The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 16, 2010
Filed:
Mar. 30, 2006
Kei Tomihara, Sumoto, JP;
Kazuki Hamasaki, Sumoto, JP;
Yoichiri Shibata, Awaji, JP;
Takuya Okamoto, Awaji, JP;
Kenji Yamato, Minamiawaji, JP;
Etsuya Fujisaka, Awaji, JP;
Hiroshi Fukuda, Naruto, JP;
Kei Tomihara, Sumoto, JP;
Kazuki Hamasaki, Sumoto, JP;
Yoichiri Shibata, Awaji, JP;
Takuya Okamoto, Awaji, JP;
Kenji Yamato, Minamiawaji, JP;
Etsuya Fujisaka, Awaji, JP;
Hiroshi Fukuda, Naruto, JP;
Sanyo Electric Co., Ltd., Moriguchi-shi, JP;
Abstract
In the present invention, the electrode assembly is first formed, and then a tab portion is formed by compressing an active material unfilled portion in an electrode having a foamed-metal electrode substrate (Tab Portion Formation Step). Accordingly, in the manufacturing method of the present invention, even if winding misalignment is created in which the edge of the separator is located adjacent to one edge of the active material unfilled portion during the formation of the electrode assembly, the misaligned portion of the separator is pushed in the width direction of the electrode together with the active material unfilled portion when the compression is applied in the Tab Portion Formation Step. Herewith, it is less likely to tuck a part of the separator between the tab portion and the current collector when the current collector is joined in the Current Collector Joining Step.