Band for battery attachment and battery

Abstract

The invention relates to a belt for battery attachment and a battery. A tape for battery attachment includes an adhesive portion on one surface of the tape, the adhesive portion including: a weak adhesive portion; a strong adhesive portion having an adhesive strength higher than an adhesive strength of the weak adhesive portion; and a perforation line perforated along an outer periphery of the strong adhesive portion.

Description

Technical Field

[0001] An aspect of the embodiments of this disclosure relates to a battery attachment strap (or battery attachment band) having a structure that can improve the ease of battery removal, and a battery attached to the strap. Background Technology

[0002] Unlike primary batteries, which are not designed to be (re)charged, secondary (or rechargeable) batteries are designed to be discharged and recharged. Low-capacity secondary batteries are used in portable small electronic devices such as smartphones, feature phones, laptops, digital cameras, and camcorders, while high-capacity secondary batteries are widely used as power sources to drive motors in hybrid and electric vehicles and to store electricity (e.g., household and / or utility-scale power storage). A secondary battery typically includes an electrode assembly containing positive and negative electrodes, a housing that houses the electrode assembly, and electrode terminals connected to the electrode assembly.

[0003] For some batteries, pull tabs can be provided to adhere to the battery cells for user convenience during battery separation. However, if a strong adhesive surface exists on the adhesive surface of the tab, separation from the battery cell may be difficult, making removal of the pull tab challenging. Furthermore, increasing the area of ​​the weak adhesive portion without utilizing the strong adhesive portion may cause the pull tab to lift off the cell. Therefore, structural changes in the adhesive area may be desired.

[0004] The information disclosed in this background section is intended to enhance the understanding of the background art of this disclosure, and therefore may contain information that does not constitute related (or prior art). Summary of the Invention

[0005] Embodiments of this disclosure may relate to a strap for attaching a battery and a battery to which the strap is attached. The strap for attaching the battery can prevent the strap from prying off the battery cell in the event of an electronic device being dropped, while also improving the ease of battery removal.

[0006] However, the technical problems to be solved by this disclosure are not limited to the above-mentioned problems, and those skilled in the art will clearly understand, through the following description of this disclosure, other problems not mentioned herein and the aspects and features of these problems that this disclosure will solve.

[0007] According to one or more embodiments of the present disclosure, a strip for battery attachment includes: an adhesive portion on one surface of the strip, the adhesive portion including: a weak adhesive portion; a strong adhesive portion having an adhesive strength stronger than that of the weak adhesive portion; and a perforation line perforating along the outer periphery of the strong adhesive portion.

[0008] In one embodiment, the perforation line may include a plurality of perforation lines along the outer perimeter, and adjacent perforation lines among the plurality of perforation lines may be spaced apart from each other by a gap.

[0009] In one embodiment, the width of the gap can be 0.4 mm.

[0010] In one embodiment, the strongly bonded portion may have a groove at a position corresponding to the gap between adjacent perforated lines.

[0011] In one embodiment, the strong adhesive portion may include a plurality of strong adhesive portions, and the plurality of strong adhesive portions may be positioned symmetrically to each other with respect to the center of the adhesive portion.

[0012] In one embodiment, the strip for battery attachment may further include a clamping portion on one side of the adhesive portion. The strong adhesive portion may overlap the clamping portion in a first direction and may extend in a second direction orthogonal to the first direction.

[0013] In one embodiment, the extension length of the strongly bonded portion in the second direction may be greater than or equal to the width of the clamping portion in the second direction.

[0014] In one embodiment, the perforated line may be spaced apart from the strongly bonded portion by a distance.

[0015] In one embodiment, the section between the perforated lines spaced apart from each other and the strongly bonded portion may include a non-bonded area.

[0016] In one embodiment, the section between the perforated lines spaced apart from each other and the strongly bonded portion may include a portion of the weakly bonded portion.

[0017] In one embodiment, the periphery of the perforated line and the strongly adhesive portion can contact each other.

[0018] In one embodiment, the strip for battery attachment may further include one or more non-adhesive portions, and the one or more non-adhesive portions may be located on the edge of the weakly adhesive portion.

[0019] In one embodiment, the strongly adhesive portion may at least partially overlap with the fixing strip adhered to the other surface of the strip.

[0020] According to one or more embodiments of the present disclosure, a battery includes a battery cell and a strip for attaching the battery, the strip including an adhesive portion on its surface and being attached to the battery cell via the adhesive portion, the adhesive portion including: a weak adhesive portion; a strong adhesive portion having an adhesive strength stronger than that of the weak adhesive portion; and a perforation line perforating along the outer periphery of the strong adhesive portion.

[0021] In one embodiment, the perforation line may include a plurality of perforation lines along the outer perimeter, and adjacent perforation lines among the plurality of perforation lines may be spaced apart from each other by a gap.

[0022] In one embodiment, the width of the gap can be 0.4 mm.

[0023] In one embodiment, the strongly bonded portion may have a groove at a position corresponding to the gap between adjacent perforated lines.

[0024] In one embodiment, the battery may further include a clamping portion on one side of the adhesive portion. The strongly adhesive portion may overlap the clamping portion in a first direction and may extend in a second direction orthogonal to the first direction.

[0025] In one embodiment, the extension length of the strongly bonded portion in the second direction may be greater than or equal to the width of the clamping portion in the second direction.

[0026] In one embodiment, the strongly adhesive portion may at least partially overlap with the fixing strip adhered to the other surface of the strip.

[0027] According to some embodiments of this disclosure, the adhesive portion of the battery attachment strip may have multiple strongly adhesive portions, with perforated lines in the strongly adhesive portions sequentially wrapped around the strip in the peeling direction, making it easier for the user to peel off the battery attachment strip. For example, at least one non-adhesive portion may be provided, such that the battery attachment strip can prevent or substantially prevent lifting or noise due to drops or twisting of the electronic device (e.g., due to carelessness during use), thereby partially separating from the battery cell.

[0028] According to some embodiments of this disclosure, the battery attachment strip can be formed such that the peel direction of the battery attachment strip and the extension direction of the strongly adhesive portion are formed in orthogonal directions, or at least at a near-orthogonal angle, to increase the ease of peeling.

[0029] However, the aspects and features of this disclosure are not limited to those described above, and other aspects and features not mentioned will be clearly understood by those skilled in the art from the detailed description described below. Attached Figure Description

[0030] The accompanying drawings illustrate embodiments of the present disclosure and, together with the detailed description of the present disclosure, further describe aspects and features of the present disclosure. Therefore, the present disclosure should not be construed as limited to the drawings.

[0031] Figure 1 An exploded perspective view illustrating a battery including a battery attachment strip according to an embodiment of the present disclosure.

[0032] Figure 2An example of the adhesive surface of a battery attachment strip according to an embodiment of the present disclosure.

[0033] Figure 3 An example of the adhesive surface of a battery attachment strip according to an embodiment of the present disclosure.

[0034] Figure 4 A perspective view illustrating the state in which the battery attachment strip is attached to a battery cell according to an embodiment of the present disclosure.

[0035] Figure 5 An example of a perforated line extending along the outer periphery of a strongly bonded portion according to an embodiment of the present disclosure.

[0036] Figure 6 An enlarged view illustrating the separation space between the strongly adhesive portion and the perforated line according to an embodiment of the present disclosure.

[0037] Figure 7 An enlarged view illustrating a strongly bonded portion without a separating space and a perforated line separating the space, according to an embodiment of the present disclosure.

[0038] Figure 8 An example is shown of the area where the fastening strap and the strong adhesive portion overlap each other according to an embodiment of the present disclosure.

[0039] Figure 9 The width of the clamping portion and the width of the strongly adhesive portion in the second direction are illustrated according to an embodiment of the present disclosure. Detailed Implementation

[0040] Some embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The terms or words used in this specification and claims should not be construed as having a conventional or dictionary meaning, but should be interpreted as being consistent with the technical spirit of this disclosure, based on the principle that the inventor is capable of being his / her own lexicographer to appropriately define the terms and concepts in order to best describe his / her invention.

[0041] The embodiments described in this specification and the configurations shown in the accompanying drawings are only some of the embodiments of this disclosure and do not represent all the technical spirit, aspects, and features of this disclosure. Therefore, it should be understood that various equivalents and modifications that can replace or modify the embodiments described herein may exist at the time of filing this application.

[0042] It will be understood that when a component or layer is described as being "on," "connected to," or "attached to" another component or layer, it can be directly on, connected to, or attached to the other component or layer, or one or more intermediate components or layers may be present. When a component or layer is described as being "directly" on, directly connected to, or directly attached to another component or layer, no intermediate components or layers are present. For example, when a first component is described as being "attached" or "connected" to a second component, the first component can be directly attached to or connected to the second component, or the first component can be indirectly attached to or connected to the second component via one or more intermediate components.

[0043] In the accompanying drawings, the dimensions of various elements, layers, etc., may be enlarged for clarity of illustration. The same reference numerals indicate the same elements. As used herein, the term “and / or” includes any and all combinations of one or more associated listed items. Furthermore, the use of “may” in describing embodiments of this disclosure refers to “one or more embodiments of this disclosure.” Expressions such as “at least one of…” and “any one of…” preceding / following the list of elements modify the entire list of elements, but not individual elements in the list. When phrases such as “at least one of A, B, and C,” “at least one of A, B, or C,” “at least one selected from the group of A, B, and C,” or “at least one selected from A, B, and C” are used to specify a list of elements A, B, and C, the phrase may refer to any and all suitable combinations or subsets of A, B, and C, such as A, B, C, A and B, A and C, B and C, or A and B and C. As used herein, the term “use” may be considered synonymous with the term “utilize.” As used herein, the terms “roughly,” “approximately,” and similar terms are used as approximate terms rather than terms of degree and are intended to account for the inherent variations in measurements or calculations that would be apparent to a person skilled in the art.

[0044] It will be understood that while the terms first, second, third, etc., may be used to describe various elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms are used to distinguish one element, component, region, layer, or segment from another element, component, region, layer, or segment. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment.

[0045] For ease of description, this document uses spatial relative terms such as “below,” “under,” “down,” “above,” and “up” to describe the relationship between one element or feature and another element or feature as shown in the figures. It should be understood that spatial relative terms are intended to encompass different orientations of the device in use or operation, in addition to the orientation depicted in the figures. For example, if the device in the figures is flipped, an element described as “below” or “under” other elements or features can be oriented as “above” or “upon” other elements or features. Therefore, the term “below” can encompass both above and below orientations. The device can be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptors used herein should be interpreted accordingly.

[0046] The terminology used herein is for the purpose of describing embodiments of this disclosure and is not intended to be limiting of this disclosure. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. It should be further understood that when used in this specification, the terms “comprising” and / or “including” specify the presence of the stated features, integers, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0047] Furthermore, any numerical ranges disclosed and / or enumerated herein are intended to include all subranges with the same numerical precision contained within the enumerated ranges. For example, the range “1.0 to 10.0” is intended to include all subranges between the enumerated minimum value of 1.0 and the enumerated maximum value of 10.0 (and inclusive of both), i.e., a minimum value equal to or greater than 1.0 and a maximum value equal to or less than 10.0, such as 2.4 to 7.6. Any maximum numerical limit enumerated herein is intended to include all lower numerical limits contained therein, and any minimum numerical limit enumerated in this specification is intended to include all higher numerical limits contained therein. Therefore, the applicant reserves the right to amend this specification, including the claims, to expressly enumerate any subranges contained within the scope expressly enumerated herein.

[0048] Referring to two compared elements, features, etc., as “identical” may mean that they are “substantially identical.” Therefore, the phrase “substantially identical” can include cases with a deviation considered low in the art, such as 5% or less. Furthermore, when a parameter is said to be consistent in a given region, this may mean that it is consistent in terms of its mean.

[0049] Throughout this specification, unless otherwise stated, each element may be singular or plural.

[0050] Placing any element "above (or below)" or "above (or below)" another element may mean that the arbitrary element can be positioned to contact the upper (or lower) surface of the element, and other elements may also be positioned between the element and any element positioned on (or below) the element.

[0051] Furthermore, it will be understood that when a component is referred to as “connected,” “linked,” or “attached” to another component, the components can be directly “connected,” “linked,” or “attached” to each other, or another component can be “between” the components.

[0052] Throughout this specification, unless otherwise stated, when “A and / or B” is mentioned, it means A, B, or A and B. In other words, “and / or” includes any or all combinations of the listed items. Unless otherwise indicated, when “C to D” is mentioned, it means C or greater than C and D or less than D.

[0053] Figure 1 An exploded perspective view illustrating a battery including a battery attachment strip 100 (e.g., a strip for battery attachment) according to an embodiment of the present disclosure.

[0054] refer to Figure 1 According to embodiments of the present disclosure, a battery may include a battery cell 10, a battery attachment strap 100, a fixing strap 20, and a battery fixing portion 30. In one embodiment, the battery includes at least [missing information - likely a component or part]. Figure 1 The battery cells 10 and battery attachment strips 100 are stacked in an illustrative manner. The battery attachment strips 100 can be directly adhered to and attached to the battery cells 10. For example, one surface of the battery attachment strip 100 can be adhered to one surface of the battery cell 10, one surface of the retaining strip 20 can be attached to another surface of the battery attachment strip 100 (e.g., the opposite surface), and one surface of the battery retaining portion 30 can be attached to another surface of the retaining strip 20 (e.g., the opposite surface). The battery retaining portion 30 can be a housing of an electronic device, or a structure disposed inside or outside the electronic device, such as a casing.

[0055] The battery attachment tape 100 may include an adhesive portion formed on one surface, which may be the surface facing the battery cell 10. For example, a film-type battery attachment tape used as the battery attachment tape 100 may have adhesive strength on one side and may have a surface opposite to that side that does not have adhesive strength. Therefore, the battery attachment tape 100 may adhere to the fixing tape 20 depending on the adhesive strength of the fixing tape 20 when it is adhered to it. For example, the fixing tape 20 may have suitable adhesive strength (e.g., a predetermined adhesive strength) on both of its surfaces (e.g., opposite surfaces), or in other words, the fixing tape 20 may have suitable adhesive strength (e.g., a predetermined adhesive strength) on the surface facing the battery attachment tape 100 and the surface facing the battery fixing portion 30.

[0056] Figure 2 An example of the adhesive surface of a battery attachment strip 100 according to an embodiment of the present disclosure.

[0057] refer to Figure 2 The battery attachment strip 100 may include an adhesive portion on one side (or one surface), the adhesive portion including an adhesive surface that adheres to the surface of the battery cell 10. The adhesive portion includes a weak adhesive portion 110 and a strong adhesive portion 120 having an adhesive force (or adhesive strength) stronger than that of the weak adhesive portion 110. The adhesive portion may further include a perforation line 122 along the outer periphery of the strong adhesive portion 120. For example, a clamping portion 130 may be included on one side of the adhesive portion.

[0058] In one embodiment, the weakly bonded portion 110 may occupy at least half of the total bonded area formed in the bonded portion. The weakly bonded portion 110 may include a plurality of dot-shaped bonded areas with suitable dimensions (e.g., predetermined dimensions). Figure 2 As illustrated, the dots may be circular, but this disclosure is not limited thereto. For example, the dots may be formed by using a mask corresponding to the dots formed on the adhesive surface of the battery attachment strip 100 (e.g., the film of the battery attachment strip 100).

[0059] The adhesive strength of the weakly bonded portion 110 may be weaker than that of the strongly bonded portion 120. The adhesive strength appearing over the same area can be determined by the exposed area of ​​the adhesive material or by the type of adhesive material. For example, the fact that the adhesive strength of the weakly bonded portion 110 is formed to be weaker than that of the strongly bonded portion 120 may mean that the strongly bonded portion 120 has a high adhesive strength per unit area when the battery attachment strip 100 is peeled off.

[0060] In one embodiment, the strong adhesive portion 120 may occupy at least a portion of the remaining area besides the weak adhesive portion 110. A plurality of strong adhesive portions 120 may be provided in the battery attachment strip 100. The strong adhesive portions 120 may be configured to be symmetrical or substantially symmetrical with respect to the center of the adhesive portion. Figure 2 In the illustrated embodiment, when two strong adhesive portions 120 are provided, they may be disposed inside the weak adhesive portion 110 (e.g., on or overlapping the weak adhesive portion 110) to be symmetrical or substantially symmetrical with respect to the center of the adhesive portion.

[0061] In one embodiment, the adhesive portion may include perforated lines 122 along the outer periphery of the strong adhesive portion 120, the perforated lines 122 allowing the film of the battery attachment strip 100 to be cut or broken if the battery attachment strip 100 is peeled off from the battery cell 10. For example, when the battery attachment strip 100 is peeled off, the strong adhesive portion 120 includes a plurality of perforated lines 122 arranged along its outer periphery, such that the film of the battery attachment strip 100 can be cut or broken at sections of the perforated lines 122 spaced apart from each other, or in other words, sections of the film of the battery attachment strip 100 can be cut or broken. Therefore, even after the battery attachment strip 100 is peeled off from the battery cell 10, the strong adhesive portion 120 can remain attached to the battery cell 10. For example, to ensure that the film of the battery attachment strip 100 is cut along the perforation line 122 when the battery attachment strip 100 is peeled off, the tensile strength of the film of the battery attachment strip 100 can be formed to be weaker than the adhesive strength of the strong adhesive portion 120, and the film of the battery attachment strip 100 can have a greater tensile strength than the adhesive strength of the weak adhesive portion 110. (Refer to the following...) Figures 5 to 7 The strongly bonded portion 120 and the perforated line 122 are described in more detail.

[0062] In one embodiment, the strong adhesive portion 120 overlaps with the clamping portion 130 disposed on one side of the adhesive portion in a first direction and may extend in a second direction orthogonal to the first direction. As used herein, the first direction may be Figure 2 The X direction is illustrated in the diagram, and the second direction can be the Y direction. For example, the width of the strong adhesive portion 120 in the first direction can be relatively narrow, and the width of the strong adhesive portion 120 in the second direction can be relatively long. The strong adhesive portions 120 can be arranged symmetrically or substantially symmetrically with each other to minimize or reduce battery separation due to twisting or dropping of the electronic device (e.g., separation between the battery attachment strip 100 and the battery cell 10).

[0063] For example, since battery twisting can occur in an oblique direction, therefore... Figure 2Specifically, it may occur at the corners of the adhesive portion and in the direction of connection of the corners located at the diagonal (as an axis). Accordingly, the strong adhesive portion 120 may be arranged in a symmetrical shape and may extend along the axis of its twisting to a length that can pass through the strong adhesive portion 120. As described above, the strong adhesive portion 120 may remain or substantially maintain its adhesive state in response to external forces and may transmit looser forces to the surrounding weak adhesive portions 110, thereby minimizing or reducing battery separation due to twisting or dropping of the electronic device (e.g., separation between the battery attachment strip 100 and the battery cell 10).

[0064] In one embodiment, the battery attachment strip 100 may include at least one non-adhesive portion 101. For example, such as Figure 2 As illustrated, at least one non-adhesive portion 101 may be provided along the edge of the adhesive portion (or located on the edge of the weakly adhesive portion 110). Figure 2 In the illustrated embodiment, two non-adhesive portions 101 may be formed at the upper corner and two non-adhesive portions 101 may be formed at the lower corner, but the location of the non-adhesive portions 101 is not limited thereto, and depending on the desired design, the non-adhesive portions 101 may be provided at one or all four corners.

[0065] More in detail, such as Figure 2 As shown, the adhesive portion can have a generally quadrilateral shape, and in one embodiment, where the corners where the non-adhesive portion 101 can be respectively provided are referred to as the first corner to the fourth corner, they can be respectively formed at the first corner to the fourth corner. Figure 2 As shown, the first corner and the second corner can be respectively located on the left and right sides of the upper portion of the adhesive part. Furthermore, the third corner and the fourth corner can be respectively located on the left and right sides of the lower portion of the adhesive part.

[0066] In one embodiment, the area of ​​the non-adhesive portion 101 can be 5% to 20% of the total area of ​​the adhesive portion. For example, the non-adhesive portion 101 can occupy approximately 13% of the total area of ​​the adhesive portion. However, this disclosure is not limited thereto, and the non-adhesive portion 101 can have various suitable widths as long as the adhesive portion can be attached to the battery cell 10. In one embodiment, the combined area of ​​the weak adhesive portion 110 and the non-adhesive portion 101 can be formed to be larger than the area of ​​the strong adhesive portion 120, thereby allowing the user to more easily remove the battery attachment strip 100 from the battery cell 10.

[0067] In one embodiment, the non-adhesive portion 101 may include a boundary line (c-cut) 102 that at least obliquely divides the adhesive and non-adhesive regions from each other. For example, the non-adhesive portion 101 may be triangular in shape, or it may be a polygon or semicircle such as a trapezoid. The c-cut 102 may have a suitable structure that corresponds to twisting that may occur about the X or Y direction when the battery attachment strip 100 is attached to the battery cell 10 through the adhesive portion. For example, this may mean preventing noise from partial separation of the adhesive portion in advance if the battery cell 100 is affected by twisting. More specifically, repetitive noise may occur when the adhesive state between the battery attachment strip 100 and the adhesive portion of the battery cell 100 is released and the battery cell 10 is reattached and separated due to the remaining adhesive force, but the battery attachment strip 100 can minimize or reduce the occurrence of such noise by providing a non-adhesive portion 101 at at least one corner of the adhesive portion.

[0068] In one embodiment, the battery attachment strip 100 may include a clamping portion 130 extending from the adhesive portion in one direction. At least a portion of the clamping portion 130 may be adhesive. For example, at least a portion of the clamping portion 130 that is adhesive to the hexahedral battery cell 10 may be attached to one or more surfaces of the battery cell 10. The bonding area between the clamping portion 130 and the battery cell 10 may be selected based on the bonding strength range of the weak adhesive portion 110 and the strong adhesive portion 120.

[0069] In some embodiments, the retaining band 20 may adhere to another surface of the battery attachment band 100, or in other words, the retaining band 20 may adhere to a surface of the battery attachment band 100 where no adhesive portion is formed. At least a portion of the retaining band 20 may overlap with the strong adhesive portion 120 of the battery attachment band 100. In other words, the retaining band 20 may be configured such that a portion of its area overlaps with the strong adhesive portion 120 and the remaining area does not overlap with the strong adhesive portion 120.

[0070] Figure 3 An example of the adhesive surface of a battery attachment strip 100 according to an embodiment of the present disclosure.

[0071] Figure 3 The battery attachment band 100 illustrated above may have the same characteristics as the one described above. Figure 2 The configurations described are the same or substantially the same, except that the strong adhesive portion 120 can be formed without overlapping with the weak adhesive portion 110, so their redundant description need not be repeated.

[0072] refer to Figure 3According to one embodiment, the weak adhesive portion 110 may be formed in (e.g., only in) areas other than the area where the strong adhesive portion 120 is formed. As described above, the weak adhesive portion 110 may be an adhesive area configured with multiple dots, and may be formed using a mask corresponding to the dots formed on the adhesive surface of the battery attachment strip 100 (e.g., the film of the battery attachment strip 100). On the other hand, the strong adhesive portion 120 may use the original adhesive surface of the battery attachment strip 100 (e.g., the film of the battery attachment strip 100).

[0073] The strong adhesive portion 120 overlaps with the clamping portion 130 disposed on one side of the adhesive portion in a first direction and may extend in a second direction orthogonal to the first direction. For example, the width of the strong adhesive portion 120 in the first direction may be relatively narrow, and the width (or length) of the strong adhesive portion 120 in the second direction may be relatively long. In some embodiments, the vertical horizontal (e.g., thickness) of the upper surface of the strong adhesive portion 120 and the vertical horizontal (e.g., thickness) of the upper surface of the weak adhesive portion 110 may be the same as or substantially the same as each other.

[0074] Figure 4 A perspective view illustrating the state in which the battery attachment strip 100 is attached to the battery cell 10 according to an embodiment of the present disclosure.

[0075] refer to Figure 4 The clamping portion 130 can be pulled in a first direction (e.g., the X direction) to peel off the battery attachment strip 100. However, even if the film of the battery attachment strip 100 is not pulled completely parallel to the first direction but is pulled and peeled in a direction De corresponding to the first direction, the film of the battery attachment strip 100 can still be cut or broken due to the perforation line 122, and the strong adhesive portion 120 can separate from the adhesive portion (e.g., with the weak adhesive portion 110).

[0076] For example, in the event that the battery attachment strip 100 is peeled off, in addition to the forces in the first and second directions, a force in a third direction (e.g., the Z direction) is applied, and the upward pulling force in the third direction causes the weakly bonded portion 110 to separate from the battery cell 10, but the strongly bonded portion 120 adheres relatively firmly to the battery cell 10, such that the strongly bonded portion 120 can separate from the adhesive portion along the perforation line 122 and remain adhered to the battery cell 10. This is due to the strong adhesive strength of the adhesive portion and the structure designed to allow the film of the battery attachment strip 100 to be cut or broken between the perforation lines 122 extending along the outer periphery of the strongly bonded portion 120.

[0077] Figure 5 An example is a perforated line 122 extending along the outer periphery of the strongly adhesive portion 120 according to an embodiment of the present disclosure. Figure 6An enlarged view of the separation space 123 between the strong adhesive portion 120 and the perforation line 122, according to an embodiment of the present disclosure.

[0078] refer to Figure 5 and Figure 6 The strong adhesive portion 120 may have a rectangular shape extending in one direction, and a perforated line 122 extending along its extended path adjacent to the outer periphery of the strong adhesive portion 120. The perforated line 122 may be in the form of a through-hole penetrating the membrane of the battery attachment strip 100, and may be in the form of an elongated hole extending in the extending direction. Multiple perforated lines 122 may be provided. For example, adjacent perforated lines 122 on the path in which they are arranged may be spaced apart from each other by a gap (e.g., a predetermined gap) g1. For example, the gap g1 may be 0.4 mm. The membrane in the spaced section of the battery attachment strip 100 corresponding to the gap g1 may be a non-adhesive region or a weakly adhesive portion that does not contain adhesive material.

[0079] In one embodiment, the strong adhesive portion 120 may include a groove 125 formed at a location corresponding to the gap g1 between adjacent perforated lines 122. In some embodiments, the strong adhesive portion 120 and the perforated lines 122 may include a separating space 123 between them, spaced apart from each other by an appropriate distance (e.g., a predetermined distance). In some embodiments, the separating space 123 may further refer to the space on the membrane of the battery attachment strip 100 formed by the groove 125 of the strong adhesive portion 120. As an example, the separating space 123 may be a non-adhesive area in which no adhesive material is present. As another example, the separating space 123 may be formed as part of the weak adhesive portion 110.

[0080] In the event that the battery attachment strip 100 is peeled off, the film of the battery attachment strip 100 at the section corresponding to the gap between the separation spaces 123 and / or between adjacent perforation lines 122 can be cut or broken, and the strong adhesive portion 120 can remain on the battery cell 10. As an example, the strong adhesive portion 120 can be cut or broken by a groove 125 formed in the strong adhesive portion 120, such that a portion (e.g., only a portion) of the strong adhesive portion 120 remains on the battery cell 10.

[0081] Figure 7 An enlarged view illustrating a strongly adhesive portion 120 and a perforated line 122 without a separating space, according to an embodiment of the present disclosure.

[0082] refer to Figure 7Apart from the partition space 123a in the area corresponding to the groove 125 of the strong adhesive portion 120, a partition space may not be provided between the perforation line 122 and the strong adhesive portion 120, so that the outer periphery of the perforation line 122 and the strong adhesive portion 120 can be formed to contact each other.

[0083] In this configuration, when the battery attachment strip 100 is peeled off, the film of the battery attachment strip 100 between the perforations 122 can be cut, leaving only the strongly adhesive portion 120 attached to the battery cell 10, and the battery attachment strip 100 can be removed as the weakly adhesive portion 110 is peeled off. For example, the strongly adhesive portion 120 can be cut by a groove 125 formed in the strongly adhesive portion 120, such that a portion (e.g., only a portion) of the strongly adhesive portion 120 remains on the battery cell 10.

[0084] Figure 8 An example is shown of the area where the fixing strap 20 and the strong adhesive portion 120 overlap each other according to an embodiment of the present disclosure.

[0085] refer to Figure 8 As mentioned above Figure 1 The battery attachment strip 100 and the battery fixing portion 30 can be adhered to each other by the adhesive force of the fixing strip 20. Because the adhesive surface of the battery attachment strip 100 can be formed only on one side (e.g., one surface) of the two sides (e.g., two surfaces) of the battery attachment strip 100, the adhesive surface (e.g., the surface forming the weak adhesive portion 110 and the strong adhesive portion 120) can adhere to the battery cell 10 by contacting the battery cell 10, and the other side (e.g., another surface) of the battery attachment strip 100 can adhere to the fixing strip 20 by contacting the fixing strip 20.

[0086] In this case, the fixing strap 20 does not need to be square, and can have various suitable shapes depending on the desired design. As an example, the fixing strap 20 can have a shape similar to... Figure 8The shapes illustrated herein (e.g., U-shapes) are the same or substantially the same. However, this disclosure is not limited thereto, and the retaining band 20 may have various suitable shapes as needed or desired. In this example, the retaining band 20 may partially overlap with the weakly bonded portion 110 and may partially overlap with the strongly bonded portion 120. For example, in a pair of strongly bonded portions 120 arranged along a first direction, a portion of the strongly bonded portion 120 may form an overlapping region S2 that overlaps with the retaining band 20, and the remaining portion of the strongly bonded portion 120 may form a non-overlapping region S1 that does not overlap with the retaining band 20. For example, even in the case of overlap, the retaining band 20 may adhere to the non-bonded surface of the battery attachment band 100 such that direct adhesion to the strongly bonded portion 120 may not occur, and the retaining band 20 may contact the film of the battery attachment band 100.

[0087] The adhesive strength of the retaining strip 20 may be weaker than the adhesive strength of the strong adhesive portion 120. When the battery attachment strip 100 is peeled from the battery cell 10, the retaining strip 20 may also be removed during the peeling process. The retaining strip 20 may be attached to the battery retaining portion 30 side and may be removed together with the battery retaining portion 30. The retaining strip 20 may be configured such that the adhesive strength formed in the area where the retaining strip 20 and the strong adhesive portion 120 overlap is not stronger than the adhesive strength of the strong adhesive portion 120. Because the adhesive material of the retaining strip 20 and the adhesive material of the strong adhesive portion 120 adhere to both sides of the film of the battery attachment strip 100 with the film of the battery attachment strip 100 as the boundary, in order to keep the strong adhesive portion 120 attached to the battery cell 100 after peeling off the battery attachment strip 100, it is desirable that the adhesive material of the retaining strip 20 directly or indirectly attached to the battery attachment strip 100 has an adhesive strength weaker than the adhesive strength of the strong adhesive portion 120. In other words, the adhesive strength of at least the region in the fixing band 20 corresponding to the overlapping region S2 can be made lower than the adhesive strength of the strongly bonded portion 120.

[0088] Figure 9 The width l1 of the clamping portion 130 and the width l2 of the strong adhesive portion 120 in a second direction (e.g., the Y direction) are illustrated according to an embodiment of the present disclosure.

[0089] refer to Figure 9 In one embodiment, the width l2 (e.g., extension length) of the strong adhesive portion 120 in the second direction may be greater than or equal to the width l1 of the clamping portion 130 in the second direction. The tensile strength of the film of the battery attachment strip 100 may be closer to the adhesive strength of the weak adhesive portion 110 than the adhesive strength of the strong adhesive portion 120. For example, the tensile strength of the film of the battery attachment strip 100 may be formed to be at the same or substantially the same level as the adhesive strength of the weak adhesive portion 110.

[0090] In some embodiments, the strongly adhesive portion 120 extending in the second direction (e.g., the Y direction) can be extended as long as possible so that the torsion axis can pass through the strongly adhesive portion 120 in an oblique direction. However, this arrangement can be satisfied not only by the length of the strongly adhesive portion 120 extending in the second direction, but also by the position of the strongly adhesive portion 120 in the first direction. For example, the strongly adhesive portion 120 can be positioned towards the center so that the torsion axis passes through the strongly adhesive portion 120 in an oblique direction.

[0091] To satisfy all the above conditions, a pair of strongly adhesive portions 120 may be provided in the first direction, starting from the left end portion, at 1 / 3 and 2 / 3 of the adhesive portion, respectively, and each strongly adhesive portion 120 may extend in the second direction to a length equal to 90% of the width of the adhesive portion. However, the position and size of the strongly adhesive portions 120 may be modified in various ways as needed or desired, and this disclosure is not limited thereto.

[0092] While this disclosure has been described above with reference to embodiments thereof, it is not limited thereto. Those skilled in the art can make various modifications and variations thereto within the spirit and equivalent scope of the claims.

Claims

1.A tape for battery attachment, comprising: an adhesive portion on one surface of the tape, the adhesive portion comprising: a weak adhesive portion; a strong adhesive portion having a stronger adhesive strength than the weak adhesive portion; and a perforation line perforated along an outer periphery of the strong adhesive portion. 2.The tape for battery attachment according to claim 1, wherein the perforation line comprises a plurality of perforation lines along the outer periphery, and adjacent perforation lines among the plurality of perforation lines are spaced apart from each other by a gap. 3.The tape for battery attachment according to claim 2, wherein a width of the gap is 0.4 mm. 4.The tape for battery attachment according to claim 2, wherein the strong adhesive portion has a slot at a position corresponding to the gap between the adjacent perforation lines. 5.The tape for battery attachment according to claim 1, wherein the strong adhesive portion comprises a plurality of strong adhesive portions, and the plurality of strong adhesive portions are symmetrically positioned with respect to a center of the adhesive portion. 6.The tape for battery attachment according to claim 1, further comprising a clamping portion on one side of the adhesive portion, wherein the strong adhesive portion overlaps the clamping portion in a first direction and extends in a second direction orthogonal to the first direction. 7.The tape for battery attachment according to claim 6, wherein an extension length of the strong adhesive portion in the second direction is greater than or equal to a width of the clamping portion in the second direction. 8.The tape for battery attachment according to claim 1, wherein the perforation line is spaced apart from the strong adhesive portion by a distance. 9.The tape for battery attachment according to claim 8, wherein a section between the perforation line and the strong adhesive portion spaced apart from each other by the distance comprises a non-adhesive region. 10.The tape for battery attachment according to claim 8, wherein a section between the perforation line and the strong adhesive portion spaced apart from each other by the distance comprises a portion of the weak adhesive portion. 11.The tape for battery attachment according to claim 1, wherein an outer periphery of the perforation line and the strong adhesive portion are in contact with each other. 12.The tape for battery attachment according to claim 1, further comprising one or more non-adhesive portions, wherein the one or more non-adhesive portions are located on an edge of the weak adhesive portion. 13.The tape for battery attachment according to claim 1, wherein the strong adhesive portion at least partially overlaps with a fixing tape adhered to another surface of the tape. 14.A battery, comprising: a battery cell; and the tape for battery attachment according to any one of claims 1 to 13 attached to the battery cell by the adhesive portion. ​

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