Wireless battery charging

  • US 7,471,062 B2
  • Filed: 06/12/2002
  • Issued: 12/30/2008
  • Est. Priority Date: 06/12/2002
  • Status: Active Grant
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First Claim
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1. An apparatus for charging a battery in a portable device, the apparatus comprising:

  • a non-power-line-connected source of electrical charge;

    an intermediate storage device for storing the electrical charge to serve as a primary source for recharging the battery in the portable device;

    a source charger/converter for charging the intermediate storage device with an electrical charge received from the non-power-line-connected source; and

    a transfer charger/converter for delivering the stored electrical charge from the intermediate storage device to the battery in the portable device, wherein the source charger/converter transfers the electrical charge to the intermediate storage device over an extended period of time that is longer in duration than a period of time required for delivering the stored electrical charge to the battery of the portable device.

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