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1.发明公开公开(公告)号：US20240322601A1
公开(公告)日：2024-09-26
申请号：US18611412
申请日：2024-03-20
Inventor： Gwangzeen KO , Sang-Won KIM , Seong-Min KIM , Jung Ick MOON , In Kui CHO
Abstract: A wireless power transmitter that changes an operation frequency and an operation method of the same are provided. The operation method includes controlling the wireless power transmitter to operate at a first operation frequency included in an operation frequency set, changing an operation frequency of the wireless power transmitter from the first operation frequency to a second operation frequency that is different from an operation frequency of a second wireless power transmitter that is adjacent to the wireless power transmitter for every channel duration, and controlling the wireless power transmitter to operate at the second operation frequency.
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公开(公告)号：US20230387722A1
公开(公告)日：2023-11-30
申请号：US18095697
申请日：2023-01-11
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.
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公开(公告)号：US20230317356A1
公开(公告)日：2023-10-05
申请号：US18078577
申请日：2022-12-09
Inventor： Jung Ick MOON , Gwangzeen KO , Sang-Won KIM , Seong-Min KIM , In Kui CHO
CPC classification number: H01F27/2823 , H02J50/10 , H02J50/005 , H01F27/06
Abstract: Provided is a spiral coil and wireless power transmission and reception circuit including the spiral coil. The spiral coil includes a conducting wire forming one or more coil turns, and a height of one side of the conducting wire in a direction of a central portion of the spiral coil and a height of another side of the conducting wire in an opposite direction to the central portion of the spiral coil in each of the coil turns are different from each other and the conducting wire includes at least one slot formed by an empty space between the one side and the other side, and an upper surface positioned above the one side and the other side and connecting the one side and the other side.
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公开(公告)号：US20210249179A1
公开(公告)日：2021-08-12
申请号：US17054267
申请日：2019-05-10
Inventor： Jung Ick MOON , In Kui CHO , Sang-Won KIM , Seong-Min KIM , Ho Jin LEE , Je Hoon YUN , Dong Won JANG
IPC: H01F27/28
Abstract: A low-loss spiral coil includes a conducting wire wound N turns of which a width of each of wires corresponding to each of sections of the conducting wire is determined by setting an entire width of the conducting wire to be a width of M sections of the conducting wire, and then determining the width of each of the wires such that a resistance of the spiral coil formed based on the width of the M sections is minimized.
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公开(公告)号：US20190131823A1
公开(公告)日：2019-05-02
申请号：US15986463
申请日：2018-05-22
Inventor： Dukju AHN , Sang-Won KIM , Seong-Min KIM , Jung Ick MOON , In Kui CHO
Abstract: Disclosed is a wireless power receiving apparatus controlling an output voltage. The wireless power receiving apparatus may include a first rectifier to which a first coil receiving power from a wireless power transmitting apparatus and a first capacitor are connected, a second rectifier to which a second coil receiving power from the wireless power transmitting apparatus and a second capacitor are connected, a first switch connected to one end of the first rectifier, and a second switch and a third switch connected to both ends of the second rectifier, in which the first rectifier and the second rectifier are connected in parallel, and an operation mode of the wireless power receiving apparatus may be determined based on whether the first switch, the second switch, and the third switch are turned on or off.
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Patent Agency Ranking
公开(公告)号：US20220352758A1
公开(公告)日：2022-11-03
申请号：US17581284
申请日：2022-01-21
Inventor： Sang-Won KIM , Gwangzeen KO , Seong-Min KIM , Jung Ick MOON
Abstract: An apparatus and method for wirelessly transmitting power and an apparatus and method for wirelessly receiving power are provided. A wireless power reception apparatus may include a reception circuit that is configured to wirelessly receive power having an extended frequency band and that includes a matching inductor with an adjusted inductance and a matching capacitor with an adjusted capacitance, and a processor configured to determine reception parameters related to a resonant frequency of the reception circuit based on transmission parameters and control the inductance and the capacitance based on the reception parameters, and the transmission parameters may be related to a variation in a transmission frequency at which the power is wirelessly transmitted.
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公开(公告)号：US20210351630A1
公开(公告)日：2021-11-11
申请号：US17246244
申请日：2021-04-30
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
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.
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公开(公告)号：US20190140482A1
公开(公告)日：2019-05-09
申请号：US15911264
申请日：2018-03-05
Inventor： Jung Ick MOON , Sang-Won KIM , Seong-Min KIM , In Kui CHO , Je Hoon YUN , Dong Won JANG
Abstract: Provided is a wireless power reception apparatus for wirelessly receiving power from a wireless power transmission apparatus, the wireless power reception apparatus including a reception coil configured to receive power by a harmonic with an n*f0 frequency that is generated through electromagnetic induction with the wireless power transmission apparatus; a matching circuit configured to transfer the harmonic with the n*f0 frequency to a harmonic generator; the harmonic generator configured to generate at least one harmonic with an m*n*f0 frequency by applying a multiplication factor m to the transferred harmonic with the n*f0 frequency; a filter configured to filter the harmonic with the m*n*f0 frequency; and a harmonic transmission coil configured to transmit the filtered harmonic with the m*n*f0 frequency to the wireless power transmission apparatus, and to attenuate the harmonic with the n*f0 frequency that is generated from the wireless power transmission apparatus.
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公开(公告)号：US20240213814A1
公开(公告)日：2024-06-27
申请号：US18489536
申请日：2023-10-18
Inventor： Jung Ick MOON , Gwangzeen KO , Sang-Won KIM , Seong-Min KIM , In Kui CHO
CPC classification number: H02J50/60 , H02J50/10 , H02J50/402
Abstract: A wireless charging system, a method of removing a foreign object in the wireless charging system, and a computing device performing the method are provided. The wireless charging system includes a transmission coil cover mounted to surround a transmission coil of a transmission device, a reception coil cover mounted to surround a reception coil of a reception device, and a direct current (DC) conducting wire attached to each of the transmission coil cover and the reception coil cover, wherein the wireless charging system may be configured to remove a foreign object attached to the transmission coil cover or the reception coil cover by using a force acting on the DC conducting wire according to a direction of a current flowing in the DC conducting wire and a direction of a magnetic field perpendicular to the direction of the current.
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10.发明公开公开(公告)号：US20230290563A1
公开(公告)日：2023-09-14
申请号：US18200759
申请日：2023-05-23
Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , Korea Advanced Institute of Science and Technology
Inventor： Jang Yeol KIM , In Kui CHO , HYUNJOON LEE , Sang-Won KIM , Seong-Min KIM , Jung Ick MOON , Woo Cheon PARK , Je Hoon YUN , Jaewoo LEE , Ho Jin LEE , Dong Won JANG , Kibeom KIM , Seungyoung AHN
CPC classification number: H01F27/325 , G01R33/02 , H01F27/24 , H01F27/2804 , H01F41/041
Abstract: A radio frequency (RF) weak magnetic field detection sensor includes a ferromagnetic core, a pickup coil disposed to surround the ferromagnetic core, a substrate that includes an opening, a core pad connected to the ferromagnetic core and a coil pad connected to the pickup coil, and an insulating tube interposed between the ferromagnetic core and the pickup coil. The insulating tube includes a bobbin around which the pickup coil is wound, and a core hole formed to pass through the bobbin and configured to accommodate the ferromagnetic core.
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