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公开(公告)号：US20220216772A1
公开(公告)日：2022-07-07
申请号：US17645152
申请日：2021-12-20
Applicant: Huawei Digital Power Technologies Co., Ltd.
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.
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公开(公告)号：US20220209591A1
公开(公告)日：2022-06-30
申请号：US17680616
申请日：2022-02-25
Applicant: Huawei Digital Power Technologies Co., Ltd.
Abstract: Embodiments of this application disclose a stator, a stator manufacturing method, a motor, and an electric vehicle. The stator includes: a stator tooth part, where a plurality of stator tooth parts are arranged at intervals along a circumferential direction; and a stator yoke part, where the stator yoke part is disposed along a circumferential direction of the stator tooth part, and the circumferential direction is a circumferential direction around a central axis of the stator; where the stator tooth part and the stator yoke part are integrally formed by an oriented silicon steel sheet, and a grain direction of the formed oriented silicon steel sheet points to the central axis of the stator along a radial direction. Therefore, the stator tooth part and the stator yoke part are formed by using one material, and there is no need to splice two materials, thereby reducing process costs.
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公开(公告)号：US20240146126A1
公开(公告)日：2024-05-02
申请号：US18492500
申请日：2023-10-23
Applicant: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.
Inventor： Weihua HUANG , Binan LAN , Chao CAO
Abstract: Example rotors, motors, and vehicles are described. One example rotor includes a central core and a plurality of peripheral cores. Each peripheral core is spaced apart from the central core to form a first separation gap, a second separation gap, and a third separation gap that communicate with each other. The first separation gap and the second separation gap are respectively configured to accommodate a first permanent magnet and a second permanent magnet. The first permanent magnet and the second permanent magnet are respectively spaced apart from the sleeve to form a first magnetic isolation gap and a second magnetic isolation gap. Each peripheral core is provided with an open slot for accommodating a third permanent magnet and a fourth permanent magnet.
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公开(公告)号：US20220224197A1
公开(公告)日：2022-07-14
申请号：US17710616
申请日：2022-03-31
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Guoquan YU , Zhenxing CHEN , Wenwu MA , Chao CAO
Abstract: This application provides a motor, including a housing, a shaft bearing, a motor shaft, a first sealing member, a conductive post, a conductive bearing, a second sealing member, and a conductive connecting member. The motor shaft is rotatably installed on the housing through the shaft bearing. A part of the motor shaft is located inside the housing, and the motor shaft has a cavity. The first sealing member, the conductive bearing, the second sealing member, the conductive post, and the conductive connecting member are all located inside the housing. The first sealing member, the conductive bearing, and the second sealing member are located inside the cavity. According to the solutions of this application, the shaft bearing can be prevented from electric corrosion, and reliability of the shaft bearing can be ensured.
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