CN215578757U

CN215578757U - Packaging structure for miniature cylindrical lithium battery

Info

Publication number: CN215578757U
Application number: CN202121992132.9U
Authority: CN
Inventors: 王正; 乔欣荣
Original assignee: Huizhou Siyang Technology Co ltd
Current assignee: Huizhou Siyang Technology Co ltd
Priority date: 2021-08-23
Filing date: 2021-08-23
Publication date: 2022-01-18
Anticipated expiration: 2031-08-23

Abstract

The utility model provides a packaging structure for a miniature cylindrical lithium battery, which comprises a shell and a pole structure, wherein the shell comprises a bottom shell and an adapter plate, the pole structure comprises a group of positive pole and negative pole which are designed on the same horizontal plane, the adapter plate is arranged above the positive pole and the negative pole, corrosion-resistant insulating glue is also arranged between the positive pole and the adapter plate and between the negative pole and the adapter plate, and the positive pole and the negative pole are connected with the adapter plate through the corrosion-resistant insulating glue. The service life is prolonged.

Description

Packaging structure for miniature cylindrical lithium battery

Technical Field

The utility model relates to the technical field of lithium batteries, in particular to a packaging structure for a miniature cylindrical lithium battery.

Background

Miniature cylinder lithium cell is button cell in order to become the applied battery form of present mainstream, its small advantage makes it can be applied to in a great deal of small-size electronic equipment, such as wireless earphone etc. and miniature cylinder battery need rely on the encapsulation subassembly as the carrier in manufacturing process, current encapsulation subassembly model is various, but the general encapsulation leakproofness that has is not enough, annotate the liquid precision and be difficult to control and lead to the battery in order exploding, the complicated installation of structure is unchangeable scheduling problem, and because structural constraint, encapsulation subassembly and protection inter-plate adoptable connected mode is limited, the range of application of product has been restricted.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provides a packaging structure for a miniature cylindrical lithium battery.

The technical scheme of the utility model is as follows:

a packaging structure for miniature cylindrical lithium batteries comprises:

the pole structure comprises a group of positive pole columns and negative pole columns which are designed on the same horizontal plane, and the adapter plate is arranged above the positive pole columns and the negative pole columns.

In the utility model, corrosion-resistant insulating glue is also arranged between the anode pole and the adapter plate and between the cathode pole and the adapter plate, and the anode pole and the cathode pole are connected with the adapter plate through the corrosion-resistant insulating glue.

Further, protruding poles are arranged on the positive pole and the negative pole, and pole hole positions corresponding to the poles are formed in the adapter plate.

In the utility model, the adapter plate is also provided with a weakening explosion-proof area.

In the utility model, the bottom of the bottom shell is provided with a liquid injection hole site.

In the utility model, a boss is arranged at the edge position of the opening of the bottom shell, and the boss is matched with the adapter plate.

Furthermore, the corrosion-resistant insulating glue is made of a hydrofluoric acid-resistant insulating material, and the positive electrode pole and the negative electrode pole are bonded with the adapter plate in a high-frequency heating mode.

Furthermore, the adapter plate and the bottom shell are welded and fixed in a laser spot welding mode.

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

according to the utility model, the assembling structure is effectively optimized through the anode pole and the cathode pole which are arranged on the same horizontal plane, so that the anode lead and the cathode lead are welded on the same plane, the process steps are simplified, various connecting modes with an external protection plate are provided, and meanwhile, the corrosion resistance is improved and the service life is prolonged while the adhesion and insulation requirements are met by adopting a corrosion-resistant insulating glue to bond the anode pole, the cathode pole and the adapter plate.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a perspective view of a packaging structure for a miniature cylindrical lithium battery according to the present invention;

FIG. 2 is an exploded view of the packaging structure for a miniature cylindrical lithium battery;

FIG. 3 is a cross-sectional view of the packaging structure for a miniature cylindrical lithium battery;

fig. 4 is a top view of the interposer.

The reference numerals are explained below:

1. a bottom case; 11. a boss; 2. an adapter plate; 21. pole hole site; 22. an explosion-proof weakened zone; 3. a positive pole column; 4. a negative electrode post; 5. corrosion resistant insulating glue.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

In order to explain the technical means of the present invention, the following description will be given by way of specific examples.

Examples

Referring to fig. 1 to 4, the present embodiment provides a package structure for a micro cylindrical lithium battery, including:

a casing and a utmost point post structure, the casing includes a drain pan 1 and an adapter plate 2, utmost point post structure includes anodal utmost point post 3 and negative terminal post 4 of a set of design on same horizontal plane, anodal utmost point post 3 and negative terminal post 4 top are located to adapter plate 2, adopt anodal utmost point post 3 and negative terminal post 4 of same horizontal plane design, can effectual reduction production join in marriage the dress degree of difficulty, all locate on adapter plate 2 simultaneously, can be through multiple mode, such as a spring, the sheetmetal, the wire etc., be connected with external protection shield, packaging structure's flexibility has been increased, reduce the joining in marriage the dress problem that probably appears in manufacturing cost and the production process.

In this embodiment, still be equipped with corrosion resistant insulating cement 5 between anodal utmost point post 3 and negative terminal post 4 and keysets 2, and anodal utmost point post 3 and negative terminal post 4 are connected with keysets 2 through corrosion resistant insulating cement 5, and corrosion resistant insulating cement 5 can satisfy the holistic corrosion resistance of effectual promotion packaging structure when the bonding is insulating, the effectual life that has prolonged, has avoided the various problems that lead to because of corroding.

Further, all be equipped with bellied utmost point post on anodal utmost point post 3 and the negative pole utmost point post 4, and adapter plate 2 sets up the utmost point post hole site 21 corresponding with utmost point post, and anodal utmost point post 3 and negative pole utmost point post 4 are joined in marriage with adapter plate 2 through seting up utmost point post hole site 21 on adapter plate 2 and are joined in marriage the dress, have further simplified and have been joined in marriage the dress flow.

In this embodiment, a weakening explosion-proof area 22 is further disposed on the adapter plate 2, and the weakening explosion-proof area 22 enables the internal pressure to have a uniform discharge port, so that the explosion direction and the explosion size of the packaging structure can be controlled under the condition of overlarge internal pressure, and the risk is effectively reduced.

In this embodiment, the bottom of the bottom case 1 is provided with a liquid injection hole.

In this embodiment, 1 opening part border position of drain pan is equipped with boss 11, and boss 11 cooperatees with keysets 2, through boss 11 and keysets 2 cooperations, further reduces the assembly degree of difficulty, optimizes the dress flow of joining in marriage, makes it can adapt to automatic assembly production line.

Further, the corrosion-resistant insulating glue 5 is made of a hydrofluoric acid-resistant insulating material, and the positive electrode post 3 and the negative electrode post 4 are bonded with the adapter plate 2 in a high-frequency heating mode.

Furthermore, the adapter plate 2 and the bottom shell 1 are welded and fixed in a laser spot welding mode, so that the whole sealing performance of the packaging structure is enhanced while the assembling process is further optimized.

While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims

1. The utility model provides a miniature cylinder packaging structure for lithium cell, its characterized in that includes a casing and a utmost point post structure, the casing includes a drain pan and an adapter plate, utmost point post structure includes anodal utmost point post and negative pole post of a set of design on same horizontal plane, the adapter plate is located anodal utmost point post and negative pole post top.

2. The packaging structure of claim 1, wherein a corrosion-resistant insulating adhesive is further disposed between the positive electrode post and the negative electrode post and the adapter plate, and the positive electrode post and the negative electrode post are connected to the adapter plate through the corrosion-resistant insulating adhesive.

3. The packaging structure of claim 1, wherein the positive electrode post and the negative electrode post are provided with protruding posts, and the adapter plate is provided with post holes corresponding to the posts.

4. The packaging structure for the miniature cylindrical lithium battery as set forth in claim 1, wherein said interposer further comprises a weakened explosion-proof region.

5. The package structure for the miniature cylindrical lithium battery as claimed in claim 1, wherein a liquid injection hole site is formed at the bottom of the bottom case.

6. The packaging structure of claim 1, wherein a boss is disposed at an edge of the opening of the bottom case, and the boss is engaged with the interposer.

7. The packaging structure of claim 2, wherein the corrosion-resistant insulating adhesive is made of a hydrofluoric acid-resistant insulating material, and the positive electrode post and the negative electrode post are bonded to the interposer by high-frequency heating.

8. The packaging structure for the miniature cylindrical lithium battery as claimed in claim 1, wherein the adapter plate and the bottom case are welded and fixed by laser spot welding.