CN212230463U

CN212230463U - Lithium battery injection molding structural part with good sealing performance

Info

Publication number: CN212230463U
Application number: CN202020147272.5U
Authority: CN
Inventors: 梁钜江; 杨大伟; 陈少翔
Original assignee: Hubei Xiang Wei New Energy Technology Co ltd
Current assignee: Hubei Xiang Wei New Energy Technology Co ltd
Priority date: 2020-01-24
Filing date: 2020-01-24
Publication date: 2020-12-25
Anticipated expiration: 2030-01-24

Abstract

A lithium battery injection molding structure with good sealing performance comprises a smooth aluminum sheet, wherein a plurality of polar column holes are formed in the smooth aluminum sheet, annular upper stop flow grooves are formed in the smooth aluminum sheet around the upper ends of the polar column holes, annular lower stop flow grooves are formed in the smooth aluminum sheet around the lower ends of the polar column holes, plastic sheets are embedded in the polar column holes and are divided into an upper plastic sheet and a lower plastic sheet, the upper plastic sheet and the lower plastic sheet are connected through polar column pipelines, annular upper stop flow rings are arranged on the lower end faces of the upper plastic sheet, annular lower stop flow rings are arranged on the upper end faces of the lower plastic sheet, the polar column pipelines are located on the inner sides of the upper stop flow rings and the lower stop flow rings, the polar column pipelines are embedded in the polar column holes, the upper stop flow rings are embedded in the upper stop flow grooves, and the lower stop flow rings are embedded in the lower stop flow; the combined part of the aluminum flake and the plastic cement has better sealing performance, and an electrolyte outflow channel is effectively blocked, so that the problem of leakage of the lithium battery is solved, and the qualification rate of the product is improved.

Description

Lithium battery injection molding structural part with good sealing performance

Technical Field

The utility model relates to a lithium cell injection moulding structure, specifically speaking are lithium cell injection moulding structure that leakproofness is good.

Background

The injection molding structure on the lithium battery has the technical requirements of good sealing performance, no liquid leakage and the like, the lithium battery structure produced in the prior art has higher sealing performance and detects unqualified phenomenon, the lithium battery finished product with the liquid leakage is researched, a large amount of electrolyte residues exist in the bonding part of plastic and smooth aluminum sheets, the bonding part of the plastic and the smooth aluminum sheets cannot be effectively sealed, so that the main reason of the liquid leakage of the lithium battery is caused, and the bonding part is not provided with a corresponding flow stopping structure, so that the root cause of the liquid leakage of the bonding part is caused.

SUMMERY OF THE UTILITY MODEL

To the problem, the utility model aims to provide a better lithium cell injection moulding structure of leakproofness.

The utility model adopts the technical proposal that: the utility model provides a lithium cell injection moulding structure that leakproofness is good, includes the light aluminum sheet, it has a plurality of utmost point post holes to open on the light aluminum sheet, and it has annular last stagnant chute to open on the light aluminum sheet all around of utmost point post hole upper end, and it has annular lower stagnant chute to open on the light aluminum sheet all around of utmost point post hole lower extreme, and a plurality of utmost point post are downthehole to have inlayed the plastic piece, the plastic piece divide into upper plastic piece and lower floor's plastic piece, through utmost point post pipe connection between upper plastic piece and the lower floor's plastic piece, the lower terminal surface of upper plastic piece is equipped with annular last stagnant flow ring down, utmost point post pipe is located the inboard of last stagnant flow ring and lower stagnant flow ring, and utmost point post pipe embedding utmost point post is downthehole, goes up in the stagnant flow ring embedding goes up the stagnant flow chute, in the stagnant flow ring embedding.

Furthermore, there are four pole holes, and two are respectively arranged on the left and right sides.

Furthermore, the upper surface of upper plastic piece is equipped with annular boss on, the lower surface of lower floor's plastic piece is equipped with annular boss down.

The utility model has the advantages and the characteristics that: the smooth aluminum sheet has better leakproofness with the plastic joint part, and the effectual electrolyte outflow passageway that has obstructed of cooperation assembly of upper and lower stagnant flow groove and upper and lower stagnant flow ring simultaneously to this solution lithium cell weeping phenomenon has improved the qualification rate of product.

Drawings

Fig. 1 is a schematic top view of a preferred embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the entire structure of FIG. 1A-A;

FIG. 3 is a schematic view of the overall structure of FIG. 2 in phantom;

fig. 4 is a schematic bottom view of the preferred embodiment of the present invention;

fig. 5 is a schematic top view of a smooth aluminum sheet according to a preferred embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view of the entire structure of the structure of FIG. 5B-B;

fig. 7 is a schematic bottom view of the aluminum flake in accordance with the preferred embodiment of the present invention;

fig. 8 is a schematic top view of a plastic sheet according to a preferred embodiment of the present invention;

FIG. 9 is a schematic cross-sectional view of the overall structure of FIG. 8C-C;

fig. 10 is a schematic bottom view of a plastic sheet according to a preferred embodiment of the present invention;

the reference numbers in the figures denote: 1-smooth aluminum sheet, 11-pole column hole, 12-upper stop flow groove, 13-lower stop flow groove, 2-plastic sheet, 21-upper plastic sheet, 211-upper stop flow ring, 212-upper boss, 22-lower plastic sheet, 221-lower stop flow ring, 222-lower boss and 23-pole pipeline.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

example 1:

referring to fig. 1 to 7, a lithium battery injection molding structure with good sealing performance includes a smooth aluminum sheet 1, the smooth aluminum sheet 1 is provided with a plurality of post holes 11, the smooth aluminum sheet 1 around the upper ends of the post holes 11 is provided with an annular upper stop flow groove 12, the smooth aluminum sheet 1 around the lower ends of the post holes 11 is provided with an annular lower stop flow groove 13, a plurality of post holes 11 are embedded with plastic sheets 2, the plastic sheets 2 are divided into an upper plastic sheet 21 and a lower plastic sheet 22, the upper plastic sheet 21 and the lower plastic sheet 22 are connected by a post pipe 23, the lower end surface of the upper plastic sheet 21 is provided with an annular upper stop flow ring 211, the upper end surface of the lower plastic sheet 22 is provided with an annular lower stop flow ring 221, the post pipe 23 is located at the inner sides of the upper stop flow ring 211 and the lower stop flow ring 221, the post pipe 23 is embedded in the post holes 11, the upper stop flow groove 211 is embedded in the upper stop flow groove 12, the lower stop ring 221 is fitted into the lower stop groove 13.

Specifically, there are four pole holes 11, and two are provided on the left and right sides, respectively.

Example 2:

referring to fig. 8 to 10, the difference from embodiment 1 is that an annular upper boss 212 is disposed on the upper surface of the upper plastic sheet 21, an annular lower boss 222 is disposed on the lower surface of the lower plastic sheet 22, and the upper and lower bosses are provided to provide stress points for easy operation in the subsequent riveting process and are pressed to fully expand the upper and lower grooves.

In the scheme, the upper dead flow groove 12 and the lower dead flow groove 13 are respectively arranged at the upper part and the lower part of the periphery of the pole hole, the upper dead flow ring 211 and the lower dead flow ring 221 are arranged at the corresponding assembly part of the plastic sheet 2, and the upper lug boss 212 and the lower lug boss 222 are respectively arranged on the upper surface and the lower surface of the plastic sheet. In the post-processing, the upper and lower surfaces of the plastic are compressed simultaneously, so that the plastic upper stop flow ring 211 and the plastic lower stop flow ring 221 are expanded to fully extrude the whole upper stop flow groove 12 and the whole lower stop flow groove 13, so that the combined part of the polished aluminum sheet 1 and the plastic has better sealing performance, and meanwhile, the upper stop flow groove 12, the lower stop flow groove 13, the upper stop flow ring 211 and the lower stop flow ring 221 are matched and assembled to effectively block an electrolyte outflow channel, thereby solving the problem of leakage of the lithium battery.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description of the above embodiments and the description is only for the purpose of illustrating the structural relationships and principles of the present invention, and that there can be various changes and modifications without departing from the spirit and scope of the present invention, and that these changes and modifications all fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a lithium cell injection moulding structure that leakproofness is good which characterized in that: comprises a smooth aluminum sheet (1), a plurality of polar column holes (11) are formed in the smooth aluminum sheet (1), an annular upper stop chute (12) is formed in the smooth aluminum sheet (1) on the periphery of the upper end of the polar column holes (11), an annular lower stop chute (13) is formed in the smooth aluminum sheet (1) on the periphery of the lower end of the polar column holes (11), plastic sheets (2) are embedded in the polar column holes (11), the plastic sheets (2) are divided into an upper plastic sheet (21) and a lower plastic sheet (22), the upper plastic sheet (21) and the lower plastic sheet (22) are connected through a polar column pipeline (23), an annular upper stop chute ring (211) is arranged on the lower end face of the upper plastic sheet (21), an annular lower stop chute ring (221) is arranged on the upper end face of the lower plastic sheet (22), the polar column pipeline (23) is positioned on the inner sides of the upper stop chute ring (211) and the lower stop chute (221), and the polar column pipeline (23) is embedded into the polar column holes (11), the upper stop ring (211) is embedded in the upper stop groove (12), and the lower stop ring (221) is embedded in the lower stop groove (13).

2. The injection-molded structure of a lithium battery with good sealing performance as claimed in claim 1, wherein: four pole holes (11) are arranged, and the left side and the right side are respectively provided with two pole holes.

3. The injection-molded structure of a lithium battery with good sealing performance as claimed in claim 2, wherein: the upper surface of upper plastic piece (21) is equipped with annular boss (212) on, the lower surface of lower floor's plastic piece (22) is equipped with annular boss (222) down.