| 摘要 |
A secondary battery according to one embodiment includes, an electrode group (11) which is a cathode and an anode wound with a separator being interposed therebetween, a first lead (16, 17) having a first welding surface, a second lead (16, 17) having a second welding surface which is bent with respect to a winding axial direction of the electrode group, a first current collecting tab (12,13) which is extended from one end of the electrode group on the winding axial direction, and welded onto the first welding surface of the first lead, a second current collecting tab (12,13) which is extended from the other end of the electrode group on the winding axial direction, and welded onto the second welding surface of the second lead, a first terminal (14, 15) connected to the first lead, and a second terminal (14, 15) connected to the second lead. |
