| 摘要 |
PROBLEM TO BE SOLVED: To realize technologies capable of accurately detecting deterioration due to sulfation, and capable of suppressing the deterioration due to sulfation in an optimum state. SOLUTION: In a controller 5, the deterioration due to sulfation is determined on the basis of a charging resistor and temperature of a lead-acid storage battery 1 by calculating the charging resistor RCHG of the lead-acid storage battery on the basis of a voltage of the lead-acid storage battery 1 and an instantaneous current at charging and discharging, and then by calculating the temperature TCHG of the lead-acid storage battery 1, and control for suppressing the deterioration of the lead-acid storage battery 1 due to sulfation is performed on the basis of a determination result of the deterioration due to sulfation. COPYRIGHT: (C)2008,JPO&INPIT
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