CHARGING DEVICE

摘要

Discharge at a discharge route circuit is suppressed and an energy efficiency is increase. In a charging device 1 for supplying charge current to a battery (group 24 having plural secondary batteries 22 connected in series to perform charging, a discharge route circuit 34 for discharging charge current Ic to be supplied to the secondary battery 22 when the battery voltage Vb of the secondary battery, 22 exceeds a predetermined voltage during charging is provided every secondary battery 22, and a cut-off circuit 37 for cutting off the discharge route circuit 34 from each secondary battery 22 after charging is completed is provided.