M'zaka zaposachedwa, ndi kupita patsogolo kofulumira kwaukadaulo waukadaulo wa LED, kugwiritsa ntchito ma LED kwakhala okhwima kwambiri.Zida za LED zimadziwika kuti "magwero obiriwira obiriwira" chifukwa cha kukula kwake kochepa, mphamvu zochepa, moyo wautali wautumiki, kuwala kwakukulu, kuteteza chilengedwe, kulimba ndi kulimba, komanso nyali zazikulu zopulumutsa mphamvu za LED.Pogwiritsa ntchito gwero lowala kwambiri komanso lamphamvu kwambiri la LED, lokhala ndi mphamvu zogwiritsa ntchito mphamvu zambiri, limatha kupulumutsa magetsi opitilira 80% kuposa nyali zachikhalidwe, ndipo kuwalako ndi kuwirikiza ka 10 kuposa kwa nyali za incandescent pansi pa mphamvu yomweyo.Kutalika kwa moyo ndi maola oposa 50,000, omwe ndi oposa 50 kuposa nyali zachikhalidwe za tungsten.Kuwotcherera kwa LED kumakhala kodalirika kwambiri kwaukadaulo waukadaulo-eutectic, womwe umatsimikizira moyo wautali wa LED.Kuwoneka bwino kowoneka bwino kumatha kufika 80lm/W kapena kupitilira apo, mitundu yosiyanasiyana ya kutentha kwa nyale ya LED ikupezeka, index yotulutsa mitundu yayikulu, komanso kutulutsa kwamitundu yabwino.Ukadaulo wa chingwe cha LED ukupita patsogolo tsiku lililonse, kuwala kwake kowala kukupanga zotsogola modabwitsa, ndipo mtengo ukutsika nthawi zonse.Monga chinthu chowunikira, chalowa m'nyumba ndi m'misewu yambirimbiri.
Komabe, zopangira zowunikira za LED sizikhala ndi zolakwika zilizonse.Monga zinthu zonse zamagetsi, magetsi a LED amatulutsa kutentha pakagwiritsidwa ntchito, zomwe zimapangitsa kuti kutentha kwapakati komanso kutentha kwawo kuchuluke.LED ndi gwero loyatsa lolimba lomwe lili ndi malo ang'onoang'ono otulutsa kuwala ndi kachulukidwe kakang'ono kamakono kudzera mu chip panthawi yogwira ntchito;pamene mphamvu ya chipangizo chimodzi cha LED ndi yaying'ono, ndipo kutulutsa kowala kowala kumakhala kochepa.Chifukwa chake, zikagwiritsidwa ntchito pazida zowunikira, nyali zambiri zimafunikira Kuphatikiza kwa magwero angapo a kuwala kwa LED kumapangitsa kuti chipangizocho chikhale cholimba kwambiri.Ndipo chifukwa kutembenuka kwa photoelectric kwa gwero la kuwala kwa LED sikuli kwakukulu, pafupifupi 15% mpaka 35% ya mphamvu yamagetsi imasinthidwa kukhala kuwala, ndipo zina zonse zimasinthidwa kukhala mphamvu ya kutentha.Choncho, pamene chiwerengero chachikulu cha magwero a kuwala kwa LED chikugwira ntchito pamodzi, mphamvu zambiri za kutentha zidzapangidwa.Ngati kutenthaku sikungathe kuthetsedwa mwachangu momwe kungathekere, kungayambitse kutentha kwa mphambano ya gwero la kuwala kwa LED kukwera, kuchepetsa ma photon opangidwa ndi chip, kuchepetsa kutentha kwa mtundu, kufulumizitsa ukalamba wa chip, ndi kufupikitsa moyo. cha chipangizo.Chifukwa chake, kusanthula kwamafuta ndi kapangidwe kabwino ka mawonekedwe a kutentha kwa nyali za LED kumakhala kofunikira kwambiri.
Kutengera zaka zachitukuko cha zinthu za LED pamsika, dongosolo lathunthu lamalingaliro apangidwe lapangidwa.Monga wopanga zida zowunikira, ndizofanana ndi kuyimirira pamapewa a zimphona.Komabe, sikuti n’kosavuta kufika pamwamba pa mapewa a zimphona.Pali mavuto ambiri omwe amayenera kugonjetsedwa pakupanga tsiku ndi tsiku.Mwachitsanzo, pakuwona mtengo, pakupanga, ndikofunikira kukwaniritsa zofunikira za kutentha kwa chinthucho, komanso kuchepetsa mtengo;pakadali pano, njira yomwe imagwiritsidwa ntchito kwambiri pamsika ndikugwiritsa ntchito zipsepse za aluminiyamu aloyi pakuwotcha kutentha.Mwanjira imeneyi, okonza amatani Kuti adziwe mtunda wapakati pakati pa mapiko ndi mapikowo ndi kutalika kwa chipsepsezo, komanso chikoka cha kapangidwe ka chinthucho pamayendedwe a mpweya ndi momwe malo opangira kuwala, amathandizira. kumayambitsa kutentha kosasinthasintha.Awa ndi mavuto omwe amavutitsa opanga.
Pakupanga nyali za LED, pali njira zambiri zochepetsera kutentha kwa mphambano ya LED ndikuwonetsetsa moyo wa LED: ① Limbikitsani kuwongolera kutentha (pali njira zitatu zosinthira kutentha: kuwongolera kutentha, kusinthanitsa kutentha kwa convection ndi kusinthana kwa kutentha kwa radiation) , ②, sankhani tchipisi tating'onoting'ono ta LED, ③, kutsitsa kapena kulemetsa gwiritsani ntchito mphamvu yovotera kapena yamakono ya LED (ndikulimbikitsidwa kugwiritsa ntchito 70% ~ 80% ya mphamvu yovotera), yomwe imatha kuchepetsa mphambano ya LED. kutentha.
Ndiye kulimbikitsa kutentha conduction, tingatengere njira zotsatirazi: ①, wabwino yachiwiri kutentha dissipation limagwirira;②, kuchepetsa kukana kwamafuta pakati pa mawonekedwe oyika a LED ndi njira yachiwiri yochotsera kutentha;③, kuwonjezera kukhudzana pakati pa LED ndi yachiwiri kutentha dissipation limagwirira The matenthedwe madutsidwe pamwamba;④, kapangidwe kake pogwiritsa ntchito mfundo yolumikizira mpweya.
Choncho, kutentha kwa kutentha ndi kusiyana kosatheka kwa opanga mankhwala mu makampani owunikira pa nthawi ino.Pakadali pano, ndikukhulupirira kuti ndikupita patsogolo kwaukadaulo, zotsatira za kutentha kwa ma LED zitha kuchepera pang'ono.Tikuyeseranso kupeza njira zochepetsera kutentha kwa mphambano ya ma LED, kutsimikizira moyo wa LED, ndikupanga zinthu zotsika mtengo pogwiritsa ntchito njira zogwiritsira ntchito..
Nthawi yotumiza: Oct-22-2020