Patent ID: 8179101
Filing Date: 2012-05-15
Classification: H02J

Abstract:
1. A charging apparatus comprising: a power supply circuit for converting alternating current input into direct current output; a secondary battery including a plurality of batteries connected in series, the secondary battery being charged by an output voltage of the power supply circuit; a charging control circuit that controls charging in a constant-current charging mode for charging the secondary battery with a constant current and, when a terminal voltage of the secondary battery reaches a predetermined voltage, switches the charging in the constant-current charging mode to charging in a constant-voltage charging mode for charging the secondary battery to a constant voltage; and a plurality of voltage control circuits, each adjusting a voltage of each of the plurality of batteries to a set voltage; wherein the plurality of voltage control circuits respectively detect rises in voltages of the plurality of batteries, and one of the voltage control circuits, first detecting attainment of the set voltage, performs subsequent voltage control.