A model based method which recruited the extended Kalman filter （EKF） to estimate the full state of charge （SOC） of Li-ion battery was proposed. The underlying dynamic behavior of the cell pack was described based...A model based method which recruited the extended Kalman filter （EKF） to estimate the full state of charge （SOC） of Li-ion battery was proposed. The underlying dynamic behavior of the cell pack was described based on an equivalent circuit comprising of two capacitors and three resistors. Measurements in two tests were applied to compare the SOC estimated by model based EKF estimation with the SOC calculated by coulomb counting. Results have shown that the proposed method is able to perform a good estimation of the SOC of battery packs. Moreover, a corresponding battery management systems （BMS） including software and hardware based on this method was designed.展开更多
针对燃料电池混合动力汽车(Fuel Cell Hybrid electric Vehicle,FCHV)在频繁变载、启停、连续低载和怠速工况下燃料电池寿命衰减的现状,提出基于模糊控制与开关控制的滑动平均滤波复合能量管理策略,该复合能量管理策略以整车需求功率与...针对燃料电池混合动力汽车(Fuel Cell Hybrid electric Vehicle,FCHV)在频繁变载、启停、连续低载和怠速工况下燃料电池寿命衰减的现状,提出基于模糊控制与开关控制的滑动平均滤波复合能量管理策略,该复合能量管理策略以整车需求功率与燃料电池高效区下限之差和蓄电池SOC为模糊输入量,在有效避免燃料电池启停、连续低载和怠速工况的同时,通过开关控制可避免蓄电池过充产生的安全问题,通过滑动平均滤波控制可以改善燃料电池在频繁变载工况下耐久性差的问题。采用AVL Cruise软件和Matlab/Simulink软件进行联合仿真,仿真结果表明,提出的复合能量管理策略在保证蓄电池安全性的情况下,减少了引起燃料电池寿命衰减的工况,提升了燃料电池的耐久性。展开更多
文摘A model based method which recruited the extended Kalman filter （EKF） to estimate the full state of charge （SOC） of Li-ion battery was proposed. The underlying dynamic behavior of the cell pack was described based on an equivalent circuit comprising of two capacitors and three resistors. Measurements in two tests were applied to compare the SOC estimated by model based EKF estimation with the SOC calculated by coulomb counting. Results have shown that the proposed method is able to perform a good estimation of the SOC of battery packs. Moreover, a corresponding battery management systems （BMS） including software and hardware based on this method was designed.
