SYSTEM AND METHOD FOR BIDIRECTIONAL WIRELESS POWER TRANSFER
First Claim
1. A remote device capable of receiving and transmitting wireless power, said remote device being separable from a wireless power supply having a transmitter, said remote device being separable from another device having a receiver, said remote device comprising:
- a transceiver and a resonator circuit operable to couple with the transceiver, said resonator circuit configured to couple with at least one of the transmitter of the wireless power supply and the receiver of the other device, said resonator circuit configured to transfer power from the transmitter of the wireless power supply to the transceiver in response to a transmitter field generated by the transmitter, said resonator circuit configured to transfer power from the transceiver to the receiver of the other device in response to a transceiver field generated by the transceiver;
said transceiver configured to a) generate electrical power based on power received from the resonator circuit in response to the transmitter field generated by the transmitter of the wireless power supply and b) generate the transceiver field, in response to being drive, to transfer power to the receiver of the other device via the resonator circuit;
wireless power transceiver circuitry coupled to said transceiver, said wireless power transceiver circuitry being configurable between a receive mode and a transmit mode;
wherein in said transmit mode, said wireless power transceiver circuitry is capable of driving said transceiver to generate the transceiver field; and
wherein in said receive mode, said wireless power transceiver circuitry is capable of rectifying said electrical power received in said transceiver.
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Accused Products
Abstract
The present invention relates to a wireless power supply system including a remote device capable of both transmitting and receiving power wirelessly. The remote device includes a self-driven synchronous rectifier. The wireless power supply system may also include a wireless power supply configured to enter an OFF state in which no power, or substantially no power, is drawn, and to wake from the OFF state in response to receiving power from a remote device.
22 Citations
20 Claims
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1. A remote device capable of receiving and transmitting wireless power, said remote device being separable from a wireless power supply having a transmitter, said remote device being separable from another device having a receiver, said remote device comprising:
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a transceiver and a resonator circuit operable to couple with the transceiver, said resonator circuit configured to couple with at least one of the transmitter of the wireless power supply and the receiver of the other device, said resonator circuit configured to transfer power from the transmitter of the wireless power supply to the transceiver in response to a transmitter field generated by the transmitter, said resonator circuit configured to transfer power from the transceiver to the receiver of the other device in response to a transceiver field generated by the transceiver; said transceiver configured to a) generate electrical power based on power received from the resonator circuit in response to the transmitter field generated by the transmitter of the wireless power supply and b) generate the transceiver field, in response to being drive, to transfer power to the receiver of the other device via the resonator circuit; wireless power transceiver circuitry coupled to said transceiver, said wireless power transceiver circuitry being configurable between a receive mode and a transmit mode; wherein in said transmit mode, said wireless power transceiver circuitry is capable of driving said transceiver to generate the transceiver field; and wherein in said receive mode, said wireless power transceiver circuitry is capable of rectifying said electrical power received in said transceiver. - 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 of operating a remote device for receiving and transmitting wireless power, the remote device including a transceiver and resonator circuit operable to couple with the transceiver, the remote device being separable from a wireless power supply having a transmitter for transmitting wireless power, the remote device being separable from another device having a receiver for transmitting wireless power, said method comprising:
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driving the transceiver with electrical power to generate a transceiver field; transferring, in the resonator circuit, wireless power from the transceiver to the receiver of the other device in response to the transceiver field generated by the transceiver; transferring, in the resonator circuit, wireless power from the transmitter of the wireless power supply to the transceiver in response to a transmitter field generated by the wireless power supply; and generating electrical power in the transceiver based on wireless power received from the wireless power supply via the resonator circuit. - View Dependent Claims (18, 19, 20)
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Specification