ANTENNA ALIGNMENT AND VEHICLE GUIDANCE FOR WIRELESS CHARGING OF ELECTRIC VEHICLES
First Claim
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1. An apparatus for receiving wireless power, the apparatus comprising:
- a sensor coupled to a wireless power receive antenna, the sensor comprising;
a core;
a first coil wound about the core, the first coil located in a first plane;
a second coil wound about the core, the second coil located in a second plane that is different than the first plane; and
a third coil wound about the core, the third coil located in a third plane that is different than the first and second planes, the sensor configured to determine at least two vector components of an electromagnetic field at a particular point; and
a processor configured to determine, based on the at least two vector components, a direction of a source of the electromagnetic field with respect to the sensor and a distance to the source of the electromagnetic field from the sensor.
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Abstract
Embodiments are directed to a wireless power antenna alignment systems and methods for electric vehicles. A system may include a sensor configured to detect the strength of an electromagnetic field in multiple dimensions and a processor configured to determine at least one of a direction and a position of a transmitted beacon signal based on an output of the sensor.
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Citations
27 Claims
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1. An apparatus for receiving wireless power, the apparatus comprising:
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a sensor coupled to a wireless power receive antenna, the sensor comprising; a core; a first coil wound about the core, the first coil located in a first plane; a second coil wound about the core, the second coil located in a second plane that is different than the first plane; and a third coil wound about the core, the third coil located in a third plane that is different than the first and second planes, the sensor configured to determine at least two vector components of an electromagnetic field at a particular point; and a processor configured to determine, based on the at least two vector components, a direction of a source of the electromagnetic field with respect to the sensor and a distance to the source of the electromagnetic field from the sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for receiving power via an electromagnetic filed at a position, the method comprising:
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sensing a first signal indicative of a strength of the electromagnetic field, the first signal corresponding to a first plane of the electromagnetic field at the position; sensing a second signal indicative of a strength of the electromagnetic field, the second signal corresponding to a second plane of the electromagnetic field at the position, the second plane being different than the first plane; sensing a third signal indicative of a strength of the electromagnetic field, the third signal corresponding to a third plane of the electromagnetic field at the position, the third plane being different than the first plane and the second plane; determining at least two vector components of the electromagnetic field at the position based on the first signal, the second signal, and the third signal; and determining, based on the at least two vector components, a direction of the source of electromagnetic field with respect to the sensor and a distance to a source of the electromagnetic field from the sensor. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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23. An apparatus for receiving power via an electromagnetic filed at a position, the apparatus comprising:
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means for sensing a first signal indicative of a strength of the electromagnetic field, the first signal corresponding to a first plane of an electromagnetic field at the position; means for sensing a second signal indicative of a strength of the electromagnetic field, the second signal corresponding to a second plane of the electromagnetic field at the position, the second plane being different than the first plane; means for sensing a third signal indicative of a strength of the electromagnetic field, the third signal corresponding to a third plane of the electromagnetic field at the position, the third plane being different than the first plane and the second plane; means for determining at least two vector components of the electromagnetic field at the position based on the first signal, the second signal, and the third signal; and means for determining, based on the at least two vector components, a direction of the source of electromagnetic field with respect to a sensor and a distance to the source of the electromagnetic field from the sensor. - View Dependent Claims (24, 25, 26, 27)
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Specification