Title:
円筒形電池及びその製造方法
Document Type and Number:
Japanese Patent JP7341123
Kind Code:
B2
Abstract:
A cylindrical battery includes a bottom-closed cylindrical exterior package can which receives an electrode body. A lead connected to one of a positive electrode and a negative electrode of the electrode body is extended from the electrode body and is welded to a bottom portion of the exterior package can. When the bottom portion is viewed from the outside of the exterior package can, at least a part of the welding portion between the lead and the bottom portion formed by a molten mark is formed outside of a concentric circle of the bottom portion which has a diameter equivalent to the width of the lead.
Inventors:
Ryunosuke Yokoo
Ichiro Shimizu
Ichiro Shimizu
Application Number:
JP2020510406A
Publication Date:
September 08, 2023
Filing Date:
February 18, 2019
Export Citation:
Assignee:
Panasonic Energy Co., Ltd.
International Classes:
H01M50/536; B23K26/02; B23K26/21; B23K26/26; H01M10/04; H01M50/107
Domestic Patent References:
| JP9330697A | ||||
| JP2017107647A | ||||
| JP2012004074A |
Foreign References:
| WO2010150458A1 |
Attorney, Agent or Firm:
Patent Attorney Corporation YKI International Patent Office
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