Pipe connection assembly, thermal management assembly, and battery pack

Abstract

The application provides a pipeline connecting assembly, a thermal management assembly and a battery pack, and relates to the technical field of batteries.The pipeline connecting assembly comprises two connecting sleeves and an adjusting sleeve assembly.The adjusting sleeve assembly is arranged between the two connecting sleeves, the end of the adjusting sleeve assembly is in sliding and sealing connection with the connecting sleeves, and the pipeline connecting assembly has an elongated first state and a contracted second state.The adjusting sleeve assembly is connected between the two connecting sleeves, and the end of the adjusting sleeve assembly is in sliding and sealing connection with the connecting sleeves, so that the pipeline connecting assembly can have the elongated first state and the contracted second state, the pipeline connecting assembly can absorb the size tolerance during installation, is suitable for various installation conditions, the pipeline connecting assembly can be contracted to complete the assembly when the space in the box is limited, and the pipeline connecting assembly can be elongated to complete the assembly when the space in the box is large, thereby facilitating the installation and disassembly of the pipeline connecting assembly.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a pipeline connection component, a thermal management component, and a battery pack. Background Technology

[0002] In power battery or energy storage battery systems, the thermal management system is a key component ensuring battery safety and lifespan. For cylindrical batteries, heat exchange plates are typically arranged in a serpentine, winding pattern along the cylindrical outer surface of the cell to maximize contact area for heat exchange. For example, existing thermal management assemblies often use a single serpentine heat exchange plate and two rows of cylindrical cells to form a small module. During assembly, each small module is simply placed inside the battery pack housing. Each module's serpentine heat exchange plate has a current collector at its end and extends a connector. The connectors between adjacent small modules are then connected via connecting pipes. However, when space is limited within the battery pack housing, it can be difficult to install the connecting pipes. Utility Model Content

[0003] The purpose of this application is to provide a pipe connection assembly, a thermal management assembly, and a battery pack to solve the technical problem that existing thermal management systems are prone to installation problems due to space constraints.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0005] In a first aspect, this application provides a pipeline connection assembly, including two connecting sleeves and an adjusting sleeve assembly. The adjusting sleeve assembly is disposed between the two connecting sleeves, and the end of the adjusting sleeve assembly is slidably and sealingly connected to the connecting sleeves, so that the pipeline connection assembly has a first extended state and a second contracted state.

[0006] In one or more embodiments of this application, the adjusting sleeve assembly includes at least two first adjusting sleeves and at least one second adjusting sleeve. Each second adjusting sleeve is connected between two adjacent first adjusting sleeves. The end of the first adjusting sleeve away from the second adjusting sleeve is sleeved onto the connecting sleeve and is slidably sealed to the connecting sleeve.

[0007] In one or more embodiments of this application, a first limiting structure is provided at one end of the connecting sleeve, and a second limiting structure is provided at the end of the first adjusting sleeve. The second limiting structure of the first adjusting sleeve is sleeved on the connecting sleeve and forms a limiting engagement with the first limiting structure of the connecting sleeve when the pipeline connection assembly is in the first state.

[0008] In one or more embodiments of this application, the first limiting structure is an annular structure extending from the wall of the self-connecting sleeve toward its central axis.

[0009] The second limiting structure is a convex ring structure extending from the wall of the first adjusting sleeve toward its central axis. A first sealing element is sleeved on the second limiting structure. The first sealing element covers the first wall of the second limiting structure parallel to its central axis and the second wall perpendicular to its central axis.

[0010] In one or more embodiments of this application, the end of the first adjusting sleeve away from the connecting sleeve is sleeved onto the second adjusting sleeve and is slidably and sealingly connected with the second adjusting sleeve; the two ends of the second adjusting sleeve are provided with a third limiting structure, and when the pipeline connection assembly is in the second state, the third limiting structure and the first limiting structure form a limiting fit.

[0011] In one or more embodiments of this application, a fourth limiting structure is provided at the end of the first adjusting sleeve away from the connecting sleeve. The fourth limiting structure of the first adjusting sleeve is sleeved on the second adjusting sleeve and forms a limiting engagement with the third limiting structure when the pipeline connection assembly is in the first state.

[0012] In one or more embodiments of this application, the third limiting structure is an annular structure extending from the wall of the second adjusting sleeve toward its central axis;

[0013] The fourth limiting structure is a convex ring structure extending from the wall of the first adjusting sleeve toward its central axis. A second sealing element is fitted on the fourth limiting structure. The second sealing element covers the third wall of the fourth limiting structure parallel to its central axis and the fourth wall perpendicular to its central axis.

[0014] Secondly, this application also provides a thermal management assembly, comprising: a plurality of heat exchange plates, a first manifold, and a pipeline connection assembly as described in any one of the first aspects; the plurality of heat exchange plates are spaced apart, and each heat exchange plate has a heat exchange channel that allows the flow of heat exchange medium; the first manifold is disposed at at least one end in the length direction of each heat exchange plate, and the first manifold is provided with a connection joint; the pipeline connection assembly is used to connect the first manifolds of two adjacent heat exchange plates, wherein the end of the connecting sleeve of the pipeline connection assembly away from the adjusting sleeve assembly is sealed to the connection joint.

[0015] In one or more embodiments of this application, the first collector is provided with a first collector cavity and a second collector cavity, the first collector cavity and the second collector cavity are spaced apart, and both the first collector cavity and the second collector cavity are connected to the heat exchange channel. A connecting joint is connected to at least one side of the first collector cavity and to both the first collector cavity and the second collector cavity.

[0016] Thirdly, this application also provides a battery pack, comprising: a housing, a plurality of battery modules, and a thermal management component as described in any one of the second aspects. The housing has an accommodating space; the plurality of battery modules are placed within the accommodating space, each battery module comprising two rows of battery cells arranged side by side along its width direction, each row of battery cells comprising a plurality of cylindrical cells arranged sequentially along its length direction; the thermal management component is placed within the accommodating space, and the heat exchange plate of the thermal management component is disposed between two adjacent rows of battery cells of each battery module, the heat exchange surface of the heat exchange plate being an arc shape consistent with the outer peripheral surface of the cylindrical cells.

[0017] Based on the above technical solutions, the pipeline connection assembly, thermal management assembly, and battery pack provided in this application embodiment have at least the following beneficial technical effects:

[0018] The pipe connection assembly of this application is connected between two connecting sleeves through an adjusting sleeve assembly, and the end of the adjusting sleeve assembly can be slidably and sealingly connected to the connecting sleeve, so that the pipe connection assembly can have a first extended state and a second contracted state. This allows the pipe connection assembly to absorb dimensional tolerances during installation and is suitable for various installation conditions. When there is limited space inside the box, the pipe connection assembly can be contracted to complete the assembly. When there is more space inside the box, the pipe connection assembly can be extended for assembly, which facilitates the installation and disassembly of the pipe connection assembly. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the 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.

[0020] Figure 1 This is a three-dimensional structural diagram of the pipeline connection assembly provided in the embodiment of this application in its first state.

[0021] Figure 2 This is a cross-sectional schematic diagram of the pipeline connection assembly provided in the embodiment of this application in the first state.

[0022] Figure 3 This is a three-dimensional structural diagram of the pipeline connection assembly provided in the embodiment of this application in the second state.

[0023] Figure 4 This is a cross-sectional schematic diagram of the pipeline connection assembly provided in the embodiment of this application in the second state.

[0024] Figure 5 This is a three-dimensional structural diagram of the thermal management component in the battery pack provided in the embodiments of this application.

[0025] Figure 6 This is a schematic diagram of the connection method between the first manifold and the pipeline connection assembly in the thermal management component provided in the embodiments of this application.

[0026] Figure 7 This is an exploded view of the first manifold and the pipeline connection assembly in the thermal management assembly provided in the embodiments of this application.

[0027] Figure 8 This is a top view of the battery pack provided in an embodiment of this application.

[0028] In the diagram: 1-Box; 2-Battery module; 3-Thermal management component; 20-Battery cell; 21-Cylindrical cell; 31-Heat exchange plate; 32-First manifold; 33-Pipe connection assembly; 34-Main water inlet pipe; 35-Main water outlet pipe; 36-Second manifold; 320-First manifold cavity; 321-Second manifold cavity; 322-Connecting joint; 323-Third sealing element; 331-Connecting sleeve; 332-Adjusting sleeve assembly; 333-First sealing element; 334-Second sealing element; 3311-First limiting structure; 3320-Second limiting structure; 3321-First adjusting sleeve; 3322-Second adjusting sleeve; 3323-Third limiting structure; 3324-Fourth limiting structure; 33201-First wall; 33202-Second wall; 33241-Third wall; 33242-Fourth wall. Detailed Implementation

[0029] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0030] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0031] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0033] In related technologies, for cylindrical batteries, heat exchange plates are typically arranged in a serpentine, winding manner along the cylindrical outer surface of the cell to maximize the contact area for heat exchange. Existing thermal management assemblies usually consist of a single serpentine heat exchange plate and two rows of cylindrical cells forming a small module. Each small module's serpentine heat exchange plate has a current collector at its end and extends a connector. During assembly, one small module needs to be placed inside the battery pack housing, while another small module needs to be moved a certain distance away from the connected module to avoid the connector, allowing the connectors on adjacent small modules to be connected via connecting pipes. However, when space is limited inside the battery pack housing, the connecting pipes may not be able to be installed.

[0034] Based on the above considerations, and to address the technical problem that existing thermal management systems are prone to installation difficulties due to space constraints, this application provides a pipe connection assembly, a thermal management assembly, and a battery pack. The pipe connection assembly of this application is connected between two connecting sleeves via an adjusting sleeve assembly, and the end of the adjusting sleeve assembly can be slidably and sealingly connected to the connecting sleeves. This allows the pipe connection assembly to have an extended first state and a retracted second state, enabling it to accommodate dimensional tolerances during installation and making it suitable for various installation conditions. When space within the enclosure is limited, the pipe connection assembly can be retracted for assembly; when space within the enclosure is ample, the pipe connection assembly can be extended for assembly, facilitating the installation and disassembly of the pipe connection assembly.

[0035] The technical solution of this application will now be described in detail with reference to the accompanying drawings.

[0036] Please refer to the following: Figures 1 to 4 This application provides a pipeline connection assembly 33, including two connecting sleeves 331 and an adjusting sleeve assembly 332. The adjusting sleeve assembly 332 is disposed between the two connecting sleeves 331. The end of the adjusting sleeve assembly 332 is slidably and sealingly connected to the connecting sleeves 331, and the pipeline connection assembly 33 has an extended first state and a contracted second state.

[0037] The connecting sleeve 331 and the regulating sleeve assembly 332 both have internal cavities to allow the heat exchange medium to flow between the cavities of the connecting sleeve 331 and the regulating sleeve assembly 332. Both ends of the regulating sleeve assembly 332 are slidably and sealingly connected to the ends of one of the connecting sleeves 331. This means that the ends of the regulating sleeve assembly 332 can slide relative to the connecting sleeve 331, and the connection between the regulating sleeve assembly 332 and the connecting sleeve 331 remains sealed before, during, and after sliding to prevent leakage of the heat exchange medium from the connection. The pipe connection assembly 33 has an extended first state and a contracted second state. This means that the pipe connection assembly 33 can extend or contract based on the sliding of the ends of the regulating sleeve assembly 332 relative to the connecting sleeve 331. When extended, the pipe connection assembly 33 is in the first state; when contracted, it is in the second state.

[0038] In the technical solution of this application embodiment, the pipe connection assembly 33 is connected between two connecting sleeves 331 through an adjusting sleeve assembly 332, and the end of the adjusting sleeve assembly 332 can be slidably and sealingly connected to the connecting sleeve 331, so that the pipe connection assembly 33 can have an extended first state and a contracted second state, allowing the pipe connection assembly 33 to absorb dimensional tolerances during installation, making it suitable for various installation conditions and improving installation efficiency and flexibility. When the space inside the box is limited, the pipe connection assembly 33 can be contracted to complete the assembly; when the space inside the box is large, the pipe connection assembly 33 can be extended for assembly, facilitating the installation and disassembly of the pipe connection assembly 33.

[0039] Please refer to Figures 1 to 4 In some embodiments, the adjusting sleeve assembly 332 includes at least two first adjusting sleeves 3321 and at least one second adjusting sleeve 3322, each second adjusting sleeve 3322 being connected between two adjacent first adjusting sleeves 3321, and one end of the first adjusting sleeve 3321 away from the second adjusting sleeve 3322 being sleeved on the connecting sleeve 331 and slidably sealed to the connecting sleeve 331.

[0040] It is understood that at least two first adjusting sleeves 3321 and at least one second adjusting sleeve 3322 together constitute the adjusting sleeve assembly 332. In some embodiments, the connecting sleeve 331 may be made of plastic or metal, and the first adjusting sleeve 3321 and the second adjusting sleeve 3322 may also be made of plastic or metal. The number of first adjusting sleeves 3321 and the number of second adjusting sleeves 3322 can be set as needed, such that the number of second adjusting sleeves 3322 is one less than the number of first adjusting sleeves 3321. For example, the number of first adjusting sleeves 3321 is 2 and the number of second adjusting sleeves 3322 is 1; the number of first adjusting sleeves 3321 is 3 and the number of second adjusting sleeves 3322 is 2; or the number of first adjusting sleeves 3321 is 4 and the number of second adjusting sleeves 3322 is 3, etc. The end of the first adjusting sleeve 3321 furthest from the second adjusting sleeve 3322 is sleeved onto the connecting sleeve 331. This can be either the outer side of the first adjusting sleeve 3321 or the inner side of the connecting sleeve 331. This modular design enhances the versatility and interchangeability of the pipeline connection assembly 33, thereby reducing costs.

[0041] With the above configuration, the end of the first adjusting sleeve 3321 is sleeved on the connecting sleeve 331 and slidably sealed with the connecting sleeve 331, thereby enabling the pipeline connection assembly 33 to have a first extended state and a second contracted state. For example, when the first adjusting sleeve 3321 overlaps the connecting sleeve 331 significantly, that is, when the first adjusting sleeve 3321 extends a long distance into the connecting sleeve 331, the pipeline connection assembly 33 can be contracted. When the first adjusting sleeve 3321 is pulled outward, the pipeline connection assembly 33 can be extended.

[0042] In some embodiments, such as Figure 1 and Figure 2 As shown, the first adjusting sleeve 3321 is fitted inside the connecting sleeve 331. Therefore, the inner diameter of the cavity inside the connecting sleeve 331 is larger than the inner diameter of the cavity inside the first adjusting sleeve 3321.

[0043] like Figure 2 and Figure 4As shown, in some embodiments, one end of the connecting sleeve 331 is provided with a first limiting structure 3311, which is an annular structure extending from the wall of the connecting sleeve 331 toward its central axis. The middle of the annular first limiting structure 3311 has a through hole allowing the first adjusting sleeve 3321 to pass through. The end of the first adjusting sleeve 3321 is provided with a second limiting structure 3320, which is a convex ring structure extending from the wall of the first adjusting sleeve 3321 away from its central axis. The second limiting structure 3320 of the first adjusting sleeve 3321 is sleeved onto the connecting sleeve 331, and forms a limiting fit with the first limiting structure 3311 of the connecting sleeve 331 when the pipeline connection assembly 33 is in the first state. This prevents the first adjusting sleeve 3321 from detaching from the connecting sleeve 331 during sliding or use.

[0044] To achieve a seal between the first adjusting sleeve 3321 and the connecting sleeve 331, such as Figure 2 As shown, in some embodiments, a first sealing element 333 is fitted onto the second limiting structure 3320. The first sealing element 333 can be a sealing ring. The first sealing element 333 covers the first wall 33201 of the second limiting structure 3320 parallel to its central axis and the second wall 33202 perpendicular to its central axis. This achieves a seal between the first limiting structure 3311 and the inner wall of the connecting sleeve 331, as well as a seal between the contact surfaces of the first limiting structure 3311 and the second limiting structure 3320 when the pipeline connection assembly 33 is in the first state, preventing leakage of the heat exchange medium from the connection point. The first sealing element 333 covers the second limiting structure 3320, which, when the first sealing element 333 is subjected to the pressure of the internal heat exchange medium, helps to enhance the contact tightness between the first sealing element 333 and the second limiting structure 3320, improving the sealing effect. Additionally, it also prevents dust or other contaminants from the external environment from entering the pipeline, protecting the purity of the heat exchange medium and the long-term reliable operation of the heat exchange system.

[0045] In some embodiments, such as Figure 2 or Figure 4As shown, the end of the first adjusting sleeve 3321 away from the connecting sleeve 331 is sleeved onto the second adjusting sleeve 3322 and slidably sealed with the second adjusting sleeve 3322. It can be understood that the first adjusting sleeve 3321 can be sleeved either on the outside or inside the second adjusting sleeve 3322. In the embodiment shown in this application, the first adjusting sleeve 3321 is sleeved inside the second adjusting sleeve 3322. Therefore, the relative sliding between the first adjusting sleeve 3321 and the second adjusting sleeve 3322 can also be used to achieve the extension or contraction of the pipeline connection assembly 33. For example, when the first adjusting sleeve 3321 and the second adjusting sleeve 3322 overlap significantly, that is, when the first adjusting sleeve 3321 extends a considerable distance into the second adjusting sleeve 3322, the pipeline connection assembly 33 can be contracted; when the first adjusting sleeve 3321 is pulled outwards, the pipeline connection assembly 33 can be extended.

[0046] In some embodiments, such as Figure 2 and Figure 4 As shown, the first adjusting sleeve 3321 is fitted inside the second adjusting sleeve 3322. Therefore, the inner diameter of the cavity inside the second adjusting sleeve 3322 is larger than the inner diameter of the cavity inside the first adjusting sleeve 3321.

[0047] In some embodiments, such as Figure 2 and Figure 4 As shown, the second adjusting sleeve 3322 has third limiting structures 3323 at both ends. The third limiting structure 3323 is an annular structure extending from the pipe wall of the second adjusting sleeve 3322 toward its central axis. When the pipe connection assembly 33 is in the second state, the third limiting structure 3323 and the first limiting structure 3311 form a limiting fit. For example, as... Figure 3 and Figure 4 As shown, the third limiting structure 3323 abuts against the first limiting structure 3311, thereby enabling the second adjusting sleeve 3322 to limit and stop the connecting sleeve 331, preventing excessive contraction from causing misalignment.

[0048] In some embodiments, the first adjusting sleeve 3321 has a fourth limiting structure 3324 at the end away from the connecting sleeve 331. The fourth limiting structure 3324 is a convex ring structure extending from the wall of the first adjusting sleeve 3321 in a direction away from its central axis. The fourth limiting structure 3324 of the first adjusting sleeve 3321 is sleeved on the second adjusting sleeve 3322 and forms a limiting engagement with the third limiting structure 3323 when the pipeline connection assembly 33 is in the first state. In this way, it can prevent the first adjusting sleeve 3321 and the second adjusting sleeve 3322 from falling off during the sliding process and use.

[0049] In some embodiments, to achieve a seal between the first adjusting sleeve 3321 and the second adjusting sleeve 3322, a second sealing element 334 is fitted onto the fourth limiting structure 3324. The second sealing element 334 can be a sealing ring. The second sealing element 334 covers the third wall 33241 of the fourth limiting structure 3324 parallel to its central axis and the fourth wall 33242 perpendicular to its central axis. This achieves a seal between the fourth limiting structure 3324 and the inner wall of the second adjusting sleeve 3322, as well as a seal between the contact surfaces of the fourth limiting structure 3324 and the third limiting structure 3323 when the pipeline connection assembly is in the first state, preventing leakage of the heat exchange medium from the connection point. The second sealing element 334 covers the fourth limiting structure 3324, and when the second sealing element 334 is subjected to internal heat exchange medium pressure, it helps to enhance the tightness of the connection between the second sealing element 334 and the fourth limiting structure 3324, improving the sealing effect. In addition, it can prevent dust or other pollutants from the external environment from entering the pipes, protecting the purity of the heat exchange medium and the long-term reliable operation of the heat exchange system.

[0050] On the other hand, such as Figures 5 to 7 As shown, this application provides a thermal management component 3, including: a plurality of heat exchange plates 31, a first manifold 32, and the aforementioned pipeline connection component 33. The plurality of heat exchange plates 31 are spaced apart, and each heat exchange plate 31 has a heat exchange channel that allows the flow of heat exchange medium. The first manifold 32 is disposed at at least one end of each heat exchange plate 31 along its length. In some embodiments, the first manifold 32 may be disposed at one end of each heat exchange plate 31 along its length, and a second manifold 36 may be disposed at the other end of each heat exchange plate 31 along its length. The second manifold 36 has a communicating cavity and can cause the heat exchange medium in the heat exchange plate 31 to change direction. In other embodiments, the first manifold 32 may also be disposed at both ends of each heat exchange plate 31 along its length.

[0051] like Figure 6 and Figure 7 As shown, the first collector 32 has a first collector cavity 320 and a second collector cavity 321 inside. The first collector cavity 320 and the second collector cavity 321 are spaced apart, and both the first collector cavity 320 and the second collector cavity 321 are connected to the heat exchange channel. The heat exchange medium can enter part of the heat exchange channel of the heat exchange plate 31 from the first collector cavity 320, and then be mixed in the second collector 36 and return to the second collector cavity 321 of the first collector 32 from the remaining heat exchange channel to form a U-shaped heat exchange loop.

[0052] like Figure 7As shown, a connecting joint 322 is connected to at least one side of the first collector 32, corresponding to both the first collector cavity 320 and the second collector cavity 321. The connecting joint 322 can be welded to the first collector 32 and communicates with the first collector cavity 320 and the second collector cavity 321. The first collector 32 is provided with the connecting joint 322, and the pipeline connection assembly 33 is used to connect the first collector 32 of two adjacent heat exchange plates 31. The end of the connecting sleeve 331 of the pipeline connection assembly 33 away from the adjusting sleeve assembly 332 is sealed to the connecting joint 322. In some embodiments, the outer side of the connecting joint 322 is provided with an external thread structure, and the end cavity of the connecting sleeve 331 connected to the connecting joint 322 is provided with an internal thread structure. The connecting sleeve 331 and the connecting joint 322 are threadedly connected. A third sealing element 323 is fitted on the connecting joint 322. The third sealing element 323 can be a sealing ring, so that a seal can be achieved between the connecting sleeve 331 and the connecting joint 322 to prevent leakage of the heat exchange medium.

[0053] It should be noted that in thermal management component 3, such as Figure 5 As shown, in the two first collectors 32 located on the side, one of the first collectors 32 has a connecting joint 322 connected to both the first collector cavity 320 and the second collector cavity 321 on one side, and a main water inlet joint is provided on the other side of the first collector 32 corresponding to the first collector cavity 320 and connected to the main water inlet pipe 34. In the other first collector 32 on the side, a main water outlet joint is provided on the side opposite to the main water inlet joint corresponding to the second collector cavity 321 and connected to the main water outlet pipe 35. Thus, the heat exchange medium can enter the first collector 32 located on the side from the main water inlet pipe 34, and enter the other first collector 32 in parallel from the other side of the first collector 32 through the two pipe connection assemblies 33 corresponding to the first collector cavity 320 and the second collector cavity 321, and finally flow out from the main water outlet pipe 35 of the first collector 32 located on the other side.

[0054] On the other hand, such as Figure 8As shown, this application also provides a battery pack, including: a housing 1, multiple battery modules 2, and the aforementioned thermal management component 3. The housing 1 has a receiving space; the multiple battery modules 2 are placed in the receiving space, each battery module 2 including two rows of battery cells 20 arranged side by side along its width direction, and each row of battery cells 20 including multiple cylindrical cells 21 arranged sequentially along its length direction; the thermal management component 3 is placed in the receiving space, and the heat exchange plate 31 of the thermal management component 3 is disposed between two adjacent rows of battery cells 20 in each battery module 2, the heat exchange surface of the heat exchange plate 31 being arc-shaped consistent with the outer peripheral surface of the cylindrical cells 21. This achieves heat exchange for the battery cells 20 in each battery module 2. Since the first current collectors 32 in two adjacent thermal management components are connected by a pipeline connection component 33, even in cases where the receiving space in the housing is limited, the battery modules 2 do not need to be moved; only the pipeline connection component 33 needs to be adjusted to adapt to the distance between the connection joints 322 of the two first current collectors 32, making installation convenient.

[0055] The battery pack of this application is applicable to electrical devices that use batteries as a power source or various energy storage systems that use batteries as energy storage elements. Electrical devices can be vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, power tools, energy storage devices, amusement equipment, elevators and lifting equipment, etc. Electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, or electric airplane toys, etc.; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc.; energy storage devices can be energy storage walls, base station energy storage, container energy storage, etc.; amusement equipment can be carousels, drop towers, etc.

[0056] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A pipe connection assembly, characterized in that, include: Two connecting sleeves (331); An adjusting sleeve assembly (332) is disposed between the two connecting sleeves (331), the end of the adjusting sleeve assembly (332) being slidably and sealingly connected to the connecting sleeves (331), and the pipeline connection assembly having a first extended state and a second contracted state.

2. The pipeline connection assembly according to claim 1, characterized in that, The adjusting sleeve assembly (332) includes: At least two first regulating sleeves (3321); At least one second adjusting sleeve (3322), each second adjusting sleeve (3322) is connected between two adjacent first adjusting sleeves (3321), and the end of the first adjusting sleeve (3321) away from the second adjusting sleeve (3322) is sleeved on the connecting sleeve (331) and slidably sealed to the connecting sleeve (331).

3. The pipeline connection assembly according to claim 2, characterized in that, One end of the connecting sleeve (331) is provided with a first limiting structure (3311), and the end of the first adjusting sleeve (3321) is provided with a second limiting structure (3320). The second limiting structure (3320) of the first adjusting sleeve (3321) is sleeved on the connecting sleeve (331), and forms a limiting fit with the first limiting structure (3311) of the connecting sleeve (331) when the pipeline connection assembly is in the first state.

4. The pipeline connection assembly according to claim 3, characterized in that, The first limiting structure (3311) is an annular structure extending from the wall of the connecting sleeve (331) toward its central axis; The second limiting structure (3320) is a convex ring structure extending from the tube wall of the first adjusting sleeve (3321) toward its central axis. A first sealing member (333) is sleeved on the second limiting structure (3320). The first sealing member (333) covers the first wall (33201) of the second limiting structure (3320) parallel to its central axis and the second wall (33202) perpendicular to its central axis.

5. The pipe connection assembly according to claim 3 or 4, characterized in that, The first adjusting sleeve (3321) is sleeved at one end away from the connecting sleeve (331) onto the second adjusting sleeve (3322) and is slidably sealed to the second adjusting sleeve (3322); the two ends of the second adjusting sleeve (3322) are provided with a third limiting structure (3323), and when the pipeline connection assembly is in the second state, the third limiting structure (3323) and the first limiting structure (3311) form a limiting fit.

6. The pipeline connection assembly according to claim 5, characterized in that, The first adjusting sleeve (3321) is provided with a fourth limiting structure (3324) at one end away from the connecting sleeve (331). The fourth limiting structure (3324) of the first adjusting sleeve (3321) is sleeved on the second adjusting sleeve (3322) and forms a limiting engagement with the third limiting structure (3323) when the pipeline connection assembly is in the first state.

7. The pipe connection assembly according to claim 6, characterized in that, The third limiting structure (3323) is an annular structure extending from the wall of the second adjusting sleeve (3322) toward its central axis; The fourth limiting structure (3324) is a convex ring structure extending from the tube wall of the first adjusting sleeve (3321) in the direction away from its central axis. A second sealing member (334) is sleeved on the fourth limiting structure (3324). The second sealing member (334) covers the third wall (33241) of the fourth limiting structure (3324) parallel to its central axis and the fourth wall (33242) perpendicular to its central axis.

8. A thermal management component, characterized in that, include: Multiple heat exchange plates (31) are arranged at intervals, and each heat exchange plate (31) is provided with a heat exchange channel that allows the heat exchange medium to flow. A first collector (32) is provided at least one end of each heat exchange plate (31) along its length, and a connecting joint (322) is provided on the first collector (32); The pipeline connection assembly (33) according to any one of claims 1 to 7 is used to connect the first manifold (32) of two adjacent heat exchange plates (31), wherein the end of the connecting sleeve (331) of the pipeline connection assembly (33) away from the adjusting sleeve assembly (332) is sealed to the connecting joint (322).

9. The thermal management component according to claim 8, characterized in that, The first collector (32) is provided with a first collector cavity (320) and a second collector cavity (321) inside. The first collector cavity (320) and the second collector cavity (321) are spaced apart, and both the first collector cavity (320) and the second collector cavity (321) are connected to the heat exchange channel. The connecting joint (322) is connected to at least one side of the first collector (32) and to the first collector cavity (320) and the second collector cavity (321).

10. A battery pack, characterized in that, include: The box (1) has a storage space; Multiple battery modules (2) are placed in the accommodating space. Each battery module (2) includes two rows of battery units (20) arranged side by side along its width direction. Each row of battery units (20) includes multiple cylindrical cells (21) arranged sequentially along its length direction. The thermal management component (3) of claim 8 or 9 is placed in the accommodating space, and the heat exchange plate (31) of the thermal management component (3) is disposed between two adjacent rows of battery cells (20) of each battery module (2), and the heat exchange surface of the heat exchange plate (31) is arc-shaped consistent with the outer peripheral surface of the cylindrical cell (21).

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