CN216563450U

CN216563450U - Lithium ion battery tab fixing structure

Info

Publication number: CN216563450U
Application number: CN202123136299.8U
Authority: CN
Inventors: 白志勇
Original assignee: Hubei Taipu Electronic Co ltd
Current assignee: Hubei Taipu Electronic Co ltd
Priority date: 2021-12-13
Filing date: 2021-12-13
Publication date: 2022-05-17
Anticipated expiration: 2031-12-13

Abstract

The utility model belongs to the technical field of lithium ion batteries, and discloses a lithium ion battery tab fixing structure which comprises a first film, a second film and a metal band, wherein the metal band is arranged between the first film and the second film, embedded columns are fixed at two ends of one side of the first film, which faces the second film, the embedded columns are axially provided with slots, two ends of one side of the second film, which faces the first film, are provided with second embedded grooves matched with the embedded columns, the bottom of the inner part of each second embedded groove is provided with a first embedded groove, and a sealing plate is arranged in the first embedded groove. The degumming is avoided, and the stability of fixing the metal belt between the two rubber sheets is ensured.

Description

Lithium ion battery tab fixing structure

Technical Field

The utility model belongs to the technical field of lithium ion batteries, and particularly relates to a lithium ion battery tab fixing structure.

Background

The lithium ion battery is a secondary battery (rechargeable battery) which mainly depends on the movement of lithium ions between a positive electrode and a negative electrode, wherein a tab is a raw material of a lithium ion polymer battery product, the tab is a metal conductor led out from an electric core from the positive electrode and the negative electrode, the ears of the positive electrode and the negative electrode of the battery are contact points during charging and discharging, and the tabs of the battery are formed by compounding a film and a metal belt.

All bond through connecting gluey between two films of present battery utmost point ear, the live time is long after, takes place easily to come unstuck between two films, and then influences the fixed stability of strap between two films, and in addition, traditional battery utmost point ear waterproof and keep off grey performance relatively poor, and battery utmost point ear outer wall wets easily and falls the ash.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a lithium ion battery tab fixing structure, which aims to solve the problems that the two films of the traditional battery tab are bonded through connecting glue and are easy to be degummed so as to influence the fixing stability of a metal belt, and in addition, the traditional battery tab has poor waterproof and dust blocking performances.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a lithium ion battery utmost point ear fixed knot constructs, includes first film, second film and strap, the strap is installed between first film and second film, first film all is fixed with the studded column towards one side both ends of second film, the slot has been seted up to the axial of studded column, the second film all seted up the second caulking groove with studded column looks adaptation towards one side both ends of first film, first caulking groove has been seted up to the inside bottom of second caulking groove, the inside of first caulking groove is equipped with the shrouding, the shrouding is fixed with the post of inserting with slot assorted towards one side of second caulking groove.

Preferably, the lower surface wall of first film bonds and has outer sealing layer, outer sealing layer extends to the lateral wall of second film, the upper surface wall of second film bonds and has the waterproof layer, the both sides wall integrated into one piece of waterproof layer has the downward second outer lug of slope.

Preferably, a clamping groove is formed in one side, opposite to the first film, of the second film, and a buffer cushion layer is bonded to the inner surface wall of the clamping groove.

Preferably, a connecting glue layer is connected to two sides between the first film and the second film.

Preferably, the bottom ends of the two side walls of the outer sealing layer are respectively fixed with a first outer bump.

Preferably, the inner diameter of the first caulking groove is larger than the inner diameter of the second caulking groove.

Compared with the prior art, the utility model has the beneficial effects that:

(1) according to the utility model, by additionally arranging the embedded column, the slot, the inserting column and the like, when the first rubber sheet and the second rubber sheet are butted, the embedded column can be embedded into the second embedded groove, and then the sealing plate is arranged in the first embedded groove, so that the inserting column is inserted into the slot, the connection stability between the first rubber sheet and the second rubber sheet can be effectively increased, the degumming is avoided, and the stability of fixing the metal belt between the two rubber sheets is ensured.

(2) The added outer sealing layer can seal the lower port of the first caulking groove and the outer port of the first film connected with the second film, the connection stability between the first film and the second film can be further improved, the added waterproof layer can effectively prevent water and dust, the outer wall of the battery tab from being affected with damp and dust, and in addition, the second outer protruding block which is inclined downwards is convenient for dust on the waterproof layer to be swept down from the side edge.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a front view of the closure plate of the present invention;

FIG. 3 is a bottom view of the stud of the present invention;

FIG. 4 is an enlarged view of portion A of FIG. 1;

in the figure: 1. a first film; 2. a second film; 3. a clamping groove; 4. a metal strip; 5. a cushion layer; 6. embedding a column; 7. closing the plate; 8. connecting the adhesive layer; 9. an outer sealing layer; 10. a first outer bump; 11. a waterproof layer; 12. a second outer bump; 13. inserting a column; 14. a slot; 15. a first caulking groove; 16. a second caulking groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides the following technical solutions: a lithium ion battery tab fixing structure comprises a first film 1, a second film 2 and a metal band 4, wherein the metal band 4 is arranged between the first film 1 and the second film 2, studs 6 are fixed at two ends of one side of the first film 1 facing the second film 2, slots 14 are axially formed in the studs 6, second slots 16 matched with the studs 6 are formed at two ends of one side of the second film 2 facing the first film 1, a first slot 15 is formed at the bottom of the inside of the second slot 16, a sealing plate 7 is arranged inside the first slot 15, and a post 13 matched with the slot 14 is fixed at one side of the sealing plate 7 facing the second slot 16, specifically, when the first film 1 and the second film 2 are butted, the studs 6 can be embedded into the second slot 16, then the sealing plate 7 is arranged in the first slot 15, so that the posts 13 are inserted into the slots 14, and the connection stability between the first film 1 and the second film 2 can be effectively improved, the degumming is avoided, and the stability of the fixation of the metal belt 4 between the two rubber sheets is ensured.

Further, the lower surface wall of first film 1 bonds there is outer sealing 9, outer sealing 9 extends to the lateral wall of second film 2, the upper surface wall of second film 2 bonds there is waterproof layer 11, the both sides wall integrated into one piece of waterproof layer 11 has the downward second outer lug 12 of slope, concretely, outer sealing 9 seals up the lower port of first caulking groove 15 and the outer port that first film 1 is connected with second film 2, can further increase the stability of connecting between first film 1 and second film 2, waterproof layer 11 that adds can effectively waterproof and keep off the ash, avoid battery tab outer wall to wet and the ash that falls, secondly, the downward second outer lug 12 of slope is convenient for the dust on the waterproof layer 11 to sweep down from the side.

Further, the clamping grooves 3 are formed in the opposite sides of the first rubber sheet 1 and the second rubber sheet 2, the buffer cushion layer 5 is bonded to the inner surface wall of each clamping groove 3, the two clamping grooves 3 are combined to form an area for placing the metal belt 4, and the additionally arranged buffer cushion layer 5 can improve the compression resistance of the metal belt 4 and avoid compression deformation of the metal belt.

Further, both sides between first film 1 and the second film 2 are connected with connection glue film 8, and connection glue film 8 is the glue solution layer, further reinforces the connection between first film 1 and the second film 2 through gluing.

Further, the bottom ends of the two side walls of the outer sealing layer 9 are respectively fixed with a first outer protruding block 10, the first outer protruding blocks 10 can be bent, when the tab is installed in the battery, the first outer protruding blocks 10 can increase the contact area with the battery, and further the stability of the tab fixation is increased.

Further, the inner diameter of the first caulking groove 15 is larger than that of the second caulking groove 16, and the inner diameter of the first caulking groove 15 is large, so that the sealing plate 7 can be prevented from passing through the second caulking groove 16.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a lithium ion battery utmost point ear fixed knot constructs which characterized in that: including first film (1), second film (2) and strap (4), install between first film (1) and second film (2) strap (4), first film (1) all is fixed with between studded column (6) towards one side both ends of second film (2), slot (14) have been seted up to the axial of studded column (6), second film (2) all set up second caulking groove (16) with studded column (6) looks adaptation towards one side both ends of first film (1), first caulking groove (15) have been seted up to the inside bottom of second caulking groove (16), the inside of first caulking groove (15) is equipped with shrouding (7), shrouding (7) are fixed with slot (14) assorted inserted column (13) towards one side of second caulking groove (16).

2. The lithium ion battery tab fixing structure of claim 1, characterized in that: the lower surface wall bonding of first film (1) has outer seal (9), outer seal (9) extend to the lateral wall of second film (2), the upper surface wall bonding of second film (2) has waterproof layer (11), the both sides wall integrated into one piece of waterproof layer (11) has the second outer lug (12) of slope decurrent.

3. The lithium ion battery tab fixing structure of claim 2, characterized in that: the clamping groove (3) is formed in one side, opposite to the first rubber sheet (1) and the second rubber sheet (2), of the clamping groove (3), and the buffer cushion layer (5) is bonded to the inner surface wall of the clamping groove (3).

4. The lithium ion battery tab fixing structure of claim 3, characterized in that: and two sides between the first rubber sheet (1) and the second rubber sheet (2) are connected with a connecting rubber layer (8).

5. The lithium ion battery tab fixing structure of claim 4, wherein: and first outer bumps (10) are fixed at the bottom ends of two side walls of the outer sealing layer (9).

6. The lithium ion battery tab fixing structure of claim 5, characterized in that: the inner diameter of the first caulking groove (15) is larger than that of the second caulking groove (16).