Inductive charging system
First Claim
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1. An apparatus for inductive charging a battery comprising:
- a housing with a lower surface and a charging surface, wherein a rechargeable device with a rechargeable battery may be variably placed on the charging surface;
a controller for driving an oscillator, wherein the controller receives power from a power source;
a first charger coil disposed within the housing;
a second charger coil disposed within the housing, wherein the first charger coil and the second charger coil are coupled to the oscillator and create a substantially horizontal magnetic field in a volume of space above the charging surface; and
one or more permeable tiles disposed on or below the charging surface and above the first charger coil and the second charger coil, wherein the one or more permeable tiles form a controlled permeable path to limit field leakage from the charging surface.
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Abstract
An apparatus for inductive charging a battery. The apparatus includes a housing with a lower surface and a charging surface. A rechargeable device with a rechargeable battery may be placed on the charging surface. The apparatus further includes a controller for driving an oscillator, wherein the controller receives power from a power source. A first charger coil and second charger coil are disposed within the housing and are coupled to the oscillator. The first charger coil and second charger coil create a substantially horizontal magnetic field in the volume of space above the charging surface.
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Citations
52 Claims
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1. An apparatus for inductive charging a battery comprising:
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a housing with a lower surface and a charging surface, wherein a rechargeable device with a rechargeable battery may be variably placed on the charging surface; a controller for driving an oscillator, wherein the controller receives power from a power source; a first charger coil disposed within the housing; a second charger coil disposed within the housing, wherein the first charger coil and the second charger coil are coupled to the oscillator and create a substantially horizontal magnetic field in a volume of space above the charging surface; and one or more permeable tiles disposed on or below the charging surface and above the first charger coil and the second charger coil, wherein the one or more permeable tiles form a controlled permeable path to limit field leakage from the charging surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 36)
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26. A system for inductive charging comprising:
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a charger comprising; a housing with a lower surface and a charging surface, wherein a rechargeable device with a rechargeable battery may be variably placed on the charging surface; a controller for driving an oscillator, wherein the controller receives power from a power source; a first charger coil disposed within the housing; a second charger coil disposed within, the housing, wherein the first charger coil and the second charger coil are coupled to the oscillator and create a substantially horizontal magnetic field in a volume of space above the charging surface; and one or more permeable tiles disposed on or below the charging surface and above the first charger coil and the second charger coil, wherein the one or more permeable tiles form a controlled permeable path to limit field leakage from the charging surface, wherein the rechargeable device comprises; a receive coil for coupling to the substantially horizontal magnetic field and producing an induced voltage; and a rectifier for producing a rectified induced voltage to charge the battery in the rechargeable device. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35)
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37. An apparatus for inductive charging a battery comprising:
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a housing having a concave charging surface; a controller for driving an oscillator, wherein the controller receives power from a power source; a first angled charger coil disposed within the housing adjacent the concave charging surface; and a second angled charger coil disposed within the housing adjacent the concave charging surface, wherein the first angled charger coil and the second angled charger coil are coupled to the oscillator and crate a substantially horizontal magnetic field in a volume of space above the concave charging surface; and one or more permeable tiles disposed on or below the concave charging surface and above the fit angled charger coil and the second angled charger coil, wherein the one or more permeable tiles form a controlled permeable path to limit field leakage from the concave charging surface. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52)
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Specification