| 摘要 |
PROBLEM TO BE SOLVED: To provide a battery capable of uniformizing the reaction distribution of an active material in a positive electrode plate 1 and a negative electrode plate 2 over the whole power generation element 4 by widely forming a width L for the outer peripheral side with wider interval D between current collecting lugs 1a and 2a. SOLUTION: The width L of the current collecting lugs 1a and 2a of the positive electrode plate 1 and the negative electrode plate 2 in the winding type power generation element 4 is widely formed for the outer peripheral side of winding so that the relationship of L=r×θ is satisfied, when a distance from the winding center of the current collecting lugs 1a and 2a is r. |
