公开(公告)号：US20230077647A1

公开(公告)日：2023-03-16

申请号：US17990113

申请日：2022-11-18

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Jinhua Chen ,  Chaoqiang Wu ,  Zhao Zhou ,  Jianxin Huang ,  Shaohua Wang

IPC: H02K9/14 ,  H02K1/12 ,  H02K1/26

Abstract: A motor rotor includes a wound rotor comprising a rotating shaft, a rotor core, and a plurality of rotor coils. The rotor core is fixedly sleeved on the rotating shaft, a plurality of winding holes surrounding the rotating shaft are provided at intervals on the rotor core, each winding hole penetrates through two ends that are of the rotor core and that are disposed in an axial direction, each rotor coil is wound on hole walls of two adjacent winding holes, and two adjacent rotor coils share one winding hole. A gap is formed between two adjacent rotor coils, a first shaft hole is formed on the rotating shaft, the gap is configured as a first heat dissipation channel connected to the first shaft hole, and the first heat dissipation channel is used for inflow of coolant in the rotating shaft.