| 摘要 |
PROBLEM TO BE SOLVED: To provide a battery which can acquire optimal battery strength without cost-up, which can prevent output drop and distortion of a cell, which can increase energy density and furthermore which is unlikely to be short-circuited and changed in performance.SOLUTION: In a battery 1 configured by winding an electrode plate 3 having a positive electrode plate, a negative electrode plate and a separator arranged between the positive electrode plate and the negative electrode plate, two shaft cores 3a, 3b are formed by winding the electrode plate 3 from both side end parts, respectively. |
