System and method for coded communication signals regulating inductive power transmissions

Patent metadata

Field	Value
Publication number	US-10680469-B2
Application number	US-201816053126-A
Country	US
Kind code	B2
Filing date	Aug 2, 2018
Priority date	Jul 2, 2008
Publication date	Jun 9, 2020
Grant date	Jun 9, 2020

Abstract

An inductive power outlet for wirelessly powering a power receiver is presented that comprises a voltage peak detector that is configured to detect voltage changes that are indicative of increase in a system resonant frequency. The inductive power outlet is configured to respond to detected voltage changes by shutting down or issuing a warning, and the voltage peak detector is further used to detect communication signals initiated by the power receiver to the power outlet.

First claim

What is claimed is:

1. An inductive power outlet, having a primary inductor, for wirelessly powering a power receiver, the inductive power outlet comprising:
a signal receiving circuit comprising:
a peak detector configured to detect voltage, current peaks, or voltage and current peaks in the primary inductor; and
a processor having a demodulator, the demodulator configured to determine frequencies of the peaks,
wherein the power outlet is configured to either shut down or issue a warning indicating hazardous scenario if a peak of the peaks exceeds a normal operating voltage by the peak detector, and wherein the processor is configured to detect signals of the power receiver based on the frequencies.

2. The inductive power outlet of claim 1 , wherein the signal receiving circuit is configured to produce an output signal that corresponds to the signals of the power receiver, wherein the signals comprise information about the power receiver.

Assignees

• Powermat Tech Ltd

Inventors

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

Classifications

• H01F38/14

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

• H02M3/3376

  with automatic control of output voltage or current · CPC title

• H01F2038/143

  for signals · CPC title

• Y02B70/1433

  Cross-Sectional Technologies · mapped topic

• H02J7/025

  Electricity · mapped topic