发明名称 |
BATTERY CAN, MANUFACTURING METHOD AND MANUFACTURING DEVICE THEREFOR, AND BATTERY USING THE SAME |
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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申请公布号 |
US2010183911(A1) |
申请公布日期 |
2010.07.22 |
申请号 |
US20090602732 |
申请日期 |
2009.01.22 |
申请人 |
ISHIKAWA TOSHIKI;GODA YOSHIO;TOKUMOTO TADAHIRO;MORIWAKI MASAJI;KATO SEIICHI |
发明人 |
ISHIKAWA TOSHIKI;GODA YOSHIO;TOKUMOTO TADAHIRO;MORIWAKI MASAJI;KATO SEIICHI |
分类号 |
H01M2/02;B23B5/14;B26D3/16 |
主分类号 |
H01M2/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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