CN213242682U

CN213242682U - Lithium ion battery structure assembly

Info

Publication number: CN213242682U
Application number: CN202021748317.0U
Authority: CN
Inventors: 张前兵; 周双; 高广贺; 王永军; 周德清
Original assignee: Anhui Yijiatong Battery Co ltd
Current assignee: Anhui Yijiatong Battery Co ltd
Priority date: 2020-08-20
Filing date: 2020-08-20
Publication date: 2021-05-18
Anticipated expiration: 2030-08-20

Abstract

The utility model discloses a lithium ion battery structure component, which belongs to the technical field of lithium ion batteries, and comprises a battery cover plate, a pole column, an explosion-proof device and an aluminum shell, wherein the battery cover plate is provided with a cover plate hole, the pole column consists of a sealing part and an external leading-out part, the pole column extends into the battery cover plate through the cover plate hole, the external leading-out part is exposed outside the lithium ion battery, the external leading-out part comprises a negative leading-out piece and a positive leading-out piece, the negative leading-out piece and the positive leading-out piece are respectively provided with a negative end piece and a positive end piece, and the positive end piece and the negative end piece are respectively fixed on the battery cover plate through rivets; through setting up insulating seal ring as sealing part to be provided with and seal up to cooperate when external leading-out terminal runs through the apron on the battery apron downthehole, and then can guarantee the leakproofness when external leading-out terminal extends aluminum hull and battery apron, effectively avoid revealing, simple structure, it is sealed effectual.

Description

Lithium ion battery structure assembly

Technical Field

The utility model belongs to the technical field of lithium ion battery, concretely relates to lithium ion battery structure subassembly.

Background

A lithium ion battery is a secondary battery, also called a rechargeable battery, which mainly relies on the movement of lithium ions between a positive electrode and a negative electrode, and Li + is inserted and extracted back and forth between the two electrodes during the charging and discharging process: during charging, Li + is extracted from the positive electrode and is inserted into the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state; when the battery is discharged, the lithium ion battery is used for mobile phones and notebook computers, and is commonly called as a lithium battery, the battery generally adopts a material containing lithium elements as an electrode, and is a representative of modern high-performance batteries, and the real lithium battery is very rarely applied to daily electronic products due to high danger.

The existing lithium ion battery assembly has a complex structure, the sealing effect between the battery cover plate and the aluminum shell cannot be well guaranteed when an external leading-out terminal is led out, and the lithium ion battery is poor in safety performance due to the lack of a necessary explosion-proof protection device.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lithium ion battery structure subassembly, through being provided with inner seal circle, outer seal pad and insulating seal ring to cooperation explosion-proof equipment uses, more complicated with the current lithium ion battery subassembly structure of proposing among the above-mentioned background art of solution, the sealed effect between battery apron and the aluminum hull can not obtain fine guarantee when externally leading-out terminal draws forth, and lack necessary explosion-proof protection device on the lithium ion battery, the relatively poor problem of security performance.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a lithium ion battery structure subassembly, includes battery apron, utmost point post, explosion-proof equipment and aluminum hull, the apron hole has been seted up on the battery apron, utmost point post is drawn forth the part by seal part, outer and is constituteed, utmost point post by the apron hole stretches into in the battery apron, it is outside that the part is exposed in lithium ion battery to draw forth the part outward, draw forth the part outward and draw forth piece and anodal piece including the negative pole, the negative pole is drawn forth piece and anodal and is drawn forth piece and be provided with negative pole end piece and anodal end piece on the piece respectively, anodal end piece and negative pole end piece pass through fix with rivet respectively on the battery apron, seal part with the sealed cooperation in apron hole, seal part includes insulating seal ring.

Adopt above-mentioned scheme, as sealed part through setting up insulating seal ring, and be provided with and seal up the cooperation and seal up when external leading-out terminal runs through the apron on the battery apron downthehole, and then can guarantee the leakproofness when external leading-out terminal extends aluminum hull and battery apron, effectively avoid revealing, moreover, the steam generator is simple in structure, it is sealed effectual, through setting up explosion-proof equipment, utilize explosion-proof piece and explosion-proof valve and protection paster as explosion-proof equipment, effectively avoid the explosion possibility in the lithium ion battery use, promote the safety in-use guarantee, reach best result of use.

As a preferred embodiment, the plastic sealing gasket further comprises a lower plastic sheet, an inner sealing ring, an outer sealing gasket and an outer leading-out terminal, the inner sealing ring is annular, the lower plastic sheet, the inner sealing ring, the sealing part and the cover plate hole are mutually overlapped in the direction vertical to the pole column, the inner surface of the cover plate hole is contacted with the outer surface of the inner sealing ring, and the inner surface of the cover plate hole compresses the inner sealing ring, the outer sealing gasket is square, the outer sealing gasket is sleeved on the outer surface of the outer leading-out terminal and is contacted with the battery cover plate, the outer sealing gasket is located between the battery cover plate and the outer leading-out terminal, the outer sealing gasket and the battery cover plate are mutually overlapped in the axial direction of the pole, and the outer leading-out terminal compresses the outer sealing gasket on the battery cover plate.

By adopting the scheme, the inner sealing ring is attached to the inner wall of the cover plate hole, the outer sealing ring covers the outer surface of the outer leading-out terminal, so that the outer leading-out terminal has good sealing performance when penetrating through the cover plate hole and between the outer leading-out terminal and the battery cover plate, the phenomenon of leakage of the inner and outer communication is effectively avoided, and the sealing effect is good.

In a preferred embodiment, the lower plastic sheet, the inner sealing ring and the outer sealing gasket are made of electrolyte-resistant and high-temperature-resistant materials.

By adopting the scheme, the lower plastic sheet inner sealing ring and the outer sealing pad which are made of electrolyte-resistant and high-temperature-resistant materials are arranged, so that the corrosion of the electrolyte to the lower plastic sheet inner sealing ring and the lower plastic sheet outer sealing pad in the use process of the lithium ion battery and the damage of heat generated in the working process to the lower plastic sheet inner sealing ring and the outer sealing pad are effectively avoided, and the service lives of the lower plastic sheet inner sealing ring, the lower.

In a preferred embodiment, the battery cover plate is made of a steel or aluminum material.

By adopting the scheme, the service life of the battery cover plate is prolonged by using the good structural performance of the steel material or the aluminum material as the battery cover plate.

As a preferred embodiment, the explosion-proof device comprises an explosion-proof sheet, the explosion-proof sheet is mounted on a battery cover plate, and an explosion-proof valve and a protection patch matched with the explosion-proof valve are arranged on the battery cover plate.

By adopting the scheme, the explosion-proof device is provided with the explosion-proof piece and the explosion-proof valve, so that the possibility of explosion in the use process of the lithium ion battery is effectively prevented, and the explosion-proof effect is good.

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

the lithium ion battery structural component is provided with the insulating sealing washer as a sealing part, and the inner sealing washer and the outer sealing washer are matched to seal when the external leading-out terminal penetrates through the cover plate hole on the battery cover plate, so that the sealing performance of the external leading-out terminal when extending out of the aluminum shell and the battery cover plate can be ensured, the leakage is effectively avoided, the structure is simple, and the sealing effect is good;

this lithium ion battery structure subassembly utilizes explosion-proof piece and explosion-proof valve and protection paster as explosion-proof equipment through setting up explosion-proof equipment, effectively avoids the explosion possibility in the lithium ion battery use, promotes the safety in utilization guarantee, reaches best result of use.

Drawings

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

fig. 2 is a schematic structural view of the aluminum shell of the present invention;

fig. 3 is a schematic structural diagram of the battery cover plate of the present invention.

In the figure: 1. a battery cover plate; 2. an insulating gasket; 3. riveting; 4. a negative electrode lead-out sheet; 5. an explosion-proof sheet; 6. a protective patch; 7. an aluminum shell; 8. a positive terminal piece; 9. and (5) discharging plastic sheets.

Detailed Description

The present invention will be further described with reference to the following examples.

The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention. The condition in the embodiment can be further adjusted according to concrete condition the utility model discloses a it is right under the design prerequisite the utility model discloses a simple improvement of method all belongs to the utility model discloses the scope of claiming.

Please refer to fig. 1-3, the utility model provides a lithium ion battery structure subassembly, including battery apron 1, utmost point post, explosion-proof equipment and aluminum hull 7, the apron hole has been seted up on the battery apron 1, utmost point post is by sealing part, draw forth the part outward and constitute, utmost point post stretches into in the battery apron 1 by the apron hole, it is outside that the part is exposed in lithium ion battery outward to draw forth the part outward, draw forth the part including the negative pole and draw forth piece 4 and anodal, the negative pole is drawn forth and is provided with negative pole end piece and anodal end piece 8 on piece 4 and the anodal extraction piece respectively, anodal end piece 8 and negative pole end piece are fixed on battery apron 1 through rivet 3 respectively, sealing part and apron hole seal cooperation, sealing part includes insulating seal ring 2.

The battery cover plate 1 is made of a steel or aluminum material (see fig. 1 and 3); by providing a steel or aluminum material as the battery cover plate 1, the service life of the battery cover plate 1 is extended by utilizing the excellent structural properties possessed by the steel or aluminum material.

The battery cover plate structure further comprises a lower plastic sheet 9, an inner sealing ring, an outer sealing gasket and an outer leading-out terminal, wherein the inner sealing ring is annular, the lower plastic sheet 9, the inner sealing ring, a sealing part and a cover plate hole are mutually overlapped in the direction perpendicular to the pole, the inner surface of the cover plate hole is mutually contacted with the outer surface of the inner sealing ring, the inner surface of the cover plate hole tightly presses the inner sealing ring, the outer sealing gasket is square, the outer sealing gasket is sleeved on the outer surface of the outer leading-out terminal, the outer sealing gasket is contacted with the battery cover plate 1, the outer sealing gasket is positioned between the battery cover plate 1 and the outer leading-out terminal, the outer sealing gasket and the battery cover plate 1 are mutually overlapped in the; through setting up the laminating of inner seal circle and apron downthehole wall, the external seal cover is drawn forth the terminal surface outward, and then can make the terminal of drawing forth outward have good leakproofness between running through the apron hole and the battery apron 1, effectively avoid the phenomenon that inside and outside intercommunication was revealed, sealed effectual.

The lower plastic sheet 9, the inner sealing ring and the outer sealing pad are all made of electrolyte-resistant and high-temperature-resistant materials (see figure 3); the lower plastic sheet 9 inner sealing ring and the outer sealing gasket which are made of electrolyte-resistant and high-temperature-resistant materials are arranged, so that the corrosion of the electrolyte to the lower plastic sheet 9 and the damage of the electrolyte to the lower plastic sheet and the outer sealing gasket caused by heat generated during working in the use process of the lithium ion battery are effectively avoided, and the service lives of the lower plastic sheet, the lower plastic sheet and the outer sealing gasket are.

In addition, the explosion-proof device comprises an explosion-proof sheet 5, the explosion-proof sheet 5 is arranged on the battery cover plate 1, and the battery cover plate 1 is provided with an explosion-proof valve and a protection patch 6 (see fig. 1 and 3) matched with the explosion-proof valve; the explosion-proof device is provided with the explosion-proof sheet 5 and the explosion-proof valve, so that the possibility of explosion in the use process of the lithium ion battery is effectively prevented, and the explosion-proof effect is good.

When using, utilize insulating seal ring 2 as sealing part, and be provided with interior sealing washer and outer sealing washer cooperation and seal when external leading-out terminal runs through the apron on the battery apron 1 downthehole, and then can guarantee the leakproofness when external leading-out terminal extends aluminum hull 7 and battery apron 1, effectively avoid revealing, moreover, the steam generator is simple in structure, it is sealed effectual, utilize explosion-proof piece 5 and explosion-proof valve and protection paster 6 as explosion-proof equipment, effectively avoid the explosion possibility in the lithium ion battery use, promote the safety in utilization guarantee, reach best result of use.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A lithium ion battery structural component, characterized in that: including battery apron (1), utmost point post, explosion-proof equipment and aluminum hull (7), the apron hole has been seted up on battery apron (1), the utmost point post is drawn forth the part by seal portion, outer and constitutes, utmost point post by the apron hole stretches into in battery apron (1), it exposes in the lithium ion battery outside to draw forth the part outward, draw forth the part outward and draw forth piece (4) and anodal piece of drawing forth including the negative pole, the negative pole is drawn forth piece (4) and anodal and is drawn forth and be provided with negative pole end piece and anodal end piece (8) on the piece respectively, anodal end piece (8) and negative pole end piece are fixed on battery apron (1) through rivet (3) respectively, seal portion with the sealed cooperation of apron hole, seal portion includes insulating seal ring (2).

2. The lithium ion battery structural assembly of claim 1, wherein: also comprises a lower plastic sheet (9), an inner sealing ring, an outer sealing gasket and an outer leading-out terminal, wherein the inner sealing ring is annular, the lower plastic sheet (9), the inner sealing ring, the sealing part and the cover plate hole are mutually overlapped in the direction vertical to the pole column, the inner surface of the cover plate hole is contacted with the outer surface of the inner sealing ring, and the inner surface of the cover plate hole compresses the inner sealing ring, the outer sealing gasket is square, the outer sealing gasket is sleeved on the outer surface of the outer leading-out terminal and is contacted with the battery cover plate (1), the outer sealing gasket is positioned between the battery cover plate (1) and the outer leading-out terminal, the outer sealing gasket and the battery cover plate (1) are mutually overlapped in the axial direction of the pole, and the outer leading-out terminal presses the outer sealing gasket to the battery cover plate (1).

3. The lithium ion battery structural assembly of claim 2, wherein: the lower plastic sheet (9), the inner sealing ring and the outer sealing gasket are all made of electrolyte-resistant and high-temperature-resistant materials.

4. The lithium ion battery structural assembly of claim 1, wherein: the battery cover plate (1) is made of a steel or aluminum material.

5. The lithium ion battery structural assembly of claim 1, wherein: the explosion-proof device comprises an explosion-proof sheet (5), wherein the explosion-proof sheet (5) is installed on a battery cover plate (1), and an explosion-proof valve and a protection patch (6) matched with the explosion-proof valve are arranged on the battery cover plate (1).