| 摘要 |
PROBLEM TO BE SOLVED: To suppress, while performing aging, the melting and deposition of a cathode active material which occurs during manufacture of a nonaqueous electrolyte secondary battery.SOLUTION: A method of the present invention for manufacturing a nonaqueous electrolyte secondary battery comprises a lamination step, a winding step, an assembly step, and an aging step. In the lamination step, a cathode 1 is provided with a cathode collector 7 and cathode mixture layers 3 and 5 positioned on both sides of the cathode collector 7, and an anode 2 is provided with an anode collector 8, anode mixture layers 4 and 6 positioned on both sides of the anode collector 8, and an anode end face 22 in which an end face of the anode collector 8 and end faces of the anode mixture layers 4 and 6 are substantially flush with each other. In the winding step, the laminate is wound in a manner that the anode mixture layer 4 on the outer circumferential side does not face the cathode mixture layers 3 and 5 on the outermost circumference of the anode positioned on the outer circumferential side of the outermost circumference of the cathode. In the aging step, the laminate is held in place while kept in storage by covering at least part of a side end portion of the cathode mixture layer 5 facing the anode mixture layer 6 in proximity to the anode end face 22 with a nonaqueous electrolyte. |
