Thermal management system

Abstract

The heat management system comprises a multi-way valve, a first flow path, a second flow path, a third flow path and a fourth flow path, the multi-way valve is provided with a first valve port part, a second valve port part, a third valve port part, a fourth valve port part, a fifth valve port part, a sixth valve port part, a seventh valve port part and an eighth valve port part, and the first flow path is connected with the first valve port part and the fifth valve port part; the second flow path is connected with the second valve port part and the seventh valve port part, the third flow path is connected with the third valve port part and the sixth valve port part, and the fourth flow path is connected with the fourth valve port part and the eighth valve port part; the heat management system comprises a first pump, a first heat exchanger, a radiator, an electric drive heat exchange part, a second pump, a second heat exchanger and a battery heat exchange part, the radiator is connected with the second flow path, the first pump, the first heat exchanger and the electric drive heat exchange part are all connected with the first flow path, and the battery heat exchange part is connected with the third flow path. The second heat exchanger and the second pump are both connected with the fourth flow path. The thermal management system can be simplified.

Description

Technical Field

[0001] The present application relates to the field of automobile thermal management technology, and in particular to a thermal management system. Background Art

[0002] Thermal management is the management of heat within the vehicle components or the passenger compartment, or both.

[0003] In the related art, the thermal management system includes a reagent side circuit and a water side circuit. The water side circuit is generally controlled by three three-way valves and one four-way valve to achieve thermal management of automotive motors, batteries and other components. There are many valves and the thermal management system is relatively complex. Utility Model Content

[0004] The object of the present application is to provide a thermal management system, comprising a multi-way valve, a first flow path, a second flow path, a third flow path and a fourth flow path, the multi-way valve having a first valve port portion, a second valve port portion, a third valve port portion, a fourth valve port portion, a fifth valve port portion, a sixth valve port portion, a seventh valve port portion and an eighth valve port portion, the first flow path being connected to the first valve port portion and the fifth valve port portion, the second flow path being connected to the second valve port portion and the seventh valve port portion, the third flow path being connected to the third valve port portion and the sixth valve port portion, and the fourth flow path being connected to the fourth valve port portion and the eighth valve port portion;

[0005] The thermal management system includes a first pump, a first heat exchanger, a radiator, an electric drive heat exchange unit, a second pump, a second heat exchanger and a battery heat exchange unit. The radiator is connected to the second flow path, the first pump, the first heat exchanger and the electric drive heat exchange unit are all connected to the first flow path, the battery heat exchange unit is connected to the third flow path, and the second heat exchanger and the second pump are both connected to the fourth flow path.

[0006] In the present application, the first flow path is connected to the first valve port portion and the fifth valve port portion, the second flow path is connected to the second valve port portion and the seventh valve port portion, the third flow path is connected to the third valve port portion and the sixth valve port portion, the fourth flow path is connected to the fourth valve port portion and the eighth valve port portion, the radiator is connected to the second flow path, the first pump, the first heat exchanger and the electric drive heat exchange portion are all connected to the first flow path, the battery heat exchange portion is connected to the third flow path, and the second heat exchanger and the second pump are both connected to the fourth flow path, thereby simplifying the thermal management system. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a schematic diagram of the thermal management system of the present application.

[0008] Figure 2 yes Figure 1 Schematic diagram of the multi-way valve, the first flow path, the second flow path, the third flow path and the fourth flow path.

[0009] Figure 3 yes Figure 1 Schematic diagram of the refrigerant circuit.

[0010] Figure 4 yes Figure 1 Schematic diagram of the first state, in which the waste heat from the battery and electric drive components heats the interior of the vehicle.

[0011] Figure 5 yes Figure 1 Schematic diagram of the first sub-state, the state of vehicle interior cooling and battery cooling.

[0012] Figure 6 yes Figure 1 Schematic diagram of the second sub-state, the state of radiator deicing.

[0013] Figure 7 yes Figure 1 Schematic diagram of the third sub-state, the state of interior heating and battery heating.

[0014] Figure 8 yes Figure 1 Schematic diagram of the fourth sub-state, which is the state of dehumidification and heating in the car and battery heating.

[0015] Fig. 9 yes Figure 1 Schematic diagram of the fifth sub-state, another state of interior heating and battery heating.

[0016] Fig.10 yes Figure 1 Schematic diagram of the fourth state, in which the vehicle interior is cooled and the battery dissipates heat at low temperature. DETAILED DESCRIPTION

[0017] The exemplary embodiments of the present application are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments and implementations can be combined with each other.

[0018] like Figures 1 to 10 A thermal management system that complies with the present application is shown. Figure 1 as well as Figure 2 The thermal management system includes a multi-way valve 5, a first flow path 1, a second flow path 2, a third flow path 3 and a fourth flow path 4. The multi-way valve 5 has a first valve port portion 51, a second valve port portion 52, a third valve port portion 53, a fourth valve port portion 54, a fifth valve port portion 55, a sixth valve port portion 56, a seventh valve port portion 57 and an eighth valve port portion 58. The first flow path 1 is connected to the first valve port portion 51 and the fifth valve port portion 55, the second flow path 2 is connected to the second valve port portion 52 and the seventh valve port portion 57, the third flow path 3 is connected to the third valve port portion 53 and the sixth valve port portion 56, and the fourth flow path 4 is connected to the fourth valve port portion 54 and the eighth valve port portion 58;

[0019] Reference Figure 1 as well as Figure 2 The thermal management system includes a first pump 11, a first heat exchanger 12, a radiator 23, an electric drive heat exchange unit 13, a second pump 42, a second heat exchanger 41 and a battery heat exchange unit 31. The radiator 23 is connected to the second flow path 2, the first pump 11, the first heat exchanger 12 and the electric drive heat exchange unit 13 are all connected to the first flow path 1, the battery heat exchange unit 31 is connected to the third flow path 3, and the second heat exchanger 41 and the second pump 42 are both connected to the fourth flow path 4.

[0020] By replacing one four-way valve and two three-way valves 18 with a multi-way valve 5, compared with the solution in the related art that needs to control one four-way valve and two three-way valves 18, the solution of controlling the multi-way valve 5 is more convenient for writing the control program; the setting of multiple valve components easily leads to multiple and complex flow paths and many interfaces. The setting of the multi-way valve 5 can reduce the flow paths, simplify the thermal management system, reduce the number of interfaces accordingly, and increase the degree of integration.

[0021] In some embodiments, the first heat exchanger 12 is a water-cooled heat exchanger, and further, the first heat exchanger 12 is a condenser. In some embodiments, the multi-way valve 5 is an eight-way valve or a nine-way valve. In some embodiments, the radiator 23 is an external radiator 23, and further, the radiator 23 is a front-end module radiator 23. In some embodiments, the electric drive heat exchange unit 13 is used to exchange heat for the electric drive component, and the electric drive component includes a motor or an electric control board or a drive board, etc. In some embodiments, the second heat exchanger 41 is a water-cooled heat exchanger, and further, the second heat exchanger 41 is an evaporator. In some embodiments, the battery heat exchange unit 31 is used to exchange heat for the battery, and specifically, the battery heat exchange unit 31 includes a water-cooled plate.

[0022] In some embodiments, reference Figure 1 as well as Figure 2 The multi-way valve 5 includes a ninth valve port portion 59, the thermal management system includes a connecting path 6, the second flow path 2 includes a first sub-flow path 21 and a second sub-flow path 22, the second flow path 2 has a connecting port portion 24, the first sub-flow path 21 is connected to the seventh valve port portion 57, the second sub-flow path 22 is connected to the second valve port portion 52, the first sub-flow path 21, the second sub-flow path 22 and the connecting path 6 are all connected to the connecting port portion 24, the connecting path 6 is connected to the ninth valve port portion 59, and the radiator 23 is connected to the first sub-flow path 21.

[0023] Furthermore, the seventh valve port portion 57 is an inlet portion, and the second valve port portion 52 is an outlet portion.

[0024] In some embodiments, reference Figure 1 as well as Figure 3The thermal management system includes a refrigerant circuit 7, the thermal management system includes a compressor 71 and a throttling device 72, the first heat exchanger 12 includes a first heat exchange part 121 and a second heat exchange part 122, the second heat exchanger 41 includes a third heat exchange part 411 and a fourth heat exchange part 412, the first heat exchange part 121, the compressor 71, the throttling device 72, and the third heat exchange part 411 are all connected to the refrigerant circuit 7, the second heat exchange part 122 is connected to the first flow path 1, and the fourth heat exchange part 412 is connected to the fourth flow path 4.

[0025] Specifically, refer to Figure 1 as well as Figure 3 The throttling element 72 may be an electronic expansion valve or a capillary tube, etc. The first heat exchange part 121 and the second heat exchange part 122 exchange heat, and the third heat exchange part 411 and the fourth heat exchange part 412 exchange heat.

[0026] In some embodiments, reference Figure 1 as well as Figure 3 The thermal management system includes a first in-vehicle heat exchanger 73 and a second in-vehicle heat exchanger 74. The first in-vehicle heat exchanger 73 and the second in-vehicle heat exchanger 74 are both connected to the refrigerant circuit 7, and the compressor 71 is connected between the first in-vehicle heat exchanger 73 and the second in-vehicle heat exchanger 74. The compressor 71 is connected between the first heat exchange part 121 and the third heat exchange part 411.

[0027] Specifically, refer to Figure 1 as well as Figure 3 The first in-vehicle heat exchanger 73 is connected to the outlet of the compressor 71 , and the second in-vehicle heat exchanger 74 is connected to the inlet of the compressor 71 .

[0028] In some embodiments, reference Figure 1 as well as Figure 3 The refrigerant circuit 7 includes a first main circuit 75, a first branch circuit 76, a second branch circuit 77, and a second main circuit 78. The throttling device 72 includes a first expansion valve 721 and a second expansion valve 722. The first main circuit 75 is connected to the outlet of the compressor 71, the first branch circuit 76 and the second branch circuit 77 are both connected to the first main circuit 75, the first branch circuit 76 and the second branch circuit 77 are both connected to the second main circuit 78, and the second main circuit 78 is connected to the inlet of the compressor 71; the first in-vehicle heat exchanger 73 and the first heat exchange part 121 are both connected to the first main circuit 75, the first expansion valve 721 and the second in-vehicle heat exchanger 74 are both connected to the first branch circuit 76, the second expansion valve 722 and the third heat exchange part 411 are both connected to the second branch circuit 77, and the second in-vehicle heat exchanger 74 is connected in parallel with the third heat exchange part 411.

[0029] The above scheme can heat the first in-vehicle heat exchanger 73 through the heat of the compressor 71, thereby heating the interior of the vehicle, and control the connectivity between the first branch 76, the second branch 77 and the first main 75 through the first expansion valve 721 and the second expansion valve 722, thereby controlling the heating and dehumidification or cooling or heating in the vehicle, thereby controlling different states in the vehicle.

[0030] In some embodiments, reference Figure 1 as well as Figure 3 The thermal management system includes a bypass passage 8 and a third expansion valve 81. The first main passage 75 includes a first sub-main passage 751 and a second sub-main passage 752. The first sub-main passage 751 is connected to the inlet of the compressor 71. The first sub-main passage 751, the second sub-main passage 752 and the bypass passage 8 are all connected. The first in-vehicle heat exchanger 73 and the first heat exchange unit 121 are all connected to the second sub-main passage 752. The second main passage 78 is connected to the bypass passage 8. By setting the bypass passage 8, hot gas bypass is performed, and the power consumption of the compressor 71 can be used for heating the first in-vehicle heat exchanger 73.

[0031] In some embodiments, reference Figure 1 as well as Figure 3 The thermal management system includes an intermediate heat exchanger 82, and the intermediate heat exchanger 82 includes a first intermediate heat exchange part 821 and a second intermediate heat exchange part 822. The first intermediate heat exchange part 821 is connected to the first main circuit 75, and the first intermediate heat exchange part 821 is connected between the first heat exchange part 121 and the first branch circuit 76. The second intermediate heat exchange part 822 is connected to the second main circuit 78, and the second intermediate heat exchange part 822 is connected between the compressor 71 and the first branch circuit 76. The first intermediate heat exchange part 821 and the second intermediate heat exchange part 822 exchange heat with each other.

[0032] In some embodiments, reference Figure 4 , the thermal management system has a first state, in which the valve port of the first valve port section 51 is connected to the valve port of the third valve port section 53, the valve port of the fifth valve port section 55 is connected to the valve port of the ninth valve port section 59, the valve port of the second valve port section 52 is connected to the valve port of the fourth valve port section 54, the valve port of the sixth valve port section 56 is connected to the valve port of the eighth valve port section 58, the valve port of the seventh valve port section 57 is blocked from the flow channel of the first sub-flow path 21, the connecting path 6 is blocked from the first sub-flow path 21, and the connecting path 6 is connected to the second sub-flow path 22. Specifically, the valve ports of the first, second, third, fourth, fifth, sixth, and eighth valve port sections 58 are all blocked from the valve port of the seventh valve port section 57, and the valve port of the seventh valve port section 57 is also blocked from the valve port of the ninth valve port section 59.

[0033] Specifically, refer to Figure 4The valve port of the first valve port portion 51 and the valve port of the third valve port portion 53 are both connected to the flow channel of the first flow path 1 and the flow channel of the third flow path 3. Further, the valve port of the first valve port portion 51 and the valve port of the third valve port portion 53 are both connected to the flow channel in the first main path 14 and the flow channel of the third flow path 3.

[0034] Specifically, refer to Figure 4 The valve port of the fifth valve port portion 55 and the valve port of the ninth valve port portion 59 are both connected to the flow channel of the first flow path 1 and the flow channel in the connecting path 6. Further, the valve port of the fifth valve port portion 55 and the valve port of the ninth valve port portion 59 are both connected to the flow channel in the second main path 17 and the flow channel in the connecting path 6.

[0035] Specifically, refer to Figure 4 The valve port of the second valve port portion 52 and the valve port of the fourth valve port portion 54 are both connected to the flow channel of the second flow path 2 and the flow channel of the fourth flow path 4. Further, the valve port of the second valve port portion 52 and the valve port of the fourth valve port portion 54 are both connected to the flow channel of the second sub-flow path 22 and the flow channel of the fourth flow path 4.

[0036] Specifically, refer to Figure 4 The valve port of the sixth valve port portion 56 and the valve port of the eighth valve port portion 58 are both connected to the flow channel of the third flow channel 3 and the flow channel of the fourth flow channel 4 .

[0037] The thermal management system includes a refrigerant circuit 7. Through the setting of the ninth valve port 59, the coolant does not pass through the radiator 23, so that the thermal management system can realize that most of the heat absorbed by the battery heat exchange part 31 and the electric drive heat exchange part 13 is exchanged with the second heat exchanger 41, and the waste heat of the battery and the electric drive component is recovered to the refrigerant circuit 7, and the first in-vehicle heat exchanger 73 on the refrigerant circuit 7 is used to heat the interior of the vehicle, which is green and energy-saving.

[0038] In some embodiments, reference Figure 1 as well as Figure 4 The first flow path 1 includes a first main path 14, a first branch path 15, a second branch path 16, a second main path 17 and a three-way valve 18. The first main path 14 is connected to the first valve port 51. The first branch path 15 and the second branch path 16 are both connected to the first main path 14. The first branch path 15, the second branch path 16 and the second main path 17 are respectively connected to the three valve ports of the three-way valve 18. The second main path 17 is connected to the fifth valve port 55. The electric drive heat exchange part 13 is connected to the first branch path 15. The first heat exchanger 12 is connected to the second branch path 16. The first pump 11 is connected to the first main path 14. The first heat exchanger 12 is connected in parallel with the electric drive heat exchange part 13. Further, the first heat exchanger 12 includes a first heat exchange part 121 and a second heat exchange part 122. The second heat exchange part 122 is connected to the second branch path 16.

[0039] In some embodiments, reference Figure 1 as well as Figure 4 The thermal management system has a first state. In the first state, the second branch 16 is blocked from the first main path 14 , and the second main path 17 is blocked from the second branch 16 .

[0040] Specifically, the three-way valve 18 is a proportional three-way valve 18, which can adjust the flow rates in the first branch 15, the second branch 16 and the second main path 17; through the first main path 14, the first branch 15, the second branch 16, the second main path 17 and the three-way valve 18, the first heat exchanger 12 is arranged in parallel with the electric drive heat exchange part 13, and the coolant does not pass through the first heat exchanger 12, and the first heat exchanger 12 does not exchange heat with the refrigerant flow path, so that most of the heat generated by the motor and the battery enters the vehicle through the first in-vehicle heat exchanger 73 to heat the interior of the vehicle, thereby improving the heating efficiency of the interior of the vehicle.

[0041] In some embodiments, in the first state, the third expansion valve 81 blocks the bypass passage 8 from the first main passage 75, and the bypass passage 8 from the second main passage 78, the first expansion valve 721 blocks the first branch passage 76 from the first main passage 75, and the first branch passage 76 from the second main passage 78, the flow passage of the first main passage 75, the flow passage of the second branch passage 77, and the flow passage of the second main passage 78 are connected, so that the second heat exchanger 41 absorbs the waste heat of the battery and the motor to heat the interior of the vehicle.

[0042] In some embodiments, reference Figure 1 as well as Figure 5 The thermal management system has a second state, and the second state includes a first sub-state and a second sub-state. In the first sub-state, the valve port of the first valve port portion 51 is connected to the valve port of the second valve port portion 52, the valve port of the fifth valve port portion 55 is connected to the valve port of the seventh valve port portion 57, the valve port of the sixth valve port portion 56 is connected to the valve port of the eighth valve port portion 58, and the valve port of the third valve port portion 53 is connected to the valve port of the fourth valve port portion 54.

[0043] Specifically, refer to Figure 1 as well as Figure 5The valve port of the first valve port portion 51 and the valve port of the second valve port portion 52 are both in communication with the flow passage of the second flow path 2 and the flow passage of the first flow path 1. Further, the valve port of the first valve port portion 51 and the valve port of the second valve port portion 52 are both in communication with the flow passage of the second sub-flow path 22 and the flow passage in the first main path 14. Specifically, the valve port of the fifth valve port portion 55 and the valve port of the seventh valve port portion 57 are both in communication with the flow passage of the second flow path 2 and the flow passage of the first flow path 1. Further, the valve port of the fifth valve port portion 55 and the valve port of the seventh valve port portion 57 are both in communication with the flow passage of the first sub-flow path 21 and the flow passage in the second main path 17. Specifically, the valve port of the sixth valve port portion 56 and the valve port of the eighth valve port portion 58 are both in communication with the flow passage of the third flow path 3 and the flow passage of the fourth flow path 4. Specifically, the valve port of the third valve port portion 53 and the valve port of the fourth valve port portion 54 are both in communication with the flow passage of the third flow passage 3 and the flow passage of the fourth flow passage 4 .

[0044] Further, refer to Figure 1 as well as Figure 5 The valve ports of the first, second, third, fourth, fifth, sixth, seventh and eighth valve port portions 58 are all blocked from the valve port of the ninth valve port portion 59 , and the valve port of the ninth valve port portion 59 is blocked from the flow channel in the connecting path 6 .

[0045] In some embodiments, in the first sub-state, the third expansion valve 81 in the refrigerant circuit 7 blocks the bypass passage 8 from the first main passage 75, and the bypass passage 8 from the second main passage 78, and the flow passage of the first main passage 75, the flow passage of the first branch passage 76, the flow passage of the second branch passage 77, and the flow passage of the second main passage 78 are connected.

[0046] In the first sub-state, part of the coolant passes through the second heat exchanger 41 and the battery heat exchange part 31, so as to cool the battery heat exchange part 31 through the second heat exchanger 41; the other part of the coolant passes through the first heat exchanger 12, the radiator 23 and the electric drive heat exchange part 13, so as to cool the electric drive heat exchange part 13.

[0047] In some embodiments, reference Figure 5 as well as Figure 6 , the thermal management system has a second sub-state, in which the valve port of the first valve port portion 51 is connected to the valve port of the second valve port portion 52, the valve port of the fifth valve port portion 55 is connected to the valve port of the seventh valve port portion 57, the valve port of the sixth valve port portion 56 is blocked from the valve port of the eighth valve port portion 58, and the valve port of the third valve port portion 53 is blocked from the valve port of the fourth valve port portion 54;

[0048] Or the second pump 42 stops working.

[0049] In some embodiments, reference Figure 5 as well as Figure 6In the second sub-state, the flow channel of the first main channel 75, the flow channel of the first branch channel 76, the flow channel of the second branch channel 77, the flow channel of the second main channel 78 and the flow channel of the bypass channel 8 are all connected.

[0050] In the second sub-state, the coolant passes through the first heat exchanger 12, the electric drive heat exchange unit 13 and the radiator 23. The first heat exchanger 12 exchanges heat with the refrigerant circuit 7 to achieve hot gas bypass of the compressor 71 and waste heat of the motor to de-ice the radiator 23.

[0051] In some embodiments, reference Figure 1 as well as Figure 7 , the thermal management system has a third state, the third state includes a third sub-state, in which the valve port of the first valve port portion 51 is connected to the valve port of the third valve port portion 53, the valve port of the fifth valve port portion 55 is connected to the valve port of the sixth valve port portion 56, the valve port of the second valve port portion 52 is connected to the valve port of the fourth valve port portion 54, and the valve port of the seventh valve port portion 57 is connected to the valve port of the eighth valve port portion 58. Further, the valve ports of the first, second, third, fourth, fifth, sixth, seventh, and eighth valve port portions 58 are all blocked from the valve port of the ninth valve port portion 59.

[0052] Specifically, refer to Figure 1 as well as Figure 7 The valve port of the first valve port portion 51 and the valve port of the third valve port portion 53 are both in communication with the flow channel of the first flow path 1 and the flow channel of the third flow path 3. Further, the valve port of the first valve port portion 51 and the valve port of the third valve port portion 53 are both in communication with the flow channel of the first main flow path 14 and the flow channel of the third flow path 3. The valve port of the fifth valve port portion 55 and the valve port of the sixth valve port portion 56 are in communication with the flow channel of the first flow path 1 and the flow channel of the third flow path 3. Further, the valve port of the fifth valve port portion 55 and the valve port of the sixth valve port portion 56 are both in communication with the flow channel of the second main flow path 17 and the flow channel of the third flow path 3. The valve port of the second valve port portion 52 and the valve port of the fourth valve port portion 54 are both in communication with the flow channel of the second flow path 2 and the flow channel of the fourth flow path 4. Further, the valve port of the second valve port portion 52 and the valve port of the fourth valve port portion 54 are both in communication with the flow channel of the second sub-flow path 22 and the flow channel of the fourth flow path 4. The valve port of the seventh valve port portion 57 and the valve port of the eighth valve port portion 58 are both connected to the flow channel of the second flow path 2 and the flow channel of the fourth flow path 4. Further, the valve port of the seventh valve port portion 57 and the valve port of the eighth valve port portion 58 are both connected to the flow channel of the first sub-flow path 21 and the flow channel of the fourth flow path 4.

[0053] In some embodiments, reference Figure 1 as well as Figure 7In the third sub-state, the third expansion valve 81 blocks the bypass passage 8 from the first main passage 75, and the bypass passage 8 from the second main passage 78, the first expansion valve 721 blocks the first branch passage 76 from the first main passage 75, and the first branch passage 76 from the second main passage 78, and the flow passage of the first main passage 75, the flow passage of the second branch passage 77 and the flow passage of the second main passage 78 are connected.

[0054] In the third sub-state, part of the coolant passes through the second heat exchanger 41 and the radiator 23, and the second heat exchanger 41 absorbs the heat of the radiator 23 and sends it to the first in-vehicle heat exchanger 73 to heat the interior of the vehicle. The other part of the coolant passes through the battery heat exchange unit 31 and the electric drive heat exchange unit 13, and the battery is heated by the waste heat of the motor. When the waste heat of the motor is not enough to heat the battery, the heat at the first heat exchanger 12 can be introduced through the three-way valve 18 to heat the battery.

[0055] In some embodiments, reference Figure 7 as well as Figure 8 , the third state includes a fourth sub-state, in which the valve port of the first valve port portion 51 is communicated with the valve port of the third valve port portion 53, the valve port of the fifth valve port portion 55 is communicated with the valve port of the sixth valve port portion 56, the valve port of the second valve port portion 52 is communicated with the valve port of the fourth valve port portion 54, and the valve port of the seventh valve port portion 57 is communicated with the valve port of the eighth valve port portion 58. Further, the valve ports of the first, second, third, fourth, fifth, sixth, seventh, and eighth valve port portions 58 are all blocked from the valve port of the ninth valve port portion 59.

[0056] In some embodiments, reference Figure 7 as well as Figure 8 In the fourth sub-state, the third expansion valve 81 in the refrigerant circuit 7 blocks the bypass passage 8 from the first main passage 75, and the bypass passage 8 from the second main passage 78, and the flow passage of the first main passage 75, the flow passage of the first branch passage 76, the flow passage of the second branch passage 77 and the flow passage of the second main passage 78 are connected.

[0057] In the fourth sub-state, part of the coolant passes through the second heat exchanger 41 and the radiator 23, and the second heat exchanger 41 absorbs the heat of the radiator 23 and sends it to the first in-vehicle heat exchanger 73 to heat the interior of the vehicle. Another part of the coolant passes through the battery heat exchange unit 31 and the electric drive heat exchange unit 13, and the battery is heated by the waste heat of the motor. When the waste heat of the motor is not enough to heat the battery, the heat at the first heat exchanger 12 can be introduced through the three-way valve 18 to heat the battery. On the refrigerant side, the refrigerant passes through the second heat exchanger 41 and the second in-vehicle heat exchanger 74 to cool the second in-vehicle heat exchanger 74, and the moisture in the air passing through the second in-vehicle heat exchanger 74 condenses into condensed water, thereby realizing the dehumidification and heating function in the vehicle.

[0058] In some embodiments, reference Figure 7 as well as Fig. 9 , the third state includes a fifth sub-state, the valve port of the first valve port portion 51 is connected to the valve port of the third valve port portion 53, the valve port of the fifth valve port portion 55 is connected to the valve port of the sixth valve port portion 56, the valve port of the second valve port portion 52 is blocked from the valve port of the fourth valve port portion 54, and the valve port of the seventh valve port portion 57 is blocked from the valve port of the eighth valve port portion 58;

[0059] Or the second pump 42 stops working.

[0060] Specifically, refer to Figure 7 as well as Fig. 9 The valve port of the first valve port portion 51 and the valve port of the third valve port portion 53 are both connected to the flow channel of the first flow path 1 and the flow channel of the third flow path 3. Further, the valve port of the first valve port portion 51 and the valve port of the third valve port portion 53 are both connected to the flow channel of the first main flow path 14 and the flow channel of the third flow path 3. The valve port of the fifth valve port portion 55 and the valve port of the sixth valve port portion 56 are both connected to the flow channel of the first flow path 1 and the flow channel of the third flow path 3. Further, the valve port of the fifth valve port portion 55 and the valve port of the sixth valve port portion 56 are both connected to the flow channel of the second main flow path 17 and the flow channel of the third flow path 3. The valve port of the second valve port portion 52 and the valve port of the fourth valve port portion 54 are both blocked from the flow channel of the second flow path 2 and the flow channel of the fourth flow path 4. Further, the valve port of the second valve port portion 52 and the valve port of the fourth valve port portion 54 are both blocked from the flow channel of the second sub-flow path 22 and the flow channel of the fourth flow path 4. The valve ports of the seventh valve port portion 57 and the valve ports of the eighth valve port portion 58 are both blocked from the flow channel of the second flow path 2 and the flow channel of the fourth flow path 4. Further, the valve ports of the seventh valve port portion 57 and the valve ports of the eighth valve port portion 58 are both blocked from the flow channel of the first sub-flow path 21 and the flow channel of the fourth flow path 4.

[0061] In some embodiments, reference Figure 7 as well as Fig. 9 In the fifth sub-state, the first expansion valve 721 blocks the flow passages of the second main path 78 and the first main path 75 from the flow passage of the first branch path 76, the flow passages of the first main path 75, the flow passages of the second branch path 77 and the flow passages of the second main path 78 are connected, and the flow passages of the bypass path 8, the flow passages of the first main path 75 and the flow passages of the second main path 78 are connected.

[0062] In the fifth sub-state, the coolant passes through the electric drive heat exchange part 13 and the battery heat exchange part 31, and the refrigerant passes through the first heat exchanger 12, the first in-vehicle heat exchanger 73 and the second heat exchanger 41. The bypass passage 8 is connected to realize the use of the power consumption of the compressor 71 for heating the interior of the vehicle; the battery is heated by the waste heat of the motor. When the waste heat of the motor is not enough to heat the battery, part of the coolant can be passed through the first heat exchanger 12 through the three-way valve 18 to realize the heating of the battery by part of the heat on the refrigerant side.

[0063] In some embodiments, reference Figure 1 as well as Fig.10 The thermal management system has a fourth state. In the fourth state, the valve port of the first valve port portion 51 is connected to the valve port of the third valve port portion 53, the valve port of the fifth valve port portion 55 is connected to the valve port of the seventh valve port portion 57, the valve port of the second valve port portion 52 is connected to the valve port of the fourth valve port portion 54, and the valve port of the sixth valve port portion 56 is connected to the valve port of the eighth valve port portion 58.

[0064] Specifically, refer to Figure 1 as well as Fig.10 The valve port of the first valve port portion 51 and the valve port of the third valve port portion 53 are both in communication with the flow channel of the first flow path 1 and the flow channel of the third flow path 3. Further, the valve port of the first valve port portion 51 and the valve port of the third valve port portion 53 are both in communication with the flow channel of the first main flow path 14 and the flow channel of the third flow path 3. The valve port of the fifth valve port portion 55 and the valve port of the seventh valve port portion 57 are both in communication with the flow channel of the first flow path 1 and the flow channel of the second flow path 2. Further, the valve port of the fifth valve port portion 55 and the valve port of the seventh valve port portion 57 are both in communication with the flow channel of the second main flow path 17 and the flow channel of the first sub-flow path 21. The valve port of the second valve port portion 52 and the valve port of the fourth valve port portion 54 are both in communication with the flow channel of the fourth flow path 4 and the flow channel of the second flow path 2. Further, the valve port of the second valve port portion 52 and the valve port of the fourth valve port portion 54 are both in communication with the flow channel of the fourth flow path and the flow channel of the second sub-flow path 22. The valve ports of the sixth valve port portion 56 and the valve ports of the eighth valve port portion 58 are both connected to the flow channel of the third flow path 3 and the flow channel of the fourth flow path 4. Further, the valve ports of the first, second, third, fourth, fifth, sixth, seventh, and eighth valve port portions 58 are all blocked from the valve port of the ninth valve port portion 59.

[0065] In some embodiments, reference Figure 1 as well as Fig.10 In the fourth state, the second expansion valve 722 blocks the flow passage of the first main path 75 and the flow passage of the second main path 78 from the flow passage of the second branch path 77, and the third expansion valve 81 blocks the flow passage of the first main path 75 and the flow passage of the second main path 78 from the flow passage of the bypass path 8, and the flow passage of the first main path 75, the flow passage of the second main path 78 and the flow passage of the first branch path 76 are all connected.

[0066] In the fourth state, the radiator 23 cools the battery and the motor by natural wind, or by adjusting the multi-way valve 5, the coolant passes through the second heat exchanger 41, the radiator 23, the battery heat exchanger and the electric drive heat exchanger, and the battery and the motor are cooled by the radiator 23. The refrigerant passes through the first heat exchanger 12 and the second in-vehicle heat exchanger 74 to cool the interior of the vehicle.

[0067] The above implementation modes are only used to illustrate the present application and are not intended to limit the technical solutions described in the present application. The understanding of the present application should be based on the technical personnel in the relevant technical field. Although the present application has been described in detail in this specification with reference to the above implementation modes, ordinary technical personnel in the field should understand that the technical personnel in the relevant technical field can still modify or replace some features of the present application with equivalents, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present application should be included in the scope of the claims of the present application.

Claims

1. A thermal management system, characterized in that: The multi-way valve (5) comprises a first flow path (1), a second flow path (2), a third flow path (3) and a fourth flow path (4); the multi-way valve (5) comprises a first valve port (51), a second valve port (52), a third valve port (53), a fourth valve port (54), a fifth valve port (55), a sixth valve port (56), a seventh valve port (57) and an eighth valve port (58); the first flow path (1) is connected to the first valve port (51) and the fifth valve port (55); the second flow path (2) is connected to the second valve port (52) and the seventh valve port (57); the third flow path (3) is connected to the third valve port (53) and the sixth valve port (56); the fourth flow path (4) is connected to the fourth valve port (54) and the eighth valve port (58); The thermal management system comprises a first pump (11), a first heat exchanger (12), a radiator (23), an electric drive heat exchange unit (13), a second pump (42), a second heat exchanger (41) and a battery heat exchange unit (31); the radiator (23) is connected to the second flow path (2); the first pump (11), the first heat exchanger (12) and the electric drive heat exchange unit (13) are all connected to the first flow path (1); the battery heat exchange unit (31) is connected to the third flow path (3); and the second heat exchanger (41) and the second pump (42) are both connected to the fourth flow path (4).

2. The thermal management system according to claim 1, characterized in that: The multi-way valve (5) includes a ninth valve port portion (59), the thermal management system includes a connecting path (6), the second flow path (2) includes a first sub-flow path (21) and a second sub-flow path (22), the second flow path (2) has a connecting port portion (24), the first sub-flow path (21) is connected to the seventh valve port portion (57), the second sub-flow path (22) is connected to the second valve port portion (52), the first sub-flow path (21), the second sub-flow path (22) and the connecting path (6) are all connected to the connecting port portion (24), the connecting path (6) is connected to the ninth valve port portion (59), and the radiator (23) is connected to the first sub-flow path (21).

3. The thermal management system according to claim 2, characterized in that: The thermal management system has a first state. In the first state, the valve port of the first valve port portion (51) is connected to the valve port of the third valve port portion (53), the valve port of the fifth valve port portion (55) is connected to the valve port of the ninth valve port portion (59), the valve port of the second valve port portion (52) is connected to the valve port of the fourth valve port portion (54), the valve port of the sixth valve port portion (56) is connected to the valve port of the eighth valve port portion (58), the valve port of the seventh valve port portion (57) is blocked from the flow channel of the first sub-flow path (21), the connecting path (6) is blocked from the first sub-flow path (21), and the connecting path (6) is connected to the second sub-flow path (22).

4. The thermal management system according to claim 1, characterized in that: The first flow path (1) comprises a first main path (14), a first branch path (15), a second branch path (16), a second main path (17) and a three-way valve (18); the first main path (14) is connected to the first valve port (51); the first branch path (15) and the second branch path (16) are both connected to the first main path (14); the first branch path (15), the second branch path (16) and the second main path (17) are respectively connected to the three valve ports of the three-way valve (18); the second main path (17) is connected to the fifth valve port (55); the electrically driven heat exchange part (13) is connected to the first branch path (15); the first heat exchanger (12) is connected to the second branch path (16); the first pump (11) is connected to the first main path (14); and the first heat exchanger (12) is connected in parallel to the electrically driven heat exchange part (13); The thermal management system has a first state. In the first state, the second branch (16) is blocked from the first main path (14), and the second main path (17) is blocked from the second branch (16).

5. The thermal management system according to claim 1, characterized in that: The thermal management system has a second state, in which the valve port of the first valve port portion (51) is in communication with the valve port of the second valve port portion (52), the valve port of the fifth valve port portion (55) is in communication with the valve port of the seventh valve port portion (57), the valve port of the sixth valve port portion (56) is in communication with the valve port of the eighth valve port portion (58), and the valve port of the third valve port portion (53) is in communication with the valve port of the fourth valve port portion (54); Alternatively, the valve port of the first valve port portion (51) is connected to the valve port of the second valve port portion (52), the valve port of the fifth valve port portion (55) is connected to the valve port of the seventh valve port portion (57), the valve port of the sixth valve port portion (56) is blocked from the valve port of the eighth valve port portion (58), and the valve port of the third valve port portion (53) is blocked from the valve port of the fourth valve port portion (54).

6. The thermal management system according to claim 1, characterized in that: The thermal management system has a third state, in which the valve port of the first valve port portion (51) is connected to the valve port of the third valve port portion (53), the valve port of the fifth valve port portion (55) is connected to the valve port of the sixth valve port portion (56), the valve port of the second valve port portion (52) is connected to the valve port of the fourth valve port portion (54), and the valve port of the seventh valve port portion (57) is connected to the valve port of the eighth valve port portion (58); Alternatively, the valve port of the first valve port portion (51) is connected to the valve port of the third valve port portion (53), the valve port of the fifth valve port portion (55) is connected to the valve port of the sixth valve port portion (56), the valve port of the second valve port portion (52) is blocked from the valve port of the fourth valve port portion (54), and the valve port of the seventh valve port portion (57) is blocked from the valve port of the eighth valve port portion (58).

7. The thermal management system according to claim 1, characterized in that: The thermal management system has a fourth state, in which the valve port of the first valve port portion (51) is connected to the valve port of the third valve port portion (53), the valve port of the fifth valve port portion (55) is connected to the valve port of the seventh valve port portion (57), the valve port of the second valve port portion (52) is connected to the valve port of the fourth valve port portion (54), and the valve port of the sixth valve port portion (56) is connected to the valve port of the eighth valve port portion (58).

8. The thermal management system according to any one of claims 1 to 7, characterized in that: The thermal management system includes a refrigerant circuit (7), the thermal management system includes a compressor (71) and a throttling device (72), the first heat exchanger (12) includes a first heat exchange part (121) and a second heat exchange part (122), the second heat exchanger (41) includes a third heat exchange part (411) and a fourth heat exchange part (412), the first heat exchange part (121), the compressor (71), the throttling device (72), and the third heat exchange part (411) are all connected to the refrigerant circuit (7), the second heat exchange part (122) is connected to the first flow path (1), and the fourth heat exchange part (412) is connected to the fourth flow path (4).

9. The thermal management system according to claim 8, characterized in that: The thermal management system includes a first in-vehicle heat exchanger (73) and a second in-vehicle heat exchanger (74), the first in-vehicle heat exchanger (73) and the second in-vehicle heat exchanger (74) are both connected to the refrigerant circuit (7), and the compressor (71) is connected between the first in-vehicle heat exchanger (73) and the second in-vehicle heat exchanger (74), and the compressor (71) is connected between the first heat exchange part (121) and the third heat exchange part (411).

10. The thermal management system according to claim 9, characterized in that: The refrigerant circuit (7) comprises a first main circuit (75), a first branch circuit (76), a second branch circuit (77), and a second main circuit (78); the throttling device (72) comprises a first expansion valve (721) and a second expansion valve (722); the first main circuit (75) is connected to an outlet of the compressor (71); the first branch circuit (76) and the second branch circuit (77) are both connected to the first main circuit (75); the first branch circuit (76) and the second branch circuit (77) are both connected to the second main circuit (78); , the second main line (78) is connected to the inlet of the compressor (71); the first in-vehicle heat exchanger (73) and the first heat exchange part (121) are both connected to the first main line (75); the first expansion valve (721) and the second in-vehicle heat exchanger (74) are both connected to the first branch line (76); the second expansion valve (722) and the third heat exchange part (411) are both connected to the second branch line (77); the second in-vehicle heat exchanger (74) and the third heat exchange part (411) are connected in parallel; The thermal management system includes a bypass passage (8) and a third expansion valve (81); the first main passage (75) includes a first sub-main passage (751) and a second sub-main passage (752); the first sub-main passage (751) is connected to the inlet of the compressor (71); the first sub-main passage (751), the second sub-main passage (752) and the bypass passage (8) are all connected; the first in-vehicle heat exchanger (73) and the first heat exchange part (121) are both connected to the second sub-main passage (752); and the second main passage (78) is connected to the bypass passage (8).

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