Battery including an insulation spacer

Patent metadata

Field	Value
Publication number	US-10411241-B2
Application number	US-201514826169-A
Country	US
Kind code	B2
Filing date	Aug 13, 2015
Priority date	Aug 14, 2014
Publication date	Sep 10, 2019
Grant date	Sep 10, 2019

Abstract

A battery including an electrode assembly having an electrode tab; an insulating spacer having a welding groove at which the electrode tab protruding from the electrode assembly is assembled to the insulating spacer; and an electrode lead to which the electrode tab is welded. In the insulating spacer, the welding groove for exposing the electrode tab is formed at a location where the electrode tab is assembled to the insulating spacer.

First claim

What is claimed is:

1. A battery comprising:
an electrode assembly comprising an electrode tab protruding from the electrode assembly;
an electrode lead to which the electrode tab is welded; and
an insulating spacer comprising a welding groove at which the electrode tab is welded to the electrode lead;
wherein the electrode tab protrudes from the electrode assembly through a tab hole in the insulating spacer and into the welding groove;
wherein, in the insulating spacer, the welding groove for exposing the electrode tab is at a location where the electrode tab is assembled to the insulating spacer; and
wherein the welding groove is defined by opposing surfaces of the insulating spacer that face each other and partially surround the welding groove.

2. The battery of claim 1 , further comprising an insulator that is on and coupled to the insulating spacer to seal the welding groove.

3. The battery of claim 2 , wherein the insulator couples the electrode assembly and the insulating spacer to each other.

4. The battery of claim 3 , wherein the insulator completely surrounds the electrode assembly and the insulating spacer.

5. The battery of claim 2 , wherein the insulator is a polymer film that becomes an adhesive when the insulator reacts with electrolyte.

6. The battery of claim 1 , wherein the welding groove extends through a front side and a back side of the insulating spacer.

7. The battery of claim 1 , wherein a height of the welding groove is defined by a first rib and a second rib that are at a front side and a back side of the insulating spacer, respectively.

8. The battery of claim 7 , wherein the first and second ribs are at a lower portion of the insulating spacer, and
the welding groove is at an upper portion of the first and second ribs.

9. A battery comprising:
an electrode assembly comprising an electrode tab protruding from the electrode assembly;
an insulating spacer comprising a welding groove at which the electrode tab protruding from the electrode assembly is assembled to the insulating spacer; and
an electrode lead to which the electrode tab is welded,
wherein, in the insulating spacer, the welding groove for exposing the electrode tab is at a location where the electrode tab is assembled to the insulating spacer;
wherein a height of the welding groove is defined by a first rib and a second rib that are at a front side and a back side of the insulating spacer, respectively;
wherein the first rib at the front side is at an upper portion of the insulating spacer,
the second rib at the back side is at a lower portion of the insulating spacer, and
the welding groove comprises a space between the first and second ribs.

10. The battery of claim 1 , wherein the insulating spacer comprises a surface which faces the electrode assembly, the surface being either an upper surface or a lower surface of the insulating spacer, wherein the surface has a largest contact area from among the upper surface and the lower surface of the insulating spacer.

11. The battery of claim 1 , wherein the insulating spacer is coupled to a cap plate.

12. The battery of claim 11 , wherein either the insulating spacer or the cap plate comprises a protrusion, and whichever of the insulating spacer and the cap plate that does not comprise the protrusion, comprises a hole or a concave unit having a shape corresponding to the protrusion.

13. The battery of claim 1 , wherein the insulating spacer is between a cap plate and the electrode lead.

14. The battery of claim 1 , wherein the welding groove is wider than the electrode tab.

15. The battery of claim 1 , wherein the electrode assembly comprises a positive electrode plate, a negative electrode plate, and a separator between the positive and negative electrode plates, and
the positive electrode plate is at an outermost side of the electrode assembly.

16. The battery of claim 1 , wherein the electrode lead is around the welding groove of the insulating spacer, and
the electrode lead is wider than the welding groove.

17. The battery of claim 1 , wherein the electrode lead is comprised partially or entirely of two layers.

18. A battery comprising:
an electrode assembly comprising an electrode tab protruding from the electrode assembly;
an electrode lead to which the electrode tab is welded;
an insulating spacer comprising a welding groove into which the electrode tab extends and at which the electrode tab is welded to the electrode lead; and
wherein the welding groove is defined by opposing surfaces of the insulating spacer that face each other and partially surround the welding groove.

Assignees

• Samsung Sdi Co Ltd

Inventors

• Kang Seonyeong

Classifications

• H01M50/15 Primary

  for prismatic or rectangular cells (H01M50/153 takes precedence) · CPC title

• H01M50/477

  characterised by their shape · CPC title

• H01M50/566

  by welding, soldering or brazing · CPC title

• H01M50/567

  by fixing means, e.g. screws, rivets or bolts · CPC title

• H01M50/176

  for prismatic or rectangular cells (H01M50/181 takes precedence) · CPC title