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21.发明申请公开(公告)号：US20230044514A1
公开(公告)日：2023-02-09
申请号：US17790260
申请日：2019-12-30
Applicant: LG ELECTRONICS INC.
Inventor： Kyunghwan KIM , Seong Hun LEE , Gyunghwan YOOK , Hyoung Seok KIM , Hwanyong KIM
Abstract: Discussed is a wireless charging device that changes a direction of a magnetic field generated by a transmission coil, through a repeater capable of rotating in a plane, and supports a user terminal in parallel with the repeater, to wirelessly transmit power in various directions and at various angles. The wireless charging device includes a power transmitting module including a plurality of transmission coils arranged side by side, therein, a terminal supporting module including a repeater therein and disposed at a slant with respect to an upper surface of the power transmitting module on the upper surface of the power transmitting module, a moving module to move the terminal supporting module along a direction in which the transmission coils are arranged, and a controller to supply a voltage to any one of the plurality of transmission coils depending on a position of the moving module.
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22.发明申请公开(公告)号：US20230032749A1
公开(公告)日：2023-02-02
申请号：US17790266
申请日：2019-12-30
Applicant: LG ELECTRONICS INC.
Inventor： Kyunghwan KIM , Seong Hun LEE , Gyunghwan YOOK , Hyoung Seok KIM , Hwanyong KIM
Abstract: Discussed is a wireless charging device which can change the direction of a magnetic field, generated in a transmission coil, through a vertically and horizontally rotatable repeater, and can hold a user terminal in parallel with the repeater, thereby transmitting wireless power in various directions and at various angles. The wireless charging device includes a case, a flat plate core disposed in the case, multiple transmission coils arranged parallel to each other on the flat plate core, a terminal holder including a repeater therein and disposed on the top surface of the case while sloping with respect to the top surface of the case, and a moving member for moving the terminal holder in the direction in which the plurality of transmission coils are arranged.
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公开(公告)号：US20200091774A1
公开(公告)日：2020-03-19
申请号：US16468618
申请日：2017-08-03
Applicant: LG ELECTRONICS INC.
Inventor： Kyunghwan KIM , Jinho YOUN , Seonghun LEE
Abstract: The present specification discloses a wireless power transmission device and method thereof. Here, the wireless power transmission device according to an embodiment of the present invention includes: a laser light source unit; a light output unit which emits laser light generated from the laser light source to a light receiving unit of the wireless power receiving device; and a control unit which controls shaping of the emitted light according to the angle of arrival with the light receiving unit so that an overfill loss is less than a predetermined threshold value. Here, the control unit detects the point at which the power conversion efficiency of the light receiving unit is highest, and sets and controls the power density value of the emitted light at the detected point.
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24.发明申请公开(公告)号：US20250038579A1
公开(公告)日：2025-01-30
申请号：US18910940
申请日：2024-10-09
Applicant: LG Electronics Inc.
Inventor： Yongcheol PARK , Kyunghwan KIM
Abstract: The present specification provides a wireless power reception apparatus comprising: a power pick-up unit configured to receive wireless power from a wireless power transmission apparatus by magnetic coupling with the wireless power transmission apparatus and convert an AC signal generated by the wireless power into a DC signal; a communication/control unit configured to receive the DC signal from the power pick-up unit and control the wireless power; and a load configured to receive the DC signal from the power pick-up unit. When foreign material is detected before power transmission, wireless power transmission is sustained on the basis of a safe basic power profile of 5 W or less, without interrupting power transmission, and thus, a charging delay can be prevented and the accuracy and reliability of detection of foreign material can be increased despite individual characteristics of the wireless power reception apparatus.
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公开(公告)号：US20240372400A1
公开(公告)日：2024-11-07
申请号：US18280442
申请日：2022-03-07
Applicant: LG Electronics Inc.
Inventor： Kyunghwan KIM , Seonghun LEE , Hyoungseok KIM , Euisuk CHOI
Abstract: A wireless power transfer device transmits wireless power to a wireless power reception device and comprises primary coils, transmitting wireless power by magnetically coupling to secondary coils of the wireless power reception device, and a shield protecting the wireless power transfer device from a magnetic field from at least one of the primary coils. The primary coils comprise: a first bottom coil and a second bottom coil not overlapping each other on a first plane; and a first top coil and a second top coil not overlapping each other on a second plane located above the first plane, wherein one side of the first top coil is located above the first bottom coil, the other side of the first top coil is located above the second bottom coil, and one side of the second top coil is located above the second bottom coil.
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Patent Agency Ranking
26.发明公开公开(公告)号：US20230378816A1
公开(公告)日：2023-11-23
申请号：US18229819
申请日：2023-08-03
Applicant: LG ELECTRONICS INC.
Inventor： Yongcheol PARK , Kyunghwan KIM
Abstract: The present specification provides a wireless power reception apparatus comprising: a power pick-up unit configured to receive wireless power from a wireless power transmission apparatus by magnetic coupling with the wireless power transmission apparatus and convert an AC signal generated by the wireless power into a DC signal; a communication/control unit configured to receive the DC signal from the power pick-up unit and control the wireless power; and a load configured to receive the DC signal from the power pick-up unit. When foreign material is detected before power transmission, wireless power transmission is sustained on the basis of a safe basic power profile of 5 W or less, without interrupting power transmission, and thus, a charging delay can be prevented and the accuracy and reliability of detection of foreign material can be increased despite individual characteristics of the wireless power reception apparatus.
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公开(公告)号：US20220247230A1
公开(公告)日：2022-08-04
申请号：US17597790
申请日：2020-07-27
Applicant: LG ELECTRONICS INC.
Inventor： Kyunghwan KIM , Gyunghwan YOOK , Hyoungseok KIM , Hwanyong KIM
Abstract: A wireless power reception apparatus according to an embodiment of the present specification comprises: a power pickup circuit for receiving, by magnetic coupling to a wireless power transmission apparatus, wireless power from the wireless power transmission apparatus; and a communication/control circuit for communicating with the wireless power transmission apparatus and controlling the received wireless power, wherein the communication/control circuit transmits, before entering a power transmission phase, to the wireless power transmission apparatus, information regarding a first reference quality factor Qt1′(ref) measured at a first frequency f1(ref) and information regarding a second reference quality factor Qt2′(ref) measured at a second frequency f2(ref).
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公开(公告)号：US20210203193A1
公开(公告)日：2021-07-01
申请号：US17268407
申请日：2019-08-06
Applicant: LG ELECTRONICS INC.
Inventor： Kyunghwan KIM , Gyunghwan YOOK , Yongcheol PARK , Jinmoo PARK
Abstract: Disclosed in the present specification is a wireless power reception device comprising: a power pickup unit for receiving wireless power from a wireless power transmission device by means of magnetic coupling with the wireless power transmission device and transforming, into a direct current signal, an alternating current signal generated by wireless power; a communication/control unit for receiving the direct current signal from the power pickup unit, transmitting, to the wireless power transmission device, a first power transmission suspension packet for temporarily suspending transmission of the wireless power in order to detect a foreign object, and performing a foreign object detection procedure within a predetermined time window when the transmission of the wireless power is temporarily suspended; and a load for receiving the direct current signal from the power pickup unit.
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公开(公告)号：US20210194295A1
公开(公告)日：2021-06-24
申请号：US17269508
申请日：2019-08-13
Applicant: LG ELECTRONICS INC.
Inventor： Kyunghwan KIM , Yongcheol PARK , Gyunghwan YOOK
Abstract: The present specification discloses a method for receiving wireless power from a wireless power transmission device on the basis of foreign object detection, the method comprising the steps of: receiving a digital ping from the wireless power transmission device; transmitting identification and configuration packets to the wireless power transmission device; transmitting a foreign substance detection state packet indicating a reference Q factor value of a wireless power reception device to the wireless power transmission device; and receiving wireless power through magnetic coupling from the wireless power transmission device, on the basis of a result of foreign substance detection using the reference Q factor value by the wireless power transmission device.
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公开(公告)号：US20200208325A1
公开(公告)日：2020-07-02
申请号：US16626096
申请日：2018-06-21
Applicant: LG ELECTRONICS INC.
Inventor： Sooyong PARK , Kyunghwan KIM , Hwanyong KIM , Seonghun LEE , Byungsang JUNG
Abstract: Disclosed is a washing machine comprising: a tub which accommodates washing water; a drum which is disposed inside the tub, accommodates cloth, and is rotatable; a transmission coil which is disposed in the tub and supplies power wirelessly; a reception coil which is disposed in the drum and receives the power transmitted from the transmission coil; and a washing force reinforcing unit which is disposed in the drum, operated by the power delivered from the reception coil, and provides washing force to the cloth.
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