Research On The Matching Of Engine And Power Batteries For HEV

With the rapid development of hybrid technology used in military and civilian vehicles,different forms of the hybrid electric vehicle are being improved for different purposes. Electro-mechanical transmission tracked vehicles developed countries compete to become hot. In this paper, a kind of Hybrid Electric Vehicle with Electro-mechanical transmission system is taken for the study, the influence of the parameter of engine, battery and motor to the vehicle dynamic performance is researched. A matching method is proposed for different design requirements.The dynamic performance requirement, such as the maximum speed, maximum grad ability and the acceleration time from 0 km/h to 32 km/h, is affect by the parameters of engine, motor and batteries. How the parameters influence the requirement in the steady-state is studied and maximum speed or maximum grad ability can be confirm in the steady-state is summarized while the acceleration timecannot be confirmed in the steady-state. It needs a new method to calculate the acceleration time.Based on the MATLAB software platforms, Simdriveline and Simpowersystem are used to build the model of thevehicle. A Design of Experiments(DOE) is used for the analysis of parameters’ influence on the acceleration time based on the Isight software composited with MATLAB. A quadratic regression model is fitted for the calculation of acceleration time.Based on the Isight and MATLAB software platforms, an optimization model is built for the multi-objective optimization with different design requirements. An example has been calculated and verified. So the matching method is testified reasonable.According to the upper analysis, a GUI is designed to realize many functions. Steady-state analysis and dynamic acceleration simulation can be realized by using the designed GUI program, matching analysis can be also used with this GUI program.