摘要
为了达到规模储能的电压和容量要求,磷酸铁锂电池需通过串并联达到设计要求,而生产、使用过程的差异导致的电池单体不一致性,是影响储能电站寿命的主要因素之一,严重时构成安全隐患。本文从规模储能技术基本概念出发,介绍了现有均衡方案的基本拓扑结构和控制策略,列举了两种实际应用方案,提出了各种方案的优劣与发展趋势,旨在对提高规模储能的经济性研究提供有益的启发。
Series-connected battery stacks are being utilized to supply high voltage in many applications in the scale energy storage. However, series-connected battery stacks are prone to life reduction and potential damage due to chemical differences among cells in stack and differences of charging and discharging circumstance. It affects the life of energy storage power plants, even leads to safety hazard. In this paper, previous battery equalizing schemes was in- troduced based on the common conception of the scale energy storage technology. According to two practical applica- tions ,the different equalizing schemes are compared and the trend of equalizing schemes is proposed to strengthen the economic study of scale energy storage.
出处
《华北电力技术》
CAS
2012年第3期4-10,共7页
North China Electric Power
关键词
规模储能
磷酸铁锂电池
均衡电路
均衡技术
Scale energy storage
Lithium iron phosphate Battery
Equalization circuit
Equalization
