公开(公告)号：US20220231587A1

公开(公告)日：2022-07-21

申请号：US17151256

申请日：2021-01-18

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： John S. Agapiou ,  Edwin H. Chang ,  Yew Sum Leong

IPC: H02K17/16 ,  H02K1/27 ,  H02K9/22 ,  H02K5/15

Abstract: An induction motor includes a stator and a rotor. The stator is configured to generate a rotating magnetic field. The rotor is disposed inside the stator, separated from the stator by an air gap, and is configured to rotate around an axis in response to the rotating magnetic field. The rotor includes a rotor core, multiple end rings, and multiple collars. The end rings are attached at opposite ends of the rotor core. Each end ring has one of multiple regions disposed outside the air gap. Each region has an outer surface. The collars are attached in a prestressed condition around the outer surface of each region. The prestressed condition is configured to maintain a compressive stress in the end rings at a maximum-designed rotational speed of the rotor.

公开(公告)号：US11552541B2

公开(公告)日：2023-01-10

申请号：US17151256

申请日：2021-01-18

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： John S. Agapiou ,  Edwin H. Chang ,  Yew Sum Leong

IPC: H02K17/16 ,  H02K5/15 ,  H02K9/22 ,  H02K1/2706

Abstract: An induction motor includes a stator and a rotor. The stator is configured to generate a rotating magnetic field. The rotor is disposed inside the stator, separated from the stator by an air gap, and is configured to rotate around an axis in response to the rotating magnetic field. The rotor includes a rotor core, multiple end rings, and multiple collars. The end rings are attached at opposite ends of the rotor core. Each end ring has one of multiple regions disposed outside the air gap. Each region has an outer surface. The collars are attached in a prestressed condition around the outer surface of each region. The prestressed condition is configured to maintain a compressive stress in the end rings at a maximum-designed rotational speed of the rotor.

公开(公告)号：US11699942B2

公开(公告)日：2023-07-11

申请号：US16420643

申请日：2019-05-23

Applicant: GM Global Technology Operations LLC

Inventor： Hongliang Wang ,  James G. Schroth ,  Matthew T. Vanderlip ,  Edwin H. Chang

IPC: H02K15/00 ,  B33Y10/00 ,  B29C64/112 ,  H02K15/02 ,  B22F7/08 ,  B22F10/28 ,  B33Y80/00 ,  B33Y40/00 ,  H02K1/18 ,  H01R43/16 ,  H01R43/20 ,  H01R43/24 ,  H02K1/12

CPC classification number: H02K15/0062 ,  B22F7/08 ,  B22F10/28 ,  B29C64/112 ,  H02K15/0056 ,  H02K15/0068 ,  H02K15/02 ,  B33Y10/00 ,  B33Y40/00 ,  B33Y80/00 ,  H01R43/16 ,  H01R43/20 ,  H01R43/24 ,  H02K1/12 ,  H02K1/18 ,  H02K1/187 ,  H02K2203/09 ,  H02K2203/12

Abstract: A method for manufacturing an electro-mechanical device includes creating a plurality of substrates using a first additive manufacturing process. Each of the substrates includes a polymeric material. The substrates include a first substrate and a second substrate. The first substrate includes a first main body and defines a protrusion extending from the first main body. The second substrate includes a second main body and a recess defined in the second main body. The method includes coupling the first substrate to the second substrate by inserting the protrusion into the recess such that the protrusion elastically deforms to an elastically averaged configuration. The protrusion and the recess together form an elastic averaging coupling. The method includes creating a plurality of electrically conductive components using a second additive manufacturing process and then coupling the electrically conductive components to at least one of the substrates.

公开(公告)号：US20200368969A1

公开(公告)日：2020-11-26

申请号：US16420643

申请日：2019-05-23

Applicant: GM Global Technology Operations LLC

Inventor： Hongliang Wang ,  James G. Schroth ,  Matthew T. Vanderlip ,  Edwin H. Chang

IPC: B29C64/379 ,  B29C64/112 ,  B29C64/135

Abstract: A method for manufacturing an electro-mechanical device includes creating a plurality of substrates using a first additive manufacturing process. Each of the substrates includes a polymeric material. The substrates include a first substrate and a second substrate. The first substrate includes a first main body and defines a protrusion extending from the first main body. The second substrate includes a second main body and a recess defined in the second main body. The method includes coupling the first substrate to the second substrate by inserting the protrusion into the recess such that the protrusion elastically deforms to an elastically averaged configuration. The protrusion and the recess together form an elastic averaging coupling. The method includes creating a plurality of electrically conductive components using a second additive manufacturing process and then coupling the electrically conductive components to at least one of the substrates.