CN218472101U

CN218472101U - Top cover structure of secondary battery cell with threaded sealing electrode

Info

Publication number: CN218472101U
Application number: CN202221606224.3U
Authority: CN
Inventors: 张方超; 吴清泉; 何金磊
Original assignee: Shanghai Lanjun New Energy Technology Co Ltd
Current assignee: Shanghai Lanjun New Energy Technology Co Ltd
Priority date: 2022-06-25
Filing date: 2022-06-25
Publication date: 2023-02-10
Anticipated expiration: 2032-06-25

Abstract

The utility model relates to a thread sealing secondary electricity core top cap structure, this structure is including the top cap piece of seting up utmost point post hole and explosion-proof hole, setting explosion-proof valve protection paster on explosion-proof hole and setting up the explosion-proof valve between explosion-proof hole and lower plastic, this structure still including setting up at the downthehole utmost point post of utmost point post and hug closely the spacer, go up plastic, sealing washer and the lower plastic of setting in top cap piece and utmost point post formation space in proper order, utmost point post include utmost point post lower part and through the utmost point post upper part of screw thread setting in utmost point post lower part. Compared with the prior art, the utility model has the advantages of make things convenient for secondary operation, reduce cost and guarantee sealing washer compression volume uniformity.

Description

Top cover structure of secondary battery cell of threaded sealing pole

Technical Field

The utility model relates to a secondary electric core top cap structure especially relates to a thread sealing secondary electric core top cap structure.

Background

The top cap structure of electric core is through the upper surface of extrusion utmost point post at present, advances to extrude the material on utmost point post upper portion to the spacer upside, plays the effect of stereotyping after the sealing washer compression. However, when the extrusion force is too large, the top cover is deformed, and the compression amount of the sealing ring is difficult to ensure the consistency and the changeability of plastic on the positioning piece and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a thread sealing secondary electric core top cap structure for overcoming the defects existing in the prior art.

The purpose of the utility model can be realized through the following technical scheme:

the utility model provides a screw seal secondary electricity core top cap structure, this structure is including the top cap piece of seting up utmost point post hole and explosion-proof hole, setting explosion-proof valve protection paster on explosion-proof hole and setting up the explosion-proof valve between explosion-proof hole and lower plastic, this structure still including setting up at the downthehole utmost point post of utmost point post and hug closely the spacer, go up plastic, sealing washer and the lower plastic that set up in top cap piece and utmost point post formation space in proper order, utmost point post include utmost point post lower part and through the utmost point post upper part of screw thread setting in utmost point post lower part.

The middle part of the upper side of the lower pole part is provided with a first groove, and the side surface of the first groove is provided with a thread.

The lower part of the pole is circumferentially provided with an outward bulge.

Utmost point post upper portion spare include integrated into one piece's connecting portion and extrusion portion, the connecting portion surface be equipped with utmost point post lower part's first recess assorted screw thread to pass through threaded connection with first recess.

The cross-sectional area of the extrusion part is larger than that of the connecting part and that of the upper side of the pole upper part.

The lower plastic consists of an outer side supporting part and an inner side compressed part, and the inner side compressed part and the sealing ring of the lower plastic are arranged in a gap formed by the top cover plate and the pole lower part.

The sealing ring is matched and attached tightly with the compressed part on the inner side of the lower plastic, the upper side of the attaching surface of the sealing ring matched and attached tightly with the compressed part on the inner side of the lower plastic is an annular inclined surface inclined from outside to inside, and the lower side of the attaching surface is an annular vertical surface.

The middle part of the upper plastic is provided with a second groove matched with the positioning sheet, the middle part of the second groove is provided with a hole, and the lower side of the edge part of the upper plastic corresponding to the hole is provided with an annular bulge.

The upper plastic is matched and attached to the upper side of the top cover plate, and the annular bulge on the lower side of the upper plastic is embedded between the pole column hole and the pole column.

The locating plate is arranged in the second groove of the upper plastic, and the locating plate is tightly attached to the pole in a matched mode.

Compared with the prior art, the utility model discloses have with following beneficial effect:

1. the pole of the utility model adopts the thread structure, is convenient to disassemble and assemble, and realizes the technical effect of convenient secondary processing and cost reduction;

2. the utility model discloses a locking or unscrew the screw thread in order to adjust the sealing washer decrement, realized making the technological effect that the sealing washer decrement uniformity is good.

Drawings

Fig. 1 is an exploded view of a conventional top cover.

Fig. 2 is a schematic view of the structural assembly of a conventional top cover.

Fig. 3 is a partial cross-sectional view of an assembled prior art overcap.

Fig. 4 is a schematic diagram of the structure explosion of the present invention.

Fig. 5 is a schematic view of the structural assembly of the present invention.

Fig. 6 is a cross-sectional view of the present invention.

Fig. 7 is a partial sectional view of the present invention.

Reference numerals: 1. top cap piece, 2, the utmost point post of current top cap, 3, the spacer, 4, go up the plastic, 5, down the plastic, 6, the sealing washer, 7, utmost point post upper part, 8, utmost point post lower part, 9, explosion-proof valve protection paster, 10, explosion-proof valve.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

The utility model provides a thread sealing secondary electricity core top cap structure more changes two parts from top to bottom with utmost point post by a part and forms, and two parts reach the effect of resilience after the restriction sealing washer 6 compresses through the interlock of screw thread.

The structure comprises a top cover plate 1 provided with a polar column hole, a polar column arranged in the polar column hole, a positioning plate 3, and upper plastic 4, a sealing ring 6 and lower plastic 5 which are sequentially tightly attached to and arranged in a gap formed by the top cover plate 1, the polar column and the positioning plate 3.

Utmost point post includes utmost point post lower part 8 and sets up utmost point post upper part 7 in utmost point post lower part 8 through the screw thread, utmost point post lower part 8's lower part circumference is equipped with outside arch, the recess is seted up at the middle part of utmost point post lower part 8 upside, the recess side is equipped with the screw thread, utmost point post upper part 7 includes integrated into one piece's connecting portion and extrusion portion, connecting portion are equipped with the screw thread that matches with utmost point post lower part 8's recess, pass through threaded connection with the recess, the cross-sectional area of extrusion portion is greater than the cross-sectional area of connecting portion and the cross-sectional area of utmost point post upper part 7 upsides.

Lower plastic 5 comprises outside supporting part and inboard by the compression part, and the inboard of lower plastic 5 is set up in the space that 8 parts formed under top cap piece 1 and the utmost point post by compression part and sealing washer 6, and sealing washer 6 is pasted tightly by the compression part cooperation with the inboard of lower plastic 5, and the inboard of sealing washer 6 and lower plastic 5 is pasted tightly by the compression part cooperation and is pasted tight face upside and be the cyclic annular inclined plane of outside-in slope, and the downside is cyclic annular vertical face.

Go up plastic 4 and set up in top cap piece 1 upside, the annular arch of inboard is inlayed and is established in the space that top cap piece 1 and utmost point post lower part 8 formed, and spacer 3 sets up in the second recess of last plastic 4, and spacer 34 pastes tightly with utmost point post and the 1 upside cooperation of top cap piece.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the principles of this invention without the use of inventive faculty. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. The utility model provides a screw seal secondary electricity core top cap structure, this structure is including top cap piece (1) of seting up utmost point post hole and explosion-proof hole, explosion-proof valve protection paster (9) and explosion-proof valve (10) of setting between explosion-proof hole and lower plastic (5) of setting on explosion-proof hole, a serial communication port, this structure is still including setting up the downthehole utmost point post of utmost point post and hug closely in proper order setting spacer (3) in top cap piece (1) and utmost point post formation space, go up plastic (4), sealing washer (6) and lower plastic (5), utmost point post include under the utmost point post part (8) and set up utmost point post upper part (7) in part (8) under the utmost point post through the screw thread.

2. The top cap structure of the thread sealing secondary battery cell of claim 1, wherein a first groove is formed in the middle of the upper side of the lower pole member (8), and a thread is formed on the side surface of the first groove.

3. The screw thread sealing secondary battery cell top cap structure of claim 2, characterized in that the lower part of the lower pole part (8) is provided with an outward protrusion in the circumferential direction.

4. The screw-thread sealing secondary battery cell top cap structure of claim 1, characterized in that the pole upper part (7) comprises an integrally formed connecting part and an extrusion part, and the outer surface of the connecting part is provided with a screw thread matching with the first groove of the pole lower part (8) and is in threaded connection with the first groove.

5. A screw thread sealing secondary battery core top cover structure according to claim 4, characterized in that, the cross-sectional area of the extrusion part is larger than the cross-sectional area of the connection part and the cross-sectional area of the upper side of the pole upper part (7).

6. The screw thread sealing secondary battery core top cover structure of claim 1, characterized in that, the lower plastic (5) is composed of an outer side supporting part and an inner side compressed part, the inner side compressed part of the lower plastic (5) and the sealing ring (6) are arranged in the gap formed by the top cover plate (1) and the pole lower part (8).

7. The cap structure of claim 6, wherein the sealing ring (6) is fitted and attached to the inner side of the lower plastic (5) by the compressed portion, the upper side of the fitting surface of the sealing ring (6) and the lower plastic (5) fitted and attached to the inner side of the compressed portion is an annular inclined surface inclined from outside to inside, and the lower side of the fitting surface is an annular vertical surface.

8. The top cover structure of the thread sealing secondary battery cell of claim 1, wherein a second groove matched with the positioning plate (3) is formed in the middle of the upper plastic (4), a hole is formed in the middle of the second groove, and an annular protrusion is arranged on the lower side of the edge portion, corresponding to the hole, of the upper plastic (4).

9. The top cap structure of the thread sealing secondary battery cell of claim 8, wherein the upper plastic (4) is tightly fitted with the upper side of the top cap piece (1), and the annular protrusion on the lower side of the upper plastic (4) is embedded between the pole hole and the pole.

10. The cap structure of the thread sealing secondary battery core of claim 8, wherein the positioning plate (3) is arranged in the second groove of the upper plastic (4), and the positioning plate (3) is tightly attached to the pole in a fit manner.