中文摘要：

针对磷酸铁锂动力电池利用二阶等效电路模型建立电池动态模型,考虑电池的电势及温度特性,分析在不同充放电倍率下对电池模型参数的影响。基于新威BT400测试电池离线数据,采用遗传算法改进后的系统辨识获得全局最优解。实际实验得出,通过离线数据对辨识参数进行验证最大误差为1.2%,能较好地反映出电池的动静态特性。

英文摘要：

The dynamic battery model is based on second-order equivalent circuit model to lithium iron phosphate power battery,which concerning with battery electric potential and temperature characteristics,is to analyze the effects on battery model parameters with different charge and discharge rate.Besides, it obtains global optimal solution with the system improved by genetic algorithm on the base of offline data of new power BT400 test battery.Additionally, by these off-line data the maximum error of the identification parameters is verified to be 1.2% ,which can reflect the dynamic and static characteristics of the battery better.