Controlling wireless power transfer systems
First Claim
1. A method of operating a wireless energy transfer system comprising:
- tuning, by a wireless energy transmitter, a transmitter impedance matching network (IMN) of the wireless energy transmitter to achieve a target transmitter power characteristic;
sending, by the wireless energy transmitter to a wireless energy receiver, power data that indicates a value of a power level of the wireless energy transmitter;
tuning, by the wireless energy receiver and based on the power data, a receiver-IMN to improve an efficiency of the wireless energy transfer system.
1 Assignment
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Accused Products
Abstract
Methods, systems, and devices for operating wireless power transfer systems. One aspect features a wireless energy transfer system that includes a transmitter, and a receiver. The transmitter has a transmitter-IMN and is configured to perform operations including performing a first comparison between a characteristic of a power of the transmitter and a target power. Adjusting, based on the first comparison, a reactance of the transmitter-IMN to adjust the power of the transmitter. The receiver has a receiver-IMN and is configured to perform operations including determining an efficiency of the wireless energy transfer system at a second time based on power data from the transmitter. Performing a second comparison between the efficiency at the second time and an efficiency of the wireless energy transfer system at a first time, the first time being prior to the second time. Adjusting, based on the second comparison, a reactance of the receiver-IMN.
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Citations
20 Claims
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1. A method of operating a wireless energy transfer system comprising:
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tuning, by a wireless energy transmitter, a transmitter impedance matching network (IMN) of the wireless energy transmitter to achieve a target transmitter power characteristic; sending, by the wireless energy transmitter to a wireless energy receiver, power data that indicates a value of a power level of the wireless energy transmitter; tuning, by the wireless energy receiver and based on the power data, a receiver-IMN to improve an efficiency of the wireless energy transfer system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A wireless power transmitter for a wireless energy transfer system, the wireless power transmitter comprising:
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a source resonator; and transmitter power and control circuitry coupled with the source resonator to drive the source resonator with alternating current, the transmitter power and control circuitry comprising a transmitter impedance matching network (IMN), and the transmitter power and control circuitry being configured to tune the transmitter-IMN to achieve a target transmitter power characteristic, and send, to a wireless energy receiver, power data that indicates a value of a power level of the wireless power transmitter, thereby causing the wireless power receiver to tune, based on the power data, a receiver-IMN to improve an efficiency of the wireless energy transfer system. - View Dependent Claims (20)
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Specification