| 摘要 |
PROBLEM TO BE SOLVED: To sequentially correct a coarse charging voltage of a capacitor to an appropriate value during operating a charging device or even in the case of fluctuations in a capacitance C or a reactor value L due to the operating ratio of the device. SOLUTION: The voltage control circuit 8 of a DC chopper type quick charging circuit calculates the changes of quick charging voltage by the capacity fluctuations of the capacitor 7 from the measured temperature value of the capacitor itself or the ambient measured temperature value to correct the fluctuations of the calculated capacitance C by control of output current i. This includes application to an LC resonance type quick charging circuit. The changes of the quick charging voltage due to the capacity fluctuations of the capacitor or the reactor value fluctuations of a reactor installed with the quick charging circuit are obtained by an arithmetic operation of which arithmetical elements are temperature, a circuit constant, voltage, current, and an operation period, thereby controlling the output current and the target voltage of the quick charging circuit from the arithmetic result. COPYRIGHT: (C)2008,JPO&INPIT
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