Housing assembly of button cell, button cell and electronic product

Patent metadata

Field	Value
Publication number	US-2024429511-A1
Application number	US-202418825495-A
Country	US
Kind code	A1
Filing date	Sep 5, 2024
Priority date	Mar 3, 2020
Publication date	Dec 26, 2024
Grant date	—

Abstract

Embodiments of the present invention provide a housing assembly of button cell, a button cell and an electronic product. The housing assembly of button cell includes: a housing and a conductive part, the housing having a holding cavity that is capable of holding a cell of the button cell, the cell having a first tab and a second tab, the housing being provided with a through hole, the conductive part being positioned at and blocking the through hole, and the conductive part and the through hole being sealed and insulated; where, the number of the conductive part is one or two, and when the number of the conductive part is two, the housing is provided with two through holes, where the conductive parts correspond to the through holes one by one. It is beneficial to improving sealability of the housing assembly of button cell.

First claim

What is claimed is:

1 . A housing assembly of button cell, comprising: a housing and a conductive part, the housing and the conductive part enclosing together to form a holding cavity for holding a cell of the button cell; wherein,
the cell of the button cell has a first tab and a second tab; the housing is provided with a through hole, and the conductive part penetrates through the through hole, and a sealing rubber ring for sealing and insulating the conductive part and an inner wall of the through hole is provided between the conductive part and the inner wall of the through hole; the conductive part comprises a columnar part penetrated through the through hole, and an end of the columnar part facing the cell is provided with a sheet part integrally formed with the columnar part, and an end of the columnar part facing away from the cell extends outwardly with a flanging around the columnar part; wherein the housing has two oppositely disposed end surfaces and a cylindrical sidewall located between the two end surfaces, an outer surface of the cylindrical sidewall has a flat surface extending along a direction of cylindrical generatrix, and the conductive part is located on the flat surface.

2 . The housing assembly of button cell according to claim 1 , wherein an axial direction of the columnar part is provided with a fabrication hole for welding, wherein a welding between the sheet part of the conductive part and the second tab of the cell of the button cell is conducted from a side of the sheet part located in the fabrication hole.

3 . The housing assembly of button cell according to claim 2 , wherein a part of the sheet part located in the fabrication hole has a welding mark, and the welding mark is insulated from the cell of the button cell through the insulating sheet.

4 . The housing assembly of button cell according to claim 1 , wherein a gasket is provided between the flanging and the sealing rubber ring.

5 . The housing assembly of button cell according to claim 1 , wherein,
the number of the conductive part is one, and the conductive part is configured to electrically connect with one of the first tab and the second tab, and the housing is electrically connected with the other one of the first tab and the second tab; or, the number of the conductive part is two, and the housing is provided with two through holes, wherein the conductive parts correspond to the through holes one by one, and wherein one of the two conductive parts is configured to electrically connect with the first tab, and the other one of the two conductive parts is configured to electrically connect with the second tab.

6 . The housing assembly of button cell according to claim 1 , wherein the housing includes a first housing and a second housing, and the first housing and the second housing are integral parts.

7 . The housing assembly of button cell according to claim 2 , wherein the housing includes a first housing and a second housing, and the first housing and the second housing are integral parts.

8 . The housing assembly of button cell according to claim 1 , wherein hardness of the conductive part is smaller than hardness of the housing.

9 . The housing assembly of button cell according to claim 2 , wherein hardness of the conductive part is smaller than hardness of the housing.

10 . The housing assembly of button cell according to claim 3 , wherein hardness of the conductive part is smaller than hardness of the housing.

11 . The housing assembly of button cell according to claim 1 , wherein at least a part of a housing wall of the housing has a thinning area, and thickness of the housing wall in the thinning area is smaller than thickness of other parts of the housing wall.

12 . The housing assembly of button cell according to claim 2 , wherein at least a part of a housing wall of the housing has a thinning area, and thickness of the housing wall in the thinning area is smaller than thickness of other parts of the housing wall.

13 . The housing assembly of button cell according to claim 3 , wherein at least a part of a housing wall of the housing has a thinning area, and thickness of the housing wall in the thinning area is smaller than thickness of other parts of the housing wall.

14 . The housing assembly of button cell according to claim 1 , wherein an insulating sheet is clamped between the cell of the button cell and the second tab, the insulating sheet is provided with a clearance area for avoiding the second tab, and the insulating sheet has a circular shape with a cut surface.

15 . The housing assembly of button cell according to claim 2 , wherein an insulating sheet is clamped between the cell of the button cell and the second tab, the insulating sheet is provided with a clearance area for avoiding the second tab, and the insulating sheet has a circular shape with a cut surface.

16 . The housing assembly of button cell according to claim 3 , wherein an insulating sheet is clamped between the cell of the button cell and the second tab, the insulating sheet is provided with a clearance area for avoiding the second tab, and the insulating sheet has a circular shape with a cut surface.

17 . The housing assembly of button cell according to claim 6 , wherein a side of the second housing facing the first housing is provided with a boss matching an opening of the first housing, and the boss is provided with a tab groove for receiving the first tab.

18 . The housing assembly of button cell according to claim 1 , wherein a position where the second tab is connected with the sheet part is depressed in a direction away from the sheet part to form a conductive groove matching a shape of the sheet part.

19 . A button cell, comprising: a cell and a housing assembly of button cell, wherein
the housing assembly of button cell comprises: a housing and a conductive part, the housing and the conductive part enclosing together to form a holding cavity for holding a cell of the button cell; wherein, the cell of the button cell has a first tab and a second tab; the housing is provided with a through hole, and the conductive part penetrates through the through hole, and a sealing rubber ring for sealing and insulating the conductive part and an inner wall of the through hole is provided between the conductive part and the inner wall of the through hole; the conductive part comprises a columnar part penetrated through the through hole, and an end of the columnar part facing the cell is provided with a sheet part integrally formed with the columnar part, and an end of the columnar part facing away from the cell extends outwardly with a flanging around the columnar part; wherein the housing has two oppositely disposed end surfaces and a cylindrical sidewall located between the two end surfaces, an outer surface of the cylindrical sidewall has a flat surface extending along a direction of cylindrical generatrix, and the conductive part is located on the flat surface.

20 . An electronic product, comprising: a button cell, wherein
the button cell comprises: a cell and a housing assembly of button cell, wherein the housing assembly of button cell comprises: a housing and a conductive part, the housing and the conductive part enclosing together to form a holding cavity for holding a cell of the button cell; wherein, the cell of the button cell has a first tab and a second tab; the housing is provided with a through hole, and the conductive part penetrates through the through hole, and a sealing rubber ring for

Assignees

• Zhuhai Cosmx Battery Co Ltd

Inventors

• Peng Ning
• Xie Bin
• Wang Yongwang

Classifications

• H01M50/181

  for button or coin cells · CPC title

• H01M50/193

  Organic material · CPC title

• H01M50/186

  characterised by the disposition of the sealing members · CPC title

• H01M50/184

  characterised by their shape or structure · CPC title

• H01M50/538

  Connection of several leads or tabs of wound or folded electrode stacks · CPC title