文档介绍：浙江大学电气工程学院硕士学位论文串联锂离子电池组均衡电路的研究姓名:陈晶晶申请学位级别:硕士专业:电力电子与电力传动指导教师:钱照明 20080509 摘要随着锂电池技术的发展和节能环保概念的普及,大容量锂离子电池在大功率场合的应用前景也越来越广阔,比如电动汽车、电动自行车、混合动力汽车、太阳能发电系统等新能源以及航空航天领域。但是锂离子电池组串联使用时容量不均衡的问题大大限制其广泛应用,加入均衡电路是有效的解决方法。尤其是对于大容量的锂电池组,价格昂贵,更是需要有效可靠的均衡电路与均衡策略。可以说,要实现大容量锂离子电池在大功率场合的广泛应用,电池单体的有效均衡是目前的技术瓶颈之一。因此深入研究锂离子电池组均衡电路的关键问题很有意义。本文主要研究了以下几个方面的内容: ,包括均衡拓扑和控制策略。 ,对锂电池的特性做了详细的测试和深入的研究,得出了对均衡有指导意义的结论。介绍了本课题所采用的锂离子电池组均衡电路的工作原理和设计流程,并给出了具体电路和参数设计的结果。 ,提出了新颖的过均衡加滞环控制的方案。最后,给出了实验和仿真结果,验证了方案的可行性。 。关键词:锂离子电池组均衡SOC开路电压 Abstract With thedevelopment oflithium—ionbatterytechnology andthepopularization ofthe concept of energy conservation and environmental protection,the high-capacity lithium-ion batteries have been more and morewildly usedinhi曲power situations,such ars,electric bicycles,hybrid drivenvehicles,photovoltaicpower generation systems---the new energy fieldand theaerospace field. The problem ofcapacity unbalance,which occurs when lithium·ion batteries are seriesconnected,limits anequalization circuitis agood solution, especially fortheexpensive bigcapacity lithium-ionbatteries,which need effectiveand reliableequalization circuitsand control isreasonable tosay that tomake thelarge-capacity lithium—ion batterieswidely used inhighpower situation,effectively equalization in asingle battery is one ofthe current , itismagnificent tohave in·-depthstudy on theequalization circuits ofthelithium·-ion battery pack. The main contents ofthispaper ale asfollowed: parison ofthe current equalizationtechnique for series—connected lithium—ion batteries,including theequalization topology and control strategy. bining谢ttl the need oftheequalization circuits,detailed testsand research on lithium batteries’characteristics havebeen doneandsignificant conclusions forequalization circuitsare drawn. equalization circuitforninelithium—ion batter