CN218586294U - Adhesive paper structure for battery and battery - Google Patents
Adhesive paper structure for battery and battery Download PDFInfo
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- CN218586294U CN218586294U CN202222468010.0U CN202222468010U CN218586294U CN 218586294 U CN218586294 U CN 218586294U CN 202222468010 U CN202222468010 U CN 202222468010U CN 218586294 U CN218586294 U CN 218586294U
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- battery
- adhesive tape
- base material
- substrate
- utmost point
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model belongs to the technical field of battery production and manufacture, in particular to a gummed paper structure for a battery and a battery, which comprises a gummed paper body, wherein the gummed paper body comprises a base material and a glue layer; the base material is used for covering a tab of a battery; the glue layers are arranged on two sides of the bottom surface of the base material at intervals; when the tab is in a mounting state, at least one part of the base material is exposed on the bottom surface of the adhesive tape body and is attached to the tab through bending. The utility model discloses an optimize the adhesive tape structure, can reduce utmost point ear position thickness to reduce the holistic thickness of electric core.
Description
Technical Field
The utility model belongs to the technical field of battery production manufacturing, concretely relates to gummed paper structure and battery for battery.
Background
The lithium ion battery as a novel secondary battery has the advantages of large energy density and power density, high working voltage, light weight, small volume, long cycle life, good safety, environmental protection and the like, and has wide application prospect in the aspects of portable electric appliances, electric tools, large-scale energy storage, electric traffic power supplies and the like.
At present, the energy density of a battery cell is higher and higher, and the thickness of the internal space of the battery cell needs to be further compressed and reduced so as to improve the energy density. The analysis is carried out to present electric core, and it is thick mainly for utmost point ear position thickness.
Because utmost point ear position welding utmost point ear, simultaneously for guaranteeing the security, at utmost point ear both sides rubberizing, prevent that utmost point ear burr from puncturing the diaphragm and leading to the short circuit, the stack of thickness direction leads to utmost point ear position than other position thickness great.
SUMMERY OF THE UTILITY MODEL
One of the purposes of the utility model lies in: to prior art's not enough, provide a gummed paper structure for battery, through optimizing the gummed paper structure, can reduce utmost point ear position thickness to reduce the holistic thickness of electric core.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a gummed paper structure for a battery comprises a gummed paper body, wherein the gummed paper body comprises a base material and a gummed layer; the base material is used for covering a tab of a battery; the glue layers are arranged on two sides of the bottom surface of the base material at intervals; when the tab is in a mounting state, at least one part of the base material is exposed on the bottom surface of the adhesive tape body and is attached to the tab through bending.
Preferably, two ends of the base material exposed on the bottom surface of the adhesive tape body are provided with bending parts.
Preferably, the substrate and the glue layer enclose a through groove structure.
Preferably, the edge of one end of the substrate is aligned with the edge of one end of the glue line.
Preferably, the substrate and the glue layer are of an integrated structure.
Preferably, the size of the glue layer is smaller than the size of the substrate.
Preferably, the thickness of substrate is 10 ~ 12um, the thickness of glue film is 4 ~ 6um.
Preferably, the thickness of the adhesive tape body is 10-20 um.
Preferably, the ratio of the length of the glue layer to the length of the substrate is 0.25 to 0.5.
A second object of the utility model is to provide a battery, including pole piece and foretell adhesive tape structure for battery, the surface of pole piece is provided with utmost point ear, and the substrate covers utmost point ear, glue film bond in the both sides of utmost point ear.
The beneficial effects of the utility model reside in that, the utility model discloses divide into substrate and glue film with the adhesive tape body, the bottom surface both sides at the substrate are established at the glue film interval, the glue film does not cover the substrate completely, the mid portion of substrate exposes in the middle of the bottom surface of adhesive tape body, when bonding utmost point ear, the increase part of utmost point ear position thickness only is the thickness of substrate, compare current structure, the utmost point ear position's utmost point ear does not have the glue film, the mid portion of adhesive tape body only remains the substrate promptly, can reduce utmost point ear position thickness, help reducing the holistic thickness of electric core, wherein, the substrate accessible of the mid portion of adhesive tape body is buckled, form the concave structure of laminating utmost point ear, can match the shape at the top of utmost point ear, help reducing utmost point ear position thickness. The utility model discloses an optimize the adhesive tape structure, can reduce utmost point ear position thickness to reduce the holistic thickness of electric core.
Drawings
Features, advantages and technical effects of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
Fig. 1 is a schematic view of the installation state of the adhesive tape body of the present invention.
Fig. 2 is a schematic structural view of the adhesive tape body of the present invention before installation.
Fig. 3 is the coating and slitting schematic diagram of the adhesive tape body of the utility model.
Wherein the reference numerals are as follows:
1-gummed paper body;
2-a substrate; 21-a bending part;
3-glue layer;
4-pole ear;
5-pole piece.
Detailed Description
As some terms are used throughout the description and claims to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect.
Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, detachable connections, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The present invention will be described in further detail with reference to fig. 1 to 3, but the present invention is not limited thereto.
Implementation mode one
Embodiment one will be described with reference to fig. 1
The gummed paper structure for the battery comprises a gummed paper body 1, wherein the gummed paper body 1 comprises a base material 2 and a glue layer 3; the base material 2 is used for covering a tab 4 of a battery; the glue layers 3 are arranged at two sides of the bottom surface of the base material 2 at intervals; wherein, when in the installation state, at least a part of the substrate 2 is exposed on the bottom surface of the adhesive tape body 1, and is attached to the tab 4 by bending.
Because utmost point ear position welding utmost point ear, simultaneously for guaranteeing the security, at utmost point ear both sides rubberizing, prevent that utmost point ear burr from puncturing the diaphragm and leading to the short circuit, thickness direction's stack, lead to utmost point ear position than other position thickness great, therefore, divide into substrate 2 and glue film 3 with adhesive tape body 1, the bottom surface both sides at substrate 2 are established at the glue film 3 interval, glue film 3 does not cover substrate 2 completely, the mid portion of substrate 2 exposes in the middle of adhesive tape body 1's bottom surface, when bonding utmost point ear 4, the increase part of utmost point ear position thickness only is the thickness of substrate 2, compare current structure, utmost point ear position's utmost point ear 4 does not have glue film 3, the mid portion of adhesive tape body 1 only remains substrate 2 promptly, can reduce utmost point ear position thickness, help reducing the holistic thickness of electric core, wherein, substrate 2 accessible of the mid portion of adhesive tape body 1 is buckled, form the concave structure of laminating utmost point ear 4, can match the shape at the top of utmost point ear 4, help reducing utmost point ear position thickness.
In this embodiment, glue film 3 forms on the surface of substrate 2 through the coating, adopts similar zebra-stripe line formula coating, coats 3 intervals of glue film on the surface of substrate 2, cuts the time, cuts along the direction that the coil stock was cut, obtains both sides rubber coating, the middle adhesive tape body 1 that only has substrate 2, and the glue film 3 of adhesive tape body 1 both sides bonds with pole piece 5 around the utmost point ear position together, reduces adhesive tape body 1 and takes place the probability that drops.
In the adhesive tape structure for a battery according to the present invention, the two ends of the base material 2 exposed on the bottom surface of the adhesive tape body 1 are provided with the bending portions 21. When the tab is mounted, the bent portion 21 is inclined, one end of the bent portion 21 is connected to the middle portion of the substrate 2, the other end of the bent portion 21 is connected to one side portion of the substrate 2, so that the top of the tab 4 can be attached, and before mounting, the bent portion 21 is flush with the middle portion of the substrate 2.
According to the utility model discloses an among the adhesive tape structure for battery, substrate 2 and glue film 3 enclose into logical groove structure, and is concrete, and the lateral wall that leads to the groove encloses for glue film 3, and the bottom that leads to the groove and the contact at utmost point ear 4 tops play fixed and insulating utmost point ear 4's effect.
According to the utility model discloses an in the adhesive tape structure for battery, the edge of the one end of substrate 2 and the edge of the one end of glue film 3 align, and the glue film 3 at the both ends of substrate 2 is the symmetry setting, nevertheless the utility model discloses do not so limit, the size of glue film 3 can be adjusted according to actual battery structure.
According to the utility model discloses an in the adhesive tape structure for battery, substrate 2 and glue film 3 adopt the integral type structure, can directly paste adhesive tape body 1 at utmost point ear 4, help improving rubberizing efficiency.
The utility model discloses a theory of operation is:
divide into substrate 2 and glue film 3 with adhesive tape body 1, the bottom surface both sides at substrate 2 are established at the 3 intervals of glue film, glue film 3 does not cover substrate 2 completely, the mid portion of substrate 2 exposes in the middle of adhesive tape body 1's bottom surface, when bonding utmost point ear 4, the increase part of utmost point ear position thickness is only substrate 2's thickness, compare current structure, utmost point ear position's utmost point ear 4 does not have glue film 3, the mid portion of adhesive tape body 1 only remains substrate 2 promptly, can reduce utmost point ear position thickness, help reducing the holistic thickness of electric core, wherein, substrate 2 accessible of the mid portion of adhesive tape body 1 is buckled, form the concave structure of laminating utmost point ear 4, can match the shape at utmost point ear 4's top, help reducing utmost point ear position thickness.
Second embodiment
The difference from the first embodiment is that: the area of the glue layer 3 of the embodiment is smaller than that of the substrate 2, the substrate 2 without the glue layer 3 is formed at the position for contacting the tab 4, the thickness of the substrate 2 is 10-12 um, and the thickness of the glue layer 3 is 4-6 um. For example, the thickness of the substrate 2 may be 10um, 11um or 12um, etc., so as to avoid the situation that the thickness of the tab position is too large, and the thickness of the glue layer 3 is 4um, 5um or 6um, etc., which is not limited in this embodiment.
Other structures are the same as those of the first embodiment, and are not described herein again.
Third embodiment
The difference from the first embodiment is that: the thickness of the adhesive tape body 1 of the present embodiment is 10 to 20um, for example, the thickness of the adhesive tape body 1 is 10um, 11um, 12um, 13um, 14um, 15um, 16um, 17um, 18um, 19um or 20um, etc., which avoids the situation that the thickness of the tab position is too large, the ratio of the length of the adhesive layer 3 to the length of the substrate 2 is 0.25 to 0.5, which can be adjusted according to the type of the actual adhesive layer 3, and this embodiment does not limit this.
Other structures are the same as those of the first embodiment, and are not described herein again.
Battery with a battery cell
The utility model discloses an embodiment one ~ three is used for adhesive tape structure of battery.
The battery tab comprises a pole piece 5 and the gummed paper structure for the battery, wherein a tab 4 is arranged on the surface of the pole piece 5, a base material 2 covers the tab 4, and a glue layer 3 is bonded on two sides of the tab 4.
The battery also comprises a battery cell, wherein the battery cell can comprise at least two pole pieces 5 which are mutually overlapped and have opposite polarities, and the pole pieces with opposite polarities respectively form a positive pole piece of the battery and a negative pole piece of the battery. In order to avoid short circuit between the positive and negative pole pieces, a diaphragm is arranged between every two adjacent pole pieces, and the pole pieces with opposite polarities are electrically isolated by the diaphragm. At least one of the pole pieces may be a pole piece as in the above embodiments.
The at least two pole pieces may include a first pole piece and a second pole piece, the first pole piece and the second pole piece have opposite polarities, and the first pole piece and the second pole piece are stacked on each other.
Specifically, the first pole piece may be a positive pole piece, and the second pole piece may be a negative pole piece; alternatively, the first pole piece may be a negative pole piece, and the second pole piece may be a positive pole piece, which is not limited herein.
In some examples, the cells may be wound cells. The first pole piece, the diaphragm and the second pole piece which are sequentially stacked are wound around a winding center to form a winding structure.
In other examples, the cells may be laminated cells. The first pole pieces are multiple, the second pole pieces are multiple, the multiple first pole pieces and the multiple second pole pieces are sequentially arranged in a staggered and stacked mode along the same direction, and a diaphragm is arranged between every two adjacent first pole pieces and every two adjacent second pole pieces, so that the first pole pieces and the second pole pieces are electrically insulated.
Variations and modifications to the above-described embodiments may become apparent to those skilled in the art from the disclosure and teachings of the above description. Therefore, the present invention is not limited to the above-mentioned embodiments, and any obvious modifications, replacements or variations made by those skilled in the art on the basis of the present invention belong to the protection scope of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (10)
1. The gummed paper structure for the battery is characterized by comprising a gummed paper body (1), wherein the gummed paper body (1) comprises a base material (2) and a glue layer (3);
the base material (2) is used for covering a tab (4) of a battery;
the glue layers (3) are arranged on two sides of the bottom surface of the base material (2) at intervals;
when the adhesive tape is in a mounting state, at least one part of the base material (2) is exposed on the bottom surface of the adhesive tape body (1) and is attached to the tab (4) through bending.
2. The adhesive tape structure for a battery according to claim 1, wherein: bending parts (21) are arranged at two ends of the base material (2) exposed on the bottom surface of the adhesive tape body (1).
3. The adhesive tape structure for a battery according to claim 1, wherein: the base material (2) and the glue layer (3) enclose to form a through groove structure.
4. The adhesive tape structure for a battery according to claim 1, wherein: the edge of one end of the base material (2) is aligned with the edge of one end of the glue layer (3).
5. The adhesive tape structure for a battery according to claim 1, wherein: the base material (2) and the glue layer (3) are of an integrated structure.
6. The adhesive tape structure for a battery according to claim 1, wherein: the area of the glue layer (3) is smaller than that of the base material (2).
7. The adhesive tape structure for a battery according to claim 1, wherein: the thickness of substrate (2) is 10 ~ 12um, the thickness of glue film (3) is 4 ~ 6um.
8. The adhesive tape structure for a battery according to claim 1, wherein: the thickness of the adhesive tape body (1) is 10-20 um.
9. The adhesive tape structure for a battery according to claim 1, wherein: the ratio of the length of the glue layer (3) to the length of the base material (2) is 0.25-0.5.
10. A battery, characterized by: the gummed paper structure for the battery comprises a pole piece (5) and the gummed paper structure for the battery as claimed in any one of claims 1 to 9, wherein a pole lug (4) is arranged on the surface of the pole piece (5), a base material (2) covers the pole lug (4), and a gummed layer (3) is adhered to two sides of the pole lug (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222468010.0U CN218586294U (en) | 2022-09-19 | 2022-09-19 | Adhesive paper structure for battery and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222468010.0U CN218586294U (en) | 2022-09-19 | 2022-09-19 | Adhesive paper structure for battery and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218586294U true CN218586294U (en) | 2023-03-07 |
Family
ID=85364424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222468010.0U Active CN218586294U (en) | 2022-09-19 | 2022-09-19 | Adhesive paper structure for battery and battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218586294U (en) |
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2022
- 2022-09-19 CN CN202222468010.0U patent/CN218586294U/en active Active
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