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公开(公告)号：US20210298136A1
公开(公告)日：2021-09-23
申请号：US17186923
申请日：2021-02-26
Applicant: LG Electronics Inc.
Inventor： Hyunwook MOON , Euisung KIM , Yangkyeong KIM
Abstract: A wireless power transmission apparatus for induction heating includes: a working coil that is configured to change operation based on selection of a mode of operation from among a plurality of operating modes, the plurality of operating modes including a wireless power transmission mode configured to wirelessly transmit power and a heating mode configured to heat one or more objects, an inverter that is configured to output, to the working coil, current at an operation frequency, and a controller. The controller is configured to detect a target object, and determine, in the wireless power transmission mode, whether the target object is (i) a device from among a first group of devices including a device with a reception coil or (ii) an induction heating device.
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公开(公告)号：US20210259059A1
公开(公告)日：2021-08-19
申请号：US17178991
申请日：2021-02-18
Applicant: LG Electronics Inc.
Inventor： Euisung KIM , Jaewoo LEE , Hyunwook Moon
Abstract: A cooking apparatus includes: a working coil, an inverter configured to output a resonant current to the working coil, a current detector configured to detect the resonant current and output a detection value corresponding to the resonant current, and a controller. The controller is configured to control the inverter to flow a first resonant current through the working coil, control the inverter to flow, through the working coil, a second resonant current having a frequency different from the first resonant current, and determine, based on a difference between a first detection value for the first resonant current and a second detection value for the second resonant current, whether a target object that is located adjacent to the working coil is a predetermined object.
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公开(公告)号：US20210274606A1
公开(公告)日：2021-09-02
申请号：US17185638
申请日：2021-02-25
Applicant: LG Electronics Inc.
Inventor： Hojae SEONG , Euisung KIM , Seungbok OK
Abstract: A wireless power transmission apparatus for induction heating includes: a working coil configured to change operation based on selection of a mode of operation from among a plurality of operating modes, the plurality of operating modes including a wireless power transmission mode configured to wirelessly transmit power and a heating mode configured to heat one or more objects, an inverter configured to output, to the working coil, current at an operation frequency, and a controller. The controller is configured to determine, based on the wireless power transmission mode being selected, whether a foreign object is present on the working coil over a plurality of modes in a preparation period prior to performing wireless power transmission (WPT) to a target object.
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公开(公告)号：US20210159730A1
公开(公告)日：2021-05-27
申请号：US17044302
申请日：2019-04-09
Applicant: LG ELECTRONICS INC.
Inventor： Hyunwook MOON , Yangkyeong KIM , Euisung KIM , Hojae SUNG
Abstract: The present disclosure relates to a wireless power reception device and method, and provides a wireless power reception device comprising: a secondary coil which is magnetically coupled to a primary coil disposed in a wireless power transmission device so as to receive wireless power from the wireless power transmission device; a shielding member for supporting the secondary coil; a power pickup unit including a rectifier circuit for rectifying an alternating current signal according to the wireless power received by the secondary coil into a direct current signal; and a communication/control unit for controlling transmission of the wireless power and communicating with the wireless power transmission device. On the basis of a secondary coil and a shielding member according to the present embodiment, slimming of an applied product can be achieved and, simultaneously, the same target performance index (which is required for the standard medium power level (for example, 60 W)) can be implemented.
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公开(公告)号：US20200021114A1
公开(公告)日：2020-01-16
申请号：US16579199
申请日：2019-09-23
Applicant: LG ELECTRONICS INC.
Inventor： Hyeunsik NAM , Euisung KIM , Wonchul CHOI , Hyunwook MOON , Byungkyu PARK
IPC: H02J5/00 , H02J7/02 , H02J7/00 , H01F38/14 , G07F17/32 , G06K9/00 , A47B31/02 , H05B6/12 , H05B6/06 , H02J50/10
Abstract: A smart table is disclosed. The smart table includes a plate, an inverter configured to convert direct current (DC) power into alternative current (AC) power and to supply the AC power, a coil unit disposed below the plate and including a plurality of working coils heated by the AC power, a radio frequency identification (RFID) reader configured to recognize an RFID tag of a home appliance placed on the plate and to receive information on the home appliance from the RFID tag, and a processor configured to drive one or more of the plurality of working coils as wireless power transmission coils to perform control to transmit wireless power to the home appliance based on the received information.
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Patent Agency Ranking
公开(公告)号：US20230261524A1
公开(公告)日：2023-08-17
申请号：US18139806
申请日：2023-04-26
Applicant: LG Electronics Inc.
Inventor： Hyunwook MOON , Euisung KIM , Jaewoo LEE
Abstract: A wireless power transmission apparatus includes: a transmission coil configured to transmit power to a wireless power reception apparatus, an inverter that includes a plurality of switching elements and that is configured to output a current of a predetermined frequency to the transmission coil through an operation of the plurality of switching elements, and a controller. The controller can be configured to calculate an output level of power transmitted through the transmission coil, determine a load state of the wireless power reception apparatus based on a target level of power transmitted through the transmission coil and the calculated output level, and control the inverter based on the determined load state of the wireless power reception apparatus.
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公开(公告)号：US20210274604A1
公开(公告)日：2021-09-02
申请号：US17185626
申请日：2021-02-25
Applicant: LG Electronics Inc.
Inventor： Jaewoo LEE , Euisung KIM , Hojae SEONG
Abstract: A wireless power transmission apparatus for induction heating includes: a working coil configured to change operation based on selection of a mode of operation from among a plurality of operating modes, the plurality of operating modes including a wireless power transmission mode configured to wirelessly transmit power and a heating mode configured to heat one or more objects, an inverter configured to output, to the working coil, current at an operation frequency, and a controller. The controller is configured to calculate an eccentricity degree between the working coil and a reception coil of a target object, and control, in the wireless power transmission mode, the operation frequency based on the calculated eccentricity degree while performing wireless power transmission to the target object.
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公开(公告)号：US20210257858A1
公开(公告)日：2021-08-19
申请号：US17178775
申请日：2021-02-18
Applicant: LG Electronics Inc.
Inventor： Hyunwook MOON , Euisung KIM , Jaewoo LEE
Abstract: A wireless power transmission apparatus includes: a transmission coil configured to transmit power to a wireless power reception apparatus, an inverter that includes a plurality of switching elements and that is configured to output a current of a predetermined frequency to the transmission coil through an operation of the plurality of switching elements, and a controller. The controller can be configured to calculate an output level of power transmitted through the transmission coil, determine a load state of the wireless power reception apparatus based on a target level of power transmitted through the transmission coil and the calculated output level, and control the inverter based on the determined load state of the wireless power reception apparatus.
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公开(公告)号：US20240251484A1
公开(公告)日：2024-07-25
申请号：US18684311
申请日：2021-09-06
Inventor： Kyunghoon JUNG , Euisung KIM , Yangkyeong KIM , Raeyoung KIM
CPC classification number: H05B6/062 , H02M1/08 , H05B6/1209 , H05B6/365 , H02M7/537
Abstract: The present disclosure is to provide an induction heating type cooktop that minimizes negative voltage formation and ringing in an inverter to which a Wide Band Gab (WBG) element is applied, and includes a top glass on which a cooking vessel is placed, and a cooking vessel for heating the cooking vessel. The induction heating type cooktop may include an inverter including a working coil that generates a magnetic field, at least one switching element driven to flow current in the working coil, and a driving part that drives the switching element, and the composite impedance of the driving part can be varied.
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公开(公告)号：US20210274605A1
公开(公告)日：2021-09-02
申请号：US17186747
申请日：2021-02-26
Applicant: LG Electronics Inc.
Inventor： Hyunwook MOON , Euisung KIM , Yangkyeong KIM
Abstract: A wireless power transmission apparatus for induction heating includes: a working coil that is configured to change operation based on selection of a mode of operation from among a plurality of operating modes, the plurality of operating modes including a wireless power transmission mode configured to wirelessly transmit power and a heating mode configured to heat one or more objects, an inverter that is configured to output, to the working coil, current at an operation frequency, and a controller. The controller is configured to calculate an eccentricity degree between the working coil and a reception coil of a target object and control, in the wireless power transmission mode, the operation frequency based on the calculated eccentricity degree in a preparation period prior to wireless power transmission to the target object.
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