SYSTEMS AND METHODS FOR WIRELESS POWER TRANSFER
First Claim
1. An apparatus for providing wireless charging, the apparatus comprising:
- a magnetic segment of 2 or more tiles, each tile having at least one winding having at least one turn, each time having a core of high magnetic permeability material, the magnetic segment having at least a first group of one or more tiles having winding(s) oriented in a first direction and a second group of one or more tiles having winding(s) oriented in a direction different than the first direction; and
an inverter configured to power the windings of the tiles.
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Abstract
Systems and methods for wireless power transfer are disclosed. Primary windings generate magnetic fields which are inductively coupled to secondary windings to transfer power in a wireless manner. One embodiment includes a plurality of tiles of magnetic cores and windings for the primary windings. The tiles can be arranged in a magnetic segment with windings of tiles being orthogonal with respect to windings of adjacent tiles. For example, a winding of a first tile can be horizontal, and windings of adjacent tiles can be vertical. One embodiment further groups these magnetic segments into larger entities, wherein each magnetic segment can be independently activated. One embodiment includes a magnetic amplifier or an electronic device for secondary side control of power. This permits multiple devices to be powered or charged to be able to regulate power or charging independently from one another.
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Citations
32 Claims
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1. An apparatus for providing wireless charging, the apparatus comprising:
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a magnetic segment of 2 or more tiles, each tile having at least one winding having at least one turn, each time having a core of high magnetic permeability material, the magnetic segment having at least a first group of one or more tiles having winding(s) oriented in a first direction and a second group of one or more tiles having winding(s) oriented in a direction different than the first direction; and an inverter configured to power the windings of the tiles. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of providing wireless charging, the method comprising:
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generating an AC magnetic field from a magnetic segment, the magnetic segment comprising 2 or more tiles, each tile having at least one winding having at least one turn, each time having a core of high magnetic permeability material, the magnetic segment having at least a first group of one or more tiles having winding(s) oriented in a first direction and a second group of one or more tiles having winding(s) oriented in a direction different than the first direction; and generating AC current to power the windings of the tiles. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. An apparatus for receiving wireless power transfer, the apparatus comprising:
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a winding configured to inductively couple power in a wireless manner; a regulating device disposed in a current path of the winding; a rectifier circuit configured to rectify alternating or pulsing current from the winding; and a control circuit configured to control operation of the regulating device for regulation of at least one of voltage, current, or power received from the winding. - View Dependent Claims (21, 22, 23, 24, 25, 26)
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27. A method for receiving wireless power transfer, the method comprising:
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wirelessly inductively coupling to a source of power, thereby generating an internal source of alternating or pulsing current; controlling a regulating device disposed in a current path of the alternating or pulsing current to regulate at least one of power, voltage, or current; and rectifying the alternating current. - View Dependent Claims (28, 29, 30, 31, 32)
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Specification