System and method for coded communication signals regulating inductive power transmissions

Patent metadata

Field	Value
Publication number	US-11979201-B2
Application number	US-202217861828-A
Country	US
Kind code	B2
Filing date	Jul 11, 2022
Priority date	Jul 2, 2008
Publication date	May 7, 2024
Grant date	May 7, 2024

Abstract

An inductive power outlet is disclosed. The inductive power outlet has a primary inductor, for wirelessly powering an inductive power receiver. The inductive power outlet has a secondary inductor. The primary inductor and the secondary inductor form a resonant frequency. The inductive power outlet comprises a driver generating an oscillating voltage to the primary coil at a frequency higher than the resonant frequency. The inductive power outlet comprises a signal detector. The signal detector comprises a peak detector configured to detect voltage peaks across the primary inductor or current peaks of a current supplied to the primary inductor. The signal detector comprises a processor configured to determine a frequency of either the voltage peaks or the current peaks.

First claim

What is claimed is:

1. An inductive power receiver, having a secondary inductor, wirelessly powered by an inductive power outlet, having a primary inductor, wherein the primary inductor and the secondary inductor form a resonant frequency, the inductive power receiver comprising:
a regulator operable to power a load by converting oscillating current induced across the secondary coil at a frequency higher than the resonant frequency; and a transmission circuit comprising:
an ancillary load designated to be connected to the secondary coil by a switching unit controlled by a signal generator.

2. The inductive power receiver of claim 1 , wherein the signal generator produces a plurality of instruction signals each corresponding to at least one function to be performed by the inductive power outlet.

3. The inductive power receiver of claim 2 , wherein the signal generator uses the switching unit for modulating the ancillary load that consequently creates voltage and current peaks across the primary inductor.

4. The inductive power receiver of claim 2 , wherein the at least one function is selected from the group consisting of select a first operating power; select a second operating power; increase operating power by a first increment; increase operating power by a second increment; decrease operating power by a first increment; decrease operating power by a second increment; provide oscillating voltage that maintain same power; cease to provide oscillating voltage; and any combination thereof.

5. The inductive power receiver of claim 1 , wherein signals generated by the signal generator have a specific frequency range.

6. The inductive power receiver of claim 1 , wherein signals generated by the signal generator have a frequency of 2 KHz.

7. A wireless powering system comprising:
an inductive power outlet, and
the inductive power receiver of claim 1 ,
wherein the oscillating current induced across the secondary coil is generated by a driver, wherein the oscillating current has a frequency higher than the resonant frequency, wherein a signal detector and a processor are configured to detect at least one instruction signal generated by the transmission circuit, and wherein the inductive power outlet is configured to execute the at least one instruction.

8. A wireless powering system comprising:
an inductive power outlet, having a primary inductor, for wirelessly powering an inductive power receiver, having a secondary inductor, wherein the primary inductor and the secondary inductor form a resonant frequency, the inductive power outlet comprising:
a driver generating an oscillating voltage to the primary coil at a frequency higher than the resonant frequency; and
a signal detector comprising:
a peak detector configured to detect voltage peaks across the primary inductor or current peaks of a current supplied to the primary inductor; and
a processor configured to determine a frequency of either the voltage peaks or the current peaks and cause the inductive power outlet to either shut-down or issue a warning if a peak out of either the voltage peaks or the current peaks exceeds a predetermined threshold; and
an inductive power receiver, having a secondary inductor, wirelessly powered by an inductive power outlet, having a primary inductor, wherein the primary inductor and the secondary inductor form a resonant frequency, the inductive power receiver comprising:
a regulator operable to power a load by converting oscillating current induced across the secondary coil at a frequency higher than the resonant frequency; and
a transmission circuit comprising:
an ancillary load designated to be connected to the secondary coil by a switching unit controlled by a signal generator,
wherein the oscillating current induced across the secondary coil is generated by the driver, wherein the oscillating current has a frequency higher than the resonant frequency, wherein the signal detector and the processor are configured to detect the at least one instruction signal generated by a transmission circuit, and wherein the inductive power outlet is configured to execute the at least one instruction.

Assignees

• Powermat Tech Ltd

Inventors

• Azancot Yossi
• Rofe Arik
• Greenwald Oola
• Ben-Shalom Amir
• Asheri Moti
• Leibovitz Alfred

Classifications

• H02J7/80

  including monitoring or indicating arrangements · CPC title

• H02J7/60

  including safety or protection arrangements · CPC title

• H02J7/47

  Arrangements for checking compatibility or authentication between one component, e.g. a battery or a battery charger, and another component, e.g. a power source · CPC title

• H04B5/0037 Primary

  Electricity · mapped topic

• H01F38/14

  Inductive couplings {(for wireless supply or distribution of electric power using inductive coupling H02J50/10)} · CPC title