CN211829112U

CN211829112U - Improved lithium polymer battery

Info

Publication number: CN211829112U
Application number: CN202020521005.XU
Authority: CN
Inventors: 王海明; 罗皓
Original assignee: Brich Electronic Dongguan Co ltd
Current assignee: Brich Electronic Dongguan Co ltd
Priority date: 2020-04-10
Filing date: 2020-04-10
Publication date: 2020-10-30
Anticipated expiration: 2030-04-10

Abstract

The utility model discloses an improved lithium polymer battery, which comprises a battery main body and conductive cloth wrapped outside the battery main body; the conductive cloth comprises a back adhesive layer, a copper foil layer, a conductive adhesive layer and a main body layer which are sequentially stacked from inside to outside, wherein the back adhesive layer is adhered to the outer wall of the battery main body. The graphite is replaced by the copper foil, and the heat dissipation characteristic and the extension characteristic of the copper foil and the excellent conductivity of the copper foil are utilized; the copper foil is laminated with the main body layer to manufacture the copper foil conductive cloth, the copper foil is very tough and soft, the hardness of the material is not increased, and the manufacturing and production operation processes are mature; the lithium polymer battery using the copper foil conductive cloth meets the heat dissipation requirement of the product, increases the shielding property of the material and avoids the problem that the inside of the battery is easy to generate signal interference. In addition, the copper foil is easy to adhere to other materials and is not easy to delaminate, so that the production loss is reduced; and the copper foil is used for replacing graphite, so that the raw material cost can be reduced, and the product cost can be reduced.

Description

Improved lithium polymer battery

Technical Field

The utility model belongs to the technical field of the lithium cell technique and specifically relates to indicate an improvement type lithium polymer battery.

Background

In the existing lithium polymer battery, in order to dissipate heat and reduce signal interference generated inside, a graphite conductive cloth mode is used for wrapping the battery. However, the graphite of the graphite conductive cloth is fragile, so that the graphite and the conductive cloth are easily layered, and the material is easily damaged and scrapped during material production, so that the production cost of the battery using the graphite conductive cloth is higher than that of the conventional battery.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to the deficiency of the prior art, and the main objective of the present invention is to provide an improved lithium polymer battery, which effectively solves the problems of easy delamination of conductive cloth and production cost of the conventional lithium polymer battery.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an improved lithium polymer battery comprises a battery main body and conductive cloth wrapped outside the battery main body; the conductive cloth comprises a back adhesive layer, a copper foil layer, a conductive adhesive layer and a main body layer which are sequentially stacked from inside to outside, wherein the back adhesive layer is adhered to the outer wall of the battery main body.

Preferably, the main body layer is made of a non-woven fabric material, and the overall thickness of the main body layer and the conductive adhesive layer is 0.018 mm.

Preferably, the main body layer is made of a PET material, and the overall thickness of the main body layer and the conductive adhesive layer is 0.013 mm.

Preferably, the copper foil layer has a thickness of 0.006 mm.

Preferably, the thickness of the back adhesive layer is 0.005 mm.

Preferably, the copper foil layer is in a T shape.

Preferably, the copper foil layer comprises a step-shaped upper portion, a rectangular lower portion and a radially reduced connecting portion, and the connecting portion is connected between the upper portion and the lower portion.

Preferably, the main body layer is penetrated with a through hole for preventing the main body layer from tearing.

Compared with the prior art, the utility model obvious advantage and beneficial effect have, particularly, can know by above-mentioned technical scheme:

the graphite is replaced by the copper foil, and the heat dissipation characteristic and the extension characteristic of the copper foil and the excellent conductivity of the copper foil are utilized; the copper foil is laminated with the main body layer to manufacture the copper foil conductive cloth, the copper foil is very tough and soft, the hardness of the material is not increased, and the manufacturing and production operation processes are mature; the lithium polymer battery using the copper foil conductive cloth meets the heat dissipation requirement of the product, increases the shielding property of the material and avoids the problem that the inside of the battery is easy to generate signal interference. In addition, the copper foil is easy to adhere to other materials and is not easy to delaminate, so that the production loss is reduced; and the copper foil is used for replacing graphite, so that the raw material cost can be reduced, and the product cost can be reduced.

To illustrate the structural features and functions of the present invention more clearly, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is a schematic structural diagram of a first preferred embodiment of the present invention;

FIG. 2 is a front view of the conductive cloth according to the first preferred embodiment of the present invention;

fig. 3 is a front view of the conductive cloth according to the second preferred embodiment of the present invention.

The attached drawings indicate the following:

10. battery body 20 and conductive cloth

21. Back adhesive layer 22 and copper foil layer

23. Conductive adhesive layer 24, main body layer.

Detailed Description

Referring to fig. 1 to 2, a specific structure of a first preferred embodiment of the present invention is shown, which includes a battery body 10 and a conductive cloth 20 wrapped around the battery body 10.

The conductive cloth 20 includes a back adhesive layer 21, a copper foil layer 22, a conductive adhesive layer 23 and a main body layer 24, which are sequentially stacked from inside to outside, wherein the back adhesive layer 21 is adhered to the outer wall of the battery main body 10. The graphite is replaced by the pure copper foil, and the heat dissipation characteristic and the extension characteristic of the copper foil and the excellent conductivity of the copper foil are utilized; copper foil and the main body layer 24 are superposed and pressed to manufacture the copper foil conductive cloth, and the total thickness of the material can be 0.025-0.035 mm. Meanwhile, the copper foil is very tough and soft, the hardness of the material is not increased, and the manufacturing and production operation processes are mature. The lithium polymer battery using the copper foil conductive cloth meets the heat dissipation requirement of the product, increases the shielding property of the material and avoids the problem that the inside of the battery is easy to generate signal interference. In addition, the copper foil is easy to adhere to other materials and is not easy to delaminate, so that the production loss is reduced; and the copper foil is used for replacing graphite, so that the raw material cost can be reduced, and the product cost can be reduced.

In the embodiment, the main body layer 24 is a non-woven fabric material, and the overall thickness of the main body layer 24 and the conductive adhesive layer 23 is 0.018 mm; the thickness of the copper foil layer 22 is 0.006 mm; the thickness of the back glue layer is 0.005 mm. And the copper foil layer 22 is in a T shape, so that the use amount of the copper foil is effectively reduced, and the cost is reduced. The main body layer 24 is penetrated with a through hole 201 for preventing the main body layer from tearing.

Fig. 3 is a second preferred embodiment of the present invention, which has the same basic structure as the first preferred embodiment, except that:

in the embodiment, the main body layer 24 is made of PET, and the overall thickness of the main body layer 24 and the conductive adhesive layer 23 is 0.013 mm. And the copper foil layer 22 includes the step-shaped upper portion 221, the rectangular lower portion 222 and the connecting portion 223 that reduces radially, the connecting portion 223 is connected with between upper portion 221 and lower portion 222, this kind of shape has effectively reduced the use amount of copper foil, the cost is reduced, does not influence the thermal diffusivity of product simultaneously. The PET material is thinner, and the cost is lower than that of non-woven fabrics, so that the requirements of quality and cost control of products of customers can be met.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.

Claims

1. An improvement type lithium polymer battery which characterized in that: comprises a battery main body and conductive cloth wrapped outside the battery main body; the conductive cloth comprises a back adhesive layer, a copper foil layer, a conductive adhesive layer and a main body layer which are sequentially stacked from inside to outside, wherein the back adhesive layer is adhered to the outer wall of the battery main body.

2. The improved lithium poly-battery as claimed in claim 1, characterized in that: the main body layer is made of non-woven fabric materials, and the overall thickness of the main body layer and the conductive adhesive layer is 0.018 mm.

3. The improved lithium poly-battery as claimed in claim 1, characterized in that: the bulk layer is a PET material, and the bulk layer and the conductive adhesive layer are 0.013mm in overall thickness.

4. The improved lithium poly-battery as claimed in claim 1, characterized in that: the thickness of copper foil layer is 0.006 mm.

5. The improved lithium poly-battery as claimed in claim 1, characterized in that: the thickness of the back glue layer is 0.005 mm.

6. The improved lithium poly-battery as claimed in claim 1, characterized in that: the copper foil layer is T-shaped.

7. The improved lithium poly-battery as claimed in claim 1, characterized in that: the copper foil layer comprises a step-shaped upper part, a rectangular lower part and a radially reduced connecting part, and the connecting part is connected between the upper part and the lower part.

8. The improved lithium poly-battery as claimed in claim 1, characterized in that: the main body layer is provided with a through hole for preventing the main body layer from being torn.