Thermal management system and vehicle

Abstract

The utility model discloses a thermal management system and a vehicle. The thermal management system comprises an air-conditioning system and a thermal management system, the 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; one valve port of the second control valve is communicated with the circulation loop, another valve port of the second control valve is communicated with the radiator loop, and another valve port of the second control valve is communicated with the heating loop; one end of the heating loop communicates with the second control valve, and the other end of the heating loop communicates with the radiator loop and the first control valve. A first control valve and a second control valve are arranged, heat management subsystems are coupled, the energy utilization rate is increased, and platform development is achieved.

Description

Technical Field

[0001] This utility model relates to the field of vehicle thermal management technology, and in particular to a thermal management system and a vehicle. Background Technology

[0002] In simple terms, the pure electric vehicle thermal management architecture is the control system for the internal heat of an electric vehicle. It involves multiple subsystems, including battery thermal management, drive motor cooling, air conditioning, and passenger compartment temperature regulation. In pure electric vehicles, the battery generates a large amount of heat during operation, and the battery's performance and lifespan are closely related to temperature. Therefore, 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 to the five-way valve, then to the eight-way valve and 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. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a thermal management system that couples the various subsystems of thermal management by setting a first control valve and a second control valve, thereby improving energy utilization, maximizing the versatility of components, and realizing platform-based development.

[0005] A thermal management system according to a first aspect of the present invention includes: an air conditioning system; a first control valve, which 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, wherein the first control valve selectively connects to 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, and the air conditioning system exchanges heat with the heat exchanger circuit and the heating circuit; a second control valve, one port of the second control valve is connected to the circulation circuit, another port of the second control valve is connected to the radiator circuit, and yet another port of the second control valve is connected to the heating circuit; wherein one end of the heating circuit is connected to the second control valve, and the other end of the heating circuit is connected to the radiator circuit and the first control valve.

[0006] According to the thermal management system of this utility model embodiment, by setting a first control valve and a second control valve, the various subsystems of thermal management are coupled, thereby improving energy utilization, maximizing the versatility of components, and realizing platform-based development.

[0007] According to some embodiments of the present invention, it further includes: a first branch, one end of the first branch being connected to the other end of the heating circuit and one valve port of the first control valve, the other end of the first branch being connected to the radiator circuit and another valve port of the first control valve, and a shut-off valve being provided on the first branch.

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

[0009] According to some embodiments of the present invention, the circulation loop includes a third branch and a fourth branch, one end of the third branch and one end of the fourth branch are respectively connected to different valve ports of the first control valve, and the other end of the third branch and the fourth branch are connected to one valve port of the second control valve.

[0010] According to some embodiments of the present invention, the heat exchanger circuit includes: a heat exchanger, the two ends of which are respectively connected to the first control valve, and the air conditioning system is connected to the heat exchanger.

[0011] According to some embodiments of the present invention, the heating circuit includes: a condenser, an electric heater, and a heating core. The electric heater and the heating core are connected in series. One end of the condenser is connected to the second control valve and one end of the heating core. The other end of the condenser is connected to the other end of the heating core and the first control valve.

[0012] 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, and the heat exchanger and the evaporator are connected in parallel and in series with the condenser.

[0013] 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, an electronic control unit, and a first water pump, wherein the motor, the electronic control unit, and the first water pump are connected in series; and the thermal management system further includes: a fifth branch, one end of which is connected to the first control valve, and the radiator and the first water pump 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 includes an overflow tank and a four-way pipe, wherein the four-way pipe is connected to the radiator circuit, the control valve, the high-pressure heat exchange circuit and the overflow tank respectively.

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

[0016] The beneficial effects of this utility model embodiment are as follows: by setting the first control valve and the second control valve, the thermal management subsystems are coupled, the energy utilization rate is improved, the components are maximized for versatility, and platform-based development is realized.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

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

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

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

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

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

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

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

[0026] Figure 8 This is a schematic diagram of the working mode seven of the thermal management system according to an embodiment of the present utility model.

[0027] Figure label:

[0028] 100. Thermal management system;

[0029] 10. Air conditioning system; 11. Compressor; 12. Evaporator;

[0030] 20. High-pressure heat exchange circuit; 21. Motor; 22. Motor controller; 23. First water pump;

[0031] 30. Battery heat exchange circuit; 31. Second water pump; 32. Battery pack;

[0032] 40. Radiator circuit; 41. Radiator;

[0033] 50. Heat exchanger circuit; 51. Heat exchanger;

[0034] 60. Heating circuit; 61. Condenser; 62. Electric heater; 63. Heater core; 64. Third water pump;

[0035] 70. Loop; 71. Second branch; 72. Third branch; 73. Fourth branch;

[0036] 81. First control valve; 82. Second control valve; 83. First branch; 84. Fifth branch; 85. Overflow tank; 86. Four-way pipe. Detailed Implementation

[0037] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0038] The following is for reference. Figures 1-8 The present invention describes a thermal management system 100 according to an embodiment of the present invention, and also proposes a vehicle.

[0039] Reference Figure 1 As shown, the thermal management system 100 of this utility model embodiment includes: an air conditioning system 10, a first control valve 81, and a second control valve 82.

[0040] 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 exchanger circuit 50, a heating circuit 60, and a circulation circuit 70. The first control valve 81 selectively connects to 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.

[0041] In this way, the heat in the high-pressure heat exchange circuit 20, battery heat exchange circuit 30, radiator circuit 40, heat exchanger circuit 50, heating circuit 60 and circulation circuit 70 can flow between each other through the first control valve 81. Under the control of the vehicle controller, the heat flows between different circuits or devices according to the vehicle's thermal management mode. Different working modes can be flexibly selected under different vehicle usage scenarios to avoid frequent use of the same heat source and improve system efficiency.

[0042] The thermal management system 100 uses a first control valve 81 to control multiple loops. Each loop operates independently but can exchange heat with others through the first control valve 81. This avoids situations where heat flows through components that do not require thermal management temperature regulation in a certain operating mode, reducing heat loss, lowering flow resistance in various modes, and improving energy utilization. Furthermore, it saves interior space in the vehicle, providing more possibilities for the integration of new functions and technologies in the future.

[0043] Specifically, the first control valve 81 can be a ten-way valve, through which coolant flows 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. 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, a ninth valve port, and a tenth valve port, respectively labeled "a", "b", "c", "d", "e", "f", "g", "h", "i", and "j" in the figure.

[0044] The air conditioning system 10 exchanges heat with the heat exchanger circuit 50 and the heating circuit 60. The refrigerant flows in the air conditioning system 10, and the heating circuit 60 is used for heating the passenger compartment. The heat exchange between the air conditioning system 10 and the heating circuit 60 can realize the heating function of the passenger compartment. The heat exchange between the air conditioning system 10 and the heat exchanger circuit 50 can be achieved through heat exchanger 51 and the coolant side.

[0045] One port of the second control valve 82 is connected to the circulation loop 70, another port of the second control valve 82 is connected to the radiator loop 40, and yet another port of the second control valve 82 is connected to the heating loop 60. Specifically, the second control valve 82 includes an eleventh port, a twelfth port, and a thirteenth port. The eleventh port is connected to the circulation loop 70, the twelfth port is connected to the radiator loop 40, and the thirteenth port is connected to the heating loop 60. The eleventh port is represented by "k" in the diagram, the twelfth port by "l", and the thirteenth port by "m".

[0046] 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, multiple circuits can be coupled, and energy utilization can be improved.

[0047] One end of the heating circuit 60 is connected to the second control valve 82, and the other end of the heating circuit 60 is connected to the radiator circuit 40 and the first control valve 81. One end of the heating circuit 60 is connected to the "m" valve port of the second control valve 82, and the other end is connected to the "i" valve port of the radiator circuit 40 and the first control valve 81.

[0048] Therefore, by setting the first control valve 81 and the second control valve 82, the various subsystems of thermal management are coupled, the energy utilization rate is improved, the components are maximized for commonality, and platform-based development is realized.

[0049] The thermal management system 100 also includes a first branch 83. One end of the first branch 83 is connected to the other end of the heating circuit 60 and one valve port of the first control valve 81. The other end of the first branch 83 is connected to the radiator circuit 40 and the other valve port of the first control valve 81. A shut-off valve is provided on the first branch 83. Specifically, one end of the first branch 83 is connected to the input end of the heating circuit 60 and the "i" valve port of the first control valve 81. Specifically, one end of the first branch 83 is connected to the input end of the heater core 63. The other end of the first branch 83 is connected to the radiator circuit 40 and the "j" valve port of the first control valve 81. The first branch 83 can connect the heating circuit 60, the radiator circuit 40, and the first control valve 81. The shut-off valve on the first branch 83 prevents coolant flowing from the first control valve 81 from flowing into the heating circuit 60, improving system stability.

[0050] The thermal management system 100 also includes a second branch 71, one end of which is connected to the first control valve 81, and the other end of which is connected to the first branch 83 and the other end of the heating circuit 60. Specifically, one end of the second branch 71 is connected to the "i" valve port of the first control valve 81, and the other end of the second branch 71 is connected to the input terminal of the first branch 83 and the heating circuit 60. The second branch 71 can connect the heating circuit 60 and the first control valve 81.

[0051] The circulation loop 70 includes a third branch 72 and a fourth branch 73. One end of the third branch 72 and one end of the fourth branch 73 are respectively connected to different valve ports of the first control valve 81, and the other ends of the third branch 72 and the fourth branch 73 are connected to one valve port of the second control valve 82. Specifically, one end of the third branch 72 is connected to the "h" valve port of the first control valve 81, and the other end is connected to the "k" valve port of the second control valve 82. One end of the fourth branch 73 is connected to the "g" valve port of the first control valve 81, and the other end is connected to the "k" valve port of the second control valve 82.

[0052] The heat exchanger circuit 50 includes a heat exchanger 51, with both ends of the heat exchanger 51 connected to a first control valve 81, and the air conditioning system 10 connected to the heat exchanger 51. Specifically, both ends of the heat exchanger circuit 50 are connected to the "e" and "f" ports of the first control valve 81, respectively, thereby enabling the heat exchanger circuit 50 to connect with other circuits, and the air conditioning system 10 to connect with the heat exchanger 51. In this way, the heat exchanger 51 exchanges heat with the air conditioning system 10, transferring heat to other circuits.

[0053] 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. 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 is connected to the "m" port of the second control valve 82 and the output end of the heater core 63. The other end of the condenser 61 is connected to the input end of the heater core 63 and the "i" port of the first control valve 81.

[0054] The coolant can flow through the condenser 61 for heat exchange and then release heat at the heater core 63 to heat the passenger compartment. Depending on the vehicle condition, the electric heater 62 can be turned on to heat the passenger compartment, and the electric heater 62 can be turned off when heating is not needed.

[0055] The air conditioning system 10 includes a compressor 11 and an evaporator 12. The compressor 11, evaporator 12, and condenser 61 are connected in series. The heat exchanger 51 and 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. Depending on the operating mode, 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, thereby achieving cooling of the passenger compartment.

[0056] The radiator circuit 40 includes a radiator 41, one end of which is connected to a first control valve 81. Specifically, one end of the radiator 41 is connected to the "j" valve port of the first control valve 81, and the coolant flows unidirectionally in the radiator circuit 40, flowing from the "j" valve port through the radiator 41 to dissipate heat, and the cooled coolant flows out of the radiator circuit 40.

[0057] Furthermore, the high-pressure heat exchange circuit 20 includes a motor 21, an electronic controller, and a first water pump 23, which are connected in series. During operation, the motor 21 and the motor controller 22 generate heat. After the coolant exchanges heat with the motor 21 and the motor controller 22, its temperature increases, which can transfer the heat to achieve the function of cooling the motor 21 and the motor controller 22 or heating other components.

[0058] Furthermore, the thermal management system 100 also includes a fifth branch 84, one end of which is connected to the first control valve 81, and the radiator 41 and the first water pump 23 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 "b" valve port of the first control valve 81. In some operating modes, the radiator 41 and the first water pump 23 are connected in series, and in some operating modes, the radiator 41 and the first water pump 23 are connected in parallel. In this case, the fifth branch 84 is connected to the radiator circuit 40.

[0059] Furthermore, the battery heat exchange circuit 30 includes a second water pump 31 and a battery pack 32, which are connected in series. One end of the second water pump 31 is connected to the "c" valve port of the first control valve 81, and one end of the battery pack 32 is connected to the "d" valve port of the first control valve 81.

[0060] The thermal management system 100 also includes an overflow tank 85 and a four-way pipe 86. The four-way pipe 86 is connected to the radiator circuit 40, the control valve, 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. It 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 four-way pipe 86. In various operating modes, the overflow tank 85 can be connected to the coolant side circuit to maintain the pressure balance on the coolant side.

[0061] The following reference Figures 2-8 The working mode of the thermal management system 100 according to an embodiment of the present invention is described.

[0062] Reference Figure 2 As shown, the working mode one of the thermal management system 100 in this embodiment of the present invention is as follows:

[0063] The "a" valve port and the "h" valve port of the first control valve 81 are connected, and the "g" valve port and the "j" valve port are connected. The radiator circuit 40 is connected in series with the high-pressure heat exchange circuit 20, and is connected to the third branch 72 and the fourth branch 73 through the first control valve 81 to realize the cooling function of high-pressure components.

[0064] Coolant flow direction: Radiator 41 → First water pump 23 → Motor controller 22 → Motor 21 → First control valve 81 → Radiator 41.

[0065] The coolant dissipates heat at the radiator 41 and becomes low-temperature coolant. When it passes 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 returns to the radiator 41 after passing through the first control valve 81 and the third branch 72 and the fourth branch 73 to cool down, and continues to circulate.

[0066] The first control valve 81 connects the "a" and "h" ports, and the "g" and "j" ports. The second control valve 82 connects the "l" and "m" ports, thereby enabling the condenser 61 and high-pressure components to be cooled in parallel.

[0067] Coolant flow direction: Radiator 41 → First water pump 23 → Motor controller 22 → Motor 21 → First control valve 81 → Radiator 41.

[0068] Condenser 61 → Electric heater 62 → Radiator 41 → Four-way pipe 86 → Second control valve 82 → Third water pump 64 → Condenser 61;

[0069] The coolant dissipates heat at the radiator 41 and becomes low-temperature coolant. A portion of the coolant exchanges heat with the motor controller 22 and the motor 21 and becomes high-temperature coolant, reducing the temperature of the motor controller 22 and the motor 21. The high-temperature coolant returns to the radiator 41 for cooling after passing through the first control valve 81 and the third branch 72 and the fourth branch 73. Another portion of the coolant exchanges heat with the condenser 61, cooling the refrigerant in the air conditioning system 10. The high-temperature coolant returns to the radiator 41 for heat dissipation.

[0070] The compressor 11 compresses the refrigerant into a high-temperature, high-pressure gas. It 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. Finally, it flows into the compressor 11.

[0071] In addition, the electric heater 62 is turned on according to the vehicle condition. When the air conditioning system 10 is not turned on or the heat of the condenser 61 is insufficient, the electric heater 62 is turned on to heat the passenger compartment. When heating is not required or the heat of the condenser 61 meets the heating needs of the passenger compartment, the electric heater 62 is turned off. The same applies to the electric heater 62 in other working modes described below.

[0072] Furthermore, the low-temperature, high-pressure refrigerant that has released heat at the condenser 61 can also be converted into a low-temperature, low-pressure refrigerant through the expansion valve. Without passing through the heat exchanger 51, it can directly return to the compressor 11 through the gas-liquid separator, forming a hot gas bypass circuit. The air conditioning system 10 in other operating modes described below can also form a hot gas bypass circuit.

[0073] The "d" and "f" ports of the first control valve 81 are connected, and the "e" and "c" ports are connected. The "l" and "m" ports of the second control valve 82 are connected. 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.

[0074] Coolant flow direction: Second water pump 31 → Battery pack 32 → First control valve 81 → Heat exchanger 51 → First control valve 81 → Second water pump 31;

[0075] Condenser 61 → Electric heater 62 → Radiator 41 → Four-way pipe 86 → Second control valve 82 → Third water pump 64 → Condenser 61;

[0076] Refrigerant flow direction: Compressor 11 → Condenser 61 → Heat exchanger 51 → Compressor 11.

[0077] Driven by the second water pump 31, the coolant exchanges heat with the battery pack 32, causing the battery pack 32 to cool down. 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.

[0078] The compressor 11 compresses the refrigerant into a high-temperature, high-pressure gas. At the condenser 61, it releases heat and becomes a low-temperature refrigerant. Then, at the heat exchanger 51, it absorbs heat from the coolant side and becomes a gas again, finally flowing back into the compressor 11. The high-temperature coolant at the condenser 61 dissipates heat through the radiator 41 and returns to the condenser 61, maintaining the system's thermal balance.

[0079] Reference Figure 3 As shown, the second working mode of the thermal management system 100 in this embodiment of the present invention is as follows:

[0080] The first control valve 81 has its "a" port connected to the "h" port, its "g" port connected to the "c" port, its "d" port connected to the "f" port, and its "e" port connected to the "j" port. The radiator circuit 40 is connected in series with the third branch 72, the fourth branch 73, the high-pressure heat exchange circuit 20, and the battery heat exchange circuit 30 to achieve the series cooling function of the high-pressure components and the battery pack 32.

[0081] 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 → Heat exchanger 51 → First control valve 81 → Radiator 41.

[0082] The coolant dissipates heat at the radiator 41, becoming a low-temperature coolant. As it passes through the motor controller 22, motor 21, and battery pack 32, it exchanges heat and becomes a high-temperature coolant. The temperature of the motor controller 22, motor 21, and battery pack 32 decreases, and the high-temperature coolant returns to the radiator 41 to cool further, continuing the circulation. The heat exchanger 51 can be used to regulate the heat dissipation of the motor controller 22, motor 21, and battery pack 32.

[0083] Crew cabin heating function:

[0084] Coolant flow direction: condenser 61 → electric heater 62 → heater core 63 → third water pump 64 → condenser 61;

[0085] Refrigerant flow: Compressor 11 → Condenser 61 → Heat exchanger 51 → Compressor 11;

[0086] Compressor 11 → Heat exchanger 51 → Compressor 11;

[0087] The compressor 11 compresses the refrigerant into a high-temperature, high-pressure gas. At the condenser 61, it releases heat and becomes a low-temperature refrigerant. The coolant temperature on the coolant side rises, flowing towards the heater core 63, releasing heat into the environment and being blown into the passenger compartment through the heater core 63 to heat the passenger compartment. 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 heat from the radiator circuit 40 and the high-pressure heat exchange circuit 20, exchanging heat with the air conditioning system 10 at the heat exchanger 51. This allows the refrigerant to absorb heat and become a gas at the heat exchanger 51, maintaining system circulation and regulating temperature. A portion of the refrigerant can return directly to the compressor 11 without passing through the condenser 61, forming a hot gas bypass circuit.

[0088] Reference Figure 4 As shown, the thermal management system 100 of this utility model operates in mode three:

[0089] The first control valve 81 has its "a" port connected to the "h" port, its "g" port connected to the "c" port, its "d" port connected to the "f" port, and its "e" port connected to the "b" port. The second control valve 82 has its "l" port connected to the "m" port. The battery pack 32 is heated by the waste heat of the motor 21 or by active heat generation. The battery pack 32 is heated by heat exchanger 51 and the battery pack 32 is heated by heat exchanger 51. The battery pack 32 is heated by heat exchanger 61 and the battery pack 32 is heated by heat exchanger 51. The battery pack 32 is heated by heat exchanger 51 and the battery pack 32 is heated by heat exchanger 61. The battery pack 32 is heated by heat exchanger 51 and the battery pack 32 is heated by heat exchanger 61.

[0090] Coolant flow direction: First water pump 23 → Motor controller 22 → Motor 21 → First control valve 81 → Second water pump 31 → Battery pack 32 → First control valve 81 → Heat exchanger 51 → First control valve 81 → First water pump 23;

[0091] Radiator 41 → First water pump 23 → Second control valve 82 → Third water pump 64 → Condenser 61 → Electric heater 62 → Radiator 41;

[0092] Condenser 61 → Electric heater 62 → Warm air core 63 → Third water pump 64 → Condenser 61;

[0093] Refrigerant flow: Compressor 11 → Condenser 61 → Heat exchanger 51 → Compressor 11;

[0094] Compressor 11 → Heat exchanger 51 → Compressor 11;

[0095] The coolant passes through the high-pressure heat exchange circuit 20, transferring the heat generated by the motor controller 22 and the motor 21 to the battery pack 32, thus heating the battery pack 32. The compressor 11 compresses the refrigerant into a high-temperature, high-pressure gas, releasing heat at the condenser 61 to become a low-temperature refrigerant. The coolant temperature on the coolant side increases; part of it flows to the heater core 63, releasing heat into the environment and being blown into the passenger compartment to heat it. The other part flows to the radiator 41, cooling down before returning to the condenser 61. The refrigerant needs to absorb heat to return to the compressor 11 to maintain the circulation of the air conditioning system 10. The coolant carries the heat from the high-pressure heat exchange circuit 20, exchanging heat with the air conditioning system 10 at the heat exchanger 51, allowing the refrigerant to absorb heat and become gaseous, maintaining system circulation and regulating the heating temperature of the battery pack 32. A portion of the refrigerant can return directly to the compressor 11 without passing through the condenser 61, forming a hot gas bypass circuit.

[0096] Reference Figure 5 As shown, the thermal management system 100 of this utility model operates in mode four:

[0097] The first control valve 81 has its "a" port connected to the "f" port, its "e" port connected to the "j" port, its "i" port connected to the "c" port, and its "d" port connected to the "h" port. The second control valve 82 has its "k" port connected to the "m" port. The system absorbs heat from the radiator circuit 40 and the high-pressure heat exchange circuit 20 through the air conditioning system 10, and then releases the heat through the condenser 61 to heat the battery pack 32 and the passenger compartment.

[0098] Coolant flow direction: First water pump 23 → Motor controller 22 → Motor 21 → First control valve 81 → Heat exchanger 51 → First control valve 81 → Radiator 41 → First water pump 23;

[0099] Condenser 61 → Electric heater 62 → Warm air core 63 → Third water pump 64 → Condenser 61;

[0100] Condenser 61 → Electric heater 62 → First control valve 81 → Second water pump 31 → Battery pack 32 → First control valve 81 → Second control valve 82 → Third water pump 64 → Condenser 61;

[0101] Refrigerant flow: Compressor 11 → Condenser 61 → Heat exchanger 51 → Compressor 11;

[0102] Compressor 11 → Heat exchanger 51 → Compressor 11;

[0103] The coolant passes through the radiator circuit 40 and the high-pressure heat exchange circuit 20, transferring the heat from these circuits to the air conditioning system 10 via heat exchanger 51. It then releases heat through the condenser 61 to the battery pack 32 and the passenger compartment, thus heating these systems. The compressor 11 compresses the refrigerant into a high-temperature, high-pressure gas, which releases heat at the condenser 61, becoming a low-temperature refrigerant. The coolant temperature on the coolant side increases, with a portion flowing to the heater core 63, releasing heat into the environment and being blown into the passenger compartment to heat it. The remaining portion flows through the first control valve 81 to the battery heat exchange circuit 30, heating the battery pack 32. The refrigerant needs to absorb heat and return to the compressor 11 to maintain the air conditioning system 10's circulation. The coolant carries heat from the radiator circuit 40 and the high-pressure heat exchange circuit 20, exchanging heat with the air conditioning system 10 at the heat exchanger 51. This allows the refrigerant to absorb heat and become gaseous at the heat exchanger 51, maintaining system circulation. A portion of the refrigerant can return directly to the compressor 11 without passing through the condenser 61, forming a hot gas bypass circuit.

[0104] Reference Figure 6 As shown, the working mode five of the thermal management system 100 in this embodiment of the present invention is as follows:

[0105] The first control valve 81 has its "a" port connected to the "f" port, its "e" port connected to the "b" port, its "i" port connected to the "c" port, and its "d" port connected to the "h" port. The second control valve 82 has its "k" port connected to the "m" port. The system absorbs heat from the high-pressure heat exchange circuit 20 through the air conditioning system 10, and then releases the heat through the condenser 61 to heat the battery pack 32 and the passenger compartment.

[0106] Coolant flow direction: First water pump 23 → motor controller 22 → motor 21 → first control valve 81 → heat exchanger 51 → first control valve 81 → four-way pipe 86 → first water pump 23;

[0107] Condenser 61 → Electric heater 62 → Warm air core 63 → Third water pump 64 → Condenser 61;

[0108] Condenser 61 → Electric heater 62 → First control valve 81 → Second water pump 31 → Battery pack 32 → First control valve 81 → Second control valve 82 → Third water pump 64 → Condenser 61;

[0109] Refrigerant flow: Compressor 11 → Condenser 61 → Heat exchanger 51 → Compressor 11;

[0110] Compressor 11 → Heat exchanger 51 → Compressor 11;

[0111] The coolant passes through the high-pressure heat exchange circuit 20, transferring heat from the high-pressure components to the air conditioning system 10 via heat exchanger 51. It then releases heat through condenser 61, transferring it to the battery pack 32 for heating. The compressor 11 compresses the refrigerant into a high-temperature, high-pressure gas, releasing heat at condenser 61 to become a low-temperature refrigerant. The coolant temperature on the coolant side increases, with a portion flowing to the heater core 63, releasing heat into the environment and being blown into the passenger compartment for heating. Another portion flows through the first control valve 81 to the battery heat exchange circuit 30, further heating the battery pack 32. The refrigerant needs to absorb heat and return to the compressor 11 to maintain the air conditioning system 10's circulation. The coolant carries heat from the high-pressure heat exchange circuit 20, exchanging heat with the air conditioning system 10 at heat exchanger 51, allowing the refrigerant to absorb heat and become gaseous, maintaining system circulation. A portion of the refrigerant can return directly to the compressor 11 without passing through condenser 61, forming a hot gas bypass circuit.

[0112] The "d" and "h" ports of the first control valve 81 are connected, the "i" and "c" ports are connected, the "k" and "m" ports of the second control valve 82 are connected, the battery heat exchange circuit 30, the second branch 71 and the third branch 72 are connected, so as to realize the function of uniform temperature of battery pack 32.

[0113] Coolant flow direction: Second water pump 31 → Battery pack 32 → First control valve 81 → Second control valve 82 → Heater core 63 → First control valve 81 → Second water pump 31.

[0114] The coolant circulates between the battery pack 32, the second branch 71, the third branch 72, and the heater core 63 to maintain the temperature uniformity between the cells or modules of the battery pack 32, and to avoid problems such as performance degradation, safety hazards and shortened lifespan caused by excessive temperature differences.

[0115] Reference Figure 7 As shown, the thermal management system 100 of this utility model operates in mode six:

[0116] The first control valve 81 connects the "a" port and the "h" port, and the "b" port and the "g" port. The high-pressure heat exchange circuit 20 is connected to the third branch 72 and the fourth branch 73, thereby realizing the function of electric drive heat storage.

[0117] Coolant flow direction: First water pump 23 → Motor controller 22 → Motor 21 → First control valve 81 → First control valve 81 → First water pump 23.

[0118] The coolant circulates in the high-pressure heat exchange circuit 20 and the third branch 72 and the fourth branch 73. It utilizes 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, improve energy efficiency, and enhance the overall vehicle performance.

[0119] Reference Figure 8 As shown, the working mode seven of the thermal management system 100 in this embodiment of the present invention is as follows:

[0120] The "a" and "h" ports of the first control valve 81 are connected, and the "i" and "b" ports are connected. The "k" and "m" ports of the second control valve 82 are connected. The high-pressure heat exchange circuit 20 is connected to the condenser 61 through the first control valve 81 and the second control valve 82 to realize the function of electric preheating.

[0121] Coolant flow direction: First water pump 23 → Motor controller 22 → Motor 21 → First control valve 81 → Second control valve 82 → Third water pump 64 → Condenser 61 → Electric heater 62 → First control valve 81 → Four-way pipe 86 → First water pump 23.

[0122] In low-temperature environments, the lubricating oil and heat-conducting materials of electric drive systems 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 starts. Electric drive systems can quickly reach design operating conditions, provide better power performance, and extend system life.

[0123] 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 temperature of the coolant on the coolant side rises, and the heat is transferred to the high-pressure heat exchange circuit 20 through the second branch 71 and the first control valve 81. The heat is then transferred to the electric drive system through the circulating coolant.

[0124] The "l" valve port and the "m" valve port of the second control valve 82 are connected to realize the cooling function of the crew cabin.

[0125] Coolant flow direction: condenser 61 → electric heater 62 → radiator 41 → four-way pipe 86 → first water pump 23 → second control valve 82 → third water pump 64 → condenser 61;

[0126] Refrigerant flow: Compressor 11 → Condenser 61 → Evaporator 12 → Compressor 11.

[0127] The compressor 11 compresses the refrigerant into a high-temperature, high-pressure gas. It releases heat at the condenser 61, becoming a low-temperature refrigerant, and absorbs heat at the evaporator 12, turning back into a gas. This lowers the ambient temperature, thereby cooling the passenger compartment. The gaseous refrigerant flows into the compressor 11. The high-temperature coolant at the condenser 61, after being cooled by the radiator 41, returns to the condenser 61, maintaining the system's thermal balance.

[0128] The air conditioning system 10 works in conjunction with the heating circuit 60 to achieve the dehumidification function of the passenger cabin.

[0129] Coolant flow direction: condenser 61 → electric heater 62 → heater core 63 → third water pump 64 → condenser 61;

[0130] Refrigerant flow: Compressor 11 → Condenser 61 → Evaporator 12 → Compressor 11;

[0131] Compressor 11 → Heat exchanger 51 → Compressor 11;

[0132] The compressor 11 compresses the refrigerant into a high-temperature, high-pressure gas. At the condenser 61, it releases heat and becomes a low-temperature refrigerant. The cooled refrigerant absorbs heat from the passenger compartment at the evaporator 12. When air from the passenger compartment passes through the evaporator 12, the surface temperature of the evaporator 12 is below the air dew point, causing water vapor in the air to condense into water droplets, forming condensate, which is collected in a water collection tank. The condensate is discharged outside the vehicle through a drain pipe. The refrigerant at the condenser 61 releases heat to the coolant side, and hot air is output through the heater core 63, reheating the dehumidified air. This dry air is then delivered to the passenger compartment, thereby reducing the humidity in the passenger compartment. When the weather temperature is high, dry air can be delivered to the passenger compartment through natural air warming. A portion of the refrigerant can also return directly to the compressor 11 without passing through the condenser 61, forming a hot gas bypass circuit.

[0133] A vehicle according to a second aspect embodiment of the present invention includes a thermal management system 100. In the description of the present invention, it should be understood that terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0134] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0135] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A thermal management system, characterized in that, include: Air conditioning system (10); A 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 exchanger circuit (50), a heating circuit (60), and a circulation circuit (70). The first control valve (81) selectively connects to 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). The second control valve (82) has one port connected to the circulation loop (70), another port connected to the radiator loop (40), and yet another port connected to the heating loop (60). One end of the heating circuit (60) is connected to the second control valve (82), and the other end of the heating circuit (60) is connected to the radiator circuit (40) and the first control valve (81).

2. The thermal management system according to claim 1, characterized in that, Also includes: The first branch (83) is connected at one end to the other end of the heating circuit (60) and one valve port of the first control valve (81), and at the other end of the first branch (83) is connected to the radiator circuit (40) and another valve port of the first control valve (81). A shut-off valve is provided on the first branch (83).

3. The thermal management system according to claim 2, characterized in that, Also includes: The second branch (71) has one end connected to the first control valve (81) and the other end connected to the first branch (83) and the other end of the heating circuit (60).

4. The thermal management system according to claim 1, characterized in that, The loop (70) includes a third branch (72) and a fourth branch (73), one end of the third branch (72) and one end of the fourth branch (73) are respectively connected to different valve ports of the first control valve (81), and the other end of the third branch (72) and the fourth branch (73) are connected to one valve port of the second control valve (82).

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

6. The thermal management system according to claim 5, characterized in that, The heating circuit (60) includes: a condenser (61), an electric heater (62), and a heating core (63). The electric heater (62) and the heating 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 heating core (63). The other end of the condenser (61) is connected to the other end of the heating core (63) and the first control valve (81).

7. The thermal management system according to claim 6, characterized in that, The air conditioning system (10) includes a compressor (11) and an evaporator (12), wherein 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).

8. The thermal management system according to claim 1, characterized in that, The radiator circuit (40) includes: a radiator (41), one end of which is connected to the first control valve (81); and, The high-pressure heat exchange circuit (20) includes: a motor (21), an electrical control unit, and a first water pump (23), wherein the motor (21), the electrical control unit, and the first water pump (23) are connected in series; and, The thermal management system further includes a fifth branch (84), one end of which is connected to the first control valve (81), and the radiator (41) and the first water pump (23) are connected in parallel and connected to the other end of the fifth branch (84).

9. The thermal management system according to claim 1, characterized in that, Also includes: The overflow tank (85) and the four-way pipe (86) are respectively connected to the radiator circuit (40), the control valve, 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 1-9.

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