CN219575779U

CN219575779U - Battery top cover assembly and battery thereof

Info

Publication number: CN219575779U
Application number: CN202321185453.7U
Authority: CN
Inventors: 徐敖奎
Original assignee: Nantong Ningyuan Automation Technology Co ltd
Current assignee: Nantong Ningyuan Automation Technology Co ltd
Priority date: 2023-05-16
Filing date: 2023-05-16
Publication date: 2023-08-22
Anticipated expiration: 2033-05-16

Abstract

The utility model discloses a battery top cover assembly, which comprises a top cover plate, electrodes, a sealing ring, a welding fixing piece, a fixing ring and a back plate, wherein a pair of through holes are formed in the top cover plate, a pair of mounting holes are formed in the back plate, the sealing ring and the mounting holes comprise inner rings protruding outwards, the inner rings are respectively embedded and mounted above and below the through holes, a plurality of positioning protruding points are formed in the bottom of the fixing ring, a plurality of positioning holes are formed in the periphery of the through holes, the positioning holes correspond to the positioning protruding points one by one, the positioning protruding points are embedded in the positioning holes to be pressed and fixed, the electrodes are placed in the fixing ring, the two are integrated through an injection molding process, the welding fixing piece is provided with a protruding welding part, the welding part is embedded in the through holes, and is welded with the bottom of the electrodes through laser welding. The utility model adopts the sealing ring and the backboard to reduce the risk of short circuit of the battery; the design of integrating the fixing ring and the electrode is adopted, so that the fixing and the installation are convenient, the installation process is optimized, and the laser welding is adopted for fixing, so that the production process is optimized.

Description

Battery top cover assembly and battery thereof

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery top cover assembly and a battery thereof.

Background

Only adopt the sealing washer to carry out insulating isolation in the traditional battery top cap subassembly, but after long-term use, the sealing washer is ageing damaged easily, easily causes the short circuit, adopts friction welding's mode to fix electrode and welded fastening piece simultaneously, and the technological requirement is high and leads to production efficiency low.

Disclosure of Invention

The present utility model is directed to a battery top cap assembly that overcomes the shortcomings and drawbacks of the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a battery top cap subassembly, includes lamina tecti, electrode, sealing washer and welded fastening spare, and its innovation point lies in: the sealing ring and the mounting hole comprise an outer convex inner ring, the inner ring is respectively embedded and mounted above and below the through hole, the back plate is located below the top cover plate, a plurality of positioning protruding points are arranged at the bottom of the fixing ring, a plurality of positioning holes are formed in the periphery of the through hole, the positioning holes and the positioning protruding points are in one-to-one correspondence, the positioning protruding points are embedded into the positioning holes to be pressed and fixed, the electrodes are placed in the fixing ring, the sealing ring and the mounting hole are integrated through an injection molding process, the welding fixing piece is provided with a convex welding part, the welding part is embedded into the through hole and is located in the mounting hole and the insulating ring, and the welding part is welded with the bottom of the electrode through laser welding.

Further, the electrode comprises a positive electrode and a negative electrode, wherein the bottom of the positive electrode is a negative electrode copper plate, the bottom of the negative electrode is a negative electrode aluminum plate, and the negative electrode copper plate and the negative electrode aluminum plate are welded with a welding part of the welding fixing piece through laser welding.

Further, the inner wall of the fixed ring is provided with a plurality of limiting protrusions, the outer wall of the electrode is provided with a plurality of limiting grooves, and the limiting grooves and the limiting protrusions are in one-to-one correspondence and are matched with each other.

Further, the welding parts of the welding fixing pieces are in interference fit with the sealing rings and the mounting holes.

A battery is characterized in that: including the battery top cap subassembly.

After the structure is adopted, the utility model has the beneficial effects that:

the utility model adopts the sealing ring and the backboard to reduce the risk of short circuit of the battery; the design of integrating the fixing ring and the electrode is adopted, so that the fixing and the installation are convenient, the installation process is optimized, and the laser welding is adopted for fixing, so that the production process is optimized.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is an exploded view of the present utility model;

FIG. 3 is a cross-sectional view of the present utility model;

fig. 4 is a schematic structural view of the fixing ring and the electrode in the present utility model.

Reference numerals illustrate:

the device comprises a top cover plate 1, an electrode 2, a sealing ring 3, a welding fixing piece 4, a fixing ring 5, a back plate 6, a through hole 7, a mounting hole 8, an inner ring 9, a positioning convex point 10, a positioning hole 11, a welding part 12, a limiting protrusion 13 and a limiting groove 14.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be further described in detail below with reference to the accompanying drawings and detailed description. It should be understood that the detailed description is presented by way of example only and is not intended to limit the utility model.

Example 1

The utility model provides a battery top cap subassembly, including lamina tecti 1, electrode 2, sealing washer 3 and welded fastening piece 4, still include solid fixed ring 5 and backplate 6, set up a pair of through-hole 7 on lamina tecti 1, set up a pair of mounting hole 8 on the backplate 6, sealing washer 3 and mounting hole 8 all include outside bellied inner ring 9, and install in the top and the below of through-hole 7 through this inner ring 9 embedding respectively, backplate 6 is located lamina tecti 1's below, a plurality of location bump 10 are seted up to gu the bottom of solid fixed ring 5, a plurality of locating holes 11 are seted up around the through-hole 7, locating hole 11 and location bump 10 one-to-one, location bump 10 embedding locating hole 11 compresses tightly fixedly, place electrode 2 in the solid fixed ring 5, and both become integratively through the injection molding technology, welded fastening piece 4 possesses bellied welding portion 12, welding portion 12 embeds in through-hole 7, and be located sealing washer 3 and backplate 6 simultaneously, and weld with electrode 2 bottom welding through laser welding. Specifically, the sealing ring 3 and the backboard 6 are adopted to improve the insulation and isolation property, so that the risk of short circuit of the battery is reduced; the design that adopts solid fixed ring 5 and electrode 2 as an organic whole, the fixed mounting of being convenient for has optimized the installation technology, adopts laser welding to fix simultaneously, adopts laser welding to fix between welding fixture 4 and the electrode 2 simultaneously, improves welding strength to optimized production technology.

In this embodiment, the electrode 2 includes a positive electrode and a negative electrode, the bottom of the positive electrode is a negative electrode copper plate, the bottom of the negative electrode is a negative electrode aluminum plate, and the negative electrode copper plate and the negative electrode aluminum plate are welded with the welded portion of the welding fixture 4 by laser welding.

In this embodiment, the inner wall of the fixing ring 5 is provided with a plurality of limiting protrusions 13, the outer wall of the electrode 2 is provided with a plurality of limiting grooves 14, and the limiting grooves 14 and the limiting protrusions 13 are in one-to-one correspondence and are matched with each other. The electrode 2 can avoid the electrode 2 from rotating in the fixed ring 5 through the limiting protrusion 13 and the limiting groove 14.

In this embodiment, the welding parts 12 of the welding fixture 4 are in interference fit with the sealing ring 3 and the insulating ring 6, so that the tightness of the assembly is further improved.

Example 2

A battery including the battery top cover assembly; the electrode and the welding fixing piece and the battery top cover component and the battery shell can be in sealing connection by laser welding, the processing efficiency is higher than that of injection molding, the stability is high, and the cost is low.

The foregoing is merely illustrative of the present utility model and not restrictive, and other modifications and equivalents thereof may occur to those skilled in the art without departing from the spirit and scope of the present utility model.

Claims

1. The utility model provides a battery top cap subassembly, includes lamina tecti, electrode, sealing washer and welded fastening spare, its characterized in that: the sealing ring and the mounting hole comprise an outer convex inner ring, the inner ring is respectively embedded and mounted above and below the through hole, the back plate is located below the top cover plate, a plurality of positioning protruding points are arranged at the bottom of the fixing ring, a plurality of positioning holes are formed in the periphery of the through hole, the positioning holes and the positioning protruding points are in one-to-one correspondence, the positioning protruding points are embedded into the positioning holes to be pressed and fixed, the electrodes are placed in the fixing ring, the sealing ring and the mounting hole are integrated through an injection molding process, the welding fixing piece is provided with a convex welding part, the welding part is embedded into the through hole and is located in the mounting hole and the insulating ring, and the welding part is welded with the bottom of the electrode through laser welding.

2. The battery top cap assembly according to claim 1, wherein: the electrode comprises a positive electrode and a negative electrode, wherein the bottom of the positive electrode is a negative electrode copper plate, the bottom of the negative electrode is a negative electrode aluminum plate, and the negative electrode copper plate and the negative electrode aluminum plate are welded with a welding part of a welding fixing piece through laser welding.

3. The battery top cap assembly according to claim 1, wherein: the inner wall of the fixed ring is provided with a plurality of limiting protrusions, the outer wall of the electrode is provided with a plurality of limiting grooves, and the limiting grooves and the limiting protrusions are in one-to-one correspondence and are matched with each other.

4. The battery top cap assembly according to claim 1, wherein: and the welding parts of the welding fixing pieces are in interference fit with the sealing rings and the mounting holes.

5. A battery, characterized in that: comprising the battery top cap assembly according to any one of claims 1 to 4.