电动汽车动力性与能耗经济性参数灵敏度分析

建立了电动汽车动力性和能耗经济性的计算数学模型.根据该模型提出了汽车总质量、传动系机械效率、滚动阻力系数和空气阻力因数等参数对电动汽车动力性和能耗经济性影响程度的参数灵敏度计算方法,并对某电动汽车的动力性和能耗经济性进行了参数灵敏度分析.分析结果表明:传动系效率的取值对最高车速、加速时间、加速能耗的影响均较大.研究结果为电动汽车动力系统的参数设计与优化,改善纯电动汽车的动力性和能耗经济性提供了依据.

Parameters Sensitivity Analysis of Dynamic Performance and Energy Consumption Economy of Battery Electric Vehicle

The calculation mathematical model of the dynamic performance and the energy consumption economy of battery electric vehicle was established.Total mass,mechanical efficiency of transmission system,rolling resistance coefficient and air resistance factor of battery electric vehicles have different effects on the dynamic performance and energy consumption economy,the calculation method of parameter sensitivity of their influence extent was proposed according to the model.The parameter sensitivity analysis of the dynamic performance and the energy consumption economy was also conducted on a battery electric vehicle.The results show that the value of transmission efficiency has a greater influence on the maximum speed,acceleration time and energy consumption.The conclusions provide a basis for the parameter design and optimization of the dynamic system,as well as the improvement of the dynamic performance and the energy consumption economy of battery electric vehicle.