公开(公告)号：US20230014936A1

公开(公告)日：2023-01-19

申请号：US17953487

申请日：2022-09-27

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Jiangang WANG ,  Shaobo YANG ,  Jun CHEN ,  Quanming LI

IPC: B60H1/32

Abstract: A temperature control system includes: a first cooling circuit, where a first cooling medium is circulated in the first cooling circuit, and the first cooling circuit is configured to cool a first structural unit; a second cooling circuit, where a second cooling medium is circulated in the second cooling circuit, and the second cooling circuit is configured to cool a second structural unit; and a heat exchanger, separately connected to the first cooling circuit and the second cooling circuit, and configured to perform heat exchange between the first cooling medium and the second cooling medium, where the first cooling circuit includes a bypass branch, and the bypass branch is connected in parallel to the heat exchanger. According to the temperature control system, heat dissipation efficiency for an inverter and an overall heat dissipation capability for a powertrain are improved.

公开(公告)号：US20220320962A1

公开(公告)日：2022-10-06

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 ,  B60K11/02 ,  B60K1/00

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：US20230114407A1

公开(公告)日：2023-04-13

申请号：US17964116

申请日：2022-10-12

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Hongbing LIU ,  Xiang FANG ,  Yi CAO ,  Jiangang WANG

IPC: F16H57/04

Abstract: A power assembly and a vehicle. The power assembly includes a housing, and a first drive motor, a first speed reducer, a first oil path, a second drive motor, a second speed reducer, a second oil path, and a third oil path that are located inside the housing. The power assembly further includes a first oil pump and a second oil pump. The housing is provided with an oil pan. The first drive motor includes a first stator and a first rotor. The second drive motor includes a second stator and a second rotor. Both the first oil pump and the second oil pump are connected to the oil pan. The power assembly simplifies the oil paths in the housing and improve an integration level.

公开(公告)号：US20220352842A1

公开(公告)日：2022-11-03

申请号：US17858812

申请日：2022-07-06

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Jiangang WANG ,  Jiyang LI ,  Wen YE

IPC: H02P29/68 ,  H05K7/20 ,  H02P27/06 ,  H02K9/19 ,  H02K7/14 ,  B60L53/20 ,  B60L3/00

Abstract: This application provides a powertrain, a coolant flow rate estimation method, and an electric vehicle. Coolant in a first cooling loop of the powertrain is configured to cool an inverter. An electronic pump drives the coolant to circulate in the first cooling loop. When a phase current of a motor is greater than or equal to a preset current value, a controller determines a rotation speed of the electronic pump at a first moment as a first rotation speed, and determines a coolant flow rate at the first moment based on a temperature at a first position in the first cooling loop, a temperature at a second position in the inverter, and a power loss of the inverter. In the solution of this application, data does not need to be separately calibrated for different thermal management systems. This reduces time consumed by data calibration and improves practicability.

公开(公告)号：US20230327504A1

公开(公告)日：2023-10-12

申请号：US18321098

申请日：2023-05-22

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Hongbing LIU ,  Haisong XU ,  Jiangang WANG ,  Shaobo YANG ,  Bayaer EERHEMU ,  Jun CHEN

IPC: H02K1/20 ,  H02K5/10 ,  H02K5/15

CPC classification number: H02K1/20 ,  H02K5/10 ,  H02K5/15

Abstract: A stator includes a stator core and a seal kit. The stator core includes a yoke part and a plurality of tooth parts. A tooth root of the tooth part is connected to the yoke part. A tooth top of the tooth part is away from the yoke part. An opening slot is formed between two adjacent tooth parts. The opening slot includes a coil slot and a flow passing slot that communicate with each other. The coil slot extends from the tooth top to the tooth root. The coil slot is configured to accommodate a stator coil. The flow passing slot extends from the tooth root to the yoke part. The seal kit is connected to an inner wall of the opening slot. The seal kit and the inner wall of the flow passing slot jointly form a flow passing passage for a coolant to flow through.