Thermal management system of vehicle and vehicle

Abstract

The utility model provides a heat management system of a vehicle and the vehicle. A heating module of the heat management system comprises a hot gas bypass heating loop, and in the hot gas bypass heating loop, the second end of a first compressor sequentially communicates with a water cooling condenser, the refrigerant side of a refrigerant heat exchanger, a gas-liquid separator and the first end of the first compressor; the second end of the first compressor further communicates with the first end of the refrigerant side of the refrigerant heat exchanger through a first throttling valve. The refrigeration module comprises a battery heat dissipation loop; and in the battery heat dissipation loop, the second end of the first compressor is sequentially communicated with the water cooling condenser, the outdoor condenser, the direct cooling plate of the battery module, the gas-liquid separator and the first end of the first compressor. According to the thermal management system, PTC is not needed for heating any more, the heating requirement of the passenger compartment can be met by adopting the hot gas bypass heating loop through system architecture optimization, and therefore the cost of the thermal management architecture is reduced.

Description

Technical Field

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

[0002] With the rapid development of PHEV (plug in hybrid electric vehicle) vehicles, users have higher and higher requirements for the pure electric driving range of PHEV models. As an effective means to reduce the low-temperature heating energy consumption of the whole vehicle, the heat pump system has received more and more attention. Because the power sources of PHEVs are diverse and the heat sources are diverse, the cooling pipelines of PHEVs are complex and diverse.

[0003] In the existing vehicle thermal management architecture, PTC (Positive Temperature Coefficient) is usually used for heating. The cost of this device is relatively high. Therefore, there is an urgent need to find an architecture that can replace PTC for heating. Summary of the Utility Model

[0004] The present application provides a thermal management system and a vehicle for a vehicle to solve the problem that the existing air-conditioning thermal management system uses PTC for heating with a relatively high cost.

[0005] In a first aspect, the present application provides a thermal management system for a vehicle, including a heating module and a refrigeration module;

[0006] The heating module includes a hot gas bypass heating circuit;

[0007] The hot gas bypass heating circuit includes a water-cooled condenser, a first compressor, a first throttle valve, a gas-liquid separator, and a refrigerant heat exchanger;

[0008] In the hot gas bypass heating circuit, the second end of the first compressor is sequentially connected to the water-cooled condenser, the refrigerant side of the refrigerant heat exchanger, the gas-liquid separator, and the first end of the first compressor; the second end of the first compressor is also connected to the first end of the refrigerant side of the refrigerant heat exchanger through the first throttle valve;

[0009] The refrigeration module includes a battery heat dissipation circuit;

[0010] The battery heat dissipation circuit includes the first compressor, the water-cooled condenser, an outdoor condenser, a direct cooling plate of a battery module, and the gas-liquid separator;

[0011] In the battery heat dissipation circuit, the second end of the first compressor is sequentially connected to the water-cooled condenser, the outdoor condenser, the direct cooling plate of the battery module, the gas-liquid separator, and the first end of the first compressor.

[0012] In a possible implementation, the heating module further includes a motor waste heat recovery circuit;

[0013] The motor waste heat recovery circuit includes a second water pump, a water-cooled intercooler, and a refrigerant heat exchanger;

[0014] In the motor waste heat recovery circuit, the second end of the second water pump is respectively connected to the first port of the circulating liquid pipeline of the motor drive mechanism and the first water-side port of the water-cooled intercooler. The second port of the circulating liquid pipeline of the motor drive mechanism and the second water-side port of the water-cooled intercooler are both connected to the first end of the water side of the refrigerant heat exchanger, and the second end of the water side of the refrigerant heat exchanger is connected to the first end of the second water pump.

[0015] In a possible implementation, the first throttle valve in the hot gas bypass heating circuit is closed to form a waste heat recovery heating circuit.

[0016] In a possible implementation, the heating module further includes a motor heat storage circuit;

[0017] The motor heat storage circuit includes a second water pump and a water-cooled intercooler;

[0018] In the motor heat storage circuit, the second end of the second water pump is respectively connected to the first port of the circulating liquid pipeline of the motor drive mechanism and the first water-side port of the water-cooled intercooler. After the second port of the circulating liquid pipeline of the motor drive mechanism and the second water-side port of the water-cooled intercooler are connected, they are connected to the first end of the second water pump.

[0019] In a possible implementation, the heating module further includes an outdoor heat exchanger heating circuit;

[0020] The outdoor heat exchanger heating circuit includes an outdoor condenser, the water-cooled condenser, the first compressor, and the gas-liquid separator;

[0021] In the outdoor heat exchanger heating circuit, the second end of the first compressor is sequentially connected to the water-cooled condenser, the outdoor condenser, the gas-liquid separator, and the first end of the first compressor.

[0022] In a possible implementation, the refrigeration module includes an occupant compartment refrigeration circuit;

[0023] The occupant compartment refrigeration circuit includes the first compressor, the water-cooled condenser, the outdoor condenser, the target evaporator, and the gas-liquid separator; the target evaporator includes a front evaporator and / or a rear evaporator;

[0024] In the refrigeration circuit of the passenger compartment, the second end of the first compressor is sequentially connected to the water-cooled condenser, the outdoor condenser, the target evaporator, the gas-liquid separator, and the first end of the first compressor.

[0025] In a possible implementation, the vehicle's thermal management system further includes a dehumidification module; the dehumidification module includes a first dehumidification circuit and a second dehumidification circuit;

[0026] The first dehumidification circuit includes the first compressor, the water-cooled condenser, the target evaporator, and the gas-liquid separator;

[0027] The second dehumidification circuit includes the first compressor, the water-cooled condenser, the outdoor condenser, and the gas-liquid separator;

[0028] In the first dehumidification circuit, the second port of the first compressor is sequentially connected to the water-cooled condenser, the target evaporator, the gas-liquid separator, and the first port of the first compressor;

[0029] In the second dehumidification circuit, the second port of the first compressor is sequentially connected to the water-cooled condenser, the outdoor condenser, the gas-liquid separator, and the first port of the first compressor.

[0030] In a possible implementation, the heating module further includes a high-temperature heating circuit;

[0031] The high-temperature heating circuit includes a first water pump, the water-cooled condenser, a target heater core, a high-temperature radiator, an engine water circuit, a first three-way valve, and a second three-way valve; the target heater core includes a front heater core and / or a rear heater core;

[0032] In the high-temperature heating circuit, the second port of the engine water circuit is respectively connected to the first port of the first three-way valve and the first end of the high-temperature radiator, the second port of the first three-way valve is connected to the first end of the first water pump, the second end of the first water pump is connected to the first end of the water-cooled condenser, the second end of the water-cooled condenser is connected to the first end of the target heater core, the second end of the target heater core is connected to the first port of the second three-way valve, the second port of the second three-way valve and the second end of the high-temperature radiator are both connected to the first port of the engine water circuit; the third port of the second three-way valve is connected to the third port of the first three-way valve.

[0033] In a possible implementation, the vehicle's thermal management system further includes a refrigeration module, and the refrigeration module further includes a motor low-temperature heat dissipation circuit;

[0034] The low-temperature heat dissipation loop of the motor includes a second water pump, a low-temperature radiator, and a water-cooled intercooler;

[0035] In the low-temperature heat dissipation loop of the motor, the second port of the second water pump is respectively communicated with the first port of the circulating liquid pipeline of the motor driving mechanism and the first water side port of the water-cooled intercooler. The second port of the circulating liquid pipeline of the motor driving mechanism and the second water side port of the water-cooled intercooler are both communicated with the first end of the low-temperature radiator, and the second end of the low-temperature radiator is communicated with the first port of the second water pump.

[0036] In a second aspect, an embodiment of the present application provides a vehicle, which includes the thermal management system of the vehicle as described in the first aspect above.

[0037] An embodiment of the present application provides a thermal management system for a vehicle. The heating module of the thermal management system includes a hot gas bypass heating loop. The hot gas bypass heating loop includes a water-cooled condenser, a first compressor, a first throttle valve, a gas-liquid separator, and a refrigerant heat exchanger. In the hot gas bypass heating loop, the second end of the first compressor is sequentially communicated with the water-cooled condenser, the refrigerant side of the refrigerant heat exchanger, the gas-liquid separator, and the first end of the first compressor. The second end of the first compressor is also communicated with the first end of the refrigerant side of the refrigerant heat exchanger through the first throttle valve. The thermal management system provided by the present application no longer requires PTC for heating. Through system architecture optimization, the hot gas bypass heating loop can meet the heating requirements of the passenger compartment, thereby reducing the cost of the thermal management architecture. Description of the Drawings

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0039] Figure 1 It is a schematic structural diagram of the hot gas bypass heating loop provided by an embodiment of the present application;

[0040] Figure 2 It is a schematic structural diagram of the motor waste heat recovery loop provided by an embodiment of the present application;

[0041] Figure 3 It is a schematic structural diagram of the waste heat recovery heating loop provided by an embodiment of the present application;

[0042] Figure 4 It is a schematic structural diagram of the motor heat storage loop provided by an embodiment of the present application;

[0043] Figure 5It is a schematic structural diagram of the heating circuit of the outdoor heat exchanger provided by the embodiment of the present application;

[0044] Figure 6 It is a schematic structural diagram of the dual heating circuit provided by the embodiment of the present application;

[0045] Figure 7 It is a schematic structural diagram of the high-temperature heating circuit provided by the embodiment of the present application;

[0046] Figure 8 It is a schematic structural diagram of the passenger compartment refrigeration circuit provided by the embodiment of the present application;

[0047] Figure 9 It is a schematic structural diagram of the battery heat dissipation circuit provided by the embodiment of the present application;

[0048] Figure 10 It is a schematic structural diagram of the simultaneous startup of the battery heat dissipation circuit and the passenger compartment refrigeration circuit provided by the embodiment of the present application;

[0049] Figure 11 It is a schematic structural diagram of the first dehumidification circuit provided by the embodiment of the present application;

[0050] Figure 12 It is a schematic structural diagram when the first dehumidification circuit and the second dehumidification circuit are started simultaneously provided by the embodiment of the present application;

[0051] Figure 13 It is a schematic structural diagram of the motor low-temperature heat dissipation circuit provided by the embodiment of the present application;

[0052] Figure 14 It is a schematic structural diagram of the vehicle's thermal management system provided by the embodiment of the present application.

[0053] The reference numerals in the above-mentioned drawings are as follows:

[0054] 1. Intercooler; 2. Outdoor condenser; 3. Low-temperature radiator; 4. High-temperature radiator; 5. Temperature sensor; 6. Water-cooled intercooler; 8. Second water pump; 9. Motor drive mechanism; 10. Valve; 11. Three-way valve; 12. Three-way valve; 13. Electronic expansion valve EXV1; 14. Temperature and pressure sensor; 15. Water-cooled condenser; 16. Temperature sensor; 17. First compressor; 18. Temperature and pressure sensor; 19. Gas-liquid separator; 20. First throttle valve EXV4; 21. Solenoid valve EXV10; 22. Electronic expansion valve EXV2; 23. Solenoid valve EXV10; 24. First check valve; 25. Electronic expansion valve EXV3; 26. Solenoid valve SOV; 27. Front evaporator; 28. Front heater core; 29. Rear evaporator; 30. Rear heater core; 31. Valve; 32. Temperature sensor; 33. First water pump; 34. First three-way valve; 35. Second three-way valve; 36. Engine; 37. Exhaust gas recirculation system EGR; 38. Engine water pump; 39. Oil cooler; 40. Flow limiting valve; 41. Battery module; 42. Refrigerant heat exchanger; 44. Electronic expansion valve; 45. Electronic thermostat; 46. Second check valve; 47. Engine water circuit. Detailed implementation manners

[0055] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present application. However, those skilled in the art should clearly understand that the present application can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details from interfering with the description of the present application.

[0056] In the description of the specification and the appended claims of the present application, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0057] The reference to "one embodiment" or "some embodiments" etc. in the description of the present application means that specific features, structures, or characteristics described in combination with the embodiment are included in one or more embodiments of the present application. Thus, the statements "in one embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "comprising", "including", "having" and their variants all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0058] In addition, the "multiple" mentioned in the embodiments of the present application should be construed as two or more than two.

[0059] To make the objectives, technical solutions, and advantages of the present application clearer, the following will be described through specific embodiments in conjunction with the accompanying drawings.

[0060] This embodiment provides a thermal management system for a vehicle, including: a heating module and a refrigeration module;

[0061] The heating module includes a hot gas bypass heating circuit; Figure 1 It is a schematic structural diagram of the hot gas bypass heating circuit provided by the embodiments of the present application. As Figure 1 shown, the hot gas bypass heating circuit includes a water-cooled condenser 15, a first compressor 17, a first throttle valve 20, a gas-liquid separator 19, and a refrigerant heat exchanger 42;

[0062] In the hot gas bypass heating circuit, the second end of the first compressor 17 is sequentially connected to the first end of the water-cooled condenser 15, the refrigerant side 42 of the refrigerant heat exchanger, the gas-liquid separator 19, and the first end of the first compressor 17; the second end of the first compressor 17 is also connected to the first end of the refrigerant side of the refrigerant heat exchanger 42 through the first throttle valve 23.

[0063] In this embodiment, the hot gas bypass heating circuit further includes a temperature and pressure sensor 14, a temperature sensor 16, a temperature and pressure sensor 18, an electronic expansion valve 22, and a solenoid valve SOV(21).

[0064] Specifically, in the hot gas bypass heating circuit, the second end of the first compressor 17 is respectively connected to the first end of the water-cooled condenser 15 and the first end of the first throttle valve 20. The second end of the water-cooled condenser 15 is connected to the first end of the solenoid valve 21. The second end of the solenoid valve 21 is connected to the first end of the electronic expansion valve 22. The second end of the electronic expansion valve 22 is connected to the first end of the refrigerant side of the refrigerant heat exchanger 42. The second end of the refrigerant side of the refrigerant heat exchanger 42 is connected to the first end of the gas-liquid separator 19. The second end of the gas-liquid separator 19 is connected to the first end of the first compressor 17. The second end of the first throttle valve 20 is connected to the first end of the refrigerant side of the refrigerant heat exchanger 42. Among them, the temperature sensor 16 is used to detect the liquid temperature of the pipeline between the compressor and the water-cooled condenser 15. The temperature and pressure sensor 14 is used to detect the liquid temperature and pressure of the pipeline between the water-cooled condenser 15 and the solenoid valve 21. The temperature and pressure sensor 18 is used to detect the liquid temperature and pressure of the pipeline between the gas-liquid separator 19 and the compressor.

[0065] As can be seen from the above embodiments, a refrigerant circulates in the hot gas bypass heating circuit. The compressor in the hot gas bypass heating circuit provided by the present application is controlled according to the inlet liquid temperature. Figure 1All valves in the system are opened, and the electronic expansion valves EXV2 and EXV4 throttle, so that the entire loop does not absorb heat from the environment and does not require PTC for heating, achieving system architecture optimization. Using a hot gas bypass heating circuit can meet the heating requirements of the occupant compartment in a lower temperature environment, thereby reducing the cost of the thermal management architecture. Among them, the lower temperature environment can be an environment of -15°C.

[0066] In a possible implementation, Figure 9 The structural schematic diagram of the battery cooling circuit provided in this embodiment is shown, as Figure 9 shown, the thermal management system further includes a refrigeration module, and the refrigeration module further includes a battery cooling circuit;

[0067] The battery cooling circuit includes the first compressor 17, the water-cooled condenser 15, the outdoor condenser 2, the direct cooling plate of the battery module 41, and the gas-liquid separator 19;

[0068] In the battery cooling circuit, the second end of the first compressor 17 is sequentially connected to the first end of the water-cooled condenser 15, the outdoor condenser 2, the direct cooling plate of the battery module 41, the gas-liquid separator 19, and the first end of the first compressor 17.

[0069] In this embodiment, the battery cooling circuit further includes an electronic expansion valve 13, a first check valve 24, a temperature sensor 16, a temperature and pressure sensor 14, an electronic expansion valve 23, a temperature and pressure sensor 18, and a temperature sensor 5.

[0070] In the battery cooling circuit, the second end of the first compressor 17 is connected to the first end of the water-cooled condenser 15, the second end of the water-cooled condenser 15 is connected to the first end of the electronic expansion valve 13, the second end of the electronic expansion valve 13 is connected to one end of the outdoor condenser 2, the other end of the outdoor condenser 2 is connected to the first end of the first check valve 24, the second end of the first check valve 24 is connected to one end of the electronic expansion valve 23, the second end of the electronic expansion valve 23 is connected to the first end of the direct cooling plate of the battery module 41, the other end of the direct cooling plate of the battery module 41 is connected to one end of the gas-liquid separator 19, and the other end of the gas-liquid separator 19 is connected to the first end of the compressor. Among them, the temperature sensor 16 is used to detect the liquid temperature of the pipeline between the compressor and the water-cooled condenser 15, the temperature and pressure sensor 14 is used to detect the liquid temperature and pressure of the pipeline between the water-cooled condenser 15 and the solenoid valve 21, the temperature and pressure sensor 18 is used to detect the liquid temperature and pressure of the pipeline between the gas-liquid separator 19 and the compressor, and the temperature sensor 5 is used to detect the liquid temperature between the outdoor condenser 2 and the first check valve 24.

[0071] Specifically, the battery module includes a direct cooling plate, and the battery module is directly cooled by the refrigerant circuit of the outdoor condenser.

[0072] As can be seen from the above embodiments, the operation of the compressor is controlled based on the target temperature of the battery inlet liquid, the opening degree of the electronic expansion valve EXV2 is controlled based on the degree of subcooling, and EXV1 is controlled to be fully open to meet the heat dissipation and defrosting requirements of the battery.

[0073] In a possible implementation, as Figure 2 shown, the heating module further includes a motor waste heat recovery circuit;

[0074] The motor waste heat recovery circuit includes a second water pump 8, a water-cooled intercooler 6, and a refrigerant heat exchanger 42;

[0075] In the motor waste heat recovery circuit, the second end of the second water pump 8 is respectively connected to the first port of the circulating liquid pipeline of the motor drive mechanism 9 and the first water side port of the water-cooled intercooler 6. The second port of the circulating liquid pipeline of the motor drive mechanism 9 and the second water side port of the water-cooled intercooler 6 are both connected to the first water side end of the refrigerant heat exchanger 42. The second water side end of the refrigerant heat exchanger 42 is connected to the first end of the second water pump 8.

[0076] In this embodiment, the motor waste heat recovery circuit further includes a three-way valve 11, a three-way valve 12, and a flow limiting valve 10. Specifically, the port b of the three-way valve 11 is connected to the second end of the refrigerant heat exchanger 42, the port a of the three-way valve 11 is connected to the first end of the low-temperature radiator 3, the port c of the three-way valve 11 is connected to the port a of the three-way valve 12, the port c of the three-way valve 12 is respectively connected to the second port of the circulating liquid pipeline of the motor drive mechanism 9 and the second water side port of the water-cooled intercooler 6, and the port b of the three-way valve 12 is connected to the first port of the second water pump 8. In the motor waste heat recovery circuit, the port b and the port of the three-way valve 11 are conducted, the port a is not conducted, the port a and the port c of the three-way valve 12 are conducted, and the port b is not conducted.

[0077] Specifically, the gas side port of the water-cooled intercooler 6 is connected to the exhaust port of the engine to dissipate heat for the engine.

[0078] In a possible implementation, Figure 3 shows a schematic structural diagram of the waste heat recovery heating circuit provided in this embodiment. As Figure 3 shown, the first throttle valve 20 in the hot gas bypass heating circuit is closed to form a waste heat recovery heating circuit.

[0079] As can be seen from the above embodiments, the waste heat recovery heating circuit absorbs waste heat from the motor drive mechanism 9 of the vehicle through the refrigerant heat exchanger 42, and controls the operation of the compressor according to the target temperature of the heating inlet liquid to achieve the function of waste heat recovery.

[0080] In a possible implementation, as Figure 4As shown, the heating module further includes a motor heat storage loop;

[0081] The motor heat storage loop includes a second water pump 8 and a water-cooled intercooler 6;

[0082] In the motor heat storage loop, the second end of the second water pump 8 is respectively connected to the first port of the circulating liquid pipeline of the motor drive mechanism 9 and the first water side port of the water-cooled intercooler 6, and the second port of the circulating liquid pipeline of the motor drive mechanism 9 and the second water side port of the water-cooled intercooler 6 are connected and then connected to the first end of the second water pump 8.

[0083] In this embodiment, the motor heat storage loop further includes a three-way valve 12 and a flow limiting valve 10; in the motor heat storage loop, all ports of the three-way valve 11 are blocked, the port b and the port c of the three-way valve 12 are connected, and the port a is blocked.

[0084] As can be seen from the above embodiments, the heat of the motor drive mechanism 9 realizes the rise of the water temperature through the internal circulation of the motor heat storage loop.

[0085] In a possible implementation manner, the heating module further includes an outdoor heat exchanger heating loop; as Figure 5 shown, Figure 5 The outdoor heat exchanger heating loop provided in this embodiment is shown. Specifically, the outdoor heat exchanger heating loop includes an outdoor condenser 2, the water-cooled condenser 15, the first compressor 17, and the gas-liquid separator 19;

[0086] In the outdoor heat exchanger heating loop, the second end of the first compressor 17 is sequentially connected to the water-cooled condenser 15, the outdoor condenser 2, the gas-liquid separator 19, and the first end of the first compressor 17.

[0087] As Figure 5 shown, the outdoor heat exchanger heating loop further includes a temperature and pressure sensor 14, an electronic expansion valve 13, a temperature sensor 5, a solenoid valve 26, a second check valve 46, a temperature and pressure sensor 18, and a temperature sensor 16.

[0088] In the heating circuit of the outdoor heat exchanger, the second end of the first compressor 17 is connected to the first end of the water-cooled condenser 15, the second end of the water-cooled condenser 15 is connected to the first end of the electronic expansion valve 13, the second end of the electronic expansion valve 13 is connected to one end of the outdoor condenser 2, the other end of the outdoor condenser 2 is connected to one end of the solenoid valve 26, the other end of the solenoid valve 26 is connected to one end of the second check valve 46, the other end of the second check valve 46 is connected to one end of the gas-liquid separator 19, and the other end of the gas-liquid separator 19 is connected to the first end of the compressor. Among them, the temperature sensor 16 is used to detect the liquid temperature of the pipeline between the compressor and the water-cooled condenser 15, the temperature and pressure sensor 14 is used to detect the liquid temperature and pressure of the pipeline between the water-cooled condenser 15 and the solenoid valve 21, and the temperature and pressure sensor 18 is used to detect the liquid temperature and pressure of the pipeline between the gas-liquid separator 19 and the compressor.

[0089] As can be seen from the above embodiments, in the heating circuit of the outdoor heat exchanger, the operation of the compressor is controlled according to the heating inlet liquid temperature, and Figure 5 all the valves in it are opened, and the EXV1 is controlled to throttle to absorb heat from the environment to supply heating for the occupant compartment.

[0090] In a possible implementation manner, the heating circuit of the outdoor heat exchanger and the waste heat recovery heating circuit are controlled to operate simultaneously to obtain a dual heating circuit as Figure 6 shown.

[0091] In a possible implementation manner, in the thermal management system of the vehicle, the battery module can be heated by a heating film.

[0092] In a possible implementation manner, as Figure 7 shown, the heating module further includes a high-temperature heating circuit;

[0093] The high-temperature heating circuit includes a first water pump 33, the water-cooled condenser 15, a target heater core, a high-temperature radiator 4, an engine water circuit 47, a first three-way valve 34 and a second three-way valve 35; the target heater core includes a front heater core 28 and / or a rear heater core 30;

[0094] In the high-temperature heating circuit, the second port of the engine water circuit 47 is respectively communicated with the first port of the first three-way valve 34 and the first end of the high-temperature radiator 4. The second port of the first three-way valve 34 is communicated with the first end of the first water pump 33. The second end of the first water pump 33 is communicated with the first end of the water-cooled condenser 15. The second end of the water-cooled condenser 15 is communicated with the first end of the target heater core. The second end of the target heater core is communicated with the first port of the second three-way valve 35. The second port of the second three-way valve 35 and the second end of the high-temperature radiator 4 are both communicated with the first port of the engine water circuit 47. The third port of the second three-way valve 35 is communicated with the third port of the first three-way valve 34.

[0095] In this embodiment, the target heater core may include the front heater core 28, or may include the front heater core 28 and the rear heater core 30. When rear air-conditioning heating is required, the valve 31 is opened.

[0096] In this embodiment, the engine water circuit includes an engine 36, an exhaust gas recirculation system EGR 37, an engine water pump 38, an oil cooler 39, a flow-limiting valve 40, and an electronic thermostat 45. When in the engine large circulation mode, the electronic thermostat 45 is opened. When in the engine small circulation mode, the electronic thermostat 45 is closed.

[0097] In this embodiment, control the first port of the first three-way valve 34 to be closed, and the second and third ports to be opened. Control the second port of the second three-way valve 35 to be closed, and the first and third ports to be opened. At this time, the air conditioner can heat itself or heat the battery. In addition, at this time, the high-temperature heating circuit can operate in the engine large circulation mode.

[0098] In this embodiment, control the third port of the first three-way valve 34 to be closed, and the first and second ports to be opened. Control the third port of the second three-way valve 35 to be closed, and the first and second ports to be opened. The large and small circulations of the engine can be realized, and at this time, the air conditioner uses the waste heat of the engine for heating or heats the battery.

[0099] In a possible implementation manner, the thermal management system further includes a refrigeration module. The refrigeration module includes a passenger compartment refrigeration circuit. Figure 8 The structural schematic diagram of the passenger compartment refrigeration circuit provided in this embodiment is shown, as Figure 8 shown, the passenger compartment refrigeration circuit includes the first compressor 17, the water-cooled condenser 15, the outdoor condenser 2, the target evaporator, and the gas-liquid separator 19. The target evaporator includes the front evaporator 27 and / or the rear evaporator 29.

[0100] In the refrigeration circuit of the passenger compartment, the second end of the first compressor 17 is sequentially connected to the first end of the water-cooled condenser 15, the outdoor condenser 2, the target evaporator, the gas-liquid separator 19, and the first end of the first compressor 17.

[0101] In this embodiment, the refrigeration circuit of the passenger compartment further includes an electronic expansion valve 13, a second check valve 46, a first check valve 24, a temperature sensor 16, a temperature and pressure sensor 14, a temperature and pressure sensor 18, and a temperature sensor 5.

[0102] Specifically, in the refrigeration circuit of the passenger compartment, the second end of the first compressor 17 is connected to the first end of the water-cooled condenser 15, the second end of the water-cooled condenser 15 is connected to the first end of the electronic expansion valve 13, the second end of the electronic expansion valve 13 is connected to one end of the outdoor condenser 2, the other end of the outdoor condenser 2 is connected to the first end of the first check valve 24, the second end of the first check valve 24 is respectively connected to one ends of an electronic expansion valve 25 and an electronic expansion valve 44, the other end of the electronic expansion valve 25 is connected to one end of the front evaporator 27, the other end of the electronic expansion valve 44 is connected to one end of the rear evaporator 29, the other ends of the front evaporator 27 and the rear evaporator 29 are both connected to one end of the second check valve 46, the other end of the second check valve 46 is connected to one end of the gas-liquid separator 19, and the other end of the gas-liquid separator 19 is connected to the first end of the compressor 17. Among them, the temperature sensor 16 is used to detect the liquid temperature of the pipeline between the compressor and the water-cooled condenser 15, the temperature and pressure sensor 14 is used to detect the liquid temperature and pressure of the pipeline between the water-cooled condenser 15 and the solenoid valve 21, the temperature and pressure sensor 18 is used to detect the liquid temperature and pressure of the pipeline between the gas-liquid separator 19 and the compressor, and the temperature sensor 5 is used to detect the liquid temperature between the outdoor condenser 2 and the first check valve 24.

[0103] As can be seen from the above embodiments, when there is a refrigeration demand in the passenger compartment, the compressor is controlled according to the evaporator temperature, the EXV1 is fully opened, and the EXV3 is throttled according to the degree of subcooling. When there is a dual-control demand, the compressor is controlled based on a fixed speed, the EXV1 is controlled according to the inlet liquid temperature of the heater core (28 and / or 30), and the EXV3 is controlled according to the evaporator temperature.

[0104] In one embodiment, as Figure 10 shown, when the battery heat dissipation circuit and the refrigeration circuit of the passenger compartment of the refrigeration module are started and operated simultaneously, the thermal management system can achieve a dual-refrigeration function. At this time, the EXV1 is fully opened, the EXV2 and EXV3 are throttled according to the degree of subcooling, and the compressor is controlled according to the battery or evaporator temperature target.

[0105] In a possible implementation manner, as Figure 11 and 12As shown, the thermal management system further includes a dehumidification module; the dehumidification module includes a first dehumidification circuit and a second dehumidification circuit;

[0106] The first dehumidification circuit includes the first compressor 17, the water-cooled condenser 15, the target evaporator, and the gas-liquid separator 19;

[0107] The second dehumidification circuit includes the first compressor 17, the water-cooled condenser 15, the outdoor condenser 2, and the gas-liquid separator 19;

[0108] In the first dehumidification circuit, the second port of the first compressor 17 is sequentially connected to the water-cooled condenser 15, the target evaporator, the gas-liquid separator 19, and the first port of the first compressor 17;

[0109] In the second dehumidification circuit, the second port of the first compressor 17 is sequentially connected to the water-cooled condenser 15, the outdoor condenser 2, the gas-liquid separator 19, and the first port of the first compressor 17.

[0110] In this embodiment, as Figure 11 shown, the first dehumidification circuit further includes a second check valve 46, a solenoid valve 21, an electronic expansion valve 25, a temperature sensor 16, a temperature and pressure sensor 14, a temperature and pressure sensor 18, and a temperature sensor 5. In the first dehumidification circuit, the second port of the first compressor 17 is connected to the first end of the water-cooled condenser 15, the second end of the water-cooled condenser 15 is connected to one end of the solenoid valve 21, the other end of the solenoid valve 21 is connected to one end of the electronic expansion valve 25, the other end of the electronic expansion valve 25 is connected to one end of the target evaporator, the other end of the target evaporator is connected to one end of the second check valve 46, the other end of the second check valve 46 is connected to one end of the gas-liquid separator 19, and the other end of the gas-liquid separator 19 is connected to the first end of the first compressor 17.

[0111] As Figure 12 shown, the second dehumidification circuit further includes an electronic expansion valve 13, a solenoid valve 21, a temperature sensor 5, a solenoid valve 26, an electronic expansion valve 25, a second check valve 46, a temperature and pressure sensor 18, a temperature sensor 16, and a temperature and pressure sensor 14. In the second dehumidification circuit, the second port of the first compressor 17 is connected to the first end of the water-cooled condenser 15, the second end of the water-cooled condenser 15 is connected to one end of the electronic expansion valve 13, the other end of the electronic expansion valve 13 is connected to one end of the outdoor condenser 2, the other end of the outdoor condenser 2 is connected to one end of the solenoid valve 26, the other end of the solenoid valve 26 is connected to one end of the second check valve 46, the other end of the second check valve 46 is connected to one end of the gas-liquid separator 19, and the other end of the gas-liquid separator 19 is connected to the first end of the first compressor 17.

[0112] Among them, the target evaporator can be the front evaporator 27 or the rear evaporator 29. When the first dehumidification circuit works alone, the self-circulation dehumidification function can be realized, such as Figure 12 shown. When the first dehumidification circuit and the second dehumidification circuit work together, the parallel dehumidification function can be realized to improve the dehumidification efficiency.

[0113] In a possible implementation manner, the thermal management system further includes a refrigeration module, and the refrigeration module further includes a motor low-temperature heat dissipation circuit; as Figure 13 shown, the motor low-temperature heat dissipation circuit includes a second water pump 8, a low-temperature radiator 3, and a water-cooled intercooler 6;

[0114] In the motor low-temperature heat dissipation circuit, the second port of the second water pump 8 is respectively communicated with the first port of the circulating liquid pipeline of the motor driving mechanism 9 and the first water-side port of the water-cooled intercooler 6. The second port of the circulating liquid pipeline of the motor driving mechanism 9 and the second water-side port of the water-cooled intercooler 6 are both communicated with the first end of the low-temperature radiator 3, and the second end of the low-temperature radiator 3 is communicated with the first port of the second water pump 8.

[0115] In this embodiment, the motor low-temperature heat dissipation circuit further includes a flow-limiting valve 10, a three-way valve 11, and a three-way valve 12. The flow-limiting valve 10 is arranged between the water-cooled intercooler 6 and the second water pump 8. Port c of the three-way valve 12 is respectively connected to the second port of the circulating liquid pipeline of the motor driving mechanism 9 and the second water-side end of the water-cooled intercooler 6. Port a of the three-way valve 12 is communicated with port c of the three-way valve 11, port b of the three-way valve 12 is communicated with the first port of the second water pump 8, port b of the three-way valve 11 is communicated with the second end of the refrigerant heat exchanger 42, and port a of the three-way valve 11 is communicated with the first end of the low-temperature radiator 3. In the motor low-temperature heat dissipation circuit, port a and port c of the three-way valve 11 are communicated, port b is not communicated, port a and port c of the three-way valve 12 are communicated, and port b is not communicated.

[0116] The above-mentioned motor low-temperature heat dissipation circuit uses the low-temperature radiator 3 to meet the heat dissipation requirements of the motor driving mechanism 9.

[0117] In a possible implementation manner, Figure 14 shows the schematic diagram of the architecture of the entire thermal management system. By adjusting the opening and closing of different valves and the opening and closing of different devices, the above-mentioned Figures 1 to 14Any of the refrigeration or heating circuits mentioned above aims to replace the PTC through the optimized design of the thermal management system. According to different heating requirements, the air conditioner can switch between different heating modes. When the ambient temperature is very low, generally below -15°C, the air conditioner uses the hot gas bypass heating circuit to meet the heating requirements of the passenger compartment. Within the ambient temperature range of 5 - 15°C, according to the magnitude of the heating requirements, combined with the ambient temperature and the motor water temperature, the air conditioner determines to adopt different heating modes, including the outdoor heat exchanger heating circuit, the waste heat recovery heating circuit, the hot gas bypass heating circuit, etc. By replacing the PTC with the above heating technology, the purpose of cost reduction is achieved.

[0118] In a second aspect, the present application provides a vehicle, which includes the thermal management system of the vehicle as described above.

[0119] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included within the protection scope of the present application.

Claims

1. A thermal management system for a vehicle, characterized in that: Including heating module and cooling module; The heating module includes a hot gas bypass heating circuit; The hot gas bypass heating circuit includes a water-cooled condenser, a first compressor, a first throttle valve, a gas-liquid separator and a refrigerant heat exchanger; In the hot gas bypass heating circuit, the second end of the first compressor is connected to the water-cooled condenser, the refrigerant side of the refrigerant heat exchanger, the gas-liquid separator and the first end of the first compressor in sequence; the second end of the first compressor is also connected to the first end of the refrigerant side of the refrigerant heat exchanger through the first throttle valve; The refrigeration module includes a battery heat dissipation circuit; The battery heat dissipation circuit includes the first compressor, the water-cooled condenser, the outdoor condenser, the direct cooling plate of the battery module and the gas-liquid separator; In the battery heat dissipation circuit, the second end of the first compressor is sequentially connected to the water-cooled condenser, the outdoor condenser, the direct cooling plate of the battery module, the gas-liquid separator and the first end of the first compressor.

2. The thermal management system of a vehicle according to claim 1, characterized in that: The heating module also includes a motor waste heat recovery circuit; The motor waste heat recovery circuit includes a second water pump, a water-cooled intercooler and a refrigerant heat exchanger; In the motor waste heat recovery circuit, the second end of the second water pump is respectively connected to the first port of the circulating liquid pipeline of the motor drive mechanism and the first port on the water side of the water-cooled intercooler, the second port of the circulating liquid pipeline of the motor drive mechanism and the second port on the water side of the water-cooled intercooler are both connected to the first end of the water side of the refrigerant heat exchanger, and the second end of the water side of the refrigerant heat exchanger is connected to the first end of the second water pump.

3. The thermal management system for a vehicle according to claim 2, characterized in that: The first throttle valve in the hot gas bypass heating circuit is closed to form a waste heat recovery heating circuit.

4. The thermal management system for a vehicle according to claim 1, characterized in that: The heating module also includes a motor heat storage circuit; The motor heat storage circuit includes a second water pump and a water-cooled intercooler; In the motor heat storage circuit, the second end of the second water pump is respectively connected to the first port of the circulating liquid pipeline of the motor drive mechanism and the first port on the water side of the water-cooled intercooler. The second port of the circulating liquid pipeline of the motor drive mechanism and the second port on the water side of the water-cooled intercooler are connected and then connected to the first end of the second water pump.

5. The thermal management system for a vehicle according to claim 1 or 3, characterized in that: The heating module also includes an outdoor heat exchanger heating circuit; The outdoor heat exchanger heating circuit includes an outdoor condenser, the water-cooled condenser, the first compressor and the gas-liquid separator; In the outdoor heat exchanger heating circuit, the second end of the first compressor is sequentially connected to the water-cooled condenser, the outdoor condenser, the gas-liquid separator and the first end of the first compressor.

6. The thermal management system for a vehicle according to claim 1, characterized in that: The refrigeration module includes a passenger compartment refrigeration circuit; The passenger compartment refrigeration circuit includes the first compressor, the water-cooled condenser, the outdoor condenser, the target evaporator and a gas-liquid separator; the target evaporator includes a front evaporator and / or a rear evaporator; In the passenger compartment refrigeration circuit, the second end of the first compressor is sequentially connected to the water-cooled condenser, the outdoor condenser, the target evaporator, the gas-liquid separator, and the first end of the first compressor.

7. The thermal management system for a vehicle according to claim 1, characterized in that: The thermal management system further comprises a dehumidification module; the dehumidification module comprises a first dehumidification circuit and a second dehumidification circuit; The first dehumidification circuit includes the first compressor, the water-cooled condenser, the target evaporator and the gas-liquid separator; The second dehumidification circuit includes the first compressor, the water-cooled condenser, the outdoor condenser and the gas-liquid separator; In the first dehumidification circuit, the second port of the first compressor is sequentially connected to the water-cooled condenser, the target evaporator, the gas-liquid separator and the first port of the first compressor; In the second dehumidification circuit, the second port of the first compressor is sequentially connected to the water-cooled condenser, the outdoor condenser, the gas-liquid separator and the first port of the first compressor.

8. The thermal management system for a vehicle according to claim 1, characterized in that: The heating module also includes a high-temperature heating circuit; The high-temperature heating circuit includes a first water pump, the water-cooled condenser, a target heater core, a high-temperature radiator, an engine water circuit, a first three-way valve and a second three-way valve; the target heater core includes a front heater core and / or a rear heater core; In the high-temperature heating circuit, the second port of the engine water circuit is respectively connected to the first port of the first three-way valve and the first end of the high-temperature radiator, the second port of the first three-way valve is connected to the first end of the first water pump, the second end of the first water pump is connected to the first end of the water-cooled condenser, the second end of the water-cooled condenser is connected to the first end of the target warm air core, the second end of the target warm air core is connected to the first port of the second three-way valve, the second port of the second three-way valve and the second end of the high-temperature radiator are both connected to the first port of the engine water circuit; the third port of the second three-way valve is connected to the third port of the first three-way valve.

9. The thermal management system for a vehicle according to claim 1, characterized in that: The thermal management system further includes a refrigeration module, and the refrigeration module further includes a motor low-temperature heat dissipation circuit; The motor low-temperature heat dissipation circuit includes a second water pump, a low-temperature radiator and a water-cooled intercooler; In the motor low-temperature heat dissipation circuit, the second port of the second water pump is respectively connected to the first port of the circulating liquid pipeline of the motor drive mechanism and the first port on the water side of the water-cooled intercooler, the second port of the circulating liquid pipeline of the motor drive mechanism and the second port on the water side of the water-cooled intercooler are both connected to the first end of the low-temperature radiator, and the second end of the low-temperature radiator is connected to the first port of the second water pump.

10. A vehicle, characterized in that: A thermal management system for a vehicle comprising the method according to any one of claims 1 to 9.

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