Txawm hais tias prismatic hlwb los yog cylindrical hlwb, vuam yog ib qho ntawm cov txheej txheem tseem ceeb hauv kev tsim roj teeb. Nyob rau hauv cov lithium roj teeb ntau lawm kab, cov khoom seem ntawm cov txheej txheem vuam yog feem ntau yog concentrated nyob rau hauv lub hlwb los ua ke thiab PACK kab seem, saib daim duab hauv qab no:
Cov lus piav qhia luv luv ntawm cov txheej txheem vuam cov ntsiab lus
1. Kev nyab xeeb qhov cua vuam
Qhov chaw nyab xeeb, tseem hu ua lub siab nyem valve, yog lub cev nyias-walled valve lub cev nyob rau sab saum toj ntawm lub roj teeb. Thaum lub siab sab hauv ntawm lub roj teeb ntau tshaj li qhov tau teev tseg, qhov kev nyab xeeb ventures ruptures thiab tso tawm lub siab los tiv thaiv lub roj teeb ntawm bursting. Qhov kev nyab xeeb qhov cua muaj ib qho qauv tsim. Nws feem ntau siv laser vuam los txhim kho ob daim ntawv txhuas hlau ntawm ib qho duab. Thaum lub siab sab hauv ntawm lub roj teeb nce mus rau ib qho nqi, cov ntawv txhuas tawg los ntawm qhov tsim qhov zawj los tiv thaiv lub roj teeb los ntawm kev nthuav dav ntxiv thiab tawg. Yog li ntawd, cov txheej txheem no muaj cov kev cai nruj heev ntawm laser vuam tshuab. Lub weld seam yuav tsum tau muab kaw thiab lub tshav kub input yog nruj me ntsis tswj los xyuas kom meej tias qhov kev puas tsuaj siab tus nqi ntawm lub weld seam yog ruaj khov nyob rau hauv ib tug tej yam ntau yam (feem ntau 0.4 ~ 0.7MPa) . Loj dhau los yog me me dhau lawm yuav muaj kev cuam tshuam zoo rau kev nyab xeeb ntawm lub roj teeb.
2. Terminal vuam
Cov terminals ntawm lub roj teeb npog phaj muab faib ua qhov zoo thiab qhov tsis zoo. Kev ua haujlwm ntawm cov terminals kuj tau muab faib ua kev sib txuas sab hauv thiab sab nraud. Internal kev twb kev txuas yog welding ntawm lub roj teeb tabs mus rau lub terminals. Kev sib txuas sab nraud yog kev sib txuas ntawm cov roj teeb terminals los ntawm kev sib txuas cov strips los ua cov kab sib txuas thiab cov kab sib txuas ua ke los tsim cov roj teeb pob.
Lub roj teeb terminals feem ntau siv txhuas rau qhov zoo electrode thiab tooj liab rau qhov tsis zoo electrode, thiab feem ntau yog siv cov qauv riveted. Tom qab riveting tiav, vuam yog ua, feem ntau yog ib lub voj voog nrog ib txoj kab uas hla ntawm 8 hli. Thaum vuam, ntev npaum li lub zog tensile thiab cov khoom siv hluav taws xob ntawm cov qauv tsim tau ua tiav, fiber ntau lasers lossis hybrid vuam lasers nrog cov nqaj zoo zoo thiab cov khoom siv hluav taws xob zoo dua. Siv fiber ntau laser lossis hybrid vuam laser rau vuam. Nws tuaj yeem paub qhov ruaj khov ntawm aluminium-aluminium qauv vuam thiab tooj liab-tooj liab qauv vuam ntawm cov hluav taws xob terminals, txo spatter, thiab yog li txhim kho qhov vuam tawm los.
3. Tab extension welding
Daim ntawv txuas ntxiv tab yog ib qho tseem ceeb uas txuas lub roj teeb npog thiab lub roj teeb jelly yob. Nws tseem yuav tsum coj mus rau hauv tus account lub overcurrent, lub zog thiab tsis tshua muaj spatter xav tau ntawm lub roj teeb. Yog li ntawd, thaum lub sij hawm welding txheej txheem nrog lub hau, yuav tsum muaj txaus weld dav, thiab nws yog ib qhov tsim nyog los xyuas kom meej tias tsis muaj cov khoom poob rau ntawm lub roj teeb jelly yob kom tsis txhob muaj roj teeb luv luv. Tooj liab, raws li cov khoom siv tsis zoo electrode, yog cov khoom siv hluav taws xob zoo uas muaj qhov nqus tsawg thiab yuav tsum muaj zog ntau dua thaum vuam.
4. Cov kaus poom sealing vuam
Cov ntaub ntawv casing ntawm cov roj teeb muaj xws li aluminium alloy thiab stainless hlau. Ntawm lawv, aluminium alloy yog siv feem ntau, thiab ob peb siv ntshiab txhuas. Stainless hlau yog cov khoom siv nrog qhov zoo tshaj plaws laser weldability, tshwj xeeb tshaj yog 304 stainless hlau. Txawm hais tias siv mem tes los yog laser txuas ntxiv, welds nrog cov tsos zoo thiab kev ua tau zoo tuaj yeem tau txais. Siv cov laser txuas txuas mus rau vuam nyias-plhaub lithium roj teeb tuaj yeem ua rau kom muaj txiaj ntsig los ntawm 5 mus rau 10 zaug, thiab cov tsos thiab cov khoom sib khi zoo dua. Tam sim no, txhawm rau txhawm rau ua kom nrawm dua vuam ceev thiab zoo li qub, feem ntau cov tuam txhab tau pib siv cov vuam vuam sib txuas thiab lub teeb pom kev zoo los hloov qhov qis-ceev ib leeg fiber ntau vuam dhau los. Tam sim no, qhov vuam ceev ntawm cov tuam txhab feem ntau cov kab ntau lawm tau mus txog 200mm / s. Rau qhov qis-ceev fiber ntau optic vuam kab ntawm qee cov tuam txhab, txhawm rau txhawm rau txhawm rau txhim kho kev ruaj ntseg ntawm cov hlaws vuam, qhov dav dav dav dav yog 70mm / s.
5. Sealing ntsia hlau vuam
Sealing ntsia hlau (sau lub hau caps) kuj tuaj nyob rau hauv ntau hom, thiab lawv cov duab feem ntau yog ib puag ncig cap nrog ib txoj kab uas hla ntawm 8mm thiab ib tug tuab ntawm txog 0.9mm. Lub hauv paus yuav tsum tau rau vuam yog tias tus nqi siab tiv taus mus txog 1.1MPa, thiab yuav tsum tsis muaj pinholes, tawg los yog tawg ntsiab lus. Raws li cov txheej txheem kawg ntawm cov roj teeb welding, cov txiaj ntsig ntawm sealing ntsia hlau vuam yog qhov tseem ceeb tshwj xeeb. Vim muaj cov khoom seem ntawm cov electrolyte thaum lub sij hawm vuam ntawm cov ntsia hlau sealing, cov teeb meem xws li cov ntsiab lus tawg thiab pinholes yuav tshwm sim. Txoj hauv kev tseem ceeb los txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau tshem tawm cov teeb meem no, nws yog qhov yuav tsum tau ua kom txo qis cov cua sov nkag. Kev siv laser vuam tuaj yeem txhim kho kev ruaj ntseg thiab kev sib raug zoo, yog li txhim kho cov txiaj ntsig zoo.
6. PACK Busbar vuam
Lub roj teeb module tuaj yeem nkag siab tias yog kev sib xyaw ua ke ntawm lithium-ion hlwb txuas nrog hauv series thiab sib npaug, nrog ib lub roj teeb saib xyuas thiab tswj cov cuab yeej nruab. Cov qauv tsim ntawm lub roj teeb module feem ntau txiav txim siab qhov ua tau zoo thiab kev nyab xeeb ntawm lub roj teeb pob. Nws cov qauv yuav tsum txhawb nqa, kho thiab tiv thaiv cov roj teeb hlwb. Nyob rau tib lub sijhawm, yuav ua li cas kom tau raws li qhov yuav tsum tau muaj overcurrent, kev tsis sib xws tam sim no, yuav ua li cas tswj lub xov tooj ntawm tes kub, thiab seb lub zog puas tuaj yeem raug txiav tawm yog tias muaj qhov txawv txav loj heev kom tsis txhob muaj kev cuam tshuam cov saw hlau, thiab lwm yam, yuav yog txhua yam kev txiav txim siab. zoo ntawm roj teeb modules. Txij li thaum laser welding ntawm tooj liab thiab txhuas nyhav tsim cov khoom sib txuas uas tsis tuaj yeem ua tau raws li qhov xav tau, ultrasonic vuam feem ntau yog siv. Tsis tas li ntawd, tooj liab thiab tooj liab, txhuas thiab txhuas feem ntau yog laser welded. Nyob rau tib lub sij hawm, vim hais tias ob qho tib si tooj liab thiab txhuas ua cua sov sai heev thiab muaj siab heev laser reflectivity, thiab lub thickness ntawm lub tab extension daim ntawv yog kuj loj, yuav tsum tau ib tug ntau zog-lub zog laser mus cuag vuam.
