Vehicle thermal management system and vehicle

Abstract

The invention provides a vehicle thermal management system and a vehicle. The vehicle thermal management system comprises an engine cooling loop, a low-temperature loop, a refrigerant loop, a heating loop, a seven-way valve and a two-position four-way valve. Different valve ports communicated with the seven-way valve and the two-position four-way valve are switched to be communicated with part or all of an engine cooling loop, a heating loop, a low-temperature loop and a refrigerant loop; a seven-way valve and a two-position four-way valve are arranged to be connected with an engine cooling loop, a heating loop, a low-temperature loop and a refrigerant loop, and different valve ports of the seven-way valve and the two-position four-way valve are switched and communicated according to the heat dissipation or heating requirements of all parts and spaces of a vehicle. Therefore, part or all of the engine cooling loop, the heating loop, the low-temperature loop and the refrigerant loop are communicated, multiple heat management modes are achieved, the energy of the whole vehicle is efficiently utilized on the premise that the heat management requirements of all parts of the vehicle are met, the number of the valve bodies is reduced, and the cost is reduced. Therefore, the space requirement and the complexity of the whole thermal management system are reduced.

Description

Technical Field

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

[0002] With the continuous development of new energy vehicle technology, new energy vehicles have become a common and indispensable means of transportation in people's daily lives. Hybrid / extended-range vehicles include both engine and battery dual power sources, which generate a lot of heat. In order to ensure the safety and reliability of various components of the vehicle, it is necessary to perform thermal management on various components of the vehicle to maintain them within a reasonable operating temperature range. For example, the discharge efficiency of the battery is significantly low in a low temperature environment, so it is necessary to heat or keep it warm to improve its discharge efficiency. The battery also has certain safety hazards in a high temperature environment, so it needs to be cooled.

[0003] For hybrid / extended-range vehicles, their engines, motors, and batteries all generate heat when working and need to be dissipated, and the batteries need to be heated in low-temperature environments. The car cabin needs to be heated in low-temperature environments and needs to be dissipated in high-temperature environments. How to efficiently utilize the heat generated inside the car to meet the vehicle's thermal management needs and minimize energy consumption is an important technical issue in the field of thermal management technology. Summary of the invention

[0004] In order to solve the above technical problems, the present application is proposed. The embodiments of the present application provide a vehicle thermal management system and a vehicle.

[0005] According to one aspect of the present application, a vehicle thermal management system is provided, comprising: an engine cooling circuit, the engine cooling circuit is used to dissipate heat from the engine; a low-temperature circuit, the low-temperature circuit is used to manage the temperature of the battery and the electric drive system; a refrigerant circuit, the refrigerant circuit is used to provide heat or absorb heat using a refrigerant; a heating circuit, the heating circuit is used to provide heat to the passenger compartment, wherein the heating circuit comprises a two-position four-way valve, the two-position four-way valve connects the heating circuit, the low-temperature circuit and the engine cooling circuit; a seven-way valve; wherein the seven-way valve connects the heating circuit, the low-temperature circuit and the refrigerant circuit, and switches to connect different valve ports of the seven-way valve to connect part or all of the heating circuit, the low-temperature circuit and the refrigerant circuit.

[0006] In one embodiment, the low-temperature circuit includes a battery circuit, and the battery circuit includes a connected battery water pump and a battery cooling channel; wherein the inlet of the battery water pump is connected to the valve port 2 of the seven-way valve, and the outlet of the battery cooling channel is connected to the valve port 3 of the seven-way valve.

[0007] In one embodiment, the low-temperature circuit includes an electric drive circuit, and the electric drive circuit includes a low-temperature radiator, a side low-temperature radiator, a motor water pump and an electric drive system cooling channel that are connected in sequence; wherein the low-temperature radiator and the side low-temperature radiator are arranged in parallel, the outlet of the electric drive system cooling channel is connected to the valve port 1 of the seven-way valve, the inlet of the low-temperature radiator and the side low-temperature radiator is connected to the valve port 6 of the seven-way valve and the valve port 3 of the two-position four-way valve, and the inlet of the motor water pump is connected to the valve port 7 of the seven-way valve.

[0008] In one embodiment, the electric drive circuit further includes a first coolant three-way proportional valve, and the first coolant three-way proportional valve connects the heating circuit, the motor water pump and the electric drive system cooling channel.

[0009] In one embodiment, the refrigerant circuit includes a compressor, a water-cooled condenser, a chiller and an evaporator connected in sequence, wherein the evaporator and the chiller are arranged in parallel, and the inlet and outlet of the liquid flow channel of the chiller are respectively connected to the valve port 4 and the valve port 5 of the seven-way valve.

[0010] In one embodiment, the refrigerant circuit further includes a first coaxial tube and a second coaxial tube; wherein the first coaxial tube is arranged between the inlet of the evaporator and the outlet of the water-cooled condenser, and the second coaxial tube is arranged between the outlet of the evaporator and the inlet of the compressor.

[0011] In one embodiment, the heating circuit includes a connected warm air water pump, a PTC and a water heating core; wherein the inlet of the warm air water pump is connected to the valve port 4 of the two-position four-way valve, the outlet of the water heating core is connected to the water-cooled condenser, and the end of the water-cooled condenser away from the water heating core is connected to the valve port 1 of the two-position four-way valve.

[0012] In one embodiment, the heating circuit further includes a second coolant three-way proportional valve, and the second coolant three-way proportional valve connects the water-cooled condenser, the water heating core and the low-temperature circuit.

[0013] In one embodiment, the engine cooling circuit includes an engine water pump, an engine cooling channel, a thermostat and a high-temperature radiator connected in sequence; wherein the outlet of the engine cooling channel is connected to the heating circuit, and the inlet of the engine water pump is connected to the valve port 2 of the two-position four-way valve.

[0014] According to another aspect of the present application, a vehicle is provided, comprising: an engine, a motor, a battery, and the vehicle thermal management system described in any one of the above.

[0015] Compared with the prior art, the vehicle thermal management system and vehicle provided by the present application have the following beneficial effects: 1. By setting a seven-way valve and a two-position four-way valve, the engine cooling circuit, heating circuit, low-temperature circuit and refrigerant circuit are connected, and different valve ports of the seven-way valve and the two-position four-way valve are switched to connect part or all of the engine cooling circuit, heating circuit, low-temperature circuit and refrigerant circuit; that is, by setting a single seven-way valve and a two-position four-way valve to connect the engine cooling circuit, heating circuit, low-temperature circuit and refrigerant circuit, different valve ports of the seven-way valve and the two-position four-way valve are switched according to the heat dissipation or heating requirements of various components and spaces of the vehicle, thereby achieving partial or full connection of the engine cooling circuit, heating circuit, low-temperature circuit and refrigerant circuit, and then realizing multiple thermal management modes, efficiently utilizing the energy of the entire vehicle while meeting the thermal management requirements of various components of the vehicle, and reducing the number of valve bodies, thereby reducing the space requirement and complexity of the entire thermal management system.

[0016] 2. By setting up a single water-cooled condenser and an electric drive circuit in parallel, only a two-layer structure of a low-temperature radiator and a high-temperature radiator is used to effectively increase the air intake and ensure the heat dissipation effect.

[0017] 3. Improve the cooling performance of the air conditioner by adding a side-mounted low-temperature radiator. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] By describing the embodiments of the present application in more detail in conjunction with the accompanying drawings, the above and other purposes, features and advantages of the present application will become more apparent. The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings, the same reference numerals generally represent the same components or steps.

[0019] Figure 1 It is a schematic diagram of the structure of a vehicle thermal management system provided by an exemplary embodiment of the present application.

[0020] Figure 2 It is a front view of the radiator structure of a vehicle thermal management system provided by an exemplary embodiment of the present application.

[0021] Figure 3 It is a top view of the radiator structure of a vehicle thermal management system provided by an exemplary embodiment of the present application.

[0022] Figure 4 It is a schematic diagram of a working mode structure of a vehicle thermal management system provided by an exemplary embodiment of the present application.

[0023] Figure 5 It is a schematic diagram of another working mode structure of a vehicle thermal management system provided by an exemplary embodiment of the present application.

[0024] Figure 6It is a schematic diagram of another working mode structure of a vehicle thermal management system provided by an exemplary embodiment of the present application.

[0025] Figure 7 It is a schematic diagram of another working mode structure of a vehicle thermal management system provided by an exemplary embodiment of the present application.

[0026] Figure 8 It is a schematic diagram of another working mode structure of a vehicle thermal management system provided by an exemplary embodiment of the present application.

[0027] Fig. 9 It is a schematic diagram of another working mode structure of a vehicle thermal management system provided by an exemplary embodiment of the present application.

[0028] Fig.10 It is a schematic diagram of another working mode structure of a vehicle thermal management system provided by an exemplary embodiment of the present application.

[0029] Explanation of the reference numerals: 101, seven-way valve; 102, two-position four-way valve; 103, battery water pump; 104, battery cooling channel; 105, low-temperature radiator; 106, side-mounted low-temperature radiator; 107, motor water pump; 108, electric drive system cooling channel; 109, first coolant three-way proportional valve; 110, compressor; 111, water-cooled condenser; 112, evaporator; 113, first coaxial tube; 114, second coaxial tube; 115, drying tank; 116, first electronic expansion valve; 117, second electronic expansion valve; 118, heater water pump; 119, water heating core; 120, second coolant three-way proportional valve; 121, engine water pump; 122, engine cooling channel; 123, thermostat; 124, high-temperature radiator; 125, stop valve; 126, cooling fan. DETAILED DESCRIPTION

[0030] Below, the exemplary embodiments according to the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application, and it should be understood that the present application is not limited to the exemplary embodiments described here.

[0031] Figure 1 FIG. 1 is a schematic diagram of the structure of a vehicle thermal management system provided by an exemplary embodiment of the present application. Figure 1As shown, the vehicle thermal management system includes: an engine cooling circuit, a low-temperature circuit, a refrigerant circuit, a heating circuit and a seven-way valve 101; wherein, the engine cooling circuit is used to dissipate heat to the engine, the low-temperature circuit is used to manage the temperature of the battery and the electric drive system, the refrigerant circuit is used to provide heat or absorb heat using a refrigerant, and the heating circuit is used to provide heat to the passenger compartment. The seven-way valve 101 connects the heating circuit, the low-temperature circuit and the refrigerant circuit. The heating circuit includes a two-position four-way valve 102, and the two-position four-way valve 102 connects the heating circuit, the low-temperature circuit and the engine cooling circuit; different valve ports of the seven-way valve 101 are switched to connect part or all of the heating circuit, the low-temperature circuit and the refrigerant circuit.

[0032] The vehicle thermal management system of the present application can be applied to hybrid vehicles or extended-range vehicles, wherein both hybrid vehicles and extended-range vehicles include engines, motors, and batteries. The vehicle thermal management system provided in the present application includes an engine cooling circuit, a low-temperature circuit, a refrigerant circuit, and a heating circuit. The engine cooling circuit is used to dissipate heat from the engine, the low-temperature circuit is used to manage the temperature of the battery and the electric drive system, the refrigerant circuit is used to provide heat or absorb heat using a refrigerant, and the heating circuit is used to provide heat to the passenger compartment. In addition, the present application connects the engine cooling circuit, the low-temperature circuit, the refrigerant circuit, and the heating circuit by setting a seven-way valve 101 and a two-position four-way valve 102 to achieve connectivity of multiple circuits, and connects part or all of the engine cooling circuit, the low-temperature circuit, the refrigerant circuit, and the heating circuit by switching different valve ports of the seven-way valve 101 and the two-position four-way valve 102, thereby utilizing the seven-way valve 101 and the two-position four-way valve 102 to achieve heat exchange between multiple circuits, which can not only effectively reduce the number of valve bodies used to save costs, but also reduce the complexity of the thermal management system. At the same time, multi-circuit comprehensive management can be utilized to more effectively perform thermal management on each circuit, thereby improving the thermal management efficiency and effect of the vehicle thermal management system, and then reducing thermal management energy consumption.

[0033] The present application provides a vehicle thermal management system, including an engine cooling circuit, a low-temperature circuit, a refrigerant circuit, a heating circuit, a seven-way valve 101 and a two-position four-way valve 102; wherein the engine cooling circuit is used to dissipate heat from the engine, the low-temperature circuit is used to manage the temperature of the battery and the electric drive system, the refrigerant circuit is used to provide heat or absorb heat using a refrigerant, and the heating circuit is used to provide heat to the passenger compartment. The seven-way valve 101 and the two-position four-way valve 102 are connected to the engine cooling circuit, the heating circuit, the low-temperature circuit and the refrigerant circuit, and the different valve ports of the seven-way valve 101 and the two-position four-way valve 102 are switched to connect the engine cooling circuit, the heating circuit, the low-temperature circuit and the refrigerant circuit. circuit and part or all of the refrigerant circuit; that is, by setting a single seven-way valve 101 and a two-position four-way valve 102 to connect the engine cooling circuit, heating circuit, low-temperature circuit and refrigerant circuit, different valve ports of the seven-way valve 101 and the two-position four-way valve 102 are switched according to the heat dissipation or heating requirements of various components and spaces of the vehicle, thereby realizing partial or full connection of the engine cooling circuit, heating circuit, low-temperature circuit and refrigerant circuit, and then realizing multiple thermal management modes, efficiently utilizing the energy of the entire vehicle while meeting the thermal management requirements of various components of the vehicle, and reducing the number of valve bodies, thereby reducing the space requirement and complexity of the entire thermal management system.

[0034] In one embodiment, if Figure 1 As shown, the low-temperature circuit includes a battery circuit, and the battery circuit includes a connected battery water pump 103 and a battery cooling channel 104; wherein the inlet of the battery water pump 103 is connected to the valve port 2 of the seven-way valve 101, and the outlet of the battery cooling channel 104 is connected to the valve port 3 of the seven-way valve 101.

[0035] The low-temperature circuit of the present application includes a battery circuit, and the battery circuit includes a battery water pump 103 and a battery cooling channel 104. The battery water pump 103 and the battery cooling channel 104 form a circulation circuit through a connected pipeline, and the inlet of the battery water pump 103 is connected to the valve port 2 of the seven-way valve 101, and the outlet of the battery cooling channel 104 is connected to the valve port 3 of the seven-way valve 101. The seven-way valve 101 can be used to achieve closed-loop connection of the battery circuit and connection between the battery circuit and other circuits.

[0036] In one embodiment, if Figure 1 As shown, the low-temperature circuit includes an electric drive circuit, and the electric drive circuit includes a connected low-temperature radiator 105, a side low-temperature radiator 106, a motor water pump 107 and an electric drive system cooling channel 108; wherein the low-temperature radiator 105 and the side low-temperature radiator 106 are arranged in parallel, the outlet of the electric drive system cooling channel 108 is connected to the valve port 1 of the seven-way valve 101, the inlet of the low-temperature radiator 105 and the side low-temperature radiator 106 is connected to the valve port 6 of the seven-way valve 101 and the valve port 3 of the two-position four-way valve 102, and the inlet of the motor water pump 107 is connected to the valve port 7 of the seven-way valve 101.

[0037] The low-temperature circuit of the present application includes an electric drive circuit, which includes a low-temperature radiator 105, a side low-temperature radiator 106, a motor water pump 107 and an electric drive system cooling channel 108. The low-temperature radiator 105, the side low-temperature radiator 106, the motor water pump 107 and the electric drive system cooling channel 108 are connected through a connecting pipeline to form a circulation loop, wherein the low-temperature radiator 105 and the side low-temperature radiator 106 are arranged in parallel to ensure the heat dissipation effect of the low-temperature circuit, and the outlet of the electric drive system cooling channel 108 is connected to the valve port 1 of the seven-way valve 101, the inlet of the low-temperature radiator 105 and the side low-temperature radiator 106 is connected to the valve port 6 of the seven-way valve 101 and the valve port 3 of the two-position four-way valve 102, and the inlet of the motor water pump 107 is connected to the valve port 7 of the seven-way valve 101. The closed-loop connection of the electric drive circuit and the connection of the electric drive circuit with other circuits can be achieved through the seven-way valve 101 and the two-position four-way valve 102.

[0038] In one embodiment, if Figure 1 As shown, the electric drive circuit also includes a first coolant three-way proportional valve 109 , which connects the heating circuit, the motor water pump 107 and the electric drive system cooling channel 108 .

[0039] A first coolant three-way proportional valve 109 is also provided in the electric drive circuit of the present application, through which the motor water pump 107, the electric drive system cooling channel 108 and the heating circuit are connected to achieve closed-loop connectivity of the electric drive circuit and connectivity between the electric drive circuit and the heating circuit.

[0040] In one embodiment, if Figure 1 As shown, the refrigerant circuit includes a compressor 110, a water-cooled condenser 111, a chiller and an evaporator 112 which are connected in sequence, wherein the evaporator 112 and the chiller are arranged in parallel, and the inlet and outlet of the liquid flow channel of the chiller are respectively connected to the valve port 4 and the valve port 5 of the seven-way valve 101.

[0041] The refrigerant circuit in the present application includes a compressor 110, a water-cooled condenser 111, a chiller and an evaporator 112. The compressor 110, the water-cooled condenser 111, the chiller and the evaporator 112 are connected in sequence through pipelines to form a circulation circuit; wherein the evaporator 112 and the chiller are arranged in parallel to achieve air conditioning cooling, refrigerant heat dissipation and heating heat recovery, and the inlet and outlet of the liquid flow channel of the chiller are respectively connected to the valve port 4 and the valve port 5 of the seven-way valve 101 to achieve heat exchange between the refrigerant circuit and other circuits.

[0042] In one embodiment, if Figure 1As shown, the refrigerant circuit also includes a first coaxial tube 113 and a second coaxial tube 114; wherein the first coaxial tube 113 is arranged between the inlet of the evaporator 112 and the outlet of the water-cooled condenser 111, and the second coaxial tube 114 is arranged between the outlet of the evaporator 112 and the inlet of the compressor 110.

[0043] The present application arranges a first coaxial tube 113 and a second coaxial tube 114 between the inlet of the evaporator 112 and the outlet of the water-cooled condenser 111, and between the outlet of the evaporator 112 and the inlet of the compressor 110, respectively, and utilizes the first coaxial tube 113 and the second coaxial tube 114 to increase the supercooling of the liquid refrigerant to improve the refrigeration effect.

[0044] Optional, such as Figure 1 As shown, the refrigerant circuit of the present application may also include a drying tank 115, which is arranged at the outlet of the water-cooled condenser 111. The drying tank 115 is used to store excess liquid refrigerant so as to compensate and adjust the profit and loss of liquid refrigerant when the working conditions change. Figure 1 As shown, the refrigerant circuit of the present application may also include a first electronic expansion valve 116 and a second electronic expansion valve 117. The first electronic expansion valve 116 (EXV1) is arranged between the first coaxial tube 113 and the evaporator 112, and the second electronic expansion valve 117 (EXV2) is arranged between the water-cooled condenser 111 and the chiller. The first electronic expansion valve 116 and the second electronic expansion valve 117 are used to adjust the refrigerant flow in the refrigerant circuit to achieve temperature adjustment.

[0045] In one embodiment, if Figure 1 As shown, the heating circuit includes a connected warm air water pump 118, a PTC and a water heating core 119; wherein, the inlet of the warm air water pump 118 is connected to the valve port 4 of the two-position four-way valve 102, the outlet of the water heating core 119 is connected to the water-cooled condenser 111, and the end of the water-cooled condenser 111 away from the water heating core 119 is connected to the valve port 1 of the two-position four-way valve 102.

[0046] The heating circuit in the present application includes a warm air water pump 118, a PTC and a water heating core 119, and the warm air water pump 118, the PTC and the water heating core 119 are connected in sequence through a cooling pipeline to form a circulation circuit; wherein, the inlet of the warm air water pump 118 is connected to the valve port 4 of the two-position four-way valve 102, and the outlet of the water heating core 119 is connected to the water-cooled condenser 111, and the end of the water-cooled condenser 111 away from the water heating core 119 is connected to the valve port 1 of the two-position four-way valve 102, and the water-cooled condenser 111 is used to realize the heat exchange between the heating circuit and the refrigerant circuit to realize heating, and the two-position four-way valve 102 can be used to realize the heat exchange between the engine cooling circuit and the low-temperature circuit.

[0047] In one embodiment, if Figure 1As shown, the heating circuit also includes a second coolant three-way proportional valve 120, which connects the water-cooled condenser 111, the water heating core 119 and the low-temperature circuit.

[0048] The present application sets a second coolant three-way proportional valve 120 to connect the water-cooled condenser 111, the water heating core 119 and the low-temperature circuit (specifically the inlet of the battery water pump 103) to achieve connectivity between the heating circuit and the battery circuit.

[0049] In one embodiment, if Figure 1 As shown, the engine cooling circuit includes an engine water pump 121, an engine cooling channel 122, a thermostat 123 and a high-temperature radiator 124 which are connected in sequence; wherein, the outlet of the engine cooling channel 122 is connected to the heating circuit, and the inlet of the engine water pump 121 is connected to the valve port 2 of the two-position four-way valve 102.

[0050] The engine cooling circuit of the present application includes an engine water pump 121, an engine cooling channel 122, a thermostat 123 and a high-temperature radiator 124. The engine water pump 121, the engine cooling channel 122, the thermostat 123 and the high-temperature radiator 124 are connected in sequence through cooling pipes to form a circulation loop. The engine cooling channel 122 is a heat dissipation water channel structure arranged at the engine. The coolant flows out from the outlet of the engine water pump 121, passes through the engine cooling channel 122, the high-temperature radiator 124 and the thermostat 123, and then returns to the engine water pump 121, forming a large cycle of the engine cooling circuit. The coolant flows out from the outlet of the engine water pump 121, passes through the engine cooling channel 122 and the thermostat 123, and then directly returns to the engine water pump 121, forming a small cycle of the engine cooling circuit. Among them, the outlet of the engine cooling channel 122 is connected to the heating circuit. Specifically, Figure 1 As shown, the outlet of the engine cooling flow channel 122 is connected to the outlet of the warm air water pump 118 in the heating circuit through the stop valve 125, the inlet of the engine water pump 121 is connected to the thermostat 123, the inlet of the engine water pump 121 is connected to the valve port 2 of the two-position four-way valve 102, and the inlet of the warm air water pump is connected to the valve port 4 of the two-position four-way valve 102. The stop valve 125 and the two-position four-way valve 102 are used to heat the water heating core 119 of the engine cooling circuit to increase the temperature of the warm air circuit, so as to improve the utilization rate of the engine heat.

[0051] Optional, such as Figure 1 , Figure 2 and Figure 3 As shown, the present application can arrange the high-temperature radiator 124, the low-temperature radiator 105 and the side-mounted low-temperature radiator 106 in parallel, and use the cooling fan 126 for unified heat dissipation to improve the utilization rate of the cooling fan 126 and reduce the number of cooling fans 126 arranged.

[0052] Based on the above vehicle thermal management system, the present application can implement a variety of thermal management modes, some of which are described below as examples: (1) Pure electric mode 1: like Figure 4 As shown, at this time, the engine is not working, and the engine cooling circuit is not involved in the work, the valve port 1 and the valve port 2 of the first coolant three-way proportional valve 109 are connected, the valve port 1 and the valve port 2 of the second coolant three-way proportional valve 120 are connected, the valve port 1 and the valve port 3 of the second coolant three-way proportional valve 120 are connected, and the connection opening of the valve port 1 and the valve port 3 of the second coolant three-way proportional valve 120 is smaller than the opening of the valve port 1 and the valve port 2, the valve port 1 and the valve port 4 of the two-position four-way valve 102 are connected, the valve port 1 and the valve port 4 of the seven-way valve 101 are connected, the valve port 5 and the valve port 7 of the seven-way valve 101 are connected, the valve port 2 and the valve port 3 of the seven-way valve 101 are connected, and the stop valve 125 is closed.

[0053] For the refrigerant circuit, the high-temperature and high-pressure refrigerant at the outlet of the compressor 110 is converted into a high-pressure and low-temperature two-phase refrigerant after heat exchange in the water-cooled condenser 111. The drying tank 115 stores the excess liquid refrigerant. The high-pressure and low-temperature two-phase refrigerant passing through the drying tank 115 is converted into a low-pressure and low-temperature two-phase refrigerant after throttling by the second electronic expansion valve 117, and is heat exchanged with the coolant of the electric drive circuit in the chiller. The low-pressure and low-temperature gaseous refrigerant at the outlet of the chiller returns to the compressor 110 to form a refrigerant circuit.

[0054] For the electric drive circuit, the outlet coolant of the electric drive system cooling channel 108 enters the chiller through valve port 1 and valve port 4 of the seven-way valve 101 to release heat into the refrigerant circuit, and the coolant at the outlet of the chiller returns to the electric drive system cooling channel 108 through valve port 5 and valve port 7 of the seven-way valve 101, the motor water pump 107, and valve port 1 and valve port 2 of the first coolant three-way proportional valve 109 to absorb heat, thereby forming an electric drive circuit.

[0055] For the heating circuit, the coolant at the outlet of the heater water pump 118 is heated by PTC, exchanges heat with the air in the passenger compartment through the water heating core 119, and then enters the water-cooled condenser 111 through valve ports 1 and 2 of the second coolant three-way proportional valve 120 to absorb heat from the refrigerant circuit, and returns to the heater water pump 118 through valve ports 1 and 4 of the two-position four-way valve 102 to form a heating circuit.

[0056] For the battery circuit, part of the high-temperature liquid diverted from valve port 1 and valve port 3 of the second coolant three-way proportional valve 120 enters the battery cooling channel 104 through the battery water pump 103 to exchange heat with the battery, and then returns to the battery water pump 103 through valve port 3 and valve port 2 of the seven-way valve 101 (at the same time, part of the diverted coolant merges into the heating circuit) to form a battery circuit.

[0057] In this mode, by fully opening valve port 1 and valve port 2 connected to the second coolant proportional three-way valve 120, or fully opening valve port 1 and valve port 3 connected to the second coolant proportional three-way valve 120, the heat pump and PTC only heat the passenger compartment or the battery; or the PTC does not work, and only the heat pump heats the passenger compartment and the battery; or the compressor 110 is shut down, the heat pump system does not work, and only the PTC heats the passenger compartment and the battery.

[0058] (2) Pure electric mode 2: like Figure 5 As shown, at this time, the engine is not working, and the engine cooling circuit is not involved in the work, the valve port 1 and the valve port 2 of the first coolant three-way proportional valve 109 are connected, the valve port 1 and the valve port 2 of the second coolant three-way proportional valve 120 are connected, the valve port 1 and the valve port 4 of the two-position four-way valve 102 are connected, the valve port 1 and the valve port 4 of the seven-way valve 101 are connected, the valve port 5 and the valve port 7 of the seven-way valve 101 are connected, the valve port 2 and the valve port 3 of the seven-way valve 101 are connected, and the stop valve 125 is closed.

[0059] For the refrigerant circuit, the high-temperature and high-pressure refrigerant at the outlet of the compressor 110 is converted into a high-pressure and low-temperature two-phase refrigerant after heat exchange in the water-cooled condenser 111. The drying tank 115 stores the excess liquid refrigerant. One path of the refrigerant passes through the first coaxial tube 113 to increase the degree of supercooling, and is throttled by the first electronic expansion valve 116 to become a low-pressure and low-temperature two-phase refrigerant. In the evaporator 112, it absorbs the heat of the air to reduce its temperature below the dew point, thereby reducing the moisture content of the air. The other path is throttled by the second electronic expansion valve 117 to become a low-pressure and low-temperature two-phase refrigerant, and is heat exchanged with the coolant of the electric drive circuit in the chiller. The refrigerant in the evaporator 112 is converted into a low-pressure and low-temperature gaseous superheated refrigerant after the second coaxial tube 114 increases the degree of supercooling and merges with the refrigerant at the outlet of the chiller to return to the compressor 110, thereby forming a refrigerant circuit.

[0060] For the electric drive circuit, the outlet coolant of the electric drive system cooling channel 108 enters the chiller through valve port 1 and valve port 4 of the seven-way valve 101 to release heat into the refrigerant circuit, and the coolant at the outlet of the chiller returns to the electric drive system cooling channel 108 through valve port 5 and valve port 7 of the seven-way valve 101, the motor water pump 107, and valve port 1 and valve port 2 of the first coolant three-way proportional valve 109 to absorb heat, thereby forming an electric drive circuit.

[0061] For the heating circuit, the coolant at the outlet of the heater water pump 118 passes through the PTC (not working), exchanges heat with the air in the passenger compartment through the water heating core 119, and then enters the water-cooled condenser 111 through valve ports 1 and 2 of the second coolant three-way proportional valve 120 to absorb heat from the refrigerant circuit, and returns to the heater water pump 118 through valve ports 1 and 4 of the two-position four-way valve 102 to form a heating circuit.

[0062] For the battery circuit, the coolant at the outlet of the battery water pump 103 enters the battery cooling channel 104 to equalize the temperature, and then returns to the battery water pump 103 through the valve port 3 and the valve port 2 of the seven-way valve 101 to form a battery circuit.

[0063] In this mode, the heat pump can also absorb electric drive heat and ambient heat at the same time by connecting valve port 1 and valve port 4, valve port 5 and valve port 6, valve port 3 and valve port 2 of the seven-way valve 101.

[0064] (3) Pure Electric Mode 3: like Figure 6 As shown, at this time, the engine is not working, and the engine cooling circuit is not working either, the valve port 1 and the valve port 2 of the first coolant three-way proportional valve 109 are connected, the valve port 1 and the valve port 2 of the second coolant three-way proportional valve 120 are connected, the valve port 1 and the valve port 4 of the two-position four-way valve 102 are connected, the valve port 1 and the valve port 2 of the seven-way valve 101 are connected, the valve port 3 and the valve port 4 of the seven-way valve 101 are connected, the valve port 5 and the valve port 7 of the seven-way valve 101 are connected, and the stop valve 125 is closed.

[0065] For the refrigerant circuit, the high-temperature and high-pressure refrigerant at the outlet of the compressor 110 is converted into a high-pressure and low-temperature two-phase refrigerant after heat exchange in the water-cooled condenser 111. The drying tank 115 stores the excess liquid refrigerant. One path of the refrigerant passes through the first coaxial tube 113 to increase the degree of supercooling, and is throttled by the first electronic expansion valve 116 to become a low-pressure and low-temperature two-phase refrigerant. In the evaporator 112, it absorbs the heat of the air to reduce its temperature below the dew point, thereby reducing the moisture content of the air. The other path is throttled by the second electronic expansion valve 117 to become a low-pressure and low-temperature two-phase refrigerant, and is heat exchanged with the coolant of the electric drive circuit in the chiller. The refrigerant in the evaporator 112 is converted into a low-pressure and low-temperature gaseous superheated refrigerant after the second coaxial tube 114 increases the degree of supercooling and merges with the refrigerant at the outlet of the chiller to return to the compressor 110, thereby forming a refrigerant circuit.

[0066] For the low-temperature circuit, the outlet coolant of the electric drive system cooling channel 108 enters the battery cooling channel 104 through valve ports 1 and 2 of the seven-way valve 101 and the battery water pump 103 to exchange heat with the battery, and then enters the chiller through valve ports 3 and 4 of the seven-way valve 101 to exchange heat with the refrigerant. The coolant at the outlet of the chiller returns to the electric drive system cooling channel 108 through valve ports 5 and 7 of the seven-way valve 101, the motor water pump 107, and valve ports 1 and 2 of the first coolant three-way proportional valve 109 to absorb heat, forming a low-temperature circuit.

[0067] For the heating circuit, the coolant at the outlet of the heater water pump 118 enters the water heating core 119 through the PTC (not working) to exchange heat with the air in the passenger compartment, and then enters the water-cooled condenser 111 through valve port 1 and valve port 2 of the second coolant three-way proportional valve 120 to absorb the heat of the refrigerant circuit, and returns to the heater water pump 118 through valve port 1 and valve port 4 of the two-position four-way valve 102 to form a heating circuit.

[0068] In this mode, the valve ports 1 and 2, valve ports 3 and 4, and valve ports 5 and 6 of the seven-way valve 101 can be connected to release excess heat into the air through the low-temperature radiator 105 .

[0069] (4) Pure Electric Mode 4: like Figure 7 As shown, at this time, the engine is not working, and the engine cooling circuit is not involved in the work, the valve port 1 and the valve port 2 of the first coolant three-way proportional valve 109 are connected, the valve port 1 and the valve port 3 of the first coolant three-way proportional valve 109 are connected, the valve port 1 and the valve port 2 of the second coolant three-way proportional valve 120 are connected, the valve port 1 and the valve port 3 of the two-position four-way valve 102 are connected, the valve port 1 and the valve port 2 of the seven-way valve 101 are connected, the valve port 3 and the valve port 6 of the seven-way valve 101 are connected, the valve port 4 and the valve port 5 of the seven-way valve 101 are connected, and the stop valve 125 is closed.

[0070] For the refrigerant circuit, the high-temperature and high-pressure refrigerant at the outlet of the compressor 110 is converted into a high-pressure and low-temperature two-phase refrigerant after heat exchange in the water-cooled condenser 111. The drying tank 115 stores the excess liquid refrigerant. The refrigerant increases the degree of supercooling through the first coaxial tube 113. After throttling by the first electronic expansion valve 116, it is converted into a low-pressure and low-temperature two-phase refrigerant. In the evaporator 112, the refrigerant exchanges heat with the air in the passenger compartment to reduce the temperature of the passenger compartment. The refrigerant at the outlet of the evaporator 112 returns to the compressor 110 through the second coaxial tube 114 to form a refrigerant circuit.

[0071] For the low-temperature circuit, the coolant at the valve port 2 of the first coolant three-way proportional valve 109 enters the electric drive system cooling channel 108 for heat exchange, and then enters the battery cooling channel 104 through the valve ports 1 and 2 of the seven-way valve 101 and the battery water pump 103 to exchange heat with the battery. The coolant at the outlet of the battery cooling channel 104 enters the low-temperature radiator 105 through the valve ports 3 and 6 of the seven-way valve 101 to exchange heat with the air, and then returns the motor water pump 107 to the valve port 1 of the first coolant three-way proportional valve 109 to form a low-temperature circuit. In addition, the coolant at the valve port 3 of the first coolant three-way proportional valve 109 enters the water-cooled condenser 111 for heat exchange, and then merges with the coolant at the valve port 6 of the seven-way valve 101 through the valve port 1 and valve port 3 of the two-position four-way valve 102, enters the low-temperature radiator 105 and the side low-temperature radiator 106 for heat exchange with the air, and then returns to the valve port 1 of the first coolant three-way proportional valve 109 through the motor water pump 107, forming a water-cooled condenser circulation loop.

[0072] In this mode, the refrigerant circuit can be disabled, and the single battery and electric drive can be passively cooled.

[0073] (5) Hybrid / Extended Range Mode 1: like Figure 8 As shown, at this time, the engine is working, the valve port 1 and the valve port 2 of the first coolant three-way proportional valve 109 are connected, the valve port 1 and the valve port 2 of the second coolant three-way proportional valve 120 are connected, the valve port 1 and the valve port 3 of the second coolant three-way proportional valve 120 are connected, and the connection opening of the valve port 1 and the valve port 3 of the second coolant three-way proportional valve 120 is smaller than the opening of the valve port 1 and the valve port 2, the valve port 1 and the valve port 2 of the two-position four-way valve 102 are connected, the valve port 1 and the valve port 4 of the seven-way valve 101 are connected, the valve port 5 and the valve port 7 of the seven-way valve 101 are connected, the valve port 2 and the valve port 3 of the seven-way valve 101 are connected, and the stop valve 125 is opened.

[0074] For the refrigerant circuit, the high-temperature and high-pressure refrigerant at the outlet of the compressor 110 is converted into a high-pressure and low-temperature two-phase refrigerant after heat exchange in the water-cooled condenser 111. The drying tank 115 stores the excess liquid refrigerant. The refrigerant is throttled by the second electronic expansion valve 117 and converted into a low-pressure and low-temperature two-phase refrigerant. It is then heat exchanged with the coolant of the electric drive circuit in the chiller. The low-pressure and low-temperature gaseous refrigerant at the outlet of the chiller returns to the compressor 110 to form a refrigerant circuit.

[0075] For the electric drive circuit, the outlet coolant of the electric drive system cooling channel 108 enters the chiller through valve port 1 and valve port 4 of the seven-way valve 101 to release heat into the refrigerant circuit, and the coolant at the outlet of the chiller returns to the electric drive system cooling channel 108 through valve port 5 and valve port 7 of the seven-way valve 101, the motor water pump 107, and valve port 1 and valve port 2 of the first coolant three-way proportional valve 109 to absorb heat, thereby forming an electric drive circuit.

[0076] For the heating circuit, the coolant at the outlet of the engine cooling channel 122 enters the PTC through the stop valve 125 for further heating, then enters the water heating core 119 to exchange heat with the air in the passenger compartment, and then enters the water-cooled condenser 111 through the valve ports 1 and 2 of the second coolant three-way proportional valve 120 to absorb the heat of the refrigerant circuit, and returns to the engine cooling channel 122 through the valve ports 1 and 2 of the two-position four-way valve 102 and the engine water pump 121 to form a heating circuit.

[0077] For the battery circuit, part of the high-temperature liquid diverted from valve port 1 to valve port 3 of the second coolant three-way proportional valve 120 enters the battery cooling channel 104 through the battery water pump 103 to exchange heat with the battery, and then returns to the battery water pump 103 through valve port 3 and valve port 2 of the seven-way valve 101 (at the same time, part of the diverted coolant merges into the heating circuit), forming a battery circuit.

[0078] In this mode, by fully opening valve port 1 and valve port 2 connected to the second coolant proportional three-way valve 120, or fully opening valve port 1 and valve port 3 connected to the second coolant proportional three-way valve 120, the engine and PTC heat pump only heat the passenger compartment or the battery; or the PTC does not work, and only the engine and the heat pump heat the passenger compartment and the battery; or the compressor 110 is shut down, the heat pump system does not work, and only the engine heats the passenger compartment and the battery.

[0079] (6) Hybrid / Extended Range Mode 2: like Fig. 9 As shown, at this time, the engine is working, the refrigerant circuit is not working, the valve port 1 and the valve port 2 of the first coolant three-way proportional valve 109 are connected, the valve port 1 and the valve port 2 of the second coolant three-way proportional valve 120 are connected, the valve port 1 and the valve port 2 of the two-position four-way valve 102 are connected, the valve port 1 and the valve port 2 of the seven-way valve 101 are connected, the valve port 3 and the valve port 7 of the seven-way valve 101 are connected, the valve port 4 and the valve port 5 of the seven-way valve 101 are connected, and the stop valve 125 is opened.

[0080] For the low-temperature circuit, the outlet coolant of the electric drive system cooling channel 108 enters the battery cooling channel 104 through valve ports 1 and 2 of the seven-way valve 101 and the battery water pump 103 to exchange heat with the battery, and then returns to the electric drive system cooling channel 108 through valve ports 3 and 7 of the seven-way valve 101, the motor water pump 107, and valve ports 1 and 2 of the second coolant three-way proportional valve 120, forming a low-temperature circuit.

[0081] For the heating circuit, the coolant at the outlet of the engine cooling channel 122 enters the water heating core 119 after passing through the stop valve 125 and the PTC (not working) to exchange heat with the air in the passenger compartment, and then enters the water-cooled condenser 111 (not working) through the valve ports 1 and 2 of the second coolant three-way proportional valve 120, and then returns to the engine cooling channel 122 through the valve ports 1 and 2 of the two-position four-way valve 102 and the engine water pump 121, forming a heating circuit.

[0082] (7) Hybrid / Extended Range Mode 3: like Fig.10 As shown, at this time, the engine is working, and the engine cooling circuit also participates in the work, the valve port 1 and the valve port 2 of the first coolant three-way proportional valve 109 are connected, the valve port 1 and the valve port 3 of the first coolant three-way proportional valve 109 are connected, the valve port 1 and the valve port 2 of the second coolant three-way proportional valve 120 are connected, the valve port 1 and the valve port 3 of the two-position four-way valve 102 are connected, the valve port 1 and the valve port 6 of the seven-way valve 101 are connected, the valve port 3 and the valve port 4 of the seven-way valve 101 are connected, the valve port 2 and the valve port 5 of the seven-way valve 101 are connected, and the stop valve 125 is closed.

[0083] For the refrigerant circuit, the high-temperature and high-pressure refrigerant at the outlet of the compressor 110 is converted into a high-pressure and low-temperature two-phase refrigerant after heat exchange in the water-cooled condenser 111, and the drying tank 115 stores the excess liquid refrigerant. The refrigerant passes through the first coaxial tube 113 to increase the degree of supercooling, and is throttled by the first electronic expansion valve 116 to become a low-pressure and low-temperature two-phase refrigerant, which exchanges heat with the passenger compartment air in the evaporator 112 to reduce the temperature of the passenger compartment. The other refrigerant passes through the second electronic expansion valve 117 to become a low-pressure and low-temperature two-phase refrigerant, and exchanges heat with the coolant of the battery circuit in the chiller to reduce the battery temperature. The refrigerant in the evaporator 112 passes through the second coaxial tube 114 to increase the degree of supercooling, and then merges with the refrigerant at the outlet of the chiller and returns to the compressor 110 to form a refrigerant circuit.

[0084] For the electric drive circuit, the coolant at the valve port 2 of the first coolant three-way proportional valve 109 enters the cooling channel 108 of the electric drive system for heat exchange, then enters the low-temperature radiator 105 and the side low-temperature radiator 106 through the valve port 1 and valve port 6 of the seven-way valve 101 to exchange heat with the air, and then returns to the valve port 1 of the first coolant three-way proportional valve 109 through the motor water pump 107 to form an electric drive circuit. In addition, the coolant at the valve port 3 of the first coolant three-way proportional valve 109 enters the water-cooled condenser 111 for heat exchange, then passes through the valve port 1 and valve port 3 of the two-position four-way valve 102 and the coolant at the valve port 6 of the seven-way valve 101, and then enters the low-temperature radiator 105 and the side low-temperature radiator 106 to exchange heat with the air, and then returns to the valve port 1 of the first coolant three-way proportional valve 109 through the motor water pump 107 to form a water-cooled condenser circulation loop.

[0085] For the battery circuit, the coolant at the outlet of the battery cooling channel 104 enters the chiller through valve ports 3 and 4 of the seven-way valve 101 to exchange heat with the refrigerant circuit, and then returns to the battery water pump 103 through valve ports 5 and 2 of the seven-way valve 101 to form a battery circuit.

[0086] For the engine cooling circuit, the coolant at the outlet of the engine cooling channel 122 exchanges heat with the air through the high-temperature radiator 124, and then circulates through the thermostat 123 and the engine water pump 121 to return to the engine cooling channel 122, forming an engine cooling circuit.

[0087] This mode can also achieve single passenger compartment cooling, single battery active cooling, single electric drive cooling, single engine cooling and different combinations of the above.

[0088] The present application also provides a vehicle, comprising: an engine, a motor, a battery, and a vehicle thermal management system of any of the above.

[0089] A vehicle provided by the present application includes an engine cooling circuit, a low-temperature circuit, a refrigerant circuit, a heating circuit, a seven-way valve 101 and a two-position four-way valve 102; wherein the engine cooling circuit is used to dissipate heat from the engine, the low-temperature circuit is used to manage the temperature of the battery and the electric drive system, the refrigerant circuit is used to provide heat or absorb heat using a refrigerant, and the heating circuit is used to provide heat to the passenger compartment. The seven-way valve 101 and the two-position four-way valve 102 are connected to the engine cooling circuit, the heating circuit, the low-temperature circuit and the refrigerant circuit, and different valve ports of the seven-way valve 101 and the two-position four-way valve 102 are switched to connect the engine cooling circuit, the heating circuit, the low-temperature circuit and Part or all of the refrigerant circuit; that is, by setting a single seven-way valve 101 and a two-position four-way valve 102 to connect the engine cooling circuit, heating circuit, low-temperature circuit and refrigerant circuit, switching the different valve ports of the seven-way valve 101 and the two-position four-way valve 102 according to the heat dissipation or heating requirements of various components and spaces of the vehicle, thereby realizing partial or full connection of the engine cooling circuit, heating circuit, low-temperature circuit and refrigerant circuit, and then realizing multiple thermal management modes, efficiently utilizing the energy of the entire vehicle while meeting the thermal management requirements of various components of the vehicle, and reducing the number of valve bodies, thereby reducing the space requirement and complexity of the entire thermal management system.

[0090] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0091] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagram. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, referring to "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to", and can be used interchangeably with them.

[0092] It should also be noted that in the apparatus, device and method of the present application, each component or each step can be decomposed and / or recombined. Such decomposition and / or recombination should be regarded as equivalent solutions of the present application.

[0093] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0094] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. A vehicle thermal management system, characterized in that: include: An engine cooling circuit, wherein the engine cooling circuit is used to dissipate heat from the engine; A low temperature circuit for managing the temperature of the battery and the electric drive system; A refrigerant circuit, wherein the refrigerant circuit is used to provide heat or absorb heat using a refrigerant; A heating circuit, the heating circuit is used to provide heat to the passenger compartment, wherein the heating circuit comprises a two-position four-way valve, the two-position four-way valve connects the heating circuit, the low-temperature circuit and the engine cooling circuit; Seven-way valve; wherein the seven-way valve connects the heating circuit, the low-temperature circuit and the refrigerant circuit, and different valve ports of the seven-way valve are switched to connect part or all of the heating circuit, the low-temperature circuit and the refrigerant circuit.

2. The vehicle thermal management system according to claim 1, characterized in that: The low-temperature circuit includes a battery circuit, and the battery circuit includes a connected battery water pump and a battery cooling channel; wherein the inlet of the battery water pump is connected to the valve port 2 of the seven-way valve, and the outlet of the battery cooling channel is connected to the valve port 3 of the seven-way valve.

3. The vehicle thermal management system according to claim 1, characterized in that: The low-temperature circuit includes an electric drive circuit, which includes a low-temperature radiator, a side low-temperature radiator, a motor water pump and an electric drive system cooling channel that are connected in sequence; wherein the low-temperature radiator and the side low-temperature radiator are arranged in parallel, the outlet of the electric drive system cooling channel is connected to the valve port 1 of the seven-way valve, the inlet of the low-temperature radiator and the side low-temperature radiator is connected to the valve port 6 of the seven-way valve and the valve port 3 of the two-position four-way valve, and the inlet of the motor water pump is connected to the valve port 7 of the seven-way valve.

4. The vehicle thermal management system according to claim 3, characterized in that: The electric drive circuit also includes a first coolant three-way proportional valve, which connects the heating circuit, the motor water pump and the electric drive system cooling channel.

5. The vehicle thermal management system according to claim 1, characterized in that: The refrigerant circuit includes a compressor, a water-cooled condenser, a chiller and an evaporator connected in sequence, wherein the evaporator and the chiller are arranged in parallel, and the inlet and outlet of the liquid flow channel of the chiller are respectively connected to the valve port 4 and the valve port 5 of the seven-way valve.

6. The vehicle thermal management system according to claim 5, characterized in that: The refrigerant circuit also includes a first coaxial tube and a second coaxial tube; wherein the first coaxial tube is arranged between the inlet of the evaporator and the outlet of the water-cooled condenser, and the second coaxial tube is arranged between the outlet of the evaporator and the inlet of the compressor.

7. The vehicle thermal management system according to claim 5, characterized in that: The heating circuit includes a connected warm air water pump, a PTC and a water heating core; wherein the inlet of the warm air water pump is connected to the valve port 4 of the two-position four-way valve, the outlet of the water heating core is connected to the water-cooled condenser, and the end of the water-cooled condenser away from the water heating core is connected to the valve port 1 of the two-position four-way valve.

8. The vehicle thermal management system according to claim 7, characterized in that: The heating circuit also includes a second coolant three-way proportional valve, which connects the water-cooled condenser, the water heating core and the low-temperature circuit.

9. The vehicle thermal management system according to claim 1, characterized in that: The engine cooling circuit includes an engine water pump, an engine cooling channel, a thermostat and a high-temperature radiator connected in sequence; wherein the outlet of the engine cooling channel is connected to the heating circuit, and the inlet of the engine water pump is connected to the valve port 2 of the two-position four-way valve.

10. A vehicle, characterized in that: include: An engine, a motor, a battery, and a vehicle thermal management system as claimed in any one of claims 1 to 9.

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