| 摘要 |
PROBLEM TO BE SOLVED: To provide a reliable and safe alkali secondary battery in which an internal shorting during manufacture or use is suppressed to raise a manufacture yield. SOLUTION: There are provided a positive electrode 15 comprising a lead 19 welded at least at a part of the end part along a winding direction of a conductive substrate 18 and an active-material-contained mixture, a negative electrode 16, and a separator 17. The positive electrode 15, the negative electrode 16, and the separator 17 are wound in spiral. Further, there are provided electrodes 14 where a lead welding end part 24 in the inner peripheral region of positive electrode except for at least an outermost peripheral region L of positive electrode in one spiral plane protrudes, a positive electrode collector plate 26 welded to at least a part of the protruded lead welding end part 24, and a vessel 11 in which, also acting as a negative electrode terminal, at least the electrodes 14 and an positive electrode collector 26 are housed. |
