Liquid cooling system and battery pack

Abstract

The application provides a liquid cooling system and a battery pack, and belongs to the technical field of batteries. The liquid cooling system comprises a liquid cooling assembly and a connecting pipe. A plurality of liquid cooling assemblies are arranged in a first direction in a stacked manner, and the liquid cooling assemblies are arranged correspondingly to battery modules so that the liquid cooling assemblies cool the battery modules. At least one end of the liquid cooling assembly in a second direction is provided with a liquid cooling connector. The connecting pipe connects the liquid cooling connectors of the plurality of liquid cooling assemblies. The first direction and the second direction intersect with each other. The liquid cooling system provided in the application embodiment can simplify the overall structure of the liquid cooling system, reduce the space occupation of the liquid cooling system, and reduce the arrangement difficulty.

Description

Technical Field

[0001] This application relates to the field of battery technology, specifically to a liquid cooling system and a battery pack. Background Technology

[0002] Power batteries are crucial components of new energy vehicles. To ensure a sufficient power supply, power batteries typically consist of multiple battery modules. During charging and discharging, power batteries generate significant heat. If this heat cannot be dissipated effectively, it can affect safety and lifespan. Therefore, cooling systems are usually incorporated to improve the heat dissipation capacity of power batteries. Among these systems, liquid cooling offers superior heat dissipation and is widely used in power batteries.

[0003] In related technologies, multiple battery modules are usually set up in a single layer. In order to match the setting of multiple battery modules, each part of the liquid cooling system needs to be connected by complex pipelines, resulting in low space utilization within the power battery pack and greater difficulty in structural layout. Utility Model Content

[0004] The embodiments of this application provide a liquid cooling system and a battery pack, which can simplify the overall structure of the liquid cooling system, reduce the space occupation of the liquid cooling system, and reduce the difficulty of layout.

[0005] In a first aspect, embodiments of this application provide a liquid cooling system, comprising:

[0006] A liquid cooling assembly, wherein multiple liquid cooling assemblies are stacked along a first direction, and the liquid cooling assemblies are correspondingly arranged with the battery module so that the liquid cooling assemblies cool the battery module; at least one end of the liquid cooling assembly is provided with a liquid cooling connector in a second direction.

[0007] Connecting pipes, liquid cooling connectors that connect multiple liquid cooling components;

[0008] The first and second directions intersect each other.

[0009] In some embodiments, the liquid cooling connector includes a first liquid cooling connector and a second liquid cooling connector, wherein the first liquid cooling connector is used to enable liquid inlet of the corresponding liquid cooling component and the second liquid cooling connector is used to enable liquid outlet of the corresponding liquid cooling component.

[0010] The first liquid cooling connector and the second liquid cooling connector are located on the same side of the liquid cooling assembly.

[0011] In some embodiments, the connecting pipe includes a first connecting pipe and a second connecting pipe;

[0012] The first connecting pipe is connected to the first liquid cooling connector among the multiple liquid cooling components, and the second connecting pipe is connected to the second liquid cooling connector among the multiple liquid cooling components.

[0013] In some embodiments, the liquid cooling assembly includes a plurality of liquid cooling elements spaced apart along a third direction, with adjacent liquid cooling elements connected to each other by expansion joints to allow coolant to flow between the plurality of liquid cooling elements;

[0014] Among them, the third direction intersects with the first and second directions in pairs.

[0015] In some embodiments, the liquid cooling component is provided with a connecting structure, and the expansion joint is connected to the liquid cooling component through the connecting structure.

[0016] In some embodiments, the battery module includes a module housing and a battery cell assembly disposed within the module housing;

[0017] Liquid cooling components are housed within the module housing to cool the battery cell assembly;

[0018] The liquid cooling connector is located on the outside of the module housing, and the liquid cooling connector is sealed to the module housing.

[0019] In some embodiments, the battery pack includes a plurality of cylindrical battery cells, and the liquid cooling component includes a serpentine liquid cooling tube;

[0020] The serpentine liquid cooling tube is fitted with multiple cylindrical cells to cool them.

[0021] In some embodiments, the module housing is filled with a foam structure, and the liquid cooling components and battery cells are fixed to the module housing by the foam structure.

[0022] In some embodiments, the module housing is provided with a mounting groove and a mounting block, and the liquid cooling connector is provided with a sealing element;

[0023] The seal is placed in the mounting groove, and the mounting block presses the seal into the mounting groove to make the liquid cooling component and the module housing sealed together.

[0024] Secondly, embodiments of this application provide a battery pack, including a battery module and a liquid cooling system as described above;

[0025] Multiple battery modules are stacked along a first direction. The liquid cooling system includes a connecting pipe and multiple liquid cooling components stacked along the first direction. The liquid cooling components are arranged correspondingly to the battery modules so that the liquid cooling system cools the battery modules.

[0026] The liquid cooling assembly has a liquid cooling connector at at least one end in the second direction, wherein the first direction and the second direction intersect each other, and the connecting pipe connects the liquid cooling connectors of multiple liquid cooling assemblies.

[0027] In some embodiments, the battery pack further includes an outer casing, and the battery modules are disposed within the outer casing;

[0028] The liquid cooling system also includes a main pipeline, one end of which is connected to a liquid cooling connector or connecting pipe, and the other end of which extends to the outside of the outer casing.

[0029] The beneficial effects of the embodiments of this application are as follows:

[0030] In embodiments of this application, the liquid cooling system includes liquid cooling components and connecting pipes. Multiple liquid cooling components are stacked along a first direction, corresponding to battery modules, to cool the battery modules. Each liquid cooling component has a liquid cooling connector at least one end in a second direction. Connecting pipes connect the liquid cooling connectors of the multiple liquid cooling components. The first and second directions intersect each other. By stacking multiple liquid cooling components along the first direction in the liquid cooling system, the stacked battery modules can be cooled, improving space utilization within the battery pack. By providing liquid cooling connectors at least one end of each liquid cooling component in the second direction and connecting them to the liquid cooling connectors of the multiple liquid cooling components via connecting pipes, coolant can flow among the multiple liquid cooling components, improving the cooling effect. Furthermore, the connection of liquid cooling connectors and connecting pipes simplifies the piping layout in the liquid cooling system, ensuring sufficient coolant flow while reducing the difficulty of system layout. In other words, the liquid cooling system provided in this application simplifies the overall structure of the liquid cooling system, reduces its space occupation, and lowers the difficulty of layout. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the liquid cooling system provided in an embodiment of this application;

[0033] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0034] Figure 3 yes Figure 1 Enlarged view of point B in the middle;

[0035] Figure 4 This is a schematic diagram of the structure of the battery module provided in an embodiment of this application;

[0036] Figure 5 yes Figure 3 Enlarged view of point C in the middle;

[0037] Figure 6This is a schematic diagram of the structure of the liquid cooling assembly provided in an embodiment of this application;

[0038] Figure 7 This is a schematic diagram of the battery pack structure provided in an embodiment of this application.

[0039] Explanation of reference numerals in the attached figures:

[0040] 100. Liquid cooling system; 10. Liquid cooling component; 11. Liquid cooling connector; 111. First liquid cooling connector; 112. Second liquid cooling connector; 20. Connecting pipe; 21. First connecting pipe; 211. Seal; 22. Second connecting pipe; 30. Main pipeline; 31. Main liquid inlet pipe; 32. Main liquid outlet pipe; 12. Liquid cooling component; 121. Connection structure; 13. Expansion pipe; 200. Battery module; 41. Module housing; 42. Cell assembly; 411. Mounting slot; 412. Mounting block; 50. Outer casing. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application. In this application, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0042] Firstly, such as Figures 1-3As shown, an embodiment of this application provides a liquid cooling assembly 10 and a connecting pipe 20. Multiple liquid cooling assemblies 10 are stacked along a first direction, and each liquid cooling assembly 10 is correspondingly arranged with a battery module 200 to cool the battery module 200. At least one end of each liquid cooling assembly 10 in a second direction is provided with a liquid cooling connector 11. The connecting pipe 20 connects the liquid cooling connectors 11 of the multiple liquid cooling assemblies 10. The first and second directions intersect each other. By using multiple liquid cooling assemblies 10 stacked along the first direction in the liquid cooling system 100, the stacked battery module 200 can be cooled, improving the space utilization within the battery pack. By providing a liquid cooling connector 11 at at least one end of each liquid cooling assembly 10 in the second direction and connecting it to the liquid cooling connectors 11 of the multiple liquid cooling assemblies 10 via the connecting pipe 20, coolant can flow through the multiple liquid cooling assemblies 10, improving the cooling effect. Furthermore, the connection of the liquid cooling connector 11 and the connecting pipes 20 simplifies the piping layout in the liquid cooling system 100, ensuring sufficient flow of coolant within the liquid cooling system 100 while reducing the difficulty of its layout. In other words, the liquid cooling system 100 provided in this embodiment simplifies its overall structure, reduces its space occupation, and lowers the difficulty of its layout.

[0043] In some embodiments, such as Figures 1-3 As shown, the liquid cooling connector 11 includes a first liquid cooling connector 111 and a second liquid cooling connector 112. The first liquid cooling connector 111 is used to allow liquid to enter the corresponding liquid cooling component 10, and the second liquid cooling connector 112 is used to allow liquid to exit the corresponding liquid cooling component 10. The first liquid cooling connector 111 and the second liquid cooling connector 112 are located on the same side of the liquid cooling component 10.

[0044] The first liquid cooling connector 111 and the second liquid cooling connector 112 allow for liquid inlet and outlet of the liquid cooling assembly 10, respectively, enabling the coolant to flow within the liquid cooling assembly 10 and ensuring its effective heat dissipation for the battery module 200. Placing the first liquid cooling connector 111 and the second liquid cooling connector 112 on the same side of the liquid cooling assembly 10 simplifies the installation process of the connecting pipe 20 and the liquid cooling connector 11, improving installation efficiency. Furthermore, placing the first liquid cooling connector 111 and the second liquid cooling connector 112 on the same side saves space in the liquid cooling assembly 10, reducing space waste caused by placement on different sides and improving space utilization. In addition, placing the first liquid cooling connector 111 and the second liquid cooling connector 112 on the same side of the liquid cooling assembly 10 also reduces the number of connection points in the liquid cooling assembly 10, minimizing potential leakage points and improving the reliability and stability of the liquid cooling system 100.

[0045] In some embodiments, such as Figure 1As shown, the connecting pipe 20 includes a first connecting pipe 21 and a second connecting pipe 22. The first connecting pipe 21 is connected to a first liquid cooling connector 111 among the plurality of liquid cooling assemblies 10, and the second connecting pipe 22 is connected to a second liquid cooling connector 112 among the plurality of liquid cooling assemblies 10.

[0046] The first connecting pipe 21 is connected to the first liquid cooling connector 111 of the multiple liquid cooling components 10, and the second connecting pipe 22 is connected to the second liquid cooling connector 112 of the multiple liquid cooling components 10, enabling liquid inlet and outlet of the multiple liquid cooling components 10 in the liquid cooling system 100. Since the first liquid cooling connector 111 and the second liquid cooling connector 112 are located on the same side of the liquid cooling component 10, and the first connecting pipe 21 and the second connecting pipe 22 are also correspondingly located on the same side of the liquid cooling component 10, it is possible to save layout space and improve space utilization.

[0047] In some embodiments, such as Figures 1-3 As shown, the liquid cooling assembly 10 includes a plurality of liquid cooling elements 12 spaced apart along a third direction. Adjacent liquid cooling elements 12 are interconnected by expansion joints 13 to allow coolant to flow between the plurality of liquid cooling elements 12. The third direction intersects with the first and second directions in pairs.

[0048] The liquid cooling components 12, spaced apart along a third direction, ensure full contact between the battery cells in the battery module 200 and the liquid cooling components 12, increasing the heat dissipation and cooling area and guaranteeing the cooling effect of the battery module 200. Adjacent liquid cooling components 12 are interconnected via expansion joints 13, allowing multiple spaced liquid cooling components 12 to be connected into a single unit. This ensures a compact structure for the liquid cooling assembly 10, minimizing its space requirement and enabling the placement of more liquid cooling components 12 within a limited space, thereby improving heat dissipation and cooling capacity. The connection method of the expansion joints 13 ensures the connection strength and sealing between adjacent liquid cooling components 12, reducing the risk of leakage. Furthermore, different specifications of expansion joints 13 can be selected based on the number and spacing of the liquid cooling components 12 to adapt to different heat dissipation and cooling requirements.

[0049] In some embodiments, such as Figure 3 As shown, a connecting structure 121 is provided on the liquid cooling component 12, and the expansion joint 13 is connected to the liquid cooling component 12 through the connecting structure 121. The connection between the expansion joint 13 and the liquid cooling component 12 through the connecting structure 121 can improve the connection stability between the expansion joint 13 and the liquid cooling component 12 and ensure the connection strength between the liquid cooling components 12.

[0050] For example, such as Figure 3As shown, the liquid cooling component 12 is provided with a connecting joint, and the expansion joint 13 is sleeved on the connecting joint of the liquid cooling component 12 to connect adjacent liquid cooling components 12. The connecting joint of the expansion joint 13 is provided with rivets, and the expansion joint 13 is provided with rivet holes corresponding to the rivets. The expansion joint 13 and the connecting joint of the liquid cooling component 12 are fixed by the rivets and rivet holes to ensure the connection strength. The expansion joint 13 can be made of corrugated pipe, and the length of the corrugated pipe can be adjusted within a certain range. By using corrugated pipe, different spacing requirements can be met, improving the flexibility of the liquid cooling component 12 arrangement. A sealing structure can be provided inside the expansion joint 13 to ensure a sealed connection between the expansion joint 13 and the connecting joint, reducing the risk of coolant leakage.

[0051] In some embodiments, such as Figures 4-5 As shown, the battery module 200 includes a module housing 41 and a battery cell assembly 42 disposed within the module housing 41. A liquid cooling component 12 is disposed within the module housing 41 to cool the battery cell assembly 42. A liquid cooling connector 11 is disposed on the outside of the module housing 41 and is sealed to the module housing 41.

[0052] By placing the liquid cooling component 12 inside the module housing 41, it can fully contact the battery cell assembly 42, ensuring effective heat dissipation and cooling. Placing the liquid cooling connector 11 on the outside of the module housing 41 allows for easy connection of the liquid cooling connectors 11 of multiple liquid cooling components 10 via the connecting pipes 20, simplifying the layout. The sealed connection between the liquid cooling connector 11 and the module housing 41 ensures a tight seal, protecting the battery cell assembly 42 and liquid cooling component 12 within the module housing 41 and reducing external influences.

[0053] In some embodiments, such as Figure 4 As shown, the battery cell assembly 42 includes multiple cylindrical battery cells, and the liquid cooling component 12 includes a serpentine liquid cooling tube. The serpentine liquid cooling tube is fitted and disposed in close contact with the multiple cylindrical battery cells to cool them.

[0054] After multiple cylindrical cells are arranged, they form a serpentine heat dissipation surface. The serpentine liquid cooling pipe design allows it to closely conform to the surface of multiple cylindrical cells, increasing the contact area between the coolant in the serpentine liquid cooling pipe and the cylindrical cells, thereby effectively absorbing the heat generated by the cylindrical cells and improving heat dissipation efficiency. The serpentine liquid cooling pipe design can also be tightly integrated within the cell assembly 42, reducing space occupation. While ensuring heat dissipation and cooling effect, it helps to achieve miniaturization and weight reduction of the battery module 200, and improve the energy density of the battery module 200.

[0055] In some embodiments, the module housing 41 is filled with a foam structure (not shown in the figure), and the liquid cooling component 12 and the battery cell assembly 42 are fixed inside the module housing 41 by the foam structure. The expansion of the foam structure within the module housing 41 compresses the liquid cooling component 12 and the battery cell assembly 42, thus fixing them within the module housing 41 and ensuring their stability within the housing. By using a foam structure, the traditional method of fixing the liquid cooling component 12 and battery cell assembly 42 to the module housing 41 using bolts or snap-fits can be replaced, simplifying the fixing process. Furthermore, since in this embodiment, the liquid cooling component 12 is disposed inside the module housing 41, while the liquid cooling connector 11 is disposed outside the module housing 41, the influence of the foam structure expansion on the liquid cooling connector 11 can be avoided. That is, the expansion of the foam structure will not affect the liquid cooling connector 11 located on the outside of the module housing 41, and will not interfere with the arrangement of the connecting pipes 20 and the liquid cooling connector 11, thus simplifying the assembly process and improving assembly efficiency.

[0056] In some embodiments, such as Figures 5-6 As shown, the module housing 41 is provided with a mounting groove 411 and a mounting block 412, and the liquid cooling connector 11 is provided with a sealing element 211. The sealing element 211 is disposed in the mounting groove 411, and the mounting block 412 presses the sealing element 211 into the mounting groove 411 so that the liquid cooling assembly 10 is sealed to the module housing 41.

[0057] The mounting groove 411 and mounting block 412 provided on the module housing 41 simplify the process of assembling the liquid cooling connector 11 onto the module housing 41. By pressing the sealing element 211 provided on the liquid cooling connector 11 into the mounting groove 411 by the mounting block 412, a sealed connection between the liquid cooling connector 11 and the module housing 41 can be achieved.

[0058] Exemplarily, the process of installing the liquid cooling connector 11 onto the module housing 41 includes: removing the mounting block 412 from the mounting groove 411 on the module housing 41; placing the portion of the liquid cooling connector 11 with the sealing element 211 into the mounting groove 411; and then reassembling the mounting block 412 onto the module housing 41, so that the mounting block 412 presses the sealing element 211 into the mounting groove 411, thereby ensuring the stability of the connection between the connector and the module housing 41 and meeting the requirements of a sealed connection. The sealing element 211 on the liquid cooling connector 11 can be a sealing ring fitted onto the liquid cooling connector 11 or sealant.

[0059] Secondly, such as Figure 7As shown, an embodiment of this application provides a battery pack, including a battery module 200 and a liquid cooling system 100 as described above. Multiple battery modules 200 are stacked along a first direction. The liquid cooling system 100 includes a connecting pipe 20 and multiple liquid cooling components 10 stacked along the first direction. The liquid cooling components 10 are correspondingly disposed with respect to the battery modules 200, so that the liquid cooling system 100 cools the battery modules 200. At least one end of each liquid cooling component 10 is provided with a liquid cooling connector 11 in a second direction. The first and second directions intersect each other, and the connecting pipe 20 connects the liquid cooling connectors 11 of the multiple liquid cooling components 10.

[0060] Multiple battery modules 200 are stacked along a first direction, which can improve the space utilization of the battery pack while achieving a large capacity. A liquid cooling system 100 is configured corresponding to the battery modules 200, including multiple liquid cooling components 10 stacked along the first direction, thereby achieving cooling and heat dissipation for the multiple battery modules 200. The liquid cooling system 100 also includes connecting pipes 20, through which liquid cooling connectors 11 of the multiple liquid cooling components 10 can be connected, simplifying the piping layout in the liquid cooling system 100 and reducing the difficulty of arranging the liquid cooling system 100 while ensuring sufficient flow of coolant within it.

[0061] For example, the battery pack includes three battery modules 200 stacked along a first direction. Correspondingly, the liquid cooling system 100 also includes three liquid cooling components 10 stacked along the first direction.

[0062] In some embodiments, such as Figure 6 As shown, the battery pack also includes an outer casing 50, and the battery module 200 is disposed inside the outer casing 50. The liquid cooling system 100 also includes a main pipe 30, one end of which is connected to the liquid cooling connector 11 or the connecting pipe 20, and the other end of which extends to the outside of the outer casing 50.

[0063] The main pipe 30 enables the overall liquid inlet and outlet of the liquid cooling system 100. The flow of coolant in the liquid cooling system 100 improves the heat dissipation effect of the liquid cooling system 100 on the battery module 200, while also simplifying the arrangement of pipes in the battery pack.

[0064] For example, the main pipeline 30 includes a main liquid inlet pipe 31 and a main liquid outlet pipe 32. The main liquid inlet pipe 31 is connected to the first liquid cooling connector 111 of one of the liquid cooling components 10. The main liquid inlet pipe 31 can deliver coolant to the corresponding liquid cooling component 10, and can also distribute coolant to other liquid cooling components 10 through the first connecting pipe 21 connected to the first liquid cooling connector 111, thereby realizing the overall liquid inlet of the liquid cooling system 100. The main liquid outlet pipe 32 is connected to the second liquid cooling connector 112 of one of the liquid cooling components 10. The second liquid cooling connectors 112 of different liquid cooling components 10 are connected through the second connecting pipe 22. The coolant that has undergone heat exchange in the liquid cooling components 10 flows out through the corresponding second liquid cooling connector 112, and is collected through the second connecting pipe 22 to the second liquid cooling connector 112 connected to the main liquid outlet pipe 32, and then output to the outside through the main liquid outlet pipe 32.

[0065] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A liquid cooling system, characterized in that, include: A liquid cooling assembly, wherein a plurality of liquid cooling assemblies are stacked along a first direction, and the liquid cooling assemblies are correspondingly arranged with the battery module so that the liquid cooling assemblies cool the battery module; The liquid cooling assembly is provided with a liquid cooling connector at at least one end in the second direction. A connecting pipe, wherein the connecting pipe connects to the liquid cooling connectors of the plurality of liquid cooling components; The first direction and the second direction intersect each other.

2. The liquid cooling system according to claim 1, characterized in that, The liquid cooling connector includes a first liquid cooling connector and a second liquid cooling connector. The first liquid cooling connector is used to enable liquid inlet to the corresponding liquid cooling component, and the second liquid cooling connector is used to enable liquid outlet to the corresponding liquid cooling component. The first liquid cooling connector and the second liquid cooling connector are located on the same side of the liquid cooling assembly.

3. The liquid cooling system according to claim 2, characterized in that, The connecting pipe includes a first connecting pipe and a second connecting pipe; The first connecting pipe is connected to the first liquid cooling connector in the plurality of liquid cooling assemblies, and the second connecting pipe is connected to the second liquid cooling connector in the plurality of liquid cooling assemblies.

4. The liquid cooling system according to claim 1, characterized in that, The liquid cooling assembly includes a plurality of liquid cooling elements spaced apart along a third direction. Adjacent liquid cooling elements are connected to each other through expansion joints to allow coolant to flow between the plurality of liquid cooling elements. The third direction intersects with both the first direction and the second direction.

5. The liquid cooling system according to claim 4, characterized in that, The liquid cooling component is provided with a connecting structure, and the expansion joint is connected to the liquid cooling component through the connecting structure.

6. The liquid cooling system according to claim 4, characterized in that, The battery module includes a module housing and a battery cell assembly disposed within the module housing; The liquid cooling component is disposed inside the module housing to cool the battery cell assembly; The liquid cooling connector is located on the outside of the module housing, and the liquid cooling connector is sealed to the module housing.

7. The liquid cooling system according to claim 6, characterized in that, The battery cell assembly includes multiple cylindrical battery cells, and the liquid cooling component includes a serpentine liquid cooling tube. The serpentine liquid cooling tube is fitted to the plurality of cylindrical battery cells to cool the plurality of cylindrical battery cells.

8. The liquid cooling system according to claim 6, characterized in that, The module housing is filled with a foam structure, and the liquid cooling component and the battery cell assembly are fixed to the module housing through the foam structure.

9. The liquid cooling system according to any one of claims 6-8, characterized in that, The module housing is provided with an installation groove and an installation pressure block, and the liquid cooling connector is provided with a sealing element; The sealing element is disposed in the mounting groove, and the mounting block presses the sealing element into the mounting groove so that the liquid cooling component is sealed to the module housing.

10. A battery pack, characterized in that, Includes a battery module and a liquid cooling system as described in any one of claims 1-9; Multiple battery modules are stacked along a first direction. The liquid cooling system includes a connecting pipe and multiple liquid cooling components stacked along the first direction. The liquid cooling components are correspondingly arranged with the battery modules so that the liquid cooling system cools the battery modules. The liquid cooling assembly has a liquid cooling connector at at least one end in the second direction, wherein the first direction and the second direction intersect each other, and the connecting pipe connects the liquid cooling connectors of multiple liquid cooling assemblies.

11. The battery pack according to claim 10, characterized in that, The battery pack also includes an outer casing, and the battery module is disposed inside the outer casing; The liquid cooling system also includes a main pipeline, one end of which is connected to the liquid cooling connector or the connecting pipe, and the other end of which extends to the outside of the outer casing.

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