Power charging device and mobile terminal apparatus

摘要

A charging device that includes a first battery charged at a first rate and a second battery that is charged at a second rate, which is faster than the first rate. The charging device includes an interface that receives electric power from a charger; a first switch disposed between the interface and the first battery; a second switch disposed between the second battery and the first battery; a battery voltage detection circuit that detects a voltage of the second battery; a charger detection circuit connected to the interface that detects whether power is being received from the charger; and a switch control circuit that controls the first switch and the second switch based on outputs of the charger detection circuit and the battery voltage detection circuit.

主权项

1. A charging device that is selectively connected to one of a first battery that is charged at a first rate and a second battery that is charged at a second rate, which is faster than the first rate, the charging device comprising:
an interface that receives electric power from a charger; a connector that is selectively connected to the first battery or the second battery; a battery identification circuit that determines whether the first or second battery is connected to the connector; and a current limiting circuit disposed between the interface and the connector and that limits a current of power received from the charger to a predetermined value when the battery identification circuit determines that the first battery is connected to the connector, wherein the interface is a non-contact charge power unit and the charger is a non-contact charge power transmitter, and the non-contact charge power unit transmits data controlling a level of power transmitted by the non-contact charge power transmitter based on the determination by the battery identification circuit.