| 摘要 |
PROBLEM TO BE SOLVED: To provide a power storage element in which sealability can be enhanced in the vicinity of the electrode terminal of a power storage element.SOLUTION: In a power storage element 100 including a container 110, an electrode body 170, an electrode terminal 130, a collector member 160 and an external insulation sealant 120 for insulating the container and the electrode terminal, the electrode terminal has a columnar connection part 132 penetrating the container and being connected with the collector member, an a planar terminal body 131, i.e., the end of the connection part, arranged on the outside of the container. The external insulation sealant has a planar member arranged between the container and the terminal body, the planar member is provided annularly around the connection part, and has a protrusion 125 protruding in a direction crossing the planar member. The protrusion has a holding part 125a capable of holding liquid at the tip thereof. |
