WIRELESS POWER TRANSFER
First Claim
1. A system for wireless transmission of power to a battery-operated device, the system comprising:
- a power receiving apparatus comprising at least one receiving resonator and a housing dimensioned to engage with a battery compartment of a battery-operated device; and
a power transmitting apparatus comprising;
a first pair of source resonators spaced from one another, wherein each source resonator in the first pair comprises a loop of conducting material surrounding a common first axis;
a second pair of source resonators spaced from one another, wherein each source resonator in the second pair comprises a loop of conducting material surrounding a common second axis perpendicular to the first axis;
at least one additional source resonator comprising a loop of conducting material surrounding a common third axis perpendicular to the first and second axes; and
a controller coupled to the first and second pairs of source resonators and to the at least one additional resonator and configured to provide non-radiative wireless power transfer from the power transmitting apparatus to the power receiving apparatus by alternately activating in sequence;
the first pair of source resonators and the second pair of source resonators;
the first pair of source resonators and the at least one additional source resonator; and
the second pair of source resonators and the at least one additional source resonator.
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Accused Products
Abstract
Methods and systems for wireless transmission of power to a battery-operated device include a power receiving apparatus featuring at least one receiving resonator and a housing dimensioned to engage with a battery compartment of a battery-operated device, and a power transmitting apparatus including: a first pair of spaced source resonators, where each source resonator in the first pair features a loop of conducting material surrounding a common first axis; a second pair of spaced source resonators, where each source resonator in the second pair features a loop of conducting material surrounding a common second axis different from the first axis; and a controller coupled to the first and second pairs of source resonators and configured to provide non-radiative wireless power transfer from the power transmitting apparatus to the power receiving apparatus by alternately activating the first and second pairs of source resonators.
361 Citations
29 Claims
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1. A system for wireless transmission of power to a battery-operated device, the system comprising:
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a power receiving apparatus comprising at least one receiving resonator and a housing dimensioned to engage with a battery compartment of a battery-operated device; and a power transmitting apparatus comprising; a first pair of source resonators spaced from one another, wherein each source resonator in the first pair comprises a loop of conducting material surrounding a common first axis; a second pair of source resonators spaced from one another, wherein each source resonator in the second pair comprises a loop of conducting material surrounding a common second axis perpendicular to the first axis; at least one additional source resonator comprising a loop of conducting material surrounding a common third axis perpendicular to the first and second axes; and a controller coupled to the first and second pairs of source resonators and to the at least one additional resonator and configured to provide non-radiative wireless power transfer from the power transmitting apparatus to the power receiving apparatus by alternately activating in sequence; the first pair of source resonators and the second pair of source resonators; the first pair of source resonators and the at least one additional source resonator; and the second pair of source resonators and the at least one additional source resonator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A device for wireless transmission of power to a power receiving apparatus comprising at least one receiving resonator, the device comprising:
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a first pair of source resonators spaced from one another, wherein each source resonator in the first pair comprises a loop of conducting material surrounding a common first axis; a second pair of source resonators spaced from one another, wherein each source resonator in the second pair comprises a loop of conducting material surrounding a common second axis different from the first axis; and a controller coupled to the first and second pairs of source resonators and configured to provide non-radiative wireless power transfer from the device to the power receiving apparatus by alternately; activating the first pair of source resonators to transfer power from the first pair of source resonators to the power receiving apparatus; and activating the second pair of source resonators to transfer power from the second pair of source resonators to the power receiving apparatus. - View Dependent Claims (20, 21, 22, 23, 24)
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25. A method for wireless transmission of power to a power receiving apparatus, the method comprising:
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(a) during a first time period, applying a voltage to a first pair of source resonators spaced from one another, wherein each source resonator in the first pair comprises a loop of conducting material surrounding a common first axis, and applying a voltage to a second pair of source resonators spaced from one another, wherein each source resonator in the second pair comprises a loop of conducting material surrounding a common second axis perpendicular to the first axis; (b) during a second time period, applying a voltage to the first pair of source resonators and applying a voltage to at least one additional source resonator comprising a loop of conducting material surrounding a common third axis perpendicular to the first and second axes; (c) during a third time period, applying a voltage to the second pair of source resonators and applying a voltage to the at least one additional source resonator; and (d) repeating (a)-(c) to transmit power wirelessly from the first and second pairs of source resonators and the at least one additional source resonator to a receiving resonator in the power receiving apparatus. - View Dependent Claims (26, 27, 28, 29)
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Specification