An adjustable cell tab welding jig

Abstract

The utility model discloses an adjustable cell tab welding jig, including bottom plate, first baffle group and second baffle group, the bottom plate has cell placement area and tab placement area, the cell placement area forms with first adjusting hole group, and the tab placement area forms with second adjusting hole group, first baffle group can detachable connection in first adjusting hole group, and the length, width and glue edge distance size adjustment of cell are realized through the connection of first baffle group with different hole position in first adjusting hole group, second baffle group can detachable connection in second adjusting hole group, and the width and tab spacing size adjustment of tab are realized through the connection of second baffle group with different hole position in second adjusting hole group. The utility model discloses can save mould development cycle and manufacturing cost to reduce the manufacturing cost of cell.

Description

Technical Field

[0001] This utility model relates to the field of battery cell manufacturing technology, specifically to an adjustable battery cell electrode welding fixture. Background Technology

[0002] In the battery cell manufacturing process, after the positive and negative electrode sheets and separator are formed by a winding machine or stacking machine, metal conductive tabs need to be welded to the edges of the electrode sheets for subsequent current transmission. In existing technologies, the formed battery cell and tabs are typically placed into the battery cell placement slot and tab placement slot of a welding fixture, respectively, and welding is completed by positioning the battery cell and tabs using the welding fixture. However, the dimensions of the battery cell placement slot and tab placement slot in the aforementioned existing welding fixture are fixed. When the specifications of the battery cell and tabs change—that is, when any parameter such as the length of the battery cell, the width of the battery cell, the width of the tabs, the distance between the two tabs, or the adhesive edge distance changes—the welding fixture needs to be remade. This increases the mold development time and cost, thereby increasing the battery cell manufacturing cycle and cost. Utility Model Content

[0003] In view of this, this utility model proposes an adjustable battery cell tab welding fixture to solve the technical problem in the prior art that when the specifications of the battery cell and the tab change, a new welding fixture needs to be developed and manufactured, resulting in a long manufacturing cycle and high manufacturing cost for the battery cell.

[0004] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0005] An adjustable battery cell tab welding fixture, comprising:

[0006] The base plate has a cell placement area and a tab placement area. The cell placement area has a first set of adjustment holes, and the tab placement area has a second set of adjustment holes.

[0007] The first baffle group is detachably connected to the first adjustment hole group. The length, width and adhesive edge distance of the battery cell can be adjusted by connecting the first baffle group with different holes in the first adjustment hole group.

[0008] The second baffle group is detachably connected to the second adjustment hole group. The size adjustment of the tab width and the tab spacing is achieved by connecting the second baffle group with different holes in the second adjustment hole group.

[0009] In some embodiments, the first adjustment hole group includes a plurality of first positioning holes and a plurality of first adjustment holes, the plurality of first positioning holes being symmetrically arranged on both sides of the center line of the cell placement area, and the plurality of first adjustment holes being distributed on both sides of the first positioning holes.

[0010] In some embodiments, the first baffle group includes a first baffle bar, a second baffle bar, and a third baffle bar. The first baffle bar is detachably connected to the first positioning hole, and the second baffle bar and the third baffle bar are detachably connected to the first adjustment holes located on both sides of the first positioning hole.

[0011] In some embodiments, the first stop bar, the second stop bar, and the third stop bar are all provided with a first connecting hole.

[0012] In some embodiments, the second adjustment hole group includes a plurality of second positioning holes and a plurality of second adjustment holes, the plurality of second positioning holes being symmetrically arranged on both sides of the center line of the tab placement area, and the plurality of second adjustment holes being distributed on both sides of the second positioning holes.

[0013] In some embodiments, the second baffle assembly includes four movable blocks, two of which are detachably connected to the second positioning holes on both sides, and the other two are detachably connected to the second adjustment holes located on both sides of the second positioning holes.

[0014] In some embodiments, each of the four movable blocks is provided with a second connection hole.

[0015] In some embodiments, the center lines of the cell placement area and the tab placement area are located on the same straight line.

[0016] In some embodiments, the base plate further includes a welding area, which is a rectangular through hole opened in the base plate between the cell placement area and the tab placement area.

[0017] In some embodiments, the base plate further has a mounting area, which is a notch formed by extending from one side of the cell placement area toward its centerline.

[0018] Compared with the prior art, the beneficial effects of this utility model mainly include:

[0019] The adjustable battery cell tab welding fixture provided by this utility model can adjust the length, width, and adhesive edge distance of the battery cell by connecting the first baffle group to different holes in the first adjustment hole group. Simultaneously, it can adjust the width of the tab and the distance between the two tabs by connecting the second baffle group to different holes in the second adjustment hole group. Thus, when any parameter of the battery cell length, width, tab width, distance between the two tabs, or adhesive edge distance changes, there is no need to redevelop and manufacture the welding fixture. Simply adjust the first and second baffle groups to appropriate positions and connect them to the first and second adjustment hole groups. This improves the versatility of the welding fixture, saves mold development time and costs, and thereby reduces the manufacturing cost and cycle time of the battery cell. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the existing battery cell electrode welding fixture;

[0021] Figure 2 This is a diagram showing the usage state of the adjustable battery cell tab welding fixture provided by this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the base plate described in this utility model;

[0023] Figure 4 This is a plan view of the welding fixture described in this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 100. Base plate; 101. Cell placement area; 102. Tab placement area; 103. Welding area; 104. Mounting area; 110. First adjustment hole group; 111. First positioning hole; 112. First adjustment hole; 120. Second adjustment hole group; 121. Second positioning hole; 122. Second adjustment hole.

[0026] 200, First baffle assembly; 210, First baffle bar; 220, Second baffle bar; 230, Third baffle bar;

[0027] 300. Second baffle assembly; 310. Movable block. Detailed Implementation

[0028] 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.

[0029] like Figure 1As shown, existing welding fixtures for welding battery cells and tabs typically have battery cell placement slots A and tab placement slots B on the main body, which are respectively matched to the shapes of the battery cell and tab. Obviously, the dimensions of the battery cell placement slot A and tab placement slot B are fixed. When any of the following parameters changes, such as the length L1 of the battery cell, the width W1 of the battery cell, the width W2 of the tab, the distance H1 between the two tabs, and the adhesive edge distance H2, the welding fixture needs to be remade, resulting in a higher cycle and cost for battery cell manufacturing.

[0030] In response to the above technical problems, such as Figures 2-4 As shown, this utility model designs an adjustable battery cell tab welding fixture, including a base plate 100, a first baffle group 200, and a second baffle group 300. The surface of the base plate 100 is divided into a battery cell placement area 101 and a tab placement area 102. The battery cell placement area 101 forms a first adjustment hole group 110, and the tab placement area 102 forms a second adjustment hole group 120. The first baffle group 200 is detachably connected to the first adjustment hole group 110. The length L1, width W1, and adhesive edge distance H2 of the battery cell can be adjusted by connecting the first baffle group 200 to different holes in the first adjustment hole group 110. The second baffle group 300 is detachably connected to the second adjustment hole group 120. The tab width W2 and tab spacing H1 can be adjusted by connecting the second baffle group 300 to different holes in the second adjustment hole group 120.

[0031] When welding different types of battery cells and tabs using the welding fixture designed in this utility model, the length L1, width W1, tab width W2, distance H1 between two tabs, and adhesive edge distance H2 of the battery cell can be adjusted simply by connecting the first baffle group 200 to different holes in the first adjustment hole group 110 and the second baffle group 300 to different holes in the second adjustment hole group 120. In this way, the technical objective of using one welding fixture to weld various types of battery cells and tabs is achieved, saving mold development time and cost, thereby reducing the manufacturing cost and cycle of the battery cell.

[0032] In one embodiment, the base plate 100 is a rectangular plate with a certain thickness, which is divided into a tab placement area 102, a welding area 103 and a cell placement area 101 along its length. The welding area 103 is a rectangular through hole opened in the base plate 100 between the cell placement area 101 and the tab placement area 102. An installation area 104 is formed on one side of the cell placement area 101. The installation area 104 is a notch formed by extending from one side of the cell placement area 101 toward its centerline.

[0033] In one embodiment, the center lines of the cell placement area 101 and the tab placement area 102 are located on the same straight line.

[0034] In one embodiment, the first adjustment hole group 110 includes a first positioning hole 111 and a first adjustment hole 112. A plurality of first positioning holes 111 are symmetrically arranged on both sides of the center line of the cell placement area 101, and a plurality of first adjustment holes 112 are distributed on both sides of the first positioning holes 111.

[0035] In one embodiment, the first positioning hole 111 is opened axially along the center line of the cell placement area 101, while the first adjustment hole 112 is opened radially along the center line of the cell placement area 101, and the setting height of the first adjustment hole 112 located on one side of the mounting area 104 does not exceed the mounting area 104.

[0036] In one embodiment, the first baffle group 200 includes a first baffle 210, a second baffle 220 and a third baffle 230. The first baffle 210 is detachably connected to the first positioning hole 111, and the second baffle 220 and the third baffle 230 are detachably connected to the first adjustment holes 112 located on both sides of the first positioning hole 111.

[0037] In one embodiment, the first stop bar 210, the second stop bar 220 and the third stop bar 230 are all provided with a first connecting hole, which is preferably an oblong hole.

[0038] In one embodiment, the first stop bar 210, the second stop bar 220, and the third stop bar 230 may have the same or different dimensions.

[0039] In one embodiment, the second adjustment hole group 120 includes a second positioning hole 121 and a second adjustment hole 122. A plurality of second positioning holes 121 are symmetrically arranged on both sides of the center line of the tab placement area 102, and a plurality of second adjustment holes 122 are distributed on both sides of the second positioning holes 121.

[0040] That is, in order to ensure positioning accuracy, the center lines of the cell placement area 101 and the tab placement area 102 are the same center line. In other words, the multiple first positioning holes 111 and the multiple second positioning holes 121 are symmetrically arranged on both sides of the center line.

[0041] In one embodiment, the second baffle assembly 300 includes four movable blocks 310, two of which are detachably connected to the second positioning holes 121 on both sides of the center line, and the other two are detachably connected to the second adjustment holes 122 located on both sides of the second positioning holes 121.

[0042] In one embodiment, each of the four movable blocks 310 is provided with a second connecting hole, which is preferably an oblong hole.

[0043] In the above technical solution, adjusting the distance between the second stop bar 220 and the third stop bar 230 can adjust the width W1 of the battery cell; adjusting the distance between the first stop bar 210 and the movable block 310 can adjust the length L1 and the adhesive edge distance H2 of the battery cell; and adjusting the distance between the movable blocks 310 can adjust the width W2 of the electrode tab and the distance H1 between the two electrodes. Thus, the welding fixture provided by this utility model allows for free adjustment according to the dimensions of different battery cells and electrodes, improving the versatility of the welding fixture and saving on the manufacturing cycle and cost of the battery cell.

[0044] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. An adjustable battery cell tab welding fixture, characterized in that, include: The base plate has a cell placement area and a tab placement area. The cell placement area has a first set of adjustment holes, and the tab placement area has a second set of adjustment holes. The first baffle group is detachably connected to the first adjustment hole group. The length, width and adhesive edge distance of the battery cell can be adjusted by connecting the first baffle group with different holes in the first adjustment hole group. The second baffle group is detachably connected to the second adjustment hole group. The size adjustment of the tab width and the tab spacing is achieved by connecting the second baffle group with different holes in the second adjustment hole group.

2. The adjustable battery cell tab welding fixture according to claim 1, characterized in that, The first adjustment hole group includes a plurality of first positioning holes and a plurality of first adjustment holes. The plurality of first positioning holes are symmetrically arranged on both sides of the center line of the cell placement area, and the plurality of first adjustment holes are distributed on both sides of the first positioning holes.

3. The adjustable battery cell tab welding fixture according to claim 2, characterized in that, The first baffle assembly includes a first baffle bar, a second baffle bar, and a third baffle bar. The first baffle bar is detachably connected to the first positioning hole, and the second baffle bar and the third baffle bar are detachably connected to the first adjustment holes located on both sides of the first positioning hole.

4. The adjustable battery cell tab welding fixture according to claim 3, characterized in that, The first stop bar, the second stop bar, and the third stop bar are all provided with a first connecting hole.

5. The adjustable battery cell tab welding fixture according to claim 1, characterized in that, The second adjustment hole group includes a plurality of second positioning holes and a plurality of second adjustment holes. The plurality of second positioning holes are symmetrically arranged on both sides of the center line of the tab placement area, and the plurality of second adjustment holes are distributed on both sides of the second positioning holes.

6. The adjustable battery cell tab welding fixture according to claim 5, characterized in that, The second baffle assembly includes four movable blocks, two of which are detachably connected to the second positioning holes on both sides, and the other two are detachably connected to the second adjustment holes located on both sides of the second positioning holes.

7. The adjustable battery cell tab welding fixture according to claim 6, characterized in that, Each of the four movable blocks is provided with a second connection hole.

8. The adjustable battery cell tab welding fixture according to claim 1, characterized in that, The center lines of the cell placement area and the tab placement area are on the same straight line.

9. The adjustable battery cell tab welding fixture according to claim 1, characterized in that, The base plate also has a welding area, which is a rectangular through hole opened in the base plate between the cell placement area and the tab placement area.

10. The adjustable battery cell tab welding fixture according to claim 1, characterized in that, The base plate also has an installation area, which is a notch formed by extending from one side of the cell placement area toward its centerline.

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