公开(公告)号：US10923969B2

公开(公告)日：2021-02-16

申请号：US16247521

申请日：2019-01-14

Applicant: GM Global Technology Operations LLC

Inventor： Alireza Fatemi ,  Anthony M. Coppola ,  Thomas W. Nehl ,  David J. Brooks

IPC: H02K1/04 ,  H02K15/12 ,  H02K1/16 ,  H02K1/20 ,  H02K3/12 ,  H02K7/00 ,  H02K15/06 ,  B29C45/14 ,  B29K509/00 ,  B29L31/00 ,  B29K63/00

Abstract: Systems, methods and motor-generators with preform windings and a molded core are described. The preform windings include a first end, a second end, and a plurality of in-slot portions extending from the first end to the second end. The molded core includes a plurality of slots. Each of the plurality of slots including a respective in-slot portion disposed therein. Each of the plurality of slots includes a wall conforming to an outer profile of the respective in-slot portion.

公开(公告)号：US20200169129A1

公开(公告)日：2020-05-28

申请号：US16199868

申请日：2018-11-26

Applicant: GM Global Technology Operations LLC

Inventor： Alireza Fatemi ,  Thomas W. Nehl ,  David J. Brooks

IPC: H02K1/27 ,  H02K15/03 ,  H02K7/00

Abstract: Presented are slotted permanent magnets (PM) for electric machines, motor generator units using slotted PMs, methods for making/using slotted PMs, and motor vehicles equipped with an electric traction motor using slotted PMs. An electric machine includes an annular stator with a hollow core and one or more internal stator slots. One or more electrically conductive windings is/are disposed in the stator slot(s). A cylindrical rotor is rotatably disposed inside the hollow core of the stator. One or more permanent magnets is/are mounted to the rotor. Each permanent magnet includes a rigid, single-piece PM body with opposing first and second faces. A first set of elongated grooves is recessed into the first face. An optional second set of elongated grooves is recessed into the second face. Each of the grooves has a depth that is substantially parallel to a direction of a magnetic field generated by the permanent magnet.

公开(公告)号：US20190170086A1

公开(公告)日：2019-06-06

申请号：US15829449

申请日：2017-12-01

Applicant: GM Global Technology Operations LLC

Inventor： Anthony M. Coppola ,  Hamid G. Kia ,  Paul M. Najt ,  Russell P. Durrett ,  Michael A. Potter ,  Peter P. Andruskiewicz ,  David J. Brooks

IPC: F02F7/00 ,  F02F1/14 ,  B29C70/68

Abstract: An engine block assembly includes a head structure assembly, and a cylinder structure assembly. A plurality of fasteners interconnect the head structure assembly and the cylinder structure assembly. An outer shell encapsulates and supports both the head structure assembly and the cylinder structure assembly. The outer shell is a unitary polymer structure that is simultaneously over-molded onto the head structure assembly and the cylinder structure assembly. The head structure assembly and the cylinder structure assembly are constructed of components that are designed to carry the operational loads of the engine with minimal weight. The outer shell provides additional structural integrity, and provides fluid passages for lubrication and cooling, as well as support for other engine components.