METHOD FOR REDUCING SHORT-CIRCUIT FAILURE RATE OF ALKALINE STORAGE BATTERY

PROBLEM TO BE SOLVED: To prevent short-circuit failures by performing pulse discharge between positive and negative electrodes, in a state in which an electrode group consisting of the positive and negative electrodes laminated is inserted into a battery jar via a separator. SOLUTION: Pulse discharge is preferably performed at least once under a condition of 100 to 1,000 V discharge voltage, 1 to 20A discharge current, and 50 to 500 microseconds pulse width. A pulse generating circuit 1, in which a battery jar into which an electrode group is inserted as a load 2, is actuated, and pulse discharge is generated between the positive and negative electrodes. With this pulse discharge, burring or the like in contact with a opposite electrode by breaking a separator is thermally fused, and a short-circuit state is eliminated. Burring or the like which is not in contact therewith but protruded with a very narrow interval with the opposite electrode is fused thermally, a distance between both electrodes is widened, and dielectric voltage between both of these electrodes is increased. Thus, by performing pulse electric discharge, burring which causes short-circuit during actual operation is fused thermally, and becomes a conforming electrode group free of short-circuit.