Wireless power transfer for furnishings and building elements
First Claim
1. A power transmitting apparatus for transferring wireless power to a receiver, comprising:
- a power source configured to generate a driving signal;
a transmit antenna coupled to the power source and configured to receive the driving signal and transfer a first level of power, via a wireless power field, to detect the receiver, and transfer a second level of power greater than the first level of power, via the wireless field, to the receiver based on detecting the receiver utilizing the first level of power the transmit antenna built into a furnishing;
a tuning capacitor configured to tune a resonant frequency of the transmit antenna;
a detector configured to detect a closed state of the furnishing and generate a detection signal; and
a controller, coupled to the detector and the power source, and configured to adjust a power output of the transmit antenna in response to the detection signal.
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Accused Products
Abstract
Exemplary embodiments are directed to wireless power transfer. A power transmitting device is attached to an existing furniture item or is embedded in a host furnishing. The power transmitting device includes a transmit antenna to wirelessly transfer power to a receive antenna by generating a near field radiation within a coupling-mode region. An amplifier applies a driving signal to the transmit antenna. A presence detector detects a presence of a receiver device within the coupling-mode region. The presence detector may also detect a human presence. An enclosed furnishing detector detects when the furnishing item is in a closed state. A power output may be adjusted in response to the closed state, the presence of a receiver device, and the presence of a human.
239 Citations
34 Claims
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1. A power transmitting apparatus for transferring wireless power to a receiver, comprising:
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a power source configured to generate a driving signal; a transmit antenna coupled to the power source and configured to receive the driving signal and transfer a first level of power, via a wireless power field, to detect the receiver, and transfer a second level of power greater than the first level of power, via the wireless field, to the receiver based on detecting the receiver utilizing the first level of power the transmit antenna built into a furnishing; a tuning capacitor configured to tune a resonant frequency of the transmit antenna; a detector configured to detect a closed state of the furnishing and generate a detection signal; and a controller, coupled to the detector and the power source, and configured to adjust a power output of the transmit antenna in response to the detection signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method of transmitting power, comprising:
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generating an electromagnetic field at a first level of power by a transmit antenna, the electromagnetic field having a region for detecting a receiver; generating the electromagnetic field at a second level of power greater than the first level of power based on detecting the receiver utilizing the first level of power, the electromagnetic field having a region for transferring power from the transmit antenna to the receiver, the transmit antenna configured to be built into a furnishing; tuning a resonant frequency of the transmit antenna; detecting a closed state of the furnishing; and adjusting a power output of the transmit antenna in response to the closed state of the furnishing. - View Dependent Claims (26, 27, 28, 29, 30)
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31. A wireless power transfer apparatus, comprising:
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a power source configured to generate a driving signal; means for generating an electromagnetic field at a first level of power, coupled to the power source to receive the driving signal, the electromagnetic field having a region for detecting a receiver; means for generating the electromagnetic field at a second level of power greater than the first level of power based on detecting the receiver utilizing the first level of power, the electromagnetic field having a region for transferring power to the receiver, the means for generating the electromagnetic field configured to be built into a furnishing; means for tuning a resonant frequency of the means for generating the electromagnetic field comprising at least one tuning capacitor; means for detecting a closed state of the furnishing; and means for adjusting the power output of the transmit antenna responsive to the closed state of the furnishing. - View Dependent Claims (32, 33, 34)
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Specification