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, the other end of the first control valve is communicated with the other end of the high-pressure heat exchange loop and one end of the radiator loop, and the other end of the first control valve is communicated with one end of the battery heat exchange loop and one end of the heat exchanger loop; the second control valve is respectively communicated with the other end of the battery heat exchange loop and the other end of the heat exchanger loop, the second control valve is further communicated with the other end of the radiator loop, and the second control valve is further communicated with the condenser of the heating loop and one end of the battery heat exchange loop; the first control valve can communicate with the second control valve, and the heat exchanger loop exchanges heat with the air conditioning system. The first control valve and the second control valve can be communicated with a radiator loop and / or a high-pressure heat exchange loop and / or a battery heat exchange loop and / or a heat exchanger loop, the architecture of the heat management system is optimized, water resistance is reduced, and energy consumption is optimized.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, 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 a radiator circuit and / or a high-pressure heat exchange circuit and / or a battery heat exchange circuit and / or a heat exchanger circuit through a first control valve and a second control valve, optimizes the architecture of the thermal management system, reduces water resistance and optimizes energy consumption.

[0005] The present invention also provides a vehicle.

[0006] A thermal management system according to an embodiment 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, another end of the first control valve is connected to the other end of the high-pressure heat exchange circuit and one end of a radiator circuit, and another end of the first control valve is connected to one end of a battery heat exchange circuit and one end of a heat exchange circuit; a second control valve, the second control valve is respectively connected to the other end of the battery heat exchange circuit and the other end of the heat exchange circuit, the second control valve is also connected to the other end of the radiator circuit, and the second control valve is also connected to a condenser of a heating circuit and one end of the battery heat exchange circuit; at least one end of the first control valve is connected to the second control valve, the first control valve and the second control valve selectively connect to one or more of the high-pressure heat exchange circuit, the battery heat exchange circuit, the radiator circuit, the heat exchange circuit and the heating circuit, and the heat exchange circuit exchanges heat with the air-conditioning system.

[0007] According to the thermal management system of an 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 water resistance and optimize energy consumption.

[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 one end of the battery heat exchange circuit and one end of the first multi-way tube, 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 system further includes: a third control valve, one end of the third control valve being connected to another end of the first multi-way pipe, another end of the third control valve being connected to one end of the heating circuit, and yet another end of the third control valve being connected to the other end of the heating circuit.

[0010] 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 another end of the first multi-way tube, another end of the second multi-way tube is connected to the other end of the condenser, and another end of the second multi-way tube is connected to the second control valve and the other end of the condenser.

[0011] According to some embodiments of the present invention, the thermal management system further includes: a stop valve, one end of which is connected to one end of the first multi-way pipe and one end of the battery heat exchange circuit, and the other end of the stop valve is connected to one end of the heat exchanger circuit and the first control valve.

[0012] 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 shut-off valve and one end of the heat exchanger, and the other end of the first branch is connected to the first control valve.

[0013] According to some embodiments of the present invention, the thermal management system further includes: a second branch, the second branch is connected between the first control valve and the second control valve, and a one-way valve is disposed on the second branch.

[0014] According to some embodiments of the present invention, the heat exchanger circuit includes: a heat exchanger, one end of the heat exchanger is connected to the first control valve or one end of the battery heat exchange circuit, the other end of the heat exchanger is connected to the second control valve, and the air-conditioning system is connected to the heat exchanger.

[0015] According to some embodiments of the present invention, the radiator circuit includes: a radiator, one end of the radiator is connected to the first 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.

[0016] The vehicle according to the second embodiment of the present invention includes: the thermal management system. The high-pressure heat exchange loop and the condenser are cooled in parallel by the second control valve to ensure the cooling requirements of the battery in the high-temperature fast charging scenario; the water source heat pump can be used in multiple layers through the heat exchanger, including ambient heat, motor active heat generation, motor waste heat, etc., to optimize energy consumption; the battery heat exchange loop and the heater core can be adjusted in proportion and decoupled by the third control valve and the first multi-way pipe.

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

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which: Figure 1 is a schematic 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 is a circuit diagram of a fifth mode of a thermal management system according to an embodiment of the present invention; Figure 7 4 is a circuit diagram of a sixth mode of a thermal management system according to an embodiment of the present invention.

[0019] 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. One-way valve; 67. Stop valve; 68. First branch; 69. Second branch; 71. Condenser; 72. Evaporator; 73. Compressor; 81. Overflow tank; 82. Four-way pipe. DETAILED DESCRIPTION

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

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

[0022] 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 .

[0023] The thermal management system 100 also 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, another end of the first control valve 61 is connected to the other end of the high-pressure heat exchange loop 10 and one end of the radiator loop 30, and another end of the first control valve 61 is connected to one end of the battery heat exchange loop 20 and one end of the heat exchanger loop 40.

[0024] 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 .

[0025] like Figure 1 As shown, the first valve port is connected to one end of the high-pressure heat exchange circuit 10, the second valve port is connected to one end of the battery heat exchange circuit 20 and one end of the heat exchanger circuit 40, and the third valve port is connected to the other end of the high-pressure heat exchange circuit 10 and one end of the radiator circuit 30.

[0026] The thermal management system 100 also includes: a second control valve 62, which is respectively connected to the other end of the battery heat exchange circuit 20 and the other end of the heat exchanger circuit 40, and the second control valve 62 is also connected to the other end of the radiator circuit 30. The second control valve 62 is also connected to the condenser 71 of the heating circuit 50 and one end of the battery heat exchange circuit 20.

[0027] The second control valve 62 may include: a fifth valve port, a sixth valve port, a seventh valve port, an eighth valve port and a ninth valve port. The second control valve 62 may arbitrarily connect two or more of the fifth valve port, the sixth valve port, the seventh valve port, the eighth valve port and the ninth 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 .

[0028] The fifth valve port is connected to the other end of the radiator circuit 30, the sixth valve port is connected to the other end of the heat exchanger circuit 40, the seventh valve port is connected to the other end of the battery heat exchange circuit 20, and the eighth valve port can be connected to the condenser 71 of the heating circuit 50 and one end of the battery heat exchange circuit 20.

[0029] At least one end of the first control valve 61 is in communication with the second control valve 62 , that is, the fourth valve port may be in communication with the ninth valve port of the second control valve 62 .

[0030] 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, the heat exchanger circuit 40 and the heating circuit 50, and the heat exchanger circuit 40 exchanges heat with the air conditioning system.

[0031] 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, that is, the first valve port and the fourth valve port are connected, and the ninth valve port and the fifth valve port are connected, so that the radiator circuit 30 and the high-pressure heat exchange circuit 10 form a closed loop, 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.

[0032] like Figure 4As shown, the first control valve 61 and the second control valve 62 can be connected in series to the radiator circuit 30, the high-pressure heat exchange circuit 10 and the battery heat exchange circuit 20, that is, the first valve port is connected to the fourth valve port, the ninth valve port is connected to the seventh valve port, and the eighth valve port is connected to the fifth valve port, so that the radiator circuit 30, 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 battery pack 21. When the coolant flows through the radiator circuit 30, the heat is dissipated to the outside, thereby realizing the cooling of the high-voltage device and the passive cooling of the battery pack 21.

[0033] like Figure 2 As shown, the second control valve 62 is connected in series with the battery heat exchange loop 20 and the heat exchanger loop 40, the sixth valve port and the seventh valve port are connected, and the heat exchanger 41 in the heat exchanger loop 40 can absorb the heat of the battery pack 21 to achieve active cooling of the battery pack 21.

[0034] like Figure 3 As shown, the first control valve 61 and the second control valve 62 can also be connected in series to the radiator circuit 30 and the condenser 71 . When the condenser 71 and the radiator circuit 30 are connected in series, the heat of the condenser 71 can be dissipated to the outside through the radiator 31 .

[0035] 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.

[0036] like Figure 3 As shown, the thermal management system 100 further includes: a first multi-way pipe 64, one end of the first multi-way pipe 64 is connected to one end of the battery heat exchange loop 20, another end of the first multi-way pipe 64 is selectively connected to one end of the condenser 71, and another end of the first multi-way pipe 64 is connected to the second control valve 62 and the other end of the condenser 71. In other words, the first multi-way pipe 64 can connect one end of the battery heat exchange loop 20 with one end of the condenser 71, and the other end of the condenser 71 is connected to the eighth valve port of the second control valve 62.

[0037] Among them, the second control valve 62 can be connected in series with the battery heat exchange circuit 20 and the condenser 71. The heat of the air-conditioning system is released to the coolant in the condenser 71. When the coolant flows through the battery heat exchange circuit 20, the battery pack 21 can be heated.

[0038] Combination Figure 1-Figure 7 As shown, 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 may include: a tenth valve port, an eleventh valve port and a twelfth valve port, and the second control valve 62 may arbitrarily connect two or three of the tenth valve port, the eleventh valve port and the twelfth valve port. Figure 1-Figure 7 The "k" in the eleventh valve port is Figure 1-Figure 7 The "m" in the 12th valve port is Figure 1-Figure 7 The "n" in .

[0040] When the eleventh valve port and the twelfth 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 tenth valve port and the eleventh valve port are connected, one end of the condenser 71 can be connected to the battery heat exchange circuit 20 or the first control valve 61, so that the battery pack 21 can be heated or the condenser 71 can be cooled.

[0042] 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. For example, the second valve port is connected to the third valve port, the tenth valve port is connected to the eleventh valve port, and the eighth valve port is connected to the fifth valve port. Then, the radiator circuit 30, the battery heat exchange circuit 20 and the condenser 71 are connected in series, 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 that the battery pack 21 and the condenser 71 are cooled.

[0043] 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 another end of the first multi-way pipe 64, another end of the second multi-way pipe 65 is connected to another end of the condenser 71, and another end of the second multi-way pipe 65 is connected to the second control valve 62. Specifically, the second multi-way pipe 65 can connect one end of the battery heat exchange circuit 20 with the eighth valve port of the second control valve 62, so that the battery heat exchange circuit 20, the high-pressure heat exchange circuit 10 and the radiator circuit 30 can be connected in series to cool the high-pressure device and the battery pack 21; the second control valve 62 can also connect the other end of the condenser 71 with the eighth valve port, so that the condenser 71 and the radiator circuit 30 can be connected in series to cool the condenser 71.

[0044] According to some embodiments of the present invention, the thermal management system 100 also includes: a stop valve 67, one end of the stop valve 67 is connected to one end of the first multi-way pipe 64 and one end of the battery heat exchange circuit 20, and the other end of the stop valve 67 is connected to the other end of the heat exchanger circuit 40 and the first control valve 61.

[0045] like Figure 4 and Figure 5 As shown, when the shut-off valve 67 is closed, the battery heat exchange circuit 20 is not connected to the heat exchanger circuit 40 .

[0046] When the stop valve 67 is opened, one end of the battery heat exchange loop 20 is connected to one end of the heat exchanger loop 40 and the first control valve 61 .

[0047] At this time, if the second control valve 62 can be connected in series with the other end of the battery heat exchange loop 20 and the other end of the heat exchange loop 40 (such as Figure 2 As shown), the sixth valve port and the seventh valve port are connected, and the battery heat exchange and heat exchanger circuit 40 are connected in series. The heat exchanger 41 in the heat exchanger circuit 40 can absorb the heat of the battery pack 21 in the battery heat exchange circuit 20. The heat exchanger 41 transfers the heat to the air-conditioning system, and the heat is used for heating the passenger compartment through the condenser 71 or cooling through the radiator 31.

[0048] Or, if Figure 4 and Figure 7 As shown, the second valve port is connected to the third valve port, the seventh valve port is connected to the ninth 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, and the waste heat generated by the high-pressure device in the high-pressure heat exchange circuit 10 is used to heat the battery pack 21.

[0049] like Figure 3 As shown, when the stop valve 67 is opened, the stop valve 67 and the first three-way pipe can connect the second valve port and one end of the condenser 71, the second valve port and the third valve port of the first control valve 61 are connected, and the eighth valve port and the fifth valve port of the second control valve 62 are connected, thereby connecting the radiator circuit 30 and the condenser 71 in series to achieve cooling of the condenser 71.

[0050] Furthermore, the thermal management system 100 further includes: a first branch 68, one end of the first branch 68 is connected to one end of the heat exchanger circuit 40 and the other end of the stop valve 67, and the other end of the first branch 68 is connected to the first control valve 61. Figure 5 and Figure 6 As shown, the first branch 68 can connect the first control valve 61 and one end of the heat exchanger loop 40. The heat exchanger loop 40 can be connected in series with 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 device. When the condenser 71 is connected in series with the battery heat exchange loop 20, the heat can be used for heating the passenger compartment or heating the battery pack 21.

[0051] Alternatively, the first branch 68 may also be connected to the first control valve 61 and one end of the battery heat exchange loop 20, such as Figure 4 As shown, the first branch 68 can be connected in series with the radiator circuit 30 and the battery heat exchange circuit 20 to achieve cooling of the battery pack 21; Figure 7 As shown, the first branch 68 can be connected in series with the battery heat exchange circuit 20 and the high-pressure heat exchange circuit 10. 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.

[0052] Or, if Figure 3 and Figure 4 As shown, the first branch 68 can communicate with the first control valve 61 and one end of the condenser 71 , and the radiator circuit 30 and the condenser 71 are connected in series to achieve cooling of the condenser 71 .

[0053] like Figure 1 As shown, the thermal management system 100 further includes: a second branch 69, the second branch 69 is connected between the first control valve 61 and the second control valve 62, and a one-way valve 66 is arranged on the second branch 69. Specifically, one end of the second branch 69 is connected to the fourth valve port, and the other end of the second branch 69 is connected to the ninth valve port, and the second branch 69 is connected to the fourth valve port and the ninth valve port; and the one-way valve 66 is arranged on the second branch 69, so that the coolant can only flow from the fourth valve port to the ninth valve port.

[0054] And, the high-pressure heat exchange loop 10 includes: a motor 11, an electric control 12 and a first water pump 13, and the motor 11, the electric control 12 and the first water pump 13 are connected in series. Specifically, the high-pressure components in the high-pressure heat exchange loop 10 can be the motor 11, the electric control 12, etc., and coolant flows in the high-pressure heat exchange loop 10. Driven by the first water pump 13, the coolant flows from the high-pressure heat exchange loop 10 to the heat exchanger 41, and then flows from the heat exchanger 41 to the high-pressure heat exchange loop 10, so as to realize the circulation of the coolant.

[0055] The heat exchanger circuit 40 includes: a heat exchanger 41, one end of the heat exchanger 41 is connected to the first control valve 61 or one end of the battery heat exchange circuit 20, 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 in the heat exchanger 41, so that the refrigerant can absorb the heat of the battery heat exchange circuit 20 or the high-pressure heat exchange circuit 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 .

[0056] 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.

[0057] 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, wherein 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, thereby making reasonable use of the heat of the air conditioning system.

[0058] 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.

[0059] 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 heat of the condenser 71 is insufficient, the electric heater 52 can play a role in heating. The electric heater 52 can be a PTC heater.

[0060] The heating circuit 50 further includes a third water pump 53, which is disposed between one end of the condenser 71 and the third control valve 63, and is connected in series with the condenser 71. The third water pump 53 can realize the circulation of the coolant.

[0061] And, the radiator circuit 30 includes: a radiator 31, one end of the radiator 31 is connected to the first control valve 61 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 radiator 31 is used to dissipate the heat in the coolant to the outside; if the temperature of the coolant is lower than the ambient temperature, the coolant absorbs ambient heat at the radiator 31.

[0062] 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.

[0063] 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 third 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 third 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.

[0064] 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 67, 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 waste 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 and the first multi-way pipe 64.

[0065] 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.

[0066] 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 → check valve 66 → second control valve 62 → radiator 31 .

[0067] Among them, the first valve port is connected to the fourth 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 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.

[0068] Loop 2: battery pack 21 → shut-off valve 67 → heat exchanger 41 → second control valve 62 → second water pump 22 → battery pack 21 .

[0069] Among them, the sixth valve port is connected to the seventh valve port, and the battery heat exchange circuit 20 and the heat exchanger 41 are connected in series through 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. 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.

[0070] Circuit three: condenser 71 →electric heater 52 →warm air core 51 →second control valve 62 →third water pump 53 →condenser 71 .

[0071] Among them, the eleventh valve port is connected to the twelfth 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.

[0072] 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 → check valve 66 → second control valve 62 → radiator 31 .

[0073] Among them, the first valve port is connected to the fourth 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 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.

[0074] Loop 2: radiator 31 → first control valve 61 → stop valve 67 → third control valve 63 → third water pump 53 → condenser 71 → electric heater 52 → second control valve 62 → radiator 31 .

[0075] Among them, the third valve port is connected to the second valve port, the stop valve 67 is opened, the fifth valve port is connected to the eighth valve port, and the tenth valve port is connected to the eleventh valve port, that is, the radiator 31 and the condenser 71 are connected in series, and the coolant flows between the condenser 71 and the radiator 31, absorbs the heat of the air-conditioning system at the condenser 71, and dissipates it to the outside through the radiator 31, thereby cooling the condenser 71.

[0076] Circuit three: condenser 71 →electric heater 52 →warm air core 51 →second control valve 62 →third water pump 53 →condenser 71 .

[0077] Among them, the eleventh valve port is connected to the twelfth 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.

[0078] 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 → check valve 66 → second control valve 62 → second water pump 22 → battery pack 21 → second control valve 62 → radiator 31 .

[0079] Among them, the first valve port is connected to the fourth valve port, the ninth valve port is connected to the seventh valve port, and the fifth valve port is connected to the eighth valve port, 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 battery heat exchange circuit 20, and the waste heat generated by the motor 11 and the heat of the battery pack 21 are dissipated to the outside through the radiator 31, thereby cooling the motor 11 and the battery pack 21.

[0080] Loop 2: radiator 31 → first control valve 61 → stop valve 67 → third control valve 63 → third water pump 53 → condenser 71 → electric heater 52 → second control valve 62 → radiator 31 .

[0081] Among them, the second valve port is connected to the third valve port, the stop valve 67 is opened, the tenth valve port is connected to the eleventh valve port, and the eighth valve port is connected to the fifth 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 condenser 71 to achieve cooling of the condenser 71.

[0082] Circuit three: condenser 71 →electric heater 52 →warm air core 51 →second control valve 62 →third water pump 53 →condenser 71 .

[0083] Among them, the eleventh valve port is connected to the twelfth 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 user can also turn on the electric heater 52 according to actual needs to assist in heating the passenger compartment.

[0084] Reference Figure 5 As shown, the fourth 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 → heat exchanger 41 → second control valve 62 → radiator 31 .

[0085] Among them, the first valve port and the second valve port are connected, and the fifth valve port and the sixth valve port are connected. 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, and the coolant absorbs the ambient heat at the radiator 31, and the coolant absorbs the heat of the motor 11, and transmits the absorbed heat to the refrigerant circulating in the air-conditioning system through the heat exchanger 41.

[0086] Loop 2: condenser 71 → electric heater 52 → second control valve 62 → second water pump 22 → battery pack 21 → third control valve 63 → third water pump 53 → condenser 71 .

[0087] Among them, the seventh valve port is connected with the eighth valve port, the tenth valve port is connected with the eleventh valve port, the first control valve 61 and the second control valve 62 are connected in series with the battery pack 21 and the condenser 71, the heat exchanger 41 absorbs the heat of the motor 11 and the ambient heat and releases it to the air-conditioning system, and the condenser 71 can use this part of the heat to heat the battery pack 21, thereby improving energy utilization.

[0088] Circuit three: condenser 71 →electric heater 52 →warm air core 51 →third control valve 63 →third water pump 53 →condenser 71 .

[0089] 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 heat exchanger 41 absorbs the heat of the motor 11 and the ambient heat and releases it to the air-conditioning system. The condenser 71 can transfer this part of the heat to the heating circuit 50 for heating the passenger compartment and improving energy utilization.

[0090] The user can also turn on the electric heater 52 according to actual needs to assist in heating the passenger compartment.

[0091] Reference Figure 6 As shown, the fifth 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 control valve 62 → heat exchanger 41 → second control valve 62 → first water pump 13 .

[0092] Among them, the first valve port is connected to the fourth valve port, the second valve port is connected to the third valve port, and the ninth 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.

[0093] 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 heat absorbed by the refrigerant at the heat exchanger 41 is transmitted to the condenser 71.

[0094] 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.

[0095] Loop 2: condenser 71 → electric heater 52 → second control valve 62 → second water pump 22 → battery pack 21 → third control valve 63 → third water pump 53 → condenser 71 .

[0096] Among them, the seventh valve port is connected to the eighth valve port, the tenth valve port is connected to the eleventh valve port, and the first control valve 61 and the second control valve 62 are connected in series to the battery pack 21 and the condenser 71 .

[0097] When the heat exchanger 41 is working, the refrigerant absorbs the heat of the motor 11 and uses this heat at the condenser 71 to heat the battery pack 21, thereby improving energy utilization.

[0098] 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 73; 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.

[0099] Circuit three: condenser 71 →electric heater 52 →warm air core 51 →third control valve 63 →third water pump 53 →condenser 71 .

[0100] Among them, the eleventh valve port is connected to the twelfth 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.

[0101] 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.

[0102] 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 73; 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.

[0103] The user can also turn on the electric heater 52 according to actual needs to assist in heating the passenger compartment.

[0104] 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 → check valve 66 → second control valve 62 → second water pump 22 → battery pack 21 → stop valve 67 → second control valve 62 → first water pump 13 .

[0105] Among them, the first valve port is connected to the fourth valve port, the ninth valve port is connected to the seventh valve port, the stop valve 67 is opened, and the second valve port is connected to the third valve port, that is, 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.

[0106] Loop 2: condenser 71 → second control valve 62 → second water pump 22 → battery pack 21 → third control valve 63 → third water pump 53 → condenser 71 .

[0107] Among them, the seventh valve port is connected to the eighth valve port, and the tenth valve port is connected to the eleventh valve port, that is, the first control valve 61 and the second control valve 62 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; then, the coolant flows through the battery pack 21, thereby heating the battery pack 21.

[0108] Loop three: condenser 71 →electric heater 52 →warm air core 51 →third control valve 63 →third water pump 53 →condenser 71 .

[0109] Among them, the eleventh valve port is connected to the twelfth 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; then, the coolant flows through the heater core 51 to heat the passenger compartment.

[0110] 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.

[0111] 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.

[0112] 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 in communication with one end of the high-pressure heat exchange circuit (10), another end of the first control valve (61) being in communication with the other end of the high-pressure heat exchange circuit (10) and one end of the radiator circuit (30), and another end of the first control valve (61) being in communication with one end of the battery heat exchange circuit (20) and one end of the heat exchange circuit (40); a second control valve (62), the second control valve (62) being connected to the other end of the battery heat exchange circuit (20) and the other end of the heat exchanger circuit (40), respectively; the second control valve (62) is also connected to the other end of the radiator circuit (30); the second control valve (62) is also connected to the condenser (71) of the heating circuit (50) and one end of the battery heat exchange circuit (20); At least one end of the first control valve (61) is connected to the second control valve (62), and 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), the heat exchange circuit (40) and the heating circuit (50), 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 one end of the battery heat exchange circuit (20), another end of the first multi-way tube (64) being selectively connected to one end of the condenser (71), and another end of the first multi-way tube (64) being connected to the second control valve (62) and the other end of the condenser (71).

3. The thermal management system according to claim 2, characterized in that: 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 the heating circuit (50), and another end of the third control valve (63) being connected to the other end of the heating circuit (50).

4. The thermal management system according to claim 2, characterized in that: Also includes: a second multi-way tube (65), one end of the second multi-way tube (65) being connected to another end of the first multi-way tube (64), another end of the second multi-way tube (65) being connected to another end of the condenser (71), and another end of the second multi-way tube (65) being connected to the second control valve (62).

5. The thermal management system according to claim 2, characterized in that: Also includes: a stop valve (67), one end of the stop valve (67) being in communication with one end of the first multi-way pipe (64) and one end of the battery heat exchange circuit (20), and the other end of the stop valve (67) being in communication with one end of the heat exchanger circuit (40) and the first control valve (61).

6. The thermal management system according to claim 5, characterized in that: Also includes: A first branch (68), one end of the first branch (68) being in communication with the other end of the stop valve (67) and one end of the heat exchanger (41), and the other end of the first branch (68) being in communication with the first control valve (61).

7. The thermal management system according to claim 1, characterized in that: Also includes: A second branch (69), the second branch (69) is connected between the first control valve (61) and the second control valve (62), and a one-way valve (66) is provided on the second branch (69).

8. The thermal management system according to claim 1, characterized in that: The heat exchanger circuit (40) comprises: a heat exchanger (41), one end of the heat exchanger (41) being in communication with a first control valve (61) or one end of the battery heat exchange circuit (20), the other end of the heat exchanger (41) being in communication with the second control valve (62), and the air conditioning system being in communication with the heat exchanger (41).

9. 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 first control valve (61) 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).

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

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