| 摘要 |
The disclosed lithium ion secondary battery (10) is provided with: a pole plate group (30) that comprises a positive plate (14), a negative plate (18) and a separator (15) and is rolled into a flat shape; and porous elastic members (21) that are incorporated into the corner (31) of the pole plate group (30) in the rolling direction at positions inside the outermost peripheral section of the pole plate group (30). The elastic members (21) are configured from a foam formed from at least one material selected from a group consisting of polyethylene, polypropylene and polyurethane. |
