Li-ion-Battery-introduction锂离子电池介绍.ppt

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1、BattreyChemistryFundamentalsandCharacteristicsSinowealthBPwxlCONTENTSIntroduction01Li-ionBatteryFundamentalsandElectricalBehavior02MonitoringandSafety04GeneralBatteryCharacteristics03Page21.2Li-ionBatteryFundamentalsandElectricalBehavior1.2.1BatteryStructure1.2.2Fundament

2、als1.2.3Materialsandtheirinfluences1.2.3Electricalbehavior1.2.4EquivalentcircuitPage3Li-ionBatteryStructureCylindricalLi-ionBatterystructureSeparator,cathodeandanodearearoundthecolumn.Page418650Li-ionBatteryStructurePrismaticLi-ionBatteryStructurePage5Li-ionBatteryStruc

3、tureCoinLi-ionBatterystructurePage6Li-ionBatteryStructureThinFilmLi-ionBatteryStructure10-100umthinkness.formicrominiaturedevicePage7Li-ionBatteryStructurePage8Li-ionBatteryStructureLi-ionBatteryStructure:AnodeCathodeSeparatorElectrolyteEnclosureandpackagecomponentmater

4、ialexampleAnodeLi-embeddedTransitionmetaloxidesLiCoO4,LiMnO4,LiCoMnOx,LiFePO4CathodeLi-embeddablecompoundetc.(synthetic)graphiteElectrolyteLiPF6alkylacidestersEC,PC,EDCSeparatorpolyeneporousmembranePE,PP,PP/PE/PPEnclosureandpackagemetalsteel,aluminumPage9Li-ionBatteryPerf

5、ormancerequirementsofanodematerialshighspecificenergyhighspecificpowerlowself-dischargeratiolowcostlonglifehighsafetylevelPage10CapacityCalculation：1molLi+,Q=96500C（F=NA*e=96500C/mol）1C=1AsTakeLiFePO4forexample:TheformulaweightofLiFePO4is157.756g/mol,(1g/157.756g/mol)*965

6、00C/mol/3600s=170mAh/gTheformulaweightofLiCoO2is97.88g/mol,(1g/97.88g/mol)*96500C/mol/3600s=274mAh/gLi-ionBatteryCapacityCalculationforAnodePage11LiFePO4LiMnOxLiCoO2LiNiO2LiNiCoMnO2maincomponentLiFePO4LiMn2O4LiMnO2LiCoO2LiNiO2LiNiCoMnO2ennergydensity(mAh/g)170ideal1482862

7、74274278130-140actual100-120200135-140190-210155-165voltage（V）3.2-3.73.8-3.93.4-4.33.62.5-4.13.0-4.5cyclelife＞2000＞500inferior＞300inferior＞800transitionmetalveryrichrichrichpoorrichpoorenvironmantalnon-poisonousnon-poisonousnon-poisonousradioactivity(Co)poisonous(Ni)poison

8、oussafetygreatgoodgoodbadbadnotbadtemp(℃)-20～75<50lowtempstable-20～55N/A-20～55Li-ionBatte