WIRELESS POWER TRANSMITTER WITH A PLURALITY OF MAGNETIC OSCILLATORS
First Claim
1. A power transmitter configured to wirelessly transfer power to at least one power receiver, the power transmitter comprising:
- at least one excitation circuit configured to generate a time-varying first magnetic field in response to a time-varying electric current flowing through the at least one excitation circuit, the time-varying first magnetic field having an excitation frequency; and
a plurality of magnetic oscillators, each magnetic oscillator of the plurality of magnetic oscillators having a mechanical resonant frequency substantially equal to the excitation frequency, the plurality of magnetic oscillators configured to generate a time-varying second magnetic field in response to the first magnetic field.
1 Assignment
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Accused Products
Abstract
A power transmitter is configured to wirelessly transfer power to at least one power receiver. The power transmitter includes at least one excitation circuit configured to generate a time-varying first magnetic field in response to a time-varying electric current flowing through the at least one excitation circuit. The time-varying first magnetic field has an excitation frequency. The power transmitter further includes a plurality of magnetic oscillators. Each magnetic oscillator of the plurality of magnetic oscillators has a mechanical resonant frequency substantially equal to the excitation frequency. The plurality of magnetic oscillators is configured to generate a time-varying second magnetic field in response to the first magnetic field.
16 Citations
29 Claims
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1. A power transmitter configured to wirelessly transfer power to at least one power receiver, the power transmitter comprising:
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at least one excitation circuit configured to generate a time-varying first magnetic field in response to a time-varying electric current flowing through the at least one excitation circuit, the time-varying first magnetic field having an excitation frequency; and a plurality of magnetic oscillators, each magnetic oscillator of the plurality of magnetic oscillators having a mechanical resonant frequency substantially equal to the excitation frequency, the plurality of magnetic oscillators configured to generate a time-varying second magnetic field in response to the first magnetic field. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of transmitting power wirelessly, the method comprising:
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generating a time-varying first magnetic field having an excitation frequency; and generating a time-varying second magnetic field by applying the first magnetic field to a plurality of magnetic oscillators, each magnetic oscillator of the plurality of magnetic oscillators having a mechanical resonant frequency substantially equal to the excitation frequency. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A power transmitter configured to wirelessly transfer power to at least one power receiver, the power transmitter comprising:
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means for generating a time-varying first magnetic field having an excitation frequency; and means for generating a time-varying second magnetic field in response to the time-varying first magnetic field. - View Dependent Claims (20, 21)
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22. A power receiver configured to wirelessly receive power from at least one power transmitter, the power receiver comprising:
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at least one circuit configured to generate a time-varying electric current flowing through the at least one circuit in response to a time-varying first magnetic field, the time-varying first magnetic field having a frequency; and a plurality of magnetic oscillators, each magnetic oscillator of the plurality of magnetic oscillators having a mechanical resonant frequency substantially equal to the frequency, the plurality of magnetic oscillators configured to generate the time-varying first magnetic field in response to a time-varying second magnetic field, wherein the plurality of magnetic oscillators is arranged in a three-dimensional array comprising; at least one first plane comprising a first set of magnetic oscillators of the plurality of magnetic oscillators, each magnetic oscillator of the first set of magnetic oscillators having a magnetic moment pointing in a first direction, the first set of magnetic oscillators having a first summed magnetic moment comprising a time-varying component and a time-invariant component; and at least one second plane comprising a second set of magnetic oscillators of the plurality of magnetic oscillators, each magnetic oscillator of the second set of magnetic oscillators having a magnetic moment pointing in a second direction, the second set of magnetic oscillators having a second summed magnetic moment comprising a time-varying component and a time-invariant component, wherein the time-invariant component of the first summed magnetic moment and the time-invariant component of the second summed magnetic moment have substantially equal magnitudes and point in substantially opposite directions. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29)
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Specification