发明名称 |
Lithium ion secondary battery |
摘要 |
A lithium ion secondary battery in which an abnormal overheat due to a short circuit of a current collecting portion of one electrode and an electrode material mixture of the other is prevented. The lithium ion secondary battery has: a positive electrode including a core material having a current collecting portion and a material mixture carrying portion and a material mixture layer carried thereon; a negative electrode including a core material having a current collecting portion and a material mixture carrying portion and a material mixture layer carried thereon; a separator and a porous electron-insulating layer including an inorganic oxide filler and a binder both interposed between the positive and negative electrodes; and a non-aqueous electrolyte. The insulating layer is carried on a region including surfaces of the positive electrode current collecting portion and material mixture layer, and/or a region including surfaces of the negative electrode current collecting portion and material mixture layer. The positive and negative electrodes are wound with the separator and the insulating layer interposed therebetween.
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申请公布号 |
US7745042(B2) |
申请公布日期 |
2010.06.29 |
申请号 |
US20040577494 |
申请日期 |
2004.12.28 |
申请人 |
PANASONIC CORPORATION |
发明人 |
FUJINO AKIKO;OHATA TSUMORU;HAYASHI TETSUYA |
分类号 |
H01M2/14;H01M2/16;H01M2/34;H01M4/62;H01M10/02;H01M10/052;H01M10/36 |
主分类号 |
H01M2/14 |
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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