Power source, charging system, and inductive receiver for mobile devices

  • US 8,629,652 B2
  • Filed: 05/23/2011
  • Issued: 01/14/2014
  • Est. Priority Date: 06/01/2006
  • Status: Active Grant
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First Claim
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1. A charger system for use with a mobile device or battery for charging or powering the mobile device or battery inductively, comprising:

  • a base unit comprisingone or more primary coils, wherein each of the primary coils is associated with a switching circuit in the base unit, which switching circuit is capable of being selectively switched to activate its associated primary coil so that, when an electrical current is passed through an activated primary coil, a magnetic field is generated by that activated primary coil, anda power supply for passing a current through the one or more primary coils when activated to generate a magnetic field in a direction substantially perpendicular to a surface of the base unit;

    a communications interface that the base unit, and a mobile device, battery, battery door, or skin use to communicate with each other during powering or charging, toverify the presence of the mobile device, battery, battery door, or skin associated therewith placed upon or close to the surface of the base unit,select and selectively switch, using their associated switching circuits to activate, a selection of the one or more primary coils which are determined to be most closely aligned with a receiver coil at the mobile device, battery, battery door, or skin associated therewith, andperiodically exchange information for use with providing power transfer to the mobile device or battery; and

    wherein the magnetic field is used to inductively generate a current in one or more receiver coils within one or more mobile devices placed close to the base unit, to charge or power the mobile device or battery.

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