电动汽车铅酸蓄电池模型建立与参数辨识研究

Research on Model Building and Parameter Identification of Lead-acid Battery for EV

电动汽车用蓄电池是非线性系统,建立动力电池模型的主要目的是预测电池的状态参数,在电动汽车仿真中必不可少。研究不同的电池模型,建立SD-EV2上的铅酸电池二阶RC模型,用最小二乘法进行参数辨识和模型验证,验证结果表明该模型具有较高的精度和动、静态特性。

The battery for electric vehicle is a nonlinear system,the main purpose of establishing the power battery model is to predict the state parameters of the battery,which is essential in the simulation of electric vehicle.The second order RC model of lead-acid battery on SD-EV2 is established.Parameter identification and model verification are carried out by least square method.The verification results show that the model has high accuracy and dynamic and static characteristics.