Overcurrent assembly and battery pack

Abstract

The application relates to the technical field of power batteries, and provides an overcurrent assembly and a battery pack. The overcurrent assembly comprises a main body, a plurality of connecting pieces arranged at opposite ends of the main body and corresponding to a plurality of battery modules one by one, and a first protective layer. The plurality of connecting pieces are used for welding the pole columns of the battery cells located at the same end in the adjacent plurality of battery modules, so that the plurality of battery modules are connected in series or parallel. The first protective layer covers the main body and at least part of each connecting piece. The overcurrent assembly provided by the application improves the connecting strength between the overcurrent assembly and the pole columns by arranging the main body and the connecting pieces and connecting the connecting pieces and the pole columns by welding, simultaneously, the main body and each connecting piece form an integrated structure, the structural strength of the overcurrent assembly itself is guaranteed, the first protective layer has a protective effect on the main body and the connecting pieces, and therefore the connecting stability between the battery modules is improved.

Description

Technical Field

[0001] This application relates to the field of power battery technology, and in particular to an overcurrent component and battery pack. Background Technology

[0002] When connecting multiple battery modules, it is usually necessary to install outward-extending busbars on the cell terminals at the ends of each battery module, and then connect the various busbars together through bridging copper busbars to realize the series or parallel connection of multiple battery modules.

[0003] However, the bridging copper busbars and busbars are mostly connected by bolts. When the battery module is in a vibrating environment, the bolts are prone to loosening, which in turn affects the connection stability between the battery modules. Utility Model Content

[0004] In view of this, this application aims to propose an overcurrent component to improve connection stability.

[0005] To achieve the above objectives, the technical solution of this application is implemented as follows: A current-carrying component includes a main body, multiple connecting pieces disposed at opposite ends of the main body and corresponding to multiple battery modules, and a first protective layer. Multiple connecting pieces extend outward from the same side of the main body along a preset direction, and the multiple connecting pieces are used to connect the terminals of the cells located at the same end in the multiple adjacent battery modules, so as to connect the multiple battery modules in series or in parallel. The first protective layer covers the main body and at least a portion of each of the connecting pieces.

[0006] Furthermore, the first protective layer includes an insulating layer covering at least a portion of the body and the connecting piece, and a fireproof layer covering the outside of the insulating layer.

[0007] Furthermore, the first protective layer covers the end of the connecting piece that is connected to the main body.

[0008] Furthermore, the connecting piece can overlap the end of the battery cell where the electrode post is located and abut against the electrode post; the connecting piece is provided with a countersunk platform for welding with the electrode post, and the countersunk platform coincides with the projection of the electrode post in the thickness direction of the connecting piece.

[0009] Furthermore, the battery module is provided with a busbar bracket, which is equipped with multiple busbars, and the busbars are used to connect the terminals of two adjacent battery cells; the connecting piece can be attached to the busbar bracket and connected to the corresponding terminal; the connecting piece is provided with a positioning hole, and the busbar bracket is provided with a positioning post, which can be inserted into the positioning hole.

[0010] Furthermore, the thickness of the main body is greater than the thickness of the connecting piece.

[0011] Furthermore, the main body includes a body portion connected to the connecting piece, and a folded portion connected to the body portion; the folded portion is folded to one side of the body portion in the thickness direction and abuts against the body portion.

[0012] Furthermore, it also includes a bracket assembly for placement within the battery pack housing; the bracket assembly includes a bracket body and a cable tie assembly disposed on the bracket body; the cable tie assembly includes a cable tie body for binding the main body and a connecting end disposed on the cable tie body; the bracket body is provided with a mounting hole, and the connecting end is inserted into the mounting hole.

[0013] Furthermore, corresponding to the cable tie assembly, the main body is provided with a second protective layer, which is arranged around the main body and located between the cable tie body and the first protective layer.

[0014] Compared with related technologies, this application has the following advantages: (1) The overcurrent assembly described in this application improves the connection strength between the overcurrent assembly and the terminal by setting the main body and connecting pieces and welding the connecting pieces to the terminal. At the same time, the main body and each connecting piece form an integrated structure, ensuring the structural strength of the overcurrent assembly itself. The first protective layer plays a protective role for the main body and connecting pieces, thereby improving the connection stability between each battery module.

[0015] (2) By setting the insulation layer, the electrical connection between the main body and the connecting piece and the external components can be effectively isolated, avoiding problems such as leakage and short circuit, and improving the safety performance of the overcurrent component. By covering the outside of the insulation layer with a fireproof layer, the fire resistance of the overcurrent component can be further improved. In the event of high temperature or open flame, the spread of fire can be slowed down, providing a more reliable guarantee for the safe operation of the battery module.

[0016] (3) By covering the end of the connecting piece connected to the main body with the first protective layer, the connecting piece is protected while ensuring that the part of the connecting piece connected to the pole is exposed, so as to facilitate the welding operation between the connecting piece and the pole.

[0017] (4) By setting the countersunk platform, the thickness of the countersunk platform position is small, so as to facilitate the welding and fixing of the connecting piece and the pole. At the same time, the countersunk platform can play a positioning role to ensure that the pole is welded in the designated position of the connecting piece and to ensure that there is sufficient welding area between the connecting piece and the pole, further ensuring the welding effect.

[0018] (5) By using the positioning holes and positioning posts, the position of the connecting piece on the battery cell can be accurately defined during the assembly and welding of the connecting piece and the battery cell, so as to avoid the connecting piece from shifting or misaligning, and to ensure the stability of the corresponding position of the sink and the pole, thereby further improving the welding quality and connection reliability, increasing assembly efficiency, and reducing rework caused by position deviation.

[0019] (6) By setting the thickness of the main body to be greater than the thickness of the connecting piece, not only can the structural strength of the main body be enhanced, but also the current carrying capacity of the main body can be enhanced.

[0020] (7) By setting the main body and the folded part, the folded part can abut against the main body after folding, thereby forming a stable stacked structure, further improving the structural strength of the main body and reducing the deformation of the main body. At the same time, when the main body and the connecting piece are made of the same thickness of plate, the thickness of the main body can still be increased by setting the folded part, which facilitates the processing and manufacturing of the flow assembly.

[0021] (8) The bracket assembly provides a stable mounting base for the overcurrent assembly, allowing it to be fixed inside the battery pack housing and preventing it from shaking or shifting within the battery pack. Meanwhile, the cable tie assembly facilitates quick and easy connection of the main body, simplifying the assembly process and increasing assembly speed.

[0022] (9) By setting the second protective layer, the first protective layer can be effectively buffered and protected when the cable tie body is used to tie the main body, so as to avoid the cable tie body from contacting the first protective layer and being damaged, thereby extending the service life of the first protective layer.

[0023] Another object of this application is to provide a battery pack having the overcurrent component described above.

[0024] The battery pack and / or the overcurrent assembly described in this application have the same technical effects as related technologies, and will not be described in detail here. Attached Figure Description

[0025] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the overcurrent assembly described in the embodiments of this application; Figure 2 This is a schematic diagram of the structure of the main body and connecting piece described in the embodiments of this application; Figure 3 This is a bottom view of the overcurrent assembly described in the embodiments of this application; Figure 4 for Figure 3 A sectional view at the location shown in AA; Figure 5 This is a schematic diagram of the overcurrent assembly installed in a battery pack according to an embodiment of this application; Figure 6 for Figure 3 A cross-sectional view at the location shown in BB; Explanation of reference numerals in the attached figures: 1. Main body; 101. Main body section; 102. Folding section; 2. Connecting piece; 201. Countersunk platform; 202. Positioning hole; 3. First protective layer; 301. Insulation layer; 302. Fireproof layer; 4. Support body; 5. Cable tie assembly; 501. Cable tie body; 502. Connecting end; 6. Second protective layer; 7. Battery module; 701. Battery cell; 7011. Terminal post; 7012. Cover plate assembly; 702. Busbar bracket; 7021. Busbar; 7022. Positioning post; 8. Crossbeam. Detailed Implementation

[0026] To make the technical solution and advantages of 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 not intended to limit the scope of this application.

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0028] Furthermore, it should be noted that in the description of this application, if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, these are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation on this application. In addition, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] Furthermore, in the description of this application, unless otherwise expressly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application in light of the specific circumstances.

[0030] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0031] The present application will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0032] An embodiment of the first aspect of this application provides an overcurrent component.

[0033] In related technologies, it is usually necessary to set outward-extending busbars on the cell terminals at the ends of each battery module, and then connect the various busbars together through bridging copper busbars to realize the series or parallel connection of multiple battery modules.

[0034] However, the bridging copper busbars and busbars are mostly connected by bolts. When the battery module is in a vibrating environment, the bolts are prone to loosening, which in turn affects the connection stability between the battery modules.

[0035] In view of this, in order to overcome the shortcomings of related technologies, the overcurrent component in this embodiment combines... Figure 1 As shown, the overall design includes multiple connecting pieces 2 located at opposite ends of the main body 1 and corresponding to multiple battery modules 7, as well as a first protective layer 3.

[0036] Multiple connecting pieces 2 extend outward from the same side of the main body 1 along a predetermined direction, and the multiple connecting pieces 2 are used to weld the terminals 7011 of the cells 701 located at the same end in the multiple adjacent battery modules 7, so as to connect the multiple battery modules 7 in series or in parallel. The first protective layer 3 covers the main body 1 and at least a portion of each connecting piece 2.

[0037] Therefore, by setting the main body 1 and the connecting piece 2, and welding the connecting piece 2 to the terminal 7011, the connection strength between the current-carrying component and the terminal 7011 is improved. At the same time, the main body 1 and each connecting piece 2 form an integrated structure, which ensures the structural strength of the current-carrying component itself. The first protective layer 3 plays a protective role for the main body 1 and the connecting piece 2, thereby improving the connection stability between each battery module 7.

[0038] Based on the above overview, specifically, in this embodiment, the connecting piece 2 of the overcurrent assembly can be directly welded to the terminal 7011. Compared to related technologies, which use bolts to fasten the busbar extending from the terminal 7011 to the external bridging copper busbar, this simplifies the assembly steps of the overcurrent assembly. In specific implementation, the main body 1 of this embodiment has only two connecting pieces 2 for connecting two adjacent battery modules 7 in series or in parallel.

[0039] In some of the exemplary implementations, combined with Figure 4 As shown, the first protective layer 3 includes an insulating layer 301 covering at least a portion of the main body 1 and the connecting piece 2, and a fireproof layer 302 covering the outside of the insulating layer 301.

[0040] By setting the insulation layer 301, the electrical connection between the main body 1 and a portion of the connecting piece 2 and external components can be effectively isolated, preventing problems such as leakage and short circuits, and improving the safety performance of the overcurrent component. By covering the outside of the insulation layer 301 with a fireproof layer 302, the fire resistance of the overcurrent component can be further improved. In the event of high temperature or open flame, the spread of fire can be slowed down, providing a more reliable guarantee for the safe operation of the battery module 7.

[0041] In specific implementation, the insulating layer 301 of this embodiment can be made of epoxy resin, and the fireproof layer 302 can be made of ceramic silicone tape. Of course, other materials known to those skilled in the art can also be used, as long as they can provide protection and insulation.

[0042] In some exemplary embodiments, the first protective layer 3 covers the end of the connecting piece 2 that is connected to the body 1.

[0043] By covering the end of the connecting piece 2 connected to the main body 1 with the first protective layer 3, the part of the connecting piece 2 connected to the pole post 7011 is exposed while protecting the connecting piece 2, so as to facilitate the welding operation between the connecting piece 2 and the pole post 7011.

[0044] In some of the exemplary implementations, combined with Figure 5 , Figure 6As shown, the connecting piece 2 can overlap the end of the battery cell 701 where the electrode post 7011 is located, and abut against the electrode post 7011. The connecting piece 2 is provided with a recess 201 for welding with the electrode post 7011, and the recess 201 and the projection of the electrode post 7011 in the thickness direction of the connecting piece 2 coincide.

[0045] The recessed platform 201 has a small thickness, which facilitates the welding and fixing of the connecting piece 2 and the pole post 7011. At the same time, the recessed platform 201 can play a positioning role to ensure that the pole post 7011 is welded to the designated position of the connecting piece 2 and to ensure that there is sufficient welding area between the connecting piece 2 and the pole post 7011, thereby further ensuring the welding effect.

[0046] Furthermore, in some exemplary embodiments, the battery module 7 is provided with a busbar bracket 702, which is equipped with multiple busbars 7021, and the busbars 7021 are used to connect the terminals 7011 of two adjacent battery cells 701. The connecting piece 2 can be attached to the busbar bracket 702 and connected to the corresponding terminal 7011. The connecting piece 2 is provided with a positioning hole 202, and the busbar bracket 702 is provided with a positioning post 7022, which can be inserted into the positioning hole 202.

[0047] The positioning hole 202 and positioning post 7022 work together to accurately define the position of the connecting piece 2 on the battery cell 701 during the assembly and welding process. Simultaneously, the busbar bracket 702 provides an installation foundation for the busbar 7021 and also positions the connecting piece 2 to prevent it from shifting or misaligning. This ensures the stability of the corresponding positions of the countersunk platform 201 and the electrode post 7011, further improving welding quality and connection reliability, increasing assembly efficiency, and reducing rework caused by positional deviations.

[0048] In a specific implementation, the battery cell 701 in this embodiment is a square battery cell 701. The top of the battery cell 701 is provided with a cover plate assembly 7012, and the cover plate assembly 7012 is provided with an electrode post 7011.

[0049] In some of the exemplary implementations, combined with Figure 2 As shown, the thickness of the main body 1 is greater than the thickness of the connecting piece 2.

[0050] By setting the thickness of the main body 1 to be greater than the thickness of the connecting piece 2, not only can the structural strength of the main body 1 be enhanced, but also the current carrying capacity of the main body 1 can be enhanced.

[0051] Specifically, in some exemplary embodiments, the main body 1 includes a body portion 101 connected to the connecting piece 2, and a folded portion 102 connected to the body portion 101. The folded portion 102 is folded to one side of the body portion 101 in the thickness direction and abuts against the body portion 101.

[0052] With the provision of the main body 101 and the folding part 102, the folded part 102 can abut against the main body 101 after folding, thereby forming a stable stacked structure, further improving the structural strength of the main body 1 and reducing the deformation of the main body 1. At the same time, even when the main body 1 and the connecting piece 2 are made of the same thickness of plate, the thickness of the main body 1 can still be increased by the provision of the folding part 102, thereby facilitating the processing and manufacturing of the flow assembly.

[0053] In a specific implementation, the folding part 102 of this embodiment is connected to the side of the main body 101 away from the connecting piece 2. This avoids interference between the connecting piece 2 and the folding part 102, which would affect the area of ​​the folding part 102. After the folding part 102 is folded into place, it can ensure that the folding part 102 covers the area where the connecting piece 2 is connected to the main body 101.

[0054] In some exemplary embodiments, the overcurrent assembly further includes a support assembly for placement within the battery pack housing. The support assembly includes a support body 4 and a cable tie assembly 5 disposed on the support body 4. The cable tie assembly 5 includes a cable tie body 501 for bundling the main body 1 and a connecting end 502 disposed on the cable tie body 501. The support body 4 has mounting holes into which the connecting end 502 is inserted.

[0055] The bracket assembly provides a stable mounting base for the current-carrying components, ensuring they are securely fixed within the battery pack housing and preventing movement or displacement. Simultaneously, the cable tie assembly 5 facilitates quick and easy connection of the main body 1, simplifying the assembly process and increasing assembly speed.

[0056] In practical implementation, the connecting end 502 is provided with a backstop structure to prevent the cable tie assembly 5 from falling off the bracket body 4 after the connecting end 502 is inserted into the mounting hole.

[0057] Furthermore, in this embodiment, the support assembly is mounted on a crossbeam 8 within the battery pack housing. This crossbeam 8 serves to limit and constrain each battery module 7, and it is located at the end of each battery module 7. The other end of the support body 4 in this embodiment is fixed to the top of the crossbeam 8 using connectors such as bolts or rivets, so that the crossbeam 8 serves as the mounting base for the support assembly.

[0058] The cable tie assembly 5 in this embodiment can also be a conventional cable tie known to those skilled in the art, which can bind the main body 1 and make it easy to fix it to the bracket body 4.

[0059] In some exemplary embodiments, corresponding to the cable tie assembly 5, the main body 1 is provided with a second protective layer 6, which is arranged around the main body 1 and located between the cable tie body 501 and the first protective layer 3.

[0060] By setting the second protective layer 6, the first protective layer 3 can be effectively buffered and protected when the cable tie body 501 binds the main body 1, so as to avoid the cable tie body 501 from contacting the first protective layer 3 and being damaged, thereby extending the service life of the first protective layer 3.

[0061] In practical implementation, the second protective layer 6 of this embodiment can be made of conventional cloth-based adhesive tape or other materials well known to those skilled in the art, as long as it can protect the first protective layer 3. At the same time, the provision of the second protective layer 6 can also increase the friction between the cable tie body 501 and the main body 1, so as to prevent the cable tie body 501 from sliding along the extension direction of the main body 1, thereby ensuring the connection stability between the cable tie body 501 and the main body 1.

[0062] It is worth noting that, regarding the overcurrent component of this embodiment, based on the above exemplary implementations, in specific implementation, as a preferred embodiment, it is still composed of... Figures 1 to 6 As shown, it includes two connecting pieces 2 located at opposite ends of the main body 1, and a first protective layer 3.

[0063] Two connecting pieces 2 extend outward from the same side of the main body 1 along a predetermined direction, and the two connecting pieces 2 are used to weld the terminals 7011 of the cells 701 located at the same end in two adjacent battery modules 7, so as to connect the two battery modules 7 in series or in parallel. A first protective layer 3 covers the main body 1 and the end of the connecting piece 2 connected to the main body 1. The first protective layer 3 includes an insulating layer 301 covering at least a portion of the main body 1 and the connecting piece 2, and a fireproof layer 302 covering the outside of the insulating layer 301.

[0064] Furthermore, the connecting piece 2 can overlap the end face of the battery cell 701 where the terminal post 7011 is located, and abut against the end of the terminal post 7011. The connecting piece 2 has a recess 201 for welding to the terminal post 7011, and the recess 201 and the projection of the terminal post 7011 in the thickness direction of the connecting piece 2 coincide. The battery module 7 has a busbar bracket 702, which is equipped with multiple busbars 7021, and the busbars 7021 are used to connect the terminal posts 7011 of two adjacent battery cells 701. The connecting piece 2 can overlap the busbar bracket 702 and connect to the corresponding terminal post 7011. The connecting piece 2 has a positioning hole 202, and the busbar bracket 702 has a positioning post 7022, which can be inserted into the positioning hole 202.

[0065] Furthermore, the thickness of the main body 1 is greater than the thickness of the connecting piece 2. The main body 1 includes a body portion 101 connected to the connecting piece 2, and a folded portion 102 connected to the body portion 101. The folded portion 102 is folded to one side in the thickness direction of the body portion 101 and abuts against the body portion 101.

[0066] Furthermore, the current-carrying assembly also includes a support assembly for placement within the battery pack housing. The support assembly includes a support body 4 and a cable tie assembly 5 disposed on the support body 4. The cable tie assembly 5 includes a cable tie body 501 for bundling the main body 1 and a connecting end 502 disposed on the cable tie body 501. The support body 4 has mounting holes, and the connecting end 502 is inserted into the mounting holes. Corresponding to the cable tie assembly 5, the main body 1 has a second protective layer 6, which surrounds the main body 1 and is located between the cable tie body 501 and the first protective layer 3.

[0067] In the preferred embodiment of the above-mentioned overcurrent component, the specific settings and arrangements of the main body 1, connecting piece 2, bracket assembly, etc. can still be referred to the descriptions in the above-mentioned exemplary embodiments. Furthermore, in this preferred embodiment, the beneficial effects brought about by the design of the main body 1, connecting piece 2, bracket assembly, etc. can also be referred to the descriptions in the above-mentioned exemplary embodiments.

[0068] The overcurrent assembly in this embodiment adopts the above design. By setting the main body 1 and the connecting piece 2, and welding the connecting piece 2 to the terminal 7011, the connection strength between the overcurrent assembly and the terminal 7011 is improved. At the same time, the main body 1 and each connecting piece 2 form an integrated structure, which ensures the structural strength of the overcurrent assembly itself. The first protective layer 3 plays a protective role for the main body 1 and the connecting piece 2, thereby improving the connection stability between each battery module 7.

[0069] An embodiment of the second aspect of this application provides a battery pack having a current-passing component as described above.

[0070] In this embodiment, the battery pack improves the connection strength between the current-carrying component and the terminal 7011 by setting the current-carrying component, and improves the stability of the electrical connection between each battery module 7.

[0071] The above descriptions are merely some embodiments of this application and are not intended to limit this application. The technical features or structures in the foregoing different embodiments can be arbitrarily combined to form other specific technical solutions as needed. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of the claims of this application.

Claims

1. An overcurrent assembly suitable for electrical connections within a battery pack, characterized in that: It includes a main body, multiple connecting pieces disposed at opposite ends of the main body and corresponding to multiple battery modules, and a first protective layer; Multiple connecting pieces extend outward from the same side of the main body along a preset direction, and the multiple connecting pieces are used to weld the terminals of the cells located at the same end in the multiple adjacent battery modules, so as to connect the multiple battery modules in series or in parallel. The first protective layer covers the main body and at least a portion of each of the connecting pieces.

2. The current-carrying component according to claim 1, characterized in that: The first protective layer includes an insulating layer covering at least a portion of the body and the connecting piece, and a fireproof layer covering the outside of the insulating layer.

3. The current-carrying component according to claim 1, characterized in that: The first protective layer covers the end of the connecting piece that is connected to the main body.

4. The current-carrying component according to claim 3, characterized in that: The connecting piece can overlap the end of the battery cell where the electrode post is located and abut against the electrode post; The connecting piece is provided with a recess for welding with the pole post, and the recess coincides with the projection of the pole post in the thickness direction of the connecting piece.

5. The current-carrying component according to claim 3, characterized in that: The battery module is provided with a busbar bracket, and the busbar bracket is equipped with multiple busbars, which are used to connect the terminals of two adjacent battery cells. The connecting piece can be attached to the busbar bracket and connected to the corresponding pole post; The connecting piece is provided with a positioning hole, and the busbar bracket is provided with a positioning post, which can be inserted into the positioning hole.

6. The current-carrying component according to claim 1, characterized in that: The thickness of the main body is greater than the thickness of the connecting piece.

7. The current-carrying component according to claim 1, characterized in that: The main body includes a body portion connected to the connecting piece, and a folding portion connected to the body portion; The folded portion is folded to one side of the body portion in the thickness direction and abuts against the body portion.

8. The overcurrent assembly according to any one of claims 1 to 7, characterized in that: It also includes a support assembly disposed within the battery pack housing; The support assembly includes a support body and a cable tie assembly disposed on the support body; The cable tie assembly includes a cable tie body for binding the main body, and a connecting end provided on the cable tie body; The bracket body is provided with mounting holes, and the connecting end is inserted into the mounting holes.

9. The current-carrying component according to claim 8, characterized in that: Corresponding to the cable tie assembly, the main body is provided with a second protective layer, which is arranged around the main body and located between the cable tie body and the first protective layer.

10. A battery pack, characterized in that: The battery pack includes a current-passing component as described in any one of claims 1 to 9.

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