公开(公告)号：US20240146131A1

公开(公告)日：2024-05-02

申请号：US17977068

申请日：2022-10-31

Applicant: GM Global Technology Operations LLC

Inventor： Anthony Michael Coppola ,  Derek Frei Lahr ,  Alireza Fatemi ,  Alan G. Holmes ,  Michael B. Viola ,  Bradley Allen Newcomb

IPC: H02K1/28 ,  H02K1/04

CPC classification number: H02K1/28 ,  H02K1/04

Abstract: A rotor for an electric machine includes a magnetic core configured for arrangement on a shaft. An end ring is arranged on opposite axial ends of the magnetic core. A composite sleeve includes an annular body including an inner surface and an outer surface, and a polymer matrix encapsulating circumferentially oriented fibers. The composite sleeve includes a first tapered portion on the inner surface arranged adjacent to an axial end thereof and configured to facilitate press-fitting of the composite sleeve onto the rotor.

公开(公告)号：US11916446B2

公开(公告)日：2024-02-27

申请号：US17537123

申请日：2021-11-29

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Anthony Michael Coppola ,  Alireza Fatemi ,  Derek Frei Lahr ,  Kestutis A. Sonta ,  Alan G. Holmes

IPC: H02K1/28 ,  H02K15/02 ,  H02K1/2791 ,  B29C65/56 ,  B29L31/00

CPC classification number: H02K15/028 ,  B29C65/565 ,  H02K1/2791 ,  B29L2031/7498

Abstract: A rotor for an electric machine includes a rotor assembly having an outer surface and including a plurality of poles with permanent magnets. A solid layer is formed on the outer surface of the rotor assembly and has an outer surface with a first coefficient of friction that is lower than a second coefficient of friction of the outer surface of the rotor assembly. The rotor includes an outer sleeve. The rotor assembly is press-fit into the outer sleeve.

公开(公告)号：US11876409B2

公开(公告)日：2024-01-16

申请号：US17376334

申请日：2021-07-15

Applicant: GM Global Technology Operations LLC

Inventor： Alireza Fatemi ,  Anthony Michael Coppola ,  Derek Frei Lahr

IPC: H02K1/28 ,  H02K1/27 ,  H02K1/04 ,  H02K15/12 ,  H02K15/03 ,  H02K1/276

CPC classification number: H02K1/28 ,  H02K1/04 ,  H02K1/276 ,  H02K15/03 ,  H02K15/12

Abstract: A rotor for an electric machine includes a rotor body formed from a plurality of rotor laminations defining a first axial end and a second axial end. Each of the plurality of rotor laminations includes a plurality of openings that are aligned so as to define a plurality of passages through the rotor body. A plurality of reinforcement elements extend through the plurality of laminations. Each of the plurality of reinforcement elements is arranged in a corresponding one of the plurality of passages and includes a first end portion and a second end portion. The first end portion and the second end portion of select ones of the plurality of reinforcement elements extend outwardly of the first axial end and the second axial end. An end ring is positioned at the first axial end. The end ring is integrally formed with the select ones of the plurality of reinforcement elements.

公开(公告)号：US11713803B1

公开(公告)日：2023-08-01

申请号：US17732714

申请日：2022-04-29

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Anthony Michael Coppola ,  Derek Frei Lahr ,  Alireza Fatemi ,  Alan G. Holmes ,  Bradley Allen Newcomb

IPC: F16H57/02 ,  H02K5/02 ,  F16H57/032

CPC classification number: F16H57/032 ,  H02K5/02 ,  F16H2057/02034

Abstract: An electric motor drive unit including an electric motor having an output shaft and a plurality of gears in driving engagement with the output shaft. The plurality of gears being supported by a plurality of laterally spaced bearings. A composite housing member includes a structural support skeleton supporting multiple ones of the plurality of laterally spaced bearings and a composite shell molded to the structural support skeleton.

公开(公告)号：US20230170746A1

公开(公告)日：2023-06-01

申请号：US17537563

申请日：2021-11-30

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Anthony Michael Coppola ,  Alireza Fatemi ,  Derek Frei Lahr ,  Kestutis A. Sonta ,  Alan G. Holmes

IPC: H02K1/02 ,  H02K1/276

CPC classification number: H02K1/02 ,  H02K1/2766

Abstract: A rotor assembly for a permanent magnet motor includes a first assembly including a first plurality of laminations and a second assembly including a second plurality of laminations. The first assembly is located radially inside of the second assembly. The first assembly and the second assembly define a first opening therebetween. First and second permanent magnets are located in the first opening. Polymeric material surrounds the first and second permanent magnets in the first opening. An outer layer surrounds the rotor assembly.

公开(公告)号：US20230053482A1

公开(公告)日：2023-02-23

申请号：US17408889

申请日：2021-08-23

Applicant: GM Global Technology Operations LLC

Inventor： Derek Frei Lahr ,  Anthony Michael Coppola ,  Alireza Fatemi

IPC: H02K1/30 ,  H02K15/03 ,  H02K1/27

Abstract: A rotor lamination for an electric machine includes a body having a first axial surface, a second axial surface, a central opening, and an outer annular edge defining a radius. A plurality of magnet receiving openings are formed in the body. Each of the plurality of magnet receiving openings includes a first magnet receiving portion and a second magnet receiving portion. A composite insert is mounted in the body. The composite insert extending along the radius across the magnet receiving opening physically separating the first magnet receiving portion from the second magnet receiving portion.

公开(公告)号：US20230045291A1

公开(公告)日：2023-02-09

申请号：US17392666

申请日：2021-08-03

Applicant: GM Global Technology Operations LLC

Inventor： Derek Frei Lahr ,  Alireza Fatemi ,  Anthony Michael Coppola

IPC: H02K1/28 ,  H02K1/27 ,  H02K15/03 ,  H02K15/12

Abstract: A rotor core for an electric machine of an automobile includes a core stack including a plurality of lamination plates. Each lamination plate includes a plurality of apertures formed therein. The plurality of apertures of each of the lamination plates are axially aligned and define and a slot extending through the core stack and shaped to receive a corresponding insert. The rotor core also includes at least one insert received by the slot that provides radial structural stability to the plurality of lamination plates to prevent portions of the plurality of lamination plates adjacent the plurality of magnet slots from flexing due to radial forces exerted on the plurality of lamination plates during operation of the rotor core. The rotor core includes a load bearing polymer disposed within the aperture of the rotor core that provides contact between and the insert and the lamination plates.