| 摘要 |
PROBLEM TO BE SOLVED: To provide a power storage device capable of appropriately isolating a tab group and a case from each other.SOLUTION: A secondary battery 2 includes: an electrode assembly 5 of a lamination structure in which a positive electrode and a negative electrode are laminated insulating between them. A positive electrode tab group 21 comprises: a first bent portion 27 which is a shape bent to one direction; an extending portion 28 which is extended from the first bent portion 27 to a lamination direction L; and a junction portion W which is connected with a positive electrode conductive member 23. The secondary battery 2 includes an insulation sheet 9b which is a shape for covering surrounding of the electrode assembly 5 and is installed between the electrode assembly 5 and a case 3; and a clearance sheet 31 which is installed between the electrode assembly 5 and the insulation sheet 9b. The clearance sheet 31 (specified sheet 32) is extended in the same side of the positive electrode tab group 21 so as to cover the tip side portion of the positive electrode tab group 21 in comparison with the junction portion W thereof. |
