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

IPC: H02K11/40 ,  H02K7/00 ,  B60K1/00

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.

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

IPC: H02K11/40 ,  B60K1/00 ,  H02K7/00

CPC classification number: H02K11/40 ,  B60K1/00 ,  H02K7/003

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.