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公开(公告)号：US20210143676A1
公开(公告)日：2021-05-13
申请号：US16612215
申请日：2018-05-25
申请人： Omron Corporation
发明人： Goro Nakao , Yusuke Kawai , Toshiyuki Zaitsu , Atsushi Nomura
摘要： A power receiving device 3 of a non-contact power supply device 1 has: a resonant circuit 20 having a receiving coil 21 for receiving power from a power transmission device 2; and a rectifier circuit 24 for rectifying power output from the resonant circuit 20. The power transmission device 2 has: a transmission coil 14 for supplying power to the power receiving device 3; a power supply circuit 10 for supplying AC power having an adjustable switching frequency to the power transmission coil 14; and a control circuit 17 that stops the power supply from the power supply circuit 10 to the transmission coil 14 when the non-contact power supply device 1 does not perform a constant voltage output operation even if the switching frequency is changed over a predetermined frequency range.
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公开(公告)号：US20210135495A1
公开(公告)日：2021-05-06
申请号：US16612190
申请日：2018-05-11
申请人： Omron Corporation
发明人： Goro Nakao , Yusuke Kawai , Toshiyuki Zaitsu , Atsushi Nomura
摘要： A power transmission device 2 in a non-contact power supply device 1 has: a transmission coil 14 that supplies power to a power reception device 3; and a power supply circuit 10 that supplies AC voltage having a switching frequency at which the transmission coil 14 does not resonate, to the transmission coil 14. A power reception device 3 has: a resonance circuit 20 having a reception coil 21 that receives power from the power transmission device 2 and a resonance capacitor 22 connected in parallel to the reception coil 21; a rectification circuit 24 that rectifies power output from the resonance circuit 20; and a coil 23 connected in series to the reception coil 21, between the resonance circuit 20 and the rectification circuit 24.
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公开(公告)号：US20200083748A1
公开(公告)日：2020-03-12
申请号：US16468201
申请日：2017-11-24
申请人： Omron Corporation
发明人： Goro Nakao , Toshiyuki Zaitsu
摘要： A power reception device 3 of a noncontact power supply apparatus 1 has a resonance circuit 20 that resonates at a first frequency, a voltage detection circuit 27 that measures an output voltage from the resonance circuit 20 and calculates a measured value of the output voltage, and a transmitter 28 that transmits a signal including information about the measured value of the output voltage to a power transmission device 2. The power transmission device 2 of the noncontact power supply apparatus 1 has a transmission coil 13 for supplying power to the power reception device, a power supply circuit 10 that supplies AC power having an adjustable switching frequency to the transmission coil 13, a receiver 14 that receives the signal including the information about the measured value of the output voltage, and a control circuit 16 that controls, in accordance with the measured value of the output voltage, the switching frequency so that the transmission coil 13 and the power supply circuit 10 can continue a soft switching operation.
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公开(公告)号：US20200014244A1
公开(公告)日：2020-01-09
申请号：US16468179
申请日：2017-11-24
申请人： Omron Corporation
发明人： Goro Nakao , Toshiyuki Zaitsu
IPC分类号： H02J50/12
摘要： A power transmission device of this noncontact power supply apparatus has a transmission coil for supplying power to a power reception device, and a power supply circuit that supplies AC power to the transmission coil. A power reception device of the noncontact power supply apparatus has a reception coil for receiving power from the power transmission device, a variable capacity circuit that is connected to the reception coil in parallel and that can adjust capacitance, a resonance circuit that resonates with a frequency corresponding to the inductance of the reception coil and the capacitance of the variable capacity circuit, a voltage detection circuit that detects an output voltage from the resonance circuit, and a control circuit that controls the capacitance of the variable capacity circuit according to the output voltage.
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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：US11750129B2
公开(公告)日：2023-09-05
申请号：US17442215
申请日：2020-03-05
申请人： OMRON Corporation
CPC分类号： H02P21/22 , H02P27/08 , H02P2205/01
摘要： A servo direct-current feeder system can reduce an oscillating voltage across a power feeding path. The servo direct-current feeder system includes a direct-current power supply, a plurality of motor controllers that each control a servomotor, and a power feeding path that distributes power from the direct-current power supply to the plurality of motor controllers. Each of the plurality of motor controllers includes a current control loop unit that controls a current flowing through the servomotor. The current loop unit includes a current control loop including a notch filter having a center frequency corresponding to a frequency to occur from an oscillating voltage across the power feeding path.
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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：US12040627B2
公开(公告)日：2024-07-16
申请号：US17431551
申请日：2020-03-04
申请人： OMRON Corporation
发明人： Goro Nakao , Toshiyuki Zaitsu
CPC分类号： H02J50/12 , H02J50/402
摘要： A power receiver device of a non-contact power feeding device includes a plurality of resonance circuits that receive power from a power transmitter device, a voltage detection circuit that detects an output voltage from the plurality of resonance circuits, and a control circuit. Receiver coils of the plurality of resonance circuits are arranged so as to be electromagnetically coupled to each other. At least one of resonance circuits includes a variable capacitance circuit that is connected to the receiver coil of the resonance circuit and is regulatable in capacitance. The control circuit regulates the capacitance of the variable capacitance circuit in accordance with the output voltage.
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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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