To improve the operational efficiency of components in a heavy-duty pure electric commercial vehicle and reduce energy consumption,energy flow tests are conducted on a hub dynamometer under four steady-state conditions at speeds of 80,60,and 40 km/h.The results indicate that the battery charge and discharge efficiency ranges from 92%to 95%,demonstrating stable and high efficiency.The microcontroller operates at an efficiency of 94%to 98%,while the motor output efficiency is between 91%and 96%,with a motor energy recovery efficiency of approximately 94.37%,indicating normal motor operation.The conversion efficiency of the DC voltage converter is above 85%,which is at a high level.The energy consumption of the oil pump in a stationary state is relatively high at 0.39 kW,while the energy consumption of other accessories is normal.Optimization measures for the oil pump include reducing pump pressure,optimizing system structure,and minimizing pipe resistance.
关键词
纯电动商用车/能量流/能耗优化
Key words
pure electric commercial vehicle/energy flow/energy consumption optimization
维普
万方数据