摘要
电动汽车中动力电池的单体之间会逐渐出现不一致性,从而大大降低电池包的性能和使用寿命。针对此问题提出了一种新颖的基于容量和电压的混合最优控制均衡方案,该方案优先进行容量均衡,同时结合电压均衡对电池组进行混合最优控制,此策略充分利用了两种均衡策略的优点。此外,通过实际工况实验,特别是在针对磷酸铁锂动力电池的均衡应用中,充分证明了该方案相比于传统均衡策略——电压均衡,效率更高、均衡效果更好,能够很好地改善电池单体之间的不一致性,提高电池组的充放电容量。
The inconsistency among the battery cells for electric vehicle affects the performance and life expectancy of the batteries.A mixed optimal control scheme based on capacity balance and voltage balance is proposed.The scheme gives priority to capacity balance,as well as combines with the voltage balance,which makes full use of the advantages of these schemes.In addition,through the practical experiment,especially for lithium iron phosphate battery,it is proved that this strategy achieved higher effi-ciency and better effect than the traditional balance scheme-voltage equilibrium.This strategy can greatly improve the inconsistency among the battery cells and boost the battery capacity.
作者
戴震宇
刘志茹
贾金环
白鸽
赵小路
Dai Zhenyu;Liu Zhiru;Jia Jinhuan;Bai Ge;Zhao Xiaolu(Shanghai Klclear New Energy Technology Ltd.,Power Battery System Research Institute,Shanghai 201208,China)
出处
《电子技术应用》
2019年第3期108-112,共5页
Application of Electronic Technique
关键词
容量均衡
电压均衡
混合最优控制
主动均衡
capacity balance
voltage balance
mixed optimal control
active balance
作者简介
通信作者:戴震宇(1987-),男,硕士,主要研究方向:电动汽车电池管理系统,E-mail:daizhenyu@klclear.com;刘志茹(1977-),女,博士,主要研究方向:动力电池管理系统开发;贾金环(1990-),女,硕士,主要研究方向:电池系统标定。
