Thermal tswj ntawm lub zog tshiab lub tsheb fais fab roj teeb
Lub hwj chim roj teeb thermal tswj yog ib qho ntawm cov thev naus laus zis tseem ceeb hauv cov roj teeb lithium-ion. Nws lub hom phiaj los xyuas kom meej qhov kub thiab txias ntawm lub roj teeb thaum siv thiab them nyiaj, thiab txhawm rau txhim kho lub zog ceev thiab kev pab lub neej ntawm lub roj teeb. Cov ntaub ntawv tswj cov cua kub yog qhov tsim nyog kev txhawb nqa kom ua tiav lub hom phiaj no. Hauv qab no, peb yuav qhia koj txog daim ntawv thov thiab kev tsom xam ntawm lub zog roj teeb thermal tswj cov ntaub ntawv.
Cov khoom siv thermal conductive
Thermal conductive cov ntaub ntawv ua lub luag haujlwm tseem ceeb hauv lub hwj chim roj teeb thermal tswj. Tam sim no, feem ntau siv cov khoom siv thermal conductive xws li thermal conductive paste thiab thermal conductive sheets.
Thermal conductive paste yog siv dav rau ntawm qhov chaw sib chwv ntawm cov roj teeb thiab cov radiators, thiab nws cov thermal conductivity feem ntau yog nyob nruab nrab ntawm 1-8 W/mK. Raws li cov khoom siv thermally conductive, nws tuaj yeem hloov cov cua sov los ntawm qhov kub thiab txias mus rau qhov kub thiab txias. Txoj kev npaj ntawm thermally conductive paste suav nrog kev siv cov thermally conductive hais xws li pob zeb diamond hais thiab silicon nitride ua cov cab kuj los sau cov khoob me me thiab cov kab nrib pleb. Qhov kom zoo dua no ua rau thermal conductive muab tshuaj txhuam siv dav hauv lub hwj chim roj teeb thermal tswj.
Cov ntawv thermal conductive feem ntau yog ua los ntawm tooj liab lossis txhuas thiab muaj cov thermal conductivity ntawm kwv yees li 200 W / mK. Daim ntawv no tuaj yeem hloov cov cua sov ntawm lub roj teeb mus rau lub radiator nyob ze sib npaug, yog li ua tiav cov cua txias ntawm cov cua sov ntawm lub tshuab hluav taws xob thiab roj teeb. Nyob rau tib lub sijhawm, cov yeeb yaj kiab kuj tuaj yeem txhim kho lub peev xwm adsorption ntawm lub tshuab hluav taws xob rau lub roj teeb thiab tiv thaiv lub tshuab hluav taws xob kom tsis txhob poob rau hauv kev co.
Thermal barrier khoom
Cov khoom siv thermal barrier yog cov khoom uas ua rau cov cua sov qeeb, nrog rau cov thermal conductivity feem ntau nyob rau hauv qhov ntau ntawm 0.2-0.35 W/mK. Tsis tas li ntawd, cov khoom siv tau yooj yim rau kev ua thiab cov duab. Cov ntaub ntawv thermal barrier feem ntau yog siv nyob rau hauv cov roj teeb modules thiab ntsia nruab nrab ntawm cov roj teeb cell thiab radiators kom txo tau qhov kub thiab txias gradients, yog li txo cov roj teeb saum npoo kub thiab ua kom muaj kev ruaj ntseg ntawm roj teeb.
Muaj ob pawg tseem ceeb ntawm cov ntaub ntawv thermal barrier: cov ntaub ntawv insulating thiab cov ntaub ntawv rwb thaiv tsev sib xyaw. Cov ntaub ntawv rwb thaiv tsev feem ntau yog siv los txo cov roj teeb saum npoo kub thiab feem ntau yog nruab nrab ntawm cov roj teeb thiab cov hluav taws xob. Nws cov ntaub ntawv raw feem ntau suav nrog iav fiber ntau thiab ceramics. Cov ntaub ntawv rwb thaiv tsev sib xyaw ua ke ua ke ntau yam khoom siv, xws li nanosilica thiab polymers, los tiv thaiv kev ua haujlwm ntawm cov cua sov thiab tam sim no. Tsis tas li ntawd, cov khoom siv rwb thaiv tsev sib xyaw muaj lub zog siab thiab ua haujlwm ntev, yog li lawv tau siv dav.
Theem hloov cov ntaub ntawv
Cov ntaub ntawv hloov pauv yog cov khoom uas tuaj yeem nqus tau thiab tso tawm ntau lub zog thermal zoo, thiab lawv cov ntsiab lus melting feem ntau yog qhov ruaj khov. Thaum lub sij hawm them nyiaj, thaum lub sij hawm hloov cov khoom mus txog qhov kub thiab txias, nws tuaj yeem nqus tau cov cua kub ntau, yog li txo qhov kub ntawm lub roj teeb thaum lub sij hawm them thiab tawm, tuav lub roj teeb ruaj khov ntawm qhov kub thiab txias, thiab yog li txuas lub roj teeb lub neej. Yog li ntawd, cov ntaub ntawv hloov pauv tau siv dav hauv kev tswj hwm hluav taws xob hluav taws xob thermal. Cov ntaub ntawv hloov pauv feem ntau yog muab faib ua ob hom: cov ntaub ntawv hloov pauv hloov pauv hauv cov txheej txheem thiab cov ntaub ntawv hloov pauv inorganic. Organic theem hloov cov ntaub ntawv feem ntau yog siv nyob rau hauv qis kub ntau yam thiab muaj siab purity, tab sis lawv nqus thiab tso cua sov kuj maj mam. Inorganic theem hloov cov ntaub ntawv nqus thiab tso tawm cua sov sai dua, tab sis cov teeb meem xws li yooj yim melting ntawm kub kub thiab toxicity kuj txwv lawv daim ntawv thov.
Nyob rau hauv luv luv, optimizing lub thermal tswj ntawm lub hwj chim roj teeb yog tus yuam sij rau kev txhim kho lawv kev nyab xeeb, lub zog ceev thiab kev pab lub neej. Kev siv cov ntaub ntawv xws li cov khoom siv thermally conductive, thermal barrier cov ntaub ntawv, thiab cov ntaub ntawv hloov theem yog ib txoj hauv kev zoo. Tau kawg, kev xaiv cov khoom siv yuav tsum xav txog yam xws li tus nqi thiab kev ruaj khov kom ua tiav qhov zoo tshaj plaws rau cov nyiaj. Kev siv cov kev ntsuas no tuaj yeem txhim kho kev ua tau zoo ntawm cov roj teeb fais fab.
