公开(公告)号：US10826328B2

公开(公告)日：2020-11-03

申请号：US16163359

申请日：2018-10-17

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sang Han Lee ,  In Kui Cho ,  Sang-Won Kim ,  Seong-Min Kim ,  Jung Ick Moon ,  Ho Jin Lee

IPC: H02J50/12 ,  H02J50/80 ,  H02J5/00

Abstract: A receiver of a wireless power transmission system may include a capacitor-and-inductor configured to receive power from a transmitter using a resonance, at least one capacitor configured to connect to an output node of the receiver, and a plurality of switches configured to control current flow within the receiver. The plurality of switches may be controlled so that the capacitor-and-inductor may be disconnected from the at least one capacitor and the output node at preset periods. Current resonating in the capacitor-and-inductor may increase during disconnection between the at least one capacitor and the output node. The plurality of switches may output the increased current to the battery by connecting the capacitor-and-inductor to the capacitor and the output node after the period, connect at least one capacitor and the output node in series after the period, and operate to reduce root mean square (RMS) current within the receiver.