METHOD AND APPARATUS FOR WIRELESS POWER TRANSMISSION
First Claim
1. A system for transmitting power comprising:
- a first planar array of resonant coils configured to transmit power via a magnetic field for charging one or more portable electronic devices having a receiver, the array comprising at least two regions with each region including plural coils, wherein the regions are configured to be selectively activated or deactivated; and
a controller electrically connected to the regions, the controller configured to selectively activate or deactivate one of the at least two regions in response to the presence of a receiver in the magnetic field area associated with the one region.
2 Assignments
0 Petitions
Accused Products
Abstract
Embodiments of the invention relate to a method and system for transferring power wirelessly to electronic devices. The system can utilize magnetic coupling between two coils at close proximity to transfer sufficient power to charge an electronic device. Embodiments of the invention pertain to an array of spiral coils that can be used to transmit power for transfer to receiver coils. Potential applications of this technology include charging consumer electronic devices (cell phones, laptops, PDAs, etc), developing hermetically sealed devices for extreme environments, and less invasive transcutaneous energy transfer (TET) systems. Various embodiments of the subject system can be referred to as PowerPad system. Embodiments can incorporate one or more of the following: planar inductors, PCB transformers, and very high frequency power supplies. Embodiments of the invention also pertain to planar inductors having characteristics that allow the production of even magnetic field, as well as systems that incorporate such planar inductors.
5 Citations
20 Claims
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1. A system for transmitting power comprising:
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a first planar array of resonant coils configured to transmit power via a magnetic field for charging one or more portable electronic devices having a receiver, the array comprising at least two regions with each region including plural coils, wherein the regions are configured to be selectively activated or deactivated; and a controller electrically connected to the regions, the controller configured to selectively activate or deactivate one of the at least two regions in response to the presence of a receiver in the magnetic field area associated with the one region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of transmitting power comprising:
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detecting presence of one or more portable electronic devices having a receiver in a magnetic field area of one of a plurality of regions of a first planar array of resonant coils, each region including a plurality of the resonant coils; and activating transmission of power via the magnetic field of the one of the plurality of regions for charging the portable electronic device based on the presence of the portable electronic device. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A system for transmitting power comprising:
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means for detecting presence of one or more portable electronic devices having a receiver in a magnetic field area of one of a plurality of regions of a first planar array of resonant coils, each region including a plurality of the resonant coils; and means for activating transmission of power from the one of the plurality of regions via the magnetic field for charging the portable electronic device based on the presence of the portable electronic device.
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Specification