Inductive power source and charging system

  • US 7,952,322 B2
  • Filed: 01/30/2007
  • Issued: 05/31/2011
  • Est. Priority Date: 01/31/2006
  • Status: Active Grant
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First Claim
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1. A mobile, electronic, or other device and/or battery, battery door, or skin for use with the device, which is capable of being inductively powered or charged comprising:

  • a receiver for one of inductively powering or charging the mobile, electronic, or other device and/or battery, wherein the receiver includes a receiver coil having a generally planar or curved face, so that when the receiver coil is generally aligned upon one or more primary coils in a base unit that are capable of being selectively switched or activated by a switch in the base unit associated with the one or more primary coils, and also having a generally planar or curved face, so that the planes of their faces are generally parallel, and when a magnetic field is applied in a direction substantially perpendicular to the face of the receiver coil using induction from the one or more primary coils in the base unit, an electrical current is generated within the receiver coil and is used to power or charge the mobile, electronic, or other device and/or battery;

    a regulator thatdetermines operating characteristics of the mobile electronic, or other device and/or battery, including one or more of charging capacity, present charge, voltage level and/or temperature,senses one or more of the current drawn from the receiver coil, or output voltage or output current provided to the device and/or battery, andregulates the current and/or voltage to be within the range of one of either a predefined value or an appropriate power parameter of the mobile, electronic or other device and/or battery as sensed by the regulator;

    a microcontroller unit or identification component located within the mobile, electronic, or other device and/or battery, battery door, or skin, wherein the microcontroller unit or identification component is configured to provide wireless identification and/or authentication of the receiver to the base unit, using current modulation or other farm of wireless communication; and

    wherein, when the mobile, electronic, or other device and/or battery, battery door, or skin is positioned in proximity to the base unit having the one or more primary coils capable of being selectively switched, so that the receiver coil is generally aligned upon the one or more primary coils in the base unit, the mobile, electronic, or other device and/or battery, battery door, or skin and the base unit operate with one another prior to and during charging to determine and then activate the one or more primary coils which is most appropriately aligned with the receiver coil, receive at the receiver inductive energy from the base unit, power the microcontroller unit or identification component to identify and/or authenticate the receiver, andcontinue to operate with one another prior to and during charging, to verify the continued presence of the receiver near the base unit, and/or wirelessly exchange additional Information to provide optimum power transfer to the receiver.

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