Patent ID: 9669722
Date: 2017-06-06
CPC Classifications: B60L,H02J,H04B,Y02E,Y02T,Y04S

Claim:
1. A power supply device, comprising: a switching unit configured to turn on/off an electric power supplied to a device through a power supply line to charge a battery of the device; a reader/writer unit configured to read a device ID from a storage unit included in the device and write information in the storage unit of the device, wherein the storage unit is driven by an electronic power generated by load modulation based on a high frequency signal through the power supply line; and a control unit configured to turn on the switching unit and supply the electric power to the device through the power supply line based on information that has been written in the storage unit of the device by the reader/writer unit or based on information in the storage unit of the device that has been read by the reader/writer unit and written in an external storage.