| 摘要 |
PROBLEM TO BE SOLVED: To improve rigidity of a power storage device while restraining deterioration of productivity of the power storage device.SOLUTION: A secondary battery 10 is formed such that a layered electrode assembly 11 formed by laminating a positive electrode 12, a negative electrode 16 and a separator 20 insulating them is housed in a case 21. The case 21 is a square-shaped case on the bottom wall of which four side walls 22b, 22c, 22d, 22e stand. The power storage device comprises plate-like reinforcing members 30 covering side walls 22b, 22d along a lamination direction of the electrode assembly 11, and restraining members 31 for restraining movement of the reinforcing members 30 in a direction for approaching the electrode assembly 11 from the side walls 22b, 22d. |
