Damping system for an e-charger

An electrically driven compressor assembly comprising:

• a shaft;
• a compressor wheel that is supported on the shaft;
• an electric motor with a stator and a rotor, the electric motor configured to rotate the shaft and the compressor wheel;
• a housing assembly that houses the stator, the rotor, and at least part of the shaft, the housing assembly including a first member and a second member, the first member including an open end, the second member at least partly covering the open end, a first inner diameter surface of the first member opposing a second outer diameter surface of the second member, the first member including a first face that faces in a first longitudinal direction relative to an axis of rotation, and the second member including a second face that faces in a second longitudinal direction relative to the axis of rotation;
• a bearing that is attached to the second member of the housing assembly and that is attached to the shaft, the bearing supporting the shaft for rotation relative to the second member about the axis of rotation;
• a dampener disposed between and abutting the first inner diameter surface of the first member and the second outer diameter surface of the second member of the housing assembly, the dampener configured to elastically deform to provide dampening of a radial force transferred between the first member and the second member of the housing assembly with respect to the axis of rotation;
• wherein the dampener abuts the first face of the first member and abuts the second face of the second member;
• and
• wherein the dampener is configured to deform to provide dampening of a longitudinal force that is transferred longitudinally between the first member and the second member.

A method of manufacturing an electrically driven compressor assembly comprising:

• providing a first member and a second member of a housing assembly, the first member including an open end;
• supporting a shaft on the second member for rotation relative to the second member about an axis of rotation with a bearing, the bearing attached to the second member and attached to the shaft;
• supporting a compressor wheel on the shaft;
• housing an electric motor within the first member and the second member of the housing assembly, the second member at least partly covering the open end of the first member and a first radial surface of the first member opposing a second radial surface of the second member, a first face of the first member facing in a first longitudinal direction relative to the axis of rotation, a second face of the second member facing in a second longitudinal direction relative to the axis of rotation, the electric motor configured to rotate the shaft and the compressor wheel;
• and
• attaching the first member and the second member together with a dampener between the first radial surface of the first member and the second radial surface of the second member, including abutting the dampener against the first radial surface of the first member, the second radial surface of the second member, the first face of the first member, and the second face of the second member;
• and
• the dampener configured to elastically deform to provide dampening of a radial force transferred between the first member and the second member of the housing assembly with respect to the axis of rotation.