Performance Simulation And Test Of Battery System Of Electrical Vehicle

With the emergence of energy crisis and environmental pollution, low-emission and energy-conservation car relying mainly on electric vehicle (EV) has been paid attention to and developed. In the earlier period of electric vehicle development, the modeling and simulation with computer has the vital role. As the energy storage system of EV, the battery performance is the important attribute of deciding the entire vehicle performance, However, although the construction of energy storage system is simple and technique content is not much, but ESS work process is a nonlinear change process with multi-input and multi-output and the battery is the integrated system of electricity, chemistry, the thermodynamics, the dynamic characteristic exceptionally complex, therefore the battery modeling and simulation really is the important link and difficult partial of the electric vehicle modeling and simulation. In the practice of scientific research item, the author applies the theory of nnet to the modeling of the battery of EV after further researching, and has received the very good effect.The author briefly introduces the present situation of modeling and simulation of the battery on EV and discusses the modeling strong point of nnet. The modeling object is Lead-acid Battery produced by dayou company. Modeling battery with neural network needs a lot of test data of battery so the author makes a lot of complex experiment on battery. And author study the Lead-acid Battery performance base on the experiments. Then the neural network is obtained using matlab/simulink. the simulation model of the battery system is established. Then the dynamic simulation of a kind of Lead-acid battery is realized, and the results are very good comparison with the experimental result. Also the vehicle simulation is realized based on HEVSIM developed by our automobile institute.Based on the above work, the author has established a set of perfect modeling and simulation system of the battery on EV, and it provides the reliable basis for the simulation of vehicle and the control strategy. The model suits to all liquids electro-chemical battery.