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公开(公告)号：US20170279315A1
公开(公告)日：2017-09-28
申请号：US15622297
申请日：2017-06-14
Inventor： TSUTOMU SAKATA , HIROSHI KANNO , EIJI TAKAHASHI , SATORU KIKUCHI
IPC: H02J50/40 , H04B5/00 , H02J50/80 , H02J50/12 , H02M7/5387
CPC classification number: H02J50/40 , H02J50/12 , H02J50/50 , H02J50/80 , H02M3/335 , H02M7/53871 , H02M2001/007 , H04B5/0075 , H04B5/02
Abstract: A relay apparatus in a wireless power transmission system includes a relay power reception antenna that receives power transmission alternating current power from a power transmission power transmission antenna, a relay rectifier that converts the power transmission alternating current power into relay direct current power, a relay inverter circuit that converts the relay direct current power into relay alternating current power, and a relay power transmission antenna that wirelessly transmits the relay alternating current power. When transmitting data to the power transmission apparatus through amplitude modulation, the relay apparatus varies amplitude of voltage of the power transmission alternating current power received by the relay power reception antenna between a first amplitude and a second amplitude and performs control for eliminating a difference between a third amplitude of the relay alternating current power and a fourth amplitude of the relay alternating current power.
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公开(公告)号：US20180294678A1
公开(公告)日：2018-10-11
申请号：US16009955
申请日：2018-06-15
Inventor： TSUTOMU SAKATA , EIJI TAKAHASHI , SATORU KIKUCHI , HIROSHI KANNO
Abstract: A wireless power transmission system includes: a power transmitting device; a power receiving device; and a relay device. In a state where the relay side switch circuit has the relay side rectifier and the relay side load in a non-contact state, and the receiving side switch circuit has the receiving side rectifier and the receiving side load in a non-contact state, power is transmitted from the power transmitting device to the power receiving device via the relay device. After a DC voltage output from the receiving side rectifier reaching a requested voltage of the power receiving device, the receiving side switch circuit connects the receiving side rectifier to the receiving side load at a timing T2 that is different from a timing T1 at which the relay side switch circuit connects the relay side rectifier to the relay side load.
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公开(公告)号：US20170239822A1
公开(公告)日：2017-08-24
申请号：US15397914
申请日：2017-01-04
Inventor： TSUTOMU SAKATA , EIJI TAKAHASHI , HIROSHI KANNO , SATORU KIKUCHI
CPC classification number: B25J19/00 , B25J9/04 , B25J9/123 , B25J9/1664 , B25J18/02 , B25J19/0045 , H02J50/10 , H02K7/06
Abstract: An electrodynamic apparatus includes a first arm extending in a first direction, a second arm supported by the first arm, a linear actuator that moves the second arm along the first direction with respect to the first arm, a support extending in a second direction that is different from the first direction and supporting the first arm, and a rotating mechanism that rotates the support about an axis of rotation parallel to the second direction. The first arm includes a power transmission antenna. The second arm includes a power reception antenna. The power transmission antenna supplies electric power to the power reception antenna wirelessly. In rotating the support, the linear actuator moves the center of gravity of the second arm to the axis of rotation first, and then the rotating mechanism rotates the support.
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公开(公告)号：US20170098991A1
公开(公告)日：2017-04-06
申请号：US15259222
申请日：2016-09-08
Inventor： EIJI TAKAHASHI , HIROSHI KANNO , TSUTOMU SAKATA , SATORU KIKUCHI
Abstract: A wireless power transmission system includes a power transmitting device, power receiving device, and load. The power transmitting device includes an inverter circuit, power transmitting antenna, power transmission control circuit, and transmitting-side receiver. The power receiving device includes a power receiving antenna, rectifying circuit, and receiving-side transmitter. The power transmission control circuit causes the inverter circuit to output preliminary AC power to activate the power receiving device. The receiving-side transmitter transmits, to the power transmitting device, control information of the power receiving device including (i) a coupling coefficient between the power transmitting antenna and the power receiving antenna, (ii) requested voltage of the power receiving device, and (iii) load impedance of the load. The power transmission control circuit determines the control parameter based on the control information by referring to the table, based on the control information, and adjusts the voltage and frequency of the AC power output from the inverter circuit using the control parameter.
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Patent Agency Ranking
公开(公告)号：US20170098959A1
公开(公告)日：2017-04-06
申请号：US15258267
申请日：2016-09-07
Inventor： SATORU KIKUCHI , TSUTOMU SAKATA , EIJI TAKAHASHI , HIROSHI KANNO
CPC classification number: H02J50/10 , H01H47/223 , H02J50/12 , H02J50/40 , H02J50/50 , H02J50/80 , H02M7/04 , H02M7/44 , H04B5/0037
Abstract: A wireless power transmission system includes a power control device, a power transmitting device, a relay device, and a power receiving device. The power control device includes a direct-current power supply, and a main control circuit that generates a first load instruction value and a second load instruction value. The power transmitting device returns a first response signal and information on alternating-current power supplied to a load circuit in the relay device, such as a voltage value, when receiving the first load instruction value. The load circuit returns a second response signal when receiving the second load instruction value. The main control circuit determines that not the load circuit but the relay-side power receiving circuit is faulty when not receiving the second response signal within a first period and receiving the first response signal within a second period and not receiving is the information within a second period,
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公开(公告)号：US20170288474A1
公开(公告)日：2017-10-05
申请号：US15629974
申请日：2017-06-22
Inventor： TSUTOMU SAKATA , HIROSHI KANNO , EIJI TAKAHASHI , SATORU KIKUCHI
Abstract: A relay apparatus in a wireless power transmission system includes a relay power reception antenna that receives power transmission alternating current power from a power transmission power transmission antenna, a relay rectifier that converts the power transmission alternating current power into relay direct current power, a relay inverter circuit that converts the relay direct current power into relay alternating current power, and a relay power transmission antenna that wirelessly transmits the relay alternating current power. When the relay apparatus has received binary relay received data, the relay apparatus reverses a sign of the binary relay received data and eliminates a difference between a first voltage of the relay direct current power and a second voltage of the relay direct current power on the basis of the reversed binary relay received data.
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公开(公告)号：US20170098965A1
公开(公告)日：2017-04-06
申请号：US15271047
申请日：2016-09-20
Inventor： SATORU KIKUCHI , TSUTOMU SAKATA , EIJI TAKAHASHI , HIROSHI KANNO
IPC: H02J50/12
CPC classification number: H02J50/12 , B25J19/0045 , H02J50/10 , H02J50/50 , H02J50/80
Abstract: A wireless power transmission system includes a power transmission apparatus, a power reception apparatus, a load driving apparatus, and a power control apparatus. The power control apparatus includes a direct current power supply, a main control circuit, and a communicator. Each time an operation load to be achieved by the load driving apparatus changes, the main control circuit updates a load instruction value for the load driving apparatus and a control parameter for adjusting a voltage of first alternating current power, the control parameter being used by the power transmission apparatus to convert first direct current power into the first alternating current power. The power transmission apparatus includes an inverter circuit and a power transmission control circuit that determines the voltage of the first alternating current power on the basis of the control parameter updated by the power control apparatus and that controls the inverter circuit.
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公开(公告)号：US20170098964A1
公开(公告)日：2017-04-06
申请号：US15266381
申请日：2016-09-15
Inventor： TSUTOMU SAKATA , EIJI TAKAHASHI , SATORU KIKUCHI , HIROSHI KANNO
Abstract: A wireless power transmission system includes: a power transmitting device; a power receiving device; and a relay device. In a state where the relay side switch circuit has the relay side rectifier and the relay side load in a non-contact state, and the receiving side switch circuit has the receiving side rectifier and the receiving side load in a non-contact state, power is transmitted from the power transmitting device to the power receiving device via the relay device. After a DC voltage output from the receiving side rectifier reaching a requested voltage of the power receiving device, the receiving side switch circuit connects the receiving side rectifier to the receiving side load at a timing T2 that is different from a timing T1 at which the relay side switch circuit connects the relay side rectifier to the relay side load.
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公开(公告)号：US20170098963A1
公开(公告)日：2017-04-06
申请号：US15259238
申请日：2016-09-08
Inventor： EIJI TAKAHASHI , TSUTOMU SAKATA , SATORU KIKUCHI , HIROSHI KANNO
CPC classification number: H02J50/12 , B60L1/00 , B60L11/182 , B60L2210/30 , B60L2210/40 , H02J7/025 , H02J50/10 , H02J50/20 , H02J50/80 , H02M7/537 , Y02T10/7005 , Y02T10/7072 , Y02T10/7241 , Y02T90/122 , Y02T90/127 , Y02T90/14
Abstract: A power receiving device includes a power receiving antenna that receives AC power from a power transmitting antenna, a rectifier circuit that converts the AC power into DC power, a detection circuit that detects the DC power, a load driven by the DC power, a battery that charges the DC power, a switching circuit that provides i) connection and disconnection between the rectifier circuit and the load and ii) connection and disconnection between the load and the battery, and a control circuit that controls the power receiving device. The control circuit controls the switching circuit to disconnect the rectifier circuit from the load and connect the load to the battery if the DC power is less than or equal to a power threshold value, and drive the load by the DC power charged in the battery.
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