超级电容替代备份电源中的电池

Supercapacitors(orultracapacitors)arefindingtheirwayintoanincreasingnumberofapplicationsforshort-termenergystorageandapplicationsthatrequireintermittenthighenergypulses.Onesuchapplicationisapowerridethroughcircuit,inwhichabackupenergysourcecutsinandpowerstheloadifthemainpowersupplyfailsforashorttime.Thistypeofapplicationhastypicallybeendominatedbybatteries,butelectricdoublelayercapacitors(EDLCs)arefastmakinginroadsastheirprice-per-farad,sizeandeffectiveseriesresistancepercapacitance(ESR/C)continuetodecrease.SupercapacitorsCanReplaceaBackupBatteryforPowerRide-ThroughApplicationsDesignNote450JimDrewIntroductionSupercapacitorCharacteristicsSupercapacitors(orultracapacitors)arendingtheirwayA10F,2.7Vsupercapacitorisavailableina10mm×intoanincreasingnumberofapplicationsforshort-term30mm2-terminalradialcanwithanESRof25mΩ.Oneenergystorageandapplicationsthatrequireintermittentadvantagesupercapacitorsofferoverbatteriesistheirhighenergypulses.Onesuchapplicationisapowerride-longlifetime.Acapacitor’scyclelifeisquotedasgreaterthroughcircuit,inwhichabackupenergysourcec