公开(公告)号：US20250007329A1

公开(公告)日：2025-01-02

申请号：US18756613

申请日：2024-06-27

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  INCHEON NATIONAL UNIVERSITY RESEARCH & BUSINESS FOUNDATION

Inventor： Seong Min KIM ,  Saidul Alam Chowdhury ,  Duk Ju Ahn

IPC: H02J50/12

Abstract: A wireless charging reception system and control method capable of adjusting resonance frequency are disclosed. According to an embodiment of the present disclosure, a wireless charging reception system capable of adjusting the resonance frequency may include a resonance circuit unit including a circuit in which a resonance inductor and a resonance capacitor are connected in parallel; a transmission circuit unit including a transmission inductor and a power supply voltage unit adjacent to the resonance inductor within a threshold distance; a switch unit connected in parallel with the resonance circuit unit and including at least one switch; a rectifier circuit connected in parallel with the switch unit and the resonance circuit unit; and a control unit that controls a phase of transmission current flowing through the transmission inductor generated through the power voltage unit to be same as a phase of current associated with the at least one switch.

公开(公告)号：US20230387722A1

公开(公告)日：2023-11-30

申请号：US18095697

申请日：2023-01-11

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sang-Won KIM ,  Gwangzeen KO ,  Seong-Min KIM ,  Jung Ick MOON ,  Je Hoon YUN ,  In Kui CHO ,  Saidul Alam Chowdhury ,  Shahid Ali Khan ,  Duk Ju AHN

IPC: H02J50/12

CPC classification number: H02J50/12

Abstract: Provided is a wireless power reception apparatus. The wireless power reception apparatus includes a resonant circuit including a first path and a second path, the first path including a first capacitor and a first gate connected in series, and the second path being connected in parallel with the first path and including a second capacitor and a second gate connected in series and a reception coil connected to the resonant circuit, configured to wirelessly receive power based on a capacitance of the resonant circuit, and to generate power according to the wirelessly received power, wherein the resonant circuit is configured to determine a gate driving signal to operate the first gate and the second gate and wherein the capacitance of the resonant circuit is determined according to the gate driving signal.