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A test bench for variable idle start of electric vehicle transmission system

A technology of transmission system and test bench, applied in the field of variable idle speed starting test bench of electric vehicle transmission system, can solve the problems of difficulty in dynamic load loading, single fixed idle speed, difficulty in implementing motor starting and separation of vehicle body load starting, etc. The effect of superior speed regulation performance, high comfort and high power quality

Inactive Publication Date: 2017-07-07
HUAZHONG UNIV OF SCI & TECH
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  • Claims
  • Application Information

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

Method used

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  • A test bench for variable idle start of electric vehicle transmission system
  • A test bench for variable idle start of electric vehicle transmission system
  • A test bench for variable idle start of electric vehicle transmission system

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Embodiment Construction

[0020] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0021] The invention provides a variable idle start test bench suitable for electric vehicle transmission system, under the conditions of simulated load, speed, road condition changes, etc., respectively test the starting performance of electric vehicles under two modes of rigid fastening connection and clutch flexible connection Index measurement and analysis, and then provide a solution for optimal idle start control of electric vehicles with the goal of high comfort and high quality.

[0022] figure 1 It shows a schematic block diagram of the variable idling start test bench structure of the el...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M17/007
Inventor 辜承林熊平肖楠
Owner HUAZHONG UNIV OF SCI & TECH
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