Patent · US Active

Asymmetrically layered stacked coils and/or chamfered ferrite in wireless power transfer applications

US9912172B2 · kind B2 · utility

1Cited by

3References

28Claims

0Family size

Assignee

QUALCOMM Incorporated · US

Inventors

Johan Samuelsson · Aying, DE
Michael Werner · Marloffstein, DE
Maciej Krzysztof Skowron · Munich, DE

Key dates

Filing date	Jul 27, 2015
Grant date	Mar 6, 2018
Priority date	—
Expiry date	May 4, 2036

Classification

Technology area (CPC H)Electricity
CPC primaryH02J50/12
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An apparatus for wirelessly transferring power comprises a first coil having a first winding path and a second winding path. The apparatus comprises a holder configured to hold the first coil and the second coil in a predetermined winding pattern. Each of the first and second winding paths comprise a plurality of successive winding groups. In each of the plurality of successive winding groups, at least a portion of each winding of consecutive windings is disposed on top of an immediately previous winding on the holder for a predetermined number of windings. Each of the successive winding groups of the first winding path is disposed along an outer perimeter of an immediately previous winding group and each of the successive winding groups of the second winding path is disposed along an inner perimeter of an immediately previous winding group.

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