Thermal management system and vehicle

Abstract

The application discloses a kind of thermal management system and vehicle, thermal management system includes: air conditioning system, air conditioning system includes condenser;First control valve, high-pressure heat exchange circuit, battery heat exchange circuit, radiator circuit, heat exchanger circuit, heating circuit and circulation loop are communicated on the first control valve, the first control valve selectively communicates one or more of high-pressure heat exchange circuit, battery heat exchange circuit, radiator circuit, heat exchanger circuit, heating circuit and circulation loop, air conditioning system and heat exchanger circuit and heating circuit heat exchange, heating circuit and condenser are communicated;Second control valve, one end of the second control valve and circulation loop and battery heat exchange circuit are communicated, and the other end of the second control valve and radiator circuit are communicated, and the other end of the second control valve and condenser are communicated.Cooling liquid flow direction can be controlled by the first control valve and the second control valve, can reduce flow resistance under each working mode, improve energy utilization, 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] Simply put, a pure electric thermal management architecture is a heat control system within an electric vehicle. It involves multiple subsystems, including battery thermal management, drive motor cooling, air conditioning, and passenger compartment temperature control. In pure electric vehicles, because the battery generates significant heat during operation, and battery performance and lifespan are closely linked 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 evolved from the original three-way valve + four-way valve form to a five-way valve, then to an eight-way valve, and finally to a nine-way valve form. 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 address at least one of the technical problems existing in the prior art. To this end, the present invention proposes a thermal management system that controls the flow of coolant via a first control valve and a second control valve. This reduces flow resistance in various operating modes, improves energy utilization, and is suitable for platform-based development.

[0005] A thermal management system according to an embodiment of a first aspect of the present invention includes: an air conditioning system including a condenser; a first control valve, wherein the first control valve is connected to a high-pressure heat exchange circuit, a battery heat exchange circuit, a radiator circuit, a heat exchanger circuit, a heating circuit, and a circulation circuit, and 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 exchanger circuit, the heating circuit, and the circulation circuit, wherein the air conditioning system exchanges heat with the heat exchanger circuit and the heating circuit, and the heating circuit is connected to the condenser; and a second control valve, wherein 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 an 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 coolant flowing through components that do not require temperature regulation. This can reduce the flow resistance in each operating 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 circuit includes: a heat exchanger, both ends of the heat exchanger circuit 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 warm air core, the electric heater and the warm air core are connected in series, one end of the condenser is connected to the second control valve and one end of the warm air core, and the other end of the condenser is connected to the other end of the warm air 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, and the compressor, the evaporator and the condenser are connected in series; the heat exchanger circuit includes: a heat exchanger, and 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 application, the heat management system further comprises a water overflow tank and a four-way pipe, which is respectively communicated with the radiator circuit, the first control valve, the high-pressure heat exchange circuit and the water overflow tank.

[0015] According to the vehicle of the second aspect of the embodiments of the present application, the heat management system is included.

[0016] The heat management system of the embodiments of the present application has the advantages that: the flow direction of the coolant is controlled by the first control valve and the second control valve, the situation that the coolant flows through the components which do not need to be temperature-regulated is reduced, the flow resistance in each working mode is reduced, the energy utilization rate is improved, the heat management strategy is simplified, and the platform development is suitable.

[0017] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, taken in conjunction with the accompanying drawings, in which:

[0019] Figure 1 is a schematic diagram of a heat management system according to an embodiment of the present application;

[0020] Figure 2 is a schematic diagram of a heat management system in working mode one according to an embodiment of the present application;

[0021] Figure 3 is a schematic diagram of a heat management system in working mode two according to an embodiment of the present application;

[0022] Figure 4 is a schematic diagram of a heat management system in working mode three according to an embodiment of the present application;

[0023] Figure 5 is a schematic diagram of a heat management system in working mode four according to an embodiment of the present application;

[0024] Figure 6 is a schematic diagram of a heat management system in working mode five according to an embodiment of the present application;

[0025] Figure 7 is a schematic diagram of a heat management system in working mode six according to an embodiment of the present application.

[0026] REFERENCE NUMERALS:

[0027] 100, heat management system;

[0028] 10, air conditioning system; 11, compressor; 12, evaporator;

[0029] 20. High-pressure heat exchange circuit; 21. Motor; 22. Motor controller; 23. First water pump;

[0030] 30. Battery heat exchange circuit; 31. Second water pump; 32. Battery pack;

[0031] 40. Radiator circuit; 41. Radiator;

[0032] 50. Heat exchanger circuit; 51. Heat exchanger;

[0033] 60. Heating circuit; 61. Condenser; 62. Electric heater; 63. Warm air core; 64. Third water pump;

[0034] 70. Circulation loop; 71. First branch; 72. Second branch; 73. Third branch; 74. One-way valve;

[0035] 81. First control valve; 82. Second control valve; 83. Fourth branch; 84. Fifth branch; 85. Overflow tank; 86. Cross-way pipe. DETAILED DESCRIPTION

[0036] The embodiments of the present invention will be described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention will be described in detail below.

[0037] 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.

[0038] 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 .

[0039] The air conditioning system 10 includes a condenser 61 .

[0040] 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.

[0041] 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 circulate with each other through the first control valve 81. Under the control of the vehicle controller, the heat circulates between different circuits or devices according to the vehicle's thermal management mode. Different working modes can be flexibly selected in different vehicle usage scenarios to avoid frequent use of the same heat source and improve the system's thermal management efficiency.

[0042] The thermal management system 100 uses the first control valve 81 to control multiple circuits. Each circuit does not interfere with each other, yet heat can be exchanged with each other through the first control valve 81. This prevents heat from flowing through components that do not require temperature regulation in a certain operating mode, reducing heat loss, lowering flow resistance in various modes, and improving energy utilization. It also saves space in the vehicle interior and opens up more possibilities for the subsequent integration of new functions and technologies.

[0043] Specifically, the first control valve 81 can be a nine-way valve, with refrigerant flowing in the air-conditioning system 10, and coolant flowing in 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. Furthermore, 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 .

[0044] 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 the eleventh valve port. Figure 1 The "k" in the figure is the twelfth valve port. Figure 1 The "l" in .

[0045] By controlling the opening and closing of the valve ports of the first control valve 81 and the second control valve 82, the flow direction of the coolant can be controlled, and the proportion of the coolant in different working modes can be adjusted. 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 utilized, or only the heat in the high-pressure heat exchange circuit 20 can be utilized, thereby simplifying the heating strategy under the dual heating conditions of the passenger compartment and the battery pack 32.

[0046] Specifically, referring to the third working mode 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 realize the function of heating the passenger compartment or the battery, or referring to the fourth working mode described below, the coolant absorbs the heat in the high-pressure heat exchange circuit 20 to realize the function of heating the passenger compartment or the battery pack 32.

[0047] In addition, the full-function development of the component thermal management is realized through the first control valve 81 and the second control valve 82, the development difficulty of the valve body is reduced, the flow channel plate and the integrated module are combined for use, the development cost is further reduced, and the platform development of the pure electric vehicle of the host manufacturer is supported.

[0048] Therefore, by controlling the flow direction of the coolant through the first control valve 81 and the second control valve 82, the situation that the coolant flows through the components that do not need to be temperature-regulated is reduced, the flow resistance in each working mode can be reduced, the energy utilization rate is improved, the thermal management strategy is simplified, and the platform development is suitable.

[0049] The circulation loop 70 includes a first branch 71 and a second branch 72, one end of the first branch 71 is communicated with the first control valve 81, one end of the second branch 72 is communicated 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 are communicated with the second control valve 82. Specifically, one end of the second branch 72 is unidirectionally communicated with the battery heat exchange circuit 30, the coolant can flow from the battery heat exchange circuit 30 to the second branch 72, the first branch 71 is bidirectionally communicated, one end of the first branch 71 is communicated with the “g” valve port of the first control valve 81, the other end of the first branch 71 is communicated with 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 circuit 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.

[0050] The circulation loop 70 includes a third branch 73, one end of the third branch 73 is communicated with the first control valve 81, and the other end of the third branch 73 is communicated with the first control valve 81 and the heating circuit 60. Specifically, one end of the third branch 73 is communicated with the “f” valve port of the first control valve 81, when the “f” valve port and the “g” valve port of the first control valve 81 are communicated, the first branch 71 and the third branch 73 are communicated, the other end of the third branch 73 is provided with a one-way valve 74 and a three-way valve, the other end of the third branch 73 is communicated with the “h” valve port of the first control valve 81 or the heating circuit 60, by providing the one-way valve 74, the coolant flowing out of the heating circuit 60 is prevented from flowing back to the “f” valve port of the first control valve 81, and the stability of the thermal management system 100 is improved.

[0051] The heat exchanger circuit 50 includes a heat exchanger 51. Both ends of the heat exchanger circuit 50 are connected to the first control valve 81, and the air conditioning system 10 is connected to the heat exchanger 51. Specifically, the two ends of the heat exchanger circuit 50 are connected to the valve port "d" and the valve port "e" of the first control valve 81, thereby achieving communication between the heat exchanger circuit 50 and other circuits, and the air conditioning system 10 is connected to the heat exchanger 51. In this way, the heat exchanger 51 exchanges heat with the air conditioning system 10 and can transfer heat to other circuits.

[0052] 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, while 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 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 in the heater core 63, thereby heating the passenger compartment. It can also flow to other circuits through the first control valve 81.

[0053] 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, which is used to drive 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.

[0054] Air conditioning system 10 includes a compressor 11 and an evaporator 12. Compressor 11, evaporator 12, and condenser 61 are connected in series. Heat exchanger 51 and evaporator 12 are connected in parallel and in series with condenser 61. Refrigerant in compressor 11 releases heat at condenser 61 and, depending on the operating mode, flows to heat exchanger 51 to exchange heat with the coolant, or to evaporator 12 to evaporate and absorb heat, thereby cooling the passenger compartment.

[0055] The radiator circuit 40 includes a radiator 41, one end of which 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. Coolant flows in a one-way manner through the radiator circuit 40, flowing from the "i" valve port through the radiator 41 to dissipate heat. The cooled coolant then flows out of the radiator circuit 40.

[0056] The high-pressure heat exchange circuit 20 includes a motor 21, a motor controller 22, and a first water pump 23. The motor 21, motor controller 22, and first water pump 23 are connected in series. The motor 21 and motor controller 22 generate heat during operation. The coolant, after exchanging heat with the motor 21 and motor controller 22, increases in temperature and transfers the heat, enabling the motor 21 and motor controller 22 to cool or heat other components.

[0057] The opening or closing or opening degree of the first water pump 23 can be adjusted according to demand.

[0058] 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 operating modes, Figure 2-Figure 4 As shown, the radiator 41 and the first water pump 23 are connected in series. In some working modes, 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.

[0059] 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 .

[0060] Furthermore, 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 valve port "c" of the first control valve 81.

[0061] Furthermore, the thermal management system 100 further includes a fifth branch 84 , one end of which is connected to the first control valve 81 . The battery pack 32 and the heat exchanger 51 are connected in parallel and are 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 operating modes, the battery pack 32 and the heat exchanger 51 are connected in series, allowing heat from the battery pack 32 to be transferred to the heat exchanger 51 for heat exchange with the air conditioning system 10 . In other operating 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 , transferring heat from the battery pack 32 through the first control valve 81 .

[0062] Thermal management system 100 also includes an overflow tank 85 and a cross-section pipe 86. Cross-section pipe 86 is connected to radiator circuit 40, first control valve 81, high-pressure heat exchange circuit 20, and overflow tank 85, respectively. Overflow tank 85 is used to maintain pressure balance on the coolant side. Through cross-section pipe 86, overflow tank 85 is connected to radiator circuit 40, first control valve 81, high-pressure heat exchange circuit 20, and overflow tank 85. In various operating modes, overflow tank 85 can be connected to the coolant circuit to maintain pressure balance on the coolant side.

[0063] Refer to the following Figure 2-Figure 7 The operating mode of the thermal management system 100 according to the embodiment of the present invention is described.

[0064] Reference Figure 2 As shown, the working mode 1 of the thermal management system 100 according to the embodiment of the present invention is:

[0065] The "a" valve port and the "f" valve port of the first control valve 81 are connected, 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 third branch 73 through the first control valve 81, thereby realizing the cooling function of the high-pressure components.

[0066] The coolant flows from: radiator 41 → first water pump 23 → motor controller 22 → motor 21 → first control valve 81 → one-way valve 74 → first control valve 81 → radiator 41 .

[0067] 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 to cool down and continues to circulate.

[0068] The valve ports "c" and "e" of the first control valve 81 are connected, the battery heat exchange circuit 30 is connected in series with the heat exchanger circuit 50, and heat is exchanged with the air-conditioning system 10 through the heat exchanger 51 to realize the active cooling function of the battery pack 32.

[0069] Coolant flow direction: second water pump 31 → battery pack 32 → heat exchanger 51 → first control valve 81 → second water pump 31;

[0070] Refrigerant flow direction: compressor 11 → condenser 61 → heat exchanger 51 → compressor 11 .

[0071] Driven by the second water pump 31 , the coolant exchanges heat with the battery pack 32 , the temperature of the battery pack 32 drops, 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 .

[0072] The compressor 11 compresses the refrigerant into a high-temperature, high-pressure gas, which releases heat at the condenser 61 to become a low-temperature refrigerant, and absorbs heat from the coolant side at the heat exchanger 51 to become a gas, and finally flows into the compressor 11.

[0073] 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 be used in conjunction with the evaporator 12 to achieve passenger compartment cooling or other purposes. There is no restriction here. The same applies to other working modes below.

[0074] The "a" valve port and the "f" valve port of the first control valve 81 are connected, the "h" valve port and the "i" valve port are connected, the "c" valve port and the "e" valve port are connected, and the "k" valve port and the "l" valve port of the second control valve 82 are connected, which can realize parallel cooling of the condenser 61 and the high-pressure heat exchange circuit 20.

[0075] Coolant flow direction: radiator 41 → first water pump 23 → motor controller 22 → motor 21 → first control valve 81 → one-way valve 74 → first control valve 81 → radiator 41;

[0076] 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;

[0077] Refrigerant flow direction: compressor 11 → condenser 61 → heat exchanger 51 → compressor 11 .

[0078] The coolant dissipates heat at the radiator 41 and becomes low-temperature coolant. A portion 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 to cool down. The other portion of the coolant exchanges heat with the condenser 61, and the refrigerant of the air-conditioning system 10 is cooled. The high-temperature coolant returns to the radiator 41 to dissipate heat.

[0079] The compressor 11 compresses the refrigerant into a high-temperature, high-pressure gas, which releases heat at the condenser 61 to become a low-temperature refrigerant, and absorbs heat from the coolant side at the heat exchanger 51 to become a gas, and finally flows into the compressor 11.

[0080] 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.

[0081] In addition, the low-temperature and high-pressure refrigerant after releasing heat at the condenser 61 can also be converted into low-temperature and low-pressure refrigerant through the stop valve, without passing through the heat exchanger 51, and directly return to the compressor 11 through the gas-liquid separator, forming a hot gas bypass circuit. The air-conditioning system 10 in other working modes below can all form a hot gas bypass circuit.

[0082] Reference Figure 3 As shown, the second working mode of the thermal management system 100 according to the embodiment of the present invention is:

[0083] 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.

[0084] 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 → one-way valve 74 → first control valve 81 → radiator 41 .

[0085] 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 temperature of the motor controller 22, the motor 21 and the battery decreases. The high-temperature coolant passes through the first control valve 81 and the third branch 73 and returns to the radiator 41 to cool down and continues to circulate.

[0086] 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.

[0087] 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 → one-way valve 74 → first control valve 81 → radiator 41;

[0088] 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 .

[0089] Refrigerant flow: compressor 11 → condenser 61 → heat exchanger 51 → compressor 11;

[0090] Compressor 11 →condenser 61 →evaporator 12 →compressor 11 .

[0091] The coolant dissipates heat at the radiator 41 and becomes low-temperature coolant. A portion 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 decrease. The high-temperature coolant passes through the third branch 73 and returns to the radiator 41 to cool down. Another portion of the coolant exchanges heat with the condenser 61, and the refrigerant of the air-conditioning system 10 is cooled. The high-temperature coolant returns to the radiator 41 to dissipate heat.

[0092] The compressor 11 compresses the refrigerant into a high-temperature, high-pressure gas, which releases heat at the condenser 61 and becomes a low-temperature refrigerant. It can absorb heat from the coolant side at the heat exchanger 51 and 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.

[0093] Reference Figure 4 As shown, the working mode 3 of the thermal management system 100 according to the embodiment of the present invention is:

[0094] The "a" valve port and the "d" valve port of the first control valve 81 are connected, the "e" valve port and the "i" valve port are connected, the "h" valve port and the "c" valve port are connected, and the "j" valve port and the "k" valve port 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.

[0095] 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;

[0096] Condenser 61 → electric heater 62 → warm air core 63 → third water pump 64 → condenser 61;

[0097] Condenser 61 → electric heater 62 → first control valve 81 → second water pump 31 → battery pack 32 → second control valve 82 → condenser 61;

[0098] Refrigerant flow: compressor 11 → condenser 61 → heat exchanger 51 → compressor 11;

[0099] Compressor 11 compresses the refrigerant into a high-temperature, high-pressure gas. This heat is released at condenser 61, transforming it into a low-temperature refrigerant. The coolant on the coolant side heats up, and a portion of it flows to heater core 63, releasing heat to the environment and then being blown into the passenger compartment through heater core 63. The remaining portion exchanges heat with battery pack 32 through third branch 73 and first control valve 81, heating the battery. The refrigerant must absorb heat and return to compressor 11 to maintain the circulation of air conditioning system 10. The coolant carries heat from radiator circuit 40 and high-pressure heat exchange circuit 20, exchanging heat with air conditioning system 10 at heat exchanger 51, allowing the refrigerant to absorb heat there and transform into a gas, maintaining the system's circulation.

[0100] 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.

[0101] Coolant flow direction: battery pack 32 → first control valve 81 → one-way valve 74 → first control valve 81 → second water pump 31 → battery pack 32 .

[0102] 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 large temperature differences.

[0103] Reference Figure 5 As shown, the fourth working mode of the thermal management system 100 according to the embodiment of the present invention is:

[0104] The "a" valve port and the "d" valve port of the first control valve 81 are connected, the "b" valve port and the "e" valve port are connected, the "h" valve port and the "c" valve port are connected, and 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 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. The heat of the high-pressure heat exchange circuit 20 is used to heat the passenger compartment or the battery.

[0105] 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;

[0106] Condenser 61 → electric heater 62 → warm air core 63 → third water pump 64 → condenser 61;

[0107] Condenser 61 → electric heater 62 → first control valve 81 → second water pump 31 → battery pack 32 → second control valve 82 → condenser 61;

[0108] Refrigerant flow: compressor 11 → condenser 61 → heat exchanger 51 → compressor 11;

[0109] Compressor 11 compresses the refrigerant into a high-temperature, high-pressure gas. This heat is released at condenser 61, transforming it into a low-temperature refrigerant. The coolant on the coolant side heats up, and a portion of it flows to heater core 63, releasing heat to the environment and then being blown into the passenger compartment through heater core 63. The remaining portion exchanges heat with battery pack 32 through third branch 73 and first control valve 81, heating the batteries. The refrigerant must absorb heat and return to compressor 11 to maintain the circulation of air conditioning system 10. By carrying heat from high-pressure heat exchange circuit 20 through the coolant and exchanging heat with air conditioning system 10 at heat exchanger 51, the refrigerant absorbs heat there and transforms into a gas, maintaining the system's circulation.

[0110] 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.

[0111] Coolant flow direction: battery pack 32 → first control valve 81 → one-way valve 74 → first control valve 81 → second water pump 31 → battery pack 32 .

[0112] 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 large temperature differences.

[0113] Reference Figure 6 As shown, the fifth working mode of the thermal management system 100 according to the embodiment of the present invention is:

[0114] 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, thereby achieving the function of equalizing the temperature of the battery pack 32.

[0115] Coolant flow direction: battery pack 32 → first control valve 81 → second water pump 31 → battery pack 32 .

[0116] 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 large temperature differences.

[0117] 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.

[0118] The coolant flows from: first water pump 23 → motor controller 22 → motor 21 → first control valve 81 → one-way valve 74 → first control valve 81 → first water pump 23 .

[0119] The coolant circulates in the high-pressure heat exchange circuit 20 and the third branch 73, utilizing the heat generated during the operation of components such as the motor 21 and the motor controller 22 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.

[0120] Reference Figure 7 As shown, the sixth working mode of the thermal management system 100 according to the embodiment of the present invention is:

[0121] 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 the electric drive.

[0122] Coolant flow direction: 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 .

[0123] The coolant passes through the high-pressure heat exchange circuit 20 and transfers 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 .

[0124] 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, realizing the function of electric drive preheating.

[0125] Coolant flow direction: 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.

[0126] Refrigerant flow: compressor 11 → condenser 61 → heat exchanger 51 → compressor 11;

[0127] 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.

[0128] The compressor 11 compresses the refrigerant into a high-temperature, high-pressure gas, which releases heat at the condenser 61 and becomes 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, and heat is transferred to the electric drive system through the circulating coolant.

[0129] A vehicle according to an embodiment of the second aspect of the present invention includes a thermal management system 100 .

[0130] 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 to 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, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0131] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0132] While 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 invention, and that the scope of the 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), wherein the first control valve (81) is 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); The circulation circuit (70) includes: a first branch (71), a second branch (72) and a third branch (73); 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 circuit (30); 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); 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 circuit (60); The heating circuit (60) comprises: an electric heater (62) and a warm air core (63), wherein the electric heater (62) and the warm air core (63) are connected in series; 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; The battery heat exchange circuit (30) comprises: a second water pump (31) and a battery pack (32), wherein the second water pump (31) and the battery pack (32) are connected in series, and one end of the second water pump (31) is in communication with the first control valve (81); and The heating circuit (60) further includes a third water pump (64), one end of which is connected to the second control valve (82) and the heater core (63), and the other end of which is connected to the condenser (61), for driving the coolant to circulate in the heating circuit (60).

2. 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).

3. The thermal management system according to claim 1, characterized in that One end of the condenser (61) is in communication with the second control valve (82) and one end of the heater core (63), and the other end of the condenser (61) is in communication with the other end of the heater core (63) and the first control valve (81).

4. The thermal management system according to claim 1, wherein: 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).

5. The thermal management system according to claim 1, wherein: The radiator circuit (40) comprises: a radiator (41), one end of the radiator (41) being in communication with the first control valve (81); 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).

6. The thermal management system according to claim 1, wherein: 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 thermal management system further includes: 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 to each other and in communication with the other end of the fifth branch (84).

7. The thermal management system according to claim 1, wherein: 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).

8. A vehicle, characterized in that: include: The thermal management system (100) according to any one of claims 1 to 7.

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