Patent ID: 9143003
Filing Date: 2015-09-22
Classification: H02J

Abstract:
1. A wireless charging system comprising: an inductive power supply for supplying wireless power from a primary; and a remote device separable from said inductive power supply, wherein said remote device includes a secondary power circuit, a charge storage capacitor, a charging subcircuit, and a battery; said secondary power circuit is electrically connected to said charge storage capacitor and said secondary power circuit is configured to receive wireless power from said primary of said inductive power supply and rapidly charge said charge storage capacitor; sense circuitry coupled to said charge storage capacitor, said sense circuitry configured to provide a sensor output indicative of a sensed characteristic of said charge storage capacitor; said charging subcircuit is electrically connected to said charge storage capacitor and said battery; wherein, in response to said sensed characteristic of charge storage capacitor reaching a predetermined threshold, said charging subcircuit charges said battery with power stored in said charge storage capacitor, wherein said secondary power circuit controls supply of wirelessly received power to said charge storage capacitor based on said sensor output.