锂离子电池简化电化学模型:浓度分布估计

被引:29
作者
袁世斐
吴红杰
殷承良
机构
[1] 上海交通大学汽车电子控制技术国家工程实验室
关键词
简化电化学模型; 修正边界条件; Pade逼近技术; 传递函数; 电解液浓度估计;
D O I
暂无
中图分类号
TM912 [蓄电池];
学科分类号
080802 [电力系统及其自动化];
摘要
为了降低锂电池电化学模型的计算复杂度,提出基于修正边界条件的简化电化学模型,用于估计锂电池内部的电解液浓度分布.采用Pade逼近技术分析简化电化学模型解析解,可得到降阶的分子-分母型传递函数模型.分别采用19.38A和193.80A的脉冲充放电工况进行仿真对比,结果显示所提出简化模型的最大相对误差分别约为0.867%和8.670%.时域和频域模拟仿真结果表明:相比于传统电化学模型,该简化模型对电池内部电解液相的浓度分布估计具有理想的精度,同时计算复杂度得到显著优化,具备实时应用的能力.
引用
收藏
页码:478 / 486
页数:9
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