公开(公告)号：US20250149944A1

公开(公告)日：2025-05-08

申请号：US18939408

申请日：2024-11-06

Applicant: BorgWarner Inc.

Inventor： Kirk Neet ,  Matthew Ryan Conner ,  Attila Nagy

IPC: H02K3/24 ,  H02K9/19

Abstract: A liquid-cooled stator for an electric machine includes a stator core positioned within a housing. The housing includes a plurality of teeth and a back iron, the plurality of teeth defining an inner diameter (ID) of the stator core, and the back iron defining an outer diameter (OD) of the stator core. A winding arrangement is positioned on the stator core and includes a first plurality of end turns extending from a first axial end of the stator core and a second plurality of end turns extending from a second axial end of the stator core. A shroud is positioned on the first axial end of the stator core and covers the first plurality of end turns. An inner sleeve is connected to the ID of the stator core and extends in an axial direction beyond a first axial end of the stator core.

公开(公告)号：US20250149938A1

公开(公告)日：2025-05-08

申请号：US18939415

申请日：2024-11-06

Applicant: BorgWarner Inc.

Inventor： Kirk Neet ,  Attila Nagy ,  Matthew Ryan Conner ,  Michael Bradfield

IPC: H02K1/20 ,  H02K3/24

Abstract: A liquid-cooled stator for an electric machine includes a stator core positioned within a housing, the stator core including a plurality of teeth and a back iron, the back iron defining an outer diameter (OD) of the stator. A winding arrangement is positioned on the stator core and includes end turns positioned on an axial end of the stator. At least one shroud is positioned on the axial end of the stator and covers the plurality of end turns. A stator cooling path is configured to direct a continuous flow of liquid from at least one liquid inlet to at least one liquid outlet, the stator cooling path including one section configured to direct liquid through the at least one shroud and across the first plurality of end turns and an additional section configured to direct liquid over the OD of the stator core.

公开(公告)号：US20250125674A1

公开(公告)日：2025-04-17

申请号：US18913387

申请日：2024-10-11

Applicant: BorgWarner Inc.

Inventor： Matthew Ryan Conner ,  Andrew Dragon

IPC: H02K1/18 ,  H02K3/34 ,  H02K11/25

Abstract: A stator for an electric machine includes a stator core, windings, a first end ring, and a second end ring. The stator core includes a plurality of slots and the windings include a plurality of interconnected conductors that extend through the plurality of slots. The windings further include U-shaped end turns on an insertion end of the stator core and weld end turns on a connection end of the stator core. The first end ring is coupled to the insertion end of the stator core and includes a plurality of openings and a plurality of radial ribs. The U-shaped end turns engage the radial ribs of the first end ring. The second end ring is coupled to the connection end of the stator core. The weld end turns are bent around the radial ribs of the second end ring.