POWER OUTPUT CIRCUIT AND CONTACTLESS POWER SUPPLY SYSTEM

    公开(公告)号:US20250105671A1

    公开(公告)日:2025-03-27

    申请号:US18974060

    申请日:2024-12-09

    Abstract: A power output circuit includes a plurality of circuit blocks that are provided in power wirings to which power is inputted and connected to each other side by side. Each of the plurality of circuit blocks includes at least a filter in a last post-stage. Each of the plurality of filters includes a reactor and a capacitor connected to the reactor at a node differing from an output node. Either of the reactor and the capacitor provided in each of the plurality of filters is connected to the power wirings in series so as to connect with the output node. A connection line between the reactor and the capacitor in one filter is connected to a connection line between the reactor and the capacitor in the remaining other filter.

    WIRELESS POWER TRANSFER SYSTEM AND WIRELESS POWER TRANSFER APPARATUS

    公开(公告)号:US20250062646A1

    公开(公告)日:2025-02-20

    申请号:US18935885

    申请日:2024-11-04

    Abstract: A wireless power transfer system comprises: a power conversion unit generating power to be transmitted to a power reception coil; a power transmission unit group constituted by two or more power transmission units, each power transmission unit having a power transmission circuit including a power transmission coil; a control unit controlling supply of power from the power conversion unit to the power transmission unit group; and a position detection unit detecting a position of a mobile body. The control unit, based on position information, supplies power from the power conversion unit to a power transmission unit group that satisfies a power transmission condition including that a distance of the power transmission coil relative to the power reception coil of the mobile body is less than or equal to a predetermined threshold, and does not supply power to a power transmission unit group that does not satisfy the power transmission condition.

    WIRELESS POWER SUPPLY SYSTEM
    14.
    发明公开

    公开(公告)号:US20240106276A1

    公开(公告)日:2024-03-28

    申请号:US18524755

    申请日:2023-11-30

    CPC classification number: H02J50/12 H02J50/005 H02J50/402

    Abstract: A wireless power supply system includes a plurality of power transmission units that receives and supplies power to a power receiving unit via the power transmission coil in a resonance state, and a switching control unit that switches a state of a first power transmission unit to a resonance state when the magnitude of the magnetic flux generated in a first power transmission coil of the first power transmission unit, which is one of the plurality of power transmission units, is greater than a predetermined threshold value, and switches to a non-resonance state when the magnitude is less than the threshold value. The threshold is set as a magnitude that exceeds the magnetic flux generated in the first power transmission coil due to coupling between the first power transmission coil and a second power transmission coil of a second power transmission unit, which is adjacent to first power transmission coil.

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