储能用锂离子电池管理系统研究

（中国电力科学研究院，北京100192）StudyonLi-IonBatteryManagementSystemofEnergyStorageXUShouping，HOUChaoyong，HUJuan，WANGHuanling，YANGShuili（ChinaElectricPowerResearchInstitute，Beijing100192，China）ABSTRACTLi-ionbatteriesarewidelyutilizedinthehighvoltageandlargecapacityenergystoragebecauseofitsgoodperformance.ThereforethebatterymanagementsystemofLi-ionbatteriesplaysakeyroleinprolongingbattery’scyclelifeandguaranteeingthesafetyoperationofthesystem.BasedoncharacteristicsoftheLi-ionbatteryoftheenergystoragethispaperdiscussesthestructureofthebatterymanagementsystemintroducesthemainfunctionofthesystemespeciallythedataacquisitionofcellestimationofstate-of-chargeandbalancingcontrolinthebatterymanagementsystem.AdvantagesanddisadvantagesofthemethodsofSOCestimationandbalancingmanagementaregivenandtheimplementationstrategiesofthemethodsareevaluated.KEYWORDSenergystorageLi-ionbatterymanagementsystemdataacquisitionofcellestimateofstate-of-chargebalancingmanagement。。、。。、、、[1]。[2]。、、[3]。。、、。。。、———————————————————2011BAA07B07DG71-14-001DG83-14-001。ProjectSupportedbytheStateScienceandTechnologySupportProject2011BAA07B07ScienceandTechnologyProjectofSGCCDG71-14-001theInnovationFoundationProjectofChinaElectricPowerResearchInstituteDG83-14-001.PowerSystemandCleanEnergyVol.30No.5May2014ACleanEnergy1Fig.1Thebasictopologicalgraphoftheenergystorage。1。1。、。CellsupervisioncircuitCSCCSCSlavebatterymanagementunitSBMUSBMUMasterbatterymanagementunitMBMU、BatterymanagementsystemBMS。BMS2。CSCSBMUCSC。SBMUCSC、StateofchargeSOC、StateofhealthSOH。34CSCSBMU。SBMUMBMU、MBMUSOC、、、。CleanEnergy71MBMUCANCAN。MBMU、4SBMUFig.4ThestructureblockdiagramofSBMU2BMSFig.2ThestructureblockdiagramofBMS3CSCFig.3ThestructureblockdiagramofCSCVol.30No.5CleanEnergy72、、SOC、、、MBMU、、、SOC、、、、、、、()。BMS。BMS104TCP/IP。BMSCAN。、BMSBMSBMS。BMSSOC。2、、、、、、、SOC、、、、[5-6]。、3。2.1。。BMSCSCBMSSOC、。BMS。SOC。。1。。2SOC。5OCVOpenCircuitVoltage1mVSOC4%。1mV[4-6]。BMS。LTC680412MOSFET100mA。LTC6804ULTC6804。6LTC6804。CleanEnergy736Fig.6Thecircuitdiagramofthecelldataacquisition2mV0.5℃。2.2SOCSOC、。SOC。SOC。SOC、、[6-8]。1。5OCVmVSOC25℃Fig.5OCVcurvesandtheSOCvariationpermVvoltageofLiFePO4measuredunder25℃SOC、、、SOHOVCVol.30No.5CleanEnergy742AhSOCTab.2TheestimatedSOCvaluecorrespondingtothedifferentAhofthecharginganddischargingdeviceSOC/%12.621.931.34150.960.970.780.690.597.2Ah3672108144180216252288324348.5SOCSOC。Coulombcountingmethod。、SOCSOC[9-10]。SOCSOCt=SOC0+1CNt0乙ηIdτ1SOC0SOCCNIη。SOCSOCt+Δt=SOCt+1CNt+Δtt乙ηIdτ2SOCttSOCICN。、SOC[11]。316SOC。7100ASOC。7SOCSOCIVSOC_AhAhSOC。100A30minSOC3.2%。100A32839Ah348.5Ah。2AhSOC。16h53.44V3.34VSOC95%。SOCΔSOC=97.2%-95%=2.2%。80.3CSOC。7100ASOCFig.7TheSOCvaluecurveofconstantcurrentchargingat100A1SOC[6-7]Tab.1ComparisonoftheSOCestimationmethodsSOC，SOC。SOC：；；；，，SOC，、；，SOC，，，，，，，SOC，SOC，；；CleanEnergy75SOC36AhSOC4.6%19.44Ah30.71Ah。SOC3。336AhSOC9.35%。。。80.3CFig.8Thetestcurveofsteppedchargingat0.3C3SOCTab.3ThecomputedSOCvaluecorrespondingtothedifferentAh019.4455.4491.44127.44163.44199.44235.44271.44307.44338.15SOC4.6%9.6%18.9%28.3%37.8%46.8%55.9%65.0%74.5%84.492.7SOCSOC+2.2%SOC。SOC。SOCSOC5%。2.3、。、、。、。。、、、[12]。、。BMS、、、。、3。。、。。。。。。Vol.30No.5CleanEnergy76。DC/DC12VSBMU12V2A。9。、、、。3BMS。BMS12、、3SOC4。[1].[J].201334773-80.XUShoupingLIXiangjunHUIDong.Areviewofdevelopmentanddemonstrationapplicationoflarge-scaleelectrochemicalenergystorage[J].ElectricPowerConst-ruction201334773-80inChinese.[2].[J].201329894-100.XUShoupingLIXiangjunHUIDong.Asurveyofdevelopmentanddemonstrationapplicationoflarge-scaleenergystorage[J].PowerSystemandCleanEnergy201329894-100inChinese.[3]ARAIJYAMAUCHISetal.Developmentofahighpowerlithiumsecondarybatteryforhybridelectricvehicles[J].JournalofPowerSources20051461-2:788-792.[4]LULanguangHANXuebing.Areviewonthekeyissuesforlithium-ionbatterymanagementinelectricvehicles[J].JournalofPowerSources2013226:272-288.[5].[C]//132011:1051-1055.[6].SOC[J].20105081293-1296.LIZheLULanguangOUYANGMinggao.ComparisonofmethodsforimprovingSOCestimationaccuracythroughanampere-hourintegerationapproach[J].JournalTsinghuaUniversity20105081293-1296inChinese.[7].[J].20062810961-9Fig.9ThebalancingcircuitCleanEnergy77（上接第69页）[8]DINGKunBIANXingaoLIUHaihaoetal.AMATLAB-Simulink-BasedPVmodulemodelanditsapplicationunderconditionsofnonuniformirradiance[J].IEEETransEnergyConvers.2012274:864-872.[9]．[J]．201336793-96．ZHANGJingweiDINGKunBIANXingaoetal.Deve-lopmentofPVmoduleoutdoortestplatform[J].ElectronicMeasurementTechnology201336793-96inChinese．[10].Matlab/Simulink[J].2013291059-65.JIANGZheng.Simulationofthree-phasephotovoltaicgrid-connectedsystembasedonMatlab/Simulink[J].PowerSystemandCleanEnergy2013291059-65inChinese.[11].[J].2014301:68-74.ZHANGMingruiLINChengxinWANGShaoboetal.Modelingandsimulationofgrid-connectedwind/PVhybridgenerationsystem[J].PowerSystemandCleanEnergy2014301:68-74inChinese.[12].Matlab/Simulink[J].2013293:90-96.GAOJunyingGONGXinhuaWANGFeilongetal.ResearchonthesimulationofphotovoltaicsystembasedonMatlab/Simulink[J].PowerSystemandCleanEnergy2013293:90-96inChinese.———————————————————2013-11-18。1975—。（编辑徐花荣）964.LIAOXiaojunH