一种电动车铅酸蓄电池SOC预测模型及检测系统的设计

针对电动车铅酸蓄电池SOC预测精度低的问题,给出了一种基于模糊预测技术的蓄电池SOC预测模型,该模型利用电动势和内阻结合预测蓄电池SOC。建立了蓄电池电动势、内阻和SOC的隶属度函数,确定了26条模糊控制规则。仿真结果表明,预测值与实际值相对误差最大为5%左右。在此基础上,设计了以C8051F020单片机为中央处理器的铅酸蓄电池组智能检测系统,该系统具有蓄电池SOC预测,端电压、充放电电流等参数在线检测和数据传输等功能。实际车辆试验结果表明,利用这种SOC预测模型可有效的提高预测精度,系统具有参数检测误差小、数据传输可靠性高等特点,具有很好的应用价值。

An EV Lead-acid Battery SOC Forecasting Model and Design of Detection System

According to the low accuracy for forecasting EV Lead-acid battery SOC,a battery SOC forecasting model was given,this model was based on fuzzy prediction technique and forecasted SOC by combing with internal resistance and electromotive force.Membership functions had been established,which were electromotive force membership function,internal resistance membership function and SOC membership function.26 fuzzy control rules were determined in this model.The simulation results show that maximal relative error...