发明名称 |
CYLINDRICAL LITHIUM SECONDARY BATTERY |
摘要 |
A cylindrical lithium secondary battery that is resistant to breakage of the porous heat-resistant layer and therefore excellent in both safety and battery characteristics. The cylindrical lithium secondary battery includes: a battery can having a bottom, a side wall, and an open top; an electrode assembly; a non-aqueous electrolyte; and a sealing plate covering the open top of the battery can that accommodates the electrode assembly and the electrolyte. The electrode assembly includes a strip-like positive electrode and a strip-like negative electrode that are wound together with a porous heat-resistant layer and a separator interposed between the positive and negative electrodes. The thickness A of the porous heat-resistant layer and the thickness B of the side wall of the battery can satisfy the relation: 0.005‰¦A/B‰¦0.1. |
申请公布号 |
EP1788657(A1) |
申请公布日期 |
2007.05.23 |
申请号 |
EP20060730490 |
申请日期 |
2006.03.29 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
FUJIKAWA, MASATO;SUZUKI, KOHEI;INOUE, KAORU;SHIMADA, MIKINARI |
分类号 |
H01M10/052;H01M10/0587;H01M10/36 |
主分类号 |
H01M10/052 |
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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