| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power supply device for an electric vehicle and a method for calculating a capacitor capacitance of the power supply device for the electric vehicle, capable of calculating the capacitor capacitance without adding articles newly. <P>SOLUTION: The power supply device for the electric vehicle is provided with a contactor 2, a filter capacitor 9, an initial charging circuit 3 having a charge resistor 3a, a first voltage detector 10, a second voltage detector 11, and a controller 20. The controller 20 can calculate the capacity of the filter capacitor 9, based on resistance information indicating a resistance value of the charge resistor 3a, first voltage information indicating the voltage of a wire 1 detected by the first voltage detector 10, and second voltage information indicating the voltage of the filter capacitor 9 detected by the second voltage detector 11. <P>COPYRIGHT: (C)2012,JPO&INPIT |
