Method for detecting an electrically conductive foreign body in a region of a device for inductively transmitting electrical energy and device for inductively transmitting electrical energy
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 18, 2017
Grant Date -
Jul 10, 2014
app pub date -
May 24, 2012
filing date -
May 26, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In a method for detecting an electrically conductive foreign body at a device for inductively transmitting electrical energy from a stationary unit having an electrical power supply unit and a primary inductor to a mobile unit having a secondary inductor and an electric load, electrical power is initially fed from the electrical power supply unit into the primary inductor and the feed-in is interrupted. The curve over time of the resulting decay of an electrical operating variable of the primary inductor is measured and at least one parameter of the measured curve is compared with a corresponding parameter of a reference curve in the event of an interruption of the power feed-in into the primary inductor without the presence of an electrically conductive foreign body. The comparison is used to determine whether an electrically conductive foreign body is present in the region of the magnetic field produced by the primary inductor.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2012 Application Filing Year
- H02J Class
- 3166 Applications Filed
- 2735 Patents Issued To-Date
- 86.39 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 6 Citation Count
- H02J Class
- 20.50 % this patent is cited more than
- 8 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Oct 18, 2028 |
