MULTI-NODE WIRELESS POWER TRANSMISSION SYSTEM USING MAGNETIC RESONANCE INDUCTION AND WIRELESS CHARGING DEVICE

摘要

The present invention relates to a multi-node wireless power transmission system using magnetic resonance induction, which can efficiently charge multiple wireless charging devices, and to a wireless charging device, comprising a step of the wireless power transmission device receiving information from multiple wireless charging devices and selecting a target device to be charged based on the information, and a step of turning on/off the power reception function of the wireless charging devices using an adaptive matching network which can control or adjust the matching of a switch that is installed on a power conversion unit in the wireless charging device. As a result, selective charging is possible by controlling the power reception function so as to be turned on/off while maintaining the power in the wireless charging devices that are not the target wireless charging device, and the wireless charging devices waiting to be charged can be used without inconvenience.