Storage battery deterioration tendency estimation system and storage battery deterioration tendency estimation program

摘要

PPROBLEM TO BE SOLVED: To appropriately estimate the tendency of the deterioration of a storage battery. PSOLUTION: A system for estimating the tendency of the deterioration of the storage battery comprises an electric discharge characteristic database 4 for storing initial discharge characteristics at a specific discharge current value, a secular change database 5 for storing the tendency of secular changes in the discharge capacity at some discharge current value of the storage battery, and a program 6 for estimating the tendency of the deterioration of the storage battery. The program 6 for estimating the tendency of the deterioration of the storage battery computes initial discharge characteristics to an inputted actual discharge current value on the basis of initial discharge characteristics stored in the electric discharge characteristic database 4, computes discharge characteristics after the passage of time on the basis of an inputted actual discharge time, an actual discharge voltage, and computed initial discharge characteristics in the case that a measured actual discharge voltage is equal to a prescribed voltage or lower, acquires a discharge capacity to a secular value from the secular change database 5 in the case that the measured actual discharge voltage is higher than the prescribed voltage, and computes the discharge characteristics after the passage of time on the basis of the discharge capacity, the actual discharge current value, and the computed initial discharge characteristics. PCOPYRIGHT: (C)2011,JPO&INPIT