一种改进的电动汽车锂电池SOC算法

An Improved SOC Algorithm with Electric Vehicles

本文提出了一种改进的安时积分法来估算电动汽车电池剩余电量(SOC)的方法。在大量实验基础上,分析了影响安时积分法估算精度的参数,采用最小二乘法建立了数学模型以及实现了各参数修正因子,经实验表明,此方法提高了电池SOC计算的精度,达到了电动汽车的应用要求。

This paper puts forward an improved ampere-hour integral method to estimate SOC for Lithium-ion Battery Pack in Electric Vehicle.Based on a large number of experiments, the paper analysis the parameters which affect the estimation accuracy of integral method, then use the least square method to establish the mathematical model and realize the correcuon factor of the parameters.The experiments show that this method improves the accuracy of the battery SOC to the application requirements for electric vehicles.