电动汽车用磷酸铁锂离子电池的PNGV模型分析.pdf

电动汽车用磷酸铁锂离子电池的PNGV模型分析 张宾1，郭连兑2，李宏义2，陈全世1，崔忠彬z 摘要：以国产新型150Ah磷酸铁锂离子电池为研究对象。分别对其在0℃和30℃的PNGV模型参数进行了辨识。将 其内阻参数与电池直流内阻进行对比分析。考核了磷酸铁锂离子电池的PNGV模型在FUDS工况循环下的仿真精 度。研究表明：由于温度对磷酸铁锂离子电池特性的影响较为显著，PNGV等效电路模型的仿真精度会随着初始温度 的变化有所波动。所以为了保证仿真效果．必须在更多的温度点上进行参数辨识并进行优化；PNGV等效电路模型适 用于城市工况下的仿真。 关键词：电动汽车；磷酸铁锂；锂离子电池；PNGV 912．9 中图分类号：TM 文献标识码：A 文章编号：1002—087 x(2009)05—0417—05 PNGVmodel of Li—ion forelectricvehicle LiFeP04 analysis battery ZHANG Lian—dui2，LI Binl，GUO Hong—yi2，CHENQuan·shil，CUIZhong·bin2 rJ．StateLaberAutomotive Key 100084，China； SafetyEnergy,Tsin助uaUniversity,Beijing 2．PLA Hebei 93792 Unit，Langfang065000,China) new1 Li—ion was theidentificationof Abstract：The 50AhLIFeP04b甜ery studied，and PNGV domesticallyproduced model hadcarriedout at0℃and30℃．The ofjnternaIresistanceandthe parameters separately parameters were andPNGVmodeI’Ssimulation atFUDSdrive DCinternaJresistance test ba廿ery compared precision cycle was researchresultsindicatethatduetotheremarkableinfluenceof onLiFePOdLi—ion inspected．The temperature circuitmodel‘Ssimulation willfluctuatewiththeinitial baRerycharacteristics，PNGViequivalent precision along orderto thesimu