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公开(公告)号：US11811290B2
公开(公告)日：2023-11-07
申请号：US17027490
申请日：2020-09-21
Applicant: Jing-Jin Electric Technologies Co., Ltd.
Inventor： Ping Yu , Xinliang Ling , Baojiang Li , Haibin Wang , Minghui Zhang
Abstract: The present disclosure discloses an electric-machine housing, which effectively solves the technical problem in the prior art that electric machines have high NVH level. The electric-machine housing is circumferentially provided with a plurality of axial tunnels, and the tunnels are empty or are filled with a damping medium. The structure in which the tunnels are empty or the tunnels are filled with the damping medium can weaken the excitation to the electric-machine housing by the stator vibration, increase the damping coefficient of the electric-machine housing, weaken the transfer paths of vibration and noise, and reduce the amplitude of electromagnetic force waves, thereby inhibiting vibration and noise, to effectively reduce the overall NVH level.
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公开(公告)号：US20210111606A1
公开(公告)日：2021-04-15
申请号：US17027490
申请日：2020-09-21
Applicant: Jing-Jin Electric Technologies Co., Ltd.
Inventor： Ping Yu , Xinliang Ling , Baojiang Li , Haibin Wang , Minghui Zhang
Abstract: The present disclosure discloses an electric-machine housing, which effectively solves the technical problem in the prior art that electric machines have high NVH level. The electric-machine housing is circumferentially provided with a plurality of axial tunnels, and the tunnels are empty or are filled with a damping medium. The structure in which the tunnels are empty or the tunnels are filled with the damping medium can weaken the excitation to the electric-machine housing by the stator vibration, increase the damping coefficient of the electric-machine housing, weaken the transfer paths of vibration and noise, and reduce the amplitude of electromagnetic force waves, thereby inhibiting vibration and noise, to effectively reduce the overall NVH level.
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