公开(公告)号：US20250125676A1

公开(公告)日：2025-04-17

申请号：US18486614

申请日：2023-10-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Shawn H. Swales ,  Rebecca K. Risko Cattell ,  Neal Parsons ,  Edward L. Kaiser ,  Matthew James Bozich ,  Nicholas Mark Sulimirski

IPC: H02K1/32 ,  H02K1/276

Abstract: A rotor for an electric machine includes an air circulation cooling system. The rotor includes a rotor core having cavities internal to the rotor core. The rotor core extends longitudinally between two ends. The cavities are defined by the rotor core. The cavities extend through the rotor core and open through at least one of the ends. The rotor core operates to circulate air through the cavities by rotation of the rotor core.