纯电动汽车800 V高电压复合电源能量分配策略研究

基于逻辑门限控制策略,将动力电池和带有理想开关的DC/DC变换器串联,并将串联后的系统与超级电容并联,形成新型复合电源系统,利用低成本小容量超级电容,增大充放电电压,减少系统线路上的能量损耗.同时,采用Matlab/Simulink仿真平台,搭建控制策略模型,结合基于ADVISOR2002建立的复合电源纯电动汽车模型,...

Research on Energy Distribution Strategy of 800 V High-voltage Hybrid Power Supply for Pure Electric Vehicles

Based on the logic threshold control strategy,the power battery was connected in series with the DC/DC converter with ideal switch,and the connected system was connected in parallel with the super capacitor to form a new composite power supply system.The low-cost and small capacity super capacitor was used to increase the charge discharge voltage and reduce the energy loss on the system line.At the same time,the Matlab/Simulink simulation platform was used to build a control strategy model,and combined with the hybrid power pure electric vehicle model established based on ADVISOR2002 for joint simulation.The analysis results show that the proposed new composite power source energy distribution control strategy significantly improves battery capability,reduces operating current,and can effectively extend battery life.