Methods and devices for protection in wireless power systems
First Claim
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1. A wireless power receiver configured to communicate with a wireless power transmitter for receiving electrical power therefrom, the wireless power receiver comprising:
- at least one non-transitory computer-readable medium storing a limit of the wireless power receiver and a sensitivity of the wireless power receiver; and
circuitry configured to;
transmit the limit of the wireless power receiver and the sensitivity of the wireless power receiver to the wireless power transmitter for the wireless power transmitter to determine a signal strength limit for the wireless power transmitter;
orreceive a scaling factor from the wireless power transmitter and determine a signal strength limit for the wireless power transmitter based upon the scaling factor, the limit of the wireless power receiver and the sensitivity of the wireless power receiver, and transmit the signal strength limit for the wireless power transmitter to the wireless power transmitter.
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Abstract
A wireless power system and methods for operating the same are provided for protection of a wireless power receiver during wireless power transfer. A signal strength limit for the wireless power transmitter is determined based upon a receiver limit, a sensitivity of the wireless power receiver and a scaling factor of the wireless power transmitter.
6 Citations
17 Claims
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1. A wireless power receiver configured to communicate with a wireless power transmitter for receiving electrical power therefrom, the wireless power receiver comprising:
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at least one non-transitory computer-readable medium storing a limit of the wireless power receiver and a sensitivity of the wireless power receiver; and circuitry configured to; transmit the limit of the wireless power receiver and the sensitivity of the wireless power receiver to the wireless power transmitter for the wireless power transmitter to determine a signal strength limit for the wireless power transmitter;
orreceive a scaling factor from the wireless power transmitter and determine a signal strength limit for the wireless power transmitter based upon the scaling factor, the limit of the wireless power receiver and the sensitivity of the wireless power receiver, and transmit the signal strength limit for the wireless power transmitter to the wireless power transmitter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method performed by a wireless power receiver, the method comprising:
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(A) storing a limit of the wireless power receiver and a sensitivity of the wireless power receiver; (B) transmitting the limit of the wireless power receiver and the sensitivity of the wireless power receiver to a wireless power transmitter for the wireless power transmitter to determine a signal strength limit for the wireless power transmitter;
or receiving a scaling factor from the wireless power transmitter and determining a signal strength limit for the wireless power transmitter based upon the scaling factor, the limit of the wireless power receiver and the sensitivity of the wireless power receiver, and transmitting the signal strength limit to the wireless power transmitter; and(C) receiving power wirelessly from the wireless power transmitter based upon the signal strength limit.
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10. A wireless power transmitter configured to communicate with a wireless power receiver for transmitting electrical power thereto, the wireless power transmitter comprising:
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at least one non-transitory computer-readable medium storing a scaling factor; and circuitry configured to limit a signal strength of the wireless power transmitter to a value determined based on the scaling factor, a limit of the wireless power receiver and a sensitivity of the wireless power receiver. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A method performed by a wireless power transmitter, the method comprising:
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storing a scaling factor, and limiting a signal strength of the wireless power transmitter to a value determined based on the scaling factor, a limit of a wireless power receiver and a sensitivity of the wireless power receiver.
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Specification