WIRELESS POWER TRANSMISSION DEVICE USING MULTIPLE ANTENNA AND CONTROL METHOD THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a wireless power transmission device using a multiple antenna capable of optimizing power transmission efficiency for a variety of charging target devices, and a control method thereof.

SOLUTION: A wireless power transmission device comprises: at least one or more electric power transmission antennas which transmits a wireless power signal in a magnetic resonance method using a resonance frequency and each of which has a different bandwidth of a resonance frequency; a wireless power signal generation module which generates a wireless power signal; at least one or more wireless power conversion modules which converts a power level of the wireless power signal generated from a wireless power signal generation module and each of which has a different power level conversion width corresponding to the bandwidth of the resonance frequency of the electric power transmission antennas; a multiplexer matching module which selectively connects electric power transmission antennas corresponding to the wireless power conversion module; and a control part which adjusts a power level of the wireless power signal by selectively connecting the electric power transmission antennas and the wireless power conversion module according to a required power amount of the charging target device.

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