Wireless power communication
First Claim
1. A remote device for receiving wireless power from a wireless power supply, said remote device comprising:
- an adaptive power receiver capable of receiving power from the wireless power supply through inductive coupling, said adaptive power receiver configurable to a first mode and configurable to a second mode;
a load for receiving electrical power generated in said adaptive power receiver, wherein in said first mode, said adaptive power receiver is capable of storing energy received from the wireless power supply, wherein said second mode, said adaptive power receiver releases said stored energy to said load; and
a controller operably coupled to the adaptive power receiver, said controller configured to communicate information to the wireless power supply by switching between said first mode and said second mode.
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Accused Products
Abstract
A remote device in accordance with the present invention includes an adaptive power receiver that receives wireless power from the wireless power supply by induction. The adaptive power receiver may be switched among two or more modes of operation, including, for example, a high-Q mode and a low-Q mode. By controlling the duty cycle of the switching between modes, the amount of energy received by the adaptive receiver may be controlled to communicate to the wireless power supply. This control is a form of adaptive resonance communication or Q control communication. Distortion can be reduced or eliminated by ramping between duty cycles with adjustment to intermediate duty cycle values.
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Citations
30 Claims
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1. A remote device for receiving wireless power from a wireless power supply, said remote device comprising:
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an adaptive power receiver capable of receiving power from the wireless power supply through inductive coupling, said adaptive power receiver configurable to a first mode and configurable to a second mode; a load for receiving electrical power generated in said adaptive power receiver, wherein in said first mode, said adaptive power receiver is capable of storing energy received from the wireless power supply, wherein said second mode, said adaptive power receiver releases said stored energy to said load; and a controller operably coupled to the adaptive power receiver, said controller configured to communicate information to the wireless power supply by switching between said first mode and said second mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for controlling power received from a wireless power supply in a remote device, said method comprising:
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receiving power in an adaptive power receiver via inductive coupling with the wireless power supply; selectively configuring the adaptive power receiver in a first mode in which the adaptive power receiver is capable of storing energy received from the wireless power supply; selectively configuring the adaptive power receiver in a second mode in which the adaptive power receiver releases stored energy to a load; switching between the first mode and the second mode to communicate information to the wireless power supply. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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24. A wireless power system for transmitting wireless power from a wireless power supply to a remote device and communicating from the remote device to the wireless power supply, said wireless power system comprising:
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a remote device including, an adaptive power receiver capable of receiving power from the wireless power supply through inductive coupling, said adaptive power receiver configurable to a first mode and configurable to a second mode; a load for receiving electrical power generated in said adaptive power receiver, wherein in said first mode, said adaptive power receiver is capable of storing energy received from the wireless power supply, wherein said second mode, said adaptive power receiver releases said stored energy to said load; and a controller operably coupled to the adaptive power receiver, said controller configured to communicate information to the wireless power supply by switching between said first mode and said second mode; and a wireless power transmitter including, an adaptive power transmitter capable of transmitting wireless power to the remote device, said adaptive power transmitter configurable to a first resonant mode and configurable to a second resonant mode; wherein in said first resonant mode, said adaptive power transmitter has a first resonant frequency, wherein in said second resonant mode, said adaptive power transmitter has a second, different, resonant frequency; and a controller operably coupled to the adaptive power receiver, said controller capable of controlling power transmitted by the wireless power supply by selectively configuring the adaptive power transmitter between said first resonant mode and said second resonant mode. - View Dependent Claims (25, 26, 27, 28, 29, 30)
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Specification