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US 2021/0291634 A1Published application
System for vehicle noise and vibration reduction
AssigneeKarma Automotive LLC
InventorsShashank VIJAY, Melody VO, James KNITTEL
Life of this patent
Estimating the term…
Abstract
A drive module for an electric vehicle having noise, vibration, and harshness counter measures. The drive module includes multiple covers and mass dampeners in order to detune vibration and noise from the cabin of the vehicle.
Claims20
A drive module for a vehicle comprising:
- at least one electric motor configured to drive wheels of the vehicle;
- a gearbox mechanically attached to the at least one electric motor, wherein the gearbox is configured to receive output from the at least one electric motor;
- an inverter configured to provide power for the at least one electric motor from a battery of the vehicle;
- an acoustic wrap configured to dampen noise emitted from the drive module;
- and
- a mass dampener attached to a motor of the at least one electric motor configured to reduce vibration of the drive module.
3 more elements
A vehicle comprising:
- a main propulsive battery;
- a drive module electrically connected to the battery comprising:
- at least one electric motor configured to drive wheels of the vehicle;
- a gearbox mechanically attached to the at least one electric motor, wherein the gearbox is configured to receive output from the at least one electric motor;
- an inverter configured to provide power for the at least one electric motor from a battery of the vehicle;
- an acoustic wrap configured to dampen noise emitted from the drive module;
- and
- a mass dampener attached to the at least one electric motor configured to reduce vibration of the drive module.
5 more elements
A rear drive module for a drive train of an electric vehicle:
- a pair of electric motors each configured to drive a corresponding rear wheel of the vehicle;
- a gearbox mechanically attached to the at least one electric motor, wherein the gearbox is configured to receive output from the pair of electric motors;
- a pair of inverters corresponding to each electric motor configured to convert power from the battery of the vehicle to corresponding motor of the pair of electric motors;
- a first and second acoustic wrap attached to and covering a corresponding electric motor of the pair of electric motors;
- a pair of mass dampeners attached to a corresponding electric motor of the pair of electric motors, wherein the mass dampeners configured to reduce vibration of the drive module;
- and
- wherein the pair of mass dampeners is attached to corresponding mounting points of the vehicle frame.
4 more elements
Dependencies are inferred from the claim text.