Output terminal structure and battery pack

Abstract

Disclosed in the present application are an output terminal structure and a battery pack. The output terminal structure comprises: a base, which comprises a base body, a first busbar and a limiting connector, one end of the first busbar being located in the base body, the other end of the first busbar extending out of the base body, the limiting connector being a metal member and arranged on the base body, and the limiting connector being adapted to be in welded connection with an end plate; and a plug-in member, which comprises a housing and a second busbar, the housing being connected to the base body, the housing and the base body being insulating members, one end of the second busbar being located in the housing and electrically connected to one end of the first busbar located in the base body, and the other end of the second busbar extending out of the housing. In the output terminal structure of the present application, the welded connection between the limiting connector and the end plate enables the base body to be fixed on the end plate, so that the output terminal structure is fixedly connected to the end plate, and the welded connection has high connection rigidity and a simple connection structure, thereby better improving the connection efficiency and connection strength of the output terminal structure and the end plate.

Description

Output pole structure and battery pack

[0001] Cross-reference to related applications

[0002] The present application claims priority to the Chinese patent application No. CN2024214687935, filed on June 25, 2024, and entitled "Output pole structure and battery pack", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the technical field of batteries, in particular to an output pole structure and a battery pack. BACKGROUND

[0004] With the increasing severity of environmental and energy problems, the research and production of electric vehicles are increasingly valued. Among them, the safety of power batteries, as a key component of electric vehicles, is crucial. In the battery pack, an output pole is usually used to achieve electrical connection between the battery pack and the external circuit, and the output pole is usually arranged on an end plate. However, the connection strength between the output pole and the end plate in the related art is poor, and the output pole is easily detached when stressed, directly affecting the reliability of the battery pack. Therefore, there is room for improvement.

[0005] SUMMARY

[0006] Therefore, the purpose of the present application is to provide an output pole structure and a battery pack, which has the advantage of high connection strength with the end plate.

[0007] In a first aspect, the present application provides an output pole structure for a battery pack, the battery pack comprising the output pole structure and an end plate, the output pole module being arranged on the end plate, the output pole structure comprising: a base comprising a seat body, a first busbar and a limiting connecting piece, one end of the first busbar being located in the seat body, the other end of the first busbar extending out of the seat body, the limiting connecting piece being a metal piece and being arranged in the seat body, the limiting connecting piece being adapted to be welded to the end plate; an insert comprising a shell and a second busbar, the shell being connected to the seat body and the shell and the seat body being insulating pieces, one end of the second busbar being located in the shell and being electrically connected to the one end of the first busbar located in the seat body, the other end of the second busbar extending out of the shell.

[0008] Beneficial effect: by welding the limiting connecting piece to the end plate, the seat body can be fixed on the end plate, thereby achieving fixed connection of the output pole structure and the end plate, and the welding connection has large connection stiffness and simple connection structure, thereby the connection efficiency and the connection strength of the output pole structure and the end plate can be improved.

[0009] In an alternative embodiment, the bottom of the seat body is provided with a plug-in column, and a mounting groove is formed on the end plate of the battery pack, the plug-in column being adapted to be plugged into the mounting groove.

[0010] In an alternative embodiment, the limiting connector and the plug-in column are located on different sides of the seat body.

[0011] In an alternative embodiment, a first plug-in part is formed on a side of the seat body facing the shell, a plug-in groove open to the shell is formed in the first plug-in part, a connecting nut is arranged in the plug-in groove, a clamping protrusion is formed on the outer circumferential surface of the first plug-in part, a second plug-in part is formed on a side of the shell facing the seat body, a through hole is formed in the second plug-in part and penetrates the shell along the axial direction of the plug-in groove, a connecting bolt is arranged in the through hole and screwed with the connecting nut, and a clamping arm is formed on the shell and located on the outer circumferential side of the second plug-in part, a clamping hole is formed on the clamping arm and adapted to clamp the clamping protrusion.

[0012] In an alternative embodiment, the inner circumferential surface of the plug-in groove is formed with a limiting groove extending along the extension direction of the plug-in groove, and a limiting protrusion is formed on the outer circumferential surface of the second plug-in part and slidably arranged in the limiting groove along the extension direction of the plug-in groove.

[0013] In an alternative embodiment, the clamping protrusion, the clamping arm, the limiting groove, and the limiting protrusion are all arranged in multiple.

[0014] In an alternative embodiment, the number of the clamping protrusion, the clamping arm, the limiting groove, and the limiting protrusion is the same.

[0015] In an alternative embodiment, the head surface of the connecting bolt is provided with an insulating layer, and the plug-in part further comprises a mounting handle integrally injection molded with the insulating layer, the mounting handle being configured to separate from the insulating layer when the torque between the mounting handle and the insulating layer is greater than a preset torque threshold.

[0016] In an alternative embodiment, the shell is an integrally injection molded part; and / or, the seat body is an integrally injection molded part.

[0017] In a second aspect, the application provides a battery pack, comprising: the output pole structure described above; an end plate; and a battery module, the end plate being located on one side of the battery module, and one end of the first busbar extending out of the seat body being electrically connected with the battery module.

[0018] Beneficial effects: through the welding connection of the limiting connecting piece and the end plate, the seat body can be fixed on the end plate, so as to realize the fixed connection of the output pole structure and the end plate, and the welding connection has large connection rigidity and simple connection structure, so that the connection efficiency and the connection strength of the output pole structure and the end plate can be improved, and then the stability of the battery pack can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the specific embodiments or prior art of the present application, the drawings needed to be used in the description of the specific embodiments or prior art will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0020] Fig. 1 is a schematic view of the output pole structure and the end plate according to an embodiment of the present application;

[0021] Fig. 2 is an exploded view of the output pole structure according to an embodiment of the present application;

[0022] Fig. 3 is a schematic view of the output pole structure according to an embodiment of the present application, wherein the mounting handle is not separated;

[0023] Fig. 4 is a schematic view of the output pole structure according to an embodiment of the present application, wherein the mounting handle is separated;

[0024] Fig. 5 is a schematic view of the insert of the output pole structure mounted to the base from another angle according to an embodiment of the present application;

[0025] Fig. 6 is a schematic view of the base of the output pole structure according to an embodiment of the present application;

[0026] Fig. 7 is a front view of the base of the output pole structure according to an embodiment of the present application;

[0027] Fig. 8 is a left view of the base of the output pole structure according to an embodiment of the present application;

[0028] Fig. 9 is a top view of the base of the output pole structure according to an embodiment of the present application;

[0029] Fig. 10 is a schematic view of the insert of the output pole structure according to an embodiment of the present application;

[0030] Fig. 11 is a front view of the insert of the output pole structure according to an embodiment of the present application;

[0031] Fig. 12 is a bottom view of the insert of the output pole structure according to an embodiment of the present application;

[0032] Fig. 13 is a top view of the insert of the output pole structure according to an embodiment of the present application;

[0033] FIG. 14 is a schematic view of a battery pack according to an embodiment of the present application.

[0034] Reference signs: 100, battery pack; 10, output pole structure; 1, base; 11, seat body; 111, first plug-in part; 112, plug-in slot; 113, clamping protrusion; 114, limiting slot; 12, first busbar; 13, limiting connecting piece; 14, plug-in column; 15, connecting nut; 2, plug-in part; 21, shell; 211, second plug-in part; 212, through hole; 213, clamping arm; 214, clamping hole; 215, limiting protrusion; 22, second busbar; 23, connecting bolt; 24, mounting handle; 20, end plate; 30, battery module. DETAILED DESCRIPTION

[0035] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the same or like component have the same or similar designations throughout the attaching figures. The embodiments described below are exemplary in nature, and are intended to be illustrative of the present application rather than to limit the same.

[0036] The disclosure that follows provides many different embodiments, or examples, for implementing different structures of the present application. For the purpose of simplicity, the elements of the specific examples below are described in a manner that is intended to convey the essence of the embodiments. Of course, it is to be understood that the application is not limited to the precise elements and / or example described below. Furthermore, the application can be used in different embodiments that are not expressly described below. The following description is provided as an enabling teaching of the application. Studies based on the application will facilitate the development of variations of the application that are not described or rendered obvious by the above description for the application.

[0037] The output pole structure 10 according to an embodiment of the first aspect of the present application is described below with reference to the attached drawings.

[0038] As shown in FIGS. 1-14, the output pole structure 10 according to the first aspect of the present application is used in a battery pack 100, the battery pack 100 comprising the output pole structure 10 and an end plate 20, the output pole module being arranged on the end plate 20, the output pole structure 10 comprising: a base 1 and an insert 2, the base 1 comprising a seat body 11, a first busbar 12 and a limiting connecting piece 13, one end of the first busbar 12 being located in the seat body 11, the other end of the first busbar 12 extending out of the seat body 11, the limiting connecting piece 13 being a metal piece and arranged on the seat body 11, the limiting connecting piece 13 being adapted to be welded to the end plate 20, the insert 2 comprising a shell 21 and a second busbar 22, the shell 21 being connected to the seat body 11 and the shell 21 and the seat body 11 being insulating pieces, one end of the second busbar 22 being located in the shell 21 and electrically connected to the one end of the first busbar 12 located in the seat body 11, the other end of the second busbar 22 extending out of the shell 21.

[0039] That is, after the base 1 and the insert 2 are assembled in place, the one end of the first busbar 12 located in the seat body 11 is connected to the one end of the second busbar 22 located in the shell 21, the one end of the first busbar 12 located outside the seat body 11 is convenient for the first busbar 12 to be electrically connected to the battery module 30, and the one end of the second busbar 22 located outside the shell 21 is convenient for the second busbar 12 to be electrically connected to an external circuit, so that the battery module 30 can be electrically connected to the external circuit through the first busbar 12 and the second busbar 22 to realize the delivery of current. Through the welding connection of the limiting connecting piece 13 and the end plate 20, the seat body 11 can be fixed on the end plate 20, so as to realize the fixed connection of the output pole structure 10 and the end plate 20, and the welding connection has large connection rigidity and simple connection structure, so as to better improve the connection efficiency and connection strength of the output pole structure 10 and the end plate 20.

[0040] According to the output pole structure 10 of the first aspect of the present application, through the welding connection of the limiting connecting piece 13 and the end plate 20, the seat body 11 can be fixed on the end plate 20, so as to realize the fixed connection of the output pole structure 10 and the end plate 20, and the welding connection has large connection rigidity and simple connection structure, so as to better improve the connection efficiency and connection strength of the output pole structure 10 and the end plate 20.

[0041] In some embodiments, the first busbar 12 is a copper piece, and an aluminum bar is welded to the one end of the first busbar 12 extending out of the seat body 11. In other embodiments, the first busbar 12 is an aluminum piece.

[0042] According to some embodiments of the present application, the bottom of the seat body 11 is provided with a plug-in column 14, and a mounting groove is formed on the end plate 20, and the plug-in column 14 is adapted to be plugged into the mounting groove. That is, the seat body 11 is connected to the end plate 20 by welding based on the limiting connecting piece 13, and is connected to the end plate 20 by plugging based on the plug-in column 14. In this way, the connection position between the base 1 and the end plate 20 can be better increased, so that the connection strength of the output pole structure 10 and the end plate 20 can be improved to prevent the output pole structure 10 from falling off the end plate 20. In addition, the matching mode of the plug-in connection is simple, so that the connection difficulty of the output pole structure 10 and the end plate 20 can be reduced on the basis of improving the connection strength of the output pole structure 10 and the end plate 20. In addition, after the plug-in column 14 is inserted into the mounting groove, the welding connection of the limiting connecting piece 13 and the end plate 20 is performed, so that the position of the limiting connecting piece 13 on the end plate 20 can be better positioned by the cooperation of the plug-in column 14 and the mounting groove, and the connection difficulty of the limiting connecting piece 13 and the end plate 20 can be reduced.

[0043] According to some embodiments of the present application, the limiting connecting piece 13 and the plug-in column 14 are located on different sides of the seat body 11. That is, the limiting connecting piece 13 can be arranged on the other side of the seat body 11 except the bottom. In this way, the step of the limiting connecting piece 13 interfering with the plug-in column 14 inserting into the mounting groove can be better avoided, and a larger operation space can be provided for the welding connection of the limiting connecting piece 13 to reduce the welding difficulty of the limiting connecting piece 13.

[0044] In a specific example, one end of the limiting connecting piece 13 is fixed on the side of the seat body 11 away from the plug-in column 14, the other end of the limiting connecting piece 13 extends along the extension direction of the plug-in column 14 towards the bottom of the seat body 11, and the other end of the limiting connecting piece 13 is located outside the plug-in column 14. After the plug-in column 14 is inserted into the mounting groove, the limiting connecting piece 13 abuts against the side of the end plate 20 outside the mounting groove, and then the other end of the limiting connecting piece 13 can be fixed on the outer side of the end plate 20 by welding.

[0045] According to some embodiments of the present application, the side of the seat body 11 facing the shell 21 forms a first plug-in part 111, a plug-in groove 112 open to the shell 21 is formed in the first plug-in part 111, a connecting nut 15 is arranged in the plug-in groove 112, a clamping protrusion 113 is formed on the outer circumferential surface of the first plug-in part 111, the side of the shell 21 facing the seat body 11 forms a second plug-in part 211, a through hole 212 penetrating through the shell 21 along the axial direction of the second plug-in part 211 is formed in the second plug-in part 211, a connecting bolt 23 screwed with the connecting nut 15 is arranged in the through hole 212, and a clamping arm 213 located on the outer circumferential side of the second plug-in part 211 is formed on the shell 21, and a clamping hole 214 clamped and matched with the clamping protrusion 113 is formed on the clamping arm 213.

[0046] That is, during the process of inserting the plug-in 2 into the base 1, the second plug-in part 211 is gradually inserted into the plug-in slot 112 until the clamping protrusion 113 cooperates with the clamping hole 214 on the clamping arm 213. Through the cooperation of the clamping protrusion 113 and the clamping hole 214, the relative position of the seat body 11 and the shell 21 in the extension direction of the plug-in slot 112 can be better maintained. When the clamping protrusion 113 cooperates with the clamping hole 214, it indicates that the seat body 11 and the shell 21 are installed in place. At this time, the connecting bolt 23 is applied to the connecting nut 15 to make it close to the connecting nut 15 and realize the fixed connection of the base 1 and the plug-in 2 through the screw connection. Therefore, the cooperation of the clamping protrusion 113 and the clamping hole 214 can provide good pre-positioning effect for the connection of the connecting bolt 23 and the connecting nut 15, which is beneficial to improve the connection efficiency of the connecting bolt 23 and the connecting nut 15. Moreover, through the cooperation of the clamping protrusion 113 and the clamping hole 214, the connection stability of the seat body 11 and the shell 21 can be improved, so that the stability of the connection of the base 1 and the plug-in 2 can be improved.

[0047] In addition, the cooperation position of the clamping protrusion 113 and the clamping hole 214 is located on the outer peripheral side of the first plug-in part 111, which facilitates the operator to operate the clamping protrusion 113 to release the clamping relationship between the clamping protrusion 113 and the clamping hole 214, thereby reducing the difficulty of disassembling the seat body 11 and the shell 21.

[0048] In one specific example, the first bus bar 12 is electrically connected with the connecting nut 15, the first bus bar 12 is provided with a first conductive ring, the first conductive ring is sleeved on the outer peripheral side of the connecting nut 15 and is electrically connected with the connecting nut 15, the second bus bar 22 is provided with a second conductive ring, and the connecting bolt 23 penetrates the second conductive ring. After the base 1 and the plug-in 2 are connected, the first conductive ring and the second conductive ring abut along the axial direction of the connecting bolt 23, and the head of the connecting bolt 23 abuts against the second conductive ring, so that the first bus bar 12 and the second bus bar 22 are electrically connected.

[0049] According to some embodiments of the present application, the inner peripheral surface of the plug-in slot 112 is formed with a limiting groove 114 extending in the extension direction of the plug-in slot 112, and the outer peripheral surface of the second plug-in part 211 is formed with a limiting protrusion 215 which is slidably arranged in the limiting groove 114 in the extension direction of the plug-in slot 112. That is, when the first plug-in part 111 is inserted into the plug-in slot 112, the limiting protrusion 215 is aligned with the limiting groove 114 and inserted, and the limiting protrusion 215 is limited by the limiting groove 114, which can better limit the installation direction of the first plug-in part 111 when it is inserted into the plug-in slot 112, and can better avoid the rotation of the first plug-in part 111 relative to the plug-in slot 112, thereby improving the connection reliability of the seat body 11 and the shell 21.

[0050] According to some embodiments of the present application, the plurality of clamping protrusions 113 and the plurality of clamping arms 213 are arranged in one-to-one correspondence with the plurality of clamping holes 214, thereby better increasing the connection position of the seat body 11 and the shell 21 after being inserted into place, thereby improving the strength of the predetermined positioning function for connecting the connecting bolt 23 and the connecting nut 15, and at the same time, improving the connection strength of the seat body 11 and the shell 21. In addition, the plurality of limiting grooves 114 and the plurality of limiting protrusions 215 are arranged in one-to-one correspondence, thereby forming multiple limiting between the first insertion part 111 and the second insertion part 211, thereby improving the limiting effect of the second insertion part 211 on the first insertion part 111, to further improve the connection reliability of the seat body 11 and the shell 21.

[0051] According to some embodiments of the present application, the number of clamping protrusions 113, clamping arms 213, limiting grooves 114 and limiting protrusions 215 is the same. Therefore, the shell 21 can be flexibly selected according to the installation requirements to be installed on the base 1, that is, the plug-in part 2 can have a plurality of different installation angles relative to the base 1, thereby making the output pole structure 10 can be flexibly adapted to different installation requirements, which is beneficial to improve the application range of the output pole structure 10.

[0052] In a specific example, the clamping protrusions 113, the clamping arms 213, the limiting grooves 114 and the limiting protrusions 215 are each provided with four.

[0053] According to some embodiments of the present application, the head surface of the connecting bolt 23 is provided with an insulating layer, thereby better avoiding the risk of electric shock caused by accidental contact with the connecting bolt 23, and improving the safety protection performance of the output pole structure 10. The plug-in part 2 further comprises an installation handle 24 integrally injection molded with the insulating layer, and the installation handle 24 is configured to be separated from the insulating layer when the torque between the installation handle 24 and the insulating layer is greater than a preset torque threshold. That is, the tightening force can be applied to the connecting bolt 23 by rotating the installation handle 24, and when the connecting bolt 23 and the connecting nut 15 are screwed, continuing to apply the rotating force to the installation handle 24 will cause the installation handle 24 and the insulating layer to rotate relative to each other and separate from the insulating layer in the limit state. Therefore, the preset torque threshold can be set according to the torque of the connecting bolt 23 and the connecting nut 15, thereby avoiding the tightening force applied to the connecting bolt 23 being too large, and when the installation handle 24 and the insulating layer are separated, it indicates that the connecting bolt 23 and the connecting nut 15 have been screwed, thereby eliminating the step of manually detecting whether the connecting bolt 23 and the connecting nut 15 are screwed, thereby reducing personnel costs and improving production efficiency and production rhythm.

[0054] In one specific example, the preset torque threshold range for separating the handle 24 from the insulating layer is 8-10 Nm, so that the fatigue of the connecting bolt 23 caused by excessive tightening force applied to the connecting bolt 23 can be avoided while ensuring the connection strength of the connecting bolt 23 and the connecting nut 15.

[0055] According to some embodiments of the present application, the shell 21 is an integrally injection molded part. Thus, the integrally molded structure not only ensures the structural and performance stability of the shell 21, but also facilitates molding and simple manufacturing, and saves the assembly parts used for connection and the connection process, thereby reducing production cost.

[0056] Specifically, in the production process of the plug-in 2, the connecting bolt 23 and the second bus bar 22 can be packaged into the shell 21 by an injection molding process, and at the same time, the second plug-in part 211, the clamping arm 213, the clamping hole 214, the through hole 212, and the limiting protrusion 215 are formed, and the insulating layer and the mounting handle 24 can be injected at the head of the connecting bolt 23 at the same time, so that the process of connecting each part of the plug-in 2 can be saved, and the production efficiency of the plug-in 2 can be improved.

[0057] According to some embodiments of the present application, the seat body 11 is an integrally injection molded part. Thus, the integrally molded structure not only ensures the structural and performance stability of the seat body 11, but also facilitates molding and simple manufacturing, and saves the assembly parts used for connection and the connection process, thereby reducing production cost.

[0058] Specifically, in the production process of the base 1, the first bus bar 12, the limiting connecting piece 13, and the connecting nut 15 can be packaged into the seat body 11 by an injection molding process, and at the same time, the first plug-in part 111, the plug-in slot 112, the clamping protrusion 113, the limiting slot 114, and the plug-in column 14 are formed, so that the process of connecting each part of the base 1 can be saved, and the production efficiency of the base 1 can be improved.

[0059] The battery pack 100 according to the second aspect of the present application will be described below with reference to the accompanying drawings.

[0060] The battery pack 100 according to the second aspect of the present application includes an output pole structure 10, an end plate 20, and a battery module 30. The end plate 20 is located on one side of the battery module 30, and the first bus bar 12 is electrically connected to the battery module 30 at one end of the seat body 11. The seat body 11 is fixed on the end plate 20 through the welding connection of the limiting connecting piece 13 and the end plate 20, so as to realize the fixed connection of the output pole structure 10 and the end plate 20. The welding connection has large connection rigidity and simple connection structure, so as to improve the connection efficiency and strength of the output pole structure 10 and the end plate 20, and further improve the stability of the battery pack 100.

[0061] According to the battery pack 100 of the second aspect of the present application, the seat body 11 can be fixed on the end plate 20 through the welding connection of the limiting connecting piece 13 and the end plate 20, so as to realize the fixed connection of the output pole structure 10 and the end plate 20, and the welding connection has large connection rigidity and simple connection structure, so that the connection efficiency and the connection strength of the output pole structure 10 and the end plate 20 can be improved, and then the stability of the battery pack 100 can be improved.

[0062] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents. Industrial applicability

[0063] Through the welding connection of the limiting connecting piece and the end plate, the seat body can be fixed on the end plate, so as to realize the fixed connection of the output pole structure and the end plate, and the welding connection has large connection rigidity and simple connection structure, so that the connection efficiency and the connection strength of the output pole structure and the end plate can be improved, and then the stability of the battery pack can be improved.

Claims

1. An output electrode structure for a battery pack, characterized in that, The battery pack includes the output electrode structure and an end plate, the output electrode module is disposed on the end plate, and the output electrode structure includes: The base includes a base body, a first busbar, and a limiting connector. One end of the first busbar is located inside the base body, and the other end of the first busbar extends out of the base body. The limiting connector is a metal part and is disposed in the base body. The limiting connector is adapted to be welded to the end plate. The plug-in includes a housing and a second busbar. The housing is connected to the base and the housing and the base are insulators. One end of the second busbar is located inside the housing and is electrically connected to one end of the first busbar located inside the base. The other end of the second busbar extends out of the housing.

2. The output pole structure according to claim 1, characterized in that, The bottom of the base is provided with a plug-in post, and an installation groove is formed on the end plate. The plug-in post is adapted to be inserted into the installation groove.

3. The output pole structure according to claim 2, characterized in that, The limiting connector and the plug are located on different sides of the base.

4. The output pole structure according to claim 1, characterized in that, A first insertion portion is formed on the side of the base facing the housing. An insertion groove is formed in the first insertion portion that opens towards the housing. A connecting nut is provided in the insertion groove. A snap-fit ​​protrusion is formed on the outer peripheral surface of the first insertion portion. A second insertion portion is formed on the side of the housing facing the base. A through hole is formed in the second insertion portion that extends through the housing along the axial direction of the insertion groove. A connecting bolt that is screwed into the through hole is provided in the through hole. A snap-fit ​​arm is formed on the housing located on the outer peripheral side of the second insertion portion. A snap-fit ​​hole is formed on the snap-fit ​​arm that engages with the snap-fit ​​protrusion.

5. The output pole structure according to claim 4, characterized in that, The inner circumferential surface of the insertion groove is formed with a limiting groove extending along the extension direction of the insertion groove, and a limiting protrusion is formed on the outer circumferential surface of the second insertion part. The limiting protrusion is slidably disposed in the limiting groove along the extension direction of the insertion groove.

6. The output pole structure according to claim 5, characterized in that, The snap-fit ​​protrusion, the snap-fit ​​arm, the limiting groove, and the limiting protrusion are all provided with multiple protrusions evenly spaced along the circumference of the insertion groove.

7. The output pole structure according to claim 6, characterized in that, The number of the snap-fit ​​protrusion, the snap-fit ​​arm, the limiting groove, and the limiting protrusion are the same.

8. The output pole structure according to claim 4, characterized in that, The head surface of the connecting bolt is provided with an insulating layer, and the plug-in also includes an installation handle integrally injection molded with the insulating layer. The installation handle is configured to separate from the insulating layer when the torque between the handle and the insulating layer is greater than a preset torque threshold.

9. The output pole structure according to claim 1, characterized in that, The housing is a one-piece injection molded part; and / or, the base is a one-piece injection molded part.

10. A battery pack, characterized in that, include: The output pole structure according to any one of claims 1-9; End plate; A battery module, wherein the end plate is located on one side of the battery module, and one end of the first busbar extending out of the base is electrically connected to the battery module.

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