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公开(公告)号：US20250096845A1
公开(公告)日：2025-03-20
申请号：US18889309
申请日：2024-09-18
Inventor： Kye Seok YOON , In Kui CHO , Jung Hoon OH , Jang Yeol KIM , Hyun Joon LEE
Abstract: A system for performing magnetic field communication is disclosed. According to one embodiment of the present disclosure, a system for performing magnetic field communication may include a first current mode power supply having a voltage and one or more inductors connected thereto; a power amplifier connected to the first current mode power supply; a first matching impedance unit including a first capacitor connected to the power amplifier; and a first magnetic field antenna including a coil and a resistor connected in parallel with the first matching impedance unit.
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公开(公告)号：US20240421637A1
公开(公告)日：2024-12-19
申请号：US18668575
申请日：2024-05-20
Inventor： Seong Min KIM , Gwang Zeen KO , Sang Won KIM , Kye Seok YOON , In Kui CHO
Abstract: The present disclosure relates to a method and apparatus for performing multiple wireless charging. A method or performing wireless charging according to an embodiment of the present disclosure may comprise: identifying one or more receiving coils subject to wireless charging; setting a plurality of transmission frequencies based on a plurality of receiving coils being identified; and transmitting a wireless power transmission signal to the plurality of receiving coils using a plurality of transmitting coils connected to one inverter. Herein, a wireless power transmission signal transmitted from each transmitting coil belonging to the plurality of transmitting coils may be generated by applying the plurality of transmission frequencies in a pre-configured order.
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公开(公告)号：US20250141271A1
公开(公告)日：2025-05-01
申请号：US18922921
申请日：2024-10-22
Inventor： Kye Seok YOON , Gwang Zeen KO , Sang Won KIM , Seong Min KIM , In Kui CHO
IPC: H02J50/12 , H02M1/00 , H02M7/48 , H02M7/5381 , H02M7/5387
Abstract: A method and device for controlling a resonant inductor for implementing ZVS in a push-pull parallel resonant inverter is closed. The present disclosure provides A device comprising: a converter including a full-bridge circuit in which a first switch and a second switch form a first leg and a third switch and a fourth switch form a second leg and configured to convert a DC into an AC by turning on or off the switches; a resonant inductor circuit including a resonant inductor and a resonant switch connected in series and connected between two output nodes of the converter; a transmission coil connected in parallel with the resonant inductor circuit; and a controller configured to convert the DC into the AC by providing a switching timing for turning on or off the switches and control a switching timing of the resonant switch based on switching timings of the switches.
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