US 11,909,277 B2
Motor, power assembly, and motor drive device
Zhenxing Chen, Shenzhen (CN); Guoquan Yu, Xi'an (CN); Wenwu Ma, Dongguan (CN); and Chao Cao, Xi'an (CN)
Assigned to HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by Huawei Digital Power Technologies Co., Ltd., Shenzhen (CN)
Filed on Mar. 30, 2022, as Appl. No. 17/708,792.
Claims priority of application No. 202110354554.1 (CN), filed on Mar. 31, 2021.
Prior Publication US 2022/0255407 A1, Aug. 11, 2022
Int. Cl. H02K 11/40 (2016.01); B60K 1/00 (2006.01); H02K 7/00 (2006.01)
CPC H02K 11/40 (2016.01) [B60K 1/00 (2013.01); H02K 7/003 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A motor comprising:
a housing comprising a space;
a rotating shaft;
a first sealing piece accommodated in the housing and configured to seal a first part of the space to obtain a sealing space;
a second sealing piece cooperating with the first sealing piece to seal the first part to form the sealing space; and
a grounding ring accommodated in and electrically coupled to the housing and the rotating shaft,
wherein the grounding ring is a first conductive structure, and
wherein the grounding ring is located in the sealing space.