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    Wireless power reception apparatus and method therefor
    66.
    发明授权
    Wireless power reception apparatus and method therefor 有权

    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

    IPC: H01F38/14 ,  H02J50/80 ,  H02J50/40 ,  H01F27/30 ,  H01F27/36 ,  H02J50/70

    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.

    Wireless power transfer apparatus
    67.
    发明授权
    Wireless power transfer apparatus 有权

    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

    IPC: H02J50/60 ,  H02J50/12 ,  H02J50/40 ,  H01F38/14 ,  H02J7/00

    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.

    Wireless power transmission apparatus and method
    69.
    发明授权
    Wireless power transmission apparatus and method 有权

    公开(公告)号：US10910878B2

    公开(公告)日：2021-02-02

    申请号：US16215080

    申请日：2018-12-10

    Applicant: LG ELECTRONICS INC.

    Inventor： Jaesung Lee ,  Jinmoo Park ,  Jihyun Lee

    IPC: H02J50/10 ,  H02J50/70 ,  H02J50/80 ,  H02J50/12 ,  H02J50/60 ,  H02J50/90 ,  H02J7/02

    Abstract: A wireless power transfer device includes an inverter configured to convert DC input to an AC waveform that drives a resonant circuit, a primary coil configured to generate a magnetic field, a shield material placed below the primary coil, a current sensor configured to monitor current in the primary coil, and a communications and control unit configured to communicate with a wireless power receiver device and control power transfer, wherein the primary coil consists of a single layer of which a number of turns is 12, and consists of 105 strands Litz wire of which the diameter is 0.08 mm, wherein the shield material is at least 1.5 mm thick and extends at least 2.5 mm beyond the outside of the primary coil, and wherein the primary coil and the shield material has a self-inductance 10.0 μH.

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