CN212991173U

CN212991173U - Independent pole assembling structure of secondary battery

Info

Publication number: CN212991173U
Application number: CN202022268103.XU
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: 2021-04-16
Anticipated expiration: 2030-10-13

Abstract

The utility model discloses an independent post assembling structure of a secondary battery, which comprises a top cover plate provided with a post hole, a post component arranged in the post hole and lower plastic provided with the post hole, wherein the post component comprises a plastic part and a post part; a boss assembly is arranged at the periphery of the pole column hole of the top cover plate, and the plastic part is wrapped on the boss assembly; 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

Independent pole assembling structure of secondary battery

Technical Field

The utility model belongs to the technical field of the battery top cap, especially, relate to a secondary battery's stand alone 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 stand alone 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: an independent pole assembling structure of a secondary battery comprises a top cover plate provided with a pole hole, lower plastic provided with the pole hole, and a pole assembly arranged in the pole hole, wherein the pole assembly comprises a plastic part and a pole part; a boss assembly is arranged at the periphery of the pole hole of the top cover plate, and the plastic part is wrapped on the boss assembly; 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 boss assembly comprises a plurality of boss single bodies, and each boss single body is arranged around the pole hole at intervals in a surrounding mode. A plurality of boss monomers are wrapped by the plastic part to form an upward pulling force, so that an inverted pulling structure is formed, and the stability of fixing the pole assembly on the top cover plate and the compression resistance of the pole assembly are greatly improved.

Further, the boss assembly comprises a plurality of boss single bodies, and each boss single body is arranged around the pole hole at equal intervals in a surrounding mode. The stress is more uniform, the stability is improved, and the stability of the pole component fixed on the top cover plate and the compression resistance of the pole component are greatly improved.

Further, the boss monomer is the tapered platform big end down, the tapered platform parcel is in the plastic part, tapered platform bottom and top cap board utmost point post hole's peripheral fixed connection. Through big-end-up's conical form platform of plastic part parcel, improved the steadiness of back-pull connection structure, improved utmost point post subassembly fixed stability on the lamina tecti greatly and utmost point post subassembly crushing resistance.

Furthermore, the cross section of each boss single body in the boss assembly is arched, and the combined boss single bodies annularly surround the pole column hole.

Further, the pole component also comprises a sealing ring which is clamped between the plastic part and the lower sides of the boss component and the pole component; the pole part penetrates through the sealing ring, and the bottom of the pole part is compressed with the lower plastic and the sealing ring. 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.

Further, the clamping groove is a continuous annular clamping groove or a discontinuous annular clamping groove formed along the circumferential direction of the side wall of the cylinder.

Further, the column body and the bottom plate are located on the same central axis.

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 through set up boss subassembly around the top cap plate utmost point post hole, the plastic part card of moulding plastics goes into utmost point post wall all around and in the space between the lamina tecti, makes the plastic part of moulding plastics form a big end down injection structure in utmost point post and lamina tecti clearance department, wraps up boss subassembly through the plastic part and forms an ascending pulling force, constitutes the structure of drawing backwards, has 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 an independent post assembling structure of a secondary battery according to the present invention;

fig. 2 is a general explosion diagram of an assembly structure of a stand-alone post of a secondary battery according to the present invention;

FIG. 3 is a layout view of a boss assembly according to 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, and 6 is a boss component; 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. 1-2, an independent post assembly structure of a secondary battery includes a top cover plate 1 provided with a post hole, a lower plastic 5 provided with a post hole, and a post assembly installed in the post hole, where the post assembly includes a plastic part 2 and a post part 3; a boss assembly 6 is arranged at the periphery of the pole hole of the top cover plate 1, and the plastic part 2 is wrapped on the boss assembly 6; the pole part 3 sequentially penetrates through the pole hole of the lower plastic 5 and the 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 boss assembly 6 includes a plurality of boss single bodies, and each boss single body is disposed around the pole hole at intervals. A plurality of boss monomers are wrapped by the plastic part to form an upward pulling force, so that an inverted pulling structure is formed, and the stability of fixing the pole assembly on the top cover plate and the compression resistance of the pole assembly are greatly improved.

As an optimized solution 2 of the above embodiment, the boss assembly 6 includes a plurality of boss single bodies, and each boss single body is disposed around the pole hole at equal intervals. The stress is more uniform, and the pull-down stability is improved, so that the stability of the pole component fixed on the top cover plate and the compression resistance of the pole component are greatly improved.

Preferably, the boss monomer is big-end-up's toper type platform, the toper type platform parcel is in plastic part 2, toper type platform bottom and the peripheral fixed connection in 1 utmost point post hole of lamina tecti.

Preferably, as shown in fig. 3, each boss unit in the boss assembly 6 has an arched cross section, and the boss units are combined to form a ring around the pole hole.

As an optimized proposal 3 of the above embodiment, the pole assembly further comprises a sealing ring 4, and the sealing ring 4 is clamped between the plastic part 2 and the boss assembly 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 by the lower 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.

As a preferred embodiment 5 of the above embodiment, as shown in fig. 4, a locking groove 33 is provided on a side wall of the column body 31, and the inner wall of the plastic part 2 is engaged with the locking groove 33, so that the pole member 3 is fixed to the top cover plate 1 through the plastic part 2. The stability of the fixation of the pole part is improved.

Preferably, the locking groove 33 is a continuous annular locking groove or an intermittent annular locking groove formed along the circumferential direction of the side wall of the cylinder 31.

Preferably, the column 31 and the bottom plate 32 are located on the same central axis.

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. Through 6 fan-shaped structures of boss subassembly around utmost point post hole, the plastic part 2 card of moulding plastics is gone into utmost point post wall all around and in the space between the lamina tecti 1, makes the plastic part 2 of moulding plastics form a big end down injection structure in utmost point post and 1 clearance department of lamina tecti, has improved the stability of utmost point post subassembly fixed on lamina tecti 1 and the compressive resistance of utmost point post subassembly 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. An independent pole assembling structure of a secondary battery is characterized by comprising a top cover plate (1) provided with a pole hole, lower plastic (5) provided with the pole hole and a pole component arranged in the pole hole, wherein the pole component comprises a plastic part (2) and a pole part (3); a boss component (6) is arranged at the periphery of the pole hole of the top cover plate (1), and the plastic part (2) is wrapped on the boss component (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 secondary battery free-standing pole assembling structure according to claim 1, wherein the boss assembly (6) comprises a plurality of boss units, and each boss unit is arranged around the pole hole at intervals.

3. The secondary battery free-standing pole assembling structure according to claim 1, wherein the boss assembly (6) comprises a plurality of boss units, and each boss unit is arranged around the pole hole at equal intervals.

4. The secondary battery independent pole assembling structure according to claim 2 or 3, wherein the boss single body is a tapered platform with a large upper part and a small lower part, the tapered platform is wrapped in the plastic part (2), and the bottom end of the tapered platform is fixedly connected with the periphery of the pole hole of the top cover plate (1).

5. The secondary battery free-standing pole assembling structure according to claim 4, wherein each boss unit in the boss assembly (6) has an arch-shaped cross section, and the boss units are combined to form a ring shape to surround the pole hole.

6. The secondary battery freestanding pole assembly structure of claim 1, wherein the pole assembly further comprises a sealing ring (4), the sealing ring (4) is interposed between the plastic part (2) and the boss assembly (6) and the underside 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).

7. A freestanding pole assembly structure of a secondary battery as claimed in claim 1, wherein the pole member (3) includes a cylindrical body (31) and a base plate (32), the cylindrical body (31) being disposed on the base plate (32).

8. The structure of claim 7, wherein a slot (33) is formed on the sidewall of the column (31), and the inner sidewall of the plastic part (2) is engaged with the slot (33), so that the post member (3) is fixed to the top cover plate (1) via the plastic part (2).

9. The secondary battery freestanding pole assembly structure of claim 8, wherein the locking groove (33) is a continuous annular locking groove or an intermittent annular locking groove formed along a circumferential direction of a sidewall of the cylindrical body (31).

10. The structure of claim 7, wherein the post (31) and the base plate (32) are located on the same central axis.