Raws li lub tsheb hluav taws xob (EV) kev lag luam nce mus rau qhov kwv yees 45% kev lag luam thoob ntiaj teb los ntawm 2030, ib qho kev sib tw tseem ceeb ntawm engineering tseem nyob: Thermal Runaway. Thaum lub roj teeb chemistry hloov zuj zus mus, kev lag luam tsom tau hloov mus rau "Passive Fire Protection" (PFP)- siv cov ntaub ntawv sib khi ua kom muaj kev puas tsuaj loj.
Cov Mechanics ntawm Thermal Runaway
Thermal runaway yog cov tshuaj tiv thaiv kab mob. Thaum ib leeg lithium-ion cell tsis ua haujlwm-vim lub cev muaj zog, kev tsim khoom tsis zoo, lossis overcharging- nws ua kom muaj cua sov siab (dhau 800 degree) thiab tso tawm cov roj hluav taws xob hluav taws xob.
Yog tias tsis muaj kev cuam tshuam thermal zoo, qhov cua sov tam sim no nthuav tawm mus rau cov hlwb uas nyob ib sab, tsim cov nyhuv domino uas siv tag nrho cov roj teeb pob hauv vib nas this. Lub hom phiaj ntawm niaj hnub gasket engineering tsis yog tsuas yog kaw, tab sis raucais thiab ncuaqhov kev nthuav tawm no, muab sijhawm rau cov neeg caij tsheb tseem ceeb kom khiav tawm.
Peb Kab Kev Tiv Thaiv: Cov Khoom Siv Zoo Tshaj Plaws
01Cell -rau-Cell Barriers: Mica & Airgel
Nruab nruab nrab ntawm cov roj teeb ib leeg, cov ntawv ultra- nyias nyias yuav tsum ua "ua pa" (ntawm tes nthuav dav thaum them nyiaj) thaum thaiv 1000℃tshav kub spikes.
- Mica Composite:Zoo heev dielectric zog thiab hluav taws kub mus txog 1000 degree.
- Silica Aerogel:Lub ntiaj teb lub teeb pom kev zoo tshaj plaws, muab cov thermal rwb thaiv tsev zoo tshaj plaws nrog cov tuab me me / hnyav nplua.
02Pack Sealing: Nplaim Retardant Silicone Ua Npuas Ncauj
Lub gasket sealing lub roj teeb lub hau yuav tsum tiv thaiv dej ingress (IP68 ntsuam xyuas) thaum muaj sia nyob qhov xwm txheej hluav taws.
- UL94 V-0 Kev ntsuas:Tus kheej -kev tua hluav taws ua npuas ncauj ua kom lub gasket ua kom tawg, tsis yog roj.
- Compression Teeb Resistance:Tswj kev ruaj ntseg ntawm lub tsheb 10-15 xyoos txawm tias muaj kev vibration tas li.
03 Siab sib npaug: ePTFE Venting Membranes
Cov roj teeb ua kom muaj roj. Lub thawv ntim hermetically yog lub foob pob. ePTFE membranes tso cai rau cov roj khiav tawm sai sai thaum lub caij ntuj sov thaum thaiv cov dej nkag.
Kev nyab xeeb yog qhov kawg Performance Metric
Hauv EV era, lub gasket tsis yog ib lub nplhaib roj hmab xwb - nws yog ib qho tseem ceeb ntawm kev nyab xeeb. OEM manufacturers tau hloov ntawm cov khoom siv roj hmab mus rau cov kev daws teeb meem zoo liCeramifying Silicone(uas hloov mus rau hauv cov ntaub thaiv npog tawv tawv thaum hlawv) kom ua tau raws li tus qauv kev nyab xeeb nruj dua UN GTR 20.
Kev nqis peev hauv qib siab -cov ntaub ntawv thermal interface thiab nplaim taws- cov ntsaws ruaj ruaj yog tus nqi ntau tshaj - kev pov hwm zoo tiv thaiv kev lav phib xaub.
Raws li EV roj teeb voltages nce mus rau 800V thiab lub zog ceev nce, cov npoo rau qhov yuam kev shrinks. Xaiv cov neeg koom tes sib khi uas nkag siab txog kev tswj hwm thermal, tsis yog qhov ntev ntev.
