CN213583961U

CN213583961U - Button cell with groove

Info

Publication number: CN213583961U
Application number: CN202021879596.4U
Authority: CN
Inventors: 王建; 夏青; 许杰康; 官守敏; 阮保红
Original assignee: Yichang Lijia Technology Co ltd
Current assignee: Yichang Lijia Technology Co ltd
Priority date: 2020-09-01
Filing date: 2020-09-01
Publication date: 2021-06-29
Anticipated expiration: 2030-09-01

Abstract

The utility model discloses a button cell with groove, including negative pole lid, positive pole casing, sealing washer, positive pole, diaphragm, negative pole and electrolyte, wherein, the sealing washer sealing connection the negative pole lid with the positive pole casing, and make the negative pole lid with the positive pole casing form sealed chamber, positive pole, diaphragm, negative pole and electrolyte locate in the sealed chamber; the button cell is characterized in that the sealing ring comprises a groove which is arranged on a first side surface before the sealing ring is assembled with the anode shell and is concentric with the cathode cover, wherein the first side surface is the exposed side of the sealing ring before the button cell is sealed; therefore, the deformation of the outer surface of the negative electrode cover is avoided, the appearance quality of the battery is improved, the internal resistance of the battery is stable, meanwhile, the plastic extruded from the R position after sealing is less and more uniform, the battery is easier to clean, and the crystallization and green mould are not easy to generate in the later stage of the battery.

Description

Button cell with groove

Technical Field

The utility model relates to a button cell field especially relates to a button cell with recess.

Background

Button cell batteries have been widely used as power sources in various miniature electronic products due to their characteristics of portability, small size, etc.

Generally, after the negative electrode cover of the button cell is sealed by the sealing ring and the positive electrode cover, the R-position extrusion amount of plastic is large, and the deformation of the negative electrode cover is large, so that the overall stability and the liquid leakage prevention performance of the cell are reduced, and the service life of the cell is shortened.

SUMMERY OF THE UTILITY MODEL

In view of this, the embodiment of the present invention provides a button cell which can effectively avoid the deformation of the outer surface of the negative electrode cover, improve the appearance quality of the battery, and ensure the stable internal resistance of the battery and has a groove.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the embodiment of the utility model provides a button cell with recess, including negative pole lid, anodal casing, sealing washer, positive pole, diaphragm, negative pole and electrolyte, wherein, the sealing washer sealing connection the negative pole lid with anodal casing, and make the negative pole lid with anodal casing form sealed chamber, positive pole, diaphragm, negative pole and electrolyte locate in the sealed chamber; the button cell sealing ring is characterized by comprising a first side surface arranged before the button cell sealing ring is assembled with a positive shell and a groove concentric with a negative cover, wherein the first side surface is the exposed side of the button cell sealing ring before the button cell sealing ring is sealed.

In the above scheme, the cross section of the groove is one of a V shape, an arc shape and a trapezoid shape.

In the above scheme, the groove is located in the middle of the cross section of the sealing ring.

In the above scheme, the groove is located on one side of the cross section of the sealing ring close to the negative cover.

In the scheme, the depth of the groove is 0.1-0.8mm, and the depth of the groove is 0.1-1.0 mm.

The embodiment of the utility model provides a button cell with recess, including negative pole lid, anodal casing, sealing washer, positive pole, diaphragm, negative pole and electrolyte, wherein, the sealing washer sealing connection the negative pole lid with anodal casing, and make the negative pole lid with anodal casing form sealed chamber, positive pole, diaphragm, negative pole and electrolyte locate in the sealed chamber; the button cell is characterized in that the sealing ring comprises a groove which is arranged on a first side surface before the sealing ring is assembled with the anode shell and is concentric with the cathode cover, wherein the first side surface is the exposed side of the sealing ring before the button cell is sealed; therefore, the deformation of the outer surface of the negative electrode cover is avoided, the appearance quality of the battery is improved, the internal resistance of the battery is stable, meanwhile, the plastic extruded from the R position after sealing is less and more uniform, the battery is easier to clean, and the crystallization and green mould are not easy to generate in the later stage of the battery.

Drawings

Fig. 1 is a schematic structural view of a button cell with a groove before sealing in an embodiment of the present invention;

fig. 2 is a schematic structural view of the sealed button cell with a groove according to an embodiment of the present invention.

Detailed Description

For the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The specific meaning of the above terms in the present invention can be understood in specific cases for those skilled in the art. The technical solution of the present invention will be further explained with reference to the accompanying drawings and examples.

Referring to fig. 1 to 2, a button cell with a groove provided in an embodiment of the present invention includes a negative electrode cover 3, a positive electrode case 4, a sealing ring 2, a positive electrode, a diaphragm, a negative electrode, and an electrolyte, wherein the sealing ring hermetically connects the negative electrode cover and the positive electrode case 4, and enables the negative electrode cover 3 and the positive electrode case 4 to form a sealed cavity, and the positive electrode, the diaphragm, the negative electrode, and the electrolyte are disposed in the sealed cavity; the button cell sealing structure is characterized in that the sealing ring 2 comprises a groove 1 which is arranged on a first side surface of the sealing ring before the sealing ring is sealed with the anode shell 4 and is concentric with the cathode cover 3, wherein the first side surface is the exposed side of the sealing ring 2 before the sealing ring is sealed; therefore, the deformation of the outer surface of the cathode cover is avoided, the appearance quality of the battery is improved, the stable internal resistance of the battery is ensured, and meanwhile, the battery is easier to clean and is not easy to generate crystallization and green mould in the later period due to less and more uniform plastic extruded from the R position after sealing; further, after the groove 1 is formed, the area of the contact surface of the inner side bottom surface of the positive shell 4 in a pressing fit mode is increased, the contact surface pressure of the lower side surface of the sealing ring 2 is improved, the sealing ring 2 deforms more greatly, and the deformation of the sealed rear negative electrode cover 3 is smaller, so that the stress inside the battery is more uniform, and the sealing performance of the battery is better.

The exposed side of the sealing ring 2 before the sealing of the button cell is the part of the sealing ring 2 which can be seen outside the button cell before the sealing.

In one embodiment, the cross-sectional shape of the groove 1 includes, but is not limited to, one of a V-shape, a circular arc shape, and a trapezoidal shape.

In one embodiment, the groove 1 is located in the middle of the cross-section of the sealing ring 2.

In one embodiment, the groove 1 is located on a side of the cross section of the sealing ring 2 close to the negative cover 3.

Here, the fact that the groove 1 is located on the side, close to the negative electrode cover 3, of the cross section of the sealing ring 2 means that the groove 1 can be directly formed between the side of the negative electrode cover 3 and the sealing ring, and therefore after sealing, deformation of the outer surface of the negative electrode cover is effectively avoided, appearance quality of the battery is improved, and stability of internal resistance of the battery is guaranteed.

In one embodiment, the groove depth is 0.1 to 0.8mm, and the groove depth is 0.1 to 1.0 mm.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and scope of the present invention are all included within the protection scope of the present invention.

Claims

1. A button cell with a groove comprises a negative electrode cover, a positive electrode shell, a sealing ring, a positive electrode, a diaphragm, a negative electrode and electrolyte, wherein the sealing ring is connected with the negative electrode cover and the positive electrode shell in a sealing manner, the negative electrode cover and the positive electrode shell form a sealing cavity, and the positive electrode, the diaphragm, the negative electrode and the electrolyte are arranged in the sealing cavity; the button cell sealing structure is characterized in that the sealing ring comprises a first side surface arranged before the sealing ring is sealed with the positive shell and a groove concentric with the negative cover, wherein the first side surface is the exposed side of the sealing ring before the sealing ring is sealed with the button cell.

2. The button cell with groove according to claim 1, wherein the cross-sectional shape of the groove is one of V-shaped, circular arc, and trapezoidal.

3. The button cell with groove according to claim 1, wherein the groove is located in the middle of the cross section of the sealing ring.

4. The button cell with the groove according to claim 1, wherein the groove is located on the side of the seal ring cross section close to the negative cover.

5. Button cell with groove according to claim 1, characterized by the fact that the groove depth is 0.1-1.0 mm.