深海动力磷酸铁锂电池组均衡方案设计优化  

The Design and Optimize of Equalization Schemes for Underwater Power LiFePO4 Battery Stack

作　　者：吕航[1,2] 刘承志[2] 尹栋[2] 林鹏峰 贾俊波 

机构地区：[1]国网四川省电力公司乐山供电公司,乐山614000 [2]西南交通大学电气工程学院,成都610031 [3]淡马锡理工学院清洁能源研究中心,新加坡529757

出　　处：《电工技术学报》2016年第19期232-238,共7页Transactions of China Electrotechnical Society

摘　　要：为提高深海储能装置的长时间安全工作性能,提出了一套深海用的动力磷酸铁锂电池设备的智能电池管理系统(SBMS),重点分析了SBMS中的电池组均衡管理。针对常用基于电感的BuckBoost电路的均衡速度和效率分别提出了两种改进方案。引入模糊控制技术,对实验室深海项目的磷酸铁锂电池组进行了恒流充放电实验,比较不同改进方案的均衡实验效果。将电池均衡的改进方案应用于某微型电动车电池组的实际工况中,验证了改进方案可提高电池组的可用容量。In order to improve life cycle and safety of underwater energy storage equipment, the research provides a smart battery management system （SBMS） for power lithium iron phosphate （LiFeP04） stack, and focuses on the cells equalization circuit. Two optimized schemes have been proposed for the Buck-Boost circuit based on inductors in order to improve performance of the equalizing time and the efficiency. The fuzzy current controller is used in system. A constant current charge-dlscharge experimental study is done on the underwater LiFeP04 stack and comparisons among the performances of three equalizing schemes are carried out. The optimized balancing scheme is implemented on a small electric vehicle, which verifies that the battery stack usage capacity has been improved.

关 键 词：深海储能装置 磷酸铁锂电池 电池管理系统 均衡电路 模糊控制 

分 类 号：TM912.1[电气工程—电力电子与电力传动]