| 摘要 |
PROBLEM TO BE SOLVED: To provide a power storage device capable of preventing positional deviation of an insulation member when screwing a nut.SOLUTION: A secondary battery 10 has a proximal part 43 where a positive electrode terminal 41 and a negative electrode terminal 42 are connected electrically with an electrode assembly 20, and a pole 44 standing from the proximal part 43. An external thread 44a over which a nut 55 is screwed is formed in the pole 44. An insulation member 50 has a lid side insulation plate 51 placed between the inner surface 14a of the lid 14, and the lid side end face 43a of the proximal part 43, and an insertion part 51a, into which the pole 44 is inserted, is formed in the lid side insulation plate 51. In the side face 43c of the proximal part 43, an engaging recess 43f is formed, and an engaging protrusion 52a engaging with the engaging recess 43f is formed on the insulation member 50. |
