公开(公告)号：US12057763B2

公开(公告)日：2024-08-06

申请号：US17845165

申请日：2022-06-21

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Shaobo Yang ,  Jiangang Wang

IPC: H02K9/19 ,  B60K1/00 ,  B60K11/02

CPC classification number: H02K9/19 ,  B60K1/00 ,  B60K11/02 ,  B60K2001/006

Abstract: A powertrain includes a motor, a reducer, an oil pan, and a cooling system. The cooling system includes at least one heat exchanger and at least two oil pumps. The at least two oil pumps are configured to deliver, to the heat exchanger, cooling oil sucked from the oil pan. The heat exchanger is configured to cool the cooling oil sucked by the at least two oil pumps. An oil outlet port of the heat exchanger is connected to an oil passage in the motor and an oil passage in the reducer, so that a part of the cooling oil cools the motor through the oil passage in the motor, and another part of the cooling oil cools the reducer through the oil passage in the reducer. The embodiments can improve a cooling effect of the cooling system for the powertrain.

公开(公告)号：US20230179131A1

公开(公告)日：2023-06-08

申请号：US18160830

申请日：2023-01-27

Applicant: Huawei Digital Power Technologies Co., Ltd. ,  Shanghai Jiao Tong University

Inventor： Jiangang Wang ,  Fei Zhou ,  Tenghui Dong ,  Chong Zhu ,  Xi Zhang ,  Quanming Li ,  Jun Chen

IPC: H02P21/14

CPC classification number: H02P21/14

Abstract: A temperature prediction method and apparatus are provided. The method includes: determining a loss of a motor based on information about a motor controller, where the loss of the motor includes a first loss and a second loss, and the first loss is a loss generated by a fundamental wave component of a current of the motor (S210); and determining temperature of the motor based on the loss of the motor and a temperature prediction model (S220). According to the method, precision of temperature prediction of the motor can be improved.

公开(公告)号：US11581785B2

公开(公告)日：2023-02-14

申请号：US17481526

申请日：2021-09-22

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Jiangang Wang ,  Quanming Li ,  Tingyu Xie ,  Yibo Wang

IPC: H02K9/19 ,  H02K5/20 ,  H02K1/20 ,  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：US11575291B2

公开(公告)日：2023-02-07

申请号：US17501247

申请日：2021-10-14

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Jiangang Wang ,  Quanming Li ,  Jun Wen

IPC: H02K5/20 ,  H02K9/193 ,  B60K11/02

Abstract: A motor, a powertrain, and a vehicle. The motor may be applied to an electric motor vehicle/electric vehicle, a pure electric vehicle, a hybrid electric vehicle, a range extended electric vehicle, a plug-in hybrid electric vehicle, a new energy vehicle, battery management, a motor & driver, a power converter, a reducer, or the like. The motor is configured to output power. In a process of outputting power by the motor, a blocking member arranged in the motor blocks the contact between a rotor of the motor and a coolant, so that the coolant does not splash under the centrifugal action of the rotor in the process of rotation, thereby avoiding the kinetic energy consumption of the rotor. Therefore, a rotating speed of the motor is faster, and the output power is greater.