US 12,170,463 B2
Motor rotor apparatus and motor
Xiaopeng Wu, Shanghai (CN); Yibo Wang, Shanghai (CN); and Gurakuq Dajaku, Neubiberg (DE)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Sep. 10, 2020, as Appl. No. 17/017,151.
Application 17/017,151 is a continuation of application No. PCT/CN2019/070286, filed on Jan. 3, 2019.
Claims priority of application No. 201810535274.9 (CN), filed on May 29, 2018.
Prior Publication US 2020/0412192 A1, Dec. 31, 2020
Int. Cl. H02K 1/30 (2006.01); H02K 1/27 (2022.01); H02K 1/276 (2022.01)
CPC H02K 1/30 (2013.01) [H02K 1/276 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A motor rotor apparatus comprising:
a rotor core comprising:
a first air sub-groove, wherein the first air sub-groove comprises:
a first slot; and
a first tooth is adjacent to the first slot to form a T-shaped sawtooth;
a second air sub-groove coupled to the first air sub-groove to form a first air groove, and configured to accommodate a first permanent magnet;
a second air groove configured to accommodate a second permanent magnet, wherein a first magnetic bridge is formed between the first air groove and the second air groove;
a third air sub-groove symmetrically distributed with the first air sub-groove, wherein a second magnetic bridge is formed between a circumferential surface of the rotor core and the third air sub-groove; and
a fourth air sub-groove coupled to the third air sub-groove to form a third air groove and configured to accommodate a third permanent magnet, wherein the third air groove is symmetrically distributed with the first air groove, and wherein a third magnetic bridge is formed between the second air sub-groove and the fourth air sub-groove;
a first bonding element embedded in the first air sub-groove and comprising:
a second slot engaged with the first slot; and
a second tooth engaged with the first tooth and placed adjacent to the second slot to form the T-shaped sawtooth; and
a second bonding element embedded in the third air sub-groove.