公开(公告)号：US20220006354A1

公开(公告)日：2022-01-06

申请号：US17481526

申请日：2021-09-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jiangang WANG ,  Quanming LI ,  Tingyu XIE ,  Yibo WANG

IPC: H02K9/19 ,  H02K1/20 ,  H02K5/20 ,  H02K7/116 ,  B60K1/00

Abstract: This application provides a motor cooling system of an electric vehicle. In the cooling system, a coil cooling oil passage includes a first oil outlet that is at an end portion of a stator core. A core cooling oil passage and the coil cooling oil passage are sequentially connected. In this case, cooling oil first enters the core cooling oil passage, and then enters the coil cooling oil passage. The core cooling oil passage extends in a circumferential direction of the stator core. The coil cooling oil passage extends in an axial direction of the stator core. A power apparatus drives the cooling oil to enter the core cooling oil passage from an oil inlet, flow through the core cooling oil passage, and enters the coil cooling oil passage from an oil through port. The cooling oil flows back to an oil return groove from the first oil outlet.

公开(公告)号：US20210408854A1

公开(公告)日：2021-12-30

申请号：US17472998

申请日：2021-09-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jiangang WANG ,  Quanming LI ,  Tingyu XIE

IPC: H02K1/32 ,  H02K1/28 ,  B60K17/08 ,  B60K1/00

Abstract: A rotor includes a rotor iron core, a rotor shaft, and a fastening plate. The rotor iron core includes a first and a second end, and extends along an axial direction. The first fastening plate is fastened to at least the first or second end, and includes a through hole and a first runner. An inlet of the first runner communicates with the through hole. An outlet of the first runner is on a surface of a side of the fastening plate. The rotor shaft includes a second runner and a third runner in the rotor shaft. An inlet of the second runner is at one end of the at least one end of the rotor shaft. An outlet of the second runner communicates with an inlet of the third runner. An outlet of the third runner communicates with the inlet of the first runner.

公开(公告)号：US20210394611A1

公开(公告)日：2021-12-23

申请号：US17466137

申请日：2021-09-03

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jiangang WANG ,  Quanming LI ,  Tingyu XIE ,  Yibo WANG

IPC: B60K11/02 ,  B60L3/00 ,  H02K9/19

Abstract: This application provides a motor, including a stator core and a motor housing provided with a distribution groove, a liquid inlet channel, and a liquid outlet channel. The distribution groove is provided on an inner wall of the motor housing, the liquid inlet channel is in communication with the distribution groove and an outer space of the motor housing, and the liquid outlet channel is in communication with an inner cavity and the outer space of the motor housing. An outer wall of the stator core is provided with a stator groove. The stator groove is in communication with both the distribution groove and the liquid outlet channel. The liquid inlet channel, the distribution groove, the stator groove, and the liquid outlet channel are in communication to form a coolant channel.