CN218274817U

CN218274817U - Battery top cover

Info

Publication number: CN218274817U
Application number: CN202221580635.XU
Authority: CN
Inventors: 王有生; 李华; 覃太平; 刘琼
Original assignee: Changzhou Red Fairy Precision Technology Co Ltd
Current assignee: Jiangsu Ruidefeng Precision Technology Co ltd
Priority date: 2022-06-22
Filing date: 2022-06-22
Publication date: 2023-01-10
Anticipated expiration: 2032-06-22

Abstract

The utility model relates to a technical field of battery, the utility model discloses a battery top cap, including the top-hat piece, be equipped with down the plastic part on the top-hat piece, down the plastic part be connected with utmost point ear electric connection's connection piece, the connection piece is protruding upward to be equipped with the convex closure, the convex closure passes down plastic part and top-hat piece and utmost point post electric connection, the connection piece coats and is stamped the top insulating layer, the convex closure is located the top insulating layer outside, the top insulating layer is arranged between connection piece and lower plastic part, the connection piece utilizes the top insulating layer to cover the clearance between connection piece and the lower plastic part, make connection piece and have certain insulating nature down between the plastic part, the condition of plastic part under can not appearing puncturing because of the electric current unstability when the electric current process again, avoid appearing the short circuit phenomenon, the simultaneous performance is better, and the connection piece passes through the firm laminating of top insulating layer under the plastic part, make it can not rock the process that influences the electric current at will not wantonly, the connection piece passes through convex closure and utmost point post electric connection, make the connection piece not influence its essential function.

Description

Battery top cover

Technical Field

The patent of the utility model relates to a technical field of battery particularly, relates to battery top cap.

Background

The connecting sheet of the existing structure is welded with the top cover plate and a battery tab, and then short circuit can occur in use, so that the battery is abnormal.

That is to say: utmost point ear is inside the battery, there is electric core inside the battery, utmost point ear is connected at the output of electric core, the one end and the utmost point ear of connection piece are connected, utmost point post is connected on the top cap piece, its outer end extends to the top of top cap piece, its lower extreme is along the inside to the battery, be located the below of top cap piece, the other end of connection piece is connected with the inner of utmost point post, and like this, the electric current is exported by the output of electric core, through utmost point ear, the connection piece, export again to utmost point post, however, because the clearance between connection piece and the top cap piece is less, this clearance is punctureed easily to the electric current, lead to partial electric current conduction to the top cap piece, cause the short circuit.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a battery top cap aims at solving prior art, and the clearance between connection piece and the top cap piece is less, and the current conduction causes the problem of short circuit.

The utility model discloses a realize like this, battery top cap, including the top-hat piece, be equipped with down the plastic part on the top-hat piece, down the plastic part be connected with utmost point ear electric connection's connection piece, the connection piece is protruding upward to be equipped with the convex closure, the convex closure passes down plastic part and top-hat piece and utmost point post electric connection, the connection piece coats and is stamped the top insulating layer, the convex closure is located the top insulating layer outside, the top insulating layer is arranged between connection piece and lower plastic part, will separate between connection piece and the lower plastic part.

Furthermore, the connecting sheet is provided with an extending section extending towards the direction, the extending section bends downwards to be electrically connected with the lug, and a bottom insulating layer covers the lower portion of the connecting sheet.

Furthermore, a convex hole is formed in the top end of the top insulating layer, and the convex hull is exposed on the convex hole and electrically connected with the pole.

Further, the height from the top end face of the convex hole to the top end face of the convex hull is greater than or equal to the distance of the side plane of the convex hull and smaller than or equal to the distance of the outermost plane of the convex hull.

Further, the thickness range of the bottom insulating layer and the top insulating layer is 0.01-1.5mm, the insulating range of the bottom insulating layer and the top insulating layer is 500VDC-2000VDC and more than 200M omega, and the withstand voltage is 500VDC-3000VDC.

Further, the electrolyte-resistant temperature range of the bottom insulating layer and the top insulating layer is less than or equal to 85 ℃.

Further, the connecting sheet is made of copper or aluminum material.

Furthermore, the thickness range value of the connecting sheet is 0.5-2.5mm.

Furthermore, a connecting hole which penetrates through the top end of the lower plastic part up and down is formed in the top end of the lower plastic part, the convex hull penetrates through the connecting hole and is electrically connected with the pole, a peripheral insulating layer is arranged on the inner side wall of the connecting hole in a surrounding mode, the bottom of the peripheral insulating layer is pressed against the convex hole of the top insulating layer, the convex hull and the lower plastic part are arranged in an insulating mode, and the top of the peripheral insulating layer is flush with the top end face of the lower plastic part;

the utility model discloses a plastic part, including periphery insulating layer, barrier strip, protruding package, position and lower plastic part, the inside wall epirelief of periphery insulating layer is equipped with the barrier strip, the barrier strip encircles the interval arrangement on the inside wall of periphery insulating layer, the barrier strip is the trapezium structure, the lateral wall of barrier strip supports to press on protruding package, the top of barrier strip supports to press on utmost point post, will utmost point post and protruding package are connected the position and down insulation arrangement between the plastic part.

Furthermore, the inner side wall of the connecting hole is provided with grooves, the grooves are arranged on the inner side wall of the connecting hole at intervals in a surrounding mode, and the outer side wall of the peripheral insulating layer is provided with embedding blocks which are embedded in the grooves in the facing direction.

Compared with the prior art, the utility model provides a battery top cap, the connection piece utilizes the top insulating layer to cover the connection piece and the clearance between the plastic part down, make certain insulating nature have between connection piece and the lower plastic part, the condition of plastic part under can no longer appearing puncturing because of the electric current is unstable when the electric current process, avoid appearing the short circuit phenomenon, the simultaneous performance is better, and the connection piece passes through the firm laminating of top insulating layer under the plastic part, make it can not rock the process that influences the electric current at will, the connection piece passes through convex closure and utmost point post electric connection, make the connection piece not influence its essential function.

Drawings

Fig. 1 is a front perspective schematic view of a battery top cap provided by the present invention;

fig. 2 is a schematic front sectional view of a battery top cap provided by the present invention;

FIG. 3 is an enlarged view of A-A of FIG. 2 according to the present invention;

FIG. 4 is a front perspective view of the connecting sheet provided by the present invention;

fig. 5 is a schematic view of a front cross-sectional structure of the connecting sheet provided by the present invention;

FIG. 6 is a front sectional view of the lower plastic part and the connecting piece according to the present invention;

fig. 7 is a schematic top view of the lower plastic part according to the present invention.

In the figure: the top cover plate 100, the pole 200, the lower plastic piece 300, the connecting sheet 400, the top insulating layer 500, the bottom insulating layer 600, the convex hull 700, the peripheral insulating layer 301, the barrier strip 302 and the embedding block 303.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

The following describes the implementation of the present invention in detail with reference to specific embodiments.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and those skilled in the art can understand the specific meanings of the terms according to specific situations.

Referring to fig. 1-6, the preferred embodiment of the present invention is shown.

Battery top cap, including top cover plate 100, plastic part 300 is equipped with down on the top cover plate 100, plastic part 300 is connected with connection piece 400 with utmost point ear electric connection down, connection piece 400 is equipped with convex closure 700 towards the epirelief, plastic part 300 and top cover plate 100 and utmost point post 200 electric connection are passed down to convex closure 700, connection piece 400 coats and is stamped top insulating layer 500, convex closure 700 is located the top insulating layer 500 outside, top insulating layer 500 arranges between connection piece 400 and lower plastic part 300, will separate between connection piece 400 and the lower plastic part 300.

Above-mentioned battery top cap that provides, connection piece 400 utilizes top insulating layer 500 to cover the clearance between connection piece 400 and lower plastic part 300, make connection piece 400 and have certain insulating nature down between the plastic part 300, the condition of puncturing plastic part 300 under can no longer appear because of the electric current is unstable when the electric current passes through, avoid appearing the short circuit phenomenon, the performance is better simultaneously, and connection piece 400 is through the firm laminating of top insulating layer 500 under plastic part 300, make it can not rock the process that influences the electric current at will, connection piece 400 passes through convex closure 700 and utmost point post 200 electric connection, make connection piece 400 not influence its essential function.

In this embodiment, the connecting sheet 400 may be arranged in an insulating manner without protruding the convex hull 700, except for the connection between the terminal 200 and the tab, and may also have an insulating effect.

The connecting sheet 400 is provided with an extending section extending towards the direction, the extending section bends downwards to be electrically connected with the tab, and a bottom insulating layer 600 covers the connecting sheet 400. Thus, the bottom end of the connecting piece 400 can be protected by the bottom insulating layer 600, so that the plastic part 300 cannot be broken down due to the passing of current, and the protection of the tab is also realized.

A convex hole is formed at the top end of the top insulating layer 500, and the convex hull 700 is exposed on the convex hole and electrically connected with the pole 200; the height from the top end surface of the convex hole to the top end surface of the convex hull 700 is greater than or equal to the distance of the side plane of the convex hull 700 and less than or equal to the distance of the outermost plane of the convex hull 700. This does not affect the electrical connection between the convex hull 700 and the pole 200, and the convex hole also provides insulation protection for the outside of the convex hull 700.

The thickness range of the bottom insulating layer 600 and the top insulating layer 500 is 0.01-1.5mm, the insulating range of the bottom insulating layer 600 and the top insulating layer 500 is 500VDC-2000VDC, which is more than 200M omega, and the withstand voltage is 500VDC-3000VDC; the electrolyte resistant temperature range of the bottom insulating layer 600 and the top insulating layer 500 is less than or equal to 85 ℃.

In this embodiment, the connecting pad 400 is protected by improving the properties of the bottom insulating layer 600 and the top insulating layer 500.

The connection sheet 400 is made of a copper or aluminum material; the thickness range value of the connecting piece 400 is 0.5-2.5mm.

The top end of the lower plastic part 300 is provided with a connecting hole which penetrates through the lower plastic part from top to bottom, the convex hull 700 penetrates through the connecting hole to be electrically connected with the pole 200, the inner side wall of the connecting hole is provided with a peripheral insulating layer 301, the peripheral insulating layer 301 is arranged on the inner side wall of the connecting hole in a surrounding manner, the bottom of the peripheral insulating layer 301 is pressed against the convex hole of the top insulating layer 500, the convex hull 700 and the lower plastic part 300 are arranged in an insulating manner, and the top of the peripheral insulating layer 301 is flush with the top end face of the lower plastic part 300;

the utility model discloses a plastic part, including periphery insulating layer 301, the inside wall epirelief of periphery insulating layer 301 is equipped with and blocks parting bead 302, block parting bead 302 encircles the interval arrangement on the inside wall of periphery insulating layer 301, block parting bead 302 is the trapezium structure, the lateral wall of blocking parting bead 302 supports and presses on convex closure 700, the top of blocking parting bead 302 supports and presses on utmost point post 200, will position that utmost point post 200 and convex closure 700 are connected and plastic part 300 between the insulation arrangement down.

In this embodiment, the lower plastic part 300 has a connection position between the convex hull 700 and the pole 200 through the connection hole, and the connection hole separates the connection position between the convex hull 700 and the pole 200 by using the peripheral insulating layer 301, so as to prevent a part of current from being conducted to the top cover plate 100 to cause short circuit; the peripheral insulating layer 301 protects the convex hull 700 through the barrier strips 302, and provides a heat-dissipating gap for the convex hull 700, so that the performance of the connecting sheet 400 during operation is optimal, and the barrier strips 302 can also play a role in stabilizing the bottom of the pole 200.

Grooves are formed in the inner side wall of the connecting hole, the grooves are arranged on the inner side wall of the connecting hole at intervals in a surrounding mode, and the outer side wall of the peripheral insulating layer 301 is provided with embedding blocks 303 inserted into the grooves in an facing mode.

In this embodiment, the peripheral insulating layer 301 is inserted into the groove on the inner sidewall of the connecting hole by using the fitting block 303, so that the peripheral insulating layer 301 is more firmly connected with the inner sidewall of the connecting hole, and the peripheral insulating layer 301 is prevented from being separated.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The battery top cap, its characterized in that, including the top cap piece, be equipped with down the plastic part on the top cap piece, the plastic part is connected with the connection piece with utmost point ear electric connection down, the connection piece is protruding upwards to be equipped with the convex closure, the convex closure passes down plastic part and top cap piece and utmost point post electric connection, the connection piece coats and is stamped the top insulating layer, the convex closure is located the top insulating layer outside, the top insulating layer is arranged between connection piece and lower plastic part, will separate between connection piece and the lower plastic part.

2. The battery top cap of claim 1, wherein the connecting tab has an extension extending therefrom, the extension being bent downward to electrically connect the tab, and the connecting tab is covered with a bottom insulating layer.

3. The battery top cap of claim 1, wherein a protrusion is formed on a top end of the top insulating layer, and the protrusion is exposed on the protrusion and electrically connected to the post.

4. The battery top cover of claim 3, wherein the height from the top end face of the aperture to the top end face of the convex hull is equal to or greater than the distance from the side plane of the convex hull and equal to or less than the distance from the outermost plane of the convex hull.

5. The battery top cap of claim 2, wherein the thickness of the bottom and top insulating layers ranges from 0.01 to 1.5mm, the insulating properties of the bottom and top insulating layers range from 500VDC to 2000VDC, greater than 200M Ω, and the withstand voltage ranges from 500VDC to 3000VDC.

6. The battery top cap of claim 5, wherein the electrolyte resistant temperature range of the bottom insulating layer and the top insulating layer is 85 ℃ or less.

7. The battery top cap of any one of claims 1-2, wherein the tab is fabricated from a copper or aluminum material.

8. A battery top cap according to any one of claims 1 to 2, wherein the tab has a thickness in the range of 0.5 to 2.5mm.

9. The battery top cover according to claim 1, wherein a connecting hole is formed in the top end of the lower plastic part and penetrates through the lower plastic part, the convex hull penetrates through the connecting hole to be electrically connected with the pole, an outer peripheral insulating layer is arranged on the inner side wall of the connecting hole in a surrounding mode, the bottom of the outer peripheral insulating layer abuts against the convex hole of the top insulating layer to enable the convex hull and the lower plastic part to be arranged in an insulating mode, and the top of the outer peripheral insulating layer is flush with the top end face of the lower plastic part;

10. The battery top cover according to claim 9, wherein the inner side wall of the connection hole is provided with grooves arranged on the inner side wall of the connection hole at intervals therearound, and the outer side wall of the outer peripheral insulating layer has fitting pieces fitted into the grooves toward the outside.