| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a power storage device capable of improving a safety of a safety measure electrode unit.SOLUTION: A secondary battery 10 comprises: a case 12; an electrode assembly 20 housed in the case 12; a pair of conductive members 40A, 40B consisting of a positive electrode conductive member 40A electrically connected to a positive electrode 22A of the electrode assembly 20 and a negative electrode conductive member 40B electrically connected to a negative electrode 22B of the electrode assembly 20; and a safety measure electrode unit 30 stacked outside of the electrode assembly 20 and positioned between the electrode assembly 20 and the case 12. The safety measure electrode unit 30 has a first metal foil 32A welded to the positive electrode conductive member 40A; a second metal foil 32B welded to the negative electrode conductive member 40B; and an insulation layer 34 arranged between the first metal foil 32A and the second metal foil 32B, and at least one of the first metal foil 32A and the second metal foil 32B is a laminated metal foil in which a plurality of metal foils are laminated.</p> |
