发明名称 |
Nonaqueous electrolyte secondary cell |
摘要 |
A nonaqueous electrolyte secondary cell having a rolled-up electrode unit housed in a cell can and comprising a positive electrode and a negative electrode each formed by coating a surface of a striplike current collector with an electrode material. According to a first embodiment, the current collector of at least one of the positive electrode and the negative electrode comprises a plurality of current collector pieces 42 arranged along one direction and a PTC element 5 interconnecting each pair of adjacent current collector pieces 42. Alternatively with a second embodiment, at least one of the positive electrode and the negative electrode comprises a PTC element held between opposed faces of an uncoated portion of the current collector thereof and a base end portion of a current collector tab. The PTC element serves to prevent continuous occurrence of a current in excess of a predetermined value and realizes a high energy density.
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申请公布号 |
US2001018147(A1) |
申请公布日期 |
2001.08.30 |
申请号 |
US20010819643 |
申请日期 |
2001.03.29 |
申请人 |
SANYO ELECTRIC CO., LTD. |
发明人 |
YANAI ATSUSHI;OHKITA KAZUNARI;YANAGIDA KATSUNORI;MAEDA TAKESHI;FUNAHASHI ATSUHIRO;CHIKANO YOSHITO;NOHMA TOSHIYUKI;YONEZU IKUO;NISHIO KOJI |
分类号 |
H01M2/26;H01M2/34;H01M4/02;H01M4/64;H01M4/66;H01M6/10;H01M6/50;H01M10/40;H01M10/42;H01M10/50;(IPC1-7):H01M10/50 |
主分类号 |
H01M2/26 |
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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