Battery and electronic device

Patent metadata

Field	Value
Publication number	US-2025046924-A1
Application number	US-202418925533-A
Country	US
Kind code	A1
Filing date	Oct 24, 2024
Priority date	Dec 9, 2022
Publication date	Feb 6, 2025
Grant date	—

Abstract

The battery in the embodiments of the present application includes a battery body and a protective glue layer. The protective glue layer includes a first adhesive segment and a second adhesive segment that are circumferentially coated on an outer peripheral wall of the battery body, and the first adhesive segment and the second adhesive segment have a connecting notch formed therebetween in a circumferential direction of the outer peripheral wall; both a width of the first adhesive segment and a width of the second adhesive segment are less than a thickness of the battery body in a first direction, to form an exposed area; and part of the outer peripheral wall of the battery body is exposed outside the protective glue layer through the connecting notch and the exposed area.

First claim

What is claimed is:

1 . A battery, comprising: a battery body and a protective glue layer; wherein the protective glue layer comprises a first adhesive segment and a second adhesive segment that are circumferentially coated on an outer peripheral wall of the battery body, and the first adhesive segment and the second adhesive segment have a connecting notch formed therebetween in a circumferential direction of the outer peripheral wall;
both a width of the first adhesive segment and a width of the second adhesive segment are less than a thickness of the battery body in a first direction, to form an exposed area; and part of the outer peripheral wall of the battery body is exposed outside the protective glue layer through the connecting notch and the exposed area.

2 . The battery according to claim 1 , wherein the protective glue layer further comprises a third adhesive segment, the third adhesive segment is disposed between the first adhesive segment and the second adhesive segment, and the third adhesive segment is connected to both the first adhesive segment and the second adhesive segment;
in the first direction, a width of the third adhesive segment is smaller than the thickness of the battery body, and the width of the third adhesive segment is greater than the width of the first adhesive segment and the width of the second adhesive segment.

3 . The battery according to claim 2 , wherein the battery body comprises a shell, a battery cell, a first shell cover, a second shell cover and a first insulating sheet; the shell comprises an installation cavity with an opening, and the battery cell is disposed in the installation cavity through the opening;
the first shell cover, the first insulating sheet and the second shell cover are stacked along the first direction, the first insulating sheet is disposed between the first shell cover and the second shell cover, and the second shell cover is disposed in the installation cavity through the opening; the first shell cover has a first through hole, the first insulating sheet has a second through hole, a central axis of the first through hole coincides with a central axis of the second through hole, the second shell cover has a connecting terminal extending toward the first shell cover, the connecting terminal matches both the first through hole and the second through hole, and the connecting terminal is exposed on a surface of the first shell cover through the first through hole and the second through hole; the battery cell comprises a first tab and a second tab, the first tab is electrically connected to an inner wall surface of the shell, and the second tab is electrically connected to the second shell cover.

4 . The battery according to claim 3 , wherein the first shell cover comprises a front connecting surface and a reverse connecting surface opposite to each other along the first direction, the reverse connecting surface is connected to the first insulating sheet, and an edge of the reverse connecting surface is provided with an annular connecting groove, and the annular connecting groove matches the opening.

5 . The battery according to claim 4 , wherein the battery body further comprises a first adapting member, a second adapting member and a second insulating sheet;
the front connecting surface is provided with an adhesive sinking platform matching the second insulating sheet; a first connecting section of the first adapting member is electrically connected to the front connecting surface of the first shell cover, and a first adaptor of the first adapting member is correspondingly placed on the second insulating sheet; a second connecting section of the second adapting member is electrically connected to the connecting terminal, and a second adaptor of the second adapting member is correspondingly placed on the second insulating sheet.

6 . The battery according to claim 5 , wherein the first adapting member further comprises a positioning member, the first connecting section comprises a first end and a second end, the first adaptor is connected to the first end, the positioning member is connected to the second end, the positioning member extends out of the battery body in a second direction, and the positioning member is disposed on a center line between the first adaptor and the second adaptor;
wherein the second direction is perpendicular to the first direction.

7 . The battery according to claim 6 , wherein the positioning member is parallel to the first connecting section.

8 . The battery according to claim 6 , wherein the positioning member is perpendicular to the first connecting section, the positioning member extends along the first direction, and a gap is present between the positioning member and the outer peripheral wall of the battery body.

9 . The battery according to claim 8 , wherein the positioning member comprises a bent end, and the bent end is perpendicular to the outer peripheral wall of the battery body and extends away from the outer peripheral wall of the battery body.

10 . The battery according to claim 5 , wherein a center line of the third adhesive segment is aligned with a center line of a gap between the first adapting member and the second adapting member.

11 . The battery according to claim 5 , wherein the connecting notch is symmetrically provided with the first adapting member and the second adapting member along a center line of the battery body.

12 . The battery according to claim 2 , wherein in the first direction, the width of the first adhesive segment and the width of the second adhesive segment are smaller than a width of the outer peripheral wall of the battery body by 2.5 to 3 mm, and the width of the third adhesive segment is smaller than the width of the outer peripheral wall of the battery body by 1 to 2 mm.

13 . The battery according to claim 2 , wherein one end of the first adhesive segment and one end of the second adhesive segment are connected to the third adhesive segment, and the other end of the first adhesive segment and the other end of the second adhesive segment are spaced apart to form, in the circumferential direction of the outer peripheral wall of the battery body, the connecting notch of 6 to 8 mm.

14 . The battery according to claim 3 , wherein the first tab is welded to the inner wall surface of the shell, and a projection area of a first weld mark on the first tab in the first direction is smaller than a projection area of the first tab in the first direction;
the second tab is welded to the second shell cover, and a projection area of a second weld mark on the second tab in the first direction is smaller than a projection area of the second tab in the first direction.

15 . The battery according to claim 3 , wherein the shell is provided with a liquid-injection hole, and an edge of the liquid-injection hole is provided with a sealing face;
the battery body further comprises a sealing nail, the sealing nail has an abutment portion and a sealing protrusion, and the sealing protrusion matches the liquid-injection hole; and the abutment portion abuts against the sealing face while the sealing protrusion is connected to the liquid-injection hole.

16 . The battery according to claim 15 , wherein the abutment portion is welded to the sealing face.

17 . The battery according to claim 5 , wherein the battery cell has a front end surface and a back end surface in the first direction, the front end surface is adhered with a third insulating sheet, and the back end surface is adhered with a fourth insulating sheet;
both the third insula

Assignees

• Zhuhai Cosmx Battery Co Ltd

Inventors

• Xi Yang
• Zhou Jinyong
• Xie Jichun
• Wei Zhida

Classifications

• H01M50/171

  using adhesives or sealing agents · CPC title

• H01M50/109

  of button or coin shape · CPC title

• H01M10/052 Primary

  Li-accumulators · CPC title

• H01M50/153

  for button or coin cells · CPC title

• H01M50/627

  Filling ports · CPC title