CN210692601U

CN210692601U - Battery top cap structure with layering soft connection piece

Info

Publication number: CN210692601U
Application number: CN201922195946.9U
Authority: CN
Inventors: 王有生; 吴清泉; 李华; 远浩
Original assignee: Changzhou Red Fairy Precision Technology Co Ltd
Current assignee: Changzhou Red Fairy Precision Technology Co Ltd
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2020-06-05
Anticipated expiration: 2029-12-09

Abstract

The utility model relates to the technical field of battery top covers, and discloses a battery top cover structure with layered soft connecting sheets, which comprises a top cover plate, soft connecting sheets and a sealing ring, wherein the top cover plate is provided with a through hole which penetrates through the top cover plate from top to bottom; the soft connecting sheet comprises a plurality of layers of metal sheets, the upper parts of the plurality of layers of metal sheets are mutually attached and fixed to form an integral section, and the integral section passes through the through hole and is exposed above the top cover plate to be electrically connected with an external circuit; the lower parts of the multiple layers of metal sheets are spaced from each other to form layered sections, and the layered sections are positioned below the top cover plate and are electrically connected with the battery core; the sealing ring is filled in the gap between the integral section and the through hole; the whole section of the soft connecting sheet passes through the through hole and is electrically connected with an external circuit, and the layered section is electrically connected with the battery core inside the battery below the top cover plate, so that the conduction of the battery core and the external circuit is realized; overall structure is simple, and spare part is less, and the process reduces during the assembly, can realize rapid Assembly, has improved the production efficiency of product.

Description

Battery top cap structure with layering soft connection piece

Technical Field

The patent of the utility model relates to a battery top cap's technical field particularly, relates to battery top cap structure with layering soft connection piece.

Background

A "lithium battery" is a type of battery using a nonaqueous electrolyte solution with lithium metal or a lithium alloy as a negative electrode material. Because the chemical properties of lithium metal are very active, the requirements on the environment for processing, storing and using the lithium metal are very high, and the lithium battery becomes the mainstream at present along with the development of scientific technology.

Traditional battery top cap includes top cap board, utmost point post, utmost point piece, connection piece and sealing washer etc. and utmost point post wears to establish in the through hole of top cap board, realizes being connected of electricity core and external circuit.

The existing battery top cover has more parts, complex structure, more working procedures during assembly and long assembly time, so that the production efficiency of products is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a battery top cap structure with layering soft connection piece aims at solving prior art, and battery top cap part is more, assemble the trouble problem.

The utility model is realized in such a way, the battery top cover structure with the layered soft connecting sheet comprises a top cover plate, a soft connecting sheet and a sealing ring, wherein the top cover plate is provided with a through hole which penetrates through the top cover plate from top to bottom; the flexible connecting sheet comprises a plurality of layers of metal sheets, the upper parts of the plurality of layers of metal sheets are mutually attached and fixed to form an integral section, and the integral section penetrates through the through hole and is exposed above the top cover plate to be electrically connected with an external circuit; the lower parts of the multiple layers of metal sheets are spaced from each other to form layered sections, and the layered sections are positioned below the top cover plate and electrically connected with the battery cell; the sealing ring is filled in a gap between the integral section and the through hole.

Further, the lower portions of the plurality of layers of metal sheets are uniform in length.

Furthermore, the battery cell is provided with a plurality of connecting holes, the plurality of layers of metal sheets correspond to the plurality of connecting holes one by one, and the lower part of each metal sheet is embedded into the corresponding connecting hole and is electrically connected with the battery cell.

Further, a plurality of the connecting holes are arranged at intervals side by side.

Further, the upper end face of the whole section of the soft connecting sheet is higher than the upper surface of the top cover plate.

Further, the upper portions of the plurality of layers of the metal sheets are welded and fixed to form the integral body section.

Furthermore, the upper portion of the sealing ring is located above the top cover plate and extends outwards to form an upper extension section, the upper extension section of the sealing ring abuts against the upper surface of the top cover plate, and the through hole is sealed and covered.

Further, the lower portion of the sealing ring is located below the top cover plate and extends outwards to form a lower extension section, the lower extension section of the sealing ring abuts against the lower surface of the top cover plate, and the through hole is covered.

Further, the through hole is square.

Compared with the prior art, the utility model provides a battery top cap structure with layering soft connection piece, the whole section of soft connection piece passes through the through hole, and is electrically connected with the external circuit, and the layering section is electrically connected with the electric core inside the battery below the top cap plate, thereby realizing the conduction of the electric core and the external circuit; the sealing ring is filled in a gap between the integral section and the through hole, so that the through hole is sealed, and sundries or water are prevented from entering the battery along the through hole, so that the battery core is damaged; overall structure is simple, and spare part is less, and the process reduces during the assembly, can realize rapid Assembly, has improved the production efficiency of product.

Drawings

Fig. 1 is a schematic perspective view of a battery top cap structure with layered soft connecting sheets according to the present invention;

fig. 2 is a schematic sectional view of a battery top cap structure with a layered soft connecting sheet provided by the present invention;

fig. 3 is an exploded view of a battery top cap structure with layered soft tabs provided by the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention 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. 1-3, the preferred embodiment of the present invention is shown.

The battery top cover structure with the layered soft connecting sheet 12 provided in this embodiment may be applied to a lithium ion battery, and of course, may also be applied to other batteries, and is not limited to the application in this embodiment.

The battery top cover structure with the layered soft connecting sheet 12 comprises a top cover plate 11, the soft connecting sheet 12 and a sealing ring 13, wherein the top cover plate 11 is provided with a through hole 14, and the through hole 14 penetrates through the top cover plate 11 from top to bottom; the flexible connecting sheet 12 comprises a plurality of layers of metal sheets, the upper parts of the plurality of layers of metal sheets are mutually attached and fixed to form an integral section 15, and the integral section 15 passes through the through hole 14 and is exposed above the top cover plate 11 to be electrically connected with an external circuit; the lower parts of the multiple layers of metal sheets are spaced from each other to form layered sections 16, and the layered sections 16 are positioned below the top cover plate 11 and are electrically connected with the battery cells; the seal ring 13 fills the gap between the integral segment 15 and the through hole 14.

In the battery top cover structure with the layered soft connecting sheet 12, the whole section 15 of the soft connecting sheet 12 passes through the through hole 14 and is electrically connected with an external circuit, and the layered section 16 is electrically connected with the battery core inside the battery below the top cover plate 11, so that the conduction between the battery core and the external circuit is realized; the sealing ring 13 is filled in a gap between the integral section 15 and the through hole 14, so that the through hole 14 is sealed, and sundries or water are prevented from entering the battery along the through hole 14, so that the battery core is damaged; overall structure is simple, and spare part is less, and the process reduces during the assembly, can realize rapid Assembly, has improved the production efficiency of product.

The lower part length of multilayer sheetmetal is unanimous for the height that multilayer sheetmetal and electric core contacted is unanimous, thereby keeps whole section 15 on upper portion to be vertical arrangement, is convenient for whole section 15 and external circuit to be connected.

The battery cell is provided with a plurality of connecting holes 17, the multilayer metal sheets correspond to the connecting holes 17 one by one, the lower parts of the metal sheets are embedded into the connecting holes 17 and are electrically connected with the battery cell, and the intervals of the lower parts of the multilayer metal sheets are gradually increased, so that the metal sheets can be inserted into the connecting holes 17.

The plurality of connecting holes 17 are arranged side by side at intervals and are adapted to the lower part of the multilayer metal sheet.

The upper end face of the integral section 15 of the flexible connecting sheet 12 is higher than the upper surface of the top cover plate 11, and the integral section 15 protrudes out of the top cover plate 11 and is convenient to be in contact connection with an external circuit.

The upper part of the multilayer metal sheet is welded and fixed to form an integral body section 15, and the welding enables the multilayer metal sheet to form an integral body which is very stable and is communicated with each other.

The upper part of the sealing ring 13 is located above the top cover plate 11 and extends outwards to form an upper extension section 18, the upper extension section 18 of the sealing ring 13 abuts against the upper surface of the top cover plate 11 and covers the through hole 14, and the upper surface of the top cover plate 11 plays a supporting role for the sealing ring 13 and limits the downward sliding of the sealing ring 13 while sealing the through hole 14.

The lower portion of the sealing ring 13 is located below the top cover plate 11 and extends outwards to form a lower extending section 19, the lower extending section 19 of the sealing ring 13 abuts against the lower surface of the top cover plate 11, the through hole 14 is sealed, the sealing ring 13 is limited to slide upwards while the through hole 14 is sealed, the sealing ring 13 is limited to slide upwards by matching with the upper extending section 18, and the sealing ring 13 is prevented from shaking in the vertical direction.

The through hole 14 is square, and the sealing ring 13 is prevented from rotating in the through hole 14, so that the position of the sealing ring 13 is more stable.

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 cover structure with the layered soft connecting sheet is characterized by comprising a top cover plate, the soft connecting sheet and a sealing ring, wherein the top cover plate is provided with a through hole which penetrates through the top cover plate from top to bottom; the flexible connecting sheet comprises a plurality of layers of metal sheets, the upper parts of the plurality of layers of metal sheets are mutually attached and fixed to form an integral section, and the integral section penetrates through the through hole and is exposed above the top cover plate to be electrically connected with an external circuit; the lower parts of the multiple layers of metal sheets are spaced from each other to form layered sections, and the layered sections are positioned below the top cover plate and electrically connected with the battery cell; the sealing ring is filled in a gap between the integral section and the through hole.

2. The battery top cap structure with a layered flexible connecting sheet of claim 1, wherein the lower portion of the plurality of layers of metal sheets are of uniform length.

3. The battery top cap structure with a layered flexible connecting sheet according to claim 2, wherein the battery cell has a plurality of connecting holes, the plurality of layers of metal sheets correspond to the plurality of connecting holes one by one, and the lower portion of the metal sheet is embedded into the connecting holes and electrically connected to the battery cell.

4. The battery top cap structure with a layered flexible connecting sheet according to claim 3, wherein a plurality of the connecting holes are arranged in a side-by-side spaced-apart manner.

5. The battery top cap structure of claim 4, wherein the upper end surface of the integral section of the flexible tab is higher than the upper surface of the top cap plate.

6. The battery top cap structure of claim 5, wherein the upper portion of the plurality of layers of metal sheets are welded to form the integral section.

7. The battery top cap structure with the layered flexible connecting sheet according to any one of claims 1 to 6, wherein the upper part of the sealing ring is positioned above the top cap plate and extends outwards to form an upper extension section, and the upper extension section of the sealing ring abuts against the upper surface of the top cap plate and covers the through hole.

8. The battery top cap structure with the layered soft connecting sheet according to claim 7, wherein the lower part of the sealing ring is located below the top cap plate and extends outwards to form a lower extension section, and the lower extension section of the sealing ring abuts against the lower surface of the top cap plate and covers the through hole.

9. The battery top cap structure with a layered flexible connecting sheet according to any one of claims 1 to 6, wherein the through-hole has a square shape.