ELECTRIC-MACHINE STATOR LAMINATION, ELECTRIC-MACHINE STATOR IRON CORE AND ELECTRIC MACHINE

• Main Authors: YU, Ping, LI, Baojiang, CHENG, Yi, WANG, Haibin, SU, Yixue
• Format: Patent
• Language: English; French; German
• Published: 13.04.2022
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION

The present disclosure discloses an electric-machine stator lamination (1), an electric-machine stator iron core and an electric machine, which effectively solves the technical problem in the prior art that electric machines have high NVHs. The yoke of the electric-machine stator lamination (1) is circumferentially provided with a plurality of axial tunnels (6), and the tunnels (6) are empty or are filled with a damping medium. The electric-machine stator iron core is formed by laminating a plurality of the electric-machine stator laminations (1) or is integrally manufactured. The electric machine includes an electric-machine housing (4) and the electric-machine stator iron core, the outer circumference of the electric-machine stator iron core and an inner wall of the electric-machine housing (4) have gaps (5) therebetween, and the gaps (5) are empty or are filled with a damping medium. The structures in which the gaps (5)/tunnels (6) are empty or the gaps (5)/tunnels (6) are filled with a damping medium can weaken the vibration energy generated by the stator to the electric-machine housing (4), increasing the damping coefficient of the electric-machine housing (4), reduces the response amplitude/frequency of the electric-machine housing (4), weaken the paths of the vibration/noise transmission , and reduce the response amplitudes, thereby inhibiting vibration and noise, to effectively reduce the overall NVH level.