摘要
能量状态(SOE)是电动汽车动力电池的重要状态指标,直接影响电动汽车续航里程,受电动汽车工况显著影响。为进行基于电动汽车工况的SOE估计,对SOE估计方法、行驶工况识别算法、行驶工况预测算法展开研究,建立基于模型的电池剩余能量状态(SOR)估计方法,提出基于信息熵理论的行驶工况识别算法,应用马尔科夫链理论构建了行驶工况预测算法,建立电动汽车系统模型,仿真获取电动汽车预测行驶工况对应的电池预测工况,实现基于电动汽车工况识别与预测的SOE估计。仿真结果验证了该方法的有效性。
State-of-energy （SOE） is an important index of the internal state of electric vehicle traction batteries that determines the range of electric vehicles directly and which is influenced by the driving condition significantly. In order to estimate SOE based on the driving condition, the SOE estimation algorithm, driving condition identification algorithm, driving condition prediction algorithm were studied in this paper. A battery state of residual energy （SOR） estimation algorithm based on battery model was established. A driving condition identification algorithm based on the informational entropy theory was built. A driving condition prediction algorithm was proposed with Markov chain theory. The battery predicted working condition schedule was achieved by modeling the electric vehicle system. In the end, the SOE estimation algorithm based on the identification and prediction of driving condition was achieved. Validation results show that the proposed SOE estimation algorithm was efficient.
出处
《电工技术学报》
EI
CSCD
北大核心
2018年第1期17-25,共9页
Transactions of China Electrotechnical Society
基金
国家重点研发计划资助项目(2016YFB0101801)
关键词
锂离子电池
SOE估计
工况识别
工况预测
电动汽车模型
Lithium-ion battery, SOE estimation, identification algorithm, prediction algorithm, electric vehicle model
