摘要
动力电池均衡是电动汽车应用中的重要技术,目前大多数的均衡拓扑结构与均衡控制策略都将电池组均衡度作为唯一的控制目标,而忽略了能量利用率。文章分析了分布式与集中式均衡拓扑的优缺点,设计出了一种能较好地提高均衡速度的混合型主动均衡拓扑结构,并提出了一种基于转移最少能量达到均衡目的的控制策略。仿真实验结果表明,混合拓扑有效且有实际应用价值,控制策略能有效提高能量利用率,减少均衡损耗。
Power battery equalization is an important technology in the application of electric vehicles. At present, the balance degree of battery pack is the only control criterion in the majority of equalizer circuit and control strategies. The energy utilization rate is ignored. In this paper, a balanced circuit combining the distributed-load balancing and the central-load balancing is designed to improve the bal- ancing speed to a large extent. An equilibrium control strategy based on transferring least energy is al- so put forward. The results of simulation experiment show that the equalization circuit is correct. The control strategy can improve the energy utilization and reduce the loss. This method can be used in practical applications.
出处
《合肥工业大学学报（自然科学版）》
CAS
北大核心
2017年第4期433-437,480,共6页
Journal of Hefei University of Technology：Natural Science
基金
国家国际科技合作专项资助项目(2012DFB10060)
关键词
均衡拓扑
均衡速度
均衡策略
能量损耗
balancing topology
balancing speed
balancing strategy
energy dissipation
