电动汽车续驶里程动态估算及影响因素研究

Research on Remaining Driving Range Estimation and Factors Influencing of Electric Vehicle

该文根据纯电动汽车动力系统数学模型,使用Simulink软件进行汽车动力系统建模;采用安时积分法进行电池SOC估算;研究分析续驶里程动态估算算法,使用Simulink软件建立续驶里程动态估算模型。通过仿真进行纯电动汽车续驶里程的动态估算,并且对产生误差的影响因素进行分析,最后对误差分析进行实车验证。仿真结果表明,平均误差为0.23 km,相对误差在4%以内,实车验证符合误差分析结果。

Based on the mathematical model of the dynamical system,Simulink is utilized to develop the dynamical model of EV. Ampere-hour integration approach is applied to estimated the state of charge(SOC). A dynamic algorithm estimating driving range is discussed and the calculating model is built via Simulink. The dynamic estimation of EV's driving range is obtained,the factors lead to estimation errors are analyzed and then the analyzing results are verified according to the test EV. As the simulation results shows,the average error is 0.23 km,with relative error within 4%.The verification of the test EV is also conform to the error analysis results.