Battery

Patent metadata

Field	Value
Publication number	US-2016049634-A1
Application number	US-201514826165-A
Country	US
Kind code	A1
Filing date	Aug 13, 2015
Priority date	Aug 14, 2014
Publication date	Feb 18, 2016
Grant date	—

Abstract

A battery includes an electrode assembly, a cap plate comprising an electrode terminal, and an electrode lead coupled to the cap plate, wherein the electrode lead electrically connects the electrode assembly and the electrode terminal and the cap plate and the electrode lead are coupled at the center of the electrode lead, which may reduce an electric resistance of a charge/discharge path and improve output performance of the battery.

First claim

What is claimed is:

1 . A battery comprising:
an electrode assembly; a cap plate comprising an electrode terminal; and an electrode lead coupled to the cap plate, wherein the electrode lead electrically connects the electrode assembly and the electrode terminal, wherein the cap plate and the electrode lead are coupled at a center of the electrode lead.

2 . The battery of claim 1 , wherein the cap plate comprises a coupling pin that protrudes via the electrode lead, and
wherein an end of the coupling pin that is exposed through the electrode lead has been riveted or spun to be pressed onto the electrode lead.

3 . The battery of the claim 1 , wherein the electrode lead comprises:
a first part that faces and is coupled to the cap plate; and a second part that bends from the first part and faces and is coupled to an electrode tab that projects from the electrode assembly.

4 . The battery of claim 3 , wherein an avoidance space is formed in the second part of the electrode lead.

5 . The battery of claim 4 , wherein the second part of the electrode lead is divided into two parts by the avoidance space.

6 . The battery of claim 4 , wherein the second part of the electrode lead is formed as a plate in which the avoidance space is punched as a hole.

7 . The battery of claim 3 , wherein the second part of the electrode lead comprises a first layer and a second layer, and
wherein the electrode tab is between the first and second layers.

8 . The battery of claim 3 , wherein the second part of the electrode lead comprises a first layer and a second layer, and
wherein the electrode tab is on the first and second layers.

9 . The battery of claim 3 , wherein the second part of the electrode lead comprises a first layer and a second layer,
wherein the first layer is divided into two parts to provide an avoidance space, wherein the second layer comprises a plate, and wherein the second layer covers a portion of the avoidance space of the first part.

10 . The battery of claim 3 , wherein the second part of the electrode comprises a first layer and a second layer, and
wherein the first and second layers are divided into two parts to form an avoidance space.

11 . The battery of claim 3 , wherein the first part of the electrode lead comprises a first layer and a second layer.

12 . The battery of claim 1 , wherein the electrode lead partially or entirely comprises two layers.

13 . The battery of claim 1 , wherein the cap plate comprises a coupling pin that protrudes via the electrode lead,
wherein a lower end of the coupling pin, which is exposed through the electrode lead, has been riveted or spun to be pressed onto the electrode lead, and wherein an extended portion of the lower end of the coupling pin partially overlaps the electrode lead.

14 . The battery of claim 13 , wherein the electrode lead comprises a first part coupled to the cap plate, and a second part that extends from the first part to the electrode assembly, and
wherein the second part of the electrode lead partially overlaps the extended portion of the lower end of the coupling pin.

15 . The battery of claim 1 , wherein the electrode lead comprises a first part coupled to the cap plate, a second part that extends from the first part to the electrode assembly, and folded portions that connect the first and second parts such that the first and second parts and bent with respect to each other, and
wherein the first part expands between two folded portions that are spaced apart.

16 . The battery of claim 15 , wherein a coupling pin, which protrudes via the electrode lead, is coupled to an expanded portion of the first part.

Assignees

• Samsung Sdi Co Ltd

Inventors

• Hwang San
• Yoon Jangho

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