CYLINDRICAL ALKALINE BATTERY

摘要

PROBLEM TO BE SOLVED: To efficiently suppress a liquid leakage at a center boss portion of a resin-made gasket and enhance a liquid leakage resistance in a cylindrical alkaline battery having a structure in which a negative electrode current collector passes through the boss portion of the gasket. SOLUTION: The battery is structured to make an uneven distribution state in which the stress operating between the center boss portion 34 of a gasket 33 and a negative electrode current collector 31 passing through the boss portion 34 becomes weak at the end portion on a power generation element 20 of the boss portion 34 and becomes stronger at an intermediate portion side which entered into a negative electrode terminal 32 side than at the end portion. COPYRIGHT: (C)2005,JPO&NCIPI