POWER TRANSMISSION DEVICE
    81.
    发明申请

    公开(公告)号:US20180269719A1

    公开(公告)日:2018-09-20

    申请号:US15898165

    申请日:2018-02-15

    CPC classification number: H02J50/10 H02J7/0044 H02J7/025 H02J50/12

    Abstract: A power transmission device wirelessly transmits power to a power receiving device placed on a power supply surface. The power transmission device includes: a first power transmission coil that transmits the power by a first transmission method; and a second power transmission coil that is disposed on an outer peripheral side of the first power transmission coil and at a position closer to the power supply surface than the first power transmission coil, and that transmits the power by a second transmission method. A line perpendicular to a coil surface of the second power transmission coil intersects a central axis of the first power transmission coil on a side of the power supply surface at a predetermined angle.

    NON-CONTACT POWER TRANSMISSION APPARATUS AND NON-CONTACT POWER SUPPLY DEVICE

    公开(公告)号:US20180262062A1

    公开(公告)日:2018-09-13

    申请号:US15908078

    申请日:2018-02-28

    Inventor: Masakazu KATO

    CPC classification number: H02J50/60 H02J7/025 H02J50/12 H02J2007/0001

    Abstract: A non-contact power transmission apparatus includes a non-contact power reception device, and a non-contact power supply device. The non-contact power supply device includes a power transmission coil, a power transmission circuit configured to transmit electric power by the power transmission coil, and a first control circuit configured to drive the power transmission circuit by using electric power of either a first voltage or a second voltage lower than the first voltage. The non-contact power reception device includes a power reception coil electromagnetically coupled with the power transmission coil, and a load circuit to which the electric power received by the power reception coil is supplied when connected to the power reception coil. The first control circuit carries out an authentication processing and a foreign object detection processing for detecting a foreign object before the load circuit and the power transmission coil are connected in the non-contact power reception device.

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