| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a secondary battery reducing a portion where a potential difference occurs between layers of a positive electrode or a negative electrode, in the entire electrode body as possible, thereby uniforming electrode reactions as the entire electrode body. <P>SOLUTION: Layers of a positive electrode 12 forming each of bent parts 21, 22 are electrically connected with each other via each of contact parts 42 of a metal member 40a by bringing the contact parts 42 into contact with each other so that at least two layers of the positive electrode 12 forming each of the bent parts 21, 22 are stepped over, the metal member being bonded to an uncoated part 12b of the positive electrode 12 forming both bent parts 21, 22 at both ends in the winding axial direction of an electrode body 11. <P>COPYRIGHT: (C)2013,JPO&INPIT |
