Intelligent multi-mode wireless power system
The present disclosure provides a method and system for intelligently managed multi-mode wireless transfer of energy for charging and/or powering electronics devices. Such a system may include a near field energy transfer mode and a far field energy transfer mode that when intelligently combined or used selectively at particular ranges yields an overall improved result. An energy transfer unit connected to a power source may transfer energy over-the-air within range of at least one mode to one or more electronic devices integrated with an energy receiving unit for converting transferred energy to usable power suitable for charging and/or powering of the electronic device. The system may intelligently manage the selection, combination and/or switching of modes as optimally determined by at least one integrated control circuit combined with a communications protocol.
1. A method of providing wireless power to a device load, comprising:
transmitting a directed energy signal over-the-air from an energy transferring unit (ETU) to an energy receiving unit (ERU) of the device load in a first mode when the ERU is in a far field range of the ETU; and,
generating a resonant magnetic field over-the-air by said ETU wherein said resonant magnetic field is coupled with an ERU magnetic field at the same resonant frequency of the ERU of the device load in a second mode when the ERU is in a near field range of the ETU, the far field range being greater than the near field range,
wherein energy is transferred to the ERU from the ETU by selectively managing the directed energy signal and the resonant magnetic field to deliver energy as needed by one or both of the modes simultaneously and with consideration to the device load's energy requirement, energy priority and device load's range relative to the ETU.
2. The method claim 1 wherein said ETU comprises an energy transferring unit micro-controller circuit (ETU MCC) configured to cooperate with an energy receiving unit micro-controller circuit (ERU MCC).
3. The method of claim 1 wherein:
said ETU utilizes a far field transmitter configured to wirelessly transmit said directed energy signal, and a source resonator configured to generate said resonate magnetic field, and
said ERU utilizes a far field receiver configured to wirelessly receive the directed energy signal transmitted from the far field transmitter, and a capture resonator configured to capture resonant magnetic energy in the near field generated by the source resonator.
4. The method of claim 2 further comprising the steps of:
checking the requirements of a dual session to provide the device load with as much power as efficiently possible for charging and powering of said device load;
transferring energy from both the near and far field sources if the requirements for a dual session are satisfied and an altered range requirement does not exist, wherein if an altered range requirement exists the requirements of a dual session are checked; and
checking the availability of near field and inducing a near field session until altered range requirements exist, wherein if altered range requirements do exist then a far field search is initiated.