A Review of Cell Equalization Methods for Lithium Ion and

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1、AReviewofCellEqualizationMethodsforLithiumIonand对锂离子电池均衡方法LithiumPolymerBatterySystems锂聚合物电池系统StephenW.Moore斯蒂芬·w·摩尔DelphiAutomotiveSystems德尔福汽车系统PeterJ.SchneiderPeterj.施耐德DelphiAutomotiveSystems德尔福汽车系统Copyright©2001SocietyofAutomotiveEngineers,Inc.版权©2001汽车工程师学会,Inc.)ABSTRACT文摘Lithium-

2、basedbatterytechnologyoffersperformance锂离子电池技术提供的性能advantagesovertraditionalbatterytechnologiesatthe传统的电池技术优势costofincreasedmonitoringandcontrolsoverhead.成本增加的监控和控制开销。Multiple-cellLead-Acidbatterypackscanbeequalizedby多个cell铅酸电池可以平衡的acontrolledovercharge,eliminatingtheneedto过度充电控制,消除了需要p

3、eriodicallyadjustindividualcellstomatchtherestofthe定期调整其余的单个细胞pack.Lithium-basedbasedbatteriescannotbeequalized包。基于锂离子电池不能平衡的byanovercharge,soalternativemethodsarerequired.的超载,因此替代方法是必需的。Thispaperdiscussesseveralcell-balancing论述了几种平衡methodologies.Activecellbalancingmethodsremove方法。活动单元格

4、删除平衡方法chargefromoneormorehighcellsanddeliverthecharge电荷从一个或多个高细胞和交付费用tooneormorelowcells.Dissipativetechniquesfindthe一个或多个低细胞。耗散技术发现highcellsinthepack,andremoveexcessenergythrough高细胞包,删除多余的能量aresistiveelementuntiltheirchargesmatchthelowcells.电阻元件,直到他们的指控与较低的细胞。Thispaperpresentsthetheory

5、ofchargebalancing介绍了电荷平衡理论techniquesandtheadvantagesanddisadvantagesofthe技术的优点和缺点presentedmethods.提出了方法。INTRODUCTION介绍LithiumIonandLithiumPolymerbatterychemistries锂离子和锂聚合物电池化学反应cannotbeoverchargedwithoutdamagingactivematerials不能充电而不会破坏活性材料[1-5].Theelectrolytebreakdownvoltageisprecarious

6、ly[1-5]。电解液分解电压不稳定closetothefullychargedterminalvoltage,typicallyinthe接近完全充电终端电压,通常在rangeof4.1to4.3volts/cell.Therefore,carefulmonitoring4.1到4.3伏特/单元。因此,仔细的监控andcontrolsmustbeimplementedtoavoidanysinglecell必须实现和控制,以避免任何单个细胞fromexperiencinganovervoltageduetoexcessive从经历一个过电压由于过度charging.

7、充电。Singlelithium-basedcellsrequiremonitoringsothatcell单锂电池需要监控,这样细胞voltagedoesnotexceedpredefinedlimitsofthe电压不超过预定义的限制的chemistry.Seriesconnectedlithiumcellsposeamore化学。系列锂电池连接构成complexproblem:eachcellinthestringmustbe复杂的问题:字符串中的每个单元格必须monitoredandcontrolled.Eventhoughthepackvo