WIRELESS POWER TRANSFER SYSTEM AND METHOD THEREOF
First Claim
1. A wireless power transfer system, comprising:
- a source coil coupled to a power supplying device; and
a receiver coil coupled to a power receiving device,wherein when the source coil is energized by the power supplying device and the receiver coil is positioned within a predetermined range of distances from the source coil, the receiver coil is inductively coupled to the source coil at a predefined magnetic resonance frequency to wirelessly transfer power from the power supplying device to the power receiving device, the power receiving device measures a voltage level at the receiver coil and sends information pertaining to the voltage level to the power supplying device, and the power supplying device adjusts voltage at the source coil based on comparing the voltage level with a predetermined threshold level determined for the power receiving device.
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Accused Products
Abstract
A wireless power transfer system and method is provided. The system includes a source coil that is coupled to a power supplying device and a receiver coil that is coupled to a power receiving device. In operation, when the source coil is energized by the power supplying device and the receiver coil is positioned within a predetermined range of distances from the source coil, the receiver coil is inductively coupled to the source coil at a predefined magnetic resonance frequency to wirelessly transfer power from the power supplying device to the power receiving device. The power receiving device measures a voltage level at the receiver coil and sends information pertaining to the voltage level to the power supplying device. The power supplying device adjusts voltage at the source coil based on comparing the voltage level with a predetermined threshold determined for the power receiving device.
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Citations
20 Claims
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1. A wireless power transfer system, comprising:
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a source coil coupled to a power supplying device; and a receiver coil coupled to a power receiving device, wherein when the source coil is energized by the power supplying device and the receiver coil is positioned within a predetermined range of distances from the source coil, the receiver coil is inductively coupled to the source coil at a predefined magnetic resonance frequency to wirelessly transfer power from the power supplying device to the power receiving device, the power receiving device measures a voltage level at the receiver coil and sends information pertaining to the voltage level to the power supplying device, and the power supplying device adjusts voltage at the source coil based on comparing the voltage level with a predetermined threshold level determined for the power receiving device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A portable radio system, comprising:
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a limited power supply source; a radio frequency (RF) power amplifier coupled to the limited power supply source for enabling long range wireless communication; a source coil coupled to the limited power supply source; a short range wireless communication means; and a controller coupled to the short range wireless communication means and the source coil, the source coil being energized by the limited power supply source to provide wireless power transfer capability in response to external voltage information being received at the short range wireless communication means. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A method for wirelessly transferring power from a power supplying device to a power receiving device, the method comprising:
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energizing a source coil of the power supplying device to inductively couple a receiver coil of the power receiving device at a predefined magnetic resonance frequency; measuring a voltage level at the receiver coil when the power is transferred from the power supplying device to the power receiving device through the inductively coupling between the source coil and the receiver coil; transmitting via a wireless communication means, information pertaining to the measured voltage level to the power supplying device; comparing the measured voltage level with a predetermined threshold level determined for the power receiving device; and controlling the power supplying device to adjust voltage at the source coil based on the comparison. - View Dependent Claims (19, 20)
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Specification