Movable tab adhesive tape and lithium ion battery tab assembly tool

Abstract

The utility model relates to the technical field of power batteries, and discloses a movable tab rubber strip and a lithium ion battery tab assembly tool. The movable tab adhesive tape comprises an adhesive tape body, the thickness of the adhesive tape body extends in the X direction, the width of the adhesive tape body extends in the Y direction, a through hole for a metal belt to penetrate is formed in the adhesive tape body in a penetrating mode, the length of the through hole extends in the Y direction, and the X direction is perpendicular to the Y direction. According to the utility model, the through hole is formed in the adhesive tape body, and the metal belt penetrates through the adhesive tape body and can move along the length direction of the through hole, so that the width of the exposed part of the adhesive tape body can be adjusted according to requirements and actual conditions when the lithium ion battery tab is assembled, and the risk problem caused by improper exposed size of the adhesive tape body is avoided. The lithium ion battery tab assembly tool can be used for assembling the movable tab adhesive tape on a metal belt connected with a lithium ion battery cell, and the product yield can be improved.

Description

Technical Field

[0001] This utility model relates to the field of power battery technology, and in particular to a movable tab strip and a lithium-ion battery tab assembly fixture. Background Technology

[0002] In the manufacturing process of soft-pack lithium-ion batteries, cell packaging has a significant impact on the quality of the finished cell. In particular, during the top sealing of soft-pack batteries, the tabs with tab adhesive need to be sealed and connected to the PP layer of the aluminum-plastic film by melting at high temperature. This isolates the inside and outside of the cell, preventing external air and moisture from entering the cell and preventing electrolyte from seeping out of the cell.

[0003] Currently, the tabs generally adopt a structure in which the adhesive strip is fused to a specific position on the metal strip. However, due to equipment fluctuations, the adhesive exposed on the tab may be too long or too short. If the adhesive is too long, it will affect the finished product processing. If the adhesive is too short, it will cause a short circuit risk. This will lead to an increase in defective products during the packaging process. The defective products can only be scrapped. At the same time, it is necessary to consider the spacing between spot welds and the addition of trial sealing processes, which will greatly affect the production efficiency of lithium-ion batteries. Utility Model Content

[0004] One of the objectives of this utility model embodiment is to provide a movable tab strip, through which a metal strip can pass, thereby allowing the position of the movable tab strip on the metal strip to be adjusted.

[0005] The second objective of this utility model embodiment is to provide a lithium-ion battery tab assembly fixture that can realize the assembly of movable tab strips and metal strips connected to the lithium-ion battery cell.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] On one hand, a movable tab adhesive strip is provided, including an adhesive strip body, the thickness of the adhesive strip body extending along the X direction, the width of the adhesive strip body extending along the Y direction, the adhesive strip body having a through hole for a metal strip to pass through, the length of the through hole extending along the Y direction, and the X direction being perpendicular to the Y direction.

[0008] As a further embodiment of the movable tab adhesive strip, the thickness of the adhesive strip body located on both sides of the through hole is consistent along the X direction.

[0009] As a further scheme of the movable tab adhesive tape, the adhesive tape body is an integral structure; alternatively, the adhesive tape body comprises two sub-adhesive tapes, the length of the sub-adhesive tapes extends along the Z direction, one side of the sub-adhesive tapes along the X direction has two adhesive regions and a non-adhesive region; along the Z direction, the non-adhesive region is located between the two adhesive regions, the adhesive regions of the two sub-adhesive tapes are correspondingly bonded, and the two non-adhesive regions are opposite to form the through hole, and the X direction, the Y direction and the Z direction are perpendicular to each other.

[0010] As a further scheme of the movable tab adhesive tape, the lengths of the two adhesive regions along the Z direction are consistent.

[0011] On the other hand, a lithium ion battery tab assembly tool is provided for assembling the movable tab adhesive tape on a metal strip connected with a lithium ion cell, the lithium ion battery tab assembly tool comprises:

[0012] A positioning mechanism for fixing the lithium ion cell;

[0013] A first top sealing mechanism and a rack, the first top sealing mechanism is installed on the rack, and the top of the lithium ion cell on the positioning mechanism is opposite to one side of the first top sealing mechanism along the Y direction;

[0014] A limiting mechanism, the limiting mechanism is installed on the positioning mechanism and located on one side of the first top sealing mechanism along the X direction towards the movable tab adhesive tape, the limiting mechanism is provided with two avoiding grooves for the metal strip to pass through, the two avoiding grooves are spaced apart along the Z direction, the width of the avoiding groove along the Z direction is smaller than the width of the movable tab adhesive tape sleeved on the metal strip, one side of the limiting mechanism towards the lithium ion cell is spaced apart from the top of the lithium ion cell, and one side of the movable tab adhesive tape along the Y direction is in contact with the limiting mechanism, and the Y direction and the Z direction are perpendicular to each other.

[0015] As a further scheme of the lithium ion battery tab assembly tool, the limiting mechanism comprises a connecting part, a limiting part and a fastening bolt, the limiting part is fixedly connected with one side of the connecting part along the Z direction, the limiting part is provided with two avoiding grooves, the connecting part is provided with two adjusting long holes, the two adjusting long holes are spaced apart along the Z direction, the length of the adjusting long hole extends along the Y direction, the positioning mechanism is provided with a first fixing hole corresponding to the adjusting long hole, and the fastening bolt is threadedly screwed through the adjusting long hole and the first fixing hole.

[0016] As a further scheme of the lithium ion battery tab assembly tool, one side of the avoiding groove away from the first top sealing mechanism along the X direction is an open structure.

[0017] As a further scheme of the lithium ion battery tab assembly tool, the positioning mechanism comprises a positioning plate and a pressing plate arranged on one side of the positioning plate in the X direction, the pressing plate can press the lithium ion battery cell tightly on the positioning plate, the positioning plate is provided with the first fixing hole and a mounting hole; the first top sealing mechanism comprises a first base and a first top sealing head fixedly connected, the first base is located on the side of the positioning plate away from the pressing plate, the first top sealing head is located on the side of the first base facing the positioning plate, the first top sealing head passes through the mounting hole and contacts the movable tab rubber strip, and the limiting portion is located at one end of the mounting hole away from the first base in the X direction, and the first top sealing head is located between the limiting portion and the top of the lithium ion battery cell.

[0018] As a further scheme of the lithium ion battery tab assembly tool, the first top sealing mechanism further comprises a supporting portion for supporting the metal strip, the supporting portion is fixed on the first base, and the limiting portion is provided with a through hole in the X direction for the supporting portion to pass through.

[0019] As a further scheme of the lithium ion battery tab assembly tool, the first top sealing mechanism further comprises a supporting portion for supporting the metal strip, the supporting portion is fixed on the first base, and the limiting portion is provided with a through hole in the X direction for the supporting portion to pass through.

[0020] Advantages:

[0021] The utility model discloses a through hole is designed to the rubber strip body, and the metal strip passes through the rubber strip body and can move along the length direction of the through hole, when assembling the lithium ion battery tab, the width of the exposed part of the rubber strip body can be adjusted according to the need and actual situation, and the risk problem caused by the improper exposed size of the rubber strip body is avoided.

[0022] In the utility model, after the metal strip is fixed with the lithium ion battery cell, the lithium ion battery cell is fixed through the positioning mechanism, the movable tab rubber strip is sleeved on the metal strip, the movable tab rubber strip is moved along the length direction of the metal strip by adjusting, one side of the movable tab rubber strip along the Y direction contacts the limiting mechanism, the distance between one side of the movable tab rubber strip away from the lithium ion battery cell and the top of the cell is ensured to be proper, so that the size of the movable tab rubber strip exposed to the lithium ion battery can be kept in the proper range when the shell is assembled subsequently. Compared with the prior art, after the position of the movable tab rubber strip of the utility model is adjusted, the movable tab rubber strip is limited to move along the metal strip through the limiting mechanism, so that the exposed size of the tab rubber strip of the assembled lithium ion battery is kept in the proper range, and the product yield is improved. Attached Figure Description

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0024] Figure 1 This is a schematic diagram of the assembly of the movable electrode tab rubber strip and metal strip according to an embodiment of the present invention.

[0025] Figure 2 This is a schematic diagram of the structure of the movable tab rubber strip according to an embodiment of the present invention.

[0026] Figure 3 for Figure 2 A magnified view of part A in the diagram.

[0027] Figure 4 This is a side view of the sub-adhesive strip according to another embodiment of the present invention.

[0028] Figure 5 This is a schematic diagram of the lithium-ion battery tab assembly tooling according to an embodiment of the present invention from a first-view perspective.

[0029] Figure 6 This is a schematic diagram of the lithium-ion battery tab assembly tooling according to an embodiment of the present invention from a second perspective.

[0030] Figure 7 This is a partially exploded schematic diagram of the lithium-ion battery tab assembly tooling according to an embodiment of the present invention.

[0031] Figure 8 This is a schematic diagram of the assembly structure of the limiting mechanism and the positioning plate according to an embodiment of the present invention.

[0032] In the picture:

[0033] 1. Adhesive strip body; 11. Sub-adhesive strip; 111. Adhesive area; 112. Non-adhesive area; 2. Metal strip; 3. Through hole; 4. Lithium-ion battery cell;

[0034] 100. Positioning mechanism; 101. First fixing hole; 102. Mounting hole; 103. Second fixing hole; 110. Positioning plate; 120. Pressure plate; 130. Rotating assembly; 131. Mounting base; 132. Connecting rod; 200. First top sealing mechanism; 210. First base; 220. First top sealing head; 230. Support part; 300. Limiting mechanism; 301. Clearance groove; 302. Adjusting elongated hole; 303. Through hole; 310. Connecting part; 320. Limiting part; 400. Second top sealing mechanism; 410. Second base; 420. Second top sealing head; 430. Pressing part. Detailed Implementation

[0035] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0036] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationships shown in the accompanying drawings. They are used solely for ease of description and simplification of operation, and do not indicate or imply that the device or component 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 this utility model. Furthermore, the terms "first," "second," etc., are merely used for distinction in description and have no special meaning.

[0039] In this embodiment, the electrode tab consists of a movable electrode tab strip and a metal strip 2.

[0040] like Figures 1 to 3 As shown, the movable tab adhesive strip of this embodiment includes an adhesive strip body 1. The thickness of the adhesive strip body 1 extends along the X direction, the width of the adhesive strip body 1 extends along the Y direction, and the adhesive strip body 1 is provided with a through hole 3 for the metal strip 2 to pass through. The length of the through hole 3 extends along the Y direction, and the X direction is perpendicular to the Y direction.

[0041] The embodiment designs the through hole 3 in the adhesive strip body 1, the metal strip 2 passes through the adhesive strip body 1 and can move along the length direction of the through hole 3, and when the lithium ion battery tab is assembled, the width of the exposed part of the adhesive strip body 1 can be adjusted according to the actual situation, so that the risk problem caused by the improper exposed size of the adhesive strip body 1 is avoided.

[0042] Further, along the X direction, the thickness of the adhesive strip body 1 located on both sides of the through hole 3 is consistent, and when the adhesive strip body 1 is connected with the top of the battery and the metal strip 2 through hot melting, the bonding stability can be improved.

[0043] In the embodiment, the adhesive strip body 1 is a one-piece structure, and the through hole 3 is formed on one side of the one-piece adhesive strip body 1 along the Y direction. The specific hole opening method is a conventional technical means in the art, and will not be described in detail.

[0044] Of course, the adhesive strip body 1 is not limited to a one-piece structure. In other embodiments, the adhesive strip body 1 includes two sub-adhesive strips 11, as shown in Figure 4 The length of the sub-adhesive strip 11 extends along the Z direction, and one side of the sub-adhesive strip 11 along the X direction has two bonding areas 111 and a non-bonding area 112. Along the Z direction, the non-bonding area 112 is located between the two bonding areas 111, the bonding areas 111 of the two sub-adhesive strips 11 are bonded one by one, the two non-bonding areas 112 are opposite to form the through hole 3, and the X direction, the Y direction and the Z direction are perpendicular to each other. The embodiment designs the adhesive strip body 1 as a double-layer bonding structure, which facilitates the opening of the through hole 3 on the adhesive strip body 1.

[0045] Further, the lengths of the two bonding areas 111 along the Z direction are consistent, that is, the two bonding areas 111 are symmetrical with respect to the bonding area 111, which can improve the bonding stability of the movable tab adhesive strip and the metal strip 2.

[0046] The embodiment also provides a lithium ion battery tab assembly tool for assembling the metal strip 2 connected with the lithium ion cell 4 and the movable tab adhesive strip in any of the above embodiments. As shown in Figures 5 to 8 The lithium ion battery tab assembly tool of the embodiment includes a positioning mechanism 100, a first top sealing mechanism 200, a rack (not shown in the figure) and a limiting mechanism 300.

[0047] The positioning mechanism 100 is used to fix the lithium ion cell 4.

[0048] The first top sealing mechanism 200 is installed on the rack, and the top of the lithium ion cell 4 on the positioning mechanism 100 is opposite to one side of the first top sealing mechanism 200 along the Y direction.

[0049] The limiting mechanism 300 is installed on the positioning mechanism 100 and located on the side of the first top sealing mechanism 200 along the X direction towards the movable tab rubber, the limiting mechanism 300 is provided with two avoiding grooves 301 for the metal strip 2 to pass through, the two avoiding grooves 301 are spaced apart along the Z direction, the width of the avoiding groove 301 along the Z direction is smaller than the width of the movable tab rubber sleeved on the metal strip 2, and the side of the limiting mechanism 300 towards the lithium ion battery cell 4 is spaced apart from the top of the lithium ion battery cell 4, and the side of the movable tab rubber along the Y direction is in contact with the limiting mechanism 300, and the Y direction is perpendicular to the Z direction.

[0050] It can be understood that after the metal strip 2 is fixed with the lithium ion battery cell 4, the lithium ion battery cell 4 is fixed by the positioning mechanism 100, the movable tab rubber is sleeved on the metal strip 2, and by adjusting the movement of the movable tab rubber along the length direction of the metal strip 2, the side of the movable tab rubber along the Y direction is in contact with the limiting mechanism 300, so that the side of the movable tab rubber away from the lithium ion battery cell 4 has a proper distance from the top of the battery cell, thereby ensuring that the size of the movable tab rubber exposed to the lithium ion battery during subsequent assembly of the shell is kept within a proper range. Compared with the prior art, after the position of the movable tab rubber of the embodiment is adjusted, the movable tab rubber is limited from moving along the metal strip 2 by the limiting mechanism 300, so that the exposed size of the tab rubber of the assembled lithium ion battery is kept within a proper range, thereby improving the product yield.

[0051] The lithium ion battery cell 4 is not limited to a soft package battery shape, but can also be a square structure, a cylindrical structure, an elliptical structure, etc.

[0052] Further, as shown in Figure 8 The limiting mechanism 300 includes a connecting portion 310, a limiting portion 320 and a fastening bolt (not shown in the figure), the limiting portion 320 is fixedly connected with the side of the connecting portion 310 along the Z direction, the limiting portion 320 is provided with two avoiding grooves 301, the connecting portion 310 is provided with two adjusting long holes 302, the two adjusting long holes 302 are spaced apart along the Z direction, the length of the adjusting long hole 302 extends along the Y direction, the positioning mechanism 100 is provided with a first fixing hole 101 corresponding to the adjusting long hole 302, and the fastening bolt is screwed and connected with the first fixing hole 101 through the adjusting long hole 302.

[0053] Wherein, the distance between the movable tab rubber and the top of the battery is kept in a proper range after the position of the limiting part 320 is adjusted, the fastening bolt is used to pass through the adjusting long hole 302 and is screwed into the first fixing hole 101, so that the connecting part 310 and the limiting part 320 can be locked and fixed on the positioning mechanism 100, at this time, the metal strip 2 fixedly connected with the lithium ion battery 4 passes through the avoiding groove 301, and the movable tab rubber is limited on the side of the limiting part 320 facing the lithium ion battery 4 and is in contact with the side of the limiting part 320 along the Y direction.

[0054] Further, the side of the avoiding groove 301 along the X direction away from the first top sealing mechanism 200 is an open structure, and the metal strip 2 can be conveniently placed at the position of the avoiding groove 301 by using this structure design.

[0055] Further, as shown in Figure 5 and Figure 6 The positioning mechanism 100 includes a positioning plate 110 and a pressing plate 120 arranged on the side of the positioning plate 110 along the X direction, the pressing plate 120 can press the lithium ion battery 4 tightly on the positioning plate 110, the positioning plate 110 is provided with the first fixing hole 101 and the mounting hole 102; the first top sealing mechanism 200 includes the first base 210 and the first top sealing head 220 fixedly connected, the first base 210 is located on the side of the positioning plate 110 away from the pressing plate 120, the first top sealing head 220 is located on the side of the first base 210 opposite to the positioning plate 110, the first top sealing head 220 passes through the mounting hole 102 and is in contact with the movable tab rubber, the limiting part 320 is located at the end of the mounting hole 102 away from the first base 210 along the X direction, and the first top sealing head 220 is located between the limiting part 320 and the top of the lithium ion battery 4.

[0056] Wherein, the positioning plate 110 is provided with the mounting hole 102, which can facilitate the first top sealing head 220 to pass through and contact the side surface of the movable tab rubber sleeved on the metal strip 2 along the X direction, which is conducive to the subsequent top sealing operation. Exemplarily, the number of the first fixing hole 101 is more than two, and the plurality of first fixing holes 101 are distributed along the Z direction, therefore, in addition to adjusting the limiting mechanism 300 along the Y direction, the position of the limiting mechanism 300 can also be adjusted along the Z direction, so that the avoiding groove 301 opened on the limiting part 320 is opposite to the metal strip 2.

[0057] In this embodiment, the first top sealing mechanism 200 further includes a supporting part 230 for supporting the metal strip 2, the supporting part 230 is fixed on the first base 210, and the limiting part 320 is provided with a via hole 303 along the X direction for the supporting part 230 to pass through.

[0058] Wherein, after the metal strip 2 passes through the avoiding groove 301, the support effect of the first top sealing head 220 cooperating with the support part 230 on the metal strip 2 makes the metal strip 2 keep flat, so as to improve the top sealing connection effect of the metal strip 2 and the movable tab rubber.

[0059] The lithium ion battery tab assembly tool of the embodiment further comprises a second top sealing mechanism 400, as shown in the figure. Figure 7 As shown in the figure, the second top sealing mechanism 400 comprises a second base 410, a second top sealing head 420 and a pressing part 430 fixedly connected, the second top sealing head 420 and the pressing part 430 are located on the side of the second base 410 facing the first top sealing mechanism 200, the second top sealing head 420 is opposite to the first top sealing head 220, and the pressing part 430 is opposite to the support part 230, the pressing part 430 is used for pressing the metal strip 2 on the support part 230.

[0060] It can be understood that when the metal strip 2 and the movable tab rubber are top sealed and connected, high temperature may cause the metal strip 2 to warp, affecting the assembly effect. In the embodiment, the pressing part 430 is arranged, and the metal strip 2 is pressed on the support part 230 by the pressing part 430 during the top sealing process, which can effectively prevent the metal strip 2 from warping and improve the lithium ion battery tab assembly yield.

[0061] In the embodiment, the first top sealing mechanism 200 and the second top sealing mechanism 400 are respectively installed on the corresponding racks and are driven to move by the motor or the air cylinder (not shown in the figure), the positioning mechanism 100 is installed on the corresponding support and is driven to move along the Y direction by the corresponding motor or air cylinder. The pressing plate 120 is rotationally connected with the positioning plate 110 through the rotating assembly 130, and the rotating axis extends along the Z direction. The pressing plate 120 can be rotated to be parallel to the positioning plate 110, so that the lithium ion cell 4 can be fixed on the positioning plate 110. The positioning plate 110 is further provided with a plurality of second fixing holes 103, the plurality of second fixing holes 103 are spaced apart along the Z direction, the first fixing hole 101 and the second fixing hole 103 are respectively located at the two edges of the positioning plate 110 along the Y direction, and the mounting hole 102 is arranged adjacent to the first fixing hole 101. The rotating assembly 130 comprises a mounting seat 131 and a connecting rod 132, one end of the connecting rod 132 is rotationally connected with the mounting seat 131 through a rotating shaft, the other end is connected with the pressing plate 120, and the bolt is threadedly screwed with the second fixing hole 103 through the mounting seat 131, so as to fix the mounting seat 131 on the positioning plate 110.

[0062] Before top sealing, the first top sealing mechanism 200 and the second top sealing mechanism 400 are in a separated state, the lithium ion battery cell 4 is placed on the positioning plate 110, and the metal strip 2 passes through the avoiding groove 301. The lithium ion battery cell 4 assembled with the metal strip 2 is pressed by the pressing plate 120, the positioning mechanism 100 and the lithium ion battery cell 4 are pushed to the first top sealing mechanism 200 and the second top sealing mechanism 400, then the position of the first top sealing mechanism 200 and the second top sealing mechanism 400 is adjusted according to the position of the movable tab rubber, and the top sealing operation is performed after the position is adjusted.

[0063] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A movable tab gum strip, characterized by, The adhesive tape body has a thickness extending along an X direction and a width extending along a Y direction, and a through hole is formed through the adhesive tape body for the metal strip to pass through, and the through hole has a length extending along the Y direction, and the X direction is perpendicular to the Y direction.

2. The removable tab gum strip of claim 1, wherein, In the X direction, the thickness of the adhesive tape body on both sides of the through hole is consistent.

3. The removable tab gum strip of claim 1, wherein, The adhesive tape body is an integral structure, or the adhesive tape body comprises two sub-adhesive tapes, the sub-adhesive tapes have lengths extending along a Z direction, and one side of the sub-adhesive tapes along the X direction has two adhesive regions and a non-adhesive region; in the Z direction, the non-adhesive region is located between the two adhesive regions, the adhesive regions of the two sub-adhesive tapes are correspondingly bonded, the two non-adhesive regions are opposite to form the through hole, and the X direction, the Y direction and the Z direction are perpendicular to each other.

4. The removable tab gum strip of claim 3, wherein, The lengths of the two adhesive regions along the Z direction are consistent.

5. A lithium ion battery tab assembly tool for assembling the movable tab gasket of any one of claims 1 to 4 on a metal strip connected to a lithium ion cell, characterized in that, The lithium ion battery tab assembly tool comprises: a positioning mechanism for fixing a lithium ion battery cell; a first top sealing mechanism and a rack, the first top sealing mechanism is installed on the rack, and a top of the lithium ion battery on the positioning mechanism is opposite to one side of the first top sealing mechanism along a Y direction; a limiting mechanism, the limiting mechanism is installed on the positioning mechanism and located on one side of the first top sealing mechanism along an X direction towards the movable tab adhesive tape, the limiting mechanism is provided with two avoiding grooves for the metal strip to pass through, the two avoiding grooves are spaced apart along a Z direction, the width of the avoiding groove along the Z direction is smaller than the width of the movable tab adhesive tape sleeved on the metal strip, one side of the limiting mechanism towards the lithium ion battery cell is spaced apart from the top of the lithium ion battery cell, and one side of the movable tab adhesive tape along the Y direction is in contact with the limiting mechanism, and the Y direction and the Z direction are perpendicular to each other.

6. The lithium-ion battery tab assembly tool of claim 5, wherein, The limiting mechanism comprises a connecting part, a limiting part and a fastening bolt, the limiting part is fixedly connected with one side of the connecting part along the Z direction, the limiting part is provided with two avoiding grooves, the connecting part is provided with two adjusting long holes, the two adjusting long holes are spaced apart along the Z direction, the length of the adjusting long hole extends along the Y direction, the positioning mechanism is provided with a first fixing hole corresponding to the adjusting long hole, and the fastening bolt is threadedly screwed through the adjusting long hole and the first fixing hole.

7. The lithium-ion battery tab assembly tool of claim 6, wherein, One side of the avoiding groove away from the first top sealing mechanism along the X direction is an open structure.

8. The lithium-ion battery tab assembly tool of claim 6, wherein, The positioning mechanism comprises a positioning plate and a pressing plate arranged on one side of the positioning plate along the X direction, the pressing plate can press the lithium ion battery cell tightly on the positioning plate, the positioning plate is provided with the first fixing hole and a mounting hole; the first top sealing mechanism comprises a first base and a first top sealing head fixedly connected, the first base is located on the side of the positioning plate away from the pressing plate, the first top sealing head is located on the side of the first base facing the positioning plate, the first top sealing head passes through the mounting hole and contacts with the movable tab rubber strip, the limiting portion is located at one end of the mounting hole away from the first base along the X direction, and the first top sealing head is located between the limiting portion and the top of the lithium ion battery cell.

9. The lithium-ion battery tab assembly tool of claim 8, wherein, The first top sealing mechanism further comprises a supporting portion for supporting the metal strip, the supporting portion is fixed on the first base, and the limiting portion is provided with a through hole for the supporting portion to pass through along the X direction.

10. The lithium-ion battery tab assembly tool of claim 9, wherein, Further comprising a second top sealing mechanism, the second top sealing mechanism comprises a second base, a second top sealing head and a pressing portion fixedly connected, the second top sealing head and the pressing portion are located on the side of the second base facing the first top sealing mechanism, the second top sealing head faces the first top sealing head, and the pressing portion faces the supporting portion, and the pressing portion is used for pressing the metal strip on the supporting portion.

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