Thermal management system and vehicle

Abstract

The invention discloses a thermal management system and a vehicle. The thermal management system comprises an air conditioning system; one end of the first control valve is communicated with one end of the high-pressure heat exchange loop, and the other end of the first control valve is communicated with one end of the battery heat exchange loop; the second control valve is communicated with the other end of the high-pressure heat exchange loop, the second control valve is further communicated with a radiator loop and a heat exchanger loop, and the other end of the high-pressure heat exchange loop is communicated with one end of the radiator loop and the second control valve; at least two ends of the first control valve are communicated with the second control valve, the first control valve and the second control valve are selectively communicated with one or more of the high-pressure heat exchange loop, the battery heat exchange loop, the radiator loop and the heat exchanger loop, and the heat exchanger loop exchanges heat with the air conditioning system. Each loop is communicated through the first control valve and the second control valve, the architecture is optimized, and the water resistance optimization energy consumption is reduced; waste heat of the motor and environment heat are fully utilized, and the energy utilization rate is improved.

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, the integration of vehicle control systems is becoming increasingly higher, the 800V high-voltage system is more efficient and charges faster, and the thermal management system is also constantly improving in the direction of high efficiency and energy saving. Heat pump systems have been widely used, motor waste heat has been reasonably utilized, and battery cooling and heating methods have been diversified, which ultimately leads to the complexity and diversification of the thermal management system architecture of various models.

[0003] Due to different properties and design requirements, each system and its components of a pure electric vehicle have different optimal operating temperature ranges, so external auxiliary means are needed to maintain each component in an appropriate temperature range to ensure that the components work normally, stably, and efficiently and that the passenger compartment meets the comfort requirements of passengers. In pure electric vehicles, since the battery generates a lot of heat when working, and the performance and life of the battery are closely related to temperature, an efficient and intelligent thermal management architecture is crucial. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a thermal management system, which connects various circuits through a first control valve and a second control valve, optimizes the architecture, reduces water resistance and optimizes energy consumption; and fully utilizes the waste heat, residual heat and ambient heat of the motor to improve energy utilization.

[0005] The present invention also provides a vehicle.

[0006] A thermal management system according to an embodiment of the first aspect of the present invention 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] According to the thermal management system of the embodiment of the present invention, the radiator circuit and / or the high-pressure heat exchange circuit and / or the battery heat exchange circuit and / or the heat exchanger circuit are connected through the first control valve and the second control valve, so as to optimize the architecture of the thermal management system, reduce the number of components, reduce water resistance, optimize energy consumption, and save costs.

[0008] According to some embodiments of the present invention, the thermal management system also includes: a first multi-way tube, one end of the first multi-way tube is connected to the other end of the battery heat exchange circuit, another end of the first multi-way tube is selectively connected to one end of the condenser, and another end of the first multi-way tube is connected to the second control valve.

[0009] According to some embodiments of the present invention, the thermal management circuit also includes: a heating circuit; and the thermal management system also includes: a third control valve, one end of the third control valve is connected to another end of the first multi-way pipe, another end of the third control valve is connected to one end of the heating circuit, and another end of the third control valve is connected to the other end of the heating circuit.

[0010] According to some embodiments of the present invention, the thermal management system further includes: a first stop valve, one end of which is connected to the other end of the battery heat exchange circuit, and the other end of the first stop valve is connected to one end of the heat exchanger circuit and the second control valve.

[0011] According to some embodiments of the present invention, the thermal management system further includes: a second stop valve, one end of the second stop valve is connected to the other end of the condenser, and the other end of the second stop valve is connected to the second control valve.

[0012] According to some embodiments of the present invention, the thermal management system further comprises: a first one-way valve, one end of the first one-way valve being connected to one end of the battery heat exchange circuit, and the other end of the first one-way valve being connected to the first control valve; According to some embodiments of the present invention, the thermal management system further includes: a second one-way valve, one end of the second one-way valve is connected to the other end of the first one-way valve and the first control valve, and the other end of the second one-way valve is connected to the second control valve.

[0013] According to some embodiments of the present invention, the thermal management system also includes: a second multi-way tube, one end of the second multi-way tube is connected to the other end of the first one-way valve, another end of the second multi-way tube is connected to one end of the second one-way valve, and another end of the second multi-way tube is connected to the first control valve.

[0014] According to some embodiments of the present invention, the thermal management system further includes: a first branch, one end of the first branch is connected to the other end of the condenser, and the other end of the first branch is connected to the first control valve.

[0015] According to some embodiments of the present invention, two ends of the heat exchanger circuit are respectively connected to two ends of the second control valve, and the heat exchanger circuit includes: a heat exchanger, and the air-conditioning system is connected to the heat exchanger; and the air-conditioning system includes: a compressor, an evaporator and a condenser, and 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.

[0016] 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.

[0017] The vehicle according to the second embodiment of the present invention includes: the thermal management system described above. The first control valve and the second control valve are used to connect various circuits, optimize the architecture, reduce water resistance and optimize energy consumption; and make full use of the waste heat, residual heat and ambient heat of the motor to improve energy utilization.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which: Figure 1 is a schematic structural diagram of a thermal management system according to an embodiment of the present invention; Figure 2 is a circuit diagram of a first mode of a thermal management system according to an embodiment of the present invention; Figure 3 is a circuit diagram of a second mode of a thermal management system according to an embodiment of the present invention; Figure 4 is a circuit diagram of a third mode of a thermal management system according to an embodiment of the present invention; Figure 5 is a circuit diagram of a fourth mode of a thermal management system according to an embodiment of the present invention; Figure 6 4 is a circuit diagram of a fifth mode of a thermal management system according to an embodiment of the present invention.

[0020] Figure 7 4 is a circuit diagram of a sixth mode of a thermal management system according to an embodiment of the present invention.

[0021] Reference numerals: 100. Thermal management system; 10. High-pressure heat exchange circuit; 11. Motor; 12. Electronic control; 13. First water pump; 20. Battery heat exchange circuit; 21. Battery pack; 22. Second water pump; 30. Radiator circuit; 31. Radiator; 40. heat exchanger circuit; 41. heat exchanger; 50. Heating circuit; 51. Warm air core; 52. Electric heater; 53. Third water pump; 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; 71. Condenser; 72. Evaporator; 73. Compressor; 81. Overflow tank; 82. Four-way pipe; 83. First branch. DETAILED DESCRIPTION

[0022] Embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Embodiments of the present invention are described in detail below.

[0023] Reference below Figure 1-Figure 7 A thermal management system 100 according to an embodiment of the present invention is described, and a vehicle is also proposed.

[0024] The thermal management system 100 includes an air conditioning system, which can exchange heat with a heat exchanger loop 40 . A refrigerant flows in the air conditioning system, and a coolant flows in the heat exchanger loop 40 . The refrigerant and the coolant exchange heat at a heat exchanger 41 in the heat exchanger loop 40 .

[0025] The thermal management system 100 further includes: a first control valve 61 , one end of the first control valve 61 is connected to one end of the high-pressure heat exchange loop 10 , and another end of the first control valve 61 is connected to one end of the battery heat exchange loop 20 .

[0026] The first control valve 61 may include: a first valve port, a second valve port, a third valve port and a fourth valve port. The first control valve 61 may arbitrarily connect two or more of the first valve port, the second valve port, the third valve port and the fourth valve port. Figure 1-Figure 7 The second valve port is Figure 1-Figure 7 The "b" in the third valve port is Figure 1-Figure 7 The "c" in the fourth valve port is Figure 1-Figure 7 The "d" in .

[0027] like Figure 1 As shown, the first valve port is connected to one end of the high-pressure heat exchange loop 10 , and the second valve port is connected to one end of the battery heat exchange loop 20 .

[0028] The thermal management system 100 also includes: a second control valve 62, which is connected to the other end of the high-pressure heat exchange circuit 10, and the second control valve 62 is also connected to the radiator circuit 30 and the heat exchanger circuit 40. The other end of the high-pressure heat exchange circuit 10 is connected to one end of the radiator circuit 30 and the second control valve 62.

[0029] The second control valve 62 may 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 may arbitrarily connect to 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 Figure 1-Figure 7 The "e" in the figure indicates the sixth valve port. Figure 1-Figure 7 The "f" in the figure indicates the seventh valve port. Figure 1-Figure 7 The "g" in the eighth valve port is Figure 1-Figure 7 The "h" in the ninth valve port is Figure 1-Figure 7 The "i" in the tenth valve port is Figure 1-Figure 7 The "j" in .

[0030] like Figure 1 As shown, the sixth valve port is connected to one end of the radiator loop 30 and the other end of the high-pressure heat exchange loop 10, the seventh valve port is connected to the other end of the heat exchange loop 40, the eighth valve port is connected to one end of the heat exchange loop 40 and the other end of the battery heat exchange loop 20; the ninth valve port can be connected to the other end of the battery heat exchange loop 20 or the fourth valve port, and the tenth valve port is connected to the other end of the radiator loop 30.

[0031] At least two ends of the first control valve 61 are in communication with the second control valve 62 , that is, the third valve port can be in communication with the fifth valve port of the second control valve 62 , and the fourth valve port can be in communication with the ninth valve port of the second control valve 62 .

[0032] The first control valve 61 and the second control valve 62 selectively connect 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.

[0033] like Figure 2 As shown, the first control valve 61 and the second control valve 62 can be connected in series to 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-pressure device is brought to the radiator circuit 30 through the coolant, thereby realizing the heat dissipation of the high-pressure device.

[0034] like Figure 7As shown, 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 connected, the second valve port and the third valve port are connected, the fifth valve port and the ninth valve port are connected, and the sixth valve port and the eighth valve port are connected, so that the high-pressure heat exchange circuit 10 and the battery heat exchange circuit 20 form a closed loop, 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 devices. When the coolant flows through the battery heat exchange circuit 20, the heat is used to heat the battery pack 21.

[0035] like Figure 2 As shown, the first control valve 61 and the second control valve 62 are connected in series with the battery heat exchange loop 20 and the heat exchanger loop 40, the second valve port is connected to the third valve port, the third valve port is connected to the fifth valve port, and the fifth valve port is connected to the seventh valve port, so the battery heat exchange loop 20 is connected in series with the heat exchanger loop 40. The coolant flows between the heat exchanger loop 40 and the battery heat exchange loop 20, and the refrigerant in the air conditioning system flows through the heat exchanger 41, and exchanges heat with the coolant at the heat exchanger 41. The refrigerant absorbs the heat of the battery pack 21 to achieve active cooling of the battery pack 21; and releases the heat to the air conditioning system, which can be used for heating to improve energy utilization.

[0036] Therefore, 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 are connected through the first control valve 61 and the second control valve 62, thereby optimizing the architecture of the thermal management system 100, reducing water resistance and optimizing energy consumption.

[0037] The thermal management system 100 further includes: a first multi-way pipe 64, one end of which is connected to the other end of the battery heat exchange circuit 20, another end of which is selectively connected to one end of the condenser 71, and another end of which is connected to the second control valve 62. The first multi-way pipe 64 can connect one end of the battery heat exchange circuit 20 with one end of the condenser 71, and the other end of the condenser 71 can be selectively connected to the second control valve 62 or the first control valve 61, thereby connecting the battery heat exchange circuit 20 and the condenser 71 in series to achieve heating of the battery pack 21; or connecting the radiator circuit 30, the battery heat exchange circuit 20 and the condenser 71 in series to achieve cooling of the condenser 71.

[0038] 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.

[0039] The third control valve 63 includes: an eleventh valve port, a twelfth valve port and a 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. Figure 1-Figure 7 The "k" in the twelfth valve port is Figure 1-Figure 7 The "m" in the thirteenth valve port is Figure 1-Figure 7 The "n" in .

[0040] When the twelfth valve port and the thirteenth valve port are connected, a closed loop is formed in the heating circuit 50, so that the passenger compartment can be heated.

[0041] 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. 1 ), 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. 1 ), 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 Figure 4 As shown), the battery pack 21 can be heated.

[0042] 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 .

[0043] like Figure 3-Figure 6 As shown, the first stop 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, and 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, and the refrigerant of the air-conditioning system absorbs the waste heat generated by the high-pressure device. 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, and the coolant flows through the battery pack 21, and the heat is used to heat the battery pack 21.

[0044] When the first stop 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 .

[0045] 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 2As 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.

[0046] Or, if 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, 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, and 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 the heat is used to heat the battery pack 21.

[0047] 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 .

[0048] 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 .

[0049] like Figure 3 As 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, 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, so that the battery pack 21 and the condenser 71 are cooled in series.

[0050] 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 the thermal management system 100 further includes: 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 in sequence, and the other end of the first one-way valve 66 is connected to the first control valve 61 and one end of the second one-way valve 67.

[0051] Specifically, the first one-way valve 66 can allow the coolant flowing out from the other end of the first multi-way pipe 64 to flow toward the first control valve 61 or the second one-way valve 67 in one direction.

[0052] 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.

[0053] Or, if 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, so as to realize the cooling of the high-pressure device.

[0054] Further, 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, such as Figure 4 and Figure 5 As 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 transmits 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, and 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.

[0055] 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-pressure 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.

[0056] Combination Figure 1 , Figure 3-Figure 5 and Figure 7As shown, the thermal management system 100 further includes 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. The first branch 83 can connect the other end of the condenser 71 with the first control valve 61.

[0057] 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.

[0058] According to some embodiments of the present invention, the two ends of the heat exchanger loop 40 are respectively connected to the two ends of the second control valve 62, that is, one end of the heat exchanger loop 40 is connected to the seventh valve port, and the other end of the heat exchanger loop 40 is connected to the eighth valve port. The heat exchanger loop 40 includes: a heat exchanger 41, one end of the heat exchanger 41 is connected to the second control valve 62, the other end of the heat exchanger 41 is connected to the second control valve 62, and the air conditioning system is connected to the heat exchanger 41; and the air conditioning system includes: a compressor 73, an evaporator 72 and a condenser 71, the compressor 73, the evaporator 72 and the condenser 71 are connected in series; wherein the heat exchanger 41 and the evaporator 72 are connected in parallel and in series with the condenser 71. The refrigerant in the condenser 71 exchanges heat with the coolant of the heat exchanger 41, so that the refrigerant can absorb the heat of the battery heat exchange loop 20 or the high-pressure heat exchange loop 10. The refrigerant flows out of the compressor 73 , releases heat at the condenser 71 , 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 .

[0059] 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.

[0060] 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, and the electric heater 52, the heater core 51 and the condenser 71 are connected in series. The condenser 71 is not only a part of the air conditioning system, but also a part of the heating circuit 50. In this way, when the air conditioning system is running, the condenser 71 will generate 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, so that the heat of the air conditioning system can be reasonably used.

[0061] 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 the heat of the air conditioning system into the coolant, and the coolant flows through the heater core 51, thereby dissipating the heat into the passenger compartment, thereby heating the passenger compartment.

[0062] An electric heater 52 is provided between the heater core 51 and the condenser 71, and the coolant in the heating circuit 50 can be heated by the electric heater 52, so that when the air conditioning system is not running or the condenser 71 is insufficient in heat, the electric heater 52 can play a role in heating or heating the battery pack 21. The electric heater 52 can be a PTC heater.

[0063] And, the radiator circuit 30 includes: a radiator 31, one end of the radiator 31 is connected to 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 connected to the second control valve 62. Specifically, when the coolant of the radiator 31 flows through the radiator 31, if the temperature of the coolant is higher than the ambient temperature, the heat of the coolant can be dissipated to the outside through the radiator 31; if the temperature of the coolant is lower than the ambient temperature, the coolant absorbs ambient heat at the radiator 31.

[0064] And, the battery heat exchange loop 20 includes: a battery pack 21 and a second water pump 22, and the battery pack 21 and the second water pump 22 are connected in series. The battery pack 21 and the second water pump 22 are connected in series. The coolant can flow in the battery heat exchange loop 20 driven by the second water pump 22. If the coolant flowing in the battery heat exchange loop 20 is higher than the temperature of the battery pack 21, the coolant heats the battery pack 21. If the coolant flowing in the battery heat exchange loop 20 is lower than the temperature of the battery pack 21, the battery pack 21 is cooled.

[0065] The thermal management system 100 further includes: an overflow tank 81 and a cross-tube 82, wherein the cross-tube 82 is respectively connected to the radiator circuit 30, the first control valve 61, the high-pressure heat exchange circuit 10 and the overflow tank 81. The radiator 31 is connected to the sixth valve port and the high-pressure heat exchange circuit 10 through the cross-tube 82. One pipe port of the cross-tube 82 is connected to one end of the radiator 31, another pipe port of the cross-tube 82 is connected to the overflow tank 81, another pipe port of the cross-tube 82 is connected to the sixth valve port, and another pipe port of the cross-tube 82 is connected to the other end of the high-pressure heat exchange circuit 10.

[0066] The vehicle according to the second embodiment of the present invention includes: a thermal management system 100. The main battery cooling and passive cooling circuits are distinguished by the shut-off valve, and the high-pressure heat exchange circuit 10 and the condenser 71 are cooled in parallel by the second control valve 62 to ensure the cooling requirements of the battery in the high-temperature fast charging scenario; the multi-layer utilization of the water source heat pump is realized by the heat exchanger 41, including the ambient heat, the active heat generated by the motor 11, the residual heat of the motor 11, etc., to optimize energy consumption; the proportional adjustment and decoupling relationship between the battery heat exchange circuit 20 and the warm air core 51 can be realized by the third control valve 63.

[0067] Refer to the following Figure 1-Figure 7 Six operation modes of the thermal management system 100 according to the embodiment of the present invention are described.

[0068] Reference Figure 2 As shown, the working mode 1 of the thermal management system 100 is: Circuit 1: radiator 31 → first water pump 13 → electronic control 12 → motor 11 → first control valve 61 → second check valve 67 → second control valve 62 → radiator 31 .

[0069] Among them, the first valve port is connected to the fourth valve port, and the ninth valve port is connected to the tenth valve port, 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, and the waste heat generated by the motor 11 and the electronic control 12 is dissipated to the outside through the radiator 31, thereby realizing the cooling of the motor 11 and the electronic control 12.

[0070] Loop 2: 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 .

[0071] Among them, the second valve port is connected to the third valve port, the fifth valve port is connected to the seventh valve port, 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 coolant circulates between the heat exchanger 41 and the battery pack 21, and the heat exchanger 41 can absorb the heat of the battery pack 21 and exchange heat with the air-conditioning system, so as to achieve cooling of the battery pack 21.

[0072] Loop three: condenser 71 →electric heater 52 →warm air core 51 →third control valve 63 →third water pump 53 →condenser 71 .

[0073] Among them, the twelfth valve port is connected to the thirteenth valve port, the third control valve 63 is connected to both ends of the heating circuit 50, the condenser 71, the electric heater 52, the heater 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 heating the passenger compartment to improve energy utilization. The electric heater 52 can be turned on according to actual needs to assist in heating the passenger compartment.

[0074] Reference Figure 3 As shown, the second working mode of the thermal management system 100 is: Circuit 1: radiator 31 → first water pump 13 → electronic control 12 → motor 11 → first control valve 61 → second check valve 67 → second control valve 62 → radiator 31 .

[0075] Among them, the first valve port is connected to the fourth valve port, and the ninth valve port is connected to the tenth valve port, 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, and the waste heat generated by the motor 11 and the electronic control 12 is dissipated to the outside through the radiator 31, thereby realizing the cooling of the motor 11 and the electronic control 12.

[0076] Loop 2: radiator 31 → second control valve 62 → first control valve 61 → second water pump 22 → battery pack 21 → first check valve 66 → second check valve 67 → second control valve 62 → radiator 31 .

[0077] Among them, the third valve port is connected to the second valve port, the fifth valve port is connected to the sixth valve port, and the ninth valve port is connected to the tenth valve port, that is, the radiator 31 and the battery pack 21 are connected in series, and the coolant flows between the radiator 31 and the battery pack 21, dissipating the heat of the battery pack 21 to the outside through the radiator 31, thereby cooling the battery pack 21.

[0078] 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 .

[0079] Among them, the third valve port and the second valve port are connected, the fifth valve port and the sixth valve port are connected, the ninth valve port and the tenth valve port are connected, the eleventh valve port and the twelfth valve port are connected, 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 circuit 30, the battery heat exchange circuit 20 and the condenser 71, and the heat of the battery pack 21 and the heat of the condenser 71 can be dissipated to the outside through the radiator 31, so as to realize the cooling of the battery pack 21 and the condenser 71.

[0080] Loop four: condenser 71 →electric heater 52 →warm air core 51 →third control valve 63 →third water pump 53 →condenser 71 .

[0081] Among them, the twelfth valve port is connected to the thirteenth valve port, the third control valve 63 is connected to both ends of the heating circuit 50, the condenser 71, the electric heater 52, the heater 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 heating the passenger compartment to improve energy utilization. The electric heater 52 can be turned on according to actual needs to assist in heating the passenger compartment.

[0082] Reference Figure 4 As shown, the working mode 3 of the thermal management system 100 is: Circuit 1: radiator 31 → first water pump 13 → electronic control 12 → motor 11 → first control valve 61 → second check valve 67 → second control valve 62 → heat exchanger 41 → second control valve 62 → radiator 31 .

[0083] Among them, the first valve port is connected to the fourth valve port, the eighth valve port is connected to the ninth valve port, and the seventh valve port is connected to the tenth valve port. That is to say, 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 electronic control 12, the motor 11 and the heat exchanger 41 are connected in series. Under the drive of the first water pump 13, the coolant flows through the radiator 31, the electronic control 12, and the motor 11 in sequence. The coolant absorbs environmental heat at the radiator 31, and the coolant absorbs heat from the motor 11, and transmits the absorbed heat to the refrigerant circulating in the air-conditioning system through the heat exchanger 41.

[0084] 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 .

[0085] Among them, the second valve port is connected to the third valve port, the eleventh valve port is connected to the twelfth valve port, the second stop valve 69 is closed, the battery heat exchange circuit 20 and the condenser 71 are connected in series, and the refrigerant absorbs the heat of the motor 11 and the ambient heat at the heat exchanger 41, and transfers this part of the heat to the coolant at the condenser 71, which is used to heat the battery pack 21 and improve energy utilization.

[0086] Loop three: condenser 71 →electric heater 52 →warm air core 51 →third control valve 63 →third water pump 53 →condenser 71 .

[0087] Among them, the eleventh valve port and the twelfth valve port are connected, the third control valve 63 is connected to both ends of the heating circuit 50, the condenser 71, the electric heater 52, the heater core 51 and the third water pump 53 are connected in series, and the refrigerant absorbs the heat of the motor 11 and the ambient heat at the heat exchanger 41, and transfers this part of the heat to the heating circuit 50 at the condenser 71, which is used for heating the passenger compartment to improve energy utilization.

[0088] The user can also turn on the electric heater 52 according to actual needs to assist in heating the passenger compartment.

[0089] Reference Figure 5 As shown, the fourth working mode of the thermal management system 100 is: Circuit 1: first water pump 13 → electronic 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 .

[0090] Among them, the first valve port is connected to the fourth valve port, the eighth valve port is connected to the ninth valve port, and the seventh valve port is connected to the sixth valve port. In other words, 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.

[0091] 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.

[0092] 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, so that the motor 11 accumulates heat.

[0093] 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 .

[0094] Among them, 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 .

[0095] 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.

[0096] When the heat exchanger 41 is not working, the compressor 73 can work to generate heat and heat the battery pack 21. In extreme environments, rapid heating is required, and the refrigerant flowing out of the compressor 73 is divided into two parts. One part of the refrigerant does not pass through the condenser 71 and directly returns to the compressor 71; the other part flows to the condenser 71 and releases heat at the condenser 71, and the condenser 71 is connected in series with the battery pack 21, thereby heating the battery pack 21; then the other part of the refrigerant that has released heat flows to the heat exchanger 41, and the two parts of the refrigerant are mixed at the heat exchanger 41 and then return to the compressor 73.

[0097] Loop three: condenser 71 →electric heater 52 →warm air core 51 →third control valve 63 →third water pump 53 →condenser 71 .

[0098] Among them, the twelfth valve port is connected to the thirteenth valve port, 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.

[0099] 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.

[0100] When the heat exchanger 41 is not working, the compressor 73 can work to create heat and achieve heating of the passenger compartment. In extreme environments, rapid heating is required, and the refrigerant flowing out of the compressor 73 is divided into two parts. One part of the refrigerant does not pass through the condenser 71 and directly returns to the compressor 71; the other part flows to the condenser 71 and releases heat at the condenser 71, and the condenser 71 is connected in series with the heater core 51, thereby achieving heating of the passenger compartment; then the other part of the refrigerant that has released heat flows to the heat exchanger 41, and the two parts of the refrigerant are mixed at the heat exchanger 41 and then return to the compressor 73.

[0101] The user can also turn on the electric heater 52 according to actual needs to assist in heating the passenger compartment.

[0102] Reference Figure 6 As shown, the fifth working mode of the thermal management system 100 is: 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 .

[0103] 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.

[0104] 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.

[0105] Reference Figure 7 As shown, the sixth working mode of the thermal management system 100 is: Circuit 1: first water pump 13 → electronic control 12 → motor 11 → first control valve 61 → second check 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 .

[0106] Among them, the first valve port is connected with the fourth valve port, the ninth valve port is connected with the fifth valve port, the second valve port is connected with the third valve port, the first stop valve 68 is opened, the sixth valve port is connected with the eighth valve port, and because the fourth valve port is connected with 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, and the coolant can absorb the heat generated by the motor 11 and flow through the battery pack 21 to heat the battery pack 21.

[0107] Loop 2: condenser 71 → electric heater 52 → second stop 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 .

[0108] Among them, 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 stop valve 69 is opened, that is, the first control valve 61, the second control valve 62 and the third control valve 63 are connected in series to the battery pack 21 and the condenser 71. The compressor 73 works, 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 to exchange heat with the refrigerant, and the coolant absorbs heat; then, the coolant flows through the battery pack 21, thereby heating the battery pack 21.

[0109] Loop three: condenser 71 →electric heater 52 →warm air core 51 →third control valve 63 →third water pump 53 →condenser 71 .

[0110] Among them, the twelfth valve port is connected to the thirteenth valve port, the third control valve 63 is connected to both ends of the heating circuit 50, and the condenser 71, the electric heater 52, the heater core 51 and the third water pump 53 are connected in series. The compressor 73 works, 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 to exchange heat with the refrigerant, and the coolant absorbs heat; then, the coolant flows through the heater core 51 to heat the passenger compartment.

[0111] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0112] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0113] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A thermal management system, characterized in that: include: Air conditioning system; a first control valve (61), one end of the first control valve (61) being connected to one end of the high-pressure heat exchange circuit (10), and another end of the first control valve (61) being connected to 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 connected to the second control valve (62); the first control valve (61) and the second control valve (62) selectively connect to 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.

2. The thermal management system according to claim 1, characterized in that: Also includes: A first multi-way tube (64), one end of the first multi-way tube (64) being connected to the other end of the battery heat exchange circuit (20), another end of the first multi-way tube (64) being selectively connected to one end of a condenser (71), and another end of the first multi-way tube (64) being connected to the second control valve (62).

3. The thermal management system (100) according to claim 2, characterized in that: Also includes: Heating circuit (50); as well as, The thermal management system (100) further comprises: 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 a heating circuit (50), and another end of the third control valve (63) being connected to another end of the heating circuit (50).

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

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

6. The thermal management system according to claim 1, characterized in that: Also includes: A first one-way valve (66), one end of the first one-way valve (66) is connected to one end of the battery heat exchange circuit (20), and the other end of the first one-way valve (66) is connected to the first control valve (61).

7. The thermal management system according to claim 6, characterized in that: Also includes: A second one-way valve (67), one end of the second one-way valve (67) 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).

8. The thermal management system according to claim 7, characterized in that: Also includes: a second multi-way tube (65), one end of the second multi-way tube (65) being connected to the other end of the first one-way valve (66), another end of the second multi-way tube (65) being connected to one end of the second one-way valve (67), and another end of the second multi-way tube (65) being connected to the first control valve (61).

9. The thermal management system according to claim 1, characterized in that: Also includes: A first branch (83), one end of the first branch (83) being in communication with the other end of the condenser (71), and the other end of the first branch (83) being in communication with the first control valve (61).

10. The thermal management system according to claim 1, characterized in that: 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) comprises: a heat exchanger (41), the air conditioning system is connected to the heat exchanger (41); and, The air conditioning system comprises: a compressor (73), an evaporator (72) and a condenser (71), wherein the compressor (73), the evaporator (72) and the condenser (71) are connected in series with each other; The heat exchanger (41) and the evaporator (72) are connected in parallel to each other and are connected in series with the condenser (71).

11. The thermal management system according to claim 1, characterized in that: 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).

12. A vehicle, characterized in that: include: The thermal management system (100) according to any one of claims 1 to 11.

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