德州仪器功率电池管理解决方案

1CONFIDENTIALTexasInstrumentsHCEBMS德州仪器功率电池管理解决方案Nov.2010AndrewSu2CONFIDENTIALTexasInstrumentsBMSsegments––HighCellCount&Emerging(3SHighCellCount&Emerging(3S--192S)192S)–E-Tools&UPSSystemsIncludesNickel,Pb-Acid,&Lithium–ElectricTransportationEV/HEV,E-Bike,E-Motor•Notebook(2S-4S)–Laptops,Notebooks,NetBooks(HP,Dell,Apple,Asus,Acer,Lenovo….)•Hand-Held(1S-2S)–SmartPhone(Nokia,RIM,Apple)&e-book(Amazon,Barnes&Noble),TabletPC(Apple…)•Chargers(1S-6SDC:DC)–SingleCell,MultiCell,&WirelessGrowthArea3CONFIDENTIALRequirementsforHCEbattery–Highenergydensity–Highsafety(nonflammable,nonexplosive)–Standwithhighdischargingratioandhighchargingcurrent–Chemistrystability–Longlifecycle–Stableoutputvoltage–Wideworkingtemperaturerange–Pollutionfree–Lowcost4CONFIDENTIALLiFePO4BatteryAgainstOtherBatteriesGenericLithiumBatteryPowerLithiumBatteryLiFePO4BatteryUnitandtestconditionRatedVoltage3.6or3.73.6or3.73.2VWorkingVoltage3.0~4.23.0~4.23~3.3VCapacityDensityoverWeight180130130mAh/gEnergyDensityoverWeight90~11060~7560~75Wh/kgEnergyDensityoverVol.280~300220~240220~240Wh/lOptimizedChargeRate0.2~0.50.5~1.00.5~1.5CMaxdischargeRate1.5510CPulsedischargeRate21020CCycleLife60%(100cycles)85%(300Cycles)95%(500Cycles)1CCharge,2CdischargeCycleLifewithbigdischargecurrent-60%(300Cycles)80%(300cycles)1CCharge,5CdischargeSafetyFlammable,ExplosiveFlammable,ExplosiveNonflammable,Nonexplosive-0-Voltage30DaysStoragePossibilityofdamageandleakagePossibilityofdamageandleakageNodamage,Noleakage-5CONFIDENTIALDischargingCurveofLiFePO4Battery摘引自《今日电子》6CONFIDENTIALTIHCEProductFocus1.StackableSecondaryProtection•Over-VoltageFuse/FETActivation•BackupProtectionforOVandOpen-CellFailures2.Stand-AloneAFE•ProvidesallProtection&BalancingFunctions•DrivesProtectionMOSFETsDirectly3.Host-ControlledAFE•AllowsCustomizationofOperationwithCPUFirmware•MayContainVcell&IpackOutputsforMonitoring&Gas-Gauging•DrivesProtectionMOSFETsorMayRequireExternalDriver•SinglePackageSolutionsfor10cells&StackableOptionsfor10cells4.FullSystemGauge&AFE:•All-in-oneSolution:StackableProtection,Balancing,&Gauging•SomeincludeSecondaryProtection(FuseActivation)•AdvancedDataLogging&CommunicationsFeaturesSimpleAdvanced7CONFIDENTIALTIHCEProductFocusSMBusGaugewithProtection&ActiveBalancing•3to12Li-IonCells•Gauging•OV,UV,OT,SC,OC,OPDetection•PowerPumpTech•OpenCellDetect•Adv.SafetyFeatures•48-pinQFN('PL114)•16-pinQFN('PL102)AvailableNowOVProtector•3to6LiCells•Stackableto18+Cells•IncludesPhosphate•NFETOutputDrive•PreciseOVDetect•CellImbalanceDetect•RecoverableorLatchedOutput•Ultra-LowPowerConsumption•16-pinSSOPbq77PL157bq77PL157ProtectorProtectorFETDriveAvailableNowAdv.ProtectorwithBalancing•Stand-AloneOnly•4to10LiCells•IncludesPhosphate•OpenCellDetect•OV,UV,OT,SC,OCD,OCCDetect•AutomaticBalancing-50mAInternal•NFETDirectDrive•3.3VVregOutput•38-pinSSOPbq77910bq77910ProtectorProtectorFETDriveBalancingRTP3Q10bq78PL114bq78PL114bq76PL102bq76PL102BalancingSecondaryProcessorGasGaugeMonitorBalancing2ndProtectorbq76PL536HEV/EVMonitor&ProtectorwithBalancing•3-6Cells•All-in-OneDesign•6usecSARADC•2TempMonitors•1AuxVoltage•1BrickVoltage•IntegratedOV/UV&OTComparators•HardwareFAULTsignaling•BleedBalancing•Fast1Mb/sSPI•64TQFP)8CONFIDENTIALBQ77PL157AStackableOvervoltageProtector•3-,4-,5-or6-Cellovervoltageprotection•Stackableto18ormoreseriesLi-IonCells•FixedOver-VoltageThresholdsAvailablefrom3.75Vto4.35Vin25mVsteps•Highlyaccurate:±20mVMAX,TA=0to50°C•ProgrammableDelayTimerofDetection•Factoryprogrammedovervoltagethreshold•PermanentorRecoverableOutputActivationOptions•LowPower2uA•InternalNoiseFilterNosinglepinopenoradjacentpinshortcanpreventfail-safeoperation!NC=NoConnectVC6isMostNegativeCellOUT=OutputDriveLVIN=InputfromNextStackedPartUpPCKP=MostPositivePackConnection=SameasVDDpotentialPACK(+)PACK(-)10CellApplication9CONFIDENTIALBQ77910BQ77910Stand-AloneProtection&Balancing•4S-10S(anychemistry)•AutomaticInternalCellBalancing(50mA)•OpenCellDetection(brokenwire)•Low-sideNMOSProtectionFETS•ProgrammableProtectionFunctions•Short-Circuit(SC-D)•OverCurrent(OC-C/D)•OverTemperature(OT)•OverVoltage(OV)•UnderVoltage(UV)•SettableDelayTimes•Internal50-mAAutomaticCellBalancing•OpenandShortedThermistorDetection•ConfigurationstoredinEEPROM•SeparateorCommonCHG/DSG•AllowsFETssizedtocurrent•50uAOperatingCurrent,3uAShutdowncurrentbq77910Stand-AloneOperationNoMCURequired10CONFIDENTIALTemperatureSensing–TSpinreadsthevoltageonanexternalthermistortodeterminethepacktemperature–VTSBpinallowstheICtogenerateitsownbiasvoltagetodrivethethermistor–Tosavepower,theVTSBbiassupplyispulsedONonlywhenthetemperaturereadingsarebeingtaken–TheVTSBpinispoweredbytheLDOoutput(REG)•maximumoutputimpedanceis100•AccuracyofthetemperaturemeasurementdependsontheaccuracyoftheVTSBbiassupply;externalloadsontheVREGpinmayaffectthetemperaturemeasurement11CONFIDENTIALAutomaticBalancingInternalAutomaticCellBalancingProgrammableStartVoltages:2.4V/cellto3.9V/cellNormalConfiguration:BalancingwithinternalFETs(50mAmax)CellwithhighestvoltageisbledofffortimeTBalancingactioninhibiteddurin