光伏发电蓄电池设计.pdf

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内蒙古工业大学毕业论文外文翻译

DesignofaLead-AcidBatteryChargingand

ProtectingICinPhotovoltaicSystem

1.Introduction

Solarenergyasaninexhaustible,inexhaustiblesourceofenergymoreandmore

attention.Solarpowerhasbecomepopularinmanycountriesandregions,solar

lightinghasalsobeenputintouseinmanycitiesinChina.Asakeypartofthesolar

lighting,batterychargingandprotectionisparticularlyimportant.Sealed

maintenance-freelead-acidbatteryhasasealed,leak-free,pollution-free,

maintenance-free,low-cost,reliablepowersupplyduringtheentirelifeofthebattery

voltageisstableandnomaintenance,theneedforuninterruptedforthevarioustypes

ofhaswideapplicationinpowerelectronicequipment,andportableinstrumentation.

Appropriatefloatvoltage,innormaluse(topreventover-discharge,overcharge,

over-current),maintenance-freelead-acidbatteryfloatlifeofupto12~16yearsfloat

voltagedeviationof5%shortenthelifeof1/2.Thus,thechargehasamajorimpact

onthistypeofbatterylife.Photovoltaic,batterydoesnotneedregularmaintenance,

thecorrectchargeandreasonableprotection,caneffectivelyextendbatterylife.

ChargingandprotectionICistheseparationoftheoccupiedareaandtheperipheral

circuitcomplexity.Currently,themarkethasnotyetreal,chargedwiththeprotection

functionisintegratedonasinglechip.Forthisproblem,designasetofbattery

chargingandprotectionfunctionsinoneICisverynecessary.

2.Systemdesignandconsiderations

Thesystemmainlyincludestwoparts:thebatterychargermoduleandthe

protectionmodule.Ofgreatsignificanceforthebatteryasstandbypoweruseofthe

occasion,Itcanensurethattheexternalpowersupplytothebatt

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