Patent ID: 6551737
Filing Date: 2003-04-22
Classification: H01M,Y02E,Y02P,Y10T

Abstract:
A cylindrical alkaline storage battery including a cell casing formed to store an amount of electrolyte comprised of an aqueous alkaline solution, and a group of spiral electrodes contained in the cell casing, the group of spiral electrodes being composed of positive and negative electrode plates spirally wound with a separator interposed therebetween in such a manner that the negative electrode plate is placed at an outermost periphery of the group of spiral electrodes, wherein a winding terminal end of the positive electrode plate is positioned in a maximum interior diameter portion of the group of spiral electrodes, and wherein the separator is partly reinforced by an additional separator of the same kind of material as that of the separator adhered thereto at an outside of the winding terminal end of the positive electrode plate.