Adhesive tape, battery and electric appliance
Patent Information
- Application Number
- CN202522473363.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-21
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-11-21
AI Technical Summary
[0006]本申请的目的是在于提供一种贴覆胶纸、电池及用电设备，从而解决了传统人工在贴胶纸时，定位困难经常无法一步到位，每一次贴偏都需撕下来调整，大大降低贴胶效率，严重时可能对电芯铝塑膜表面造成破坏的问题
本申请的贴覆胶纸贴覆于垂直的顶封边和极耳时，首先，带着第一离型膜沿背刀线反折180°，使得第一离型膜（第一部分）的空缺区域与第二胶层相粘接。之后，撕掉第一胶层上的第一离型膜（第二部分），将第二部分的第一胶层暴露出来，贴覆顶封边。因为，第一离型膜与第二胶层的离型力大于第一离型膜与第一胶层的离型力，这样便不会造成贴覆胶纸的反离型，而且由于第一离型膜有一定的硬挺度（存在的第一部分），还可使贴覆胶纸更容易定位，定位时将反折后的贴覆胶纸的根部与顶封边和极耳的连接处对齐作为基准线，然后定位抚平，粘接至顶封边上。
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Figure CN224832559U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of battery technology, and in particular to an adhesive tape, a battery, and an electrical device. Background Technology
[0002] In the manufacturing and repair of portable electronic devices, especially smartphone batteries, the fixation and protection of battery components are crucial, requiring the use of various adhesive tapes. In traditional battery structures, after the cell tabs are welded to the nickel sheet of the battery protection board, a top sealing tape is needed to isolate the tabs from the cell top seal to prevent short circuits. Because the tabs and cell top seal are perpendicular after welding, it is impossible to use equipment to apply the tape; it must be applied manually.
[0003] When manually applying adhesive tape, one hand needs to hold the battery and the other hand needs to hold a whole sheet of tape to cover it. The cross-sectional area of the tape covers both the top seal of the cell and the tabs. However, the following problems exist: 1. Relying entirely on employees' eyesight for left-right and up-down positioning requires considering too many reference points, making positioning difficult.
[0004] 2. Traditional adhesive tapes are often difficult to position properly after the release film is peeled off, as the tape itself is soft and sticky and difficult to position. Each time the tape is misaligned, it needs to be peeled off and adjusted, which greatly reduces the efficiency of tape application.
[0005] In this case, the adhesive tape needs to be peeled off and adjusted every time it is applied off-center. The constant adjustment will often cause the adhesive tape to be scrapped, and in severe cases, it may damage the surface of the aluminum-plastic film of the battery cell. Utility Model Content
[0006] The purpose of this application is to provide a method for applying adhesive tape, batteries, and electrical devices, thereby solving the problem that when applying adhesive tape manually, positioning is difficult and often cannot be done in one step. Each time the tape is misaligned, it needs to be peeled off and adjusted, which greatly reduces the efficiency of applying adhesive tape and may damage the surface of the aluminum-plastic film of the battery cell in severe cases.
[0007] This application provides a bonding tape having a thickness direction. The bonding tape includes a first release film, a first adhesive layer, and an insulating layer sequentially disposed along the thickness direction. The first release film covers the first adhesive layer and the insulating layer, and the insulating layer covers the first adhesive layer. The first release film has a back slit line dividing it into a first part and a second part. The bonding tape is foldable along the back slit line. The first part has a missing area and a non-missing area, and the first adhesive layer and the insulating layer are disposed on the non-missing area. The second part has the first adhesive layer and the insulating layer, and the insulating layer of the second part has a second adhesive layer disposed on it. The second adhesive layer corresponds to the missing area on the first part, and the release force between the first release film and the second adhesive layer is greater than the release force between the first release film and the first adhesive layer.
[0008] In any of the above technical solutions, further, in the thickness direction, the insulating layer and the first adhesive layer are overlapped.
[0009] In any of the above technical solutions, the adhesive tape further has a length direction perpendicular to the thickness direction; in the length direction, the two ends of the insulating layer on the second part protrude from the insulating layer on the first part, and the second adhesive layer is provided at both ends of the insulating layer on the second part.
[0010] In any of the above technical solutions, the adhesive paper further has a width direction perpendicular to the thickness direction; the first part and the second part are symmetrically arranged about the back knife line; in the width direction, the insulating layer on the first part and the insulating layer on the second part are of equal size; a dummy knife line is provided between the insulating layer on the first part and the insulating layer on the second part, and in the thickness direction, the back knife line and the dummy knife line overlap.
[0011] In any of the above technical solutions, further, there is a gap between the edge of the first adhesive layer on the first part and the edge of the first part, and there is a gap between the edge of the first adhesive layer on the second part and the edge of the second part.
[0012] In any of the above technical solutions, the insulating layer is further described as a PI layer.
[0013] In any of the above technical solutions, the second adhesive layer is further defined as a PSA layer.
[0014] In any of the above technical solutions, the adhesive tape further includes a second release film, which is bonded to the second adhesive layer, and the first release film and the second release film are overlapped in the thickness direction; the release force between the second release film and the second adhesive layer is less than the release force between the first release film and the first adhesive layer.
[0015] According to a second aspect of this application, a battery is provided, including the adhesive tape as described above, the battery further including a top sealing edge and a tab; the tab extends from the top sealing edge and is perpendicular to the top sealing edge; a first adhesive layer on the second portion is bonded to the top sealing edge, and a first adhesive layer on the first portion is bonded to the tab.
[0016] According to a third aspect of this application, an electrical device is provided, including the battery as described above.
[0017] The adhesive tape of this application includes a first release film, a first adhesive layer, and an insulating layer arranged sequentially along the thickness direction. The first release film covers the first adhesive layer and the insulating layer, and the insulating layer covers the first adhesive layer. The first release film has a back slit line dividing it into a first part and a second part, and the adhesive tape can be folded along the back slit line. The first part has a missing area and a non-missing area, and the non-missing area has the first adhesive layer and insulating layer. The second part has the first adhesive layer and insulating layer, and the insulating layer of the second part has a second adhesive layer. The second adhesive layer corresponds to the missing area in the first part, and the release force between the first release film and the second adhesive layer is greater than the release force between the first release film and the first adhesive layer.
[0018] Based on the above technical features, the beneficial effects of this application are as follows: When the adhesive tape of this application is applied to the vertical top seal edge and tab, firstly, the first release film is folded back 180° along the back scissor line, so that the empty area of the first release film (first part) is bonded to the second adhesive layer. Then, the first release film (second part) on the first adhesive layer is peeled off, exposing the second part of the first adhesive layer, and the top seal edge is then applied. Because the release force between the first release film and the second adhesive layer is greater than the release force between the first release film and the first adhesive layer, reverse release of the adhesive tape is avoided. Furthermore, due to the certain stiffness of the first release film (the existing first part), the adhesive tape is easier to position. During positioning, the root of the folded adhesive tape is aligned with the connection point between the top seal edge and the tab as a reference line, then positioned, smoothed, and bonded to the top seal edge.
[0019] Next, peel off the first release film (first part) on the first adhesive layer. The first adhesive layer of the first part will be exposed. Since the adhesive paper without the second adhesive layer is not fixed by the second adhesive layer, the first adhesive layer and the insulating layer on the first part will pop up. There is no need to peel it off manually. Just smooth out the adhesive paper and stick it to the tab.
[0020] As described above, when applying the adhesive tape of this application to the vertical top seal and tab, the entire sheet of adhesive tape is first folded 180° to form a folded half of the adhesive tape. This half-fold is easier to position. During positioning, the root of the folded half-fold is aligned with the connection point between the top seal and the tab as a reference line. Then, it is positioned, smoothed, and adhered to the top seal. Afterward, the first release film (first part) on the first adhesive layer is peeled off. The first adhesive layer and insulating layer on the first part will spring up, eliminating the need for manual peeling. The adhesive tape is then simply smoothed and adhered to the tab.
[0021] Compared to existing technologies, this application starts from the design of the adhesive tape structure. Through a new adhesive tape structure design, the adhesive tape structure for vertical surfaces is optimized, and the positioning is accurate during application. This avoids the problem of repeatedly tearing off and adjusting the tape, thus preventing increased costs. It also solves the problems of high waste rate, low efficiency, and low yield of traditional adhesive tape, thereby improving production yield and increasing UPH.
[0022] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description
[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0024] Figure 1 A schematic diagram showing the structure of the adhesive tape in its initial state according to an embodiment of this application; Figure 2 Show Figure 1 A schematic diagram of the structure after folding back 180°; Figure 3 Show Figure 1 A schematic diagram of the structure after removing the first and second release films; Figure 4 Show Figure 1 Cross-sectional view of the location of the second adhesive layer.
[0025] Icons: 100 - First release film; 101 - First part; 102 - Second part; 200 - First adhesive layer; 300 - Insulating layer; 400 - Second adhesive layer; 500 - Second release film; 600 - Back knife line; 700 - Dummy knife line; X - Length direction, Y - Width direction, Z - Thickness direction. Detailed Implementation
[0026] The following detailed embodiments are provided to help the reader gain a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.
[0027] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.
[0028] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.
[0029] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.
[0030] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.
[0031] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relation terms used herein will be interpreted accordingly.
[0032] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.
[0033] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.
[0034] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.
[0035] The first aspect of this application provides an adhesive tape that solves the problem that when applying adhesive tape manually, positioning is often difficult and cannot be done in one step. Each time the tape is misaligned, it needs to be peeled off and adjusted, which greatly reduces the efficiency of applying adhesive tape and may damage the surface of the aluminum-plastic film of the battery cell in severe cases.
[0036] The following reference Figures 1 to 4 This application describes adhesive tape as described in some embodiments. Additionally, for ease of description, the adhesive tape will be introduced having a length direction X, a width direction Y, and a thickness direction Z that are perpendicular to each other.
[0037] like Figure 1 and Figure 4 As shown, the adhesive tape of this application includes a first release film 100, a first adhesive layer 200 and an insulating layer 300 arranged sequentially from the bottom layer to the top layer along the thickness direction Z. The first release film 100 covers the first adhesive layer 200 and the insulating layer 300, with the insulating layer 300 covering the first adhesive layer 200. The first release film 100 is provided with a back slit line 600, which divides the first release film 100 into a first part 101 and a second part 102. The adhesive paper can be folded along the back slit line 600. The first part 101 has a missing area and a non-missing area, with the first adhesive layer 200 and the insulating layer 300 disposed on the non-missing area. The second part 102 has the first adhesive layer 200 and the insulating layer 300, and the insulating layer 300 of the second part 102 has a second adhesive layer 400 disposed on the second adhesive layer 400. The second adhesive layer 400 corresponds to the missing area on the first part 101. The release force between the first release film 100 and the second adhesive layer 400 is greater than the release force between the first release film 100 and the first adhesive layer 200.
[0038] Based on the above technical features, the beneficial effects of this application are as follows: When the adhesive tape of this application is applied to the vertical top seal and tab, firstly, the first release film 100 is folded back 180° along the back blade line 600, so that the empty area of the first release film 100 (first part 101) is bonded to the second adhesive layer 400. Then, the first release film 100 (second part 102) on the first adhesive layer 200 is peeled off, exposing the first adhesive layer 200 of the second part 102, and the top seal is applied. Because the release force between the first release film 100 and the second adhesive layer 400 is greater than the release force between the first release film 100 and the first adhesive layer 200, the adhesive tape will not be reversed. Furthermore, because the first release film 100 has a certain degree of stiffness (the existing first part 101), the adhesive tape is easier to position. During positioning, the root of the folded adhesive tape is aligned with the connection point between the top seal and the tab as a reference line, then positioned, smoothed, and bonded to the top seal.
[0039] Next, peel off the first release film 100 (first part 101) on the first adhesive layer 200. The first adhesive layer 200 of the first part 101 will be exposed. Since the adhesive tape without the second adhesive layer 400 is not fixed by the second adhesive layer 400, the first adhesive layer 200 and the insulating layer 300 on the first part 101 will pop up. There is no need to peel them off manually. Just smooth out the adhesive tape and stick it to the tab.
[0040] As described above, when applying the adhesive tape of this application to the vertical top seal and tab, the entire sheet of adhesive tape is first folded 180° to form a folded half of the adhesive tape. This half-fold makes positioning easier. During positioning, the root of the folded half-fold is aligned with the connection point between the top seal and the tab as a reference line. Then, it is positioned, smoothed, and adhered to the top seal. Afterward, the first release film 100 (first part 101) on the first adhesive layer 200 is peeled off. The first adhesive layer 200 and the insulating layer 300 on the first part 101 will spring up, eliminating the need for manual peeling. The adhesive tape can then be smoothed and adhered to the tab.
[0041] Compared to existing technologies, this application starts from the design of the adhesive tape structure. Through a new adhesive tape structure design, the adhesive tape structure for vertical surfaces is optimized, and the positioning is accurate during application. This avoids the problem of repeatedly tearing off and adjusting the tape, thus preventing increased costs. It also solves the problems of high waste rate, low efficiency, and low yield of traditional adhesive tape, thereby improving production yield and increasing UPH.
[0042] In the embodiments of this application, to facilitate the folding of the adhesive tape, such as... Figure 1 and Figure 2 As shown, the first part 101 and the second part 102 are symmetrically arranged about the back blade line 600; in the width direction Y, the insulating layer 300 on the first part 101 and the insulating layer 300 on the second part 102 have the same dimensions. Figure 3 As shown, a dummy blade line 700 is provided between the insulating layer 300 on the first part 101 and the insulating layer 300 on the second part 102. The back blade line 600 and the dummy blade line 700 overlap in the thickness direction Z. It should be noted that the back blade line 600 can be a pre-cut back blade line 600. The dummy blade line 700 can be a structure formed by intermittent cutting.
[0043] In the embodiments of this application, to facilitate the folding of the adhesive tape and the subsequent application of the adhesive tape to the tabs and top sealing edge, as follows: Figure 1 and Figure 2As shown, in the thickness direction Z, the insulating layer 300 and the first adhesive layer 200 overlap. In the length direction X, the two ends of the insulating layer 300 on the second part 102 protrude from the insulating layer 300 on the first part 101, and a second adhesive layer 400 is provided at both ends of the insulating layer 300 on the second part 102.
[0044] Furthermore, in embodiments of this application, the adhesive tape further includes a second release film 500, which is adhered to the second adhesive layer 400. The first release film 100 and the second release film 500 overlap in the thickness direction Z. The release force between the second release film 500 and the second adhesive layer 400 is less than the release force between the first release film 100 and the first adhesive layer 200. This arrangement allows the second release film 500 to protect the second adhesive layer 400, and the second release film 500 can be removed before the adhesive tape is used.
[0045] In addition, to facilitate the tearing of the first release film 100 and the second release film 500, and to protect the various adhesive layers, in the embodiments of this application, such as Figure 1 and Figure 2 As shown, there is a gap between the edge of the first adhesive layer 200 on the first part 101 and the edge of the first part 101, and there is a gap between the edge of the first adhesive layer 200 on the second part 102 and the edge of the second part 102.
[0046] In the embodiments of this application, preferably, the insulating layer 300 is a PI layer, the second adhesive layer 400 is a PSA layer, the first release film 100 is a blue release film, and the second release film 500 is a transparent release film.
[0047] The application process of this application will be described in detail below: When applying the adhesive tape to the vertical top seal and tabs, firstly, peel off the second release film 500.
[0048] Then, the first release film 100 is folded back 180° along the back scissor line 600, so that the empty area of the first release film 100 (first part 101) is bonded to the second adhesive layer 400. Because the release force between the first release film 100 and the second adhesive layer 400 is greater than the release force between the first release film 100 and the first adhesive layer 200, this folding back fixes it as follows. Figure 2 The state shown.
[0049] After that, according to Figure 2Applying the adhesive as shown is equivalent to applying it to a flat surface. During application, peel off the first release film 100 (second part 102) from the first adhesive layer 200, exposing the first adhesive layer 200 of the second part 102, and then apply the top seal. Because the release force between the first release film 100 and the second adhesive layer 400 is greater than the release force between the first release film 100 and the first adhesive layer 200, reverse release of the adhesive tape will not occur. Furthermore, due to the certain rigidity of the first release film 100 (the existing first part 101), it makes it easier to position the adhesive tape. During positioning, align the root of the folded adhesive tape with the connection point between the top seal and the tab as a reference line, then smooth it out and adhere it to the top seal.
[0050] Next, peel off the first release film 100 (first part 101) on the first adhesive layer 200. The first adhesive layer 200 of the first part 101 will be exposed. Since the adhesive tape without the second adhesive layer 400 is not fixed by the second adhesive layer 400, the first adhesive layer 200 and the insulating layer 300 on the first part 101 will pop up. There is no need to peel them off manually. Just smooth out the adhesive tape and stick it to the tab.
[0051] As described above, when applying the adhesive tape of this application to the vertical top seal and tab, the entire sheet of adhesive tape is first folded 180° to form a folded half of the adhesive tape. This half-fold makes positioning easier. During positioning, the root of the folded half-fold is aligned with the connection point between the top seal and the tab as a reference line. Then, it is positioned, smoothed, and adhered to the top seal. Afterward, the first release film 100 (first part 101) on the first adhesive layer 200 is peeled off. The first adhesive layer 200 and the insulating layer 300 on the first part 101 will spring up, eliminating the need for manual peeling. The adhesive tape can then be smoothed and adhered to the tab.
[0052] Compared to existing technologies, this application starts from the design of the adhesive tape structure. Through a new adhesive tape structure design, the adhesive tape structure for vertical surfaces is optimized, and the positioning is accurate during application. This avoids the problem of repeatedly tearing off and adjusting the tape, thus preventing increased costs. It also solves the problems of high waste rate, low efficiency, and low yield of traditional adhesive tape, thereby improving production yield and increasing UPH.
[0053] This application relates to an adhesive tape structure for fixing internal components of portable electrical devices, and more particularly to an adhesive tape structure suitable for surfaces with a certain angle. Through folding and other operations, efficient application to the angled surfaces of internal components in portable electrical devices can be achieved, solving the problems of low application efficiency and high adhesive tape scrap rate of traditional methods. Furthermore, the adhesive tape of this application has the advantages of simple structure, easy operation, and low cost.
[0054] A second aspect of this application provides a battery including the adhesive tape described above. The battery also includes a top seal and tabs; the tabs extend from the top seal and are perpendicular to the top seal; a first adhesive layer on the second portion is bonded to the top seal, and a first adhesive layer on the first portion is bonded to the tabs.
[0055] A third aspect of this application provides an electrical device that includes the battery described above.
[0056] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The protection scope of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the scope of the technology disclosed in this application, or make equivalent substitutions for some of the technical features. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the protection scope of this application.
Claims
1. A type of adhesive paper, characterized in that, The adhesive paper has a thickness direction, and the adhesive paper includes a first release film, a first adhesive layer and an insulating layer arranged sequentially along the thickness direction; The first release film covers the first adhesive layer and the insulating layer, and the insulating layer covers the first adhesive layer; The first release film is provided with a back blade line, which divides the first release film into a first part and a second part, and the adhesive paper can be folded along the back blade line; The first part is provided with a missing area and a non-missing area, and the non-missing area is provided with the insulating layer of the first adhesive layer; The second part has the insulating layer described by the first adhesive layer, and the insulating layer of the second part has a second adhesive layer, which corresponds to the vacant area on the first part. The release force between the first release film and the second adhesive layer is greater than the release force between the first release film and the first adhesive layer.
2. The adhesive tape according to claim 1, characterized in that, In the thickness direction, the insulating layer and the first adhesive layer are disposed overlapping.
3. The adhesive tape according to claim 2, characterized in that, The adhesive paper also has a length direction perpendicular to the thickness direction; Along the length direction, the two ends of the insulating layer on the second part protrude from the insulating layer on the first part, and the second adhesive layer is provided on both ends of the insulating layer on the second part.
4. The adhesive tape according to claim 1, characterized in that, The adhesive paper also has a width direction perpendicular to the thickness direction; The first part and the second part are symmetrically arranged about the back blade line; In the width direction, the insulating layer on the first portion and the insulating layer on the second portion have the same dimensions; A dummy knife line is provided between the insulating layer on the first part and the insulating layer on the second part, and the back knife line and the dummy knife line overlap in the thickness direction.
5. The adhesive tape according to claim 2, characterized in that, There is a gap between the edge of the first adhesive layer on the first part and the edge of the first part, and there is a gap between the edge of the first adhesive layer on the second part and the edge of the second part.
6. The adhesive tape according to claim 1, characterized in that, The insulating layer is a PI layer.
7. The adhesive paper according to claim 1, characterized in that, The second adhesive layer is a PSA layer.
8. The adhesive paper according to any one of claims 1-7, characterized in that, The adhesive tape further includes a second release film, which is bonded to the second adhesive layer, and the first release film and the second release film are overlapped in the thickness direction; The release force between the second release film and the second adhesive layer is less than the release force between the first release film and the first adhesive layer.
9. A battery, characterized in that, The battery includes the adhesive paper as described in any one of claims 1-8, and further includes a top seal and tabs; The electrode tab extends from the top sealing edge and is perpendicular to the top sealing edge; The first adhesive layer on the second part is bonded to the top sealing edge, and the first adhesive layer on the first part is bonded to the electrode tab.
10. An electrical appliance, characterized in that, Includes the battery as described in claim 9.