Patent ID: 9176551
Filing Date: 2015-11-03
Classification: G06F,H02J,H04B

Abstract:
1. A wireless power transmission apparatus, comprising: a switching block having a plurality of switches, receiving distributed power signals, and delivering the power signals as periodical preamble signals that make a detour around a power amplification and transmission block or delivering the power signals to the power amplification and transmission block in accordance with switching under control; the power amplification and transmission block amplifying the power signals received through the switching block on respective paths and transmitting the amplified power signals to a coil array block; a sensing block detecting the preamble signals on the respective paths that make a detour around the power amplification and transmission block and are delivered to the coil array block, and sensing changes in the preamble signals according to whether wireless power receiving apparatuses receiving a wireless power from the coil array block appear; and a power distribution and control block controlling the preamble signals to be periodically transmitted to the respective paths through the switching block, and controlling the switching block, on the paths where the wireless power receiving apparatuses appear, according to sensing results received from the sensing block to transmit the power signals to the power amplification and transmission block.