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21.发明申请公开(公告)号：US20200328629A1
公开(公告)日：2020-10-15
申请号：US16915836
申请日：2020-06-29
Applicant: LG ELECTRONICS INC.
Inventor： Kyunghwan KIM , Yongcheol PARK , Jihyun LEE , Gyunghwan YOOK
Abstract: Provided are an apparatus and method for performing foreign object detection in a wireless power transfer system. The present specification discloses a method comprising receiving a digital ping from the wireless power transmitter; transmitting an identification and configuration packets to the wireless power transmitter; transmitting a foreign object detection (FOD) state packet which indicates a reference Q factor of the wireless power receiver to the wireless power transmitter; and receiving wireless power through magnetic coupling from the wireless power transmitter based on the foreign object detection result of the wireless power transmitter using the reference Q factor. Irrespective of individual characteristics of a wireless power receiver, accuracy and reliability of detecting a foreign object may be improved.
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公开(公告)号：US20170291473A1
公开(公告)日：2017-10-12
申请号：US15425658
申请日：2017-02-06
Applicant: LG ELECTRONICS INC.
Inventor： Bumsuk KIM , Kyunghwan KIM , Namsik YIM , Joohyung KIM , Junggu LEE , Junyoung LIM
CPC classification number: B60H1/3217 , B60H1/00485 , B60H1/00978 , B60H1/3223 , B60H1/3225 , B60H2001/3266 , F04B49/03 , F04D27/0292 , F25B49/005
Abstract: A safety device for a vehicle can include an impulse sensor configured to sense an impact to the vehicle and generate an impulse signal based on the impact, a compressor configured to compress refrigerant for a refrigeration cycle of the vehicle, and a safety valve connected to the compressor and configured to receive the impulse signal from the impulse sensor, and in response to the impulse signal exceeding a predetermined value, open the safety valve to place an inner space of the compressor in communication with an outside of the compressor for discharging the refrigerant outside the vehicle.
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公开(公告)号：US20170141604A1
公开(公告)日：2017-05-18
申请号：US15319980
申请日：2015-06-18
Applicant: LG ELECTRONICS INC.
Inventor： Yongcheol PARK , Jaesung LEE , Jeongkyo SEO , Jungjoon LEE , Beomseok CHAE , Jihyun LEE , Kyunghwan KIM
Abstract: The present disclosure relates to a foreign object detection method of a wireless power transmitter, and the method may include acquiring the frequency characteristics of a current flowing through a coil within the wireless power transmitter, comparing a peak frequency with a resonant frequency, and detecting whether or not the foreign object is placed on the transmitter through the comparison. In addition, the present disclosure relates to an interference avoidance method of a wireless power transmitter, and the method may include connecting a head unit of an automobile in a wireless manner through a communication device, receiving a first signal for avoiding interference from the head unit to stop wireless charging or change a first frequency band to a second frequency band, and receiving a second signal from the head unit to resume the wireless charging or change to the first frequency band.
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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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