Unit sheet rubberizing mechanism and thermal composite laminating machine

Abstract

The utility model provides a unit sheet rubberizing mechanism and a thermal composite laminating machine. The unit sheet rubberizing mechanism comprises a bracket, a material belt roller, a rubber belt and a rubberizing assembly, the material belt roller is used for conveying the unit sheets; the adhesive tape comprises a first surface and a second surface which are oppositely arranged, the first surface is a bonding surface, and the second surface is a smooth surface; the adhesive tape sticking assembly is used for sticking a first surface of an adhesive tape to the surface of a unit sheet of a material belt; a unit piece rubberizing mechanism is additionally arranged before a thermal compounding Z-stack step, a driving part drives a vacuum roller to rotate, so that a rubber belt is attached to the surface of a corresponding unit piece, NG unit pieces cannot be bonded with other unit pieces, the problems of pole piece damage and powder falling caused in the separation process are avoided, secondary damage in the reworking process is reduced, and the working efficiency is improved. The technical problem of low efficiency of manually counting the tabs can be solved; in addition, the unit sheets are conveyed through the material belt roller, so that the machine is not stopped in the rubberizing process, other working procedures are prevented from being influenced, and the production efficiency is ensured.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery production technology, specifically to a unit cell adhesive bonding mechanism and a thermal composite stacking machine. Background Technology

[0002] With the advancement of modern technology, lithium-ion batteries are finding increasingly wider applications in daily life, being widely used in various digital products and new energy vehicles. Lithium-ion batteries mainly consist of a casing and a cell. Currently, in the manufacturing process of large lithium-ion batteries, a thermal lamination machine is typically used to assemble the positive and negative electrode sheets of the lithium-ion battery cell with the separator in a Z-shaped lamination process, forming the cell. Then, adhesive is applied to the tail of the cell for final fixation. However, in related technologies, if NG (non-conforming) cell sheets are found in the cell pack, rework is required. In practice, manual identification of the layer containing NG cell wafers is usually required, which is inefficient and wastes time. In addition, after the core package undergoes the Z-stack hot pressing process of the thermal lamination stacker, NG cell wafers may adhere to the other qualified cell wafers. Therefore, during the process of separating NG cell wafers from the other qualified cell wafers, electrode damage and powder shedding are likely to occur, leading to secondary damage during rework. At the same time, it is also easy to cause the thermal lamination Z-stack core package to be scrapped entirely after the NG cell wafers are removed, increasing production costs. Utility Model Content

[0003] The embodiments of this utility model provide a unit wafer adhesive application mechanism and a thermal lamination stacking machine, which can improve the technical problems of low rework efficiency of NG unit wafers and easy occurrence of electrode damage and powder shedding.

[0004] In a first aspect, embodiments of the present invention provide a unit sheet adhesive application mechanism, comprising:

[0005] support;

[0006] A material belt roller, which is rotatably connected to the bracket for feeding the material belt;

[0007] The tape includes a first side and a second side disposed opposite to each other, the first side being an adhesive side and the second side being a smooth side;

[0008] An adhesive applicator assembly for attaching the first side of the adhesive tape to the surface of a unit piece of the tape.

[0009] In one embodiment, the adhesive application assembly includes a vacuum roller and a drive member, the drive member being driven to the vacuum roller to rotate and to apply the first side of the adhesive tape to the surface of a unit sheet of the tape.

[0010] In one embodiment, the vacuum roller has a cavity inside, the cavity being used to connect to an exhaust device to discharge air from the cavity, and the surface of the vacuum roller has a plurality of adsorption holes communicating with the cavity.

[0011] In one embodiment, the plurality of adsorption holes are arranged in a matrix, and the area of ​​the plurality of adsorption holes occupies between 2 / 3 and 3 / 4 of the circumferential surface area of ​​the vacuum roller.

[0012] In one embodiment, a unit sheet adhesive applicator further includes an adhesive preparation assembly for providing the adhesive tape. The adhesive preparation assembly includes an adhesive roll, a guide roller, a first drive roller, a second drive roller, and the adhesive tape. The first drive roller and the second drive roller are arranged opposite to each other. The adhesive tape is mounted on the adhesive roll, and one end of the adhesive tape is wrapped around the guide roller and travels between the first drive roller and the second drive roller to the vacuum roller.

[0013] In one embodiment, a unit sheet adhesive applicator further includes a first guide plate and a second guide plate. The first guide plate and the second guide plate are both disposed on the side of the first drive roller and the second drive roller facing the vacuum roller. The first guide plate and the second guide plate are inclined and the distance between them gradually decreases, so as to guide the adhesive tape from between the first guide plate and the second guide plate to the vacuum roller.

[0014] In one embodiment, a unit sheet adhesive applicator further includes a cutter disposed between the first adhesive preparation assembly and the adhesive applicator assembly for cutting the adhesive tape.

[0015] In one embodiment, a unit sheet adhesive applicator further includes a traversing component connected to the vacuum roller for adjusting the distance between the vacuum roller and the strip roller.

[0016] In one embodiment, a unit sheet adhesive application mechanism further includes a pulley assembly, which includes a first synchronous pulley, a second synchronous pulley, and a synchronous belt. The first synchronous pulley is fixedly connected to the drive component, and the first synchronous pulley is connected to the second synchronous pulley via the synchronous belt to drive the second synchronous pulley to rotate synchronously. The second synchronous pulley is fixedly connected to the vacuum roller.

[0017] In one embodiment, the second surface is disposed facing the vacuum roller, and the vacuum roller is capable of adsorbing the second surface onto the surface of the vacuum roller.

[0018] Secondly, embodiments of this utility model provide a thermal lamination stacking machine, including a unit sheet adhesive application mechanism.

[0019] In one embodiment, there are two unit sheet adhesive application mechanisms, which are used to attach both sides of the same unit sheet of the material sheet to the first side of the adhesive tape.

[0020] The beneficial effects of the embodiments of this utility model are as follows:

[0021] In this embodiment of the invention, by adding a unit sheet adhesive application mechanism before the thermal lamination Z-stack step, when an NG unit sheet is detected, the adhesive side of the tape is attached to the surface of the corresponding unit sheet on the material strip via the adhesive application component. The smooth side of the tape faces away from the unit sheet. In the subsequent thermal lamination Z-stack step, the smooth side of the tape will not adhere to the other unit sheets on the material strip, thus preventing the NG unit sheets on the material strip from adhering to the other unit sheets. This ensures that the NG unit sheets on the material strip can be easily separated from the other unit sheets during subsequent patching processes, avoiding electrode damage and powder shedding caused by adhesion between the NG unit sheets and the other unit sheets on the material strip during separation. Therefore, it can reduce secondary damage to the NG unit sheets on the material strip during the fabrication and rework process, and also avoid the problem of scrapping the entire NG unit sheet after thermal lamination Z-stack core wrapping on the material strip. Furthermore, by attaching tape to the NG unit pieces on the material strip, production personnel can quickly identify the layer on the material strip where the NG unit pieces are located, without having to use manual dial gauges to identify the layer where the NG unit pieces are located, thus improving the technical problem of low efficiency of manual dial gauges.

[0022] Furthermore, in the embodiments of this utility model, by using a material belt roller to feed the unit sheet, the continuity between the adhesive application process and the subsequent thermal lamination Z-stack process can be achieved, that is, the machine can be stopped throughout the entire adhesive application process, thereby avoiding affecting the progress of other processes and ensuring production efficiency. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a three-dimensional schematic diagram of a unit sheet adhesive application mechanism provided in Embodiment 1 of this utility model;

[0025] Figure 2 This is a three-dimensional schematic diagram of the vacuum roller provided in Embodiment 1 of this utility model;

[0026] Figure 3This is a three-dimensional schematic diagram of a unit sheet adhesive application mechanism provided in Embodiment 2 of this utility model.

[0027] Figure 4 This is a three-dimensional schematic diagram of a unit sheet adhesive application mechanism provided in Embodiment 3 of this utility model.

[0028] Figure 5 This is a three-dimensional schematic diagram of a unit sheet adhesive application mechanism provided in Embodiment 4 of this utility model.

[0029] Figure Labels

[0030] 1. Belt roller;

[0031] 2. Adhesive tape;

[0032] 3. Adhesive application assembly; 31. Vacuum roller; 311. Cavity; 312. Adsorption hole; 313. Exhaust device; 32. Drive component; 33. Pulley assembly; 331. First synchronous pulley; 332. Second synchronous pulley; 333. Synchronous belt;

[0033] 4. Glue preparation assembly; 41. Glue roll preparation; 42. Guide roller; 43. First drive roller; 44. Second drive roller;

[0034] 5. First guide plate;

[0035] 6. Second guide plate;

[0036] 7. Cutting knife;

[0037] 8. Lateral movement component;

[0038] 9. Material belt. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model. In the present utility model, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0040] Reference Figure 1This application provides a unit sheet adhesive application mechanism, which includes a bracket (not shown in the figure), a material roller 1, an adhesive tape 2, and an adhesive application component 3.

[0041] The feed roller 1 is rotatably connected to the bracket for feeding the unit piece;

[0042] The tape 2 includes a first side and a second side disposed opposite to each other, the first side being an adhesive side and the second side being a smooth side;

[0043] The adhesive application component 3 is used to attach the first side of the adhesive tape 2 to the surface of the unit piece of the material tape 9.

[0044] In this embodiment of the invention, by adding a unit sheet adhesive application mechanism before the thermal lamination Z-stack step, when an NG unit sheet is detected, the adhesive side of the adhesive tape 2 is attached to the surface of the corresponding unit sheet on the material strip 9 via the adhesive application component 3. The smooth side of the adhesive tape 2 faces away from the unit sheet. In the subsequent thermal lamination Z-stack step, the smooth side of the adhesive tape 2 will not adhere to the other unit sheets on the material strip 9, thus preventing the NG unit sheets on the material strip from adhering to the other unit sheets. This ensures that the NG unit sheets on the material strip 9 can be easily separated from the other unit sheets on the material strip 9 during subsequent patching processes, avoiding electrode damage and powder shedding caused by the adhesion of NG unit sheets on the material strip 9 to the other unit sheets on the material strip 9 during the separation process. Therefore, it can reduce secondary damage to the NG unit sheets on the material strip 9 during the fabrication and rework process, and also avoid the problem of scrapping the entire NG unit sheet after thermal lamination Z-stack core wrapping on the material strip 9. Furthermore, by attaching tape 2 to the NG unit sheet on the material strip 9, production personnel can quickly identify the layer where the NG unit sheet is located on the material strip 9, that is, there is no need to identify the layer where the NG unit sheet is located by manually counting the tabs, thereby improving the technical problem of low efficiency of manual counting tabs.

[0045] Furthermore, in the embodiments of this utility model, the unit sheet is fed by the material belt roller 1, which enables continuity between the adhesive application process and the subsequent thermal lamination Z-stack process. That is, the machine can be stopped throughout the entire adhesive application process, thereby avoiding affecting the progress of other processes and ensuring production efficiency.

[0046] In some embodiments, refer to Figure 1The adhesive application assembly 3 includes a vacuum roller 31 and a drive component 32. The drive component 32 is driven to the vacuum roller 31 to rotate the vacuum roller 31 and attach the first side of the adhesive tape 2 to the surface of the unit sheet of the material strip 9. Therefore, compared to the traditional adhesive application method, the vacuum roller 31 ensures that when the adhesive tape 2 is adsorbed onto the vacuum roller 31, the vacuum roller 31 and the adhesive tape 2 are in close contact, preventing air bubbles from forming. This avoids air bubbles between the adhesive tape 2 and the unit sheet of the material strip 9 during the adhesive application process, ensuring complete adhesion between the adhesive tape 2 and the unit sheet of the material strip 9. This prevents other qualified unit sheets on the material strip 9 from developing marks or wrinkles due to the presence of air bubbles, thus preventing damage to the core package.

[0047] It is understood that in this embodiment, the driving component 32 can be a drive motor or a rotary cylinder, and the driving component 32 can also be set in different forms according to actual practical needs; in this embodiment of the utility model, the driving component 32 is preferably a drive motor. Compared with a rotary cylinder, the drive motor can generate faster and stronger rotation, has high efficiency, good precision, and less noise during use; at the same time, it can maintain long-term operation and facilitate daily maintenance.

[0048] In addition, the drive motor can achieve different speeds by simply adjusting the voltage and current, making adjustment convenient.

[0049] In some embodiments, refer to Figure 2 The vacuum roller 31 has a cavity 311 inside, which is used to connect to the exhaust device 313 to expel the air inside the cavity 311. The surface of the vacuum roller 31 has multiple adsorption holes 312 communicating with the cavity 311. When it is necessary to apply adhesive to the surface of the unit sheet of the material strip 9, the air inside the cavity 311 is first completely expelled through the exhaust device 313, so that the cavity 311 is in a vacuum state. At this time, the vacuum roller 31 can adsorb the second side of the adhesive strip 2 onto the surface of the vacuum roller 31, so that the first side of the adhesive strip 2 can be flatly attached to the surface of the unit sheet, ensuring that the entire core package will not have abnormal phenomena such as marks and wrinkles caused by adhesive application, thereby preventing damage to the core package.

[0050] In practical use, the exhaust device 313 can be a vacuum pump, a gas extractor, or other different types of exhaust devices 313 as needed. In the embodiments of this application, the exhaust device 313 is preferably a vacuum pump. Vacuum pumps can extract gas from containers more efficiently, achieving a higher vacuum level. They have high extraction efficiency and can meet the needs of various complex working environments, making them widely applicable and highly practical.

[0051] In some embodiments, refer to Figure 2 The plurality of adsorption holes 312 are arranged in a matrix, and the area of ​​the plurality of adsorption holes 312 occupies between 2 / 3 and 3 / 4 of the circumferential surface area of ​​the vacuum roller 31. This arrangement ensures that adsorption holes 312 are provided on most of the circumferential surface of the vacuum roller 31, but not on its entire circumferential surface. This guarantees sufficient adsorption of the tape 2 by the vacuum roller 31, preventing the tape 2 from falling off during the rotation of the vacuum roller 31. Simultaneously, it also prevents the tape 2 from failing to adhere to the unit sheet surface of the material strip 9 due to excessive adsorption by the vacuum roller 31, and also prevents the tape 2 from being adsorbed and carried away again by the vacuum roller 31 after being adhered to the unit sheet of the material strip 9. Therefore, this arrangement ensures that the tape 2 can be successfully adhered to the unit sheet surface of the material strip 9.

[0052] In this embodiment, the area of ​​the plurality of adsorption holes 312 preferably accounts for 2 / 3 of the circumferential surface area of ​​the vacuum roller 31.

[0053] In some embodiments, refer to Figure 1 A unit sheet adhesive applicator further includes an adhesive preparation assembly 4 for providing the adhesive tape 2. The adhesive preparation assembly 4 includes an adhesive roll 41, a guide roller 42, a first drive roller 43, a second drive roller 44, and the adhesive tape 2. The first drive roller 43 and the second drive roller 44 are arranged opposite to each other. The adhesive tape 2 is mounted on the adhesive roll 41. One end of the adhesive tape 2 is wrapped around the guide roller 42 and travels between the first drive roller 43 and the second drive roller 44 to the vacuum roller 31. Thus, one end of the tape 2 is mounted on the pre-rolled film 41 and can extend from the pre-rolled film 41. The tape 2 is wound around the guide roller 42, so that the tape 2 can be reversed after passing through the guide roller 42, and the tape 2 is kept in a straight state to avoid wrinkles in the tape 2 during the conveying process. Then the tape 2 can be carried from between the first drive roller 43 and the second drive roller 44 to the vacuum roller 31. The first drive roller 43 and the second drive roller 44 are arranged opposite to each other, so as to play a clamping and limiting effect on the tape 2, which can further ensure the straight state of the tape 2, so that the tape 2 remains straight throughout the glue preparation process until it is absorbed by the vacuum roller 31, which facilitates the subsequent glue application process.

[0054] It is understood that, in embodiments of this utility model, to prevent the adhesive tape 2 from failing to adhere to its first surface (the bonding surface) when passing through the guide roller 42, the first drive roller 43, and the second drive roller 44 during the adhesive preparation process, special treatment can be applied to the surfaces of the guide roller 42, the first drive roller 43, and the second drive roller 44. For example, an anti-stick coating can be sprayed onto the surfaces of the guide roller 42, the first drive roller 43, and the second drive roller 44, or polishing or etching processes can be performed on the surfaces of the guide roller 42, the first drive roller 43, and the second drive roller 44 to alter their physical and chemical properties. This special treatment allows a smooth film to form on the surfaces of the guide roller 42, the first drive roller 43, and the second drive roller 44, preventing strong interaction with the adhesive tape 2. This further reduces the adhesion between the adhesive tape 2 and the guide roller 42, the first drive roller 43, and the second drive roller 44, thereby preventing the adhesive tape 2 from failing.

[0055] In some embodiments, refer to Figure 3 A unit sheet adhesive applicator further includes a first guide plate 5 and a second guide plate 6. Both the first guide plate 5 and the second guide plate 6 are disposed on the side of the first drive roller 43 and the second drive roller 44 facing the vacuum roller 31. The first guide plate 5 and the second guide plate 6 are inclined and their spacing gradually decreases to guide the adhesive tape 2 from between the first guide plate 5 and the second guide plate 6 onto the vacuum roller 31. With this arrangement, after the adhesive tape 2 extends from between the first drive roller 43 and the second drive roller 44, it can fall between the first guide plate 5 and the second guide plate 6. Because the first guide plate 5 and the second guide plate 6 are inclined and their spacing gradually decreases, the adhesive tape 2 can smoothly travel between the first guide plate 5 and the second guide plate 6 until it is adsorbed by the vacuum roller 31. Therefore, the first guide plate 5 and the second guide plate 6 can guide the adhesive tape 2, thereby ensuring that the adhesive tape 2 can be smoothly adsorbed onto the vacuum roller 31, ensuring the continuity of the adhesive application process and achieving high adhesive application efficiency.

[0056] In some embodiments, refer to Figure 4 A unit sheet adhesive applicator also includes a cutter 7, which is disposed between the adhesive preparation assembly 4 and the adhesive applicator 3 for cutting the adhesive tape 2.

[0057] It should also be noted that before the adhesive is applied by the adhesive applicator, the cutter 7 can automatically cut the tape 2 according to the length of the NG unit piece in the tape 9, so that the length of the tape 2 is only sufficient to be attached to the surface of the NG unit piece in the tape 9, without affecting the other unit pieces, thus avoiding increasing the workload of the patching process.

[0058] Understandably, during the actual application process, the cutter 7 can cut the tape 2 according to the actual length of the NG unit piece in the tape 9, or the cut tape 2 can be cut to a length less than the actual length of the NG unit piece in the tape 9. That is, the NG unit piece in the tape 9 can be fully or partially covered, which can prevent the NG unit piece in the tape 9 from not adhering to the other unit pieces.

[0059] In some embodiments, refer to Figure 5 A unit sheet adhesive application mechanism further includes a lateral movement component 8, which is connected to the vacuum roller 31 and used to adjust the distance between the vacuum roller 31 and the material strip roller 1. Therefore, when the unit sheet passing through the material strip 9 on the material strip roller 1 is qualified, the lateral movement component 8 can adjust the distance between the vacuum roller 31 and the material strip roller 1, that is, the lateral movement component 8 drives the vacuum roller 31 to move away from the material strip roller 1, avoiding affecting the normal stacking process of the material strip 9; when the unit sheet passing through the material strip 9 on the material strip roller 1 is unqualified (NG), the lateral movement component 8 can adjust the distance between the vacuum roller 31 and the material strip roller 1, that is, the lateral movement component 8 drives the vacuum roller 31 to move towards the material strip roller 1, so that the gap between the vacuum roller 31 and the material strip roller 1 is only the sum of the thickness of the material strip 9 and the thickness of the adhesive tape 2, ensuring the adhesion effect of the adhesive tape 2. In some embodiments, refer to... Figures 1 to 5 A unit piece adhesive application mechanism further includes a pulley assembly 33, which includes a first synchronous pulley 331, a second synchronous pulley 332, and a synchronous belt 333. The first synchronous pulley 331 is fixedly connected to the driving member 32, and the first synchronous pulley 331 is connected to the second synchronous pulley 332 via the synchronous belt 333 to drive the second synchronous pulley 332 to rotate synchronously. The second synchronous pulley 332 is fixedly connected to the vacuum roller 31. Thus, during adhesive application, the driving member 32 drives the first synchronous pulley 331 to rotate. Since the first synchronous pulley 331 is connected to the second synchronous pulley 332 via the synchronous belt 333, the vacuum roller 31 fixed on the second synchronous pulley 332 can rotate synchronously, smoothly realizing the entire adhesive application process.

[0060] It should also be noted that in actual setup, the drive unit 32, the first synchronous pulley 331, the second synchronous pulley 332, the synchronous belt 333, and the vacuum roller 31 can all be placed in the same housing; therefore, by simply connecting the transverse component 8 to the housing, the vacuum roller 31 can be moved laterally to adjust the distance between the vacuum roller 31 and the material belt roller 1, thereby avoiding interference between the connection between the vacuum roller 31 and the pulley assembly 33 and the movement of the vacuum roller 31.

[0061] Furthermore, in actual setup, the film roll 41, guide roller 42, first drive roller 43, second drive roller 44, tape 2, drive component 32, first synchronous pulley 331, second synchronous pulley 332, synchronous belt 333, and vacuum roller 31 can all be housed in the same housing, and the lateral movement assembly 8 can be connected to the housing. This allows the vacuum roller 31 to move laterally, thereby adjusting the distance between the vacuum roller 31 and the feed belt roller 1. Thus, the film roll 41, guide roller 42, first drive roller 43, second drive roller 44, tape 2, drive component 32, first synchronous pulley 331, second synchronous pulley 332, synchronous belt 333, and vacuum roller 31 can all be housed in the same housing. The first synchronous pulley 331, the second synchronous pulley 332, the synchronous belt 333, and the vacuum roller 31 all move synchronously; thus, the glue preparation assembly 4 and the glue application assembly 3 can move synchronously, thereby ensuring that the positions of the glue preparation assembly 4 and the glue application assembly 3 remain relatively fixed, ensuring the consistency of movement between the glue preparation assembly 4 and the glue application assembly 3, avoiding the need to calibrate the relative positions of the glue preparation assembly 4 and the vacuum roller 31 when applying glue after adjusting the distance between the vacuum roller 31 and the material belt roller 1, ensuring the glue application effect on the NG unit pieces in the material belt 9, and also ensuring the glue application efficiency.

[0062] In some embodiments, the second surface is disposed facing the vacuum roller 31, and the vacuum roller 31 is capable of adsorbing the second surface onto the surface of the vacuum roller 31. Therefore, the smooth surface of the tape 2 is adsorbed onto the vacuum roller 31, while the adhesive surface of the tape 2 faces the feed roller 1, thus ensuring that the adhesive surface of the tape 2 can be smoothly attached to the surface of the NG unit sheet of the feed strip 9.

[0063] Secondly, this application also provides a thermal lamination machine, including a unit sheet adhesive application mechanism.

[0064] In some embodiments, the number of unit sheet adhesive application mechanisms is two, and the two unit sheet adhesive application mechanisms are used to attach both sides of the same unit sheet of the material sheet to the first side of the adhesive tape 2.

[0065] Understandably, since the NG unit pieces on the material strip 9 have two sides, in order to ensure that both sides of the NG unit pieces on the material strip 9 can be attached with tape 2, the thermal laminating machine is equipped with two unit piece adhesive application mechanisms, and the rotation directions of the material strip rollers 1 of the two unit piece adhesive application mechanisms are opposite. That is, when the material strip 9 passes through the first material strip roller 1, the first side of the material strip 9 faces the vacuum roller 31. That is, when the unit piece on the material strip 9 is detected to be an NG unit piece, the corresponding vacuum roller 31 applies adhesive to the first side of the NG unit piece; when the material strip 9 passes through the first material strip roller 1, the second side of the material strip 9 faces the vacuum roller 31. That is, when the unit piece on the material strip 9 is detected to be an NG unit piece, the corresponding vacuum roller 31 applies adhesive to the second side of the NG unit piece.

[0066] In summary, by setting up two unit sheet adhesive application mechanisms, it can be ensured that both sides of the NG unit sheet on the material strip 9 can be attached with tape 2, so that the two sides of the NG unit sheet will not stick to the other unit sheets during the subsequent thermal lamination Z-stack process. This further ensures that when manually separating the NG unit sheets during the patching stage, there will be no electrode damage or powder shedding during the separation process, reducing secondary damage during rework.

[0067] It is understood that, in the embodiments of this application, the unit piece adhesive device and the offline NG unit piece patching device can be used together to further improve the efficiency of manually removing and patching NG unit pieces on the strip 9, and further avoid the phenomenon that after the core package has undergone the thermal bonding Z-stack process, the presence of NG unit pieces on the strip 9, the NG unit pieces are bonded to the other unit pieces, and the separation process causes electrode damage or loss, resulting in the scrapping of the entire core package.

[0068] The embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A unit sheet taping mechanism characterized by, The adhesive tape is provided with a first surface and a second surface, the first surface is an adhesive surface, and the second surface is a smooth surface. The adhesive tape attaching assembly comprises a vacuum roller and a driving member, the driving member is drivingly connected with the vacuum roller to drive the vacuum roller to rotate and attach the first surface of the adhesive tape to the surface of the unit piece of the material tape. The vacuum roller is provided with a cavity for connecting an exhaust device to exhaust air in the cavity, and the surface of the vacuum roller is provided with a plurality of suction holes in communication with the cavity. The plurality of suction holes are arranged in a matrix, and the area of the plurality of suction holes accounts for 2 / 3-3 / 4 of the circumferential surface area of the vacuum roller. The adhesive tape attaching assembly further comprises a first guide plate and a second guide plate, the first guide plate and the second guide plate are arranged on the side of the first driving roller and the second driving roller facing the vacuum roller, and the first guide plate and the second guide plate are arranged obliquely and gradually decrease in distance to guide the adhesive tape to pass between the first guide plate and the second guide plate and then to the vacuum roller.

2. The unit sheet taping mechanism of claim 1, wherein, The adhesive tape attaching assembly further comprises a cutter arranged between the adhesive tape providing assembly and the adhesive tape attaching assembly to cut the adhesive tape.

3. The unit sheet taping mechanism of claim 2, wherein, The adhesive tape attaching assembly further comprises a horizontal movement assembly connected with the vacuum roller to adjust the distance between the vacuum roller and the material tape roller.

4. The unit sheet taping mechanism of claim 3, wherein, The adhesive tape attaching assembly further comprises a pulley assembly comprising a first synchronous pulley, a second synchronous pulley and a synchronous belt, the first synchronous pulley is fixedly connected with the driving member, the first synchronous pulley is connected with the second synchronous pulley through the synchronous belt to drive the second synchronous pulley to rotate synchronously, and the second synchronous pulley is fixedly connected with the vacuum roller.

5. The unit sheet taping mechanism according to any one of claims 2-4, wherein, The second surface is arranged towards the vacuum roller, and the vacuum roller can adsorb the second surface to the surface of the vacuum roller.

6. The unit sheet taping mechanism of claim 5, wherein, The adhesive tape attaching assembly comprises a unit piece adhesive tape attaching mechanism.

7. The unit sheet taping mechanism of claim 5, wherein The number of the unit piece adhesive tape attaching mechanisms is two, and the two unit piece adhesive tape attaching mechanisms are used to attach the two surfaces of the same unit piece of the material piece to the first surface of the adhesive tape.

8. The unit sheet taping mechanism of claim 2, wherein, ​ 9. The unit sheet taping mechanism of claim 2, wherein, ​ 10. The unit sheet taping mechanism of claim 2, wherein, ​ 11. A hot compounding lamination machine characterized by, ​ 12. The hot compounding stacker machine of claim 11, wherein, ​

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