Resonance type power transmission system, transmitting device, and power supply position control system
First Claim
1. A resonance type power transmission system comprising:
- a transmitting device including plural transmitting antennas, and a receiving device including a receiving antenna;
wherein the transmitting device comprises;
one transmission power supply to output electric power, whose frequency matches a resonance frequency of each of the transmitting antennas, on a basis of input power;
plural switches respectively provided for the transmitting antennas, the switches being switchable to connect or disconnect supply lines for supplying the electric power outputted by the transmission power supply to the transmitting antennas;
a parameter detector comprised of a function of preventing breakage of the transmission power supply, the function being included by the transmission power supply, to detect parameters regarding the transmission power supply, the parameters being changed as the receiving antenna gets close to the transmitting antennas;
a switch controller to estimate a position of the receiving antenna from a result of the detection performed by the parameter detector, and to perform switching control on the switches in accordance with the position of the receiving antenna; and
a matching circuit that matches impedance of the transmission power supply to that of each of the transmitting antennas, and wherein when the estimated position of the receiving antenna extends over those of two or more of the transmitting antennas, the switch controller switches the switches to connect the supply lines of the two or more of the transmitting antennas and causes the matching circuit to control a phase difference of the electric power outputted to the two or more transmitting antennas.
1 Assignment
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Accused Products
Abstract
A transmitting device includes a transmission power supply to output electric power, whose frequency matches a resonance frequency of each of the transmitting antennas, based on input power, plural switches respectively provided for the transmitting antennas, the switches being switchable to connect or disconnect supply lines for supplying the electric power outputted by the transmission power supply to the transmitting antennas, a parameter detector to detect parameters regarding the transmission power supply, the parameter being changed as a receiving antenna gets close to the transmitting antennas, by using a protective function of the transmission power supply, and a switch controller to estimate the position of the receiving antenna from the result of the detection, and to perform switching control on the switches in accordance with the position of the receiving antenna.
15 Citations
17 Claims
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1. A resonance type power transmission system comprising:
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a transmitting device including plural transmitting antennas, and a receiving device including a receiving antenna; wherein the transmitting device comprises; one transmission power supply to output electric power, whose frequency matches a resonance frequency of each of the transmitting antennas, on a basis of input power; plural switches respectively provided for the transmitting antennas, the switches being switchable to connect or disconnect supply lines for supplying the electric power outputted by the transmission power supply to the transmitting antennas; a parameter detector comprised of a function of preventing breakage of the transmission power supply, the function being included by the transmission power supply, to detect parameters regarding the transmission power supply, the parameters being changed as the receiving antenna gets close to the transmitting antennas; a switch controller to estimate a position of the receiving antenna from a result of the detection performed by the parameter detector, and to perform switching control on the switches in accordance with the position of the receiving antenna; and a matching circuit that matches impedance of the transmission power supply to that of each of the transmitting antennas, and wherein when the estimated position of the receiving antenna extends over those of two or more of the transmitting antennas, the switch controller switches the switches to connect the supply lines of the two or more of the transmitting antennas and causes the matching circuit to control a phase difference of the electric power outputted to the two or more transmitting antennas. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A transmitting device comprising:
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plural transmitting antennas; one transmission power supply to output electric power, whose frequency matches a resonance frequency of each of the transmitting antennas, on a basis of input power; plural switches respectively provided for the transmitting antennas, the switches being switchable to connect or disconnect supply lines for supplying the electric power outputted by the transmission power supply to the transmitting antennas; a parameter detector comprised of a function of preventing breakage of the transmission power supply, the function being included by the transmission power supply, to detect parameters regarding the transmission power supply, the parameters being changed as a receiving antenna of a receiving device gets close to the transmitting antennas; a switch controller to estimate a position of the receiving antenna from a result of the detection performed by the parameter detector, and to perform switching control on the switches in accordance with the position of the receiving antenna; and a matching circuit that matches impedance of the transmission power supply to that of each of the transmitting antennas, and wherein when the estimated position of the receiving antenna extends over those of two or more of the transmitting antennas, the switch controller switches the switches to connect the supply lines of the two or more of the transmitting antennas and causes the matching circuit to control a phase difference of the electric power outputted to the two or more transmitting antennas.
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14. A power supply position control system comprising:
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a transmitting device including plural transmitting antennas, and a receiving device including a receiving antenna; wherein the transmitting device comprises; one transmission power supply to output electric power, whose frequency matches a resonance frequency of each of the transmitting antennas, on a basis of input power; plural switches respectively provided for the transmitting antennas, the switches being switchable to connect or disconnect supply lines for supplying the electric power outputted by the transmission power supply to the transmitting antennas; a parameter detector comprised of a function of preventing breakage of the transmission power supply, the function being included by the transmission power supply, to detect parameters regarding the transmission power supply, the parameters being changed as the receiving antenna gets close to the transmitting antennas; a switch controller to use a protective function of the transmission power supply, estimate a position of the receiving antenna from a result of the detection performed by the parameter detector, and perform switching control on the switches in accordance with the position of the receiving antenna; and a matching circuit that matches impedance of the transmission power supply to that of each of the transmitting antennas, and wherein when the estimated position of the receiving antenna extends over those of two or more of the transmitting antennas, the switch controller switches the switches to connect the supply lines of the two or more of the transmitting antennas and causes the matching circuit to control a phase difference of the electric power outputted to the two or more transmitting antennas.
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15. A resonance type power transmission system comprising:
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a transmitting device including plural transmitting antennas, and a receiving device including a receiving antenna; wherein the transmitting device comprises; a transmission power supply to output electric power, whose frequency matches a resonance frequency of each of the transmitting antennas, on a basis of input power; plural switches respectively provided for the transmitting antennas, the switches being switchable to connect or disconnect supply lines for supplying the electric power outputted by the transmission power supply to the transmitting antennas; a parameter detector to detect parameters regarding the transmission power supply, the parameters being changed as the receiving antenna gets close to the transmitting antennas; and a switch controller to estimate a position of the receiving antenna from a result of the detection performed by the parameter detector, and to perform switching control on the switches in accordance with the position of the receiving antenna; and a matching circuit that matches impedance of the transmission power supply to that of each of the transmitting antennas, and wherein when the estimated position of the receiving antenna extends over those of two or more of the transmitting antennas, the switch controller switches the switches to connect the supply lines of the two or more of the transmitting antennas and causes the matching circuit to control a phase difference of the electric power outputted to the two or more transmitting antennas.
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16. A transmitting device comprising:
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plural transmitting antennas; a transmission power supply to output electric power, whose frequency matches a resonance frequency of each of the transmitting antennas, on a basis of input power; plural switches respectively provided for the transmitting antennas, the switches being switchable to connect or disconnect supply lines for supplying the electric power outputted by the transmission power supply to the transmitting antennas; a parameter detector to detect parameters regarding the transmission power supply, the parameters being changed as a receiving antenna of a receiving device gets close to the transmitting antennas; a switch controller to estimate a position of the receiving antenna from a result of the detection performed by the parameter detector, and to perform switching control on the switches in accordance with the position of the receiving antenna; and a matching circuit that matches impedance of the transmission power supply to that of each of the transmitting antennas, and wherein when the estimated position of the receiving antenna extends over those of two or more of the transmitting antennas, the switch controller switches the switches to connect the supply lines of the two or more of the transmitting antennas and causes the matching circuit to control a phase difference of the electric power outputted to the two or more transmitting antennas.
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17. A power supply position control system comprising:
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a transmitting device including plural transmitting antennas, and a receiving device including a receiving antenna; wherein the transmitting device comprises; a transmission power supply to output electric power, whose frequency matches a resonance frequency of each of the transmitting antennas, on a basis of input power; plural switches respectively provided for the transmitting antennas, the switches being switchable to connect or disconnect supply lines for supplying the electric power outputted by the transmission power supply to the transmitting antennas; a parameter detector to detect parameters regarding the transmission power supply, the parameters being changed as the receiving antenna gets close to the transmitting antennas; a switch controller to use a protective function of the transmission power supply, estimate a position of the receiving antenna from a result of the detection performed by the parameter detector, and perform switching control on the switches in accordance with the position of the receiving antenna; and a matching circuit that matches impedance of the transmission power supply to that of each of the transmitting antennas, and wherein when the estimated position of the receiving antenna extends over those of two or more of the transmitting antennas, the switch controller switches the switches to connect the supply lines of the two or more of the transmitting antennas and causes the matching circuit to control a phase difference of the electric power outputted to the two or more transmitting antennas.
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Specification