| 摘要 |
PROBLEM TO BE SOLVED: To provide a battery state of charge controller for a vehicle capable of accurately determining a state of charge of a battery on the basis of a current value of charge/discharge current of the battery, even when the battery has been deteriorated.SOLUTION: A battery state of charge controller for a vehicle comprises: a power generator which is driven by an engine and supplies power to an electric apparatus for the vehicle while charging a battery; and a current sensor for detecting a current value of charge/discharge current of the battery. The controller determines that the charge of the battery is completed, when the current value of the battery decreases to equal to or lower than a predetermined charge threshold C1. The controller detects the degree of deterioration of the battery, and corrects the charge threshold depending on the degree of deterioration of the battery so that the charge threshold is lower (C2 and C3) as the degree of deterioration of the battery increases. |
