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公开(公告)号：US20220085650A1
公开(公告)日：2022-03-17
申请号：US17416546
申请日：2019-12-03
申请人： OMRON Corporation
发明人： Atsushi NOMURA , Goro NAKAO , Yusuke KAWAI , Masanobu NAKAJO , Takahiro TAKEYAMA , Kenichi TABATA
摘要： A measured value of an output voltage may be obtained by rectifying power received through a resonance circuit including a reception coil that receives power from a transmission coil of a power transmission device and a resonance capacitor connected in series with the reception coil. When the measured value becomes equal to or larger than an upper limit threshold value, a power reception device of a non-contact power supply device short-circuits a resonance suppression coil provided so as to be electromagnetically couplable with the reception coil. The power transmission device and the power reception device are provided such that power is transmitted from the transmission coil to the reception coil, and the reception coil and the resonance suppression coil are provided such that a coupling degree between the resonance suppression coil and the transmission coil becomes higher than a coupling degree between the reception coil and the transmission coil.
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公开(公告)号：US20210344229A1
公开(公告)日：2021-11-04
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：US20210167639A1
公开(公告)日：2021-06-03
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：US20210167634A1
公开(公告)日：2021-06-03
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：US20230187983A1
公开(公告)日：2023-06-15
申请号：US18058060
申请日：2022-11-22
申请人： OMRON Corporation
发明人： Goro NAKAO , Hiroaki OTA , Yuki ITO , Kenichi TABATA , Atsushi NOMURA , Daiki ANDO , Ken ONOZAKA , Yusuke KAWAI , Mitsunori SUGIURA
摘要： A power transmitting apparatus included in the contactless power feeding apparatus includes a power supply circuit that supplies AC power having a predetermined drive frequency to a transmission coil for supplying power to a power receiving apparatus, a first coil and a first capacitor that are connected between the power supply circuit and the transmission coil, a second capacitor that is connected at first end to the first capacitor and is connected at a second end to the second end of the transmission coil, and a control circuit. Also, the power receiving apparatus includes a receiver coil for receiving power, and a resonant circuit that includes a resonance capacitor that resonates together with the receiver coil. Also, the control circuit of the power transmitting apparatus controls the power supply circuit such that the predetermined drive frequency falls within a predetermined frequency range including a resonance frequency of the resonant circuit.
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公开(公告)号：US20210408828A1
公开(公告)日：2021-12-30
申请号：US17294790
申请日：2019-10-16
申请人： OMRON CORPORATION
发明人： Goro NAKAO , Kenichi TABATA , Yusuke KAWAI , Atsushi NOMURA , Takahiro TAKEYAMA , Masanobu NAKAJO
摘要： A power transmitter device of a non-contact power feeding device includes a transmitter coil configured to supply power to the power receiver device, a power supply circuit including a plurality of switching elements connected between a DC power supply and the transmitter coil in a full-bridge configuration or a half-bridge configuration. The power supply circuit may be configured to switch the plurality of switching elements to an on or off state at a switching frequency to convert DC power supplied from the DC power supply into AC power having the switching frequency and supply the AC power to the transmitter coil, and a phase control circuit including at least one LC series circuit connected to both ends of the transmitter coil.
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公开(公告)号：US20210119485A1
公开(公告)日：2021-04-22
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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公开(公告)号：US20240234003A9
公开(公告)日：2024-07-11
申请号：US18463263
申请日：2023-09-07
申请人： OMRON Corporation
发明人： Goro NAKAO , Yuki ITO , Taichi MISHIMA , Yusuke KAWAI , Hiroyuki IBUKI , Yoshihisa ISHIKAWA
CPC分类号： H01F27/006 , H01F27/2804 , H01F38/14 , H02J50/12
摘要： A winding of a transmission coil included in a power transmission device of a contactless power feed apparatus and serving to transmit AC power to a power reception device contactlessly is formed of a wiring pattern provided on a substrate. The transmission coil is divided into partial coils arranged coaxially. Each of the partial coils is formed such that, among the partial coils, a number of turns of a winding included in a partial coil is larger as the partial coil is located more outwardly.
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公开(公告)号：US20210044151A1
公开(公告)日：2021-02-11
申请号：US17049038
申请日：2019-02-01
申请人： OMRON Corporation
发明人： Goro NAKAO , Yusuke KAWAI , Atsushi NOMURA , Toshiyuki ZAITSU , Takeshi UEMATSU
摘要： A contactless power transmission apparatus includes a transmitter that includes a transmitter coil that supplies electric power to a receiver and a power supply circuit that supplies alternating current power to the transmitter coil. The receiver includes a resonant circuit including a receiver coil that receives electric power from the transmitter and a resonant capacitor connected in series to the receiver coil, a rectifier circuit that rectifies electric power output from the resonant circuit, and a coil connected in parallel to the resonant circuit between the resonant circuit and the rectifier circuit.
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公开(公告)号：US20220123592A1
公开(公告)日：2022-04-21
申请号：US17286566
申请日：2019-10-16
申请人： OMRON Corporation
发明人： Goro NAKAO , Yusuke KAWAI , Kenichi TABATA , Atsushi NOMURA , Takahiro TAKEYAMA , Masanobu NAKAJO
摘要： A power transmission device of a non-contact power feeding device according one or more embodiments may include a control circuit configured to control at least one of a switching frequency or a voltage of AC power supplied from a power supply circuit to a transmission coil, on the basis of a change over time in a strength of a magnetic field detected by a magnetic field detection element configured to detect a strength of a magnetic field generated from the transmission coil of the power transmission device. Whereas, a power reception device has a resonant circuit having a reception coil configured to receive electric power from the power transmission device and a resonance suppression coil arranged to be capable of being electromagnetically coupled to the reception coil.
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