| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method of a square nonaqueous electrolyte battery capable of increasing winding speed, decreasing the amount of an inner circumferential separator, and reducing the dispersion of positions of a lead for collecting current in the winding of an electrode plate group. SOLUTION: The manufacturing method of the square nonaqueous electrolyte battery is that the electrode plate group is constituted by winding a positive plate and a negative plate to which a lead for collecting current is fit, through a separator by using a winding core, the electrode plate group from which the winding core is removed in an electrode plate winding process, and an electrolyte are housed in a case, a sealing plate is fit to a case opening part, and the case is sealed with the sealing plate, and a portion corresponding to two laps from the innermost lap out of the separator exposed from the electrode plate width of the upper part or the bottom part of the electrode plate group is partially welded during the electrode plate winding process. COPYRIGHT: (C)2007,JPO&INPIT |
