Johnson Electric S.a.

Johnson Electric International Ag

Yongbin Li

Hai Chen

Xianchun Fan

Jinbao Sun

Xiaowu Xie

Jianguo Guo

Guowei Zhong

Xianming Wu

A brushless direct current motor and a dual clutch transmission employing the motor are provided. The motor includes a stator including stator core and a winding wound around the stator core, and a rotor rotatable relative to the stator. The rotor includes a shaft, a rotor core fixed to the shaft, and a plurality of permanent magnets. The rotor core is fixed to the shaft and includes a plurality of accommodations arranged along a circumferential direction of the rotor. Each of the accommodations substantially extends along a radial direction and an axial direction of the rotor. The permanent magnets are respectively arranged at corresponding accommodations. A relationship of an axial length Lr of the rotor core, an axial length Lm of each of the permanent magnets, and an axial length Ls of the stator core is Lm&#x3e;Lr&#x2265;Ls.

Brushless direct current motor and dual clutch transmission thereof

A permanent magnet DC motor with 2P magnetic poles, where P is an integer greater than 1, comprising a stator () with a plurality of magnetic components, and a rotor () configured to rotate relative to the stator. The rotor may comprise a commutator and a rotor core with a plurality of rotor teeth () defining a plurality of rotor grooves (), wherein the rotor grooves accommodate a plurality rotor windings. In some embodiments, the commutator comprises a plurality m of commutator bars (Z), wherein m is an even number greater than 2. The rotor windings comprises a plurality of coil elements (W), wherein a coil element comprises two ends connecting a pair of commutator bars, such that a first pair of adjacent commutator bars is connected through P&#x2212;1 serially connected coil elements, and a second pair of adjacent commutator bars is connected through P+1 serially connected coil elements.

Modified wave windings for electric motor

Growing community of inventors

Hong Kong, China

Yongbin Li