发明授权
US08202646B2 Battery can with cutting-edge portion higher than cutting start portion, manufacturing method and manufacturing device therefore, and battery using the same
有权
因此，具有高于切割起始部分的前端部分的电池罐，因此制造方法和制造装置以及使用其的电池
- 专利标题： Battery can with cutting-edge portion higher than cutting start portion, manufacturing method and manufacturing device therefore, and battery using the same
- 专利标题（中）： 因此，具有高于切割起始部分的前端部分的电池罐，因此制造方法和制造装置以及使用其的电池
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申请号： US12602732申请日： 2009-01-22
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公开(公告)号： US08202646B2公开(公告)日： 2012-06-19
- 发明人: Toshiki Ishikawa , Yoshio Goda , Tadahiro Tokumoto , Masaji Moriwaki , Seiichi Kato
- 申请人： Toshiki Ishikawa , Yoshio Goda , Tadahiro Tokumoto , Masaji Moriwaki , Seiichi Kato
- 申请人地址： JP Osaka
- 专利权人： Panasonic Corporation
- 当前专利权人： Panasonic Corporation
- 当前专利权人地址： JP Osaka
- 代理机构： McDermott Will & Emery LLP
- 优先权： JP2008-042469 20080225; JP2008-166815 20080626
- 国际申请： PCT/JP2009/000226 WO 20090122
- 国际公布： WO2009/107318 WO 20090903
- 主分类号： H01M2/00
- IPC分类号： H01M2/00 ; H01M2/02 ; H01M2/04 ; H01M6/08 ; B21C1/00 ; B21H1/18
摘要：
A battery case is made by cutting from a blank case of a bottomed cylindrical battery case having an unwanted portion at an opening portion the unwanted portion from the case wall in the circumferential direction by a blade. The cutting of the case wall is performed so as to render a cutting-end portion higher than a cutting-start portion. Thus, re-cutting of the cutting-start portion by the blade after it has already completed one rotation can be avoided. As a result, the generation of thread-like chips from re-cutting of the cut surface can be avoided.
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