STORAGE BATTERY CONDITION MEASURING DEVICE, STORAGE BATTERY DEGRADATION DETERMINATION METHOD, STORAGE BATTERY DEGRADATION DETERMINATION PROGRAM

摘要

PROBLEM TO BE SOLVED: To shorten the interval necessary to determine the degradation of the storage battery while keeping the determination precision of the degradation of the battery. SOLUTION: The internal resistance measuring means 12 measures the internal resistance of the storage battery 3 before and after the discharge, the internal resistance reduction rate calculation means 14 calculates the reduction rate of the internal resistance of the storage battery 3 at the before and after the discharge, the degradation condition determination means 15 determines the degradation condition of the storage battery 3 based on the reduction rate of the internal resistance of the storage battery 3 calculated by the internal resistance reduction rate calculation means 14. COPYRIGHT: (C)2008,JPO&INPIT