Patent · US Active

System and method for reducing leakage flux in wireless charging systems

US9923406B2 · kind B2 · utility

5Cited by

5References

31Claims

0Family size

Assignee

QUALCOMM Incorporated · US

Inventors

Leandro Percebon · Munich, DE
Michael Werner · Marloffstein, DE
Daniel Kuerschner · Grasbrunn, DE
Wojciech Chlebosz · Taufkirchen, DE

Key dates

Filing date	Sep 4, 2015
Grant date	Mar 20, 2018
Priority date	—
Expiry date	Dec 13, 2035

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T90/14
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

One innovation includes a system for reducing magnetic flux of a wireless charging field in a wireless power charging system. The system comprises a wireless power transmitter configured to generate the wireless charging field, the field comprising the magnetic flux and a collector comprising a ferromagnetic material and configured to reduce the magnetic flux. The collector is positioned between a first distance and a second distance at a third distance from the transmitter. The collector is configured to reduce the magnetic flux at a first level at the first distance, at a second level at the second distance, and at a third level at the third distance, the third level greater than each of the first and second levels.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.