WIRELESS POWER TRANSFER FOR LOW POWER DEVICES
First Claim
Patent Images
1. A charging device, comprising:
- at least one charging region configured to transmit power to one or more electronic devices positioned therein; and
a timing device configured for tracking a time duration of a charging period;
wherein the charging device is configured to deactivate transmission of power from the at least one charging region when the time duration of the charging period is substantially equal to a desired time duration.
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Abstract
Exemplary embodiments are directed to wireless power transfer. A method of operating a wireless receiver may comprise receiving wireless power with a receive antenna and conveying power from the receive antenna to a chargeable element. The method may further include electrically isolating the receive antenna from the chargeable element upon detecting that the chargeable element is fully-charged.
333 Citations
29 Claims
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1. A charging device, comprising:
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at least one charging region configured to transmit power to one or more electronic devices positioned therein; and a timing device configured for tracking a time duration of a charging period; wherein the charging device is configured to deactivate transmission of power from the at least one charging region when the time duration of the charging period is substantially equal to a desired time duration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A wireless receiver, comprising:
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a receive antenna selectively coupled to a chargeable element and configured to receive wireless power from a wireless antenna; and a switching device operably coupled between the receive antenna and the chargeable element and configured to electrically isolate the receive antenna from the chargeable element. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A chargeable device having a wireless receiver coupled thereto, the wireless receiver, comprising:
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a receive antenna selectively coupled to a chargeable element via a switching device and configured to receive wireless power from a wireless antenna; and a controller configured to determine a charging state of the chargeable element; wherein the switching device is configured for disconnecting the receive antenna from the chargeable element upon determining that the chargeable element is in a fully charged state.
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20. A method, comprising:
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receiving wireless power with a receive antenna; conveying power from the receive antenna to a chargeable element; and electrically isolating the receive antenna from the chargeable element upon detecting that the chargeable element is fully-charged. - View Dependent Claims (21, 22, 23)
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24. A wireless power device, the device comprising:
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means for receiving wireless power with a wireless receive antenna; means for conveying power to a chargeable element; and means for electrically isolating the receive antenna from the chargeable element upon detecting that the chargeable element is fully charged.
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25. A method, comprising:
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transmitting wireless power from the charging device for a time duration equal to the desired charging period time duration; and discontinuing the transmission of wireless power after a time duration equal to the desired charging period time duration. - View Dependent Claims (26, 27, 28)
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29. A wireless power device, the device comprising:
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means for transmitting wireless power from the charging device for a time duration equal to the desired charging period time duration; and means for discontinuing the transmission of wireless power after a time duration equal to the desired charging period time duration.
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Specification