Torque limiter having electrically insulating protective component, and drive train having torque limiter

Abstract

The invention relates to a torque limiter (1) for a drive train of a motor vehicle, comprising a torque input component (2) for transmitting a torque of an electric motor (3) in the direction of a transmission (4), a slip clutch (5) having lamellae (6) that can be brought into frictional contact for the purpose of limiting peak torques, wherein an input lamella carrier (7) of the slip clutch (5) is connected to the torque input component (2) in a rotationally fixed manner, and a torque output component (8) for relaying the torque to the transmission (4), wherein the torque output component (8)is connected to an output lamella carrier (9) of the slip clutch (5) in a rotationally fixed manner. The output disc carrier (9) of the slip clutch (5) and the torque output component (8) are electrically insulated from one another via a protective component (10) interposed in the torque flow. The invention further relates to a drive train for a motor vehicle.

Description

technical field [0001] The invention relates to a torque limiter suitable for use in a powertrain of a motor vehicle, said torque limiter having a torque input member for transmitting electric motor torque in the direction of the transmission; a friction plate placed in frictional contact, wherein the input plate carrier of the slip clutch is connected in a rotationally fixed manner to the torque input member; and has a torque output member for transmitting torque to the transmission, Wherein, the torque output member is connected to the friction plate support at the output end of the slip clutch in a torsion-resistant manner. The invention also relates to a drivetrain suitable for a motor vehicle with such a torque limiter. Background technique [0002] In modern electric motors used to drive motor vehicles there is often the problem that the electric motor is controlled by means of a frequency converter and high clock frequencies in the range of 20kHz and higher are used ...

AI Technical Summary

Problems solved by technology

[0004] Another problem in electric vehicles is that, unlike conventional vehicles such as internal combustion engine drives or hybrid vehicles, electrically driven vehicles for pure vehicle operation do not require a starting clutch for limiting the impact torque of the wheels, which Simultaneously acts as a slipping clutch due to slipping in overload situations

[0006] Therefore, the background art always has the disadvantage that shocks and overload moments are not adequately limited and the electrical connection between the output shaft and the input shaft is not allowed in the electric drive system of the motor vehicle, or that in a compact design the existing structures There is not enough space for the insulated connections described in the background

Additionally, replacement of worn insulation elements inside the motor or transmission is cumbersome and expensive

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