JP-2026075050-A - Battery pack fixing tape and battery pack to which the fixing tape is applied

Abstract

[Problem] To propose a technology that can improve customer quality satisfaction by eliminating noise during handling of battery packs. [Solution] The present invention relates to a fixing tape for a battery pack and a battery pack to which the fixing tape is applied, and discloses a fixing tape and a battery pack to which the fixing tape is applied, which is attached simultaneously to a battery and a battery case that houses the battery to maintain the state of the battery's coupling to the battery case, and which includes a tape body having a width that can contact both the battery and the battery case, and an adhesive layer laminated on one side of the tape body that provides adhesive force and is fixed to the battery and the battery case, and which has through holes formed therein that block the transmission of tensile force that occurs when the battery moves relative to the battery case due to external force, and prevent the adhesive layer from separating from the battery or battery case due to tensile force. [Selection Diagram] Figure 5

Inventors

• ウンイル チェ

Assignees

• 三星エスディアイ株式会社

Dates

Publication Date

20260507

Application Date

20250910

Priority Date

20241021

Claims (20)

1. A battery case and a tape body that contacts the battery connected to the battery case, An adhesive layer is laminated on one side of the tape body to provide adhesive strength for fixing the tape body to the battery and battery case, A through hole formed in the tape body located at the boundary between the battery and the battery case, A fixing tape for battery packs, characterized by containing the following:
2. The battery pack fixing tape according to claim 1, characterized in that the through-hole exposes the boundary portion between the battery and the battery case, thereby blocking the transmission of tensile force generated when the battery moves relative to the battery case due to external force.
3. The battery pack fixing tape according to claim 1, characterized in that the through-hole is sized to expose a portion of at least one of the battery case and the battery.
4. The aforementioned battery has a rectangular shape, The battery pack fixing tape according to claim 1, characterized in that the through-hole includes a first through-hole that exposes the corner portion of the battery.
5. The battery pack fixing tape according to claim 4, characterized in that the aforementioned through-hole further includes a second through-hole that exposes the end of the battery excluding the corner portion.
6. The battery pack fixing tape according to claim 2, further characterized in that a reinforcing patch is attached to cover the through-hole while being fixed to the other side of the tape body, thereby preventing damage to the fixing tape due to tensile force.
7. The fixing tape has a front adhesive portion that is attached to the front of the battery, and a rear adhesive portion that is attached to the rear of the battery in a folded state relative to the front adhesive portion. The battery pack fixing tape according to claim 4, characterized in that the first through hole is formed in both the front contact portion and the rear contact portion.
8. The battery pack fixing tape according to claim 4, characterized in that the first through-hole has a shape that folds in accordance with the shape of the corner portion of the battery.
9. The battery pack fixing tape according to claim 4, characterized in that the first through-hole has a polygonal shape.
10. The battery pack fixing tape according to claim 4, characterized in that the first through-hole has a circular or elliptical shape.
11. A battery case and a tape body having a width that can contact the battery connected to the battery case, An adhesive layer is laminated on one side of the tape body to provide adhesive force for fixing the tape body to the battery and the battery case, A fixing tape for a battery pack, characterized in that it includes a non-adhesive portion formed on the tape body located at the boundary between the battery and the battery case.
12. The non-adhesive portion is a region where the adhesive layer is removed so that the tape body is not adhered to the boundary between the battery and the battery case, and is characterized by blocking the transmission of tensile force generated when the battery moves relative to the battery case due to external force, as described in claim 11.
13. The battery pack fixing tape according to claim 11, characterized in that the battery has a rectangular shape, and the non-adhesive portion has a shape corresponding to the corner portion of the battery.
14. A battery case that houses the battery, The battery installed inside the aforementioned battery case, A fixing tape comprising: a tape body attached to the battery and the battery case, maintaining the bond state of the battery to the battery case, having a width that contacts the battery and the battery case; an adhesive layer laminated on one side of the tape body to provide adhesive force for fixing the tape body to the battery and the battery case; and a through hole formed in the tape body at the boundary portion between the battery and the battery case; A battery pack characterized by including the following.
15. The battery pack according to claim 14, characterized in that the through-hole exposes the boundary portion between the battery and the battery case, thereby blocking the transmission of tensile force generated when the battery moves relative to the battery case due to external force.
16. The battery pack according to claim 14, characterized in that the through-hole is sized to expose a portion of at least one of the battery case and the battery.
17. The aforementioned battery has a rectangular shape, The battery pack according to claim 14, characterized in that the through-hole includes a first through-hole that exposes the corner portion of the battery.
18. The battery pack according to claim 17, characterized in that the aforementioned through-hole further includes a second through-hole that exposes the end of the battery excluding the corner portion.
19. The battery pack according to claim 15, further characterized in that a reinforcing patch is attached to the fixing tape, covering the through-hole while being fixed to the other side of the tape body, and preventing damage to the fixing tape due to tensile force.
20. The fixing tape has a front contact portion that adheres to the front of the battery, and a rear contact portion that adheres to the rear of the battery in a folded state relative to the front contact portion. The battery pack according to claim 17, characterized in that the first through-hole is formed in both the front contact portion and the rear contact portion.

Description

This invention relates to a fixing tape applied to a battery pack, and more particularly to a fixing tape for a battery pack and a battery pack to which the fixing tape is applied. Unlike primary batteries, which cannot be recharged, rechargeable batteries are batteries that can be charged and discharged. Low-capacity batteries are used in portable, small electronic devices such as smartphones, feature phones, notebook PCs, digital cameras, and camcorders, while high-capacity batteries are widely used as power sources for motors in hybrid and electric vehicles, as well as for power storage. Such batteries include an electrode assembly consisting of a positive and negative electrode, a case to house it, and electrode terminals connected to the electrode assembly. Furthermore, multiple batteries can be combined to form energy storage devices with increased voltage and/or current capacity. The category of energy storage devices may include battery modules/packs used in automobiles and electrical equipment. Battery packs used in devices such as notebook PCs and tablet PCs may contain cylindrical, prismatic, or pouch-type batteries. These battery packs consist of a frame-type case, numerous battery cells housed within the case, and fixing tape to secure the battery cells to the case. The fixing tape may have information related to the battery pack printed on it. However, conventional battery packs have the problem of generating an unpleasant noise when pressed or twisted. This noise occurs when the adhesive surface of the fixing tape, the case or the adhesive surface, and the battery cells are repeatedly attached and detached. Such noise reduces customer satisfaction with the specifications. Therefore, there is a need for fixing tape and battery packs to which this tape is applied that do not generate an unpleasant noise when pressed or twisted. The information disclosed above in the technology underlying this invention is intended to improve understanding of the background of the present invention, and therefore may include information that does not constitute prior art. The following drawings accompanying this specification illustrate preferred embodiments of the present invention and, together with the detailed description of the invention described later, serve to further illustrate the technical concept of the present invention. Therefore, the present invention should not be construed as being limited solely to the matters depicted in such drawings. Figure 1 is a schematic diagram of a pouch-type battery.Figure 2 is a cross-sectional view of a cylindrical battery.Figure 3(a) is a top perspective view showing the external appearance of a rectangular battery.Figure 3(b) is a cross-sectional view taken along the line A-A in Figure 3(a).Figure 4 is an example diagram of a battery module with batteries arranged in a grid.Figure 5 shows the configuration of a fixing tape and a battery pack to which the fixing tape is applied, according to one embodiment of the present invention.Figure 6 is a cross-sectional perspective view showing an enlarged view of the structure of the first through-hole in the fixing tape shown in Figure 5.Figure 7 is an exploded view of a battery pack fixing tape according to one embodiment of the present invention.Figure 8(a) is a diagram illustrating the function of the fixing tape shown in Figure 7.Figure 8(b) is a diagram illustrating the function of the fixing tape shown in Figure 7.Figure 9 is an exploded view showing a modified example of the fixing tape shown in Figure 7.Figure 10(a) shows a modified example of the fixing tape according to one embodiment of the present invention.Figure 10(b) shows a modified example of the fixing tape according to one embodiment of the present invention.Figure 11(a) shows another modified example of the fixing tape according to one embodiment of the present invention.Figure 11(b) shows another modified example of the fixing tape according to one embodiment of the present invention.Figure 12(a) shows another modified example of the fixing tape according to one embodiment of the present invention.Figure 12(b) shows another modified example of the fixing tape according to one embodiment of the present invention.Figure 13(a) shows another modified example of the fixing tape according to one embodiment of the present invention.Figure 13(b) shows another modified example of the fixing tape according to one embodiment of the present invention.Figure 14 is a diagram illustrating another example of a fixing tape according to one embodiment of the present invention.Figure 15 is a cross-sectional view taken along the line B-B in Figure 14.Figure 16 is an exploded view showing another modified example of the fixing tape according to one embodiment of the present invention.Figure 17 is a cross-sectional view taken along the line C-C in Figure 16.Figure 18 is a diagram illustrating the application method of the fixing tape shown in Figure 16. Preferred embodiments