| 摘要 |
PROBLEM TO BE SOLVED: To provide a power storage element that can suppress damage of a spacer.SOLUTION: A power storage element 10 has an electrode body 140 formed by winding a positive electrode and a negative electrode, an exterior packaging body 100 in which the electrode body 140 is mounted, and a positive electrode collector body 120 disposed between the electrode body 140 and the exterior packaging body 100. The electrode body 140 has a pair of confronting flat portions 143 and 144, and curved portions 145 and 146 for linking the pair of flat portions 143 and 144. The positive electrode collector body 120 covers only a part of the flat portion 144 at the flat portion 144, and at least a part of the covering portion is disposed at an end portion 144a of the flat portion 144 in the winding direction of the electrode body 140.SELECTED DRAWING: Figure 5 |
