| 摘要 |
PROBLEM TO BE SOLVED: To provide a power storage device which can be sealed so that a sealing plug cannot be removed from a liquid injection hole after degassing, while enabling the degassing from the liquid injection hole, and to provide a method for manufacturing a power storage device.SOLUTION: A sealing structure 30 of a liquid injection hole 14c in a secondary battery 10 includes an annular seal member 31 adhering to the inner peripheral surface of the liquid injection hole 14c. The sealing structure 30 includes an inside plug 40 disposed on the inside of the seal member 31. The inside plug 40 has a diameter reduction part 43 where the diameter of the inner peripheral surface is reduced in a direction from the outer wall surface 14b toward the inner wall surface 14a of a lid member 14, and has a female screw part 42 in the inner peripheral surface of the lid member 14 closer to the outer wall surface 14b than the diameter reduction part 43. Furthermore, the sealing structure 30 includes a sealing plug 50 disposed on the inside of the inside plug 40, and increasing the diameter from the inside of the diameter reduction part 43. |
