SOC Estimation of Lithium-ion Battery Packs Based on Thevenin Model

摘要：

　　Due to the immeasurability of SOC in battery and inevitability of error in current collection,SOC estimation of Lithium-ion battery has become a focus of EV research.With Thevenin equivalent circuit model,this paper employs EKF algorithm to estimate SOC,which takes into consideration both precision requirement of the estimation and amount of computation involved in online estimation.Based on above-mentioned objcctives and principles,a test platform composed of Digatron battery test system and thermostat was built.Experimental result has confirmed that the combination of EKF algorithm with Thevenin model can improve precision and reduce amount of computation.

关键词： lithium-ion battery EKF SOC estimation Thevenin model

作者: Yuanqi Fang Ximing Cheng Yilin Yin

作者单位: National Engineering Laboratory for Electric Vehicle, Beijing Institute of Technology, Beijing, China

会议类型: 国际会议

会议名称: 2012 International Conference on Mechanical Engineering,Industrial Electronics and Informatization(MEIE2012)(2012机械工程、工业电子与信息化国际会议)

会议地点: 秦皇岛

会议语种:英文

页码: 211-215

在线出版日期: 2012-12-28（万方平台首次上网日期，不代表论文的发表时间）