多重化双向DC／DC在电动汽车快速充电中应用  

Interleaved Bidirectional DC/DC Power Converters in Electric Vehicle Fast Charging Application

作　　者：刘建伟[1] 林少伯[1] 韩民晓[1] 

机构地区：[1]华北电力大学,电气与电子工程学院,北京102206

出　　处：《电力电子技术》2011年第12期45-47,共3页Power Electronics

摘　　要：分析了锂离子电池充放电特性,建立了电池模型,在此基础上,设计了相应的控制策略。针对目前锂电池分段恒流的快速充电方法,设计了多重化双向DC/DC变换器主电路。在完成主电路建模的基础上,为满足对锂电池低压大电流快速充电的要求,设计了合理的控制策略。搭建了Simulink的仿真模型,对比分析了控制策略的合理性。在实验平台下进一步验证,结果表明,系统具有良好的静动态性能和较高的功率密度。This paper analyzes the charging and discharging characteristic of lithium-ion battery, builts common lithium-ion battery model;based on this,corresponding control strategy is developed.According to the current design of piece-wise constant current for fast charging Lithium battery,interleaved bidirectional DC/DC power converters are built.Based on completion of the main circuit modeling,to meet the requirements of low-voltage high-current fast charging lithium battery,the rational control strategies are designed.A Simulink simulation model is built comparative analysis of the control strategy is made.It is proved to be reasonable.Further verification is made on the experimental platform, experimental results show that the system has good static and dynamic performance and high power density.

关 键 词：电动汽车 多重化 低压大电流 互补脉宽调制 

分 类 号：U469.72[机械工程—车辆工程]