公开(公告)号：US20220069633A1

公开(公告)日：2022-03-03

申请号：US17127419

申请日：2020-12-18

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Yong Seok LIM ,  Hae Yong JUNG ,  Tai Gil KWON ,  Yong Seong KIM ,  Yongju PARK

IPC: H02J50/60 ,  B60L53/55 ,  B60L53/30 ,  H02J50/40 ,  H02J50/12

Abstract: The present invention provides a system for wireless power transmission, wherein the system is a system for wireless power transmission detecting a foreign object, including a power transmitting coil for transmitting AC power, a power receiving coil for receiving the AC power transmitted from the power transmitting coil wherein the power receiving coil is spaced apart from the power transmitting coil, and a detection circuit for detecting a foreign object located between the power transmitting coil and the power receiving coil wherein a first resistor and a first detection coil connected in series, and a second resistor and a second detection coil connected in series are connected in parallel, and wherein at least one of the first detection coil and the second detection coil is disposed between the power transmitting coil and the power receiving coil.