CN218989140U

CN218989140U - Protective gummed paper and battery cell

Info

Publication number: CN218989140U
Application number: CN202222919457.5U
Authority: CN
Inventors: 安宏娟; 白志全; 彭明勇; 骆志为
Original assignee: Huizhou Desay Battery Co Ltd
Current assignee: Huizhou Desay Battery Co Ltd
Priority date: 2022-11-02
Filing date: 2022-11-02
Publication date: 2023-05-09
Anticipated expiration: 2032-11-02

Abstract

The utility model relates to the technical field of gummed paper, and particularly discloses protective gummed paper and a battery cell, wherein the protective gummed paper comprises a single gummed layer, a protective paper layer and a double-sided gummed layer, the single gummed layer comprises a gummed surface and a non-gummed surface, the protective paper layer is arranged on the non-gummed surface, and the double-sided gummed layer is arranged on the protective paper layer.

Description

Protective gummed paper and battery cell

Technical Field

The utility model relates to the technical field of gummed paper, in particular to protective gummed paper and a battery cell.

Background

The battery has become trend to apply SIP technology protection board, has also cancelled the use of gluing frame or support when applying SIP technology, but after not gluing frame or support, has become new problem to the protection of electric core recess part.

In order to solve the protection problem of the cell groove part, the existing scheme is that PI gummed paper is firstly pasted to wrap the cell groove part, and then gummed paper is used for wrapping a protection plate from the cell groove part to the back of the protection plate, so that the mode needs two rubberizing operations, and the problem of complex rubberizing procedures exists; the other scheme is that only one PI gummed paper is pasted to cover the cell groove part, but the puncture resistance strength of the single PI gummed paper is insufficient, and the PI gummed paper is easy to tear, so that the puncture risk caused by the deformation of the nickel sheet and the sharp part of the welding position cannot be prevented.

Disclosure of Invention

Aiming at the problems that the rubberizing process is complex and the puncture risk exists, the utility model provides the protective gummed paper, which can realize the functions of insulating, puncture-resisting and fixing the protective plate on the battery cell by only one gummed paper material, effectively reduces rubberizing steps and improves the product quality.

In order to solve the technical problems, the utility model provides the following specific scheme:

the protective gummed paper comprises a single gummed layer, a protective paper layer and a double-sided gummed layer, wherein the single gummed layer comprises a gummed surface and a non-gummed surface, the protective paper layer is arranged on the non-gummed surface, and the double-sided gummed layer is arranged on the protective paper layer.

In some embodiments, the protective paper layer is located at the middle position of the non-adhesive surface, and the double-sided adhesive tape is laminated on the protective paper layer, so that the protective adhesive tape is attached by using a single adhesive layer corresponding to the non-puncture risk area on the battery cell, thereby having the functions of insulation and easy bending and wrapping.

In some embodiments, the L-shaped single adhesive layer is arranged at the two opposite ends of the protective paper layer in a mirror image mode, so that the protective paper layer has bending and wrapping functions and improves the attaching stability of the protective adhesive paper.

In some embodiments, the thickness of the protective paper layer is 0.06-0.1mm, so that the puncture resistance of the protective gummed paper is improved, and the thickness of the battery cell body is not influenced.

In some embodiments, the thickness of the gummed paper is 0.25-0.33mm, which plays the roles of insulation, puncture resistance and fixing of the protection plate, and does not affect the thickness of the cell body.

In some embodiments, the stripping force of the double-sided adhesive layer is more than or equal to 15N/25mm, so that the adhesion force of the double-sided adhesive layer to the protection plate is ensured, and the positioning stability of the double-sided adhesive layer to the protection plate is improved.

In some embodiments, the protective paper layer is made of aramid paper or DuPont paper, has the advantage of high temperature resistance, is not aged after long-term use at high temperature, and has high electrical performance and mechanical performance.

In some embodiments, the gummed paper further comprises an attaching paper and a release paper, the gummed surface is arranged on the attaching paper, the release paper is arranged on the double-sided adhesive layer, and before the gummed paper is used, the attaching function of the protective gummed paper is ensured so as to be convenient for attaching and using.

In some embodiments, the release paper comprises a lamination part and a handle part connected with the lamination part, the lamination part is overlapped on the double-sided adhesive layer, and the handle part protrudes out of the double-sided adhesive layer, so that the release paper is conveniently torn off the double-sided adhesive layer through the handle part, and the operation convenience is improved.

The application still provides a battery cell, the battery cell includes battery cell body, protection shield and the protection offset paper of any one of the above-mentioned embodiments, be formed with fluted portion on the battery cell body, fluted portion is connected with the utmost point ear, the utmost point ear is connected to the protection shield, the single glue film of protection offset paper is attached in fluted portion, the protection shield is attached in the double faced adhesive tape of protection offset paper, plays insulating, puncture-resistant and the effect of fixed protection shield to the battery cell, effectually reduced rubberizing step and improved product quality.

The utility model provides a pair of protection gummed paper, including single glue film, protection ply and double faced adhesive tape, single glue film is including taking the gluey face and not having the gluey face, protection ply locates not having on the gluey face, on the protection ply was located to the double faced adhesive tape, through setting up protection ply, through attaching the recess part at the electric core body with single glue film, play the guard plate to the recess part of electric core body, position offset appears in handling by the double faced adhesive tape, avoid the guard plate, because the double faced adhesive tape is located protection ply, consequently, can effectively avoid the risk that the device pierces protection gummed paper on the circuit board through protection ply, realize only needing a gummed paper material can play insulation to the electric core, puncture-resistant and fixed protection board's effect, effectually reduced rubberizing step and improved product quality.

Drawings

FIG. 1 is a schematic illustration of a protective gummed paper provided in an embodiment of the present utility model;

FIG. 2 is a schematic layered view of a protective gummed paper provided in an embodiment of the present utility model;

fig. 3 to fig. 7 are schematic diagrams illustrating an attaching process of the protective gummed paper provided in the embodiment of the present utility model;

FIG. 8 is another schematic view of a protective gummed paper provided in an embodiment of the present utility model;

FIG. 9 is another layered schematic of a protective gummed paper provided in an embodiment of the present utility model;

FIG. 10 is a schematic diagram of a cell provided in an embodiment of the present utility model;

wherein 10 is gummed paper; 1 is a single adhesive layer; 2 is a protective paper layer; 3 is a double-sided adhesive layer; 4 is attached paper; 5 is release paper; 51 is a lamination portion; 52 is a pull handle portion; 6 is a battery core body; 61 is a groove portion; 7 is a protective plate; 8 are pole lugs.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The described embodiments are some, but not all, embodiments of the utility model.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

For example, a protective gummed paper comprises a single gummed layer, a protective paper layer and a double-sided gummed layer, wherein the single gummed layer comprises a gummed surface and a non-gummed surface, the protective paper layer is arranged on the non-gummed surface, and the double-sided gummed layer is arranged on the protective paper layer.

According to the protective gummed paper provided by the embodiment, the effect of insulating, puncture-resisting and fixing the protective plate on the battery cell can be achieved only by one gummed paper material, so that the rubberizing step is effectively reduced, and the product quality is improved.

Embodiment one:

referring to fig. 1 and 2, fig. 1 is a schematic diagram of a protective gummed paper provided in an embodiment of the present utility model, and fig. 2 is a layered schematic diagram of a protective gummed paper provided in an embodiment of the present utility model.

As shown in fig. 1, a protective adhesive tape for attaching on a battery cell, the protective adhesive tape 10 includes a single adhesive layer 1, a protective paper layer 2 and a double-sided adhesive layer 3, wherein the single adhesive layer 1 is used for attaching on the battery cell in an area without puncture risk, and can play a role of easy bending and wrapping, the protective paper layer 2 is used for corresponding to the area with puncture risk on the battery cell, so as to effectively avoid the puncture phenomenon from affecting the use of the battery cell, and the double-sided adhesive layer 3 is used for sticking a protective plate on the battery cell, so as to avoid the position deviation of the protective plate in the carrying process.

Specifically, the single adhesive layer 1 comprises a tape adhesive surface and a non-adhesive surface, the protective paper layer 2 is arranged on the non-adhesive surface, and the double-sided adhesive layer 3 is arranged on the protective paper layer.

Referring to fig. 3-7, for the process schematic diagram of attaching the protective adhesive tape 10 to the electric core, as shown in fig. 3, the electric core includes an electric core body 6, a groove portion 61 is formed on the electric core body 6, the groove portion 61 is connected with a tab 8, before connecting the protective plate 7 with the tab 8, the adhesive surface of the single adhesive layer 1 is attached to the groove portion 61 of the electric core, as shown in fig. 4, the lateral length of the single adhesive layer 1 is greater than the lateral length of the groove portion 61 of the electric core, the single adhesive layer 1 is attached to the groove portion 61 of the electric core in a centering manner, two ends of the single adhesive layer 1 protrude from two ends of the groove portion 61 respectively, then the two ends of the single adhesive layer 1 are bent, as shown in fig. 5, two ends of the groove portion 61 are wrapped, an insulating protection effect is achieved on the groove portion 61, then, referring to fig. 6, the protective plate 7 is welded to the tab 8, and then the protective plate 7 is bent to the groove portion 61 of the electric core, at this moment, the double-sided adhesive layer 3 of the protective adhesive tape 10 is located on the outer surface of the groove portion 61, as shown in fig. 4, the protective plate 3 can be located on the surface of the protective adhesive tape 10, the double-sided adhesive layer 7 can be prevented from changing between the protective plate 7 and the protective plate 1 and the groove portion 10, and the protective plate 2 can be stably processed, and the protective plate 2 can be avoided, and the protective plate 2 can be located between the protective plate and the protective plate 1 and the protective plate 2.

Embodiment two:

referring to fig. 1 and 2, the protective paper layer 2 is located at the middle position of the non-adhesive surface, and the double-sided adhesive layer 3 is stacked on the protective paper layer 2, so that the protective adhesive paper 10 still uses the single adhesive layer 1 to attach corresponding to the non-puncture risk area on the battery cell, thereby having the functions of insulation and easy bending and wrapping.

Because the single adhesive layer 1 is used for attaching the area that does not have the puncture risk on the electric core, and can play the effect of easily crooked and parcel, the protection ply 2 is used for corresponding the area that exists the puncture risk on the electric core, effectively avoid appearing puncturing the phenomenon and influence the electric core and use, the double-sided adhesive layer 3 is then used for pasting the protection shield on the electric core, avoid protection shield 7 to appear the position offset in handling, consequently, combine current electric core structure, only need with protection ply 2 locate the middle part position of no adhesive face can, need not to make protection ply 2 cover whole no adhesive face, on the one hand can effectively save material, on the other hand also can not influence the attached operation of single adhesive layer 1.

As shown in fig. 1, the two opposite ends of the single adhesive layer 1, which are located at the protective paper layer 2, are in mirror image L shapes, which plays a role in bending and wrapping, and improves the attaching stability of the protective adhesive paper.

Specifically, the L shape includes upper portion and lower part, when attaching the protective gummed paper 10 on the electric core, attach the single adhesive layer 1 in the middle on the recess portion 61 of electric core, make the L shape that the both ends mirror image of single adhesive layer 1 set up protrude in the both ends of recess portion 61 respectively, attach the upper portion of L shape to the another side of recess portion 61 with buckling downwards, then wrap up the lower part of L shape on the upper portion of L shape, here parcel effect is favorable to improving the whole attaching stability of this protective gummed paper 10, and then improve insulating, puncture-resistant and the effect of fixed protection shield to the electric core.

In some embodiments, the thickness of the protective paper layer 2 is 0.06-0.1mm, so that the puncture resistance of the protective gummed paper 10 is improved, and the thickness of the battery cell body is not influenced; the thickness of the gummed paper is 0.25-0.33mm, which not only plays the roles of insulation, puncture resistance and fixing the protective plate, but also does not influence the thickness of the battery cell body. For example, the thickness of the protective paper layer 2 is set to 0.08mm, and the thickness of the entire protective gummed paper is set to 0.28mm.

In this example, the thickness of the double-sided adhesive layer 3 is 0.13mm, the peeling force is 15N/25mm, the adhesion force of the double-sided adhesive layer 3 to the protection board is ensured, so as to improve the positioning stability of the protection board, and after high temperature and high humidity, the peeling force retention rate of the double-sided adhesive layer 3 is equal to or more than 70% of the normal temperature peeling force retention adhesion force, for example, the double-sided adhesive layer with the width of 25mm is kept for 24 hours under the environmental conditions of 1kg heavy object and 70 ℃.

The protective paper layer 2 can be made of aramid paper or dupont paper, has the advantage of high temperature resistance, is not aged after long-term use at high temperature, has high electrical property and mechanical property, comprises durable heat stability, higher flame retardance, electrical insulation, can resist corrosion of most high-concentration inorganic acid and other chemicals, and is wear-resistant and tear-resistant, and in the example, the protective paper layer is made of aramid paper.

Embodiment III:

referring to fig. 8 and 9, fig. 8 is a schematic view of a protective gummed paper provided in an embodiment of the present utility model, and fig. 9 is another layered schematic view of a protective gummed paper provided in an embodiment of the present utility model.

As shown in fig. 8 and 9, a protective adhesive tape for attaching to a battery cell, the protective adhesive tape 10 includes a single adhesive layer 1, a protective paper layer 2, a double-sided adhesive layer 3, an attaching paper 4 and a release paper 5, wherein the single adhesive layer 1 is used for attaching to a region without a puncture risk on the battery cell, and can play a role of easy bending and wrapping, the protective paper layer 2 is used for corresponding to a region with a puncture risk on the battery cell, so that the use of the battery cell is effectively prevented from being affected by the puncture phenomenon, and the double-sided adhesive layer 3 is used for adhering a protective plate on the battery cell, so as to avoid the position deviation of the protective plate in the carrying process.

Specifically, the single adhesive layer 1 comprises a tape adhesive surface and a non-adhesive surface, the protective paper layer 2 is arranged on the non-adhesive surface, the double-sided adhesive layer 3 is arranged on the protective paper layer, the release paper 5 comprises a lamination part 51 and a handle part 52 connected with the lamination part 51, the lamination part 51 is overlapped on the double-sided adhesive layer, the handle part 52 protrudes out of the double-sided adhesive layer 3, and the release paper 5 is conveniently torn off the double-sided adhesive layer 3 through the handle part 52, so that the operation convenience is improved.

Referring to fig. 4, when the protective adhesive tape 10 is used, the auxiliary paper 4 is torn off firstly, the single adhesive layer 1 is attached to the groove part 61 of the electric core in the middle, two ends of the single adhesive layer 1 protrude out of two ends of the groove part 61 respectively, then two protruding ends of the single adhesive layer 1 are bent, two ends of the groove part 61 are wrapped, an insulating protection effect is achieved on the groove part 61, referring to fig. 6, the protective plate 7 is welded to the tab 8, after the welding operation of the protective plate 7 is completed, the release paper 5 on the double-sided adhesive layer 3 is torn off, the protective plate 7 is bent to the groove part 61 of the electric core, as shown in fig. 7, namely the protective plate 7 is attached to the double-sided adhesive layer 3, the double-sided adhesive layer 3 can adhere to the protective plate 7, so that position change of the protective plate 7 in the transportation process is avoided, at this moment, the protective adhesive tape 10 between the groove part 61 and the protective plate 7 comprises the single adhesive layer 1, the protective paper layer 2 and the double-sided adhesive layer 3, the single adhesive layer 1 can play an insulating role in insulating the groove part 61 and the protective plate 7, the protective plate 2 can effectively stop the subsequent operation of the components on the protective plate 7 against the protective plate 10, and the subsequent processing of the double-sided adhesive layer 3 can be facilitated.

Embodiment four:

referring to fig. 10, fig. 10 is a schematic diagram of a battery cell according to an embodiment of the present utility model.

With reference to fig. 3-7 and fig. 10, the present application further provides a battery cell, where the battery cell includes a battery cell body 6, a protection board 7 and a protection adhesive tape 10 according to any one of the foregoing embodiments, a groove portion 61 is formed on the battery cell body 6, the groove portion 61 is connected with a tab 8, the protection board 7 is welded on the tab 8, a single adhesive layer 1 of the protection adhesive tape 10 is attached to the groove portion 61, the protection board 7 is attached to a double adhesive layer 3 of the protection adhesive tape 10, and functions of insulation, puncture resistance and protection board fixing are performed on the battery cell, so that the rubberizing step is effectively reduced and the product quality is improved.

In summary, according to the protective gummed paper and the battery cell provided by the utility model, the single gummed layer is attached to the groove part of the battery cell body, so that the groove part of the battery cell body is protected, the protective plate is adhered by the double-sided gummed layer, and the position deviation of the protective plate in the carrying process is avoided.

In the description of the present utility model, it should be understood that the terms "orientation" or "positional relationship" are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and to simplify the description, rather than to indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

Claims

1. The protective gummed paper is characterized by comprising a single gummed layer (1), a protective paper layer (2) and a double-sided gummed layer (3), wherein the single gummed layer (1) comprises a gummed surface and a non-gummed surface, the protective paper layer (2) is arranged on the non-gummed surface, and the double-sided gummed layer (3) is arranged on the protective paper layer (2);

the protective paper layer (2) is positioned in the middle of the non-adhesive surface, and the double-sided adhesive layer (3) is overlapped on the protective paper layer (2);

the adhesive paper also comprises an auxiliary paper (4) and release paper (5), the adhesive surface is arranged on the auxiliary paper (4), and the release paper (5) is arranged on the double-sided adhesive layer (3).

2. The protective gummed paper as claimed in claim 1, wherein the single gum layer (1) is provided with a mirror image L-shaped at the opposite ends of the protective paper layer (2).

3. The protective gummed paper as claimed in claim 1, characterized in that the thickness of the protective paper layer (2) is 0.06-0.1mm.

4. The protective gummed paper as set forth in claim 1, wherein said gummed paper has a thickness of 0.25-0.33mm.

5. The protective gummed paper as claimed in claim 1, wherein the peeling force of the double-sided gummed layer (3) is not less than 15N/25mm.

6. The protective gummed paper according to any one of claims 1 to 5, wherein the protective paper layer (2) is made of aramid paper or dupont paper.

7. The protective gummed paper as set forth in claim 1, wherein the release paper (5) comprises a lamination portion (51) and a handle portion (52) connected to the lamination portion (51), the lamination portion (51) is overlapped on the double-sided adhesive layer (3), and the handle portion (52) protrudes from the double-sided adhesive layer (3).

8. The battery cell is characterized by comprising a battery cell body (6), a protective plate (7) and the protective adhesive tape according to any one of claims 1-7, wherein a groove part (61) is formed on the battery cell body (6), the groove part (61) is connected with a tab (8), the protective plate (7) is connected with the tab (8), a single adhesive layer (1) of the protective adhesive tape is attached to the groove part (61), and the protective plate (7) is attached to a double adhesive layer (3) of the protective adhesive tape.