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1、湖北科技学院本科毕业论文（设计）：外文翻译DesignofaLead-AcidBatteryChargingandProtectingICinPhotovoltaicSystemZENGDe-you,LINGChao-dong,LIGuo-gang(YuanshunICDesignR&DCenter,HuaqiaoUniversity,Quanzhou362021,China)Source:MicroelectronicDevice&Technology,June20071.IntroductionSolarenergyasani
2、nexhaustible,inexhaustiblesourceofenergymoreandmoreattention.Solarpowerhasbecomepopularinmanycountriesandregions,solarlightinghasalsobeenputintouseinmanycitiesinChina.Asakeypartofthesolarlighting,batterychargingandprotectionisparticularlyimportant.Sealedmaintenance-fr
3、eelead-acidbatteryhasasealed,leak-free,pollution-free,maintenance-free,low-cost,reliablepowersupplyduringtheentirelifeofthebatteryvoltageisstableandnomaintenance,theneedforuninterruptedforthevarioustypesofhaswideapplicationinpowerelectronicequipment,andportableinstrum
4、entation.Appropriatefloatvoltage,innormaluse(topreventover-discharge,overcharge,over-current),maintenance-freelead-acidbatteryfloatlifeofupto12~16yearsfloatvoltagedeviationof5%shortenthelifeof1/2.Thus,thechargehasamajorimpactonthistypeofbatterylife.Photovoltaic,batter
5、ydoesnotneedregularmaintenance,thecorrectchargeandreasonableprotection,caneffectivelyextendbatterylife.ChargingandprotectionICistheseparationoftheoccupiedareaandtheperipheralcircuitcomplexity.Currently,themarkethasnotyetreal,chargedwiththeprotectionfunctionisintegrate
6、donasinglechip.Forthisproblem,designasetofbatterychargingandprotectionfunctionsinoneICisverynecessary.2.SystemdesignandconsiderationsThesystemmainlyincludestwoparts:thebatterychargermoduleandtheprotectionmodule.Ofgreatsignificanceforthebatteryasstandbypoweruseoftheocc
7、asion,Itcanensurethattheexternalpowersupplytothebattery-powered,butalsointhebatteryovercharge,over-currentandanexternalpowersupplyisdisconnectedthebatteryistoputthestatetoprovideprotection,thechargeandprotectionrolledintoonetomakethecircuittosimplifyandreducevaluablep
8、roductwasteofresources.Figure1isaspecificapplicationofthisIcinthephotovoltaicpowergenerationsystem,butalsothesourceofthisdes
