Thermal management system for new energy vehicle

Abstract

The heat management system for the new energy vehicle comprises a refrigerant loop used for refrigerant circulation and an anti-freezing liquid loop used for anti-freezing liquid circulation, the refrigerant loop comprises a battery cooler, and the anti-freezing liquid loop comprises a warm core water loop, a battery water loop and an electric drive water loop. And the battery water loop, the electric drive water loop and the battery cooler are communicated through a six-way water valve. Thus, the electric drive water loop and the battery cooler are communicated through the six-way water valve, the thermal management requirements of the electric drive area, the battery area and the passenger compartment area of the whole vehicle can be met, and various requirements of the vehicle and people under different environment temperatures and scenes can be met; and complicated valves and eight-way or more valves do not need to be adopted, so that the cost is lower, the control is simple, and the system test cost and the whole vehicle calibration cost can be effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicles, and in particular to a thermal management system for new energy vehicles. Background Art

[0002] For pure electric, extended-range or PHEV (plug-in hybrid electric vehicle) models, energy consumption is an important performance requirement of the whole vehicle, especially in winter. The conventional solution uses a PTC (positive temperature coefficient) water heater as a heat source to provide it to the passenger compartment and battery. However, at this time, the COP (energy efficiency ratio = heat gained / electricity paid) is less than 1, which has a greater impact on the vehicle's range. In some scenarios, compared with the range at normal temperature, the range of models using PTC water heaters in winter can be reduced by 50% or more.

[0003] In order to solve the above problems, the heat pump solution is currently the most widely used, using a low-temperature heating method, and has been widely used in different models. Compared with the COP of PTC, the heat pump solution can reach a level of 1.5 or even higher at extremely low temperatures, which can increase the vehicle's cruising range by about 10%.

[0004] However, conventional heat pump solutions rely on complex refrigerant circuit valves to switch the refrigerant circuit; or use complex antifreeze side water valve solutions, through complex multi-way water valves (8 or more), to achieve heat transfer in the antifreeze circuit. However, the complex refrigerant circuit valves and eight-way or more water valves in the above two solutions are expensive and complex to control, and require a lot of system tests or real vehicle tests for calibration. Summary of the invention

[0005] In order to solve the technical problems existing in the background technology, the present invention proposes a thermal management system for new energy vehicles.

[0006] A thermal management system for new energy vehicles proposed in the present invention includes a refrigerant circuit for refrigerant circulation and an antifreeze circuit for antifreeze circulation, the refrigerant circuit includes a battery cooler 112, the antifreeze circuit includes a warm core water circuit, a battery water circuit and an electric drive water circuit, and the battery water circuit, the electric drive water circuit and the battery cooler 112 are connected through a six-way water valve 304.

[0007] Preferably, the pipeline of the refrigerant circuit is connected in sequence with an electric compressor 101, a compressor exhaust temperature and pressure sensor 102, a water-cooled condenser 103, an electromagnetic on-off valve I104, an electromagnetic on-off valve II105, an air-cooled condenser 106, a refrigerant one-way valve 107, a liquid storage drying tank 108, an evaporator electronic expansion valve 109, an evaporator 110, a battery cooler electronic expansion valve 111, the battery cooler 112 and a compressor suction temperature and pressure sensor 113 to form two channels, one of which is a channel formed when the electromagnetic on-off valve I104 is opened and the electromagnetic on-off valve II105 is closed; the other channel is a channel formed when the electromagnetic on-off valve I104 is closed and the electromagnetic on-off valve II105 is opened.

[0008] Preferably, the pipeline of the warm core water circuit is connected in sequence with a warm core circuit water pump 201, a water heater 202, a warm core water inlet temperature sensor 203, a warm air core 204, a warm core three-way water valve 205, and a warm core one-way water valve 206. During operation, the antifreeze is pressurized by the warm core circuit water pump 201, first enters the water-cooled condenser 103 to be heated, then enters the water heater 202 to be heated for the second time, then flows through the warm core water inlet temperature sensor 203, releases heat in the warm air core 204, then enters the warm core three-way water valve 205, and then returns to the warm core circuit water pump 201.

[0009] Preferably, a battery circuit water pump 301, a battery water inlet temperature sensor 302, a battery pack 303, and a six-way water valve 304 are sequentially connected to the pipeline of the battery water circuit. The six-way water valve includes ports I, II, III, IV, V, and VI. Port I is used to connect to the inlet of an electric drive water pump, port II is used to connect to the battery outlet, port III is connected to the inlet of a battery water pump, port IV is used to connect to the outlet of a battery cooler, port V is used to connect to the inlet of a battery cooler, and port VI is used to connect to the outlet of an electric drive.

[0010] Preferably, the pipeline of the electric drive water circuit is connected in sequence with an electric drive circuit water pump 401, an electric drive inlet water temperature sensor 402, an electric drive cold plate 403, a radiator 404, an electric drive self-circulating three-way water valve 405, and an electric drive outlet water temperature sensor 406; during operation, the antifreeze is pressurized by the electric drive circuit water pump 401, flows through the electric drive inlet water temperature sensor 402, then passes through the electric drive cold plate 403, and then enters the radiator 404 for heat dissipation. The cooled antifreeze passes through the electric drive self-circulating three-way water valve 405, flows through the electric drive outlet water temperature sensor 406, then enters from the VI port of the six-way water valve 304, and then flows out from the I port and returns to the electric drive circuit water pump 401.

[0011] Preferably, a heat dissipation fan for dissipating heat from the air-cooled condenser 106 and the radiator 404 is also included.

[0012] Preferably, it also includes an air conditioning box blower installed in the passenger compartment. When the air conditioning box blower is turned on, the air flows through the evaporator 110 and is cooled.

[0013] In summary, the present invention has the following beneficial effects: this solution adopts the connection between the electric drive water circuit and the battery cooler through a six-way water valve, which can realize the thermal management requirements of the three areas of the vehicle electric drive + battery + passenger compartment, and can realize the various needs of vehicles and personnel under different ambient temperatures and scenarios; and there is no need to use complex valves and eight-way or more valves, the cost is lower, the control is simple, and the cost of system testing and vehicle calibration can be effectively reduced.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of a thermal management system for a new energy vehicle according to an embodiment of the present invention;

[0016] Figure 2 A schematic diagram of a working mode 1 of a six-way water valve according to an embodiment of the present invention;

[0017] Figure 3 This is a schematic diagram of the second working mode of the six-way water valve according to an embodiment of the present invention;

[0018] Figure 4 Schematic diagram of the working mode 3 of the six-way water valve according to the embodiment of the present invention;

[0019] Figure 5 This is a schematic diagram of working mode 1 of a thermal management system for a new energy vehicle according to an embodiment of the present invention;

[0020] Figure 6 This is a schematic diagram of working mode 2 of a thermal management system for a new energy vehicle according to an embodiment of the present invention;

[0021] Figure 7 Schematic diagram of working mode 3 of the thermal management system for new energy vehicles according to an embodiment of the present invention

[0022] Figure 8 Schematic diagram of working mode 4 of the thermal management system for new energy vehicles according to an embodiment of the present invention

[0023] Fig. 9 Schematic diagram of working mode 5 of the thermal management system for new energy vehicles according to an embodiment of the present invention

[0024] Fig.10 Schematic diagram of working mode 6 of the thermal management system for new energy vehicles according to an embodiment of the present invention

[0025] Fig.11Schematic diagram of working mode 7 of the thermal management system for new energy vehicles according to an embodiment of the present invention

[0026] Fig.12 Schematic diagram of working mode 8 of the thermal management system for new energy vehicles according to an embodiment of the present invention

[0027] Fig.13 Schematic diagram of working mode 9 of the thermal management system for new energy vehicles according to an embodiment of the present invention

[0028] Fig.14 The schematic diagram of the working mode 10 of the thermal management system for new energy vehicles according to the embodiment of the present invention is

[0029] Fig.15 The schematic diagram of the working mode 11 of the thermal management system for new energy vehicles according to the embodiment of the present invention is

[0030] Fig.16 It is a principle diagram of the working mode 12 of the thermal management system for new energy vehicles according to an embodiment of the present invention;

[0031] Fig.17 Schematic diagram of working mode 13 of the thermal management system for new energy vehicles according to an embodiment of the present invention

[0032] Fig.18 Schematic diagram of the working mode 14 of the thermal management system for new energy vehicles according to an embodiment of the present invention

[0033] Fig.19 Schematic diagram of working mode 15 of the thermal management system for new energy vehicles according to an embodiment of the present invention

[0034] Fig. 20 It is a schematic diagram of the working mode 16 of the thermal management system for new energy vehicles according to an embodiment of the present invention.

[0035] In the figure:

[0036] 101-electric compressor, 102-compressor exhaust temperature and pressure sensor, 103-water-cooled condenser, 104-electromagnetic on-off valve I, 105-electromagnetic on-off valve II, 106-air-cooled condenser, 107-refrigerant one-way valve, 108-liquid storage drying tank, 109-evaporator electronic expansion valve, 110-evaporator, 111-battery cooler electronic expansion valve, 112-battery cooler, 113-compressor suction temperature and pressure sensor;

[0037] 201-heating core circuit water pump, 202-water heater, 203-heating core water inlet temperature sensor, 204-heating core, 205-heating core three-way water valve, 206-heating core one-way water valve;

[0038] 301-battery circuit water pump, 302-battery water inlet temperature sensor, 303-battery pack, 304-six-way water valve;

[0039] 401-electric drive circuit water pump, 402-electric drive inlet water temperature sensor, 403-electric drive cold plate, 404-radiator, 405-electric drive self-circulating three-way water valve, 406-electric drive outlet water temperature sensor;

[0040] 501-Cooling fan;

[0041] 601-Air conditioning box blower. DETAILED DESCRIPTION

[0042] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar symbols throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0043] like Figure 1 As shown, the present embodiment proposes a thermal management system for a new energy vehicle, including a refrigerant circuit for circulating a refrigerant and an antifreeze circuit for circulating an antifreeze, the refrigerant circuit includes a battery cooler 112, the antifreeze circuit includes a warm core water circuit, a battery water circuit and an electric drive water circuit, and the battery water circuit, the electric drive water circuit and the battery cooler 112 are connected via a six-way water valve 304.

[0044] In this way, the electric drive water circuit and the battery cooler are connected through a six-way water valve, which can meet the thermal management needs of the three areas of the vehicle's electric drive + battery + passenger compartment, and can meet the various needs of vehicles and personnel in different ambient temperatures and scenarios; and there is no need to use complex valves and eight-way or more valves, which is lower in cost and simpler to control, and can effectively reduce the cost of system testing and vehicle calibration.

[0045] Furthermore, the pipeline of the refrigerant circuit is connected in sequence with an electric compressor 101, a compressor exhaust temperature and pressure sensor 102, a water-cooled condenser 103, an electromagnetic on-off valve I 104, an electromagnetic on-off valve II 105, an air-cooled condenser 106, a refrigerant one-way valve 107, a liquid storage drying tank 108, an evaporator electronic expansion valve 109, an evaporator 110, a battery cooler electronic expansion valve 111, a battery cooler 112 and a compressor suction temperature and pressure sensor 113 to form two channels, one of which is a channel formed when the electromagnetic on-off valve I 104 is opened and the electromagnetic on-off valve II 105 is closed; and the other channel is a channel formed when the electromagnetic on-off valve I 104 is closed and the electromagnetic on-off valve II 105 is opened.

[0046] Furthermore, the pipeline of the warm core water circuit is connected in sequence with a warm core circuit water pump 201, a water heater 202, a warm core water inlet temperature sensor 203, a warm air core 204, a warm core three-way water valve 205, and a warm core one-way water valve 206. During operation, the antifreeze is pressurized by the warm core circuit water pump 201, first enters the water-cooled condenser 103 to be heated, then enters the water heater 202 to be heated for the second time, then flows through the warm core water inlet temperature sensor 203, releases heat in the warm air core 204, then enters the warm core three-way water valve 205, and then returns to the warm core circuit water pump 201.

[0047] The battery water circuit pipeline is connected in sequence with a battery circuit water pump 301, a battery water inlet temperature sensor 302, a battery pack 303, and a six-way water valve 304. The six-way water valve includes ports Ⅰ, Ⅱ, Ⅲ, Ⅳ, Ⅴ, and Ⅵ. Port Ⅰ is used to connect to the electric drive water pump inlet, port Ⅱ is used to connect to the battery outlet, port Ⅲ is connected to the battery water pump inlet, port Ⅳ is used to connect to the battery cooler outlet, port Ⅴ is used to connect to the battery cooler inlet, and port Ⅵ is used to connect to the electric drive outlet. Specifically, refer to the attached Figure 2-4 As shown, there are three working modes of the six-way water valve.

[0048] The pipeline of the electric drive water circuit is connected in sequence with an electric drive circuit water pump 401, an electric drive inlet water temperature sensor 402, an electric drive cold plate 403, a radiator 404, an electric drive self-circulating three-way water valve 405, and an electric drive outlet water temperature sensor 406. During operation, the antifreeze is pressurized by the electric drive circuit water pump 401, flows through the electric drive inlet water temperature sensor 402, then passes through the electric drive cold plate 403, and then enters the radiator 404 for heat dissipation. The cooled antifreeze passes through the electric drive self-circulating three-way water valve 405, flows through the electric drive outlet water temperature sensor 406, then enters from the VI port of the six-way water valve 304, and then flows out from the I port and returns to the electric drive circuit water pump 401.

[0049] In this embodiment, a heat dissipation fan is also included for dissipating heat from the air-cooled condenser 106 and the radiator 404. An air conditioning box blower installed in the passenger compartment is also included. When the air conditioning box blower is turned on, the air flows through the evaporator 110 to cool down.

[0050] The specific working modes of the thermal management system of the new energy vehicle in this embodiment are as follows, see Table 1:

[0051]

[0052]

[0053] Table 1

[0054] like Figure 5 As shown, working mode 1: passenger compartment cooling, battery cooling, electric drive cooling

[0055] Refrigerant circuit: After being compressed by the electric compressor 101, the refrigerant flows through the compressor exhaust temperature and pressure sensor 102, and then enters the water-cooled condenser 103 for condensation. At this time, the electromagnetic on-off valve I 104 is opened, and the electromagnetic on-off valve II 105 is closed. The refrigerant continues to enter the air-cooled condenser 106 for condensation, and after flowing through the refrigerant one-way valve 107, it enters the liquid storage drying tank 108, and then is divided into two paths. One path passes through the evaporator electronic expansion valve throttling 109 and enters the evaporator 110; the other path passes through the battery cooler electronic expansion valve throttling 111 and enters the battery cooler 112. Finally, the two refrigerant paths are combined to flow through the compressor suction temperature and pressure sensor 113, and then return to the entrance of the electric compressor 101;

[0056] Heating core water circuit: various components in the circuit do not work;

[0057] Battery water circuit: After the antifreeze is pressurized by the battery circuit water pump 301, it flows through the battery water inlet temperature sensor 302, enters the battery pack 303, and then enters from the port II of the six-way water valve 304, and then flows out from the port V, enters the battery cooler 112 for cooling, and then the antifreeze enters from the port IV of the six-way water valve 304, and then flows out from the port III, and then returns to the inlet of the battery circuit water pump 301;

[0058] Electric drive water circuit: After the antifreeze is pressurized by the electric drive circuit water pump 401, it flows through the electric drive inlet water temperature sensor 402, then passes through the electric drive cold plate 403, and then enters the radiator 404 for heat dissipation. The cooled antifreeze passes through the electric drive self-circulating three-way water valve 405, flows through the electric drive outlet water temperature sensor 406, and then enters from the VI port of the six-way water valve 304, and then flows out from the I port and returns to the electric drive circuit water pump 401;

[0059] Front-end heat dissipation: The heat dissipation fan 501 is turned on to dissipate heat from the air-cooled condenser 106 and the radiator 404;

[0060] Air supply in the passenger compartment: the air conditioning box blower 601 is turned on, and the air flows through the evaporator 110 to be cooled.

[0061] like Figure 6 As shown, working mode 2: passenger compartment heating and dehumidification, battery cooling, electric drive heat dissipation

[0062] Refrigerant circuit: After being compressed by the electric compressor 101, the refrigerant flows through the compressor exhaust temperature and pressure sensor 102, and then enters the water-cooled condenser 103 for condensation. At this time, the electromagnetic on-off valve I 104 is closed, and the electromagnetic on-off valve II 105 is opened. The refrigerant enters the liquid storage drying tank 108, and then is divided into two paths. One path passes through the evaporator electronic expansion valve throttling 109 and enters the evaporator 110; the other path passes through the battery cooler electronic expansion valve throttling 111 and enters the battery cooler 112. Finally, the two refrigerant paths are combined and flow through the compressor suction temperature and pressure sensor 113, and then return to the entrance of the electric compressor 101;

[0063] Warm core water circuit: After the antifreeze is pressurized by the warm core circuit water pump 201, it first enters the water-cooled condenser 103 to be heated, then enters the water heater 202 to be heated again, then flows through the warm core water inlet temperature sensor 203, releases heat in the warm air core 204, then enters the warm core three-way water valve 205, and then returns to the warm core circuit water pump 201;

[0064] Battery water circuit: After the antifreeze is pressurized by the battery circuit water pump 301, it flows through the battery water inlet temperature sensor 302, enters the battery pack 303, and then enters from the port II of the six-way water valve 304, and then flows out from the port V, enters the battery cooler 112 for cooling, and then the antifreeze enters from the port IV of the six-way water valve 304, and then flows out from the port III, and then returns to the inlet of the battery circuit water pump 301;

[0065] Electric drive water circuit: After the antifreeze is pressurized by the electric drive circuit water pump 401, it flows through the electric drive inlet water temperature sensor 402, then passes through the electric drive cold plate 403, and then enters the radiator 404 for heat dissipation. The cooled antifreeze passes through the electric drive self-circulating three-way water valve 405, flows through the electric drive outlet water temperature sensor 406, and then enters from the VI port of the six-way water valve 304, and then flows out from the I port and returns to the electric drive circuit water pump 401;

[0066] Front-end heat dissipation: The heat dissipation fan 501 is turned on to dissipate heat from the radiator 404;

[0067] Air supply in the passenger compartment: the air conditioner blower 601 is turned on, and the air flows through the evaporator 110 and the heater core 204 for dehumidification and heating.

[0068] like Figure 7 As shown, working mode 3: passenger compartment heating, battery cooling, electric drive cooling

[0069] Refrigerant circuit: After being compressed by the electric compressor 101, the refrigerant flows through the compressor exhaust temperature and pressure sensor 102, and then enters the water-cooled condenser 103 for condensation. At this time, the electromagnetic on-off valve I 104 is closed, and the electromagnetic on-off valve II 105 is opened. The refrigerant enters the liquid storage drying tank 108, and then passes through the battery cooler electronic expansion valve throttling 111, enters the battery cooler 112, flows through the compressor suction temperature and pressure sensor 113, and then returns to the entrance of the electric compressor 101;

[0070] Warm core water circuit: After the antifreeze is pressurized by the warm core circuit water pump 201, it first enters the water-cooled condenser 103 to be heated, then enters the water heater 202 to be heated again, then flows through the warm core water inlet temperature sensor 203, releases heat in the warm air core 204, then enters the warm core three-way water valve 205, and then returns to the warm core circuit water pump 201;

[0071] Battery water circuit: After the antifreeze is pressurized by the battery circuit water pump 301, it flows through the battery water inlet temperature sensor 302, enters the battery pack 303, and then enters from the port II of the six-way water valve 304, and then flows out from the port V, enters the battery cooler 112 for cooling, and then the antifreeze enters from the port IV of the six-way water valve 304, and then flows out from the port III, and then returns to the inlet of the battery circuit water pump 301;

[0072] Electric drive water circuit: After the antifreeze is pressurized by the electric drive circuit water pump 401, it flows through the electric drive inlet water temperature sensor 402, then passes through the electric drive cold plate 403, and then enters the radiator 404 for heat dissipation. The cooled antifreeze passes through the electric drive self-circulating three-way water valve 405, flows through the electric drive outlet water temperature sensor 406, and then enters from the VI port of the six-way water valve 304, and then flows out from the I port and returns to the electric drive circuit water pump 401;

[0073] Front-end heat dissipation: The heat dissipation fan 501 is turned on to dissipate heat from the radiator 404;

[0074] Air supply in the passenger compartment: the air conditioning box blower 601 is turned on, and the air flows through the heater core 204 and is heated.

[0075] like Figure 8 As shown, working mode 4: passenger compartment ventilation, battery cooling, electric drive cooling

[0076] Refrigerant circuit: Circuit components are not working;

[0077] Heating core water circuit: circuit components are not working;

[0078] Battery water circuit and electric drive water circuit: After the antifreeze is pressurized by the battery circuit water pump 301, it flows through the battery water inlet temperature sensor 302, enters the battery pack 303, and then enters from the port II of the six-way water valve 304, and then flows out from the port I. After entering the electric drive circuit water pump 401 for pressurization, it flows through the electric drive inlet water temperature sensor 402, and then passes through the electric drive cold plate 403, and then enters the radiator 404 for heat dissipation. The cooled antifreeze passes through the electric drive self-circulating three-way water valve 405, flows through the electric drive outlet water temperature sensor 406, and then enters from the port VI of the six-way water valve 304, and then flows out from the port III and returns to the battery circuit water pump 301;

[0079] Front-end heat dissipation: The heat dissipation fan 501 is turned on to dissipate heat from the radiator 404;

[0080] Air supply in the passenger compartment: the air conditioning box blower 601 is turned on.

[0081] like Fig. 9 As shown, working mode 5: passenger compartment cooling, battery heating, electric drive cooling

[0082] Refrigerant circuit: After being compressed by the electric compressor 101, the refrigerant flows through the compressor exhaust temperature and pressure sensor 102, and then enters the water-cooled condenser 103 for condensation. At this time, the electromagnetic on-off valve I 104 is closed, and the electromagnetic on-off valve II 105 is opened. The refrigerant enters the liquid storage dry tank 108, and then passes through the battery cooler electronic expansion valve throttling 111, enters the evaporator 110, flows through the compressor suction temperature and pressure sensor 113, and then returns to the entrance of the electric compressor 101;

[0083] Warm core water circuit & battery water circuit: After the antifreeze is pressurized by the warm core circuit water pump 201, it first enters the water-cooled condenser 103 to be heated, then enters the water heater 202 to be heated again, then flows through the warm core water inlet temperature sensor 203, releases heat in the warm air core 204, then enters the warm core three-way water valve 205, enters the battery circuit water pump 301 to be pressurized, flows through the battery water inlet temperature sensor 302, enters the battery pack 303, then enters from the II port of the six-way water valve 304, then flows out from the V port, enters the battery cooler 112 for cooling, then the antifreeze enters from the IV port of the six-way water valve 304, then flows out from the III port, flows through the warm core one-way water valve 206, and then returns to the inlet of the warm core circuit water pump 201;

[0084] Electric drive water circuit: After the antifreeze is pressurized by the electric drive circuit water pump 401, it flows through the electric drive inlet water temperature sensor 402, then passes through the electric drive cold plate 403, and then enters the radiator 404 for heat dissipation. The cooled antifreeze passes through the electric drive self-circulating three-way water valve 405, flows through the electric drive outlet water temperature sensor 406, and then enters from the VI port of the six-way water valve 304, and then flows out from the I port and returns to the electric drive circuit water pump 401;

[0085] Front-end heat dissipation: The heat dissipation fan 501 is turned on to dissipate heat from the radiator 404;

[0086] Air supply in the passenger compartment: the air conditioning box blower 601 is turned on, and the air flows through the evaporator 110 to be cooled.

[0087] like Fig.10 As shown, working mode 6: passenger compartment heating and dehumidification, battery heating, electric drive cooling

[0088] Refrigerant circuit: After being compressed by the electric compressor 101, the refrigerant flows through the compressor exhaust temperature and pressure sensor 102, and then enters the water-cooled condenser 103 for condensation. At this time, the electromagnetic on-off valve I 104 is closed, and the electromagnetic on-off valve II 105 is opened. The refrigerant enters the liquid storage dry tank 108, and then passes through the battery cooler electronic expansion valve throttling 111, enters the evaporator 110, flows through the compressor suction temperature and pressure sensor 113, and then returns to the entrance of the electric compressor 101;

[0089] Warm core water circuit: After the antifreeze is pressurized by the warm core circuit water pump 201, it first enters the water-cooled condenser 103 to be heated, then enters the water heater 202 to be heated again, then flows through the warm core water inlet temperature sensor 203, releases heat in the warm air core 204, and then enters the warm core three-way water valve 205, and then is divided into two paths, one directly returns to the inlet of the warm core circuit water pump 201, and the other enters the inlet of the battery circuit water pump 301;

[0090] Battery water circuit: After the antifreeze is pressurized by the battery circuit water pump 301, it flows through the battery water inlet temperature sensor 302, enters the battery pack 303, and then enters from the port II of the six-way water valve 304, and then flows out from the port III. After that, it is divided into two paths. One path flows through the heating core one-way water valve 206 and returns to the inlet of the heating core circuit water pump 201, and the other path directly returns to the inlet of the battery circuit water pump 301;

[0091] Electric drive water circuit: After the antifreeze is pressurized by the electric drive circuit water pump 401, it flows through the electric drive inlet water temperature sensor 402, then passes through the electric drive cold plate 403, and then enters the radiator 404 for heat dissipation. The cooled antifreeze passes through the electric drive self-circulating three-way water valve 405, flows through the electric drive outlet water temperature sensor 406, and then enters from the VI port of the six-way water valve 304, and then flows out from the V port. After entering the battery cooler 112, it enters from the IV port of the six-way water valve 304, flows out from the I port, and returns to the electric drive circuit water pump 401;

[0092] Front-end heat dissipation: The heat dissipation fan 501 is turned on to dissipate heat from the radiator 404;

[0093] Air supply in the passenger compartment: the air conditioner blower 601 is turned on, and the air flows through the evaporator 110 and the heater core 204 to be dehumidified and heated.

[0094] like Fig.11 As shown, working mode 7: passenger compartment heating, battery heating, electric drive cooling

[0095] Refrigerant circuit: After being compressed by the electric compressor 101, the refrigerant flows through the compressor exhaust temperature and pressure sensor 102, and then enters the water-cooled condenser 103 for condensation. At this time, the electromagnetic on-off valve I 104 is closed, and the electromagnetic on-off valve II 105 is opened. The refrigerant enters the liquid storage drying tank 108, and then passes through the battery cooler electronic expansion valve throttling 111, enters the battery cooler 112, flows through the compressor suction temperature and pressure sensor 113, and then returns to the entrance of the electric compressor 101;

[0096] Warm core water circuit: After the antifreeze is pressurized by the warm core circuit water pump 201, it first enters the water-cooled condenser 103 to be heated, then enters the water heater 202 to be heated, then flows through the warm core water inlet temperature sensor 203, releases heat in the warm air core 204, and then enters the warm core three-way water valve 205, and then is divided into two paths, one directly returns to the inlet of the warm core circuit water pump 201, and the other enters the inlet of the battery circuit water pump 301;

[0097] Battery water circuit: After the antifreeze is pressurized by the battery circuit water pump 301, it flows through the battery water inlet temperature sensor 302, enters the battery pack 303, and then enters from the port II of the six-way water valve 304, and then flows out from the port III. After that, it is divided into two paths. One path flows through the heating core one-way water valve 206 and returns to the inlet of the heating core circuit water pump 201, and the other path directly returns to the inlet of the battery circuit water pump 301;

[0098] Electric drive water circuit: After the antifreeze is pressurized by the electric drive circuit water pump 401, it flows through the electric drive inlet water temperature sensor 402, then passes through the electric drive cold plate 403, and then enters the radiator 404 for heat dissipation. The cooled antifreeze passes through the electric drive self-circulating three-way water valve 405, flows through the electric drive outlet water temperature sensor 406, and then enters from the VI port of the six-way water valve 304, and then flows out from the V port. After entering the battery cooler 112, it enters from the IV port of the six-way water valve 304, flows out from the I port, and returns to the electric drive circuit water pump 401;

[0099] Front-end heat dissipation: The heat dissipation fan 501 is turned on to dissipate heat from the radiator 404;

[0100] Air supply in the passenger compartment: the air conditioning box blower 601 is turned on, and the air flows through the heater core 204 to be heated.

[0101] like Fig.12 As shown, working mode 8: passenger compartment ventilation, battery heating, electric drive cooling

[0102] Refrigerant circuit: After being compressed by the electric compressor 101, the refrigerant flows through the compressor exhaust temperature and pressure sensor 102, and then enters the water-cooled condenser 103 for condensation. At this time, the electromagnetic on-off valve I 104 is closed, and the electromagnetic on-off valve II 105 is opened. The refrigerant enters the liquid storage drying tank 108, and then passes through the battery cooler electronic expansion valve throttling 111, enters the battery cooler 112, flows through the compressor suction temperature and pressure sensor 113, and then returns to the entrance of the electric compressor 101;

[0103] Warm core water circuit & battery water circuit: After the antifreeze is pressurized by the warm core circuit water pump 201, it first enters the water-cooled condenser 103, then enters the water heater 202 to be heated, then flows through the warm core water inlet temperature sensor 203, releases heat in the warm air core 204, then enters the warm core three-way water valve 205, enters the battery circuit water pump 301 for pressurization, flows through the battery water inlet temperature sensor 302, enters the battery pack 303, then enters from the port II of the six-way water valve 304, and then flows out from the port III and returns to the warm core circuit water pump 201;

[0104] Electric drive water circuit: After the antifreeze is pressurized by the electric drive circuit water pump 401, it flows through the electric drive inlet water temperature sensor 402, then passes through the electric drive cold plate 403, and then enters the radiator 404 for heat dissipation. The cooled antifreeze passes through the electric drive self-circulating three-way water valve 405, flows through the electric drive outlet water temperature sensor 406, and then enters from the VI port of the six-way water valve 304, and then flows out from the V port. After entering the battery cooler 112, it enters from the IV port of the six-way water valve 304, flows out from the I port, and returns to the electric drive circuit water pump 401;

[0105] Front-end heat dissipation: The heat dissipation fan 501 is turned on to dissipate heat from the radiator 404;

[0106] Air supply in the passenger compartment: the air conditioning box blower 601 is turned on.

[0107] like Fig.13 As shown, working mode 9: passenger compartment cooling, battery temperature equalization, electric drive heat dissipation

[0108] Refrigerant circuit: After being compressed by the electric compressor 101, the refrigerant flows through the compressor exhaust temperature and pressure sensor 102, and then enters the water-cooled condenser 103 for condensation. At this time, the electromagnetic on-off valve I 104 is opened, and the electromagnetic on-off valve II 105 is closed. The refrigerant continues to enter the air-cooled condenser 106 for condensation, flows through the refrigerant check valve 107, enters the liquid storage drying tank 108, and then passes through the evaporator electronic expansion valve throttling 109 and enters the evaporator 110; flows through the compressor suction temperature and pressure sensor 113, and then returns to the entrance of the electric compressor 101;

[0109] Heating core water circuit: circuit components are not working;

[0110] Battery water circuit: After being pressurized by the battery circuit water pump 301, the antifreeze flows through the battery water inlet temperature sensor 302, enters the battery pack 303, and then enters from the port II of the six-way water valve 304, and then flows out from the port III and returns to the inlet of the battery circuit water pump 301;

[0111] Electric drive water circuit: After the antifreeze is pressurized by the electric drive circuit water pump 401, it flows through the electric drive inlet water temperature sensor 402, then passes through the electric drive cold plate 403, and then enters the radiator 404 for heat dissipation. The cooled antifreeze passes through the electric drive self-circulating three-way water valve 405, flows through the electric drive outlet water temperature sensor 406, and then enters from the VI port of the six-way water valve 304, and then flows out from the V port. After entering the battery cooler 112, it enters from the IV port of the six-way water valve 304, and then flows out from the I port and returns to the electric drive circuit water pump 401;

[0112] Front-end heat dissipation: The heat dissipation fan 501 is turned on to dissipate heat from the radiator 404;

[0113] Air supply in the passenger compartment: the air conditioner blower 601 is turned on, and the air flows through the evaporator 110 for cooling.

[0114] like Fig.14 As shown, working mode 10: passenger compartment heating and dehumidification, battery temperature equalization, electric drive heat dissipation

[0115] Refrigerant circuit: After being compressed by the electric compressor 101, the refrigerant flows through the compressor exhaust temperature and pressure sensor 102, and then enters the water-cooled condenser 103 for condensation. At this time, the electromagnetic on-off valve I 104 is closed, and the electromagnetic on-off valve II 105 is opened. The refrigerant enters the liquid storage dryer 108, and then passes through the evaporator electronic expansion valve throttling 109, enters the evaporator 110, flows through the compressor suction temperature and pressure sensor 113, and then returns to the entrance of the electric compressor 101;

[0116] Warm core water circuit: After the antifreeze is pressurized by the warm core circuit water pump 201, it first enters the water-cooled condenser 103 to be heated, then enters the water heater 202 to be heated, then flows through the warm core water inlet temperature sensor 203, releases heat in the warm air core 204, then enters the warm core three-way water valve 205, and returns to the inlet of the warm core circuit water pump 201;

[0117] Battery water circuit: After being pressurized by the battery circuit water pump 301, the antifreeze flows through the battery water inlet temperature sensor 302, enters the battery pack 303, and then enters from the port II of the six-way water valve 304, and then flows out from the port III and returns to the inlet of the battery circuit water pump 301;

[0118] Electric drive water circuit: After the antifreeze is pressurized by the electric drive circuit water pump 401, it flows through the electric drive inlet water temperature sensor 402, then passes through the electric drive cold plate 403, and then enters the radiator 404 for heat dissipation. The cooled antifreeze passes through the electric drive self-circulating three-way water valve 405, flows through the electric drive outlet water temperature sensor 406, and then enters from the VI port of the six-way water valve 304, and then flows out from the V port. After entering the battery cooler 112, it enters from the IV port of the six-way water valve 304, flows out from the I port, and returns to the electric drive circuit water pump 401;

[0119] Front-end heat dissipation: The heat dissipation fan 501 is turned on to dissipate heat from the radiator 404;

[0120] Air supply in the passenger compartment: the air conditioner blower 601 is turned on, and the air flows through the evaporator 110 and the heater core 204 for heating and dehumidification.

[0121] like Fig.15 As shown, working mode 11: passenger compartment heating, battery temperature equalization, electric drive cooling

[0122] Refrigerant circuit: After being compressed by the electric compressor 101, the refrigerant flows through the compressor exhaust temperature and pressure sensor 102, and then enters the water-cooled condenser 103 for condensation. At this time, the electromagnetic on-off valve I 104 is closed, and the electromagnetic on-off valve II 105 is opened. The refrigerant enters the liquid storage drying tank 108, and then passes through the battery cooler electronic expansion valve throttling 111, enters the battery cooler 112, flows through the compressor suction temperature and pressure sensor 113, and then returns to the entrance of the electric compressor 101;

[0123] Warm core water circuit: After the antifreeze is pressurized by the warm core circuit water pump 201, it first enters the water-cooled condenser 103 to be heated, then enters the water heater 202 to be heated, then flows through the warm core water inlet temperature sensor 203, releases heat in the warm air core 204, then enters the warm core three-way water valve 205, and returns to the warm core circuit water pump 201;

[0124] Battery water circuit: After being pressurized by the battery circuit water pump 301, the antifreeze flows through the battery water inlet temperature sensor 302, enters the battery pack 303, and then enters from the port II of the six-way water valve 304, and then flows out from the port III and returns to the inlet of the battery circuit water pump 301;

[0125] Electric drive water circuit: After the antifreeze is pressurized by the electric drive circuit water pump 401, it flows through the electric drive inlet water temperature sensor 402, then passes through the electric drive cold plate 403, and then enters the radiator 404 for heat dissipation. The cooled antifreeze passes through the electric drive self-circulating three-way water valve 405, flows through the electric drive outlet water temperature sensor 406, and then enters from the VI port of the six-way water valve 304, and then flows out from the V port. After entering the battery cooler 112, it enters from the IV port of the six-way water valve 304, flows out from the I port, and returns to the electric drive circuit water pump 401;

[0126] Front-end heat dissipation: The heat dissipation fan 501 is turned on to dissipate heat from the radiator 404;

[0127] Air supply in the passenger compartment: the air conditioning box blower 601 is turned on, and the air flows through the heater core 204 to be heated.

[0128] like Fig.16 As shown, working mode 12: passenger compartment ventilation, battery temperature equalization, electric drive heat dissipation

[0129] Refrigerant circuit: Circuit components are not working;

[0130] Heating core water circuit: circuit components are not working;

[0131] Electric drive water circuit: After the antifreeze is pressurized by the electric drive circuit water pump 401, it flows through the electric drive inlet water temperature sensor 402, then passes through the electric drive cold plate 403, and then enters the radiator 404 for heat dissipation. The cooled antifreeze passes through the electric drive self-circulating three-way water valve 405, flows through the electric drive outlet water temperature sensor 406, and then enters from the VI port of the six-way water valve 304, and then flows out from the V port. After entering the battery cooler 112, it enters from the IV port of the six-way water valve 304, flows out from the I port, and returns to the electric drive circuit water pump 401;

[0132] Front-end heat dissipation: The heat dissipation fan 501 is turned on to dissipate heat from the radiator 404;

[0133] Air supply in the passenger compartment: the air conditioning box blower 601 is turned on.

[0134] like Fig.17 As shown, working mode 13: passenger compartment cooling, no battery demand, electric drive cooling

[0135] Refrigerant circuit: After being compressed by the electric compressor 101, the refrigerant flows through the compressor exhaust temperature and pressure sensor 102, and then enters the water-cooled condenser 103 for condensation. At this time, the electromagnetic on-off valve I 104 is opened, and the electromagnetic on-off valve II 105 is closed. The refrigerant continues to enter the air-cooled condenser 106 for condensation, flows through the refrigerant check valve 107, enters the liquid storage drying tank 108, and then passes through the evaporator electronic expansion valve throttling 109, enters the evaporator 110, flows through the compressor suction temperature and pressure sensor 113, and then returns to the entrance of the electric compressor 101;

[0136] Heating core water circuit: circuit components are not working;

[0137] Battery water circuit: circuit components are not working;

[0138] Electric drive water circuit: After the antifreeze is pressurized by the electric drive circuit water pump 401, it flows through the electric drive inlet water temperature sensor 402, then passes through the electric drive cold plate 403, and then enters the radiator 404 for heat dissipation. The cooled antifreeze passes through the electric drive self-circulating three-way water valve 405, flows through the electric drive outlet water temperature sensor 406, and then enters from the VI port of the six-way water valve 304, and then flows out from the V port. After entering the battery cooler 112, it enters from the IV port of the six-way water valve 304, flows out from the I port, and returns to the electric drive circuit water pump 401;

[0139] Front-end heat dissipation: The heat dissipation fan 501 is turned on to dissipate heat from the radiator 404;

[0140] Air supply in the passenger compartment: the air conditioner blower 601 is turned on, and the air flows through the evaporator 110 for cooling.

[0141] like Fig.18 As shown, working mode 14: passenger compartment heating and dehumidification, battery cooling, electric drive heat dissipation

[0142] Refrigerant circuit: After being compressed by the electric compressor 101, the refrigerant flows through the compressor exhaust temperature and pressure sensor 102, and then enters the water-cooled condenser 103 for condensation. At this time, the electromagnetic on-off valve I 104 is closed, and the electromagnetic on-off valve II 105 is opened. The refrigerant enters the liquid storage drying tank 108, and then is divided into two paths. One path passes through the evaporator electronic expansion valve throttling 109 and enters the evaporator 110; the other path passes through the battery cooler electronic expansion valve throttling 111 and enters the battery cooler 112. Finally, the two refrigerant paths are combined and flow through the compressor suction temperature and pressure sensor 113, and then return to the entrance of the electric compressor 101;

[0143] Warm core water circuit: After the antifreeze is pressurized by the warm core circuit water pump 201, it first enters the water-cooled condenser 103 to be heated, then enters the water heater 202 to be heated, then flows through the warm core water inlet temperature sensor 203, releases heat in the warm air core 204, then enters the warm core three-way water valve 205, and returns to the warm core circuit water pump 201;

[0144] Battery water circuit: circuit components are not working;

[0145] Electric drive water circuit: After the antifreeze is pressurized by the electric drive circuit water pump 401, it flows through the electric drive inlet water temperature sensor 402, then passes through the electric drive cold plate 403, and then enters the radiator 404 for heat dissipation. The cooled antifreeze passes through the electric drive self-circulating three-way water valve 405, flows through the electric drive outlet water temperature sensor 406, and then enters from the VI port of the six-way water valve 304, and then flows out from the V port. After entering the battery cooler 112, it enters from the IV port of the six-way water valve 304, flows out from the I port, and returns to the electric drive circuit water pump 401;

[0146] Front-end heat dissipation: The heat dissipation fan 501 is turned on to dissipate heat from the radiator 404;

[0147] Air supply in the passenger compartment: the air conditioner blower 601 is turned on, and the air flows through the evaporator 110 and the heater core 204 to be dehumidified and heated.

[0148] like Fig.19 As shown, working mode 15: passenger compartment heating, no battery demand, electric drive cooling

[0149] Refrigerant circuit: After being compressed by the electric compressor 101, the refrigerant flows through the compressor exhaust temperature and pressure sensor 102, and then enters the water-cooled condenser 103 for condensation. At this time, the electromagnetic on-off valve I 104 is closed, and the electromagnetic on-off valve II 105 is opened. The refrigerant enters the liquid storage drying tank 108, and then passes through the battery cooler electronic expansion valve throttling 111, enters the battery cooler 112, flows through the compressor suction temperature and pressure sensor 113, and then returns to the entrance of the electric compressor 101;

[0150] Warm core water circuit: After the antifreeze is pressurized by the warm core circuit water pump 201, it first enters the water-cooled condenser 103 to be heated, then enters the water heater 202 to be heated, then flows through the warm core water inlet temperature sensor 203, releases heat in the warm air core 204, then enters the warm core three-way water valve 205, and returns to the warm core circuit water pump 201;

[0151] Battery water circuit: circuit components are not working;

[0152] Electric drive water circuit: After the antifreeze is pressurized by the electric drive circuit water pump 401, it flows through the electric drive inlet water temperature sensor 402, then passes through the electric drive cold plate 403, and then enters the radiator 404 for heat dissipation. The cooled antifreeze passes through the electric drive self-circulating three-way water valve 405, flows through the electric drive outlet water temperature sensor 406, and then enters from the VI port of the six-way water valve 304, and then flows out from the V port. After entering the battery cooler 112, it enters from the IV port of the six-way water valve 304, flows out from the I port, and returns to the electric drive circuit water pump 401;

[0153] Front-end heat dissipation: The heat dissipation fan 501 is turned on to dissipate heat from the radiator 404;

[0154] Air supply in the passenger compartment: the air conditioning box blower 601 is turned on, and the air flows through the heater core 204 and is heated.

[0155] like Fig. 20 As shown, working mode 16: passenger compartment ventilation, no battery demand, electric drive cooling

[0156] Refrigerant circuit: Circuit components are not working;

[0157] Heating core water circuit: circuit components are not working;

[0158] Battery water circuit: circuit components are not working;

[0159] Electric drive water circuit: After the antifreeze is pressurized by the electric drive circuit water pump 401, it flows through the electric drive inlet water temperature sensor 402, then passes through the electric drive cold plate 403, and then enters the radiator 404 for heat dissipation. The cooled antifreeze passes through the electric drive self-circulating three-way water valve 405, flows through the electric drive outlet water temperature sensor 406, and then enters from the VI port of the six-way water valve 304, flows out from the I port, and returns to the electric drive circuit water pump 401;

[0160] Front-end heat dissipation: The heat dissipation fan 501 is turned on to dissipate heat from the radiator 404;

[0161] Air supply in the passenger compartment: the air conditioning box blower 601 is turned on.

[0162] In summary, the thermal management system for new energy vehicles in this embodiment can realize multiple operating modes, can cope with actual application scenarios more comprehensively, and can perform electric drive waste heat recovery + air source heat pump at the same time. The electric drive waste heat can be recovered losslessly and is not affected by the operating conditions of the whole vehicle; the number of components used is small and the cost is lower, which can effectively reduce the system testing & vehicle calibration costs.

[0163] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0164] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0165] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0166] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0167] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A thermal management system for a new energy vehicle, comprising a refrigerant circuit for circulating a refrigerant and an antifreeze circuit for circulating an antifreeze, characterized in that: The refrigerant circuit comprises a battery cooler (112), the antifreeze liquid circuit comprises a core warming water circuit, a battery water circuit and an electric drive water circuit, and the battery water circuit, the electric drive water circuit and the battery cooler (112) are connected via a six-way water valve (304).

2. The thermal management system for new energy vehicles according to claim 1, characterized in that: The pipeline of the refrigerant circuit is connected in sequence with an electric compressor (101), a compressor exhaust temperature and pressure sensor (102), a water-cooled condenser (103), an electromagnetic on-off valve I (104), an electromagnetic on-off valve II (105), an air-cooled condenser (106), a refrigerant non-return valve (107), a liquid storage drying tank (108), an evaporator electronic expansion valve (109), an evaporator (110), a battery cooler electronic expansion valve (111), the battery cooler (112) and a compressor suction temperature and pressure sensor (113) to form two channels, one of which is a channel formed when the electromagnetic on-off valve I (104) is opened and the electromagnetic on-off valve II (105) is closed; and the other channel is a channel formed when the electromagnetic on-off valve I (104) is closed and the electromagnetic on-off valve II (105) is opened.

3. The thermal management system for new energy vehicles according to claim 2, characterized in that: The pipeline of the heating core water circuit is connected in sequence with a heating core circuit water pump (201), a water heater (202), a heating core water inlet temperature sensor (203), a heating core body (204), a heating core three-way water valve (205), and a heating core one-way water valve (206). When working, the antifreeze is pressurized by the heating core circuit water pump (201), first enters the water-cooled condenser (103) to be heated, then enters the water heater (202) to be heated again, then flows through the heating core water inlet temperature sensor (203), releases heat in the heating core body (204), then enters the heating core three-way water valve (205), and then returns to the heating core circuit water pump (201).

4. The thermal management system for new energy vehicles according to claim 3, characterized in that: A battery circuit water pump (301), a battery water inlet temperature sensor (302), a battery pack (303), and a six-way water valve (304) are sequentially connected to the pipeline of the battery water circuit. The six-way water valve comprises ports I, II, III, IV, V, and VI. Port I is used to connect to the inlet of an electric drive water pump, port II is used to connect to the battery outlet, port III is connected to the inlet of a battery water pump, port IV is used to connect to the outlet of a battery cooler, port V is used to connect to the inlet of a battery cooler, and port VI is used to connect to the outlet of an electric drive.

5. The thermal management system for new energy vehicles according to claim 4, characterized in that: The pipeline of the electric drive water circuit is connected in sequence with an electric drive circuit water pump (401), an electric drive inlet water temperature sensor (402), an electric drive cold plate (403), a radiator (404), an electric drive self-circulating three-way water valve (405), and an electric drive outlet water temperature sensor (406); during operation, the antifreeze is pressurized by the electric drive circuit water pump (401), flows through the electric drive inlet water temperature sensor (402), then passes through the electric drive cold plate (403), and then enters the radiator (404) for heat dissipation; the cooled antifreeze passes through the electric drive self-circulating three-way water valve (405), flows through the electric drive outlet water temperature sensor (406), then enters from the VI port of the six-way water valve (304), and then flows out from the I port to return to the electric drive circuit water pump (401).

6. The thermal management system for new energy vehicles according to claim 5, characterized in that: It also includes a heat dissipation fan for dissipating heat from the air-cooled condenser (106) and the radiator (404).

7. The thermal management system for new energy vehicles according to claim 5, characterized in that: It also includes an air conditioning box blower installed in the passenger compartment. When the air conditioning box blower is turned on, the air flows through the evaporator (110) and is cooled.

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