METHOD FOR MANUFACTURING ELECTRICITY STORAGE DEVICE

摘要

An electricity storage member in an electricity storage device is manufactured by a step of folding a positive electrode material foil and folding a negative electrode material foil, a step of arranging the positive and negative electrode material foils with a separator foil interposed therebetween, and a step of positioning the positive and negative electrode material foils by relatively moving the positive and negative electrode material foils toward each other so as to insert one end of a second material foil among the positive and negative electrode material foils into a bottom of a valley of the first material foil, and restraining the one end of the second material foil with the bottom of the valley of the first material foil.

主权项

1. A method for manufacturing an electricity storage device including an electricity storage member in which positive electrode foils and negative electrode foils are alternately stacked with separator foils interposed therebetween, comprising:
a positive electrode folding in which a positive electrode material foil having a length equal to a sum of lengths of two of the positive electrode foils is folded in a middle; a negative electrode folding in which a negative electrode material foil having a length equal to a sum of lengths of two of the negative electrode foils is folded in a middle; an initial arranging in which the positive electrode material foil and the negative electrode material foil are arranged with the separator foils interposed therebetween such that an opening of the folded positive electrode material foil faces an opening of the folded negative electrode material foil; and a positioning in which the positive electrode material foil and the negative electrode material foil are positioned by relatively moving the folded positive electrode material foil and the folded negative electrode material foil closer to each other so as to insert one end of a second material foil among the positive and negative electrode material foils from the opening of a first material foil among the positive and negative electrode material foils toward a bottom of a valley of the first material foil, and in which the one end of the second material foil is restrained with the bottom of the valley of the first material foil.