Vehicle thermal management system and vehicle with same

Abstract

The invention discloses a vehicle thermal management system and a vehicle with the same. The vehicle thermal management system comprises a compressor; the air conditioner subsystem comprises an in-vehicle heat exchanger and a first refrigerant flow path, and the first refrigerant flow path is connected with the compressor and the in-vehicle heat exchanger; and the refrigerator subsystem comprises a first heat exchanger used for adjusting the temperature of the refrigerator, and a heat exchange medium in the refrigerator subsystem is suitable for heat exchange with a refrigerant in the first refrigerant flow path. According to the vehicle heat management system, the refrigerant in the compressor and the air conditioner subsystem does not directly participate in refrigeration or heating of the first heat exchanger, heat exchange is conducted between the refrigerant and the heat exchange medium in the refrigerator subsystem, refrigeration or heating of the first heat exchanger is achieved through the heat exchange medium, then refrigeration or heating of a refrigerator is achieved, and the heat exchange efficiency of the refrigerator is improved. In this way, when the refrigerator subsystem and the air conditioner subsystem share the compressor, the refrigerant can be used for refrigerating or heating other systems.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle thermal management, and more particularly, to a vehicle thermal management system and a vehicle having the same. Background Art

[0002] In the prior art, the refrigerant cycles of refrigerators and air-conditioning systems are usually independent, resulting in low utilization rate of refrigerants and inability to effectively exchange heat between different systems. In addition, when facing multiple thermal management scenarios, traditional systems often require additional equipment or complex control logics, further increasing the complexity and cost of the systems. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. For this purpose, the present invention provides a vehicle thermal management system. In this vehicle thermal management system, the refrigerant in the compressor and the air-conditioning subsystem does not directly participate in the refrigeration or heating of the first heat exchanger. Instead, the refrigerant exchanges heat with the heat exchange medium in the refrigerator subsystem, and the heat exchange medium is used to achieve the refrigeration or heating of the first heat exchanger, and then the refrigeration or heating of the refrigerator is realized. In this way, while the refrigerator subsystem and the air-conditioning subsystem share the compressor, the refrigerant can also be used to achieve the refrigeration or heating of other systems, covering multiple scenarios of the vehicle thermal management system.

[0004] The present invention also provides a vehicle having the above vehicle thermal management system.

[0005] According to an embodiment of the first aspect of the present invention, the vehicle thermal management system includes: a compressor; an air-conditioning subsystem including an in-vehicle heat exchanger for adjusting the temperature of the vehicle cabin and a first refrigerant flow path connected to the compressor and the in-vehicle heat exchanger; a refrigerator subsystem including a first heat exchanger for adjusting the temperature of the refrigerator, and the heat exchange medium in the refrigerator subsystem is adapted to exchange heat with the refrigerant in the first refrigerant flow path.

[0006] According to an embodiment of the present invention, the refrigerant in the compressor and the air-conditioning subsystem does not directly participate in the refrigeration or heating of the first heat exchanger. Instead, the refrigerant exchanges heat with the heat exchange medium in the refrigerator subsystem, and the heat exchange medium is used to achieve the refrigeration or heating of the first heat exchanger, and then the refrigeration or heating of the refrigerator is realized. In this way, while the refrigerator subsystem and the air-conditioning subsystem share the compressor, the refrigerant can also be used to achieve the refrigeration or heating of other systems, covering multiple scenarios of the vehicle thermal management system.

[0007] In addition, the vehicle thermal management system according to the above embodiment of the present invention may further have the following additional technical features:

[0008] According to some embodiments of the present invention, the vehicle thermal management system further includes a heat exchange circuit, and the heat exchange circuit is adapted to perform heat exchange with the motor.

[0009] According to some alternative embodiments of the present invention, the heat exchange circuit includes a radiator for heat exchange with the external environment.

[0010] According to some alternative embodiments of the present invention, the refrigerator subsystem and the heat exchange circuit can be selectively connected.

[0011] According to some specific embodiments of the present invention, the heat exchange circuit is adapted to perform heat exchange with the first refrigerant flow path.

[0012] According to some specific embodiments of the present invention, the vehicle thermal management system includes a multi-way valve. The refrigerator subsystem is connected to two ports of the multi-way valve, and the heat exchange circuit is connected to the other two ports of the multi-way valve. The multi-way valve is switched to connect the refrigerator subsystem and the heat exchange circuit, or both the refrigerator subsystem and the heat exchange circuit independently circulate.

[0013] According to some embodiments of the present invention, the vehicle thermal management system further includes: a second heat exchanger, which includes a first heat exchange flow path and a second heat exchange flow path for mutual heat exchange. The first refrigerant flow path includes the first heat exchange flow path, and the refrigerator subsystem includes the second heat exchange flow path.

[0014] According to some alternative embodiments of the present invention, the first end of the first heat exchange flow path is selectively connected to the suction port and the discharge port of the compressor, and the second end of the first heat exchange flow path is selectively connected to the suction port of the compressor.

[0015] According to some specific embodiments of the present invention, the first end of the first heat exchange flow path is selectively connected to the discharge port through a first control valve, and the first end of the first heat exchange flow path is selectively connected to the suction port through a second control valve.

[0016] According to some alternative embodiments of the present invention, the vehicle thermal management system further includes: a third heat exchanger, which includes a third heat exchange flow path and a fourth heat exchange flow path for mutual heat exchange. The first refrigerant flow path includes the third heat exchange flow path, and the heat exchange circuit includes the fourth heat exchange flow path.

[0017] According to some specific embodiments of the present invention, the first end of the third heat exchange flow path is selectively connected to the second end of the first heat exchange flow path and the discharge port of the compressor, and the second end of the third heat exchange flow path is selectively connected to the suction port of the compressor.

[0018] According to some specific embodiments of the present invention, the air conditioning subsystem further includes: an external condenser, a first end of the external condenser is selectively connected to a second end of the first heat exchange flow path and an exhaust port of the compressor, and a second end of the external condenser is selectively connected to a suction port of the compressor and the second end of the first heat exchange flow path.

[0019] In some embodiments, the first end of the external condenser is selectively communicated with the exhaust port through a third control valve, the first end of the external condenser is selectively communicated with the second end of the first heat exchange flow path through a fourth control valve, and the second end of the external condenser is selectively connected to the second end of the first heat exchange flow path through a fifth control valve.

[0020] In some embodiments, the in-vehicle heat exchanger includes an air conditioning condenser, a first end of the air conditioning condenser is connected to the exhaust port of the compressor, and a second end of the air conditioning condenser is selectively connected to the second end of the first heat exchange flow path, a first end of the third heat exchange flow path, and a first end of the external condenser.

[0021] According to some specific embodiments of the present invention, the vehicle thermal management system further includes a fourth heat exchanger for exchanging heat with the battery pack, a first end of the fourth heat exchanger is selectively connected to the suction port and the exhaust port of the compressor, and a second end of the fourth heat exchanger is selectively connected to the second end of the external condenser, the second end of the first heat exchange flow path, the first end of the third heat exchange flow path, and the second end of the third heat exchange flow path.

[0022] In some embodiments, a first expansion valve is connected in series at the first end of the fourth heat exchanger.

[0023] In some examples, a second expansion valve is connected in series at the second end of the fourth heat exchanger.

[0024] According to some specific embodiments of the present invention, the in-vehicle heat exchanger includes an air conditioning evaporator, a first end of the air conditioning evaporator is connected to the suction port of the compressor, and a second end of the air conditioning evaporator is selectively connected to the second end of the external condenser and the second end of the third heat exchange flow channel.

[0025] In some embodiments, a third expansion valve is connected in series at the end where the air conditioning evaporator is connected to the external condenser.

[0026] According to some alternative embodiments of the present invention, the vehicle thermal management system further includes: an electric fan, and the electric fan is arranged corresponding to the radiator.

[0027] According to some embodiments of the present invention, the vehicle thermal management system further includes: a gas-liquid separator connected to the suction port of the compressor for separating the liquid and gaseous components in the refrigerant.

[0028] According to some embodiments of the present invention, the refrigerator subsystem further includes a first driving pump for driving the heat exchange medium to flow in the refrigerator subsystem.

[0029] According to some embodiments of the present invention, the heat exchange circuit further includes a second driving pump for driving the heat exchange medium to flow in the heat exchange circuit. According to a second aspect embodiment of the present invention, a vehicle is provided, which includes the vehicle thermal management system according to the embodiments of the first aspect of the present invention.

[0030] In the vehicle according to the embodiments of the present invention, by using the vehicle thermal management system according to the embodiments of the first aspect of the present invention, the refrigerant in the compressor and the air-conditioning subsystem does not directly participate in the refrigeration or heating of the first heat exchanger, but instead exchanges heat between the refrigerant and the heat exchange medium in the refrigerator subsystem, and uses the heat exchange medium to achieve refrigeration or heating of the first heat exchanger, and further achieve refrigeration or heating of the refrigerator. In this way, while the refrigerator subsystem and the air-conditioning subsystem share the compressor, it is also possible to use the refrigerant to achieve refrigeration or heating of other systems, covering various scenarios of the vehicle thermal management system.

[0031] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. Description of the Drawings

[0032] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0033] Figure 1 is a schematic structural diagram of a vehicle thermal management system according to an embodiment of the present invention;

[0034] Figure 2 is a schematic diagram of cycle 1 executed by the vehicle thermal management system of the present application embodiment;

[0035] Figure 3 is a schematic diagram of cycle 2 executed by the vehicle thermal management system of the present application embodiment;

[0036] Figure 4 is a schematic diagram of cycle 3 executed by the vehicle thermal management system of the present application embodiment;

[0037] Figure 5 is a schematic diagram of cycle 4 executed by the vehicle thermal management system of the present application embodiment;

[0038] Figure 6 It is a schematic diagram of Cycle 5 executed by the vehicle thermal management system according to an embodiment of the present application;

[0039] Figure 7 It is a schematic diagram of Cycle 6 executed by the vehicle thermal management system according to an embodiment of the present application;

[0040] Figure 8 It is a schematic diagram of Cycle 7 executed by the vehicle thermal management system according to an embodiment of the present application;

[0041] Figure 9 It is a schematic diagram of Cycle 8 executed by the vehicle thermal management system according to an embodiment of the present application;

[0042] Figure 10 It is a schematic diagram of Cycle 9 executed by the vehicle thermal management system according to an embodiment of the present application;

[0043] Figure 11 It is a schematic diagram of Cycle 10 executed by the vehicle thermal management system according to an embodiment of the present application;

[0044] Figure 12 It is a schematic diagram of Cycle 11 executed by the vehicle thermal management system according to an embodiment of the present application;

[0045] Figure 13 It is a schematic diagram of Cycle 12 executed by the vehicle thermal management system according to an embodiment of the present application;

[0046] Figure 14 It is a schematic diagram of Cycle 13 executed by the vehicle thermal management system according to an embodiment of the present application;

[0047] Figure 15 It is a schematic diagram of Cycle 14 executed by the vehicle thermal management system according to an embodiment of the present application;

[0048] Figure 16 It is a schematic diagram of Cycle 15 executed by the vehicle thermal management system according to an embodiment of the present application;

[0049] Figure 17 It is a schematic diagram of Cycle 16 executed by the vehicle thermal management system according to an embodiment of the present application;

[0050] Figure 18 It is a schematic diagram of Cycle 17 executed by the vehicle thermal management system according to an embodiment of the present application;

[0051] Figure 19 It is a schematic diagram of Cycle 18 executed by the vehicle thermal management system according to an embodiment of the present application;

[0052] Figure 20 It is a schematic diagram of Cycle 19 executed by the vehicle thermal management system according to an embodiment of the present application;

[0053] Figure 21 It is a schematic diagram of cycle 20 executed by the vehicle thermal management system according to an embodiment of the present application;

[0054] Figure 22 It is a schematic diagram of cycle 21 executed by the vehicle thermal management system according to an embodiment of the present application;

[0055] Figure 23 It is a schematic diagram of cycle 22 executed by the vehicle thermal management system according to an embodiment of the present application;

[0056] Figure 24 It is a schematic diagram of cycle 23 executed by the vehicle thermal management system according to an embodiment of the present application;

[0057] Figure 25 It is a schematic diagram of cycle 24 executed by the vehicle thermal management system according to an embodiment of the present application;

[0058] Figure 26 It is a schematic diagram of cycle 25 executed by the vehicle thermal management system according to an embodiment of the present application;

[0059] Figure 27 It is a schematic diagram of cycle 26 executed by the vehicle thermal management system according to an embodiment of the present application;

[0060] Figure 28 It is a schematic diagram of cycle 27 executed by the vehicle thermal management system according to an embodiment of the present application;

[0061] Figure 29 It is a schematic diagram of cycle 28 executed by the vehicle thermal management system according to an embodiment of the present application;

[0062] Figure 30 It is a schematic diagram of cycle 29 executed by the vehicle thermal management system according to an embodiment of the present application;

[0063] Figure 31 It is a schematic diagram of cycle 30 executed by the vehicle thermal management system according to an embodiment of the present application;

[0064] Figure 32 It is a schematic diagram of cycle 31 executed by the vehicle thermal management system according to an embodiment of the present application;

[0065] Figure 33 It is a schematic diagram of cycle 32 executed by the vehicle thermal management system according to an embodiment of the present application;

[0066] Figure 34 It is a schematic diagram of cycle 33 executed by the vehicle thermal management system according to an embodiment of the present application.

[0067] Reference Numerals: 1, compressor; 2, air conditioner condenser; 3, fifth expansion valve; 4, third control valve; 5, external condenser; 6, gas-liquid separator; 7, second control valve; 8, eighth control valve; 9, seventh control valve; 10, first control valve; 11, first expansion valve; 12, first drive pump; 13, first heat exchanger; 14, second heat exchanger; 15, fourth heat exchanger; 16, sixth control valve; 17, air conditioner evaporator; 18, fourth expansion valve; 19, second expansion valve; 20, third expansion valve; 21, fifth control valve; 22, radiator; 23, electric fan; 24, third heat exchanger; 25, first check valve; 26, motor; 27, second drive pump; 28, second check valve; 29, multi-way valve; a, first port; d, second port; c, third port; b, fourth port; 30, fourth control valve;

[0068] 41, refrigerator subsystem; 42, heat exchange circuit. Detailed Embodiment

[0069] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0070] A vehicle thermal management system according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0071] As Figure 1 shown, the vehicle thermal management system according to an embodiment of the present invention includes a compressor 1, an air conditioner subsystem, and a refrigerator subsystem 41.

[0072] The air conditioner subsystem includes an in-vehicle heat exchanger and a first refrigerant flow path. The in-vehicle heat exchanger is used to adjust the temperature of the vehicle cabin. The first refrigerant flow path is connected to the compressor 1 and the in-vehicle heat exchanger. The refrigerator subsystem 41 includes a first heat exchanger 13. The first heat exchanger 13 is used to adjust the temperature of the refrigerator. The heat exchange medium in the refrigerator subsystem 41 is adapted to exchange heat with the first refrigerant flow path.

[0073] When the heat exchange medium in the refrigerator subsystem 41 exchanges heat with the first refrigerant flow path, the heat exchange medium in the refrigerator subsystem 41 can absorb the cold or heat in the refrigerant. When the heat exchange medium in the refrigerator subsystem 41 flows through the first heat exchanger 13, the heat exchange medium in the first heat exchanger 13 can cool or heat the air near the first heat exchanger 13, thereby realizing the refrigeration or heating of the refrigerator.

[0074] Specifically, the refrigerant is adapted to flow in the first refrigerant flow path. The compressor 1 is used to compress the refrigerant, so as to compress the refrigerant at low temperature and low pressure into a refrigerant at high temperature and high pressure, and at the same time push the refrigerant to flow in the first refrigerant flow path. During the cyclic flow of the refrigerant, heat release and heat absorption will occur to the refrigerant.

[0075] Among them, in the refrigerator subsystem 41, the heat exchange medium exchanges heat with the refrigerant in the first refrigerant flow path. When the refrigerant exchanging heat with the heat exchange medium is in a heat release state, the heat exchange medium can absorb the heat released by the refrigerant when flowing through the first heat exchanger 13, so as to become a high-temperature heat exchange medium. The heat in the heat exchange medium can be transferred to the refrigerator through the first heat exchanger 13 to achieve heating of the refrigerator.

[0076] In the refrigerator subsystem 41, the heat exchange medium exchanges heat with the first refrigerant flow path. When the refrigerant exchanging heat with the heat exchange medium in the refrigerator subsystem 41 is in a heat absorption state, the refrigerant can absorb the heat in the heat exchange medium to turn the heat exchange medium into a low-temperature heat exchange medium. When the heat exchange medium flows through the first heat exchanger 13, the heat exchange medium can absorb the heat in the refrigerator through the first heat exchanger 13 to achieve refrigeration of the refrigerator.

[0077] Specifically, the refrigerant in the compressor 1 and the air-conditioning subsystem does not directly participate in the refrigeration or heating of the first heat exchanger 13, but enables the heat exchange medium in the refrigerator subsystem 41 to exchange heat with the refrigerant, and uses the heat exchange medium to achieve refrigeration or heating of the refrigerator.

[0078] Among them, the compressor 1 can be the compressor 1 in the air-conditioning module of the vehicle. When using this compressor 1 to achieve air-conditioning refrigeration or heating, when the refrigerant in the first refrigerant flow path exchanges heat with the heat exchange medium in the refrigerator subsystem 41, it can also achieve refrigeration or heating of the refrigerator; or, this compressor 1 can be used to refrigerate or heat the refrigerator alone; it can also use this compressor 1 to refrigerate or heat other systems.

[0079] In this way, on the one hand, the utilization rate of resources is improved, and on the other hand, there is no need to set two compressors 1 in the vehicle, which is convenient for cost saving and releasing space in the vehicle.

[0080] According to the vehicle thermal management system of the embodiment of the present invention, the refrigerant in the compressor 1 and the air-conditioning subsystem does not directly participate in the refrigeration or heating of the first heat exchanger 13, but enables the refrigerant to exchange heat with the heat exchange medium in the refrigerator subsystem 41, and uses the heat exchange medium to achieve refrigeration or heating of the first heat exchanger 13, and further achieve refrigeration or heating of the refrigerator. In this way, while sharing the compressor between the refrigerator subsystem and the air-conditioning subsystem, it can also use the refrigerant to achieve refrigeration or heating of other systems, and can cover multiple scenarios of the vehicle thermal management system.

[0081] The vehicle thermal management system according to specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0082] In some specific embodiments of the present invention, as Figure 1 shown, the vehicle thermal management system includes a compressor 1, an air conditioning subsystem, and a refrigerator subsystem 41.

[0083] In some embodiments of the present invention, the vehicle thermal management system further includes a heat exchange circuit 42, and the heat exchange circuit 42 is adapted to perform heat exchange with the motor 26 so as to be able to dissipate heat from the motor 26.

[0084] In some alternative embodiments of the present invention, the heat exchange circuit 42 includes a radiator 22, and the radiator 22 is adapted to perform heat exchange with the external environment. The heat exchange medium in the heat exchange circuit 42 is adapted to perform heat exchange with the radiator 22 after exchanging heat with the motor 26, so as to absorb the heat at the motor 26 and dissipate it at the radiator 22, thereby realizing the cooling of the motor 26.

[0085] Among them, the motor 26 is adapted to generate heat during operation, and if the motor 26 is in a high-temperature environment, it will affect the operation efficiency and safety of the motor 26. The heat exchange medium is adapted to circulate in the heat exchange circuit 42. Specifically, when the heat exchange medium flows through the motor 26, the heat exchange medium can take away the heat near the motor 26, and when the heat exchange medium flows towards the radiator 22, the heat exchange medium can dissipate the heat to the external environment at the radiator 22, so as to realize the heat dissipation of the motor 26.

[0086] In some embodiments, as Figure 1 shown, the vehicle thermal management system further includes an electric fan 23, and the electric fan 23 is arranged corresponding to the radiator 22 to improve the heat dissipation efficiency and effect of the radiator 22.

[0087] In some alternative embodiments of the present invention, the refrigerator subsystem 41 and the heat exchange circuit 42 can be selectively connected.

[0088] Among them, when the refrigerator subsystem 41 and the heat exchange circuit 42 are connected, the heat exchange medium is adapted to flow in the refrigerator subsystem 41 and the heat exchange circuit 42. At this time, the heat exchange medium can direct the heat near the motor 26 to the first heat exchanger 13, so as to use the heat generated by the motor 26 to heat the refrigerator. In this way, the waste heat generated by the motor 26 can be utilized, which is convenient for improving the utilization rate of resources.

[0089] Specifically, when the refrigerator subsystem 41 is connected to the heat exchange circuit 42, the heat exchange medium can circulate between the motor 26, the first heat exchanger 13, and the radiator 22. After flowing through the motor 26, the heat exchange medium flows to the first heat exchanger 13 and the radiator 22. When the heat exchange medium flows through the motor 26, the heat exchange medium can absorb the heat generated by the motor 26. When the heat exchange medium flows to the first heat exchanger 13, the first heat exchanger 13 releases heat near the refrigerator, thereby realizing heating of the refrigerator.

[0090] In some specific embodiments of the present invention, the heat exchange circuit 42 is adapted to perform heat exchange with the first refrigerant flow path. The heat exchange medium in the heat exchange circuit 42 can absorb the cold of the refrigerant in the first refrigerant flow path. When the heat exchange medium flows through the motor 26, it can absorb the heat generated by the motor 26, realizing cooling of the environment near the motor 26 to cool the motor 26.

[0091] Specifically, the refrigerant is adapted to flow in the first refrigerant flow path. The compressor 1 is used to compress the refrigerant to compress the low-temperature and low-pressure refrigerant into a high-temperature and high-pressure refrigerant, and at the same time push the refrigerant to flow in the first refrigerant flow path. During the cyclic flow of the refrigerant, the refrigerant will release and absorb heat.

[0092] When the heat exchange circuit 42 performs heat exchange with the first refrigerant flow path and the refrigerant that exchanges heat with the heat exchange medium in the heat exchange circuit 42 is in an endothermic state, the refrigerant can absorb the heat in the heat exchange medium to turn the heat exchange medium into a low-temperature heat exchange medium. When the heat exchange medium flows through the motor 26, the heat exchange medium can absorb the heat generated by the motor 26 to realize cooling of the motor 26.

[0093] In some specific embodiments of the present invention, as Figure 1 shown, the vehicle thermal management system includes a multi-way valve 29. The refrigerator subsystem 41 is connected to two ports of the multi-way valve 29, and the heat exchange circuit 42 is connected to the other two ports of the multi-way valve 29. The multi-way valve 29 is switched so that the refrigerator subsystem 41 is connected to the heat exchange circuit 42, or both the refrigerator subsystem 41 and the heat exchange circuit 42 circulate independently.

[0094] Among them, when the multi-way valve 29 is switched so that the refrigerator subsystem 41 is connected to the heat exchange circuit 42, the heat exchange medium can circulate between the refrigerator subsystem 41 and the heat exchange circuit 42. At this time, the heat exchange medium can circulate between the motor 26, the first heat exchanger 13, and the radiator 22. After flowing through the motor 26, the heat exchange medium flows to the first heat exchanger 13 and the radiator 22. When the heat exchange medium flows through the motor 26, the heat exchange medium can absorb the heat generated by the motor 26. When the heat exchange medium flows to the first heat exchanger 13, the first heat exchanger 13 releases heat near the refrigerator to be able to use the waste heat generated by the motor 26 to heat the refrigerator.

[0095] In addition, when the multi-way valve 29 is switched to connect the refrigerator subsystem 41 with the heat exchange circuit 42, or when the refrigerator subsystem 41 and the heat exchange circuit 42 circulate independently, the first refrigerant flow path can exchange heat with the refrigerator subsystem 41, or exchange heat with the heat exchange circuit 42, or exchange heat with both the refrigerator subsystem 41 and the heat exchange circuit 42 simultaneously. Since the refrigerant and the heat exchange medium are in different flow paths, the flow of the refrigerant and the heat exchange medium will not interfere with each other.

[0096] In some examples, the first refrigerant flow path exchanges heat with the refrigerator subsystem 41. The heat exchange medium in the refrigerator subsystem 41 can absorb the heat or cold of the refrigerant in the first refrigerant flow path. The heat exchange medium in the refrigerator subsystem 41 exchanges heat with the refrigerator through the first heat exchanger 13, thereby realizing refrigeration or heating of the refrigerator.

[0097] In other examples, the first refrigerant flow path exchanges heat with the heat exchange circuit 42. The heat exchange medium in the heat exchange circuit 42 can absorb the cold of the refrigerant in the first refrigerant flow path. When the heat exchange medium flows through the motor 26, it can absorb the heat generated by the motor 26, realizing refrigeration of the environment near the motor 26 to cool the motor 26.

[0098] In still other examples, the first refrigerant flow path exchanges heat with both the refrigerator subsystem 41 and the heat exchange circuit 42 simultaneously. The first refrigerant flow path exchanges heat with the refrigerator subsystem 41 and the heat exchange circuit 42 in sequence to simultaneously realize heating of the refrigerator and cooling of the motor 26.

[0099] Specifically, during the circulation of the refrigerant, the heat exchange medium in the refrigerator subsystem 41 can absorb the heat of the refrigerant in the first refrigerant flow path. The heat exchange medium in the refrigerator subsystem 41 exchanges heat with the refrigerator through the first heat exchanger 13, thereby realizing heating of the refrigerator.

[0100] The heat exchange medium in the heat exchange circuit 42 can absorb the cold of the refrigerant in the first refrigerant flow path. When the heat exchange medium flows through the motor 26, it can absorb the heat generated by the motor 26, realizing refrigeration of the environment near the motor 26 to cool the motor 26.

[0101] In some specific embodiments, the multi-way valve 29 includes a first port a, a second port d, a third port c, and a fourth port b. The first port a and the second port d are respectively connected to both ends of the refrigerator subsystem 41, and the third port c and the fourth port b are respectively connected to both ends of the heat exchange circuit 42.

[0102] When the first port a is communicated with the fourth port b and the second port d is communicated with the third port c, the refrigerator subsystem 41 is communicated with the heat exchange circuit 42.

[0103] When the first port a is connected to the second port d and the third port c is connected to the fourth port b, the refrigerator subsystem 41 and the heat exchange circuit 42 circulate independently.

[0104] Specifically, by controlling the connection state between the ports of the multi-way valve 29, the selective connection between the refrigerator subsystem 41 and the heat exchange circuit 42 can be achieved.

[0105] In some examples, the multi-way valve 29 may include four solenoid valves, and the four solenoid valves are respectively connected between the first port a and the second port d, between the first port a and the fourth port b, between the third port c and the second port d, and between the third port c and the fourth port b of the multi-way valve 29 to control the connection state between the ports of the multi-way valve 29.

[0106] In some embodiments of the present invention, the vehicle thermal management system further includes a second heat exchanger 14. The second heat exchanger 14 includes a first heat exchange flow path and a second heat exchange flow path that exchange heat with each other. The first refrigerant flow path includes the first heat exchange flow path, and the refrigerator subsystem 41 includes the second heat exchange flow path.

[0107] The first end of the first heat exchange flow path is selectively connected to the suction port and the discharge port of the compressor 1, and the second end of the first heat exchange flow path is selectively connected to the suction port of the compressor 1. Thus, when the refrigerant flows through the first heat exchange flow path, heat is released or absorbed at the first heat exchange flow path, and thus the refrigeration or heating of the refrigerator is achieved.

[0108] In some embodiments, the first end of the first heat exchange flow path is selectively connected to the discharge port through the first control valve 10 to achieve the conduction or disconnection of the first end of the first heat exchange flow path and the discharge port through the first control valve 10.

[0109] The first end of the first heat exchange flow path is selectively connected to the suction port through the second control valve 7 to achieve the conduction or disconnection of the first end of the first heat exchange flow path and the suction port through the second control valve 7.

[0110] In some alternative embodiments of the present invention, the air conditioning subsystem includes a third heat exchanger 24. The third heat exchanger 24 includes a third heat exchange flow path and a fourth heat exchange flow path that exchange heat with each other. The first refrigerant flow path includes the third heat exchange flow path, and the heat exchange circuit 42 includes the fourth heat exchange flow path.

[0111] The first end of the third heat exchange flow path is selectively connected to the second end of the first heat exchange flow path and the discharge port of the compressor 1, and the second end of the third heat exchange flow path is selectively connected to the suction port of the compressor 1, so that the refrigerant can release heat at the third heat exchange flow path when flowing through the third heat exchange flow path, and thus the cooling of the motor 26 is achieved.

[0112] Wherein, when the first end of the third heat exchange flow path is connected to the second end of the first heat exchange flow path, while cooling the motor 26, the heating of the refrigerator can also be realized.

[0113] In some embodiments, the in-vehicle heat exchanger includes an air-conditioning condenser 2. The first end of the air-conditioning condenser 2 is connected to the exhaust port of the compressor 1. The first end of the third heat exchange flow path is connected to the second end of the air-conditioning condenser 2 and is selectively communicated with the second end of the first heat exchange flow path. The second end of the third heat exchange flow path is selectively communicated with the suction port of the compressor 1 to realize the cooling of the motor 26.

[0114] Specifically, when one end of the third heat exchange flow path is communicated with the air-conditioning condenser 2 and the other end is communicated with the suction port of the compressor 1, the refrigerant is adapted to circulate between the compressor 1 - the air-conditioning condenser 2 - the third heat exchange flow path - the compressor 1. The refrigerant absorbs heat at the third heat exchange flow path, and then absorbs the heat of the heat exchange medium in the fourth heat exchange flow path to refrigerate the heat exchange medium. The heat exchange medium absorbs the heat near the motor 26 when flowing through the motor 26, so as to be able to cool the motor 26.

[0115] When one end of the third heat exchange flow path is communicated with the first heat exchange flow path and the other end is communicated with the suction port of the compressor 1, the refrigerant is adapted to circulate between the compressor 1 - the first heat exchange flow path - the third heat exchange flow path - the compressor 1. The refrigerant releases heat at the first heat exchange flow path, and then heats the heat exchange medium in the second heat exchange flow path. The heat exchange medium releases heat when flowing through the first heat exchanger 13 to realize the heating of the refrigerator.

[0116] The refrigerant flowing through the first heat exchange flow path flows to the third heat exchange flow path, absorbs heat at the third heat exchange flow path, and then absorbs the heat of the heat exchange medium in the fourth heat exchange flow path to refrigerate the heat exchange medium. The heat exchange medium absorbs the heat near the motor 26 when flowing through the motor 26, so as to be able to cool the motor 26.

[0117] In some embodiments, a second driving pump 27 is provided in the heat exchange circuit 42. The second driving pump 27 is adapted to drive the heat exchange medium to circulate in the heat exchange circuit 42, so that the heat exchange medium can release heat when flowing through the fourth heat exchange flow path or the radiator 22, and absorb heat when flowing through the motor 26 to realize the cooling of the motor 26.

[0118] In some alternative embodiments of the present invention, the air-conditioning subsystem further includes an out-of-vehicle condenser 5. The first end of the out-of-vehicle condenser 5 is selectively connected to the second end of the first heat exchange flow path and the exhaust port of the compressor 1. The second end of the out-of-vehicle condenser 5 is selectively connected to the suction port of the compressor 1 and the second end of the first heat exchange flow path.

[0119] When the refrigerant circulates in the compressor 1 and the first refrigerant flow path, the high-temperature and high-pressure refrigerant flowing out of the outlet of the compressor 1 flows to the first heat exchange flow path, and the refrigerant exchanges heat with the second heat exchange flow path at the first heat exchange flow path. At this time, the heat exchange medium in the second heat exchange flow path can absorb the heat in the refrigerant, and then the high-temperature heat exchange medium flows to the first heat exchanger 13 and releases heat at the first heat exchanger 13, thereby realizing the heating of the refrigerator.

[0120] The refrigerant flowing through the first heat exchange flow path releases heat and then flows to the external condenser 5 outside the vehicle. After absorbing the heat in the external environment at the external condenser 5 outside the vehicle, it flows to the compressor 1.

[0121] In some embodiments, a first driving pump 12 is provided in the refrigerator subsystem 41. The first driving pump 12 is adapted to drive the heat exchange medium to circulate in the refrigerator subsystem 41, so that the heat exchange medium can absorb or release heat when flowing through the second heat exchange flow path, and release or absorb heat when flowing through the first heat exchanger 13, so as to realize the refrigeration or heating of the refrigerator.

[0122] In some specific embodiments, a fourth expansion valve 18 is provided between the first heat exchange flow path and the external condenser 5 outside the vehicle. The refrigerant is adapted to circulate between the compressor 1, the first heat exchange flow path, and the external condenser 5 outside the vehicle. The compressor 1 is used to compress the gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant. The high-temperature and high-pressure gaseous refrigerant releases heat when flowing through the first heat exchange flow path and becomes a high-pressure liquid refrigerant. The high-pressure liquid refrigerant flows through the fourth expansion valve 18 to throttle and depressurize and becomes a low-temperature and low-pressure liquid refrigerant. The low-temperature and low-pressure liquid refrigerant absorbs the heat outside the vehicle when flowing through the external condenser 5 outside the vehicle and becomes a low-temperature gaseous refrigerant. The compressor 1 compresses the low-temperature gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant, thereby realizing the circulation of the refrigerant.

[0123] In some embodiments, the second heat exchanger 14 further includes a heat exchange plate, and the first heat exchange flow path and the second heat exchange flow path exchange heat through the heat exchange plate.

[0124] In some other embodiments, the first heat exchange flow path and the second heat exchange flow path are in direct contact for heat exchange.

[0125] In some alternative embodiments of the present invention, the first end of the first heat exchange flow path is selectively communicated with the exhaust port through the first control valve 10, and the first end of the external condenser 5 outside the vehicle is selectively communicated with the second end of the first heat exchange flow path.

[0126] In some alternative embodiments of the present invention, the in-vehicle heat exchanger includes an air-conditioning condenser 2. The first end of the air-conditioning condenser 2 is connected to the exhaust port of the compressor 1, and the second end of the air-conditioning condenser 2 can be selectively connected to the second end of the first heat exchange flow path, the first end of the third heat exchange flow path, and the first end of the external condenser 5 outside the vehicle to realize different modes of the vehicle heat pipe system.

[0127] In some embodiments, a third control valve 4 is provided between the air conditioner condenser 2 and the outside condenser 5 to control their connection or disconnection. The first heat exchange flow path is selectively connected to the air conditioner condenser 2 and the suction port of the compressor 1 respectively.

[0128] Specifically, when the first control valve 10 disconnects the first heat exchange flow path and the exhaust port, and the third control valve 4 disconnects the air conditioner condenser 2 and the outside condenser 5, and the first heat exchange flow path is connected to the air conditioner condenser 2 and the suction port, the refrigerant circulates between the compressor 1 - the air conditioner condenser 2 - the first heat exchange flow path - the compressor 1 to cool the refrigerator while heating the interior of the vehicle.

[0129] Among them, the refrigerant is adapted to release heat at the air conditioner condenser 2 to heat the interior of the vehicle; the refrigerant is adapted to absorb heat at the first heat exchange flow path, and then absorb the heat of the heat exchange medium in the second heat exchange flow path to cool the heat exchange medium. The heat exchange medium absorbs the heat in the refrigerator when flowing through the first heat exchanger 13 to be able to cool the refrigerator.

[0130] In some examples, an expansion valve is provided between the air conditioner condenser 2 and the first heat exchange flow path. The refrigerant is adapted to circulate between the compressor 1 - the air conditioner condenser 2 - the expansion valve - the first heat exchange flow path - the compressor 1. The compressor 1 is used to compress the gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant. The high-temperature and high-pressure gaseous refrigerant releases heat when flowing through the air conditioner condenser 2 and becomes a high-pressure liquid refrigerant. The high-pressure liquid refrigerant flows through the expansion valve to throttle and depressurize and becomes a low-temperature and low-pressure liquid refrigerant. The low-temperature and low-pressure liquid refrigerant absorbs the heat of the heat exchange medium in the second heat exchange flow path when flowing through the first heat exchange flow path and becomes a low-temperature gaseous refrigerant. The compressor 1 compresses the low-temperature gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant, thereby realizing the circulation of the refrigerant.

[0131] When the first control valve 10 disconnects the first heat exchange flow path and the exhaust port, the third control valve 4 connects the air conditioner condenser 2 and the outside condenser 5, the outside condenser 5 is connected to the first heat exchange flow path, and the first heat exchange flow path is connected to the suction port, the refrigerant circulates between the compressor 1 - the air conditioner condenser 2 - the outside condenser 5 - the first heat exchange flow path - the compressor 1 to be able to cool the refrigerator alone.

[0132] Specifically, the refrigerant is adapted to release heat at the outside condenser 5; the refrigerant is adapted to absorb heat at the first heat exchange flow path, and then absorb the heat of the heat exchange medium in the second heat exchange flow path to cool the heat exchange medium. The heat exchange medium absorbs the heat in the refrigerator when flowing through the first heat exchanger 13 to be able to cool the refrigerator.

[0133] In some embodiments, one end of the out-of-vehicle condenser 5 is connected to the air-conditioning condenser 2 through a third control valve 4, and the other end is connected to the first heat exchange flow path through a first check valve 25. A fourth expansion valve 18 is provided between the first heat exchange flow path and the other end of the out-of-vehicle condenser 5. The first check valve 25 is used to unidirectionally guide the refrigerant flowing through the out-of-vehicle condenser 5 to the first heat exchange flow path.

[0134] The refrigerant is adapted to circulate between the compressor 1 - air-conditioning condenser 2 - out-of-vehicle condenser 5 - fourth expansion valve 18 - first heat exchange flow path - compressor 1. The compressor 1 is used to compress the gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant. The high-temperature and high-pressure gaseous refrigerant releases heat when flowing through the out-of-vehicle condenser 5 and becomes a high-pressure liquid refrigerant. The high-pressure liquid refrigerant flows through the fourth expansion valve 18 to throttle down and become a low-temperature and low-pressure liquid refrigerant. The low-temperature and low-pressure liquid refrigerant absorbs the heat of the heat exchange medium in the second heat exchange flow path when flowing through the first heat exchange flow path and becomes a low-temperature gaseous refrigerant. The compressor 1 compresses the low-temperature gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant, thereby realizing the circulation of the refrigerant.

[0135] In some embodiments, a second control valve 7 is provided between the first heat exchange flow path and the suction port of the compressor 1 to control the connection or disconnection between the two.

[0136] In some embodiments of the present invention, the vehicle thermal management system further includes a fourth heat exchanger 15, which can be used for heat exchange with the battery pack. The first end of the fourth heat exchanger 15 is connected to the suction port and the discharge port of the compressor 1. The second end of the fourth heat exchanger 15 can be selectively connected to the second end of the out-of-vehicle condenser 5, the second end of the first heat exchange flow path, the first end of the third heat exchange flow path, and the second end of the third heat exchange flow path, so that the refrigerant absorbs or releases heat when flowing through the fourth heat exchanger 15 to cool or heat the battery pack.

[0137] At the same time, by controlling the second end of the fourth heat exchanger 15 to be selectively connected to the second end of the out-of-vehicle condenser 5, the second end of the first heat exchange flow path, the first end of the third heat exchange flow path, and the second end of the third heat exchange flow path, it is also possible to realize the refrigeration or heating of the refrigerator or the cooling of the motor 26 while realizing the cooling or heating of the battery pack.

[0138] In some embodiments, the refrigerant flowing out of the discharge port of the compressor 1 is adapted to flow to the fourth heat exchanger 15 and exchange heat with the refrigerator subsystem 41 after flowing through the fourth heat exchanger 15.

[0139] Among them, the refrigerant is adapted to release heat at the fourth heat exchanger 15, and thus can heat the battery pack. The refrigerant is adapted to absorb heat when exchanging heat with the refrigerator subsystem 41, and thus realizes the refrigeration of the heat exchange medium in the refrigerator subsystem 41, so that the heat exchange medium can absorb the heat in the refrigerator when flowing to the first heat exchanger 13, realizing the refrigeration of the refrigerator.

[0140] In some alternative embodiments of the present invention, the fourth heat exchanger 15 is selectively communicated with the exhaust port and the suction port, and the first refrigerant flow path is selectively communicated with the exhaust port and the suction port.

[0141] The thermal management system includes a first state and a second state.

[0142] In the first state, the fourth heat exchanger 15 is communicated with the exhaust port and the first refrigerant flow path is communicated with the suction port. At this time, the high-temperature gaseous state after being compressed by the compressor 1 flows to the fourth heat exchanger 15, and then heats the battery pack and the refrigerating refrigerator simultaneously, or heats the battery pack alone.

[0143] In some embodiments, the refrigerant flowing out of the discharge port of the compressor 1 is adapted to flow to the fourth heat exchanger 15, and after flowing through the fourth heat exchanger 15, it exchanges heat with the refrigerator subsystem 41.

[0144] Wherein, the refrigerant is adapted to release heat at the fourth heat exchanger 15, and then can heat the battery pack. When the refrigerant exchanges heat with the refrigerator subsystem 41, it is adapted to absorb heat, and then realizes the refrigeration of the heat exchange medium in the refrigerator subsystem 41, so that the heat exchange medium can absorb the heat in the refrigerator when flowing to the first heat exchanger 13, and realizes the refrigeration of the refrigerator.

[0145] In the second state, the first refrigerant flow path is communicated with the exhaust port and the fourth heat exchanger 15 is communicated with the suction port. At this time, the refrigerant flowing out of the discharge port of the compressor 1 is adapted to flow to the first refrigerant flow path, and after releasing heat, it flows to the fourth heat exchanger 15 to cool the battery pack and heat the refrigerator simultaneously, or cool the battery pack alone.

[0146] In some embodiments, the refrigerant is adapted to release heat when exchanging heat with the refrigerator subsystem 41, and then realizes the heating of the heat exchange medium in the refrigerator subsystem 41, so that the heat exchange medium can release heat when flowing to the first heat exchanger 13, and realizes the heating of the refrigerator. After the refrigerant exchanges heat with the refrigerator subsystem 41, it flows to the fourth heat exchanger 15 and absorbs heat at the fourth heat exchanger 15, and then can cool the battery pack.

[0147] In addition, when heating the refrigerator and cooling the battery pack simultaneously, the waste heat generated by the battery pack can be utilized, which is convenient for improving the utilization rate of resources.

[0148] Specifically, the battery pack generates heat during operation. Keeping the battery pack in a high-temperature environment will affect the working efficiency and safety of the battery pack. When the refrigerant flows through the fourth heat exchanger 15, it can take away the heat generated by the battery pack, and when the refrigerant exchanges heat with the heat exchange medium in the refrigerator subsystem 41, it can heat the heat exchange medium, so that the heat exchange medium can heat the refrigerator when flowing through the first heat exchanger 13, and then utilize the waste heat generated by the battery pack.

[0149] In some embodiments, a first expansion valve 11 is connected in series at the first end of the fourth heat exchanger 15, and the opening degree of the first expansion valve 11 is determined according to the cooling outlet pressure and the target pressure of the fourth heat exchanger 15.

[0150] In some embodiments, a second expansion valve 19 is connected in series at the second end of the fourth heat exchanger 15, and the opening degree of the second expansion valve 19 is determined according to the first superheat degree and the first target superheat degree at the cooling outlet of the fourth heat exchanger 15. When the vehicle thermal management requirements include battery refrigeration requirements but do not include air-conditioning refrigeration requirements, the control parameters of the compressor are determined according to the cooling outlet pressure and the target pressure of the fourth heat exchanger 15 for heat exchange with the battery pack.

[0151] For example, when the refrigerator + battery cooling mode is executed, the current state parameters of the refrigerator and the battery are obtained, and the target parameters are obtained according to the cooling gears of the refrigerator and the battery. Cycle 24 is executed, and the refrigerator and the battery are refrigerated by the compressor 1. The compressor speed is controlled by PID calculation based on the difference between the battery cooling outlet pressure and the target pressure, and the difference between the actual temperature and the target temperature of the refrigerator is judged. An expansion valve is connected in series before and after the third heat exchanger (i.e., the first expansion valve 11 and the second expansion valve 19). The battery cooling outlet expansion valve (i.e., the first expansion valve 11) is controlled according to the difference between the battery cooling outlet pressure and the target pressure. If the pressure is too high (the difference is greater than the first preset pressure threshold, such as 0.02 Mpa), the valve opening degree is increased; if the pressure is too low (the difference is less than the second preset pressure threshold, such as -0.02 Mpa), the valve opening degree is decreased; if the difference is between the two thresholds, the current opening degree is maintained. The battery cooling inlet expansion valve (i.e., the second expansion valve 19) is controlled according to the superheat degree at the battery cooling outlet (i.e., the first superheat degree). When the superheat degree at the battery cooling outlet is too low (the difference from the first target superheat degree is less than the first preset superheat threshold, such as -5), the valve opening degree is decreased; if it is too high (the difference is greater than the second preset superheat threshold, such as 5), the valve opening degree is increased; when it is within the range of ±5, the valve opening degree is maintained.

[0152] In some alternative embodiments of the present invention, the in-vehicle heat exchanger includes an air-conditioning evaporator 17. The first end of the air-conditioning evaporator 17 is connected to the suction port of the compressor 1, and the second end of the air-conditioning evaporator 17 is selectively connected to the second end of the out-of-vehicle condenser 5 and the second end of the third heat exchange flow path, so as to realize heating of the refrigerator while using the air-conditioning evaporator 17 to cool the vehicle cabin.

[0153] In some specific embodiments of the present invention, a third expansion valve 20 is connected in series at the end of the air-conditioning evaporator 17 connected to the out-of-vehicle condenser 5 to throttle and depressurize the refrigerant flowing through the out-of-vehicle condenser 5, so that the refrigerant can cool the vehicle cabin when flowing through the air-conditioning evaporator 17.

[0154] In some embodiments of the present invention, the vehicle thermal management system further includes a gas-liquid separator 6, which is connected to the suction port of the compressor 1 and is used to separate the liquid and gaseous components in the refrigerant, preventing the liquid refrigerant from entering the compressor 1 and avoiding liquid slug damage, thereby protecting the compressor 1.

[0155] A specific embodiment according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0156] The thermal management system includes an air conditioning module, a first heat exchange module, a second heat exchange module, a second heat exchanger 14, a fourth heat exchanger 15, and a third heat exchanger 24. The fourth heat exchanger 15 is used for heat exchange with the battery pack. The second heat exchanger 14 includes a first heat exchange flow path and a second heat exchange flow path. The third heat exchanger 24 includes a third heat exchange flow path and a fourth heat exchange flow path.

[0157] The air conditioning module includes a first refrigerant flow path, a compressor 1, an air conditioning condenser 2, an external condenser 5, a gas-liquid separator 6, and an air conditioning evaporator 17. The first refrigerant flow path includes a first heat exchange flow path and a third heat exchange flow path.

[0158] The second heat exchange module includes a refrigerator subsystem 41, a first driving pump 12, and a first heat exchanger 13. The refrigerator subsystem 41 includes a second heat exchange flow path.

[0159] The second heat exchange module includes a heat exchange circuit 42, a second driving pump 27, and a radiator 22. The heat exchange circuit 42 includes a fourth heat exchange flow path and the motor 26 for heat exchange with the motor 26.

[0160] Wherein, the inlet of the compressor 1 is connected to the outlet of the gas-liquid separator 6, and the outlet of the gas-liquid separator 6 is communicated with the first end of the second heat exchanger 14 through a second control valve 7.

[0161] The outlet of the gas-liquid separator 6 is also communicated with the first end of the fourth heat exchanger 15 through an eighth control valve 8.

[0162] The outlet of the gas-liquid separator 6 is also communicated with the second end of the external condenser 5 through a sixth control valve 16; and is communicated with the second end of the third heat exchanger 24 through the sixth control valve 16. Wherein, a second one-way valve 28 for allowing the refrigerant to flow from the third heat exchanger 24 to the gas-liquid separator 6 is provided between the second end of the third heat exchanger 24 and the gas-liquid separator 6.

[0163] The outlet of the gas-liquid separator 6 is also connected to the first end of the air conditioning evaporator 17.

[0164] The outlet of the compressor 1 is connected to the inlet of the air conditioner condenser 2. The outlet of the compressor 1 is also connected to the first end of the second heat exchanger 14 through the first control valve 10. The outlet of the compressor 1 is also connected to the first end of the fourth heat exchanger 15 through the seventh control valve 9. And a first expansion valve 11 is provided between the outlet of the compressor 1 and the first end of the fourth heat exchanger 15.

[0165] The outlet of the air conditioner condenser 2 is connected to the outlet of the outside vehicle condenser 5 through the third control valve 4. And a fifth expansion valve 3 is provided between the air conditioner condenser 2 and the outside vehicle condenser 5.

[0166] The outlet of the air conditioner condenser 2 is also connected to the second end of the second heat exchanger 14 through the fourth control valve 30. And a fifth expansion valve 3 and a fourth expansion valve 18 are provided between the air conditioner condenser 2 and the second heat exchanger 14.

[0167] The outlet of the air conditioner condenser 2 is also connected to the first end of the third heat exchanger 24 through the fourth control valve 30. And a fifth expansion valve 3 is provided between the air conditioner condenser 2 and the third heat exchanger 24.

[0168] Among them, the second end of the second heat exchanger 14 is connected to the first end of the third heat exchanger 24. And a fourth expansion valve 18 is provided between the second heat exchanger 14 and the third heat exchanger 24. The second end of the fourth heat exchanger 15 is connected between the second heat exchanger 14 and the third heat exchanger 24 through the fifth control valve 21. And a second expansion valve 19 is provided between the second end of the fourth heat exchanger 15 and the second heat exchanger 14 and the third heat exchanger 24.

[0169] The outlet of the outside vehicle condenser 5 is connected to the second end of the second heat exchanger 14 and the second end of the fourth heat exchanger 15. And a first one-way valve 25 that enables the refrigerant to flow unidirectionally from the outside vehicle condenser 5 to the second heat exchanger 14 or the fourth heat exchanger 15 is provided between the outlet of the outside vehicle condenser 5 and the second heat exchanger 14 and the fourth heat exchanger 15.

[0170] The outlet of the outside vehicle condenser 5 is also connected to the first end of the third heat exchanger 24. And a first one-way valve 25 that enables the refrigerant to flow unidirectionally from the outside vehicle condenser 5 to the third heat exchanger 24 is provided between the outside vehicle condenser 5 and the third heat exchanger 24.

[0171] The outlet of the outside vehicle condenser 5 is also connected to the second end of the air conditioner evaporator 17. And a third expansion valve 20 is provided between the outside vehicle condenser 5 and the air conditioner evaporator 17.

[0172] The following combines Figures 2 - 34 ( Figures 2 - 34 The red lines in it indicate the conducting pipelines), and through Figure 1 the embodiments shown describe the usage scenarios (i.e., the achievable vehicle thermal management requirements) of the vehicle thermal management system of the embodiments of the present application.

[0173] Scenario 1: Air conditioner heating

[0174] Refer to Figure 2 , in the single air conditioner heating scenario, control the vehicle thermal management system to execute Cycle 1. Specifically, control the third port c and the fourth port b of the multi-way valve 29 to be connected, so that the heat exchange circuit 42 circulates independently, and control the second drive pump 27 to start, so that the heat exchange medium in the heat exchange circuit 42 circulates, so that the heat exchange medium can absorb the heat generated by the motor 26 when flowing through the motor 26.

[0175] Control the fifth expansion valve 3, the second one-way valve 28, and the sixth control valve 16 to open, close other valves, and control the compressor 1 to start, so that the refrigerant in the first refrigerant flow path flows through the compressor 1 - air conditioner condenser 2 - fifth expansion valve 3 - third heat exchanger 24 - second one-way valve 28 - sixth control valve 16 - gas-liquid separator 6 - compressor 1 in sequence for circulation.

[0176] In this scenario, refer to Figure 2 , the compressor 1 - air conditioner condenser 2 - fifth expansion valve 3 - third heat exchanger 24 - second one-way valve 28 - sixth control valve 16 - gas-liquid separator 6 - compressor 1 is a refrigerant circuit. The high-temperature and high-pressure gaseous refrigerant flowing out from the outlet of the compressor 1 flows through the air conditioner condenser 2, and the high-temperature refrigerant condenses in the air conditioner condenser 2 to release heat to the passenger compartment to achieve heating of the passenger compartment. The refrigerant flowing out from the outlet of the air conditioner condenser 2 becomes a low-temperature and low-pressure refrigerant after throttling and pressure reduction by the fifth expansion valve 3. When the low-temperature and low-pressure refrigerant flows through the third heat exchange flow path of the third heat exchanger 24, it can exchange heat with the heat exchange medium in the fourth heat exchange flow path, and the refrigerant flowing out from the outlet of the third heat exchange flow path returns to the compressor 1 through the gas-liquid separator 6 for circulation. Thus, in the above single air conditioner heating scenario, the refrigerant can absorb heat from the heat exchange medium in the fourth heat exchange flow path in the third heat exchange flow path and release the heat to the passenger compartment through the air conditioner condenser 11, thereby realizing heating of the passenger compartment to utilize the heat generated by the motor 26.

[0177] Scenario 2: Single air conditioner cooling

[0178] Refer to Figure 3 , in the single air conditioner cooling scenario, control the vehicle thermal management system to execute Cycle 2. Specifically, control the fifth expansion valve 3, the third solenoid valve 4, and the third expansion valve 20 to open, close other valves, and control the compressor 1 to start, so that the refrigerant of the air conditioner module 130 flows through the compressor 1 - air conditioner condenser 2 - fifth expansion valve 3 - third solenoid valve 4 - external condenser 5 - third expansion valve 20 - air conditioner evaporator 17 - gas-liquid separator 6 - compressor 1 in sequence for circulation.

[0179] In this scenario, refer toFigure 3 , the compressor 1 - the air-conditioning condenser 2 - the fifth expansion valve 3 - the third solenoid valve 4 - the out-of-vehicle condenser 5 - the third expansion valve 20 - the air-conditioning evaporator 17 - the gas-liquid separator 6 - the compressor 1 form a refrigerant circuit. The high-temperature and high-pressure gaseous refrigerant flowing out of the outlet of the compressor 1 flows through the air-conditioning condenser 2, and the high-temperature refrigerant condenses and releases heat in the air-conditioning condenser 2. The refrigerant flowing out of the outlet of the air-conditioning condenser 2 becomes a low-temperature and low-pressure refrigerant after throttling and pressure reduction by the fifth expansion valve 3. The refrigerant flowing out of the fifth expansion valve 3 can be further processed by the out-of-vehicle condenser 5 and the third expansion valve 20 to become a low-temperature and low-pressure refrigerant. The low-temperature and low-pressure refrigerant flows through the air-conditioning evaporator 17 and vaporizes by absorbing heat in the air-conditioning evaporator 17 to absorb the heat in the passenger compartment, realizing the refrigeration of the passenger compartment. The refrigerant flowing out of the outlet of the air-conditioning evaporator 17 is circulated back to the compressor 1 through the gas-liquid separator 6. Thus, in the above-mentioned passenger compartment refrigeration mode, the refrigerant can absorb the heat in the passenger compartment in the in-vehicle evaporator 63 and release the heat to the outside through the out-of-vehicle condenser 61, thereby realizing the refrigeration of the passenger compartment and improving the user experience.

[0180] Scenario 3: Battery pack heating

[0181] See Figure 4 , in the single battery pack heating scenario, control the vehicle thermal management system to execute Loop 3. Specifically, control the third port c and the fourth port b of the multi-way valve 29 to be connected, so that the heat exchange circuit 42 circulates independently, and control the second drive pump 27 to start, so that the heat exchange medium in the heat exchange circuit 42 circulates, so that the heat exchange medium can absorb the heat generated by the motor 26 when flowing through the motor 26.

[0182] Control the seventh control valve 9, the first expansion valve 11, the second expansion valve 19, the fifth control valve 21, the second one-way valve 28 - the sixth control valve 16 to open, and other valves to close, and control the compressor 1 to start, so that the refrigerant flows through the compressor 1 - the seventh control valve 9 - the first expansion valve 11 - the fourth heat exchanger 15 - the second expansion valve 19 - the fifth control valve 21 - the third heat exchanger 24 - the second one-way valve 28 - the sixth control valve 16 - the gas-liquid separator 6 - the compressor 1 in sequence for circulation.

[0183] In this scenario, see Figure 4, the compressor 1 - the seventh control valve 9 - the first expansion valve 11 - the fourth heat exchanger 15 - the second expansion valve 19 - the fifth control valve 21 - the third heat exchanger 24 - the second check valve 28 - the sixth control valve 16 - the gas-liquid separator 6 - the compressor 1 form a refrigerant circuit. The high-temperature and high-pressure gaseous refrigerant flowing out of the outlet of the compressor 1 flows through the fourth heat exchanger 15, and the high-temperature refrigerant condenses and releases heat in the fourth heat exchanger 15 to release the heat to the battery pack to increase the temperature of the battery pack, so that the battery pack can operate at an appropriate temperature, thereby improving the service life of the battery pack. The refrigerant flowing out of the outlet of the fourth heat exchanger 15 becomes a low-temperature and low-pressure refrigerant after throttling and depressurizing by the second expansion valve 19. The low-temperature and low-pressure refrigerant flowing through the third heat exchange flow path can absorb the heat of the heat exchange medium in the heat exchange circuit 42, and the refrigerant flowing out of the outlet of the third heat exchange flow path finally returns to the compressor 1 through the gas-liquid separator 6. In the above single battery pack heating scenario, the refrigerant can absorb heat in the third heat exchanger 24 and release the heat to the fourth heat exchanger 15 to increase the temperature of the battery pack. Especially in the application scenario of cold start in a low-temperature environment, heating the battery pack can make the battery pack operate at an appropriate temperature, improve the safety and stability of the battery pack, and extend the service life of the battery pack.

[0184] See Figure 5 , in the single battery pack cooling scenario, control the vehicle thermal management system to execute cycle 4. Specifically, the fifth expansion valve 3, the third solenoid valve 4, the first check valve 25, the second expansion valve 19, the first expansion valve 11, and the eighth control valve 8 can be controlled to open, other valves are closed, and the compressor 1 is controlled to start, so that the refrigerant flows through the compressor 1 - the air-conditioning condenser 2 - the fifth expansion valve 3 - the third solenoid valve 4 - the out-of-vehicle condenser 5 - the first check valve 25 - the second expansion valve 19 - the fourth heat exchanger 15 - the first expansion valve 11 - the eighth control valve 8 - the gas-liquid separator 6 - the compressor 1 in sequence for circulation.

[0185] In this scenario, see Figure 5, Compressor 1 - Air conditioner condenser 2 - Fifth expansion valve 3 - Third solenoid valve 4 - Outdoor condenser 5 - First check valve 25 - Second expansion valve 19 - Fourth heat exchanger 15 - First expansion valve 11 - Eighth control valve 8 - Gas-liquid separator 6 - Compressor 1 forms a refrigerant circuit. The high-temperature and high-pressure gaseous refrigerant flowing out of the outlet of Compressor 1 flows through the air conditioner condenser 2, and the high-temperature refrigerant condenses and releases heat in the air conditioner condenser 2. The refrigerant flowing out of the outlet of the air conditioner condenser 2 becomes a low-temperature and low-pressure refrigerant after passing through the throttling and pressure reduction of the fifth expansion valve 3. The refrigerant flowing out of the fifth expansion valve 3 can be further processed by the outdoor condenser 5 and the second expansion valve 19 to become a low-temperature and low-pressure refrigerant. The low-temperature and low-pressure refrigerant absorbs heat and vaporizes when flowing through the fourth heat exchanger 15 to absorb the heat in the battery pack, realizing the refrigeration of the battery pack. After the refrigerant flowing out of the outlet of the fourth heat exchanger 15 passes through the throttling and pressure reduction of the first expansion valve 11, it circulates back to Compressor 1 through the gas-liquid separator 6. Thus, in the above battery pack refrigeration scenario, the refrigerant can absorb the heat in the battery pack in the fourth heat exchanger 15 and release the heat to the outside through the outdoor condenser 5, thereby realizing the refrigeration of the battery pack, enabling the battery pack to work at an appropriate temperature and extending the service life of the battery pack.

[0186] Scenario Five: Heating the refrigerator

[0187] In the single refrigerator heating scenario, refer to Figure 6 , if the temperature of the heat transfer medium in the heat exchange circuit 42 is less than the first liquid temperature threshold (such as 50°C), and the ambient temperature of the vehicle is less than the first ambient temperature threshold (such as 5°C), it indicates that directly heating the refrigerator through the heat transfer medium in the heat exchange circuit 42 has poor effect, and the ambient temperature is not high, and it is basically impossible to absorb heat from the outdoor environment. Therefore, the refrigerator is heated by the heat exchange between the refrigerant and the refrigerator subsystem 41. At this time, control the vehicle thermal management system to execute cycle 5. Specifically, the first port a of the multi-way valve 29 can be controlled to be connected to the second port d, and the third port c to the fourth port b, so that the refrigerator subsystem 41 and the heat exchange circuit 42 circulate independently, and control the first drive pump 12 and the second drive pump 27 to start, so that the heat transfer medium in the refrigerator subsystem 41 and the heat exchange circuit 42 circulates, and control the compressor 1 to start, so that the refrigerant flows through Compressor 1 - First solenoid valve 10 - Second heat exchanger 14 - Fourth expansion valve 18 - Third heat exchanger 24 - Second check valve 28 - Sixth control valve 16 - Gas-liquid separator 6 - Compressor 1 in sequence for circulation.

[0188] Specifically, refer to Figure 6The refrigerant circuit consists of compressor 1, first solenoid valve 10, second heat exchanger 14, fourth expansion valve 18, third heat exchanger 24, second check valve 28, sixth control valve 16, gas-liquid separator 6, and compressor 1. The high-temperature, high-pressure gaseous refrigerant flowing out of the outlet of compressor 1 flows through the first heat exchange path of the second heat exchanger 14. The heat exchange medium in the refrigerator subsystem 41 absorbs the heat from the high-temperature, high-pressure refrigerant, heating the refrigerator.

[0189] The high-temperature and high-pressure refrigerant is converted into a low-temperature and low-pressure refrigerant. The low-temperature and low-pressure refrigerant flows through the third heat exchange path of the third heat exchanger 24, which can absorb the heat of the heat exchange medium in the heat exchange circuit 42, and then absorb the waste heat generated by the motor 26 to achieve cooling of the motor 26.

[0190] See also Figure 7 If the temperature of the heat exchange medium in heat exchange circuit 42 is greater than or equal to the first liquid temperature threshold, the refrigerator can be heated directly via the heat exchange medium in heat exchange circuit 42, and the vehicle thermal management system is controlled to execute loop 6. Specifically, the first port a of the multi-way valve 29 is connected to the fourth port b, and the third port c is connected to the second port d, thereby connecting the refrigerator subsystem 41 and the heat exchange circuit 42. The first drive pump 12 and the second drive pump 27 are then activated to circulate the heat exchange medium in the refrigerator subsystem 41 and the heat exchange circuit 42. At this time, the heat exchange medium in the heat exchange circuit 42 can circulate into the refrigerator subsystem 41, heating the refrigerator, thereby rationally utilizing the heat generated by the motor 26 without consuming additional energy.

[0191] See also Figure 8, if the temperature of the heat exchange medium in the heat exchange circuit 42 is less than the first liquid temperature threshold and the ambient temperature is greater than or equal to the first ambient temperature threshold, it indicates that heating the refrigerator directly through the heat exchange medium in the heat exchange circuit 42 has poor effect. Therefore, the refrigerator is heated by the air conditioning module 130. At the same time, since the ambient temperature is relatively high, heat can also be absorbed from the vehicle exterior environment. At this time, the vehicle thermal management system is controlled to execute cycle 7. Specifically, the first port a and the second port d of the multi-way valve 29 can be controlled to be connected, and the third port c and the fourth port b are connected, so that the refrigerator subsystem 41 and the heat exchange circuit 42 are independently circulated. The first driving pump 12 and the second driving pump 27 are controlled to start, so that the heat exchange medium in the refrigerator subsystem 41 and the heat exchange circuit 42 circulates. The first solenoid valve 10, the fourth expansion valve 18, the second check valve 28, the sixth control valve 16, the fourth control valve 30, and the third solenoid valve 4 are controlled to open, and other valves are closed. The compressor 1 is controlled to start, so that the refrigerant flows through the compressor 1 - the first solenoid valve 10 - the second heat exchanger 14 - the fourth expansion valve 18 - the third heat exchanger 24 - the second check valve 28 - the sixth control valve 16 - the gas-liquid separator 6 - the compressor 1 in sequence for circulation, and flows through the compressor 1 - the first solenoid valve 10 - the second heat exchanger 14 - the fourth expansion valve 18 - the fourth control valve 30 - the third solenoid valve 4 - the vehicle exterior condenser 5 - the sixth control valve 16 - the gas-liquid separator 6 - the compressor 1 in sequence for circulation.

[0192] Specifically, compared with Figure 6 , Figure 8 a refrigerant circuit of the compressor 1 - the first solenoid valve 10 - the second heat exchanger 14 - the fourth expansion valve 18 - the fourth control valve 30 - the third solenoid valve 4 - the vehicle exterior condenser 5 - the sixth control valve 16 - the gas-liquid separator 6 - the compressor 1 is also added. The high-temperature and high-pressure gaseous refrigerant flowing out from the outlet of the compressor 1 flows through the second heat exchanger 14. The high-temperature refrigerant releases heat in the second heat exchanger 14 and becomes a low-temperature and low-pressure refrigerant. The low-temperature and low-pressure refrigerant can absorb the heat of the vehicle exterior environment when flowing through the vehicle exterior condenser 5. The refrigerant flowing out from the outlet of the vehicle exterior condenser 5 finally returns to the compressor 1 through the gas-liquid separator 6. Thus, the refrigerant can exchange heat with the heat exchange medium in the refrigerator subsystem 41 in the second heat exchanger 14 to release heat to the refrigerator to increase the temperature of the refrigerator, meeting the heating requirement of the refrigerator. Moreover, not only the energy of the heat exchange medium in the heat exchange circuit 42 is utilized, but also the energy of the vehicle exterior environment is utilized, and the heating effect is better.

[0193] Scenario Six: Single Refrigerator Refrigeration

[0194] See Figure 9, in the single-refrigerator refrigeration scenario, control the vehicle thermal management system to execute Loop 8. Specifically, the first port a of the multi-way valve 29 can be controlled to be connected to the second port d to enable the independent circulation of the refrigerator subsystem 41, and the first drive pump 12 can be controlled to start to make the heat exchange medium in the refrigerator subsystem 41 circulate. In addition, the fifth expansion valve 3, the third solenoid valve 4, the first check valve 25, the fifth control valve 21, the fourth expansion valve 18, and the second control valve 7 are controlled to open, and other valves are closed. The compressor 1 is controlled to start, and the refrigerant flows through the compressor 1 - air-conditioning condenser 2 - fifth expansion valve 3 - third solenoid valve 4 - external condenser 5 - first check valve 25 - fifth control valve 21 - fourth expansion valve 18 - second heat exchanger 14 - second control valve 7 - gas-liquid separator 6 - compressor 1 in sequence for circulation, so as to achieve the refrigeration of the refrigerator through the first heat exchanger 13.

[0195] Specifically, refer to Figure 9 , the compressor 1 - air-conditioning condenser 2 - fifth expansion valve 3 - third solenoid valve 4 - external condenser 5 - first check valve 25 - fifth control valve 21 - fourth expansion valve 18 - second heat exchanger 14 - second control valve 7 - gas-liquid separator 6 - compressor 1 is a refrigerant circuit. The high-temperature and high-pressure gaseous refrigerant flowing out of the outlet of the compressor 1 flows through the air-conditioning condenser 2, and the high-temperature refrigerant condenses and releases heat in the air-conditioning condenser 2. The refrigerant flowing out of the outlet of the air-conditioning condenser 2 becomes a low-temperature and low-pressure refrigerant after throttling and pressure reduction by the fifth expansion valve 3. The refrigerant flowing out of the fifth expansion valve 3 can be further processed by the external condenser 5 and the fourth expansion valve 18 to become a low-temperature and low-pressure refrigerant. When the low-temperature and low-pressure refrigerant flows through the second heat exchanger 14, it absorbs heat and vaporizes to absorb the heat of the heat exchange medium in the refrigerator subsystem 41 through the second heat exchanger 14, so as to achieve the refrigeration of the refrigerator. The refrigerant flowing out of the second heat exchanger 14 circulates back to the compressor 1 through the gas-liquid separator 6. Thus, the refrigerant can absorb the heat in the heat exchange medium of the refrigerator subsystem 41 in the second heat exchanger 14, and then achieve the refrigeration of the refrigerator through the first heat exchanger 13 to meet the refrigeration demand of the refrigerator.

[0196] Scenario Seven: Air-conditioning Heating + Battery Pack Heating

[0197] Refer to Figure 10, in the scenario of air-conditioning heating + battery pack heating, control the vehicle thermal management system to execute Loop 9. Specifically, it can control the third port c of the multi-way valve 29 to be connected to the fourth port b, so that the heat exchange circuit 42 circulates independently, and control the second driving pump 27 to start, so that the heat exchange medium in the heat exchange circuit 42 circulates, and control the fifth expansion valve 3, the fourth control valve 30, the second check valve 28, the sixth control valve 16, the seventh control valve 9, the first expansion valve 11, the second expansion valve 19, and the fifth control valve 21 to open, and other valves to close, and control the compressor 1 to start, so that the refrigerant flows through the compressor 1 - air-conditioning condenser 2 - fifth expansion valve 3 - third heat exchanger 24 - second check valve 28 - sixth control valve 16 - gas-liquid separator 6 - compressor 1 in sequence for circulation to achieve heating of the passenger compartment; and flow through the compressor 1 - seventh control valve 9 - first expansion valve 11 - fourth heat exchanger 15 - second expansion valve 19 - fifth control valve 21 - third heat exchanger 24 - second check valve 28 - sixth control valve 16 - gas-liquid separator 6 - compressor 1 in sequence for circulation to achieve heat release of the refrigerant at the fourth heat exchanger 15, and then heat the battery pack. At the same time, it also realizes heat compensation for the refrigerant by using the heat generated by the motor 26, improving the energy utilization rate.

[0198] Scenario 8: Air-conditioning heating + battery pack cooling:

[0199] In the scenario of air-conditioning heating + battery pack cooling, refer to Figure 11 , if the battery pack cooling demand is low, such as the battery pack cooling gear is less than or equal to the first gear threshold (such as 1), then control the vehicle thermal management system to execute Loop 10. Specifically, it can control the third port c of the multi-way valve 29 to be connected to the fourth port b, so that the heat exchange circuit 42 circulates independently, and control the second driving pump 27 to start, so that the heat exchange medium in the heat exchange circuit 42 circulates, and control some valves to open, and control the compressor 1 to start, so that the refrigerant flows through the compressor 1 - air-conditioning condenser 2 - fifth expansion valve 3 - fourth control valve 30 - third heat exchanger 24 - second check valve 28 - first check valve 25 - second expansion valve 19 - fourth heat exchanger 15 - first expansion valve 11 - eighth control valve 8 - gas-liquid separator 6 - compressor 1 in sequence for circulation to achieve cooling of the battery pack by the refrigerant while realizing air-conditioning heating.

[0200] Refer to Figure 12 , if the battery pack cooling demand is high, such as the battery pack cooling gear is greater than the first gear threshold Loop 11, then compared with Figure 11, it also controls the refrigerant to flow through the compressor 1 - air conditioner condenser 2 - fifth expansion valve 3 - third solenoid valve 4 - outdoor condenser 5 - first check valve 25 - second expansion valve 19 - fourth heat exchanger 15 - first expansion valve 11 - eighth control valve 8 - gas-liquid separator 6 - compressor 1 in sequence for circulation. By increasing the condensation treatment of the outdoor condenser 5, the cooling requirements of the battery pack at higher gears can be met.

[0201] Scenario Nine: Air conditioner heating + refrigerator heating

[0202] In the scenario of air conditioner heating + refrigerator heating, refer to Figure 13 , if the temperature of the heat exchange medium in the heat exchange circuit 42 is less than the second liquid temperature threshold (such as 50 °C), then control the vehicle thermal management system to execute cycle 12. Specifically, it can control the first port a of the multi-way valve 29 to be connected to the second port d, and the third port c to be connected to the fourth port b, so that the refrigerator subsystem 41 and the heat exchange circuit 42 circulate independently, and control the first drive pump 12 and the second drive pump 27 to start, so that the heat exchange medium in the refrigerator subsystem 41 and the heat exchange circuit 42 circulates, and control some valves to open, and control the compressor 1 to start, so that the refrigerant flows through the compressor 1 - air conditioner condenser 2 - fifth expansion valve 3 - third heat exchanger 24 - second check valve 28 - sixth control valve 16 - gas-liquid separator 6 - compressor 1 in sequence for circulation to achieve heating of the passenger compartment; and flow through the compressor 1 - first solenoid valve 10 - second heat exchanger 14 - fourth expansion valve 18 - third heat exchanger 24 - second check valve 28 - sixth control valve 16 - gas-liquid separator 6 - compressor 1 in sequence for circulation to achieve heating of the refrigerator.

[0203] Refer to Figure 14 , if the temperature of the heat exchange medium in the heat exchange circuit 42 is greater than or equal to the second liquid temperature threshold, then control the vehicle thermal management system to execute cycle 13. Specifically, it can control the first port a of the multi-way valve 29 to be connected to the fourth port b, and the third port c to be connected to the second port d, so that the refrigerator subsystem 41 and the heat exchange circuit 42 are conducted, and control the first drive pump 12 and the second drive pump 27 to start, so that the heat exchange medium in the refrigerator subsystem 41 and the heat exchange circuit 42 flows through the first drive pump 12 - first heat exchanger 13 - ab end of the multi-way valve 29 - radiator - motor 26 - second drive pump 27 - third heat exchanger 24 - cd end of the multi-way valve 29 - second heat exchanger 14 - first drive pump 12 in sequence for circulation to achieve heating of the refrigerator by the heat exchange medium in the heat exchange circuit 42 through the first heat exchanger 13. And control some valves to open, and control the compressor 1 to start, so that the refrigerant flows through the compressor 1 - air conditioner condenser 2 - fifth expansion valve 3 - third heat exchanger 24 - second check valve 28 - sixth control valve 16 - gas-liquid separator 6 - compressor 1 in sequence for circulation to achieve heating of the passenger compartment. Compared with Figure 13In the shown example, the heat exchange medium in the heat exchange circuit 42 directly heats the refrigerator through the first heat exchanger 13, which can better utilize the vehicle energy and has a lower implementation complexity.

[0204] Scenario Ten: Air conditioner heating + refrigerator refrigeration

[0205] In the scenario of air conditioner heating + refrigerator refrigeration, refer to Figure 15 , if the air conditioner heating target temperature (which can be set by the user) is greater than or equal to the first air temperature threshold (such as 40°C, with a large heating demand), then control the vehicle thermal management system to execute Cycle 14. Specifically, control the first port a of the multi-way valve 29 to be connected to the second port d, and the third port c to be connected to the fourth port b, so that the refrigerator subsystem 41 and the heat exchange circuit 42 circulate independently. Control the first drive pump 12 and the second drive pump 27 to start, so that the heat exchange medium in the refrigerator subsystem 41 and the heat exchange circuit 42 circulates, and control some valves to open, and control the compressor 1 to start, so that the refrigerant flows through the compressor 1 - air conditioner condenser 2 - fifth expansion valve 3 - third heat exchanger 24 - second check valve 28 - sixth control valve 16 - gas-liquid separator 6 - compressor 1 in sequence for circulation to achieve air conditioner heating; and flow through the compressor 1 - air conditioner condenser 2 - fifth expansion valve 3 - fourth expansion valve 18 - second heat exchanger 14 - second control valve 7 - gas-liquid separator 6 - compressor 1 in sequence for circulation, and refrigerate the refrigerator through the first heat exchanger 13.

[0206] Refer to Figure 16 , if the air conditioner heating target temperature is less than the first air temperature threshold (with a small heating demand), then control the vehicle thermal management system to execute Cycle 15. Specifically, control the first port a of the multi-way valve 29 to be connected to the second port d, so that the refrigerator subsystem 41 circulates independently, and control the first drive pump 12 to start, so that the heat exchange medium in the refrigerator subsystem 41 circulates, and control some valves to open, and control the compressor 1 to start, so that the refrigerant flows through the compressor 1 - air conditioner condenser 2 - fifth expansion valve 3 - fourth expansion valve 18 - second heat exchanger 14 - second control valve 7 - gas-liquid separator 6 - compressor 1 in sequence for circulation. Compared with Figure 15 the shown example, since the heating demand is small, there is no need for the heat exchange medium in the heat exchange circuit 42 to exchange heat, and the control complexity is lower.

[0207] Scenario Eleven: Air conditioner refrigeration + battery pack heating

[0208] In the scenario of air conditioner refrigeration + battery pack heating, refer to Figure 17, control the vehicle thermal management system to execute Loop 16. Specifically, it can control the third port c of the multi-way valve 29 to be connected to the fourth port b, so that the heat exchange circuit 42 circulates independently, and control the second drive pump 27 to start, so that the heat exchange medium in the heat exchange circuit 42 circulates, and control some valves to open, and control the compressor 1 to start, so that the refrigerant flows through the compressor 1 - the seventh control valve 9 - the first expansion valve 11 - the fourth heat exchanger 15 - the second expansion valve 19 - the fifth control valve 21 - the third heat exchanger 24 - the second one-way valve 28 - the third expansion valve 20 - the air-conditioning evaporator 17 - the gas-liquid separator 6 - the compressor 1 in sequence for circulation. Through this refrigerant circuit, while realizing air-conditioning refrigeration, it can also heat the battery pack by using the fourth heat exchanger 15.

[0209] Scenario Twelve: Air-conditioning Refrigeration + Battery Pack Refrigeration

[0210] In the scenario of air-conditioning refrigeration + battery pack refrigeration, refer to Figure 18 , control the vehicle thermal management system to execute Loop 17. Specifically, it can control the compressor 1 to start, so that the refrigerant flows through the compressor 1 - the air-conditioning condenser 2 - the fifth expansion valve 3 - the third solenoid valve 4 - the out-of-vehicle condenser 5 - the first one-way valve 25 - the second expansion valve 19 - the fourth heat exchanger 15 - the first expansion valve 11 - the eighth control valve 8 - the gas-liquid separator 6 - the compressor 1 in sequence for circulation to realize cooling the battery pack by using the fourth heat exchanger 15; and flow through the compressor 1 - the air-conditioning condenser 2 - the fifth expansion valve 3 - the third solenoid valve 4 - the out-of-vehicle condenser 5 - the third expansion valve 20 - the air-conditioning evaporator 17 - the gas-liquid separator 6 - the compressor 1 in sequence for circulation to realize passenger compartment refrigeration.

[0211] Scenario Thirteen: Air-conditioning Refrigeration + Refrigerator Heating

[0212] In the scenario of air-conditioning refrigeration + refrigerator heating, refer to Figure 19, control the vehicle thermal management system to execute cycle 18. Specifically, it can control the first port a of the multi-way valve 29 to be connected to the second port d, and the third port c to be connected to the fourth port b, so that the refrigerator subsystem 41 and the heat exchange circuit 42 circulate independently, and control the first drive pump 12 and the second drive pump 27 to start, so that the heat exchange medium in the refrigerator subsystem 41 and the heat exchange circuit 42 circulates, and control some valves to open, and control the compressor 1 to start, so that the refrigerant flows through the compressor 1 - the first solenoid valve 10 - the second heat exchanger 14 - the fourth expansion valve 18 - the third solenoid valve 4 - the vehicle exterior condenser 5 - the third expansion valve 20 - the air-conditioning evaporator 17 - the gas-liquid separator 6 - the compressor 1 in sequence for circulation, and flows through the compressor 1 - the first solenoid valve 10 - the second heat exchanger 14 - the fourth expansion valve 18 - the third heat exchanger 24 - the second check valve 28 - the third expansion valve 20 - the air-conditioning evaporator 17 - the gas-liquid separator 6 - the compressor 1 in sequence for circulation. Both refrigerant circuits can achieve refrigerator heating and occupant compartment cooling.

[0213] Scenario Fourteen: Air-conditioning Refrigeration + Refrigerator Refrigeration

[0214] In the scenario of air-conditioning refrigeration + refrigerator refrigeration, refer to Figure 20 , control the vehicle thermal management system to execute cycle 19. Specifically, it can control the first port a of the multi-way valve 29 to be connected to the second port d, so that the refrigerator subsystem 41 circulates independently, and control the first drive pump 12 to start, so that the heat exchange medium in the refrigerator subsystem 41 circulates, and control some valves to open, and control the compressor 1 to start, so that the refrigerant flows through the compressor 1 - the air-conditioning condenser 2 - the fifth expansion valve 3 - the third solenoid valve 4 - the vehicle exterior condenser 5 - the first check valve 25 - the fifth control valve 21 - the fourth expansion valve 18 - the second heat exchanger 14 - the second control valve 7 - the gas-liquid separator 6 - the compressor 1 in sequence for circulation to achieve refrigerator refrigeration; and flows through the compressor 1 - the air-conditioning condenser 2 - the fifth expansion valve 3 - the third solenoid valve 4 - the vehicle exterior condenser 5 - the third expansion valve 20 - the air-conditioning evaporator 17 - the gas-liquid separator 6 - the compressor 1 in sequence for circulation to achieve occupant compartment refrigeration.

[0215] Scenario Fifteen: Battery Pack Heating + Refrigerator Heating

[0216] In the scenario of battery pack heating + refrigerator heating, refer to Figure 21, control the vehicle thermal management system to execute cycle 20. Specifically, it can control the first port a of the multi-way valve 29 to be connected to the second port d, and the third port c to be connected to the fourth port b, so that the refrigerator subsystem 41 and the heat exchange circuit 42 circulate independently, and control the first drive pump 12 and the second drive pump 27 to start, so that the heat exchange medium in the refrigerator subsystem 41 and the heat exchange circuit 42 circulates, and control some valves to open, and control the compressor 1 to start, so that the refrigerant flows through the compressor 1 - the seventh control valve 9 - the first expansion valve 11 - the fourth heat exchanger 15 - the second expansion valve 19 - the fifth control valve 21 - the third heat exchanger 24 - the second one-way valve 28 - the sixth control valve 16 - the gas-liquid separator 6 - the compressor 1 in turn for circulation, and use the fourth heat exchanger 15 to heat the battery pack; and flow through the compressor 1 - the first solenoid valve 10 - the second heat exchanger 14 - the fourth expansion valve 18 - the third heat exchanger 24 - the second one-way valve 28 - the sixth control valve 16 - the gas-liquid separator 6 - the compressor 1 in turn for circulation to achieve refrigerator heating.

[0217] Scenario Sixteen: Battery Pack Heating + Refrigerator Cooling

[0218] In the scenario of battery pack heating + refrigerator cooling, refer to Figure 22 , control the vehicle thermal management system to execute cycle 21. Specifically, it can control the first port a of the multi-way valve 29 to be connected to the second port d, and the third port c to be connected to the fourth port b, so that the refrigerator subsystem 41 and the heat exchange circuit 42 circulate independently, and control the first drive pump 12 and the second drive pump 27 to start, so that the heat exchange medium in the refrigerator subsystem 41 and the heat exchange circuit 42 circulates, and control some valves to open, and control the compressor 1 to start, so that the refrigerant flows through the compressor 1 - the seventh control valve 9 - the first expansion valve 11 - the fourth heat exchanger 15 - the second expansion valve 19 - the fifth control valve 21 - the third heat exchanger 24 - the second one-way valve 28 - the sixth control valve 16 - the gas-liquid separator 6 - the compressor 1 in turn for circulation, and use the fourth heat exchanger 15 to heat the battery pack; and flow through the compressor 1 - the seventh control valve 9 - the first expansion valve 11 - the fourth heat exchanger 15 - the second expansion valve 19 - the fifth control valve 21 - the fourth expansion valve 18 - the second heat exchanger 14 - the second control valve 7 - the gas-liquid separator 6 - the compressor 1 in turn for circulation, and while using the fourth heat exchanger 15 to heat the battery pack, achieve refrigerator cooling.

[0219] Scenario Seventeen: Battery Pack Cooling + Refrigerator Heating

[0220] In the scenario of battery pack cooling + refrigerator heating, refer to Figure 23, if the battery pack cooling gear is less than or equal to the second gear threshold (e.g., 1, low cooling demand), then control the vehicle thermal management system to execute cycle 22. Specifically, it can control the first port a of the multi-way valve 29 to be connected to the second port d, and the third port c to be connected to the fourth port b, so that the refrigerator subsystem 41 and the heat exchange circuit 42 circulate independently, and control the first drive pump 12 and the second drive pump 27 to start, so that the heat exchange medium in the refrigerator subsystem 41 and the heat exchange circuit 42 circulates, and control some valves to open, and control the compressor 1 to start, so that the refrigerant flows through the compressor 1 - the first solenoid valve 10 - the second heat exchanger 14 - the fourth expansion valve 18 - the third heat exchanger 24 - the second check valve 28 - the first check valve 25 - the second expansion valve 19 - the fourth heat exchanger 15 - the first expansion valve 11 - the eighth control valve 8 - the gas-liquid separator 6 - the compressor 1 in turn for circulation, and at the same time use the fourth heat exchanger 15 to cool the battery pack and heat the refrigerator.

[0221] See Figure 24 , if the battery pack cooling gear is greater than the second gear threshold (high cooling demand), then control the vehicle thermal management system to execute cycle 23. Specifically, it can control the first port a of the multi-way valve 29 to be connected to the second port d, and the third port c to be connected to the fourth port b, so that the refrigerator subsystem 41 and the heat exchange circuit 42 circulate independently, and control the first drive pump 12 and the second drive pump 27 to start, so that the heat exchange medium in the refrigerator subsystem 41 and the heat exchange circuit 42 circulates, and control some valves to open, and control the compressor 1 to start, so that the refrigerant flows through the compressor 1 - the first solenoid valve 10 - the second heat exchanger 14 - the fourth expansion valve 18 - the out-of-vehicle condenser 5 - the first check valve 25 - the second expansion valve 19 - the fourth heat exchanger 15 - the first expansion valve 11 - the eighth control valve 8 - the gas-liquid separator 6 - the compressor 1 in turn for circulation, and flow through the compressor 1 - the first solenoid valve 10 - the second heat exchanger 14 - the fourth expansion valve 18 - the third heat exchanger 24 - the second check valve 28 - the first check valve 25 - the second expansion valve 19 - the fourth heat exchanger 15 - the first expansion valve 11 - the eighth control valve 8 - the gas-liquid separator 6 - the compressor 1 in turn for circulation. Compared with Figure 23 the shown example, this example realizes battery pack cooling and refrigerator heating through two refrigerant circuits at the same time, and can meet more battery pack cooling demands.

[0222] Scenario 18: Battery pack refrigeration + refrigerator refrigeration

[0223] In the scenario of battery pack refrigeration + refrigerator refrigeration, see Figure 25, control the vehicle thermal management system to execute cycle 24. Specifically, it can control the connection between the first port a and the second port d of the multi-way valve 29, so that the refrigerator subsystem 41 circulates independently, and control the first drive pump 12 to start, so that the heat exchange medium in the refrigerator subsystem 41 circulates, and control some valves to open, and control the compressor 1 to start, so that the refrigerant flows through the compressor 1 - air conditioner condenser 2 - fifth expansion valve 3 - third solenoid valve 4 - external condenser 5 - first check valve 25 - fifth control valve 21 - fourth expansion valve 18 - second heat exchanger 14 - second control valve 7 - gas-liquid separator 6 - compressor 1 in sequence for circulation to achieve refrigerator refrigeration; and flow through the compressor 1 - air conditioner condenser 2 - fifth expansion valve 3 - third solenoid valve 4 - external condenser 5 - first check valve 25 - second expansion valve 19 - fourth heat exchanger 15 - first expansion valve 11 - eighth control valve 8 - gas-liquid separator 6 - compressor 1 in sequence for circulation to cool the battery pack by using the fourth heat exchanger 15.

[0224] Scenario Nineteen: Air conditioner heating + battery pack heating + refrigerator heating

[0225] In the scenario of air conditioner heating + battery pack heating + refrigerator heating, refer to Figure 26 , control the vehicle thermal management system to execute cycle 25. Specifically, it can control the connection between the first port a and the second port d of the multi-way valve 29, and the connection between the third port c and the fourth port b, so that the refrigerator subsystem 41 and the heat exchange circuit 42 circulate independently, and control the first drive pump 12 and the second drive pump 27 to start, so that the heat exchange medium in the refrigerator subsystem 41 and the heat exchange circuit 42 circulates, and control some valves to open, and control the compressor 1 to start, so that the refrigerant flows through the compressor 1 - air conditioner condenser 2 - fifth expansion valve 3 - third heat exchanger 24 - second check valve 28 - sixth control valve 16 - gas-liquid separator 6 - compressor 1 in sequence for circulation to achieve occupant compartment heating; and flow through the compressor 1 - seventh control valve 9 - first expansion valve 11 - fourth heat exchanger 15 - second expansion valve 19 - fifth control valve 21 - third heat exchanger 24 - second check valve 28 - sixth control valve 16 - gas-liquid separator 6 - compressor 1 in sequence for circulation to heat the battery pack by using the fourth heat exchanger 15; and flow through the compressor 1 - first solenoid valve 10 - second heat exchanger 14 - fourth expansion valve 18 - third heat exchanger 24 - second check valve 28 - sixth control valve 16 - gas-liquid separator 6 - compressor 1 in sequence for circulation to achieve refrigerator heating.

[0226] Scenario Twenty: Air conditioner heating + battery pack heating + refrigerator refrigeration

[0227] In the scenario of air conditioner heating + battery pack heating + refrigerator refrigeration, refer to Figure 27, control the vehicle thermal management system to execute cycle 26. Specifically, it can control the first port a of the multi-way valve 29 to be connected to the second port d, and the third port c to be connected to the fourth port b, so that the refrigerator subsystem 41 and the heat exchange circuit 42 circulate independently, and control the first drive pump 12 and the second drive pump 27 to start, so that the heat exchange medium in the refrigerator subsystem 41 and the heat exchange circuit 42 circulates, and control some valves to open, and control the compressor 1 to start, so that the refrigerant flows through the compressor 1 - air conditioner condenser 2 - fifth expansion valve 3 - third heat exchanger 24 - second check valve 28 - sixth control valve 16 - gas-liquid separator 6 - compressor 1 in sequence for circulation to achieve heating of the passenger compartment; flow through the compressor 1 - air conditioner condenser 2 - fifth expansion valve 3 - fourth expansion valve 18 - second heat exchanger 14 - second control valve 7 - gas-liquid separator 6 - compressor 1 in sequence for circulation to achieve refrigeration of the refrigerator; flow through the compressor 1 - seventh control valve 9 - first expansion valve 11 - fourth heat exchanger 15 - second expansion valve 19 - fifth control valve 21 - third heat exchanger 24 - second check valve 28 - sixth control valve 16 - gas-liquid separator 6 - compressor 1 in sequence, and at the same time achieve heating of the passenger compartment and heat the battery pack using the fourth heat exchanger 15; and flow through the compressor 1 - seventh control valve 9 - first expansion valve 11 - fourth heat exchanger 15 - second expansion valve 19 - fifth control valve 21 - fourth expansion valve 18 - second heat exchanger 14 - second control valve 7 - gas-liquid separator 6 - compressor 1 in sequence, and at the same time heat the battery pack using the fourth heat exchanger 15 and refrigerate the refrigerator.

[0228] Scenario Twenty-One: Air conditioner heating + battery pack cooling + refrigerator heating

[0229] In the scenario of air conditioner heating + battery pack cooling + refrigerator heating, refer to Figure 28, if the cooling gear of the battery pack is less than or equal to the third gear threshold value (such as 1), the vehicle thermal management system is controlled to execute loop 27. Specifically, the first port a of the multi-way valve 29 can be controlled to be connected to the second port d, and the third port c to the fourth port b, so that the refrigerator subsystem 41 and the heat exchange circuit 42 circulate independently, and the first driving pump 12 and the second driving pump 27 are controlled to start, so that the heat exchange medium in the refrigerator subsystem 41 and the heat exchange circuit 42 circulates, and some valves are controlled to open, and the compressor 1 is controlled to start, so that the refrigerant flows through the compressor 1 - air conditioner condenser 2 - fifth expansion valve 3 - third heat exchanger 24 - second check valve 28 - first check valve 25 - second expansion valve 19 - fourth heat exchanger 15 - first expansion valve 11 - eighth control valve 8 - gas-liquid separator 6 - compressor 1 in sequence for circulation, while realizing heating of the passenger compartment and cooling the battery pack by using the fourth heat exchanger 15; and flowing through the compressor 1 - first solenoid valve 10 - second heat exchanger 14 - fourth expansion valve 18 - third heat exchanger 24 - second check valve 28 - first check valve 25 - second expansion valve 19 - fourth heat exchanger 15 - first expansion valve 11 - eighth control valve 8 - gas-liquid separator 6 - compressor 1 in sequence for circulation, while realizing heating of the passenger compartment, cooling the battery pack by using the fourth heat exchanger 15 and heating the refrigerator.

[0230] See Figure 29, if the battery pack cooling gear is greater than the third gear threshold (e.g., 1), then control the vehicle thermal management system to execute loop 28. Specifically, it can control the first port a of the multi-way valve 29 to be connected to the second port d, and the third port c to be connected to the fourth port b, so that the refrigerator subsystem 41 and the heat exchange circuit 42 circulate independently, and control the first drive pump 12 and the second drive pump 27 to start, so that the heat exchange medium in the refrigerator subsystem 41 and the heat exchange circuit 42 circulates, and control some valves to open, and control the compressor 1 to start, so that the refrigerant flows through the compressor 1 - air conditioner condenser 2 - fifth expansion valve 3 - third solenoid valve 4 - external condenser 5 - first check valve 25 - second expansion valve 19 - fourth heat exchanger 15 - first expansion valve 11 - eighth control valve 8 - gas-liquid separator 6 - compressor 1 in sequence for circulation, using the fourth heat exchanger 15 to cool the battery pack; flowing through the compressor 1 - air conditioner condenser 2 - fifth expansion valve 3 - third heat exchanger 24 - second check valve 28 - first check valve 25 - second expansion valve 19 - fourth heat exchanger 15 - first expansion valve 11 - eighth control valve 8 - gas-liquid separator 6 - compressor 1 in sequence for circulation, while realizing heating of the passenger compartment and using the fourth heat exchanger 15 to cool the battery pack; flowing through the compressor 1 - first solenoid valve 10 - second heat exchanger 14 - fourth expansion valve 18 - third solenoid valve 4 - external condenser 5 - first check valve 25 - second expansion valve 19 - fourth heat exchanger 15 - first expansion valve 11 - eighth control valve 8 - gas-liquid separator 6 - compressor 1 in sequence for circulation, while realizing refrigerator heating and using the fourth heat exchanger 15 to cool the battery pack; and flowing through the compressor 1 - first solenoid valve 10 - second heat exchanger 14 - fourth expansion valve 18 - third heat exchanger 24 - second check valve 28 - first check valve 25 - second expansion valve 19 - fourth heat exchanger 15 - first expansion valve 11 - eighth control valve 8 - gas-liquid separator 6 - compressor 1 in sequence for circulation, while realizing heating of the passenger compartment, using the fourth heat exchanger 15 to cool the battery pack and refrigerator heating. Compared with Figure 28 the shown example, this example additionally adds two refrigerant circuits to use the fourth heat exchanger 15 to cool the battery pack, which can meet greater battery pack cooling requirements.

[0231] Scenario Twenty-two: Air-conditioning heating + Battery pack refrigeration + Refrigerator refrigeration

[0232] In the scenario of air-conditioning heating + battery pack refrigeration + refrigerator refrigeration, refer to Figure 30, control the vehicle thermal management system to execute cycle 29. Specifically, it can control the first port a of the multi-way valve 29 to be connected to the second port d, so that the refrigerator subsystem 41 circulates independently, and control the first drive pump 12 to start, so that the heat exchange medium in the refrigerator subsystem 41 circulates, and control some valves to open, and control the compressor 1 to start, so that the refrigerant flows through the compressor 1 - air conditioner condenser 2 - fifth expansion valve 3 - third solenoid valve 4 - external condenser 5 - first check valve 25 - fifth control valve 21 - fourth expansion valve 18 - second heat exchanger 14 - second control valve 7 - gas-liquid separator 6 - compressor 1 in turn for circulation, while realizing refrigerator refrigeration and occupant compartment heating; flowing through the compressor 1 - air conditioner condenser 2 - fifth expansion valve 3 - third solenoid valve 4 - external condenser 5 - first check valve 25 - second expansion valve 19 - fourth heat exchanger 15 - first expansion valve 11 - eighth control valve 8 - gas-liquid separator 6 - compressor 1 in turn for circulation, while using the fourth heat exchanger 15 to cool the battery pack and heat the occupant compartment.

[0233] Scenario 23: Air conditioner refrigeration + battery pack heating + refrigerator heating

[0234] In the scenario of air conditioner refrigeration + battery pack heating + refrigerator heating, refer to Figure 31 , control the vehicle thermal management system to execute cycle 30. Specifically, it can control the first port a of the multi-way valve 29 to be connected to the second port d and the third port c to be connected to the fourth port b, so that the refrigerator subsystem 41 and the heat exchange circuit 42 circulate independently, and control the first drive pump 12 to start, so that the heat exchange medium in the refrigerator subsystem 41 circulates, and control some valves to open, and control the compressor 1 to start, so that the refrigerant flows through the compressor 1 - seventh control valve 9 - first expansion valve 11 - fourth heat exchanger 15 - second expansion valve 19 - fifth control valve 21 - third heat exchanger 24 - second check valve 28 - third expansion valve 20 - air conditioner evaporator 17 - gas-liquid separator 6 - compressor 1 in turn for circulation, while using the fourth heat exchanger 15 to heat the battery pack and cool the occupant compartment; flowing through the compressor 1 - first solenoid valve 10 - second heat exchanger 14 - fourth expansion valve 18 - third heat exchanger 24 - second check valve 28 - third expansion valve 20 - air conditioner evaporator 17 - gas-liquid separator 6 - compressor 1 in turn for circulation, while realizing refrigerator heating and occupant compartment cooling.

[0235] Scenario 24: Air conditioner refrigeration + battery pack heating + refrigerator refrigeration

[0236] In the scenario of air conditioner refrigeration + battery pack heating + refrigerator refrigeration, refer to Figure 32, control the vehicle thermal management system to execute cycle 31. Specifically, it can control the first port a of the multi-way valve 29 to be connected to the second port d, and the third port c to be connected to the fourth port b, so that the refrigerator subsystem 41 and the heat exchange circuit 42 circulate independently, and control the first drive pump 12 and the second drive pump 27 to start, so that the heat exchange medium in the refrigerator subsystem 41 and the heat exchange circuit 42 circulates, and control some valves to open, and control the compressor 1 to start, so that the refrigerant flows through the compressor 1 - the seventh control valve 9 - the first expansion valve 11 - the fourth heat exchanger 15 - the second expansion valve 19 - the fifth control valve 21 - the third heat exchanger 24 - the second one-way valve 28 - the third expansion valve 20 - the air-conditioning evaporator 17 - the gas-liquid separator 6 - the compressor 1 in turn for heat exchange, and at the same time use the fourth heat exchanger 15 to heat the battery pack and cool the passenger compartment; and flow through the compressor 1 - the seventh control valve 9 - the first expansion valve 11 - the fourth heat exchanger 15 - the second expansion valve 19 - the fifth control valve 21 - the fourth expansion valve 18 - the second heat exchanger 14 - the second control valve 7 - the gas-liquid separator 6 - the compressor 1 in turn for circulation, and at the same time use the fourth heat exchanger 15 to heat the battery pack and refrigerate the refrigerator.

[0237] Scenario Twenty-Five: Air-Conditioning Refrigeration + Battery Pack Refrigeration + Refrigerator Heating

[0238] In the scenario of air-conditioning refrigeration + battery pack refrigeration + refrigerator heating, refer to Figure 33 , control the vehicle thermal management system to execute cycle 32. Specifically, it can control the first port a of the multi-way valve 29 to be connected to the second port d, and the third port c to be connected to the fourth port b, so that the refrigerator subsystem 41 and the heat exchange circuit 42 circulate independently, and control the first drive pump 12 to start, so that the heat exchange medium in the refrigerator subsystem 41 circulates, and control some valves to open, and control the compressor 1 to start, so that the refrigerant flows through the compressor 1 - the first solenoid valve 10 - the second heat exchanger 14 - the fourth expansion valve 18 - the third solenoid valve 4 - the out-of-vehicle condenser 5 - the first one-way valve 25 - the second expansion valve 19 - the fourth heat exchanger 15 - the first expansion valve 11 - the eighth control valve 8 - the gas-liquid separator 6 - the compressor 1 in turn for circulation, and at the same time realize refrigerator heating and use the fourth heat exchanger 15 to cool the battery pack; flow through the compressor 1 - the first solenoid valve 10 - the second heat exchanger 14 - the fourth expansion valve 18 - the third solenoid valve 4 - the out-of-vehicle condenser 5 - the third expansion valve 20 - the air-conditioning evaporator 17 - the gas-liquid separator 6 - the compressor 1 in turn for circulation, and at the same time realize refrigerator heating and passenger compartment refrigeration.

[0239] Scenario Twenty-Six: Air-Conditioning Refrigeration + Battery Pack Refrigeration + Refrigerator Refrigeration

[0240] In the scenario of air-conditioning refrigeration + battery pack refrigeration + refrigerator refrigeration, refer to Figure 34, control the vehicle thermal management system to execute cycle 33. Specifically, it can control the first port a of the multi-way valve 29 to be connected to the second port d, and the third port c to be connected to the fourth port b, so that the refrigerator subsystem 41 and the heat exchange circuit 42 circulate independently, and control the first driving pump 12 to start, so that the heat exchange medium in the refrigerator subsystem 41 circulates, and control some valves to open, and control the compressor 1 to start, so that the refrigerant flows through the compressor 1 - air conditioner condenser 2 - fifth expansion valve 3 - third solenoid valve 4 - outside vehicle condenser 5 - third expansion valve 20 - air conditioner evaporator 17 - gas-liquid separator 6 - compressor 1 in sequence for circulation to achieve refrigeration in the passenger compartment; flow through the compressor 1 - air conditioner condenser 2 - fifth expansion valve 3 - third solenoid valve 4 - outside vehicle condenser 5 - first check valve 25 - second expansion valve 19 - fourth heat exchanger 15 - first expansion valve 11 - eighth control valve 8 - gas-liquid separator 6 - compressor 1 in sequence for circulation to cool the battery pack by using the fourth heat exchanger 15; and flow through the compressor 1 - air conditioner condenser 2 - fifth expansion valve 3 - third solenoid valve 4 - outside vehicle condenser 5 - first check valve 25 - fifth control valve 21 - fourth expansion valve 18 - second heat exchanger 14 - second control valve 7 - gas-liquid separator 6 - compressor 1 in sequence for circulation to achieve refrigeration of the refrigerator.

[0241] It should be noted that the above-mentioned thresholds can be calibrated as needed. For example, they can be calibrated in combination with vehicle models, vehicle usage scenarios, etc. Their values can be fixed or adjusted according to the actual vehicle needs. This application does not make any limitations. In addition, in the double-opening scenarios (including Scenarios Seven - Eighteen) and triple-opening scenarios (including Scenarios Nineteen - Twenty-Six), for the state of the refrigerant and the functions of each component in the cycle executed by the vehicle thermal management system, reference can be made to the corresponding descriptions in the above single-opening scenarios (including Scenarios One - Six).

[0242] The vehicle according to an embodiment of the present invention is described below. The vehicle according to an embodiment of the present invention includes the vehicle thermal management system according to the above embodiment of the present invention.

[0243] For the vehicle according to an embodiment of the present invention, by using the vehicle thermal management system according to the above embodiment of the present invention, the refrigerant in the compressor 1 and the air conditioner subsystem does not directly participate in the refrigeration or heating of the first heat exchanger 13, but exchanges heat between the refrigerant and the heat exchange medium in the refrigerator subsystem, and uses the heat exchange medium to achieve refrigeration or heating of the first heat exchanger 13, and further achieve refrigeration or heating of the refrigerator. In this way, while the refrigerator subsystem and the air conditioner subsystem share the compressor, it is also possible to use the refrigerant to achieve refrigeration or heating of other systems, covering various scenarios of the vehicle thermal management system.

[0244] Other components and operations of the vehicle according to an embodiment of the present invention are known to those of ordinary skill in the art and will not be described in detail here.

[0245] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more. In the description of the present invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween.

[0246] In the description of the present invention, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature has a higher horizontal height than the second feature.

[0247] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected" and "coupled" shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0248] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0249] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A vehicle thermal management system, characterized in that, Comprising: A compressor (1); An air-conditioning subsystem, the air-conditioning subsystem including an in-vehicle heat exchanger for regulating the temperature of the vehicle cabin and a first refrigerant flow path, the first refrigerant flow path being connected to the compressor (1) and the in-vehicle heat exchanger; A refrigerator subsystem (41), the refrigerator subsystem including a first heat exchanger (13) for regulating the temperature of the refrigerator, and the heat exchange medium within the refrigerator subsystem (41) being adapted to perform heat exchange with the refrigerant within the first refrigerant flow path.

2. The vehicle thermal management system according to claim 1, wherein It further includes a heat exchange circuit (42), the heat exchange circuit (42) being adapted to perform heat exchange with a motor (26).

3. The vehicle thermal management system according to claim 2, wherein The heat exchange circuit (42) includes a radiator (22) for performing heat exchange with the external environment.

4. The vehicle thermal management system according to claim 2, characterized in that, The refrigerator subsystem (41) and the heat exchange circuit (42) can be selectively connected.

5. The vehicle thermal management system according to claim 4, wherein, The heat exchange circuit (42) is adapted to perform heat exchange with the first refrigerant flow path.

6. The vehicle thermal management system according to claim 4, characterized in that, It includes a multi-way valve (29), the refrigerator subsystem (41) being connected to two ports of the multi-way valve (29), the heat exchange circuit (42) being connected to the other two ports of the multi-way valve (29), and the multi-way valve (29) being switched to enable the refrigerator subsystem (41) to be connected to the heat exchange circuit (42), or both the refrigerator subsystem (41) and the heat exchange circuit (42) to circulate independently.

7. The vehicle thermal management system according to claim 2, wherein, It further includes: A second heat exchanger (14), the second heat exchanger (14) including a first heat exchange flow path and a second heat exchange flow path that perform heat exchange with each other, the first refrigerant flow path including the first heat exchange flow path, and the refrigerator subsystem (41) including the second heat exchange flow path.

8. The vehicle thermal management system according to claim 7, wherein, The first end of the first heat exchange flow path is selectively connected to the suction port and the discharge port of the compressor (1), and the second end of the first heat exchange flow path is selectively connected to the suction port of the compressor (1).

9. The vehicle thermal management system according to claim 8, characterized in that, The first end of the first heat exchange flow path is selectively connected to the discharge port through a first control valve (10), and the first end of the first heat exchange flow path is selectively connected to the suction port through a second control valve (7).

10. The vehicle thermal management system according to claim 7, characterized in that, It further includes: A third heat exchanger (24), the third heat exchanger (24) including a third heat exchange flow path and a fourth heat exchange flow path that perform heat exchange with each other, the first refrigerant flow path including the third heat exchange flow path, and the heat exchange circuit (42) including the fourth heat exchange flow path.

11. The vehicle thermal management system according to claim 10, characterized in that, The first end of the third heat exchange flow path is selectively connected to the second end of the first heat exchange flow path and the discharge port of the compressor (1), and the second end of the third heat exchange flow path is selectively connected to the suction port of the compressor (1).

12. The vehicle thermal management system according to claim 10, characterized in that, The air-conditioning subsystem further includes: An out-of-vehicle condenser (5), the first end of the out-of-vehicle condenser (5) being selectively connected to the second end of the first heat exchange flow path and the discharge port of the compressor (1), and the second end of the out-of-vehicle condenser (5) being selectively connected to the suction port of the compressor (1) and the second end of the first heat exchange flow path.

13. The vehicle thermal management system according to claim 12, characterized in that, The first end of the external condenser (5) is selectively communicable with the exhaust port through a third control valve (4). The first end of the external condenser (5) is selectively communicable with the second end of the first heat exchange flow path through a fourth control valve (30). The second end of the external condenser (5) is selectively connectable to the second end of the first heat exchange flow path through a fifth control valve (21).

14. The vehicle thermal management system according to claim 12, wherein, The in-vehicle heat exchanger includes an air-conditioning condenser (2). The first end of the air-conditioning condenser (2) is connected to the exhaust port of the compressor (1). The second end of the air-conditioning condenser (2) is selectively connectable to the second end of the first heat exchange flow path, the first end of the third heat exchange flow path, and the first end of the external condenser (5).

15. The vehicle thermal management system according to claim 12, characterized in that, It further includes a fourth heat exchanger (15) for heat exchange with the battery pack. The first end of the fourth heat exchanger (15) is selectively connectable to the suction port and the exhaust port of the compressor (1). The second end of the fourth heat exchanger (15) is selectively connectable to the second end of the external condenser (5), the second end of the first heat exchange flow path, the first end of the third heat exchange flow path, and the second end of the third heat exchange flow path.

16. The vehicle thermal management system according to claim 15, characterized in that, A first expansion valve (11) is connected in series at the first end of the fourth heat exchanger (15).

17. The vehicle thermal management system according to claim 16, wherein, A second expansion valve (19) is connected in series at the second end of the fourth heat exchanger (15).

18. The vehicle thermal management system according to claim 12, characterized in that, The in-vehicle heat exchanger includes an air-conditioning evaporator (17). The first end of the air-conditioning evaporator (17) is connected to the suction port of the compressor (1). The second end of the air-conditioning evaporator (17) is selectively connectable to the second end of the external condenser (5) and the second end of the third heat exchange flow channel.

19. The vehicle thermal management system according to claim 18, wherein, A third expansion valve (20) is connected in series at the end where the air-conditioning evaporator (17) is connected to the external condenser (5).

20. The vehicle thermal management system according to claim 3, wherein, It further includes: An electric fan (23) is provided corresponding to the radiator (22).

21. The vehicle thermal management system according to any one of claims 1-20, characterized in that, It further includes: A gas-liquid separator (6) is connected to the suction port of the compressor (1) for separating the liquid and gas components in the refrigerant.

22. The vehicle thermal management system according to any one of claims 1-20, characterized in that, The refrigerator subsystem (41) further includes a first driving pump (12) for driving the flow of the heat exchange medium in the refrigerator subsystem (41).

23. The vehicle thermal management system according to any one of claims 2-20, characterized in that, The heat exchange circuit (42) further includes a second driving pump (27) for driving the flow of the heat exchange medium in the heat exchange circuit (42).

24. A vehicle, characterized in that, It includes the vehicle thermal management system according to any one of claims 1-23.

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