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公开(公告)号：US11949467B2
公开(公告)日：2024-04-02
申请号：US17260790
申请日：2019-07-16
Applicant: LG ELECTRONICS INC.
Inventor： Joonho Park , Bongsik Kwak , Sungkyu Kim , Yongcheol Park , Seonghun Lee , Jihyun Lee
CPC classification number: H04B5/0037 , H02J50/12 , H02J50/40 , H02J50/80 , H04B17/102 , H04W52/383
Abstract: The present invention relates to an apparatus and a method for supporting heterogeneous communication in a wireless power transmission system. The present disclosure discloses a wireless power receiver comprising: a power pickup unit configured to receive, from a wireless power transmitter, a digital ping signal or wireless power by magnetically coupling with the wireless power transmitter at an operating frequency, and to convert an alternating current signal generated by the wireless power into a direct current signal; a communication/control unit configured to receive the direct current signal from the power pickup unit, and to perform at least one of an in-band communication using the operating frequency and an out-band communication using a frequency other than the operating frequency; and a load configured to receive the direct current signal from the power pickup unit. As a heterogeneous communication protocol can be selected at an early stage of power transmission between the wireless power transmitter and the wireless power receiver, it is possible to support various applications of wireless power transmission.
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2.发明授权公开(公告)号：US11316380B2
公开(公告)日：2022-04-26
申请号：US17028733
申请日：2020-09-22
Applicant: LG ELECTRONICS INC.
Inventor： Sungkyu Kim , Bongsik Kwak , Hyunggeol Kwak , Seonghun Lee
Abstract: A wireless power transmitter can include a power transmitter including a plurality of first transmitting coils and a second transmitting coil; and a controller, in which the plurality of first transmitting coils are disposed on a same plane, the second transmitting coil is disposed on a different plane than the plurality of first transmitting coils, the second transmitting coil is disposed at a center of a region corresponding to the plurality of first transmitting coils, an area of a region corresponding to the second transmitting coil is smaller than an area of the region corresponding to the plurality of first transmitting coils, and the controller is configured to transmit power to a wireless power receiver through the plurality of first transmitting coils and the second transmitting coil when a receiving coil in the wireless power receiver is of a first type, and transmit power to the wireless power receiver through the second transmitting coil when the type of the receiving coil is of a second type.
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公开(公告)号：US11296556B2
公开(公告)日：2022-04-05
申请号：US16685874
申请日：2019-11-15
Applicant: LG ELECTRONICS INC.
Inventor： Jihyun Lee , Seonghun Lee , Bongsik Kwak , Joonho Park , Sungkyu Kim
Abstract: A power relay device includes a power receiver configured to wirelessly receive power of a first class when coupled with a wireless power transmission device, a first power converter configured to convert power supplied from the power receiver into a form appropriate for a first mobile terminal, a second power converter configured to receive power from the first power converter and to convert the power into power of a second class, and a power transmitter configured to wirelessly transmit the power of the second class to a second mobile terminal.
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公开(公告)号：US11271436B2
公开(公告)日：2022-03-08
申请号：US16627200
申请日：2018-06-28
Applicant: LG Electronics Inc.
Inventor： Sungkyu Kim , Jeongkyo Seo , Jinmoo Park , Seonghun Lee , Bongsik Kwak , Jaesung Lee , Jihyun Lee , Gyunghwan Yook , Joonho Park , Youngchan Cho
IPC: H02J50/80 , H02J50/12 , H01F38/14 , H02J50/40 , H02J50/60 , H02J7/02 , H04B5/00 , H02J50/90 , H04L27/02
Abstract: A multi-coil based wireless power transmission device is disclosed that includes a primary coil array forming a magnetic coupling with a secondary coil provided in a wireless power reception device to transmit wireless power to the wireless power reception device; a plurality of inverters connected to a plurality of primary coils one-to-one to selectively drive each of the plurality of primary coils; a communication and control unit controlling the plurality of inverters and communication with the wireless power reception device such that at least one primary coil is driven based on the degree of magnetic coupling formed by each primary coil and the secondary coil, thereby determining output, which can be provided by the primary coil array, within a value obtained by summing all the maximum outputs individually set to the respective primary coils.
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公开(公告)号：US11817717B2
公开(公告)日：2023-11-14
申请号：US17593261
申请日：2020-03-16
Applicant: LG ELECTRONICS INC.
Inventor： Hyengcheul Choi , Bongsik Kwak , Hyunggeol Kwak , Sungkyu Kim , Jonggu Kim , Jinhong Kim , Sooyong Park , Yongcheol Park , Joonho Park , Seonghun Lee
CPC classification number: H02J50/12 , H02J50/10 , H02J50/40 , H02J50/80 , H04B5/0031 , H04B5/0037 , H04B5/0081
Abstract: The present specification relates to a wireless power receiving device, receiving method, and receiving system, the device comprising individual rectifiers for each receiving coil, wherein the individual rectifiers comprise isolators for isolating a receiving coil for PC0 from a receiving coil for PC1.
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Patent Agency Ranking
公开(公告)号：US11770029B2
公开(公告)日：2023-09-26
申请号：US17282654
申请日：2019-10-04
Applicant: LG ELECTRONICS INC.
Inventor： Joonho Park , Bongsik Kwak , Sungkyu Kim , Seonghun Lee , Jihyun Lee
CPC classification number: H02J50/402 , H02J50/10 , H02J50/60 , H02J50/80 , H04B5/0087
Abstract: The present disclosure relates to a wireless power transmission device. A wireless power transmission device according to an embodiment of the present disclosure includes: a coil part including a plurality of partially overlapping coils; a coil combination generator configured to generate coil combinations including at least one of the plurality of coils; and a controller configured to transmit a coil selection signal through the coil combinations and to select an operating coil combination from the coil combinations based on a response intensity of a response signal for the coil selection signal and charging efficiency of a wireless power reception device. Accordingly, a high-efficiency charging area can be extended in partially overlapping multiple coils.
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公开(公告)号：US11349320B2
公开(公告)日：2022-05-31
申请号：US16742374
申请日：2020-01-14
Applicant: LG ELECTRONICS INC.
Inventor： Sungkyu Kim , Seonghun Lee , Bongsik Kwak , Jihyun Lee , Joonho Park
Abstract: The present invention relates to a wireless power transmitting device. The wireless power transmitting device comprises a transmitter coil section with a plurality of partially overlapping transmitter coils; a fan for cooling heat generated by the transmitter coil section; and a controller for sending out a detection signal through the transmitter coil section, calculating the number of operating coils based on the strength of a response signal to the detection signal, and controlling the fan based on the calculated number of operating coils. Accordingly, heat generated by the transmitter coils can be reduced more efficiently.
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公开(公告)号：US11296558B2
公开(公告)日：2022-04-05
申请号：US16687325
申请日：2019-11-18
Applicant: LG ELECTRONICS INC.
Inventor： Jihyun Lee , Seonghun Lee , Bongsik Kwak , Joonho Park , Sungkyu Kim
Abstract: A wireless power transmission apparatus can include a resonant circuit including a plurality of coils and a plurality of capacitor elements respectively connected to the plurality of coils; a first sensor configured to sense a change in inductance of each of the plurality of coils; a second sensor configured to sense a change in a quality factor of each of the plurality of coils; and a controller configured to calculate feature values based on an inductance variation and a quality factor variation for detecting a foreign object, and determine the foreign object is present on a charging surface of the wireless power transmission apparatus based on whether a feature value combination selected from among the feature values falls within a reference region on a coordinate plane formed by an intersection of a first axis and a second axis, in which the first axis is based on inductance variation and the second axis is based on quality factor variation.
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公开(公告)号：US11211833B2
公开(公告)日：2021-12-28
申请号：US16741908
申请日：2020-01-14
Applicant: LG Electronics Inc.
Inventor： Joonho Park , Seonghun Lee , Bongsik Kwak , Jihyun Lee , Sungkyu Kim
Abstract: The present invention relates to a wireless power transfer apparatus. The wireless power transfer apparatus includes: a resonant circuit unit including a plurality of coils and a plurality of capacitor elements respectively connected to the plurality of coils; and a controller configured to calculate individual quality factor of each of the plurality of coils and a total quality factor of the plurality of coils, at a resonant frequency, and calculate whether foreign matter exists on a charging surface, based on the total quality factor and the individual quality factor, at the resonance frequency. Accordingly, foreign matter on the charging surface can be detected more easily.
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公开(公告)号：US11049648B2
公开(公告)日：2021-06-29
申请号：US16339988
申请日：2017-06-28
Applicant: LG ELECTRONICS INC.
Inventor： Taewook Kwon , Bongsik Kwak , Jeongkyo Seo , Beomseok Chae , Jaesoon Kwon , Sungkyu Kim
Abstract: According to an embodiment of the present invention, a resonator transmitting power in a resonant mode includes: a first coil having a wire group including three wires arranged in line and alternately extended in first direction and second direction orthogonal to the first direction; and a second coil including three sub-coils and ferrite plates, and the first coil may be stacked adjacent to the second coil, and the first coil may correspond to a resonance coil driven in the resonance mode and the second coil may correspond to an induction coil driven in an induction mode, respectively.
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