电子与信息工程学院本科毕业论文(设计)外文文献翻译译文题目：DesignofaLead-AcidBatteryChargingandProtectingICinPhotovoltaicSystem学生姓名：专业：电气工程及其自动化指导教师：2012年12月湖北科技学院本科毕业论文（设计）：外文翻译湖北科技学院本科毕业论文（设计）：外文翻译PAGE\*MERGEFORMAT18PAGE\*MERGEFORMAT17DesignofaLead-AcidBatteryChargingandProtectingICinPhotovoltaicSystem1.IntroductionSolarenergyasaninexhaustible,inexhaustiblesourceofenergymoreandmoreattention.Solarpowerhasbecomepopularinmanycountriesandregions,solarlightinghasalsobeenputintouseinmanycitiesinChina.Asakeypartofthesolarlighting,batterychargingandprotectionisparticularlyimportant.Sealedmaintenance-freelead-acidbatteryhasasealed,leak-free,pollution-free,maintenance-free,low-cost,reliablepowersupplyduringtheentirelifeofthebatteryvoltageisstableandnomaintenance,theneedforuninterruptedforthevarioustypesofhaswideapplicationinpowerelectronicequipment,andportableinstrumentation.Appropriatefloatvoltage,innormaluse(topreventover-discharge,overcharge,over-current),maintenance-freelead-acidbatteryfloatlifeofupto12~16yearsfloatvoltagedeviationof5%shortenthelifeof1/2.Thus,thechargehasamajorimpactonthistypeofbatterylife.Photovoltaic,batterydoesnotneedregularmaintenance,thecorrectchargeandreasonableprotection,caneffectivelyextendbatterylife.ChargingandprotectionICistheseparationoftheoccupiedareaandtheperipheralcircuitcomplexity.Currently,themarkethasnotyetreal,chargedwiththeprotectionfunctionisintegratedonasinglechip.Forthisproblem,designasetofbatterychargingandprotectionfunctionsinoneICisverynecessary.2.SystemdesignandconsiderationsThesystemmainlyincludestwoparts:thebatterychargermoduleandtheprotectionmodule.Ofgreatsignificanceforthebatteryasstandbypoweruseoftheoccasion,Itcanensurethattheexternalpowersupplytothebattery-powered,butalsointhebatteryovercharge,over-currentandanexternalpowersupplyisdisconnectedthebatteryistoputthestatetoprovideprotection,thechargeandprotectionrolledintoonetomakethecircuittosimplifyandreducevaluableproductwasteofresources.Figure1isaspecificappl