A battery capacity calculation methods includes a reference discharge curve calculation step for obtaining a discharge curve as a reference, a correction voltage calculation step for correcting the battery measurement voltage (V1) by a battery resistance component so as to obtain a corrected voltage (V), and a capacity calculation step for calculating the battery discharge capacity from the discharge curve serving as the reference by using the corrected voltage (V). The capacity calculation step has a deterioration index calculation step for calculating a capacity deterioration index (S) as a capacity reduction ratio attributed to battery deterioration. The discharge capacity calculated from the discharge curve as the reference by using the corrected voltage (V) is further multiplied by the capacity deterioration index (S), thereby calculating a discharge capacity.
申请公布号
WO03096040(A1)
申请公布日期
2003.11.20
申请号
WO2003JP05544
申请日期
2003.04.30
申请人
SONY CORPORATION;YAMAZAKI, KAZUO;HATAZAWA, TSUYONOBU;TOMITA, TAKASHI;IKEDA, TAMON;NAWA, RYUICHI;ISHIKAWA, YUUICHI;HORI, MASANORI