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公开(公告)号：US10348133B2
公开(公告)日：2019-07-09
申请号：US15865975
申请日：2018-01-09
Inventor： Hideaki Miyamoto , Satoru Kikuchi , Tsutomu Sakata , Eiji Takahashi , Hiroshi Kanno
Abstract: A power transmitter wirelessly transmits electric power to a power receiver that includes a reception antenna. The power transmitter includes: an inverter circuit; a transmission antenna which sends out the AC power having been output from the inverter circuit; and a control circuit which, based on measurement values of voltage and current to be input to the inverter circuit, determines a value of a control parameter defining an output voltage from the inverter circuit and controls the inverter circuit by using the determined value of the control parameter. When at least one of the measurement values of voltage and current to be input to the inverter circuit changes, the control circuit changes the value of the control parameter based on the measurement values of voltage and current so that a voltage to be output from the power receiving circuit is maintained within a predetermined range.
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公开(公告)号：US10199880B2
公开(公告)日：2019-02-05
申请号：US15825763
申请日：2017-11-29
Inventor： Eiji Takahashi , Hideaki Miyamoto
IPC: H01F38/14 , H02J50/80 , H02J50/40 , H02J50/12 , B25J9/12 , B25J19/00 , H02P3/18 , H02P27/06 , H02J7/02
Abstract: A wireless power feeding unit includes a power transmitting module and a power receiving module. The power transmitting module includes: a first inverter circuit which is connected to a power source via a switch; a first transmission coil connected to the first inverter circuit; a second inverter circuit which is connected to the power source or another power source not via the switch; a second transmission coil which is connected to the second inverter circuit; and a power transmission control circuit which controls the first and second inverter circuits. The power receiving module includes a first reception coil opposed to the first transmission coil and a second reception coil opposed to the second transmission coil. During operation of the first and second inverter circuits, even while supply of power to the first inverter circuit is stopped, the power transmission control circuit maintains control of the second inverter circuit.
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公开(公告)号：US12184080B2
公开(公告)日：2024-12-31
申请号：US18255976
申请日：2020-12-09
Inventor： Hideaki Miyamoto , Eiji Takahashi , Tsutomu Sakata
Abstract: A wireless power supply unit includes: a power transmitting coil; and a power receiving coil that wirelessly receives electric power from the power transmitting coil. One of the power transmitting coil and the power receiving coil is shaped so that, during use, a central portion thereof is located beyond an outer peripheral portion thereof, as viewed from another one of the power transmitting coil and the power receiving coil.
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公开(公告)号：US10541565B2
公开(公告)日：2020-01-21
申请号：US16227058
申请日：2018-12-20
Inventor： Eiji Takahashi , Hideaki Miyamoto
IPC: H02J50/40 , H02J7/02 , H02J50/70 , H02J50/80 , H02J50/12 , B25J9/12 , B25J19/00 , H01F38/14 , H02P3/18 , H02P27/06
Abstract: A wireless power feeding unit includes a power transmitting module and a power receiving module. The power transmitting module includes: a first inverter circuit which is connected to a power source via a switch; a first transmission coil connected to the first inverter circuit; a second inverter circuit which is connected to the power source or another power source not via the switch; a second transmission coil which is connected to the second inverter circuit; and a power transmission control circuit which controls the first and second inverter circuits. The power receiving module includes a first reception coil opposed to the first transmission coil and a second reception coil opposed to the second transmission coil. During operation of the first and second inverter circuits, even while supply of power to the first inverter circuit is stopped, the power transmission control circuit maintains control of the second inverter circuit.
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