| 摘要 |
PROBLEM TO BE SOLVED: To easily make a battery capacity remarkably large. SOLUTION: In the nonaqueous electrolytic solution square-type secondary battery 10, a negative electrode reed 19 welded to the negative electrode 14 is arranged at a narrow width side face 26 of an electrode body of a flat-wound electrode body 18, and the negative electrode reed 19 is welded to the narrow width side face 27 of a negative electrode can 11 to oppose to the narrow width side face 26 of the electrode body, thereby winding number of the flat-wound electrode body 18 can be increased easily so that a gap generated between the broad width side face 28 of the electrode body and the broad width side face 29 of the negative electrode is eliminated, thus the battery capacity can be easily made remarkably large. |
