Back to results
US 9,287,732 B2Granted
Variable wireless power transmission
AssigneeQUALCOMM Incorporated
InventorFrancesco Carobolante
Life of this patent
Estimating the term…
Abstract
Exemplary embodiments are directed to variable power wireless power transmission. A method may include conveying wireless power to a device at a first power level during a time period. The method may further include conveying wireless power to one or more other devices at a second, different power level during another time period.
Claims20
A wireless charging device, comprising:
- a transmit circuit comprising at least one coil, the transmit circuit configured to wirelessly charge one or more chargeable devices via a wireless field;
- a controller circuit configured to:
- determine a value indicative of a magnitude of a load presented to the transmit circuit by the one or more chargeable devices;
- cause the transmit circuit to transmit power at a first power level to charge a first chargeable device of the one or more chargeable devices during a first time period;
- cause the transmit circuit to transmit power at a second power level to charge at least one second chargeable device of the one or more chargeable devices during a second time period different than the first time period, the first power level higher than the second power level when the magnitude of the load presented to the transmit circuit by the first chargeable device is larger than the magnitude of the load presented to the transmit circuit by the at least one second chargeable device;
- and
- selectively determine whether to cause the transmit circuit to transmit at the first power level or the second power level based at least in part on the value indicative of the magnitude of the load presented to the transmit circuit.
4 more elements
A method of charging one or more chargeable devices at a wireless charging device via a wireless field, comprising:
- determining a value indicative of a magnitude of a load presented to a wireless charging device by the one or more chargeable devices;
- causing power to be wirelessly transmitted at a first power level to charge a first chargeable device of the one or more chargeable devices during a first time period;
- causing power to be wirelessly transmitted at a second power level to charge at least one second chargeable device of the one or more chargeable devices during a second time period different than the first time period, the first power level higher than the second power level when the magnitude of the load presented to the wireless charging device by the first chargeable device is larger than the magnitude of the load presented to the transmit circuit by the at least one second chargeable device;
- and
- selectively determining whether to cause power to be wirelessly transmitted at the first power level or the second power level based at least in part on the value indicative of the magnitude of the load presented to the wireless charging device.
2 more elements
A wireless charging device for charging one or more devices at a wireless charging device, comprising:
- means for wirelessly charging the one or more chargeable devices via a wireless field;
- and
- means for determining a value indicative of a magnitude of a load presented to the wireless charging means by the one or more chargeable devices;
- means for causing the wireless charging means to transmit power at a first power level to charge a first chargeable device of the one or more chargeable devices during a first time period;
- means for causing the wireless charging means to transmit power at a second power level to charge at least one second chargeable device of the one or more chargeable devices during a second time period different from the first time period, the first power level higher than the second power level when the magnitude of the load presented to the transmit circuit by the first chargeable device is larger than the magnitude of the load presented to the wireless charging means by the at least one second chargeable device;
- and
- means for selectively determining whether to cause the wireless charging means to transmit at the first power level or the second power level based at least in part on the value indicative of the magnitude of the load presented to the wireless charging means.
4 more elements
Dependencies are inferred from the claim text.