Simulation test stand and simulation method for driving working condition of electric automobile

Abstract

The invention discloses a simulation test stand and a simulation method for a driving working condition of an electric automobile. According to the test stand, a test driving motor is utilized to simulate a motor running state of the electric automobile under a simple working condition and a circulating working condition; a dynamometer which is coaxially connected with the test driving motor is adopted to output a load torque which matches with a resistance experienced by the electric automobile when driving under a simulated working condition; a rotating speed closed-loop control based on a single chip microcomputer is utilized to solve the problem for accurate controlling the rotating speed of the test driving motor under the circulating working condition; and the calibration and closed-loop control for the loading amount of the dynamometer is utilized to improve the matching precision between the load torque output by the dynamometer and the driving resistance under the actual working condition, so that the test driving motor can operate according to the simulated driving condition of the electric automobile. The scale of the test stand is reduced, the research and analysis requirements for power driving systems of different electric vehicles are met, the simulation for different driving working conditions is met, and the application range is wide.

Description

technical field [0001] The invention relates to the field of development and testing of electric vehicles, in particular to a small-scale driving condition simulation and performance testing test bench and a driving condition simulation method. Background technique [0002] The power drive system is the most important part of the analysis and development of electric vehicles, and its performance is directly related to the overall performance of electric vehicles. Therefore, in the process of electric vehicle research and development, the test technology and test conditions of the drive system have an increasing influence on the development of the whole vehicle. At present, there are three main methods of electric vehicle test research: computer simulation research, outdoor road real vehicle test research and indoor bench test research. It is difficult to establish an accurate mathematical model for computer simulation tests, and it is difficult for the data obtained from si...

AI Technical Summary

Problems solved by technology

[0003] However, the existing indoor test platforms have relatively single functions, narrow application range, and poor versatility, such as drive motor performance test benches, power battery system test benches, etc.

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