Electricvehiclesareaverycommonmeansoftransportation.Amongthevariousperformancesofelectricvehicles,thecruisingrangeisparticularlyimportant,andthecruisingrangeofelectricvehiclesismainlydeterminedbythebattery,includingthetype,model,andcapacityofthebattery.Therearemainlytwotypesofbatteries,lead-acidbatteriesandlithiumbatteries.Whenwechoosebatteries,shouldwechooselead-acidbatteriesorlithiumbatteries?Whichismorepractical?Whichismorecost-effective?TodayIwillmakeitcleartoyouonce.Batteriesarethesourceofenergyreservesforelectricvehicles.Althoughtherearemanytypesofbatteriesintheelectricvehiclemarket,suchasgraphenebatteries,blackgoldbatteries,lithiumironphosphatebatteries,etc.,therearemainlytwotypesoflead-acidbatteriesandlithiumbatteries.TodaywepassThedifferentadvantagesanddisadvantagesofthetwobatteriestoanalyzetheirpracticalvalue.Analysisof3categoriesoflead-acidbatteriesLead-acidbatteriesarethemostcommonlyusedbatteriesinthecurrentmarket,accountingforabout75%ofthecurrentmarket.Becauseoftheireconomicalbenefits,convenientreplacementandhighsafety,theyaredeeplylovedbythemajorityofelectricvehicleusers.Lead-acidbatteriesaredividedinto3subcategories:includingordinarylead-acidbatteries,blackgoldbatteriesandgraphenebatteries,whichhavedifferentcruisingrangesanddifferentpricesunderthesamemodel.Generallyspeaking,thepriceofgraphenebatteriesishigher,andthepriceofordinarylead-acidbatteriesislower.Buttheactualusageshareistheopposite.Forexample,althoughgraphenebatterieshavealongerrangethanordinarylead-acidbatteriesunderthesamemodel,thepriceisalsomuchhigher,somostuserschooseordinarylead-acidbatteriesalittlemore.

Withthebirthoflithiumbattery,itsservicelifehasalwaysbeenamystery.Manyfriendsdonotknowhowlongtheservicelifeoflithiumbatteryis.Thisarticletakesthelithiumbatteryofmobilephoneasanexampletotalkaboutit.Whatisthelifespanofalithiumbattery?Whenitcomestotheservicelifeoflithiumbatteries,wehavetomentionthematerial,structureandapplicationtechnologyoflithiumbatteries,becausedifferentmaterials,differentstructures,anddifferentapplicationtechnologieswillaffectthelifeoflithiumbatteries.AccordingtorelevanttestsThedataprovesthatthetheoreticalservicelifeoflithiumbatteriesisabout300to500times.Manyfriendsmaysay,howcantheservicelifeofthisbatterybecalculatedby"times"?Takingamobilephoneasanexample,the"chargetimes"mentionedheredoesnotrefertothenumberoftimesthemobilephoneischarged,butreferstothe"completechargeanddischargetimes".Themobilephoneischargedfrombelow5%to100%.Dischargefrom100%to5%again,andcountthenumberofcompletedischargesonce.ThereisadifferencebetweenthenumberoftestsandtheactualnumberofchargingAnyproductneedstoundergorigoroustesting,andtheservicelifeoflithiumbatteriesisalsothefocusofthetest.Manymanufacturersneedalongtestprocesswhenlaunchinganewlithiumbattery.Takethetestdataasanexample,assumingthebatterytestedbythemanufacturerTheservicelifeisbetween300and500times.Ifitisaccurateto400times,theactualbatteryservicelifemustbelessthan400times(completelychargedanddischarged).Manufacturerscandecidethematerials,designstructuresandapplicationtechnologiesusedinthemanufactureofbatteries.However,itisimpossibletodeterminetheuseenvironmentofthebattery,theconstantchangesoftheexternalenvironmentandthefrequencyoftheuser'suseofthe(mobilephone)device,etc.,willaffecttheservicelifeofthebattery.Thenumberofbatterylifeisgraduallyreduced,ratherthandirectlyscrappedStilltakingthelithiumbatteryofthemobilephoneasanexample,asmentionedinthepreviousarticle,thetheoreticalchargingtimesofthelithiumbatteryisabout300~500times.Assumingthattheuserchargesonceeverytwodays,itwillbechargedabout180timesayear,butmostmobilephonesarecharged.Thebatterylifeismorethanthreeyears,whythebatteryhasnotbeenscrapped?Itshouldbeknownthatalthoughtheservicelifeofthebatteryislimited,itsservicelifeisgraduallyreduced,notdirectlyscrapped.Usersreportthatafteramobilephonehasbeenusedforaperiodoftime,thebatterypowerisnotdurable.Thisisthereason,butinmostcases,thebatterystoragecapacityofmanymobilephoneswilldecrease,butevenafterthetheoreticalservicelifeisreached,itcanstillbeusedinpractice.However,theperformancereductionratiowillexceed20%andabove.Conclusion:Theservicelifeoflithiumbatterieshasalwaysbeenamystery.Althoughmanymanufacturershavetestedthem,therearedifferencesbetweentheoreticallifeandactualapplicationlife,andtherearemanykindsoflithiumbatteries,suchaslithiummanganesebatteries,lithiumironbatteries,andlithiumcopperbatteries.Andsoon,plusthelithiumbatteryalsohasrequirementsontheworkingtemperature,thetemperatureistoohighortoolow,etc.,willaffectthebatterylife.Note:Althoughthelithiumbatteryismentionedinthetext,itdoesnotinvolvethehardwaremodel,systemversion,andsoftwareversionofanyproduct.

1Connectthepowersupplyandleaveitforadayorso(youcanturnitonornot)toseeifitcanactivateitself.2Takeoutthebattery,thereisabuttonandseveralLEDlightsonthebackofthebattery,pressthebuttononceorlongforthreesecondstoseeifitcanbeactivated.3Generally,itisthelow-voltageprotectionoftheprotectionboard,anditisactivated.Otherwise,thepositiveandnegativepolesofthebatterycanbeactivatedbytappingthepositiveandnegativepolesofthemobilepowersupplyforafewtimes.Afteractivation,thereisavoltageanditcanbechargednormally.4Ifyouunderstandthecircuit,youcanfindanexternalpowersupplywithavoltagebetween11Vand12.6Vtocharge,andthecurrentcanbebelow1000mA.

Thenormalchargingofelectricvehicles,basically6~8hourscannotexceed12hours,otherwiseitwillhaveagreatimpactonthelifeofthebattery.Andintheprocessofusinganelectricvehicle,itisnotrecommendedtouseuptheelectricityintheelectricvehicleeverytime.Generally,whentheremainingpowerisabout40%or35%,theelectricvehiclecanbecharged.InthiscaseGenerally,itcanbefullychargedfrom6to8hours.Accordingtotheabovesituation,theindicatorlightofthechargerwillturnfromredtogreen.Atthistime,althoughthechargerindicatesthatitisfullycharged,iftimepermits,itwillbefloatedforabout30to60minutes.However,thecontinuouschargingtimemustnotexceed12hours,otherwisethebatterywillbedamagedduetoovercharging.Andaftercharging,besuretounplugtheACpowersupplyfirst,andthenunplugtheconnectedplugonthebattery.Ifitisnotcharging,donotconnectthechargertotheACpowersupply.Forbatteries,maintenanceisdoneonceeveryonetotwoweekstoachievethepurposeofextendingbatterylife.Thechargingtimeofanelectricvehicleconsistsofthefollowingsituations.Onesituationisthatifyouoftenrideanelectricvehicletoclimbahilltocarrypeople,youcanperformachargingwhenthecruisingrangereaches50%.Thisisagoodchargingtime.Thesecondsituationisthatthenumberoftimesheusuallyridesabicycleisverysmall,andhecan'trideanelectricbicycleseveraltimesaweek,sowhenhisdrivingmileagereachesabout70%or65%,hecanchargeitonce,whichisalsobetter.time.Thethirdsituationisthatyoudonotgooutforalongtime.Inthiscase,itisrecommendedtochargethebatteryoncewithinamonth,andfullydischargethebatteryduringthisperiod,andthenrechargeit.

Thetaboooflead-acidbatteriesistochargethemwhentheyarecompletelydischarged.Inthiscase,thebatterylifewillbegreatlyreduced.Donotperformdeepdischargeformanytimes.Theso-calleddeepdischargereferstothepowerfailureofelectricvehicles.,Aftertheunder-voltageandpower-off,itisabsolutelyimpossibletocontinuetopoweronanddrive,andtheintermittentdischargeofthebatteryoftheelectricvehiclewilldamagethebattery.Iftheelectricvehicleisundervoltageandpoweroffwhiledriving,turnofftheelectricdoorlockandpushthevehicletodrive.Hopetohelpyou!1.Chargewhenthebatteryindicatorshowsonethirdoftheremainingbattery.2.Thechargingenvironmentshouldbekeptdryandtidy,andthechargershouldnotbewrappedinplasticbagsorplasticbottles,becauseitisveryeasytoburnwhenthechargercannotbreathe.3.Trynottousefastcharging,ifnotnecessary,donotuseitmorethantwicewithinamonth.4.Thechargerisplacedinafixedplace,donotbumpit,evenifitiscarried,itmustfullyconsiderthebumpsthatcausefailures.5.Usethestandardchargertocharge.