The Study of Charge Equalizaiton Control Strategy Based on Resistor Shunt Circuit

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	The Study of Charge Equalizaiton Control Strategy Based on Resistor Shunt Circuit
	Yuan XQ(袁学庆); Zhao Lin
	2014
会议名称	2014 International Academic Conference on the Environment, Energy and Power Engineering (EEPE2014)
会议日期	April 25-26, 2014
会议地点	Changsha, China
关键词	Li-ion battery charge equalization control strategy
页码	75-80
中文摘要	Li-ion battery has been broadly used in industrial and commercial areas in recent years for its advantages of no leaks, no pollution and no noises. As the traditional passive charge equalization scheme only work at late period of the charge process, the imbalance of the battery cells’ SOC (state of charge) may not be equalized in a short time and some cells of the battery string would be overcharged, which could reduce the cycle life of the battery stack. So we presented a new equalization scheme by improving the traditional one. Besides equalizing at late period of the charge process, in the new scheme each battery cell’s SOC is evaluated through voltage gradient, and equalization is applied according to the evaluation result at early period to reduce the SOC imbalance. Both equalization schemes are applied to the same battery stack separately and the OCV(open circuit voltage)-SOC curve shows clearly that the improved scheme could successfully reduce voltage imbalance at early period and no battery cells are overcharged while the traditional one failed to prevent overcharge, which verified the effectiveness of our work.
产权排序	1
会议录	2014 International Academic Conference on the Environment, Energy and Power Engineering (EEPE2014)
语种	英语
内容类型	会议论文
源URL	[http://ir.sia.cn/handle/173321/15352]
专题	沈阳自动化研究所_装备制造技术研究室
推荐引用方式 GB/T 7714	Yuan XQ,Zhao Lin. The Study of Charge Equalizaiton Control Strategy Based on Resistor Shunt Circuit[C]. 见:2014 International Academic Conference on the Environment, Energy and Power Engineering (EEPE2014). Changsha, China. April 25-26, 2014.