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 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 pair of source resonators to transfer power from the first pair of source resonators to the at least one receiving resonator; and
activating the second pair of source resonators to transfer power from the second pair of source resonators to the at least one receiving 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.
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Citations
60 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 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 pair of source resonators to transfer power from the first pair of source resonators to the at least one receiving resonator; and activating the second pair of source resonators to transfer power from the second pair of source resonators to the at least one receiving resonator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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48. 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 (49, 50, 51, 52, 53, 54)
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55. A method for wireless transmission of power to a power receiving apparatus, the method comprising:
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applying an oscillating 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, to transfer power from the first pair of source resonators to a receiving resonator in the power receiving apparatus; and applying an oscillating 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 different from the first axis, to transfer power from the second pair of source resonators to the receiving resonator, wherein the oscillating voltage applied to the first pair of source resonators differs in phase from the oscillating voltage applied to the second pair of source resonators. - View Dependent Claims (56, 57, 58, 59, 60)
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Specification