Wireless power transfer for vehicles
First Claim
1. An apparatus for transferring wireless power to a receiver, comprising:
- a power source configured to generate a driving signal;
a transmit coil, coupled to the power source, and configured to receive the driving signal and to transmit the wireless power, via a wireless power field, within a region to the receiver, the transmit coil positioned in a compartment of a vehicle;
a tuning capacitor coupled to the power source and the transmit coil and configured to tune a resonant frequency of the transmit coil;
a detector configured to detect a closed state of the compartment and generate a signal indicative of the closed state; and
a controller operationally coupled to the detector and to the power source, the controller configured to adjust a power output of the power source in response to the 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 vehicle item or is embedded in a vehicle element. 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 may detect a presence of a receiver device within the coupling-mode region. The presence detector may also detect a human presence. An enclosed compartment detector may detect when the vehicle element 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.
263 Citations
30 Claims
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1. An apparatus for transferring wireless power to a receiver, comprising:
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a power source configured to generate a driving signal; a transmit coil, coupled to the power source, and configured to receive the driving signal and to transmit the wireless power, via a wireless power field, within a region to the receiver, the transmit coil positioned in a compartment of a vehicle; a tuning capacitor coupled to the power source and the transmit coil and configured to tune a resonant frequency of the transmit coil; a detector configured to detect a closed state of the compartment and generate a signal indicative of the closed state; and a controller operationally coupled to the detector and to the power source, the controller configured to adjust a power output of the power source in response to the 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)
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23. A method of transferring wireless power to a receiver, comprising:
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generating an electromagnetic field having a region for transferring the power from a transmit coil to the receiver, the transmit coil built into a component of a vehicle; tuning a resonant frequency of the transmit coil; detecting a closed state of the component to generate a signal indicative of the closed state; and adjusting a power output of the transmit coil in response to the signal. - View Dependent Claims (24, 25)
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26. An apparatus, comprising:
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a power source configured to generate a driving signal; means for generating an electromagnetic field, coupled to the power source, the electromagnetic field having a region for transferring power to a receiver, the means for generating the electromagnetic field built into a component of a vehicle; means for tuning a resonant frequency of the means for generating the electromagnetic field; means for detecting a closed state of the component to generate a signal indicative of the closed state; and means for adjusting the power output of the means for generating the electromagnetic field in response to the signal. - View Dependent Claims (27, 28, 29, 30)
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Specification