-
公开(公告)号：US11863029B2
公开(公告)日：2024-01-02
申请号：US17645152
申请日：2021-12-20
Applicant: Huawei Digital Power Technologies Co., Ltd.
CPC classification number: H02K11/40 , H02K5/15 , H02K5/1732 , H02K7/003
Abstract: Embodiments of this application provide a motor rotor, a motor, and a vehicle. A conductive pillar passes through an inner ring of a conductive bearing, an outer wall of the conductive pillar interference fits with the inner ring of the conductive bearing, and an end of the conductive pillar is grounded. In this way, it is ensured that a shaft current on a rotor body is discharged by using the conductive bearing and the conductive pillar, to prevent a main bearing of the motor rotor from being electrically corroded by the shaft current. In addition, the conductive bearing is sleeved on the grounded conductive pillar, so that the inner ring of the conductive bearing can interference fit with the outer wall of the conductive pillar.
-
Patent Agency Ranking
公开(公告)号：US11909277B2
公开(公告)日：2024-02-20
申请号：US17708792
申请日：2022-03-30
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Zhenxing Chen , Guoquan Yu , Wenwu Ma , Chao Cao
Abstract: A motor includes a grounding ring and a first sealing piece, or includes a grounding ring, a first sealing piece, and a second sealing piece. The grounding ring is electrically coupled to a rotating shaft and a housing. The grounding ring is made of a material with good conduction performance, hence, a shaft induced voltage transmitted on the rotating shaft is transmitted to the housing through the grounding ring, instead of being transmitted to the housing through a motor bearing.
-
公开(公告)号：US12113421B2
公开(公告)日：2024-10-08
申请号：US17457390
申请日：2021-12-02
Applicant: Huawei Digital Power Technologies Co., Ltd.
IPC: F16C19/06 , F16C35/077 , H02K5/173 , B60K1/00
CPC classification number: H02K5/1732 , F16C19/06 , F16C35/077 , B60K2001/001
Abstract: This application describes a motor that includes a housing, an output shaft, a conductive bearing, and a conductive component. The output shaft is disposed in the housing. A positioning hole is disposed on an end face of a first end of the output shaft, and the positioning hole is disposed coaxially with the output shaft. The conductive bearing is disposed in the positioning hole, and includes an inner ring, and an outer ring that is fixedly connected to the output shaft. One end of the conductive component is fixedly connected to the inner ring of the conductive bearing, and the other end is connected to the housing. In this application, the motor can output, by using the conductive bearing and the conductive component, charges accumulated in the output shaft, to eliminate a generated common-mode voltage.
-
公开(公告)号：US12038082B1
公开(公告)日：2024-07-16
申请号：US18339394
申请日：2023-06-22
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Wenwu Ma , Yi Cao , Maojie Ren , Jinsong Zhang
CPC classification number: F16H57/0476 , B60K1/00 , F16H57/0436 , F16H2057/02034 , F16H2057/02043 , F16H57/0486
Abstract: A control method and apparatus may be applied to an electric drive system. The electric drive system includes an oil pump, a motor, a reducer, and a housing, the motor and the reducer are disposed in the housing, lubricating oil is stored in the housing, and the oil pump is configured to pump the lubricating oil. The method includes: obtaining a first rotational speed of the motor, a second rotational speed of the oil pump, and a temperature of the lubricating oil in the housing; and controlling a rotational speed of the oil pump to be a third rotational speed based on the first rotational speed, the second rotational speed, and the temperature. In this way, the rotational speed of the oil pump can be adjusted to change liquid levels of the lubricating oil in a cavity and oil pump power at different rotational speeds of the oil pump.
-
公开(公告)号：US20230249537A1
公开(公告)日：2023-08-10
申请号：US18300674
申请日：2023-04-14
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Wenwu Ma , Xiaode Yin
CPC classification number: B60K7/0007 , B60K1/02 , B60K2001/001
Abstract: In a vehicle drive system, a hybrid drive manner of dual hub drive assemblies and a centralized drive assembly/dual independent drive assemblies are used. When the vehicle travels at a constant speed with a small torque, the dual hub drive assemblies are used to drive the vehicle. When the vehicle accelerates startup or accelerates to overtake, a large torque is required, and the centralized drive assembly/dual independent drive assemblies is/are used to drive the vehicle, or the centralized drive assembly/dual independent drive assemblies and the dual hub drive assemblies are used together to drive the vehicle. Therefore, the vehicle drive system provided uses the hybrid drive manner of dual hub drive assemblies and the centralized drive assembly/dual independent drive assemblies.
-
公开(公告)号：US20220255407A1
公开(公告)日：2022-08-11
申请号：US17708792
申请日：2022-03-30
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Zhenxing Chen , Guoquan Yu , Wenwu Ma , Chao Cao
Abstract: This application provides a motor, a power assembly, and a motor drive device. In this application, the motor includes a grounding ring and a first sealing piece, or includes a grounding ring, a first sealing piece, and a second sealing piece. The grounding ring is electrically connected to a rotating shaft and a housing. Because the grounding ring is made of a material with good conduction performance, a shaft induced voltage transmitted on the rotating shaft can be transmitted to the housing through the grounding ring, instead of being transmitted to the housing through a motor bearing, thereby avoiding bearing electric corrosion of the motor bearing.
-
-
-
-
-
Search Results
6
records
(took 0.02 seconds)
