Top cover sheet and battery cover plate facilitating riveting

Abstract

The utility model relates to the technical fields of battery cover plate discloses top cover piece convenient to rivet and press, including sheet body, the sheet body is equipped with the pole hole that goes through up and down and is crossed for the pole, the top of sheet body has top face, the top face is protruding and is equipped with the flanging wall, the flanging wall is along the peripheral arrangement of pole hole; The flanging wall is enclosed and forms the enclosed area, and the enclosed area is located the top of pole hole; Flanging wall has the inwards wall towards the enclosed area, and the middle part of inwards wall is outwardly recessed, forms the recessed groove strip with inside opening, and the recessed groove strip extends the arrangement along the length direction of flanging wall; The lower part of flanging wall has fixed section, and fixed section is located the below of recessed groove strip, and the upper part of flanging wall has the bending section that is to be towards the bending of enclosed area, and bending section is located the above of recessed groove strip; Through setting recessed groove strip, guide flanging wall even deformation, reduce the risk of rupture, utilize fixed section and bending section optimization rivet and press stability and the degree of fit simultaneously, to improve battery cover plate assembly efficiency and quality.

Description

Technical Field

[0001] This utility model patent relates to the technical field of battery cover plates, specifically to a top cover plate and a battery cover plate that are easy to rivet. Background Technology

[0002] As a key component in the field of battery cover technology, the reliability of the connection between the top cover and the terminal post has a significant impact on the overall performance and safety of the battery.

[0003] However, with the miniaturization of batteries and the increasing complexity of assembly processes, the existing riveting technology for top cover sheets is gradually failing to meet current production needs.

[0004] During the riveting process, the top cover plate is not positioned accurately enough, and the flange wall lacks a guiding structure, making it difficult to accurately align the pole hole with the pole during assembly. This can easily lead to misalignment, causing great inconvenience to the riveting operation and affecting the overall assembly efficiency. Moreover, the flange wall is prone to uneven deformation during the riveting process, resulting in weak riveting, local stress concentration, and even cracking.

[0005] In addition, existing riveting processes often rely on additional tooling or molds to assist in riveting, which increases the complexity of production and operation, easily leads to an increase in the defect rate, thereby reducing assembly efficiency and lowering the overall production quality. Utility Model Content

[0006] The purpose of this invention is to provide a top cover that is easy to rivet, thereby solving the problem of inconvenient riveting of top cover in the prior art.

[0007] This utility model is implemented as follows: a top cover sheet that is easy to rivet includes a sheet body, wherein the sheet body has an electrode hole that runs vertically through the sheet body and allows the electrode to pass through, the top of the sheet body has a top surface, and a flange wall is protruding on the top surface. The flange wall is arranged around the outer periphery of the electrode hole; the flange wall encloses and forms an enclosing area, which is located above the electrode hole.

[0008] The flanged wall has an inward sidewall facing the enclosing area, the middle of which is recessed outward to form a groove strip with an inner opening, the groove strip extending along the length of the flanged wall; the lower part of the flanged wall has a fixed section located below the groove strip, and the upper part of the flanged wall has a bending section to be bent toward the enclosing area, the bending section located above the groove strip.

[0009] Furthermore, an annular plate for supporting the pole is provided below the enclosed area. The annular plate is arranged around the circumference of the flange wall, and the annular plate encloses to form the pole hole.

[0010] Furthermore, the thickness of the annular sheet is less than the thickness of the sheet body.

[0011] Furthermore, the width of the groove gradually increases along the direction from the inside to the outside.

[0012] Furthermore, the groove strip has a triangular cross-section, with an inner opening formed on the inner side of the groove strip and an outer tip formed on the outer side of the groove strip.

[0013] Furthermore, the groove strip is arranged in a closed loop around the circumference of the flange wall.

[0014] Furthermore, the inner sidewall is provided with a plurality of groove strips, which are arranged sequentially and at intervals around the circumference of the flange wall.

[0015] Furthermore, the bent segment has multiple upwardly open notch areas, which are spaced around the circumference of the bent segment and divide it into multiple broken segments. The groove strip is disposed below the broken segments.

[0016] Furthermore, the bent segment is square-shaped and has four notch areas, which divide the bent segment into four broken segments; the bent segment has four corners, which are arc-shaped and the notch areas are located at the corners and arc-shaped along the corners.

[0017] Compared with the prior art, the top cover plate provided by this utility model is easy to rivet. By setting a groove strip on the flange wall, it is easy for the flange wall to be flipped during the riveting process. It also provides accurate deformation guidance for the riveting process, ensuring that the flange wall can deform evenly and orderly. In addition, the groove strip makes the operation of the entire riveting process simple and convenient, thereby improving the efficiency of the overall assembly.

[0018] The clear division of labor between the fixed and bending sections ensures sufficient stability during riveting and facilitates adjustment of the fit, greatly reducing reliance on complex tooling and effectively lowering production costs and defect rates. This, in turn, improves the assembly efficiency and quality of the battery cover.

[0019] This utility model also provides a battery cover.

[0020] Compared with the prior art, the battery cover provided by this utility model adopts a top cover piece that is easy to rivet, which greatly improves the overall assembly performance. In particular, by cutting the bending section into multiple broken sections and using an arc transition at the corner, the flange wall can deform flexibly and evenly during riveting, without causing local cracks due to uneven stress. At the same time, the presence of the groove strip not only guides the deformation of the flange wall, but also plays a role in buffering and dispersing stress, making the entire structure more stable after riveting.

[0021] This improvement not only makes the assembly process easier and more efficient, but also enhances the sealing and durability of the battery cover. Especially in long-term use, it takes into account both the convenience of the production process and the reliability of the final product. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of the top cover sheet that is easy to rivet, provided by this utility model;

[0023] Figure 2 This is a cross-sectional schematic diagram of the top cover sheet provided by this utility model;

[0024] Figure 3 This utility model provides Figure 2 Enlarged view of the area marked A in the middle;

[0025] Figure 4 This is a schematic diagram of the deformation state of the flange wall during riveting provided by this utility model;

[0026] Figure 5 This is a top view of the flanged wall provided by this utility model;

[0027] In the figure: plate body 100, top surface 101, pole hole 102, annular plate 103;

[0028] 200, flanged wall, fixed section, bending section, enclosed area, gap area, disconnected section, corner position, etc.

[0029] The groove strip is 300, the inner opening is 301, and the outer tip is 302. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0031] The implementation of this utility model will be described in detail below with reference to specific embodiments.

[0032] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing 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, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0033] Reference Figure 1-5 The image shown is a preferred embodiment of the present invention.

[0034] The top cover plate, which is easy to rivet, includes a plate body 100. The plate body 100 has an electrode hole 102 that runs vertically through the plate body and allows the electrode to pass through. The top of the plate body 100 has a top surface 101. A flange wall 200 protrudes from the top surface 101 and is arranged around the outer periphery of the electrode hole 102. The flange wall 200 encloses and forms an enclosing area 203, which is located above the electrode hole 102.

[0035] The flange wall 200 has an inner sidewall facing the enclosing area 203. The middle part of the inner sidewall is recessed outward to form a groove strip 300 with an inner opening 301. The groove strip 300 extends along the length of the flange wall 200. The lower part of the flange wall 200 has a fixing section 201 located below the groove strip 300. The upper part of the flange wall 200 has a bending section 202 to be bent toward the enclosing area 203. The bending section 202 is located above the groove strip 300.

[0036] The top cover plate provided above for easy riveting, by providing a groove strip 300 on the flange wall 200, facilitates the flipping operation of the flange wall 200 during the riveting process, and also provides accurate deformation guidance for the riveting process, ensuring that the flange wall 200 can deform evenly and orderly. Furthermore, the groove strip 300 makes the overall riveting process simple and convenient, thereby improving the efficiency of the overall assembly.

[0037] The clear division of labor between the fixed section 201 and the bending section 202 ensures sufficient stability during riveting and facilitates adjustment of the fit, greatly reducing reliance on complex tooling and effectively lowering production costs and defect rates. This, in turn, improves the assembly efficiency and quality of the battery cover.

[0038] In this embodiment, an annular piece 103 for supporting the pole is provided below the enclosed area 203. The annular piece 103 is arranged around the circumference of the flange wall 200, and the annular piece 103 encloses to form the pole hole 102.

[0039] The annular piece 103 is arranged circumferentially along the flange wall 200, which can disperse the pressure during the riveting of the pole post, provide precise positioning and stable support for the pole post, reduce the risk of pole post insertion misalignment, and improve assembly efficiency and quality.

[0040] In this embodiment, the thickness of the annular sheet 103 is less than the thickness of the sheet body 100; thus, the thin and light annular sheet 103 has better elasticity during riveting, which can optimize the transmission of riveting pressure, ensure fit, and also facilitate material optimization and weight reduction.

[0041] In this embodiment, the width of the groove strip 300 gradually increases from the inside out along the direction of the groove strip 300; such a gradual change in width guides the stress to be concentrated on the inside and dispersed on the outside when the flange wall 200 is riveted, so as to achieve uniform deformation and avoid cracking or wrinkling.

[0042] In this embodiment, the cross-section of the groove strip 300 is triangular, and an inner opening 301 is formed on the inner side of the groove strip 300. The outer edges of the groove strip 300 converge to form an outer tip 302. In this way, the deformation direction is guided by the inner opening 301 and the deformation range is limited by the outer tip 302, so that the flange wall 200 can be easily bent and clamped when riveted, thereby ensuring that the deformation of the flange wall 200 is uniform and controllable and preventing cracking.

[0043] In this embodiment, the groove strip 300 is arranged in a closed loop around the circumference of the flange wall 200; such a closed loop groove strip 300 allows the flange wall 200 to be subjected to uniform force during riveting, thereby enhancing the overall structural stability and riveting quality.

[0044] In this embodiment, a plurality of groove strips 300 are provided on the inner sidewall, and the plurality of groove strips 300 are arranged sequentially and at intervals around the circumference of the flange wall 200.

[0045] This effectively distributes the stress during riveting, guides local deformation, avoids excessive local concentration, reduces the risk of local breakage, and improves structural reliability and assembly quality.

[0046] In this embodiment, the bent section 202 has a plurality of upwardly open notch areas 204, which are spaced around the circumference of the bent section 202. The plurality of notch areas 204 divide the bent section 202 into a plurality of broken sections 205, and the groove strip 300 is disposed below the broken sections 205.

[0047] The bending section 202 is divided into multiple disconnected sections 205 by the notch area 204, which improves the flexibility of the bending section 202. This allows the fitting angle to be adjusted individually during riveting, reducing reliance on complex tooling. At the same time, it can adapt to different pole specifications, thereby improving assembly efficiency and reducing the defect rate.

[0048] In this embodiment, the bent segment 202 is square in shape and has four notch areas 204, which divide the bent segment 202 into four broken segments 205. The bent segment 202 has four corner positions 206, which are curved in an arc shape. The notch areas 204 are provided on the corner positions 206 and are curved along the corner positions 206.

[0049] The bend 202 is square to fit the shape of the pole post, and the notch 204 at the corner 206 is curved along the arc, which optimizes the deformation path, ensures the fit between the bend 202 and the pole post after riveting, and improves the structural reliability and assembly quality.

[0050] This utility model also provides a battery cover.

[0051] The battery cover provided above uses a top cover piece that is easy to rivet, which greatly improves the overall assembly efficiency. In particular, by cutting the bending section 202 into multiple broken sections 205 and using an arc transition at the corner, the flange wall 200 can deform flexibly and evenly during riveting, without causing local cracks due to uneven stress. At the same time, the presence of the groove strip 300 not only guides the deformation of the flange wall 200, but also plays a role in buffering and dispersing stress, making the entire structure more stable after riveting.

[0052] This improvement not only makes the assembly process easier and more efficient, but also enhances the sealing and durability of the battery cover, especially in long-term use, taking into account both the convenience of the production process and the reliability of the final product.

[0053] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A top cover sheet that is easy to rivet, characterized in that, The device includes a sheet body, which has a through hole for the electrode post to pass through. The top of the sheet body has a top surface, and a flange wall is protruding from the top surface. The flange wall is arranged around the outer periphery of the electrode post hole. The flange wall encloses and forms an enclosed area, which is located above the electrode post hole. The flanged wall has an inward sidewall facing the enclosing area, the middle of which is recessed outward to form a groove strip with an inner opening, the groove strip extending along the length of the flanged wall; the lower part of the flanged wall has a fixed section located below the groove strip, and the upper part of the flanged wall has a bending section to be bent toward the enclosing area, the bending section located above the groove strip.

2. The top cover sheet for easy riveting as described in claim 1, characterized in that, Below the enclosed area is an annular plate for supporting the pole post. The annular plate is arranged around the circumference of the flange wall, and the annular plate encloses the pole post hole.

3. The top cover sheet for easy riveting as described in claim 2, characterized in that, The thickness of the annular sheet is less than the thickness of the sheet body.

4. The top cover sheet for easy riveting as described in claim 1, characterized in that, Along the direction from the inside out, the width of the groove gradually increases.

5. The top cover sheet for easy riveting as described in claim 1, characterized in that, The groove strip has a triangular cross-section, with an inner opening formed on the inner side and an outer tip formed on the outer side.

6. The top cover sheet for easy riveting as described in claim 1, characterized in that, The grooved strips are arranged in a closed loop around the circumference of the flanged wall.

7. The top cover sheet for easy riveting as described in claim 1, characterized in that, The inner sidewall is provided with a plurality of groove strips, which are arranged sequentially and at intervals around the circumference of the flange wall.

8. The top cover sheet for easy riveting as described in any one of claims 1-7, characterized in that, The bent section has multiple upwardly open notches, which are spaced around the circumference of the bent section and divide it into multiple broken sections. The groove strip is disposed below the broken sections.

9. The top cover sheet for easy riveting as described in claim 8, characterized in that, The bent section is square in shape and has four notch areas, which divide the bent section into four broken sections. The bent section has four corners, which are curved in an arc shape. The notch areas are located at the corners and are curved along the corners.

10. A battery cover, characterized in that, Includes the top cover sheet that is easy to rivet as described in claim 8.

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