SYSTEMS AND METHODS FOR ELECTRIC VEHICLE INDUCTION COIL ALIGNMENT
First Claim
1. A method of receiving wireless power, comprising:
- detecting a transmission signal in a wireless power transmission, the transmission signal comprising periodic variations between a first frequency and a second frequency; and
determining a phase of a base system induction coil signal based on the detected transmission signal.
2 Assignments
0 Petitions
Accused Products
Abstract
Systems and methods in accordance with particular embodiments provide for alignment of an electric vehicle induction coil with a base system induction coil through a determination of the phase of a base system induction coil current signal. In certain embodiments, an electric vehicle induction coil that receives a transmission signal can be determined to be in greater alignment with a base system induction coil that transmits the transmission signal as the phases of the current signals at the base system induction coil and the electric vehicle induction coil converge. One embodiment includes a method of receiving wireless power, including detecting a transmission signal in a wireless power transmission, the transmission signal comprising periodic variations between a first frequency and a second frequency. The method further includes determining a phase of a base system induction coil signal based on the detected transmission signal.
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Citations
29 Claims
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1. A method of receiving wireless power, comprising:
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detecting a transmission signal in a wireless power transmission, the transmission signal comprising periodic variations between a first frequency and a second frequency; and determining a phase of a base system induction coil signal based on the detected transmission signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A wireless power receiver, comprising:
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an electric vehicle induction coil configured to receive a wireless power transmission at a level sufficient to charge an electric vehicle; a detector configured to detect a transmission signal in the wireless power transmission, the transmission signal comprising periodic variations between a first frequency and a second frequency; and an electric vehicle controller configured to determine a phase of a base system induction coil signal based on the detected transmission signal. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A method of transmitting wireless power, comprising:
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generating a base system induction coil signal; transmitting the base system induction coil signal as a transmission signal via a base system induction coil, the transmission signal configured for wireless power transmission to a wireless power receiver, the transmission signal comprising periodic variations between a first frequency and a second frequency indicative of a phase of the base system induction coil. - View Dependent Claims (25, 26)
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27. A wireless power transmitter, comprising:
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a base system transmit circuit configured to generate a base system induction coil signal; and a base system induction coil configured to transmit the base system induction coil signal as a transmission signal, the transmission signal configured for wireless power transmission to a wireless power receiver, the transmission signal comprising periodic variations between a first frequency and a second frequency indicative of a phase of the base system induction coil. - View Dependent Claims (28, 29)
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Specification