Invention Grant
- Patent Title: Storage battery manufacturing method which uses a polar plate having a foamed-metal electrode substrate and joins a current collector to the electrode substrate, and storage battery obtained through the manufacturing method
- Patent Title (中): 使用具有发泡金属电极基板的极板与电极基板连接集电体的蓄电池制造方法以及通过制造方法得到的蓄电池
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Application No.: US11393003Application Date: 2006-03-30
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Publication No.: US07678501B2Publication Date: 2010-03-16
- Inventor: Kei Tomihara , Kazuki Hamasaki , Yoichiri Shibata , Takuya Okamoto , Kenji Yamato , Etsuya Fujisaka , Hiroshi Fukuda
- Applicant: Kei Tomihara , Kazuki Hamasaki , Yoichiri Shibata , Takuya Okamoto , Kenji Yamato , Etsuya Fujisaka , Hiroshi Fukuda
- Applicant Address: JP Moriguchi-shi
- Assignee: Sanyo Electric Co., Ltd.
- Current Assignee: Sanyo Electric Co., Ltd.
- Current Assignee Address: JP Moriguchi-shi
- Agency: Westerman, Hattori, Daniels & Adrian, LLP
- Priority: JP2005-102254 20050331; JP2005-283603 20050929
- Main IPC: H01M2/26
- IPC: H01M2/26 ; H01M10/04 ; H01M4/66 ; H01M4/80
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.
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