Intelligent charging of multiple electric or electronic devices with a multi-dimensional inductive charger

  • US 9,112,363 B2
  • Filed: 12/10/2012
  • Issued: 08/18/2015
  • Est. Priority Date: 01/18/2011
  • Status: Active Grant
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First Claim
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1. A system for intelligent charging of multiple electric or electronic devices with a multi-dimensional inductive charger, comprising:

  • a base unit having one or more transmitter coils;

    a receiver and receiver coil associated with one or more mobile device or battery, skin, case or battery door associated therewith;

    a switching layer having magnetic properties and covering the one or more transmitter coils or the receiver coil, so that, during charging or powering of the mobile device, or battery, skin, case or battery door associated therewith, the switching layer is layered eitherbetween the one or more transmitter coils and a surface of the base unit, orbetween the receiver coil and a surface of the receiver; and

    wherein one or more components are used to modify one or both the magnitude or phase of an electromagnetic field in one or multiple dimensions, including wherein, when the mobile device, or battery, skin, case or battery door having the receiver coil is placed close to the base unit having the one or more transmitter coils, the switching layer'"'"'s magnetic properties are locally modified, by one or more of a magnetic field of the receiver coil or transmitter coils, or by another magnetic component, to allow power transfer in the particular region of the layer proximate the coils and generally aligned both with the one or more transmitter coils and the receiver coil; and

    a multiplexer within the base unit, for intelligent charging of multiple mobile devices or batteries, includingmultiplexing power transfer to each of the multiple mobile devices or batteries, including one of serially or alternate powering to each receiver associated with the multiple mobile devices or batteries, andduring a period of time for each receiver, receiving one or more of an output voltage, current, or power requirement from that receiver, for use in controlling the charging or powering of its associated mobile device or battery;

    wherein the base unit determines the presence of a mobile device in proximity to the base unit, and wherein a receiver coil or receiver thereby activated performs an initiation process whereby its ID, presence, power, voltage or other requirements are communicated to the base unit, including different power, voltage or other requirements for different types of mobile devices.

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