Fluid control assembly

Abstract

A fluid control assembly. A first connecting member (101) provided with a first high-temperature flow channel and a second connecting member (102) provided with a first low-temperature flow channel are separated and spaced apart from each other. The first connecting member (101) and the second connecting member (102) are not in contact with each other, preventing direct transfer of heat between the first connecting member (101) and the second connecting member (102). Therefore, the heat of a medium circulating in the first high-temperature flow channel is not easily transferred to the medium circulating in the first low-temperature flow channel, thereby reducing harmful heat transfer.

Description

Fluid control assembly

[0001] This application claims priority to the following three Chinese patent applications, the entire contents of which are incorporated herein by reference:

[0002] 1. A fluid control assembly and a thermal management system, filed with the China Patent Office on August 10, 2024, application number 202411096180.8, and entitled "Fluid control assembly and thermal management system".

[0003] 2. A fluid control assembly, filed with the China Patent Office on August 10, 2024, application number 202411096106.6, and entitled "Fluid control assembly".

[0004] 3. A fluid control assembly, filed with the China Patent Office on August 10, 2024, application number 202411100587.3, and entitled "Fluid control assembly". TECHNICAL FIELD

[0005] The present application relates to the technical field of thermal management, in particular to a fluid control assembly for a vehicle. BACKGROUND

[0006] In a thermal management system, different working modes are achieved by switching and throttling communication of multiple valves. For example, in a vehicle thermal management system, multiple flow paths are integrated on the same substrate, and the refrigerant flowing in the flow paths has high, medium, and low temperatures. The temperature difference between the refrigerants can be exchanged through the substrate, and harmful heat transfer can reduce the performance of the thermal management system. SUMMARY

[0007] The purpose of the present application is to provide a fluid control assembly that can reduce harmful heat transfer.

[0008] To achieve the above purpose, the present application adopts the following technical solution:

[0009] A fluid control assembly, characterized in that it comprises a first connecting member and a second connecting member, the first connecting member and the second connecting member are separate and have a gap, the first connecting member has at least a first high-temperature flow channel, the second connecting member has a first low-temperature flow channel, the first connecting member comprises a first compressor interface portion, the opening of the first compressor interface portion is in communication with the first high-temperature flow channel, and the second connecting member comprises an evaporator interface portion, the opening of at least one evaporator interface portion is in communication with the first low-temperature flow channel.

[0010] In the technical scheme provided in the application, the first connecting piece provided with the first high-temperature flow channel is separately arranged with the second connecting piece provided with the first low-temperature flow channel, the first connecting piece and the second connecting piece are not in contact, and the heat between the first connecting piece and the second connecting piece is not directly transmitted, so that the heat of the medium flowing in the first high-temperature flow channel is not transmitted to the medium flowing in the first low-temperature flow channel, which is beneficial to reduce the harmful heat transmission. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 is a perspective structural schematic view of one embodiment of the fluid control assembly provided in the application;

[0012] Fig. 2 is a perspective structural schematic view of a second view of Fig. 1;

[0013] Fig. 3 is a perspective structural schematic view of a carrying substrate in Fig. 1;

[0014] Fig. 4 is a sectional structural schematic view of the fluid control assembly in Fig. 1;

[0015] Fig. 5 is a perspective structural schematic view of a first module in Fig. 1 from one view;

[0016] Fig. 6 is a perspective structural schematic view of Fig. 5 from a second view;

[0017] Fig. 7 is an exploded structural schematic view of Fig. 5;

[0018] Fig. 8 is a perspective structural schematic view of a heat exchange device in Fig. 5 from one view;

[0019] Fig. 9 is a perspective structural schematic view of a valve body assembly in Fig. 5;

[0020] Fig. 10 is a structural schematic view of Fig. 9 from a second view;

[0021] Fig. 11 is a structural schematic view of Fig. 9 from a third view;

[0022] Fig. 12 is a perspective structural schematic view of a first valve body in Fig. 9 from one view;

[0023] Fig. 13 is a perspective structural schematic view of a second valve body in Fig. 9 from one view;

[0024] Fig. 14 is a structural schematic view of the second valve body in Fig. 9 from a second view;

[0025] Fig. 15 is a sectional structural schematic view of A-A in Fig. 14;

[0026] Fig. 16 is a sectional structural schematic view of B-B in Fig. 14;

[0027] Fig. 17 is a partial sectional structural schematic view of a head of a liquid storage device in Fig. 4;

[0028] FIG. 18 is a perspective view of a second embodiment of a fluid control assembly according to the present application;

[0029] FIG. 19 is a perspective view of a third embodiment of a fluid control assembly according to the present application;

[0030] FIG. 20 is a perspective view of the third embodiment of the fluid control assembly of FIG. 19 from a second perspective;

[0031] FIG. 21 is an exploded perspective view of the third embodiment of the fluid control assembly of FIG. 19;

[0032] FIG. 22 is a perspective view of the third embodiment of the fluid control assembly of FIG. 19 from a third perspective;

[0033] FIG. 23 is a perspective view of a valve body assembly of the third embodiment of the fluid control assembly of FIG. 19 from a first perspective;

[0034] FIG. 24 is a perspective view of the valve body assembly of the third embodiment of the fluid control assembly of FIG. 19 from a second perspective;

[0035] FIG. 25 is a perspective view of the valve body assembly of the third embodiment of the fluid control assembly of FIG. 19 from a third perspective;

[0036] FIG. 26 is a perspective view of a first valve body of the valve body assembly of FIG. 23 from a first perspective;

[0037] FIG. 27 is a cross-sectional view of the first valve body of FIG. 26 taken along line F-F;

[0038] FIG. 28 is a perspective view of a second valve body of the valve body assembly of FIG. 23 from a first perspective;

[0039] FIG. 29 is a cross-sectional view of the second valve body of FIG. 28 taken along line C-C;

[0040] FIG. 30 is a cross-sectional view of the second valve body of FIG. 28 taken along line D-D;

[0041] FIG. 31 is a cross-sectional view of the second valve body of FIG. 28 taken along line E-E;

[0042] FIG. 32 is a cross-sectional view of the second valve body of FIG. 28 taken along line H-H;

[0043] Symbol explanation: 1, first module; X, control module; 10, connecting piece; 12, control box; 13, control component; 1301, switching component; 1302, throttling component; 13011, first switching component; 13012, second switching component; 131, first valve component; 132, third valve component; 133, second valve component; 134, first throttling component; 135, second throttling component; T, sensor; 136, third throttling component; 137, fourth valve component; 138, fifth valve component; 1001, first flow channel; 1002, third flow channel; 1003, second flow channel; 1004, fourth flow channel; 1001a, first sub-flow channel; 1001b, second sub-flow channel; 1001c, third sub-flow channel; 1002a, fourth sub-flow channel; 1002b, fifth sub-flow channel; 1003a, sixth sub-flow channel; 1003b, seventh sub-flow channel; 1004a, eighth sub-flow channel; 1004b, ninth sub-flow channel; 1001d, tenth sub-flow channel; 1002c, eleventh sub-flow channel; 1003c, twelfth sub-flow channel; 101, first connecting piece; 102, second connecting piece; 1011, first mounting cavity; 1012, third mounting cavity; 1021, second mounting cavity; 1022, first throttling mounting cavity; 1023, second throttling mounting cavity; 1024, sixth mounting cavity; 1025, seventh mounting cavity; 1013, eighth mounting cavity; T0, sensor mounting cavity; 11, interface part; 1101, internal interface part; 11011, first internal interface part; 11012, second internal interface part; 1102, external interface part; 1103, evaporator interface part; 111, first compressor interface part; 112, second compressor interface part; 113, first interface part; 114, second interface part; 115, first communication interface part; 116, second communication interface part; 117, second evaporator interface part; 118, eighth interface part; 119, first evaporator interface part; 120, tenth interface part; 121, eleventh interface part; 122, external evaporator interface part; 123, thirteenth interface part; 124, fourteenth interface part; 125, fifteenth interface part; 126, second external evaporator interface part; 127, seventeenth interface part; 128, third communication interface part; 16, communication assembly; 1601, first communication pipe; 1602, second communication pipe; 1602a, first sub-communication pipe; 1602b, second sub-communication pipe; 1602c, third sub-communication pipe; 1603, third communication pipe; 1603a, fourth sub-communication pipe; 1603b, fifth sub-communication pipe; 1603c, sixth sub-communication pipe; 1603d, seventh sub-communication pipe; 1603e, eighth sub-communication pipe; 17, matching part; 171, first matching part; 172, second matching part; R, heat insulation part; 19, limiting groove part; 14, heat exchange device; 1401, first heat exchange channel; 1402, second heat exchange channel; 1403, third heat exchange channel;141, heat exchange interface part; 1411, first heat exchange interface part; 1412, second heat exchange interface part; 1413, third heat exchange interface part; 1414, fourth heat exchange interface part; 1415, external heat exchange interface part; 15, liquid storage device; 51, liquid storage interface part; 511, first opening part; 512, second opening part; 513, outlet part; 514, third opening part; 2, second module; 26, bearing base; 261, flow-through part; 260, cooling liquid flow channel; 21, pump part; 22, cooling liquid valve part; 262, fixing part; 263, mounting part; 264, cooling liquid tank; 3, bearing frame. DETAILED DESCRIPTION

[0044] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a variety of ways other than those described herein without departing from the spirit of the present application, and it is understood that similar modifications can be made by those skilled in the art in the light of the foregoing description. Therefore, it is not intended to limit the present application to the following specific embodiments disclosed in this description.

[0045] The terms "first", "second", and the like in the present specification are merely used to distinguish one component from another component having the same name, and do not necessarily require or imply that there is any such actual relationship or order between the components. In the present specification, the term "fixed connection or limiting connection", wherein the fixed connection includes welding, bonding, threaded connection, and the limiting connection includes clamping, can be "fixed connection or limiting connection" without special description.

[0046] It should be noted that the up, down, left, right, front, back, and the like mentioned in the present specification are based on the orientation in the drawings of the present specification, and are merely for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In the present specification, the axial direction and the direction are parallel to each other, which means that the included angle between the axial direction and the direction is within the range of 0±10 degrees, and not the absolute parallel relationship that the included angle between the axial direction and the direction is 0 degrees; the axial direction and the direction are perpendicular to each other, which means that the included angle between the axial direction and the direction is within the range of 90±10 degrees, and not the absolute perpendicular relationship that the included angle between the axial direction and the direction is 90 degrees. The "one-piece structure" mentioned in the present specification refers to a structure that cannot be disassembled, such as one-piece injection molding, welding connection, bonding connection, etc.

[0047] The fluid control assembly can be applied to a thermal management system, wherein the thermal management system can be a vehicle thermal management system, such as a new energy vehicle thermal management system. Of course, the application field of the fluid control assembly in the embodiments of the present application is not limited to the description herein, and can also be applied to other fields, such as household air conditioners, energy storage systems, etc.

[0048] The present application will be further described below in conjunction with the drawings and specific embodiments:

[0049] Embodiment one:

[0050] As shown in FIGS. 1-17, the present embodiment provides a fluid control assembly, which comprises a first module 1 and a second module 2, the first module 1 comprises a control module X, the control module X comprises a connecting piece 10, a control component 13 and a control box 12, the connecting piece 10 has a flow channel and a mounting cavity, the control component 13 is mounted on the connecting piece 10, the control component 13 comprises a switching component 1301 and a throttling component 1302, the switching component 1301 can communicate or cut off the flow channel connected with the mounting cavity corresponding to the switching component 1301, the throttling component 1302 can throttle the flow channel connected with the mounting cavity corresponding to the throttling component 1302, the driving components of the control component 13 are integrated in the control box 12, each driving component is electrically connected with a circuit board, the openings of the mounting cavities of the connecting piece 10 are oriented in the same direction, the mounting cavities are staggered arranged, the space of the circumferential side of the mounting cavity with a circular cross section is fully utilized, which can make the connecting piece 10 compact in structure, at least part of the control component 13 is located in the mounting cavity, at least part of the rotor assembly of the control component 13 is located in the cavity of the driving component, the rotor assembly acts according to the signal applied by the driving component, the action of the rotor assembly can control the switch of the control component 13, the control box 12 can uniformly control the action of the control component 13, the integration of the driving components makes the driving components easy to install and simple in structure.

[0051] The first module 1 comprises a heat exchange device 14, a liquid storage device 15, and a communication assembly 16. The communication assembly 16 has a communication channel allowing the liquid storage cavity of the liquid storage device 15, the heat exchange channel of the heat exchange device 14, and the flow channel of the connecting piece 10 to communicate with each other. The second module 2 comprises a bearing base 26 made of plastic. The bearing base 26 has a flow-through part 261 with a cooling liquid flow channel 260 inside. The bearing base 26 is provided with two pump components 21 and one cooling liquid valve component 22. The pump components 21 can provide power to the cooling liquid in the cooling liquid flow channel 260. The cooling liquid valve component 22 can adjust the communication relationship between different cooling liquid flow channels 260. In other embodiments, the pump components 21 and the cooling liquid valve component 22 can be electrically connected with the circuit board in the control box 12 to realize the control of the control components 13, the pump components 21, and the cooling liquid valve component 22 by one control module X. The bearing base 26 has a cooling liquid interface part. The cooling liquid flow channel 260 communicates with the opening of the cooling liquid interface part. The cooling liquid interface part is connected with other components of the thermal management system. The medium in the cooling liquid flow channel 260 can flow to the components that need thermal management through the opening. The components that need thermal management include two or more of the electric drive, the battery or the battery cooler, the radiator, and the heater core. In this embodiment, the heat exchange device 14 of the first module 1 can perform thermal management on the battery. The third heat exchange channel 1403 of the heat exchange device 14 can flow the cooling liquid. The third heat exchange channel 1403 communicates with the cooling liquid flow channel 260.

[0052] As shown in FIG. 3, the bearing base 26 comprises a mounting part 263. The mounting part 263 and the flow-through part 261 are integrated. The mounting part 263 comprises a hollow bracket and a clamp matching the outer dimensions of the liquid storage device 15. In this embodiment, the liquid storage device 15 is in a cylindrical structure. The hollow bracket is a corresponding semicylindrical groove. The clamp is bolted to the hollow bracket to fasten the liquid storage device 15 on the mounting part 263. The bearing base 26 comprises a fixing part 262. The connecting piece 10 and the heat exchange device 14 each comprise a matching part 17. The matching part 17 corresponds to the fixing part 262 one by one. The matching part 17 and the fixing part 262 are fixedly connected. Specifically, the fixing part 262 and the matching part 17 are detachably bolted. One of the fixing part 262 and the matching part 17 is a through hole structure, and the other has a thread inside. The heat exchange device 14 and the connecting piece 10 can be fixed on the bearing base 26 by a fastener. In a specific embodiment, the matching part 17 of the connecting piece 10 and the matching part 17 of the heat exchange device 14 are both threaded blind holes. The fixing part 262 of the bearing base 26 is a through hole structure. In other embodiments, the fixing part 262 can be provided with a threaded insert for threaded connection with the fastener.

[0053] As shown in FIG. 1-4, the at least partially carrying substrate 26 or the flow passage 261 extends in a plate shape, the extension direction of the flow passage 261 is consistent with the extension direction of the plate of the heat exchange device 14, the control assembly X, the heat exchange device 14 and the liquid storage device 15 are located on the same side of the carrying substrate 26 and are fixedly connected with the carrying substrate 26, the control assembly X, the heat exchange device 14 and the liquid storage device 15 are arranged along the extension surface of the carrying substrate 26, a first direction H is defined, the control assembly X and the heat exchange device 14 are arranged along the first direction H, the axial direction of the liquid storage device 15 is parallel to the first direction H, the extension direction of the plate of the heat exchange device 14 is parallel to the first direction H, along the radial direction of the liquid storage device 15, the at least partially control assembly X and the heat exchange device 14 are located on the same side of the liquid storage device 15. In the embodiment, the control assembly X and the heat exchange device 14 are located on the same side of the liquid storage device 15, in other embodiments, along the axial direction of the liquid storage device 15, part of the control module X is located on one side of the liquid storage device 15. A first surface S is defined, the first surface S is perpendicular to the first direction H, the first surface S is parallel to the stacking direction of the heat exchange device 14, along the stacking direction of the heat exchange device 14, the heat exchange device 14 is connected with the communication assembly 16, the connecting piece 10 is connected with the communication assembly 16, as shown in FIG. 4, the projection of the communication assembly 16 and the flow passage 261 on the first surface S at least partially overlaps, the staggered arrangement of the communication assembly 16 and the flow passage 261 makes the thickness of the fluid control assembly smaller in the stacking direction of the heat exchange device 14, which is beneficial to the miniaturization of the fluid control assembly. In other embodiments, the communication assembly 16 can also be a flow channel plate assembly, the control assembly X and the heat exchange device 14 are fixedly connected or positionally connected with the flow channel plate assembly, the projection of the flow channel plate assembly and the flow passage 261 on the first surface at least partially overlaps. In other embodiments, any one of the control module X and the heat exchange device 14 can have at least partial overlap with the projection of the flow passage 261 on the first surface S, which reduces the thickness dimension of the carrying substrate on which the control module X or the heat exchange device 14 is installed.

[0054] Specifically, the connecting piece 10 and the heat exchange device 14 at least partially overlap in the projection on the first surface S, and / or the control box 12 and the heat exchange device 14 at least partially overlap in the projection on the first surface S. In the embodiment, as shown in FIG. 4, part of the first connecting piece 101 and part of the second connecting piece 102 overlap with the heat exchange device 14 in the projection on the first surface S, and part of the control box 12 overlaps with the heat exchange device 14 in the projection on the first surface S. In other embodiments, one of the first connecting piece 101 and the second connecting piece 102 at least partially overlaps with the heat exchange device 14 in the projection on the first surface S. At least one of the connecting piece 10 and the control box 12 at least partially overlaps with the heat exchange device 14 in the projection on the first surface S, and the connecting piece 10 and / or the control box 12 with a larger occupied space are arranged on the side of the heat exchange device 14, which is beneficial to improve the space utilization of the fluid control assembly. In addition, in the embodiment, as shown in FIG. 7, the multiple mounting cavities of the connecting piece 10 are opened towards the same direction, the axis direction of the control component 13 is parallel to the stacking direction of the plates of the heat exchange device 14, the control box 12 and the connecting piece 10 are arranged along the axis direction of the control component 13, part of the control component 13 is mounted in the mounting cavities of the connecting piece 10 from the same direction, and the other part is located in the cavity of the control box 12, that is, the control box 12 is located on the side of the connecting piece 10 close to the control component 13, so as to realize the unified control of the control box 12 on the control component 13. In other embodiments, the thickness of the heat exchange device 14 is equal to the overall thickness of the control assembly X, and the length of the heat exchange device 14 is consistent with the length of the control assembly X, that is, the control assembly X and the heat exchange device 14 completely overlap in the projection on the first surface S.

[0055] In addition, in the embodiment, the connecting assembly 16 and the connecting piece 10 are separately arranged, the connecting assembly 16 adopts a connecting pipe structure, and the connecting piece 10 is used for mounting the control component 13. Compared with the structure of the flow channel plate provided with the control component in the prior art, such a design has a simple structure and is easy to process. In addition, the structure of the connecting pipe makes the fluid control assembly lighter in weight, the connecting pipe is easy to bend, and the arrangement positions of the connecting piece 10, the heat exchange device 14 and the liquid storage device 15 have a larger degree of freedom. The connecting relationship of the connecting piece 10, the heat exchange device 14 and the liquid storage device 15 can be realized by appropriately adjusting the length or bending angle of the connecting pipe.

[0056] In one specific embodiment, the stacking direction of the heat exchange device 14 is horizontal, the axial direction of the liquid storage device 15 is parallel to the direction of gravity, and the control assembly X is located above the heat exchange device 14 along the axial direction of the liquid storage device 15, which means that the connecting member 10 is located above the heat exchange device 14. This arrangement facilitates the outflow of the refrigerant in the connecting member 10, thereby reducing the risk of blockage of the control component 13 installed on the connecting member 10. Along the radial direction of the liquid storage device 15, the first connecting member 101 and the second connecting member 102 are arranged side by side, and the second connecting member 102 is arranged closer to the liquid storage device 15 than the first connecting member 101, so that the communication assembly 16 connecting the liquid storage device 15 and the second connecting member 102 is shorter, facilitating the flow of the refrigerant in the liquid storage device 15 through the shorter communication assembly 16 to the throttling component 1302. In other embodiments, the stacking direction of the heat exchange device 14 is parallel to the direction of gravity, and the axial direction of the liquid storage device 15 is also parallel to the direction of gravity. That is, the axial direction of the liquid storage device 15 is perpendicular to the stacking direction of the plates of the heat exchange device 14, or the axial direction of the liquid storage device 15 is parallel to the stacking direction of the plates of the heat exchange device 14. This allows the fluid control assembly to be suitable for different arrangement spaces.

[0057] The carrying base 26 includes a cooling liquid tank 264, the cavity of the cooling liquid tank 264 is in communication with the cooling liquid flow channel 260, and the cooling liquid tank 264 is used for storing cooling liquid and supplementing the second module 2 with cooling liquid. The flow-through part 261 of the carrying base 26 and the cooling liquid tank 264 are of an integrated structure, which saves the step of separately installing the cooling liquid tank 264. In one specific embodiment, the carrying base 26 includes a main plate and a cover plate, the cover plate is welded to the main plate, the flow channel groove and the liquid storage groove are located on at least one of the main plate and the cover plate, a portion of the cover plate and the corresponding main plate are spliced to form the flow-through part 261, and another portion of the cover plate and the corresponding main plate are spliced to form the cooling liquid tank 264. The mounting part 263 and the flow-through part 261 are of an integrated structure, or they can be formed by welding the two side plates.

[0058] As shown in FIG. 1-2, in the embodiment, the control module X of the first module 1, the heat exchange device 14, the liquid storage device 15, and the pump component 21 and the coolant valve component 22 of the second module 2 are arranged on the same side of the bearing base 26, the heat exchange device 14 is arranged at the center position, and the other components are arranged at the circumferential side of the heat exchange device 14. The structure is compact, along the gravity direction, the control module X and the heat exchange device 14 are arranged along the first direction H, and the heat exchange device 14 and the liquid storage device 15 are arranged perpendicular to the first direction H. In this way, the control module X, the heat exchange device 14, and the liquid storage device 15 are arranged on the same plane, and the pump component 21 and the coolant valve component 22 are also arranged on the same plane. The length of the control module X is shorter than the length of the bearing base 26, and the control module X is arranged at a relatively intermediate position in the length direction of the bearing base 26, so that the two ends of the bearing base 26 form a free space, or in other words, there is a free space above the coolant valve component 22 and the liquid storage device 15. In the embodiment, along the length direction of the connecting piece 10, at least part of the coolant tank 264 is arranged on both sides of the connecting piece 10, so that the space utilization rate of the fluid control assembly is improved. Specifically, perpendicular to the first direction H, the coolant tank 264 is located on the circumferential side of the connecting piece 10. Specifically, the connecting piece 10 is substantially a cuboid structure, and the circumferential side of the connecting piece 10 includes four side portions, one of which is provided with the control box 12, and the other three side portions are provided with part of the structure of the coolant tank 264. The parts of the first module 1 and the parts of the second module 2 are arranged on the same side of the bearing base 26, which facilitates the management of the parts of the fluid control assembly, and makes the opposite side of the bearing base 26 relatively flat, facilitating the installation of the fluid control assembly.

[0059] As shown in FIG. 1-3, the bearing base 26 includes a barrier portion Z, at least part of the first connecting piece 101 is located on one side of the barrier portion Z, and at least part of the second connecting piece 102 is located on the opposite side of the barrier portion Z. The thermal conductivity of the material of the barrier portion Z is less than the thermal conductivity of the material of the first connecting piece 101, which can effectively reduce heat transfer compared with the connecting piece 10 of an integral structure. Generally, the material of the connecting piece 10 is aluminum or other metal materials. In the embodiment, the barrier portion Z is of an integral structure with the bearing base 26, and the material of the barrier portion Z is also plastic. The thermal conductivity of plastic is smaller than that of aluminum. In a specific embodiment, the cavity of the barrier portion Z stores a medium, such as coolant, and the thermal conductivity of the medium is less than that of the material of the first connecting piece 101, which can also help to reduce harmful heat transfer. In the embodiment, the cavity of the barrier portion Z is in communication with the cavity of the coolant tank 264, and further in communication with the coolant flow channel 260.

[0060] Specifically, as shown in FIG. 6 and FIG. 8, the heat exchange passage of the heat exchange device 14 includes a first heat exchange passage 1401, a second heat exchange passage 1402 and a third heat exchange passage 1403. The first heat exchange passage 1401 flows the high-temperature refrigerant flowing in from the liquid storage cavity. The second heat exchange passage 1402 flows the low-temperature refrigerant flowing in from the first low-temperature flow channel L1 of the connecting component 10. The third heat exchange passage 1403 flows the cooling liquid, such as water. In the present embodiment, the medium in the first heat exchange passage 1401 can exchange heat with part of the medium in the second heat exchange passage 1402. In addition, the medium in the second heat exchange passage 1402 can exchange heat with the medium in the third heat exchange passage 1403.

[0061] The heat exchange device 14 is a plate heat exchanger. The heat exchange interface part 141 of the heat exchange device 14 includes a first heat exchange interface part 1411, a second heat exchange interface part 1412, a third heat exchange interface part 1413, a fourth heat exchange interface part 1414 and an external heat exchange interface part 1415. The external heat exchange interface part 1415 is located on the side of the heat exchange device 14 away from the communication assembly 16. The external heat exchange interface part 1415 is used to connect with the heat management components outside the fluid control assembly. In the present embodiment, the external heat exchange interface part 1415 is connected with the interface part of the third heat exchanger in the heat management system. In addition, the four heat exchange interface parts 141 are located on the side of the heat exchange device 14 close to the communication assembly 16, which is convenient for connecting with the communication assembly 16. One end of the first heat exchange passage 1401 is in communication with the opening of the first heat exchange interface part 1411, and the other end is in communication with the opening of the second heat exchange interface part 1412. One end of the second heat exchange passage 1402 is in communication with the opening of the third heat exchange interface part 1413, and the other end is in communication with the opening of the fourth heat exchange interface part 1414. The opening of the external heat exchange interface part 1415 is in communication with the second heat exchange passage 1402 from the other side. The heat exchange device 14 includes a cooling liquid inlet part and a cooling liquid outlet part. The two ends of the third heat exchange passage 1403 are in communication with the opening of the cooling liquid inlet part and the opening of the cooling liquid outlet part, respectively. The heat exchange device 14 is used as an evaporator and integrates the intermediate heat exchange function of the high-temperature refrigerant and the low-temperature refrigerant, which reduces the separate arrangement of the intermediate heat exchanger and makes the fluid control assembly compact in structure.

[0062] As shown in FIG. 4 and FIG. 5, the liquid storage device 15 has a liquid storage cavity capable of communicating with the flow channel of the connecting piece 10 or the connecting piece 10. The liquid storage device 15 includes a head and a barrel. In the embodiment, the head of the liquid storage device 15 is located below the barrel, and the liquid storage device 15 is in an inverted structure. The head covers the opening of the barrel to form a liquid storage cavity, and the head is provided with a liquid storage interface part 51, specifically including a first opening part 511, a second opening part 512, a third opening part 514 and an outlet part 513. As shown in FIG. 17, the head has a first inlet channel and a second inlet channel, one end of the first inlet channel communicates with the opening of the first opening part 511, and the other end communicates with the liquid storage cavity, one end of the second inlet channel communicates with the opening of the second opening part 512, and the other end communicates with the liquid storage cavity. The liquid storage device 15 includes two one-way components, which are respectively arranged in the first inlet channel and the second inlet channel. The one-way components are arranged to allow the medium to flow into the liquid storage cavity only from the opening of the first inlet part or the opening of the second inlet part, and prohibit the medium in the liquid storage cavity from flowing out from the opening of the first inlet part or the opening of the second inlet part. The head is provided with an outlet channel, one end of the outlet channel communicates with the liquid storage cavity, and the other end communicates with the opening of the outlet part 513, and the liquid refrigerant in the liquid storage cavity can flow out through the opening of the outlet part 513. The head also has a bypass channel, one end of the bypass channel communicates with the opening of the third opening part 514, and the other end communicates with one end of the second inlet channel close to the second opening part 512, and further communicates with the opening of the second opening part 512. In one working mode, the bypass channel communicates with the first low-temperature flow channel L1 of the second connecting piece 102, the bypass channel flows the low-temperature refrigerant, the part of the second inlet channel communicating with the bypass channel also flows the low-temperature refrigerant, the liquid storage cavity stores the high-pressure refrigerant, and the one-way component can cut off the refrigerant in the second inlet channel from conducting to the liquid storage cavity through the one-way component under the condition of pressure difference. Wherein, the outlet part 513 and the third opening part 514 are arranged on the side of the head close to the communication assembly 16, and the first opening part 511 and the second opening part 512 are arranged on the opposite side of the head, so that the outlet part 513 and the third opening part 514 are connected with the communication assembly 16. The first opening part 511 is connected with the second heat exchanger in the thermal management system where the fluid control assembly is located, and the second opening part 512 is connected with the first heat exchanger in the thermal management system where the fluid control assembly is located. It can also be said that the first opening part 511 and the second opening part 512 are external interface parts of the fluid control assembly, which are arranged on the side away from the communication assembly 16, facilitating installation. The first inlet channel, the second inlet channel, the outlet channel and the bypass channel are formed by machining, and the manufacturing process is simple. The thermal management system adjusts different working modes by the arrangement of the control component 13. The valve component 13 is integrated on the connecting piece 10, and the arrangement of the flow channel on the connecting piece 10 is relatively complex. In the embodiment, the arrangement of the flow channel on the connecting piece 10 is simplified by arranging the bypass channel, so that the structure of the connecting piece 10 is simple.

[0063] As shown in FIGS. 12-16, the flow channel of the connecting piece 10 includes a first flow channel 1001, a second flow channel 1003, a third flow channel 1002, a fourth flow channel 1004, a first mounting cavity 1011 and a third mounting cavity 1012, which are all in communication with the first flow channel 1001, the first flow channel 1001 includes a first sub-flow channel 1001a, a second sub-flow channel 1001b and a third sub-flow channel 1001c, the first sub-flow channel 1001a is in communication with the first mounting cavity 1011 and the third mounting cavity 1012, the second sub-flow channel 1001b is in communication with the first mounting cavity 1011, the first valve component 131 can be in communication or disconnected between the first sub-flow channel 1001a and the second sub-flow channel 1001b, the third sub-flow channel 1001c is in communication with the third mounting cavity 1012, and the third valve component 132 can be in communication or disconnected between the first sub-flow channel 1001a and the third sub-flow channel 1001c; the second mounting cavity 1021 is in communication with the third flow channel 1002, the third flow channel 1002 includes a fourth sub-flow channel 1002a and a fifth sub-flow channel 1002b, the fourth sub-flow channel 1002a and the fifth sub-flow channel 1002b are both in communication with the second mounting cavity 1021, and the third valve component 133 can be in communication or disconnected between the fourth sub-flow channel 1002a and the fifth sub-flow channel 1002b; the first throttling mounting cavity 1022 is in communication with the second flow channel 1003, the second flow channel 1003 includes a sixth sub-flow channel 1003a and a seventh sub-flow channel 1003b, and the first throttling component 134 can throttle the communication between the sixth sub-flow channel 1003a and the seventh sub-flow channel 1003b; the second throttling mounting cavity 1023 is in communication with the fourth flow channel 1004, the fourth flow channel 1004 includes an eighth sub-flow channel 1004a and a ninth sub-flow channel 1004b, and the second throttling component 135 can throttle the communication between the eighth sub-flow channel 1004a and the ninth sub-flow channel 1004b. As shown in FIGS. 7 and 9, the connecting piece 10 further includes a sensor mounting cavity T0, at least part of the sensor T is located in the sensor mounting cavity T0, the sensor mounting cavity T0 is in communication with the fifth sub-flow channel 1002b, the sensor T can detect the temperature and / or pressure of the medium flowing in the fifth sub-flow channel 1002b, the sensor T is electrically connected with the circuit board of the control box 12, and the circuit board can collect the parameters of the sensor T. In the present embodiment, the sensor mounting cavity T0 and the mounting cavity corresponding to the control component 13 are located on the same side of the connecting piece 10 and have the same opening direction, which facilitates the common electrical connection of one control box 12 with the control component 13 and the sensor T.

[0064] The prior art flow channel plate assembly has a communication flow channel, the valve component is directly mounted on the flow channel plate assembly, the valve component controls the communication relationship of the flow channel in the flow channel plate assembly to realize different working modes, the arrangement of the flow channel is relatively complex, the flow channel plate assembly is processed by pressure casting or forging process, and the overall weight is relatively large. The harmful heat transfer is reduced by arranging a heat insulation groove between the high-temperature flow channel and the low-temperature flow channel on the flow channel plate assembly, or the harmful heat transfer is reduced by arranging the high-temperature valve component and the low-temperature valve component in different regions. The flow channel plate assembly in the prior art still has harmful heat transfer as a whole.

[0065] In this embodiment, the flow channel of the connecting piece 10 includes a high-temperature flow channel G and a low-temperature flow channel L, the high-temperature flow channel G includes a first high-temperature flow channel G1 and a second high-temperature flow channel G2, and the low-temperature flow channel L includes a first low-temperature flow channel L1 and a second low-temperature flow channel L2. In this application, the first high-temperature flow channel G1 is defined as the part of the flow channel of the connecting piece 10 between the outlet of the compressor and the inlet of the condenser, the second high-temperature flow channel G2 is defined as the part of the flow channel of the connecting piece 10 between the outlet of the condenser and the inlet of the throttling component 1302, the first low-temperature flow channel L1 is defined as the part of the flow channel of the connecting piece 10 between the outlet of the throttling component 1302 and the inlet of the evaporator, and the second low-temperature flow channel L2 is defined as the part of the flow channel of the connecting piece 10 between the outlet of the evaporator and the inlet of the compressor.

[0066] As shown in FIGS. 9-11, the connecting piece 10 includes a first connecting piece 101 and a second connecting piece 102, the first connecting piece 101 and the second connecting piece 102 are separately arranged with a gap, the first flow channel 1001 is located in the first connecting piece 101, the third flow channel 1002, the second flow channel 1003, and the fourth flow channel 1004 are located in the second connecting piece 102, the third flow channel 1002, the second flow channel 1003, and the fourth flow channel 1004 are arranged at intervals along the arrangement direction of the first connecting piece 101 and the second connecting piece 102, and the third flow channel 1002 is closer to the first connecting piece 101 than the second flow channel 1003 or the fourth flow channel 1004. At least part of the first flow channel 1001 is the first high-temperature flow channel G1, at least part of the second flow channel 1003 is the first low-temperature flow channel L1, and at least part of the third flow channel 1002 is the second low-temperature flow channel L2. In other words, the first connecting piece 101 has at least part of the first high-temperature flow channel G1, the second connecting piece 102 has the first low-temperature flow channel L1, and the two separate structures are arranged with a gap without direct contact, so that the heat is not directly transferred between the first connecting piece 101 and the second connecting piece 102, which is conducive to further reducing the heat transfer between the first high-temperature flow channel G1 and the first low-temperature flow channel L1. The heat transfer between the first high-temperature flow channel G1 and the first low-temperature flow channel L1 in the heat management system is harmful heat transfer, and reducing the harmful heat transfer can further improve the efficiency of the heat management system.

[0067] In other embodiments, the communication assembly 16 can be a plate-to-plate split flow channel plate assembly, the connecting piece 10 is mounted on the flow channel plate assembly, the part of the internal interface 1101 of the connecting piece 10 is connected with the interface of the corresponding flow channel plate assembly, so that the flow channel of the connecting piece 10 is in communication with the flow channel of the flow channel plate assembly, and a heat insulation pad is arranged between the connecting piece 10 and the flow channel plate assembly, which can reduce the heat transfer between the connecting piece 10 and the flow channel plate assembly. The communication assembly 16 in the embodiment includes communication pipes, and the plurality of communication pipes are independently arranged. The communication pipes are lighter in weight compared with the flow channel plate assembly, which is conducive to the lightweight of the fluid control assembly. The bending processing of the communication pipes and the connection of the communication pipes and the connecting piece 10 are more cost-saving compared with the processing of the flow channel plate assembly. In addition, the communication pipes are independently arranged and spaced apart, which further reduces the harmful heat transfer of the fluid control assembly.

[0068] The switching component 1301 includes a plurality of, the first switching component 13011 is mounted on the first connecting piece 101, and the first switching component 13011 can allow the opening of the first compressor interface 111 to be in communication with at least one of the openings of the first interface 113 and the second interface 114. The second switching component 13012 is mounted on the second connecting piece 102, and the throttling component 1302 is mounted on the second connecting piece 102. The second connecting piece 102 has a second high-temperature flow channel G2, and the throttling component 1302 can throttle the communication between the second high-temperature flow channel G2 and the first low-temperature flow channel L1. The second connecting piece 102 also has a second low-temperature flow channel L2, and the second switching component 13012 can adjust the communication relationship of the second low-temperature flow channel L2, or another second switching component 13012 can adjust the communication relationship of the second high-temperature flow channel G2. The switching component 1301 can be a multi-way valve, which can adjust the communication relationship of a plurality of different flow channels in communication with the corresponding mounting cavity. The second switching component 13012 can be integrated with the throttling component 1302 as a multifunctional component, that is, the multifunctional component can adjust the communication relationship of different flow channels in communication with the corresponding mounting cavity, and can also throttle the communication between different flow channels in communication with the corresponding mounting cavity.

[0069] In the embodiment, as shown in FIG. 7, the first switching component 13011 includes a first valve component 131, a third valve component 132, the second switching component 13012 includes a second valve component 133, the throttling component 1302 includes a first throttling component 134 and a second throttling component 135, specifically, the first throttling component 134 is a battery throttling component, and the second throttling component 135 is a heating throttling component. At least part of the first valve component 131 is located in the first installation cavity 1011, at least part of the second valve component 133 is located in the second installation cavity 1021, at least part of the third valve component 132 is located in the third installation cavity 1012, at least part of the first throttling component 134 is located in the first throttling installation cavity 1022, and at least part of the second throttling component 135 is located in the second throttling installation cavity 1023. In the embodiment, the first valve component 131, the third valve component 132 and the second valve component 133 also have the function of adjusting the flow rate and can be used to adjust the flow rate of the communication flow path.

[0070] In the embodiment, any two of the first connecting piece 101, the second connecting piece 102, the heat exchange device 14 and the liquid storage device 15 can be communicated through the communication assembly 16, the connecting piece 10 includes an internal interface part 1101, specifically including a first internal interface part 11011 and a second internal interface part 11012, the first internal interface part 11011 is fixedly connected or positionally connected with the heat exchange interface part 141 of the heat exchange device 14 through at least part of the communication assembly 16, so that the flow channel of the connecting piece 10 can be communicated with the heat exchange channel of the heat exchange device 14; the second internal interface part 11012 is fixedly connected or positionally connected with the liquid storage interface part 51 of the liquid storage device 15 through at least part of the communication assembly 16, so that part of the flow channel of the connecting piece 10 can be communicated with the liquid storage cavity or the bypass channel of the liquid storage device 15; the connecting piece 10 further includes an external interface part 1102, which is connected with other components in the heat management system except the fluid control assembly; an interface part 11 connected with the evaporator in the heat management system is defined as an evaporator interface part 1103, and in a specific embodiment, part of the evaporator interface part 1103 is the internal interface part 1101, and the other part of the evaporator interface part 1103 is the external interface part 1102. As shown in FIGS. 11-16, the interface part 11 of the connecting piece 10 includes seven internal interface parts 1101 and five external interface parts 1102. In the embodiment, the fluid control assembly includes the heat exchange device 14, which can be used as an evaporator, and the interface part 11 of the connecting piece 10 connected with the heat exchange interface part 141 of the heat exchange device 14 is both the internal interface part 1101 and the evaporator interface part 1103, specifically, the evaporator interface part 1103 includes a first evaporator interface part 119 and a second evaporator interface part 117.

[0071] In a heat management system, as shown in FIG. 1, including a compressor, a first heat exchanger, a second heat exchanger, and a third heat exchanger, specifically, the first heat exchanger is used as an external heat exchanger, the second heat exchanger is used as an internal condenser, and the third heat exchanger is used as an internal evaporator, each component in the heat management system is fixedly connected with the components of the fluid control assembly, and then the external heat management components are in communication with the passages in the fluid control assembly to enable different heat management modes to be operated by the control of the fluid control assembly. Specifically, the external interface part 1102 of the connecting piece 10 includes a first compressor interface part 111, a second compressor interface part 112, an external evaporator interface part 122, a first interface part 113, and a second interface part 114. The opening of the first compressor interface part 111 is in communication with the outlet of the compressor, the interface of the second compressor interface part 112 is in communication with the inlet of the compressor, the external evaporator interface part 122 is connected with the interface part of the third heat exchanger, the first interface part 113 is in communication with the interface of the second heat exchanger, and the second interface part 114 is in communication with the interface of the first heat exchanger.

[0072] In this embodiment, the external interface part 1102 is located on the side of the connecting piece 10 away from the heat exchange device 14, and the external interface part 1102 opens in the direction away from the heat exchange device 14, so that the external heat management components are connected with the connecting piece 10 from the same direction, which is convenient for installation. In addition, the connecting piece 10 is substantially a cuboid structure, in addition to including four side parts, it also includes a bottom side and a top side. The heat exchange device 14 is located on the bottom side of the connecting piece 10, and the external interface part 1102 is located on the side of the connecting piece 10 away from the heat exchange device 14, that is, the external interface part 1102 is located on the top side of the connecting piece 10. In summary, the cooling liquid tank 264 is arranged on the spare side of the connecting piece 10, which improves the space utilization rate of the fluid control assembly. As shown in FIG. 18, in a specific embodiment, the fluid control assembly can also not include the cooling liquid tank 264.

[0073] As shown in FIGS. 11 and 16, the opening of the first compressor interface part 111 is in communication with the first sub-passage 1001a, the opening of the second compressor interface part 112 is in communication with the fifth sub-passage 1002b, the opening of the first interface part 113 is in communication with the second sub-passage 1001b, the opening of the second interface part 114 is in communication with the third sub-passage 1001c, and the opening of the external evaporator interface part 122 is in communication with the sixth sub-passage 1003a.

[0074] As shown in FIG. 6, the internal interface part 1101 includes a first communication interface part 115, a second communication interface part 116, the first communication interface part 115 and the second communication interface part 116 being connectable and in communication through the partial communication assembly 16, the opening of the first communication interface part 115 being in communication with the third sub-flow passage 1001c, and the opening of the second communication interface part 116 being in communication with the fourth sub-flow passage 1002a; the heat exchange device 14 being capable of being used as an evaporator, the first internal interface part 11011 including a first evaporator interface part 119, a second evaporator interface part 117, and an eighth interface part 118, the opening of the second evaporator interface part 117 being in communication with the fifth sub-flow passage 1002b, the opening of the eighth interface part 118 being in communication with the sixth sub-flow passage 1003a, and the opening of the first evaporator interface part 119 being in communication with the seventh sub-flow passage 1003b; the second internal interface part 11012 including a tenth interface part 120 and an eleventh interface part 121, the opening of the tenth interface part 120 being in communication with the eighth sub-flow passage 1004a, and the opening of the eleventh interface part 121 being in communication with the ninth sub-flow passage 1004b.

[0075] In one working mode, for example, the refrigeration mode, the first valve component 131 is closed, the third valve component 132 is opened, the second valve component 133 is closed, the first throttling component 134 is opened, the second throttling component 135 is closed, the first high-temperature flow channel G1 includes the first sub-flow channel 1001a, the third sub-flow channel 1001c, and the fourth sub-flow channel 1002a, the second high-temperature flow channel G2 includes the sixth sub-flow channel 1003a, the first low-temperature flow channel L1 includes the seventh sub-flow channel 1003b, and the second low-temperature flow channel L2 includes the fifth sub-flow channel 1002b. The refrigerant flowing out of the compressor flows into the first connecting piece 10 from the opening of the first compressor interface part 111, flows through the first sub-flow channel 1001a and the third sub-flow channel 1001c, and flows out of the opening of the second interface part 114. The refrigerant flows through the first heat exchanger, the liquid accumulator 15, and the heat exchange device 14, reenters the sixth sub-flow channel 1003a, is throttling expanded by the first throttling component 134, flows through the seventh sub-flow channel 1003b, reenters the heat exchange device 14 from the opening of the first evaporator interface part 119, and enters the fifth sub-flow channel 1002b from the opening of the second evaporator interface part 117 after absorbing heat in the heat exchange device 14. The absorbed heat can be the heat of the battery, which is equivalent to refrigerating the battery. Another part of the refrigerant in the sixth sub-flow channel 1003a flows out of the opening of the external evaporator interface part 122, is throttling expanded by the external expansion valve, flows into the third heat exchanger, and absorbs heat in the third heat exchanger to refrigerate the passenger compartment. The refrigerant flowing out of the third heat exchanger reflows to the heat exchange device 14 from the opening of the external heat exchange interface part 1415 of the heat exchange device 14, mixes in the heat exchange device 14, enters the fifth sub-flow channel 1002b from the opening of the second evaporator interface part 117, and flows out of the connecting piece 10 from the opening of the second compressor interface part 112 to reflow to the compressor. The second valve component 133 is closed, so that the fourth sub-flow channel 1002a in the first high-temperature flow channel G1 is not communicated with the fifth sub-flow channel 1002b in the second low-temperature flow channel L2.

[0076] In another working mode, for example, the heating mode, the first valve component 131 is opened, the third valve component 132 is closed, the second valve component 133 is opened, the first throttling component 134 is closed, the second throttling component 135 is opened, the first high-temperature flow channel G1 includes the first sub-flow channel 1001a and the second sub-flow channel 1001b, the second high-temperature flow channel G2 includes the eighth sub-flow channel 1004a, the first low-temperature flow channel L1 includes the ninth sub-flow channel 1004b, and the second low-temperature flow channel L2 includes the third sub-flow channel 1001c, the fourth sub-flow channel 1002a, and the fifth sub-flow channel 1002b. The third valve component 132 is closed, so that the first sub-flow channel 1002a in the first high-temperature flow channel G1 is not communicated with the third sub-flow channel 1001c in the second low-temperature flow channel L2.

[0077] As shown in FIGS. 11-13, the seventh sub-flow passage 1003b is farther away from the first connecting piece 101 than the fifth sub-flow passage 1002b, and the ninth sub-flow passage 1004b is also farther away from the first connecting piece 101 than the fifth sub-flow passage 1002b, which further reduces the heat transfer of the first high-temperature flow passage G1 on the first connecting piece 101 to the first low-temperature flow passage L1. In other words, the first low-temperature flow passage L1 and the second low-temperature flow passage L2 are arranged along the arrangement direction of the first connecting piece 101 and the second connecting piece 102, and the first low-temperature flow passage L1 is farther away from the first connecting piece 101 than the second low-temperature flow passage L2.

[0078] It should be noted that the fluid control assembly can realize different heat management modes by switching the control components, and a flow passage belongs to different flow passage types in different modes. In this case, if a flow passage is referred to as a high-temperature flow passage, it means that in a specific working mode, the flow passage is a high-temperature flow passage. For example, the fourth sub-flow passage 1002a is the first high-temperature flow passage G1 in the cooling mode and the second low-temperature flow passage L2 in the heating mode. The second switching component 13012 can adjust the communication relationship of the second low-temperature flow passage L2. This means that when the second switching component 13012 is open, the flow passage connected to the installation cavity corresponding to the second switching component 13012 can flow and flow out of the evaporator. In some heat management systems, the internal condenser and the external condenser are connected in series, the outlet of the compressor is connected to the inlet of the internal condenser, the outlet of the internal condenser is connected to the first compressor interface part 111 of the fluid control assembly. It should be explained that in the cooling mode, the internal condenser does not work, which is equivalent to a channel. In this case, the temperature of the refrigerant at the outlet of the internal condenser is close to the temperature of the refrigerant at the outlet of the compressor, so the interface part of the fluid control assembly connected to the outlet of the internal condenser can be called the first compressor interface part 111, and the flow passage between the outlet of the internal condenser and the inlet of the external condenser can also be called the first high-temperature flow passage G1. In the heating mode, the internal condenser works, and the external condenser does not work. The flow passage between the outlet of the internal condenser and the inlet of the external condenser is called the second high-temperature flow passage G2.

[0079] As shown in FIG. 5, the communication assembly 16 includes a plurality of split communication pipes, and the communication assembly 16 has a plurality of communication channels, the communication channels passing through both ends of the communication pipes. Specifically, the communication assembly 16 includes a first communication pipe 1601, one end of the first communication pipe 1601 being connected with the first communication interface part 115, and the other end being connected with the second communication interface part 116, so that the third sub-flow passage 1001c and the fourth sub-flow passage 1002a are communicated; one end of a second communication pipe 1602 is connected with the first internal interface part 11011 of the connecting piece 10, and the other end is fixedly connected or positionally connected with the heat exchange interface part 141 of the heat exchange device 14. Specifically, the second communication pipe 1602 includes a first sub-communication pipe 1602a, a second sub-communication pipe 1602b, and a third sub-communication pipe 1602c. One end of the first sub-communication pipe 1602a is connected with the second evaporator interface part 117, and the other end is connected with the fourth heat exchange interface part 1414, so that the fifth sub-flow passage 1002b and the second heat exchange passage 1402 are communicated. One end of the second sub-communication pipe 1602b is connected with the eighth interface part 118, and the other end is connected with the second heat exchange interface part 1412, so that the sixth sub-flow passage 1003a and the first heat exchange passage 1401 are communicated. One end of the third sub-communication pipe 1602c is connected with the first evaporator interface part 119, and the other end is connected with the third heat exchange interface part 1413, so that the seventh sub-flow passage 1003b and the other end of the second heat exchange passage 1402 are communicated. One end of a third communication pipe 1603 is connected with the partial liquid storage interface part 51, and the other end is connected with the second internal interface part 11012 of the connecting piece 10 and / or the heat exchange interface part of the heat exchange device 14. The third communication pipe 1603 includes a fourth sub-communication pipe 1603a and a fifth sub-communication pipe 1603b. The fourth sub-communication pipe 1603a is a three-way pipe. One end of the fourth sub-communication pipe 1603a is connected with the outlet part 513, the other end is connected with the first heat exchange interface part 1411, and the third end is connected with the tenth interface part 120, so that the liquid storage cavity is communicated with the first heat exchange passage 1401 and the eighth sub-flow passage 1004a, respectively. One end of the fifth sub-communication pipe 1603b is connected with the third opening part 514, and the other end is connected with the eleventh interface part 121, so that the bypass passage is communicated with the ninth sub-flow passage 1004b.

[0080] In other embodiments, the heat exchange device 14 can include a first heat exchange device and a second heat exchange device, the first heat exchange device serving as a condenser, and the second heat exchange device serving as an evaporator, two ends of a part of the second communication pipe 1602 being connected to the first connecting member 101 and the first heat exchange device respectively, so that the first high-temperature flow channel G1 communicates with the heat exchange channel of the first heat exchange device, and two ends of another part of the second communication pipe 1602 being connected to the second connecting member 102 and the second heat exchange device respectively, so that the first low-temperature flow channel L1 communicates with the heat exchange channel of the second heat exchange device. When the second connecting member 102 is additionally provided with the second high-temperature flow channel G2, the first heat exchange device can communicate with the second high-temperature flow channel G2 through the other part of the second communication pipe 1602, and the first heat exchange device can be connected to the second connecting member 102.

[0081] In the embodiment, the openings of the communication assembly 16 are oriented in the same direction, and the communication assembly 16 is fixedly connected or positionally connected with the connecting piece 10, the liquid storage device 15, and the heat exchange device 14 in the same direction, that is, the opening of the first communication interface part 115 and the opening of the second communication interface part 116 are oriented in the same direction, facilitating the fixed connection or positionally connection of the first connecting pipe 1601 with the first connecting piece 101 and the second connecting piece 102 in the same direction; the opening of the first internal interface part 11011 and the opening of the heat exchange interface part 141 are oriented in the same direction, facilitating the fixed connection or positionally connection of the second connecting pipe 1602 with the connecting piece 10 and the heat exchange device 14 in the same direction; the opening of the second internal interface part 11012 and the opening of at least part of the liquid storage interface part 51 are oriented in the same direction, facilitating the fixed connection or positionally connection of the third connecting pipe 1603 with the connecting piece 10 and the liquid storage device 15 in the same direction. In the embodiment, along the stacking direction of the plates of the heat exchange device 14, the communication assembly 16 is located on the same side of the connecting piece 10, the heat exchange device 14, and the liquid storage device 15, and the openings of the first internal interface part 11011, the second internal interface part 11012, at least part of the heat exchange interface part 141, and at least part of the liquid storage interface part 51 are oriented in the same direction, facilitating the installation of the communication assembly 16. The connecting pipes of the communication assembly 16 are substantially in U-shaped structures. Specifically, the communication assembly 16 includes welded connecting pipes and articulated connecting pipes, the welded connecting pipes include the first connecting pipe 1601 and the second connecting pipe 1602, the articulated connecting pipes include the third connecting pipe 1603, the first connecting pipe 1601 and the second connecting pipe 1602 are located on the same side of the bearing base 26, part of the third connecting pipe 1603 is located on the opposite side of the bearing base 26, the bearing base 26 includes an avoiding part B, and part of the third connecting pipe 1603 is located in the avoiding part B. Specifically, the two ends of the welded connecting pipe are respectively provided with welded grooves, the welded grooves extend along the axial direction of the connecting pipe, or in other words, a wire drawing process is adopted at the two ends of the welded connecting pipe, when the two ends of the welded connecting pipe are located in the cavities of the interface part 11 and weldedly connected, the provision of the welded grooves can improve the welding performance, and specifically, the welding can be induction welding. The two ends of the articulated connecting pipe are welded with connecting joints, and the connecting joints are bolted with the corresponding liquid storage device 15 or heat exchange device 14. In the embodiment, the liquid storage device 15 is first fixed on the bearing base 26 of the second module 2, then the connecting piece 10 and the heat exchange device 14 of the first module 1 are fixed on the bearing base 26, and the third connecting pipe 1603 is provided as an articulated connecting pipe, facilitating the installation and connection of the fluid control assembly.

[0082] Embodiment Two

[0083] FIGS. 18-30 provide a second fluid control assembly, which is different from the first fluid control assembly in that the fluid control assembly in the embodiment includes a first module 1, and the structure of the first module 1 is similar to that of the first module 1 in the first embodiment. The difference is mainly introduced below.

[0084] As shown in Fig. 18, the fluid control assembly comprises a bearing frame 3, the bearing frame 3 comprises a strip structure, the bearing frame 3 has sufficient supporting strength, no flow channel is arranged on the bearing frame 3, the pressure resistance of the bearing frame 3 does not need to be considered, the material of the bearing frame 3 is metal, generally cast iron or sheet metal is selected, the processing technology of the cast iron and the sheet metal is mature, the manufacturing cost is low, and it is beneficial to reduce the manufacturing cost of the fluid control assembly.

[0085] The bearing frame 3 comprises a fixed part 262, the connecting piece 10 and the heat exchange device 14 respectively comprise a matching part 17, the matching part 17 and the fixed part 262 one-to-one correspond, the matching part 17 and the fixed part 262 are fixedly connected, and specifically the fixed part 262 and the matching part 17 are detachably bolted, and the heat exchange device 14 and the connecting piece 10 are fixed on the bearing frame 3 through fasteners. The bearing frame 3 further comprises a first recess part, which can also be said to be a blind hole structure, the fluid control assembly comprises a pin, the connecting piece 10 comprises a limiting groove part 19, the limiting groove part 19 is also a blind hole structure, the first recess part and the limiting groove part 19 one-to-one correspond, the axis of the first recess part and the limiting groove part 19 overlaps, and the pin is respectively located in the first recess part and the limiting groove part 19. Such a structure plays a role of pre-positioning when the connecting piece 10 and the bearing frame 3 are bolted, and after bolted, the relative displacement of the connecting piece 10 and the bearing frame 3 can be further prevented. The limiting groove part 19 can also be arranged on the heat exchange device 14, and plays a role of pre-positioning for the installation of the heat exchange device 14.

[0086] As shown in FIG. 20 and FIG. 24, the first connecting piece 10 includes a columnar part, and the inner cavity of the columnar part is used to install the control component 13 or the sensor T, that is, at least part of the inner cavity of the columnar part is the mounting cavity of the connecting piece 10 described above, and in the embodiment, the sensor T is not installed on the connecting piece 10. When the control component 13 includes multiple, the columnar part also corresponds to include multiple, and when the inner cavities of the columnar parts have a communication relationship, a channel part is arranged between the columnar parts, and when the inner cavities of the columnar parts do not have a communication relationship, the columnar parts are connected through a connecting plate. The cooperation part 17 and the limiting groove part 19 are also plate structures, which are conducive to reducing the weight of the connecting piece 10, and on the other hand, it is conducive to reducing the heat transfer between different columnar bodies of the connecting piece 10. Specifically, the cooperation part 17 includes a first cooperation part 171, a second cooperation part 172, a third cooperation part 173, a fourth cooperation part 174, a fifth cooperation part 175, a sixth cooperation part 176, and a seventh cooperation part 177. Among them, three cooperation parts 17 are located on the first connecting piece 101, and the other four cooperation parts 17 are located on the second connecting piece 102. The cooperation parts 17 are distributed on the circumferential side of the connecting piece 10, and are claw-shapedly distributed. In other words, each cooperation part 17 has a split structure at one end close to the bearing frame 3, or in other words, the connecting piece 10 has a heat insulation part R. The first cooperation part 171 and the second cooperation part 172 are arranged adjacent to each other, the first cooperation part 171 is located on one side of the heat insulation part R at one end close to the bearing frame 3, and the second cooperation part 172 is located on the other side of the heat insulation part R at one end close to the bearing frame 3. In this way, the heat transfer between the cooperation parts 17 and the heat transfer between the entire connecting piece 10 and the bearing frame 3 can be effectively reduced, and only part of the heat is transferred between the cooperation parts 17 or from the first connecting piece 101 to the second connecting piece 102 through the bearing frame 3. If the first cooperation part 171 is adjacent to a limiting groove part 19, or the first cooperation part 171 is located on one side of the heat insulation part R, and the adjacent limiting groove part 19 is located on the other side of the heat insulation part R, the heat transfer between the first cooperation part 171 and the limiting groove part 19 is reduced, and the heat transfer between the connecting block 10 and the bearing frame 3 is also reduced.

[0087] The fluid control assembly includes a clamp, the clamp is a long strip-shaped plate, the clamp is circumferentially arranged around the liquid storage device 15, and the two ends of the clamp are provided with cooperation parts 17. The cooperation parts 17 are matched with the corresponding fixed parts 262 on the bearing frame 3, and the fasteners are used to bolt connect the cooperation parts 17 of the clamp with the fixed parts 262 of the bearing frame 3. After the fasteners are installed, the clamp is tightly fitted with the liquid storage device 15 from the radial direction, that is, the liquid storage device 15 is fixed on the bearing frame 3 from the radial direction. In addition, part of the fixed parts 262 of the bearing frame 3 is arranged in a bent manner, the head of the liquid storage device 15 includes a cooperation part 17, the bent fixed part 262 is fixedly connected with the cooperation part 17 of the head, and the liquid storage device 15 is conveniently fixed from the axial direction.

[0088] As shown in FIG. 6 and FIG. 20, the control assembly X, the heat exchange device 14 and the liquid storage device 15 are arranged in a clockwise direction in the first embodiment, and are arranged in an anticlockwise direction in the second embodiment.

[0089] In the embodiment, the heat exchange device 14 comprises a second heat exchange channel 1402 (not shown) and a third heat exchange channel 1403, the second heat exchange channel 1402 is used to flow the refrigerant from the flow channel of the connecting piece 10, and the third heat exchange channel 1403 is used to flow the cooling liquid such as water, the medium in the second heat exchange channel 1402 can exchange heat with the medium in the third heat exchange channel 1403. The heat exchange device 14 is a plate heat exchanger, as shown in FIG. 20, the heat exchange device 14 comprises a third heat exchange interface part 1413 and a fourth heat exchange interface part 1414, one end of the second heat exchange channel 1402 is communicated with the opening of the third heat exchange interface part 1413, and the other end is communicated with the opening of the fourth heat exchange interface part 1414, and the two ends of the third heat exchange channel 1403 are respectively communicated with the opening of the cooling liquid inlet part and the opening of the cooling liquid outlet part. In the embodiment, the heat exchange device 14 can be used as an evaporator or a condenser, and can realize the battery heating mode and the battery cooling mode, when the fourth valve part 137 is opened and the fifth valve part 138 is closed, the refrigerant flowing from the first compressor interface part 111 can flow to the second heat exchange channel 1402 of the heat exchange device 14, at this time, the heat exchange device 14 is used as a condenser; when the fourth valve part 137 is closed and the fifth valve part 138 is opened, the refrigerant flowing through the heat exchange device 14 flows from the seventeenth interface part 127 to the liquid storage device 15, and after the gas-liquid separation in the liquid storage device 15, the gaseous refrigerant returns to the compressor.

[0090] The liquid storage device 15 has a liquid storage cavity, and the liquid storage cavity can be communicated with the flow channel of the connecting piece 10. The liquid storage device 15 comprises an upper head, a cylinder and a lower head, the upper head is located above the cylinder in the axial direction of the cylinder, and the lower head is located below the cylinder. The upper head and the lower head are respectively provided with a liquid storage interface part 51, which specifically comprises a first opening part 511, a second opening part 512, a third opening part 514 and an outlet part 513. In the embodiment, the liquid storage device 15 has a gas-liquid separation function and a heat exchange function, that is, the liquid storage device 15 comprises an internal heat exchange channel, the refrigerant flowing from the outlet of the condenser flows in the internal heat exchange channel, the gaseous refrigerant in the liquid storage cavity of the liquid storage device 15 can absorb the heat of the refrigerant in the internal heat exchange channel, the gaseous refrigerant absorbing the heat flows out from the outlet part 513 and returns to the inlet of the compressor, which can reduce the liquid knock phenomenon of the compressor and improve the operating efficiency of the compressor.

[0091] The upper head includes the first opening part 511 and the third opening part 514, and the lower head includes the second opening part 512 and the outlet part 513. One end of the built-in heat exchange channel is in communication with the opening of the second opening part 512, and the other end of the built-in heat exchange channel is in communication with the opening of the third opening part 514. In one specific embodiment, the wall forming the built-in heat exchange channel can be a spiral pipe spiraled in the liquid storage cavity of the liquid storage device 15, or the built-in heat exchange channel is integrated on the cylinder. The upper head includes the first inlet channel, one end of the first inlet channel is in communication with the opening of the seventeenth interface part 127, and the other end is in communication with the liquid storage cavity. The lower head includes the outlet channel, one end of the outlet channel is in communication with the opening of the outlet part 513, and the other end is in communication with the gas phase region of the liquid storage cavity. The gaseous refrigerant in the liquid storage cavity can flow out through the opening of the outlet part 513. In one specific embodiment, the openings of the first opening part 511 and the third opening part 514 are oriented in the axial direction of the liquid storage device 15, and the openings of the outlet part 513 and the second opening part 512 are oriented in the radial direction of the liquid storage device 15. Specifically, the opening of the second opening part 512 is oriented towards the communication assembly 16, and the opening of the outlet part 513 is oriented away from the communication assembly 16.

[0092] In this embodiment, the first switching component 13011 further includes a fourth valve component 137, the second switching component 13012 further includes a fifth valve component 138, and the throttling component 1302 further includes a third throttling component 136. Compared with the first embodiment, the function mode of the thermal management system is more abundant. The third throttling component 136 is an expansion valve arranged in front of the internal evaporator, which is not integrated in the first embodiment. In this embodiment, the third throttling component 136 is integrated, which reduces the scattered arrangement of the control component 13 in the thermal management system and improves the integration degree of the fluid control assembly. The fourth valve component 137 and the fifth valve component 138 are arranged to enable the fluid control assembly to realize the battery heating mode.

[0093] The flow channel of the connecting piece 10 comprises a first flow channel 1001, a second flow channel 1003, a third flow channel 1002, and a fourth flow channel 1004. Different from the first embodiment, the first flow channel 1001 further comprises a tenth sub-flow channel 1001d, the seventh installation cavity 1025 is located in communication with the first flow channel 1001, the first sub-flow channel 1001a is in communication with the first installation cavity 1011, the second installation cavity 1012, and the seventh installation cavity 1025, the tenth sub-flow channel 1001d is in communication with the seventh installation cavity 1025, and the fourth valve component 137 can communicate or disconnect the first sub-flow channel 1001a and the tenth sub-flow channel 1001d; the third flow channel 1002 comprises an eleventh sub-flow channel 1002c, the fifth sub-flow channel 1002b is in communication with the eighth installation cavity 1013 and the second installation cavity 1021, the eleventh sub-flow channel 1002c is in communication with the eighth installation cavity 1013, and the fifth valve component 138 can communicate or disconnect the eleventh sub-flow channel 1002c and the fifth sub-flow channel 1002b; the second flow channel 1003 comprises a twelfth sub-flow channel 1003c, the sixth sub-flow channel 1003a is in communication with the first throttling installation cavity 1022 and the sixth installation cavity 1024, the twelfth sub-flow channel 1003c is in communication with the sixth installation cavity 1024, and the third throttling component 136 can communicate, disconnect, or throttle the twelfth sub-flow channel 1003c and the sixth sub-flow channel 1003a.

[0094] In the embodiment, the interface part 11 of the connecting piece 10 comprises eight internal interface parts 1101 and seven external interface parts 1102. The internal interface part 1101 comprises a first communication interface part 115 and a second communication interface part 116. The first internal interface part 11011 comprises a first evaporator interface part 119, a second evaporator interface part 117, and a third communication interface part 128. The second internal interface part 11012 comprises an eighth interface part 118, a fifteenth interface part 125, and a seventeenth interface part 127. The external interface part 1102 comprises a first compressor interface part 111, a first interface part 113, a second interface part 114, a thirteenth interface part 123, a fourteenth interface part 124, a second external evaporator interface part 126, and an external evaporator interface part 122. The first interface part 113 and the thirteenth interface part 123 are respectively connected to two ends of the second heat exchanger, the second interface part 114 and the fourteenth interface part 124 are respectively connected to two ends of the first heat exchanger, the external evaporator interface part 122 and the second external evaporator interface part 126 are respectively connected to two ends of the third heat exchanger, and the first compressor interface part 111 is connected to the outlet of the compressor. In the embodiment, the refrigerant flows back to the inlet of the compressor from the outlet part 513 of the liquid storage device 15.

[0095] The differences between the two embodiments are as follows: in the first embodiment, the opening of the second evaporator interface part 117 is directly communicated with the fifth sub-flow channel 1002b. In the present embodiment, the fifth valve part 138 is opened, the fifth sub-flow channel 1002b is communicated with the eleventh sub-flow channel 1002c, and then with the opening of the second evaporator interface part 117. The opening of the seventeenth interface part 127 is communicated with the fifth sub-flow channel 1002b. In the first embodiment, the opening of the external evaporator interface part 122 is communicated with the sixth sub-flow channel 1003a. In the first embodiment, the throttling part 1302 corresponding to the third heat exchanger is not integrated. In the present embodiment, the third throttling part 136 is integrated. The third throttling part 136 is opened, and the refrigerant in the sixth sub-flow channel 1003a can be throttled to flow to the twelfth sub-flow channel 1003c, and then from the opening of the external evaporator interface part 122 to the third heat exchanger. In the present embodiment, the opening of the third communication interface part 128 is communicated with the tenth sub-flow channel 1001d. The fourth valve part 137 is opened, the first sub-flow channel 1001a is communicated with the tenth sub-flow channel 1001d, and then with the opening of the third communication interface part 128. The opening of the fifteenth interface part 125 is communicated with the eighth sub-flow channel 1004a. In the heating mode, the refrigerant flows into the connecting piece 10 from the opening of the thirteenth interface part 123. The second throttling part 134 is opened, the eighth sub-flow channel 1004a is communicated with the ninth sub-flow channel 1004b, and then the refrigerant flows out of the connecting piece 10 from the opening of the fourteenth interface part 124. In the cooling mode, the refrigerant flows into the connecting piece 10 from the opening of the fourteenth interface part 124. The second throttling part 135 is opened, the eighth sub-flow channel 1004a is communicated with the ninth sub-flow channel 1004b, and then the refrigerant flows to the built-in heat exchange channel of the liquid storage device 15 from the opening of the fifteenth interface part 125.

[0096] As shown in FIG. 20, the communication assembly 16 comprises a first communication pipe 1601, a first sub-communication pipe 1602a, a third sub-communication pipe 1602c, a sixth sub-communication pipe 1603c, a seventh sub-communication pipe 1603d, and an eighth sub-communication pipe 1603e. The second interface part 114 is separately arranged from the first connecting part 101, which improves the freedom of arrangement of the second interface part 114. The first communication pipe 1601 is a three-way structure, and is fixedly or limitingly connected with the first communication interface part 115 and the second communication interface part 116 respectively. The third end of the first communication pipe 1601 is connected with the second interface part 114, so as to connect the first connecting part 101, the second connecting part 102, and the first interface part 114 into an integrated whole through the first communication pipe 1601, and the structure of the communication pipe can effectively reduce the heat transfer among the three. The first sub-communication pipe 1602a is a three-way structure, and is connected with the second evaporator interface part 117 and the fourth heat exchange interface part 1414 respectively. The third end of the first sub-communication pipe 1602a is connected with the third communication interface part 128, so as to enable the tenth sub-flow channel 1001d and the eleventh flow channel 1002c to communicate with the second heat exchange channel 1402 (not shown). In the embodiment, the first sub-communication pipe 1602a is a branch communication pipe of the second communication pipe 1602, and can communicate the flow channels of the connecting part 10 and the heat exchange channels of the heat exchange device 14, but also can communicate the flow channels of the first connecting part 101 and the flow channels of the second connecting part 102, which means that the second communication pipe 1602 integrates the functional part of the first communication pipe 1601. It needs to be noted that when the second communication pipe 1602 communicates the first connecting part 101 and the second connecting part 102, the second evaporator interface part 117 can also be referred to as the fourth communication interface part. The third sub-communication pipe 1602c comprises a mounting block, which is a three-way structure. The third sub-communication pipe 1602c communicates through the channel in the mounting block. In addition, the mounting block is provided with a sensor T (not shown), which can detect the temperature and / or pressure of the medium flowing through the third sub-communication pipe 1602c. The mounting block facilitates the installation of the sensor T. One end of the sixth sub-communication pipe 1603c is connected with the fifteenth interface part 125, and the other end is connected with the second opening part 512 of the liquid storage device. The sixth sub-communication pipe 1603c can communicate the eighth sub-flow channel 1004a and the built-in heat exchange channel. One end of the seventh sub-communication pipe 1603d is connected with the third opening part 514, and the other end is connected with the eighth interface part 118. The seventh sub-communication pipe 1603d can communicate the built-in heat exchange channel and the sixth sub-flow channel 1003a. One end of the eighth sub-communication pipe 1603e is connected with the seventeenth interface part 127, and the other end is connected with the first opening part 511. The eighth sub-communication pipe 1603e can communicate the fifth sub-flow channel 1002b and the liquid storage cavity.

[0097] In the embodiment, the plurality of control components 13 of the connecting piece 10 are staggered, and the corresponding plurality of mounting cavities are staggered, for example, along the arrangement direction of the first connecting piece 101 and the second connecting piece 102, the second valve component 132 and the third valve component 133 are arranged in one row, and the fourth valve component 137 and the fifth valve component 138 are arranged in another row, as shown in FIGS. 20 and 21. Such arrangement makes the first communication pipe 1601 and the first sub-communication pipe 1602a arranged at least partially in parallel, and the distance between the parallel segments is short, so that the fluid control assembly is compact in structure. Specifically, the distance between the parallel pipe segments of the first communication pipe 1601 and the first sub-communication pipe 1602a is less than the sum of the maximum radius of the second mounting cavity 1012 and the maximum radius of the fourth mounting cavity 1022.

[0098] In the embodiment, the liquid storage device 15 is not connected to the heat exchange device 14 through the communication assembly 16. Along the axial direction of the liquid storage device 15, part of the seventh sub-communication pipe 1603d and part of the eighth sub-communication pipe 1603e are arranged above the liquid storage device 15. In the embodiment, the welded communication pipe includes the first communication pipe 1601, the detachable communication pipe includes the sixth sub-communication pipe 1603c, the seventh sub-communication pipe 1603d, the eighth sub-communication pipe 1603e, and the first sub-communication pipe 1602a, the third sub-communication pipe 1602c, one end of which is connected to the connecting piece 10 is a welded connection, and the other end connected to the heat exchange device 14 is a bolted connection. Such arrangement facilitates the adjustment of the position error during installation of the heat exchange device 14 and the liquid storage device 15 on the bearing frame 3 through detachable connection.

[0099] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and not to limit the technical solutions described in the present application. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the skilled in the art can still modify or equivalently replace the application, and all technical solutions and improvements that do not deviate from the spirit and scope of the present application should be covered within the scope of the claims of the present application.

Claims

1. A fluid control assembly comprising: The fluid control assembly comprises a first connecting piece (101) and a second connecting piece (102), the first connecting piece (101) and the second connecting piece (102) are separate and gap arranged, the first connecting piece (101) has at least part of a first high-temperature flow channel (G1), the second connecting piece (102) has a first low-temperature flow channel (L1), the first connecting piece (101) comprises a first compressor interface part (111), the opening of the first compressor interface part (111) is communicated with the first high-temperature flow channel (G1), the second connecting piece (102) comprises an evaporator interface part (1103), the opening of at least one evaporator interface part (1103) is communicated with the first low-temperature flow channel (L1).

2. The fluid control assembly of claim 1, wherein, The fluid control assembly comprises a barrier part (Z), the thermal conductivity of the material of the barrier part (Z) is less than the thermal conductivity of the material of the first connecting piece (101), at least part of the first connecting piece (101) is located on one side of the barrier part (Z), and at least part of the second connecting piece (102) is located on the other side of the barrier part (Z).

3. The fluid control assembly of claim 2, wherein, The fluid control assembly comprises a bearing substrate (26), the first connecting piece (101) and the second connecting piece (102) are fixedly connected or positionally connected with the bearing substrate (26) respectively, and the bearing substrate (26) is plastic; the bearing substrate (26) has a cooling liquid flow channel (260), the bearing substrate (26) comprises a cooling liquid tank (264), the cooling liquid flow channel (260) is communicated with the cavity of the cooling liquid tank (264), and the bearing substrate (26) comprises a barrier part (Z), the cavity of the barrier part (Z) is communicated with the cavity of the cooling liquid tank (264).

4. The fluid control assembly of claim 2, wherein, The fluid control assembly comprises a bearing frame (3), the first connecting piece (101) comprises a columnar part for mounting a control component (13) or a sensor (T), the first connecting piece (101) comprises a fitting part (17) fixedly connected or positionally connected with the bearing frame (3), the fitting part (17) is plate-shaped, and the bearing frame (3) is metal.

5. The fluid control assembly of any one of claims 1-4, wherein, The fluid control assembly comprises a throttling component (1302) mounted on the second connecting piece (102), the second connecting piece (102) has a second high-temperature flow channel (G2), and the throttling component (1302) can throttle the communication between the second high-temperature flow channel (G2) and the first low-temperature flow channel (L1). And / or, the fluid control assembly comprises a first switching component (13011) mounted on the first connecting piece (101), the first connecting piece (101) comprises a first interface part (113) and a second interface part (114), and the first switching component (13011) can control the opening of the first compressor interface part (111) to be communicated with the opening of the first interface part (113) and the opening of the second interface part (114).

6. The fluid control assembly of claim 5, wherein, The fluid control assembly comprises a first switching component (13011), the first high-temperature flow channel (G1) comprises a first sub-flow channel (1001a) and a second sub-flow channel (1001b), the first connecting piece (101) further has a third sub-flow channel (1001c), the first switching component (13011) can control the first sub-flow channel (1001a) to communicate with the second sub-flow channel (1001b), the first switching component (13011) can cut off the communication between the first sub-flow channel (1001a) and the third sub-flow channel (1001c), the fluid control assembly comprises a second switching component (13012), the second connecting piece (102) comprises a second compressor interface part (112), the second connecting piece (102) has a fourth sub-flow channel (1002a) and a fifth sub-flow channel (1002b), the fifth sub-flow channel (1002b) communicates with the opening of the second compressor interface part (112), the second switching component (13012) is installed on the second connecting piece (102), and the second switching component (13012) can communicate or cut off the fourth sub-flow channel (1002a) and the fifth sub-flow channel (1002b). The fluid control assembly comprises a first communication pipe (1601), the first communication pipe (1601) is fixedly connected or positionally connected with the first connecting piece (101) and the second connecting piece (102) respectively, one end of the first communication pipe (1601) communicates with the fourth sub-flow channel (1002a), and the other end of the first communication pipe (1601) communicates with the third sub-flow channel (1001c).

7. The fluid control assembly of any one of claims 1-4, wherein, The first connecting piece (101) has a first mounting cavity (1011) which communicates with at least part of the flow channel of the first connecting piece (101), the fluid control assembly comprises a first valve component (131), and at least part of the first valve component (131) is located in the first mounting cavity (1011); the second connecting piece has a second mounting cavity (1021) which communicates with at least part of the flow channel of the second connecting piece (102), the fluid control assembly comprises a second valve component (133), and at least part of the second valve component (133) is located in the second mounting cavity (1021), the opening of the first mounting cavity (1011) and the opening of the second mounting cavity (1021) are in the same direction; And / or, the second connecting piece (102) has a first throttling mounting cavity (1022) which communicates with at least part of the flow channel of the second connecting piece (102), the fluid control assembly comprises a first throttling component (134), and at least part of the first throttling component (134) is located in the first throttling mounting cavity (1022), the opening of the first mounting cavity (1011) and the opening of the first throttling mounting cavity (1022) are in the same direction.

8. The fluid control assembly of claim 7, wherein, The fluid control assembly comprises a control box (12), which is fixedly connected or positionally connected with the first connecting piece (101) and the second connecting piece (102) respectively, and is located at the side of the first connecting piece (101) close to the first valve part (131), and can control the action of at least one of the second valve part (133) and the first throttling part (134).

9. The fluid control assembly of claim 7, wherein, The fluid control assembly comprises a heat exchange device (14), a connecting piece (10), and a communication assembly (16), the connecting piece (10) comprises the first connecting piece (101) and the second connecting piece (102), the connecting piece (10) and the heat exchange device (14) are fixedly connected or positionally connected with the communication assembly (16) respectively, at least part of the channel of the communication assembly (16) communicates with the heat exchange channel of the heat exchange device (14) and the flow channel of the connecting piece (10), a first surface (S) is defined, the first surface (S) is parallel to the stacking direction of the heat exchange device (14), along the stacking direction of the heat exchange device (14), the heat exchange device (14) and the connecting piece (10) are located at the same side of the communication assembly (16), the projection of the connecting piece (10) and the heat exchange device (14) on the first surface (S) at least partially overlaps, and / or the connecting piece (10) is provided with a control part (13), the fluid control assembly comprises a control box (12), which can drive the control part (13) to act, and the projection of the control box (12) and the heat exchange device (14) on the first surface (S) at least partially overlaps.

10. The fluid control assembly of claim 9, wherein, The fluid control assembly comprises at least two control parts (13), the control part (13) comprises a rotor assembly, the action of the rotor assembly can control the on-off of the control part (13), the axial direction of the control part (13) is parallel to the stacking direction of the plate of the heat exchange device (14), the control box (12) and the connecting piece (10) are arranged along the axial direction of the control part (13), the projection of the connecting piece (10) and the heat exchange device (14) on the first surface (S) at least partially overlaps, and the projection of the control box (12) and the heat exchange device (14) on the first surface (S) at least partially overlaps.

11. The fluid control assembly of claim 9 or 10, wherein, The communication assembly comprises a first communication pipe (1601) and a second communication pipe (1602), the first communication pipe (1601) is fixedly connected or positionally connected with the first connecting piece (101) and the second connecting piece (102) respectively, a channel of the first communication pipe (1601) can communicate a flow channel of the first connecting piece (101) and a flow channel of the second connecting piece (102), the second communication pipe (1602) is fixedly connected or positionally connected with the second connecting piece (102) and the heat exchange device (14) respectively, and the second communication pipe (1602) can communicate the flow channel of the second connecting piece (102) and a heat exchange channel of the heat exchange device (14).

12. The fluid control assembly of claim 11, wherein, The first connecting piece (101) comprises a first communication interface part (115), an opening of the first communication interface part (115) communicates with a flow channel of the first connecting piece (101), the second connecting piece (102) comprises a second communication interface part (116), an opening of the second communication interface part (116) communicates with a flow channel of the second connecting piece (102), the opening of the first communication interface part (115) and the opening of the second communication interface part (116) are in the same direction, the first communication pipe (1601) is fixedly connected or positionally connected with the first communication interface part (115) and the second communication interface part (116) respectively, and the first communication pipe (1601) communicates the flow channel of the first connecting piece (101) and the flow channel of the second connecting piece (102).

13. The fluid control assembly of claim 12, wherein, The fluid control assembly comprises a first internal interface part (11011), the first internal interface part (11011) is located in at least one of the first connecting piece (101) and the second connecting piece (102), an opening of the first internal interface part (11011) is in the same direction as an opening of the first communication interface part (115), the heat exchange device (14) comprises a heat exchange interface part (141), the second communication pipe (1602) is fixedly connected or positionally connected with the first internal interface part (11011) and at least part of the heat exchange interface part (141) respectively, and the opening of the first internal interface part (11011) is in the same direction as the opening of the heat exchange interface part (141).

14. The fluid control assembly of claim 13, wherein, The fluid control assembly comprises a third communication pipe (1603) and a liquid storage device (15), the fluid control assembly comprises a second internal interface part (11012), the liquid storage device (15) comprises a liquid storage interface part (51), the third communication pipe (1603) is fixedly connected or positionally connected with the second internal interface part (11012) and the liquid storage interface part (51) respectively, an opening of the second internal interface part (11012) is in the same direction as an opening of at least part of the liquid storage interface part (51), and the opening of the first internal interface part (11011) and the opening of the second internal interface part (11012) are in the same direction.

15. The fluid control assembly of claim 1, wherein, The fluid control assembly comprises a liquid storage device (15), a flow-through part (261), a connecting piece (10), a heat exchange device (14) and a communication assembly (16), the connecting piece (10) comprises the first connecting piece (101) and the second connecting piece (102), the liquid storage device (15) is detachably connected with the flow-through part (261) respectively, the communication assembly (16) comprises a first communication pipe (1601), a second communication pipe (1602) and a third communication pipe (1603), the first communication pipe (1601) and the second communication pipe (1602) are located on the same side of the flow-through part (261), and part of the third communication pipe (1603) is located on the opposite side of the flow-through part (261), the second communication assembly (26) comprises a avoiding part (B), at least part of the third communication pipe (1603) is located in the avoiding part (B), the first communication pipe (1601) is welded with the first connecting piece (101) and the second connecting piece (102) respectively, the second communication pipe (1602) is welded with the second connecting piece (102) and the heat exchange device (14) respectively, and the third communication pipe (1603) is detachably connected with the second connecting piece (102) and the liquid storage device (15) respectively.

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