Thermal management system and vehicle

Abstract

This invention discloses a thermal management system and a vehicle, relating to the vehicle field, including a first refrigerant circulation module; a second refrigerant circulation module; a first cooling water circulation module; a fifth cooling water channel of a fifth heat exchanger is provided between a first heater and a first drive component, the fifth cooling water channel being connected in parallel with the heater core; the second cooling water circulation module is provided with a first multi-way valve, a fourth cooling water channel of a fourth heat exchanger is provided between a first interface and a second interface; a sixth cooling water channel of the fifth heat exchanger is provided between a third interface and a fourth interface; a second drive component and a power battery are provided between the fourth interface and the fifth interface; a third drive component, a motor, and an electronic control unit are provided between the sixth interface and the seventh interface. Therefore, it can achieve staged heating of the passenger compartment and the power battery, with high integration, enabling the utilization of waste heat from the motor, electronic control unit, and power battery, improving energy utilization efficiency, achieving comprehensive utilization of thermal energy, and reducing energy consumption.

Description

Technical Field

[0001] This invention relates to the field of vehicles, and more particularly to a thermal management system and a vehicle. Background Technology

[0002] The existing vehicle thermal management system architecture is unreasonable, with low integration. It simply meets individual functional requirements, resulting in inefficient energy interaction and utilization, leading to high energy consumption and low energy efficiency. Furthermore, the existing thermal management system has a single heating mode, failing to achieve comprehensive utilization of the vehicle's thermal energy. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of this invention is to provide a thermal management system that has high integration, low energy consumption, and high energy utilization efficiency, enabling efficient and comprehensive energy utilization. This invention further proposes a vehicle. The thermal management system according to the invention includes: a first refrigerant circulation module, comprising: a first compressor, a first refrigerant flow channel of a first heat exchanger, a first expansion valve, and a second refrigerant flow channel of a second heat exchanger connected and forming a first loop;

[0004] The second refrigerant circulation module includes the following components connected to form a second loop: a second compressor, a third refrigerant flow channel of a third heat exchanger, a second expansion valve, and a fourth refrigerant flow channel of a fourth heat exchanger.

[0005] The first cooling water circulation module includes: a first driving component, a third cooling water channel of the third heat exchanger, a first cooling water channel of the first heat exchanger, a first heater, and a warm air core; a fifth cooling water channel of the fifth heat exchanger is provided between the first heater and the first driving component, and the fifth cooling water channel is connected in parallel with the warm air core.

[0006] The second cooling water circulation module is equipped with a first multi-way valve, which includes a first port, a second port, a third port, a fourth port, a fifth port, a sixth port, and a seventh port. A fourth cooling water flow channel of the fourth heat exchanger is provided between the first port and the second port, and the second cooling water flow channel of the second heat exchanger is connected in parallel with the fourth cooling water flow channel. A sixth cooling water flow channel of the fifth heat exchanger is provided between the third port and the fourth port, and the second heater is connected in parallel with the sixth cooling water flow channel. A second driving component and a power battery are provided between the fourth port and the fifth port. A third driving component, a motor, and an electronic control unit are provided between the sixth port and the seventh port.

[0007] The thermal management system according to the present invention can realize multiple heating modes and can realize step-by-step heating of the passenger compartment and the power battery. It has a high degree of integration and can realize the utilization of waste heat from the motor, electronic control and power battery. It can significantly improve the energy utilization efficiency of the thermal management system, realize the comprehensive utilization of thermal energy and reduce energy consumption.

[0008] In some examples of the present invention, the second refrigerant circulation module further includes: a first shut-off valve, a third expansion valve, a first condenser, a fourth expansion valve, and an evaporator. The first shut-off valve is disposed in the second circuit and located between the third refrigerant flow channel and the second expansion valve. The second compressor, the third expansion valve, the first condenser, the fourth expansion valve, and the evaporator form a fourth circuit. The first shut-off valve is connected in parallel with the first condenser.

[0009] In some examples of the present invention, the fourth expansion valve and the evaporator form a first branch, the second expansion valve and the fourth refrigerant channel form a second branch, and the first branch and the second branch are connected in parallel.

[0010] In some examples of the present invention, there are multiple evaporators and multiple fourth expansion valves, with each of the multiple evaporators and multiple fourth expansion valves corresponding one-to-one to form multiple first branches, and the multiple first branches are connected in parallel.

[0011] In some examples of the present invention, the first refrigerant circulation module further includes: a second shut-off valve, a fifth expansion valve, and a second condenser. The second shut-off valve is disposed in the first circuit and located between the first refrigerant flow path and the first expansion valve. The fifth expansion valve is connected in series with the second condenser to form a third branch. The third branch is connected between the first refrigerant flow path and the first expansion valve and is connected in parallel with the second shut-off valve.

[0012] In some examples of the present invention, the thermal management system further includes: multiple air supply components, multiple warm air cores, multiple warm air cores connected in parallel, and multiple warm air cores, multiple evaporators, and multiple air supply components corresponding one-to-one.

[0013] In some examples of the present invention, the first multi-port valve further includes an eighth port and a ninth port, and the second cooling water circulation module further includes a radiator, wherein the radiator is provided between the eighth port and the ninth port.

[0014] In some examples of the present invention, the first multi-port valve further includes a tenth interface, and the second cooling water circulation module further includes an expansion tank, the expansion tank being connected to the tenth interface.

[0015] In some examples of the present invention, the first cooling water circulation module further includes: a second multi-way valve, the second multi-way valve including: an eleventh interface, a twelfth interface, and a thirteenth interface, the eleventh interface being connected to the first heater, the twelfth interface being connected to the warm air core, and the thirteenth interface being connected to the fifth cooling water flow channel;

[0016] And / or, the second cooling water circulation module further includes: a third multi-way valve, the third multi-way valve including: a fourteenth interface, a fifteenth interface, and a sixteenth interface, the fourteenth interface being connected to the sixth cooling water flow channel, the fifteenth interface being connected to the fourth interface, and the sixteenth interface being connected to the second drive unit.

[0017] The vehicle according to the present invention includes the above-described thermal management system.

[0018] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is an architecture diagram of the thermal management system according to an embodiment of the present invention.

[0021] Figure label:

[0022] Thermal Management System 100;

[0023] First refrigerant circulation module 1; Second refrigerant circulation module 2;

[0024] First cooling water circulation module 3; Second cooling water circulation module 4;

[0025] First compressor 5; second compressor 6; first drive unit 7; second drive unit 8; third drive unit 9;

[0026] First heat exchanger 10; First refrigerant flow channel 11; First cooling water flow channel 12;

[0027] Second heat exchanger 20; Second refrigerant flow channel 21; Second cooling water flow channel 22;

[0028] Third heat exchanger 30; Third refrigerant flow channel 31; Third cooling water flow channel 32;

[0029] Fourth heat exchanger 40; Fourth refrigerant flow channel 41; Fourth cooling water flow channel 42;

[0030] Fifth heat exchanger 50; Fifth cooling water flow channel 51; Sixth cooling water flow channel 52;

[0031] Evaporator 54; First condenser 55; Second condenser 56;

[0032] First multi-way valve 60; First port 61; Second port 62; Third port 63; Fourth port 64; Fifth port 65; Sixth port 66; Seventh port 67; Eighth port 68; Ninth port 69; Tenth port 71;

[0033] Second multi-way valve 70; Eleventh port 72; Twelfth port 73; Thirteenth port 75;

[0034] Third multi-way valve 74; Fourteenth port 76; Fifteenth port 77; Sixteenth port 98;

[0035] First check valve 78; Second check valve 79; First shut-off valve 80; Second shut-off valve 81;

[0036] First heater 82; Second heater 83; Warm air core 84; Air supply component 85; Radiator 86; Cooling fan 87; Motor 88; Electrical control 89;

[0037] First expansion valve 91; Second expansion valve 92; Third expansion valve 93; Fourth expansion valve 94; Fifth expansion valve 95; Expansion tank 96; Heating tank 97;

[0038] First circuit 101; Second circuit 102; Third circuit 103; Fourth circuit 104; Fifth circuit 105; First branch 106; Second branch 107; Condenser fan 108; Power battery 109. Detailed Implementation

[0039] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein 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 limiting the present invention.

[0040] The following is for reference. Figure 1 A thermal management system 100 according to an embodiment of the present invention is described.

[0041] like Figure 1 As shown, the thermal management system 100 according to an embodiment of the present invention includes: a first refrigerant circulation module 1, a second refrigerant circulation module 2, a first cooling water circulation module 3, and a second cooling water circulation module 4.

[0042] The first refrigerant circulation module 1 includes the following components connected to and forming a first loop 101: a first compressor 5, a first refrigerant flow channel 11 of a first heat exchanger 10, a first expansion valve 91, and a second refrigerant flow channel 21 of a second heat exchanger 20.

[0043] As some embodiments of this application, the first compressor 5, the first refrigerant channel 11 of the first heat exchanger 10, the first expansion valve 91, and the second refrigerant channel 21 of the second heat exchanger 20 are sequentially connected by pipelines to form a first circuit 101. In other words, the first compressor 5, the first refrigerant channel 11 of the first heat exchanger 10, the first expansion valve 91, and the second refrigerant channel 21 of the second heat exchanger 20 are connected in series by pipelines to form a first circuit 101.

[0044] The second refrigerant circulation module 2 includes the following components connected to and forming the second circuit 102: a second compressor 6, a third refrigerant flow channel 31 of a third heat exchanger 30, a second expansion valve 92, and a fourth refrigerant flow channel 41 of a fourth heat exchanger 40.

[0045] As some embodiments of this application, the second compressor 6, the third refrigerant channel 31 of the third heat exchanger 30, the second expansion valve 92, and the fourth refrigerant channel 41 of the fourth heat exchanger 40 are sequentially connected by pipelines to form a second circuit 102. In other words, the second compressor 6, the third refrigerant channel 31 of the third heat exchanger 30, the second expansion valve 92, and the fourth refrigerant channel 41 of the fourth heat exchanger 40 are sequentially connected in series by pipelines to form a second circuit 102.

[0046] The refrigerant can flow in the first refrigerant circulation module 1 and the second refrigerant circulation module 2 for heat exchange. As some embodiments of this application, the refrigerant flowing in the first refrigerant circulation module 1 and the second refrigerant circulation module 2 is, for example, but not limited to, R134a (1,1,1,2-tetrafluoroethane) and R1234YF (2,3,3,3-tetrafluoropropylene).

[0047] The first cooling water circulation module 3 includes the following components connected to form the third loop 103: a first drive unit 7, a third cooling water channel 32 of a third heat exchanger 30, a first cooling water channel 12 of a first heat exchanger 10, a first heater 82, and a heater core 84; the first cooling water circulation module 3 also includes: a fifth heat exchanger 50, a fifth cooling water channel 51 of the fifth heat exchanger 50 is provided between the first heater 82 and the first drive unit 7, and the fifth cooling water channel 51 is connected in parallel with the heater core 84.

[0048] As some embodiments of this application, the first driving member 7, the third cooling water channel 32 of the third heat exchanger 30, the first cooling water channel 12 of the first heat exchanger 10, the first heater 82, and the warm air core 84 are connected in series through pipelines to form a third circuit 103. The fifth cooling water channel 51 of the fifth heat exchanger 50 is connected between the first heater 82 and the first driving member 7 through pipelines. Furthermore, the fifth cooling water channel 51 and the warm air core 84 are arranged in parallel.

[0049] The second cooling water circulation module 4 is equipped with a first multi-way valve 60, which includes: a first interface 61, a second interface 62, a third interface 63, a fourth interface 64, a fifth interface 65, a sixth interface 66, and a seventh interface 67. A fourth cooling water flow channel 42 of a fourth heat exchanger 40 is provided between the first interface 61 and the second interface 62. The second cooling water flow channel 22 of the second heat exchanger 20 is connected in parallel with the fourth cooling water flow channel 42. The second cooling water circulation module 4 also includes: a second heater 83. A sixth cooling water flow channel 52 of a fifth heat exchanger 50 is provided between the third interface 63 and the fourth interface 64. The second heater 83 and the sixth cooling water flow channel 52 are connected in parallel. The second cooling water circulation module 4 also includes: a second drive unit 8, a power battery 109, a third drive unit 9, a motor 88, and an electronic control unit 89. The second drive unit 8 and the power battery 109 are provided between the fourth interface 64 and the fifth interface 65. The third drive unit 9, the motor 88, and the electronic control unit 89 are provided between the sixth interface 66 and the seventh interface 67.

[0050] The first multi-way valve 60 includes: a first port 61, a second port 62, a third port 63, a fourth port 64, a fifth port 65, a sixth port 66, and a seventh port 67. As some embodiments of this application, the fourth cooling water channel 42 of the fourth heat exchanger 40 is connected between the first port 61 and the second port 62 via a pipeline. The second cooling water channel 22 of the second heat exchanger 20 is connected in parallel with the fourth cooling water channel 42 of the fourth heat exchanger 40.

[0051] The second cooling water circulation module 4 also includes a second heater 83. As some embodiments of this application, the sixth cooling water channel 52 of the fifth heat exchanger 50 is connected between the third interface 63 and the fourth interface 64 via a pipeline. The second heater 83 and the sixth cooling water channel 52 are arranged in parallel.

[0052] As some embodiments of this application, the second drive unit 8 and the power battery 109 are connected in series between the fourth interface 64 and the fifth interface 65 through pipelines, and the third drive unit 9, the motor 88, and the electronic control unit 89 are connected in series between the sixth interface 66 and the seventh interface 67 through pipelines.

[0053] As some embodiments of this application, the cooling medium flowing in the first cooling water circulation module 3 and the second cooling water circulation module 4 can be cooling water, which can be, but is not limited to, an aqueous solution of ethylene glycol, an aqueous solution of propylene glycol, etc.

[0054] The first refrigerant channel 11 can exchange heat with the first cooling water channel 12, the second refrigerant channel 21 can exchange heat with the second cooling water channel 22, the third refrigerant channel 31 can exchange heat with the third cooling water channel 32, the fourth refrigerant channel 41 can exchange heat with the fourth cooling water channel 42, and the fifth cooling water channel 51 can exchange heat with the sixth cooling water channel 52.

[0055] Specifically, the refrigerant in the first refrigerant channel 11 can exchange heat with the cooling water in the first cooling water channel 12 in the first heat exchanger 10, so that the first loop 101 and the third loop 103 can exchange heat. The refrigerant in the second refrigerant channel 21 can exchange heat with the cooling water in the second cooling water channel 22 in the second heat exchanger 20. The refrigerant in the third refrigerant channel 31 can exchange heat with the cooling water in the third cooling water channel 32 in the third heat exchanger 30, so that the second loop 102 and the third loop 103 can exchange heat. The refrigerant in the fourth refrigerant channel 41 can exchange heat with the cooling water in the fourth cooling water channel 42 in the fourth heat exchanger 40. The cooling water in the fifth cooling water channel 51 and the cooling water in the sixth cooling water channel 52 can exchange heat in the fifth heat exchanger 50.

[0056] The thermal management system 100 proposed in this application can have multiple heating operation modes. The specific operating states of the thermal management system 100 under multiple heating operation modes are described in detail below.

[0057] In the single-occupant cabin heating mode 1 (waste heat utilization and first heater 82 heating mode), in the first circuit 101, the refrigerant circulates sequentially along the first compressor 5, the first refrigerant flow channel 11 of the first heat exchanger 10, the first expansion valve 91, and the second refrigerant flow channel 21 of the second heat exchanger 20 under the action of the first compressor 5. In the second circuit 102, the refrigerant circulates sequentially along the second compressor 6, the third refrigerant flow channel 31 of the third heat exchanger 30, the second expansion valve 92, and the fourth refrigerant flow channel 41 of the fourth heat exchanger 40 under the action of the second compressor 6. In the third circuit 103, the cooling water circulates sequentially along the first drive unit 7, the third cooling water flow channel 32 of the third heat exchanger 30, the first cooling water flow channel 12 of the first heat exchanger 10, the first heater 82, and the heater core 84 under the action of the first drive unit 7.

[0058] The first multi-way valve 60 enables the second port 62 to be connected to the fourth port 64, the fifth port 65 to the sixth port 66, and the seventh port 67 to the first port 61. Under the action of the second driving member 8, the cooling water can sequentially flow through the second driving member 8, the power battery 109, the fifth port 65, the sixth port 66, the third driving member 9, the electronic control unit 89, the motor 88, the seventh port 67, and the first port 61, and circulate back to the second driving member 8 through the second cooling water flow channel 22 and the fourth cooling water flow channel 42.

[0059] Cooling water can remove waste heat from the motor 88, power battery 109, and electronic control unit 89 through heat exchange. It also exchanges heat with the refrigerant in the second cooling water channel 22 of the second heat exchanger 20 and the fourth cooling water channel 42 of the fourth heat exchanger 40, respectively, to transfer heat to the first circuit 101 and the second circuit 102. The refrigerant in the first circuit 101 flows through the first refrigerant channel 1 of the first heat exchanger 10. The refrigerant in the second circuit 102 can exchange heat with the cooling water in the third cooling water channel 32 in the third refrigerant channel 31 of the third heat exchanger 30 to transfer heat to the third circuit 103. The heat in the third circuit 103 can be transferred to the passenger compartment through the heater core 84 to realize the use of the waste heat of the motor 88, the electronic control 89, and the power battery 109 to heat the passenger compartment.

[0060] It should be noted that the waste heat utilization of the motor 88, the electronic control unit 89, and the power battery 109 can be selectively utilized based on the temperature of the motor 88, the power battery 109, and the electronic control unit 89. Specifically, the first multi-way valve 60 can selectively open the interfaces based on the temperature of the cooling water flowing through the motor 88, the power battery 109, and the electronic control unit 89, so that the waste heat of the motor 88, the electronic control unit 89, and the power battery 109 can be used for heating independently. As some embodiments of this application, the first multi-way valve 60 can connect the second interface 62 and the fourth interface 64 and connect the fifth interface 65 and the first interface 61. The cooling water can flow back to the second drive unit 8 through the second drive unit 8, the power battery 109, the fifth interface 65, and the first interface 61 in sequence under the action of the second drive unit 8, and through the second cooling water flow channel 22 and the fourth cooling water flow channel 42, so as to realize the use of the waste heat of the power battery 109 to heat the passenger compartment.

[0061] As some embodiments of this application, the first multi-way valve 60 enables the second port 62 to be connected to the sixth port 66 and the seventh port 67 to be connected to the first port 61. Under the action of the third driving member 9, the cooling water can flow sequentially along the third driving member 9, the electronic control 89, the motor 88, the seventh port 67, and the first port 61, and then flow back to the third driving member 9 through the second cooling water channel 22 and the fourth cooling water channel 42, so as to realize the use of the waste heat of the motor 88 and the electronic control 89 to heat the crew compartment.

[0062] Understandably, in this mode, the heating of the passenger compartment can be prioritized. If the heating demand of the passenger compartment is low, the second compressor 6 can be operated. The waste heat of at least one of the motor 88, electronic control 89, and power battery 109 can be transferred to the second circuit 102 through the fourth heat exchanger 40, and then transferred from the second circuit 102 to the third circuit 103 through the third heat exchanger 30, so as to achieve heating of the passenger compartment through the warm air core 84.

[0063] If the heating demand of the passenger compartment is moderate, both the second compressor 6 and the first compressor 5 can be operated. The waste heat of at least one of the motor 88, electronic control 89, and power battery 109 is transferred to the first circuit 101 and the second circuit 102 through the fourth heat exchanger 40 and the second heat exchanger 20. Then, the second circuit 102 transfers heat to the third circuit 103 through the third heat exchanger 30, and the first circuit 101 transfers heat to the third circuit 103 through the first heat exchanger 10, so as to achieve heating of the passenger compartment through the heater core 84.

[0064] If the heating demand of the passenger compartment is high, both the second compressor 6 and the first compressor 5 can be operated. The waste heat from at least one of the motor 88, electronic control unit 89, and power battery 109 is transferred to the first circuit 101 and the second circuit 102 through the fourth heat exchanger 40 and the second heat exchanger 20. Then, the second circuit 102 transfers heat to the third circuit 103 through the third heat exchanger 30, and the first circuit 101 transfers heat to the third circuit 103 through the first heat exchanger 10. The third circuit 103 is then heated by the first heater 82, so that the passenger compartment can be heated through the heater core 84. This satisfies the tiered heating demand of the passenger compartment.

[0065] Single-occupant compartment heating mode two (external air source and first heater 82 heating mode). In this mode, the first circuit 101 and the second circuit 102 can utilize external air source heat pump for heating. The heating principle of the first circuit 101 and the second circuit 102 can be understood as the working principle of a heat pump (compression-condensation-expansion-evaporation). Specifically, in the first circuit 101, the refrigerant is compressed into a high-temperature, high-pressure gaseous refrigerant by the first compressor 5, and then flows through the first refrigerant channel 11 of the first heat exchanger 10. The first refrigerant channel 11 and the first cooling water channel 12... Cooling water undergoes heat exchange, and the refrigerant condenses and releases heat, changing from a gaseous state to a liquid state. Then, the liquid refrigerant flows through the first expansion valve 91 and becomes a low-temperature, low-pressure liquid refrigerant. The refrigerant then flows to the second refrigerant channel 21 of the second heat exchanger 20 and evaporates, absorbing heat and vaporizing into a gas. It is then re-drawn into the first compressor 5, completing the cycle of the first loop 101. In this way, the first loop 101 can continuously release heat to the third loop 103 through the first heat exchanger 10. Under the action of the first drive unit 7, the third loop 103 releases heat to the passenger compartment through the heater core 84 to achieve heating of the passenger compartment.

[0066] In the second circuit 102, the refrigerant is compressed into a high-temperature, high-pressure gaseous refrigerant by the second compressor 6, and then flows through the third refrigerant channel 31 of the third heat exchanger 30. The third refrigerant channel 31 exchanges heat with the cooling water in the third cooling water channel 32, and the refrigerant condenses and releases heat, changing from a gaseous state to a liquid state. Then, the liquid refrigerant flows through the second expansion valve 92 and changes into a low-temperature, low-pressure liquid refrigerant. Then, the refrigerant flows to the fourth refrigerant channel 41 of the fourth heat exchanger 40 and evaporates and absorbs heat to vaporize into a gas. Then, it is re-inhaled by the second compressor 6 to complete the cycle of the second circuit 102. In this way, the second circuit 102 can continuously release heat to the third circuit 103 through the third heat exchanger 30. Under the action of the first drive unit 7, the third circuit 103 releases heat to the passenger compartment through the heater core 84 to achieve heating of the passenger compartment.

[0067] Understandably, in this mode, the heating of the crew compartment can be prioritized. If the heating demand of the crew compartment is low, the second compressor 6 can be activated to transfer heat to the third circuit 103 through the second circuit 102 to achieve heating of the crew compartment.

[0068] If the heating demand of the crew cabin is moderate, both the second compressor 6 and the first compressor 5 can be operated to transfer heat to the third circuit 103 through the second circuit 102 and the first circuit 101 to achieve heating of the crew cabin.

[0069] If the heating demand of the passenger compartment is high, both the second compressor 6 and the first compressor 5 can be operated to generate heat through the second circuit 102 and the first circuit 101 and transfer heat to the third circuit 103. The third circuit 103 is then heated through the first heater 82 to achieve heating of the passenger compartment and meet the tiered heating demand of the passenger compartment.

[0070] In the single-occupant cabin heating mode three (first heater 82 heating mode), in this mode, in the third circuit 103, the cooling water circulates sequentially along the first drive 7, the third cooling water flow channel 32, the first cooling water flow channel 12, the first heater 82, and the heater core 84 under the action of the first drive 7. The first heater 82 can heat the cooling water in the third circuit 103 so that the cooling water flows through the heater core 84 to achieve heating of the occupant cabin.

[0071] As some embodiments of this application, both the first heater 82 and the second heater 83 described below can be configured as electric heaters, and both the first heater 82 and the second heater 83 described below can heat cooling water by high voltage electricity.

[0072] It should be noted that the single-occupant cabin heating mode three is generally used when waste heat utilization and external air source heat pumps are not feasible.

[0073] In the first heating mode of the passenger compartment and power battery 109 (heating mode of external air source, first heater 82 and second heater 83), in the first circuit 101, the refrigerant circulates sequentially along the first compressor 5, the first refrigerant channel 11, the first expansion valve 91 and the second refrigerant channel 21 of the second heat exchanger 20 under the action of the first compressor 5. In the second circuit 102, the refrigerant circulates sequentially along the second compressor 6, the third refrigerant channel 31, the second expansion valve 92 and the fourth refrigerant channel 41 under the action of the second compressor 6. In the first cooling water circulation module 3, the cooling water circulates along the first drive unit 7, the third cooling water channel 32, the first cooling water channel 12 and the first heater 82 under the action of the first drive unit 7, and flows back to the first drive unit 7 through the heater core 84 and the fifth cooling water channel 51. The first multi-way valve 60 connects the third port 63 and the fifth port 65. The second heater 83 is connected in parallel with the sixth cooling water channel 52. The cooling water can circulate along the second drive member 8, the power battery 109, the fifth port 65, the third port 63, and through the sixth cooling water channel 52 and the second heater 83 under the action of the second drive member 8.

[0074] It should be noted that in this mode, the heating of the passenger compartment and the power battery 109 can be prioritized. If the heating demand of the passenger compartment and the power battery 109 is extremely low, the second compressor 6 can be activated to transfer heat to the first cooling water circulation module 3 through the second circuit 102. The cooling water flowing through the heater core 84 can release heat to the passenger compartment, and the cooling water flowing through the fifth cooling water channel 51 can exchange heat with the sixth cooling water channel 52 to raise the temperature of the cooling water in the sixth cooling water channel 52 so as to transfer the heat to the power battery 109.

[0075] If the heating demand of the passenger compartment and the power battery 109 is low, the second compressor 6 and the first compressor 5 can both be operated. Heat is transferred to the third circuit 103 through the first circuit 101 and the second circuit 102. Cooling water flowing through the heater core 84 can release heat to the passenger compartment. Cooling water flowing through the fifth cooling water channel 51 can exchange heat with the sixth cooling water channel 52 to raise the temperature of the cooling water in the sixth cooling water channel 52, and then transfer the heat to the power battery 109.

[0076] If the heating demand of the passenger compartment and the power battery 109 is moderate, the second compressor 6 and the first compressor 5 can both be operated to transfer heat to the third circuit 103 through the first circuit 101 and the second circuit 102. The first heater 82 in the third circuit 103 works to heat the cooling water in the third circuit 103. The cooling water can release heat to the passenger compartment by flowing through the heater core 84. The cooling water can exchange heat with the sixth cooling water channel 52 by flowing through the fifth cooling water channel 51 to transfer heat to the sixth cooling water channel 52 to raise the temperature of the cooling water in the sixth cooling water channel 52, and then transfer the heat to the power battery 109.

[0077] If the heating demand of the passenger compartment and the power battery 109 is high, the second compressor 6 and the first compressor 5 can both be operated to transfer heat to the third circuit 103 through the first circuit 101 and the second circuit 102. The first heater 82 in the third circuit 103 works to heat the cooling water in the third circuit 103. The cooling water flows through the heater core 84 and can release heat to the passenger compartment. The cooling water flows through the fifth cooling water channel 51 and can exchange heat with the sixth cooling water channel 52 to transfer heat to the sixth cooling water channel 52. In addition, the second heater 83 works to heat the cooling water flowing through it to heat the power battery 109.

[0078] The passenger compartment and power battery 109 heating mode two (first heater 82 and second heater 83 heating mode) can operate when the ambient temperature is low. In this mode, the first compressor 5 and the second compressor 6 are not working. In the first cooling water circulation module 3, the cooling water, under the action of the first drive unit 7, flows along the first drive unit 7, the third cooling water flow channel 32, the first cooling water flow channel 12, the first heater 82, and then through the heater core 84 and the fifth cooling water flow channel 51 back to the first drive unit 7. The first multi-way valve 60 connects the third interface 63 and the fifth interface 65, allowing the cooling water to flow along the second drive unit 8, the power battery 109, the fifth interface 65, and the third interface 63 under the action of the second drive unit 8, and then through the sixth cooling water flow channel 52 and the second heater 83 back to the second drive unit 8.

[0079] It should be noted that in this mode, the heating of the passenger compartment and the power battery 109 can be prioritized. If the heating demand of the passenger compartment and the power battery 109 is low, the first heater 82 in the third circuit 103 will work to heat the cooling water in the third circuit 103. The cooling water can release heat to the passenger compartment by flowing through the heater core 84. The cooling water can exchange heat with the sixth cooling water channel 52 by flowing through the fifth cooling water channel 51 to transfer heat to the sixth cooling water channel 52, and then transfer heat to the power battery 109.

[0080] If the heating demand of the passenger compartment and the power battery 109 is high, the first heater 82 in the third circuit 103 operates to heat the cooling water in the third circuit 103. The cooling water flows through the heater core 84 and can release heat to the passenger compartment. The cooling water flows through the fifth cooling water channel 51 and can exchange heat with the sixth cooling water channel 52 to transfer heat to the sixth cooling water channel 52. In addition, the second heater 83 operates to heat the cooling water flowing through it to heat the power battery 109.

[0081] In the first heating mode of the power battery 109 (heating mode of external air source (heat pump), first heater 82 and second heater 83), in the first circuit 101, the refrigerant circulates sequentially along the first compressor 5, the first refrigerant channel 11, the first expansion valve 91 and the second refrigerant channel 21 under the action of the first compressor 5. In the second circuit 102, the refrigerant circulates sequentially along the second compressor 6, the third refrigerant channel 31, the second expansion valve 92 and the fourth refrigerant channel 41 under the action of the second compressor 6. In the first cooling water circulation module 3, the cooling water circulates sequentially along the first drive component 7, the third cooling water channel 32, the first cooling water channel 12, the first heater 82 and the fifth cooling water channel 51 under the action of the first drive component 7 (the opening of the control valve can be used to adjust whether the cooling water flows through the heater core 84). The first multi-way valve 60 connects the third port 63 and the fifth port 65, allowing cooling water to flow along the second drive unit 8, the power battery 109, the fifth port 65, and the third port 63 under the action of the second drive unit 8, and then flow back to the second drive unit 8 through the sixth cooling water channel 52 and the second heater 83.

[0082] It should be noted that, in this case, the heating of the power battery 109 can be prioritized. If the heating demand of the power battery 109 is extremely low, the second compressor 6 can be operated to transfer heat to the first cooling water circulation module 3 through the second circuit 102. The cooling water flowing through the fifth cooling water channel 51 can exchange heat with the sixth cooling water channel 52 to transfer heat to the power battery 109.

[0083] If the heating demand of the power battery 109 is low, the second compressor 6 and the first compressor 5 can both be operated to transfer heat to the first cooling water circulation module 3 through the first circuit 101 and the second circuit 102. The cooling water can exchange heat with the sixth cooling water flow channel 52 through the fifth cooling water flow channel 51 to transfer heat to the sixth cooling water flow channel 52, and then transfer heat to the power battery 109.

[0084] If the heating demand of the power battery 109 is moderate, both the second compressor 6 and the first compressor 5 can be operated to transfer heat to the third circuit 103 through the first circuit 101 and the second circuit 102. In the third circuit 103, the first heater 82 works to heat the cooling water. The cooling water flows through the fifth cooling water channel 51 and can exchange heat with the sixth cooling water channel 52 to transfer heat to the sixth cooling water channel 52, and then transfer the heat to the power battery 109.

[0085] If the heating demand of the power battery 109 is high, the second compressor 6 and the first compressor 5 can both be operated to transfer heat to the first cooling water circulation module 3 through the first circuit 101 and the second circuit 102. In the third circuit 103, the first heater 82 works to heat the cooling water. The cooling water flows through the fifth cooling water channel 51 and can exchange heat with the sixth cooling water channel 52 to transfer heat to the sixth cooling water channel 52. In addition, the second heater 83 works to heat the cooling water flowing through it to heat the power battery 109.

[0086] In the second heating mode of the power battery 109 (heating mode of the first heater 82 and the second heater 83), under the action of the first driving member 7, the cooling water in the first cooling water circulation module 3 circulates sequentially along the first driving member 7, the third cooling water flow channel 32 of the third heat exchanger 30, the first cooling water flow channel 12 of the first heat exchanger 10, the first heater 82, and the fifth cooling water flow channel 51. The first multi-way valve 60 connects the third port 63 and the fifth port 65, allowing the cooling water to flow along the second driving member 8, the power battery 109, the fifth port 65, and the third port 63 under the action of the second driving member 8, and then flow back to the second driving member 8 through the sixth cooling water flow channel 52 and the second heater 83.

[0087] It should be noted that, in this case, the heating of the power battery 109 can be prioritized. If the heating demand of the power battery 109 is low, the first heater 82 in the third circuit 103 will work to heat the cooling water. The cooling water flows through the fifth cooling water channel 51 and can exchange heat with the sixth cooling water channel 52 to transfer heat to the sixth cooling water channel 52, and then transfer heat to the power battery 109.

[0088] If the power battery 109 has a high heating demand, the first heater 82 in the third circuit 103 will operate to heat the cooling water. The cooling water will flow through the fifth cooling water channel 51 and exchange heat with the sixth cooling water channel 52 to transfer heat to the sixth cooling water channel 52. In addition, the second heater 83 will operate to heat the cooling water flowing through it to heat the power battery 109.

[0089] Therefore, the thermal management system 100 of this application can realize multiple heating modes and can realize step-by-step heating of the passenger compartment and the power battery 109. It has a high degree of integration and can utilize the waste heat of the motor 88, the electronic control 89 and the power battery 109. It can significantly improve the energy utilization efficiency of the thermal management system 100, realize the comprehensive utilization of thermal energy and reduce energy consumption.

[0090] In some embodiments of the present invention, such as Figure 1As shown, the second refrigerant circulation module 2 also includes: a first shut-off valve 80, a third expansion valve 93, a first condenser 55, a fourth expansion valve 94, and an evaporator 54. The first shut-off valve 80 is located in the second circuit 102 and between the third refrigerant flow channel 31 and the second expansion valve 92. The second compressor 6, the third expansion valve 93, the first condenser 55, the fourth expansion valve 94, and the evaporator 54 form the fourth circuit 104. The first shut-off valve 80 and the first condenser 55 are connected in parallel.

[0091] The first shut-off valve 80 is located in the second circuit 102, and is positioned between the third refrigerant flow channel 31 and the second expansion valve 92. In some embodiments of this application, the second compressor 6, the third expansion valve 93, the first condenser 55, the fourth expansion valve 94, and the evaporator 54 are connected in series via pipelines to form the fourth circuit 104, and the first shut-off valve 80 is connected in parallel with the first condenser 55.

[0092] It should be noted that the fourth circuit 104 is capable of cooling. The working principle of the fourth circuit 104 can be understood as that of a vehicle's air conditioning system. The refrigerant is compressed into a high-temperature, high-pressure gaseous refrigerant by the second compressor 6, then flows through the first condenser 55, where it dissipates heat to become a medium-temperature, high-pressure liquid refrigerant. This liquid then flows through the fourth expansion valve 94, becoming a low-temperature, low-pressure liquid. Finally, in the evaporator 54, it changes from a low-temperature, low-pressure liquid to a low-temperature, low-pressure gaseous state, thus achieving cooling. It can be understood that when cooling is achieved through the fourth circuit 104, the third refrigerant flow channel 31 and the second expansion valve 92 can be considered as piping. Furthermore, when cooling is achieved through the fourth circuit 104, the opening of the first shut-off valve 80 is adjusted to 0 to cut off the second circuit 102.

[0093] As some embodiments of this application, the second refrigerant circulation module 2 further includes: a first one-way valve 78, which is disposed in the fourth circuit 104 and located between the first condenser 55 and the second expansion valve 92, so that the refrigerant can be conducted in the direction from the first condenser 55 to the second expansion valve 92. This arrangement can reduce the risk of refrigerant backflow and is conducive to maintaining the pressure stability of the thermal management system 100.

[0094] This configuration allows for a rational architecture of the thermal management system 100. By placing the first shut-off valve 80 in the second circuit 102 and between the third refrigerant flow channel 31 and the second expansion valve 92, the second compressor 6 can flexibly switch between the second circuit 102 and the fourth circuit 104, enabling heating or cooling through a single compressor 6 and reducing the cost of the thermal management system 100. Furthermore, by connecting the first shut-off valve 80 in parallel with the first condenser 55, the opening of the first shut-off valve 80 can be adjusted to 0 to cut off the second circuit 102, ensuring a continuous flow of refrigerant into the first condenser 55 and guaranteeing cooling performance. It is understood that without the first shut-off valve 80, a large amount of refrigerant would be diverted, reducing the refrigerant flow through the first condenser 55 and affecting cooling efficiency.

[0095] In some embodiments of the present invention, such as Figure 1 As shown, the fourth expansion valve 94 and the evaporator 54 form the first branch 106, and the second expansion valve 92 and the fourth refrigerant flow channel 41 form the second branch 107. The first branch 106 and the second branch 107 are connected in parallel.

[0096] As some embodiments of this application, the fourth expansion valve 94 and the evaporator 54 are connected in series via a pipeline to form a first branch 106, and the second expansion valve 92 and the fourth refrigerant channel 41 are connected in series via a pipeline to form a second branch 107. Furthermore, the first branch 106 and the second branch 107 are arranged in parallel. The fourth expansion valve 94 can control the on / off state of the first branch 106, and the second expansion valve 92 can control the on / off state of the second branch 107.

[0097] By connecting the first branch 106 and the second branch 107 in parallel, the second compressor 6, the first condenser 55, the second expansion valve 92, and the fourth refrigerant flow channel 41 can form a refrigeration circuit. This allows the refrigeration circuit formed by the second compressor 6, the first condenser 55, the second expansion valve 92, and the fourth refrigerant flow channel 41 to cool the components in the second cooling water circulation module 4 through the fourth heat exchanger 40.

[0098] This configuration makes the architecture of the thermal management system 100 more reasonable. Multiple components can be cooled by sharing a second compressor 6, which simplifies the architectural complexity of the thermal management system 100, reduces the cost of the thermal management system 100, and helps to improve the energy utilization rate of the thermal management system 100.

[0099] In some examples of the present invention, there are multiple evaporators 54 and multiple fourth expansion valves 94. The multiple evaporators 54 and multiple fourth expansion valves 94 correspond one-to-one to form multiple first branches 106, and the multiple first branches 106 are connected in parallel.

[0100] The number of evaporators 54 is multiple, and the number of evaporators 54 can be, but is not limited to, two or three. The number of fourth expansion valves 94 is also multiple, and the number of fourth expansion valves 94 can be, but is not limited to, two or three. Multiple evaporators 54 and multiple fourth expansion valves 94 are one-to-one to form multiple first branches 106. As some embodiments of this application, the number of evaporators 54 is two, and the number of fourth expansion valves 94 is also two. Two evaporators 54 and two fourth expansion valves 94 are one-to-one to form two first branches 106, and the two first branches 106 are arranged in parallel.

[0101] As some embodiments of this application, there are three evaporators 54 and three fourth expansion valves 94. The three evaporators 54 and the three fourth expansion valves 94 correspond one-to-one to form three first branches 106, and the three first branches 106 are arranged in parallel.

[0102] This configuration can improve the cooling capacity of the thermal management system 100. Furthermore, by distributing multiple evaporators 54 to different locations in the passenger compartment (for example, some evaporators 54 are located in the cockpit and some evaporators 54 are located in the passenger compartment), the thermal management system 100 can cool multiple locations in the passenger compartment to meet the cooling needs of each location in the passenger compartment and can rapidly reduce the temperature of the passenger compartment, thereby improving the cooling efficiency of the passenger compartment.

[0103] In some embodiments of the present invention, such as Figure 1 As shown, the first refrigerant circulation module 1 further includes: a second shut-off valve 81, a fifth expansion valve 95, and a second condenser 56. The second shut-off valve 81 is located in the first circuit 101 and between the first refrigerant flow channel 11 and the first expansion valve 91. The fifth expansion valve 95 and the second condenser 56 are connected in series to form a third branch. The third branch is connected between the first refrigerant flow channel 11 and the first expansion valve 91 and is connected in parallel with the second shut-off valve 81.

[0104] The second shut-off valve 81 is located in the first circuit 101 and is positioned between the first refrigerant flow channel 11 and the first expansion valve 91. In some embodiments of this application, the fifth expansion valve 95 is connected in series with the second condenser 56 to form a third branch, which is connected between the first refrigerant flow channel 11 and the first expansion valve 91 and in parallel with the second shut-off valve 81.

[0105] As some embodiments of this application, the first compressor 5, the fifth expansion valve 95, the second condenser 56, the first expansion valve 91, and the second refrigerant flow channel 21 are connected in series through pipelines to form a fifth circuit 105.

[0106] It should be noted that the fifth circuit 105 can achieve refrigeration. The working principle of the fifth circuit 105 can be understood as the working principle of the vehicle air conditioner. The refrigerant is compressed into a high-temperature and high-pressure gaseous refrigerant under the action of the first compressor 5, and then flows through the second condenser 56. In the second condenser 56, the refrigerant dissipates heat and becomes a medium-temperature and high-pressure liquid refrigerant. It flows through the first expansion valve 91 and becomes a low-temperature and low-pressure liquid. Finally, it exchanges heat with the cooling water in the second refrigerant flow channel 21 and the second cooling water flow channel 22 of the second heat exchanger 20, and changes from a low-temperature and low-pressure liquid to a low-temperature and low-pressure gaseous state to achieve refrigeration.

[0107] As some embodiments of this application, the first refrigerant circulation module 1 further includes a second one-way valve 79, which is located in the fifth circuit 105 and between the second condenser 56 and the first expansion valve 91, so that the refrigerant can be conducted along the direction from the second condenser 56 to the first expansion valve 91. This arrangement can reduce the risk of refrigerant backflow and is conducive to maintaining the pressure stability of the thermal management system 100.

[0108] As some embodiments of this application, the thermal management system 100 also includes a condenser fan 108, which is configured correspondingly to the first condenser 55 and the second condenser 56. The condenser fan 108 can accelerate the airflow around the first condenser 55 and the second condenser 56 to increase the heat dissipation rate of the first condenser 55 and the second condenser 56.

[0109] The thermal management system 100 of this application can have multiple cooling modes. The specific working states of the thermal management system 100 under multiple cooling modes are described in detail below.

[0110] In the single-occupant cabin cooling mode, the refrigerant can circulate along the second compressor 6, the third expansion valve 93, the first condenser 55, the fourth expansion valve 94, and the evaporator 54, and achieve cooling of the occupant cabin through the evaporator 54.

[0111] The first mode of refrigeration for the passenger compartment and power battery 109 is suitable for situations where the cooling demand for the passenger compartment and power battery 109 is low. In this mode, the second compressor 6 operates, the fourth circuit 104 is connected, and the second branch circuit 107 is also connected. The refrigerant can circulate along the second compressor 6, the third expansion valve 93, the first condenser 55, the fourth expansion valve 94, and the evaporator 54 to achieve refrigeration of the passenger compartment. The first multi-way valve 60 can connect the second port 62 and the fourth port 64, and the fifth port 65 and the first port 61. Cooling water can flow through the second drive unit 8. Under the action of the refrigerant, it flows back to the second drive unit 8 through the second drive unit 8, the power battery 109, the fifth interface 65, the first interface 61, the second cooling water channel 22 and the fourth cooling water channel 42, the second interface 62 and the fourth interface 64. In addition, the refrigerant can also circulate through the second compressor 6, the third expansion valve 93, the first condenser 55, the second expansion valve 92 and the fourth refrigerant channel 41. The fourth refrigerant channel 41 and the fourth cooling water channel 42 can exchange heat to reduce the temperature of the cooling water in the fourth cooling water channel 42, thereby achieving the cooling of the power battery 109.

[0112] The second mode for refrigeration of the passenger compartment and power battery 109 is applicable to moderate refrigeration needs of both the passenger compartment and power battery 109. In this mode, the fourth circuit 104 and the fifth circuit 105 are connected, while the second branch 107 is disconnected. In the fourth circuit 104, the refrigerant circulates along the second compressor 6, the third expansion valve 93, the first condenser 55, the fourth expansion valve 94, and the evaporator 54 to achieve refrigeration of the passenger compartment. In the fifth circuit 105, the refrigerant circulates along the first compressor 5, the fifth expansion valve 95, the second condenser 56, the first expansion valve 91, and the second refrigerant flow channel 21. The first multi-way valve 60 enables the second port 62 to be connected to the fourth port 64 and the fifth port 65 to be connected to the first port 61. Under the action of the second driving member 8, the cooling water flows sequentially along the second driving member 8, the power battery 109, the fifth port 65, and the first port 61, and then through the second cooling water channel 22 and the fourth cooling water channel 42. It then flows back to the second driving member 8 through the second port 62 and the fourth port 64. The second refrigerant channel 21 and the second cooling water channel 22 can exchange heat to reduce the temperature of the cooling water in the second cooling water channel 22, thereby cooling the power battery 109.

[0113] The third mode for occupant compartment cooling and power battery 109 cooling is suitable for situations with high cooling demands on the occupant compartment and power battery 109. In this mode, the fourth circuit 104, the fifth circuit 105, and the second branch 107 are connected. In the fourth circuit 104, the refrigerant circulates along the second compressor 6, the third expansion valve 93, the first condenser 55, the fourth expansion valve 94, and the evaporator 54 to achieve occupant compartment cooling. Furthermore, the refrigerant circulates along the second compressor 6, the third expansion valve 93, the first condenser 55, the second expansion valve 92, and the fourth refrigerant flow channel 41. In the fifth circuit 105, the refrigerant circulates along the first compressor 5, the fifth expansion valve 95, the second condenser 56, the first expansion valve 91, and the second refrigerant flow channel 21. The first multi-port valve 60 allows the second port 62 and the fourth port 6 to connect. 4. With the fifth interface 65 and the first interface 61 connected, the cooling water can flow sequentially along the second driving component 8, the power battery 109, the fifth interface 65, the first interface 61, and the second cooling water channel 22 under the action of the second driving component 8. Furthermore, the cooling water can also flow sequentially along the second driving component 8, the power battery 109, the fifth interface 65, the first interface 61, and the fourth cooling water channel 42 under the action of the second driving component 8. The cooling water flowing out of the second cooling water channel 22 and the fourth cooling water channel 42 flows back to the second driving component 8 through the second interface 62 and the fourth interface 64. The second refrigerant channel 21 and the second cooling water channel 22 can exchange heat, and the fourth refrigerant channel 41 and the fourth cooling water channel 42 can exchange heat, so that the first compressor 5 and the second compressor 6 can jointly achieve the cooling of the power battery 109.

[0114] In the first cooling mode of the single power battery 109, this mode is suitable for when the cooling demand of the power battery 109 is low. In this mode, the fifth circuit 105 is connected, and the refrigerant in the fifth circuit 105 can circulate along the first compressor 5, the fifth expansion valve 95, the second condenser 56, the first expansion valve 91, and the second refrigerant flow channel 21. The first multi-way valve 60 can connect the second port 62 and the fourth port 64, and the fifth port 65 and the first port 61. The cooling water can flow sequentially along the second drive component 8, the power battery 109, the fifth port 65, and the first port 61 under the action of the second drive component 8, and through the second cooling water flow channel 22 and the fourth cooling water flow channel 42, and then flow back to the second drive component 8 through the second port 62 and the fourth port 64. The second refrigerant flow channel 21 and the second cooling water flow channel 22 can exchange heat, thereby achieving the cooling of the power battery 109.

[0115] Single power battery 109 cooling mode two: This mode is suitable for situations where the cooling demand of power battery 109 is high. In this mode, the second branch 107 is connected, and the fifth circuit 105 is connected. The refrigerant can circulate along the second compressor 6, the third expansion valve 93, the first condenser 55, the second expansion valve 92, and the fourth refrigerant flow channel 41. In the fifth circuit 105, the refrigerant can circulate along the first compressor 5, the fifth expansion valve 95, the second condenser 56, the first expansion valve 91, and the second refrigerant flow channel 21. The first multi-way valve 60 can connect the second interface 62 and the fourth interface. With the fifth interface 65 and the first interface 61 connected, the cooling water can circulate sequentially along the second driving component 8, the power battery 109, the fifth interface 65, the first interface 61, the second cooling water channel 22 and the fourth cooling water channel 42, the second interface 62, and the fourth interface 64 under the action of the second driving component 8. The second refrigerant channel 21 and the second cooling water channel 22 can exchange heat, and the fourth refrigerant channel 41 and the fourth cooling water channel 42 can exchange heat, thereby achieving the cooling of the power battery 109 through the first compressor 5 and the second compressor 6.

[0116] This configuration enables the thermal management system 100 to have multiple cooling modes and to realize a non-coupled dual compressor system of the first compressor 5 and the second compressor 6, which can significantly improve the energy utilization rate of the thermal management system 100, significantly reduce the energy consumption of the vehicle, and improve the reliability of the thermal management system 100.

[0117] In some embodiments of the present invention, such as Figure 1 As shown, the thermal management system 100 also includes: multiple air supply components 85, multiple warm air cores 84, multiple warm air cores 84 connected in parallel, and multiple warm air cores 84, multiple evaporators 54, and multiple air supply components 85 corresponding one-to-one.

[0118] The system comprises multiple air supply components 85, including but not limited to two or three, and multiple warm air cores 84, including but not limited to two or three. Each of the multiple warm air cores 84, multiple evaporators 54, and multiple air supply components 85 corresponds to one another. In some embodiments of this application, the number of air supply components 85, warm air cores 84, and evaporators 54 is two, with two warm air cores 84, two evaporators 54, and two air supply components 85 arranged in a one-to-one correspondence. The air supply components 85 can accelerate the airflow around the corresponding warm air cores 84 and evaporators 54, thereby increasing the heat exchange rate between the warm air cores 84 and the surrounding air, and between the evaporators 54 and the surrounding air. This arrangement can reduce the number of air supply components 85 required and improve the degree of integration.

[0119] In some embodiments of the present invention, such as Figure 1As shown, the first multi-way valve 60 also includes an eighth port 68 and a ninth port 69, and the second cooling water circulation module 4 also includes a radiator 86, with the radiator 86 located between the eighth port 68 and the ninth port 69.

[0120] It is understood that the radiator 86 can directly contact the outside air for heat exchange. As some embodiments of this application, the radiator 86 is connected between the eighth interface 68 and the ninth interface 69 through a pipe. A cooling fan 87 is provided at the radiator 86. This arrangement can increase the heat dissipation efficiency of the radiator 86.

[0121] The thermal management system 100 proposed in this application may also have a single power battery 109 cooling mode three. This mode is suitable for low ambient temperatures. In this mode, the first multi-way valve 60 can connect the fifth port 65 with the eighth port 68 and the ninth port 69 with the fourth port 64. Cooling water can circulate sequentially along the second drive member 8, the power battery 109, the fifth port 65, the eighth port 68, the radiator 86, the ninth port 69, and the fourth port 64 under the action of the second drive member 8. The cooling water can dissipate heat at the radiator 86 to reduce the temperature and achieve cooling of the power battery 109.

[0122] The thermal management system 100 proposed in this application may also have a cooling mode for the power battery 109, motor 88, and electronic control 89. This mode is suitable for low ambient temperatures. In this mode, the first multi-way valve 60 can connect the fifth port 65 to the sixth port 66, the seventh port 67 to the eighth port 68, and the ninth port 69 to the fourth port 64. Cooling water can circulate sequentially along the second drive member 8, the power battery 109, the fifth port 65, the sixth port 66, the third drive member 9, the electronic control 89, the motor 88, the seventh port 67, the eighth port 68, the radiator 86, the ninth port 69, and the fourth port 64 under the action of the second drive member 8 and / or the third drive member 9. The cooling water can dissipate heat at the radiator 86 to reduce the temperature and achieve cooling of the power battery 109, the motor 88, and the electronic control 89.

[0123] The thermal management system 100 proposed in this application may also have a cooling mode for motor 88 and electronic control 89. This mode is suitable for low ambient temperatures. In this mode, the first multi-way valve 60 can connect the seventh port 67 to the eighth port 68 and the ninth port 69 to the sixth port 66. Cooling water can circulate sequentially along the third driver 9, motor 88, electronic control 89, seventh port 67, eighth port 68, radiator 86, ninth port 69, and sixth port 66 under the action of the third driver 9. The cooling water can dissipate heat at the radiator 86 to reduce the temperature and achieve cooling of motor 88 and electronic control 89.

[0124] This configuration allows the radiator 86 to cool the power motor 88, the motor 88 and the electronic control 89, which can significantly reduce the vehicle's energy consumption and improve the energy utilization rate of the thermal management system 100.

[0125] In some embodiments of the present invention, such as Figure 1 As shown, the first multi-way valve 60 further includes a tenth port 71, and the second cooling water circulation module 4 further includes an expansion tank 96, which is connected to the tenth port 71. In some embodiments of this application, the expansion tank 96 and the tenth port 71 are connected via pipelines. Connecting the expansion tank 96 to the tenth port 71 facilitates the replenishment of air and drainage of liquid in the second cooling water circulation module 4, thereby improving the reliability of the thermal management system 100.

[0126] As some embodiments of this application, the second cooling water circulation module 4 also includes a heater tank 97, which is disposed between the heater core 84 and the first drive member 7. This arrangement facilitates the replenishment of air and drainage of liquid in the first cooling water circulation module 3, which is beneficial to improving the reliability of the thermal management system 100.

[0127] In some embodiments of the present invention, such as Figure 1 As shown, the first cooling water circulation module 3 also includes a second multi-way valve 70, which includes an eleventh port 72, a twelfth port 73, and a thirteenth port 75. The eleventh port 72 is connected to the first heater 82, the twelfth port 73 is connected to the heater core 84, and the thirteenth port 75 is connected to the fifth cooling water channel 51.

[0128] As some embodiments of this application, the eleventh port 72 of the second multi-way valve 70 is connected to the first heater 82 via a pipeline, the twelfth port 73 of the second multi-way valve 70 is connected to the heater core 84 via a pipeline, and the thirteenth port 75 of the second multi-way valve 70 is connected to the fifth cooling water channel 51 via a pipeline.

[0129] It is understandable that the flow direction of cooling water in the first cooling water circulation module 3 can be controlled by controlling the second multi-way valve 70, so as to realize multiple modes of the thermal management system 100.

[0130] This configuration facilitates control over the flow of cooling water in the first cooling water circulation module 3, enabling multiple operating modes of the thermal management system 100 and improving its reliability.

[0131] In some embodiments of the present invention, such as Figure 1As shown, the second cooling water circulation module 4 also includes a third multi-way valve 74, which includes a fourteenth interface 76, a fifteenth interface 77, and a sixteenth interface 98. The fourteenth interface 76 is connected to the sixth cooling water flow channel 52, the fifteenth interface 77 is connected to the fourth interface 64, and the sixteenth interface 98 is connected to the second drive unit 8.

[0132] As some embodiments of this application, the fourteenth port 76 of the third multi-way valve 74 is connected to the sixth cooling water channel 52 via a pipeline, the fifteenth port 77 of the third multi-way valve 74 is connected to the fourth port 64 of the first multi-way valve 60 via a pipeline, and the sixteenth port 98 of the third multi-way valve 74 is connected to the second drive unit 8 via a pipeline.

[0133] It is understandable that the flow direction of cooling water in the second cooling water circulation module 4 can be controlled by controlling the third multi-way valve 74, so as to realize multiple modes of the thermal management system 100.

[0134] This configuration facilitates control over the flow direction of cooling water in the second cooling water circulation module 4. Furthermore, the third multi-way valve 74 can cooperate with the first multi-way valve 60 to realize multiple flow paths in the thermal management system 100, which helps improve the reliability of the thermal management system 100.

[0135] It should be noted that the first expansion valve 91, the second expansion valve 92, the third expansion valve 93, the fourth expansion valve 94, and the fifth expansion valve 95 can all be constructed as electronic expansion valves. The opening and closing or the degree of opening of the first expansion valve 91, the second expansion valve 92, the third expansion valve 93, the fourth expansion valve 94, and the fifth expansion valve 95 can be controlled by electricity to realize multiple working modes of the thermal management system 100.

[0136] The working modes of the thermal management system 100 proposed in this application are described in detail below. The thermal management system 100 proposed in this application may have, but is not limited to, the following sixteen modes.

[0137] The first operating mode can be a single-occupant cabin heating mode one (waste heat utilization and heating mode of the first heater 82). In this mode, in the first circuit 101, the refrigerant circulates sequentially along the first compressor 5, the first refrigerant flow channel 11 of the first heat exchanger 10, the first expansion valve 91, and the second refrigerant flow channel 21 of the second heat exchanger 20 under the action of the first compressor 5. In the second circuit 102, the refrigerant circulates sequentially along the second compressor 6, the third refrigerant flow channel 31 of the third heat exchanger 30, the second expansion valve 92, and the fourth refrigerant flow channel 41 of the fourth heat exchanger 40 under the action of the second compressor 6. In the third circuit 103, the cooling water circulates sequentially along the first drive unit 7, the third cooling water flow channel 32 of the third heat exchanger 30, the first cooling water flow channel 12 of the first heat exchanger 10, the first heater 82, and the heater core 84 under the action of the first drive unit 7.

[0138] The first multi-way valve 60 enables the second port 62 to be connected to the fourth port 64, the fifth port 65 to the sixth port 66, and the seventh port 67 to the first port 61. Under the action of the second driving member 8, the cooling water can sequentially flow through the second driving member 8, the power battery 109, the fifth port 65, the sixth port 66, the third driving member 9, the electronic control unit 89, the motor 88, the seventh port 67, and the first port 61, and circulate back to the second driving member 8 through the second cooling water flow channel 22 and the fourth cooling water flow channel 42.

[0139] Cooling water can remove waste heat from the motor 88, power battery 109, and electronic control unit 89 through heat exchange. It also exchanges heat with the refrigerant in the second cooling water channel 22 of the second heat exchanger 20 and the fourth cooling water channel 42 of the fourth heat exchanger 40, respectively, to transfer heat to the first circuit 101 and the second circuit 102. The refrigerant in the first circuit 101 flows through the first refrigerant channel 1 of the first heat exchanger 10. The refrigerant in the second circuit 102 can exchange heat with the cooling water in the third cooling water channel 32 in the third refrigerant channel 31 of the third heat exchanger 30 to transfer heat to the third circuit 103. The heat in the third circuit 103 can be transferred to the passenger compartment through the heater core 84 to realize the use of the waste heat of the motor 88, the electronic control 89, and the power battery 109 to heat the passenger compartment.

[0140] It should be noted that the waste heat utilization of the motor 88, the electronic control unit 89, and the power battery 109 can be selectively utilized based on the temperature of the motor 88, the power battery 109, and the electronic control unit 89. Specifically, the first multi-way valve 60 can selectively open the interfaces based on the temperature of the cooling water flowing through the motor 88, the power battery 109, and the electronic control unit 89, so that the waste heat of the motor 88, the electronic control unit 89, and the power battery 109 can be used for heating independently. As some embodiments of this application, the first multi-way valve 60 can connect the second interface 62 and the fourth interface 64 and connect the fifth interface 65 and the first interface 61. The cooling water can flow back to the second drive unit 8 through the second drive unit 8, the power battery 109, the fifth interface 65, and the first interface 61 in sequence under the action of the second drive unit 8, and through the second cooling water flow channel 22 and the fourth cooling water flow channel 42, so as to realize the use of the waste heat of the power battery 109 to heat the passenger compartment.

[0141] As some embodiments of this application, the first multi-way valve 60 enables the second port 62 to be connected to the sixth port 66 and the seventh port 67 to be connected to the first port 61. Under the action of the third driving member 9, the cooling water can flow sequentially along the third driving member 9, the electronic control 89, the motor 88, the seventh port 67, and the first port 61, and then flow back to the third driving member 9 through the second cooling water channel 22 and the fourth cooling water channel 42, so as to realize the use of the waste heat of the motor 88 and the electronic control 89 to heat the crew compartment.

[0142] Understandably, in this mode, the heating of the passenger compartment can be prioritized. If the heating demand of the passenger compartment is low, the second compressor 6 can be operated. The waste heat of at least one of the motor 88, electronic control 89, and power battery 109 can be transferred to the second circuit 102 through the fourth heat exchanger 40, and then transferred from the second circuit 102 to the third circuit 103 through the third heat exchanger 30, so as to achieve heating of the passenger compartment through the warm air core 84.

[0143] If the heating demand of the passenger compartment is moderate, both the second compressor 6 and the first compressor 5 can be operated. The waste heat of at least one of the motor 88, electronic control 89, and power battery 109 is transferred to the first circuit 101 and the second circuit 102 through the fourth heat exchanger 40 and the second heat exchanger 20. Then, the second circuit 102 transfers heat to the third circuit 103 through the third heat exchanger 30, and the first circuit 101 transfers heat to the third circuit 103 through the first heat exchanger 10, so as to achieve heating of the passenger compartment through the heater core 84.

[0144] If the heating demand of the passenger compartment is high, both the second compressor 6 and the first compressor 5 can be operated. The waste heat from at least one of the motor 88, electronic control unit 89, and power battery 109 is transferred to the first circuit 101 and the second circuit 102 through the fourth heat exchanger 40 and the second heat exchanger 20. Then, the second circuit 102 transfers heat to the third circuit 103 through the third heat exchanger 30, and the first circuit 101 transfers heat to the third circuit 103 through the first heat exchanger 10. The third circuit 103 is then heated by the first heater 82, so that the passenger compartment can be heated through the heater core 84. This satisfies the tiered heating demand of the passenger compartment.

[0145] The second operating mode can be a single-occupant cabin heating mode two (heating mode using external air energy and the first heater 82). In this mode, the first circuit 101 and the second circuit 102 can utilize external air energy for heating. The heating principle of the first circuit 101 and the second circuit 102 can be understood as the working principle of a heat pump (compression-condensation-expansion-evaporation). Specifically, in the first circuit 101, the refrigerant is compressed into a high-temperature, high-pressure gaseous refrigerant by the first compressor 5, and then flows through the first refrigerant channel 11 of the first heat exchanger 10. The first refrigerant channel 11 and the first cooling water channel... The cooling water in 12 undergoes heat exchange, and the refrigerant condenses and releases heat, changing from a gaseous state to a liquid state. Then, the liquid refrigerant flows through the first expansion valve 91 and becomes a low-temperature, low-pressure liquid refrigerant. The refrigerant then flows to the second refrigerant channel 21 of the second heat exchanger 20 and evaporates, absorbing heat and vaporizing into a gas. It is then re-drawn into the first compressor 5, completing the cycle of the first loop 101. In this way, the first loop 101 can continuously release heat to the third loop 103 through the first heat exchanger 10. Under the action of the first drive unit 7, the third loop 103 releases heat to the passenger compartment through the heater core 84 to achieve heating of the passenger compartment.

[0146] In the second circuit 102, the refrigerant is compressed into a high-temperature, high-pressure gaseous refrigerant by the second compressor 6, and then flows through the third refrigerant channel 31 of the third heat exchanger 30. The third refrigerant channel 31 exchanges heat with the cooling water in the third cooling water channel 32, and the refrigerant condenses and releases heat, changing from a gaseous state to a liquid state. Then, the liquid refrigerant flows through the second expansion valve 92 and changes into a low-temperature, low-pressure liquid refrigerant. Then, the refrigerant flows to the fourth refrigerant channel 41 of the fourth heat exchanger 40 and evaporates and absorbs heat to vaporize into a gas. Then, it is re-inhaled by the second compressor 6 to complete the cycle of the second circuit 102. In this way, the second circuit 102 can continuously release heat to the third circuit 103 through the third heat exchanger 30. Under the action of the first drive unit 7, the third circuit 103 releases heat to the passenger compartment through the heater core 84 to achieve heating of the passenger compartment.

[0147] Understandably, in this mode, the heating of the crew compartment can be prioritized. If the heating demand of the crew compartment is low, the second compressor 6 can be activated to transfer heat to the third circuit 103 through the second circuit 102 to achieve heating of the crew compartment.

[0148] If the heating demand of the crew cabin is moderate, both the second compressor 6 and the first compressor 5 can be operated to transfer heat to the third circuit 103 through the second circuit 102 and the first circuit 101 to achieve heating of the crew cabin.

[0149] If the heating demand of the passenger compartment is high, both the second compressor 6 and the first compressor 5 can be operated to generate heat through the second circuit 102 and the first circuit 101 and transfer heat to the third circuit 103. The third circuit 103 is then heated through the first heater 82 to achieve heating of the passenger compartment and meet the tiered heating demand of the passenger compartment.

[0150] The third operating mode can be the single-occupant cabin heating mode three (first heater 82 heating mode). In this mode, in the third circuit 103, the cooling water circulates sequentially along the first drive 7, the third cooling water channel 32, the first cooling water channel 12, the first heater 82, and the heater core 84 under the action of the first drive 7. The first heater 82 can heat the cooling water in the third circuit 103 so that the cooling water flows through the heater core 84 to achieve heating of the occupant cabin.

[0151] As some embodiments of this application, both the first heater 82 and the second heater 83 described below can be configured as electric heaters, and both the first heater 82 and the second heater 83 described below can heat cooling water by high voltage electricity.

[0152] It should be noted that the single-occupant cabin heating mode three is generally used when waste heat utilization and external air source heat pumps are not feasible.

[0153] The fourth working mode can be the passenger compartment and power battery 109 heating mode one (external air source, first heater 82 and second heater 83 heating mode). In this mode, in the first circuit 101, the refrigerant circulates sequentially along the first compressor 5, the first refrigerant flow channel 11, the first expansion valve 91 and the second refrigerant flow channel 21 of the second heat exchanger 20 under the action of the first compressor 5. In the second circuit 102, the refrigerant circulates sequentially along the second compressor 6, the third refrigerant flow channel 31, the second expansion valve 92 and the fourth refrigerant flow channel 41 under the action of the second compressor 6. In the first cooling water circulation module 3, the cooling water circulates along the first drive unit 7, the third cooling water flow channel 32, the first cooling water flow channel 12 and the first heater 82 under the action of the first drive unit 7, and flows back to the first drive unit 7 through the heater core 84 and the fifth cooling water flow channel 51. The first multi-way valve 60 connects the third port 63 and the fifth port 65. The second heater 83 is connected in parallel with the sixth cooling water channel 52. The cooling water can circulate along the second drive member 8, the power battery 109, the fifth port 65, the third port 63, and through the sixth cooling water channel 52 and the second heater 83 under the action of the second drive member 8.

[0154] It should be noted that in this mode, the heating of the passenger compartment and the power battery 109 can be prioritized. If the heating demand of the passenger compartment and the power battery 109 is extremely low, the second compressor 6 can be activated to transfer heat to the first cooling water circulation module 3 through the second circuit 102. The cooling water flowing through the heater core 84 can release heat to the passenger compartment, and the cooling water flowing through the fifth cooling water channel 51 can exchange heat with the sixth cooling water channel 52 to raise the temperature of the cooling water in the sixth cooling water channel 52 so as to transfer the heat to the power battery 109.

[0155] If the heating demand of the passenger compartment and the power battery 109 is low, the second compressor 6 and the first compressor 5 can both be operated. Heat is transferred to the third circuit 103 through the first circuit 101 and the second circuit 102. Cooling water flowing through the heater core 84 can release heat to the passenger compartment. Cooling water flowing through the fifth cooling water channel 51 can exchange heat with the sixth cooling water channel 52 to raise the temperature of the cooling water in the sixth cooling water channel 52, and then transfer the heat to the power battery 109.

[0156] If the heating demand of the passenger compartment and the power battery 109 is moderate, the second compressor 6 and the first compressor 5 can both be operated to transfer heat to the third circuit 103 through the first circuit 101 and the second circuit 102. The first heater 82 in the third circuit 103 works to heat the cooling water in the third circuit 103. The cooling water can release heat to the passenger compartment by flowing through the heater core 84. The cooling water can exchange heat with the sixth cooling water channel 52 by flowing through the fifth cooling water channel 51 to transfer heat to the sixth cooling water channel 52 to raise the temperature of the cooling water in the sixth cooling water channel 52, and then transfer the heat to the power battery 109.

[0157] If the heating demand of the passenger compartment and the power battery 109 is high, the second compressor 6 and the first compressor 5 can both be operated to transfer heat to the third circuit 103 through the first circuit 101 and the second circuit 102. The first heater 82 in the third circuit 103 works to heat the cooling water in the third circuit 103. The cooling water flows through the heater core 84 and can release heat to the passenger compartment. The cooling water flows through the fifth cooling water channel 51 and can exchange heat with the sixth cooling water channel 52 to transfer heat to the sixth cooling water channel 52. In addition, the second heater 83 works to heat the cooling water flowing through it to heat the power battery 109.

[0158] The fifth operating mode can be the second heating mode for the passenger compartment and power battery 109 (heating mode of the first heater 82 and the second heater 83). This mode can operate when the ambient temperature is low. In this mode, neither the first compressor 5 nor the second compressor 6 works. In the first cooling water circulation module 3, the cooling water, under the action of the first drive unit 7, flows along the first drive unit 7, the third cooling water channel 32, the first cooling water channel 12, and the first heater 82, and then flows back to the first drive unit 7 through the heater core 84 and the fifth cooling water channel 51. The first multi-way valve 60 connects the third interface 63 and the fifth interface 65, allowing the cooling water to flow along the second drive unit 8, the power battery 109, the fifth interface 65, and the third interface 63 under the action of the second drive unit 8, and then flows back to the second drive unit 8 through the sixth cooling water channel 52 and the second heater 83.

[0159] It should be noted that in this mode, the heating of the passenger compartment and the power battery 109 can be prioritized. If the heating demand of the passenger compartment and the power battery 109 is low, the first heater 82 in the third circuit 103 will work to heat the cooling water in the third circuit 103. The cooling water can release heat to the passenger compartment by flowing through the heater core 84. The cooling water can exchange heat with the sixth cooling water channel 52 by flowing through the fifth cooling water channel 51 to transfer heat to the sixth cooling water channel 52, and then transfer heat to the power battery 109.

[0160] If the heating demand of the passenger compartment and the power battery 109 is high, the first heater 82 in the third circuit 103 operates to heat the cooling water in the third circuit 103. The cooling water flows through the heater core 84 and can release heat to the passenger compartment. The cooling water flows through the fifth cooling water channel 51 and can exchange heat with the sixth cooling water channel 52 to transfer heat to the sixth cooling water channel 52. In addition, the second heater 83 operates to heat the cooling water flowing through it to heat the power battery 109.

[0161] The sixth working mode can be the heating mode one of the power battery 109 (heating mode of external air source (heat pump), first heater 82 and second heater 83). In the first circuit 101, the refrigerant circulates sequentially along the first compressor 5, the first refrigerant channel 11, the first expansion valve 91 and the second refrigerant channel 21 under the action of the first compressor 5. In the second circuit 102, the refrigerant circulates sequentially along the second compressor 6, the third refrigerant channel 31, the second expansion valve 92 and the fourth refrigerant channel 41 under the action of the second compressor 6. In the first cooling water circulation module 3, the cooling water circulates sequentially along the first drive component 7, the third cooling water channel 32, the first cooling water channel 12, the first heater 82 and the fifth cooling water channel 51 under the action of the first drive component 7 (the opening of the control valve can be used to adjust whether the cooling water flows through the heater core 84). The first multi-way valve 60 connects the third port 63 and the fifth port 65, allowing cooling water to flow along the second drive unit 8, the power battery 109, the fifth port 65, and the third port 63 under the action of the second drive unit 8, and then flow back to the second drive unit 8 through the sixth cooling water channel 52 and the second heater 83.

[0162] It should be noted that, in this case, the heating of the power battery 109 can be prioritized. If the heating demand of the power battery 109 is extremely low, the second compressor 6 can be operated to transfer heat to the first cooling water circulation module 3 through the second circuit 102. The cooling water flowing through the fifth cooling water channel 51 can exchange heat with the sixth cooling water channel 52 to transfer heat to the power battery 109.

[0163] If the heating demand of the power battery 109 is low, the second compressor 6 and the first compressor 5 can both be operated to transfer heat to the first cooling water circulation module 3 through the first circuit 101 and the second circuit 102. The cooling water can exchange heat with the sixth cooling water flow channel 52 through the fifth cooling water flow channel 51 to transfer heat to the sixth cooling water flow channel 52, and then transfer heat to the power battery 109.

[0164] If the heating demand of the power battery 109 is moderate, both the second compressor 6 and the first compressor 5 can be operated to transfer heat to the third circuit 103 through the first circuit 101 and the second circuit 102. In the third circuit 103, the first heater 82 works to heat the cooling water. The cooling water flows through the fifth cooling water channel 51 and can exchange heat with the sixth cooling water channel 52 to transfer heat to the sixth cooling water channel 52, and then transfer the heat to the power battery 109.

[0165] If the heating demand of the power battery 109 is high, the second compressor 6 and the first compressor 5 can both be operated to transfer heat to the first cooling water circulation module 3 through the first circuit 101 and the second circuit 102. In the third circuit 103, the first heater 82 works to heat the cooling water. The cooling water flows through the fifth cooling water channel 51 and can exchange heat with the sixth cooling water channel 52 to transfer heat to the sixth cooling water channel 52. In addition, the second heater 83 works to heat the cooling water flowing through it to heat the power battery 109.

[0166] The seventh operating mode can be the second heating mode of the power battery 109 (heating mode of the first heater 82 and the second heater 83). In this mode, in the first cooling water circulation module 3, the cooling water circulates sequentially along the first driving member 7, the third cooling water channel 32 of the third heat exchanger 30, the first cooling water channel 12 of the first heat exchanger 10, the first heater 82, and the fifth cooling water channel 51 under the action of the first driving member 7. The first multi-way valve 60 connects the third port 63 and the fifth port 65, allowing the cooling water to flow along the second driving member 8, the power battery 109, the fifth port 65, and the third port 63 under the action of the second driving member 8, and then flow back to the second driving member 8 through the sixth cooling water channel 52 and the second heater 83.

[0167] It should be noted that, in this case, the heating of the power battery 109 can be prioritized. If the heating demand of the passenger compartment and the power battery 109 is low, the first heater 82 in the third circuit 103 will operate to heat the cooling water. The cooling water flows through the fifth cooling water channel 51 and can exchange heat with the sixth cooling water channel 52 to transfer heat to the sixth cooling water channel 52, and then transfer heat to the power battery 109.

[0168] If the heating demand of the passenger compartment and the power battery 109 is high, the first heater 82 in the third circuit 103 operates to heat the cooling water. The cooling water flows through the fifth cooling water channel 51 and can exchange heat with the sixth cooling water channel 52 to transfer heat to the sixth cooling water channel 52. In addition, the second heater 83 operates to heat the cooling water flowing through it to heat the power battery 109.

[0169] The eighth operating mode can be a single-occupant cabin cooling mode. In this mode, the refrigerant can circulate along the second compressor 6, the third expansion valve 93, the first condenser 55, the fourth expansion valve 94, and the evaporator 54, and achieve the cooling of the occupant cabin through the evaporator 54.

[0170] The ninth operating mode can be used for both passenger compartment cooling and power battery 109 cooling mode one. This mode is suitable when the cooling demand of the passenger compartment and power battery 109 is low. In this mode, the second compressor 6 operates, the fourth circuit 104 is connected, and the second branch circuit 107 is also connected. The refrigerant can circulate along the second compressor 6, the third expansion valve 93, the first condenser 55, the fourth expansion valve 94, and the evaporator 54 to achieve passenger compartment cooling. The first multi-way valve 60 can connect the second port 62 and the fourth port 64, and the fifth port 65 and the first port 61. Cooling water can flow through the second port 64 and the fourth port 64. Under the action of the drive unit 8, the refrigerant flows back to the second drive unit 8 through the second drive unit 8, the power battery 109, the fifth interface 65, the first interface 61, the second cooling water channel 22 and the fourth cooling water channel 42, the second interface 62, and the fourth interface 64. In addition, the refrigerant can also circulate through the second compressor 6, the third expansion valve 93, the first condenser 55, the second expansion valve 92, and the fourth refrigerant channel 41. The fourth refrigerant channel 41 and the fourth cooling water channel 42 can exchange heat to reduce the temperature of the cooling water in the fourth cooling water channel 42, thereby achieving the cooling of the power battery 109.

[0171] The tenth operating mode can be either refrigeration mode two for the passenger compartment and power battery 109. This mode is suitable for situations where the refrigeration demand for the passenger compartment and power battery 109 is moderate. In this mode, the fourth circuit 104 is connected, the fifth circuit 105 is connected, and the second branch 107 is not connected. In the fourth circuit 104, the refrigerant can circulate along the second compressor 6, the third expansion valve 93, the first condenser 55, the fourth expansion valve 94, and the evaporator 54 to achieve refrigeration of the passenger compartment. In the fifth circuit 105, the refrigerant can circulate along the first compressor 5, the fifth expansion valve 95, the second condenser 56, the first expansion valve 91, and the second refrigerant flow path. In the 21-circulation flow, the first multi-way valve 60 enables the second port 62 to be connected to the fourth port 64 and the fifth port 65 to be connected to the first port 61. Under the action of the second driving member 8, the cooling water flows sequentially along the second driving member 8, the power battery 109, the fifth port 65, and the first port 61, and passes through the second cooling water channel 22 and the fourth cooling water channel 42. Then, it flows back to the second driving member 8 through the second port 62 and the fourth port 64. The second refrigerant channel 21 and the second cooling water channel 22 can exchange heat to reduce the temperature of the cooling water in the second cooling water channel 22, thereby achieving the cooling of the power battery 109.

[0172] The eleventh operating mode can be either refrigeration of the passenger compartment or refrigeration of the power battery 109 (mode three). This mode is suitable when the refrigeration demand of the passenger compartment and power battery 109 is high. In this mode, the fourth circuit 104 is connected, the fifth circuit 105 is connected, and the second branch 107 is connected. In the fourth circuit 104, the refrigerant can circulate along the second compressor 6, the third expansion valve 93, the first condenser 55, the fourth expansion valve 94, and the evaporator 54 to achieve refrigeration of the passenger compartment. Furthermore, the refrigerant can circulate along the second compressor 6, the third expansion valve 93, the first condenser 55, the second expansion valve 92, and the fourth refrigerant flow channel 41. In the fifth circuit 105, the refrigerant can circulate along the first compressor 5, the fifth expansion valve 95, the second condenser 56, the first expansion valve 91, and the second refrigerant flow channel 21. The first multi-way valve 60 can connect the second interface 62 with... With the fourth interface 64 connected and the fifth interface 65 connected to the first interface 61, cooling water can flow sequentially along the second drive component 8, the power battery 109, the fifth interface 65, the first interface 61, and the second cooling water channel 22 under the action of the second drive component 8. Furthermore, the cooling water can also flow sequentially along the second drive component 8, the power battery 109, the fifth interface 65, the first interface 61, and the fourth cooling water channel 42 under the action of the second drive component 8. The cooling water flowing out of the second cooling water channel 22 and the fourth cooling water channel 42 flows back to the second drive component 8 through the second interface 62 and the fourth interface 64. The second refrigerant channel 21 and the second cooling water channel 22 can exchange heat, and the fourth refrigerant channel 41 and the fourth cooling water channel 42 can exchange heat, thereby achieving the cooling of the power battery 109 through the first compressor 5 and the second compressor 6.

[0173] The twelfth working mode can be the single power battery 109 cooling mode one. This mode is suitable when the cooling demand of the power battery 109 is low. In this mode, the fifth circuit 105 is connected. The refrigerant in the fifth circuit 105 can circulate along the first compressor 5, the fifth expansion valve 95, the second condenser 56, the first expansion valve 91, and the second refrigerant flow channel 21. The first multi-way valve 60 can connect the second interface 62 and the fourth interface 64, and the fifth interface 65 and the first interface 61. The cooling water can flow sequentially along the second drive component 8, the power battery 109, the fifth interface 65, and the first interface 61 under the action of the second drive component 8, and through the second cooling water flow channel 22 and the fourth cooling water flow channel 42. Then it flows back to the second drive component 8 through the second interface 62 and the fourth interface 64. The second refrigerant flow channel 21 and the second cooling water flow channel 22 can exchange heat, thereby realizing the cooling of the power battery 109.

[0174] The thirteenth working mode can be a single power battery 109 cooling mode two. This mode is suitable when the cooling demand of the power battery 109 is high. In this mode, the second branch 107 is connected, the fifth circuit 105 is connected, and the fourth circuit 104 is connected. The refrigerant can circulate along the second compressor 6, the third expansion valve 93, the first condenser 55, the second expansion valve 92, and the fourth refrigerant flow channel 41. In the fifth circuit 105, the refrigerant can circulate along the first compressor 5, the fifth expansion valve 95, the second condenser 56, the first expansion valve 91, and the second refrigerant flow channel 21. The first multi-way valve 60 can enable the second... The second interface 62 is connected to the fourth interface 64, and the fifth interface 65 is connected to the first interface 61. Under the action of the second driving component 8, the cooling water can circulate sequentially along the second driving component 8, the power battery 109, the fifth interface 65, the first interface 61, the second cooling water channel 22 and the fourth cooling water channel 42, the second interface 62, and the fourth interface 64. The second refrigerant channel 21 and the second cooling water channel 22 can exchange heat, and the fourth refrigerant channel 41 and the fourth cooling water channel 42 can exchange heat, thereby achieving the cooling of the power battery 109 through the first compressor 5 and the second compressor 6.

[0175] The fourteenth working mode can be the single power battery 109 cooling mode three. This mode is suitable for low ambient temperature. In this mode, the first multi-way valve 60 can connect the fifth port 65 and the eighth port 68, and the ninth port 69 and the fourth port 64. The cooling water can circulate sequentially along the second drive component 8, the power battery 109, the fifth port 65, the eighth port 68, the radiator 86, the ninth port 69, and the fourth port 64 under the action of the second drive component 8. The cooling water can dissipate heat at the radiator 86 to reduce the temperature and achieve cooling of the power battery 109.

[0176] The fifteenth operating mode can be a cooling mode for the power battery 109, motor 88, and electronic control 89. This mode is suitable for low ambient temperatures. In this mode, the first multi-way valve 60 can connect the fifth port 65 to the sixth port 66, the seventh port 67 to the eighth port 68, and the ninth port 69 to the fourth port 64. Cooling water can circulate sequentially along the second drive unit 8, power battery 109, fifth port 65, sixth port 66, third drive unit 9, electronic control 89, motor 88, seventh port 67, eighth port 68, radiator 86, ninth port 69, and fourth port 64 under the action of the second drive unit 8 and / or the third drive unit 9. The cooling water can dissipate heat at the radiator 86 to reduce the temperature and achieve cooling of the power battery 109, motor 88, and electronic control 89.

[0177] The sixteenth working mode can be the cooling mode for motor 88 and electronic control 89. This mode is suitable for low ambient temperatures. In this mode, the first multi-way valve 60 can connect the seventh port 67 and the eighth port 68, and the ninth port 69 and the sixth port 66. The cooling water can circulate sequentially along the third driver 9, motor 88, electronic control 89, seventh port 67, eighth port 68, radiator 86, ninth port 69, and sixth port 66 under the action of the third driver 9. The cooling water can dissipate heat at the radiator 86 to reduce the temperature and achieve cooling of motor 88 and electronic control 89.

[0178] The thermal management system 100 can realize the independent dual-temperature zone control function of the vehicle to meet the air conditioning needs of different areas of different passenger compartments.

[0179] The crew cabin achieves staged heating via a non-coupled dual-compressor heat pump through a switching circuit consisting of the first heat exchanger 10, the third heat exchanger 30, the second heat exchanger 20, the fourth heat exchanger 40, and the first multi-way valve 60. It can also utilize waste heat from the motor 88, the electronic control unit 89, the power battery 109, and ambient heat. Furthermore, it has multiple heat sources from the first heater 82 and the second heater 83, which improves the energy efficiency of the thermal management system 100 and meets the heating requirements of the crew cabin.

[0180] The second heat exchanger 20 and the fourth heat exchanger 40 meet the cooling power requirements of the power battery 109 under different cooling conditions. Dual-compressor cooling is achieved through the start / stop and power regulation of the second heat exchanger 20 and the fourth heat exchanger 40. The second heat exchanger 20 and the fourth heat exchanger 40 regulate the amount of refrigerant entering through the first expansion valve 91 and the second expansion valve 92 installed at the front end, thus achieving power regulation. When the ambient temperature is low, the circuit is switched through the first multi-way valve 60, utilizing the cooling fan 87 to dissipate heat externally, achieving passive cooling of the power battery 109.

[0181] The fifth heat exchanger 50 and the second heater 83 enable active heating of the thermal management system 100. The fifth heat exchanger 50 meets the active heating requirements of the power battery 109, and the independent start / stop and power adjustment of the fifth heat exchanger 50 and the second heater 83 can meet the different heating power requirements of the power battery 109 under different ambient temperatures.

[0182] By switching the operating mode of the first multi-way valve 60, the circuit containing the motor 88 and the electronic control unit 89 is connected to the second heat exchanger 20 and the fourth heat exchanger 40, enabling the utilization of waste heat from the motor 88 and the electronic control unit 89. Similarly, by switching the circuit using the first multi-way valve 60, the power battery 109 is connected to the motor 88 and the electronic control unit 89, utilizing the high water temperature of the motor 88 and the electronic control unit 89 to passively heat the power battery 109. The expansion tank 96 and the heater tank 97 enable the thermal management system 100 to perform liquid replenishment and venting functions.

[0183] The vehicle according to the present invention includes the thermal management system 100 of the above embodiments. Through the thermal management system 100 of this application, multiple heating modes can be realized, and the passenger compartment and the power battery 109 can be heated step by step. It has a high degree of integration and can realize the utilization of waste heat from the motor 88, the electronic control 89, and the power battery 109. It can significantly improve the energy utilization efficiency of the thermal management system 100, realize the comprehensive utilization of thermal energy, and reduce energy consumption.

[0184] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0185] In the description of this invention, "first feature" and "second feature" may include one or more of the features.

[0186] In the description of this invention, "a plurality of" means two or more.

[0187] In the description of this invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0188] In the description of this invention, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature.

[0189] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0190] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A thermal management system (100), characterized in that, include: The first refrigerant circulation module (1) includes the following components connected to and forming a first loop (101): a first compressor (5), a first refrigerant flow channel (11) of a first heat exchanger (10), a first expansion valve (91), and a second refrigerant flow channel (21) of a second heat exchanger (20); The second refrigerant circulation module (2) includes the following components connected to and forming a second loop (102): a second compressor (6), a third refrigerant flow channel (31) of a third heat exchanger (30), a second expansion valve (92), and a fourth refrigerant flow channel (41) of a fourth heat exchanger (40). The first cooling water circulation module (3) includes the following components connected to form a third loop (103): a first drive unit (7), a third cooling water channel (32) of the third heat exchanger (30), a first cooling water channel (12) of the first heat exchanger (10), a first heater (82), and a warm air core (84); a fifth cooling water channel (51) of a fifth heat exchanger (50) is provided between the first heater (82) and the first drive unit (7), and the fifth cooling water channel (51) is connected in parallel with the warm air core (84); The second cooling water circulation module (4) is equipped with a first multi-way valve (60), which includes a first port (61), a second port (62), a third port (63), a fourth port (64), a fifth port (65), a sixth port (66), and a seventh port (67). A fourth cooling water flow channel (42) of the fourth heat exchanger (40) is provided between the first port (61) and the second port (62). The second cooling water flow channel (22) of the second heat exchanger (20) is connected to the fourth cooling water flow channel (47). The cooling water channels (42) are arranged in parallel; a sixth cooling water channel (52) of the fifth heat exchanger (50) is provided between the third interface (63) and the fourth interface (64), and a second heater (83) is arranged in parallel with the sixth cooling water channel (52); a second driving component (8) and a power battery (109) are provided between the fourth interface (64) and the fifth interface (65); a third driving component (9), a motor (88), and an electronic control (89) are provided between the sixth interface (66) and the seventh interface (67).

2. The thermal management system (100) according to claim 1, characterized in that, The second refrigerant circulation module (2) further includes: a first shut-off valve (80), a third expansion valve (93), a first condenser (55), a fourth expansion valve (94), and an evaporator (54). The first shut-off valve (80) is located in the second circuit (102) and between the third refrigerant flow channel (31) and the second expansion valve (92). The second compressor (6), the third expansion valve (93), the first condenser (55), the fourth expansion valve (94), and the evaporator (54) form a fourth circuit (104). The first shut-off valve (80) is connected in parallel with the first condenser (55).

3. The thermal management system (100) according to claim 2, characterized in that, The fourth expansion valve (94) and the evaporator (54) form a first branch (106), and the second expansion valve (92) and the fourth refrigerant channel (41) form a second branch (107). The first branch (106) and the second branch (107) are connected in parallel.

4. The thermal management system (100) according to claim 2, characterized in that, There are multiple evaporators (54) and multiple fourth expansion valves (94). The multiple evaporators (54) and multiple fourth expansion valves (94) correspond one-to-one to form multiple first branches (106), and the multiple first branches (106) are connected in parallel.

5. The thermal management system (100) according to claim 2, characterized in that, The first refrigerant circulation module (1) further includes: a second shut-off valve (81), a fifth expansion valve (95), and a second condenser (56). The second shut-off valve (81) is located in the first circuit (101) and between the first refrigerant flow channel (11) and the first expansion valve (91). The fifth expansion valve (95) is connected in series with the second condenser (56) to form a third branch. The third branch is connected between the first refrigerant flow channel (11) and the first expansion valve (91) and is connected in parallel with the second shut-off valve (81).

6. The thermal management system (100) according to claim 4, characterized in that, Also includes: Multiple air supply components (85), multiple warm air cores (84), multiple warm air cores (84) are connected in parallel, and multiple warm air cores (84), multiple evaporators (54), and multiple air supply components (85) correspond one to one.

7. The thermal management system (100) according to claim 1, characterized in that, The first multi-way valve (60) further includes an eighth port (68) and a ninth port (69). The second cooling water circulation module (4) further includes a radiator (86), and the radiator (86) is provided between the eighth port (68) and the ninth port (69).

8. The thermal management system (100) according to claim 1, characterized in that, The first multi-way valve (60) further includes a tenth port (71), and the second cooling water circulation module (4) further includes an expansion tank (96), which is connected to the tenth port (71).

9. The thermal management system (100) according to claim 1, characterized in that, The first cooling water circulation module (3) further includes: a second multi-way valve (70), the second multi-way valve (70) includes: an eleventh port (72), a twelfth port (73), and a thirteenth port (75), the eleventh port (72) is connected to the first heater (82), the twelfth port (73) is connected to the warm air core (84), and the thirteenth port (75) is connected to the fifth cooling water channel (51); And / or, the second cooling water circulation module (4) further includes: a third multi-way valve (74), the third multi-way valve (74) including: a fourteenth port (76), a fifteenth port (77), and a sixteenth port (98), the fourteenth port (76) being connected to the sixth cooling water flow channel (52), the fifteenth port (77) being connected to the fourth port (64), and the sixteenth port (98) being connected to the second drive unit (8).

10. A vehicle, characterized in that, Includes a thermal management system (100) according to any one of claims 1-9.

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