Thermal Management System

Abstract

The present application discloses a thermal management system, which includes a main system and a sub-system. The main system includes a main refrigerant system and a main coolant system. The main system includes a first heat exchanger, the first heat exchanger includes a first heat exchange part and a second heat exchange part, the main refrigerant system includes a first compressor, a second heat exchanger and a first throttling device; the sub-system includes a sub-refrigerant system and a sub-coolant system, the sub-system includes a third heat exchanger, the third heat exchanger includes a third heat exchange part and a fourth heat exchange part, the sub-refrigerant system includes a second compressor, a fourth heat exchanger and a second throttling device, the thermal management system includes a battery heat exchange component; the thermal management system includes a battery rapid heat dissipation mode, in which: the battery heat exchange component is connected to the second heat exchange part and the fourth heat exchange part; so that the coolant flowing through the second heat exchange part and the fourth heat exchange part can absorb the battery heat, and the battery heat can be quickly dissipated.

Description

Technical Field

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

[0002] The thermal management system of an electric vehicle can adjust the ambient temperature and battery temperature in the passenger compartment. In the related art, the thermal management system includes a refrigerant system and a coolant system. The thermal management system includes a first heat exchanger. The first heat exchanger includes a first heat exchange part and a second heat exchange part that are not connected. The first heat exchange part and the second heat exchange part can exchange heat. The refrigerant system includes a compressor, a throttling device and a second heat exchanger. The compressor, the first heat exchange part, the throttling device and the second heat exchanger can be connected to form a loop. The coolant system includes a battery heat exchange component. The battery heat exchange component and the second heat exchange part can be connected to form a loop. In the thermal management system in the related art, the battery can only exchange heat with the coolant flowing through the second heat exchange part. When the battery generates huge heat, the heat of the battery cannot be quickly dissipated. Summary of the invention

[0003] In view of the above problems existing in the related technologies, this application adopts the following technical solutions:

[0004] A thermal management system, characterized in that it comprises a main system and a sub-system, wherein the main system comprises a main refrigerant system and a main coolant system;

[0005] The main system includes a first heat exchanger, the first heat exchanger includes a first heat exchange part and a second heat exchange part which are not connected, the first heat exchange part and the second heat exchange part can perform heat exchange, and the main refrigerant system includes a first compressor, a second heat exchanger and a first throttling device;

[0006] The auxiliary system includes an auxiliary refrigerant system and an auxiliary coolant system, the auxiliary system includes a third heat exchanger, the third heat exchanger includes a third heat exchange part and a fourth heat exchange part that are not connected, the third heat exchange part and the fourth heat exchange part can perform heat exchange, the auxiliary refrigerant system includes a second compressor, a fourth heat exchanger and a second throttling device, and the thermal management system includes a battery heat exchange assembly;

[0007] The thermal management system includes a battery rapid heat dissipation mode, in which: the outlet of the first compressor is communicated with the first port of the second heat exchanger, the second port of the second heat exchanger is communicated with the first port of the first throttling device, the second port of the first throttling device is communicated with the first port of the first heat exchange part, and the second port of the first heat exchange part is communicated with the inlet of the first compressor; the battery heat exchange assembly is communicated with the second heat exchange part;

[0008] The outlet of the second compressor is connected to the first port of the fourth heat exchanger, the second port of the fourth heat exchanger is connected to the first port of the second throttling device, the second port of the second throttling device is connected to the first port of the third heat exchange part, and the second port of the third heat exchange part is connected to the inlet of the second compressor; the battery heat exchange assembly is connected to the fourth heat exchange part.

[0009] The thermal management system in the present application includes a main system and a sub-system. In the battery rapid heat dissipation mode, in the main system, the battery heat exchange component is connected to the second heat exchange part, and in the sub-system, the battery heat exchange component is connected to the fourth heat exchange part; so that the coolant flowing through the second heat exchange part can absorb the battery heat, and the coolant flowing through the fourth heat exchange part can also absorb the battery heat, so that the battery heat can be quickly dissipated. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the working principle of a battery rapid heat dissipation mode of an embodiment of a thermal management system of the present application;

[0011] Figure 2 is a schematic diagram of the working principle of the first cooling mode of an embodiment of a thermal management system of the present application;

[0012] Figure 3 This is a schematic diagram of the working principle of the second cooling mode of an embodiment of the thermal management system of the present application;

[0013] Figure 4 This is a schematic diagram of the working principle of the heating mode of an embodiment of the thermal management system of the present application;

[0014] Figure 5 This is a schematic diagram of the working principle of the heating and dehumidification mode of an embodiment of the thermal management system of the present application;

[0015] Figure 6 is a schematic diagram of the working principle of the defrost mode of an embodiment of the thermal management system of the present application;

[0016] Figure 7 This is a schematic diagram of the working principle of a battery rapid heat dissipation mode of another embodiment of the thermal management system of the present application;

[0017] Figure 8 This is a schematic diagram of the working principle of a battery rapid heat dissipation mode of another embodiment of the thermal management system of the present application;

[0018] Fig. 9 This is a schematic diagram of the working principle of a battery rapid heat dissipation mode of another embodiment of the thermal management system of the present application;

[0019] Fig.10This is a schematic diagram of the working principle of a battery speed absorption and heat dissipation mode of another embodiment of the thermal management system of the present application;

[0020] Fig.11 Yes Figure 1 Schematic diagram of the positions of the first, second, third, fourth, fifth sub-heat exchangers and the sixth heat exchanger shown.

[0021] In the attached figure:

[0022] 11. first heat exchanger; 111. first heat exchange unit; 112. second heat exchange unit; 12. second heat exchanger; 121. third sub-heat exchanger; 122. fourth sub-heat exchanger; 123. fifth sub-heat exchanger; 13. third heat exchanger; 131. third heat exchange unit; 132. fourth heat exchange unit; 14. fourth heat exchanger; 141. fifth heat exchange unit; 142. sixth heat exchange unit; 15. fifth heat exchanger; 151. first sub-heat exchanger; 152. second sub-heat exchanger; 16. sixth heat exchanger; 17. seventh heat exchanger; 171. seventh heat exchange unit; 172. eighth heat exchange unit; 18. eighth heat exchanger; 181. ninth heat exchanger; 19. tenth heat exchanger; 191. ninth heat exchange unit; 192. tenth heat exchange unit;

[0023] 21. a first compressor; 22. a second compressor;

[0024] 31. First throttling device; 32. Second throttling device; 33. Third throttling device; 34. Fourth throttling device;

[0025] 41. Battery heat exchange component; 42. Motor heat exchange component;

[0026] 51, first pump; 52, second pump; 53, third pump; 54, fourth pump;

[0027] 61, first flow path switching device; 61a, first interface; 61b, second interface; 61c, third interface; 62, second flow path switching device; 62a, fourth interface; 62b, fifth interface; 62c, sixth interface; 62d, seventh interface; 63, third flow path switching device; 63a, eighth interface; 63b, ninth interface; 63c, tenth interface; 63d, eleventh interface; 64, fourth flow path switching device; 64a, twelfth interface; 64b, thirteenth interface; 64c, fourteenth interface; 64d, fifteenth interface; 65, fifth flow path switching device; 65a, sixteenth interface; 65b, seventeenth interface; 65c, eighteenth interface;

[0028] 71. Gas-liquid separator;

[0029] 81. intermediate heat exchanger; 811. first heat exchange part; 812. second heat exchange part;

[0030] 91. first air supply device; 92. second air supply device; 91. third air supply device;

[0031] a, first flow path; b, second flow path; c, first branch; d, third flow path; e, second branch; f, fourth flow path. DETAILED DESCRIPTION

[0032] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0033] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms "a", "said" and "the" used in this application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0034] It should be understood that the words "first", "second" and similar words used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "an" do not indicate a quantity limitation, but indicate the presence of at least one; "plurality" indicates a quantity of two or more. Unless otherwise specified, words such as "front", "rear", "lower" and / or "upper" are only for convenience of description and are not limited to one position or one spatial orientation. Words such as "include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprises" include the elements or objects listed after "include" or "comprises" and their equivalents, and do not exclude other elements or objects.

[0035] The thermal management system of the exemplary embodiment of the present application is described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments and implementations may complement or be combined with each other.

[0036] According to a specific embodiment of the thermal management system of the present application, refer to Figures 1 to 6As shown, the thermal management system includes a main system and a sub-system. The main system includes a main refrigerant system and a main coolant system, and the sub-system includes a sub-refrigerant system and a sub-coolant system. Refrigerant flows in the refrigerant system, and coolant flows in the coolant system. The refrigerant in the refrigerant system and the coolant in the coolant system are isolated from each other and do not flow. The refrigerant can be R134A or carbon dioxide or other heat exchange media. The coolant can be a mixed solution of ethanol and water.

[0037] The main system includes a first compressor 21, a third flow path switching device 63, a first heat exchanger 11, a second heat exchanger 12, a first throttling device 31, an eighth heat exchanger 18, a ninth heat exchanger 181, a third throttling device 33, a fourth throttling device 34, an intermediate heat exchanger 81, a gas-liquid separator 71, a first pump 51, a battery heat exchange assembly 41, a sixth heat exchanger 16, a fifth pump 55 and a tenth heat exchanger 19.

[0038] The connection between the two components herein can be achieved by connecting the two components through a pipeline or through a connecting piece having a channel inside, or the two components can be directly contacted and connected to achieve the connection.

[0039] The first heat exchanger 11 includes a first heat exchange part 111 and a second heat exchange part 112 which are not connected. The flow channel of the first heat exchange part 111 is used for fluid refrigerant, and the flow channel of the second heat exchange part 112 is used for fluid cooling liquid. The refrigerant flowing in the first heat exchange part 111 can exchange heat with the cooling liquid flowing in the second heat exchange part 112. The tenth heat exchanger 19 includes a ninth heat exchange part 191 and a tenth heat exchange part 192 which are not connected. The flow channel of the ninth heat exchange part 191 is used for fluid refrigerant, and the flow channel of the tenth heat exchange part 192 is used for fluid cooling liquid. The refrigerant flowing in the ninth heat exchange part 191 can exchange heat with the cooling liquid flowing in the tenth heat exchange part 192.

[0040] refer to Figures 1 to 6The main refrigerant system includes a first compressor 21, a third flow path switching device 63, a second heat exchanger 12, a first throttling device 31, an eighth heat exchanger 18, a ninth heat exchanger 181, a third throttling device 33 and a fourth throttling device 34. The first compressor 21, the third flow path switching device 63, the second heat exchanger 12, the first throttling device 31 and the first heat exchange part 111 can be connected to form a loop; the first compressor 21, the third flow path switching device 63, the second heat exchanger 12, the third throttling device 33, the ninth heat exchanger 181, the fourth throttling device 34 and the eighth heat exchanger 18 can be connected to form a loop. The first port 31a of the first throttling device can be connected to the second port 12b of the second heat exchanger, the second port 31b of the first throttling device can be connected to the first port 111a of the first heat exchange part, and the second port 111b of the first heat exchange part can be connected to the third flow path switching device 63. The third throttling device 33 can be connected to the second port 12b of the second heat exchanger, the third throttling device 33 can be connected to the ninth heat exchanger 181, the ninth heat exchanger 181 can be connected to the fourth throttling device 34, the fourth throttling device 34 can be connected to the eighth heat exchanger 18, and the eighth heat exchanger 18 can be connected to the third flow path switching device 63. That is, the flow paths where the eighth heat exchanger 18, the ninth heat exchanger 181, the third throttling device 33 and the fourth throttling device 34 are located are connected in parallel with the flow paths where the first heat exchange part 111 and the first throttling device 31 are located. The eighth heat exchanger 18 and the ninth heat exchanger 181 are air-cooled heat exchangers. Optionally, the eighth heat exchanger 18 and the ninth heat exchanger 181 can be microchannel heat exchangers. The eighth heat exchanger 18 and the ninth heat exchanger 181 are indoor heat exchangers. In other optional embodiments, the main refrigerant system may not include the eighth heat exchanger 18, the ninth heat exchanger 181, the third throttling device 33 and the fourth throttling device 34, and the first compressor 21, the third flow path switching device 63, the second heat exchanger 12, the first throttling device 31 and the first heat exchange part 111 can be connected to form a loop.

[0041] Herein, the parallel connection of one component (flow path) and another component (flow path) means that one port of one component (one end of one flow path) is connected to one port of another component (one end of another flow path), and another port of one component (the other end of one flow path) is connected to another port of another component (the other end of another flow path).

[0042] The first throttling device 31, the third throttling device 33 and the fourth throttling device 34 are used to adjust the refrigerant flow in the main refrigerant system. The first throttling device 31 includes a throttling state and a cut-off state. In the throttling state, the first throttling device 31 throttles the refrigerant. In the cut-off state, the first throttling device 31 cuts off the refrigerant, so that the flow path where the first throttling device 31 is located is not conductive. Optionally, the first throttling device 31 can be a two-way throttling valve; the first throttling device 31 can also be a combination of other valve components, as long as it includes a throttling state and a cut-off state, and has a two-way throttling function in the throttling state. The third throttling device 33 includes a throttling state, a cut-off state and a full-pass state. In the throttling state, the third throttling device 33 throttles the refrigerant. In the cut-off state, the third throttling device 33 cuts off the refrigerant, so that the flow path where the third throttling device 33 is located is not conductive. In the full-pass state, the refrigerant in the flow path where the third throttling device 33 is located is fully circulated. The fourth throttling device 34 includes a throttling state, a cut-off state and a full-pass state. In the throttling state, the fourth throttling device 34 throttles the refrigerant. In the cut-off state, the fourth throttling device 34 cuts off the refrigerant, making the flow path where the fourth throttling device 34 is located blocked. In the full-pass state, the refrigerant in the flow path where the fourth throttling device 34 is located is fully circulated.

[0043] refer to Figures 1 to 7 , the third flow path switching device 63 switches the refrigerant flow direction in the main refrigerant system. Optionally, the third flow path switching device 63 can be a four-way valve or a combination of multiple valve components. In this embodiment, the third flow path switching device 63 is a four-way valve. Specifically: the third flow path switching device 63 includes an eighth interface 63a, a ninth interface 63b, a tenth interface 63c and an eleventh interface 63d. The eighth interface 63a is connected to the first port 12a of the second heat exchanger, the ninth interface 63b is connected to the outlet of the first compressor 21, the tenth interface 63c is connected to the second port 111b of the first heat exchange part and at least one of the eighth heat exchanger 18, and the eleventh interface 63d is connected to the inlet of the first compressor 21. The third flow path switching device 63 includes a third working state and a fourth working state. In the third working state, the eighth interface 63a is connected with the ninth interface 63b, and the tenth interface 63c is connected with the eleventh interface 63d; in the fourth working state, the eighth interface 63a is connected with the eleventh interface 63d, and the ninth interface 63b is connected with the tenth interface 63c.

[0044] The second heat exchanger 12 is an air cooling heat exchanger, and the refrigerant in the second heat exchanger 12 performs heat exchange with the ambient air. Optionally, the second heat exchanger 12 may be a microchannel heat exchanger. In this embodiment, the second heat exchanger 12 is an outdoor heat exchanger.

[0045] In some embodiments, reference Figures 1 to 6, the second heat exchanger 12 may include a third sub-heat exchanger 121, a fourth sub-heat exchanger 122 and a fifth sub-heat exchanger 123. The first port 121a of the third sub-heat exchanger can be communicated with the eighth interface 63a, the first port 122a of the fourth sub-heat exchanger can be communicated with the eighth interface 63a, the second port 121b of the third sub-heat exchanger can be communicated with the first port 123a of the fifth sub-heat exchanger, the second port 122b of the fourth sub-heat exchanger can be communicated with the first port 123a of the fifth sub-heat exchanger, and the second port 123b of the fifth sub-heat exchanger can be communicated with the first throttling device 31. The first port 121a of the third sub-heat exchanger and the first port 122a of the fourth sub-heat exchanger are collectively referred to as the first port 12a of the second heat exchanger, and the second port 123b of the fifth sub-heat exchanger is the second port 12b of the second heat exchanger. The third sub-heat exchanger 121, the fourth sub-heat exchanger 122 and the fifth sub-heat exchanger 123 are all air-cooled heat exchangers, and the refrigerant in the heat exchanger exchanges heat with the ambient air. Optionally, the third sub-heat exchanger 121, the fourth sub-heat exchanger 122 and the fifth sub-heat exchanger 123 can be microchannel heat exchangers. The second heat exchanger 12 includes the third sub-heat exchanger 121, the fourth sub-heat exchanger 122 and the fifth sub-heat exchanger 123. This arrangement increases the heat exchange area for heat exchange between the refrigerant and the air, and improves the heat exchange performance of the thermal management system. In other optional embodiments, refer to Figure 7 The second heat exchanger 12 is one heat exchanger. Compared with the configuration in which the second heat exchanger 12 is multiple heat exchangers, the configuration in which the second heat exchanger 12 is one heat exchanger has a simpler system structure and lower cost.

[0046] In other optional embodiments, reference Figures 1 to 6The main refrigerant system further includes a gas-liquid separator 71 and an intermediate heat exchanger 81. The intermediate heat exchanger 81 includes a first heat exchange part 811 and a second heat exchange part 812. The first heat exchange part 811 is connected between the second heat exchanger 12 and the first throttling device 31, the first heat exchange part 811 is connected between the second heat exchanger 12 and the third throttling device 33, and the gas-liquid separator 71 and the second heat exchange part 812 are connected between the inlet of the first compressor 21 and the eleventh interface 63d. The refrigerant circulating in the first heat exchange part 811 can exchange heat with the refrigerant in the second heat exchange part 812. The gas-liquid separator 71 is used to separate the liquid refrigerant and the gaseous refrigerant before entering the first compressor 21. In some embodiments, the gas-liquid separator 71 and the intermediate heat exchanger 81 can be two separate parts. The gas-liquid separator 71 can be connected between the second heat exchange part 812 and the eleventh interface 63d, or the gas-liquid separator 71 can be connected between the second heat exchange part 812 and the compressor inlet. In other optional embodiments, the gas-liquid separator 71 and the intermediate heat exchanger 81 may be an integrated component. In other optional embodiments, the main refrigerant system may not include the gas-liquid separator 71 and the intermediate heat exchanger 81, and the second heat exchanger 12 may be directly connected to the first throttling device 31 through a pipeline or other connecting member with a channel inside, and / or the second heat exchanger 12 may be directly connected to the third throttling device 33 through a pipeline or other connecting member with a channel inside.

[0047] refer to Figures 1 to 7 , the thermal management system includes a battery heat exchange assembly 41. The main coolant system includes a first pump 51, a motor heat exchange assembly 42, a fifth pump 55, a sixth heat exchanger 16 and a fourth flow path f, and the motor heat exchange assembly 42, the tenth heat exchange unit 192, the sixth heat exchanger 16 and the fifth pump 55 are connected to the fourth flow path f. The second heat exchange unit 112, the first pump 51 and the battery heat exchange assembly 41 can be connected to form a loop. The motor heat exchange assembly 42, the tenth heat exchange unit 192, the sixth heat exchanger 16 and the fifth pump can be connected to form a loop.

[0048] It should be noted that, the phrase “a certain component is connected to a certain flow path” in this article means that the flow path where the certain component is located is a certain flow path, and the certain component is connected between a first end and a second end of the certain flow path.

[0049] refer to Figures 1 to 7The main coolant system includes a fourth flow path switching device 64, which includes a twelfth interface 64a, a thirteenth interface 64b, a fourteenth interface 64c and a fifteenth interface 64d. The twelfth interface 64a is connected to the second heat exchange part 112, the thirteenth interface 64b is connected to the battery heat exchange assembly 41, the fourteenth interface 64c is connected to one end of the fourth flow path f, and the fifteenth interface 64d is connected to the other end of the fourth flow path f. The fourth flow path switching device 64 includes a fifth working state and a sixth working state. In the fifth working state, the twelfth interface 64a is connected to the thirteenth interface 64b, and the fourteenth interface 64c is connected to the fifteenth interface 64d; in the sixth working state, the thirteenth interface 64b is connected to the fourteenth interface 64c, and the fifteenth interface 64d is connected to the sixteenth interface 65a. That is, in the fifth working state, the components in the fourth flow path f are connected to form a loop, and the fourth flow path f is not connected to the second heat exchange part 112, and the flow path where the first pump 51 and the battery heat exchange assembly 41 are located. In the sixth working state, the flow path where the second heat exchange part 112, the first pump 51 and the battery heat exchange assembly 41 are located is connected to the fourth flow path f, and the flow path where the second heat exchange part 112, the first pump 51 and the battery heat exchange assembly 41 are located is connected to the fourth flow path f to form a loop.

[0050] refer to Figures 1 to 7 , the main coolant system also includes a fifth flow path switching device 65 and a second branch e. ​​The fifth flow path switching device 65 includes a sixteenth interface 65a, a seventeenth interface 65b and an eighteenth interface 65c, and the sixteenth interface 65a can be connected to one of the seventeenth interface 65b and the eighteenth interface 65c. The sixteenth interface 65a is connected to the tenth heat exchange part 192, the seventeenth interface 65b is connected to one end of the second branch e, the eighteenth interface 65c is connected to the sixth heat exchanger 16, the second branch e is connected in parallel with the sixth heat exchanger 16, the other end of the second branch e is connected to the fifteenth interface 64d, and the sixth heat exchanger 16 is connected to the fifteenth interface 64d.

[0051] refer to Figures 1 to 7 The auxiliary system includes an auxiliary refrigerant system and an auxiliary coolant system. The auxiliary system includes a second compressor 22, a third heat exchanger 13, a second throttling device 32, a fourth heat exchanger 14 and a second pump 52. The third heat exchanger 13 includes a third heat exchange part 131 and a fourth heat exchange part 132 which are not connected. The flow channel of the third heat exchange part 131 is used to circulate the refrigerant, and the flow channel of the fourth heat exchange part 132 is used to circulate the coolant. The third heat exchange part 131 and the fourth heat exchange part 132 can perform heat exchange.

[0052] The second throttling device 32 is used to adjust the refrigerant flow in the main refrigerant system. The second throttling device 32 includes a throttling state and a cut-off state. In the throttling state, the second throttling device 32 throttles the refrigerant. In the cut-off state, the second throttling device 32 cuts off the refrigerant, so that the flow path where the second throttling device 32 is located is not conductive. Optionally, the second throttling device 32 can be a two-way throttling valve; the second throttling device 32 can also be a combination of other valve components, as long as it includes a throttling state and a cut-off state, and has a two-way throttling function in the throttling state.

[0053] In some embodiments, reference Figures 1 to 6 The thermal management system further includes a seventh heat exchanger 17, the seventh heat exchanger 17 includes a seventh heat exchange part 171 and an eighth heat exchange part 172, the flow channel of the seventh heat exchange part 171 is used to connect the coolant, the seventh heat exchange part 171 can be connected between the sixth heat exchanger 16 and the fourth flow path switching device 64 in the main coolant system, and the eighth heat exchange part 172 can be connected to the auxiliary refrigerant system. In some embodiments, reference Figures 1 to 6 The fourth heat exchanger 14 includes a fifth heat exchange part 141 and a sixth heat exchange part 142. The fifth heat exchange part 141 can be connected to the auxiliary refrigerant system, and the sixth heat exchange part 142 can be connected to the auxiliary coolant system. The fourth heat exchanger 14 is a water-cooled heat exchanger. In the auxiliary refrigerant system, the outlet of the second compressor 22 can be connected to the first port 172a of the eighth heat exchange part, the second port 172b of the eighth heat exchange part can be connected to the first port 141a of the fifth heat exchange part, the second port 141b of the fifth heat exchange part can be connected to the first port 32a of the second throttling device, the second port 32b of the second throttling device can be connected to the first port 131a of the third heat exchange part, and the second port 131b of the third heat exchange part can be connected to the inlet of the second compressor 22.

[0054] In other optional embodiments, the thermal management system may not include the seventh heat exchanger 17, in the main coolant system, the seventh heat exchange part 171 is not connected between the sixth heat exchanger 16 and the fourth flow switching device 64, and in the auxiliary refrigerant system, the eighth heat exchange part 172 is not connected between the second compressor 22 and the fourth heat exchanger 14.

[0055] In other optional embodiments, reference Figure 7, the fourth heat exchanger 14 is an air-cooled heat exchanger, the inlet of the first compressor 21 can be communicated with the first port 14a of the fourth heat exchanger, and the second port 14b of the fourth heat exchanger can be communicated with the first port 32a of the second throttling device. Optionally, the fourth heat exchanger 14 is a microchannel heat exchanger. The refrigerant in the fourth heat exchanger 14 exchanges heat with the ambient air. When the fourth heat exchanger 14 is a water-cooled heat exchanger, the first port 14a of the fourth heat exchanger is the first port 141a of the fourth heat exchange part, and the second port 14b of the fourth heat exchanger is the second port 141b of the fourth heat exchange part.

[0056] In some embodiments, reference Figures 1 to 6 As shown, the auxiliary coolant system includes a second flow path b, a third flow path d, a fifth heat exchanger 15, a second pump 52 and a fourth pump 54. The fifth heat exchanger 15 and the fourth pump 54 are connected to the third flow path d, the fourth heat exchange unit 132 and the second pump 52 are connected to the second flow path b, the second flow path b and the battery heat exchange assembly 41 can be connected to form a loop, and the second flow path b is not connected to the third flow path d. In some embodiments, the fifth heat exchanger 15 includes a first sub-heat exchanger 151 and a second sub-heat exchanger 152, the first port 151a of the first sub-heat exchanger can be communicated with the first port 142a of the sixth heat exchange unit, the first port 152a of the second sub-heat exchanger is communicated with the first port 142a of the sixth heat exchange unit, the second port 151b of the first sub-heat exchanger is communicated with the second port 142b of the sixth heat exchange unit, the second port 151b of the first sub-heat exchanger is communicated with the second port 142b of the sixth heat exchange unit, and the first sub-heat exchanger 151 and the second sub-heat exchanger 152 are connected in parallel; the fifth heat exchanger 15 includes the first sub-heat exchanger 151 and the second sub-heat exchanger 152, which can improve the heat exchange performance of the fifth heat exchanger 15. In other embodiments, the fifth heat exchanger 15 is a heat exchanger, and the setting of the fifth heat exchanger 15 as a heat exchanger is simple in system structure compared with the setting of the fifth heat exchanger 15 as multiple heat exchangers.

[0057] refer to Figures 1 to 6 The main coolant system includes a first flow path a and a first pump 51. The first pump 51 and the second heat exchange unit 112 are connected to the first flow path a. The first flow path a and the battery heat exchange component 41 can be connected to form a loop; the auxiliary coolant system includes a second flow path b and a second pump 52. The second pump 52 and the fourth heat exchange unit 132 are connected to the second flow path b. The battery heat exchange component 41 and the second flow path b can be connected to form a loop. The first flow path a and the second flow path b are connected in parallel.

[0058] The battery heat exchange component 41 can be connected to the second heat exchange part 112, and the battery heat exchange component 41 can be connected to the fourth heat exchange part 132; so that the battery can exchange heat with the coolant flowing through the second heat exchange part 112, and can also exchange heat with the coolant flowing through the fourth heat exchange part 132, thereby increasing the ways to regulate the battery temperature.

[0059] The thermal management system includes a main system and a secondary system. Under normal working conditions, the secondary system is not in operation, and the main system has sufficient thermal management capabilities. Under some special working conditions, the main system and the secondary system operate together. Therefore, the secondary system should be as small as possible; the secondary system can adopt a highly integrated module group design to improve the integration of the secondary system, which is conducive to the miniaturization of the secondary system. In addition, the refrigerant in the main refrigerant system is CO2, and the refrigerant in the secondary refrigerant system is R134A.

[0060] refer to Figures 1 to 6 When the thermal management system is used in an electric vehicle, the third sub-heat exchanger 121, the fourth sub-heat exchanger 122, the fifth sub-heat exchanger 123, the first sub-heat exchanger 151, the second sub-heat exchanger 152 and the sixth heat exchanger 16 are located at the front end of the vehicle head, and the vehicle head has a vent, so that the third sub-heat exchanger 121, the fourth sub-heat exchanger 122, the fifth sub-heat exchanger 123, the first sub-heat exchanger 151, the second sub-heat exchanger 152 and the sixth heat exchanger 16 can exchange heat with the air. The length direction of the fifth sub-heat exchanger 123 is roughly parallel to the width direction of the vehicle, and the third sub-heat exchanger 121 and the fourth sub-heat exchanger 122 are respectively located on opposite sides of the length direction of the fifth sub-heat exchanger 123. Reference Fig.11 , the length direction L121 of the third sub-heat exchanger 121 intersects with the length direction L123 of the fifth sub-heat exchanger 123 at a first point A, the third sub-heat exchanger 121 rotates around the first point A by a first angle α relative to the fifth sub-heat exchanger 123, the length direction L122 of the fourth sub-heat exchanger 122 intersects with the length direction L123 of the fifth sub-heat exchanger 123 at a second point B, the fourth sub-heat exchanger 122 rotates around the second point B by a second angle β relative to the fifth sub-heat exchanger 123, and the first angle α and the second angle β are both obtuse angles. The third sub-heat exchanger 121, the fifth sub-heat exchanger 123 and the fourth sub-heat exchanger 122 are arranged roughly in a C shape.

[0061] The first sub-heat exchanger 151 and the second sub-heat exchanger 152 are respectively located on opposite sides of the length direction of the fifth sub-heat exchanger 123, and the sixth heat exchanger 16 is located between the first sub-heat exchanger 151 and the second sub-heat exchanger 152; the length direction of the sixth heat exchanger 16 is parallel to the length direction of the fifth heat exchanger 15, the length direction of the first sub-heat exchanger 151 is parallel to the length direction of the third sub-heat exchanger 121, and the length direction of the second sub-heat exchanger 152 is parallel to the length direction of the fourth sub-heat exchanger 122.

[0062] The thermal management system also includes a first air supply device 91, a second air supply device 92 and a third air supply device 93. The first air supply device 91, the third sub-heat exchanger 121 and the first sub-heat exchanger 151 are arranged side by side, the second air supply device 92, the fourth sub-heat exchanger 122 and the second sub-heat exchanger 152 are arranged side by side, and the third air supply device 93, the fifth sub-heat exchanger 123 and the sixth heat exchanger 16 are arranged side by side.

[0063] The third sub-heat exchanger 121, the fifth sub-heat exchanger 123 and the fourth sub-heat exchanger 122 are arranged roughly in a C shape, the first air supply device 91, the third sub-heat exchanger 121 and the first sub-heat exchanger 151 are arranged side by side, the second air supply device 92, the fourth sub-heat exchanger 122 and the second sub-heat exchanger 152 are arranged side by side, and the third air supply device 93, the fifth sub-heat exchanger 123 and the sixth heat exchanger 16 are arranged side by side, so that the side space of the front end of the vehicle is fully utilized, the heat exchange area between the heat exchanger and the ambient air is increased, and the heat exchange performance of the thermal management system is improved.

[0064] The air sent by the first air supply device 91 can pass through the first sub-heat exchanger 151 and the third sub-heat exchanger 121, the air sent by the second air supply device 92 can pass through the second sub-heat exchanger 152 and the fourth sub-heat exchanger 122, and the air sent by the third air supply device 93 can pass through the fifth sub-heat exchanger 123 and the sixth heat exchanger 16. Optionally, the air supply device is a fan, which can be a blowing fan or a suction fan. In this embodiment, the air supply device adopts a suction fan. Along the air supply direction of the first air supply device 91, the third sub-heat exchanger 121 is located before the first sub-heat exchanger 151, and the third sub-heat exchanger 121 is located between the first sub-heat exchanger 151 and the first air supply device 91; along the air supply direction of the second air supply device 92, the fourth sub-heat exchanger 122 is located before the second sub-heat exchanger 152, and the fourth sub-heat exchanger 122 is located between the second sub-heat exchanger 152 and the second air supply device 92; along the air supply direction of the third air supply device 93, the sixth heat exchanger 16 is located before the fifth sub-heat exchanger 123, and the sixth heat exchanger 16 is located between the fifth sub-heat exchanger 123 and the third air supply device 93. The wind from the first air supply device 91 first passes through the first sub-heat exchanger 151 and then through the third sub-heat exchanger 121, the wind from the second air supply device 92 first passes through the second sub-heat exchanger 152 and then through the fourth sub-heat exchanger 122, and the wind from the third air supply device 93 first passes through the fifth sub-heat exchanger 123 and then through the sixth heat exchanger 16.

[0065] The air supply direction of the first air supply device 91 is perpendicular to the length direction of the third sub-heat exchanger 121 , the air supply direction of the second air supply device 92 is perpendicular to the length direction of the fourth sub-heat exchanger 122 , and the air supply direction of the third air supply device 93 is perpendicular to the length direction of the fifth sub-heat exchanger 123 .

[0066] In other optional embodiments, the third sub-heat exchanger 121 may be located behind the first sub-heat exchanger 151 along the air supply direction of the first air supply device 91, and the fourth sub-heat exchanger 122 may be located behind the second sub-heat exchanger 152 along the air supply direction of the second air supply device 92.

[0067] The thermal management system has multiple working modes, including battery rapid heat dissipation mode, cooling mode, heating mode, heating and dehumidification mode, and defrosting mode. In different working modes, the second heat exchanger 12 can be used as an evaporator or a condenser. The eighth heat exchanger 18 and the ninth heat exchanger 181 can exchange heat with the air entering the passenger compartment air conditioner. The eighth heat exchanger 18 and the ninth heat exchanger 181 are arranged in the air conditioner, and a blower can also be arranged in the air conditioner to transport air. Reference Figures 1 to 10 , where the thick solid line is the flow path of the refrigerant, the thin solid line is the flow path of the coolant, and the dotted line indicates that in this mode, this section of the flow path is not conductive.

[0068] The thermal management system of this embodiment is not only applicable to vehicles, but also to other heat exchange systems that require thermal management. For the sake of ease of description, the specification of this application takes a vehicle as an example.

[0069] When the battery in the vehicle needs to be cooled down quickly, such as when a pure electric vehicle is fast-charging in the summer, the battery generates a huge amount of heat. In order to ensure battery safety, the thermal management system needs to quickly dissipate the heat generated by the battery. The thermal management system can start the battery fast heat dissipation mode. Figure 1As shown, in the battery rapid heat dissipation mode, the first throttling device 31 is in a throttling state, the second throttling device 32 is in a throttling state, the third throttling device 33 is in a cut-off state, the third flow path switching device 63 is in a third working state, the fourth flow path switching device 64 is in a fifth working state, the sixteenth interface 65a of the fifth flow path switching device 65 is connected to the eighteenth interface 65c, the sixteenth interface 65a is not connected to the seventeenth interface 65b, the first pump 51 is turned on, the second pump 52 is turned on, the fourth pump 54 is turned on, and the fifth pump 55 is turned on. The circulation path of the main refrigerant system is as follows: the outlet of the first compressor 21 is communicated with the ninth interface 63b, the ninth interface 63b is communicated with the eighth interface 63a, the eighth interface 63a is communicated with the ninth heat exchange part 191, the ninth heat exchange part 191 is communicated with the first port 121a of the third sub-heat exchanger, the ninth heat exchange part 191 is communicated with the first port 122a of the fourth sub-heat exchanger, the second port 121b of the third sub-heat exchanger is communicated with the first port 123a of the fifth sub-heat exchanger, and the second port 122b of the fourth sub-heat exchanger is communicated with the first port 123a of the fifth sub-heat exchanger. The second port 123b of the fifth sub-heat exchanger is connected to the second heat exchange part 812, the second heat exchange part 812 is connected to the first port 31a of the first throttling device, the second port 31b of the first throttling device is connected to the first port 111a of the first heat exchange part, the second port 111b of the first heat exchange part is connected to the tenth interface 63c, the tenth interface 63c is connected to the eleventh interface 63d, the eleventh interface 63d is connected to the gas-liquid separator 71, the gas-liquid separator 71 is connected to the first heat exchange part 811, and the first heat exchange part 811 is connected to the inlet of the first compressor 22. The circulation path of the main coolant is: the first pump 51 is connected to the battery heat exchange assembly 41, the battery heat exchange assembly 41 is connected to the thirteenth interface 64b, the thirteenth interface 64b is connected to the twelfth interface 64a, the twelfth interface 64a is connected to the second heat exchange part 112, and the second heat exchange part 112 is connected to the first pump 51; the motor heat exchange assembly 42, the fifth pump 55, the seventh heat exchange part 171, the sixth heat exchanger 16 and the tenth heat exchange part 192 are connected to form a loop, one end of the fourth flow path f is connected to the fourteenth interface 64c, the other end of the fourth flow path f is connected to the fifteenth interface 64d, and the fourth flow path f is not connected to the flow path where the battery heat exchange assembly 41 is located.

[0070] The circulation path of the auxiliary refrigerant system is: the outlet of the second compressor 22 is connected to the first port 172a of the eighth heat exchange part, the second port 172b of the eighth heat exchange part is connected to the first port 141a of the fifth heat exchange part, the second port 141b of the fifth heat exchange part is connected to the first port 32a of the second throttling device, the second port 32b of the second throttling device is connected to the third heat exchange part 131, and the third heat exchange part 131 is connected to the inlet of the second compressor 22. The circulation path of the auxiliary coolant system is: the fourth heat exchange part 132, the second pump 52, and the battery heat exchange assembly 41 are connected to form a loop; the first port 142a of the sixth heat exchange part is connected to the first port 151a of the first sub-heat exchanger, the first port 142a of the sixth heat exchange part is connected to the first port 152a of the second sub-heat exchanger, the second port 151b of the first sub-heat exchanger is connected to the second port 142b of the sixth heat exchange part, and the second port 152b of the second sub-heat exchanger is connected to the second port 142b of the sixth heat exchange part.

[0071] In the battery rapid heat dissipation mode, in the main system, the third sub-heat exchanger 121, the fourth sub-heat exchanger 122 and the fifth sub-heat exchanger 123 are condensers, and the first heat exchanger 11 is an evaporator. In the auxiliary system, the third heat exchanger 13 is an evaporator, and the fourth heat exchanger 14 is a condenser. The refrigerant circulating in the first heat exchange part 111 can absorb the heat of the coolant circulating in the second heat exchange part 112, and the refrigerant circulating in the third heat exchange part 131 can absorb the heat of the coolant circulating in the fourth heat exchange part 132; the battery heat exchange component 41 is connected to the second heat exchange part 112 and the fourth heat exchange part 132, so that the battery can simultaneously exchange heat with the coolant in the main and auxiliary coolant systems, that is, the first heat exchange part 111 and the third heat exchange part 131 can absorb the heat of the battery at the same time, and then the heat of the battery can be quickly dissipated.

[0072] When there is a need for cooling in the passenger compartment, the thermal management system can start the cooling mode, which includes the first cooling mode and the second cooling mode. When both the passenger compartment and the battery have cooling needs, and the main system is sufficient to meet the cooling needs of the battery, the thermal management system can start the first cooling mode. When both the passenger compartment and the battery have cooling needs, and the battery has a rapid cooling need, and the main system is insufficient to meet the cooling needs of the battery, the thermal management system can start the second cooling mode.

[0073] Reference Figure 2In the first cooling mode, the first throttling device 31 is in the throttling state, the third throttling device 33 is in the throttling state, the fourth throttling device 34 is in the full-pass state, the third flow path switching device 63 is in the third working state, the fourth flow path switching device 64 is in the fifth working state, the sixteenth interface 65a of the fifth flow path switching device 65 is connected to the eighteenth interface 65c, the sixteenth interface 65a is not connected to the seventeenth interface 65b, the first pump 51 is turned on, and the fifth pump 55 is turned on. The second compressor 22 is in the non-working state. The first cooling mode is different from the battery rapid heat dissipation mode in that: in the first cooling mode, the second compressor 22 is not in operation, and the auxiliary system is not circulated; in the main refrigerant system, the second heat exchange part 812 is connected to the first port 31a of the first throttling device, and the second heat exchange part 812 is connected to the third throttling device 33, that is, the refrigerant flowing out of the second heat exchange part 812 is divided into two paths, one path flows to the first throttling device 31 and the first heat exchange part 111 in sequence, and the other path flows to the third throttling device 33, the ninth heat exchanger 181, the fourth throttling device 34 and the eighth heat exchanger 18 in sequence, and the refrigerant flowing out of the first heat exchange part 111 merges with the refrigerant flowing out of the eighth heat exchanger 18 and flows to the tenth interface 63c together. The connection between other components in the first cooling mode is the same as that in the battery rapid heat dissipation mode.

[0074] In the first cooling mode, the third sub-heat exchanger 121, the fourth sub-heat exchanger 122 and the fifth sub-heat exchanger 123 are condensers, and the first heat exchanger 11, the ninth heat exchanger 181 and the eighth heat exchanger 18 are evaporators. The auxiliary system does not operate. The ninth heat exchanger 181 and the eighth heat exchanger 18 absorb the heat of the air in the passenger compartment to achieve a cooling effect. The refrigerant in the first heat exchange part 111 can absorb the heat of the coolant circulating in the second heat exchange part 112. The second heat exchange part 112 is connected to the battery heat exchange assembly 41, so that the heat of the battery can be dissipated through the coolant circulating in the second heat exchange part 112.

[0075] The difference between the second refrigeration mode and the first refrigeration mode is that in the second refrigeration mode, the second compressor 22 is in operation. Figure 3In the second cooling mode, the circulation path of the auxiliary refrigerant system is: the outlet of the second compressor 22 is connected to the first port 172a of the eighth heat exchange part, the second port 172b of the eighth heat exchange part is connected to the first port 141a of the fifth heat exchange part, the second port 141b of the fifth heat exchange part is connected to the first port 32a of the second throttling device, the second port 32b of the second throttling device is connected to the third heat exchange part 131, and the third heat exchange part 131 is connected to the inlet of the second compressor 22. The circulation path of the auxiliary coolant system is: the fourth heat exchange part 132, the first pump 51, and the battery heat exchange assembly 41 are connected to form a loop; the first port 142a of the sixth heat exchange part is connected to the first port 151a of the first sub-heat exchanger, the first port 142a of the sixth heat exchange part is connected to the first port 152a of the second sub-heat exchanger, the second port 151b of the first sub-heat exchanger is connected to the second port 142b of the sixth heat exchange part, and the second port 152b of the second sub-heat exchanger is connected to the second port 142b of the sixth heat exchange part. The working principle and the connection relationship of each component of the main system in the second refrigeration mode are the same as those of the main system in the first refrigeration mode.

[0076] In the second cooling mode, the third sub-heat exchanger 121, the fourth sub-heat exchanger 122 and the fifth sub-heat exchanger 123 are condensers, and the first heat exchanger 11, the ninth heat exchanger 181 and the eighth heat exchanger 18 are evaporators. The ninth heat exchanger 181 and the eighth heat exchanger 18 absorb the heat of the air in the passenger compartment to achieve a cooling effect. In the auxiliary system, the third heat exchanger 13 is an evaporator and the fourth heat exchanger 14 is a condenser. The refrigerant circulating in the first heat exchange part 111 can absorb the heat of the coolant circulating in the second heat exchange part 112, and the refrigerant circulating in the third heat exchange part 131 can absorb the heat of the coolant circulating in the fourth heat exchange part 132. The battery heat exchange assembly 41 is connected to the second heat exchange part 112 and the fourth heat exchange part 132, so that the battery can simultaneously exchange heat with the coolant in the main and auxiliary coolant systems, that is, the first heat exchange part 111 and the third heat exchange part 131 can simultaneously absorb the heat of the battery, and then the heat of the battery can be quickly dissipated.

[0077] When there is a need to heat the passenger compartment, the thermal management system can activate the heating mode. Figure 4In the heating mode, the first throttling device 31 is in the cut-off state, the third throttling device 33 is in the throttling state, the fourth throttling device 34 is in the full-pass state, the third flow path switching device 63 is in the fourth working state, the sixteenth interface 65a of the fifth flow path switching device 65 is connected with the seventeenth interface 65b, the sixteenth interface 65a is not connected with the eighteenth interface 65c, the first pump 51 is turned off, the second pump 52 is turned off, the fourth pump 54 is turned off, and the fifth pump 55 is turned on. The circulation path of the main refrigerant is as follows: the outlet of the first compressor 21 is connected to the ninth interface 63b, the tenth interface 63c is connected to the eighth heat exchanger 18, the eighth heat exchanger 18 is connected to the fourth throttling device 34, the fourth throttling device 34 is connected to the ninth heat exchanger 181, the ninth heat exchanger 181 is connected to the second heat exchange part 812, the second heat exchange part 812 is connected to the second port 123b of the fifth sub-heat exchanger, the first port 123a of the fifth sub-heat exchanger is connected to the second port 121b of the third sub-heat exchanger, and the fifth sub-heat exchanger 181 is connected to the second heat exchange part 812. The first port a of the cooling device 23 is connected to the second port 122b of the fourth sub-heat exchanger, the second port 121b of the third sub-heat exchanger is connected to the ninth heat exchange part 191, the second port 122b of the fourth sub-heat exchanger is connected to the ninth heat exchange part 191, the ninth heat exchange part 191 is connected to the eighth interface 63a, the eighth interface 63a is connected to the eleventh interface 63d, the eleventh interface 63d is connected to the gas-liquid separator 71, the gas-liquid separator 71 is connected to the first heat exchange part 811, and the first heat exchange part 811 is connected to the inlet of the first compressor 22. The circulation path of the main coolant system is: the motor heat exchange component 42, the tenth heat exchange part 192, the second branch e and the fifth pump 55 are connected to form a loop. The second compressor 22 is in an inoperative state, and the auxiliary system is not running.

[0078] In the heating mode, the third sub-heat exchanger 121, the fourth sub-heat exchanger 122 and the fifth sub-heat exchanger 123 are evaporators, and the eighth heat exchanger 18 and the ninth heat exchanger 181 are condensers. The ninth heat exchanger 181 and the eighth heat exchanger 18 release heat into the passenger compartment to achieve a heating effect.

[0079] In winter, when the ambient temperature is low and the temperature inside the passenger compartment is high, the temperature inside the passenger compartment differs greatly from the ambient temperature outside the vehicle, and water mist or water droplets will condense on the windows, affecting the vision and posing a safety hazard when driving. The thermal management system of this embodiment has a heating and dehumidification mode. Figure 5, the connection relationship of each component in the main refrigerant system in the heating and dehumidification mode is the same as that in the heating mode, and the difference between the heating and dehumidification mode and the heating mode is that: in the heating and dehumidification mode, the third throttling device 33 is in a full-pass state, the fourth throttling device 34 is in a throttling state, the sixteenth interface 65a of the fifth flow path switching device 65 is connected to the eighteenth interface 65c, and the sixteenth interface 65a is not connected to the seventeenth interface 65b. In the heating and dehumidification mode, the first throttling device 31 is in a cut-off state, the third throttling device 33 is in a full-pass state, the fourth throttling device 34 is in a throttling state, the third flow path switching device 63 is in a fourth working state, the sixteenth interface 65a of the fifth flow path switching device 65 is connected to the eighteenth interface 65c, and the sixteenth interface 65a is not connected to the seventeenth interface 65b, and the circulation path of the main coolant system is: the motor heat exchange component 42, the tenth heat exchange part 192, the sixth heat exchanger 16, the seventh heat exchange part 171 and the fifth pump 55 are connected to form a loop. The second compressor 22 is in an inoperative state, and the auxiliary system is not operating.

[0080] In the heating and dehumidification mode, the eighth heat exchanger 18 is a condenser, and the third sub-heat exchanger 121, the fourth sub-heat exchanger 122, the fifth sub-heat exchanger 123 and the ninth heat exchanger 181 are evaporators. The air in the passenger compartment first passes through the ninth heat exchanger 181, and the refrigerant in the ninth heat exchanger 181 absorbs the heat of the air in the passenger compartment. The moisture in the air in the air-conditioning box of the passenger compartment condenses into water droplets in the air-conditioning box and then is discharged, thereby reducing the humidity of the air entering the passenger compartment; thereafter, the air in the passenger compartment with reduced humidity is dissipated through the eighth heat exchanger 18 as a condenser, and the refrigerant in the eighth heat exchanger 18 releases heat to the air in the passenger compartment, so that the air passing through the eighth heat exchanger 18 is heated up, thereby achieving the effect of heating and dehumidification in winter.

[0081] When the ambient temperature is low in winter, the thermal management system is in heating mode for a long time, and the third sub-heat exchanger 121, the fourth sub-heat exchanger 122 and the fifth sub-heat exchanger 123 as evaporators will produce frost. At this time, the thermal management system can start the defrost mode. Figure 6In the defrost mode, the first throttling device 31 is in a throttling state, the third throttling device 33 is in a cut-off state, the third flow path switching device 63 is in a third working state, the fourth flow path switching device 64 is in a sixth working state, the sixteenth interface 65a of the fifth flow path switching device 65 is connected to the seventeenth interface 65b, the sixteenth interface 65a is not connected to the eighteenth interface 65c, the first pump 51 is turned on, the second pump 52 is turned off, the fourth pump 54 is turned off, and the fifth pump 55 is turned on. The second compressor 22 is in an inoperative state, and the auxiliary system is not running. The connectivity relationship of the components in the main refrigerant system is the same as the connectivity relationship of the components in the battery rapid heat dissipation mode. I will not go into details here. In the main coolant system, the motor heat exchange assembly 42, the tenth heat exchange part 192, the second branch e, the second heat exchange part 112, the fifth pump 55 and the battery heat exchange assembly 41 are connected in sequence to form a loop.

[0082] In the defrosting mode, the third sub-heat exchanger 121, the fourth sub-heat exchanger 122 and the fifth sub-heat exchanger 123 act as condensers, the first heat exchanger 11 acts as an evaporator, and the first heat exchange part 111 and the second heat exchange part 112 can exchange heat. The refrigerant in the third sub-heat exchanger 121, the fourth sub-heat exchanger 122 and the fifth sub-heat exchanger 123 can release heat to the air, which is beneficial to the defrosting of the third sub-heat exchanger 121, the fourth sub-heat exchanger 122 and the fifth sub-heat exchanger 123. Since the motor heat exchange component 42, the battery heat exchange component 41 and the second heat exchange component 112 are connected to form a loop, the refrigerant circulating in the first heat exchange part 111 can absorb the heat of the motor heat exchange component 42 and the battery heat exchange component 41, so that the heat of the motor heat exchange component 42 and the battery heat exchange component 41 can be recycled.

[0083] According to another specific embodiment of the thermal management system of the present application, refer to Figure 8As shown, its structure is basically the same as that of the above embodiment, and its working principle is also roughly the same as that of the above embodiment, the difference is that: the thermal management system includes a third pump 53; the third pump 53, the battery heat exchange component 41, the fourth heat exchange part 132 and the second heat exchange part 112 can be connected in sequence to form a loop; the thermal management system includes a first branch c, the first branch c is connected in parallel with the fourth heat exchange part 132, the battery heat exchange component 41, the second heat exchange part 112, the third pump 53 and the first branch c can be connected to form a loop; the thermal management system includes a first flow The first flow path switching device 61 includes a first interface 61a, a second interface 61b and a third interface 61c. The first interface 61a is connected to the fourth heat exchange part 132, the second interface 61b is connected to the first branch c, and the third interface 61c is connected to the battery heat exchange component 41; the first flow path switching device 61 includes a seventh working state and an eighth working state. In the seventh working state, the first interface 61a is connected to the third interface 61c, and in the eighth working state, the first interface 61a is connected to the second interface 61b.

[0084] Figure 8It is shown that the thermal management system of this embodiment is in the battery rapid heat dissipation mode. In the battery rapid heat dissipation mode, the first throttling device 31 is in the throttling state, the second throttling device 32 is in the throttling state, the third throttling device 33 is in the cut-off state, the third flow path switching device 63 is in the third working state, the fourth flow path switching device 64 is in the fifth working state, the sixteenth interface 65a of the fifth flow path switching device 65 is connected to the eighteenth interface 65c, the sixteenth interface 65a is not connected to the seventeenth interface 65b, and the first flow path switching device 61 is in the seventh working state; the circulation path of the main refrigerant system is: the outlet of the first compressor 21 is connected to the ninth interface 63b, the ninth interface 63b is connected to the eighth interface 63a, the eighth interface 63a is connected to the ninth heat exchange part 191, the ninth heat exchange part 191 is connected to the first port 121a of the third sub-heat exchanger, The ninth heat exchange part 191 is connected to the first port 122a of the fourth sub-heat exchanger, the second port 121b of the third sub-heat exchanger is connected to the first port 123a of the fifth sub-heat exchanger, the second port 122b of the fourth sub-heat exchanger is connected to the first port 123a of the fifth sub-heat exchanger, the second port 123b of the fifth sub-heat exchanger is connected to the second heat exchange part 812, the second heat exchange part 812 is connected to the first port 31a of the first throttling device, the second port 31b of the first throttling device is connected to the first port 111a of the first heat exchange part, the second port 111b of the first heat exchange part is connected to the tenth interface 63c, the tenth interface 63c is connected to the eleventh interface 63d, the eleventh interface 63d is connected to the gas-liquid separator 71, the gas-liquid separator 71 is connected to the first heat exchange part 811, and the first heat exchange part 811 is connected to the inlet of the first compressor 22. The circulation path of the main coolant is: the motor heat exchange component 42, the fifth pump 55, the seventh heat exchange part 171, the sixth heat exchanger 16 and the tenth heat exchange part 192 are connected to form a loop, one end of the fourth flow path f is connected to the fourteenth interface 64c, the other end of the fourth flow path f is connected to the fifteenth interface 64d, and the fourth flow path f is not connected to the flow path where the battery heat exchange component 41 is located. The circulation path of the auxiliary refrigerant system is: the outlet of the second compressor 22 is connected to the first port 172a of the eighth heat exchange part, the second port 172b of the eighth heat exchange part is connected to the first port 141a of the fifth heat exchange part, the second port 141b of the fifth heat exchange part is connected to the first port 32a of the second throttling device, the second port 32b of the second throttling device is connected to the third heat exchange part 131, and the third heat exchange part 131 is connected to the inlet of the second compressor 22.The circulation path of the auxiliary coolant system is as follows: the first port 142a of the sixth heat exchange part is connected to the first port 151a of the first sub-heat exchanger, the first port 142a of the sixth heat exchange part is connected to the first port 152a of the second sub-heat exchanger, the second port 151b of the first sub-heat exchanger is connected to the second port 142b of the sixth heat exchange part, and the second port 152b of the second sub-heat exchanger is connected to the second port 142b of the sixth heat exchange part; the battery heat exchange assembly 41 is connected to the fourth heat exchange part 132, the fourth heat exchange part 132 is connected to the thirteenth interface 64b, the thirteenth interface 64b is connected to the thirteenth interface 64a, the thirteenth interface 64a is connected to the second heat exchange part 112, the second heat exchange part 112 is connected to the third pump 53, and the third pump 53 is connected to the battery heat exchange assembly 41.

[0085] When the thermal management system of this embodiment is in the second cooling mode, the first flow path switching device 61 is in the seventh working state, the battery heat exchange assembly 41 is in communication with the fourth heat exchange part 132, the fourth heat exchange part 132 is in communication with the thirteenth interface 64b, the thirteenth interface 64b is in communication with the thirteenth interface 64a, the thirteenth interface 64a is in communication with the second heat exchange part 112, the second heat exchange part 112 is in communication with the third pump 53, and the third pump 53 is in communication with the battery heat exchange assembly 41. When the thermal management system of this embodiment is in the first cooling mode, heating mode, heating and dehumidification mode and defogging mode, the first flow path switching device 61 is in the eighth working state, the battery heat exchange assembly 41 is in communication with the first branch c, the first branch c is in communication with the thirteenth interface 64b, the thirteenth interface 64b is in communication with the thirteenth interface 64a, the thirteenth interface 64a is in communication with the second heat exchange part 112, the second heat exchange part 112 is in communication with the third pump 53, and the third pump 53 is in communication with the battery heat exchange assembly 41. The flow relationship of the remaining components in each mode is the same as that of the above embodiment.

[0086] In this embodiment, the battery heat exchange assembly 41, the second heat exchange part 112 and the fourth heat exchange part 132 can be connected to form a loop, so that the battery can exchange heat with the coolant flowing through the second heat exchange part 112, and can also exchange heat with the coolant flowing through the fourth heat exchange part 132, thereby increasing the ways to regulate the battery temperature.

[0087] In this embodiment, the battery heat exchange component 41, the second heat exchange part 112 and the fourth heat exchange part 132 can be connected to form a loop. Compared with the first flow path a and the second flow path b in parallel in the above embodiment, the battery heat exchange component 41, the second heat exchange part 112 and the fourth heat exchange part 132 can be connected to form a loop, and only one pump, namely, the third pump 53, is required. The first flow path a and the second flow path b are connected in parallel, and a separate pump, namely, the first pump 51 and the second pump 52, is required in each flow path. However, the flow rate of the third pump 53 is larger than that of the second pump 52, and the flow rate of the third pump 53 is larger than that of the first pump 51.

[0088] According to another specific embodiment of the thermal management system of the present application, refer to Fig. 9 As shown, its structure is basically the same as that of the above embodiment, and its working principle is also roughly the same as that of the above embodiment, the difference is that: the auxiliary refrigerant system also includes a second flow path switching device 62; the second flow path switching device 62 includes a fourth interface 62a, a fifth interface 62b, a sixth interface 62c and a seventh interface 62d, the fourth interface 62a is connected to the outlet of the second compressor 22, the fifth interface 62b is connected to the third heat exchange part 131, the sixth interface 62c is connected to the inlet of the second compressor 22, and the seventh interface 62d is connected to the fifth heat exchange part 141; the second flow The path b switching device 62 includes a first working state and a second working state. In the first working state, the fourth interface 62a is connected to the seventh interface 62d, the fifth interface 62b is connected to the sixth interface 62c, the fourth interface 62a is not connected to the fifth interface 62b, and the sixth interface 62c is not connected to the seventh interface 62d; in the second working state, the fourth interface 62a is connected to the fifth interface 62b, the seventh interface 62d is connected to the sixth interface 62c, the fourth interface 62a is not connected to the seventh interface 62d, and the fifth interface 62b is not connected to the sixth interface 62c.

[0089] refer to Fig. 9As shown, in the battery rapid heat dissipation mode, the first throttling device 31 is in a throttling state, the second throttling device 32 is in a throttling state, the third throttling device 33 is in a cut-off state, the third flow path switching device 63 is in a third working state, the fourth flow path switching device 64 is in a fifth working state, the sixteenth interface 65a of the fifth flow path switching device 65 is connected to the eighteenth interface 65c, the sixteenth interface 65a is not connected to the seventeenth interface 65b, the second flow path switching device 62 is in the first working state, the first pump 51 is turned on, the second pump 52 is turned on, the fourth pump 54 is turned on, and the fifth pump 55 is turned on. The circulation path of the main refrigerant system is as follows: the outlet of the first compressor 21 is communicated with the ninth interface 63b, the ninth interface 63b is communicated with the eighth interface 63a, the eighth interface 63a is communicated with the ninth heat exchange part 191, the ninth heat exchange part 191 is communicated with the first port 121a of the third sub-heat exchanger, the ninth heat exchange part 191 is communicated with the first port 122a of the fourth sub-heat exchanger, the second port 121b of the third sub-heat exchanger is communicated with the first port 123a of the fifth sub-heat exchanger, and the second port 122b of the fourth sub-heat exchanger is communicated with the first port 123a of the fifth sub-heat exchanger. The second port 123b of the fifth sub-heat exchanger is connected to the second heat exchange part 812, the second heat exchange part 812 is connected to the first port 31a of the first throttling device, the second port 31b of the first throttling device is connected to the first port 111a of the first heat exchange part, the second port 111b of the first heat exchange part is connected to the tenth interface 63c, the tenth interface 63c is connected to the eleventh interface 63d, the eleventh interface 63d is connected to the gas-liquid separator 71, the gas-liquid separator 71 is connected to the first heat exchange part 811, and the first heat exchange part 811 is connected to the inlet of the first compressor 22. The circulation path of the main coolant is: the first pump 51 is connected to the battery heat exchange assembly 41, the battery heat exchange assembly 41 is connected to the thirteenth interface 64b, the thirteenth interface 64b is connected to the twelfth interface 64a, the twelfth interface 64a is connected to the second heat exchange part 112, and the second heat exchange part 112 is connected to the first pump 51; the motor heat exchange assembly 42, the fifth pump 55, the seventh heat exchange part 171, the sixth heat exchanger 16 and the tenth heat exchange part 192 are connected to form a loop, one end of the fourth flow path f is connected to the fourteenth interface 64c, the other end of the fourth flow path f is connected to the fifteenth interface 64d, and the fourth flow path f is not connected to the flow path where the battery heat exchange assembly 41 is located.

[0090] The circulation path of the auxiliary refrigerant system is: the outlet of the second compressor 22 is connected to the fourth interface 62a, the fourth interface 62a is connected to the seventh interface 62d, the seventh interface 62d is connected to the first port 172a of the eighth heat exchange unit, the second port 172b of the eighth heat exchange unit is connected to the first port 141a of the fifth heat exchange unit, the second port 141b of the fifth heat exchange unit is connected to the first port 32a of the second throttling device, the second port 32b of the second throttling device is connected to the third heat exchange unit 131, the third heat exchange unit 131 is connected to the fifth interface 62b, the fifth interface 62b is connected to the sixth interface 62c, and the sixth interface 62c is connected to the inlet of the second compressor 22. The circulation path of the auxiliary coolant system is: the fourth heat exchange part 132, the second pump 52, and the battery heat exchange assembly 41 are connected to form a loop; the first port 142a of the sixth heat exchange part is connected to the first port 151a of the first sub-heat exchanger, the first port 142a of the sixth heat exchange part is connected to the first port 152a of the second sub-heat exchanger, the second port 151b of the first sub-heat exchanger is connected to the second port 142b of the sixth heat exchange part, and the second port 152b of the second sub-heat exchanger is connected to the second port 142b of the sixth heat exchange part 142.

[0091] In this embodiment, the thermal management system also includes a battery rapid heat absorption mode. When the battery in the vehicle needs to be heated up quickly, such as in a pure electric vehicle in winter parking fast charging condition, in order to ensure that the battery can work normally, the thermal management system needs to quickly heat up the battery, and at this time the thermal management system can start the battery rapid heat absorption mode.

[0092] refer to Fig.10In the battery rapid heat absorption mode, the first throttling device 31 is in a throttling state, the second throttling device 32 is in a throttling state, the third throttling device 33 is in a cut-off state, the second flow path switching device 62 is in a second working state, the third flow path switching device 63 is in a fourth working state, the fifth flow path switching device 65 is in a fifth working state, the first pump 51 is turned on, the second pump 52 is turned on, the fourth pump 54 is turned on, and the fifth pump 55 is turned on. The circulation path of the main refrigerant system is as follows: the outlet of the first compressor 21 is connected to the ninth interface 63b, the ninth interface 63b is connected to the tenth interface 63c, the tenth interface 63c is connected to the first heat exchange part 111, the first heat exchange part 111 is connected to the second heat exchange part 812, the second heat exchange part 812 is connected to the fifth sub-heat exchanger 123, the fifth sub-heat exchanger 123 is connected to the third sub-heat exchanger 121, the fifth sub-heat exchanger 123 is connected to the fourth sub-heat exchanger 122, the third sub-heat exchanger 121 is connected to the ninth heat exchange part 191, the fourth sub-heat exchanger 122 is connected to the ninth heat exchange part 191, the ninth heat exchange part 191 is connected to the eighth interface 63a, the eighth interface 63a is connected to the ninth interface 63b, the ninth interface 63b is connected to the gas-liquid separator 71, the gas-liquid separator 71 is connected to the first heat exchange part 811, and the first heat exchange part 811 is connected to the inlet of the first compressor 21. In the main coolant system, the first pump 51, the battery heat exchange assembly 41 and the second heat exchange part 112 are connected in sequence to form a loop; the motor heat exchange assembly 42, the tenth heat exchange part 192 and the second branch e are connected in sequence to form a loop. The circulation path of the auxiliary refrigerant system is: the second compressor 22, the fourth interface 62a, the fifth interface 62b, the third heat exchange part 131, the second throttling device 32, the fifth heat exchange part 141 and the eighth heat exchange part 172 are connected in sequence to form a loop. The circulation path of the auxiliary coolant system is: the fourth heat exchange part 132, the second pump 52 and the battery heat exchange assembly 41 are connected in sequence to form a loop; the first port 142a of the sixth heat exchange part is connected to the first port 151a of the first sub-heat exchanger, the first port 142a of the sixth heat exchange part is connected to the first port 152a of the second sub-heat exchanger, the second port 151b of the first sub-heat exchanger is connected to the second port 142b of the sixth heat exchange part, and the second port 152b of the second sub-heat exchanger is connected to the second port 142b of the sixth heat exchange part 142.

[0093] In the battery rapid heat absorption mode, the first heat exchanger 11 and the third heat exchanger 13 are condensers, and the third sub-heat exchanger 121, the fourth sub-heat exchanger 122, the fifth sub-heat exchanger 123 and the fourth heat exchanger 14 are evaporators. The battery heat exchange assembly 41 is connected to the second heat exchange part 112, and the coolant circulating in the second heat exchange part 112 can absorb the heat of the refrigerant circulating in the first heat exchange part 111, so the battery can absorb the heat of the refrigerant in the first heat exchange part 111. The battery heat exchange assembly 41 is connected to the fourth heat exchange part 132, and the coolant circulating in the fourth heat exchange part 132 can absorb the heat of the refrigerant circulating in the third heat exchange part 131, so the battery can absorb the heat of the refrigerant in the third heat exchange part 131. That is, the battery can absorb the heat of the refrigerant in the first heat exchange part 111 and the third heat exchange part 131 at the same time, so that the battery can heat up quickly.

[0094] The thermal management system in the present application can simultaneously start the main and auxiliary systems to meet the needs when the battery needs to dissipate heat or absorb heat quickly, and can only start the main system under normal working conditions, such as heating and cooling in the passenger compartment; this setting can enable each component in the thermal management system to perform its optimal performance under various working conditions, and will not make the compressor and other components oversized to meet special working conditions (such as the battery needs to dissipate heat or absorb heat quickly, so that each component cannot perform its optimal performance under normal working conditions.

[0095] The above is only a preferred embodiment of the present application and does not constitute any form of limitation to the present application. Although the present application has been disclosed as a preferred embodiment as above, it is not intended to limit the present application. Any technician familiar with the profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present application. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application still falls within the scope of the technical solution of the present application.

Claims

1. A thermal management system, characterized in that: It includes a main system and a sub-system, the main system includes a main refrigerant system and a main coolant system; The main system includes a first heat exchanger (11), the first heat exchanger (11) includes a first heat exchange portion (111) and a second heat exchange portion (112) that are not connected, the first heat exchange portion (111) and the second heat exchange portion (112) being capable of heat exchange, and the main refrigerant system includes a first compressor (21), a second heat exchanger (12) and a first throttling device (31); The auxiliary system includes an auxiliary refrigerant system and an auxiliary coolant system, the auxiliary system includes a third heat exchanger (13), the third heat exchanger (13) includes a third heat exchange part (131) and a fourth heat exchange part (132) that are not connected, the third heat exchange part (131) and the fourth heat exchange part (132) are capable of heat exchange, the auxiliary refrigerant system includes a second compressor (22), a fourth heat exchanger (14) and a second throttling device (32), and the thermal management system includes a battery heat exchange component (41); The thermal management system includes a battery rapid heat dissipation mode, in which: the outlet of the first compressor (21) is communicated with the first port (12a) of the second heat exchanger, the second port (12b) of the second heat exchanger is communicated with the first port (31a) of the first throttling device, the second port (31b) of the first throttling device is communicated with the first port (111a) of the first heat exchange part, and the second port (111b) of the first heat exchange part is communicated with the inlet of the first compressor (21); the battery heat exchange assembly (41) is communicated with the second heat exchange part (112); The outlet of the second compressor (22) is in communication with the first port (14a) of the fourth heat exchanger, the second port (14b) of the fourth heat exchanger is in communication with the first port (32a) of the second throttling device, the second port (32b) of the second throttling device is in communication with the first port (131a) of the third heat exchange portion, and the second port (131b) of the third heat exchange portion is in communication with the inlet of the second compressor (22); the battery heat exchange assembly (41) is in communication with the fourth heat exchange portion (132); The main refrigerant system further includes a third throttling device (33), a fourth throttling device (34), a ninth heat exchanger (181) and an eighth heat exchanger (18); the thermal management system further includes a cooling mode, in which: the outlet of the first compressor (21) is connected to the first port (12a) of the second heat exchanger, the second port (12b) of the second heat exchanger is connected to the first port (31a) of the first throttling device, the second port (31b) of the first throttling device is connected to the first port (111a) of the first heat exchange portion, and the first heat exchanger (12a) of the first compressor (21) is connected to the first port (12a) of the second heat exchanger. The second port (111b) of the heat section is in communication with the inlet of the first compressor (21), the second port (12b) of the second heat exchanger is in communication with the third throttling device (33), the third throttling device (33) is in communication with the ninth heat exchanger (181), the ninth heat exchanger (181) is in communication with the fourth throttling device (34), the fourth throttling device (34) is in communication with the eighth heat exchanger (18), and the eighth heat exchanger (18) is in communication with the inlet of the first compressor (21); the second compressor (22) is in a stopped state, and the auxiliary system is not in operation; The auxiliary refrigerant system further includes a second flow path switching device (62), the second flow path switching device (62) including a fourth interface (62a), a fifth interface (62b), a sixth interface (62c) and a seventh interface (62d), the fourth interface (62a) being in communication with the outlet of the second compressor (22), the fifth interface (62b) being in communication with the third heat exchange portion (131), the sixth interface (62c) being in communication with the inlet of the second compressor (22), and the seventh interface (62d) being in communication with the fourth heat exchanger (14); The second flow path switching device (62) includes a first working state and a second working state. In the first working state, the fourth interface (62a) is in communication with the seventh interface (62d), the fifth interface (62b) is in communication with the sixth interface (62c), the fourth interface (62a) is not in communication with the fifth interface (62b), and the sixth interface (62c) is not in communication with the seventh interface (62d); in the second working state, the fourth interface (62a) is in communication with the fifth interface (62b), the seventh interface (62d) is in communication with the sixth interface (62c), the fourth interface (62a) is not in communication with the seventh interface (62d), and the fifth interface (62b) is not in communication with the sixth interface (62c); The thermal management system further includes a battery rapid heat absorption mode, in which: the outlet of the first compressor (21) is communicated with the second port (111b) of the first heat exchange portion, the first port (111a) of the first heat exchange portion is communicated with the second port (31b) of the first throttling device, the first port (31a) of the first throttling device is communicated with the second port (12b) of the second heat exchanger, and the first port (12a) of the second heat exchanger is communicated with the inlet of the first compressor (21); The outlet of the second compressor (22) is communicated with the fourth interface (62a) of the second flow path switching device (62), the fifth interface (62b) of the second flow path switching device (62) is communicated with the second port (131b) of the third heat exchange part, the first port (131a) of the third heat exchange part is communicated with the second port (32b) of the second throttling device, the first port (32a) of the second throttling device is communicated with the second port (14b) of the fourth heat exchanger, the first port (14a) of the fourth heat exchanger is communicated with the seventh interface (62d) of the second flow path switching device (62), the sixth interface (62c) of the second flow path switching device (62) is communicated with the inlet of the second compressor (22), and the second flow path switching device (62) is in the second working state.

2. The thermal management system according to claim 1, characterized in that The main coolant system includes a first flow path (a) and a first pump (51), the first pump (51) and the second heat exchange part (112) are connected to the first flow path (a), and the auxiliary coolant system includes a second flow path (b) and a second pump (52), the second pump (52) and the fourth heat exchange part (132) are connected to the second flow path (b); In the battery rapid heat dissipation mode: the first flow path (a) is connected to the battery heat exchange component (41) to form a loop, and the second flow path (b) is connected to the battery heat exchange component (41) to form a loop. After the coolant passes through the battery heat exchange component (41), it is divided into two paths, one flowing to the first flow path (a) and the other flowing to the second flow path (b). The coolant after flowing through the first flow path (a) and the coolant after flowing through the second flow path (b) merge and flow together to the battery heat exchange component (41).

3. The thermal management system according to claim 1, wherein: The thermal management system includes a third pump (53); In the battery rapid heat dissipation mode: the battery heat exchange component (41), the third pump (53), the second heat exchange part (112), and the fourth heat exchange part (132) are connected to form a loop.

4. The thermal management system according to claim 3, characterized in that: The thermal management system comprises a first branch (c), The thermal management system includes a first flow path switching device (61), the first flow path switching device (61) including a first interface (61a), a second interface (61b) and a third interface (61c), the first interface (61a) being in communication with the battery heat exchange component (41), the second interface (61b) being in communication with the first branch (c), and the third interface (61c) being in communication with the fourth heat exchange portion (132); In the battery rapid heat dissipation mode: the first interface (61a) is connected to the third interface (61c), the first interface (61a) is not connected to the second interface (61b), and the battery heat exchange component (41), the second heat exchange part (112), the third pump (53) and the fourth heat exchange part (132) can be connected to form a loop.

5. The thermal management system according to claim 1, wherein: The fourth heat exchanger (14) includes a fifth heat exchange portion (141) and a sixth heat exchange portion (142) that are not connected, and the fifth heat exchange portion (141) and the sixth heat exchange portion (142) are capable of heat exchange, and the auxiliary coolant system includes a fifth heat exchanger (15) and a third flow path (d), and the fifth heat exchanger (15) and the sixth heat exchange portion (142) are connected to the third flow path (d), and the third flow path (d) is not connected to the flow path where the battery heat exchange component (41) is located; In the battery rapid heat dissipation mode: the fifth heat exchanger (15) is connected to the sixth heat exchange part (142) to form a loop.

6. The thermal management system according to claim 5, characterized in that: The fifth heat exchanger (15) includes a first sub-heat exchanger (151) and a second sub-heat exchanger (152); In the battery rapid heat dissipation mode: the first port (151a) of the first sub-heat exchanger is in communication with the first port (142a) of the sixth heat exchange unit, the first port (152a) of the second sub-heat exchanger is in communication with the first port (142a) of the sixth heat exchange unit, the second port (151b) of the first sub-heat exchanger is in communication with the second port (142b) of the sixth heat exchange unit, and the second port (152b) of the second sub-heat exchanger is in communication with the second port (142b) of the sixth heat exchange unit.

7. The thermal management system according to claim 6, characterized in that: The second heat exchanger (12) includes a third sub-heat exchanger (121), a fourth sub-heat exchanger (122), and a fifth sub-heat exchanger (123); In the battery rapid heat dissipation mode: the first port (121a) of the third sub-heat exchanger is communicated with the inlet of the first compressor (21), the first port (122a) of the fourth sub-heat exchanger is communicated with the inlet of the first compressor (21), the second port (121b) of the third sub-heat exchanger is communicated with the first port (123a) of the fifth sub-heat exchanger, the second port (122b) of the fourth sub-heat exchanger is communicated with the first port (123a) of the fifth sub-heat exchanger, and the second port (123b) of the fifth sub-heat exchanger is communicated with the first port of the first throttling device (31).

8. The thermal management system according to claim 7, characterized in that: The main coolant system further includes a motor heat exchange component (42) and a sixth heat exchanger (16); In the battery rapid heat dissipation mode: the motor heat exchange component (42) is in communication with the sixth heat exchanger (16).

9. The thermal management system according to claim 8, characterized in that: The third sub-heat exchanger (121) and the fourth sub-heat exchanger (122) are respectively located on opposite sides of the length direction of the fifth sub-heat exchanger (123); the length direction of the third sub-heat exchanger (121) intersects with the length direction of the fifth sub-heat exchanger (123) at a first point (A); the third sub-heat exchanger (121) rotates around the first point (A) by a first angle α relative to the fifth sub-heat exchanger (123); the length direction of the fourth sub-heat exchanger (122) intersects with the length direction of the fifth sub-heat exchanger (123) at a second point (B); the fourth sub-heat exchanger (122) rotates around the second point (B) by a second angle β relative to the fifth sub-heat exchanger (123); the first angle α and the second angle β are both obtuse angles.

10. The thermal management system according to claim 9, characterized in that: The first sub-heat exchanger (151) and the second sub-heat exchanger (152) are respectively located on opposite sides of the fifth sub-heat exchanger (123) in the length direction, and the sixth heat exchanger (16) is located between the first sub-heat exchanger (151) and the second sub-heat exchanger (152); The thermal management system further comprises a first air supply device (91), a second air supply device (92) and a third air supply device (93); the first air supply device (91), the third sub-heat exchanger (121) and the first sub-heat exchanger (151) are arranged side by side; the second air supply device (92), the fourth sub-heat exchanger (122) and the second sub-heat exchanger (152) are arranged side by side; and the third air supply device (93), the fifth sub-heat exchanger (123) and the sixth heat exchanger (16) are arranged side by side; The air sent out by the first air supply device (91) can pass through the first sub-heat exchanger (151) and the third sub-heat exchanger (121), the air sent out by the second air supply device (92) can pass through the second sub-heat exchanger (152) and the fourth sub-heat exchanger (122), and the air sent out by the third air supply device (93) can pass through the fifth sub-heat exchanger (123) and the sixth heat exchanger (16). Along the air supply direction of the first air supply device (91), the third sub-heat exchanger (121) is located before the first sub-heat exchanger (151), and the third sub-heat exchanger (121) is located before the first sub-heat exchanger (151). Between the sub-heat exchanger (151) and the first air supply device (91), along the air supply direction of the second air supply device (92), the fourth sub-heat exchanger (122) is located before the second sub-heat exchanger (152), and the fourth sub-heat exchanger (122) is located between the second sub-heat exchanger (152) and the second air supply device (92), along the air supply direction of the third air supply device (93), the sixth heat exchanger (16) is located before the fifth sub-heat exchanger (123), and the sixth heat exchanger (16) is located between the fifth sub-heat exchanger (123) and the third air supply device (93); The length direction of the first sub-heat exchanger (151) is parallel to the length direction of the third sub-heat exchanger (121), and the length direction of the second sub-heat exchanger (152) is parallel to the length direction of the fourth sub-heat exchanger (122); the length direction of the sixth heat exchanger (16) is parallel to the length direction of the fifth sub-heat exchanger (123); the air supply direction of the first air supply device (91) is perpendicular to the length direction of the third sub-heat exchanger (121), the air supply direction of the second air supply device (92) is perpendicular to the length direction of the fourth sub-heat exchanger (122), and the air supply direction of the third air supply device (93) is perpendicular to the length direction of the fifth sub-heat exchanger (123).

11. The thermal management system according to claim 10, wherein: The thermal management system further comprises a seventh heat exchanger (17), the seventh heat exchanger (17) comprising a seventh heat exchange portion (171) and an eighth heat exchange portion (172) which are not connected, and the seventh heat exchange portion (171) and the eighth heat exchange portion (172) are capable of performing heat exchange; In the battery rapid heat dissipation mode, the seventh heat exchange portion is connected between the sixth heat exchanger (16) and the motor heat exchange assembly (42), and the eighth heat exchange portion is connected between the inlet of the second compressor (22) and the third heat exchange portion (131).

Images