| 摘要 |
PROBLEM TO BE SOLVED: To provide a charging device that is capable of achieving reduction in an amount of ripple ascribable to deterioration with time of components or the like and continuing to supply a stabilized DC output voltage to a battery.SOLUTION: A charging device, which includes a control circuit 20 for controlling switch means of a DC/DC converter circuit and charges a battery, further includes: a measurement circuit for measuring an AC current or an AC voltage generated in the DC/DC converter circuit as an AC signal. The control circuit 20 includes: a control amount calculation part 21 for calculating an on/off control amount for the switch means; a storage part 23 in which ideal waveform data of the AC signal is stored; a correction amount determination part 22 for determining, based on a difference between measurement data for one cycle of the AC signal measured by the measurement circuit and the ideal waveform data, a correction amount for each measurement value and storing the correction amount in the storage part 23; and a duty ratio calculation part 24 for calculating a duty ratio by adjusting the on/off control amount using the correction amount stored in the storage part 23. |
