Riveting structure, battery top cover assembly and battery

Abstract

The utility model relates to battery technical field provides a riveting structure, battery top cover subassembly and battery, riveting structure includes: first insulating part is used to set up on the top cover body, and the position corresponding with pole hole forms the first through -hole that supplies pole to wear, the surface of first insulating part side away from top cover body forms the boss, riveting block, the position corresponding with pole hole forms the second through -hole that supplies pole to wear, the surface of riveting block side close to top cover body forms the recessed groove that is suitable for inserting boss, and recessed groove and boss plug -in cooperation. The riveting structure passes through the boss of first insulating part and the recessed groove of riveting block plug -in cooperation, makes first insulating part can form cooperation between riveting block, can evenly disperse the local rise material stress produced in the riveting process to the contact surface of boss and recessed groove, significantly reduces the stress concentration on the surface of first insulating part, thereby avoids the crack or cracking problem caused by stress overrun, improves the reliability of whole riveting structure.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a riveting structure, a battery top cover assembly, and a battery. Background Technology

[0002] Traditional battery top cover assemblies typically employ a combination structure of a top cover body, terminals, riveting blocks, and sealing rings. The terminals pass through the terminal holes in the top cover body, and a riveting process causes localized plastic deformation of the terminal material (i.e., "material expansion") to compress the sealing ring and form a sealing interface. During this process, the riveting block is in direct contact with the riveting area of ​​the terminal, and insulation and fixation are achieved through its interaction with the upper plastic layer.

[0003] However, existing technology has the following drawbacks: During the riveting process, localized expansion of the pole is directly transmitted to the riveting block in contact with it, causing non-uniform deformation of the stress-bearing area of ​​the riveting block. Since the riveting block and the upper plastic are connected via a mechanical mating structure, the deformation of the riveting block is further transmitted to the first insulating component, generating concentrated stress at their interface. When the stress exceeds the tensile strength of the upper plastic material, microcracks or even full-blown cracks can easily occur on its surface or inside, leading to insulation failure. Utility Model Content

[0004] This utility model provides a riveting structure, a battery top cover assembly, and a battery to solve the problem that in the existing battery top cover assembly, during the riveting process, the local expansion of the electrode post is directly transmitted to the riveting block in contact with it, resulting in non-uniform deformation of the stress area of ​​the riveting block.

[0005] In a first aspect, this utility model provides an electric riveting structure applied to a battery top cover assembly including a top cover body and a terminal post, wherein a terminal post hole is formed on the top cover body for the terminal post to pass through.

[0006] The riveting structure includes:

[0007] A first insulating member is provided on the top cover body, and a first through hole is formed at the position corresponding to the pole hole for the pole to pass through. A boss is formed on the surface of the first insulating member away from the top cover body.

[0008] The rivet block has a second through hole at the position corresponding to the pole hole for the pole to pass through. The surface of the rivet block near the top cover body has a recessed groove suitable for inserting the boss. The recessed groove is inserted into the boss.

[0009] According to the riveting structure provided by this utility model, the first insulating member has a mounting groove formed on the side away from the top cover body, the boss is disposed in the mounting groove, the riveting block is embedded in the mounting groove, and is fixed in the mounting groove by the recessed groove and the boss.

[0010] According to the riveting structure provided by this utility model, the bottom and / or wall of the mounting groove are provided with the boss, and the riveting block is provided with the recessed groove adapted to the boss at the corresponding position.

[0011] According to the riveting structure provided by this utility model, the boss is a strip-shaped boss, and the recess is a strip-shaped recess adapted to the strip-shaped boss.

[0012] According to the riveting structure provided by this utility model, the bottom of the mounting groove and / or the groove wall are provided with a plurality of strip-shaped protrusions extending along a first direction and / or a second direction, and the riveting block is provided with a plurality of strip-shaped recessed grooves extending along the first direction and / or the second direction at corresponding positions.

[0013] Wherein, the first direction is perpendicular to the second direction.

[0014] Secondly, this utility model also provides a battery top cover assembly, comprising:

[0015] The top cover body has pole hole;

[0016] The riveting structure described above;

[0017] The pole is passed through and fixed in sequence in the pole hole, the first through hole and the second through hole.

[0018] According to the present invention, a battery top cover assembly is provided, wherein the riveting structure is disposed on the first side of the top cover body;

[0019] The battery top cover assembly also includes:

[0020] The second insulating element is disposed on the second side of the top cover body and has a third through hole corresponding to the pole hole. The pole passes through and is fixed in the third through hole, the pole hole, the first through hole and the second through hole in sequence.

[0021] According to the present invention, a battery top cover assembly is provided, wherein one of the second insulating member and the second side of the top cover body is provided with a protrusion, and the other is provided with a groove suitable for the protrusion to be inserted, and the protrusion and the groove are inserted and engaged to allow the second insulating member to be disposed on the top cover body.

[0022] According to the present invention, a battery top cover assembly is provided, wherein a liquid injection hole is formed on the top cover body, and a connecting groove is formed on the second insulating member opposite to the liquid injection hole, and a connecting hole is provided in the connecting groove.

[0023] Thirdly, this utility model also provides a battery, comprising:

[0024] The battery includes a housing, an electrode assembly, and the aforementioned battery top cover assembly, wherein the electrode assembly is located inside the housing and the battery top cover assembly is fixed to the opening of the housing.

[0025] The riveting structure, battery top cover assembly, and battery provided by this utility model, through the insertion and cooperation of the boss of the first insulating component and the recessed groove of the riveting block, enable the first insulating component to form a fit with the riveting block. This can evenly distribute the local expansion stress generated during the riveting process to the contact surface of the boss and the recessed groove, significantly reducing the stress concentration on the surface of the first insulating component, thereby avoiding cracks or ruptures caused by excessive stress, improving the reliability of the entire riveting structure, and thus ensuring the long-term reliability of the battery's insulation performance. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a three-dimensional structural diagram of the battery top cover assembly provided by this utility model.

[0028] Figure 2 This is a schematic diagram of the front of the riveting block provided by this utility model.

[0029] Figure 3 This is a schematic diagram of the back of the riveting block provided by this utility model.

[0030] Figure 4 This is a schematic diagram of the first insulating component provided by this utility model.

[0031] Figure 5 This is a front view of the battery top cover assembly provided by this utility model.

[0032] Figure 6 yes Figure 5 A schematic diagram of section AA.

[0033] Figure 7 This is a disassembly diagram of the battery top cover assembly provided by this utility model.

[0034] Figure label:

[0035] 1. Riveting structure; 11. First insulating component; 110. Mounting groove; 111. First through hole; 112. Boss;

[0036] 12. Riveting block; 121. Second through hole; 122. Recessed groove;

[0037] 2. Top cover body; 21. Pole post hole; 22. Liquid injection hole; 23. Groove;

[0038] 3. Pole post;

[0039] 4. Second insulating component; 41. Connecting groove; 42. Protrusion; 43. Third through hole;

[0040] 5. Third insulating component. Detailed Implementation

[0041] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model 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 the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0042] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0043] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0044] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0045] The following is combined with Figures 1-7 This utility model describes the riveting structure 1, the battery top cover assembly, and the battery.

[0046] This application provides a riveting structure 1, such as... Figures 1 to 7 As shown, the riveting structure 1 is applied to a battery top cover assembly including a top cover body 2 and a terminal post 3. The top cover body 2 has a terminal post hole 21 for the terminal post 3 to pass through. The riveting structure 1 includes a first insulating member 11 and a riveting block 12. The first insulating member 11 is disposed on the top cover body 2, and a first through hole 111 for the terminal post 3 to pass through is formed at a position corresponding to the terminal post hole 21. A boss 112 is formed on the surface of the first insulating member 11 away from the top cover body 2. A second through hole 121 for the terminal post 3 to pass through is formed at a position corresponding to the terminal post hole 21. A recessed groove 122 suitable for inserting the boss 112 is formed on the surface of the riveting block 12 near the top cover body 2. The recessed groove 122 and the boss 112 are inserted into each other.

[0047] In this embodiment, the first insulating component 11 and the riveting block 12 are sequentially disposed on the top cover body 2. The riveting block 12 and the first insulating component 11 are integrated by injection molding and coating process. After the riveting aluminum block is processed and formed, the riveting block 12 and the first insulating component 11 are combined into an integrated structure by injection molding and coating process.

[0048] The riveting structure 1, through the cooperation of the riveting block 12 and the first insulating member 11, with the pole hole 21 passing through the pole hole 21, the first through hole 111, and the second through hole 121, firmly fixes the pole 3 to the top cover body 2, ensuring the stability of the connection between the pole 3 and the top cover body 2. The first insulating member 11, through the engagement of the boss 112 with the recessed groove 122 of the riveting block 12, ensures that the first insulating member 11 will not shift or loosen during the riveting process.

[0049] During the riveting process, the localized stress caused by the expansion between the pole post 3 and the top cover body 2 is evenly distributed through the contact surface between the boss 112 and the recessed groove 122, preventing stress concentration on the surface of the first insulating component 11. By dispersing the stress, the possibility of the first insulating component 11 cracking or breaking due to excessive stress is significantly reduced, thereby improving the reliability of the entire riveting structure 1.

[0050] The riveting structure 1 provided by this utility model, through the insertion and cooperation of the boss 112 of the first insulating member 11 and the recessed groove 122 of the riveting block 12, enables the first insulating member 11 to form a stable fit with the riveting block 12. This can evenly distribute the local expansion stress generated during the riveting process to the contact surface of the boss 112 and the recessed groove 122, significantly reducing the stress concentration on the surface of the first insulating member 11, thereby avoiding cracks or ruptures caused by excessive stress, improving the reliability of the entire riveting structure 1, and thus ensuring the reliability of the long-term insulation performance of the battery.

[0051] In some embodiments, such as Figures 1 to 4 As shown, the first insulating member 11 has a mounting groove 110 formed on the side away from the top cover body 2, the boss 112 is disposed in the mounting groove 110, the rivet block 12 is embedded in the mounting groove 110, and is fixed in the mounting groove 110 by the recessed groove 122 and the boss 112.

[0052] Specifically, the mounting groove 110 in the first insulating member 11 is used to house the rivet block 12. The shape and size of the mounting groove 110 can limit the displacement of the rivet block 12 during the riveting process, ensuring that the relative position between the rivet block 12 and the first insulating member 11 is stable.

[0053] In addition to the constraints of the mounting groove 110, a boss 112 is also provided within the mounting groove 110. The boss 112, through its insertion and engagement with the recessed groove 122 of the riveting block 12, further enhances the mechanical connection strength between the riveting block 12 and the first insulating component 11. The engagement of the recessed groove 122, the boss 112, and the mounting groove 110 can evenly distribute the local stress generated during the riveting process to the inner wall of the mounting groove 110 and the boss 112, thereby reducing stress concentration.

[0054] During the actual riveting process, the local stress of material expansion between the pole post 3 and the top cover body 2 will be dispersed through the contact surface between the boss 112 and the recessed groove 122 and the contact surface between the inner wall of the mounting groove 110 and the riveting block 12. This not only ensures that the riveting block 12 will not loosen or shift during the riveting process, but also further reduces the stress concentration on the surface of the first insulating component 11, avoiding cracks or ruptures caused by excessive stress.

[0055] In some embodiments, such as Figures 1 to 4As shown, the bottom and / or wall of the mounting groove 110 are provided with a boss 112, and the corresponding position on the rivet block 12 is provided with a recessed groove 122 that matches the boss 112.

[0056] Specifically, when a boss 112 is provided at the bottom of the mounting groove 110, a corresponding recessed groove 122 is provided on the bottom surface of the riveting block 12. This allows the stress at the bottom to be distributed to the boss 112 and the recessed groove 122 provided at the bottom.

[0057] When a boss 112 is provided on the wall of the mounting groove 110, a corresponding recessed groove 122 is provided on the side of the riveting block 12. This can distribute the stress on the side to the boss 112 and the recessed groove 122 provided on the side.

[0058] When bosses 112 are provided on both the bottom and wall of the mounting groove 110, recessed grooves 122 are provided on both the bottom and side surfaces of the riveting block 12. The bosses 112, by interlocking with the recessed grooves 122 on the riveting block 12, not only ensure that the riveting block 12 is stably fixed in the mounting groove 110, preventing displacement or loosening during the riveting process, but also disperse the local stress generated during the riveting process from different directions, ensuring that the stress is evenly distributed over a larger contact area.

[0059] Under normal circumstances, such as Figures 2 to 4 As shown, the boss 112 is a strip-shaped boss, and the recessed groove 122 is a strip-shaped recessed groove adapted to the strip-shaped boss. The strip-shaped boss and the strip-shaped recessed groove provide a larger contact area, enhancing the mechanical connection strength between the riveting block 12 and the mounting groove 110. The strip shape allows for multi-point fixing, ensuring that the riveting block 12 is stably fixed within the mounting groove 110, preventing displacement or loosening during riveting. At the same time, the strip-shaped boss and the strip-shaped recessed groove can evenly distribute the local stress generated during riveting across the entire strip-shaped contact surface, avoiding stress concentration at a single point. Through the stress dispersion of the long strip shape, the possibility of cracks or breakage of the first insulating component 11 due to stress concentration is significantly reduced, thereby ensuring the long-term reliability of its insulation performance.

[0060] In some embodiments, such as Figure 3 and Figure 4 As shown, the bottom and / or wall of the mounting groove 110 are provided with a plurality of strip-shaped protrusions extending along the first direction and / or the second direction, and the corresponding position of the rivet block 12 is provided with a plurality of strip-shaped recessed grooves extending along the first direction and / or the second direction, the first direction being perpendicular to the second direction.

[0061] It should be noted that the extension directions of the strip-shaped boss and the strip-shaped recess can be adjusted as needed. The first direction is the length direction of the riveting block 12 (or the length direction of the first insulating member 11), and the second direction is the width direction of the riveting block 12 (or the width direction of the first insulating member 11). Generally, the strip-shaped boss can extend along the first direction, the second direction, or both simultaneously. Similarly, the strip-shaped recess can extend along the first direction, the second direction, or both simultaneously.

[0062] In this embodiment, the bottom of the mounting groove 110 is provided with multiple strip-shaped protrusions spaced apart along a first direction, and the bottom of the mounting groove 110 is also provided with strip-shaped protrusions spaced along a second direction. The groove wall of the mounting groove 110 is provided with strip-shaped protrusions spaced circumferentially along its inner wall. Correspondingly, the bottom surface of the riveting block 12 is provided with multiple strip-shaped recessed grooves spaced apart along the first direction, and the bottom surface of the riveting block 12 is also provided with strip-shaped recessed grooves spaced along the second direction. The circumferentially arranged strip-shaped recessed grooves are provided around the riveting block 12. The cooperation of multiple strip-shaped protrusions and multiple strip-shaped recessed grooves provides more contact points, enhances the stability of the connection, and prevents the riveting block 12 from shifting or loosening during the riveting process. The strip-shaped protrusions are arranged in different directions, which can evenly distribute the local stress generated during the riveting process to the contact surface in multiple directions, avoiding stress concentration at a certain point. Through multi-directional stress dispersion, the possibility of cracks or ruptures in the first insulating component 11 due to stress concentration is significantly reduced, thereby ensuring the reliability of the riveting structure 1.

[0063] This application embodiment also provides a battery top cover assembly, which is as follows: Figures 5 to 7 As shown, it includes a top cover body 2, a riveting structure 1, and a pole post 3. The top cover body 2 has a pole post hole 21. Figures 1 to 4 As shown, the riveting structure 1 includes a first insulating member 11 and a riveting block 12. The first insulating member 11 is used to be disposed on the top cover body 2, and a first through hole 111 is formed at the position corresponding to the pole hole 21 for the pole 3 to pass through. The first insulating member 11 has a boss 112. The riveting block 12 has a second through hole 121 at the position corresponding to the pole hole 21 for the pole 3 to pass through. A recessed groove 122 suitable for inserting the boss 112 is formed on the riveting block 12. The recessed groove 122 and the boss 112 are inserted and engaged to fix the riveting block 12 to the first insulating member 11.

[0064] In this embodiment, the pole post 3 passes through and is fixed in the pole post hole 21, the first through hole 111, and the second through hole 121 in sequence. The riveting structure 1 firmly fixes the pole post 3 to the top cover body 2, ensuring the stability of the mechanical connection between the pole post 3 and the top cover body 2. The first insulating member 11 is engaged with the recessed groove 122 of the riveting block 12 through the boss 112, which can ensure that the first insulating member 11 will not be displaced or loosened during the riveting process.

[0065] During the riveting process, the localized stress caused by the expansion between the pole post 3 and the top cover body 2 is evenly distributed through the contact surface between the boss 112 and the recessed groove 122, preventing stress concentration on the surface of the first insulating component 11. By dispersing the stress, the possibility of the first insulating component 11 cracking or breaking due to excessive stress is significantly reduced, thereby improving the reliability of the entire battery top cover assembly.

[0066] The battery top cover assembly provided by this utility model, through the insertion and cooperation of the boss 112 of the first insulating member 11 and the recessed groove 122 of the riveting block 12, enables the first insulating member 11 to form a stable mechanical connection interface with the riveting block 12. This can evenly distribute the local expansion stress generated during the riveting process to the contact surface of the boss 112 and the recessed groove 122, significantly reducing the stress concentration on the surface of the first insulating member 11, thereby avoiding cracks or breakage caused by excessive stress and improving the reliability of the entire battery top cover assembly.

[0067] In some embodiments, such as Figures 5 to 7 As shown, the riveting structure 1 is disposed on the first side of the top cover body 2; the battery top cover assembly also includes: a second insulating member 4. The second insulating member 4 is disposed on the second side of the top cover body 2 and forms a third through hole 43 corresponding to the terminal hole 21. The terminal 3 passes through and is fixed in the third through hole 43, the terminal hole 21, the first through hole 111 and the second through hole 121 in sequence.

[0068] In this embodiment, the first insulating member 11 and the second insulating member 4 serve as the upper and lower plastic components of the battery top cover assembly, respectively. The first insulating member 11 provides insulation between the upper part of the terminal post 3 and the top cover body 2, while the second insulating member 4 provides an additional insulating layer, ensuring insulation performance between the lower part of the terminal post 3 and the top cover body 2. Simultaneously, a third insulating member 5, employing a sealing ring, is provided between the terminal post 3 and the inner wall of the terminal post hole 21 to ensure insulation performance between the middle part of the terminal post 3 and the top cover body 2.

[0069] In some embodiments, such as Figure 7 As shown, one of the second insulating member 4 and the second side of the top cover body 2 is provided with a protrusion 42, and the other is provided with a groove 23 suitable for the protrusion 42 to be inserted. The protrusion 42 and the groove 23 are inserted and engaged to make the second insulating member 4 disposed on the top cover body 2.

[0070] Specifically, the second insulating member 4 has multiple protrusions 42, and the top cover body 2 has multiple corresponding grooves 23. The interlocking fit between the protrusions 42 and the grooves 23 effectively prevents the second insulating member 4 from shifting or loosening on the top cover body 2, ensuring the stability of the pole 3. The cooperation of multiple protrusions 42 and grooves 23 provides multi-point fixation, ensuring the stability and firmness of the second insulating member 4 on the top cover body 2.

[0071] In some embodiments, such as Figure 5 and Figure 7 As shown, a liquid injection hole 22 is formed on the top cover body 2, penetrating the top cover body 2, and a connecting groove 41 is formed on the second insulating member 4 opposite to the liquid injection hole 22, and a connecting hole is provided in the connecting groove 41.

[0072] In this embodiment, the injection hole 22 is used to inject electrolyte during battery manufacturing. A connecting groove 41 is disposed on the insulating component and is opposite to the injection hole 22. Connecting holes are disposed on the side or bottom surface of the connecting groove 41, communicating with the injection hole 22 and other components within the battery. These connecting holes primarily prevent the injected electrolyte from directly entering the influencing electrode assembly, while allowing the electrolyte to be smoothly injected into the battery during the injection process. Generally, the connecting groove 41 has multiple connecting holes to facilitate rapid electrolyte injection.

[0073] This application also provides a battery, which includes: a housing, an electrode assembly, and a battery top cover assembly. The electrode assembly is located inside the housing, and the battery top cover assembly is fixed to an opening in the housing. The battery top cover assembly is as follows... Figures 5 to 7 As shown, it includes a top cover body 2, a riveting structure 1, and a pole post 3. The top cover body 2 has a pole post hole 21. Figures 1 to 4 As shown, the riveting structure 1 includes a first insulating member 11 and a riveting block 12. The first insulating member 11 is mounted on the top cover body 2, and a first through hole 111 is formed at a position corresponding to the pole hole 21 for the pole 3 to pass through. The first insulating member 11 also has a boss 112. The riveting block 12 has a second through hole 121 at a position corresponding to the pole hole 21 for the pole 3 to pass through. The riveting block 12 has a recessed groove 122 suitable for inserting the boss 112. The recessed groove 122 and the boss 112 are inserted and engaged to fix the riveting block 12 to the first insulating member 11. The pole 3 passes through and is fixed in the pole hole 21, the first through hole 111, and the second through hole 121 in sequence.

[0074] During the riveting process of the battery top cover assembly, the localized stress caused by the expansion joint between the terminal post 3 and the top cover body 2 is evenly distributed through the contact surface between the boss 112 and the recessed groove 122, preventing stress concentration on the surface of the first insulating component 11. By dispersing the stress, the possibility of cracks or breakage of the first insulating component 11 due to excessive stress is significantly reduced, thereby improving the reliability of the entire battery top cover assembly.

[0075] The battery provided by this utility model, due to the presence of the aforementioned battery top cover assembly, enables the first insulating member 11 to form a stable mechanical connection interface with the riveting block 12, which can evenly distribute the localized material expansion stress generated during the riveting process to the contact surface of the boss 112 and the recessed groove 122, significantly reducing the stress concentration on the surface of the first insulating member 11, thereby avoiding cracks or ruptures caused by excessive stress and improving the reliability of the battery top cover assembly in the battery.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A riveting structure (1), characterized in that, Applied to a battery top cover assembly including a top cover body (2) and a terminal post (3), wherein a terminal post hole (21) is formed on the top cover body (2) for the terminal post (3) to pass through. The riveting structure (1) includes: The first insulating member (11) is provided on the top cover body (2), and a first through hole (111) is formed at the position corresponding to the pole hole (21) for the pole (3) to pass through. A boss (112) is formed on the surface of the first insulating member (11) away from the top cover body (2). The riveting block (12) has a second through hole (121) at the position corresponding to the pole hole (21) for the pole (3) to pass through. The surface of the riveting block (12) near the top cover body (2) has a recessed groove (122) suitable for inserting the boss (112). The recessed groove (122) is inserted into the boss (112).

2. The riveting structure (1) according to claim 1, characterized in that, The first insulating member (11) has a mounting groove (110) formed on the side away from the top cover body (2). The boss (112) is disposed in the mounting groove (110). The rivet block (12) is embedded in the mounting groove (110) and fixed in the mounting groove (110) by the recess (122) and the boss (112).

3. The riveting structure (1) according to claim 2, characterized in that, The mounting groove (110) has a boss (112) at the bottom and / or wall, and the rivet block (12) has a recessed groove (122) at a corresponding position that is adapted to the boss (112).

4. The riveting structure (1) according to claim 3, characterized in that, The boss (112) is a strip-shaped boss (112), and the recess (122) is a strip-shaped recess (122) adapted to the strip-shaped boss (112).

5. The riveting structure (1) according to claim 4, characterized in that, The bottom of the mounting groove (110) and / or the groove wall are provided with a plurality of strip-shaped protrusions (112) extending along the first direction and / or the second direction, and the riveting block (12) is provided with a plurality of strip-shaped recessed grooves (122) extending along the first direction and / or the second direction at the corresponding positions. Wherein, the first direction is perpendicular to the second direction.

6. A battery top cover assembly, characterized in that, include: The top cover body (2) has a pole hole (21); The riveting structure (1) as described in any one of claims 1-5; The pole post (3) passes through and is fixed in the pole post hole (21), the first through hole (111) and the second through hole (121) in sequence.

7. The battery top cover assembly according to claim 6, characterized in that, The riveting structure (1) is provided on the first side of the top cover body (2); The battery top cover assembly also includes: The second insulating element (4) is disposed on the second side of the top cover body (2) and has a third through hole (43) corresponding to the pole hole (21). The pole (3) passes through and is fixed in the third through hole (43), the pole hole (21), the first through hole (111) and the second through hole (121) in sequence.

8. The battery top cover assembly according to claim 7, characterized in that, One of the second insulating member (4) and the second side of the top cover body (2) is provided with a protrusion (42), and the other is provided with a groove (23) suitable for the protrusion (42) to be inserted. The protrusion (42) and the groove (23) are inserted and engaged to allow the second insulating member (4) to be disposed on the top cover body (2).

9. The battery top cover assembly according to claim 7, characterized in that, The top cover body (2) has a liquid injection hole (22) that penetrates the top cover body (2), and the second insulating member (4) has a connecting groove (41) opposite to the liquid injection hole (22), and the connecting groove (41) has a connecting hole.

10. A battery, characterized in that, include: The battery housing, the electrode assembly, and the battery top cover assembly as described in any one of claims 6-9, wherein the electrode assembly is located within the housing and the battery top cover assembly is fixed to an opening in the housing.

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