Anti-sticking protective adhesive tape and pole roll assembly
By designing a protective tape with anti-stick properties on the electrode roll, the problem of adhesive sticking to the cutter during the cutting process was solved, resulting in high-efficiency production and improved economic benefits.
Patent Information
- Application Number
- CN202423048909.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-12-10
AI Technical Summary
During battery manufacturing, existing protective tapes are prone to leaving residue when cutting electrode rolls, leading to incomplete cutting or breakage of the electrode rolls, affecting production progress and causing economic losses.
Design a protective tape that prevents adhesive from sticking, comprising two coated areas and one uncoated area. The coated areas are located along the length of the roll, and the cut point is located within the uncoated area to prevent the cutter from picking up residual adhesive.
It effectively prevents the formation of electrode burrs, avoids adhesive sticking to the cutter, improves production progress, avoids economic losses, and prevents the electrode roll from breaking.
Smart Images
Figure CN223535015U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of battery manufacturing technology, and in particular to a protective tape for anti-sticking and an electrode roll assembly. Background Technology
[0002] In battery manufacturing, the slitting process is an essential step. During slitting, the electrode roll 1' is cut to obtain electrode sheets. Improper edge treatment of these electrode sheets can easily create burrs, increasing the risk of short circuits in the battery. For example... Figure 1 As shown, to prevent burrs, existing protective adhesive 2' needs to be applied to the cut point 11' of electrode roll 1'. However, after applying the existing protective adhesive 2', residual adhesive will frequently stick to the cutter when cutting electrode roll 1'. If cleaning is not timely and thorough, residual adhesive on the cutter will cause it to be unable to cut electrode roll 1', or even pose a quality risk of breaking electrode roll 1', which will not only affect the production schedule but also cause economic losses. Utility Model Content
[0003] One objective of this invention is to provide a protective tape that prevents adhesive residue from sticking to the cutter, thereby ensuring production progress and avoiding economic losses.
[0004] To achieve this objective, the present invention adopts the following technical solution:
[0005] A protective tape for resisting adhesive is provided for attaching to an electrode roll to prevent burrs from forming at the cut end of the electrode roll. The protective tape includes two coated areas and one uncoated area. Along a first direction, the uncoated area is located between the two coated areas. When the protective tape is attached to the electrode roll, the first direction is the length direction of the electrode roll, and the cut end is located within the uncoated area.
[0006] Optionally, the length direction of the non-adhesive-coated area is perpendicular to the first direction;
[0007] And / or, the length direction of both of the adhesive application areas is perpendicular to the first direction.
[0008] Optionally, along the first direction, the size of the non-adhesive area is x, and the overall size of the protective tape of the anti-adhesive is w, satisfying x > 1 / 3w.
[0009] Optionally, along the first direction, the overall size of the two adhesive areas is 2y, and the overall size of the protective tape of the anti-adhesive is w, satisfying 2y > 1 / 2w.
[0010] Optionally, the two adhesive application areas are the same size along the first direction.
[0011] Optionally, when the protective tape of the anti-adhesive is attached to the electrode roll, the cut point is located on the centerline of the non-adhesive area.
[0012] Optionally, when the protective tape of the anti-adhesive is pasted onto the electrode roll, the protective tape of the anti-adhesive protrudes from the electrode roll along the width direction of the electrode roll.
[0013] Optionally, when the protective tape of the anti-adhesive is pasted onto the electrode roll, both ends of the protective tape of the anti-adhesive protrude from the electrode roll along the width direction of the electrode roll.
[0014] Optionally, both of the adhesive application areas are rectangular regions;
[0015] And / or, the non-adhesive area is a rectangular region.
[0016] The second objective of this invention is to provide a polar roll assembly that can prevent residual adhesive from sticking to the cutter, thereby ensuring production progress and avoiding economic losses.
[0017] To achieve this objective, the present invention adopts the following technical solution:
[0018] An electrode roll assembly is provided, comprising an electrode roll and a protective tape for the aforementioned anti-adhesive, wherein the protective tape is adhered to the electrode roll to prevent burrs from forming at the cut point; and the cut point is located within the non-adhesive area.
[0019] The beneficial effects of this utility model are:
[0020] This invention provides a protective tape for resisting adhesive residue, used to adhere to electrode rolls to prevent burrs from forming at the cut points. The protective tape includes two coated areas and one uncoated area. Along a first direction, the uncoated area is located between the two coated areas. When the protective tape is adhered to the electrode roll, the first direction is the length direction of the electrode roll, and the cut point is located within the uncoated area. Using this protective tape effectively prevents burrs from forming on the cut electrode sheets while avoiding adhesive residue on the cutter, saving time on cleaning residual adhesive, and preventing the electrode roll from breaking due to residual adhesive on the cutter. This not only improves production speed but also avoids economic losses.
[0021] This invention also provides an electrode roll assembly, including an electrode roll and a protective tape for the aforementioned anti-adhesive. The protective tape is adhered to the electrode roll to prevent burrs from forming at the cut point; and the cut point is located in the non-adhesive area. This electrode roll assembly can prevent residual adhesive from adhering to the cutter, thereby ensuring production progress and avoiding economic losses. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the bonding of the electrode roll and the existing protective adhesive in the prior art;
[0023] Figure 2 This is a schematic diagram of the application of the protective tape for the electrode roll and the anti-adhesive provided in this embodiment of the utility model;
[0024] Figure 3 This is a schematic diagram of the structure of the protective tape for the anti-sticking adhesive provided in this embodiment of the utility model.
[0025] Figure 1 middle:
[0026] 1', Extreme roll; 11', Cut end; 2', Existing protective adhesive;
[0027] Figures 2-3 middle:
[0028] 1. End roll; 11. Cut end; 2. Protective tape for release adhesive; 21. Adhesive coating area; 22. Non-adhesive coating area. Detailed Implementation
[0029] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the drawings, not all of them.
[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections 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.
[0031] 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.
[0032] In the manufacturing process of secondary batteries, the slitting process is an essential step. During slitting, the electrode roll 1' is cut to obtain electrode sheets. Improper edge treatment of these electrode sheets can easily create burrs, increasing the risk of short circuits in the battery. For example... Figure 1 As shown, to prevent burrs, existing protective adhesive 2' needs to be applied to the cut point 11' of electrode roll 1'. However, after applying the existing protective adhesive 2', residual adhesive frequently sticks to the cutter when cutting electrode roll 1'. If cleaning is not timely and thorough, residual adhesive on the cutter will prevent it from cutting electrode roll 1', and may even lead to the risk of breaking electrode roll 1', affecting production progress and causing economic losses. To address the above problems, this embodiment provides a protective tape that prevents residual adhesive from sticking to the cutter, thereby ensuring production progress and avoiding economic losses.
[0033] like Figures 2-3 As shown, the protective tape 2 of the anti-adhesive in this embodiment is used to adhere to the electrode roll 1 to prevent burrs from forming at the cut 11 of the electrode roll 1. The protective tape 2 of the anti-adhesive includes two coated areas 21 and one uncoated area 22. Along a first direction, the uncoated area 22 is located between the two coated areas 21. When the protective tape 2 of the anti-adhesive is adhered to the electrode roll 1, the first direction is the length direction of the electrode roll 1, and the cut 11 is located within the uncoated area 22. Figure 2 The ab direction in the figure is the first direction, which is the length direction of polar roll 1.
[0034] The protective tape 2 with the above-mentioned anti-stick adhesive can prevent burrs from forming on the cut electrode sheets, and can also prevent the cutter from sticking with adhesive, saving time to clean up residual adhesive. Furthermore, it will not break the electrode roll 1 due to residual adhesive on the cutter, which can not only improve the production progress, but also avoid economic losses.
[0035] Optionally, the length direction of the non-adhesive area 22 is perpendicular to the first direction. Optionally, the length directions of both adhesive areas 21 are perpendicular to the first direction. That is, both the non-adhesive area 22 and the two adhesive areas 21 extend along the width direction of the electrode roll 1. This ensures that the non-adhesive area 22 covers the cut-off point 11 of the electrode roll 1 as much as possible, and that both adhesive areas 21 adhere tightly to both sides of the cut-off point 11 of the electrode roll 1, ensuring that the protective tape 2 of the anti-adhesive adhesive does not misalign with the electrode roll 1 when the cutter cuts the electrode roll 1. On the other hand, it minimizes the size of the protective tape 2 of the anti-adhesive adhesive along the first direction, reducing the contact area between the adhesive area 21 of the protective tape 2 and the electrode roll 1. This not only saves material but also prevents the effective area of the active material layer on the electrode sheet from being reduced by the protective tape 2 of the anti-adhesive adhesive, or reduces the amount of residual adhesive left when the protective tape 2 of the anti-adhesive adhesive is peeled off the electrode sheet. The protective tape 2 can be peeled off the electrode or left on the electrode.
[0036] Optionally, along the first direction, the size of the non-adhesive area 22 is x, and the overall size of the protective tape 2 for the release liner is w, satisfying x > 1 / 3w. That is, the width of the non-adhesive area 22 is large enough to prevent the adhesive area 21 from being located at the cut-off point 11 of the tape 1 when the protective tape 2 for the release liner is misaligned on the electrode roll 1, thereby ensuring the effectiveness of the protective tape 2 for the release liner.
[0037] Optionally, along the first direction, the overall size of the two adhesive application areas 21 is 2y, and the overall size of the protective tape 2 for the anti-adhesive is w, satisfying 2y > 1 / 2w. That is, it is necessary to ensure the width of the adhesive application area 21 to prevent the protective tape 2 for the anti-adhesive from detaching and becoming misaligned during the cutting process.
[0038] Optionally, along the first direction, the two adhesive application areas 21 have the same size, that is, the size of each adhesive application area 21 is y.
[0039] Optionally, when the protective tape 2 is applied to the electrode roll 1, the cut point 11 is located on the center line of the non-adhesive area 22 to minimize the risk of cutting in the adhesive area 21. Of course, the precision of the tape application and cutting equipment must be ensured to ensure that the cut point 11 is exactly located on the center line of the non-adhesive area 22.
[0040] Optionally, when the protective tape 2 is applied to the electrode roll 1, the protective tape 2 protrudes beyond the electrode roll 1 along its width. Alternatively, when the protective tape 2 is applied to the electrode roll 1, both ends of the protective tape 2 protrude beyond the electrode roll 1 along its width. This facilitates both applying the protective tape 2 to the electrode roll 1 and removing it from the electrode sheet after cutting.
[0041] Optionally, both adhesive application areas 21 are rectangular regions, and the non-adhesive application area 22 is also a rectangular region. Of course, in other embodiments, the non-adhesive application area 22 and the two adhesive application areas 21 can be set as regions of other shapes, which are not limited here.
[0042] This embodiment also provides an electrode roll assembly, which includes an electrode roll 1 and a protective tape 2 for the aforementioned anti-adhesive. The protective tape 2 is adhered to the electrode roll 1 to prevent burrs from forming at the cut end 11 of the electrode roll 1; and the cut end 11 of the electrode roll 1 is located within the non-adhesive area 22. This electrode roll assembly can prevent residual adhesive from adhering to the cutter, thereby ensuring production progress and avoiding economic losses.
[0043] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A protective tape for resisting adhesive (2), characterized in that, Used to be pasted on the electrode roll (1) to prevent burrs from being generated at the cut (11) of the electrode roll (1), the protective tape (2) of the anti-adhesive includes two coated areas (21) and one uncoated area (22). Along a first direction, the uncoated area (22) is located between the two coated areas (21). When the protective tape (2) of the anti-adhesive is pasted on the electrode roll (1), the first direction is the length direction of the electrode roll (1), and the cut (11) is located in the uncoated area (22).
2. The protective tape (2) for anti-adhesive as described in claim 1, characterized in that, The length direction of the non-adhesive area (22) is perpendicular to the first direction; And / or, the length direction of both of the adhesive application areas (21) is perpendicular to the first direction.
3. The protective tape (2) for anti-adhesive as described in claim 1, characterized in that, Along the first direction, the size of the non-adhesive area (22) is x, and the overall size of the protective tape (2) of the anti-adhesive is w, satisfying x > 1 / 3w.
4. The protective tape (2) for anti-adhesive as described in claim 1, characterized in that, Along the first direction, the overall size of the two adhesive areas (21) is 2y, and the overall size of the protective tape (2) of the anti-adhesive is w, satisfying 2y > 1 / 2w.
5. The protective tape (2) for anti-adhesive according to any one of claims 1-4, characterized in that, Along the first direction, the two adhesive application areas (21) are the same size.
6. The protective tape (2) for anti-adhesive according to any one of claims 1-4, characterized in that, When the protective tape (2) of the anti-adhesive is pasted on the pole roll (1), the cut point (11) is located on the center line of the non-adhesive area (22).
7. The protective tape (2) for anti-adhesive according to any one of claims 1-4, characterized in that, When the protective tape (2) of the anti-adhesive is pasted on the electrode roll (1), the protective tape (2) of the anti-adhesive protrudes from the electrode roll (1) along the width direction of the electrode roll (1).
8. The protective tape (2) for anti-adhesive as described in claim 7, characterized in that, When the protective tape (2) of the anti-adhesive is pasted on the electrode roll (1), both ends of the protective tape (2) of the anti-adhesive protrude from the electrode roll (1) along the width direction of the electrode roll (1).
9. The protective tape (2) for anti-adhesive according to any one of claims 1-4, characterized in that, Both of the adhesive application areas (21) are rectangular regions; And / or, the non-adhesive area (22) is a rectangular area.
10. A polar roll assembly, characterized in that, The device includes an electrode roll (1) and a protective tape of the anti-adhesive as described in any one of claims 1-9, wherein the protective tape (2) of the anti-adhesive is adhered to the electrode roll (1) to prevent burrs from forming at the cut (11); and the cut (11) is located within the non-adhesive area (22).