CN212967855U

CN212967855U - Secondary cell's continuous type utmost point post assembly structure

Info

Publication number: CN212967855U
Application number: CN202022268102.5U
Authority: CN
Inventors: 何波; 张彪; 张男
Original assignee: Xiamen Haichen New Energy Technology Co Ltd
Current assignee: Xiamen Hithium Energy Storage Technology Co Ltd
Priority date: 2020-10-13
Filing date: 2020-10-13
Publication date: 2021-04-13
Anticipated expiration: 2030-10-13

Abstract

The utility model discloses a continuous pole post assembly structure of a secondary battery, which comprises a top cover plate provided with a pole post hole, a pole post assembly arranged in the pole post hole and lower plastic provided with the pole post hole, wherein the pole post assembly comprises a plastic part and a pole post part; an annular boss is arranged around the periphery of the pole hole of the top cover plate, and the plastic part is wrapped on the annular boss; the pole part sequentially penetrates through the pole hole of the lower plastic and the pole hole of the top cover plate, and the pole part is fixed on the top cover plate through the plastic part. The utility model discloses can improve battery top cap stability when simplifying the top cap structure to reduce the manufacturing cost of battery, improve the stability of utmost point post, thereby strengthen the compressive property and the anti torsion performance of utmost point post, and improve the space utilization of battery.

Description

Secondary cell's continuous type utmost point post assembly structure

Technical Field

The utility model belongs to the technical field of the battery top cap, especially, relate to a secondary battery's continuous type utmost point post assembly structure.

Background

A secondary battery is a rechargeable battery such as a nickel-cadmium battery or a nickel-hydrogen battery, which has wide applications in many fields. Many known secondary batteries have a cap assembly.

Among the present roof module, the mode of fixed utmost point post commonly used does: the top cover plate is provided with a through hole; during assembly, the pole base body part is located below the top cover plate, the extending part is fixed by the clamp spring or in a riveting mode after penetrating through the through hole, and the pole is fixed on the top cover plate in the mode.

At present, secondary battery top covers on the market are mostly assembled by adopting a riveting structure or a ceramic snap spring injection molding structure similar to the riveting structure. However, the existing method at least has the following defects: the mechanical structural parts are more, and the top cover has a complex structure, so that the cost is increased; the stability of the pole is poor, and the compression resistance and torsion resistance of the pole are poor; the height of the top cover pole is higher, the utilization rate of the internal space of the battery is lower, and the utilization space of the module is lower.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough of prior art method, the utility model aims to provide a secondary battery's continuous type utmost point post assembly structure can improve battery top cap stability when simplifying top cap structure to reduce the manufacturing cost of battery, improve the stability of utmost point post, thereby strengthen the compressive property and the antitorque commentaries on classics performance of utmost point post, and improve the space utilization of battery.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a continuous pole assembling structure of a secondary battery comprises a top cover plate provided with a pole hole, a pole component installed in the pole hole and lower plastic provided with the pole hole, wherein the pole component comprises a plastic part and a pole part; an annular boss is arranged around the periphery of the pole hole of the top cover plate, and the plastic part is wrapped on the annular boss; the pole part sequentially penetrates through the pole hole of the lower plastic and the pole hole of the top cover plate, and the pole part is fixed on the top cover plate through the plastic part.

Further, the annular boss comprises an annular peripheral wall, the bottom of the annular peripheral wall is fixedly arranged at the periphery of the pole column hole of the top cover plate, and the annular peripheral wall is wrapped in the plastic part. An upward pulling force is formed by wrapping the top of the annular peripheral wall through the plastic part, so that an inverted pulling structure is formed, and the stability of fixing the pole on the top cover plate and the compression resistance of the pole are greatly improved.

Furthermore, the annular peripheral wall is of an inclined structure with the top portion being folded inwards towards the center, and the diameter of the top opening of the annular peripheral wall is smaller than that of the bottom opening of the annular peripheral wall. Through the big-end-up annular perisporium of plastic part parcel, improved the steadiness of back-pull connection structure, improved utmost point post fixed stability on the lamina tecti and the crushing resistance of utmost point post greatly.

Further, the longitudinal direction of the annular peripheral wall is of a bending structure. The stability is improved.

Further, at least one glue flowing port is formed in the annular boss. The plastic part fills the gap at the position of the glue flowing port, so that the torsion resistance of the pole part is greatly improved.

Furthermore, a plurality of glue flowing openings are arranged on the annular boss at equal intervals.

Furthermore, the bottom of the annular boss and the top cover plate are of an integrated punch forming structure.

Further, utmost point post subassembly still includes the sealing washer, the sealing washer presss from both sides and establishes between plastic part and annular boss and utmost point post part downside, utmost point post part passes the sealing washer, and utmost point post part bottom compresses tightly down plastic and sealing washer. The pole part is arranged in the pole hole through a sealing ring, so that the pole part is in close contact with the top cover plate to form a sealing structure.

Further, the pole part comprises a column body and a bottom plate, and the column body is arranged on the bottom plate.

Further, be provided with the draw-in groove on the cylinder lateral wall, the inside wall and the mutual block of draw-in groove of plastic part to fix utmost point post part on the lamina tecti through plastic part. The stability of the fixation of the pole part is improved.

The beneficial effects of the technical scheme are as follows:

the utility model discloses can improve battery top cap stability when simplifying the top cap structure to reduce the manufacturing cost of battery, improve the stability of utmost point post, thereby strengthen the compressive property and the anti torsion performance of utmost point post, and improve the space utilization of battery.

The utility model discloses in set up annular boss through utmost point post hole circumferencial surrounding formula, round around the utmost point post hole, make its intensity increase, the plastic part card of moulding plastics goes into utmost point post part wall all around and in the space between the lamina tecti, make the plastic part of moulding plastics form injection structure in utmost point post part and lamina tecti clearance department, wrap up annular boss through the plastic part and form an ascending pulling force, constitute the back-pull structure, improved the stability of utmost point post subassembly fixed on the lamina tecti and the crushing resistance of utmost point post greatly.

Drawings

Fig. 1 is a partial structural schematic view of a continuous type pole assembling structure of a secondary battery according to the present invention;

fig. 2 is a top schematic view of a continuous type pole assembling structure of a secondary battery according to the present invention;

FIG. 3 is a schematic structural view of an annular boss in an embodiment of the present invention;

fig. 4 is a schematic structural view of a pole part in an embodiment of the present invention;

wherein, 1 is a top cover plate, 2 is a plastic part, 3 is a pole part, 4 is a sealing ring, 5 is lower plastic, 6 is an annular boss, and 7 is a glue flowing port; 31 is a post, 32 is a bottom plate, and 33 is a card slot.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention is further explained below with reference to the accompanying drawings.

In this embodiment, referring to fig. 1 to 3, a continuous pole assembling structure of a secondary battery includes a top cover plate 1 provided with a pole hole, a pole assembly installed in the pole hole, and a lower plastic 5 provided with the pole hole, where the pole assembly includes a plastic part 2 and a pole part 3; an annular boss 6 is arranged around the periphery of the pole hole of the top cover plate 1, and the plastic part 2 is wrapped on the annular boss 6; the pole part 3 sequentially penetrates through a pole hole of the lower plastic 5 and a pole hole of the top cover plate 1, and the pole part 3 is fixed on the top cover plate 1 through the plastic part 2.

As an optimized solution 1 of the above embodiment, the annular boss 6 includes an annular peripheral wall, the bottom of the annular peripheral wall is fixedly disposed at the periphery of the pole hole of the top cover plate 1, and the annular peripheral wall is wrapped in the plastic part 2.

Preferably, the annular peripheral wall is of an inclined structure with the top portion being retracted inwards, and the top opening diameter of the annular peripheral wall is smaller than the bottom opening diameter of the annular peripheral wall.

Preferably, the longitudinal direction of the annular peripheral wall is of a bent structure.

As an optimized solution 2 of the above embodiment, as shown in fig. 3, at least one glue flow opening 7 is provided on the annular boss 6.

Preferably, a plurality of glue flow openings 7 are arranged on the annular boss 6 at equal intervals.

Preferably, the bottom of the annular boss 6 and the top cover plate 1 are of an integral punch forming structure.

As the optimization scheme 3 of the above embodiment, the post component further includes a sealing ring 4, the sealing ring 4 is clamped between the plastic part 2 and the annular boss 6 and the lower side of the post component 3, the post component 3 penetrates through the sealing ring 4, and the bottom of the post component 3 is compressed by the plastic 5 and the sealing ring 4.

As an optimization 4 of the above embodiment, as shown in fig. 4, the pole part 3 includes a column 31 and a bottom plate 32, and the column 31 is disposed on the bottom plate 32.

The side wall of the column body 31 is provided with a clamping groove 33, and the inner side wall of the plastic part 2 is clamped with the clamping groove 33, so that the pole part 3 is fixed on the top cover plate 1 through the plastic part 2.

For better understanding, the utility model discloses, following is to the theory of operation of the utility model make a complete description:

the pole part 3 sequentially penetrates through a pole hole of the lower plastic 5 and a pole hole of the top cover plate 1, and the pole part 3 is fixed on the top cover plate 1 through the plastic part 2. Set up annular boss 6 through utmost point post hole circumference surrounding type, around utmost point post hole circumference round, make its intensity increase, mould plastics 2 card and go into 3 walls of utmost point post part all around and the top apron between the space between 1, make the plastics of moulding plastics 2 form injection structure in utmost point post part 3 and top apron 1 clearance department, improved utmost point post subassembly fixed stability and utmost point post subassembly compressive resistance on top apron 1 greatly.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A continuous pole assembling structure of a secondary battery is characterized by comprising a top cover plate (1) provided with a pole hole, a pole component installed in the pole hole and lower plastic (5) provided with the pole hole, wherein the pole component comprises a plastic part (2) and a pole part (3); an annular boss (6) is arranged around the periphery of the pole hole of the top cover plate (1), and the plastic part (2) is wrapped on the annular boss (6); the pole part (3) sequentially penetrates through a pole hole of the lower plastic (5) and a pole hole of the top cover plate (1), and the pole part (3) is fixed on the top cover plate (1) through the plastic part (2).

2. The continuous type pole assembly structure of a secondary battery as claimed in claim 1, wherein the annular boss (6) comprises an annular peripheral wall, the bottom of which is fixedly disposed at the periphery of the pole hole of the top cover plate (1), and the annular peripheral wall is wrapped in the plastic member (2).

3. The continuous type pole assembling structure of a secondary battery as claimed in claim 2, wherein the annular peripheral wall is a slanted structure with a top portion thereof being inwardly tapered toward a center, and a top opening diameter of the annular peripheral wall is smaller than a bottom opening diameter of the annular peripheral wall.

4. The continuous type pole assembling structure of a secondary battery as claimed in claim 3, wherein the longitudinal direction of the annular peripheral wall is a bent structure.

5. The continuous type pole assembling structure of a secondary battery as claimed in any one of claims 1 to 4, wherein at least one tap hole (7) is provided on said annular boss (6).

6. The continuous type pole assembly structure of a secondary battery as claimed in claim 5, wherein a plurality of tap holes (7) are provided at equal intervals on the annular boss (6).

7. The continuous type pole assembling structure of the secondary battery according to claim 1, wherein the bottom of the annular boss (6) and the top cover plate (1) are of an integrally formed structure.

8. The continuous pole assembling structure of the secondary battery according to claim 1, wherein the pole assembly further comprises a sealing ring (4), the sealing ring (4) is clamped between the plastic part (2) and the annular boss (6) and the lower side of the pole part (3), the pole part (3) penetrates through the sealing ring (4), and the bottom of the pole part (3) is compressed to form the lower plastic (5) and the sealing ring (4).

9. The continuous pole assembly structure of a secondary battery according to claim 1, wherein the pole member (3) comprises a cylinder (31) and a base plate (32), the cylinder (31) being disposed on the base plate (32).

10. The structure of claim 9, wherein a locking groove (33) is formed on the sidewall of the cylindrical body (31), and the inner sidewall of the plastic member (2) is engaged with the locking groove (33), so that the post member (3) is fixed to the top cover plate (1) by the plastic member (2).