发明名称 |
CYLINDRICAL LITHIUM SECONDARY BATTERY |
摘要 |
A cylindrical lithium secondary battery that is excellent in resistance to short-circuits, is capable of preventing a capacity loss due to dropping, and has a good balance in battery characteristics. The cylindrical lithium secondary battery includes: a cylindrical battery can; an electrode assembly; and a non-aqueous electrolyte. The electrode assembly has a porous heat-resistant layer that is interposed between the positive electrode and the negative electrode. The electrode assembly has a central cavity into which a hollow mandrel is inserted. The hollow mandrel has a slit that extends along the entire length thereof. The outer diameter A of the hollow mandrel and the width B of the slit satisfy the relation: 0.1‰¦B/A‰¦0.6. |
申请公布号 |
EP1768202(A8) |
申请公布日期 |
2007.07.04 |
申请号 |
EP20060730407 |
申请日期 |
2006.03.29 |
申请人 |
MATSUSITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
FUJIKAWA, MASATO;SUZUKI, KOHEI;INOUE, KAORU;SHIMADA, MIKINARI |
分类号 |
H01M10/0525;H01M10/0587;H01M10/36 |
主分类号 |
H01M10/0525 |
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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