Patent ID: 9431840
Filing Date: 2016-08-30
CPC Classification: H02J,H02M

Claim Text:
1. A charger for charging a voltage battery, the charger comprising: a bidirectional buck boost converter configured to supply power to a first voltage battery or supply power to a second voltage battery from the first voltage battery; a first converter configured to generate charging power by using an AC commercial power supply; a second converter connected to the first converter and the bidirectional buck boost converter and configured to generate charging power in the second voltage battery; and a relay configured to charge the second voltage battery, the relay connected between a node, which is connected to the first converter and the bidirectional buck boost converter, and the second converter, wherein the bidirectional buck boost converter comprises: a connection switch having one electrode connected to the first converter and the second converter; a synchronous switch having one electrode connected to the other electrode of the connection switch; an inductor connected to one electrode of the synchronous switch and the other electrode of the connection switch; and a first capacitor including one electrode connected to one electrode of the inductor and the other electrode connected to the other electrode of the synchronous switch.