| 摘要 |
PROBLEM TO BE SOLVED: To suppress the amount of electrolyte adhering to the inner surface of a partition wall, and moving between the shaft of a plug member and the inner peripheral surface of an injection hole to the outside.SOLUTION: A power storage element includes a housing body provided with an injection hole 45 for injecting electrolyte in the partition wall (lid member 41), an electrode body housed in the housing body, and a plug member 50 for closing the injection hole 45. A protrusion 101 surrounding the injection hole 45 is formed on the inner surface (lower surface W) of the lid member 41. Since arrival of the electrolyte, adhering to the lower surface W of the lid member 41 to the plug member 50 can be suppressed, the amount of electrolyte moving between the shaft 53 of the plug member 50 and the inner peripheral surface of the injection hole 45 to the outside by capillary phenomenon can be suppressed.SELECTED DRAWING: Figure 6 |
