Electrically-driven compressor for vehicle

An electrically-driven compressor for vehicle configured to be installed in an engine, comprising:

• a compression unit in which refrigerant is compressed with rotation of a rotating shaft;
• an electric motor which is coupled to the rotating shaft and drives the compression unit through the rotating shaft;
• a motor drive circuit which drives the electric motor;
• and
• a housing which accommodates the compression unit, the electric motor, and the motor drive circuit aligned in listed order in axial direction of the rotating shaft,
• the housing being internally provided with a discharge chamber through which the refrigerant compressed by the compression unit is discharged,
• the housing including a weight which is attached to the housing and disposed in the discharge chamber in a manner that a resonance frequency of the electrically-driven compressor is shifted relative to a resonance frequency of the engine where the electrically-driven compressor is installed, the weight composed of a material having a specific gravity greater than a specific gravity of a constituent material of the housing.