Gluing device

Abstract

The application relates to the field of battery cell production and manufacturing, and discloses a rubber pasting device for pasting rubber paper on the tab of a battery cell, wherein a connecting piece is arranged on the tab, and the connecting piece is arranged in a spaced manner with the battery cell; the rubber pasting device comprises a mounting frame, a rubber pasting assembly, a driving assembly and a pressing assembly; the driving assembly is fixed on the mounting frame and connected with the rubber pasting assembly, and the driving assembly can drive the rubber pasting assembly to move towards the tab; the pressing assembly comprises a telescopic piece and a pressing head; the telescopic piece can drive the pressing head to move towards the connecting piece; the pressing head is used for pressing the connecting piece; the rubber pasting assembly is used for adsorbing the rubber paper and pasting the rubber paper on the tab. The telescopic piece is arranged to drive the pressing head to move, so as to press on the connecting piece, the connecting piece is kept in a taut state during the rubber pasting process, the connecting piece is prevented from being in an inclined state during the rubber pasting process, manual inspection and rubber tearing are no longer needed, and the production efficiency and production quality of the battery cell are ensured.

Description

Technical Field

[0001] This invention relates to the field of battery cell manufacturing, and in particular to an adhesive application device. Background Technology

[0002] The manufacturing quality of battery cells has a significant impact on power batteries. The connection structure between battery cells usually involves welding the cell's tabs to the connecting pieces, and then applying adhesive to the surface of the tabs. The purpose of applying adhesive is mainly to prevent the tabs from contacting the top cover or casing after the cells are assembled and installed, which could cause a short circuit in the battery cell.

[0003] Since the tabs are made of soft material, the connecting piece may sometimes be tilted due to wrinkles or other factors before adhesive application. As the adhesive tape gradually adheres to the tab during application, the initial contact point with the tape in the tilted state is already fixed. Continued pressure will worsen the tilt, resulting in poor adhesive application and subsequent quality and safety issues such as bursts, tab cracking, or redundant tab insertion during laser welding. To avoid these problems, current methods involve manual inspection. If the above issues occur, the adhesive tape is manually peeled off, the connecting piece is smoothed, and the tape is reapplied. However, manual operation reduces production efficiency, and peeling off the tape can easily damage the battery cell, affecting its production quality. Summary of the Invention

[0004] The technical problem to be solved by this invention is:

[0005] When the adhesive on the connecting piece is applied at an angle, manually removing the adhesive affects production efficiency and can easily damage the battery cell, thus affecting the quality of battery cell production.

[0006] To solve the above-mentioned technical problems, the present invention provides an adhesive application device for attaching adhesive tape to the tabs of a battery cell, wherein the tabs have opposing adhesive application surfaces and soldering surfaces, and a connecting piece is provided on the soldering surface. The adhesive application device includes:

[0007] Mounting rack;

[0008] Adhesive-coated components;

[0009] A drive assembly, fixed to the mounting bracket and connected to the adhesive application assembly, is capable of driving the adhesive application assembly to move closer to the electrode tab; and

[0010] A pressing assembly, comprising a telescopic member connected to a mounting bracket and a pressing head connected to the telescopic member; the telescopic member is capable of driving the pressing head to move toward the connecting piece.

[0011] The pressure head is used to press against the connecting piece, and the adhesive assembly is used to absorb the adhesive paper and attach the adhesive paper to the tab.

[0012] In one embodiment, the pressure head is a flexible insulating component, and / or the pressure head is one of a polyetheretherketone pressure head, a polyoxymethylene pressure head, and a polyphenylene sulfide pressure head.

[0013] In one embodiment, the pressure head has a pressing surface; the pressing surface is planar and disposed at one end of the pressure head away from the telescopic member along a first direction, and the pressing surface is used to press against the connecting piece.

[0014] In one embodiment, the pressing surface is provided with a plurality of spaced strip-shaped anti-slip grooves, which are bent and extended.

[0015] In one embodiment, the telescopic member includes a cylinder body, a telescopic part, and a locking part; the cylinder body is connected to the mounting bracket, and the cylinder body is used to drive the telescopic part to move towards the connecting piece; one end of the telescopic part is inserted into the cylinder body, and the other end of the telescopic part extends towards the connecting piece; the locking part is located at the end of the telescopic part away from the cylinder body, and the locking part protrudes from the outer side wall of the telescopic part away from the telescopic part.

[0016] In one embodiment, the pressure head is provided with a locking groove, and the locking part is engaged in the locking groove to fit and fix the pressure head on the end of the telescopic part away from the cylinder body.

[0017] In one embodiment, the driving force of the telescopic member is 10N to 55.6N.

[0018] In one embodiment, the driving assembly includes a first driving member, a second driving member, a first connecting seat, and a second connecting seat; the first driving member is connected to the mounting bracket, and the first driving member is used to drive the second driving member to move toward the electrode tab; the second driving member connects the first connecting seat and the second connecting seat, and the second driving member is used to adjust the distance between the first connecting seat and the second connecting seat; the first connecting seat and the second connecting seat are used to connect the adhesive assembly.

[0019] In one embodiment, the adhesive application assembly includes a first adhesive suction head connected to the first connector and a second adhesive suction head connected to the second connector;

[0020] The first adhesive suction head includes a first pressure block connected to the first connecting seat, a second pressure block slidably connected to the first pressure block, and an elastic member elastically supported between the first pressure block and the second pressure block; the first pressure block and the second pressure block are used to absorb adhesive paper and attach the adhesive paper to the battery cell, the adhesive surface and part of the connecting piece.

[0021] In one embodiment, the first pressure block is provided with a chamfer; the chamfer is arc-shaped and is located at the junction of the end of the first pressure block away from the first connecting seat and the side away from the second pressure block.

[0022] Compared with existing technologies, the advantages of the above-mentioned adhesive application device are as follows:

[0023] By setting up a telescopic component to drive the pressure head to move and press it against the connecting piece, the connecting piece is kept taut during the adhesive application process, preventing it from tilting. This eliminates the need for manual inspection and adhesive removal, ensuring the production efficiency and quality of the battery cells.

[0024] By setting the pressure head as a flexible insulating component, the connecting piece is effectively protected during the pressing process, avoiding damage to the connecting piece and the electrode tab, and ensuring processing quality.

[0025] By setting anti-slip grooves on the pressure head, the roughness of the contact surface between the pressure head and the connecting plate is effectively improved, preventing the pressure head from slipping on the connecting plate during the pressing process, which would cause scratches on the connecting plate and ensure processing quality.

[0026] By setting up a snap-fit ​​structure between the snap-fit ​​part and the snap-fit ​​groove, the pressure head can be quickly replaced. The material or shape of the pressure head can be changed according to the user's needs, improving the adaptability of use. At the same time, when the pressure head is damaged, it can be replaced separately, reducing maintenance costs.

[0027] By setting the first connecting seat and the second connecting seat, the positions of the first and second adhesive suction heads can be pre-adjusted before processing to meet the adhesive application processing of tabs with different distances and sizes, thereby improving the adaptability of use.

[0028] By setting drive components on both sides of the extension plate, and connecting the drive components to the adhesive application components respectively, the adhesive application components include a first adhesive suction head and a second adhesive suction head, which effectively improves the processing efficiency of adhesive application.

[0029] By setting a chamfer on the first pressure block, scratches on the electrode tabs and connecting pieces are avoided during the adhesive application process, thus ensuring processing quality. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the adhesive applicator according to an embodiment of the present invention;

[0031] Figure 2 for Figure 1 Exploded view of the adhesive applicator;

[0032] Figure 3 for Figure 1 A exploded view of the adhesive applicator from another angle;

[0033] Figure 4 This is an exploded structural diagram of the first connecting seat;

[0034] Figure 5 This is an exploded structural diagram of the second connector.

[0035] Figure 6 This is an exploded view of the first adhesive suction head;

[0036] Figure 7 This is a schematic diagram of the mounting device under adhesive application conditions;

[0037] Figure 8 for Figure 7 A schematic diagram of the structure of part A in the middle circle;

[0038] Figure 9 This is a schematic diagram of the battery cell structure before adhesive is applied;

[0039] Figure 10 This is a schematic diagram of the battery cell structure after adhesive has been applied.

[0040] Figure 11 This is a schematic diagram of a partial structure of the pressure head;

[0041] Figure 12 This is a cross-sectional schematic diagram of the pressure head portion in an adhesive applicator according to an embodiment of the present invention.

[0042] The meanings of the numbers in the attached diagram are as follows:

[0043] 100. Adhesive application device;

[0044] 10. Mounting bracket; 11. Substrate; 12. Extension plate;

[0045] 20. Drive assembly; 21. First drive member; 211. First fixed part; 212. First movable part; 213. First connecting plate; 215. Guide strip; 216. Guide groove; 22. Second drive member; 221. Second fixed part; 222. Second movable part; 223. Second connecting plate; 23. First connecting seat; 231. Support block; 232. Connecting block; 233. Fixed block; 235. Adjustment hole; 236. First sliding hole; 24. Second connecting seat; 241. Engaging block; 242. Mounting block; 245. Second sliding hole;

[0046] 30. Adhesive application assembly; 31. First adhesive suction head; 311. First pressure block; 312. Second pressure block; 313. Elastic element; 314. Hook block; 315. Top pressure block; 316. Adsorption hole; 317. Slide groove; 318. Insertion groove; 319. Chamfer; 32. Second adhesive suction head;

[0047] 40. Pressing assembly; 41. Telescopic component; 411. Cylinder body; 412. Telescopic part; 42. Press head; 421. Anti-slip groove; 425. Pressing surface; 43. Connecting block;

[0048] 90. Battery cell; 91. Electrode tab; 92. Connecting piece; 95. Adhesive tape;

[0049] 200. Adhesive application device;

[0050] 41a. Telescopic component; 413. Engaging part; 42a. Pressure head; 426. Engaging groove. Detailed Implementation

[0051] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0052] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0053] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0054] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0055] It should be noted that, according to Figure 1 and Figure 2 As shown, in this embodiment of the invention, the X-axis and Y-axis are coplanar and perpendicular to each other, and the Z-axis is perpendicular to the common plane of the X and Y axes. For ease of explanation, the first direction is defined as the X-axis, the second direction as the Y-axis, and the third direction as the Z-axis. These three directions are mutually perpendicular.

[0056] It should be noted that, among them Figure 9 This is a schematic diagram of the battery cell 90 before adhesive is applied. Figure 10 This is a schematic diagram of the battery cell 90 after adhesive application. Two tabs 91 are typically provided on the same battery cell 90, corresponding to the positive and negative electrodes. During processing, connecting pieces 92 are welded and fixed to the tabs 91 of the same polarity on both battery cells 90. To prevent the tabs 91 from contacting the top cover or housing after the battery cell 90 is assembled and inserted into the casing, causing a short circuit, adhesive is applied to the tabs 91. The tabs have opposing adhesive surfaces and welding surfaces. Connecting pieces are provided on the welding surface, and adhesive tape is attached to the battery cell, the adhesive surface, and part of the connecting piece.

[0057] Please see Figures 1 to 11This is an adhesive applicator 100 according to a first embodiment of the present invention, used to attach adhesive tape 95 to the tab 91 of a battery cell 90. The tab 91 is connected to the battery cell 90, and a connecting piece 92 is provided on the tab 91, spaced apart from the battery cell 90. The adhesive applicator 100 includes a mounting frame 10, a drive assembly 20 connected to the mounting frame 10, an adhesive applicator 30 connected to the drive assembly 20, and a pressing assembly 40 connected to the mounting frame 10. The drive assembly 20 is fixed to the mounting frame 10 and connected to the adhesive applicator 30. The drive assembly 20 can drive the adhesive applicator 30 to move towards the tab 91, i.e., drive the adhesive applicator 30 to move along a first direction. The pressing assembly 40 includes a telescopic member 41 connected to the mounting frame 10 and a pressing head 42 connected to the telescopic member 41. The telescopic member 41 can drive the pressing head 42 to move towards the connecting piece 92, i.e., drive the pressing head 42 to move along the first direction. The pressure head 42 is used to press against the connecting piece 92, and the adhesive application component 30 is used to absorb the adhesive paper 95 and attach the adhesive paper 95 to the tab 91. The pressure head 42 presses against the connecting piece 92 to ensure that the connecting piece 92 is in a taut state during the adhesive application process, thereby preventing the connecting piece 92 from moving and avoiding the connecting piece 92 from tilting during the adhesive application process.

[0058] The connecting piece has a pressing area and a welding area. The pressure head is used to press against the pressing area of ​​the connecting piece, and the welding surface of the electrode tab is welded to the welding area of ​​the connecting piece. Furthermore, the pressing area and the welding area are located on the same side of the connecting piece.

[0059] Further, the mounting bracket 10 includes a base plate 11 and an extension plate 12 connected to the base plate 11. The base plate 11 is arranged in a straight plate shape and is used to connect and fix with external equipment to connect the adhesive applicator 100 to the external equipment. The extension plate 12 is also arranged in a straight plate shape and is perpendicular to the base plate 11. The extension plate 12 connects the drive assembly 20 and the pressing assembly 40. In this embodiment, the mounting bracket 10 is T-shaped. The drive assembly 20 is arranged on both sides of the extension plate 12 along a third direction. The adhesive applicator 30 is arranged in a one-to-one correspondence with the drive assembly 20, and the drive assembly 20 and the adhesive applicator 30 are symmetrically arranged about the extension plate 12. The pressing assembly 40 is arranged on both sides of the extension plate 12 along a second direction, and the pressing assemblies 40 on both sides are symmetrically arranged with respect to the extension plate 12.

[0060] Furthermore, the drive assembly 20 includes a first drive member 21, a second drive member 22, a first connecting seat 23, and a second connecting seat 24. The first drive member 21 is connected to the mounting bracket 10, and the first drive member 21 drives the second drive member 22 to move towards the electrode tab 91, that is, the first drive member 21 drives the second drive member 22 to move along a first direction. In this embodiment, the first drive member 21 includes a first fixed part 211, a first movable part 212, and a first connecting plate 213. The first fixing part 211 is rectangular and connected to the extension plate 12 of the mounting bracket 10. The first movable part 212 is slidably connected to the first fixing part 211. The first movable part 212 has a cylindrical structure and passes through the first fixing part 211. The first movable part 212 moves relative to the first fixing part 211 in a first direction. The first connecting plate 213 is connected to the first movable part 212 and moves with it. The first connecting plate 213 is used to install the second driving member 22. Furthermore, the first fixing part 211 and the first movable part 212 constitute a cylinder. The first connecting plate 213 is L-shaped, with one end connected to the first movable part 212 and the other end located on the side of the first fixing part 211 away from the extension plate 12. Furthermore, the first connecting plate 213 is provided with a guide strip 215, and the first fixing part 211 is provided with a guide groove 216. The guide strip 215 is an elongated strip extending along the first direction, and the guide strip 215 protrudes from the first connecting plate 213 toward the first fixing part 211. The guide groove 216 is an elongated strip extending along the first direction, and the guide groove 216 is located on the side of the first fixing part 211 away from the extension plate 12. The guide strip 215 is correspondingly slidably disposed in the guide groove 216 to guide the movement of the first connecting plate 213 relative to the first fixing part 211 and improve the stability of the movement.

[0061] Furthermore, the second driving member 22 connects the first connecting seat 23 and the second connecting seat 24. The second driving member 22 is used to adjust the distance between the first connecting seat 23 and the second connecting seat 24, that is, the second driving member 22 drives the first connecting seat 23 and the second connecting seat 24 to move relative to each other in a second direction. In this embodiment, the second driving member 22 includes a second fixed part 221, a second movable part 222, and a second connecting plate 223. The second fixed part 221 is rectangular and connected to the first connecting plate 213. The second fixed part 221 is located on the side of the first connecting plate 213 away from the first fixed part 211. The second movable part 222 is slidably connected to the second fixed part 221. The second movable part 222 is cylindrical and passes through the second fixed part 221. The second movable part 222 moves relative to the second fixed part 221 in a second direction. The second connecting plate 223 is connected to the second movable part 222 so as to move together with the second movable part 222. Furthermore, the second fixed part 221 and the second movable part 222 constitute a cylinder; the second connecting plate 223 is arranged in an L-shape, one end of the second connecting plate 223 is connected to the second movable part 222, and the other end of the second connecting plate 223 is located on the side of the second fixed part 221 away from the first connecting plate 213.

[0062] Further, the first connecting seat 23 and the second connecting seat 24 are used to connect the adhesive application assembly 30, wherein the first connecting seat 23 is connected to the second fixing part 221. In this embodiment, the first connecting seat 23 includes a support block 231, a connecting block 232 connected to the support block 231, and a fixing block 233 connected to the connecting block 232. The support block 231 is connected to the second fixing part 221 and is disposed at one end of the second fixing part 221 away from the second movable part 222. The support block 231 extends from the second fixing part 221 in a direction away from the second movable part 222. The support block 231 is provided with an adjustment hole 235, which is an elongated strip extending along the second direction and penetrates both sides of the support block 231 along the third direction. The fixing block 233 is L-shaped, with one end connected to the connecting block 232 and the other end connected to the adhesive assembly 30. The fixing block 233 has a first sliding hole 236 located at the connection point between the fixing block 233 and the connecting block 232. The first sliding hole 236 is elongated in a third direction and penetrates both sides of the end connecting the fixing block 233 and the connecting block 232 along the first direction. The connecting block 232 is a straight plate, with one end sliding within the adjusting hole 235 and the other end sliding within the first sliding hole 236.

[0063] Furthermore, the second connecting seat 24 is connected to the second connecting plate 223. In this embodiment, the second connecting seat 24 includes a connecting block 241 and a mounting block 242 connected to the connecting block 241. The connecting block 241 is arranged in a straight plate shape and is fixedly connected to the second connecting plate 223. The mounting block 242 is arranged in an L-shape, with one end connected to the connecting block 241 and the other end connected to the adhesive assembly 30. The mounting block 242 is provided with a second sliding hole 245, which is located at the connection position between the mounting block 242 and the connecting block 241. The second sliding hole 245 is an elongated strip extending in a third direction and passes through both sides of the end of the mounting block 242 connected to the connecting block 241 in a first direction. One end of the connecting block 241 is fixed to the second connecting plate 223, and the other end of the connecting block 241 slides in the second sliding hole 245.

[0064] Furthermore, the adhesive application assembly 30 includes a first adhesive suction head 31 and a second adhesive suction head 32. The first adhesive suction head 31 is connected to the first connecting seat 23 and is mounted on the fixing block 233. The first adhesive suction head 31 is adjusted in the second direction by moving the connecting block 232 relative to the supporting block 231, and the first adhesive suction head 31 is adjusted in the third direction by moving the fixing block 233 relative to the connecting block 232. The second suction head 32 is connected to the second connecting seat 24 and is mounted on the mounting block 242. The position of the second suction head 32 along the third direction can be adjusted through the second sliding hole 245. This allows for pre-adjustment of the positions of the first suction head 31 and the second suction head 32 before the adhesive application process, meeting the adhesive application requirements for different tab 91 spacing sizes and different cell 90 spacing sizes. Unlike the existing technology where one set of drive components can only adapt to the adhesive application size of one cell 90 specification, the first connecting seat 23 and the second connecting seat 24 enable pre-adjustment of the preset positions of the first suction head 31 and the second suction head 32, improving the adaptability of adhesive application. The structure and operation are simple and convenient, adapting to the use of different specifications of cell 90 and reducing adhesive application costs. Furthermore, the first adhesive suction head 31 is mounted on the second fixing part 221 of the second driving member 22 via the first connecting seat 23, and the second adhesive suction head 32 is mounted on the second connecting plate 223 of the second driving member 22 via the second connecting seat 24. The distance between the first adhesive suction head 31 and the second adhesive suction head 32 is adjusted by the second driving member 22 during the adhesive application process to solve the problem that the placement distance between the adhesive tapes 95 and the setting distance between the tabs 91 are not equal during the adhesive application process.

[0065] Further, the first adhesive suction head 31 includes a first pressing block 311, a second pressing block 312, and an elastic element 313. The first pressing block 311 is connected to the second driving member 22 and extends vertically along a first direction; the second pressing block 312 is slidably connected to the first pressing block 311 and extends vertically along the first direction, and is located on the side of the first pressing block 311 away from the extension plate 12; the elastic element 313 has a spiral structure and extends along the first direction, elastically supporting itself between the first pressing block 311 and the second pressing block 312. In this embodiment, both the first pressing block 311 and the second pressing block 312 have a hollow structure, and are used to absorb adhesive paper 95 and attach the adhesive paper 95 to the battery cell 90, the tab 91, and the connecting piece 92. The first pressing block 311 and the second pressing block 312 are provided with adsorption holes 316. The adsorption holes 316 are circular through holes and are connected to the hollow space inside. The adsorption holes 316 are located at the ends of the first pressing block 311 and the second pressing block 312 away from the second driving member 22 in the first direction, so as to adsorb and fix the adhesive paper 95 on the first pressing block 311 and the second pressing block 312 by suction adsorption, so as to ensure the completion of the adhesive application operation. The adsorption holes 316 are used to adsorb the adhesive paper 95 so as to attach the adhesive paper 95 to the tab 91. The adhesive paper 95 will be attached to the battery cell 90 and the connecting piece 92.

[0066] Furthermore, the first pressing block 311 is provided with a chamfer 319; the chamfer 319 is arc-shaped and is located at the joint position between the end of the first pressing block 311 away from the first connecting seat 23 and the side away from the second pressing block 312. The chamfer 319 is used to protect the tab 91 during the adhesive application process to avoid the first pressing block 311 scratching the tab 91 during the pressing process, thus ensuring the processing quality.

[0067] Furthermore, the first suction head 31 also includes a hook block 314, and the first pressing block 311 is provided with a groove 317. The groove 317 is located on the side of the first pressing block 311 near the second pressing block 312 and is elongated along the first direction. The cross-section of the groove 317 is T-shaped. The hook block 314 matches the shape of the groove 317 and is correspondingly slidably disposed in the groove 317 and connected and fixed to the second pressing block 312. The hook block 314 is slidably disposed in the groove 317 to guide the movement of the second pressing block 312 relative to the first pressing block 311 along the first direction. At the same time, the T-shaped structure limits the movement between the second pressing block 312 and the first pressing block 311, preventing the second pressing block 312 from separating from the first pressing block 311.

[0068] Furthermore, the second pressing block 312 is provided with an embedding groove 318, which is elongated along the first direction, and the elastic member 313 is correspondingly disposed in the embedding groove 318. The first pressing block 311 is provided with a top pressing block 315, which extends from the first pressing block 311 toward the direction close to the second pressing block 312. The top pressing block 315 seals the embedding groove 318 and is used to press and fix the elastic member 313 in the embedding groove 318. One end of the elastic member 313 abuts against the top pressing block 315, and the other end of the elastic member 313 abuts against the inner wall of the embedding groove 318. In this embodiment, both the top pressing block 315 and the embedding groove 318 are provided with positioning posts; the positioning posts are cylindrical in shape and extend along the first direction, and the elastic element 313 is correspondingly arranged around the outside of the positioning posts. The positioning posts are used to position the installation position of the elastic element 313.

[0069] Furthermore, the second suction head 32 is connected to the second movable part 222 to ensure that the movement of the second movable part 222 relative to the second fixed part 221 drives the second suction head 32 to move relative to the first suction head 31. Specifically, the second suction head 32 has the same structure as the first suction head 31, and the structure of the second suction head 32 will not be described in detail here.

[0070] Furthermore, the telescopic member 41 extends along the first direction and is connected to the extension plate 12. The telescopic member 41 is disposed on both sides of the extension plate 12 along the second direction. The telescopic member 41 is used to drive the pressure head 42 to move along the first direction to ensure that the pressure head 42 presses against the connecting piece 92.

[0071] In one embodiment, the driving force of the telescopic member 41 is 10N to 55.6N. Specifically, the telescopic member 41 drives the pressure head 42 to apply pressure to the connecting piece 92. The pressure of the pressure head 42 against the connecting piece 92 is 10N to 55.6N, so that the pressure head can fix the connecting piece and further fix the electrode tab, thereby facilitating the application of adhesive to the electrode tab by the adhesive applicator. The pressure applied by the telescopic member 41 to the connecting piece 92 by the pressure head 42 is the first pressure. The driving assembly 20 applies pressure to the adhesive applicator 30 during the application of adhesive to the electrode tab 91. The pressure of the adhesive applicator 30 against the electrode tab 91 is not greater than 100.5N. The pressure applied by the driving assembly 20 to the adhesive applicator 30 is the second pressure. It can be understood that the second pressure is the driving force of the first driving member 21 driving the adhesive applicator 30 to move in the first direction.

[0072] Furthermore, the telescopic component 41 includes a cylinder body 411 and a telescopic portion 412. The cylinder body 411 is connected to the mounting bracket 10 and has a hollow columnar structure. The cylinder body 411 is connected to an external air pressure source and is used to drive the telescopic portion 412 to move towards the connecting piece 92, that is, the cylinder body 411 drives the telescopic portion 412 to move along a first direction. The telescopic portion 412 is elongated and extends along the first direction. One end of the telescopic portion 412 is inserted into the cylinder body 411, and the other end of the telescopic portion 412 extends towards the connecting piece 92. The telescopic portion 412 is slidably connected to the cylinder body 411. In this embodiment, the telescopic component 41 is a cylinder.

[0073] Furthermore, the pressure head 42 is located at the end of the telescopic part 412 away from the cylinder body 411. The pressure head 42 is used to press against the connecting piece 92 to ensure that the connecting piece 92 is in a taut state during the adhesive application process, preventing the connecting piece 92 and the tab 91 from moving during adhesive application. In this embodiment, the pressure head 42 is a flexible insulating component, and the pressure head 42 is one of the following: urethane pressure head, silicone pressure head, polyetheretherketone pressure head, polyurethane pressure head, polyoxymethylene pressure head, and polyphenylene sulfide pressure head. Understandably, the shape of the pressure head 42 is cylindrical, frustum-shaped, square, or spherical; the pressure head 42 is connected and fixed to the telescopic part 41 by adhesive or welding.

[0074] Furthermore, the pressure head 42 has a pressing surface 425. This pressing surface is planar and disposed at the end of the pressure head 42 away from the telescopic member along the first direction. The pressing surface 425 is used to press against the connecting piece 92. The planar design increases the contact area between the pressure head 42 and the connecting piece 92, resulting in less pressure on the connecting piece 92 under the same applied pressure, thus preventing damage to the connecting piece 92. In this embodiment, the pressing surface 425 has multiple spaced strip-shaped anti-slip grooves 421. The anti-slip grooves 421 are bent and extended, used to improve the surface roughness of the contact surface between the pressure head 42 and the connecting piece 92, preventing the pressure head 42 from slipping on the connecting piece 92 during the pressing process, thus avoiding scratches on the connecting piece 92 and ensuring processing quality. Furthermore, the anti-slip groove 421 is a continuous Z-shaped sawtooth adhesive setting, and the anti-slip groove 421 is arranged at intervals on the pressure surface 425. The continuous Z-shaped structure increases the friction resistance coefficient of the pressure surface 425 in all directions, avoids the pressure head 42 from slipping relative to the connecting piece 92 in all directions, and further ensures the processing quality.

[0075] Furthermore, the anti-slip grooves 421 on the pressure surface 425 can also be in the form of continuous S-shaped, V-shaped, or straight-line structures.

[0076] Furthermore, the pressing assembly 40 also includes a connecting block 43, which is disposed between the telescopic member 41 and the extension plate 12. One end of the connecting block 43 is connected to the telescopic member 41, and the other end of the connecting block 43 is connected to the extension plate 12. The connecting block 43 is used to fix the telescopic member 41 to the extension plate 12.

[0077] The working process of this invention is as follows: In the preparation stage, the position of the first adhesive suction head 31 along the second direction is adjusted by adjusting the adjustment hole 235 to adjust the distance between the first adhesive suction head 31 and the second adhesive suction head 32 to meet the distance between the tabs 91; the position of the first adhesive suction head 31 along the third direction is adjusted by adjusting the first sliding hole 236, and the position of the second adhesive suction head 32 along the third direction is adjusted by adjusting the second sliding hole 245 to meet the setting distance between the battery cells 90. During the adhesive application stage, the distance between the first adhesive suction head 31 and the second adhesive suction head 32 is adjusted by the second driving component 22 to ensure that the first adhesive suction head 31 and the second adhesive suction head 32 simultaneously adsorb the adhesive paper 95. Then, the adhesive application device 100 is moved above the battery cell 90, and the pressure head 42 is driven by the telescopic component 41 to move closer to the connecting piece 92, so that the pressure head 42 presses against the connecting piece 92, making the connecting piece 92 taut. The distance between the first adhesive suction head 31 and the second adhesive suction head 32 is then adjusted by the second driving component 22 to ensure that the first adhesive suction head 31 adsorbs the adhesive paper 95 simultaneously. The positions of the first adhesive suction head 31 and the second adhesive suction head 32 correspond to those of the electrode tab 91. The first driving member 21 drives the first adhesive suction head 31 and the second adhesive suction head 32 to press onto the battery cell 90 and the electrode tab 91, so as to attach the adsorbed adhesive paper 95 onto the electrode tab 91. After the attachment is completed, the first driving member 21 drives the first adhesive suction head 31 and the second adhesive suction head 32 to move away from the battery cell 90. Then, the telescopic member 41 drives the pressing head 42 to move away from the connecting piece 92, thus completing one adhesive application operation. Repeating the above adhesive application operation realizes automated continuous production.

[0078] In summary, the present invention provides an adhesive applicator 100, which drives the pressure head 42 to move by setting the telescopic member 41 to press against the connecting piece 92, ensuring that the connecting piece 92 is in a taut state during the adhesive application process, avoiding the connecting piece 92 from tilting during the adhesive application process, thereby eliminating the need for manual inspection and adhesive removal, and ensuring the production efficiency and quality of the battery cell 90.

[0079] By setting the pressure head 42 as a flexible insulating component, the connecting piece 92 is effectively protected during the pressing process, avoiding damage to the connecting piece 92 and the tab 91, and ensuring processing quality.

[0080] By setting anti-slip grooves 421 on the pressure head 42, the roughness of the contact surface between the pressure head 42 and the connecting piece 92 is effectively improved, preventing the pressure head 42 from slipping on the connecting piece 92 during the pressing process, which would cause the connecting piece 92 to be scratched and ensure the processing quality.

[0081] By setting the first connecting seat 23 and the second connecting seat 24, the positions of the first suction head 31 and the second suction head 32 can be pre-adjusted before processing to meet the adhesive application processing of the tabs 91 with different distance dimensions and improve the adaptability of use.

[0082] By setting drive components 20 on both sides of the extension plate 12, the drive components 20 are respectively connected to the adhesive application components 30, and the same adhesive application component 30 includes a first adhesive suction head 31 and a second adhesive suction head 32, the processing efficiency of adhesive application is effectively improved.

[0083] By setting a chamfer 319 on the first pressure block 311, scratches on the tab 91 and connecting piece 92 are avoided during the adhesive application process, thus ensuring processing quality.

[0084] Please see Figure 12 This is an adhesive applicator 200 according to the second embodiment of the present invention. The difference between this adhesive applicator 200 and the adhesive applicator 100 in the first embodiment is that the telescopic member 41a in this adhesive applicator 200 further includes a locking portion 413. The locking portion 413 is disposed at the end of the telescopic member 412 away from the cylinder portion 411, and is annular in shape, protruding from the outer side wall of the telescopic member 412 in a direction away from the telescopic member 412. The pressure head 42a is provided with a locking groove 426, the shape of which corresponds to the locking portion 413. The locking portion 413 is engaged within the locking groove 426 to sleeve and fix the pressure head 42a onto the end of the telescopic member 412 away from the cylinder portion 411.

[0085] In this embodiment, the adhesive applicator uses the locking part 413 and the locking groove 426 to lock the pressure head 42a onto the telescopic member 41a, enabling quick replacement of the pressure head 42a. The material or shape of the pressure head 42a can be changed according to the user's needs, improving its adaptability. At the same time, when the pressure head 42a is damaged, it can be replaced separately, reducing maintenance costs.

[0086] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0087] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A taping device (100) for attaching a tape (95) to a tab (91) of a battery cell (90), wherein, The tab (91) has opposite adhesive surfaces and welding surfaces, and the welding surfaces are provided with connecting pieces (92), characterized in that the adhesive device (100) comprises: a mounting frame (10); an adhesive assembly (30); a driving assembly (20) fixed on the mounting frame (10) and connected with the adhesive assembly (30), the driving assembly (20) being capable of driving the adhesive assembly (30) to move towards the tab (91); and a pressing assembly (40) comprising a telescopic member (41) connected with the mounting frame (10) and a pressing head (42) connected with the telescopic member (41), the telescopic member (41) being capable of driving the pressing head (42) to move towards the connecting piece (92). The pressing head (42) is used for pressing the connecting piece (92), and the adhesive assembly (30) is used for adsorbing the adhesive paper (95) and attaching the adhesive paper (95) on the tab.

2. The taping device (100) according to claim 1, characterized in that The pressing head (42) is a flexible insulating member; and / or the pressing head (42) is one of a polyether ether ketone pressing head, a polyoxymethylene pressing head and a polyphenylene sulfide pressing head.

3. The taping device (100) according to claim 1, characterized in that The pressing head (42) has a pressing surface (425) arranged in a plane at one end of the pressing head (42) away from the telescopic member (41) in a first direction, and the pressing surface (425) is used for pressing the connecting piece (92).

4. The taping device (100) according to claim 3, characterized in that The pressing surface (425) is provided with a plurality of spaced strip-shaped anti-skid grooves (421), and the anti-skid grooves are arranged in a bent manner.

5. The taping device (100) according to claim 1, characterized in that The telescopic member (41) comprises a cylinder portion (411), a telescopic portion (412) and a clamping portion (413), the cylinder portion (411) is connected with the mounting frame (10), the cylinder portion (411) is used for driving the telescopic portion (412) to move towards the connecting piece (92), one end of the telescopic portion (412) is inserted into the cylinder portion (411), the other end of the telescopic portion (412) extends towards the connecting piece (92), and the clamping portion (413) is arranged at one end of the telescopic portion (412) away from the cylinder portion (411), and the clamping portion (413) is arranged in a protruding manner from the outer wall of the telescopic portion (412) away from the telescopic portion (412).

6. The taping device (100) according to claim 5, characterized in that The pressing head (42) is provided with a clamping groove (426), and the clamping portion (413) is clamped in the clamping groove (426) to sleeve and fix the pressing head (42) at one end of the telescopic portion (412) away from the cylinder portion (411).

7. The taping device (100) according to any one of claims 1 to 6, characterized in that The driving force of the telescopic member (41) is 10N to 55.6N.

8. The taping device (100) of claim 1, wherein, The driving assembly (20) comprises a first driving member (21), a second driving member (22), a first connecting seat (23) and a second connecting seat (24); the first driving member (21) is connected with the mounting rack (10), and the first driving member (21) is used for driving the second driving member (22) to move towards the direction close to the tab (91); the second driving member (22) connects the first connecting seat (23) and the second connecting seat (24), and the second driving member (22) is used for adjusting the distance between the first connecting seat (23) and the second connecting seat (24); the first connecting seat (23) and the second connecting seat (24) are used for connecting the rubberizing assembly (30).

9. The taping device (100) according to claim 8, characterized in that The rubberizing assembly (30) comprises a first rubberizing head (31) connected with the first connecting seat (23) and a second rubberizing head (32) connected with the second connecting seat (24). The first rubberizing head (31) comprises a first pressing block (311) connected with the first connecting seat (23), a second pressing block (312) slidingly connected on the first pressing block (311), and an elastic member (313) elastically supported between the first pressing block (311) and the second pressing block (312); the first pressing block (311) and the second pressing block (312) are used for adsorbing rubber paper (95) and attaching the rubber paper (95) on the battery cell (90), the rubberizing surface and part of the connecting sheet (92).

10. The taping device (100) according to claim 9, characterized in that The first pressing block (311) is provided with a chamfer (319); the chamfer (319) is in an arc shape, and the chamfer (319) is arranged at the joint position of one end of the first pressing block (311) away from the first connecting seat (23) and the side of the first pressing block (311) away from the second pressing block (312).

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