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公开(公告)号：US12057710B2
公开(公告)日：2024-08-06
申请号：US16282360
申请日：2019-02-22
申请人： Omron Corporation
发明人： Goro Nakao , Yusuke Kawai , Atsushi Nomura , Toshiyuki Zaitsu
CPC分类号： H02J50/12 , H01F38/14 , H02J7/00712 , H02M1/4241 , H02M7/06 , H02M7/537 , H02M1/007
摘要： A power transmission device of the non-contact feeding device includes the transmission coil that supplies power to a power receiving device, a power supply circuit that supplies AC power obtained by boosting or stepping down the input voltage to the transmission coil, a voltage detection circuit that measures the voltage input to the power supply circuit, and a control circuit that controls a degree of boosting or step-down with respect to the input voltage by the power supply circuit according to the input voltage measured. The power receiving device includes a resonance circuit including a receiving coil that receives the power from the power transmission device and a resonance capacitor that resonates with the receiving coil according to the power from the power transmission device and a rectifier circuit that rectifies the power output from the resonance circuit.
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公开(公告)号：US20230336028A1
公开(公告)日：2023-10-19
申请号：US18180866
申请日：2023-03-09
申请人： OMRON Corporation
发明人： Takashi OHTA , Yusuke Kawai , Goro Nakao
CPC分类号： H02J50/12 , H02J50/402 , H02J50/80 , H02J50/90
摘要： A power transmission device includes power transmission coils, at least one power supply circuit, a communicator, and a control circuit. The power transmission coils transmit power to a power reception device via a power reception coil. The at least one power supply circuit supplies AC power to the power transmission coils, respectively. The communicator receives a signal indicating a power reception status of the power reception device from the power reception device. According to the power reception status, the control circuit selects a power transmission coil with a highest efficiency of power transmission to the power reception device among the power transmission coils to serve as the power transmission coil for power transmission to the power reception device, and controls the at least one power supply circuit so that AC power is supplied to the selected power transmission coil and is not supplied to an unselected power transmission coil.
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公开(公告)号：US11652368B2
公开(公告)日：2023-05-16
申请号：US17416710
申请日：2019-12-03
申请人： OMRON Corporation
发明人： Goro Nakao , Atsushi Nomura , Yusuke Kawai , Masanobu Nakajo
CPC分类号： H02J50/12 , H02M1/0009 , H02M1/0038 , H02M3/33569
摘要： A power transmission device includes a transmission coil that supplies power to a power reception device, a power supply circuit that converts DC power supplied from a DC power source via a plurality of switching elements connected in a full bridge shape or a half bridge shape between DC power sources and the transmission coil into AC power and supplies the AC power to the transmission coil, a phase adjustment circuit having an LC series circuit connected in parallel with the transmission coil and a switching element connected in series with the LC series circuit, and a control circuit that controls switching on and off of the switching element of the phase adjustment circuit in accordance with a measured value of an amount of current when any of the plurality of switching elements of the power supply circuit is turned off by a current detection circuit.
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公开(公告)号：US11121587B2
公开(公告)日：2021-09-14
申请号：US16612251
申请日：2018-05-10
申请人： Omron Corporation
发明人： Goro Nakao , Yusuke Kawai , Atsushi Nomura , Toshiyuki Zaitsu
摘要： A power transmission device 2 for a non-contact power supply device 1 has: a transmission coil 14; a coil 15 connected in series to the transmission coil 14 without joining to a reception coil 21 during power transmission, said reception coil being included in a resonance circuit 20 for a power reception device 3; a power supply circuit 10 that supplies, to the transmission coil 14, AC power having a switching frequency at which the transmission coil 14 does not resonate; and a control circuit 19 that controls the switching frequency and voltage of the AC power supplied to the transmission coil 14 and controls whether or not both ends of the coil 15 are short-circuited.
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公开(公告)号：US20210159731A1
公开(公告)日：2021-05-27
申请号：US16612251
申请日：2018-05-10
申请人： Omron Corporation
发明人： Goro Nakao , Yusuke Kawai , Atsushi Nomura , Toshiyuki Zaitsu
摘要： A power transmission device 2 for a non-contact power supply device 1 has: a transmission coil 14; a coil 15 connected in series to the transmission coil 14 without joining to a reception coil 21 during power transmission, said reception coil being included in a resonance circuit 20 for a power reception device 3; a power supply circuit 10 that supplies, to the transmission coil 14, AC power having a switching frequency at which the transmission coil 14 does not resonate; and a control circuit 19 that controls the switching frequency and voltage of the AC power supplied to the transmission coil 14 and controls whether or not both ends of the coil 15 are short-circuited.
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公开(公告)号：US11456626B2
公开(公告)日：2022-09-27
申请号：US17429646
申请日：2020-03-02
申请人： OMRON Corporation
发明人： Kenichi Tabata , Goro Nakao , Yusuke Kawai , Atsushi Nomura , Masanobu Nakajo , Takahiro Takeyama
摘要： A power transfer device includes a power transfer coil that transfers power to another device in a non-contact manner, a power transmission and reception circuit that supplies power to the power transfer coil or outputs power received by the power transfer coil to a load circuit, and a protection coil disposed between the power transfer coil and the power transmission and reception circuit to prevent a magnetic flux generated by the power transfer coil from reaching the power transmission and reception circuit. The protection coil includes an air-core coil formed of a wiring pattern of a conductor provided on a board disposed between the power transfer coil and the power transmission and reception circuit, and at least one core coil connected in series to the air-core coil.
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公开(公告)号：US11456624B2
公开(公告)日：2022-09-27
申请号：US17286501
申请日：2019-10-18
申请人： OMRON Corporation
发明人： Goro Nakao , Kenichi Tabata , Yusuke Kawai , Atsushi Nomura , Takahiro Takeyama , Masanobu Nakajo
摘要： A power reception device of a non-contact power feeding device has: a resonant circuit having a reception coil configured to receive electric power from a power transmission device and a resonant capacitor connected in series with the reception coil; a first rectifier circuit configured to rectify electric power received via the resonant circuit; a smoothing capacitor connected to the first rectifier circuit and configured to smooth a voltage outputted from the first rectifier circuit; a sub-coil arranged to be capable of being electromagnetically coupled to the reception coil; and a second rectifier circuit connected between the sub-coil and the smoothing capacitor, and configured to output electric power according to a voltage generated in the sub-coil to the smoothing capacitor in response to a voltage obtained by rectifying a voltage generated in the sub-coil being higher than a voltage between both terminals of the smoothing capacitor.
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公开(公告)号：US11223243B2
公开(公告)日：2022-01-11
申请号：US17265812
申请日：2019-02-18
申请人： OMRON Corporation
发明人： Takashi Miura , Toshiyasu Miwata , Yusuke Kawai , Masashi Sato
摘要： A contactless power supply system includes a contactless power supply device and a power receiving device. Power is supplied from the contactless power supply device to the power receiving device while communication is performed therebetween. The power receiving device includes a power receiving coil unit, and a first communication unit that attaches information having continuity to data transmitted to the contactless power supply device. The contactless power supply device includes a power supply coil unit, a second communication unit, and a power supply control unit that, in a steady state where communication is performed between two communication units after the second communication unit begins receiving the data transmitted from the first communication unit, refers to information having continuity attached to the data, and if continuity has been lost, performs correction to increase the output value of the power from the power supply coil unit to the power receiving coil unit.
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公开(公告)号：US11223239B2
公开(公告)日：2022-01-11
申请号：US17265810
申请日：2019-02-18
申请人： OMRON Corporation
发明人： Takashi Miura , Toshiyasu Miwata , Yusuke Kawai , Masashi Sato
摘要： A contactless power supply system includes a contactless power supply device and a power receiving device. Power is supplied from the contactless power supply device to the power receiving device while communication is performed therebetween. The power receiving device includes a power receiving coil unit, and a first communication unit that communicates with the contactless power supply device and attaches information having continuity to data transmitted to the contactless power supply device. The contactless power supply device includes a power supply coil unit, a second communication unit, and a power supply control unit that, when the second communication unit begins to receive data transmitted from the first communication unit, refers to the information having continuity attached to the continuously received data, and if continuity has been lost, performs correction to increase the output value of the power supplied from the power supply coil unit to the power receiving coil unit.
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公开(公告)号：US11108273B2
公开(公告)日：2021-08-31
申请号：US16971709
申请日：2019-01-18
申请人： OMRON Corporation
发明人： Goro Nakao , Atsushi Nomura , Yusuke Kawai , Toshiyuki Zaitsu
IPC分类号： H02J50/12
摘要： A contactless power transmission apparatus includes a secondary device that includes a resonant circuit including a second transmitter coil that transmits and receives electric power to and from a first transmitter coil included in a primary device and a resonant capacitor connected in parallel to the second transmitter coil, a second converter circuit connected to the resonant circuit to convert alternating current power flowing through the resonant circuit to direct current power and convert direct current power to alternating current power flowing through the resonant circuit, a coil connected in series to the second transmitter coil between the resonant circuit and the second converter circuit, and a capacitor connected in series to the second transmitter coil between the second transmitter coil and the second converter circuit.
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