Wireless power control system
First Claim
1. A wireless power transfer component comprising:
- a resonator circuit adapted to receive power generated by a primary inductor of a wireless power transmitter, said resonator circuit adapted to relay wireless power from the wireless power transmitter to a secondary-side inductor of a wireless power receiver, the resonator circuit having a Q value; and
a Q control subcircuit configured to selectively adjust said Q value of said resonator circuit to control an amount of power relayed by said resonator circuit.
5 Assignments
0 Petitions
Accused Products
Abstract
A wireless power transfer component with a selectively adjustable resonator circuit having a Q control subcircuit that varies the Q factor of the resonator circuit to control the amount of power relayed by the resonator circuit. The resonator circuit may be in the wireless power supply, the wireless power receiver, an intermediate resonator or any combination thereof. The resonator circuit may be actively configured based on a feedback circuit. The feedback circuit may sense a characteristic in the secondary circuit or elsewhere and actively operate the control subcircuit based on the sensed characteristic. The feedback circuit may cause the Q control subcircuit to change (reduce or increase) the Q factor when the sensed characteristic crosses a threshold value. The Q control subcircuit may include a variable resistor having a value that can be varied to adjust the Q factor of the resonator circuit.
32 Citations
58 Claims
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1. A wireless power transfer component comprising:
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a resonator circuit adapted to receive power generated by a primary inductor of a wireless power transmitter, said resonator circuit adapted to relay wireless power from the wireless power transmitter to a secondary-side inductor of a wireless power receiver, the resonator circuit having a Q value; and a Q control subcircuit configured to selectively adjust said Q value of said resonator circuit to control an amount of power relayed by said resonator circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A resonator circuit comprising:
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a resonant inductor; a resonant capacitor, said resonant inductor and said resonant capacitor arranged to form a tank circuit having a Q value; wherein said tank circuit is adapted to receive power generated by a primary inductor of a wireless power transmitter, said tank circuit adapted to relay wireless power from the wireless power transmitter to a secondary-side inductor of a wireless power receiver; wherein said resonator circuit is configured to actively adjust said Q value of said tank circuit in response to a control variable; and wherein said resonant circuit is configured to selectively adjust the Q value to control an amount of power relayed by the resonator circuit. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A resonator circuit comprising:
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a resonant inductor; a resonant capacitor, said resonant inductor and said resonant capacitor arranged to form a tank circuit having a Q value; wherein said tank circuit is adapted to receive power generated by a primary inductor of a wireless power transmitter, said tank circuit adapted to relay wireless power from the wireless power transmitter to a secondary-side inductor of a wireless power receiver; and a Q control subcircuit coupled to said tank circuit and being selectively adjustable to selectively vary said Q value of said tank circuit to control an amount of power relayed by the resonant circuit, said Q control subcircuit configured to selectively adjust said Q value in response to a control variable. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52)
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53. A wireless power transmitter comprising:
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a primary inductor; a primary resonator circuit having a Q value; wherein said primary resonator circuit is adapted to receive power generated by said primary inductor of the wireless power transmitter, said primary resonator circuit adapted to relay wireless power from said primary inductor to a secondary-side inductor of a wireless power receiver; and a Q control subcircuit configured to selectively adjust said Q value to regulate an amount of power emanating from said wireless power transmitter. - View Dependent Claims (54, 55, 56, 57, 58)
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Specification