[2005 JPS] Applications of high power density lithium ion batteries.pdf

《[2005 JPS] Applications of high power density lithium ion batteries.pdf》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、JournalofPowerSources146(2005)107110ApplicationsofhighpowerdensitylithiumionbatteriesT.Horibaa,∗,T.Maeshimaa,T.Matsumuraa,M.Kosekia,J.Araib,Y.MuranakabaShin-KobeElectricMachineryCo.,Ltd.,Okabe-machiOhsato-gun,Saitama369-0297,JapanbHitachiResearchLaboratory,Hitachi,Ltd.,Ohmika-choHitachi

2、,Ibaraki319-1292,JapanAvailableonline20June2005AbstractIn2003,wedevelopedanewtypeoflithiumionbatteryforthelightvehicleapplication,inwhich14cellsof7Ahwereintegratedintoabatterypack.Ithasthehighratedischargecapabilityupto5Crate(35A),aenergydensityof74Whkg−1,andthelowtemperaturedischargeca

3、pacityat−5◦Cmorethan90%ofthatat25◦C.Thelifecycletestof100%depthofdischarge(DOD)at35◦Cshowedthecapacityfadingaround10%after500cycles,whichconfirmedmuchlongerpracticallifethan2years.Recently,wehavedevelopedanewhighpowercell.Ithasthecapacityof5.5Ah,andhastheoutputpowerdensityof3000Wkg−1at50

4、%stateofcharge(SOC)andat25◦Cfor5sdischargebasis,andtheinputpowerdensityof2200Wkg−1atthesameconditions.Thenewcellsshowedmuchlessincreaseindirectcurrentresistance(DCR)inboththecyclelifetestandthestoragelifetestthanthecellsdevelopedbefore,whichconsequentlyimpliedmuchlongercalendarlifethano

5、urpreviousonesdevelopedin2000.©2005ElsevierB.V.Allrightsreserved.Keywords:Directcurrentresistance;Lithiumionbattery;Calendarlife1.Introductioniesinmodulebasis.Thehighenergydensityperformanceoflithiumionbatteriesisexplicitlyillustratedinthefigure.Wehavebeendevelopinglithiumionbatteriessin

6、cetheTheplotsofHEVandpure-EVarethosethatwedevel-beginningof1990s,asamemberofnationalprojectofJapan,opedin2000asdescribedabove.ThesetwoplotsprovethatnamedTheDevelopmentofDispersed-TypeBatteryEnergythelithiumionbatteriesareflexibleenoughtobedesignedStorageTechnology.Wehavebeenconcentrating

7、onthefromhighpowerspecificationtohighenergyspecification.manganese-basedpositiveelectrodematerialsintheprojectTheplotoflightvehicleinFig.1correspondstothatwe[1].Byutilizingtheresultsdevelopedintheproject,wehavedevelopedrecentlyanditalsoprovestheflexibilitymentionedreleasedlargecap