Variable idling start test bed for electric car transmission system

Abstract

The invention discloses a variable idling start test bed for an electric car transmission system, and the test bed comprises a control power supply, a DC motor, a shaft coupler, a rotation speed and torque sensor, a clutch, a spline shaft, a brake disc, mechanical braking devices, a DC generator, and a resistor box. The control power supply is connected to the DC motor, and the rotation speed and torque sensor is connected with the DC motor through the shaft coupler. An output shaft of the rotation speed and torque sensor is connected with a driving disc of the clutch, and a driven disc of the clutch is connected to a side of the spline shaft, wherein the other side of the spline shaft is in series connection with the brake disc. The mechanical braking devices are disposed at two sides of the brake disc. The DC generator is connected with the shaft coupler, and is connected to a test bed transmission system. The resistor box is connected to an armature loop of the DC generator in a series manner through a wire. The clutch is disposed in a transmission shaft system in fixed connection with a conventional electric car test bed, thereby forming a flexible connection mode of a transmission system. Moreover, the idle speed can be adjusted, the loading is flexible, the operation and control are simple, and an impact-type load is easy to simulate on the test bed, and the test bed is suitable for actual driving and road conditions.

Description

technical field [0001] The invention belongs to the field of testing of electric vehicle transmission systems, and more particularly relates to a variable idling start test bench for electric vehicle transmission systems. Background technique [0002] The existing driving modes of electric vehicles are usually divided into centralized driving and wheel-hub driving. Among them, the wheel-hub driving with simple structure and flexible control is a new direction for the current development of electric vehicles. At present, the powertrain of electric vehicles is mainly debugged on the whole vehicle. There are problems such as long installation period, complicated test process, and heavy troubleshooting workload. Stable, there are security risks. The electric vehicle transmission system test bench is an important tool to study its dynamic performance. The traditional centralized powertrain includes transmission mechanisms such as gearboxes and differentials. The transmission cha...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defects of the prior art, the purpose of the present invention is to provide a test bench for variable idle speed start of the electric vehicle transmission system, which aims to solve the problem of single fixed idle speed in the current test bench, the difficulty of dynamic load loading, and the difficulty in implementing motor starting and Body load separation problem at start

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