US 12,266,979 B2
Motor rotor, permanent magnet motor, and electric vehicle
Xiaobo Zhang, Zhuhai (CN); Changguang Guo, Zhuhai (CN); Jinxin Jia, Zhuhai (CN); and Hanxin Wang, Zhuhai (CN)
Assigned to GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI, Zhuhai (CN)
Appl. No. 18/005,951
Filed by GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI, Zhuhai (CN)
PCT Filed Jul. 30, 2021, PCT No. PCT/CN2021/109494
§ 371(c)(1), (2) Date Jan. 18, 2023,
PCT Pub. No. WO2022/110865, PCT Pub. Date Jun. 2, 2022.
Claims priority of application No. 202011381538.3 (CN), filed on Nov. 30, 2020.
Prior Publication US 2023/0283130 A1, Sep. 7, 2023
Int. Cl. H02K 1/28 (2006.01); H02K 1/276 (2022.01)
CPC H02K 1/28 (2013.01) [H02K 1/276 (2013.01); H02K 2213/03 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A motor rotor, comprising:
a rotor core, the rotor core comprising mounting slots;
permanent magnets, arranged in the mounting slots;
wherein an included angle between two mounting slots forming a V-shaped structure in the mounting slots is Δ, a numerical value of a thickness of the permanent magnets is L4 when a unit thereof is mm, and a numerical value of a width of the permanent magnets is L5 when a unit thereof is mm, where 110°≤Δ≤140°, a numerical value of Δ=(18 to 20)*L4, L5≥2*L4.