| 摘要 |
PROBLEM TO BE SOLVED: To obtain a square type nonaqueous electrolytic solution secondary battery in which the shape of wound core part is stable, and which has a high volume efficiency in the square type battery to which positive and negative electrode are wound. SOLUTION: The square type nonaqueous electrolytic solution secondary battery has the positive electrode to whose both side ends of wound core part the positive electrode active substance is coated, the negative electrode to whose both side ends of wound core part the negative electrode active substance is coated, the battery element to which the tip end of wound core part of negative electrode is arranged at the position of the first folding part of the wound core part electrode, and laminated via a separator, and at the end of outer circumferential part of positive electrode and negative electrode tab, a mounting part of positive electrode electro-conductive tab and the negative electrode electro-conductive tab is possessed. |
