WIRELESS NON-RADIATIVE ENERGY TRANSFER
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Accused Products
Abstract
Described herein are embodiments of a source high-Q resonator, optionally coupled to an energy source, a second high-Q resonator, optionally coupled to an energy drain that may be located a distance from the source resonator. A third high-Q resonator, optionally coupled to an energy drain that may be located a distance from the source resonator. The source resonator and at least one of the second resonator and third resonator may be coupled to transfer electromagnetic energy from said source resonator to said at least one of the second resonator and third resonator.
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Citations
44 Claims
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1-20. -20. (canceled)
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21. An apparatus for a wireless power system for providing power to a vehicle, the wireless power system including a device resonator and a load coupled to the device resonator to receive power from the device resonator and for powering the vehicle, the device resonator having a resonant frequency ω
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2, an intrinsic loss rate Γ
2, and capable of storing electromagnetic energy with an intrinsic quality factor Q2=ω
2/(2Γ
2)>
200, the device resonator comprising at least one loop of conductive material and further comprising a capacitance,the apparatus comprising; a source resonator and a power supply coupled to the source resonator to provide power to the source resonator, the source resonator having a resonant frequency ω
1, an intrinsic loss rate Γ
1, and capable of storing electromagnetic energy with an intrinsic quality factor Q1=ω
1/(2Γ
1)>
200, the source resonator comprising at least one loop of conductive material and further comprising a capacitance,wherein the source resonator and the device resonator are configured to resonantly and wirelessly couple electromagnetic power from the source resonator to the device resonator using non-radiative electromagnetic induction having an energy transfer rate κ
, and wherein the intrinsic loss rates satisfy κ
/√
{square root over (Γ
1Γ
2)}>
5 over a range of distances D, andwherein the source resonator and the device resonator each have a characteristic size, and the characteristic size of the source resonator is not more than 100/30 times the characteristic size of the device resonator.
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2, an intrinsic loss rate Γ
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22. An apparatus for use in a wireless power system for providing for providing power to a vehicle, the wireless power system including a source resonator and a power supply coupled to the source resonator to provide power to the source resonator, the source resonator having a resonant frequency ω
-
1, an intrinsic loss rate Γ
1, and capable of storing electromagnetic energy with an intrinsic quality factor Q1=ω
1/(2Γ
1)>
200,the apparatus comprising; a device resonator and a load coupled to the device resonator to receive power from the device resonator and for powering the vehicle, the device resonator having a resonant frequency ω
2, an intrinsic loss rate Γ
2, and capable of storing electromagnetic energy with an intrinsic quality factor Q2=ω
2/(2Γ
2)>
200, the device resonator comprising at least one loop of conductive material and further comprising a capacitance,wherein the source resonator and the device resonator are configured to resonantly and wirelessly couple electromagnetic power from the source resonator to the device resonator using non-radiative electromagnetic induction having an energy transfer rate κ
, and wherein the intrinsic loss rates satisfy κ
/√
{square root over (Γ
1Γ
2)}>
5 over a range of distances D, andwherein the source resonator and the device resonator each have a characteristic size, and the characteristic size of the source resonator is not more than 100/30 times the characteristic size of the device resonator. - View Dependent Claims (23, 24, 25, 26, 27)
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1, an intrinsic loss rate Γ
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28. A method for providing power wirelessly to a vehicle, wherein the vehicle is configured for use with a source resonator and a power supply coupled to the source resonator to provide power to the source resonator, the source resonator having a resonant frequency ω
-
1, an intrinsic loss rate Γ
1, and capable of storing electromagnetic energy with an intrinsic quality factor Q1=ω
1/(2Γ
1)≥
200, the method comprising;providing the vehicle with a device resonator and a load coupled to the device resonator to receive power from the device resonator and provide power to the vehicle, the device resonator having a resonant frequency ω
2, an intrinsic loss rate Γ
2, and capable of storing electromagnetic energy with an intrinsic quality factor Q2=ω
2/(2Γ
2)>
200, the device resonator comprising at least one loop of conductive material and further comprising a capacitance, wherein the device resonator is spaced from the source resonator and configured to move freely relative to the source resonator over a range of distances D between the source resonator and the device resonator; andresonantly and wirelessly receiving electromagnetic power at the device resonator from the source resonator using non-radiative electromagnetic induction having an energy transfer rate κ
, wherein the intrinsic loss rates satisfy κ
/√
{square root over (Γ
1Γ
2)}>
5 over the range of distances D,wherein the source resonator and the device resonator each have a characteristic size, and the characteristic size of the source resonator is not more than 100/30 times the characteristic size of the device resonator. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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1, an intrinsic loss rate Γ
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44. A method for providing power wirelessly to a vehicle, wherein the vehicle is configured for use with a source resonator and a power supply coupled to the source resonator to provide power to the source resonator, the source resonator having a resonant frequency ω
-
1, an intrinsic loss rate Γ
1, and capable of storing electromagnetic energy with an intrinsic quality factor Q1=ω
1/(2Γ
1)>
200, the method comprising;providing the source resonator coupled to the power supply; providing the vehicle with a device resonator and a load coupled to the device resonator to receive power from the device resonator and provide power to the vehicle, the device resonator having a resonant frequency (02, an intrinsic loss rate Γ
2, and capable of storing electromagnetic energy with an intrinsic quality factor Q2=ω
2/(2Γ
2)>
200, the device resonator comprising at least one loop of conductive material and further comprising a capacitance, wherein the device resonator is spaced from the source resonator and configured to move freely relative to the source resonator over a range of distances D between the source resonator and the device resonator; andresonantly and wirelessly receiving electromagnetic power at the device resonator from the source resonator using non-radiative electromagnetic induction having an energy transfer rate κ
, wherein the intrinsic loss rates satisfy κ
/√
{square root over (Γ
1Γ
2)}>
5 over the range of distances D.
-
1, an intrinsic loss rate Γ
Specification