| CPC H02J 50/10 (2016.02) [G06F 1/1683 (2013.01); H02J 7/00041 (2020.01); H02J 7/0013 (2013.01); H02J 7/0047 (2013.01); H02J 7/00714 (2020.01); H02J 50/05 (2016.02); H02J 50/12 (2016.02); H02J 50/402 (2020.01); H02J 50/70 (2016.02); H02J 50/80 (2016.02); H02J 50/90 (2016.02); H02J 2300/22 (2020.01)] |
| AS A RESULT OF REEXAMINATION, IT HAS BEEN DETERMINED THAT: |
| The patentability of claims 1, 2, 23 and 30 is confirmed. |
| Claims 3-22, 24-29 and 31-33 were not reexamined. |
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1. A system for inductive powering of charging of portable devices, the system comprising:
one or more primary coils that are substantially planar and parallel to a surface of the system for powering or charging one or more compatible portable devices including batteries and receiver units, each receiver unit including a receiver coil and a receiver circuit including a receiver rectifier circuit;
one or more drive circuits including one or more FET drivers, FET switches, and capacitors coupled to the one or more primary coils that when operated apply an alternating electrical current to the one or more primary coils to generate a magnetic field in a direction substantially perpendicular to the plane of the one or more primary coils and the surface of the system to provide power to the one or more portable devices capable of being powered or charged by the system when present and near the one or more primary coils;
one or more sense circuits to monitor the current through the one of more primary coils to sense communications from the one or more receiver coils; and
one or more communication and control circuits including one or more microcontrollers coupled to the one or more drive circuits and the one or more sense circuits that detect communications through the one or more sense circuits via the one or more primary coils and control the one or more drive circuits to control the powering or charging of the one or more compatible portable device;
wherein the one or more communication and control circuits;
operate the one or more drive circuits near a first resonant frequency of a circuit formed by a primary coil and a drive circuit and a receiver coil and a receiver circuit of a compatible portable device when nearby;
switch the one or more primary coils at a frequency and power level sufficient to transfer power to one or more of the receiver units when near the one of more primary coils for a sufficiently long period of time to activate the one or more receiver circuits and to receive a response from the one or more receiver circuits via the one of more receiver coils which the one or more primary coils sense via the one or more sense circuits as a modulation of one or more primary coil currents;
detect, through the one or more sense circuits, communications from the one or more receiver units through the one or more receiver coils including information corresponding to one or more voltages at one or more outputs of the one or more receiver rectifier circuits induced by the one or more primary coils and the one or more receiver coils and information associated with the one or more portable devices and/or receiver units to enable the one or more communication and control circuits to identify the one of more portable devices and/or receiver units and to determine any one or more appropriate charging of powering algorithm profiles therefor;
for each portable device, determine the primary coil electromagnetically most aligned with the receiver coil of the portable device;
drive the one or more FET switches associated with the most aligned one or more primary coils;
periodically receive information corresponding to one or more output voltages or currents of the one or more receiver rectifier circuits via the one or more primary coils and the one or more sense circuits; and
regulate in a closed loop feedback manner the one or more output voltages or currents of the one or more receiver rectifier circuits by adjusting the frequency or duty cycle of the one or more drive circuits during the charging or powering of the one or more portable devices.
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