公开(公告)号：US20190027990A1

公开(公告)日：2019-01-24

申请号：US15653525

申请日：2017-07-18

Applicant: GM Global Technology Operations LLC

Inventor： Frederick W. RHOADS ,  Rodney C. MALONE ,  John A. DIEMER

IPC: H02K3/38 ,  H02K3/487 ,  H02K3/52

CPC classification number: H02K3/38 ,  H02K3/345 ,  H02K3/487 ,  H02K3/522 ,  H02K11/0094

Abstract: An electric motor for a hybrid or electric vehicle drive unit includes a housing with a stator fixed within the housing and including a plurality of end windings. A rotor is disposed within the housing and connected to a drive shaft. An isolating ring is disposed within the housing between the end windings and the housing.

公开(公告)号：US20250158461A1

公开(公告)日：2025-05-15

申请号：US18506693

申请日：2023-11-10

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yilun LUO ,  Jack M. GAYNEY ,  John A. DIEMER ,  Patrick S. PORTELL ,  Sanjeev M. NAIK ,  Azadeh NARIMISSA ,  Mohammad F. MOMEN

IPC: H02K1/24 ,  H02K5/173 ,  H02K9/19 ,  H02P23/14

Abstract: A motor system includes: a stator connected to a case of a motor; main bearings connected to the case; a main shaft rotating on the main bearings; a rotor mounted on the main shaft and rotating relative to the stator; and at least one of a magnetic flux reducing circuit element and a conductive rolling-element device disposed inward of the main bearings and closer to the stator and the rotor than the main bearings and reducing flow of bearing current through the main bearings.