公开(公告)号：US11502555B2

公开(公告)日：2022-11-15

申请号：US17246244

申请日：2021-04-30

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sang-Won Kim ,  Ho Jin Lee ,  In Kui Cho ,  Seong-Min Kim ,  Jung Ick Moon ,  Jang Yeol Kim ,  Je Hoon Yun ,  Jaewoo Lee ,  Hyunjoon Lee ,  Dong Won Jang

IPC: H02J50/80 ,  H02J50/10 ,  H02J50/90 ,  H02J50/40

Abstract: A wireless power transmission system and method are disclosed. The wireless power transmission system includes a plurality of wireless power transmitters configured to provide power to a plurality of wireless power receivers, and a controller configured to control the wireless power transmitters based on information of the wireless power receivers. The controller is configured to receive information of a wireless power receiver from the wireless power receiver, calculate a transmission parameter associated with a transmission efficiency of power to be provided to the wireless power receiver using the information of the wireless power receiver, and provide power to the wireless power receiver through the wireless power transmitters based on the transmission parameter.

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.

公开(公告)号：US10082627B2

公开(公告)日：2018-09-25

申请号：US15808640

申请日：2017-11-09

Applicant: Electronics and Telecommunications Research Institute

Inventor： Kyung Hyun Park ,  Il Min Lee ,  Eui Su Lee ,  Ho Jin Lee ,  Sang Pil Han ,  Hyun Soo Kim ,  Ki Won Moon ,  Dong Woo Park

IPC: G02B6/26 ,  G02B27/09

CPC classification number: G02B6/262 ,  G02B6/10 ,  G02B6/24 ,  G02B6/264 ,  G02B27/0927 ,  G02B27/0944

Abstract: An apparatus providing a terahertz (THz) wave may comprise at least one THz wave generator each of which generates a THz wave; at least one first phase adjuster adjusting a phase of the generated THz wave; at least one waveguide part receiving and combining the at least one phase-adjusted THz wave radiated from the at least one first phase adjuster, and guiding the combined THz wave; at least one second phase adjuster adjusting a phase of the combined THz wave from the at least one waveguide part, which is connected to the at least one waveguide part or disposed in a portion of the at least one waveguide part; and an output module outputting the THz wave guided from the at least one waveguide part.