Lithium battery tab bending abdicating device

Abstract

The utility model relates to the technical field of lithium battery manufacturing machinery, in particular to a lithium battery tab bending abdicating device, which comprises a rotary disk, a bending mechanism and a resetting mechanism, the rotary disk is used for bearing a plurality of lithium batteries to rotate, and a bending station corresponding to the lower part of the bending mechanism and a resetting station corresponding to the lower part of the resetting mechanism are arranged above the rotary disk; wherein the bending mechanism at least comprises a first pressing block capable of pushing the tab and the top cover of the lithium battery away from the edge of the lithium battery at a bending station and bending the tab and the top cover, and the resetting mechanism at least comprises a second pressing block capable of pushing the bent tab and the top cover of the lithium battery back to original positions at a resetting station; the tab and the top cover of the lithium battery are bent to a fixed abdicating angle through the bending mechanism, and the tab and the top cover are reset through the resetting mechanism, so that a gap between the tab and the inner wall of the lithium battery is enlarged, and residual battery liquid of the lithium battery can be conveniently cleaned.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery manufacturing machinery technology, specifically to a lithium battery tab bending and repositioning device. Background Technology

[0002] During the manufacturing process of lithium batteries, especially after the electrochemical reaction is complete, a certain amount of electrolyte may remain inside the battery. This residual electrolyte not only affects product quality but may also pose safety hazards for subsequent use and recycling. Current technology involves inserting a probe into the lithium battery cavity from the side furthest from the tabs to clean the residual electrolyte. However, due to the narrow gap between the tabs and the inner wall of the lithium battery, it is impossible to clean it completely. Incompletely removed electrolyte may be corrosive and flammable, shortening battery life and potentially causing short circuits, leakage, or even explosions when the battery is subjected to external impacts or improper use. Utility Model Content

[0003] I. Technical problems to be solved

[0004] The purpose of this invention is to provide a lithium battery tab bending and repositioning device that automatically controls the bending and repositioning of the tab, so that the battery fluid residue between the tab and the inner wall of the lithium battery can be cleaned.

[0005] II. Technical Solution

[0006] This utility model is achieved through the following technical solution:

[0007] This utility model proposes a lithium battery tab bending and repositioning device, including a rotary table for supporting the rotation of multiple lithium batteries, a bending mechanism, and a straightening mechanism. The rotary table has a bending station corresponding to the lower part of the bending mechanism and a straightening station corresponding to the lower part of the straightening mechanism. The bending mechanism includes at least a first pressing block that can bend the lithium battery tab and top cover away from the edge of the lithium battery at the bending station. The straightening mechanism includes at least a second pressing block that can push the bent lithium battery tab and top cover back to their original position at the straightening station.

[0008] Furthermore, the bending mechanism also includes a first bracket, a first bidirectional cylinder fixed on the first bracket, and a third pressure block. The first bidirectional cylinder is connected to the first pressure block and the third pressure block at both ends, and can drive the first pressure block and the third pressure block in a straight line to change the distance between them.

[0009] Furthermore, the first pressure block and the third pressure block have a first inclined surface and a second inclined surface that are parallel to each other on their opposite sides. The first inclined surface and the second inclined surface are respectively attached to the two sides of the lithium battery tab and define the angle of the lithium battery top cover after bending.

[0010] Furthermore, the lower edge of the first inclined surface is provided with an arc-shaped chamfer.

[0011] Furthermore, the corrective mechanism also includes a second bracket, a second bidirectional cylinder fixed on the second bracket, and a fourth pressure block. The two ends of the second bidirectional cylinder are respectively connected to the second pressure block and the fourth pressure block, and can drive the second pressure block and the fourth pressure block in a straight line to change the distance between them.

[0012] Furthermore, the second and fourth pressing blocks have a first vertical surface and a second vertical surface on opposite sides, respectively. The second pressing block also has a third inclined surface supported by the lower edge of the first vertical surface. The slope of the third inclined surface is consistent with the tilt slope of the lithium battery top cover after bending, and the length of the third inclined surface is shorter than the diameter of the lithium battery top cover.

[0013] III. Beneficial Effects

[0014] Compared with the prior art, this utility model has the following advantages:

[0015] In this invention, a bending mechanism bends the tabs and top cover of the lithium battery to a fixed clearance angle, and a resetting mechanism resets the tabs and top cover, thereby increasing the gap between the tabs and the inner wall of the lithium battery, making it easier to clean the residual battery fluid. The two pairs of clamps of the first and third movable pressure blocks precisely define the angle of the top cover and the bent tabs, ensuring consistency in each operation, improving production line efficiency, and enhancing product quality. Attached Figure Description

[0016] Figure 1 This is a front view of the present invention;

[0017] Figure 2 yes Figure 1 A magnified view of part A in the middle;

[0018] Figure 3 yes Figure 1 A magnified view of part B in the middle section;

[0019] Figure 4 This is a three-dimensional structural diagram of the bending mechanism;

[0020] Figure 5 This is a three-dimensional structural diagram of the corrective mechanism;

[0021] Figure 6 This is a diagram showing the morphological changes of a lithium battery during the bending process;

[0022] Figure 7 This is a diagram showing the morphological changes of a lithium battery during the recovery process;

[0023] 1. Lithium battery; 1a. Folded ear; 1b. Top cover; 2. Rotary disk; 3. Bending mechanism; 31. First support; 32. Third pressure block; 321. Second inclined surface; 33. First pressure block; 331. First inclined surface; 3311. Arc chamfer; 34. First bidirectional cylinder; 4. Realignment mechanism; 41. Second support; 42. Fourth pressure block; 421. Second vertical surface; 43. Second pressure block; 431. First vertical surface; 432. Third inclined surface; 44. Second bidirectional cylinder. Detailed Implementation

[0024] 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.

[0025] A lithium battery tab bending and repositioning device, please refer to Figure 1 The system includes a rotary table 2 for supporting the rotation of multiple lithium batteries 1, a bending mechanism 3, and a straightening mechanism 4. The rotary table 2 drives the lithium batteries 1 to rotate and change the work position, performing different processes at different work positions. The rotary table 2 has a bending work position corresponding to the lower part of the bending mechanism 3 and a straightening work position corresponding to the lower part of the straightening mechanism 4. At the bending work position, the folding ears 1a and the top cover 1b of the lithium battery 1 are bent, thereby causing the folding ears 1a to move out of place. At the straightening work position, the folding ears 1a and the top cover 1b of the lithium battery 1 are reset. Between the bending work position and the straightening work position, the battery fluid between the folding ears 1a and the inner wall of the main body of the lithium battery 1 is cleaned.

[0026] Figure 1 , 2 Figure 4 shows the structure of the bending mechanism 3, which includes a first pressing block 33, a first support 31, a first bidirectional cylinder 34 fixed on the first support 31, and a third pressing block 32. The first bidirectional cylinder 34 is connected to the first pressing block 33 and the third pressing block 32 at its two ends, and can drive the first pressing block 33 in a straight line to change the distance between the first pressing block 33 and the third pressing block 32. At the bending station, when the first pressing block 33 moves, it pushes the lithium battery 1 tabs and the top cover 1b away from the edge of the lithium battery 1 and bends them.

[0027] In this embodiment, the first pressing block 33 and the third pressing block 32 have a first inclined surface 331 and a second inclined surface 321 that are parallel to each other on their opposite sides. The first inclined surface 331 and the second inclined surface 321 are respectively attached to the two sides of the electrode tab of the lithium battery 1 and define the angle of the top cover 1b of the lithium battery 1 after bending.

[0028] Figure 6The diagram illustrates the morphological changes of the lithium battery 1 during the bending process. In use, the first bidirectional cylinder 34 moves the first pressing block 33 and the third pressing block 32. The bottom of the first pressing block 33 first contacts the tab, causing the tab to bend towards the center of the upper part of the lithium battery 1. Continuing to move, the first pressing block 33 and the third pressing block 32 clamp the top cover 1b of the lithium battery 1 between the first inclined surface 331 and the second inclined surface 321 from both sides towards the center. At this time, after the tab 1a moves towards the center of the lithium battery 1, the gap between the tab 1a and the inner wall of the main body of the lithium battery 1 is cleared, allowing a cleaning device located between the bending and straightening stations to reach into the lithium battery 1 and clean any residual battery fluid.

[0029] In addition, the lower edge of the first inclined surface 331 is provided with an arc-shaped chamfer 3311. When the bottom of the first pressing block 33 contacts the folded ear 1a first, the arc-shaped chamfer 3311 helps to increase the contact area with the surface of the folded ear 1a and prevents the folded ear 1a from breaking due to local stress concentration.

[0030] The corrective mechanism 4 includes a second pressing block 43, a second support 41, a second bidirectional cylinder 44 fixed on the second support 41, and a fourth pressing block 42. The two ends of the second bidirectional cylinder 44 are respectively connected to the second pressing block 43 and the fourth pressing block 42, and can drive the second pressing block 43 and the fourth pressing block 42 in a straight line to change the distance between them. At the corrective station, the second pressing block 43 moves to push the bent lithium battery 1 tab and top cover 1b back to their original positions.

[0031] In this embodiment, the second pressing block 43 and the fourth pressing block 42 have a first vertical surface 431 and a second vertical surface 421 on opposite sides, respectively. The second pressing block 43 also has a third inclined surface 432 that is supported by the lower edge of the first vertical surface 431. The slope of the third inclined surface 432 is consistent with the tilt slope of the top cover 1b of the lithium battery 1 after bending. The length of the third inclined surface 432 is shorter than the diameter of the top cover 1b of the lithium battery 1.

[0032] Figure 7 The diagram shows the morphological changes of the lithium battery 1 during the correction process. In use, the second bidirectional cylinder 44 drives the second pressing block 43 and the fourth pressing block 42 to move. The third inclined surface 432 first adheres to the upper surface of the top cover 1b of the lithium battery 1. After continuing to move, the second pressing block 43 and the fourth pressing block 42 clamp the top cover 1b of the lithium battery 1 between the first vertical surface 431 and the second vertical surface 421 from both sides to the middle, until the top cover 1b and the folded ear 1a return to the vertical position.

[0033] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention. The technical content for which protection is sought in the present invention has been fully described in the claims.

Claims

1. A lithium battery tab bending and repositioning device, characterized in that, The device includes a rotary table for supporting the rotation of multiple lithium batteries, a bending mechanism, and a straightening mechanism. The rotary table has a bending station corresponding to the area below the bending mechanism and a straightening station corresponding to the area below the straightening mechanism. The bending mechanism includes at least a first pressing block that can bend the lithium battery tabs and top cover away from the edge of the lithium battery at the bending station. The straightening mechanism includes at least a second pressing block that can push the bent lithium battery tabs and top cover back to their original positions at the straightening station.

2. The lithium battery tab bending and repositioning device according to claim 1, characterized in that, The bending mechanism further includes a first bracket, a first bidirectional cylinder fixed on the first bracket, and a third pressure block. The first bidirectional cylinder is connected to the first pressure block and the third pressure block at both ends, and can drive the first pressure block and the third pressure block in a straight line to change the distance between them.

3. The lithium battery tab bending and repositioning device according to claim 2, characterized in that, The first pressure block and the third pressure block have a first inclined surface and a second inclined surface that are parallel to each other on their opposite sides. The first inclined surface and the second inclined surface are respectively attached to the two sides of the lithium battery tab and define the angle of the lithium battery top cover after bending.

4. A lithium battery tab bending and repositioning device according to claim 3, characterized in that, The lower edge of the first inclined surface is provided with an arc-shaped chamfer.

5. A lithium battery tab bending and repositioning device according to any one of claims 1-4, characterized in that, The corrective mechanism further includes a second bracket, a second bidirectional cylinder fixed on the second bracket, and a fourth pressure block. The two ends of the second bidirectional cylinder are respectively connected to the second pressure block and the fourth pressure block, and can drive the second pressure block and the fourth pressure block in a straight line to change the distance between them.

6. A lithium battery tab bending and repositioning device according to claim 5, characterized in that, The second and fourth pressing blocks have a first vertical surface and a second vertical surface on opposite sides, respectively. The second pressing block also has a third inclined surface that is supported by the lower edge of the first vertical surface. The slope of the third inclined surface is consistent with the tilt slope of the lithium battery top cover after bending. The length of the third inclined surface is shorter than the diameter of the lithium battery top cover.

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