Inductive power source and charging system

  • US 9,577,440 B2
  • Filed: 05/25/2011
  • Issued: 02/21/2017
  • Est. Priority Date: 01/31/2006
  • Status: Active Grant
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First Claim
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1. A mobile device capable of inductive powering or charging by a universal base unit for charging of different mobile devices and/or batteries of different charging characteristics associated therewith, comprising:

  • a battery, wherein one or both of a mobile device and the battery have particular charging characteristics associated therewith;

    a receiver and receiver coil, for one of inductively powering the device or charging the battery in the mobile device, wherein the receiver is one of attached to or incorporated into the battery or the mobile device, and wherein the receiver coil has a generally planar shape so that a magnetic field received in a direction substantially perpendicular to the plane of the receiver coil is used to inductively generate a current in the receiver coil;

    an identification component associated with the mobile device or battery, which is configured to provide wireless identification of the receiver to the universal base unit;

    a means for avoiding overcharging one or both of the mobile device and battery inductively; and

    a regulator, coupled to the output of the receiver or to the battery, that regulates an output voltage or output current provided by the receiver, to the mobile device or battery, to be within a range of parameters for the mobile device or the battery;

    wherein different mobile devices and batteries can have different charging characteristics associated therewith; and

    wherein the receiver communicates with the base unit todetect, identify and authenticate the receiver with the base unit, as provided by the identification component,determine and then activate one or more primary coils of the base unit which are aligned with the receiver coil,verify the continued presence of the receiver near the base unit, andcommunicate information describing the characteristics of the mobile device or the battery, for use by the base unit to provide power transfer to the receiver and to the mobile device and the battery according to their particular charging characteristics.

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