Title:
SEALED BATTERY
Document Type and Number:
WIPO Patent Application WO/2022/196442
Kind Code:
A1
Abstract:
Provided is a low-resistance sealed battery in which solidification cracking of a weld part of a negative electrode lead and an outer can is inhibited. A sealed battery according to one aspect of the present disclosure comprises: an electrode body obtained by winding a positive electrode and a negative electrode with a separator therebetween; a bottomed cylinder–shaped outer can that accommodates the electrode body; and a sealing body that blocks an opening part of the outer can. The outer can and a negative electrode lead connected to the negative electrode are welded at a weld part formed from the outside surface of the outer can to the negative electrode lead. The outer can is composed of a metal including Fe, the negative electrode lead is composed of a metal having Cu as a principal ingredient, and the Cu concentration of the weld part is 10 mass% or less.
Inventors:
OKIMOTO RYOTA
Application Number:
PCT/JP2022/009996
Publication Date:
September 22, 2022
Filing Date:
March 08, 2022
Export Citation:
Assignee:
SANYO ELECTRIC CO (JP)
International Classes:
H01M50/107; H01M50/119; H01M50/531; H01M50/534; H01M50/545
Foreign References:
| JP2010003686A | 2010-01-07 | |||
| JP2004158318A | 2004-06-03 | |||
| JP2001176490A | 2001-06-29 | |||
| JP2010003686A | 2010-01-07 |
Attorney, Agent or Firm:
YKI INTELLECTUAL PROPERTY ATTORNEYS (JP)
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