As shown, the first connection end A1 and the second connection end A2 of the first switching valve 5 are connected, and the third connection end A3 and the fourth connection end A4 of the first switching valve 5 are connected; the fifth connection end B5 and the fourth connection end B4 of the second switching valve 6 are connected, and the second connection end B2 of the second switching valve 6 is connected to the first connection end B1. The first expansion valve 3 is closed, and the second expansion valve 16 is open. The first drive pump 8 is closed, and the second drive pump 9 and the third drive pump 11 are open, thus forming the second sub-circuit, the fourth sub-circuit, and the fifth sub-circuit.

[0090] In the fifth sub-loop, the coolant is driven by the third drive pump 11 to the cabin heater 12, then flows through the one-way valve 13, the part of the first heat exchanger 2 connected to the functional loop, and the positive temperature coefficient heater 14, before returning to the third drive pump 11 to complete the circulation. When the coolant flows through the first heat exchanger 2, it can exchange heat with the refrigerant in the air conditioning loop at high temperature and high pressure, raising its temperature. When the heated coolant flows through the cabin heater 12, it can raise the temperature of the cabin heater 12. The air blown out by the fan 21 is cooled at the cabin heater 12 and finally blown into the crew compartment to heat the crew compartment.

[0091] For the second sub-loop, the first connection end B1 of the second switching valve 6 can be slightly opened to allow the first connection end B1 to have a smaller flow rate. The fourth connection end B4 is simultaneously connected to the third connection end B3 and the fifth connection end B5, which can reduce the flow resistance of the fifth connection end B5 and thus increase the performance of the thermal management system.

[0092] The second sub-circuit cools the motor, while the fifth or fourth sub-circuit controls the power of the fan 21 to heat or cool the cabin as needed. Alternatively, the fan 21 can be controlled to alternately act on the cabin heater 12 and the cabin cooler 17 to achieve dehumidification.

[0093] Mode 4: Cabin cooling, motor heat dissipation, and battery heat dissipation mode;

[0094] like Figure 5As shown, the first connection end A1 and the second connection end A2 of the first switching valve 5 are connected, and the third connection end A3 and the fourth connection end A4 of the first switching valve 5 are connected; the fifth connection end B5 and the fourth connection end B4 of the second switching valve 6 are connected, and the second connection end B2 of the second switching valve 6 is connected to the first connection end B1. The first expansion valve 3 and the second expansion valve 16 are open. The third drive pump 11 is closed, and the first drive pump 8 and the second drive pump 9 are open, thus forming a first sub-circuit, a second sub-circuit, a third sub-circuit, and a fourth sub-circuit.

[0095] The first sub-circuit works in conjunction with the third sub-circuit to cool the battery, the fourth sub-circuit cools the interior of the compartment, and the second sub-circuit cools the motor.

[0096] Mode 5 includes cabin temperature control, motor cooling, battery cooling, and dehumidification modes;

[0097] like Figure 6 As shown, the first connection end A1 and the second connection end A2 of the first switching valve 5 are connected, and the third connection end A3 and the fourth connection end A4 of the first switching valve 5 are connected; the fifth connection end B5 and the fourth connection end B4 of the second switching valve 6 are connected, and the second connection end B2 of the second switching valve 6 is connected to the first connection end B1. The first expansion valve 3 and the second expansion valve 16 are both open, and the first drive pump 8, the second drive pump 9 and the third drive pump 11 are all open, forming a first sub-circuit, a second sub-circuit, a third sub-circuit, a fourth sub-circuit and a fifth sub-circuit;

[0098] The first sub-circuit works in conjunction with the third sub-circuit to cool the battery, while the second sub-circuit cools the motor. The fourth and fifth sub-circuit work together to dehumidify the air. At the same time, the fan 21 can be controlled to either cool the cabin with the fourth sub-circuit or heat the cabin with the fifth sub-circuit.

[0099] Mode 6: Cabin heating, motor cooling, and battery heating modes

[0100] like Figure 7 As shown, the first connection end A1 and the third connection end A3 of the first switching valve 5 are connected, and the second connection end A2 and the fourth connection end A4 of the first switching valve 5 are connected; the first connection end B1 of the second switching valve 6 is connected to the third connection end B3 or the fifth connection end B5, and the second connection end B2 of the second switching valve 6 is connected to the fourth connection end B4. The first expansion valve 3 is open, the second expansion valve 16 is closed, and the first drive pump 8, the second drive pump 9, and the third drive pump 11 are all open to form the first sub-circuit, the fifth sub-circuit, the sixth sub-circuit, and the seventh sub-circuit or the fifth sub-circuit.

[0101] For the sixth sub-loop, the first drive pump 8 drives the coolant sequentially to the battery heat exchanger 7, the first connection terminal A1 and the third connection terminal A3 of the first switching valve 5, and the part of the first heat exchanger 2 connected to the functional loop. The positive temperature coefficient heater 14 then returns to the first drive pump 8 for circulation. When the coolant passes through the first heat exchanger 2, it exchanges heat with the high-temperature and high-pressure refrigerant in the air conditioning loop, and then is reheated by the positive temperature coefficient heater 14. The heated coolant is further heated as it flows through the battery heat exchanger 7, thereby heating the battery.

[0102] For the seventh sub-loop, the second drive pump 9 drives the coolant to flow sequentially to the motor heat exchanger 10, the fourth connection end A4 and the second connection end A2 of the first switching valve 5, the part of the second heat exchanger 4 connected to the functional loop, the first connection end B1 and the third connection end B3 of the second switching valve 6, and then returns to the second drive pump 9 for circulation. When the coolant enters the second heat exchanger 4, it exchanges heat with the low-temperature and low-pressure refrigerant in the air conditioning loop. When the coolant with a lower temperature flows through the motor heat exchanger 10, its temperature is lowered, thereby dissipating heat for the motor.

[0103] When the motor temperature is high and needs to be cooled down urgently, the seventh sub-circuit can be used in conjunction with the first sub-circuit to cool the motor. When the motor temperature is high but does not require urgent cooling, the second sub-circuit can be used to cool it down.

[0104] The motor is cooled by the first sub-circuit in conjunction with the seventh sub-circuit, while the interior of the cabin is heated by the fifth sub-circuit and the battery is heated by the sixth sub-circuit.

[0105] Mode 7: Motor cooling and cabin heating mode;

[0106] like Figure 8 As shown, the first connection end A1 and the third connection end A3 of the first switching valve 5 are connected, and the second connection end A2 and the fourth connection end A4 of the first switching valve 5 are connected; the first connection end B1 of the second switching valve 6 is connected to the third connection end B3 or the fifth connection end B5, and the second connection end B2 of the second switching valve 6 is connected to the fourth connection end B4. The first expansion valve 3 is open, the second expansion valve 16 is closed, the first drive pump 8 is closed, and the second drive pump 9 and the third drive pump 11 are open. This forms a first sub-circuit, a fifth sub-circuit, and a seventh sub-circuit or a second sub-circuit; the first sub-circuit, in conjunction with the seventh sub-circuit, cools the motor, and the fifth sub-circuit, in conjunction with the first sub-circuit, heats the cabin interior.

[0107] Mode 8: Cabin temperature control, motor heat dissipation, and dehumidification mode;

[0108] like Figure 9As shown, the first connection end A1 and the third connection end A3 of the first switching valve 5 are connected, and the second connection end A2 and the fourth connection end A4 of the first switching valve 5 are connected; the first connection end B1 of the second switching valve 6 is connected to the third connection end B3 or the fifth connection end B5, and the second connection end B2 of the second switching valve 6 is connected to the fourth connection end B4. The first expansion valve 3 and the second expansion valve 16 are open, the first drive pump 8 is closed, and the second drive pump 9 and the third drive pump 11 are both open, so as to form the first sub-circuit, the fourth sub-circuit, the fifth sub-circuit, and the seventh sub-circuit or the second sub-circuit;

[0109] The first sub-circuit works in conjunction with the seventh sub-circuit to cool the motor, or the second sub-circuit works to cool the motor. The fourth and fifth sub-circuits work together to dehumidify the air. At the same time, the fan 21 can be controlled to either cool the cabin with the fourth sub-circuit or heat the cabin with the fifth sub-circuit.

[0110] Mode 9: Cabin heating, motor cooling, and battery insulation;

[0111] like Figure 10 As shown, the first connection end A1 and the fifth connection end A5 of the first switching valve 5 are connected, and the second connection end A2 and the fourth connection end A4 of the first switching valve 5 are connected; the first connection end B1 of the second switching valve 6 is connected to the third connection end B3 or the fifth connection end B5, and the second connection end B2 of the second switching valve 6 is connected to the fourth connection end B4. The first expansion valve 3 is open, the second expansion valve 16 is closed, and the first drive pump 8, the second drive pump 9, and the third drive pump 11 are all open to form the first sub-circuit, the fifth sub-circuit, the seventh sub-circuit, and the eighth sub-circuit.

[0112] For the eighth sub-circuit, the first drive pump 8 drives the coolant to flow sequentially to the battery heat exchanger 7, the first connection end A1 and the fifth connection end A5 of the first switching valve 5, the fourth connection end A4 and the second connection end A2 of the second switching valve 6, and then returns to the first drive pump 8 to circulate the coolant through the battery heat exchanger 7, so that the battery radiator is kept in a heat preservation state, and thus the battery is kept in a heat preservation state.

[0113] The first sub-circuit works with the fifth sub-circuit to heat the cabin, while the first sub-circuit works with the seventh sub-circuit to cool the motor.

[0114] Mode 10: In-cabin heating and motor / battery cooling mode;

[0115] like Figure 11As shown, the first connection terminal A1 and the second connection terminal A2 of the first switching valve 5 are connected, as are the fourth connection terminal A4 and the fifth connection terminal A5. The first connection terminal B1 of the second switching valve 6 is connected to either the third connection terminal B3 or the fifth connection terminal B5. The second connection terminal B2 of the second switching valve 6 is connected to the fourth connection terminal B4. The first drive pump 8, the second drive pump 9, and the third drive pump 11 are all turned on, the first expansion valve 3 is turned on, and the second expansion valve 16 is turned off, thus forming the first sub-circuit, the fifth sub-circuit, and the ninth or tenth sub-circuit.

[0116] When the second switching valve 6 switches to the connection of the first connection end B1 and the third connection end B3, it forms the ninth sub-circuit. For the ninth sub-circuit, the first drive pump 8 drives the coolant to flow sequentially to the battery heat exchanger 7, the first connection end A1 and the second connection end A2 of the first switching valve 5, the connection part between the second heat exchanger 4 and the functional circuit, the first connection end B1 and the electric connection end B3 of the second switching valve 6, the second drive pump 9, the motor heat exchanger 10, the fourth connection end A4 and the fifth connection end A5 of the first switching valve 5, and the fourth connection end B4 and the second connection end B2 of the second switching valve 6. Then it returns to the first drive pump 8 for circulation. When the coolant flows through the second heat exchanger 4, the low-temperature and low-pressure refrigerant in the air conditioning circuit exchanges heat, which lowers the temperature of the coolant. Then, when the coolant with a lower temperature passes through the battery radiator and the motor radiator, it lowers the temperature of both, thereby dissipating heat for the battery and the motor.

[0117] When the second switching valve 6 switches to the connection of the first connection end B1 and the fifth connection end B5, it forms the tenth sub-circuit. For the tenth sub-circuit, the first drive pump 8 drives the coolant to flow sequentially to the battery heat exchanger 7, the first connection end A1 and the second connection end A2 of the first switching valve 5, the connection part between the second heat exchanger 4 and the functional circuit, the first connection end B1 and the fifth connection end B5 of the second switching valve 6, the second drive pump 9, the motor heat exchanger 10, the fourth connection end A4 and the fifth connection end A5 of the first switching valve 5, and the fourth connection end B4 and the second connection end B2 of the second switching valve 6. Then it returns to the first drive pump 8 for circulation. When the coolant flows through the low-temperature radiator 15, the fan 21 and the active air intake sill 22 make the coolant exchange heat with the outdoor environment, so that the temperature of the coolant decreases. Then the coolant with the lower temperature passes through the battery radiator and the motor radiator, so that the temperature of the two decreases, thereby dissipating heat for the battery and the motor.

[0118] At the same time, the first sub-circuit works with the ninth sub-circuit to dissipate heat from the battery and motor, while the fifth sub-circuit works with the first sub-circuit to heat the cabin.

[0119] Mode 11: Motor heating the battery

[0120] like Figure 12As shown, the first connection terminal A1 and the second connection terminal A2 of the first switching valve 5 are connected, as are the fourth connection terminal A4 and the fifth connection terminal A5. The first connection terminal B1 of the second switching valve 6 is connected to the third connection terminal B3. The second connection terminal B2 of the second switching valve 6 is connected to the fourth connection terminal B4. Simultaneously, the first expansion valve 3, the second expansion valve 16, the compressor 1, and the third drive pump 11 are all closed, while the first drive pump 8 and the second drive pump 9 are open, forming a ninth sub-loop. Coolant circulates in this ninth sub-loop, absorbing heat from the motor as it passes through the motor heat exchanger 10, and then releasing heat to heat the battery as it flows through the battery heat exchanger 7.

[0121] The thermal management system provided in Embodiment 1 of this disclosure is not limited to the above 11 modes.

[0122] Example 2

[0123] A second aspect of this disclosure provides an automobile having a thermal management system provided in a first aspect of this disclosure.

[0124] Specifically, the thermal management system described in this embodiment two can directly use the thermal management system provided in the above embodiment one. For the specific implementation structure, please refer to the relevant content described in the above embodiment one, which will not be repeated here.

[0125] The automotive thermal management system provided in the second aspect of this disclosure can fully utilize the air conditioning circuit to heat the functional circuits in the vehicle body, thereby improving resource utilization, effectively increasing the synergy between circuits, and effectively increasing the energy utilization and temperature control performance of the vehicle.

[0126] All terms used in this disclosure have the same meaning as understood by one of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0127] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0128] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A thermal management system, characterized in that, include: An air conditioning circuit is provided with a compressor (1), a first heat exchanger (2), a first expansion valve (3), and a second heat exchanger (4). The outlet end of the compressor (1) is connected to the first inlet end of the first heat exchanger (2). The first outlet end of the first heat exchanger (2) connected to the first inlet end is connected to the inlet end of the first expansion valve (3). The outlet end of the first expansion valve (3) is connected to the first inlet end of the second heat exchanger (4). The first outlet end of the second heat exchanger (4) connected to the first inlet end is connected to the inlet end of the compressor (1). The air conditioning circuit is provided with refrigerant. The functional circuit includes a first switching valve (5), a second switching valve (6), a battery heat exchanger (7), a first drive pump (8), and a second drive pump (9). The outlet end of the battery heat exchanger (7) is connected to the first connection end of the first switching valve (5), the second connection end of the first switching valve (5) is connected to the second inlet end of the second heat exchanger (4), the second outlet end of the second heat exchanger (4) connected to the second inlet end is connected to the first connection end of the second switching valve (6), and the second connection end of the second switching valve (6) is connected to the inlet end of the first drive pump (8). The first drive pump (8) is connected to the outlet end of the battery heat exchanger (7), the third connection end of the first switching valve (5) is connected to the second inlet end of the first heat exchanger (2), the second outlet end of the first heat exchanger (2) connected to the second inlet end is connected to the fourth connection end of the second switching valve (6), the third connection end of the second switching valve (6) is connected to the inlet end of the second drive pump (9), and the outlet end of the second drive pump (9) is connected to the fourth connection end of the first switching valve (5). The functional circuit is provided with coolant. The switching of the first switching valve (5) and the second switching valve (6) enables the air conditioning circuit to heat or cool the battery heat exchanger (7).

2. The thermal management system according to claim 1, characterized in that, The functional loop also includes: The motor heat exchanger (10) has its outlet end connected to the fourth connection end of the first switching valve (5) and its inlet end connected to the outlet end of the second drive pump (9).

3. The thermal management system according to claim 2, characterized in that, The functional loop also includes: The third drive pump (11) is connected at its inlet end to the second outlet end of the first heat exchanger (2) and in parallel with the fourth connection end of the second switching valve (6). The inlet end of the inlet heater (12) is connected to the outlet end of the third drive pump (11); A one-way valve (13) is provided, the inlet end of which is connected to the outlet end of the cabin heater (12), and the outlet end of which is connected to the second inlet end of the first heat exchanger (2).

4. The thermal management system according to claim 3, characterized in that, The fifth connection end of the first switching valve (5) is connected to the fourth connection end of the second switching valve (6).

5. The thermal management system according to claim 3, characterized in that, Also includes: A positive temperature coefficient heater (14) is provided at the second outlet end of the first heat exchanger (2) and connected in series with the second heat exchanger (4).

6. The thermal management system according to claim 2, characterized in that, Also includes: The low-temperature radiator (15) has its inlet end connected to the fifth connection end of the second switching valve (6) and its outlet end connected to the inlet end of the second drive pump (9).

7. The thermal management system according to claim 2, characterized in that, The air conditioning circuit also includes: The second expansion valve (16) is connected to the first outlet end of the first heat exchanger (2) and is connected in parallel with the first expansion valve (3); The in-cabin cooler (17) has its inlet end connected to the outlet end of the second expansion valve (16) and its outlet end connected to the inlet end of the compressor (1).

8. The thermal management system according to claim 7, characterized in that, The air conditioning circuit also includes: A liquid storage filter device (18) is connected in series at the first outlet end of the first heat exchanger (2) for separating gaseous substances.

9. The thermal management system according to any one of claims 1-8, characterized in that, Also includes: A detection component (19) is provided in the air conditioning circuit and the functional circuit for detecting the temperature and / or pressure in the air conditioning circuit and the functional circuit.

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

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