Patent ID: 11949246
Assignee: LG ELECTRONICS INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A method of operating a wireless power transmission apparatus, the method comprising:
calculating an output level of power transmitted to a wireless power reception apparatus through a transmission coil included in the wireless power transmission apparatus, based on a current flowing through the transmission coil;
determining a load state of the wireless power reception apparatus based on a target level of power transmitted through the transmission coil and the calculated output level;
when the load state of the wireless power reception apparatus changes to a light-load or a no-load state while operating in a full-load state, determining that the load state of the wireless power reception apparatus is abnormal; and
controlling an inverter included in the wireless power transmission apparatus based on the determined load state of the wireless power reception apparatus.