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公开(公告)号：US11502555B2
公开(公告)日：2022-11-15
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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22.发明授权公开(公告)号：US10826328B2
公开(公告)日：2020-11-03
申请号：US16163359
申请日：2018-10-17
Inventor： Sang Han Lee , In Kui Cho , Sang-Won Kim , Seong-Min Kim , Jung Ick Moon , Ho Jin Lee
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.
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公开(公告)号：US20190058349A1
公开(公告)日：2019-02-21
申请号：US15909302
申请日：2018-03-01
Inventor： Sang-Won Kim , Jung Ick Moon , Seong-Min Kim , In Kui Cho , Je Hoon Yun , Dong Won Jang
Abstract: Disclosed is a wireless power transmitting device and method, the wireless power transmitting device including, in response to detection of a power receiver within a predetermined separation distance from a charging pad, a controller configured to generate a magnetic field through a transmission coil with a multilayer structure in which a plurality of coil layers of different sizes are stacked, and a power transmitter configured to wirelessly transmit, to a reception coil of the power receiver, a power signal generated using magnetic fields generated by the plurality of coil layers.
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公开(公告)号：US09837830B2
公开(公告)日：2017-12-05
申请号：US14696562
申请日：2015-04-27
Inventor： Je Hoon Yun , Seong Min Kim , Jung Ick Moon , In Kui Cho
CPC classification number: H02J5/005 , H01F38/14 , H02J7/025 , H02J50/10 , H02J50/12 , H02J50/40 , H02J50/60 , H02J50/80 , H02J50/90
Abstract: Provided are wireless power transmitting method and apparatus using dual-loop in-phase feeding. The wireless power transmitting apparatus includes a generator configured to generate a Radio Frequency (RF) signal, an amplifier configured to amplify the generated RF signal, a matching circuit configured to be connected to the amplifier to perform impedance matching, a first resonator configured to comprise a first feeding loop connected to the matching circuit and transmit wireless power using a signal provided through the first feeding loop, and a second resonator configured to comprise a second feeding loop connected to the matching circuit and transmit wireless power using a signal provided through the second feeding loop, wherein the first and second feeding loops are formed in a manner that allows magnetic fields respectively generated by the first and second resonators to be excited in the same direction and in phase.
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公开(公告)号：US09293943B2
公开(公告)日：2016-03-22
申请号：US13953992
申请日：2013-07-30
Inventor： Seong Min Kim , In Kui Cho , Je Hoon Yun , Jung Ick Moon , Sang Hoon Cheon
Abstract: Provided is a battery charging method using wireless power transmission, the method including: receiving a first message associated with a battery charge start from a reception apparatus; discovering an optimal frequency band for a transmit power signal to be transmitted to the reception apparatus based on the first message; receiving, from the reception apparatus, a second message that includes an extra power value and a charge power value, and is associated with a charge state of the reception apparatus; and adaptively controlling transmit power so that the extra power value is maintained to be constant in proportion to a relationship between the charge power value and a first parameter, based on the second message.
Abstract translation: 提供一种使用无线电力传输的电池充电方法，所述方法包括：从接收装置接收与电池充电开始相关联的第一消息; 基于所述第一消息发现要发送到所述接收装置的发射功率信号的最佳频带; 从接收装置接收包括额外功率值和充电功率值的第二消息，并与接收装置的充电状态相关联; 以及基于所述第二消息，自适应地控制发射功率，使得所述额外功率值被保持为与所述充电功率值和第一参数之间的关系成比例的常数。
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Patent Agency Ranking
公开(公告)号：US09246359B2
公开(公告)日：2016-01-26
申请号：US13773873
申请日：2013-02-22
Inventor： Jung Ick Moon , In Kui Cho , Seong-Min Kim , Je Hoon Yun , Woo Jin Byun
CPC classification number: H02J50/00 , H02J17/00 , H02J50/12 , H04B5/0037 , H04B5/0087
Abstract: Disclosed is an apparatus for harvesting leakage energy. The apparatus for harvesting leakage energy includes: an energy harvesting unit configured to harvest energy leaked while energy radiated from a transmitting unit of an energy transmitting apparatus is transmitted to a receiving unit of an energy receiving apparatus; and a harvesting circuit module configured to supply energy harvested by the energy harvesting unit to a load. In accordance with the embodiment of the present invention, energy efficiency of overall system can be increased by harvesting the leakage energy without affecting performance of a wireless power transmission system.
Abstract translation: 公开了一种用于收获泄漏能量的装置。 用于收集泄漏能量的装置包括：能量收集单元，被配置为收集从能量发射装置的发射单元辐射的能量被发射到能量接收装置的接收单元的泄露的能量; 以及收集电路模块，其被配置为将能量收集单元收集的能量提供给负载。 根据本发明的实施例，可以通过收集泄漏能量而不影响无线电力传输系统的性能来提高整个系统的能量效率。
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公开(公告)号：US11916309B2
公开(公告)日：2024-02-27
申请号：US17122218
申请日：2020-12-15
Inventor： Jaewoo Lee , In Kui Cho , Sang-Won Kim , Seong-Min Kim , Ho Jin Lee , Jang Yeol Kim , Jung Ick Moon , Woo Cheon Park , Je Hoon Yun , Hyunjoon Lee , Dong Won Jang
CPC classification number: H01Q7/005 , G01R33/3692 , H04B5/0025 , H01Q1/243
Abstract: An apparatus and method for transmitting and receiving magnetic field signals in a magnetic field communication system are provided. The apparatus includes a controller configured to generate a communication signal, matching units that are configured to receive the communication signal and that respectively correspond to different matching frequencies, and loop antennas that are connected to the matching units, respectively, and that are configured to convert communication signals according to the different matching frequencies into magnetic transmission signals in the form of magnetic field energy and to transmit the magnetic transmission signals.
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公开(公告)号：US11750246B2
公开(公告)日：2023-09-05
申请号：US17553466
申请日：2021-12-16
Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , Korea Advanced Institute of Science and Technology
Inventor： Jang Yeol Kim , Jaewoo Lee , Hyunjoon Lee , In Kui Cho , Sang-Won Kim , Seong-Min Kim , Jung Ick Moon , Je Hoon Yun , Dong Won Jang , Seunghun Ryu , Seungyoung Ahn
IPC: H04B5/00 , H03K9/00 , H03D3/24 , G01R33/00 , G01R33/028
CPC classification number: H04B5/0075
Abstract: A magnetic field communication method and apparatus using a giant magnetoimpedance (GMI) magnetometer are disclosed. The magnetic field communication apparatus includes a GMI magnetometer configured to detect a first communication signal based on a received magnetic field signal, a first signal extractor configured to extract a second communication signal comprising a message signal from the first communication signal, a second signal extractor configured to extract a third communication signal by removing a magnetization frequency signal from the second communication signal, and a third signal extractor configured to extract the message signal by removing a carrier wave frequency signal from the third communication signal.
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公开(公告)号：US11509170B2
公开(公告)日：2022-11-22
申请号：US16629010
申请日：2018-07-05
Inventor： In Kui Cho , Sang-Won Kim , Seong-Min Kim , Jung Ick Moon , Je Hoon Yun , Ho Jin Lee , Dong Won Jang
Abstract: A wireless power receiving apparatus, according to an example embodiment, may include a receiving coil in which a first wire including a copper core and a second wire not including a copper core are wound around a same axis. The second wire may be located at a pitch of the first wire, and a diameter of the second wire may correspond to the pitch of the first wire.
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公开(公告)号：US10727698B2
公开(公告)日：2020-07-28
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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