CN212625719U

CN212625719U - High-capacity lithium polymer battery with protective plate transversely arranged and stably contacted

Info

Publication number: CN212625719U
Application number: CN202021213008.3U
Authority: CN
Inventors: 王海明; 罗皓
Original assignee: Brich Electronic Dongguan Co ltd
Current assignee: Brich Electronic Dongguan Co ltd
Priority date: 2020-06-28
Filing date: 2020-06-28
Publication date: 2021-02-26
Anticipated expiration: 2030-06-28

Abstract

The utility model discloses a high-capacity lithium polymer battery with a protective plate transversely placed and stably contacted, which comprises an electric core, a circuit board, a protective plate, an anti-corrosion block and an aluminum plastic film; a convex part extends upwards from the top surface of the battery cell, and an installation station is formed beside one side of the convex part; two polar ears connected with the battery cell are horizontally arranged on one side of the convex part and extend into the mounting station; the circuit board is provided with a horizontal protection part, and the horizontal protection part extends into the mounting station, is flatly placed on the two pole lugs and is welded and fixed with the two pole lugs; the protective plate is horizontally and transversely attached to the upper surface of the horizontal protective part; the anti-corrosion block is arranged on the bottom surface of the installation station and is positioned between the battery cell and the horizontal protection part. Through violently putting horizontal protection portion and protection shield level in the top surface of electric core and with the utmost point ear stable connection on the electric core, compare that traditional protection portion and protection shield are vertical to be placed, horizontal cross-under has reduced occupation space, can make the top of electric core do longer to the capacity that makes electric core is bigger.

Description

High-capacity lithium polymer battery with protective plate transversely arranged and stably contacted

Technical Field

The utility model belongs to the technical field of the lithium polymer battery and specifically relates to indicate a high capacity lithium polymer battery that protection shield is horizontal and contact is stable.

Background

Polymer lithium ion batteries have been increasingly favored by the industry and customers due to their higher safety and higher mass energy density.

The lithium polymer battery comprises a battery cell, a circuit board and a protective plate, wherein the circuit board is provided with a protective part, and the protective part is welded with a lug on the top of the battery cell; the protective plate is attached to the protective part; but traditional protection portion and protection shield are vertical arrangement in electric core top, and vertical arrangement occupation space is big, is unfavorable for that electric core does longer.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model discloses to the disappearance that prior art exists, its main objective provides a protection shield is horizontal and contacts stable high capacity lithium polymer battery, and it has effectively solved protection portion and protection shield and is vertical arranging in electric core top, and vertical occupation space of arranging is big, is unfavorable for the longer problem that electric core was done.

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

a high-capacity lithium polymer battery with a protective plate transversely placed and stably contacted comprises a battery core, a circuit board, the protective plate, an anti-corrosion block and an aluminum plastic film; a convex part extends upwards from the top surface of the battery cell, and an installation station is formed beside one side of the convex part; two polar ears connected with the battery cell are arranged on one side of the convex part and extend into the mounting station; the circuit board is provided with a horizontal protection part, and the horizontal protection part extends into the mounting station, is flatly placed on the two pole lugs and is welded and fixed with the two pole lugs; the protective plate is horizontally and transversely attached to the upper surface of the horizontal protective part; the anti-corrosion block is arranged on the bottom surface of the installation station and is positioned between the battery cell and the horizontal protection part; the aluminum-plastic film is wrapped outside the battery cell, and the horizontal protection part, the protection plate and the corrosion prevention block are all positioned in the aluminum-plastic film.

Preferably, the surfaces of the convex part, the protection plate and the corrosion prevention block are pasted with insulating gummed paper.

Preferably, the protective plate is made of FR4 material.

As a preferred scheme, the anti-corrosion block is made of EVA materials.

As a preferred scheme, the outer surface of the aluminum-plastic film is pasted with insulating gummed paper aiming at the position of the installation station.

Preferably, the horizontal protection part is connected with the two pole lugs through a connecting sheet respectively; each connecting sheet is folded in half to form an upper sheet and a lower sheet, an elastic inserting cavity for inserting the corresponding pole lug is formed between the upper sheet and the lower sheet, the two pole lugs are inserted into the corresponding elastic inserting cavities, and the inner walls of the elastic inserting cavities elastically abut against the upper surface and the lower surface of the pole lugs; the upper surface of each upper sheet is welded with the horizontal protection part.

As a preferable scheme, the two polar ears respectively comprise a base part extending upwards from the top surface of the convex part, a first extension part integrally bent downwards and extending from the upper end of the base part, a second extension part integrally bent upwards and extending from the lower end of the first extension part, and a plug part bent from the upper end of the second extension part and extending horizontally outwards; the inserting part is inserted into the elastic inserting cavity for contact connection; a first elastic deformation space is formed between the first extension part and the base part; a second elastic deformation space is formed between the second extension part and the first extension part.

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

through violently putting horizontal protection portion and protection shield level in the top surface of electric core and with the utmost point ear stable connection on the electric core, compare that traditional protection portion and protection shield are vertical to be placed, horizontal cross-under has reduced occupation space, can make the top of electric core do longer to the capacity that makes electric core is bigger.

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 perspective view of a preferred embodiment of the present invention;

FIG. 2 is an exploded view of the preferred embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a cross-sectional view of a preferred embodiment of the present invention;

FIG. 5 is a partial enlarged view at B in FIG. 4;

fig. 6 is a perspective view of a connecting piece in a preferred embodiment of the present invention.

The attached drawings indicate the following:

10. cell 11, convex part

12. Tab 121 and base

122. First extension part 123, second extension part

124. Plug-in part 101, installation station

102. First elastic deformation space 103 and second elastic deformation space

20. Circuit board 21 and horizontal protection part

30. Protection plate 40, anti-corrosion block

50. Aluminum plastic film 61 and insulating adhesive paper

62. Insulating adhesive paper 70, connecting sheet

71. Upper piece 72, lower piece

701. An elastic plug cavity.

Detailed Description

Referring to fig. 1 to 6, a specific structure of a preferred embodiment of the invention is shown, which includes a battery cell 10, a circuit board 20, a protection plate 30, a corrosion-proof block 40 and an aluminum plastic film 50.

A convex portion 11 extends upward from the top surface of the battery cell 10, and a mounting station 101 is formed beside one side of the convex portion. And two polar ears 12 connected with the battery cell are horizontally arranged on one side of the convex part 11, and the two polar ears 12 extend into the mounting station 101.

The circuit board 20 has a horizontal protection portion 21, and the horizontal protection portion 21 extends into the mounting station 101 to be flatly placed on the two tabs 12 and fixed with the two tabs 12 by welding. This protection shield 30 level is violently laminated in the upper surface of horizontal protection portion 21, and through violently putting setting horizontal protection portion 21 and protection shield 30 level, compare the vertical placement of traditional horizontal protection portion 21 and protection shield 30, the horizontal has transversely reduced occupation space, can make the top of electric core 10 do longer to the capacity that makes electric core 10 is bigger. In this embodiment, the protection plate 30 is made of FR4 material, but may be made of other materials, without limitation.

The anticorrosion block 40 is disposed on the bottom surface of the installation station 101 and located between the battery cell 10 and the horizontal protection portion 21, and prevents corrosion liquid in the battery cell 10 from corroding the horizontal protection portion 21. In the present embodiment, the corrosion prevention block 40 is an EVA material; the surfaces of the convex part 11, the protection plate 30 and the corrosion prevention block 40 are coated with an insulating adhesive tape 61 for fixing and insulating.

The aluminum-plastic film 50 is wrapped outside the battery cell 10, and the horizontal protection portion 21, the protection plate 30 and the corrosion prevention block 40 are all located in the aluminum-plastic film 50. And the outer surface of the aluminum-plastic film 50 is pasted with the insulating gummed paper 62 at the position corresponding to the installation station 101.

The horizontal protection part 21 is connected with the two pole ears 12 through a connecting sheet 70; each connecting piece 70 is folded in half to form an upper piece 71 and a lower piece 72, an elastic inserting cavity 701 for inserting the corresponding pole lug is formed between the upper piece 71 and the lower piece 72, the two pole lugs 12 are inserted into the corresponding elastic inserting cavities 701, and the inner walls of the elastic inserting cavities 701 elastically abut against the upper surface and the lower surface of the pole lugs 12. The upper surface of each upper sheet 71 is welded to the horizontal guard portion 21.

The two pole ears 12 each include a base 121 extending upward from the top surface of the protrusion 11, a first extension 122 extending by bending downward integrally from the upper end of the base, a second extension 123 extending by bending upward integrally from the lower end of the first extension, and an insertion part 124 extending horizontally outward by bending from the upper end of the second extension, the insertion part 124 is inserted into the elastic insertion cavity 701 for contact connection, and when the insertion part 124 is inserted into the elastic insertion cavity 701, the elastic insertion cavity 701 is elastically deformed, thereby ensuring the smooth insertion of the insertion part 124. A first elastic deformation space 102 is formed between the first extension part 122 and the base part 121; a second elastic deformation space 103 is formed between the second extension 123 and the first extension 122. The second elastic deformation space 103 and the first elastic deformation space 102 are designed to ensure that the first extension part 122 and the second extension part 123 deform when the inserting part 124 is inserted into the elastic contact cavity 701, thereby preventing the inserting part 124 from being broken due to hard insertion.

The utility model discloses a design focus lies in: through violently putting horizontal protection portion and protection shield level in the top surface of electric core and with the utmost point ear stable connection on the electric core, compare that traditional protection portion and protection shield are vertical to be placed, horizontal cross-under has reduced occupation space, can make the top of electric core do longer to the capacity that makes electric core is bigger.

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. A high-capacity lithium polymer battery with a protective plate transversely arranged and stably contacted is characterized in that: comprises a battery cell, a circuit board, a protective plate, an anti-corrosion block and an aluminum plastic film; a convex part extends upwards from the top surface of the battery cell, and an installation station is formed beside one side of the convex part; two polar ears connected with the battery cell are horizontally arranged on one side of the convex part and extend into the mounting station; the circuit board is provided with a horizontal protection part, and the horizontal protection part extends into the mounting station, is flatly placed on the two pole lugs and is welded and fixed with the two pole lugs; the protective plate is horizontally and transversely attached to the upper surface of the horizontal protective part; the anti-corrosion block is arranged on the bottom surface of the installation station and is positioned between the battery cell and the horizontal protection part; the aluminum-plastic film is wrapped outside the battery cell, and the horizontal protection part, the protection plate and the corrosion prevention block are all positioned in the aluminum-plastic film.

2. The high capacity lithium-polymer battery with protective plate lateral and contact stabilization of claim 1, wherein: and the surfaces of the convex part, the protection plate and the anticorrosion block are stuck with insulating gummed paper.

3. The high capacity lithium-polymer battery with protective plate lateral and contact stabilization of claim 1, wherein: the protective plate is made of FR4 material.

4. The high capacity lithium-polymer battery with protective plate lateral and contact stabilization of claim 1, wherein: the anti-corrosion block is made of EVA materials.

5. The high capacity lithium-polymer battery with protective plate lateral and contact stabilization of claim 1, wherein: and the outer surface of the aluminum-plastic film is pasted with insulating gummed paper aiming at the position of the installation station.

6. The high capacity lithium-polymer battery with protective plate lateral and contact stabilization of claim 1, wherein: the horizontal protection part is connected with the two pole lugs through connecting pieces respectively; each connecting sheet is folded in half to form an upper sheet and a lower sheet, an elastic inserting cavity for inserting the corresponding pole lug is formed between the upper sheet and the lower sheet, the two pole lugs are inserted into the corresponding elastic inserting cavities, and the inner walls of the elastic inserting cavities elastically abut against the upper surface and the lower surface of the pole lugs; the upper surface of each upper sheet is welded with the horizontal protection part.

7. The high capacity lithium-polymer battery with lateral and contact stabilization of the protective plate of claim 6, wherein: the two polar lugs respectively comprise a base part extending upwards from the top surface of the convex part, a first extension part integrally bent and extending downwards from the upper end of the base part, a second extension part integrally bent and extending upwards from the lower end of the first extension part, and a plug-in part bent from the upper end of the second extension part and extending horizontally outwards; the inserting part is inserted into the elastic inserting cavity for contact connection; a first elastic deformation space is formed between the first extension part and the base part; a second elastic deformation space is formed between the second extension part and the first extension part.