| 摘要 |
PROBLEM TO BE SOLVED: To provide a power storage element and a manufacturing method for the same that can suppress joint defect between an electrode body and a collector while maintaining a high mass production efficiency.SOLUTION: In a power storage element having an electrode body 140 configured by laminating an electrode and a separator, the electrode has formation portions 141A, 142A having active material layers formed therein, and non-formation portions 141B, 142B which are adjacent to the formation portions and in which no active material layer is formed. The electrode body is configured by an electrode body portion S1 comprising a laminate of plural formation portions and separators, and a positive electrode lamination portion P1 and a negative electrode lamination portion N1 which are disposed at both the ends of the electrode body and comprise laminates of the plural non-formation portions. The positive electrode lamination portion P1 and the negative electrode lamination portion N1 have one or more bundled portions Q1 and R1 obtained by stacking and bundling the end portions of the adjacent non-formation portions. The widths of the plural non-formation portions are fixed, and the arrangement direction of the boundary between the formation portion and the non-formation portion adjacent to the formation portion is inclined from the lamination direction of the electrode and the separator.SELECTED DRAWING: Figure 3 |
