| 摘要 |
PROBLEM TO BE SOLVED: To provide a secondary battery that dispenses with process of insertion of an insulation plate into the bottom part of the battery can, and exhibit equiva lent battery performance. SOLUTION: A nonaqueous electrolyte secondary battery is provided, such that the battery is equipped with an insulated layer formed by incorporating liquefied synthetic resin or synthetic resin precursor into the bottom of a battery can making contact with the end of the battery element. The battery element is prepared by winding layers laminated, in such a manner that the positive and negative electrodes are interposed by a separator. |
