| 摘要 |
PROBLEM TO BE SOLVED: To perform appropriately charging without excess and deficiency regardless of the state before charging of a lead acid storage battery, even in the case the internal resistance and charging efficiency have been changed by repeated charge and discharge of the lead acid storage battery. SOLUTION: This is a charging method which has a charging step of N (N is a natural number of 3 or more) stages and in which the charging current is reduced at each charging step and based on the measurement of the charging electricity amount C<SB>1</SB>and the battery temperature T of a first stage, the charging time t<SB>N</SB>of the Nth stage is determined. When charging with a charging time t<SB>N</SB>of a prescribed value t<SB>c</SB>has been carried out consecutively for a prescribed number of times (r), the charging time t<SB>N</SB>of the Nth charging stage in the next charging is established at least at the prescribed value t<SB>c</SB>or more regardless of the foregoing. COPYRIGHT: (C)2006,JPO&NCIPI |
