Borgwarner Inc.

Andreas Wp Mayer

Calahan B Campton

Philip R Kellogg

Tao Peng

Mitsuru Ishihara

A rotor assembly for an electric motor includes a shaft, a lamination stack, a plurality of magnets including a first magnet, and a plurality of pole pieces including a first pole piece. The first magnet is disposed between the lamination stack and the first pole piece, and each pole piece has an outer pole surface. The rotor assembly also includes a sleeve including an outer sleeve body disposed about the outer pole surface of each pole piece to retain each of the pole pieces with respect to the lamination stack, and a plurality of spacers extending from the outer sleeve body radially inward toward the shaft. The plurality of spacers includes a first and second spacer, and the first and second spacers are disposed between the first pole piece and the lamination stack to reduce flux leakage of the first magnet.

Rotor assembly

An electric drive system in a battery electric vehicle (BEV) includes an output shaft, configured to couple with a drive wheel of the BEV, having a face gear at a distal end; a differential, including a pinion gear cage receiving pinion gears rotatably connected to the pinion gear cage via gear pins; and a housing that receives the differential having an outer surface that is configured to couple to a rotating electrical machine of the BEV, wherein the pinion gears engage the face gear and permit angular displacement of the output shaft relative to another output shaft.

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Clarkston, MI, United States of America

Andreas Wp Mayer