Laser qhov chaw xaiv rau roj teeb PACK Vuam: Fiber, Blue Diode los yog Solid-State?

Xaiv qhov chaw laser yog ib qho kev txiav txim siab tshaj plaws hauv lub roj teeb PACK vuam kab. Tib kilowatts coj txawv txawv ntawm txhuas, tooj liab thiab npib tsib xee - thiab qhov kev xaiv tsis ncaj ncees tshwm sim tom qab raws li kev cuam tshuam-lub teeb puas, cov pob qij txha tawg lossis lub sij hawm tsis tuaj yeem. Cov lus qhia no taug kev los ntawm physics, peb tsev neeg laser, txheej txheem kev xaiv plaub-kauj ruam, thiab cov pitfalls uas tsuas yog qhia lawv tus kheej rau hauv pem teb ntau lawm.

Rau kev pom dav dav ntawm cov txheej txheem toj roob hauv pes, pib nrog peblaser vuam hub, tom qab ntawd rov qab los ntawm no rau PACK-kev xaiv cov lus qhia tshwj xeeb.

Seb lub laser tuaj yeem welding hlau yog txiav txim siab tsis yog los ntawm lub zog, tab sis los ntawm ntau npaum li cas ntawm qhov wavelength cov hlau tiag absorbs. Lub zog zoo tib yam laser xa mus rau cov hlau sib txawv tuaj yeem txhais ua cov khoom siv hluav taws xob zoo uas txawv ntawm ntau yam - mus txog qhov kev txiav txim ntawm qhov loj.

Peb tsev neeg laser siv tau hauv PACK vuam npog cov wavelengths:

Nco tseg:Absorptivity nce nrawm nrog qhov kub thiab txias - nws tuaj yeem ua ob lossis ntau dua thaum cov hlau mus txog nws qhov melting point. Lub rooj thiaj li teev cov chav tsev-kub approximations nkaus xwb. Qhov tseeb weld coupling nyob ntawm qhov kev sib tshuam, qhov kub thiab txias-pool loj. Siv lub rooj raukev tshuaj ntsuam thawj zaug xwb; yeej tsis txhais nws ncaj qha mus rau hauv lub hwj chim pob nyiaj siv.

PACK kab xav tau laser vuam ntawm tsib txoj haujlwm tseem ceeb:

1. Cell tabs- cov ntawv hlau ntawm lub ntsej muag ntawm tes, feem ntau nickel-plated, npib tsib xee-tooj ​​liab clad, lossis txhuas clad;
2. Module- thiab PACK-theem busbars- cov kab hluav taws xob txuas nrog cov hlwb hauv series, hauv txhuas lossis tooj liab;
3. Structure seals (sealing plugs / cover phaj)- feem ntau yog txhuas;
4. Sampling thiab teeb liab kab (nickel strips)- nyias cov ntawv nyiaj npib tsib xee, txoj haujlwm ib txwm hloov pauv los ntawm kev sib xyaw tab + BMS tsim;
5. Dissimilar pob qij txha- tooj liab-rau-aluminium thiab tooj liab-rau-nickel, feem ntau ntawm busbars thiab tabs.

Daim ntawv qhia tawm tsam peb tsev neeg laser, lub ntsiab kev sib ntaus sib tua zoo li no:

Fiber lasers (1064 nm, CW / QCW): lub workhorse rau txhuas PACKs.Ib tug multi-kilowatt fiber ntau laser pub plaub qhov chaw npog feem ntau ntawm cov module. Hauv QCW hom (pulse durations ntawm ob peb puas microseconds), nws tuav lub zog nruab nrab siab thaum tseem tuav txoj haujlwm uas xav tau kev tswj cov cua sov - npib tsib xee-plated tabs, piv txwv li. Yog tias koj hnyav hom, peb tus neeg piav qhia ntawmQCW fiber ntau laser vuamnpog cov kev lag luam tawm hauv kev nthuav dav.

Semiconductor / xiav diode lasers: thawj qhov kev xaiv rau tooj liab thiab tooj liab-aluminium pob qij txha.Lub teeb xiav ntawm 450 nm yog absorbed zoo los ntawm tooj liab, uas so lub qub tsis ua hauj lwm hom ntawm reflected lub teeb rov qab mus rau hauv thiab rhuav tshem lub laser unit. Kev lag luam tawm: ib leeg-emitter hwj chim tseem yog lub hauv paus caj dab, yog li xiav tshuab ob peb lub diodes los yog siv scanning galvo taub hau los txhim kho qhov chaw fais fab. Rau kev kho tag nrho ntawm daim ntawv thov qhov rai, saibfais fab roj teeb laser vuam daim ntaub ntawv.

Solid-state lasers (Nd:YAG / Nd:YVO₄, Q-hloov ns pulses): precision qhov chaw vuam ntawm nyias qhov chaw.Hauv qab roughly 0.5 mm thickness thiab nyob rau hauv ~ 100 μm nkag mus - npib tsib xee strips thiab sampling-kab pob qij txha - ns pulses muab siab ncov hwj chim nrog tsawg tshav kub kis, ua kom lub tshav kub-cuam tshuam cheeb tsam nruj. Tus nqi yog me me phab ntsa-plug efficiency (5% -10%) thiab lub teeb-tswj tu, thiab nruab nrab lub zog yuav tsis scale.

Ib kab lus xaus:aluminium → fiber ntau; tooj liab → xiav; nyias precision qhov chaw → solid-state mem tes.

Busbar txoj haujlwm tsim nyog lawv tus kheej mloog

Aluminium busbars weld zoo nkauj nrog fiber ntau CW, tab sis cov tooj liab thiab tooj liab-aluminium variants yog qhov txheej txheem qhov rais nqaim:

• Ntshiab tooj liab busbars: xiav LD ua ntej; fiber ntau QCW nrog anti-reflection cais raws li lub fallback.
• Copper-aluminium busbars: xiav LD, los yog faib cov sib koom ua ke hla ob qhov chaw nres tsheb.
• Rau cov lus parameter thiab cov kev ntsuas tsis raug, saib pebbusbar laser vuam tsisqhia; rau CCS kev koom ua ke saib, saibCCS busbar laser vuam.

Sealing & nyias-nickel txoj haujlwm

Sealing plugs thiab npog daim hlau yog txhuas - fiber ntau CW thaj chaw. Cov ntaub ntawv teb los ntawm cov kab ntau lawm qhia tau hais tias qhov kev qhuab ntuas tsis ua tiav: ib qho ntaub ntawv tau mus txogroj teeb sab saum toj npog laser sealingyield ntawm 99.86%, thiab tawg-pov thawj valve welds ua raws tib lub logic - saibroj teeb tawg-pov thawj valve vuam. Rau nyias cov nickel-strip txoj hauj lwm uas solid-state ns pulses muaj,roj teeb lug weldingnpog cylindrical thiab hnab cell variants.

Kev poob rau hauv kev xaiv feem ntau txhais tau tias pib nrog cov nplooj ntawv spec thiab cov khoom sib piv. Qhov kev txiav txim siab ntseeg tau yog:kho cov kev txwv ua ntej, tom qab ntawd saib cov khoom.

STEP 01 - Cov khoom siv hauv paus.Aluminium-dominant → fiber ntau laser. Copper-dominant lossis tooj liab-aluminium dissimilar → xiav LD ua ntej; Yog tias nws lub zog qab nthab thaiv qhov sib koom ua ke, fiber ntau QCW nrog kev txhawb nqa tshwj xeeb yog qhov poob. Nickel los yog npib tsib xee-plated → fiber ntau CW los yog solid-state mem tes, txiav txim siab los ntawm thickness.

STEP 02 - Thickness thiab nkag mus.Tag nrho thickness Tsawg dua los yog sib npaug rau 1 hli, nkag mus tsawg dua los yog sib npaug 0.3 hli → solid-state pulse los yog low-power LD. 1–3 mm tag nrho, 0.5–1.5 mm nkag → fiber ntau CW los yog QCW. Ntau dua lossis sib npaug 3 hli tag nrho, Ntau dua lossis sib npaug ntawm 1.5 hli nkag mus → siab zog fiber ntau, qhov chaw loj dua, ruaj khov takt.

STEP 03 - Kab takt.Ib leeg sib koom < 2 s (high-speed scan welding) → xiav LD + galvo, los yog fiber ntau QCW + galvo. 3–10 s rau ib qho kev sib koom ua ke (cov chaw nres tsheb ib txwm PACK) → fiber ntau CW ib qho chaw lossis QCW. > 30 s (hnyav seem) → high-power fiber nrog ntev-pulse QCW.

KAUJ RUAM 04 - Kev tswj kom sov thiab kho.Cov chaw nyob ib sab ntawm lub ntsej muag ntawm tes → tswj cov cua sov, nyiam QCW lossis hom mem tes, tsis txhob nyob ntev ntev. Tsis zoo shielding-gas nkag → xaiv cov txheej txheem oxidation-tolerant los yog rework lub fixture. Kev tsis zoo hauv av / thaiv cov khoom siv → nyiam fiber ntau lossis semiconductor systems rau lawv tus cwj pwm EMI zoo dua.

1. Copper lub siab reflectivity hlawv laser qhov chaw.Ntawm 1064 nm ntawm ci tooj liab, kev cuam tshuam tuaj yeem tshaj 95%. Feem ntau thaum ntxov fiber-laser diode ua tsis tiav ntawm PACK kab taug qab rov qab mus rau qhov xwm txheej no. Cov lus teb zoo sib xws yog xiav LD - lossis ntxiv ib qho kev cuam tshuam rau lub tsheb ciav hlau fiber ntau, ntawm tus nqi ntawm lub zog.

2. Cov theem nkig hauv cov pob qij txha sib txawv.Copper-aluminium welds tsim intermetallic xws li CuAl₂; Tshaj li ob peb microns lawv dhau los ua nyuaj, nkig theem uas tawg ua ntej hauv kev vibration. Cov kev ntsuas tiv thaiv yog kev nkag mus thiab kev tswj xyuas qhov kub thiab txias - los yog cais cov khub ntawm lub cev nrog ib txoj hlua tooj liab-txheej txhuas. Sib sib zog nqus parameter-theem kev taw qhia yog nyob rau hauv pebaluminium alloy welding defect tswjtsab xov xwm.

3. Cov pob qij txha txias thiab lawv cov kev tshawb nrhiav hauv online.Kev soj ntsuam fais fab + inline AOI + sampling kev ntsuas kev puas tsuaj ua rau lub hauv paus. Kev saib xyuas hluav taws xob tau lees paub "lub mem tes raug rho tawm haujlwm kom raug," AOI nyeem cov hlaws geometry thiab xim ntawm lub ntsej muag, thiab cov qauv metallographic / tensile tseem tshwm sim txhua qhov kev hloov. Lub zeem muag lub cev thiab inline clamp-force sensing yog qhov tsis ntev los no ntxiv - tsis muaj leej twg ntawm lawv tseem hloov pauv cov qauv. Ib qho tseem ceeb tshaj plaws nyob ntsiag to ua rau cov neeg mob khaub thuas sib koom ua ke ntau dua li ib qho kev ntsuas laser: kev sib kis ntawm qhov chaw. Yog vim li caspre-weld davhlau ya nyob twg tutau dhau los ua qauv kev coj ua ntawm cov kab niaj hnub no.

4. Tiv thaiv roj.99.99% argon yog qhov kev xaiv tseem ceeb rau PACK vuam. Tsawg tus nqi ntws txhais tau tias oxidation, blackening thiab pom spatter. Cov pa system belongs rau fixturing thiab kav dej, tsis yog lub laser - tab sis nws cov nyhuv av ncaj qha rau ntawm lub vuam.

5. Cov chaw txias txias tsis zoo.Yog tias hom txuas ntxiv nyob ntawm ib qho chaw rau ntau tshaj li ob peb vib nas this, lub ntsej muag ntawm tes overheats thiab cov khoom siv tuaj yeem raug kev txom nyem thaum tsim tom qab. Hauv-PACK ntsuas kub ntsuas ntxiv rau QCW hom yog cov qauv sib xyaw.

Ib qho kev lag luam hais mus: "yog tias lub laser kim txaus, ib qhov fiber ntau npog tag nrho PACK." Hauv qee qhov xwm txheej uas muaj tseeb - LFP (lithium hlau phosphate) modules, txhuas-tsim qauv tsim, zam lub sijhawm takt. Tab sis cov xwm txheej no rhuav tshem cov qauv ib leeg-fiber:

• High-nickel NCM pob khoom- tooj liab tabs muaj ntau, kev cuam tshuam kev cuam tshuam yog siab, thiab fiber ntau ncaj qha rau qhov ci tooj liab txaus ntshai qhov kev puas tsuaj.
• Copper-aluminium dissimilar busbars- ntau pob qij txha, nqaim qhov rais; kev teeb tsa fiber ntau tsuas yog tawm tsam kom cov theem nkig tswj tau.
• Loj cia (ESS) modules- Cov ntu tuab tuab heev tuaj yeem tshaj li ib chav tsev fiber ntau lub zog, thawb koj mus rau ntau lub chaw nres tsheb sib koom.

Blue LD nqi thiab lub hwj chim qab nthab tseem tab tom txhim kho sai -hnub no tus txheej txheem ciam teb tsis yog peb lub xyoos ' ciam teb. Lub pragmatic xaiv stance: fiber ntau raws li tus txha caj qaum, xiav LD npog tooj liab thiab dissimilar txoj hauj lwm, thiab ntau qhov chaw yooj tau tseg thaum lub sij hawm validation qhov rais.

Nco tseg:Daim ntawv qhia no yog qhov zoo, engineering-kev txiav txim daim ntawv qhia. Kev teeb tsa zaum kawg yog txiav txim siab ua ke nrog lub zog ntau, takt lub sijhawm thiab kev tswj xyuas thermal - cov qauv tshwj xeeb tseem xav tau cov txheej txheem validation ntawm cov qauv tiag. Cov duab yog qhov qhia txog kev lag luam-qhov ntau yam, tsis tau lees paub qhov tseem ceeb.

Tsis muaj universal laser qhov chaw rau PACK vuam. Cov khoom, qauv, takt lub sij hawm thiab cov txheej txheem qhov rais txiav txim siab qhov kev daws teeb meem - thiab cov kab uas muaj zog tshaj ua ke ib lub pob txha fiber ntau nrog xiav-diode thiab pulsed kev txhawb nqa qhov twg physics xav tau nws.

Yog tias koj tab tom qhia txog PACK kab tshiab lossis rov ua haujlwm ntawm qhov chaw nres tsheb uas twb muaj lawm, peb cov engineers tuaj yeem tshuaj xyuas koj cov duab kos thiab pom zoo rau qhov chaw teeb tsa. Xauj peb ntau yam ntawmlaser vuam tshuab- handheld, tsis siv neeg thiab galvo systems - los yog xa peb koj workpiece cov ntsiab lus rau ib tug txheej txheem kev soj ntsuam thiab hais lus nyob rau hauv 24 teev.