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公开(公告)号：US11355281B2
公开(公告)日：2022-06-07
申请号：US17256624
申请日：2018-06-28
Applicant: LG ELECTRONICS INC.
Inventor： Kyunghwan Kim , Jihyun Lee , Bongsik Kwak , Yongcheol Park
Abstract: The present disclosure relates to a wireless power receiver and a method therefor, the wireless power receiver comprising: a secondary coil which is magnetically coupled to a primary coil provided in a wireless power transmitter so as to receive wireless power from the wireless power transmitter; a shielding member for supporting the secondary coil; a power pickup unit including a rectifier circuit which rectifies an alternating current signal of 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 transmitter. On the basis of the secondary coil and shielding member according to the present embodiment, slimming of an applied product may be achieved and, simultaneously, the same target performance index (required for a medium power level (for example, 60 W) standard) may be realized.
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公开(公告)号：US10992186B2
公开(公告)日：2021-04-27
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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公开(公告)号：US12132331B2
公开(公告)日：2024-10-29
申请号：US18025634
申请日：2021-09-28
Applicant: LG ELECTRONICS INC.
Inventor： Kyunghwan Kim , Seonghun Lee
CPC classification number: H02J50/70 , H02J50/12 , H02J50/402
Abstract: A wireless power transmission apparatus comprises: a plurality of transmission coils configured to transmit a wireless power to a wireless power reception apparatus; a shielding coil which is arranged on at least one surface of a dielectric substrate, and is configured in a loop shape having at least two turns so as to surround the plurality of transmission coils; and a capacitor configured to connect one point to the other point of the shielding coil. The plurality of transmission coils are arranged inside the shielding coil disposed on the dielectric substrate, and the direction of a magnetic field formed at one side and the other side of the plurality of transmission coils adjacent to the shielding coil is formed to be opposite to the direction of a magnetic field formed around the shielding coil so that the shielding coil shields external exposure of electromagnetic waves by the plurality of transmission coils.
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公开(公告)号：US11996705B2
公开(公告)日：2024-05-28
申请号：US17664400
申请日：2022-05-20
Applicant: LG ELECTRONICS INC.
Inventor： Kyunghwan Kim , Jihyun Lee , Bongsik Kwak , Yongcheol Park
Abstract: A wireless power transmitter according to one embodiment of the present disclosure comprises a primary coil forming magnetic coupling with a secondary coil provided in a wireless power receiver and transmitting wireless power to the wireless power receiver, wherein the primary coil is formed by spirally winding a plurality of subcoils connected electrically in parallel while keeping the subcoils in contact with each other, and the subcoil is litz wire consisting of several conducting wires packed in a bundle.
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公开(公告)号：US10097041B2
公开(公告)日：2018-10-09
申请号：US15029741
申请日：2014-09-23
Applicant: LG ELECTRONICS INC.
Inventor： Byungsang Jung , Beomseok Chae , Yongcheol Park , Kyunghwan Kim
Abstract: The present specification which relates to a wireless power transmission device and a control method, capable of transmitting and receiving power wirelessly comprises a power supply unit for supplying power to a receiving device to transmit power wirelessly; and a power transmission control unit for, periodically generating a waveform with a particular frequency, measuring an attenuation coefficient of the waveform at each cycle, measuring a variation in the attenuation coefficient at each cycle, and determining the type of an external material. The present invention has a technical feature wherein the power transmission control unit determines whether to transmit power wirelessly to the receiving device on the basis of the type of the external material.
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Patent Agency Ranking
6.发明授权公开(公告)号：US11569692B2
公开(公告)日：2023-01-31
申请号：US17684905
申请日：2022-03-02
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：US11411425B2
公开(公告)日：2022-08-09
申请号：US16688661
申请日：2019-11-19
Applicant: LG ELECTRONICS INC.
Inventor： Hwanyong Kim , Kyunghwan Kim , Hyoung Seok Kim , Gyunghwan Yuk , Seong Hun Lee
Abstract: The present disclosure relates to a wireless charging device capable of efficiently charging one or more user terminals by performing a tilt function with respect to a portion where the user terminal is held. According to an embodiment of the present disclosure, the wireless charging device include a first body, a depression defined in the first body, a terminal holder that is coupled to an inner surface at both sides of the depression using a hinge and rotates with respect to the first body, a wireless charger disposed in the terminal holder, a second body connected to the first body and inclined with respect to the first body, and a display provided in the second body.
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公开(公告)号：US11146120B2
公开(公告)日：2021-10-12
申请号：US16990466
申请日：2020-08-11
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：US10727942B2
公开(公告)日：2020-07-28
申请号：US16555605
申请日：2019-08-29
Applicant: LG ELECTRONICS INC.
Inventor： Kyunghwan Kim , Gyunghwan Yuk , Byungsang Jung
Abstract: An optical wireless power transfer system including a transmission module having a power light source configured to output power light; a communication light source configured to output communication light; a mirror disposed in a light path of the power light source and the communication light source and configured to pass the power light and reflect the communication light; and a transmitting processor configured to modulate the communication light to have a first modulation. The wireless power transfer system also includes a reception module having a photoelectric cell configured to receive the power light from the transmission module and generate power; a retro-reflector configured to retro-reflect the communication light back to the transmission module; and a receiving processor configured to control the retro-reflector to reflect the communication light to have a second modulation based on the power generated by the photoelectric cell.
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公开(公告)号：US10666082B2
公开(公告)日：2020-05-26
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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