锂电池英文生产过程.pdf

锂电池英文生产过程.pdf

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Mixing（配料）Mixsolventandboundseparatelywithpositiveandnegativeactivematerials.Makeintopositiveandnegativepastymaterialsafterstirringathighspeedtilluniformity.Coating（涂布）Now,weareincoatingline.Weusebackreversecoating.Thisistheslurry-mixingtank.Theanode（Cathode）slurryisintroducedtothecoatingheaderbypneumaticityfromthemixingtank.Theslurryiscoateduniformlyonthecopperfoil,thenthesolventisevaporatedinthisoven.Therearefourtemperaturezones,theyareindependentlycontrolled.Zoneonesetsat55degreeC,zonetwosetsat65degreeC,zonethreesetsat80degreeC,zonefoursetsat60degreeC.Thespeedofcoatingis4metersperminute.Youseetheslurryisdried.Theelectrodeiswoundtobeabigrollandputintotheoven.Thetimeismorethan2hoursandtemperatureissetat60degreeC.Throughoutthecoating,weusemicrometertomeasuretheelectrodethicknessperabout15minutes.Wedothisinordertokeepthebestconsistencyoftheelectrode.Vocabulary:

coatingline涂布车间backreversecoating辊涂coatingheader涂布机头Al/copperfoil铝/铜箔degreeC摄氏度temperaturezones温区windtobea（big）roll收卷evenly/uniformly均匀oven烘箱evaporate蒸发electrode极片CuttingCutarollofpositiveandnegativesheetintosmallersheetsaccordingtobatteryspecificationandpunchingrequest.PressingPresstheabovepositiveandnegativesheetstilltheybecomeflat.PunchingPunchingsheetsintoelectrodesaccordingtobatteryspecification,ElectrodeAftercoatingwecompresstheelectrodewiththiscylinderingmachineatabout7metersperminute.Beforecompresswecleantheelectrodewithvacuumandbrushtoeliminateanyparticles.Thenthecompressedelectrodeiswoundtoabigroll.Weusemicrometertomeasurethecompressedelectrodethicknessevery10minutes.Aftercompressingwecutthewebintolargepieces.Wetapethecathodeedgetopreventanypossibleinternalshort.Thelargeelectrodewithedgetapedisslitintosmallerpieces.Thisisultrasonicprocessthataluminumtabsareweldedontocathodesusingultrasonicweldmachine.Wetapetheweldsectiontopreventanypossibleinternalshort.Andfinally,wecleanthefinishedelectrodeswithvacuumandbrush.Vocabulary:

cylindering柱形辊压vacuum真空particle颗粒wound旋紧卷绕micrometer千分尺internalshort内部短路slit分切ultrasonic超声波weld焊接AnodemakingInanodemakingprocess,wecutthematerialintocertainlengthstrips.Atthemeantime,weputasmallpieceofinsulationtapetothetabinordertopreventanypossibleinternalshort.Thenthepreparednickeltabisrivetedonanodeandpatplain.Wealsotapetherivetsectiontopreventanypossibleinternalshort.Andfinally,wecleanthefinishedelectrodeswithvacuumandbrush.JellyrollThisisJellyroll,amanualwindingprocess.InthecourseofJellyroll,firstly,weplacetheseparatorinbetweencentralpins,pressthefootswitchtoturncentralpinsabout120degrees.Secondly,placetheanodetotheedgeofcentralpins,andturncentralpinsabout180degrees.Lastly,placethecathodetotheedgeofcentralpins.Duringthewindingprocess,weapplytensionbypressingtheelectrodesandtheseparator.Weputtheterminationtapeattheend.AfterJellyroll,wechecktheshortcircuit,thenformtheJellyrollbypressing,sothatitiseasiertoinserttheJellyrollintothecan.Controlpoints:

1.Whenwindingtotheendoftheanode,coveringtheanodecompletelybytheseparator.2.Inthewholeprocess,itisthemostimportantpointstoensurethebestalignmentamongthecathode,theanodeandtheseparatorfortheJellyroll.Theseparatorhastocovertheanodeandthecathode,andtheanodehastocoverthecathodecompletely.Thesepointsaremainlycheckedbeforeshortchecking.Vocabulary:

Jellyroll卷绕Manual手工的Separator隔膜纸centralpin卷针footswitch脚踏开关anode负极片cathode正极片terminationtape尾端胶纸shortcircuit短路alignment整齐Taping&insertingPutthetapeonthetwosideofJ/R,TopreventJ/Rbeinghurtintheinsertionprocess.PutapieceoftapebetweencathodetabandJ/R.Becauseanodeelectrodeiswiderthancathodeelectrode.Putthebottomtape.InsertthefinishedJ/Rintothecanmanuallyandthenshortcircuitcheckbymulti-meter.SpotweldingNitabtocap.UltrasonicweldingtheAltabtocapusingultrasonicweld.Wehavethesecondspotweldingtoensurethebestcontactbetweenthetabandcap.Applytopinsulator,topreventNitabcontactingwithcan.FinalJ/Rinsertionbythecentrifuge.Cappositioningbyhand.Thencheckthecapinthesuitableposition,orthedefectsisputintoredbin,Finally,shortcircuitcheckagaintoensurethattherebenointernalshortJ/Rflowingtonextline.Vocabulary:

J/R极芯tape胶纸electrode极片multi-meter万用表Spotwelding点焊Nitab极耳Ultrasonicweld超焊Insulator隔圈centrifugemachine甩壳机defect次品redbin红盒LaserweldingThisistheLaserweldingroom!

Thefirstprocessisweldingforthealuminumcap,specia