Thermal management assembly, thermal management system and battery pack

Abstract

Provided in the present application are a thermal management assembly, a thermal management system and a battery pack. The thermal management assembly comprises a first thermal management unit and a second thermal management unit that have the same structure, wherein the first thermal management unit comprises a liquid inlet pipe assembly, a liquid outlet pipe assembly and a plurality of thermal management components having flow channels, the liquid inlet pipe assembly and the liquid outlet pipe assembly communicating liquid inlet ends and liquid outlet ends of the flow channels, respectively; the thermal management components of the first thermal management unit and the thermal management components of the second thermal management unit are alternately arranged in sequence; and the pipe assemblies are located at the same end of the thermal management components.

Description

Thermal management components, thermal management system and battery pack

[0001] This application claims priority to Chinese Patent Application No. 202422911373.6, filed with the Chinese Patent Office on November 27, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of battery technology, specifically to pipe connection structures, thermal management components, and batteries. Background Technology

[0003] To maintain battery operation within a suitable temperature range, a thermal management system is required to heat or cool the battery. In related technologies, the thermal management system includes piping, heat pipe components connected to the piping, and a temperature regulation module that regulates the temperature of the heat exchange medium within the piping. Multiple heat pipe components are connected in parallel within the piping. The thermal management components are thermally coupled to the battery cell to regulate its temperature. Invention Overview

[0004] In related technologies, the pipes connected to the thermal management components occupy a large space, resulting in a large space ratio of the thermal management system within the battery pack, which has an adverse effect on the energy density of the battery pack.

[0005] In a first aspect, this application provides a thermal management assembly, which includes multiple thermal management units, at least two of which are a first thermal management unit and a second thermal management unit. The first thermal management unit includes two pipe assemblies and multiple thermal management components. The two pipe assemblies are an inlet pipe assembly and an outlet pipe assembly. The multiple thermal management components are arranged sequentially at intervals along a first direction, and each thermal management component has a flow channel with an inlet end and an outlet end. The inlet pipe assembly connects the inlet ends of the multiple thermal management components, and the outlet pipe assembly connects the outlet ends of the multiple thermal management components. The structure of the second thermal management unit is the same as that of the first thermal management unit. Along the first direction, the thermal management components of the first thermal management unit and the thermal management components of the second thermal management unit are arranged alternately. The pipe assemblies of the first thermal management unit and the pipe assemblies of the second thermal management unit are located at the same end of the thermal management components.

[0006] Secondly, this application provides a thermal management system, which includes an inlet pipe, an outlet pipe, a temperature regulating module, and the aforementioned thermal management components; the inlet pipe is connected to the inlet end of at least two thermal management units; the outlet pipe is connected to the outlet end of at least two thermal management units; the two ports of the temperature regulating module are respectively connected to the inlet pipe and the outlet pipe, and the temperature regulating module is configured to regulate the temperature of the heat exchange medium from the outlet pipe and send the regulated heat exchange medium to the inlet pipe.

[0007] Thirdly, this application provides a battery pack, which includes a housing, a battery cell array, and the aforementioned thermal management system; the housing has an installation cavity; the thermal management component, the end of the liquid inlet pipe near the thermal management component, and the end of the liquid outlet pipe near the thermal management component are all disposed in the installation cavity; there are multiple battery cell arrays, which are sequentially and alternately distributed with multiple thermal management components along a first direction, and the battery cell arrays are in contact with the adjacent thermal management components. Beneficial effects

[0008] This application reduces the space occupied by the heat management components of at least two heat pipe units by arranging them in an alternating manner and placing the pipe assemblies of at least two heat management units at the same end of the heat management components. This reduces the space occupied by the heat management system within the battery pack, thereby improving the energy density of the battery pack. Attached Figure Description

[0009] Figure 1 is a schematic diagram of the structure of the thermal management component provided in an embodiment of this application;

[0010] Figure 2 is an enlarged view of point A in Figure 1;

[0011] Figure 3 is a schematic diagram of the layout of the liquid inlet and liquid outlet of the thermal management component provided in an embodiment of this application;

[0012] Figure 4 is a schematic diagram of the arrangement of the pipe assemblies of the two thermal management units provided in an embodiment of this application;

[0013] Figure 5 is a schematic diagram of the structure of the thermal management component provided in an embodiment of this application;

[0014] Figure 6 is a schematic diagram of the structure of the pipe assembly provided in an embodiment of this application;

[0015] Figure 7 is a schematic diagram of the nozzle structure provided in an embodiment of this application;

[0016] Figure 8 is a schematic diagram of the structure of the thermal management system provided in an embodiment of this application;

[0017] Figure 9 is a schematic diagram of the battery structure provided in an embodiment of this application.

[0018] Figure label:

[0019] 1-Thermal management assembly; 11a-First thermal management unit; 11b-Second thermal management unit; 12a-Inlet pipe assembly; 12b-Outlet pipe assembly; 121-Telescopic pipe; 122-Nozzle; 123-Wedge block; 124-Sealing ring; 125-Conical surface;

[0020] 13-Thermal management component; 131-Flow channel; 132-Liquid inlet; 133-Liquid outlet; 134-Alignment structure; 135-Thermal management plate; 136-Current collector;

[0021] 2-Thermal management system; 21-Inlet pipe; 22-Outlet pipe; 23-Temperature control module;

[0022] 3-Battery pack; 31-Cell array; 311-Cell. Embodiments of the present invention

[0023] The following describes in detail, with reference to Figures 1 to 9, an embodiment of the present application that provides a thermal management component, a thermal management system, and a battery pack.

[0024] Please refer to Figures 1 and 2. Figure 1 is a structural schematic diagram of the thermal management component 1 provided in an embodiment of this application, and Figure 2 is an enlarged view of section A in Figure 1. An embodiment of this application provides a thermal management component 1. The thermal management component 1 includes multiple thermal management units. At least two thermal management units are a first thermal management unit 11a and a second thermal management unit 11b. The first thermal management unit 11a includes two pipe assemblies and multiple thermal management components 13. The two pipe assemblies are an inlet pipe assembly 12a and an outlet pipe assembly 12b. The multiple thermal management components 13 are arranged sequentially at intervals along a first direction. Each thermal management component 13 has a flow channel 131. The flow channel 131 is provided with an inlet end 132 and an outlet end 133. The inlet pipe assembly 12a connects the inlet ends 132 of the multiple thermal management components 13, and the outlet pipe assembly 12b connects the outlet ends 133 of the multiple thermal management components 13. The structure of the second thermal management unit 11b is the same as that of the first thermal management unit 11a. In this configuration, along the first direction, the thermal management components 13 of the first thermal management unit 11a and the second thermal management unit 11b are arranged alternately. The pipe assemblies of the first thermal management unit 11a and the second thermal management unit 11b are located at the same end of the thermal management components 13.

[0025] It is understood that the liquid inlet pipe assembly 12a and liquid outlet pipe assembly 12b of the first thermal management unit 11a and the liquid inlet pipe assembly 12a and liquid outlet pipe assembly 12b of the second thermal management unit 11b are located at the same end of the thermal management component 13. Specifically, the liquid inlet pipe assembly 12a and liquid outlet pipe assembly 12b of the first thermal management unit 11a and the liquid inlet pipe assembly 12a and liquid outlet pipe assembly 12b of the second thermal management unit 11b can be arranged along the arrangement direction of the liquid inlet end 132 and the liquid outlet end 133, so that these pipe assemblies are stacked.

[0026] In this embodiment, by arranging the thermal management components 13 of at least two thermal management units in an alternating manner, and ensuring that the tube assemblies of at least two thermal management units are located at the same end of the thermal management components 13, the total space occupied by the tube assemblies can be reduced, thereby reducing the space occupied by the thermal management components 1. This reduces the space ratio of the thermal management system within the battery, which is beneficial for improving the battery's energy density.

[0027] Furthermore, by staggering the thermal management components 13 of at least two thermal management units, the spacing between two adjacent interconnected thermal management components 13 can be increased, thereby increasing the arrangement space for the pipe assembly. This reduces the difficulty of assembling the pipe assembly and improves the ease of connecting the corresponding ports of the thermal management components 13 through the pipe assembly. In this way, the efficiency of assembling the pipe assembly with the corresponding thermal management component 13 can be improved, thereby increasing the assembly efficiency of the thermal management system 2.

[0028] Please refer to Figure 3, which is a schematic diagram of the layout of the liquid inlet 132 and liquid outlet 133 of the thermal management component 13 provided in an embodiment of this application. In one embodiment, the liquid inlet 132 and liquid outlet 133 of each thermal management component 13 are spaced apart along a second direction. The liquid inlet pipe assembly 12a and the liquid outlet pipe assembly 12b of the first thermal management unit 11a are spaced apart along the second direction. The liquid inlet pipe assembly 12a and the liquid outlet pipe assembly 12b of the second thermal management unit 11b are spaced apart along the second direction. The second direction is perpendicular to the arrangement plane of the thermal management components 13. Each thermal management component 13 is provided with a clearance structure 134, and the clearance structure 134 of each thermal management component 13 allows pipe assemblies 12 that are not connected to it to pass through.

[0029] Specifically, the pipe assembly of the first thermal management unit 11a passes through the clearance structure 134 of the second thermal management unit 11b, and the pipe assembly of the second thermal management unit 11b passes through the clearance structure 134 of the first thermal management unit 11a.

[0030] Optionally, the liquid inlet 132 of the first thermal management unit 11a, the liquid inlet 132 of the second thermal management unit 11b, the liquid outlet 133 of the first thermal management unit 11a, and the liquid outlet 133 of the second thermal management unit 11b are arranged sequentially at intervals along the second direction.

[0031] Correspondingly, the liquid inlet pipe assembly 12a of the first thermal management unit 11a, the liquid inlet pipe assembly 12a of the second thermal management unit 11b, the liquid outlet pipe assembly 12b of the first thermal management unit 11a, and the liquid outlet pipe assembly 12b of the second thermal management unit 11b are arranged sequentially at intervals along the second direction.

[0032] For example, the clearance structure 134 can be a hole or an opening. Optionally, the clearance structure 134 is an opening, as shown in FIG2.

[0033] In this embodiment, the above-mentioned arrangement allows the inlet pipe assembly 12a and outlet pipe assembly 12b of the two thermal management units to overlap in the second direction. This reduces the space occupied by the pipe assemblies of the two thermal management units, thereby improving the compactness of the layout structure of the pipe assembly of the thermal management component 1. This helps to reduce the space occupied by the thermal management system 2 and improve the space utilization of the battery pack 3.

[0034] Please refer to Figure 4, which is a schematic diagram of the arrangement of the tube assemblies 12 of the two thermal management units provided in an embodiment of this application. In one embodiment, the outer diameter of the tube assembly is X, and the distance between two adjacent tube assemblies along the first direction is Y, satisfying: 0.1X≤Y≤2X.

[0035] It is understood that Y includes, but is not limited to, 0.1X, 0.2X, 0.3X, 0.4X, 0.5X, 0.7X, 0.8X, 1X, 1.1X, 1.2X, 1.4X, 1.5X, 1.6X, 1.8X, 1.9X, and 2X.

[0036] In this embodiment, the above-mentioned limitations can ensure the installation feasibility and ease of assembly of the thermal management system, avoid the connection between the pipe assembly and the thermal management component 13 being affected by the excessive spacing, and control the arrangement height of the pipe assembly in the second direction to control the size of the thermal management system 2.

[0037] Referring to Figure 4, in one embodiment, the thermal management component 1 is configured to manage the temperature of the battery cell 311, the axis of which is parallel to a second direction. The height dimension of the battery cell 311 is H, and the outer diameter of the tube assembly is X, satisfying: 0.1H ≤ X ≤ 0.25H.

[0038] It is understandable that the height of the thermal management component 13 is compatible with the height of the battery cell 311. Correspondingly, the diameter of the tube assembly needs to be compatible with the height of the thermal management component 13 to ensure that the flow channel 131 can smoothly pass through the tube assembly for liquid inlet and outlet.

[0039] Based on this, in this embodiment, the above-mentioned limitations can ensure that each tube assembly has a suitable size to meet the liquid inlet and outlet requirements of the thermal management component 13, and can also reduce the design and manufacturing difficulty of the connection between the tube assembly and the thermal management component 13, thereby improving the assembly efficiency of the thermal management system 2.

[0040] Please refer to Figure 5, which is a schematic diagram of the structure of the thermal management component 13 provided in an embodiment of this application. In one embodiment, the flow channel 131 has a U-shaped structure.

[0041] It is understood that the thermal management component 13 includes a collector 136 and a thermal management plate 135 connected to the collector 136. A portion of the flow channel 131 is disposed on the thermal management plate 135, and another portion is disposed on the collector 136. Specifically, the inlet end 132 and the outlet end 133 of the flow channel 131 are disposed on the collector 136. The pipe assembly is connected to the collector 136.

[0042] In this embodiment, by setting the flow channel 131 as a U-shaped structure, the temperature uniformity of the thermal management component 13 for the thermal management of the same row of cells 311 can be improved, thereby improving the performance consistency of each cell 311 and thus improving the reliability of the battery 3.

[0043] Referring to Figures 1 and 2, in one embodiment, the liquid inlet assembly 12a includes a plurality of liquid inlet fittings 12c. The liquid outlet assembly 12b includes a plurality of liquid outlet fittings 12d. A liquid inlet fitting 12c and a liquid outlet fitting 12d are provided between each two adjacent thermal management components 13. The liquid inlet fitting 12c connects the liquid inlet ends 132 of two adjacent thermal management components 13. The liquid outlet fitting 12d connects the liquid outlet ends 133 of two adjacent thermal management components 13.

[0044] It is understandable that, compared to a structure that uses longer pipes to connect multiple inlet ends 132 and multiple outlet ends 133, in this embodiment, multiple inlet fittings 12c and multiple outlet fittings 12d are used to connect multiple inlet ends 132 and multiple outlet ends 133 respectively. This reduces the difficulty of connecting the pipe assembly and the thermal management component 13, thereby improving the ease of assembly between the pipe assembly and the thermal management component 13, and also helps to improve the sealing between the pipe assembly and the thermal management component 13, so as to effectively prevent the leakage of heat exchange medium.

[0045] Please refer to Figure 6, which is a schematic diagram of the pipe assembly 12 provided in an embodiment of this application. In one embodiment, the liquid inlet pipe 12c includes a telescopic pipe 121 and a nozzle 122. There are two nozzles 122. The two nozzles 122 are respectively connected to both ends of the telescopic pipe 121. The ends of the two nozzles 122 facing away from the telescopic pipe 121 are respectively connected to the liquid inlet end 132 of the flow channel 131 of the corresponding thermal management component 13. The structure of the liquid outlet pipe 12d is the same as that of the liquid inlet pipe 12c, and the two nozzles 122 of the liquid outlet pipe 12d are respectively connected to the liquid outlet end 133 of the corresponding thermal management component 13.

[0046] In this embodiment, the above-mentioned configuration allows the telescopic tube 121 to absorb assembly tolerances and material tolerances, thereby reducing assembly difficulty and improving assembly efficiency.

[0047] Furthermore, by absorbing assembly tolerances and material tolerances through the telescopic tube 121, the stress state of related components can be improved, thereby enhancing the connection reliability of related components and thus improving the reliability of the thermal management system 2.

[0048] Specifically, the telescopic tube 121 can be a corrugated tube, a rubber telescopic tube 121, or a plastic telescopic tube 121 made of plastic materials such as polyethylene and polypropylene.

[0049] Referring to Figure 6, in one embodiment, the telescopic tube 121 is a corrugated tube, and one end of the nozzle 122 is inserted into the telescopic tube 121 and expanded to connect with it. This gives the tube assembly good flexibility, bendability, and corrosion resistance, and allows it to withstand high pressure and temperature while minimizing resistance to the fluid, ensuring smooth fluid transport.

[0050] Specifically, the telescopic pipe 121 is a nylon corrugated pipe. This allows for the selection of a telescopic pipe 121 with fewer models as the main body of the pipe assembly, which facilitates the standardization of pipe assembly materials and makes maintenance easier.

[0051] Alternatively, the nylon corrugated pipe may be made of one of the following materials: A12 / PA12 (polydodecanoic acid), PP (polypropylene), or TIE / PA11 (nylon eleven).

[0052] Referring to Figure 6, in one embodiment, a wedge-shaped block 123 is provided on the outer peripheral surface of the nozzle 122. The wedge-shaped surface of the wedge-shaped block 123 faces the telescopic tube 121. The wedge-shaped block 123 extends in a ring shape along the circumference of the nozzle 122. The wedge-shaped block 123 is located inside the telescopic tube 121 and is interference-fitted with the inner wall of the telescopic tube 121. In this way, not only can the wedge-shaped block 123 guide the insertion between the telescopic tube 121 and the nozzle 122, improving assembly efficiency, but the wedge-shaped block 123 can also increase the interference between the telescopic tube 121 and the nozzle 122, thereby improving the sealing performance between the telescopic tube 121 and the nozzle 122.

[0053] Please refer to Figure 7, which is a schematic diagram of the structure of the nozzle 122 provided in an embodiment of this application. In one embodiment, each nozzle 122 is provided with two wedge blocks 123. The two wedge blocks 123 are spaced apart along the axial direction of the nozzle 122. In this way, the sealing performance between the telescopic tube 121 and the nozzle 122 can be improved.

[0054] It is understood that the inlet fitting 12c also includes a sealing ring 124. In the inlet fitting 12c, the sealing ring 124 is sleeved on the nozzle 122 and located between the nozzle 122 and the telescopic tube 121. The structure of the outlet fitting 12d is the same as that of the inlet fitting 12c.

[0055] Referring to Figure 7, in one embodiment, the outer circumferential surface of the end of the nozzle 122 inserted into the telescopic tube 121 is a conical surface 125. The small-diameter end of the conical surface 125 is connected to the end face of the nozzle 122 inserted into the telescopic tube 121. The large-diameter end of the conical surface 125 is connected to the small-diameter end of the wedge-shaped surface; wherein, the angle α between the axis of the conical surface 125 and the axis of the nozzle 122 is smaller than the angle β between the wedge-shaped surface and the axis of the nozzle 122. In this way, not only can the conical surface 125 guide the insertion of the nozzle 122 and the telescopic tube 121 to improve the smoothness of the insertion, but the conical surface 125 can also smoothly transition the expansion joint between the nozzle 122 and the telescopic tube 121 to improve the smoothness and ease of operation of the expansion joint.

[0056] Please refer to Figure 8, which is a schematic diagram of the structure of a thermal management system 2 provided in an embodiment of this application. An embodiment of this application provides a thermal management system 2. The thermal management system 2 includes an inlet pipe 21, an outlet pipe 22, a temperature regulating module 23, and thermal management components 1 provided in some embodiments of this application. The inlet pipe 21 is connected to the inlet ends 132 of at least two thermal management units. The outlet pipe 22 is connected to the outlet ends 133 of at least two thermal management units. The two ports of the temperature regulating module 23 are respectively connected to the inlet pipe 21 and the outlet pipe 22. The temperature regulating module 23 is configured to regulate the temperature of the heat exchange medium from the outlet pipe 22 and send the regulated heat exchange medium to the inlet pipe 21.

[0057] It is understood that the temperature regulation module 23 may include a compressor, condenser and evaporator connected by pipes, and is equipped with a valve body to achieve cooling or heating of the battery cell 311.

[0058] In this embodiment, by employing the thermal management component 1 provided in some embodiments of this application, the tube assemblies 12 of at least two thermal management units are located at the same end of the thermal management component 13, thereby reducing the total space occupied by the tube assemblies and thus reducing the space occupied by the thermal management component 1. This reduces the space ratio of the thermal management system 2 within the battery, which is beneficial for improving the battery's energy density.

[0059] Please refer to Figure 9, which is a schematic diagram of the structure of the battery 3 provided in an embodiment of this application. An embodiment of this application provides a battery pack 3. The battery pack 3 includes a housing, a cell array 31, and a thermal management system 2 provided in some embodiments of this application. The housing has a mounting cavity. The thermal management component 1, the end of the liquid inlet pipe 21 near the thermal management component 1, and the end of the liquid outlet pipe 22 near the thermal management component 1 are all disposed within the mounting cavity. There are multiple cell arrays 31. The multiple cell arrays 31 are sequentially and alternately distributed with multiple thermal management components 13 along a first direction. The cell arrays 31 are in contact with adjacent thermal management components 13.

[0060] Among them, the battery cell 311 is a cylindrical battery cell. The thermal management plate 135 of the thermal management component 13 is a serpentine plate and contacts the cylindrical surface of the battery cell 311, thereby increasing the contact area between the thermal management plate 135 and the battery cell 311, and thus improving the thermal management efficiency.

[0061] In this embodiment, by employing the thermal management system 2 provided in some embodiments of this application, the pipe assemblies 12 of at least two thermal management units are located at the same end of the thermal management component 13, thereby reducing the total space occupied by the pipe assemblies 12. This reduces the space ratio of the thermal management system within the battery pack 3, thus improving the energy density of the battery pack 3.

Claims

1. A thermal management assembly (1) comprising a plurality of thermal management units, wherein at least two of the thermal management units are a first thermal management unit (11a) and a second thermal management unit (11b); The first thermal management unit (11a) includes two pipe assemblies and a plurality of thermal management components (13); the two pipe assemblies are respectively a liquid inlet pipe assembly (12a) and a liquid outlet pipe assembly (12b); the plurality of thermal management components (13) are arranged sequentially at intervals along a first direction, and each thermal management component (13) has a flow channel (131), which is provided with a liquid inlet end (132) and a liquid outlet end (133); the liquid inlet pipe assembly (12a) connects the liquid inlet ends (132) of the plurality of thermal management components (13), and the liquid outlet pipe assembly (12b) connects the liquid outlet ends (133) of the plurality of thermal management components (13); The structure of the second thermal management unit (11b) is the same as that of the first thermal management unit (11a); in, Along the first direction, the thermal management component (13) of the first thermal management unit (11a) and the thermal management component (13) of the second thermal management unit (11b) are arranged alternately; the pipe assembly of the first thermal management unit (11a) and the pipe assembly of the second thermal management unit (11b) are located at the same end of the thermal management component (13).

2. The thermal management component (1) according to claim 1, wherein, The liquid inlet end (132) and the liquid outlet end (133) of each of the thermal management components (13) are spaced apart along a second direction; the liquid inlet pipe assembly (12a) and the liquid outlet pipe assembly (12b) of the first thermal management unit (11a) are spaced apart along the second direction; the liquid inlet pipe assembly (12a) and the liquid outlet pipe assembly (12b) of the second thermal management unit (11b) are spaced apart along the second direction; The second direction is perpendicular to the arrangement plane of the thermal management component (13); Each of the thermal management components (13) is provided with a clearance structure (134), the pipe assembly of the first thermal management unit (11a) passes through the clearance structure (134) of the second thermal management unit (11b), and the pipe assembly of the second thermal management unit (11b) passes through the clearance structure (134) of the first thermal management unit (11a).

3. The thermal management component (1) according to claim 2, wherein, The outer diameter of the pipe assembly is X, and the distance between two adjacent pipe assemblies along the first direction is Y, satisfying: 0.1X≤Y≤2X.

4. The thermal management assembly (1) according to claim 2, wherein The thermal management component (1) is configured to manage the temperature of the battery cell (311), the axis of the battery cell (311) being parallel to the second direction, the height dimension of the battery cell (311) being H, and the outer diameter of the tube assembly being X, satisfying: 0.1H≤X≤0.25H.

5. The thermal management component (1) according to any one of claims 1-4, wherein, The flow channel (131) has a U-shaped structure.

6. The thermal management assembly (1) according to any one of claims 1-4, wherein, The liquid inlet pipe assembly (12a) includes multiple liquid inlet pipes (21), and the liquid outlet pipe assembly (12b) includes multiple liquid outlet pipes (22). Each of the two adjacent thermal management components (13) is provided with a liquid inlet pipe (21) and a liquid outlet pipe (22). The liquid inlet pipe (21) connects the liquid inlet end (132) of the two adjacent thermal management components (13), and the liquid outlet pipe (22) connects the liquid outlet end (133) of the two adjacent thermal management components (13).

7. The thermal management assembly (1) according to claim 6, wherein The liquid inlet pipe (21) includes a telescopic pipe (121) and a nozzle (122). There are two nozzles (122), which are respectively connected to both ends of the telescopic pipe (121). The ends of the two nozzles (122) away from the telescopic pipe (121) are respectively connected to the liquid inlet end (132) of the corresponding thermal management component (13). The structure of the liquid outlet pipe (22) is the same as that of the liquid inlet pipe (21). The two nozzles (122) of the liquid outlet pipe (22) are respectively connected to the liquid outlet end (133) of the corresponding thermal management component (13).

8. The thermal management assembly (1) according to claim 7, wherein The telescopic tube (121) is a corrugated tube, and the nozzle (122) is inserted into the telescopic tube (121) and expanded to connect with the telescopic tube (121).

9. The thermal management assembly (1) according to claim 7, wherein A wedge-shaped block (123) is provided on the outer peripheral surface of the nozzle (122). The wedge-shaped surface of the wedge-shaped block (123) faces the telescopic tube (121), and the wedge-shaped block (123) extends in a ring along the circumference of the nozzle (122). The wedge-shaped block (123) is located inside the telescopic tube (121) and is interference-fitted with the inner wall of the telescopic tube (121).

10. The thermal management assembly (1) according to claim 9, wherein Each nozzle (122) is provided with two wedge blocks (123), and the two wedge blocks (123) are spaced apart along the axial direction of the nozzle (122).

11. The thermal management assembly (1) according to claim 9 or 10, wherein The outer circumferential surface of the end of the nozzle (122) inserted into the telescopic tube (121) is a conical surface (125). The small diameter end of the conical surface (125) is connected to the end face of the nozzle (122) inserted into the telescopic tube (121), and the large diameter end of the conical surface (125) is connected to the small diameter end of the wedge-shaped surface. The angle between the conical surface (125) and the axis of the nozzle (122) is smaller than the angle between the wedge-shaped surface and the axis of the nozzle (122).

12. A thermal management system (2), comprising: Thermal management component (1) as described in any one of claims 1-11; The liquid inlet pipe (21) is connected to the liquid inlet end (132) of the at least two thermal management units; The liquid outlet pipe (22) is connected to the liquid outlet end (133) of the at least two of the thermal management units; The temperature regulating module (23) is connected to the inlet pipe (21) and the outlet pipe (22) respectively. The temperature regulating module (23) is configured to regulate the temperature of the heat exchange medium from the outlet pipe (22) and send the regulated heat exchange medium to the inlet pipe (21).

13. A battery pack (3), comprising: The enclosure has a mounting cavity; The thermal management system (2) as described in claim 12, wherein the thermal management component (1), the end of the liquid inlet pipe (21) near the thermal management component (1), and the end of the liquid outlet pipe (22) near the thermal management component (1) are all disposed within the mounting cavity; And multiple battery cell rows (31) are arranged alternately with the multiple thermal management components (13) along the first direction, and the battery cell rows (31) are in contact with the adjacent thermal management components (13).

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