Thermal management system and vehicle

Abstract

The utility model discloses a thermal management system and a vehicle. The thermal management system comprises an air-conditioning system and a thermal management system, the control valve is communicated with a high-pressure heat exchange loop, a battery heat exchange loop, a radiator loop, a heat exchanger loop and a heating loop, and the control valve is selectively communicated with one or more of the high-pressure heat exchange loop, the battery heat exchange loop, the radiator loop, the heat exchanger loop and the heating loop; wherein the air conditioning system exchanges heat with the heat exchanger loop and the heating loop. The refrigerant side and the cooling liquid side are coupled through the control valve, the battery pack is cooled together by means of the radiator loop, and in the dual-refrigeration scene of the battery and the passenger compartment, the larger heat exchange amount of the battery can be obtained through series-parallel connection of the heat exchanger and the evaporator; and heat of the high-pressure heat exchange loop and environment heat are absorbed to heat the battery pack so as to save energy consumption.

Description

Technical Field

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

[0002] Pure electric thermal management architecture is a key link in the development of electric vehicle technology. It is related to battery performance, vehicle energy consumption and passenger comfort, and is an important way to improve the overall performance of electric vehicles.

[0003] In simple terms, the pure electric thermal management architecture is a control system for the internal heat of electric vehicles, which involves multiple subsystems such as battery thermal management, drive motor cooling, air conditioning system, and passenger compartment temperature control. In pure electric vehicles, since the battery generates a lot of heat when working, and the battery's performance and life are closely related to temperature, an efficient and intelligent thermal management architecture is crucial.

[0004] In related technologies, thermal management strategies have a poor correlation with the actual driving conditions of the vehicle, which causes the vehicle to have problems of high driving energy consumption and poor driving economy. Therefore, there is huge room for performance optimization in the pure electric thermal management architecture. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a thermal management system, which couples the refrigerant side with the coolant side through a control valve, cools the battery pack with the help of a radiator circuit, and when the battery and the passenger compartment are both cooled, a larger heat exchange capacity of the battery can be obtained by connecting the heat exchanger and the evaporator in series and parallel.

[0006] According to the thermal management system of the first aspect of the utility model, the thermal management system includes: an air-conditioning system; a control valve, wherein a high-pressure heat exchange circuit, a battery heat exchange circuit, a radiator circuit, a heat exchanger circuit and a heating circuit are connected to the control valve, and the control valve selectively connects one or more of the high-pressure heat exchange circuit, the battery heat exchange circuit, the radiator circuit, the heat exchanger circuit and the heating circuit; wherein the air-conditioning system exchanges heat with the heat exchanger circuit and the heating circuit.

[0007] According to the thermal management system of the embodiment of the utility model, the refrigerant side and the coolant side are coupled by a control valve, and the battery pack is cooled together with the help of a radiator circuit. In addition, when the battery and the passenger compartment are cooled dually, a larger heat exchange capacity of the battery can be obtained by connecting the heat exchanger and the evaporator in series and parallel, and the heat of the high-pressure heat exchange circuit and the ambient heat can be absorbed to heat the battery pack to save energy.

[0008] According to some embodiments of the present utility model, the heating circuit includes: an electric heater and a warm air core, the electric heater and the warm air core are connected in series, and the electric heater and the warm air core are respectively connected to the control valve.

[0009] According to some embodiments of the utility model, the heating circuit also includes: a condenser, the condenser and the electric heater and the warm air core are selectively connected in series or in parallel, the condenser is connected to the control valve, and the air conditioning system exchanges heat with the condenser.

[0010] According to some embodiments of the utility model, the heating circuit also includes: a first connecting branch and a second connecting branch, one end of the first connecting branch is connected to a valve port of the control valve and the other end is respectively connected to the condenser and the electric heater, one end of the second connecting branch is connected to another valve port of the control valve and the other end is respectively connected to the condenser and the warm air core.

[0011] According to some embodiments of the utility model, the thermal management system also includes: an overflow tank, a first three-way pipe, a four-way pipe and a first water pump, the four-way pipe is respectively connected to the radiator circuit, the control valve, the first water pump and the overflow tank, and the first three-way pipe is respectively connected to the high-pressure heat exchange circuit, the control valve and the first water pump.

[0012] According to some embodiments of the present utility model, the battery heat exchange circuit includes: a second water pump and a battery pack, the second water pump and the battery pack are connected in series, and the second water pump and the battery pack are respectively connected to the control valve.

[0013] According to some embodiments of the present utility model, the heat exchanger circuit includes: a heat exchanger, both ends of the heat exchanger are respectively connected to the control valve, and the air conditioning system is connected to the heat exchanger.

[0014] According to some embodiments of the utility model, the air conditioning system includes: a compressor, a condenser, an outdoor heat exchanger and an evaporator, the compressor, the condenser, the outdoor heat exchanger and the evaporator are connected in series, and the heat exchanger and the evaporator are arranged in parallel.

[0015] According to some embodiments of the utility model, the air-conditioning system further includes: a coaxial tube, one end of which is arranged between the outdoor heat exchanger and the heat exchanger and the evaporator connected in parallel, and one end of which is arranged between the compressor and the heat exchanger and the evaporator connected in parallel.

[0016] A vehicle according to an embodiment of the second aspect of the utility model includes the thermal management system.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a schematic structural diagram of a thermal management system according to an embodiment of the utility model;

[0020] Figure 2 is a structural schematic diagram of working mode 1 of a thermal management system according to an embodiment of the utility model;

[0021] Figure 3 is a structural schematic diagram of working mode 2 of a thermal management system according to an embodiment of the utility model;

[0022] Figure 4 is a structural schematic diagram of working mode 3 of a thermal management system according to an embodiment of the utility model;

[0023] Figure 5 is a structural schematic diagram of working mode 4 of a thermal management system according to an embodiment of the utility model;

[0024] Figure 6 is a structural schematic diagram of working mode 5 of a thermal management system according to an embodiment of the utility model;

[0025] Figure 7 is a structural schematic diagram of working mode 6 of a thermal management system according to an embodiment of the utility model;

[0026] Figure 8 is a structural schematic diagram of working mode 7 of a thermal management system according to an embodiment of the utility model;

[0027] Fig. 9 is a structural schematic diagram of working mode eight of a thermal management system according to an embodiment of the utility model;

[0028] Fig.10 is a structural schematic diagram of working mode nine of a thermal management system according to an embodiment of the utility model;

[0029] Fig.11 is a structural schematic diagram of working mode 10 of a thermal management system according to an embodiment of the utility model;

[0030] Fig.12 is a structural schematic diagram of an eleventh working mode of a thermal management system according to an embodiment of the utility model;

[0031] Fig.13 is a structural schematic diagram of working mode 12 of a thermal management system according to an embodiment of the utility model;

[0032] Fig.14 is a structural schematic diagram of working mode thirteen of a thermal management system according to an embodiment of the utility model;

[0033] Fig.15 is a structural schematic diagram of a fourteenth working mode of a thermal management system according to an embodiment of the utility model;

[0034] Fig.16 It is a structural schematic diagram of working mode 15 of the thermal management system according to an embodiment of the utility model.

[0035] Reference numerals:

[0036] 100. Thermal management system;

[0037] 11. Air conditioning system; 12. Heating circuit; 13. Heat exchanger circuit; 14. Radiator circuit; 15. High-pressure heat exchange circuit;

[0038] 21. Compressor; 22. Condenser; 23. Drying tank; 24. First stop valve; 25. Ball valve; 26. Outdoor heat exchanger; 27. Coaxial tube; 28. First electronic expansion valve; 29. ​​Heat exchanger; 30. Second electronic expansion valve; 31. Evaporator; 32. Second stop valve; 33. Battery pack; 34. Second water pump; 35. Low-temperature radiator; 36. Four-way pipe; 37. First water pump; 38. First three-way pipe; 39. High-voltage device; 40. Control valve; 41. Third water pump; 42. Electric heater; 43. Warm air core; 44. Overflow tank. DETAILED DESCRIPTION

[0039] The embodiments of the present utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present utility model are described in detail below.

[0040] Reference below Figure 1-Figure 16 A thermal management system 100 according to an embodiment of the present invention is described, and the present invention also provides a vehicle.

[0041] Reference Figure 1 As shown, the thermal management system 100 of the embodiment of the utility model includes: an air conditioning system 11 and a control valve 40, and the control valve 40 is connected to a high-pressure heat exchange circuit 15, a battery heat exchange circuit, a radiator circuit 14, a heat exchange circuit 13 and a heating circuit 12.

[0042] The control valve 40 selectively connects one or more of the high-pressure heat exchange circuit 15 , the battery heat exchange circuit, the radiator circuit 14 , the heat exchange circuit 13 , and the heating circuit 12 .

[0043] The air conditioning system 11 exchanges heat with the heat exchanger circuit 13 and the heating circuit 12 .

[0044] Thus, the refrigerant side and the coolant side are coupled through the control valve 40, and the battery pack 33 is cooled together with the help of the radiator circuit 14. In addition, when the battery and the passenger compartment are cooled dually, a larger heat exchange capacity of the battery can be obtained by connecting the heat exchanger 29 and the evaporator 31 in series and parallel, and the heat of the high-pressure heat exchange circuit 15 and the ambient heat can be absorbed to heat the battery pack 33 to save energy.

[0045] The heating circuit 12 includes: an electric heater 42 and a heater core 43, which are connected in series and are respectively connected to a control valve 40. By connecting the electric heater 42 and the control valve 40, the heat generated by the electric heater 42 can be transmitted not only to the passenger compartment through the heater core 43, but also to the battery heat exchange circuit through the control valve 40, thereby heating the battery pack 33.

[0046] The heating circuit 12 further includes: a condenser 22, the condenser 22 and the electric heater 42 and the heater core 43 are selectively connected in series or in parallel, the condenser 22 is connected to the control valve 40, and the air conditioning system 11 exchanges heat with the condenser 22. In other words, the condenser 22 is not only a part of the air conditioning system 11, but also a part of the heating circuit 12. In this way, when the air conditioning system 11 is running, the condenser 22 generates heat, which can be transferred to the battery heat exchange circuit or the heater core 43 through the control valve 40, so that the heat generated by the condenser 22 can be reasonably used.

[0047] In addition, the heating circuit 12 further includes: a first connecting branch and a second connecting branch, one end of the first connecting branch is connected to a valve port of the control valve 40 and the other end is respectively connected to the condenser 22 and the electric heater 42, one end of the second connecting branch is connected to another valve port of the control valve 40 and the other end is respectively connected to the condenser 22 and the warm air core 43. In other words, the circuit where the condenser 22 is located and the circuit where the electric heater 42 and the warm air core 43 are located can all be connected to the control valve 40 through the first connecting branch and the second connecting branch, that is, the circuit where the condenser 22 is located and the circuit where the electric heater 42 and the warm air core 43 are located share two valve ports, which can simplify the structure of the thermal management system 100.

[0048] And, if Figure 1As shown, the thermal management system 100 further includes: an overflow tank 44, a first three-way pipe 38, a four-way pipe 36 and a first water pump 37. The four-way pipe 36 is respectively connected to the radiator circuit 14, the control valve 40, the first water pump 37 and the overflow tank 44, and the first three-way pipe 38 is respectively connected to the high-pressure heat exchange circuit 15, the control valve 40 and the first water pump 37. In other words, the heat exchange circuit 13 and the high-pressure heat exchange circuit 15 can be connected through the four-way valve, which can effectively simplify the structure of the thermal management system 100.

[0049] In addition, the four-way valve is also connected to an overflow tank 44, that is, by providing the overflow tank 44, liquid replenishment on the coolant side can be achieved.

[0050] In addition, if Figure 1 As shown, the battery heat exchange circuit includes: a second water pump 34 and a battery pack 33, the second water pump 34 and the battery pack 33 are connected in series, and the second water pump 34 and the battery pack 33 are respectively connected to the control valve 40. By connecting the battery pack 33 and the second water pump 34 in series, the coolant is driven to circulate in the battery pack 33 by the second water pump 34, so that the battery pack 33 can absorb or dissipate heat conveniently.

[0051] Reference Figure 1 As shown, the heat exchanger circuit 13 includes: a heat exchanger 29, both ends of the heat exchanger 29 are respectively connected to the control valve 40, and the air conditioning system 11 is connected to the heat exchanger 29. The heat exchanger 29 can be respectively connected to one or more of the high-pressure heat exchange circuit 15, the radiator circuit 14 and the battery heat exchange circuit, so as to achieve heat absorption or heat dissipation through the heat exchanger 29.

[0052] Among them, Figure 1 As shown, the air conditioning system 11 includes: a compressor 21, a condenser 22, an outdoor heat exchanger 26 and an evaporator 31. The compressor 21, the condenser 22, the outdoor heat exchanger 26 and the evaporator 31 are connected in series, and the heat exchanger 29 and the evaporator 31 are arranged in parallel. Among them, the heat exchanger 29 can be connected to one or more of the high-pressure heat exchange circuit 15, the radiator circuit 14 and the battery heat exchange circuit, so as to achieve heat absorption or heat dissipation through the heat exchanger 29. In addition, the evaporator 31 and the heat exchanger 29 are connected in parallel, so that the work of the evaporator 31 and the heat exchanger 29 will not interfere with each other.

[0053] First, the low-temperature and low-pressure gaseous refrigerant is sucked into the compressor 21, and is compressed by the compressor 21 to obtain a high-temperature and high-pressure gaseous refrigerant, and then passes through the condenser 22 to obtain a medium-temperature and high-pressure liquid refrigerant, and then passes through the expansion valve to become a low-temperature and low-pressure liquid refrigerant. Finally, through the action of the evaporator 31 and the blower, the liquid refrigerant absorbs the heat in the cab during the vaporization process and becomes a low-temperature and low-pressure gaseous refrigerant to enter the next refrigeration cycle.

[0054] The temperature of the gaseous refrigerant in the low-pressure refrigerant pipe and the high-pressure refrigerant pipe is as low as possible. The low-pressure pipe should be prevented from absorbing heat, and the high-pressure pipe should be allowed to dissipate heat. The low-pressure refrigerant pipe and the high-pressure refrigerant pipe are coaxial and separated from each other, and heat is effectively conducted between them; the internal low-pressure refrigerant pipe and the external high-pressure refrigerant pipe realize secondary heat exchange in the air conditioning system 11 and improve energy utilization efficiency.

[0055] Among them, Figure 1 As shown, the air conditioning system 11 further includes: a coaxial tube 27, one end of the coaxial tube 27 is arranged between the outdoor heat exchanger 26 and the heat exchanger 29 and evaporator 31 connected in parallel with each other, and one end of the coaxial tube 27 is arranged between the compressor 21 and the heat exchanger 29 and evaporator 31 connected in parallel with each other. In other words, by arranging the coaxial tube 27, secondary heat exchange in the air conditioning system 11 can be achieved, thereby improving energy utilization efficiency.

[0056] Refer to the following Figure 2-Figure 16 The working mode of the thermal management system 100 according to the embodiment of the present invention is described.

[0057] Reference Figure 2 As shown, the working mode 1 of the thermal management system 100 of the embodiment of the utility model is: cooling of the high-voltage device 39 .

[0058] Low-temperature radiator 35 → first water pump 37 → high-pressure device 39 → control valve 40 → low-temperature radiator 35, wherein the H port and the E port of the control valve 40 are connected. In other words, the radiator circuit 14 and the high-pressure heat exchange circuit 15 are connected to each other through the control valve 40, so that the heat generated by the high-pressure device 39 is brought to the low-temperature radiator 35 through the coolant, thereby realizing the heat dissipation of the high-pressure device 39.

[0059] Reference Figure 3 As shown, the second embodiment of the thermal management system 100 of the present invention: the battery pack 33 is passively cooled.

[0060] Battery pack 33 → second water pump 34 → control valve 40 → low-temperature radiator 35 → control valve 40 → battery pack 33, wherein the A port and the E port of the control valve 40 are connected, and the F port and the B port are connected. In other words, the radiator circuit 14 and the battery heat exchange circuit are interconnected through the control valve 40, so that the heat generated by the battery pack 33 is brought to the low-temperature radiator 35 through the coolant, thereby realizing the heat dissipation of the battery pack 33.

[0061] Reference Figure 4 As shown, the third working mode of the thermal management system 100 of the embodiment of the utility model is: the battery pack 33 is actively cooled.

[0062] Coolant side:

[0063] Branch 1: battery pack 33 → second water pump 34 → control valve 40 → heat exchanger 29 → battery pack 33, wherein the A port and D port of the control valve 40 are connected, and the C port and B port are connected. In other words, the heat exchanger circuit 13 and the battery heat exchange circuit are interconnected through the control valve 40, so that the heat generated by the battery pack 33 is brought to the heat exchanger 29 through the coolant, thereby realizing the heat dissipation of the battery pack 33.

[0064] Branch 2: condenser 22→control valve 40→low-temperature radiator 35→first water pump 37→control valve 40→condenser 22, wherein the J port and the E port of the control valve 40 are connected, and the G port and the I port are connected. That is, the radiator circuit 14 and the condenser 22 are connected to each other through the control valve 40, so that the heat generated by the condenser 22 is brought to the low-temperature radiator 35 through the coolant, thereby realizing the heat dissipation of the condenser 22.

[0065] Refrigerant side: compressor 21 → condenser 22 → drying tank 23 → first stop valve 24 → ball valve 25 → outdoor heat exchanger 26 → one-way valve → coaxial tube 27 → first electronic expansion valve 28 → heat exchanger 29 → coaxial tube 27 → compressor 21. In other words, after the refrigerant flows out of the compressor 21, it dissipates heat at the condenser 22 and the outdoor heat exchanger 26, and then the refrigerant enters the heat exchanger 29 to absorb heat, and finally flows back to the compressor 21. Among them, the heat absorbed by the condenser 22 is dissipated through the low-temperature radiator 35.

[0066] In this way, the heat generated by the battery pack 33 is first transferred to the heat exchanger 29 through the coolant, and the heat exchanger 29 then transfers the heat to the condenser 22 through the refrigerant, and the condenser 22 finally transfers the heat to the low-temperature radiator 35.

[0067] Reference Figure 5 As shown, the fourth working mode of the thermal management system 100 of the embodiment of the present utility model is heating of the battery pack 33 .

[0068] Coolant side:

[0069] Branch 1: first water pump 37 → high-pressure device 39 → control valve 40 → heat exchanger 29 → first water pump 37, wherein the H port and D port of the control valve 40 are connected, and the C port and F port are connected. In other words, the heat exchanger circuit 13 and the high-pressure heat exchange circuit 15 are interconnected through the control valve 40, so that the heat generated by the high-pressure device 39 is brought to the heat exchanger 29 through the coolant, thereby realizing the heat dissipation of the high-pressure device 39.

[0070] Branch 2: condenser 22 → control valve 40 → battery pack 33 → second water pump 34 → control valve 40 → condenser 22, wherein the I port and B port of the control valve 40 are connected, and the A port and J port are connected. In addition, the battery heat exchange circuit and the condenser 22 are interconnected through the control valve 40, so that the heat generated by the condenser 22 is brought to the battery pack 33 through the coolant, thereby achieving heat dissipation of the condenser 22 and heating of the battery pack 33.

[0071] Refrigerant side: compressor 21 → condenser 22 → drying tank 23 → first stop valve 24 → ball valve 25 → outdoor heat exchanger 26 → one-way valve → coaxial tube 27 → first electronic expansion valve 28 → heat exchanger 29 → coaxial tube 27 → compressor 21. In other words, after the refrigerant flows out of the compressor 21, it dissipates heat at the condenser 22, and then the refrigerant enters the outdoor heat exchanger 26 and the heat exchanger 29 to absorb heat, and finally flows back to the compressor 21. Among them, the heat absorbed by the condenser 22 is used to heat the battery pack 33.

[0072] Reference Figure 6 As shown, the fifth working mode of the thermal management system 100 of the embodiment of the present utility model is heating of the battery pack 33 .

[0073] Coolant side:

[0074] Branch 1: condenser 22 → control valve 40 → battery pack 33 → second water pump 34 → control valve 40 → condenser 22, wherein the I port and the B port of the control valve 40 are connected, and the A port and the J port are connected. In other words, the condenser 22 and the battery heat exchange circuit are interconnected through the control valve 40, so that the heat generated by the condenser 22 is brought to the battery pack 33 through the coolant, thereby heating the battery pack 33.

[0075] Branch 2: first water pump 37 → high-pressure device 39 → control valve 40 → heat exchanger 29 → first water pump 37, wherein the H port and D port of the control valve 40 are connected, and the C port and F port are connected. In other words, the heat exchanger circuit 13 and the high-pressure heat exchange circuit 15 are interconnected through the control valve 40, so that the heat generated by the high-pressure device 39 is brought to the heat exchanger 29 through the coolant, thereby realizing the heat dissipation of the high-pressure device 39.

[0076] Refrigerant side: compressor 21 → condenser 22 → drying tank 23 → second stop valve 32 → coaxial tube 27 → first electronic expansion valve 28 → heat exchanger 29 → coaxial tube 27 → compressor 21. In other words, after the refrigerant flows out of the compressor 21, it dissipates heat at the condenser 22, then enters the heat exchanger 29 to absorb heat, and finally flows back to the compressor 21.

[0077] In other words, the heat source for heating the battery pack 33 comes from the heat generated by the high-voltage device 39. That is, the heat generated by the high-voltage device 39 is transferred to the heat exchanger 29 through the coolant side, and the heat exchanger 29 absorbs the heat and transfers the heat to the condenser 22 through the refrigerant side, and finally the condenser 22 transfers the heat to the battery pack 33 through the coolant side.

[0078] Reference Figure 7 As shown, the sixth working mode of the thermal management system 100 of the embodiment of the present utility model is heating of the battery pack 33 .

[0079] Warm air core 43 → control valve 40 → battery pack 33 → second water pump 34 → third water pump 41 → electric heater 42 → warm air core 43, wherein the I port and B port of the control valve 40 are connected, and the A port and J port are connected. In other words, the electric heater 42 and the battery heat exchange circuit are interconnected through the control valve 40, so that the heat generated by the electric heater 42 is brought to the battery pack 33 through the coolant, thereby heating the battery pack 33.

[0080] That is, the heat source for heating the battery pack 33 comes from the heat generated by the electric heater 42. This mode can be applied when the battery pack 33 is fully charged and the vehicle is just started.

[0081] Reference Figure 8 As shown, the seventh working mode of the thermal management system 100 of the embodiment of the present utility model is cooling the passenger compartment.

[0082] Coolant side: condenser 22 → control valve 40 → low-temperature radiator 35 → first water pump 37 → control valve 40 → condenser 22, wherein the J port and the E port of the control valve 40 are connected, and the G port and the I port are connected. In other words, the radiator circuit 14 and the condenser 22 are connected to each other through the control valve 40, so that the heat generated by the condenser 22 is brought to the low-temperature radiator 35 through the coolant, thereby realizing the heat dissipation of the condenser 22.

[0083] Refrigerant side: compressor 21 → condenser 22 → drying tank 23 → first stop valve 24 → ball valve 25 → outdoor heat exchanger 26 → check valve → coaxial tube 27 → second electronic expansion valve 30 → evaporator 31 → coaxial tube 27 → compressor 21. In other words, after the refrigerant flows out of the compressor 21, it dissipates heat at the condenser 22 and the outdoor heat exchanger 26, then enters the evaporator 31 to absorb heat, and finally flows back to the compressor 21. Since the refrigerant absorbs heat at the evaporator 31, the passenger compartment can be cooled.

[0084] Reference Fig. 9 As shown, the working mode eight of the thermal management system 100 of the embodiment of the utility model is: passenger compartment heating.

[0085] Warm air core 43 → condenser 22 → third water pump 41 → electric heater 42 → warm air core 43, wherein the I port and J port of the control valve 40 are closed. In other words, the condenser 22, the third water pump 41, the electric heater 42 and the warm air core 43 form a circulating loop, and since the electric heater 42 generates heat when it is started, the heat can be transferred to the warm air core 43, and finally the passenger compartment is heated.

[0086] Reference Fig.10 As shown, the ninth working mode of the thermal management system 100 of the embodiment of the present utility model is heating of the passenger compartment.

[0087] Coolant side:

[0088] Branch 1: first water pump 37 → high-pressure device 39 → control valve 40 → heat exchanger 29 → first water pump 37, wherein the H port and D port of the control valve 40 are connected, and the C port and F port are connected. In other words, the heat exchanger circuit 13 and the high-pressure heat exchange circuit 15 are interconnected through the control valve 40, so that the heat generated by the high-pressure device 39 is brought to the heat exchanger 29 through the coolant, thereby realizing the heat dissipation of the high-pressure device 39.

[0089] Branch 2: warm air core 43 → condenser 22 → third water pump 41 → electric heater 42 → warm air core 43, wherein the I port and J port of the control valve 40 are closed. In other words, the condenser 22, the third water pump 41, the electric heater 42 and the warm air core 43 form a circulating loop. Since the electric heater 42 generates heat when it is started, and the condenser 22 also generates heat when the refrigerant passes through, the heat can be transferred to the warm air core 43, and finally the passenger compartment is heated. Among them, the heat of the condenser 22 comes from the heat exchanger 29, and the heat of the heat exchanger 29 comes from the high-voltage device 39.

[0090] Refrigerant side: compressor 21 → condenser 22 → drying tank 23 → first stop valve 24 → ball valve 25 → outdoor heat exchanger 26 → check valve → coaxial tube 27 → first electronic expansion valve 28 → heat exchanger 29 → coaxial tube 27 → compressor 21. In other words, after the refrigerant flows out of the compressor 21, it dissipates heat at the condenser 22, then enters the outdoor heat exchanger 26 and the heat exchanger 29 to absorb heat, and finally flows back to the compressor 21.

[0091] That is to say, in this mode, the heat for heating the passenger compartment comes from the electric heater 42 , the ambient temperature and the high-voltage device 39 .

[0092] Reference Fig.11 As shown, the working mode ten of the thermal management system 100 of the embodiment of the utility model is: passenger compartment heating.

[0093] Coolant side:

[0094] Branch 1: first water pump 37 → high-voltage device 39 → control valve 40 → heat exchanger 29 → battery pack 33 → second water pump 34 → first water pump 37, wherein the H port of the control valve 40 is connected to the D port, the C port is connected to the B port, and the A port is connected to the F port. In other words, the heat exchanger 29 is connected to the high-voltage heat exchange circuit 15 and the battery heat exchange circuit at the same time, so that the heat generated by the battery pack 33 and the high-voltage device 39 can be transferred to the heat exchanger 29 through the coolant.

[0095] Branch 2: Warm air core 43 → condenser 22 → third water pump 41 → electric heater 42 → warm air core 43, wherein the I port and J port of the control valve 40 are closed. In other words, the condenser 22, the third water pump 41, the electric heater 42 and the warm air core 43 form a circulating loop. Since the electric heater 42 generates heat when it is started, and the condenser 22 also generates heat when the refrigerant passes through, the heat can be transferred to the warm air core 43, and finally the passenger compartment is heated. Among them, the heat of the condenser 22 comes from the heat exchanger 29, and the heat of the heat exchanger 29 comes from the high-voltage device 39 and the battery pack 33.

[0096] Refrigerant side: compressor 21 → condenser 22 → drying tank 23 → first stop valve 24 → ball valve 25 → outdoor heat exchanger 26 → check valve → coaxial tube 27 → first electronic expansion valve 28 → heat exchanger 29 → coaxial tube 27 → compressor 21. In other words, after the refrigerant flows out of the compressor 21, it dissipates heat at the condenser 22, then enters the outdoor heat exchanger 26 and the heat exchanger 29 to absorb heat, and finally flows back to the compressor 21.

[0097] That is to say, in this mode, the heat for heating the passenger compartment comes from the electric heater 42 , the high-voltage device 39 , the ambient heat and the battery pack 33 .

[0098] Reference Fig.12 As shown, the working mode eleven of the thermal management system 100 of the embodiment of the utility model is: dual heating of the battery pack 33 and the passenger compartment.

[0099] Coolant side:

[0100] Branch 1: first water pump 37 → high-pressure device 39 → control valve 40 → heat exchanger 29 → first water pump 37, wherein the H port and D port of the control valve 40 are connected, and the C port and F port are connected. In other words, the heat exchanger 29 is connected to the high-pressure heat exchange circuit 15 and the battery heat exchange circuit at the same time, so that the heat generated by the high-pressure device 39 can be transferred to the heat exchanger 29 through the coolant.

[0101] Branch 2: condenser 22 → control valve 40 → battery pack 33 → second water pump 34 → control valve 40 → condenser 22, the I port and B port of the control valve 40 are connected, and the A port and J port are connected. In other words, the battery heat exchange circuit is connected to the condenser 22, so that the heat generated by the condenser 22 can be transferred to the battery pack 33 through the coolant.

[0102] Branch three: warm air core 43 → condenser 22 → third water pump 41 → electric heater 42 → warm air core 43. That is, the condenser 22, the third water pump 41, the electric heater 42 and the warm air core 43 form a circulating loop. Since the electric heater 42 generates heat when it is started, and the condenser 22 also generates heat when the refrigerant passes through, the heat can be transferred to the warm air core 43, and finally the passenger compartment is heated.

[0103] Refrigerant side: compressor 21 → condenser 22 → drying tank 23 → first stop valve 24 → ball valve 25 → outdoor heat exchanger 26 → check valve → coaxial tube 27 → first electronic expansion valve 28 → heat exchanger 29 → coaxial tube 27 → compressor 21. In other words, after the refrigerant flows out of the compressor 21, it dissipates heat at the condenser 22, then enters the outdoor heat exchanger 26 and the heat exchanger 29 to absorb heat, and finally flows back to the compressor 21.

[0104] That is, in this mode, the heat for heating the battery pack 33 and the passenger compartment comes from the electric heater 42, the high-voltage device 39 and the ambient temperature.

[0105] Reference Fig.13 As shown, the working mode 12 of the thermal management system 100 of the embodiment of the utility model is: dual cooling of the battery pack 33 and the passenger compartment.

[0106] Coolant side:

[0107] Branch 1: battery pack 33 → second water pump 34 → control valve 40 → heat exchanger 29 → battery pack 33, wherein the A port and D port of the control valve 40 are connected, and the C port and B port are connected. In other words, the heat exchanger circuit 13 and the battery heat exchange circuit are interconnected through the control valve 40, so that the heat generated by the battery pack 33 is brought to the heat exchanger 29 through the coolant, thereby realizing the heat dissipation of the battery pack 33.

[0108] Branch 2: condenser 22→control valve 40→low-temperature radiator 35→first water pump 37→control valve 40→condenser 22, wherein the J port and the E port of the control valve 40 are connected, and the G port and the I port are connected. In other words, the radiator circuit 14 and the condenser 22 are connected to each other through the control valve 40, so that the heat generated by the condenser 22 is brought to the low-temperature radiator 35 through the coolant, thereby realizing the heat dissipation of the condenser 22.

[0109] Refrigerant side:

[0110] Branch 1: compressor 21 → condenser 22 → drying tank 23 → first stop valve 24 → ball valve 25 → outdoor heat exchanger 26 → check valve → coaxial tube 27 → second electronic expansion valve 30 → evaporator 31 → coaxial tube 27 → compressor 21. In other words, after the refrigerant flows out of the compressor 21, it dissipates heat at the condenser 22 and the outdoor heat exchanger 26, and then enters the evaporator 31 to absorb heat, and finally flows back to the compressor 21. Since the refrigerant absorbs heat at the evaporator 31, the passenger compartment can be cooled.

[0111] Branch 2: compressor 21 → condenser 22 → drying tank 23 → first stop valve 24 → ball valve 25 → outdoor heat exchanger 26 → one-way valve → coaxial tube 27 → first electronic expansion valve 28 → heat exchanger 29 → coaxial tube 27 → compressor 21. In other words, after the refrigerant flows out of the compressor 21, it dissipates heat at the condenser 22 and the outdoor heat exchanger 26, then enters the heat exchanger 29 to absorb heat, and finally flows back to the compressor 21.

[0112] The heat exchanger 29 and the battery pack 33 are connected in series, so that when the heat exchanger 29 absorbs heat, the battery pack 33 can be cooled.

[0113] Reference Fig.14 As shown, the working mode thirteen of the thermal management system 100 of the embodiment of the utility model is: battery temperature equalization function.

[0114] Battery pack 33 → second water pump 34 → battery pack 33, wherein the A port and the B port of the control valve 40 are connected. In other words, the battery pack 33 and the second water pump 34 are connected in series, so that the coolant circulates in the battery pack 33, thereby achieving uniform temperature of the battery pack 33.

[0115] Reference Fig.15 As shown, the working mode fourteen of the thermal management system 100 of the embodiment of the utility model is: dehumidification of the passenger compartment.

[0116] Coolant side:

[0117] Branch 1: first water pump 37 → high-voltage device 39 → control valve 40 → heat exchanger 29 → battery pack 33 → second water pump 34 → first water pump 37, wherein the H port of the control valve 40 is connected to the D port, the C port is connected to the B port, and the A port is connected to the F port. In other words, the heat exchanger 29 is connected to the high-voltage heat exchange circuit 15 and the battery heat exchange circuit at the same time, so that the heat generated by the battery pack 33 and the high-voltage device 39 can be transferred to the heat exchanger 29 through the coolant.

[0118] The principle of the dehumidification function is that water vapor will condense into liquid when air passes through a surface with a lower temperature. At this time, the temperature inside the passenger compartment will decrease. When the temperature of the passenger compartment needs to be kept constant, the heater core 43 needs to be started.

[0119] Branch 2: warm air core 43 → condenser 22 → third water pump 41 → electric heater 42 → warm air core 43, wherein the I port and J port of the control valve 40 are closed. That is, the condenser 22, the third water pump 41, the electric heater 42 and the warm air core 43 form a circulating loop, and since the electric heater 42 generates heat when it is started, and the condenser 22 also generates heat when the refrigerant passes through, the heat can be transferred to the warm air core 43, and finally the passenger compartment is heated.

[0120] Refrigerant side:

[0121] Branch 1: compressor 21 → condenser 22 → drying tank 23 → first stop valve 24 → ball valve 25 → outdoor heat exchanger 26 → check valve → coaxial tube 27 → second electronic expansion valve 30 → evaporator 31 → coaxial tube 27 → compressor 21. In other words, after the refrigerant flows out of the compressor 21, it dissipates heat at the condenser 22, and then the refrigerant enters the outdoor heat exchanger 26 and evaporator 31 to absorb heat, and finally flows back to the compressor 21. Since the refrigerant absorbs heat at the evaporator 31, the passenger compartment can be dehumidified.

[0122] Branch 2: compressor 21 → condenser 22 → drying tank 23 → first stop valve 24 → ball valve 25 → outdoor heat exchanger 26 → check valve → coaxial tube 27 → first electronic expansion valve 28 → heat exchanger 29 → coaxial tube 27 → compressor 21. In other words, after the refrigerant flows out of the compressor 21, it dissipates heat at the condenser 22, and then the refrigerant enters the outdoor heat exchanger 26 and the heat exchanger 29 to absorb heat, and finally flows back to the compressor 21. Since the refrigerant releases heat at the condenser 22, indirect heating of the passenger compartment can be achieved.

[0123] Reference Fig.16 As shown, the working mode 15 of the thermal management system 100 of the embodiment of the utility model is heat pump defrosting.

[0124] Coolant side: first water pump 37 → high-voltage device 39 → control valve 40 → heat exchanger 29 → battery pack 33 → second water pump 34 → first water pump 37, wherein the H port of the control valve 40 is connected to the D port, the C port is connected to the B port, and the A port is connected to the F port. In other words, the heat exchanger 29 is connected to the high-voltage heat exchange circuit 15 and the battery heat exchange circuit at the same time, so that the heat generated by the battery pack 33 and the high-voltage device 39 can be transferred to the heat exchanger 29 through the coolant.

[0125] Refrigerant side: compressor 21 → condenser 22 → drying tank 23 → first stop valve 24 → ball valve 25 → outdoor heat exchanger 26 → one-way valve → coaxial tube 27 → first electronic expansion valve 28 → heat exchanger 29 → coaxial tube 27 → compressor 21. When the air-conditioning system 11 is in the heating working mode for a long time, the outdoor heat exchanger 26 will frost, so the heat of the high-voltage device 39 and the battery pack 33 is transferred to the outdoor heat exchanger 26 through the air-conditioning system 11, thereby achieving defrosting of the outdoor heat exchanger 26.

[0126] A vehicle according to an embodiment of the second aspect of the utility model includes a thermal management system 100 .

[0127] In the description of the present invention, 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 a limitation on the present invention.

[0128] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0129] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A thermal management system, characterized in that: include: Air conditioning system; a control valve, wherein the control valve is connected to a high-pressure heat exchange circuit, a battery heat exchange circuit, a radiator circuit, a heat exchange circuit, and a heating circuit, and the control valve selectively connects one or more of the high-pressure heat exchange circuit, the battery heat exchange circuit, the radiator circuit, the heat exchange circuit, and the heating circuit; The air conditioning system exchanges heat with the heat exchanger circuit and the heating circuit.

2. The thermal management system according to claim 1, characterized in that: The heating circuit comprises: an electric heater and a warm air core, the electric heater and the warm air core are connected in series with each other, and the electric heater and the warm air core are communicated with the control valve respectively.

3. The thermal management system according to claim 2, characterized in that: The heating circuit further includes: a condenser, the condenser and the electric heater and the warm air core are selectively connected in series or in parallel, the condenser is communicated with the control valve, and the air conditioning system exchanges heat with the condenser.

4. The thermal management system according to claim 3, characterized in that: The heating circuit also includes: a first connecting branch and a second connecting branch, one end of the first connecting branch is connected to a valve port of the control valve and the other end is connected to the condenser and the electric heater respectively, and one end of the second connecting branch is connected to another valve port of the control valve and the other end is connected to the condenser and the heater core respectively.

5. The thermal management system according to claim 1, characterized in that: Also includes: An overflow tank, a first three-way pipe, a four-way pipe and a first water pump, wherein the four-way pipe is respectively connected to the radiator circuit, the control valve, the first water pump and the overflow tank, and the first three-way pipe is respectively connected to the high-pressure heat exchange circuit, the control valve and the first water pump.

6. The thermal management system according to claim 1, characterized in that: The battery heat exchange circuit includes: a second water pump and a battery pack, the second water pump and the battery pack are connected in series, and the second water pump and the battery pack are respectively connected to the control valve.

7. The thermal management system according to claim 1, characterized in that: The heat exchanger circuit includes: a heat exchanger, both ends of the heat exchanger are respectively connected to the control valve, and the air conditioning system is connected to the heat exchanger.

8. The thermal management system according to claim 7, characterized in that: The air conditioning system comprises: a compressor, a condenser, an outdoor heat exchanger and an evaporator. The compressor, the condenser, the outdoor heat exchanger and the evaporator are connected in series, and the heat exchanger and the evaporator are arranged in parallel.

9. The thermal management system according to claim 8, characterized in that: The air conditioning system further includes: a coaxial tube, one end of which is arranged between the outdoor heat exchanger and the heat exchanger and the evaporator connected in parallel, and one end of which is arranged between the compressor and the heat exchanger and the evaporator connected in parallel.

10. A vehicle, characterized in that: include: The thermal management system according to any one of claims 1 to 9.

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