Matching of power system and optimization of performance on an electric pickup
Based on the performance requirements of a certain electric pickup,the performance parameters of key components of the matching powertrain is calculated,simulation models are built by Cruise M software and validated.By inputting the simulation conditions to calculate the basic transmission system model,the power consumption,0-100 km/h acceleration time,and maximum climbing slope of the model in the China light vehicle test cycle(CLTC-C)condition are obtained.For balancing economy and power,the influence of the transmission on the performance of the complete vehicle is evaluated,and two schemes for optimizing the drive motors are promoted,and the performance of the vehicle before and after optimizing the drive motor at a transmission ratio of 11.8 is compared.The results show that the base scenario uses 3.286 kW·h of power,with acceleration times of 13.33 s from 0 to 100 km/h and a maximum gradient of 33.5％,which does not reach the overall vehicle performance.As the ratio increases,overall vehicle power performance is improved,but economic performance is reduced.With a transmission ratio of 11.8,for scheme 1,the motor peak efficiency is 1.15％higher and the peak torque is 60 N·m higher than the underlying scenario,the peak power increases 20 kW,the power performance of the option one improves and meets the economic requirement but still does not meet the others.For scheme 2,the motor peak efficiency improves by 0.20％,peak torque increases 15 N·m,and peak power increases 21 kW which has improved power and economic performance and meets the specifications.
electric pickup truckpower performanceeconomy performancetransmission ratiodrive motor
NETL
NSTL
万方数据
