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公开(公告)号：US11159060B2
公开(公告)日：2021-10-26
申请号：US15700535
申请日：2017-09-11
发明人： Kentaro Murata , Kohei Onizuka
摘要： A wireless power-supply control apparatus to perform control on transmission of power from at least one power transmitter comprising a plurality of first antennas to a plurality of power receivers, has a first communicator and a controller. The first communicator to receive propagation path information between the power transmitter and the plurality of power receivers and requested-power information on requested power of the plurality of power receivers, from the power transmitter or the plurality of power receivers. The controller to control power to be transmitted from the power transmitter to a predetermined value and control at least either one of a phase or an amplitude of power to be supplied to the plurality of first antennas, based on the propagation path information and the requested-power information, so that a specific number of power receivers receiving power larger than the requested power is equal to or larger than a predetermined number.
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公开(公告)号：US12088116B2
公开(公告)日：2024-09-10
申请号：US17163943
申请日：2021-02-01
发明人： Kentaro Murata , Kohei Onizuka , Toshiya Mitomo
摘要： A wireless power transmission device that transmits wireless power by a radio wave to a plurality of power receivers, has a power transmission condition calculator that calculates power transmission conditions including power transmission periods of two or more of a plurality of different power transmission patterns based on receiving power information and required electric energy information from the plurality of power receivers, and power transmission circuitry that transmits a radio wave while switching between the two or more power transmission patterns under the calculated power transmission conditions.
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公开(公告)号：US10777886B2
公开(公告)日：2020-09-15
申请号：US16290403
申请日：2019-03-01
发明人： Kentaro Murata , Kohei Onizuka , Toshiya Mitomo
摘要： A wireless power transmission device includes a power transmitter to transmit a wireless power signal through a plurality of first antennas, a propagation path estimation unit to estimate first propagation path information characterizing a propagation path between the plurality of first antennas and a predetermined antenna, a propagation path extraction unit to extract second propagation path information characterizing a propagation path passing through a moving body, based on at least one of a difference on a time axis of a plurality of pieces of the first propagation path information each acquired at different times, and filtering on a frequency axis, a weight calculator to calculate a weight vector that determines a directivity of a combined power transmission beam formed by the plurality of first antennas, and a controller to control an amplitude and a phase of the wireless power signal inputted to each of the plurality of first antennas.
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公开(公告)号：US11374435B2
公开(公告)日：2022-06-28
申请号：US16295578
申请日：2019-03-07
发明人： Kentaro Murata , Kohei Onizuka , Toshiya Mitomo
摘要： A wireless power-transmission apparatus includes at least one antenna element disposed at a specific position in a three-dimensional space having a predetermined shape and size, to transmit a power transmission beam, an acquirer to acquire an inclination angle of the antenna element to a plane direction of a reference plane and a height of the antenna element to the reference plane, and a controller to control at least one of antenna power and a power transmission direction of the power transmission beam so that interference power of the power transmission beam toward an outside of the three-dimensional space becomes equal to or smaller than a predetermined allowable value when the antenna element is disposed at the acquired inclination angle and height.
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公开(公告)号：US11804875B2
公开(公告)日：2023-10-31
申请号：US17832549
申请日：2022-06-03
发明人： Kentaro Murata , Kohei Onizuka , Toshiya Mitomo
CPC分类号： H04B5/0037 , H02J50/23 , H02J50/402 , H04B7/0682
摘要： A wireless power-transmission apparatus includes at least one antenna element disposed at a specific position in a three-dimensional space having a predetermined shape and size, to transmit a power transmission beam, an acquirer to acquire an inclination angle of the antenna element to a plane direction of a reference plane and a height of the antenna element to the reference plane, and a controller to control at least one of antenna power and a power transmission direction of the power transmission beam so that interference power of the power transmission beam toward an outside of the three-dimensional space becomes equal to or smaller than a predetermined allowable value when the antenna element is disposed at the acquired inclination angle and height.
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