| 摘要 |
PROBLEM TO BE SOLVED: To prevent the formation of a gap between an insulation film and a battery case at an end part of the outer peripheral surface of the battery case.SOLUTION: A battery has an insulation film 3 provided so as to coat the outer peripheral surfaces 2b-2e of a battery case 2, and the insulation film 3 is protruded from the outer peripheral surfaces 2b-2e, without covering surfaces other than the outer peripheral surfaces 2b-2e of the battery case 2. |
