| 摘要 |
PROBLEM TO BE SOLVED: To provide a lithium ion secondary battery capable of suppressing a damage of a tab part.SOLUTION: A lithium ion secondary battery 1 comprises at least a pair of electrodes 30 and 40. The electrode 30 includes: a collector 32, and a tab part 34 projected from the collector 32. A conductive member 60 is connected to the tab part 34. The tab part 34 is formed by a rolled metal foil, and a rolling direction D3 of the metal foil is along with a projection direction D1 of the tab part 34.SELECTED DRAWING: Figure 3 |
