Patent ID: 9104129
Filing Date: 2015-08-11
Classification: G03G,H02J

Abstract:
1. A charging device comprising: a plurality of capacitors that are connected in series; a charging unit that charges the capacitors; a plurality of bypass units, each of which respectively connects in parallel to each of the capacitors, wherein each bypass unit causes, when a charged voltage of any of the capacitors has reached a set voltage, a charging current to bypass the capacitor whose charged voltage has reached the set voltage; and a control unit that controls the charging unit to charge the capacitors in such a manner that, when a charging voltage of said any capacitor has reached the set voltage, the control unit causes the charging unit to reduce, by a constant current operation, the charging current that is to be applied to the remaining capacitors from the charging current applied immediately before said any capacitor reaches the set voltage, and if a predetermined set amount of time has elapsed since the charging voltage of said any capacitor has reached the set voltage, and if a charging voltage of any of the remaining capacitors has not reached the set voltage after the predetermined set amount of time has elapsed and a charging current applied to said any of the remaining capacitors is not bypassed by a corresponding bypass unit, the control unit causes the charging unit to increase the charging current that is to be applied to said any of the remaining capacitors from the charging current that is to be applied to said any of the remaining capacitors by the constant current operation during the predetermined set amount of time, wherein the capacitors include electric double layer capacitors or lithium ion capacitors.