CN212342704U

CN212342704U - Edge three-hole spare sheet

Info

Publication number: CN212342704U
Application number: CN202021155339.6U
Authority: CN
Inventors: 张涵
Original assignee: Xinxiang Tianguan Electronics Co ltd
Current assignee: Xinxiang Tianguan Electronics Co ltd
Priority date: 2020-06-21
Filing date: 2020-06-21
Publication date: 2021-01-12
Anticipated expiration: 2030-06-21

Abstract

The utility model discloses a piece is equipped with to border diplopore, its characterized in that: comprises a spare sheet and a connecting unit; preparing tablets: three corresponding exhaust holes are arranged on the upper end surface; a connection unit: the fixing ring is fixed on the edge of the upper end face of the spare sheet, the annular clamping groove is formed in the lower end face of the fixing ring, the fastening ring is fixed on the inner side wall, far away from the spare sheet, of the annular clamping groove, glue is filled in the upper end of the inner portion of the annular clamping groove, and the spare sheet can be effectively prevented from being separated from a positive electrode lug of a lithium battery by arranging a connecting unit; the lithium battery tab is characterized by further comprising a welding point recess, the welding point recess is formed in the middle of the lower end face of the spare sheet, the exhaust holes are fan-shaped, the included angle between every two adjacent exhaust holes is one hundred twenty degrees, the hole diameters of the exhaust holes are increased under the condition that the strength is kept, and the lithium battery tab can be effectively prevented from being separated from the positive electrode tab of the lithium battery.

Description

Edge three-hole spare sheet

Technical Field

The utility model relates to a lithium cell block production technical field specifically is a piece is equipped with to border diplopore formula.

Background

The lithium battery cap is a component of a lithium battery, plays a role of a positive conductive terminal on the lithium battery, plays a role of a safety valve and also provides a battery sealing function, and comprises a top cover, a rubber ring, an explosion-proof membrane, an aluminum sheet/nickel sheet and a spare sheet, wherein the top cover is arranged at the top end of the rubber ring, the spare sheet is arranged at the bottom end of the rubber ring, the aluminum sheet/nickel sheet is arranged in the middle of the rubber ring and is positioned between the top cover and the spare sheet, the explosion-proof membrane is arranged between the aluminum sheet/nickel sheet and the spare sheet, the edge part of the spare sheet is provided with an exhaust hole, the middle part of the lower end surface of the spare sheet is provided with a welding point recess, during installation, the spare sheet and a positive electrode lug of the lithium battery are welded together through laser spot welding in the welding point recess of the spare sheet, the existing spare sheet is often provided, the lithium battery is damaged, the existing spare sheet installation mode is only to weld the welding point recess of the spare sheet and the positive pole lug of the lithium battery together, and the edge of the spare sheet is not fixed, so that the spare sheet can be separated from the positive pole lug of the lithium battery in long-time use.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome current defect, provide a piece is equipped with to border diplopore, increase the aperture in exhaust hole under the condition that keeps intensity to can effectively prevent with the anodal utmost point ear separation of lithium cell, can effectively solve the problem in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: an edge three-hole spare sheet is characterized in that: comprises a spare sheet and a connecting unit;

preparing tablets: three corresponding exhaust holes are arranged on the upper end surface;

a connection unit: the fixing ring is fixed on the edge of the upper end face of the spare sheet, the annular clamping groove is formed in the lower end face of the fixing ring, the fastening ring is fixed on the inner side wall, far away from the spare sheet, of the annular clamping groove, glue is filled in the upper end of the inner portion of the annular clamping groove, and the spare sheet can be effectively prevented from being separated from a positive electrode lug of a lithium battery by arranging a connecting unit;

wherein: the welding point concave part is arranged in the middle of the lower end face of the spare sheet.

Furthermore, the shape of each exhaust hole is fan-shaped, and the included angle between every two adjacent exhaust holes is one hundred twenty degrees.

Further, the shape of the welding point concave part is a frustum shape.

Furthermore, the inner side wall of the annular clamping groove is flush with the circumferential surface of the spare sheet.

Further, the fastening ring is made of rubber.

Compared with the prior art, the beneficial effects of the utility model are that: this edge three pass prepares piece, has following benefit:

1. placing the spare sheet on the end face of the lithium battery, enabling the positive pole lug of the lithium battery to be located in the concave part of the welding point, then clamping the shell of the lithium battery into the annular clamping groove, firmly fixing the shell of the lithium battery in the annular clamping groove by the fastening ring and the glue arranged in the annular clamping groove after the shell of the lithium battery enters the annular clamping groove, and then welding the positive pole lug of the lithium battery into the concave part of the welding point through laser spot welding, thereby completing installation, and enabling the utility model to effectively prevent the spare sheet from being separated from the positive pole lug of the lithium battery by arranging the above devices;

2. compared with the traditional intensive exhaust holes, the three exhaust holes have larger hole diameters and better effect during exhaust, so that the lithium battery can be effectively prevented from being damaged.

Drawings

FIG. 1 is a schematic front side view of the present invention;

fig. 2 is a right side sectional view of the present invention.

In the figure: 1 spare sheet, 2 exhaust holes, 3 connecting units, 31 fixing rings, 32 annular clamping grooves, 33 fastening rings, 34 glue and 4 welding point recesses.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: an edge three-hole spare sheet comprises a spare sheet 1 and a connecting unit 3;

preparation of tablets 1: the upper end surface is provided with three corresponding exhaust holes 2;

the connection unit 3: the lithium battery positive electrode tab fixing device comprises a fixing ring 31, an annular clamping groove 32, a fastening ring 33 and glue 34, wherein the fixing ring 31 is fixed on the edge of the upper end face of a spare sheet 1, the annular clamping groove 32 is formed in the lower end face of the fixing ring 31, the fastening ring 33 is fixed on the inner side wall, far away from the spare sheet 1, in the annular clamping groove 32, the glue 34 is filled in the upper end of the inner part of the annular clamping groove 32, and the spare sheet 1 can be effectively prevented from being separated from the positive electrode tab of a lithium;

wherein: the welding device further comprises a welding point concave part 4, and the middle part of the lower end face of the spare sheet 1 is provided with the welding point concave part 4.

Wherein: the shape of each exhaust hole 2 is fan-shaped, and the included angle between every two adjacent exhaust holes 2 is one hundred twenty degrees.

Wherein: the shape of the welding point recess 4 is a frustum shape.

Wherein: the inner side wall of the ring-shaped clamping groove 32 is flush with the circumferential surface of the spare sheet 1.

Wherein: the fastening ring 33 is made of rubber.

When in use: will be equipped with piece 1 and place on the terminal surface of lithium cell, make the anodal utmost point ear of lithium cell be located welding point concave position 4, then the shell joint with the lithium cell advances ring groove 32's inside, install the inside tighrening ring 33 of ring groove 32 and glue 34 firmly fix the inside at ring groove 32 with the shell of lithium cell after the shell of lithium cell enters into ring groove 32's inside, then weld into the inside of welding point concave position 4 with the anodal utmost point ear of lithium cell through laser spot welding, thereby accomplish the installation, the gas of inside the in-process battery of lithium cell normal practicality is discharged through three large aperture exhaust hole 2.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An edge three-hole spare sheet is characterized in that: comprises a spare sheet (1) and a connecting unit (3);

preparation of tablet (1): three corresponding exhaust holes (2) are arranged on the upper end surface;

connection unit (3): the fixing device comprises a fixing ring (31), an annular clamping groove (32), a fastening ring (33) and glue (34), wherein the fixing ring (31) is fixed on the edge of the upper end face of a spare sheet (1), the lower end face of the fixing ring (31) is provided with the annular clamping groove (32), the fastening ring (33) is fixed on the inner side wall, far away from the spare sheet (1), in the annular clamping groove (32), and the upper end in the annular clamping groove (32) is filled with the glue (34);

wherein: the welding device is characterized by further comprising a welding point concave part (4), and the middle part of the lower end face of the spare sheet (1) is provided with the welding point concave part (4).

2. The edge triple-hole spare sheet according to claim 1, wherein: the exhaust holes (2) are fan-shaped, and the included angle between every two adjacent exhaust holes (2) is one hundred twenty degrees.

3. The edge triple-hole spare sheet according to claim 1, wherein: the welding point concave part (4) is in a frustum shape.

4. The edge triple-hole spare sheet according to claim 1, wherein: the inner side wall of the annular clamping groove (32) is flush with the circumferential surface of the spare sheet (1).

5. The edge triple-hole spare sheet according to claim 1, wherein: the fastening ring (33) is made of rubber.