01
Abstract
Raws li lub ntiaj teb tshiab lub zog tsheb kev lag luam tau dhau los ua qhov kev hloov pauv loj heev- hloov nws qhov tseem ceeb los ntawm "kev ntxhov siab ntau" mus rau ob qhov tseem ceeb ntawm "kev nyab xeeb thiab kev them nyiaj ceev"- lub zog roj teeb thev naus laus zis tab tom muaj kev hloov pauv hloov pauv, hloov zuj zus los ntawm cov kua tshuaj ib txwm muaj -electrolyte lithium mus rau{3} cov roj teeb loj {{3} 4680 cylindrical hlwb thiab, thaum kawg, tag nrho -khoom- lub xeev roj teeb (ASSBs). Ua raws li "photonic suture" uas txuas nrog cov khoom siv hluav taws xob sab hauv ntawm lub roj teeb nrog nws cov qauv sab nraud, laser vuam tshuab tsis yog ib qho kev pabcuam ua haujlwm ntxiv lawm; es, nws tau tshwm sim los ua cov txheej txheem tsim khoom tseem ceeb uas tswj cov roj teeb tawm los, siab tshaj plaws lub zog ceev, thiab kev nyab xeeb kev ua haujlwm. Kos raws li kev txiav ntau heev-cov ntaub ntawv tshawb fawb thiab kev lag luam tsim tawm hauv xyoo 2025-raws li nthuav tawm los ntawm tus nom WeChat tus account *High-Lub Zog Beam Processing Technology thiab Daim Ntawv Thov*- kab lus no muaj nyob rau hauv - qhov tob ntawm kev tsom xam ntawm lub tshuab hluav taws xob hloov hluav taws xob no. Qhov kev tshuaj ntsuam spans lub spectrum los ntawm cov txheej txheem bottlenecks nyob rau hauv infrared fiber ntau lasers mus rau lub breakthroughs ua tiav nrog xiav / infrared hybrid tshav kub qhov chaw, thiab los ntawm kev siv ib tug singular Gaussian beam mus rau lub zog teb reconstruction enabled los ntawm Multi-Plane Light Conversion (MPLC) thiab Adjustable Ring. Lub hom phiaj yog los nthuav qhia kev lag luam nrog kev nthuav dav dav ntawm qhov kev siv thev naus laus zis no, thaum tib lub sijhawm saib ua ntej mus rau yav tom ntej cov xwm txheej hauv cov khoom siv hluav taws xob- lub xeev cov roj teeb tsim, qhov twg laser thev naus laus zis- dhau los ntawm kev tswj hwm ntawm micro- thiab nanoscale-yuav daws cov teeb meem kev sib raug zoo ntawm cov khoom siv hluav taws xob xws li cov khoom siv hluav taws xob hnyav xws li cov khoom siv hluav taws xob zoo li pos. txheej.
02
Lub ntsiab lus
Nyob rau hauv cov chaw tsim khoom ntawm lub zog tshiab lub tsheb fais fab roj teeb, laser vuam tshuab tau ntev permeated txhua theem tseem ceeb -los ntawm tawg- pov thawj valve sealing thiab electrode tab welding mus saj zawg zog connector koom, busbar welding, thiab roj teeb module PACK los ua ke- ua hauj lwm raws li lub cev pob zeb uas ua kom cov roj teeb ruaj khov. Tam sim no, cov roj teeb loj cylindrical-ua piv txwv los ntawm Tesla tus qauv 4680- tau txo qis sab hauv thiab txhawb nqa cov nqi ntau heev- tso tawm lub zog los ntawm "tabless" qauv tsim. Txawm li cas los xij, qhov kev tsim kho tshiab no tau ua rau muaj kev nthuav dav ntxiv ntawm cov kauj ruam vuam thiab ua haujlwm zoo hauv qhov nyuaj ntawm txoj kev vuam nws tus kheej. Hauv kev tsim cov roj teeb prismatic lossis cylindrical, nyob ze -infrared (IR) fiber ntau lasers tau ntev tuav txoj haujlwm tseem ceeb, ua tsaug rau lawv lub zog siab ceev thiab muaj pov thawj muaj kev ruaj ntseg. Txawm li cas los xij, raws li qhov kev faib ua feem ntawm cov ntaub ntawv muaj kev cuam tshuam zoo heev- xws li tooj liab thiab txhuas - nyob rau hauv cov qauv roj teeb tau nce (tshwj xeeb tshaj yog nyob rau hauv cov vuam ntawm lub rooj zaum tam sim no cov khoom siv hluav taws xob pom hauv 4680 roj teeb), ib txwm siv tib yam - hom Gaussian beams tau ntsib cov kev txwv lub cev hnyav. Nyob rau hauv chav tsev kub, qhov nqus ntawm tooj liab rau infrared lasers nyob rau hauv 1064 nm wavelength ntau yog tsawg dua 5%. Yog li ntawd, cov khoom siv hluav taws xob loj heev yuav tsum tau pib lub pas dej ua ke; Txawm li cas los xij, thaum cov khoom pib yaj, nws qhov nqus tau nce sai sai. Lub zog ntau dhau no feem ntau ua rau muaj kev kub ntxhov nyob rau hauv lub pas dej molten, ua rau muaj kev cuam tshuam loj thiab porosity. Rau cov roj teeb hluav taws xob- uas xav tau kev nyab xeeb tshaj plaws- cov khoom siv hlau uas tsim los ntawm cov khoom tawg uas pom lawv txoj hauv kev mus rau sab hauv ntawm lub roj teeb ntawm tes ua lub peev xwm "ticking time bomb" rau luv luv circuits. Raws li tau sau tseg hauv cov ntaub ntawv tshawb fawb- xws li tsab xov xwm * Daim Ntawv Thov Laser Vuam Tshuab hauv Kev Tsim Hluav Taws Xob Hluav Taws Xob *- cov roj teeb hluav taws xob feem ntau ua haujlwm hauv qhov chaw hnyav uas muaj kev vibration thiab kub siab; yog li, qhov kev ntseeg siab ntawm ntau pua lossis ntau txhiab qhov sib koom ua ke hauv qhov system ncaj qha txiav txim siab tag nrho kev nyab xeeb ntawm lub tsheb. Yog li ntawd, lub hom phiaj ntawm kev lag luam tau hloov pauv los ntawm lub hom phiaj ntawm "ua tiav daim ntawv cog lus ruaj ntseg" mus rau kev ua raws li cov txheej txheem vuam precision uas yog "zero spatter, low heat input, and high-efficiency." Nyob rau theem no, txawm hais tias infrared lasers -los ntawm cov txheej txheem optimization cov txheej txheem xws li wobble vuam- tau txo cov teeb meem tsis xws luag rau qee qhov, cov kev txwv ntawm ib qho hluav taws xob tau dhau los ua qhov pom tseeb ntxiv thaum ntsib nrog qhov ntom ntom ntom ntom ntom ntawm cov npoo ntawm 4680 roj teeb tam sim no cov khoom sib cais, thiab cov khoom siv hluav taws xob thermal muab cov khoom sib cais. Yog li ntawd, qhov no tau yuam kom cov zej zog engineering nrhiav cov tiam tshiab ntawm lub teeb thiab kab teeb -shaping technologies muaj peev xwm los hloov pauv cov txheej txheem ntawm lub teeb- cov khoom siv sib cuam tshuam.
Kev nce qib hauv roj teeb thev naus laus zis-tshwj xeeb tshaj yog kev hloov pauv los ntawm cov kua mus rau ib nrab- khoom thiab tag nrho -khoom- xeev electrolytes, nrog rau cov qauv hloov ntawm lub qhov txhab mus rau stacked thiab loj cylindrical designs - tau ua nruj me ntsis xav tau ntawm welding, precooler, thiab ntau dua. Raws li kev tsim khoom loj ntawm 4680 roj teeb nce siab, kev sib txuas ntawm cov phaj ntim tam sim no thiab qhov zoo thiab tsis zoo electrode foils nthuav tawm qhov kev sib tw loj heev: koom nrog cov ntaub ntawv sib txawv ntawm cov thicknesses loj heev -tshwj xeeb, ultra- cov ntawv nyias nyias (ntawm micron nplai) nrog cov khoom hnyav dua tam sim no (ntawm millimeter scale). Tsis tas li ntawd, lub "tabless" (tag nrho{10}}tab) electrode qauv yuav tsum tau lub laser beam scan thiab weld ib tug loj tus naj npawb ntawm cov ntsiab lus nyob rau hauv ib tug luv luv lub sij hawm, tso unprecedented xav tau ntawm lub laser system lub dynamic teb muaj peev xwm thiab lub zog faib tswj. Txawm ntau radical yog qhov kev hloov mus rau cov khoom siv hluav taws xob{12}} lub xeev cov roj teeb, uas qhia cov sulfide, oxide, los yog polymer-raws li cov khoom electrolytes, nrog rau cov hlau lithium anodes uas muaj zog heev. Cov ntaub ntawv tshiab no nthuav tawm ntau dua rhiab heev rau thermal input dua li cov khoom sib cais; Yog li ntawd, qhov siab -kub plasma thiab tsausmuag lub pas dej ua ke hloov pauv hauv cov tsoos sib sib zog nqus-kev nkag mus vuam (Keyhole Vuam) tuaj yeem yooj yim cuam tshuam qhov ncaj ncees ntawm cov khoom electrolyte txheej, ua rau lub roj teeb tsis ua haujlwm. Yog li ntawd, cov txheej txheem vuam yuav tsum ua tiav qhov kev hloov pauv ntawm "kev sib sib zog nqus- hom kev nkag mus" mus rau "kev ua kom sov ruaj khov" lossis "tswj sib sib zog nqus- hom nkag." Tawm tsam qhov keeb kwm yav dhau los no, beam shaping thev naus laus zis tau tshwm sim los ua ib qho tseem ceeb ntawm kev tsim kho tshiab, ua tus choj txuas rau lub caij nyoog ntawm ib txwm muaj thiab tom ntej - tiam roj teeb technologies. Cov ntawv tshaj tawm uas muaj nyob rau ntawm tus account nom no-xws li *Puas yog Beam Shaping lub neej yav tom ntej ntawm Laser Vuam?* thiab *Fabkis Cailabs Tau Txais Siab-Speed Laser Vuam ntawm tooj liab Siv MPLC Beam Shaping Technology*- muab cov ncauj lus kom ntxaws txog kev hloov pauv no. Daim ntawv thov ntawm Multi-Plane Light Conversion (MPLC) thev naus laus zis thiab Diffractive Optical Elements (DOEs) tau tso lub laser qhov chaw los ntawm cov kev txwv ntawm ib ncig Gaussian tis, ua kom nws hloov mus rau ntau yam duab-xws li rings, squares, los yog txawm tias cov asymmetrical profiles. Qhov no spatial redistribution ntawm lub zog fundamentally suppresses lub nruj ejection ntawm hlau vapor nyob rau hauv lub keyhole, yog li tswj lub keyhole lub qhib thiab ruaj khov lub xeev; Nyob rau hauv tas li ntawd, nws lub cev tshem tawm lub hauv paus ua rau spatter thiab porosity tsim. Piv txwv li, kev tshawb fawb los ntawm University of Warwick hais txog daim ntawv thov ntawm annular laser beams nyob rau hauv koom nrog dissimilar Al-Cu cov ntaub ntawv qhia tau hais tias los ntawm precisely tswj lub hwj chim piv ntawm lub hauv paus beam thiab lub annular beam (piv txwv li, 40% core / 60% nplhaib), tsim ntawm brittle intermetallic compounds. Qhov kev tshawb pom no muaj txiaj ntsig tseem ceeb rau kev koom ua ke ntawm cov khoom sib xyaw tshiab tam sim no- cov txheej txheem yuav koom nrog hauv kev tsim cov khoom siv hluav taws xob hauv xeev -.
Raws li peb tsom peb qhov kev mloog zoo rau cov khoom siv - lub xeev cov roj teeb - dav suav hais tias yog qhov kawg ntawm kev daws teeb meem - lub luag haujlwm ntawm laser vuam tau nce zuj zus thiab tseem ceeb. Kev tsim khoom ntawm cov khoom- lub xeev cov roj teeb kis tau tsuas yog cov qauv hlau encapsulation; nws nce ntxiv nrog rau micro- thiab nano- nplai kho thiab interfacial bonding ntawm cov ntaub ntawv electrode. Nyob rau hauv no juncture, kev taw qhia ntawm laser qhov chaw nrog txawv wavelengths tshwm sim raws li tus yuam sij rau kev kov yeej kev bottlenecks. Kev nce sai ntawm cov lasers xiav (wavelengths ntawm kwv yees li 450 nm) yog ib qho tseem ceeb tshaj plaws kev nce qib hauv xyoo tas los. Raws li cov kev tshawb fawb xws li * Cov nyhuv ntawm Plume Suppression ntawm Ntshiab Copper Vuam Efficiency Siv 15 kW Blue Diode Laser * (Osaka University, Nyiv) thiab * 3 kW Blue Laser Conduction Vuam ntawm Copper Hairpins * (Politecnico di Milano, Ltalis), tooj liab nthuav tawm ntau dua li qhov pom ntawm xiav {1000000000000000000000000000000000000000000000000000000; nws tus nqi nqus rau infrared teeb. Qhov no txhais tau hais tias xiav lasers tuaj yeem ua tiav qhov ruaj khov ntawm cov khoom siv tooj liab ntawm qhov tsis tshua muaj hluav taws xob tsawg, ua haujlwm feem ntau hauv cov hluav taws xob hluav taws xob vuam hom uas zoo li tshem tawm spatter. Lub peev xwm no yog tsim kom haum rau kev sib txuas cov anode tabs ntawm cov khoom- lub xeev cov roj teeb, uas yog rhiab heev rau thermal shock. Txawm li cas los xij, cov lasers xiav feem ntau muaj cov kab teeb pom kev tsis zoo, ua rau nws nyuaj rau kev ua tiav welds nrog qhov tob tob{19}} rau - qhov dav qhov sib piv. Yog li ntawd, "Blue + Infrared" hybrid beam technology (Hybrid Laser Vuam) tau tshwm sim raws li kev lag luam - kev pom zoo daws teeb meem. Los ntawm kev siv lub laser xiav rau preheating los txhim kho cov khoom nqus, thiab tom qab ntawd siv lub siab -beam- zoo infrared laser kom tau txais kev sib sib zog nqus tob, qhov kev sib koom ua ke no ua kom muaj qhov sib nqus qhov tob thaum tswj kev ruaj ntseg tshwj xeeb hauv lub pas dej molten. Kev tshawb fawb ntxiv ua los ntawm University of Erlangen-Nuremberg tau lees paub tias kev sib xyaw ua ke ntawm cov wavelengths sib txawv tau tswj hwm cov dej ntws ntawm cov pas dej ua ke zoo sib xws-ib qho tseem ceeb ntawm qhov tseem ceeb rau kev vuam ntawm lithium hlau los yog coated tam sim no cov khoom, uas yuav muaj nyob rau hauv lub neej yav tom ntej solid- xeev roj teeb tsim Tsis tas li ntawd, lub luag haujlwm ntawm ultrashort-pulse lasers (picosecond/femtosecond) hauv cov khoom siv- lub xeev roj teeb raug teeb tsa kom nthuav dav. Tsis muaj kev txwv ib leeg rau kev txiav daim ntawv thov, cov lasers no feem ntau yuav raug siv rau micro-texturing ntawm cov khoom ntawm cov khoom electrolytes-yog li txhim kho kev sib cuag ntawm lub ntsej muag- nrog rau qhov tsis yog -kev puas tsuaj koom nrog ultra-thin, lethium txheej txheem kev puas tsuaj rau cov hlau.
Saib tom ntej, kev hloov pauv ntawm laser vuam nyob rau hauv cov ntsiab lus ntawm cov khoom ruaj khov- lub xeev cov roj teeb thiab kev hloov pauv dav dua nyob rau tom ntej - tiam roj teeb thev naus laus zis yuav yog tus cwj pwm los ntawm kev sib piv: "kev txawj ntse" thiab "kev ua kom zoo tshaj plaws." Ntawm ib sab, raws li cov qauv roj teeb ua kom nyuaj, tso siab rau ntawm qhov qhib - lub voj voog txheej txheem kev teeb tsa tsis txaus los ua kom tau raws li qhov yuav tsum tau ua. Yog li ntawd, kaw- lub voj voog hloov kho vuam tshuab- sib koom ua ke siab - lub koob yees duab ceev, photodiodes, OCT (Optical Coherence Tomography), thiab AI algorithms- tau npaj los ua cov cuab yeej txheem. Raws li tau sau tseg hauv tsab xov xwm *AI-Raws li Laser Materials Processing*, los ntawm kev siv tshuab kev kawm algorithms los tshuaj xyuas cov duab hauv pas dej ua ke thiab acousto-optic signals nyob rau lub sijhawm, cov tshuab no tuaj yeem kwv yees tej yam tsis xws luag hauv milliseconds thiab dynamically kho laser fais fab lossis scanning paths -ib qho kev muaj peev xwm thiab kev ua haujlwm zoo tshaj {3} roj teeb cov kab ntau lawm, qhov twg cov nqi khoom siv tshwj xeeb yog siab heev. Ntawm qhov tod tes, laser zog tswj hom tau teeb tsa los ntawm kev ua haujlwm yooj yim Nruam Nruam (CW) mus rau ntau qhov kev sib tw spatio- lub sijhawm hloov pauv. Adjustable Ring Mode (ARM) beam profiles yuav dhau mus ntxiv kom ua tiav nanosecond-theem temporal synchronization ntawm cov kab nruab nrab thiab nruab nrab; Thaum ua ke nrog galvanometer-tsav "wobble" vuam cov txheej txheem, qhov no yuav tsim kom muaj ntau- qhov ntev tswj lub moj khaum encompassing beam duab, lub cev nqaij daim tawv, thiab spatial oscillation. Piv txwv li, thaum welding lub ultra{21}}thin tam sim no collectors pom nyob rau hauv cov khoom- lub xeev roj teeb, lub laser beam yuav tsum tau txais ib tug "horseshoe" los yog "ob npaug-C" siv zog faib-coupled nrog ultra{{25} siab-frequency os{26}}frequation hauv qab cov khoom electrolyte txheej. Tsis tas li ntawd, nyob rau hauv cov ntsiab lus ntawm lithium hlau anodes, lasers tej zaum yuav ua hauj lwm rau * nyob rau hauv -situ * tu los yog deg modification, los yog txawm siv rau qhov tseeb kho cov khoom electrolytes ntawm Laser-Induced Forward Transfer (LIFT) technology.
Hauv cov ntsiab lus, cov kev hloov pauv hloov zuj zus los ntawm loj- hom 4680 cylindrical hlwb mus rau cov khoom siv- lub xeev cov roj teeb tsom iav qhov kev hloov pauv ntawm laser vuam tshuab nws tus kheej- hloov los ntawm ib qho piv txwv ntawm "broad-stroke, siab - zog "precision", ib qho kev txiav txim siab. Infrared fiber ntau lasers tau tso lub hauv paus rau scaled manufacturing; annular beam profiles thiab Multi-Pulse Laser Control (MPLC) thev naus laus zis tau daws cov txheej txheem kev mob tseem ceeb uas cuam tshuam nrog cov ntaub ntawv muaj kev cuam tshuam zoo heev thiab kev tswj cov khoom tawg; lub caij no, kev taw qhia ntawm xiav, ntsuab, thiab hybrid teeb qhov chaw tau qhib lub qhov rais tshiab rau kev koom nrog cov ntaub ntawv huab. Nyob rau hauv lub neej yav tom ntej, los ntawm kev sib sib zog nqus kev txawj ntse txawj ntse thiab multi{10}}dimensional light field modulation technologies, laser welding yuav tsis tsuas yog ib tug txheej txheem ib kauj ruam ntawm ib tug roj teeb tsim kab; es, nws yuav hloov zuj zus mus rau hauv ib qho tseem ceeb enabling technology uas txhais cov qib ntawm kev ywj pheej nyob rau hauv lub roj teeb qauv tsim thiab thawb lub ciam teb ntawm lub zog ceev txwv. Peb muaj txhua qhov laj thawj los ntseeg tias, nyob rau hauv qhov kev sib tham tob ntawm "lub teeb" thiab "hluav taws xob," laser thev naus laus zis yuav txuas ntxiv nthuav dav thaj tsam ntawm lub ntiaj teb lub zog hloov pauv mus rau kev nyab xeeb thiab muaj txiaj ntsig yav tom ntej.
