Thermal management system and vehicle

Abstract

The application discloses a kind of thermal management system and vehicle, thermal management system includes: air conditioning system;First control valve, one end of first control valve is communicated with one end of high-pressure heat exchange circuit, and the other end of first control valve is communicated with one end of battery heat exchange circuit;Second control valve, second control valve is communicated with the other end of high-pressure heat exchange circuit, and heat sink circuit, heat exchanger circuit are also communicated on second control valve, and the other end of high-pressure heat exchange circuit is communicated with one end of radiator circuit and second control valve;At least two ends of first control valve and second control valve are communicated, and first control valve and second control valve selectively communicate one or more of high-pressure heat exchange circuit, battery heat exchange circuit, radiator circuit, heat exchanger circuit, and heat exchanger circuit exchanges heat with air conditioning system. By first control valve and second control valve to communicate each circuit, optimize architecture, reduce water resistance and optimize energy consumption;Make full use of waste heat, residual heat and environmental heat of motor, improve energy utilization rate.

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] With the rapid development of my country's pure electric vehicle industry, vehicle control systems are becoming increasingly integrated. 800V high-voltage systems are achieving higher efficiency and faster charging speeds, and thermal management systems are also evolving towards greater efficiency and energy conservation. Heat pump systems are becoming increasingly common, allowing for the rational utilization of motor waste heat and the diversification of battery cooling and heating methods. This has ultimately led to the increasing complexity and diversity of thermal management system architectures across various vehicle models.

[0003] Due to their varying properties and design requirements, each system and component in a pure electric vehicle has a different optimal operating temperature range. Therefore, external assistance is required to maintain each component within an appropriate temperature range to ensure normal, stable, and efficient operation of the components and to ensure that the passenger compartment meets the comfort requirements of the passengers. In pure electric vehicles, since the battery generates a large amount of heat during operation, and the battery's performance and lifespan are closely related to temperature, an efficient and intelligent thermal management architecture is crucial. 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 connects various circuits via a first control valve and a second control valve, optimizes the architecture, reduces water resistance, and optimizes energy consumption. It also fully utilizes the motor's waste heat, residual heat, and ambient heat to improve energy utilization.

[0005] The present invention also provides a vehicle.

[0006] According to an embodiment of the first aspect of the present invention, a thermal management system includes: an air-conditioning system; a first control valve, one end of the first control valve is connected to one end of a high-pressure heat exchange circuit, and another end of the first control valve is connected to one end of a battery heat exchange circuit; a second control valve, the second control valve is connected to the other end of the high-pressure heat exchange circuit, and the second control valve is also connected to a radiator circuit and a heat exchanger circuit, and the other end of the high-pressure heat exchange circuit is connected to one end of the radiator circuit and the second control valve; at least two ends of the first control valve are connected to the second control valve, and the first control valve and the second control valve are selectively connected to one or more of the high-pressure heat exchange circuit, the battery heat exchange circuit, the radiator circuit, and the heat exchanger circuit, and the heat exchanger circuit exchanges heat with the air-conditioning system.

[0007] The heat management system according to the embodiment of the present application, by connecting the radiator circuit and / or the high-pressure heat exchange circuit and / or the battery heat exchange circuit and / or the heat exchanger circuit through the first control valve and the second control valve, optimizes the architecture of the heat management system, reduces the number of components, reduces water resistance, optimizes energy consumption, and saves costs.

[0008] According to some embodiments of the present application, the heat management system further comprises a first multi-way pipe, one end of the first multi-way pipe being in communication with the other end of the battery heat exchange circuit, another end of the first multi-way pipe being selectively in communication with one end of the condenser, and yet another end of the first multi-way pipe being in communication with the second control valve.

[0009] According to some embodiments of the present application, the heat management circuit further comprises a heating circuit, and the heat management system further comprises a third control valve, one end of the third control valve being in communication with the other end of the first multi-way pipe, another end of the third control valve being in communication with one end of the heating circuit, and yet another end of the third control valve being in communication with the other end of the heating circuit.

[0010] According to some embodiments of the present application, the heat management system further comprises a first stop valve, one end of the first stop valve being in communication with the other end of the battery heat exchange circuit, and the other end of the first stop valve being in communication with one end of the heat exchanger circuit and the second control valve.

[0011] According to some embodiments of the present application, the heat management system further comprises a second stop valve, one end of the second stop valve being in communication with the other end of the condenser, and the other end of the second stop valve being in communication with the second control valve.

[0012] According to some embodiments of the present application, the heat management system further comprises a first check valve, one end of the first check valve being in communication with one end of the battery heat exchange circuit, and the other end of the first check valve being in communication with the first control valve.

[0013] According to some embodiments of the present application, the heat management system further comprises a second check valve, one end of the second check valve being in communication with the other end of the first check valve and the first control valve, and the other end of the second check valve being in communication with the second control valve.

[0014] According to some embodiments of the present application, the heat management system further comprises a second multi-way pipe, one end of the second multi-way pipe being in communication with the other end of the first check valve, another end of the second multi-way pipe being in communication with one end of the second check valve, and yet another end of the second multi-way pipe being in communication with the first control valve.

[0015] According to some embodiments of the present invention, the thermal management system further includes: a first branch, one end of the first branch being connected to the other end of the condenser, and the other end of the first branch being connected to the first control valve.

[0016] According to some embodiments of the present invention, the two ends of the heat exchanger circuit are respectively connected to the two ends of the second control valve, the heat exchanger circuit includes: a heat exchanger, the air-conditioning system is connected to the heat exchanger; and the air-conditioning system includes: a compressor, an evaporator and a condenser, the compressor, the evaporator and the condenser are connected in series; wherein, the heat exchanger and the evaporator are connected in parallel to each other and in series with the condenser.

[0017] According to some embodiments of the present invention, the radiator circuit includes: a radiator, one end of the radiator is connected to the second control valve and the other end of the high-pressure heat exchange circuit, and the other end of the radiator is connected to the second control valve.

[0018] A vehicle according to an embodiment of the second aspect of the present invention includes the thermal management system described above. The thermal management system connects various circuits via a first control valve and a second control valve, thereby optimizing the architecture, reducing water resistance, and optimizing energy consumption. The thermal management system also utilizes waste heat, residual heat, and ambient heat from the motor to improve energy efficiency.

[0019] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0021] Figure 1 is a schematic structural diagram of a thermal management system according to an embodiment of the present invention;

[0022] Figure 2 is a circuit diagram of a first mode of a thermal management system according to an embodiment of the present invention;

[0023] Figure 3 is a circuit diagram of a second mode of a thermal management system according to an embodiment of the present invention;

[0024] Figure 4 is a circuit diagram of a third mode of a thermal management system according to an embodiment of the present invention;

[0025] Figure 5 is a circuit diagram of a fourth mode of a thermal management system according to an embodiment of the present invention;

[0026] Figure 6FIG. 4 is a circuit diagram of a fifth mode of a thermal management system according to an embodiment of the present invention.

[0027] Figure 7 FIG. 4 is a circuit diagram of a sixth mode of a thermal management system according to an embodiment of the present invention.

[0028] Reference numerals:

[0029] 100. Thermal management system;

[0030] 10. High-pressure heat exchange circuit; 11. Motor; 12. Electronic control; 13. First water pump;

[0031] 20. Battery heat exchange circuit; 21. Battery pack; 22. Second water pump;

[0032] 30. Radiator circuit; 31. Radiator;

[0033] 40. Heat exchanger circuit; 41. Heat exchanger;

[0034] 50. Heating circuit; 51. Warm air core; 52. Electric heater; 53. Third water pump;

[0035] 61. First control valve; 62. Second control valve; 63. Third control valve; 64. First multi-way pipe; 65. Second multi-way pipe; 66. First one-way valve; 67. Second one-way valve; 68. First stop valve; 69. Second stop valve;

[0036] 71. Condenser; 72. Evaporator; 73. Compressor;

[0037] 81. Overflow tank; 82. Four-way pipe; 83. First branch. DETAILED DESCRIPTION

[0038] 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.

[0039] Reference below Figures 1-7 A thermal management system 100 according to an embodiment of the present invention is described, and a vehicle is also proposed.

[0040] The thermal management system 100 includes an air conditioning system that can exchange heat with a heat exchanger circuit 40 . Refrigerant flows through the air conditioning system, and coolant flows through the heat exchanger circuit 40 . The refrigerant and coolant exchange heat at a heat exchanger 41 in the heat exchanger circuit 40 .

[0041] The thermal management system 100 further includes a first control valve 61 , one end of which is connected to one end of the high-pressure heat exchange circuit 10 , and another end of which is connected to one end of the battery heat exchange circuit 20 .

[0042] The first control valve 61 can include a first valve port, a second valve port, a third valve port, and a fourth valve port. The first control valve 61 can arbitrarily communicate two or more of the first valve port, the second valve port, the third valve port, and the fourth valve port. The first valve port is "a" in Figures 1-7 , the second valve port is "b" in Figures 1-7 , the third valve port is "c" in Figures 1-7 , and the fourth valve port is "d" in Figures 1-7 .

[0043] As shown in Figure 1 , the first valve port is communicated with one end of the high-pressure heat exchange circuit 10, and the second valve port is communicated with one end of the battery heat exchange circuit 20.

[0044] The thermal management system 100 further includes a second control valve 62, the second control valve 62 being communicated with the other end of the high-pressure heat exchange circuit 10, and the second control valve 62 further being communicated with the radiator circuit 30 and the heat exchanger circuit 40, the other end of the high-pressure heat exchange circuit 10 being communicated with one end of the radiator circuit 30 and the second control valve 62.

[0045] The second control valve 62 can include 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. The second control valve 62 can arbitrarily communicate two or more of the fifth valve port, the sixth valve port, the seventh valve port, the eighth valve port, the ninth valve port, and the tenth valve port. The fifth valve port is "e" in Figures 1-7 , the sixth valve port is "f" in Figures 1-7 , the seventh valve port is "g" in Figures 1-7 , the eighth valve port is "h" in Figures 1-7 , the ninth valve port is "i" in Figures 1-7 , and the tenth valve port is "j" in Figures 1-7 .

[0046] As shown in Figure 1 , the sixth valve port is communicated with one end of the radiator circuit 30 and the other end of the high-pressure heat exchange circuit 10, the seventh valve port is communicated with the other end of the heat exchanger circuit 40, the eighth valve port is communicated with one end of the heat exchanger circuit 40 and the other end of the battery heat exchange circuit 20, the ninth valve port can be communicated with the other end of the battery heat exchange circuit 20 or the fourth valve port, and the tenth valve port is communicated with the other end of the radiator circuit 30.

[0047] At least two ends of the first control valve 61 and the second control valve 62 are communicated, that is, the third valve port can be communicated with the fifth valve port of the second control valve 62, and the fourth valve port can be communicated with the ninth valve port of the second control valve 62.

[0048] The first control valve 61 and the second control valve 62 selectively communicate one or more of the high-pressure heat exchange circuit 10, the battery heat exchange circuit 20, the radiator circuit 30, and the heat exchanger circuit 40, and the heat exchanger circuit 40 exchanges heat with the air conditioning system.

[0049] As shown in FIG. 1, the first control valve 61 and the second control valve 62 can be connected in series with the radiator circuit 30 and the high-pressure heat exchange circuit 10, so that the radiator circuit 30 and the high-pressure heat exchange circuit 10 form a closed circuit, and the heat generated by the high-voltage device is carried to the radiator circuit 30 by the coolant, thereby achieving heat dissipation of the high-voltage device. Figure 2 As shown in FIG. 2, the first control valve 61 and the second control valve 62 can be connected in series with the high-pressure heat exchange circuit 10 and the battery heat exchange circuit 20, that is, the first valve port and the fourth valve port are communicated, the second valve port and the third valve port are communicated, the fifth valve port and the ninth valve port are communicated, and the sixth valve port and the eighth valve port are communicated, so that the high-pressure heat exchange circuit 10 and the battery heat exchange circuit 20 form a closed circuit, and the coolant flows through the high-pressure heat exchange circuit 10 and the battery heat exchange circuit 20 and absorbs the heat of the high-voltage device, and the coolant flows through the battery heat exchange circuit 20 to heat the battery pack 21.

[0050] Figure 7 As shown in FIG. 3, the first control valve 61 and the second control valve 62 are connected in series with the battery heat exchange circuit 20 and the heat exchanger circuit 40, the second valve port and the third valve port are communicated, and the third valve port and the fifth valve port are communicated, and the fifth valve port and the seventh valve port are communicated, so that the battery heat exchange circuit 20 and the heat exchanger circuit 40 are connected in series. The coolant flows between the heat exchanger circuit 40 and the battery heat exchange circuit 20, the refrigerant in the air conditioning system flows through the heat exchanger 41, exchanges heat with the coolant at the heat exchanger 41, absorbs the heat of the battery pack 21, and actively cools the battery pack 21; and releases heat to the air conditioning system, which can be used for heating and improves energy utilization.

[0051] As shown in FIG. 4, the first control valve 61 and the second control valve 62 are connected in series with the radiator circuit 30 and the high-pressure heat exchange circuit 10, so that the radiator circuit 30 and the high-pressure heat exchange circuit 10 form a closed circuit, and the heat generated by the high-voltage device is carried to the radiator circuit 30 by the coolant, thereby achieving heat dissipation of the high-voltage device. Figure 2 Thus, by connecting the radiator circuit 30 and / or the high-pressure heat exchange circuit 10 and / or the battery heat exchange circuit 20 and / or the heat exchanger circuit 40 through the first control valve 61 and the second control valve 62, the architecture of the thermal management system 100 is optimized, and the water resistance and energy consumption are reduced.

[0052]

[0053] ​​Thermal management system 100 also includes a first manifold 64, one end of which communicates with the other end of battery heat exchange circuit 20, another end of which selectively communicates with one end of condenser 71, and another end of which communicates with second control valve 62. First manifold 64 connects one end of battery heat exchange circuit 20 with one end of condenser 71, and the other end of condenser 71 selectively communicates with second control valve 62 or first control valve 61. This allows the battery heat exchange circuit 20 and condenser 71 to be connected in series to heat battery pack 21; alternatively, the radiator circuit 30, battery heat exchange circuit 20, and condenser 71 can be connected in series to cool condenser 71.

[0054] According to some embodiments of the present invention, the thermal management circuit also includes: a heating circuit 50; and, the thermal management system 100 also includes: a third control valve 63, one end of the third control valve 63 is connected to another end of the first multi-way pipe 64, another end of the third control valve 63 is connected to one end of the heating circuit 50, and another end of the third control valve 63 is connected to the other end of the heating circuit 50.

[0055] The third control valve 63 includes: the eleventh valve port, the twelfth valve port and the thirteenth valve port, and the second control valve 62 can arbitrarily connect two or three of the eleventh valve port, the twelfth valve port and the thirteenth valve port. Figures 1-7 The "k" in the twelfth valve port is Figures 1-7 The "m" in the thirteenth valve port is Figures 1-7 The "n" in .

[0056] When the twelfth valve port and the thirteenth valve port are connected, a closed loop is formed in the heating circuit 50, thereby achieving heating of the passenger compartment.

[0057] When the eleventh valve port and the twelfth valve port are connected, one end of the condenser 71 can be connected to the battery heat exchange circuit 20. When the other end of the condenser 71 is connected to the second control valve 62 (such as Figure 3 As shown in FIG), the battery heat exchange circuit 20, the condenser 71 and the radiator circuit 30 can be connected in series to achieve cooling of the battery pack 21 and the condenser 71. When the other end of the condenser 71 is connected to the first control valve 61 (as shown in FIG), the battery heat exchange circuit 20, the condenser 71 and the radiator circuit 30 can be connected in series to achieve cooling of the battery pack 21 and the condenser Figure 4 As shown), the battery pack 21 can be heated.

[0058] In addition, the thermal management system 100 further includes: a first stop valve 68 , one end of the first stop valve 68 is connected to the other end of the battery heat exchange loop 20 , and the other end of the first stop valve 68 is connected to one end of the heat exchanger loop 40 and the second control valve 62 .

[0059] like Figures 3-6 As shown, the first shut-off valve 68 is closed, and the battery heat exchange circuit 20 is not connected to the heat exchanger circuit 40.Figure 4 As shown, one end of the heat exchanger loop 40 is connected to the eighth valve port of the second control valve 62. The first control valve 61 and the second control valve 62 can be connected in series to the heat exchanger loop 40 and the high-pressure heat exchange loop 10. The heat exchanger loop 40 exchanges heat with the air-conditioning system. The refrigerant of the air-conditioning system absorbs the waste heat generated by the high-pressure components. When the condenser 71 is connected in series with the battery heat exchange loop 20, the refrigerant exchanges heat with the coolant at the condenser 71. The coolant flows through the battery pack 21 and uses the heat to heat the battery pack 21.

[0060] When the first shut-off valve 68 is opened, one end of the battery heat exchange loop 20 is connected to one end of the heat exchanger loop 40 or the eighth valve port of the second control valve 62 .

[0061] At this time, if the first control valve 61 and the second control valve 62 are connected in series with the other end of the battery heat exchange loop 20 and one end of the heat exchange loop 40 (such as Figure 2 As shown), the second valve port is connected to the third valve port, and the fifth valve port is connected to the seventh valve port, then the battery heat exchange and the heat exchanger circuit 40 are connected in series, and the refrigerant of the air-conditioning system exchanges heat with the coolant in the heat exchanger circuit 40. The refrigerant can absorb the heat of the battery pack 21 in the battery heat exchange circuit 20, and use the heat for heating the passenger compartment through the condenser 71 or for cooling through the radiator 31.

[0062] Or, as Figure 7 As shown, the first valve port is connected to the fourth valve port, the second valve port is connected to the third valve port, the fifth valve port is connected to the ninth valve port, and the sixth valve port is connected to the eighth valve port. The first control valve 61 and the second control valve 62 are connected in series with the high-pressure heat exchange circuit 10 and the battery heat exchange circuit 20. The heat exchanger circuit 40 exchanges heat with the air-conditioning system. The refrigerant of the air-conditioning system absorbs the waste heat generated by the high-pressure components in the high-pressure heat exchange circuit 10. When the condenser 71 is connected in series with the battery heat exchange circuit 20, the refrigerant exchanges heat with the coolant at the condenser 71. The coolant flows through the battery pack 21 and uses the heat to heat the battery pack 21.

[0063] In some other embodiments, the thermal management system 100 further includes: a second stop valve 69 , one end of the second stop valve 69 is connected to the other end of the condenser 71 , and the other end of the second stop valve 69 is connected to the second control valve 62 .

[0064] like Figure 2 When the second stop valve 69 is closed, the other end of the condenser 71 cannot be directly connected to the ninth valve port of the second control valve 62 .

[0065] like Figure 3As shown, the second stop valve 69 is opened, the other end of the condenser 71 is connected to the ninth valve port of the second control valve 62, the ninth valve port is connected to the tenth valve port, the fifth valve port is connected to the sixth valve port, the second valve port is connected to the third valve port, and the eleventh valve port is connected to the twelfth valve port, then the radiator circuit 30, the battery heat exchange circuit 20 and the condenser 71 are connected in series, realizing series cooling of the battery pack 21 and the condenser 71.

[0066] like Figure 1 As shown, the thermal management system 100 further includes: a first one-way valve 66, one end of which is connected to one end of the battery heat exchange circuit 20; and a second one-way valve 67, one end of which is connected to the other end of the first one-way valve 66 and the first control valve 61, and the other end of the second one-way valve 67 is connected to the second control valve 62. Specifically, the first one-way valve 66 and the second one-way valve 67 are connected in series, with the other end of the first one-way valve 66 connected to the first control valve 61 and one end of the second one-way valve 67.

[0067] Specifically, the first one-way valve 66 can allow the coolant flowing out of the other end of the first multi-way pipe 64 to flow in one direction toward the first control valve 61 or the second one-way valve 67 .

[0068] like Figure 3 As shown, the second one-way valve 67 connects the other end of the first one-way valve 66 with the ninth valve port. If at this time the first control valve 61 connects the second valve port and the third valve port, and the second control valve 62 connects the fifth valve port and the sixth valve port and connects the ninth valve port and the tenth valve port, then the battery heat exchange circuit 20 and the radiator circuit 30 are connected in series to achieve cooling of the battery pack 21.

[0069] Or, as Figure 2 As shown, the second one-way valve 67 can connect the fourth valve port of the first control valve 61 and the ninth valve port of the second control valve 62, so as to realize the series connection of the radiator circuit 30 and the high-pressure heat exchange circuit 10, and dissipate the heat generated by the high-pressure device in the high-pressure heat exchange circuit 10 to the outside through the radiator circuit 30, thereby realizing the cooling of the high-pressure device.

[0070] Furthermore, the thermal management system 100 further includes: a second multi-way pipe 65, one end of the second multi-way pipe 65 is connected to the other end of the first one-way valve 66, another end of the second multi-way pipe 65 is connected to one end of the second one-way valve 67, and another end of the second multi-way pipe 65 is connected to the first control valve 61. The second multi-way pipe 65 is connected to the fourth valve port and the second one-way valve 67, as shown in FIG. Figure 2 As shown, the radiator circuit 30 and the high-pressure heat exchange circuit 10 are connected in series, as shown in FIG. Figure 4 and Figure 5As shown, the radiator circuit 30 is connected in series with the heat exchanger circuit 40 and / or the high-pressure heat exchange circuit 10. The heat exchanger 41 absorbs the heat of the high-pressure device and / or the environment and transfers it to the refrigerant of the air-conditioning system. The refrigerant exchanges heat with the coolant at the condenser 71. When the condenser 71 is connected in series with the battery pack 21 or the heater core 51, the battery pack 21 or the passenger compartment can be heated. Figure 7 As shown, the high-pressure heat exchange circuit 10 and the battery heat exchange circuit 20 are connected in series. The coolant absorbs the heat of the motor 11 in the high-pressure heat exchange circuit 10 and then flows through the battery pack 21 to heat the battery pack 21.

[0071] like Figure 3 As shown, the second multi-way tube 65 can be connected to the fourth valve port and the second one-way valve 67, and the radiator circuit 30 and the high-pressure heat exchange circuit 10 are connected in series to achieve cooling of the high-voltage device; and the second multi-way tube 65 can also be connected to the first one-way valve 66 and the second one-way valve 67, and the radiator circuit 30 and the battery heat exchange circuit 20 are connected in series to achieve cooling of the battery pack 21.

[0072] Combine Figure 1 、 Figures 3-5 and Figure 7 As shown, the thermal management system 100 further includes a first branch 83 , one end of which is connected to the other end of the condenser 71 , and the other end of the first branch 83 is connected to the first control valve 61 . The first branch 83 can connect the other end of the condenser 71 with the first control valve 61 .

[0073] like Figure 4 and Figure 5 As shown, when the second stop valve 69 is closed, the other end of the condenser 71 can be connected to the third valve port of the first control valve 61, the first control valve 61 is connected to the second valve port and the third valve port, and the third control valve 63 is connected to the eleventh valve port and the twelfth valve port, then the battery heat exchange circuit 20 and the condenser 71 are connected in series, and the refrigerant of the air-conditioning system can release heat (heat from the high-pressure heat exchange circuit 10, ambient heat and heat generated by the compressor 73) to the coolant at the condenser 71 for heating the battery pack 21.

[0074] According to some embodiments of the present invention, both ends of heat exchanger circuit 40 are connected to either end of second control valve 62, namely, one end of heat exchanger circuit 40 is connected to the seventh valve port, and the other end of heat exchanger circuit 40 is connected to the eighth valve port. Heat exchanger circuit 40 includes a heat exchanger 41, one end of which is connected to second control valve 62, and the other end of which is connected to second control valve 62. The air conditioning system is connected to heat exchanger 41. Furthermore, the air conditioning system includes a compressor 73, an evaporator 72, and a condenser 71, wherein compressor 73, evaporator 72, and condenser 71 are connected in series. Heat exchanger 41 and evaporator 72 are connected in parallel and in series with condenser 71. The refrigerant in condenser 71 exchanges heat with the coolant in heat exchanger 41, thereby absorbing heat from battery heat exchange circuit 20 or high-pressure heat exchange circuit 10. The refrigerant flows out of the compressor 73 and releases heat at the condenser 71. The refrigerant that has released heat absorbs heat at the evaporator 72 and finally returns to the compressor 73. When the passenger compartment is cooled, the refrigerant absorbs heat from the passenger compartment at the evaporator 72, and the coolant flowing through the condenser 71 releases heat to the heating circuit 50.

[0075] Furthermore, the heat exchanger 41 is connected in parallel with the evaporator 72, so that the refrigerant can flow to the heat exchanger 41 to absorb heat after releasing heat in the condenser 71. The heat absorbed by the refrigerant from the heat exchanger 41 can be used to be transferred to the heating circuit 50 at the condenser 71 for heating the passenger compartment; or, the refrigerant can flow to the evaporator 72 to absorb heat after releasing heat in the condenser 71.

[0076] According to some embodiments of the present invention, the heating circuit 50 includes a condenser 71, an electric heater 52, and a heater core 51. The electric heater 52, heater core 51, and condenser 71 are connected in series. The condenser 71 is not only part of the air conditioning system, but also part of the heating circuit 50. When the air conditioning system is operating, the condenser 71 generates heat, which can be transferred to the battery heat exchange circuit 20 or the heater core 51 to heat the battery pack 21 or the passenger compartment, thereby effectively utilizing the heat from the air conditioning system.

[0077] One end of the heater core 51 is connected to the third control valve 63, and the other end of the heater core 51 is connected to the other end of the condenser 71. When the third control valve 63 is connected in series with the heating circuit 50, the condenser 71 dissipates heat from the air conditioning system into the coolant. The coolant then flows through the heater core 51, dissipating the heat into the passenger compartment, thereby heating the passenger compartment.

[0078] An electric heater 52 is provided between the heater core 51 and the condenser 71. The electric heater 52 can heat the coolant in the heating circuit 50. Thus, when the air conditioning system is not running or the condenser 71 is insufficiently heated, the electric heater 52 can provide heating or heat the battery pack 21. The electric heater 52 can be a PTC heater.

[0079] Furthermore, the radiator circuit 30 includes a radiator 31 , one end of which is in communication with the second control valve 62 and the other end of the high-pressure heat exchange circuit 10 , and the other end of the radiator 31 is in communication with the second control valve 62 . Specifically, when coolant in the radiator 31 flows through the radiator 31 , if the coolant temperature is higher than the ambient temperature, the coolant can dissipate heat to the outside through the radiator 31 ; if the coolant temperature is lower than the ambient temperature, the coolant absorbs ambient heat at the radiator 31 .

[0080] Furthermore, the battery heat exchange circuit 20 includes a battery pack 21 and a second water pump 22, which are connected in series. Driven by the second water pump 22, coolant circulates through the battery heat exchange circuit 20. If the coolant flowing through the battery heat exchange circuit 20 is higher than the temperature of the battery pack 21, the coolant heats the battery pack 21. If the coolant flowing through the battery heat exchange circuit 20 is lower than the temperature of the battery pack 21, the coolant cools the battery pack 21.

[0081] Thermal management system 100 also includes an overflow tank 81 and a cross-section pipe 82. Cross-section pipe 82 communicates with radiator circuit 30, first control valve 61, high-pressure heat exchange circuit 10, and overflow tank 81, respectively. Radiator 31 communicates with the sixth valve port and high-pressure heat exchange circuit 10 via cross-section pipe 82. One end of cross-section pipe 82 communicates with one end of radiator 31, another end of cross-section pipe 82 communicates with overflow tank 81, yet another end of cross-section pipe 82 communicates with the sixth valve port, and yet another end of cross-section pipe 82 communicates with the other end of high-pressure heat exchange circuit 10.

[0082] A vehicle according to an embodiment of the second aspect of the present invention includes a thermal management system 100. A shutoff valve separates the primary battery cooling circuit from the passive battery cooling circuit. A second control valve 62 enables parallel cooling of the high-pressure heat exchange circuit 10 and the condenser 71 to ensure battery cooling during high-temperature, fast-charging scenarios. A heat exchanger 41 utilizes multiple layers of a water-source heat pump, including ambient heat, active heat generated by the motor 11, and waste heat from the motor 11, optimizing energy consumption. A third control valve 63 allows for proportional adjustment and decoupling of the battery heat exchange circuit 20 and the heater core 51.

[0083] Refer to the following Figures 1-7 The six operating modes of the thermal management system 100 according to the embodiment of the present invention are described.

[0084] Reference Figure 2 As shown, the thermal management system 100 operates in mode 1:

[0085] Loop one: radiator 31→first water pump 13→ECU 12→motor 11→first control valve 61→second check valve 67→second control valve 62→radiator 31.

[0086] Wherein, the first valve port and the fourth valve port are communicated, the ninth valve port and the tenth valve port are communicated, that is, the first control valve 61 and the second control valve 62 are connected in series with the radiator circuit 30 and the high-pressure heat exchange circuit 10, the waste heat generated by the motor 11 and the ECU 12 is dissipated to the outside through the radiator 31, and the cooling of the motor 11 and the ECU 12 is realized.

[0087] Loop two: battery pack 21→first stop valve 68→heat exchanger 41→second control valve 62→first control valve 61→second water pump 22→battery pack 21.

[0088] Wherein, the second valve port and the third valve port are communicated, the fifth valve port and the seventh valve port are communicated, the first stop valve 68 is opened, and the battery heat exchange circuit 20 and the heat exchanger 41 are connected in series through the first control valve 61 and the second control valve 62, that is, the heat exchanger 41, the battery pack 21 and the second water pump 22 are connected in series, so that the cooling liquid circulates between the heat exchanger 41 and the battery pack 21, the heat exchanger 41 can absorb the heat of the battery pack 21 and exchange heat with the air conditioning system, thereby realizing the cooling of the battery pack 21.

[0089] Loop three: condenser 71→electric heater 52→warm air core 51→third control valve 63→third water pump 53→condenser 71.

[0090] Wherein, the twelfth valve port and the thirteenth valve port are communicated, the third control valve 63 is connected to both ends of the heating circuit 50, the condenser 71, the electric heater 52, the warm air core 51 and the third water pump 53 are connected in series, the heat exchanger 41 absorbs the heat of the battery pack 21 and releases it to the air conditioning system, and the condenser 71 can transfer this part of the heat to the heating circuit 50 for passenger compartment heating, improving energy utilization. According to actual needs, the electric heater 52 can be opened to assist passenger compartment heating.

[0091] Referring to Figure 3 Fig. 2 shows the working mode two of the thermal management system 100:

[0092] Loop one: radiator 31→first water pump 13→ECU 12→motor 11→first control valve 61→second check valve 67→second control valve 62→radiator 31.

[0093] Wherein, the first valve port and the fourth valve port are communicated, the ninth valve port and the tenth valve port are communicated, that is, the first control valve 61 and the second control valve 62 are connected in series with the radiator circuit 30 and the high-pressure heat exchange circuit 10, the waste heat generated by the motor 11 and the ECU 12 is dissipated to the outside through the radiator 31, and the cooling of the motor 11 and the ECU 12 is realized.

[0094] Loop two: radiator 31→ second control valve 62→ first control valve 61→ second water pump 22→ battery pack 21→ first one-way valve 66→ second one-way valve 67→ second control valve 62→ radiator 31.

[0095] Wherein, the third valve port and the second valve port are communicated, the fifth valve port and the sixth valve port are communicated, the ninth valve port and the tenth valve port are communicated, that is, the radiator 31 and the battery pack 21 are connected in series, the cooling liquid flows between the radiator 31 and the battery pack 21, the heat of the battery pack 21 is dissipated to the outside through the radiator 31, and the battery pack 21 is cooled.

[0096] Loop three: radiator 31→ second control valve 62→ first control valve 61→ second water pump 22→ battery pack 21→ third control valve 63→ condenser 71→ electric heater 52→ second stop valve 69→ second control valve 62→ radiator 31.

[0097] Wherein, the third valve port and the second valve port are communicated, the fifth valve port and the sixth valve port are communicated, the ninth valve port and the tenth valve port are communicated, the eleventh valve port and the twelfth valve port are communicated, and the second stop valve 69 is opened, that is, the first control valve 61 and the second control valve 62 can be connected in series with the radiator loop 30, the battery heat exchange loop 20 and the condenser 71, the heat of the battery pack 21 and the heat of the condenser 71 can be dissipated to the outside through the radiator 31, and the battery pack 21 and the condenser 71 are cooled.

[0098] Loop four: condenser 71→ electric heater 52→ warm air core 51→ third control valve 63→ third water pump 53→ condenser 71.

[0099] Wherein, the twelfth valve port and the thirteenth valve port are communicated, the third control valve 63 is connected to both ends of the heating loop 50, the condenser 71, the electric heater 52, the warm air core 51 and the third water pump 53 are connected in series, the heat exchanger 41 absorbs the heat of the battery pack 21 and releases to the air conditioning system, and the condenser 71 can transmit the heat to the heating loop 50 for cabin heating, thereby improving energy utilization. According to actual needs, the electric heater 52 can be opened to assist cabin heating.

[0100] Referring to Figure 4 Fig. 3 shows the working mode three of the thermal management system 100:

[0101] Loop one: radiator 31→ first water pump 13→ electric control 12→ motor 11→ first control valve 61→ second one-way valve 67→ second control valve 62→ heat exchanger 41→ second control valve 62→ radiator 31.

[0102] The first valve port and the fourth valve port are communicated, the eighth valve port and the ninth valve port are communicated, and the seventh valve port and the tenth valve port are communicated. That is, the first control valve 61 and the second control valve 62 are connected in series with the radiator circuit 30, the high-pressure heat exchange circuit 10 and the heat exchanger circuit 40, and the radiator 31, the first water pump 13, the electric control 12, the motor 11 and the heat exchanger 41 are connected in series. Under the driving of the first water pump 13, the coolant flows through the radiator 31, the electric control 12 and the motor 11 in sequence, absorbs ambient heat at the radiator 31, absorbs heat of the motor 11, and transmits the absorbed heat to the refrigerant circulating in the air conditioning system through the heat exchanger 41.

[0103] Circuit two: condenser 71→electric heater 52→first control valve 61→second water pump 22→battery pack 21→third control valve 63→third water pump 53→condenser 71.

[0104] The second valve port and the third valve port are communicated, the eleventh valve port and the twelfth valve port are communicated, the second stop valve 69 is closed, the battery heat exchange circuit 20 and the condenser 71 are connected in series, the refrigerant absorbs heat of the motor 11 and ambient heat at the heat exchanger 41, and transmits the heat to the coolant at the condenser 71, for heating the battery pack 21 and improving energy utilization rate.

[0105] Circuit three: condenser 71→electric heater 52→warm air core 51→third control valve 63→third water pump 53→condenser 71.

[0106] The eleventh valve port and the twelfth valve port are communicated, the third control valve 63 is connected to both ends of the heating circuit 50, the condenser 71, the electric heater 52, the warm air core 51 and the third water pump 53 are connected in series, the refrigerant absorbs heat of the motor 11 and ambient heat at the heat exchanger 41, and transmits the heat to the heating circuit 50 at the condenser 71, for heating the passenger compartment and improving energy utilization rate.

[0107] The user can also open the electric heater 52 according to actual needs to assist in heating the passenger compartment.

[0108] Referring to Figure 5 Fig. 4 shows working mode four of the thermal management system 100:

[0109] Circuit one: first water pump 13→electric control 12→motor 11→first control valve 61→second check valve 67→second control valve 62→heat exchanger 41→second control valve 62→first water pump 13.

[0110] The first valve port and the fourth valve port are communicated, the eighth valve port and the ninth valve port are communicated, and the seventh valve port and the sixth valve port are communicated. That is, the first control valve 61 and the second control valve 62 are connected in series with the high-pressure heat exchange circuit 10 and the heat exchanger circuit 40, and the first water pump 13, the electric control 12, the motor 11 and the heat exchanger 41 are connected in series.

[0111] When the heat exchanger 41 is working, the refrigerant in the air-conditioning system flows through the heat exchanger 41; driven by the first water pump 13, the coolant flows through the electronic control 12 and the motor 11 in sequence, and absorbs the heat of the motor 11. The refrigerant absorbs the heat of the motor 11 at the heat exchanger 41 and is transmitted to the condenser 71 through the air-conditioning system.

[0112] When the heat exchanger 41 is not working, that is, the refrigerant in the air-conditioning system does not flow through the heat exchanger 41 , the heat in the high-pressure heat exchange circuit 10 is stored in the circuit, and the motor 11 stores heat.

[0113] Loop 2: condenser 71 → electric heater 52 → first control valve 61 → second water pump 22 → battery pack 21 → third control valve 63 → third water pump 53 → condenser 71 .

[0114] The second valve port is connected to the third valve port, the eleventh valve port is connected to the twelfth valve port, and the first control valve 61 and the third control valve 63 are connected in series to the battery pack 21 and the condenser 71 .

[0115] When the heat exchanger 41 is working, the refrigerant absorbs the heat of the motor 11 at the heat exchanger 41 and releases this heat to the coolant at the condenser 71, which is used to heat the battery pack 21 and improve energy utilization.

[0116] When heat exchanger 41 is not operating, compressor 73 can generate heat to heat battery pack 21. In extreme environments where rapid heating is required, the refrigerant flowing out of compressor 73 is split into two parts. One part of the refrigerant bypasses condenser 71 and returns directly to compressor 71. The other part flows to condenser 71 and releases heat there. Condenser 71 is then connected in series with battery pack 21, thereby heating battery pack 21. The remaining part of the refrigerant, which has released heat, then flows to heat exchanger 41. The two parts of refrigerant mix there before returning to compressor 73.

[0117] Circuit three: condenser 71 → electric heater 52 → heater core 51 → third control valve 63 → third water pump 53 → condenser 71 .

[0118] Among them, the twelfth valve port and the thirteenth valve port are connected, the third control valve 63 is connected to both ends of the heating circuit 50, and the condenser 71, the electric heater 52, the warm air core 51 and the third water pump 53 are connected in series.

[0119] When the heat exchanger 41 is working, the refrigerant absorbs the heat of the motor 11 and transfers this heat to the heating circuit 50 at the condenser 71 for heating the passenger compartment, thereby improving energy utilization.

[0120] When heat exchanger 41 is not operating, compressor 73 can generate heat to heat the passenger compartment. In extreme environments where rapid heating is required, the refrigerant flowing out of compressor 73 is split into two parts. One part of the refrigerant bypasses condenser 71 and returns directly to compressor 71. The other part flows to condenser 71 and releases heat there. Condenser 71 is then connected in series with heater core 51, thereby heating the passenger compartment. The remaining part of the refrigerant, which has released heat, then flows to heat exchanger 41. The two parts of refrigerant mix there and return to compressor 73.

[0121] The user can also turn on the electric heater 52 according to actual needs to assist in heating the passenger compartment.

[0122] Reference Figure 6 As shown, the fifth working mode of the thermal management system 100 is:

[0123] Circuit 1: battery pack 21 → first one-way valve 66 → second one-way valve 67 → second control valve 62 → first control valve 61 → second water pump 22 → battery pack 21 .

[0124] Among them, the second valve port is connected to the third valve port, and the fifth valve port is connected to the ninth valve port, that is, the first control valve 61 and the second control valve 62 are connected to the two ends of the battery heat exchange circuit 20 to achieve uniform temperature of the battery pack 21.

[0125] According to actual needs, the third control valve 63 can also connect the two ends of the heating circuit 50 to achieve heating of the passenger compartment.

[0126] Reference Figure 7 As shown, the sixth working mode of the thermal management system 100 is:

[0127] Circuit 1: first water pump 13 → electronic control 12 → motor 11 → first control valve 61 → second one-way valve 67 → second control valve 62 → first control valve 61 → second water pump 22 → battery pack 21 → first stop valve 68 → second control valve 62 → first water pump 13 .

[0128] Among them, the first valve port is connected to the fourth valve port, the ninth valve port is connected to the fifth valve port, the second valve port is connected to the third valve port, the first stop valve 68 is open, the sixth valve port is connected to the eighth valve port, and since the fourth valve port is connected to the fifth valve port, the first control valve 61 and the second control valve 62 are connected in series with the high-pressure heat exchange circuit and the battery heat exchange circuit 20. The coolant can absorb the heat generated by the motor 11 and flow through the battery pack 21 to heat the battery pack 21.

[0129] Circuit 2: condenser 71 → electric heater 52 → second shut-off valve 69 → second control valve 62 → first control valve 61 → second water pump 22 → battery pack 21 → third control valve 63 → third water pump 53 → condenser 71 .

[0130] The fifth valve port is connected to the ninth valve port, the second valve port is connected to the third valve port, the eleventh valve port is connected to the twelfth valve port, and the second shut-off valve 69 is open. This means that the first control valve 61, the second control valve 62, and the third control valve 63 are connected in series between the battery pack 21 and the condenser 71. Compressor 73 is operating, and the refrigerant flows between the condenser 71, the evaporator 72, and the compressor 73. The refrigerant releases heat at the condenser 71, and the coolant flows through the condenser 71, exchanging heat with the refrigerant and absorbing the heat. The coolant then flows through the battery pack 21, heating it.

[0131] Circuit three: condenser 71 → electric heater 52 → heater core 51 → third control valve 63 → third water pump 53 → condenser 71 .

[0132] The twelfth and thirteenth valve ports are connected, and the third control valve 63 connects both ends of the heating circuit 50. The condenser 71, electric heater 52, heater core 51, and third water pump 53 are connected in series. When the compressor 73 is operating, the refrigerant flows between the condenser 71, evaporator 72, and compressor 73. The refrigerant releases heat at the condenser 71, and the coolant flows through the condenser 71, exchanging heat with the refrigerant and absorbing heat. The coolant then flows through the heater core 51 to heat the passenger compartment.

[0133] 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.

[0134] 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.

[0135] 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: Air conditioning system; a first control valve (61), one end of the first control valve (61) being in communication with one end of the high-pressure heat exchange circuit (10), and another end of the first control valve (61) being in communication with one end of the battery heat exchange circuit (20); a second control valve (62), the second control valve (62) being in communication with the other end of the high-pressure heat exchange circuit (10), the second control valve (62) also being in communication with the radiator circuit (30) and the heat exchange circuit (40), the other end of the high-pressure heat exchange circuit (10) being in communication with one end of the radiator circuit (30) and the second control valve (62); At least two ends of the first control valve (61) are in communication with the second control valve (62), and the first control valve (61) and the second control valve (62) selectively communicate with one or more of the high-pressure heat exchange circuit (10), the battery heat exchange circuit (20), the radiator circuit (30), and the heat exchange circuit (40), and the heat exchange circuit (40) exchanges heat with the air conditioning system; a first multi-way pipe (64) and a heating circuit (50), wherein the heating circuit (50) includes a condenser (71), one end of the first multi-way pipe (64) is connected to the other end of the battery heat exchange circuit (20), another end of the first multi-way pipe (64) is selectively connected to one end of the condenser (71) and one end of the heating circuit (50), and another end of the first multi-way pipe (64) is connected to the second control valve (62); a first one-way valve (66), a second one-way valve (67) and a second multi-way pipe (65), one end of the second multi-way pipe (65) being in communication with the other end of the first one-way valve (66), another end of the second multi-way pipe (65) being in communication with one end of the second one-way valve (67), another end of the second multi-way pipe (65) being in communication with the first control valve (61), the other end of the first one-way valve (66) being in communication with one end of the battery heat exchange circuit (20), and the other end of the second one-way valve (67) being in communication with the second control valve (62); A first branch (83), one end of the first branch (83) is connected to the other end of the condenser (71), and the other end of the first branch (83) is connected to the first control valve (61).

2. The thermal management system (100) according to claim 1, characterized in that The thermal management system (100) further includes: a third control valve (63), one end of the third control valve (63) being connected to another end of the first multi-way pipe (64), another end of the third control valve (63) being connected to one end of the heating circuit (50), and another end of the third control valve (63) being connected to the other end of the heating circuit (50).

3. The thermal management system according to claim 1, wherein: Also includes: A first stop valve (68), one end of the first stop valve (68) is in communication with the other end of the battery heat exchange circuit (20), and the other end of the first stop valve (68) is in communication with one end of the heat exchanger circuit (40) and the second control valve (62).

4. The thermal management system according to claim 1, wherein: Also includes: A second stop valve (69), one end of the second stop valve (69) is communicated with the other end of the condenser (71), and the other end of the second stop valve (69) is communicated with the second control valve (62).

5. The thermal management system according to claim 1, wherein: The two ends of the heat exchanger circuit (40) are respectively connected to the two ends of the second control valve (62), and the heat exchanger circuit (40) includes: a heat exchanger (41), the air conditioning system and the heat exchanger (41) are connected; and, The air conditioning system comprises: a compressor (73), an evaporator (72), wherein the compressor (73), the evaporator (72) and the condenser (71) are connected in series; The heat exchanger (41) and the evaporator (72) are connected in parallel to each other and in series with the condenser (71).

6. The thermal management system according to claim 1, wherein: The radiator circuit (30) comprises a radiator (31), one end of the radiator (31) being in communication with the second control valve (62) and the other end of the high-pressure heat exchange circuit (10), and the other end of the radiator (31) being in communication with the second control valve (62).

7. A vehicle, characterized in that: include: The thermal management system (100) according to any one of claims 1 to 6.

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