Thermal management system and vehicle

Abstract

The invention discloses a thermal management system and a vehicle, and the thermal management system comprises an air conditioning system which comprises a condenser; the first control valve communicates with a high-pressure heat exchange loop, a battery heat exchange loop, a radiator loop, a heat exchanger loop, a heating loop and a circulation loop, and the first control valve selectively communicates with one or more of the high-pressure heat exchange loop, the battery heat exchange loop, the radiator loop, the heat exchanger loop, the heating loop and the circulation loop; the air conditioning system exchanges heat with the heat exchanger loop and the heating loop, and the heating loop communicates with the condenser; one end of the second control valve is communicated with the circulation loop and the battery heat exchange loop, the other end of the second control valve is communicated with the radiator loop, and the other end of the second control valve is communicated with the condenser. The flow direction of the cooling liquid is controlled through the first control valve and the second control valve, flow resistance in all working modes can be reduced, the energy utilization rate is increased, and the system is suitable for platform development.

Description

Technical Field

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

[0002] 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.

[0003] In related technologies, the integrated architecture of the coolant side of the pure electric thermal management system has developed from the original three-way valve + four-way valve form to a five-way valve, then to an eight-way valve, and then to a nine-way valve. However, the water resistance in each working mode can be further optimized, and there is still room for improvement in energy utilization. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a thermal management system, which controls the flow direction of the coolant through a first control valve and a second control valve, can reduce the flow resistance in each working mode, improve energy utilization, and is suitable for platform development.

[0005] According to the thermal management system of the first aspect of the present invention, the thermal management system includes: an air conditioning system, the air conditioning system includes a condenser; a first control valve, the first control valve is connected to a high-pressure heat exchange circuit, a battery heat exchange circuit, a radiator circuit, a heat exchange circuit, a heating circuit and a circulation circuit, the first 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, the heating circuit and the circulation circuit, the air conditioning system exchanges heat with the heat exchange circuit and the heating circuit, and the heating circuit is connected to the condenser. A second control valve, one end of the second control valve is connected to the circulation circuit and the battery heat exchange circuit, another end of the second control valve is connected to the radiator circuit, and another end of the second control valve is connected to the condenser.

[0006] According to the thermal management system of the embodiment of the present invention, the flow direction of the coolant is controlled by the first control valve and the second control valve, thereby reducing the situation where the coolant flows through components that do not need temperature regulation. This can reduce the flow resistance in each working mode, improve energy utilization, simplify the thermal management strategy, and is suitable for platform development.

[0007] According to some embodiments of the present invention, the circulation loop includes: a first branch, one end of the first branch is connected to the first control valve; and the thermal management system also includes: a second branch, one end of the second branch is connected to the battery heat exchange loop, and the other end of the first branch and the other end of the second branch are connected to the second control valve.

[0008] According to some embodiments of the present invention, the circulation loop includes: a third branch, one end of the third branch is connected to the first control valve, and the other end of the third branch is connected to the first control valve and the heating circuit.

[0009] According to some embodiments of the present invention, the heat exchanger loop includes: a heat exchanger, two ends of the heat exchanger loop are respectively connected to the first control valve, and the air conditioning system is connected to the heat exchanger.

[0010] According to some embodiments of the present invention, the heating circuit includes: an electric heater and a heater core, the electric heater and the heater core are connected in series, one end of the condenser is connected to the second control valve and one end of the heater core, and the other end of the condenser is connected to the other end of the heater core and the first control valve.

[0011] According to some embodiments of the present invention, the air conditioning system includes: a compressor and an evaporator, wherein the compressor, the evaporator and the condenser are connected in series; the heat exchanger circuit includes: a heat exchanger, wherein the heat exchanger and the evaporator are connected in parallel and in series with the condenser.

[0012] According to some embodiments of the present invention, the radiator circuit includes: a radiator, one end of which is connected to the first control valve; and the high-pressure heat exchange circuit includes: a motor, a motor controller and a first water pump, the motor, the motor controller and the first water pump are connected in series with each other; and the thermal management system also includes: a fourth branch, one end of the fourth branch is connected to the first control valve, and the first water pump is connected to the other end of the fourth branch.

[0013] According to some embodiments of the present invention, the heat exchanger circuit includes: a heat exchanger, one end of which is connected to the first control valve; and, 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 one end of the second water pump is connected to the first control valve; and, the thermal management system also includes: a fifth branch, one end of the fifth branch is connected to the first control valve, the battery pack and the heat exchanger are connected in parallel and connected to the other end of the fifth branch.

[0014] According to some embodiments of the present invention, the thermal management system further comprises: an overflow tank and a four-way pipe, wherein the four-way pipe is respectively connected to the radiator circuit, the first control valve, the high-pressure heat exchange circuit and the overflow tank.

[0015] A vehicle according to an embodiment of the second aspect of the present invention includes the thermal management system.

[0016] The beneficial effects of the embodiments of the present invention are as follows: the flow direction of the coolant is controlled by the first control valve and the second control valve, thereby reducing the situation where the coolant flows through components that do not require temperature regulation, reducing the flow resistance in each working mode, improving energy utilization, simplifying the thermal management strategy, and being suitable for platform development.

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

[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: Figure 1 is a schematic diagram of a thermal management system according to an embodiment of the present invention; Figure 2 is a schematic diagram of working mode 1 of a thermal management system according to an embodiment of the present invention; Figure 3 is a schematic diagram of working mode 2 of a thermal management system according to an embodiment of the present invention; Figure 4 is a schematic diagram of working mode 3 of a thermal management system according to an embodiment of the present invention; Figure 5 is a schematic diagram of operating mode 4 of a thermal management system according to an embodiment of the present invention; Figure 6 is a schematic diagram of working mode 5 of a thermal management system according to an embodiment of the present invention; Figure 7 is a schematic diagram of operating mode 6 of a thermal management system according to an embodiment of the present invention.

[0019] Reference numerals: 100. Thermal management system; 10. Air conditioning system; 11. Compressor; 12. Evaporator; 20. High-pressure heat exchange circuit; 21. Motor; 22. Motor controller; 23. First water pump; 30. Battery heat exchange circuit; 31. Second water pump; 32. Battery pack; 40. Radiator circuit; 41. Radiator; 50. heat exchanger circuit; 51. heat exchanger; 60. Heating circuit; 61. Condenser; 62. Electric heater; 63. Warm air core; 64. Third water pump; 70. Circulation loop; 71. First branch; 72. Second branch; 73. Third branch; 74. One-way valve; 81. First control valve; 82. Second control valve; 83. Fourth branch; 84. Fifth branch; 85. Overflow tank; 86. Four-way pipe. DETAILED DESCRIPTION

[0020] Embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Embodiments of the present invention are described in detail below.

[0021] Reference below Figure 1-Figure 7 A thermal management system 100 according to an embodiment of the present invention is described, and the present invention also provides a vehicle.

[0022] Reference Figure 1 As shown, the thermal management system 100 according to the embodiment of the present invention includes: an air conditioning system 10 , a first control valve 81 and a second control valve 82 .

[0023] The air conditioning system 10 includes a condenser 61 .

[0024] The first control valve 81 is connected to the high-pressure heat exchange circuit 20, the battery heat exchange circuit 30, the radiator circuit 40, the heat exchanger circuit 50, the heating circuit 60 and the circulation circuit 70. The first control valve 81 selectively connects one or more of the high-pressure heat exchange circuit 20, the battery heat exchange circuit 30, the radiator circuit 40, the heat exchanger circuit 50, the heating circuit 60 and the circulation circuit 70. The air-conditioning system 10 exchanges heat with the heat exchanger circuit 50 and the heating circuit 60, and the heating circuit 60 is connected to the condenser 61.

[0025] In this way, the heat in the high-pressure heat exchange circuit 20, the battery heat exchange circuit 30, the radiator circuit 40, the heat exchanger circuit 50, the heating circuit 60 and the circulation circuit 70 can flow to each other through the first control valve 81. Under the control of the vehicle controller, the heat can flow between different circuits or devices according to the thermal management mode of the vehicle. Different working modes can be flexibly selected in different vehicle usage scenarios to avoid frequent use of the same heat source and improve the thermal management efficiency of the system.

[0026] The thermal management system 100 uses the first control valve 81 to control multiple circuits. Each circuit does not interfere with each other but can exchange heat with each other through the first control valve 81. This can avoid the situation where the heat flows through the components that do not need temperature regulation in a certain working mode, reduce heat loss, reduce flow resistance in various modes, and improve energy utilization. It also saves space inside the vehicle and provides more possibilities for the subsequent installation of new functions and technologies.

[0027] Specifically, the first control valve 81 may be a nine-way valve, wherein the refrigerant flows in the air conditioning system 10, and the coolant flows in the high-pressure heat exchange loop 20, the battery heat exchange loop 30, the radiator loop 40, the heat exchange loop 50, the heating loop 60, and the circulation loop 70. Further, the first control valve 81 includes a first valve port, a second valve port, a third valve port, a fourth valve port, a fifth valve port, a sixth valve port, a seventh valve port, an eighth valve port, and a ninth valve port, which are respectively Figure 1 "a", "b", "c", "d", "e", "f", "g", "h", and "i" in the text box.

[0028] One end of the second control valve 82 is connected to the circulation loop 70 and the battery heat exchange loop 30, another end of the second control valve 82 is connected to the radiator loop 40, and another end of the second control valve 82 is connected to the condenser 61. Specifically, the second control valve 82 includes a tenth valve port, an eleventh valve port, and a twelfth valve port. The tenth valve port is connected to the circulation loop 70 and the battery heat exchange loop 30, the eleventh valve port is connected to the condenser 61, and the twelfth valve port is connected to the radiator loop 40. Among them, the tenth valve port is Figure 1 The "j" in the figure indicates that the eleventh valve port is Figure 1 The "k" in the figure is the twelfth valve port. Figure 1 The "l" in .

[0029] By controlling the opening and closing of the first control valve 81 and the second control valve 82, the flow direction of the coolant can be controlled to achieve proportional adjustment of the coolant in different working modes. For example, when heating the passenger compartment and the battery pack 32, the heat in the radiator circuit 40 and the high-pressure heat exchange circuit 20 can be used, or only the heat in the high-pressure heat exchange circuit 20 can be used, thereby simplifying the heating strategy under the dual heating conditions of the passenger compartment and the battery pack 32.

[0030] Specifically, referring to the working mode three described below, the coolant absorbs the ambient temperature through the radiator 41, and then absorbs the heat in the high-pressure heat exchange circuit 20 to achieve the function of heating the passenger compartment or the battery, or referring to the working mode four described below, the coolant absorbs the heat in the high-pressure heat exchange circuit 20 to achieve the function of heating the passenger compartment or the battery pack 32.

[0031] In addition, the full-function development of component thermal management is achieved through the form of the first control valve 81 and the second control valve 82, which reduces the difficulty of valve body development. Combined with the flow plate and the integrated module, the development cost is further reduced, supporting the platform development of pure electric vehicle models by the main engine manufacturer.

[0032] Therefore, by controlling the flow direction of the coolant through the first control valve 81 and the second control valve 82, the coolant can be reduced from flowing through components that do not require temperature regulation. This can reduce the flow resistance in each working mode, improve energy utilization, simplify the thermal management strategy, and be suitable for platform development.

[0033] The circulation loop 70 includes a first branch 71 and a second branch 72. One end of the first branch 71 is connected to the first control valve 81, one end of the second branch 72 is connected to the battery heat exchange loop 30, and the other end of the first branch 71 and the other end of the second branch 72 are connected to the second control valve 82. Specifically, one end of the second branch 72 is connected to the battery heat exchange loop 30 in one direction, and the coolant can flow from the battery heat exchange loop 30 to the second branch 72. The first branch 71 flows in both directions, one end of the first branch 71 is connected to the "g" valve port of the first control valve 81, and the other end of the first branch 71 is connected to the other end of the second branch 72. The coolant can flow from the "g" valve port of the first control valve 81 to the first branch 71, or the coolant of the battery heat exchange loop 30 can flow to the first branch 71 through the second branch 72, and finally flow to the "g" valve port of the first control valve 81.

[0034] The circulation loop 70 includes a third branch 73, one end of the third branch 73 is connected to the first control valve 81, and the other end of the third branch 73 is connected to the first control valve 81 and the heating loop 60. Specifically, one end of the third branch 73 is connected to the "f" valve port of the first control valve 81, and when the "f" valve port and the "g" valve port of the first control valve 81 are connected, the first branch 71 and the third branch 73 are connected, and the other end of the third branch 73 is provided with a one-way valve 74 and a three-way valve, and the other end of the third branch 73 is connected to the "h" valve port of the first control valve 81 or the heating loop 60. By providing the one-way valve 74, the coolant flowing out of the heating loop 60 is prevented from flowing back to the "f" valve port of the first control valve 81, thereby improving the stability of the thermal management system 100.

[0035] The heat exchanger loop 50 includes a heat exchanger 51, and both ends of the heat exchanger loop 50 are respectively connected to the first control valve 81, and the air conditioning system 10 is connected to the heat exchanger 51. Specifically, both ends of the heat exchanger loop 50 are respectively connected to the "d" valve port and the "e" valve port of the first control valve 81, so as to achieve the connection between the heat exchanger loop 50 and other loops, and the air conditioning system 10 is connected to the heat exchanger 51, so that the heat exchanger 51 exchanges heat with the air conditioning system 10 and can transfer heat to other loops.

[0036] The heating circuit 60 includes a condenser 61, an electric heater 62 and a heater core 63. The electric heater 62 and the heater core 63 are connected in series. One end of the condenser 61 is connected to the second control valve 82 and one end of the heater core 63, and the other end of the condenser 61 is connected to the other end of the heater core 63 and the first control valve 81. Specifically, one end of the condenser 61 can be connected to the "k" valve port of the second control valve 82, and can also be connected to the heater core 63. The other end of the condenser 61 is connected to the other end of the heater core 63 and the "h" valve port of the first control valve 81. In this way, the coolant can flow through the condenser 61 for heat exchange and then release heat at the heater core 63 to achieve the function of heating the passenger compartment. It can also flow to other circuits through the first control valve 81.

[0037] In addition, the heating circuit 60 also includes a third water pump 64, one end of the third water pump 64 is connected to the "k" valve port of the second control valve 82 and the heater core 63, and the other end is connected to the condenser 64, for driving the coolant to circulate in the heating circuit 60, and the opening or opening degree of the third water pump 64 can be adjusted according to demand.

[0038] The air conditioning system 10 includes a compressor 11 and an evaporator 12. The compressor 11, the evaporator 12 and the condenser 61 are connected in series, and the heat exchanger 51 and the evaporator 12 are connected in parallel and in series with the condenser 61. The refrigerant in the compressor 11 releases heat at the condenser 61, and according to different working modes, it can flow to the heat exchanger 51 to exchange heat with the coolant side, or flow to the evaporator 12 to evaporate and absorb heat, so as to achieve passenger compartment cooling.

[0039] The radiator circuit 40 includes a radiator 41, and one end of the radiator 41 is connected to the first control valve 81. Specifically, one end of the radiator 41 is connected to the "i" valve port of the first control valve 81, and the coolant flows in the radiator circuit 40 in one direction, flows from the "i" valve port through the radiator 41 to dissipate heat, and the cooled coolant flows out of the radiator circuit 40.

[0040] The high-pressure heat exchange circuit 20 includes a motor 21, a motor controller 22 and a first water pump 23, which are connected in series. The motor 21 and the motor controller 22 generate heat during operation, and the temperature of the coolant increases after heat exchange with the motor 21 and the motor controller 22, which can transfer the heat and realize the function of cooling or heating other components of the motor 21 and the motor controller 22.

[0041] The opening or closing or opening degree of the first water pump 23 can be adjusted according to demand.

[0042] Furthermore, the thermal management system 100 further includes a fourth branch 83, one end of which is connected to the first control valve 81, and the first water pump 23 is connected to the other end of the fourth branch 83. Specifically, one end of the fourth branch 83 is connected to the valve port "b" of the first control valve 81. In some working modes, referring to Figure 2-Figure 4 As shown, the radiator 41 and the first water pump 23 are connected in series. In some working modes, referring to Figure 5-Figure 7 As shown, the radiator 41 and the first water pump 23 are connected in parallel, and at this time, the other end of the fourth branch 83 is connected to the first water pump 23 in the high-pressure heat exchange circuit 20.

[0043] The heat exchanger circuit 50 includes a heat exchanger 51 , one end of which is in communication with the first control valve 81 . Specifically, one end of the heat exchanger 51 is in communication with the “e” port of the first control valve 81 .

[0044] And, the battery heat exchange circuit 30 includes a second water pump 31 and a battery pack 32, the second water pump 31 and the battery pack 32 are connected in series, and one end of the second water pump 31 is connected to the first control valve 81. Specifically, one end of the second water pump 31 is connected to the "c" valve port of the first control valve 81.

[0045] Furthermore, the thermal management system 100 further includes a fifth branch 84, one end of which is connected to the first control valve 81, and the battery pack 32 and the heat exchanger 51 are connected in parallel and connected to the other end of the fifth branch 84. Specifically, one end of the fifth branch 84 is connected to the valve port "d" of the first control valve 81. In some working modes, the battery pack 32 and the heat exchanger 51 are connected in series, and the heat of the battery pack 32 can be transferred to the heat exchanger 51 to exchange heat with the air conditioning system 10. In other working modes, the battery pack 32 and the heat exchanger 51 are connected in parallel, and the battery pack 32 is connected to the other end of the fifth branch 84, and the heat of the battery pack 32 is transferred through the first control valve 81.

[0046] The thermal management system 100 further includes an overflow tank 85 and a cross-tube 86, wherein the cross-tube 86 is respectively connected to the radiator circuit 40, the first control valve 81, the high-pressure heat exchange circuit 20 and the overflow tank 85. The overflow tank 85 is used to maintain the pressure balance on the coolant side, and is connected to the radiator circuit 40, the first control valve 81, the high-pressure heat exchange circuit 20 and the overflow tank 85 through the cross-tube 86. In various working modes, the overflow tank 85 can be connected to the circuit on the coolant side to maintain the pressure balance on the coolant side.

[0047] Refer to the following Figure 2-Figure 7 The working mode of the thermal management system 100 according to the embodiment of the present invention is described.

[0048] Reference Figure 2 As shown, the working mode 1 of the thermal management system 100 of the embodiment of the present invention is: The valve ports "a" and "f" of the first control valve 81 are connected, the valve ports "h" and "i" are connected, the radiator circuit 40 is connected in series with the high-pressure heat exchange circuit 20, and is connected with the third branch 73 through the first control valve 81, thereby realizing the cooling function of high-pressure components.

[0049] The coolant flows in the following directions: radiator 41 → first water pump 23 → motor controller 22 → motor 21 → first control valve 81 → check valve 74 → first control valve 81 → radiator 41 .

[0050] The coolant dissipates heat at the radiator 41 and becomes low-temperature coolant. When passing through the motor controller 22 and the motor 21, it exchanges heat and becomes high-temperature coolant. The temperature of the motor controller 22 and the motor 21 decreases. The high-temperature coolant passes through the first control valve 81 and the third branch 73 and returns to the radiator 41 for cooling, and continues to circulate.

[0051] The valve port "c" and the valve port "e" of the first control valve 81 are connected, and the battery heat exchange circuit 30 is connected in series with the heat exchanger circuit 50. The heat exchanger 51 exchanges heat with the air-conditioning system 10 to realize the active cooling function of the battery pack 32.

[0052] Coolant flow direction: second water pump 31 → battery pack 32 → heat exchanger 51 → first control valve 81 → second water pump 31; The refrigerant flows from: compressor 11 →condenser 61 →heat exchanger 51 →compressor 11 .

[0053] Driven by the second water pump 31 , the coolant exchanges heat with the battery pack 32 , the temperature of the battery pack 32 decreases, and the high-temperature coolant exchanges heat with the low-temperature refrigerant of the air-conditioning system 10 at the heat exchanger 51 , and flows back to the second water pump 31 through the first control valve 81 .

[0054] The compressor 11 compresses the refrigerant into a high-temperature and high-pressure gas, which releases heat at the condenser 61 to become a low-temperature refrigerant, absorbs heat from the coolant side at the heat exchanger 51 to become a gas, and finally flows into the compressor 11 .

[0055] It should be noted that the refrigerant releases heat at the condenser 61, and the temperature of the coolant side increases, which can be used to heat the passenger compartment. It can also cooperate with the evaporator 12 to achieve passenger compartment cooling or other purposes. There is no limitation here. The same applies to other working modes below.

[0056] The valve ports "a" and "f" of the first control valve 81 are connected, the valve ports "h" and "i" are connected, the valve ports "c" and "e" are connected, and the valve ports "k" and "l" of the second control valve 82 are connected, thereby realizing parallel cooling of the condenser 61 and the high-pressure heat exchange circuit 20.

[0057] Coolant flow direction: radiator 41 → first water pump 23 → motor controller 22 → motor 21 → first control valve 81 → check valve 74 → first control valve 81 → radiator 41; Condenser 61 → electric heater 62 → first control valve 81 → radiator 41 → first water pump 23 → second control valve 82 → third water pump 64 → condenser 61; The refrigerant flows from: compressor 11 →condenser 61 →heat exchanger 51 →compressor 11 .

[0058] The coolant dissipates heat at the radiator 41 and becomes low-temperature coolant. A part of the coolant exchanges heat to become high-temperature coolant when passing through the motor controller 22 and the motor 21. The temperature of the motor controller 22 and the motor 21 decreases. The high-temperature coolant passes through the first control valve 81 and the third branch 73 and returns to the radiator 41 for cooling. Another part of the coolant exchanges heat with the condenser 61, the refrigerant of the air-conditioning system 10 is cooled, and the high-temperature coolant returns to the radiator 41 for dissipation of heat.

[0059] The compressor 11 compresses the refrigerant into a high-temperature and high-pressure gas, which releases heat at the condenser 61 to become a low-temperature refrigerant, absorbs heat from the coolant side at the heat exchanger 51 to become a gas, and finally flows into the compressor 11 .

[0060] The electric heater 62 is turned on according to the vehicle condition to heat the passenger compartment and is turned off when not needed. The same applies to the electric heater 62 in other working modes below.

[0061] In addition, the low-temperature and high-pressure refrigerant after releasing heat at the condenser 61 can also be converted into a low-temperature and low-pressure refrigerant through a stop valve, and return to the compressor 11 directly through a gas-liquid separator without passing through the heat exchanger 51, thereby forming a hot gas bypass circuit. The air-conditioning system 10 in other working modes below can form a hot gas bypass circuit.

[0062] Reference Figure 3 As shown, the second working mode of the thermal management system 100 of the embodiment of the present invention is: The "a" valve port and the "c" valve port of the first control valve 81 are connected, the "d" valve port and the "f" valve port are connected, and the "h" valve port and the "i" valve port are connected. The radiator circuit 40 is connected in series with the high-pressure heat exchange circuit 20, and is connected with the battery heat exchange circuit 30 and the third branch 73 through the first control valve 81, thereby realizing the cooling function of high-voltage components and batteries.

[0063] The coolant flows from: radiator 41 → first water pump 23 → motor controller 22 → motor 21 → first control valve 81 → second water pump 31 → battery pack 32 → first control valve 81 → check valve 74 → first control valve 81 → radiator 41 .

[0064] The coolant dissipates heat at the radiator 41 and becomes low-temperature coolant. When passing through the motor controller 22, the motor 21 and the battery, it exchanges heat and becomes high-temperature coolant. The temperatures of the motor controller 22, the motor 21 and the battery are reduced. The high-temperature coolant returns to the radiator 41 to cool down after passing through the first control valve 81 and the third branch 73, and continues to circulate.

[0065] The "a" valve port and the "c" valve port of the first control valve 81 are connected, the "d" valve port and the "f" valve port are connected, the "h" valve port and the "i" valve port are connected, and the "k" valve port and the "l" valve port of the second control valve 82 realize the parallel cooling function of the high-voltage components, the battery and the condenser 61.

[0066] Coolant flow direction: radiator 41 → first water pump 23 → motor controller 22 → motor 21 → first control valve 81 → second water pump 31 → battery pack 32 → first control valve 81 → check valve 74 → first control valve 81 → radiator 41; Condenser 61 →electric heater 62 →first control valve 81 →radiator 41 →first water pump 23 →second control valve 82 →third water pump 64 →condenser 61 .

[0067] Refrigerant flow: compressor 11 → condenser 61 → heat exchanger 51 → compressor 11; Compressor 11 →condenser 61 →evaporator 12 →compressor 11 .

[0068] The coolant dissipates heat at the radiator 41 and becomes low-temperature coolant. A part of the coolant exchanges heat to become high-temperature coolant when passing through the motor controller 22, the motor 21 and the battery. The temperatures of the motor controller 22, the motor 21 and the battery are reduced. The high-temperature coolant returns to the radiator 41 to cool down after passing through the third branch 73. Another part of the coolant exchanges heat with the condenser 61, the refrigerant of the air-conditioning system 10 is cooled, and the high-temperature coolant returns to the radiator 41 to dissipate heat.

[0069] The compressor 11 compresses the refrigerant into a high-temperature and high-pressure gas, which releases heat at the condenser 61 to become a low-temperature refrigerant. It can absorb heat from the coolant side at the heat exchanger 51 to become a gas, or it can evaporate and absorb heat at the evaporator 12 to cool the passenger compartment, and finally flow into the compressor 11.

[0070] Reference Figure 4 As shown, the working mode 3 of the thermal management system 100 of the embodiment of the present invention is: The valve ports "a" and "d" of the first control valve 81 are connected, the valve ports "e" and "i" are connected, the valve ports "h" and "c" are connected, the valve ports "j" and "k" of the second control valve 82 are connected, the radiator circuit 40 is connected in series with the high-pressure heat exchange circuit 20, and is connected with the heat exchanger circuit 50 through the first control valve 81, the battery pack 32 is connected with the condenser 61 through the second branch 72, and the heat of the radiator circuit 40 and the high-pressure heat exchange circuit 20 is used to heat the passenger compartment or the battery.

[0071] Coolant flow direction: heat exchanger 51 → first control valve 81 → radiator 41 → first water pump 23 → motor controller 22 → motor 21 → first control valve 81 → heat exchanger 51; Condenser 61 → electric heater 62 → warm air core 63 → third water pump 64 → condenser 61; Condenser 61 → electric heater 62 → first control valve 81 → second water pump 31 → battery pack 32 → second control valve 82 → condenser 61; Refrigerant flow direction: compressor 11 → condenser 61 → heat exchanger 51 → compressor 11; The compressor 11 compresses the refrigerant into a high-temperature and high-pressure gas, which releases heat at the condenser 61 to become a low-temperature refrigerant. The temperature of the coolant on the coolant side increases, and a part of it can flow to the heater core 63, release heat to the environment, and blow into the passenger compartment through the heater core 63. The other part exchanges heat with the battery pack 32 through the third branch 73 and the first control valve 81 to heat the battery. Among them, the refrigerant needs to absorb heat and return to the compressor 11 to maintain the circulation of the air-conditioning system 10. The coolant carries the heat of the radiator circuit 40 and the high-pressure heat exchange circuit 20, and exchanges heat with the air-conditioning system 10 at the heat exchanger 51, so that the refrigerant can absorb heat at the heat exchanger 51 and become a gas to maintain the system circulation.

[0072] The "g" valve port and the "f" valve port of the first control valve 81 are connected, the "h" valve port and the "c" valve port are connected, and the battery heat exchange circuit 30 and the circulation circuit 70 are connected, thereby achieving the function of equalizing the temperature of the battery pack 32.

[0073] The coolant flows from: battery pack 32 → first control valve 81 → check valve 74 → first control valve 81 → second water pump 31 → battery pack 32 .

[0074] The coolant circulates in the battery pack 32 and the circulation loop 70 to maintain temperature uniformity between the cells or modules of the battery pack 32, thereby avoiding problems such as performance degradation, safety hazards, and shortened life due to excessive temperature differences.

[0075] Reference Figure 5 As shown, the fourth working mode of the thermal management system 100 of the embodiment of the present invention is: The valve ports "a" and "d" of the first control valve 81 are connected, the valve ports "b" and "e" are connected, the valve ports "h" and "c" are connected, the valve ports "j" and "k" of the second control valve 82 are connected, the high-pressure heat exchange circuit 20 is connected to the heat exchanger circuit 50 through the first control valve 81, and the battery pack 32 is connected to the condenser 61 through the second branch 72, and the heat of the high-pressure heat exchange circuit 20 is used to heat the passenger compartment or the battery.

[0076] Coolant flow direction: heat exchanger 51 → first control valve 81 → first water pump 23 → motor controller 22 → motor 21 → first control valve 81 → heat exchanger 51; Condenser 61 → electric heater 62 → warm air core 63 → third water pump 64 → condenser 61; Condenser 61 → electric heater 62 → first control valve 81 → second water pump 31 → battery pack 32 → second control valve 82 → condenser 61; Refrigerant flow direction: compressor 11 → condenser 61 → heat exchanger 51 → compressor 11; The compressor 11 compresses the refrigerant into a high-temperature and high-pressure gas, which releases heat at the condenser 61 to become a low-temperature refrigerant. The coolant temperature on the coolant side increases, and a part of it can flow to the heater core 63, release heat to the environment, and blow into the passenger compartment through the heater core 63. The other part exchanges heat with the battery pack 32 through the third branch 73 and the first control valve 81 to heat the battery. Among them, the refrigerant needs to absorb heat and return to the compressor 11 to maintain the circulation of the air-conditioning system 10. The coolant carries the heat of the high-pressure heat exchange circuit 20 and exchanges heat with the air-conditioning system 10 at the heat exchanger 51, so that the refrigerant can absorb heat at the heat exchanger 51 and become a gas to maintain the system circulation.

[0077] The "g" valve port and the "f" valve port of the first control valve 81 are connected, the "h" valve port and the "c" valve port are connected, and the battery heat exchange circuit 30 and the circulation circuit 70 are connected, thereby achieving the function of equalizing the temperature of the battery pack 32.

[0078] The coolant flows from: battery pack 32 → first control valve 81 → check valve 74 → first control valve 81 → second water pump 31 → battery pack 32 .

[0079] The coolant circulates in the battery pack 32 and the circulation loop 70 to maintain temperature uniformity between the cells or modules of the battery pack 32, thereby avoiding problems such as performance degradation, safety hazards, and shortened life due to excessive temperature differences.

[0080] Reference Figure 6 As shown, the fifth working mode of the thermal management system 100 of the embodiment of the present invention is: The valve port "g" and the valve port "c" of the first control valve 81 are connected, and the battery heat exchange circuit 30 and the second branch 72 and the first branch 71 are connected, so that the battery pack 32 can achieve the function of equalizing the temperature.

[0081] The coolant flows from: battery pack 32 → first control valve 81 → second water pump 31 → battery pack 32 .

[0082] The coolant circulates in the battery pack 32 and the circulation loop 70 to maintain temperature uniformity between the cells or modules of the battery pack 32, thereby avoiding problems such as performance degradation, safety hazards, and shortened life due to excessive temperature differences.

[0083] The valve ports "a" and "f" of the first control valve 81 are connected, the valve ports "b" and "h" are connected, and the battery heat exchange circuit 30 and the third branch 73 are connected, thereby realizing the function of electric drive heat storage.

[0084] The coolant flows in the following directions: first water pump 23 →motor controller 22 →motor 21 →first control valve 81 →check valve 74 →first control valve 81 →first water pump 23 .

[0085] The coolant circulates in the high-pressure heat exchange loop 20 and the third branch 73, and utilizes the heat generated during the operation of the motor 21, the motor controller 22 and other components to collect and store the heat through the coolant. In cold weather, the stored heat is transferred to the electric drive system to achieve preheating, thereby improving energy efficiency and enhancing the performance of the entire vehicle.

[0086] Reference Figure 7 As shown, the sixth working mode of the thermal management system 100 of the embodiment of the present invention is: The "g" valve port and the "f" valve port of the first control valve 81 are connected, the "h" valve port and the "b" valve port are connected, and the "a" valve port and the "c" valve port are connected. The battery heat exchange circuit 30, the high-pressure heat exchange circuit 20 and the circulation circuit 70 are connected through the first control valve 81, realizing the function of active heat generation / waste heat heating of the battery by electric drive.

[0087] Coolant flows from: battery pack 32 → first control valve 81 → one-way valve 74 → first control valve 81 → first water pump 23 → motor controller 22 → motor 21 → first control valve 81 → second water pump 31 → battery pack 32 .

[0088] The coolant passes through the high-pressure heat exchange circuit 20 to transfer the operating heat or waste heat of the motor controller 22 and the motor 21 to the battery pack 32 , thereby heating the battery pack 32 .

[0089] The "h" valve port and the "b" valve port of the first control valve 81 are connected, the "a" valve port and the "c" valve port are connected, the "j" valve port and the "k" valve port of the second control valve 82 are connected, the high-pressure heat exchange circuit 20 is connected to the battery heat exchange circuit 30 through the first control valve 81, and the battery heat exchange circuit 30 is connected to the condenser 61 through the second branch 72, thereby realizing the function of electric drive preheating.

[0090] Coolant flows from: battery pack 32 → second control valve 82 → third water pump 64 → condenser 61 → electric heater 62 → first control valve 81 → first water pump 23 → motor controller 22 → motor 21 → first control valve 81 → second water pump 31 → battery pack 32 .

[0091] Refrigerant flow: compressor 11 → condenser 61 → heat exchanger 51 → compressor 11; In low temperature environments, the lubricating oil, thermal conductive materials, etc. of the electric drive system will become viscous, reducing operating efficiency. Preheating can reduce starting resistance and improve efficiency. Preheating can also prevent mechanical damage or insulation failure caused by cold start. The electric drive system can quickly reach the designed operating conditions, provide better power performance, and extend system life.

[0092] The compressor 11 compresses the refrigerant into a high-temperature and high-pressure gas, which releases heat at the condenser 61 to become a low-temperature refrigerant. The coolant temperature on the coolant side increases, and the heat is transferred to the high-pressure heat exchange circuit 20 through the third branch 73 and the first control valve 81, thereby transferring heat to the electric drive system through the circulating coolant.

[0093] A vehicle according to an embodiment of the second aspect of the present invention includes a thermal management system 100 .

[0094] 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 limiting the present invention.

[0095] 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 present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0096] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art 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: An air conditioning system (10), the air conditioning system (10) comprising a condenser (61); a first control valve (81), the first control valve (81) being connected to a high-pressure heat exchange circuit (20), a battery heat exchange circuit (30), a radiator circuit (40), a heat exchange circuit (50), a heating circuit (60), and a circulation circuit (70); the first control valve (81) selectively connects one or more of the high-pressure heat exchange circuit (20), the battery heat exchange circuit (30), the radiator circuit (40), the heat exchange circuit (50), the heating circuit (60), and the circulation circuit (70); the air conditioning system (10) exchanges heat with the heat exchange circuit (50) and the heating circuit (60); and the heating circuit (60) is connected to the condenser (61); a second control valve (82), one end of the second control valve (82) being in communication with the circulation circuit (70) and the battery heat exchange circuit (30), another end of the second control valve (82) being in communication with the radiator circuit (40), and another end of the second control valve (82) being in communication with the condenser (61).

2. The thermal management system according to claim 1, characterized in that: The circulation loop (70) comprises: a first branch (71), one end of the first branch (71) being in communication with the first control valve (81); and The thermal management system further comprises: a second branch (72), one end of the second branch (72) being in communication with the battery heat exchange circuit (30), and the other end of the first branch (71) and the other end of the second branch (72) being in communication with the second control valve (82).

3. The thermal management system according to claim 2, characterized in that: The circulation circuit (70) comprises: a third branch (73), one end of the third branch (73) being in communication with the first control valve (81), and the other end of the third branch (73) being in communication with the first control valve (81) and the heating circuit (60).

4. The thermal management system according to claim 1, characterized in that: The heat exchanger circuit (50) comprises: a heat exchanger (51); both ends of the heat exchanger circuit (50) are respectively connected to the first control valve (81); and the air conditioning system (10) is connected to the heat exchanger (51).

5. The thermal management system according to claim 1, characterized in that: The heating circuit (60) comprises: an electric heater (62) and a warm air core (63); the electric heater (62) and the warm air core (63) are connected in series; one end of the condenser (61) is connected to the second control valve (82) and one end of the warm air core (63); and the other end of the condenser (61) is connected to the other end of the warm air core (63) and the first control valve (81).

6. The thermal management system according to claim 1, characterized in that: The air conditioning system (10) comprises: a compressor (11) and an evaporator (12), wherein the compressor (11), the evaporator (12) and the condenser (61) are connected in series; The heat exchanger circuit (50) comprises: a heat exchanger (51), wherein the heat exchanger (51) and the evaporator (12) are connected in parallel with each other and are connected in series with the condenser (61).

7. The thermal management system according to claim 1, characterized in that: The radiator circuit (40) comprises: a radiator (41), one end of the radiator (41) being in communication with the first control valve (81); and The high-pressure heat exchange circuit (20) comprises: a motor (21), a motor controller (22) and a first water pump (23), wherein the motor (21), the motor controller (22) and the first water pump (23) are connected in series; and The thermal management system further comprises: a fourth branch (83), one end of the fourth branch (83) being in communication with the first control valve (81), and the first water pump (23) being in communication with the other end of the fourth branch (83).

8. The thermal management system according to claim 1, characterized in that: The heat exchanger circuit (50) comprises: a heat exchanger (51), one end of the heat exchanger (51) being in communication with the first control valve (81); and The battery heat exchange circuit (30) comprises: a second water pump (31) and a battery pack (32), the second water pump (31) and the battery pack (32) being connected in series with each other, one end of the second water pump (31) being in communication with the first control valve (81); and, The thermal management system further comprises: a fifth branch (84), one end of the fifth branch (84) being in communication with the first control valve (81), and the battery pack (32) and the heat exchanger (51) being connected in parallel with each other and in communication with the other end of the fifth branch (84).

9. The thermal management system according to claim 1, characterized in that: Also includes: An overflow tank (85) and a four-way pipe (86), wherein the four-way pipe (86) is respectively connected to the radiator circuit (40), the first control valve (81), the high-pressure heat exchange circuit (20) and the overflow tank (85).

10. A vehicle, characterized in that: include: The thermal management system (100) according to any one of claims 1 to 9.

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