Yuav ua li cas yog lub LED nti hlws ris kub generated?
Yog vim li cas vim li cas LED heats li yog vim hais tias cov hluav taws xob ntxiv tsis yog tag nrho cov hloov dua siab tshiab rau hauv lub teeb lub zog, tab sis ib feem ntawm nws yog hloov dua siab tshiab rau hauv tshav kub zog.Lub teeb pom kev zoo ntawm LED tam sim no tsuas yog 100lm / W, thiab nws qhov kev hloov pauv hluav taws xob hluav taws xob tsuas yog kwv yees li 20 ~ 30%.Qhov ntawd yog hais tias, kwv yees li 70% ntawm cov hluav taws xob hluav taws xob tau hloov mus ua lub zog hluav taws xob.
Tshwj xeeb, tiam ntawm LED hlws ris kub yog tshwm sim los ntawm ob yam.
1. Internal quantum efficiency tsis siab, uas yog, thaum electrons thiab qhov recombined, photons tsis tau generated 100%, uas yog feem ntau hu ua "tam sim no to", uas txo cov recombination tus nqi ntawm cov cab kuj nyob rau hauv lub PN cheeb tsam.Cov xau tam sim no sib npaug los ntawm qhov hluav taws xob yog lub zog ntawm qhov no, uas tau hloov mus rau hauv lub zog hluav taws xob, tab sis qhov no tsis suav nrog cov ntsiab lus tseem ceeb, vim tias qhov kev ua haujlwm sab hauv photon tam sim no ze rau 90%.
2.Cov photons generated sab hauv tsis tuaj yeem tso tawm rau sab nraud ntawm lub nti thiab thaum kawg hloov mus rau hauv tshav kub.Qhov no yog qhov tseem ceeb, vim hais tias tam sim no quantum efficiency hu ua sab nraud tsuas yog hais txog 30%, thiab feem ntau nws hloov mus rau hauv tshav kub.Txawm hais tias luminous efficiency ntawm lub teeb incandescent yog tsawg heev, tsuas yog hais txog 15lm / W, nws converts yuav luag tag nrho cov hluav taws xob lub zog rau hauv lub teeb lub zog thiab radiates nws.Vim tias feem ntau ntawm cov hluav taws xob hluav taws xob yog infrared, lub luminous efficiency tsawg heev, tab sis nws tshem tawm qhov teeb meem txias.Tam sim no ntau thiab ntau tus neeg mob siab rau lub tshav kub dissipation ntawm LED.Qhov no yog vim hais tias lub teeb lwj los yog lub neej ntawm LED yog ncaj qha ntsig txog nws qhov kub thiab txias.
High-power LED dawb lub teeb daim ntawv thov thiab LED nti kub dissipation daws teeb meem
Niaj hnub no, cov khoom siv teeb pom kev zoo LED tau maj mam muab tso rau hauv ntau qhov chaw.Cov neeg xav tias muaj kev txaus siab txaus siab coj los ntawm lub zog loj LED lub teeb dawb thiab tseem txhawj xeeb txog ntau yam teeb meem!Ua ntej ntawm tag nrho cov, los ntawm qhov xwm ntawm high-power LED dawb lub teeb nws tus kheej.High-power LED tseem raug kev txom nyem los ntawm cov tsis zoo ib yam ntawm lub teeb emissions, luv luv lifespan ntawm sealing cov ntaub ntawv, thiab tshwj xeeb tshaj yog cov teeb meem ntawm tshav kub dissipation ntawm LED chips, uas yog ib qho nyuaj rau kev daws, thiab tsis muaj peev xwm coj kom zoo dua ntawm cov kev cia siab daim ntawv thov zoo ntawm dawb LED.Thib ob, los ntawm kev ua lag luam tus nqi ntawm high-power LED dawb lub teeb.Niaj hnub no lub high-power LED tseem yog ib tug aristocratic dawb lub teeb khoom, vim hais tias tus nqi ntawm high-power khoom yog tseem siab dhau heev lawm, thiab cov technology tseem yuav tsum tau txhim kho, yog li ntawd high-power dawb LED khoom siv tsis tau los ntawm leej twg xav tau. siv lawv.Xws liflexible LED zaub.Cia peb rhuav tshem cov teeb meem cuam tshuam ntawm high-power LED tshav kub dissipation.
Nyob rau hauv xyoo tas los no, nrog rau kev siv zog ntawm cov kws tshaj lij kev lag luam, ntau txoj kev txhim kho tau raug npaj rau cov cua kub dissipation ntawm high-power LED chips:
Ⅰ.Ua kom lub teeb tso tawm los ntawm kev nce thaj tsam ntawm LED nti.
Ⅱ.Txais yuav pob ntawm ob peb cheeb tsam me me LED chips.
Ⅲ.Hloov cov khoom ntim LED thiab cov khoom siv fluorescent.
Yog li nws puas tuaj yeem txhim kho cov teeb meem kub ntxhov ntawm cov khoom siv hluav taws xob muaj zog LED dawb los ntawm peb txoj kev saum toj no?Qhov tseeb, nws tawm tsam!Ua ntej tshaj plaws, txawm hais tias peb nce thaj tsam ntawm LED nti, peb tuaj yeem tau txais ntau lub luminous flux (lub teeb dhau los ntawm ib chav tsev ntawm lub sijhawm) Tus naj npawb ntawm cov kab teeb ntawm ib cheeb tsam yog lub luminous flux, thiab chav tsev yog ml).Nws yog qhov zoo rauLED kev lag luam.Peb cia siab tias yuav ua tiav lub teeb pom kev zoo uas peb xav tau, tab sis vim tias thaj chaw tiag tiag loj dhau lawm, muaj qee qhov cuam tshuam tsis zoo hauv cov txheej txheem thov thiab cov qauv.
Yog li nws yog tiag tiag tsis yooj yim sua kom daws tau qhov teeb meem ntawm high-power LED dawb lub teeb kub dissipation?Tau kawg, nws tsis yooj yim sua kom daws tau.Raws li cov teeb meem tsis zoo tshwm sim los ntawm tsuas yog ua kom cov nti hauv cheeb tsam, LED teeb lub teeb pom kev zoo tau txhim kho qhov chaw ntawm lub zog loj LED nti los ntawm kev siv ntau qhov chaw me me LED chips raws li kev txhim kho cov qauv electrode thiab flip-chip. qauv kom ua tiav 60lm./W siab luminous flux thiab tsawg luminous efficiency nrog siab kub dissipation.
Qhov tseeb, muaj lwm txoj hauv kev uas tuaj yeem txhim kho cov teeb meem kub ntxhov ntawm lub zog siab LED chips.Qhov ntawd yog los hloov cov yas yav dhau los lossis plexiglass nrog silicone resin rau nws cov khoom ntim dawb.Hloov cov khoom ntim tuaj yeem tsis tsuas yog daws qhov teeb meem ntawm qhov kub thiab txias ntawm LED nti, tab sis kuj txhim kho lub neej ntawm cov LED dawb, uas yog tiag tiag tua ob tug noog nrog ib lub pob zeb.Qhov kuv xav hais yog tias yuav luag txhua lub zog siab dawb lub teeb LED cov khoom zoo li lub zog siab LED lub teeb dawb yuav tsum siv silicone ua cov khoom siv encapsulation.Vim li cas thiaj yuav tsum tau siv cov silica gel los ua cov khoom ntim rau hauv high-power LED tam sim no?Vim tias silica gel absorbs tsawg dua 1% ntawm lub teeb ntawm tib lub wavelength.Txawm li cas los xij, qhov nqus ntawm epoxy resin mus rau 400-459nm lub teeb yog siab li 45%, thiab nws yog ib qho yooj yim ua rau lub teeb tawg loj heev vim kev laus los ntawm kev nqus mus ntev ntawm lub teeb luv luv no.
Tau kawg, nyob rau hauv qhov tseeb ntau lawm thiab lub neej, yuav muaj ntau yam teeb meem xws li kub dissipation ntawm high-power LED dawb lub teeb chips, vim hais tias qhov ntau nws kim heev daim ntawv thov ntawm high-power LED dawb lub teeb, qhov ntau in-deb thiab nyuaj teeb meem yuav. tshwm!Cov yam ntxwv ntawm LED chips yog qhov kub siab heev yog tsim nyob rau hauv ib qho me me ntim.Lub peev xwm kub ntawm LED nws tus kheej yog me me, yog li cov cua sov yuav tsum tau ua tawm ntawm qhov ceev tshaj plaws, txwv tsis pub muaj qhov kub ntawm qhov sib txuas.Txhawm rau kos cov cua sov tawm ntawm lub nti kom ntau li ntau tau, ntau yam kev txhim kho tau ua rau ntawm cov qauv nti ntawm LED.Txhawm rau txhim kho cov cua sov dissipation ntawm LED nti nws tus kheej, qhov kev txhim kho tseem ceeb yog siv cov khoom siv substrate nrog thermal conductivity zoo dua.
Kev soj ntsuam LED teeb kub kuj tuaj yeem raug xa mus rau hauv micro-controller
Rau daim ntawv txhim kho ntawm NTC lub zog, yog tias koj xav ua kom tiav tus qauv zoo dua, nws kuj yog ib txoj hauv kev zoo los ua kom muaj kev ruaj ntseg zoo dua nrog MCU.Nyob rau hauv txoj kev loj hlob, cov xwm txheej ntawm LED lub teeb qhov chaw module tuaj yeem muab faib ua seb lub teeb puas yog txawm tias nws raug tua lossis tsis, nrog rau qhov kev txiav txim siab ntawm qhov ntsuas kub thiab ntsuas qhov ntsuas kub, lub teeb pom kev zoo tshaj plaws kev tswj hwm lub teeb pom kev zoo yog tsim. .
Piv txwv li, yog tias muaj lub teeb ceeb toom qhov kub thiab txias, qhov kub ntawm lub module tseem nyob rau hauv ib qho kev pom zoo los ntawm kev ntsuas kub, thiab txoj kev ib txwm muaj peev xwm tswj tau kom tsis txhob muaj qhov kub thiab txias los ntawm lub dab dej kub.Thiab thaum cov lus ceeb toom qhia tias qhov ntsuas kub tau mus txog qhov ntsuas ntsuas rau kev siv lub tshuab ua kom txias, MCU yuav tsum tswj xyuas cov kiv cua txias.Ib yam li ntawd, thaum qhov kub nkag mus rau hauv cheeb tsam, cov txheej txheem tswj yuav tsum tau tua lub teeb tam sim ntawd, thiab tib lub sijhawm lees paub qhov kub thiab txias dua 60 vib nas this lossis 180 vib nas this tom qab lub kaw lus kaw.Thaum qhov kub thiab txias ntawm LED solid-state lub teeb qhov chaw module nce mus txog tus nqi ib txwm, tsav lub LED teeb qhov chaw dua thiab txuas ntxiv tawm lub teeb.
Post lub sij hawm: Nov-09-2022