POWER SUPPLY DEVICE FOR PORTABLE DEVICE AND CHARGING DEVICE OF THE SAME

摘要

PROBLEM TO BE SOLVED: To achieve downsizing of a portable device 6.SOLUTION: A power supply device 10 for a portable device includes: a secondary battery 3; a circuit board 63; and a power reception module 61. A charging/discharging circuit including a charging circuit for charging a secondary battery 3 by input of external power is mounted on the circuit board 63. The power reception module 61 includes a power reception resonance coil 611, which receives electric power supplied from the exterior by a resonance phenomenon, and a power extraction coil 612 which outputs the electric power to the charging circuit as the external power. At least a part or a whole part of at least one of the circuit board 63 and the secondary battery 3 is disposed at the inner peripheral side of the power reception resonance coil 611 and the power extraction coil 612 in the power reception module 61.