Battery cell cover plate riveting jig

Abstract

The utility model provides a kind of electric core cover plate riveting jig, for positioning to electric core cover plate, for rivet pressure forming.Electric core cover plate riveting jig includes base, stopper and positioning top block.Base is equipped with the material groove for placing material and the positioning slot for positioning, and the through groove is equipped with through groove in the material groove, and first recess is further equipped with the downward recess in the material groove, and first recess separates material groove into two areas.Stopper is placed in positioning slot and covers on the electric core cover plate in material groove, and positioning hole is equipped with in the alignment rivet pressure position on stopper, rivet pressure position is rivet pressed by positioning hole.The positioning top block is installed in through groove to support the rivet pressure position on electric core cover plate.The electric core cover plate riveting jig of the utility model can be suitable for the rivet pressure of small size electric core cover plate, and positioning effect is good, and rivet pressure effect is good.

Description

Technical Field

[0001] This utility model relates to the field of battery cell manufacturing technology, and in particular to a battery cell cover plate riveting fixture. Background Technology

[0002] The battery cell is the core component of a battery, a basic unit system capable of directly converting chemical energy into electrical energy. In the production and processing of prismatic battery cell casings, the positive and negative terminals on the cell top cover or casing are primarily manufactured using riveting. Specifically, the outer electrode sheet + terminal / riveting post + outer insulation + cover plate / casing + inner insulation + inner electrode sheet are riveted together during the molding process. Generally, these batteries are relatively large in size and volume. The design of the riveting fixture can be tailored to the product characteristics, allowing for a relatively simple structural design. Typically, after placing all components in a mold, the riveting rod is pressed down to rivet the corresponding parts together. The compression of the inner and outer insulation components has been experimentally verified to meet the standard requirement of 30% compression. However, the compression ratio of the inner and outer insulation is often random and cannot be precisely controlled.

[0003] As people increasingly pursue thinner and lighter devices, battery products are becoming smaller and smaller. With such a reduction in product size, the corresponding cover dimensions also decrease. Small-sized covers require significantly higher standards in terms of structural design and dimensional accuracy. Current commercially available riveting machines, based on preliminary verification, directly rivet, resulting in excessive compression of the outer insulation component while insufficient compression of the inner insulation component. This easily leads to cracking of the outer insulation component. Existing riveting fixtures are also difficult to apply to small battery cell cover products, resulting in poor riveting performance.

[0004] Therefore, it is necessary to provide a riveting fixture for battery cell covers that is suitable for riveting small-sized battery cell covers and has a good riveting effect. Utility Model Content

[0005] The purpose of this utility model is to provide a riveting fixture for battery cell cover plates that is suitable for riveting small-sized battery cell cover plates and has a good riveting effect.

[0006] To achieve the above objectives, this utility model provides a cell cover riveting fixture for positioning the cell cover for riveting and forming, comprising: The base has a material trough for feeding materials and a positioning trough for positioning. A through groove is formed in the material trough, and a first recessed groove is also formed in the material trough, which divides the material trough into two areas. A stop block is placed in the positioning groove and covers the cell cover plate in the material trough. The stop block has a positioning hole for aligning the riveting position, and the riveting position is riveted by means of the positioning hole. The positioning top block is installed in the through slot to support the riveting position on the cell cover plate.

[0007] With the above technical solution, the cell cover riveting fixture of this utility model includes a base, a stop block, and a positioning top block. The base has a material groove for feeding material and a positioning groove for positioning. A through groove is formed in the material groove for installing the positioning top block. A first recessed groove is also formed in the material groove, dividing the material groove into two areas. This effectively prevents the entire cell cover from directly and rigidly contacting the material groove during riveting, thereby releasing stress and effectively protecting the entire cell cover. The stop block is placed in the positioning groove and covers the cell cover in the material groove. The stop block has positioning holes aligned with the riveting positions on the cell cover, allowing for riveting at the riveting positions. The stop block covers the cell cover to protect and position the entire cell cover. The positioning holes on the stop block are aligned with the riveting positions on the cell cover, allowing the riveting mechanism to accurately rivet the positions. The positioning top block is installed in the through groove to support the riveting position on the battery cell cover and to position the rivets, or the rivets can be positioned through the through groove of the base to improve the riveting effect. The battery cell cover riveting fixture of this utility model is suitable for riveting small-sized battery cell covers, and has good positioning and riveting effects.

[0008] Preferably, the positioning top block is slidably installed in the through groove, and a limiting block for supporting the positioning top block is provided in the base, with the limiting block located below the positioning top block.

[0009] Preferably, an adjusting member is provided inside the limiting block, and the adjusting member abuts against the positioning top block. By adjusting the adjusting member, the position of the positioning top block in the through groove can be adjusted so as to adjust the support position of the cell cover plate.

[0010] Preferably, the positioning top block has a limiting groove adapted to the riveting position, the riveting position is located in the limiting groove and the limiting groove is used to position the riveting position.

[0011] Preferably, the locating top block is flat and the surface for supporting the riveting position is flat; the side of the through groove near the riveting position is provided with a limiting part for positioning the riveting position, and the riveting position is positioned from both sides by the limiting part.

[0012] Preferably, the through groove includes two long sides and two short sides arranged opposite to each other, with the two long sides abutting against the riveting position for positioning, and a gap left between the two short sides and the riveting position; or the two short sides abutting against the riveting position for positioning, and a gap left between the two long sides and the riveting position.

[0013] Preferably, a first positioning part is provided in the positioning groove, and a second positioning part is provided on the stop block. The first positioning part and the second positioning part cooperate to install the stop block in the positioning groove at a preset position and align the positioning hole with the riveting position of the cell cover plate.

[0014] Preferably, the first positioning part is a hole and the second positioning part is a positioning post; or the first positioning part is a positioning post and the second positioning part is a hole.

[0015] Preferably, a first mounting groove is provided in the positioning groove, and a first magnetic component for adsorption and positioning is installed in the first mounting groove.

[0016] Preferably, a second mounting groove is provided on the surface of the block that mates with the base, and a second magnetic component for adsorption and positioning is installed in the second mounting groove. The second magnetic component mates with the first magnetic component to allow the base to adsorb the block. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments 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 based on these drawings without creative effort.

[0018] Figure 1 This is a structural diagram of a cell cover riveting fixture provided in one embodiment of the present invention.

[0019] Figure 2 yes Figure 1 A cross-sectional view at an angle.

[0020] Figure 3 yes Figure 1 The structure explodes diagram.

[0021] Figure 4 yes Figure 1 The structural diagram with the riveting mechanism removed.

[0022] Figure 5 yes Figure 4 The structural diagram with the positioning pressure plate removed.

[0023] Figure 6 yes Figure 5 The structural diagram with the stop blocks removed.

[0024] Figure 7 yes Figure 6 The structural diagram with the battery cell cover removed.

[0025] Figure 8 yes Figure 7 Enlarged view of point A in the middle.

[0026] Figure 9 yes Figure 6 A structural diagram of another embodiment.

[0027] Figure 10 yes Figure 9 Enlarged view of point B in the middle.

[0028] Figure 11 yes Figure 3 Structural diagram of the middle stop block.

[0029] Figure 12 yes Figure 3 A structural diagram of the positioning top block provided in one embodiment.

[0030] Figure 13 yes Figure 3 A structural diagram of the positioning top block provided in another embodiment.

[0031] Figure 14 yes Figure 3 Structural diagram of the center positioning pressure plate.

[0032] Figure 15 This is a structural diagram of a battery cell cover plate provided in one embodiment of the present invention.

[0033] Explanation of reference numerals in the attached figures: 100. Riveting fixture for battery cell cover plates; 10. Base; 11. Material trough; 111. Arc-shaped groove; 12. Positioning groove; 13. Through groove; 131. Limiting part; 14. First groove; 15. First mounting groove; 16. First magnetic component; 17. First positioning part; 20. Stop; 21. Positioning hole; 22. Second positioning part; 23. Second groove; 24. Second mounting groove; 25. Second magnetic component; 30. Positioning top block; 31. Limiting groove; 32. Top abutment; 33. Supporting surface; 40. Positioning plate; 41. Forming hole; 42. Positioning protrusion; 43. Adjustment hole; 50. Riveting mechanism; 60. Adjusting components; 70. Limit block; 80. Cell cover plate; 81. Riveting position. Detailed Implementation

[0034] To explain the technical content and structural features of this utility model in detail, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0035] Please see Figures 1 to 3This utility model provides a cell cover riveting fixture 100 for positioning a cell cover 80 so that the cell cover 80 can be riveted and formed by a riveting mechanism 50. The cell cover riveting fixture 100 includes a base 10, a stop block 20, and a positioning top block 30. The base 10 has a material groove 11 for placing material, and the cell cover 80 to be riveted is placed in the material groove 11. The periphery of the material groove 11 has an arc-shaped groove 111 for easy material handling. A through groove 13 is provided through the material groove 11 for installing the positioning top block 30 so that the positioning top block 30 supports the riveting position 81 from the bottom. The material trough 11 also has a downwardly recessed first groove 14, which divides the material trough 11 into two areas. The first groove 14 effectively prevents the entire cell cover plate 80 from directly and rigidly contacting the material trough 11 during riveting, thus releasing stress and effectively protecting the entire cell cover plate 80. The base 10 also has a positioning groove 12 for mounting a stop block 20. The stop block 20 is placed in the positioning groove 12 and covers the cell cover plate 80 in the material trough 11. The stop block 20 has a positioning hole 21 for aligning with the riveting position 81, allowing for riveting of the riveting position 81. On the other hand, a positioning top block 30 is installed in the through groove 13 to support the riveting position 81 on the cell cover plate 80, and the height of the support can be adjusted for better riveting results.

[0036] With the above technical solution, the cell cover riveting fixture 100 of this utility model includes a base 10, a stop block 20, and a positioning top block 30. The base 10 has a material groove 11 for feeding material and a positioning groove 12 for positioning. A through groove 13 is formed in the material groove 11, which is used to install the positioning top block 30. The material groove 11 also has a downwardly recessed first groove 14, which divides the material groove 11 into two areas. During riveting, the entire cell cover 80 can be effectively prevented from directly and rigidly contacting the material groove 11, thereby releasing stress during riveting and effectively protecting the entire cell cover 80. The stop block 20 is placed in the positioning groove 12 and covers the cell cover 80 in the material groove 11. The stop block 20 has a positioning hole 21 that aligns with the riveting position 81 of the cell cover 80, and the riveting position 81 is riveted through the positioning hole 21. A stop block 20 covers the cell cover plate 80 to protect and position the entire cell cover plate 80. A positioning hole 21 is provided on the stop block 20, which is aligned with the riveting position 81 on the cell cover plate 80 that needs to be riveted. The positioning hole 21 allows the riveting mechanism 50 to precisely rivet the riveting position 81. A positioning top block 30 is installed in the through groove 13 to support the riveting position 81 on the cell cover plate 80 and to position the rivet. Alternatively, the rivet can be positioned through the through groove 13 of the base 10 to improve the riveting effect. The cell cover plate riveting fixture 100 of this invention is suitable for riveting small-sized cell cover plates 80, and provides good positioning and riveting effects.

[0037] Please see Figure 2 , Figure 3 and Figure 12 and Figure 13 In some optional embodiments, the positioning top block 30 is slidably mounted in the through groove 13, and a limiting block 70 for supporting the positioning top block 30 is provided in the base 10. The limiting block 70 is located below the positioning top block 30 to position the positioning top block 30 in the through groove 13. On the other hand, an adjusting member 60 is also provided in the limiting block 70. The adjusting member 60 abuts against the abutment top 32 of the positioning top block 30 and can be threadedly connected to the limiting block 70. By adjusting the adjusting member 60, the position of the positioning top block 30 in the through groove 13 can be adjusted to adjust the support position of the cell cover plate 80. By adjusting the adjusting member 60, the riveting position 81 of the cell cover plate 80 can be better supported, so that the cell cover plate 80 can be riveted better.

[0038] like Figure 12As shown, in some optional embodiments, the positioning top block 30 has a limiting groove 31 adapted to the riveting position 81. The sides of the cell cover 80 are provided with rivets, inner insulating components, outer insulating components, and hardware gaskets, etc., and multiple components are riveted into a single structure. The riveting position 81 located below the cell cover 80 is located within the limiting groove 31 and is positioned and supported by the limiting groove 31, thereby enabling precise positioning of the cell cover 80 and improving the riveting effect.

[0039] like Figure 10 , Figure 13 and Figure 15 As shown, in some alternative embodiments, the surface of the positioning top block 30 used to support the riveting position 81 is a flat support surface 33, which is more convenient to form, reduces the processing difficulty, and can support the bottom riveting surface from the through groove 13, ensuring that the support surface 33 and the riveting surface are in flat contact without tilting. At the same time, a limiting part 131 for positioning the riveting position 81 is provided on the side of the through groove 13 near the riveting position 81, and the riveting position 81 is positioned from both sides by the limiting part 131. The base 10 simultaneously restricts the rivets and inner insulating parts of the product, and together with the stop block 20, it completes the limiting of the rivets, inner insulating parts, and top cover. Specifically, the through groove 13 includes two long sides and two short sides arranged opposite each other. The two long sides are parallel to each other, and the two short sides are also parallel to each other. The two long sides abut against the riveting position 81 for positioning, and a gap is left between the two short sides and the riveting position 81 to allow deformation release. Alternatively, the two short sides abut against the riveting position 81 for positioning, with a gap between the two long sides and the riveting position 81. In another embodiment, the positioning top block 30 limits the four sides of the rivet through the limiting groove 31. In this embodiment, the through groove 13 of the base 10 only limits two sides, which can increase the space for deformation release after compression of the inner insulating part after riveting, thereby reducing the proportion of cracks caused by uneven deformation stress during riveting, and the overall riveting forming effect is better. In some embodiments, the rivet is limited and fixed by the limiting groove 31 of the positioning top block 30, but its limiting boundary is only about 0.25mm, which is very small and difficult to process. At the same time, the flatness of its middle part is difficult to guarantee due to size limitations. The actual processed flatness is greater than 0.05, which leads to the product flatness being greater than 0.05 during riveting and damage to the edge of the rivet limiting plane. In this embodiment, the positioning top block 30 has a flat support surface 33, which is convenient for processing and can better guarantee the flatness of the plane. In addition, the two sides of the through groove 13 of the base 10 limit the riveting position 81, which increases the space for deformation release after riveting and results in a better overall forming effect.

[0040] Please see Figures 4 to 7 and Figure 11In some optional embodiments, a first positioning part 17 is provided in the positioning groove 12, and a second positioning part 22 is provided on the stop 20. The first positioning part 17 and the second positioning part 22 cooperate to install the stop 20 in the positioning groove 12 at a preset position, and the positioning hole 21 is aligned with the riveting position 81 of the cell cover plate 80. For example, the first positioning part 17 can be a hole, and the second positioning part 22 can be a positioning post. Or the first positioning part 17 can be a positioning post, and the second positioning part 22 can be a hole. As long as the first positioning part 17 and the second positioning part 22 cooperate to make the stop 20 and the base 10 fit precisely, and the positioning hole 21 can be aligned with the riveting position 81, it is acceptable.

[0041] Please see Figures 2 to 7 and Figure 11 In some optional embodiments, a first mounting groove 15 is formed within the positioning groove 12, and a first magnetic element 16 for adsorption and positioning is installed within the first mounting groove 15. On the other hand, a second mounting groove 24 is formed on the surface where the stop block 20 mates with the base 10, and a second magnetic element 25 for adsorption and positioning is installed within the second mounting groove 24. The second magnetic element 25 cooperates with the first magnetic element 16 to allow the base 10 to adsorb the stop block 20. The mutual adsorption between the first magnetic element 16 and the second magnetic element 25 can reinforce the installation of the stop block 20 on the base 10.

[0042] Please see Figures 1 to 4 and Figure 14 In some optional embodiments, a positioning plate 40 is also included. The positioning plate 40 is movably disposed above the base 10. The positioning plate 40 has a forming hole 41 for riveting. The positioning plate 40 presses against the stop block 20 and aligns the forming hole 41 with the positioning hole 21. A positioning protrusion 42 is provided on the positioning plate 40, and a second groove 23 is recessed on the stop block 20. The positioning protrusion 42 can pre-compress the top cover and the inner insulating component within the second groove 23, aligning the forming hole 41 with the positioning hole 21. The installation position of the positioning plate 40 can also be adjusted via the adjustment hole 43. Specifically, the final compression of the inner insulating component is achieved by the pressure applied by the equipment's clamping claws during the riveting process, while the compression of the outer insulating component is achieved by the equipment's riveting mechanism 50 after riveting the rivets.

[0043] like Figures 1 to 15As shown, the cell cover riveting fixture 100 of this utility model includes a base 10, a stop block 20, a positioning top block 30, an adjusting component 60, a limiting block 70, a positioning pressure plate 40, and a riveting mechanism 50. The base 10 has a material groove 11 for feeding material and a positioning groove 12 for positioning. A through groove 13 is formed in the material groove 11, which is used to install the positioning top block 30. A first recessed groove 14 is also formed in the material groove 11, dividing the material groove 11 into two areas. This effectively prevents the entire cell cover 80 from directly and rigidly contacting the material groove 11 during riveting, thereby releasing stress during riveting and effectively protecting the entire cell cover 80. The stop block 20 is placed in the positioning groove 12 and covers the cell cover plate 80 in the material trough 11. The stop block 20 has a positioning hole 21 that aligns with the riveting position 81 on the cell cover plate 80, and the riveting position 81 is riveted through the positioning hole 21. The stop block 20 covers the cell cover plate 80 to protect and position the entire cell cover plate 80. The positioning hole 21 on the stop block 20 is aligned with the riveting position 81 on the cell cover plate 80 that needs to be riveted and fixed. The riveting mechanism 50 can accurately rivet the riveting position 81 through the positioning hole 21. The positioning top block 30 is installed in the through groove 13 to support the riveting position 81 on the cell cover plate 80 and to position the rivet. Alternatively, the rivet can be positioned through the through groove 13 of the base 10 to improve the riveting effect. Simultaneously, the position of the positioning top block 30 can be adjusted by the adjusting component 60 and the limiting block 70, so that the positioning top block 30 can better support the battery cell cover plate 80. Then, the positioning pressure plate 40 presses on the stop block 20, and the riveting mechanism 50 rivets the shape. The battery cell cover plate riveting fixture 100 of this utility model is suitable for riveting small-sized battery cell cover plates 80, and has good positioning and riveting effects.

[0044] The above-disclosed examples are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall fall within the scope of the present utility model.

Claims

1. A cell cover riveting fixture for positioning cell covers for riveting and forming, characterized in that, include: The base has a material trough for feeding materials and a positioning trough for positioning. A through groove is formed in the material trough, and a first recessed groove is also formed in the material trough, which divides the material trough into two areas. A stop block is placed in the positioning groove and covers the cell cover plate in the material trough. The stop block has a positioning hole for aligning the riveting position, and the riveting position is riveted by means of the positioning hole. A positioning top block is installed in the through groove to support the riveting position on the cell cover plate.

2. The cell cover riveting fixture according to claim 1, characterized in that, The positioning top block is slidably installed in the through groove, and the base is provided with a limiting block for supporting the positioning top block, the limiting block being located below the positioning top block.

3. The cell cover riveting fixture according to claim 2, characterized in that, An adjusting member is provided inside the limiting block. The adjusting member abuts against the positioning top block. By adjusting the adjusting member, the position of the positioning top block in the through groove can be adjusted so as to adjust the support position of the battery cell cover plate.

4. The cell cover riveting fixture according to claim 1, characterized in that, The positioning top block has a limiting groove adapted to the riveting position. The riveting position is located in the limiting groove and is positioned by the limiting groove.

5. The cell cover riveting fixture according to claim 1, characterized in that, The positioning top block is used to support the flat surface of the riveting position; the through groove is provided with a limiting part for positioning the riveting position on the side near the riveting position, and the riveting position is positioned from both sides by the limiting part.

6. The cell cover riveting fixture according to claim 5, characterized in that, The through groove includes two long sides and two short sides arranged opposite to each other. The two long sides are positioned against the riveting position, and a gap is left between the two short sides and the riveting position; or the two short sides are positioned against the riveting position, and a gap is left between the two long sides and the riveting position.

7. The cell cover riveting fixture according to claim 1, characterized in that, A first positioning part is provided in the positioning groove, and a second positioning part is provided on the stop block. The first positioning part and the second positioning part cooperate to install the stop block in the positioning groove at a preset position and align the positioning hole with the riveting position of the battery cell cover plate.

8. The cell cover riveting fixture according to claim 7, characterized in that, The first positioning part is a hole, and the second positioning part is a positioning post; or the first positioning part is a positioning post, and the second positioning part is a hole.

9. The cell cover riveting fixture according to claim 1, characterized in that, The positioning groove has a first mounting groove, and a first magnetic component for adsorption and positioning is installed in the first mounting groove.

10. The cell cover riveting fixture according to claim 9, characterized in that, A second mounting groove is provided on the surface of the stop block that mates with the base. A second magnetic component for adsorption and positioning is installed in the second mounting groove. The second magnetic component mates with the first magnetic component to allow the base to adsorb the stop block.

Images