Battery adhesive tape and battery with the tape attached.

Abstract

The present invention provides a battery adhesive tape and a battery to which the tape has been attached. [Solution] The battery adhesive tape may include an adhesive portion that includes an adhesive surface to be attached to the surface of a battery cell, and a gripping portion that extends from one side of the adhesive portion. Here, the adhesive portion includes a first adhesive portion that is connected to the gripping portion in a first direction, and second adhesive portions that are arranged on both sides different from the first side of the first adhesive portion, but the adhesive strengths of the first adhesive portion and the second adhesive portion may be different.

Description

Technical Field

[0001] The present disclosure relates to a battery attachment tape and a battery to which the same is attached, and more particularly, to a battery attachment tape having a structure with improved ease of battery disassembly and a battery to which the same is attached.

Background Art

[0002] A secondary battery is a battery that can be charged and discharged, unlike a primary battery that cannot be charged. Low-capacity secondary batteries are used in portable small electronic devices such as smartphones, feature phones, laptop computers, digital cameras, and camcorders, and high-capacity secondary batteries are widely used as power sources for motor drives such as hybrid vehicles and electric vehicles and batteries for power storage. Such secondary batteries include an electrode assembly composed of a positive electrode and a negative electrode, a case for accommodating the same, and electrode terminals connected to the electrode assembly.

[0003] In the case of the battery described above, detachment of the battery may be required as necessary. For this purpose, in the battery separation process, a pull tab tape can be attached to the battery cell for the convenience of the user. Here, if the adhesion strength of the tape is weak, floating and noise may occur between the tape and the battery cell, and if the adhesion strength is strong, the ease of battery disassembly may decrease. Therefore, there is a need to overcome the above problems by optimizing the structure of the tape attachment section.

[0004] The above information disclosed in the background art of such an invention is only for improving the understanding of the background of the present invention, and thus may include information that does not constitute the prior art.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

[0006] This disclosure provides a battery adhesive tape and a battery to which the tape is attached, which help prevent problems such as the tape lifting off the battery cells in situations such as when electronic devices are dropped, and which also improves the ease of battery disassembly.

[0007] However, the technical problems that this invention aims to solve are not limited to those mentioned above, and other problems not mentioned should be clearly understood by those skilled in the art from the description of the invention below. [Means for solving the problem]

[0008] According to one embodiment of the present disclosure, the battery adhesive tape includes an adhesive portion including an adhesive surface to be attached to the surface of a battery cell, and a gripping portion extending from one side of the adhesive portion, wherein the adhesive portion includes a first adhesive portion connected to the gripping portion in a first direction, and second adhesive portions arranged on both sides of the first adhesive portion that are different from the one side of the first adhesive portion, the adhesive strengths of the first adhesive portion and the second adhesive portion can be different. [Effects of the Invention]

[0009] The adhesive portion of the battery attachment tape according to various embodiments of this disclosure can improve the ease of separation between the adhesive portion and the battery cell by including regions with different adhesive strengths in the direction in which the tape peels off via the gripping portion. Additionally, the adhesive portion of the battery attachment tape can improve the ease of separation of the battery cell and minimize tape lifting by having a first adhesive portion with relatively weak adhesive strength on the same line as the direction in which the gripping portion peels off, and second adhesive portions with relatively strong adhesive strength on both sides thereof.

[0010] The battery adhesive tapes according to various embodiments of this disclosure include a non-adhesive area, which prevents lifting that may occur between the battery cell and the adhesive area due to vibration, dropping, etc. Additionally, the second adhesive area with relatively stronger adhesive force around the non-adhesive area can further reduce lifting and noise caused by lifting.

[0011] In the various embodiments of the present disclosure, the battery adhesive tape can compensate for the weakening of the bond between the battery cell and the adhesive portion due to the non-adhesive portion by arranging a second adhesive portion with relatively stronger adhesive force adjacent to the non-adhesive portion. In other words, the adhesive portion and the battery cell can be firmly bonded by the second adhesive portion.

[0012] The effects of this disclosure are not limited thereto, and other technical effects not mentioned herein should be clearly understood by those skilled in the art from the description of the invention set forth below. [Brief explanation of the drawing]

[0013] The following drawings and other illustrations attached to this specification illustrate preferred embodiments of the present invention and, together with the detailed description of the invention later, serve to further enhance understanding of the technical concept of the present invention. Therefore, the present invention should not be interpreted as being limited solely to the matters described in such drawings. [Figure 1] This is a disassembled perspective view of a battery including a battery adhesive tape according to one embodiment of the present invention. [Figure 2] This is a plan view showing the detailed configuration of a battery adhesive tape according to one embodiment of the present invention. [Figure 3] This is a plan view enlarged showing a first dot provided in a first adhesive portion and a second dot provided in a second adhesive portion according to one embodiment of the present invention. [Figure 4] This is a plan view enlarged showing the spacing between the first dot groups in the first adhesive portion and the spacing between the second dot groups in the second adhesive portion according to one embodiment of the present invention. [Figure 5]It is an enlarged plan view showing the intervals between the surfaces of the first dot group provided in the first adhesion part and the intervals between the surfaces of the second dot group provided in the second adhesion part according to an embodiment of the present invention. [Figure 6] It is a plan view showing the ratios of the gripping part, the first adhesion part, and the second adhesion part of the battery attaching tape according to an embodiment of the present invention. [Figure 7] It is a plan view showing the ratios of the gripping part, the first adhesion part, and the second adhesion part of the battery attaching tape according to another embodiment of the present invention. [Figure 8] It is a perspective view showing a state where the battery attaching tape according to an embodiment of the present invention is attached to a battery cell. [Figure 9] It is a perspective view showing a state where the battery attaching tape according to an embodiment of the present invention is peeled off from a battery cell.

Mode for Carrying Out the Invention

[0014] <Summary of the Invention> According to an embodiment of the present disclosure, the first adhesion part may extend to the other side surface facing one side surface of the adhesion part.

[0015] According to an embodiment of the present disclosure, the adhesive force of the second adhesion part may be greater than the adhesive force of the first adhesion part.

[0016] According to an embodiment of the present disclosure, the first adhesion part and the second adhesion part each contain a large number of dots made of an adhesive substance, and the second adhesion part may be formed with dots having a larger diameter than those of the first adhesion part.

[0017] According to an embodiment of the present disclosure, the diameter of the first dot provided in the first adhesion part may be 1.2 mm, and the diameter of the second dot provided in the second adhesion part may be 1.5 mm.

[0018] According to an embodiment of the present disclosure, the first adhesion part and the second adhesion part each contain a large number of dots made of an adhesive substance, and adjacent dot groups may be arranged with the same interval at their centers.

[0019] According to one embodiment of the present disclosure, the width of the first adhesive portion in the first direction may be greater than or equal to the width of the gripping portion in the first direction.

[0020] According to one embodiment of the present disclosure, the total area of the second adhesive portion may be smaller than the total area of the first adhesive portion.

[0021] According to one embodiment of the present disclosure, the adhesive portion may include a non - adhesive portion having a non - adhesive region at at least one of the edges located at the ends.

[0022] According to one embodiment of the present disclosure, the non - adhesive portion may be positioned adjacent to the second adhesive portion.

[0023] According to one embodiment of the present disclosure, the adhesive portion may further include a strong adhesive portion on the other side surface opposite to one side surface of the adhesive portion, and the strong adhesive portion may include a plurality of non - adhesive portions in a line form.

[0024] According to one embodiment of the present disclosure, a battery to which a battery - attaching tape is attached includes a battery - attaching tape including an adhesive portion including an adhesive surface attached to the surface of a battery cell and a gripping portion extending from one side surface of the adhesive portion. The adhesive portion includes a first adhesive portion connected to the gripping portion in a first direction and a second adhesive portion disposed on both side surfaces different from the one side surface of the first adhesive portion, and the adhesive forces of the first adhesive portion and the second adhesive portion can be different.

[0025] According to one embodiment of the present disclosure, the first adhesive portion may extend to the other side surface opposite to one side surface of the adhesive portion.

[0026] According to one embodiment of the present disclosure, the adhesive force of the second adhesive portion can be greater than the adhesive force of the first adhesive portion.

[0027] According to one embodiment of the present disclosure, the first adhesive portion and the second adhesive portion each include a number of dots made of an adhesive substance, and the second adhesive portion may be formed with dots having a larger diameter than the first adhesive portion.

[0028] According to one embodiment of the present disclosure, the diameter of the first dot provided in the first adhesive portion of the adhesive material may be 1.2 mm, and the diameter of the second dot provided in the second adhesive portion may be 1.5 mm.

[0029] According to one embodiment of the present disclosure, the first adhesive portion and the second adhesive portion each contain a large number of dot-shaped adhesive materials, and adjacent adhesive materials may have their centers spaced at equal intervals from each other.

[0030] According to one embodiment of the present disclosure, the width of the first adhesive portion in the first direction may be greater than or equal to the width of the gripping portion in the first direction.

[0031] According to one embodiment of the present disclosure, the adhesive portion may include a non-adhesive portion having a non-adhesive area on at least one of the edges located at the end.

[0032] According to one embodiment of the present disclosure, the non-adhesive portion may be located adjacent to the second adhesive portion.

[0033] <Detailed description of the invention> Preferred embodiments of this disclosure will now be described in detail based on the accompanying drawings. First, terms and words used in this specification and in the claims should not be interpreted in a manner limited to their ordinary and dictionary meanings, but rather in a manner consistent with the technical idea of ​​the present invention, in accordance with the principle that inventors may define the concepts of terms as appropriate to best describe their invention. Accordingly, it should be understood that the embodiments and configurations shown in the drawings described herein represent only a selection of preferred embodiments of the present invention and do not represent the entirety of the technical idea of ​​the present invention, and that there may be a variety of equivalents and modifications that can substitute for them at the time of filing this application.

[0034] Furthermore, as used herein, “comprise,” “comprising,” “include,” and “including” specify the presence of the shapes, figures, steps, actions, members, elements, and / or groups mentioned, and do not exclude the presence or addition of one or more other shapes, figures, actions, members, elements, and / or groups.

[0035] Furthermore, to aid in understanding the invention, the accompanying drawings may not be shown to actual scale, and the dimensions of some components may be exaggerated. Also, the same component will be assigned the same reference numeral in different embodiments.

[0036] The statement that two comparison objects are "identical" means that they are "substantially identical." Therefore, being substantially identical may include having deviations that are considered low in this industry, for example, deviations of 5% or less. Furthermore, the uniformity of a parameter within a given domain can mean uniformity in terms of the average.

[0037] While terms like "first," "second," etc., are used to describe various components, these components are not limited by these terms. These terms are merely used to distinguish one component from another, and unless otherwise stated, the first component can be the second component.

[0038] Throughout the specification, unless otherwise stated, each component may be singular or plural.

[0039] When we say that any component is placed "above (or below)" or "above (or below)" a component, it means not only that the component is placed in contact with the top (or bottom) surface of the component, but also that other components may be interposed between the component and any component placed above (or below) it.

[0040] Furthermore, when it is stated that one component is "connected," "bonded," or "linked" to another component, it must be understood that these components can be directly connected or linked to each other, but they can also be "interposed" between other components, or each component can be "connected," "bonded," or "linked" through other components. Also, when it is said that one part is electrically coupled to another part, this includes not only cases where they are directly connected, but also cases where they are connected with another element in between.

[0041] Throughout the specification, when we refer to "A and / or B," we mean A, B, or A and B unless otherwise specified. That is, "and / or" includes all combinations or any combination of the listed items. When we refer to "C through D," we mean C or greater and D or less, unless otherwise specified.

[0042] The terms used herein are for the purpose of describing the embodiments of this disclosure and are not intended to limit this disclosure.

[0043] Figure 1 is an exploded perspective view of a battery including a battery adhesive tape 100 according to one embodiment of the present disclosure.

[0044] Referring to Figure 1, one embodiment of the present invention may include a battery cell 10, a battery adhesive tape 100, a fixing tape 20, and a battery fixing part 30. The battery includes at least a battery cell 10 and a battery adhesive tape 100, and generally, as shown in Figure 1, it may include the above-mentioned configuration in a stacking manner. The battery adhesive tape 100 may be directly attached to the battery cell 10. Specifically, one side of the battery adhesive tape 100 may be attached to one side of the battery cell 10, one side of the fixing tape 20 may be attached to the other side of the battery adhesive tape 100, and one side of the battery fixing part 30 may be attached to the other side of the fixing tape 20. Here, the battery fixing part 30 may be a structure located inside or outside a case or housing of an electronic device or the like.

[0045] Here, the battery adhesive tape 100 may have an adhesive portion 110 with adhesive force formed on one surface that faces the battery cell 10. That is, the film-like battery adhesive tape 100 can be configured to have adhesive force on one surface and not on the opposite surface. Therefore, when the battery adhesive tape 100 is attached to the fixing tape 20, it can be attached depending on the adhesive force of the fixing tape 20. The fixing tape 20 can be configured to have a predetermined adhesive force on all surfaces, including the surface facing the battery adhesive tape 100 and the surface facing the battery fixing portion 30.

[0046] Figure 2 is a plan view showing the detailed configuration of a battery adhesive tape 100 according to one embodiment of the present disclosure. Hereinafter, the first direction may refer to the X direction shown in the figure, and the second direction may refer to the Y direction shown in the figure.

[0047] Referring to Figure 2, the battery adhesive tape 100 may include an adhesive portion 110 that includes an adhesive surface to be attached to the surface of the battery cell 10, and a gripping portion 120 extending from one side of the adhesive portion 110. Here, the adhesive portion 110 may include a first adhesive portion 111 that overlaps the gripping portion 120 in a first direction (the Y direction is a second direction) and a second adhesive portion 112 that is located on both sides of the first adhesive portion 111. The adhesive strengths of the first adhesive portion 111 and the second adhesive portion 112 may be different. The first adhesive portion 111 may be located on the central side of the adhesive portion 110, and the second adhesive portion 112 may be located adjacent to the first adhesive portion 111. The first adhesive portion 111 may also extend to the other side of the adhesive portion 110 that is opposite to one side. Of the first adhesive portion 111 and the second adhesive portion 112, the second adhesive portion 112, which is located on the end side of the adhesive portion, can be formed to have a stronger adhesive force.

[0048] In one embodiment, the first adhesive portion 111 can be configured to have an adhesive strength that makes it easy to peel off after being attached to the battery cell 10, and the second adhesive portion can maintain an attached state with a stronger adhesive strength so that the battery attachment tape 100 does not separate from the battery cell 10 due to external forces such as dropping or distortion.

[0049] Specifically, the first adhesive portion 111 and the second adhesive portion 112 can be formed in a direction parallel to the direction in which the gripping portion 120, which is located on one side of the adhesive portion 110, peels off. The parallel arrangement of the first adhesive portion 111 and the second adhesive portion 112 makes them easily peeled off by the tensile force generated from the gripping portion 120 in a first direction (X).

[0050] Furthermore, a non-adhesive portion 101 without adhesive strength may be formed on a portion of the total surface area of ​​the adhesive portion 110 of the battery adhesive tape 100. For example, as shown in Figure 2, the adhesive portion 110 may include an adhesive area (first adhesive portion 111 and second adhesive portion 112) and a non-adhesive area (non-adhesive portion 101 including four areas formed on the edge) in order to be attached to at least a portion of one surface of the battery cell 10.

[0051] In one embodiment, at least one non-adhesive portion 101 may be formed along the end of the adhesive portion 110. The non-adhesive portion 101 may be formed on at least one edge of the adhesive portion 110. If the adhesive portion 110 has a rectangular shape, the non-adhesive portion 101 may be formed on all four edges of the rectangle. Alternatively, if the adhesive portion 110 has a rectangular shape, the non-adhesive portion 101 may be formed on at least two edges of the rectangle. The second adhesive portion 112 has a stronger adhesive force than the first adhesive portion 111, does not overlap with the gripping portion 120 in the first direction, and may be formed adjacent to the non-adhesive portion 101. This allows the second adhesive portion 112 to compensate for the weakening of the adhesive force of the battery attachment tape caused by the formation of the non-adhesive portion 101.

[0052] Figure 3 is a plan view enlarged showing the first dot 111-1 provided on the first adhesive portion 111 and the second dot 112-1 provided on the second adhesive portion 112 according to one embodiment of the present disclosure.

[0053] Referring to Figure 3, the adhesive material provided in the adhesive portion 110 can consist of numerous dots, but their sizes can differ from one another. For example, the first adhesive portion 111 and the second adhesive portion 112 described above can be formed so that they have different adhesive strengths per unit area by having different sizes of dots in each portion.

[0054] More specifically, the sizes of the dots provided in the first adhesive portion 111 and the second adhesive portion 112 can be different from each other. When the diameter of the first dot 111-1 located in the first adhesive portion 111 is called the first diameter d1, and the diameter of the second dot 112-1 located in the second adhesive portion 112 is called the second diameter d2, the second diameter d2 may be formed to be larger than the first diameter d1. Such a difference in dot size creates a difference in adhesive strength between the first adhesive portion 111 and the second adhesive portion 112.

[0055] As mentioned above, since the diameter of the second dot 112-1 is formed to be larger than the diameter of the first dot 111-1, the adhesive force between the battery cell 10 and the second adhesive portion 112 may be stronger than the adhesive force between the first adhesive portion 111 and the battery cell 10. In other words, since the diameter of the first dot 111-1 is formed to be smaller than the diameter of the second dot 112-1, the adhesive force between the battery cell 10 and the first adhesive portion 111 may be weaker than the adhesive force between the second adhesive portion 112 and the battery cell 10.

[0056] For example, regarding the first diameter d1 and the second diameter d2, the first diameter d1 may be 80% of the diameter of the second diameter d2. Specifically, the first diameter d1, which is the diameter of the first dot 111-1 on the first adhesive portion 111, may be 1.2 mm, and the second diameter d2, which is the diameter of the second dot 112-1 on the second adhesive portion 112, may be 1.5 mm. However, the above values ​​are merely examples and may be changed depending on requirements such as the type of adhesive material, the density of the dots, the area ratio between the first adhesive portion 111 and the second adhesive portion 112, and the number and area of ​​the non-adhesive portions 101.

[0057] The above-mentioned example illustrates how a strong adhesive force is formed when a large exposed area per unit area is formed using a single adhesive material. Contrary to the above example, if different adhesive materials with different adhesive strengths are used for the first adhesive portion 111 and the second adhesive portion 112, the exposed area of ​​the dots and the adhesive strength may have different correlations, but this is not limited to the above.

[0058] Figure 4 is a plan view enlarged showing the spacing between the first group of dots 111-1 provided in the first adhesive portion 111 and the spacing between the second group of dots 112-1 provided in the second adhesive portion 112 according to one embodiment of the present disclosure.

[0059] Referring to Figure 4, the adhesive material provided in the adhesive portion 110 can be provided in the form of numerous dots, and the spacing between them may be the same. More specifically, the spacing between the centers of the dots provided in the first adhesive portion 111 and the second adhesive portion 112 may be the same. As mentioned above, the first dot 111-1 and the second dot 112-1 have different diameters, but their spacing may be the same. Here, the same spacing means that the isolation distance g1 between the centers of adjacent dot groups in the X and Y directions is the same.

[0060] Figure 5 is a plan view enlarged showing the spacing between the surfaces of the first group of dots 111-1 provided on the first adhesive portion 111 according to one embodiment of the present disclosure, and the spacing between the surfaces of the second group of dots 112-1 provided on the second adhesive portion 112.

[0061] Referring to Figure 5, it can be seen that the spacing g2 between the surfaces of adjacent dot groups in the X and Y directions is the same. However, compared to Figure 4, there is a difference in that the reference point for distance measurement is the center and the surface. To explain the former case, as the diameter of the dots increases for the same area, the area on which they can be adhered increases, and therefore the adhesive strength can increase.

[0062] In contrast, if the distance between surfaces is the same, increasing the diameter of the dots may reduce the number of dots that can be placed in the same area. The adhesive strength may be lower than when the distance between the centers of the dot groups is the same.

[0063] The examples in Figures 4 and 5 mentioned above may be explanations relating to the case where the same adhesive material, that is, an adhesive material having the same adhesive strength for the same area, is applied. Furthermore, if adhesive materials with different adhesive strengths are applied to the first adhesive portion 111 and the second adhesive portion 112, a wider variety of width ratios can be formed. In addition, the distance between the centers of the dot groups in the first adhesive portion 111 and the distance between the centers of the dot groups in the second adhesive portion 112 can be different, or the distance between the surfaces of the dot groups in the first adhesive portion 111 and the distance between the surfaces of the dot groups in the second adhesive portion 112 can be different. Moreover, the distance between the centers of the dot groups can be designed to be different within the first adhesive portion 111, or within the second adhesive portion 112. In other words, the shape and material of the dots and adhesive areas can be varied in design to achieve the desired adhesive strength for each of the first adhesive portion 111 and the second adhesive portion 112.

[0064] Figure 6 is a plan view showing the ratios of the gripping portion 120, the first adhesive portion 111, and the second adhesive portion 112 of a battery adhesive tape 100 according to one embodiment of the present disclosure. Figure 7 is a plan view showing the ratios of the gripping portion 120, the first adhesive portion 111, and the second adhesive portion 112 of a battery adhesive tape 100 according to another embodiment of the present disclosure.

[0065] Referring to Figures 6 and 7, in the battery adhesive tape 100, the gripping portion 120 and the adhesive portion 110 can have different widths and formation sections in the first direction (X) and the second direction (Y).

[0066] In one embodiment, the width of the first adhesive portion 111 in the first direction (X) may be greater than or equal to the width of the gripping portion 120 in the first direction (X). Also, the width l1 of the first adhesive portion 111 in the second direction (Y) may be greater than or equal to the width L1 of the gripping portion 120 in the second direction (Y). By forming the width l1 of the first adhesive portion 111 to be greater than or equal to the width L1 of the gripping portion 120 with respect to the second direction (Y), it may become easier to peel the battery adhesive tape 100 from the battery cell 10 in the first direction (X).

[0067] In one embodiment, the total area of ​​the second adhesive portion 112 may be formed to be smaller than the total area of ​​the first adhesive portion 111. Referring to Figure 6, the width l1 of the first adhesive portion 111 in the second direction (Y) may be formed to be larger than the sum of the widths l2 of the second adhesive portion 112 in the second direction (Y). That is, the width l1 of the first adhesive portion 111 may be formed to be larger than the sum of the widths l2 of the pair of second adhesive portions 112 located on both sides (Y direction) of the first adhesive portion 111.

[0068] On the other hand, the second adhesive portion 112 may be positioned adjacent to the non-adhesive portion 101. The non-adhesive portion 101 may be provided one on each of the four edges of the adhesive portion 110, as illustrated in Figure 6, or one on each of the two edges of the adhesive portion 110 adjacent to the gripping portion 120, as illustrated in Figure 7. The position and number of non-adhesive portions 101 can be determined in various ways by those skilled in the art.

[0069] Specifically, compared to the example in Figure 6, the example in Figure 7 has only two non-adhesive portions 101 adjacent to the grip portion 120, so the area of ​​the second adhesive portion 112 can be relatively increased. The second adhesive portion 112, which has stronger adhesive force than the first adhesive portion 111, performs the function of maintaining adhesive force at the edges so that the battery adhesive tape 100 does not peel off from the battery cell 10 due to external factors that may occur when the user uses the electronic device, such as dropping or distortion.

[0070] In one embodiment, the non-adhesive portion 101 may include a boundary line of c-cuts 112a that divides the adhesive area and the non-adhesive area by at least diagonal lines. That is, the shape of the non-adhesive portion 101 may be triangular, or it may be trapezoidal as shown in the figure. For example, if the non-adhesive portion is a right triangle, the right portion of the non-adhesive area may be positioned toward the edge of the adhesive portion 110. However, the shape of the non-adhesive area can exist in a variety of forms, including c-cuts 112a.

[0071] Here, the c-cut 112a may be a structure that can accommodate distortion that occurs mainly in the X or Y direction when the battery adhesive tape 100 is attached to the battery cell 10 by the adhesive portion 110. Specifically, when the battery cell 10 is affected by distortion, noise may be generated as a part of the adhesive portion 110 separates. Specifically, noise may be generated by repeatedly attaching and detaching the battery adhesive tape 100 and the adhesive portion 110 of the battery cell 10. That is, such noise can be generated mainly by the residual adhesive force of the adhesive surface of the battery adhesive tape 100, which causes repeated attachment and detachment between the battery cell 10 and the battery adhesive tape 100. In particular, the edge portion is a location where noise is likely to be generated, so a c-cut 112a can be formed in the second adhesive portion to provide a non-adhesive portion 101 that does not have adhesive force in the adhesive portion 110.

[0072] In one embodiment, the area of ​​the non-adhesive portion 101 may be 5% to 20% of the area of ​​the adhesive portion 110. For example, the non-adhesive portion 101 can occupy approximately 13% of the total area of ​​the adhesive portion 110. However, it is not limited to this, and the non-adhesive region can have a variety of areas as long as the adhesive portion 110 can be attached to the battery cell 10.

[0073] Furthermore, the non-adhesive portion 101 may be provided adjacent to a second adhesive portion 112, which is part of the adhesive portion 110. Since the adhesive strength of the second adhesive portion 112 may be formed to be relatively greater than that of the first adhesive portion 111, the first adhesive portion 111 with relatively weaker adhesive strength may be formed on the central side of the adhesive portion 110, and the second adhesive portion 112 and the non-adhesive portion 101 with relatively stronger adhesive strength may be formed on both sides (Y direction) of the first adhesive portion 110.

[0074] In one embodiment, the second adhesive portion 112 may be formed on a part of the periphery of the non-adhesive portion 101. For example, referring to Figure 2, the second adhesive portion 112 may be formed as a trapezoid that is elongated in the X direction, with non-adhesive portions 101 at each end. Such a configuration can apply to all second adhesive portions 112 provided on both sides (Y direction) of the first adhesive portion 111, but as mentioned above, it can also be applied differently depending on the number of non-adhesive portions 101.

[0075] In one embodiment, the battery adhesive tape 100 may include a gripping portion 120 on one side (left side in the figure) of the battery adhesive tape 100, where a portion of the battery adhesive tape 100 extends in the direction of one side of the battery adhesive tape 100. Referring to Figures 6 and 7, the gripping portion 120 may extend from the adhesive portion 110 in a first direction (X). At least a portion of the gripping portion 120 may have adhesive force. In this case, at least a portion of the area of ​​the gripping portion 120 having adhesive force may be attached to one or more surfaces of the hexahedral battery cell 10. Here, the area to be attached may have the same adhesive force as the first adhesive portion 111, or it may be weaker than the adhesive force of at least the second adhesive portion 112.

[0076] The adhesive portion 110 further includes a strong adhesive portion 116 on the other side opposite to one side, and the strong adhesive portion 116 may include a plurality of line-shaped non-adhesive portions. Such line-shaped non-adhesive portions can suppress the generation of air bubbles in the strong adhesive portion 116. In addition, a strong adhesive region may be formed in at least a portion of the gripping portion 120. By providing strong adhesive portions on both sides of the adhesive portion 110 in this way (for example, the strong adhesive region of the gripping portion 120 and the strong adhesive portion 116 having line-shaped non-adhesive portions), the adhesive force of the battery attachment tape 100 can be uniformly distributed.

[0077] Figure 8 is a perspective view showing a battery adhesive tape 100 according to one embodiment of the present disclosure attached to a battery cell 10. Figure 9 is a perspective view showing a battery adhesive tape 100 according to one embodiment of the present disclosure peeled off from the battery cell 10.

[0078] Referring to Figures 8 and 9, the adhesive portion 110 of the battery adhesive tape 100 may be provided such that its surface area corresponds to that of the battery cell 10 to which it is attached. The gripping portion 120 and other components of the battery adhesive tape 100 are provided so as to extend from the side surface of the adhesive portion 110 and are bent in contact with the surface of the battery cell 10. Although not shown, the configuration that is bent in contact with the battery cell 10 may further include a configuration that extends in a second direction (Y).

[0079] In the case of the gripping portion 120 shown in Figure 8, it is positioned in a way that makes it easy for the user to grip and peel off, and the gripping portion 120 can be pulled in the indicated peeling direction (De). As shown in Figure 9, the battery cell 10 and the battery adhesive tape can be separated when the gripping portion 120 is completely peeled off in the peeling direction (De).

[0080] Although the present invention has been described above with reference to limited embodiments and drawings, it is not limited thereto, and of course, a wide range of modifications and variations are possible within the equivalent scope of the technical concept and claims of the present invention by persons with ordinary skill in the art to which the present invention pertains. [Explanation of Symbols]

[0081] 10 battery cells 20 Fixing Tapes 30 Battery fixing part 100 Battery Adhesive Tape 101 Non-adhesive part 110 Adhesive part 111 First bonding section 111-1 First dot 112 Second bonding section 112a c cut 112-1 Second dot 116 Strong adhesive part 120 Gripping part L1 Width of the gripping part l1 Width of the first bonding area l2 Width of the second adhesive section d1 First diameter d2 Second diameter De peeling direction g1 separation distance

Claims

1. The adhesive portion includes an adhesive surface that is attached to the surface of the battery cell, The adhesive portion includes a gripping portion extending from one side surface of the adhesive portion, The aforementioned adhesive portion is The gripping portion and the first adhesive portion connected in the first direction, It includes a second adhesive portion arranged on both sides of the first adhesive portion that are different from the one side surface, A battery adhesive tape wherein the adhesive strength of the first adhesive portion and the second adhesive portion are different.

2. The battery adhesive tape according to claim 1, wherein the first adhesive portion extends to the other side of the adhesive portion that is opposite to the one side of the adhesive portion.

3. The battery adhesive tape according to claim 1, wherein the adhesive strength of the second adhesive portion is greater than the adhesive strength of the first adhesive portion.

4. The first adhesive portion and the second adhesive portion each contain a large number of dots made of adhesive material, The battery adhesive tape according to claim 3, wherein the second adhesive portion is formed with a larger dot diameter than the first adhesive portion.

5. The battery adhesive tape according to claim 4, wherein the diameter of the first dot provided in the first adhesive portion is 1.2 mm, and the diameter of the second dot provided in the second adhesive portion is 1.5 mm.

6. The battery adhesive tape according to claim 3, wherein the first adhesive portion and the second adhesive portion each contain a large number of dots made of an adhesive material, and adjacent groups of dots are arranged with their centers at equal intervals from one another.

7. The battery adhesive tape according to claim 1, wherein the width of the first adhesive portion in the first direction is greater than or equal to the width of the gripping portion in the first direction.

8. The battery adhesive tape according to claim 1, wherein the total area of ​​the second adhesive portion is smaller than the total area of ​​the first adhesive portion.

9. The battery adhesive tape according to claim 1, wherein the adhesive portion includes a non-adhesive portion having a non-adhesive area at at least one of the edges located at the end.

10. The battery adhesive tape according to claim 9, wherein the non-adhesive portion is located adjacent to the second adhesive portion.

11. The adhesive portion further includes a strong adhesive portion on the other side facing the one side of the adhesive portion, The battery adhesive tape according to claim 1, wherein the strong adhesive portion includes a plurality of non-adhesive portions in a line shape.

12. In a battery to which battery adhesive tape has been applied, The aforementioned battery adhesive tape is The adhesive portion includes an adhesive surface that is attached to the surface of the battery cell, The adhesive portion includes a gripping portion extending from one side surface of the adhesive portion, The aforementioned adhesive portion is A first adhesive portion that connects the gripping portion to the first direction, It includes a second adhesive portion arranged on both sides of the first adhesive portion that are different from the one side surface, A battery in which the adhesive strength of the first adhesive portion and the second adhesive portion are different.

13. The battery according to claim 12, wherein the first adhesive portion extends to the other side of the adhesive portion that is opposite to the one side of the adhesive portion.

14. The battery according to claim 12, wherein the adhesive strength of the second adhesive portion is greater than the adhesive strength of the first adhesive portion.

15. The first adhesive portion and the second adhesive portion each contain a large number of dots made of adhesive material, The battery according to claim 14, wherein the second adhesive portion is formed with a larger diameter of dots than the first adhesive portion.

16. The battery according to claim 15, wherein, of the adhesive material, the diameter of the first dot provided in the first adhesive portion is 1.2 mm, and the diameter of the second dot provided in the second adhesive portion is 1.5 mm.

17. The battery according to claim 14, wherein the first adhesive portion and the second adhesive portion each contain a large number of dot-shaped adhesive materials, and adjacent adhesive materials are arranged with their centers at equal intervals from one another.

18. The battery according to claim 12, wherein the width of the first adhesive portion in the first direction is greater than or equal to the width of the gripping portion in the first direction.

19. The battery according to claim 12, wherein the adhesive portion includes a non-adhesive portion having a non-adhesive region on at least one of the edges located at the end.

20. The battery according to claim 19, wherein the non-adhesive portion is located adjacent to the second adhesive portion.

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