Inductive battery charger system with primary transformer windings formed in a multi-layer structure
First Claim
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1. A power system comprising:
- a planar surface adapted to receive an electronic device to be powered;
a primary power circuit comprising a plurality of transformer windings formed in a multilayer structure comprising at least two layers, each of the transformer windings being substantially parallel to the planar surface, a first layer comprising a plurality of the transformer windings, a transformer winding of a second layer being offset relative to a transformer winding of the first layer; and
an electromagnetic shield on a side of the primary power circuit opposite from the planar surface.
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Abstract
There is provided a power system designed to enable electronic devices to be powered. The system includes a planar surface on which a device to be powered is placed. Within the power system and substantially parallel to the planar surface are multiple primary transformer windings formed in a multi-layer structure that couple energy inductively to a secondary winding formed in the device to be powered. A winding of a second layer is offset relative to a winding of a first layer.
52 Citations
18 Claims
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1. A power system comprising:
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a planar surface adapted to receive an electronic device to be powered; a primary power circuit comprising a plurality of transformer windings formed in a multilayer structure comprising at least two layers, each of the transformer windings being substantially parallel to the planar surface, a first layer comprising a plurality of the transformer windings, a transformer winding of a second layer being offset relative to a transformer winding of the first layer; and an electromagnetic shield on a side of the primary power circuit opposite from the planar surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification