Wireless power receiver system
First Claim
1. A wireless power receiver, the wireless power receiver configured to receive wireless power from a wireless power supply, the wireless power receiver comprising:
- a power output for electrically coupling the wireless power receiver to a remote device;
a principle receiver circuit having a tank circuit electrically coupled to said power output and a switch connected across opposite ends of said tank circuit;
a supplemental receiver circuit having an inductor electrically coupled to said power output, wherein said principle receiver circuit and said supplemental receiver circuit are electrically coupled in parallel to said power output; and
a controller configured to selectively operate said switch in an open mode in which power induced in said principle receiver circuit tank circuit by the wireless power supply is delivered to said power output via said electrical coupling between said principle receiver circuit and said power output and in a closed mode in which said switch creates a closed resonant loop in said principle receiver circuit tank circuit, whereby said principle receiver circuit functions as a resonator that inductively couples power induced in said principle receiver circuit tank circuit by the wireless power supply to said supplemental receiver circuit, which delivers power to said power output via said electrical coupling between said supplemental receiver circuit and said power output;
wherein said principle receiver circuit, said supplemental receiver circuit, and said controller are located remote from the wireless power supply.
2 Assignments
0 Petitions
Accused Products
Abstract
A wireless power receiver capable of receiving wireless power from close-coupled and mid-range wireless power supplies. The wireless power receiver includes a principal and supplemental receiver circuits. The principle receiver circuit is adjustable to operate in a close-coupled mode or a resonator mode. In close-coupled mode, the principle receiver circuit is coupled to the power input of a remote device and functions as the principle power source. In resonator-mode, the principle power circuit is electrically disconnected/isolated from the remote device and forms a closed resonant loop to function as a resonator that amplifies an electromagnetic field from a mid-range wireless power supply. The supplemental receiver circuit is coupled to the power input of the remote device and is configured to receive wireless power from the resonator and function as the power source when the principle receiver circuit is in the resonator mode.
20 Citations
36 Claims
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1. A wireless power receiver, the wireless power receiver configured to receive wireless power from a wireless power supply, the wireless power receiver comprising:
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a power output for electrically coupling the wireless power receiver to a remote device; a principle receiver circuit having a tank circuit electrically coupled to said power output and a switch connected across opposite ends of said tank circuit; a supplemental receiver circuit having an inductor electrically coupled to said power output, wherein said principle receiver circuit and said supplemental receiver circuit are electrically coupled in parallel to said power output; and a controller configured to selectively operate said switch in an open mode in which power induced in said principle receiver circuit tank circuit by the wireless power supply is delivered to said power output via said electrical coupling between said principle receiver circuit and said power output and in a closed mode in which said switch creates a closed resonant loop in said principle receiver circuit tank circuit, whereby said principle receiver circuit functions as a resonator that inductively couples power induced in said principle receiver circuit tank circuit by the wireless power supply to said supplemental receiver circuit, which delivers power to said power output via said electrical coupling between said supplemental receiver circuit and said power output; wherein said principle receiver circuit, said supplemental receiver circuit, and said controller are located remote from the wireless power supply. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A wireless power receiver, the wireless power receiver configured to receive wireless power from a wireless power supply being at least one of close-coupled and mid-range, the wireless power receiver comprising:
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a power output for electrically coupling the wireless power receiver to a remote device; a first receiver circuit having a tank circuit, said first circuit having a close-coupled configuration in which said tank circuit is electrically coupled to said power output and a resonator configuration in which said tank circuit is effectively electrically disconnected/isolated from said power output and forms a closed resonant loop; and a second receiver circuit having an inductor electrically coupled to said power output, said second receiver circuit configured to couple with said closed resonant loop, wherein said first receiver circuit and said second receiver circuit are electrically coupled in parallel to said power output; wherein said first receiver circuit and said second receiver circuit are located remote from the wireless power supply. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A method for operating a wireless power receiver, the wireless power receiver configured to receive wireless power from a wireless power supply, the method comprising the steps of:
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providing a power output for electrically coupling the wireless power receiver to a remote device; providing a first receiver circuit remote from the wireless power supply, the first receiver circuit capable of being configured to operate as a power supply circuit in close-coupled mode and as a resonator in mid-range mode; providing a second receiver circuit remote from the wireless power supply, the second receiver circuit capable of operating as a power supply circuit in mid-range mode, the second receiver circuit tuned to efficiently couple with the first receiver circuit when the first receiver circuit is configured to operate as the resonator, wherein said first receiver circuit and said second receiver circuit are electrically coupled in parallel to the power output; determining whether a wireless power supply is a close-coupled wireless power supply or a mid-range wireless power supply; upon a determination that the wireless power supply is a close-coupled wireless power supply, configuring the first receiver circuit to operate as a power supply circuit; and upon a determination that the wireless power supply is a mid-range wireless power supply, configuring the first receiver circuit to operate as a resonator. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36)
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Specification