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公开(公告)号：US12022596B2
公开(公告)日：2024-06-25
申请号：US16810491
申请日：2020-03-05
Applicant: LG Electronics Inc.
Inventor： Hyunwoo Jun , Wontae Kim , Seongho Son
CPC classification number: H05B6/105 , F24C15/08 , F24C15/34 , H05B6/062 , H05B6/1263 , H05B6/1281 , H05B2206/022 , H05B2213/05
Abstract: An induction heating-type cooktop include a case, a cover plate comprising an upper plate that is coupled to an upper end of the case and that is configured to seat an object to be heated on an upper surface of the upper plate, a working coil disposed in the case and configured to heat the object, a module base that is disposed at a lower surface of the upper plate and that includes a thin layer attached to a surface of the module base, and a thermal insulation material disposed between the module base and the working coil.
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公开(公告)号：US12016104B2
公开(公告)日：2024-06-18
申请号：US17141749
申请日：2021-01-05
Applicant: LG Electronics Inc.
Inventor： Seongho Son , Jaekyung Yang , Hyojin Choi , Yongsoo Lee
Abstract: An induction heat cooking apparatus includes a rectifier configured to convert an AC voltage supplied from a power source into a DC voltage, a battery configured to store power, a switch configured to connect to at least one of the rectifier or the battery, an inverter connected to the switch and configured to receive a first voltage from at least one of the rectifier or the battery and convert the first voltage to a second voltage, and a heating coil configured to receive the second voltage from the inverter and generate magnetic fields in which the heating coil is configured to heat a cooking device based on the generated magnetic fields.
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公开(公告)号：US11950347B2
公开(公告)日：2024-04-02
申请号：US17142819
申请日：2021-01-06
Inventor： Younghwan Kwack , Jaekyung Yang , Seongho Son , Yongsoo Lee , Jeehoon Jung , Hwapyeong Park , Mina Kim
CPC classification number: H05B6/065 , F24C15/106 , H02M3/06 , H02M7/103 , H05B1/0202 , H05B6/062 , H05B6/1236 , Y02B40/00
Abstract: An induction heat cooking apparatus that includes: a rectifier that is configured to convert alternating current (AC) voltage supplied from an external power source into direct current (DC) voltage; an inverter that is configured to generate current based on DC voltage received from the rectifier and provide the current to output nodes; heating coils that are configured to, based on the current generated by the inverter, generate magnetic fields for providing heat; a first capacitive unit that includes one or more resonance capacitors and that is coupled between the output nodes; a second capacitive unit that includes one or more wireless power transfer (WPT) capacitors and that is configured to be coupled between the output nodes; and a mode conversion switch that is configured to couple the second capacitive unit to the first capacitive unit in parallel is disclosed.
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24.发明授权公开(公告)号：US11849525B2
公开(公告)日：2023-12-19
申请号：US17027071
申请日：2020-09-21
Applicant: LG Electronics Inc.
Inventor： Chuhyoung Cho , Seongho Son , Younghwan Kwack , Seonho Jeon , Jongseong Ji
CPC classification number: H05B6/1272 , H05B6/065
Abstract: An induction heating type cooktop includes a case, an upper plate coupled to a top of the case and configured to support an object, a working coil disposed inside the case and configured to heat the object, a thin film arranged at a top surface of the upper plate or a bottom surface of the upper plate, at least one temperature sensor configured to measure a temperature of at least one of components of the induction heating type cooktop, the components including the thin film, and a microcontroller unit (MCU) configured to drive the working coil and to control an output of the working coil based on whether the temperature satisfies at least one condition that is preset for the at least one of the components.
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公开(公告)号：US11570855B2
公开(公告)日：2023-01-31
申请号：US16477753
申请日：2018-01-05
Applicant: LG ELECTRONICS INC.
Inventor： Bong Jin Cho , Jinwook Han , Seongho Son
Abstract: The present invention relates to an induction heating cooker including a synchronization circuit for a plurality of inverters, comprising: a first inverter including a first switching circuit unit for applying a first power source to a first heating coil, and a first control unit for controlling the first switching circuit unit; and a second inverter including a second switching circuit unit for applying a second power source to a second heating coil, and a second control unit for controlling the second switching circuit unit, wherein the first inverter further includes a first insulated signal transfer unit for controlling an operation of the second switching circuit unit, and the first control unit may match an operating frequency of the second switching circuit unit with an operating frequency of the first switching circuit unit by using the first insulated signal transfer unit.
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Patent Agency Ranking
公开(公告)号：US11528782B2
公开(公告)日：2022-12-13
申请号：US16678781
申请日：2019-11-08
Applicant: LG Electronics Inc.
Inventor： Younghwan Kwack , Seongho Son , Jaekyung Yang , Yongsoo Lee
IPC: H05B6/06
Abstract: Described is a method for controlling an induction heating device having one or more working coils and a controller configured to perform pre-testing based on a single pulse. The method includes: selecting a working coil to be tested, performing a detection operation to detect a vessel disposed on the working coil and generate a first output pulse; comparing at least one of: a count of the first output pulse to a predetermined reference count range, or an on-duty time of the first output pulse to a predetermined reference time range; and adjusting, by the controller, a duration of an on-state of the single pulse based on (i) a result of the comparison of the count of the first output pulse to the predetermined reference count range or (ii) a result of the comparison of the on-duty time of the first output pulse to the predetermined reference time range.
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公开(公告)号：US11337279B2
公开(公告)日：2022-05-17
申请号：US16390686
申请日：2019-04-22
Applicant: LG ELECTRONICS INC.
Inventor： Younghwan Kwack , Seongho Son , Jaekyung Yang , Yongsoo Lee
Abstract: A method for sensing a container includes: charging an induction heating circuit; sensing a current applied to the induction heating circuit, converting a current value of the current into a first voltage value; comparing the first voltage value with a resonance reference value; generating a resonance of the current; sensing a resonant current generated in the induction heating circuit; converting the resonant current into a second voltage value; comparing the second voltage value with a count reference value; generating one or more output pulses; comparing a count of the one or more output pulses with a reference count, or comparing an on-duty time of the one or more output pulses with a reference time; and based on (i) the comparison of the count with the reference count or (ii) the comparison of the on-duty time with the reference time, determining whether an object is present on a working coil.
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公开(公告)号：US11304270B2
公开(公告)日：2022-04-12
申请号：US16678803
申请日：2019-11-08
Applicant: LG Electronics Inc.
Inventor： Younghwan Kwack , Seongho Son , Jaekyung Yang , Yongsoo Lee
Abstract: An induction heating device includes a working coil, an inverter including a first switching element and a second switching element; a gate driver including a first sub-gate driver and a second sub-gate driver; and a protection circuit disposed between the inverter and the gate driver. The protection circuit includes a first resistor disposed between a gate terminal of the first switching element and an output terminal of the first sub-gate driver, a second resistor connected electrically in parallel to the first resistor, a protection circuit resistor disposed between a reference voltage terminal of the first sub-gate driver and a first node between the first switching element and the second switching element, a protection circuit diode disposed between a ground and a second node between the protection circuit resistance and the reference voltage terminal, and a bootstrap circuit disposed between the second node and the external power supply.
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公开(公告)号：US11178731B2
公开(公告)日：2021-11-16
申请号：US16198168
申请日：2018-11-21
Applicant: LG Electronics Inc.
Inventor： Seongjun Kim , Seongho Son , Jaekyung Yang , Yongsoo Lee
Abstract: An induction heating device includes: a working coil that includes an annularly-coiled conductive wire and that defines an annular coil hole at a central region of the working coil; a ferrite core that is located vertically below the working coil and that defines a core hole at a central region of the ferrite core corresponding to the annular coil hole; and an indicator board support that is located vertically below the ferrite core. The indicator board support includes a hook that extends to the core hole in a vertical direction and that is configured to insert into the core hole.
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公开(公告)号：US20210313871A1
公开(公告)日：2021-10-07
申请号：US17082450
申请日：2020-10-28
Applicant: LG ELECTRONICS INC.
Inventor： Younghwan KWACK , Seongho Son , Seonho Jeon , Chuhyoung Cho , Jongseong JI
IPC: H02M1/08
Abstract: A method is provided for operating a resonant power conversion apparatus The method may include charging a capacitor connected to a power source in parallel, and determining a discharge time point and a discharge period of a discharge circuit, where the discharge circuit includes a resistor and a switch connected in series and is connected to the capacitor in parallel. The method may also include outputting, by a switch control circuit, a switch control signal by determining the switch control signal based on the discharge time point and the discharge period, and discharging the charged capacitor through the resistor based on the switch control signal applied to the switch. A resonant power conversion apparatus for performing the above-described method is provided.
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