| 摘要 |
An object of this invention is to simultaneously resolve a decline in capacity due to undercharging of, and degradation due to overcharging of, a lead-acid battery, which occur as a result of random charging. A method of controlling a lead-acid battery of this invention is characterized in that a first region extending until an accumulated discharged capacity D1 at which a theoretical discharged capacity is the maximum value Dmax is reached, and a subsequent second region in which the accumulated discharged capacity D1 is exceeded, are set, and in that a value R1 obtained by dividing an accumulated charged capacity C1 by the accumulated discharged capacity D1 in the first region is made to be larger than a value R2 obtained by dividing an accumulated charged capacity C2 by an accumulated discharged capacity D2 in the second region.
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