Kodi kutentha kwa LED chip junction kumapangidwa bwanji?
Chifukwa chomwe kuwala kwa LED kumatenthetsera ndi chifukwa chakuti mphamvu zowonjezera zamagetsi sizimasinthidwa kukhala mphamvu zowunikira, koma gawo lina limasandulika mphamvu ya kutentha.Kuwala kwa LED pakali pano ndi 100lm/W yokha, ndipo kutembenuka kwake kwa electro-optical ndi pafupifupi 20-30%.Izi zikutanthauza kuti, pafupifupi 70% ya mphamvu yamagetsi imasandulika kukhala mphamvu ya kutentha.
Makamaka, m'badwo wa LED mphambano kutentha amayamba ndi zinthu ziwiri.
1. Kuthamanga kwa quantum mkati sikuli kwakukulu, ndiko kuti, pamene ma electron ndi mabowo akuphatikizidwanso, ma photon sangathe kupangidwa 100%, omwe nthawi zambiri amatchedwa "kuthamanga kwamakono", zomwe zimachepetsanso kubwereza kwa onyamula katundu m'dera la PN.Kuthamanga kwaposachedwa komwe kumachulukitsidwa ndi voteji ndi mphamvu ya gawo ili, lomwe limasandulika kukhala mphamvu ya kutentha, koma gawo ili silimawerengera gawo lalikulu, chifukwa mphamvu ya photon yamkati tsopano ili pafupi ndi 90%.
2.Mafotoni opangidwa mkati sangathe kutulutsidwa kunja kwa chip ndipo potsiriza amasandulika kutentha.Gawo ili ndilo gawo lalikulu, chifukwa mphamvu yaposachedwa ya quantum yotchedwa kunja ndi pafupifupi 30%, ndipo zambiri zimasandulika kutentha.Ngakhale kuwala kowala kwa nyali ya incandescent kumakhala kochepa kwambiri, pafupifupi 15lm / W, imasintha pafupifupi mphamvu zonse zamagetsi kukhala mphamvu zowunikira ndikuzitulutsa.Chifukwa chakuti mphamvu zambiri zowala ndi infrared, kuwala kowala kumakhala kochepa kwambiri, koma kumathetsa vuto lozizira.Tsopano anthu ambiri amalabadira kutentha kwa LED.Izi ndichifukwa choti kuwonongeka kwa kuwala kapena moyo wa LED umagwirizana mwachindunji ndi kutentha kwake.
Kuyika kwamphamvu kwamphamvu kwa LED koyera komanso njira zothetsera kutentha kwa chipangizo cha LED
Masiku ano, zowunikira zoyera za LED zikugwiritsidwa ntchito pang'onopang'ono m'magawo osiyanasiyana.Anthu amamva chisangalalo chodabwitsa chomwe chimabwera ndi kuwala koyera kwamphamvu kwa LED komanso akuda nkhawa ndi zovuta zosiyanasiyana!Choyamba, kuchokera ku chikhalidwe cha kuwala koyera kwa LED komweko.LED yamphamvu kwambiri idakali ndi vuto losafanana bwino la kutulutsa kwa kuwala, moyo wautali wazinthu zosindikizira, makamaka vuto la kutentha kwa tchipisi ta LED, lomwe ndi lovuta kulithetsa, ndipo silingatengere mwayi pazabwino zomwe zikuyembekezeka kugwiritsa ntchito zoyera za LED.Kachiwiri, kuchokera pamtengo wamsika wamagetsi amphamvu kwambiri a LED.Ma LED amakono amphamvu kwambiri akadali chinthu chowala choyera, chifukwa mtengo wazinthu zamphamvu kwambiri udakali wokwera kwambiri, ndipo ukadaulo ukufunikabe kuwongolera, kotero kuti zopangira zoyera za LED sizingagwiritsidwe ntchito ndi aliyense amene akufuna. kuwagwiritsa ntchito.Mongaflexible LED chiwonetsero.Tiyeni tiwononge mavuto okhudzana ndi kutentha kwamphamvu kwa LED.
M'zaka zaposachedwa, ndi khama la akatswiri amakampani, njira zingapo zowongolera zaperekedwa pakuchotsa kutentha kwa tchipisi tamphamvu kwambiri za LED:
Ⅰ.Wonjezerani kuchuluka kwa kuwala komwe kumatulutsa powonjezera dera la chipangizo cha LED.
Ⅱ.Adopt phukusi la tchipisi tating'ono tating'ono ta LED.
Ⅲ.Sinthani zida zopangira ma LED ndi zida za fulorosenti.
Ndiye kodi ndizotheka kukonza bwino vuto la kutentha kwamagetsi amphamvu kwambiri a LED pogwiritsa ntchito njira zitatu zomwe zili pamwambazi?Ndipotu n’zochititsa chidwi!Choyamba, ngakhale timawonjezera gawo la chipangizo cha LED, titha kupeza kuwala kowala kwambiri (kuwunika kumadutsa mugawo la nthawi) Chiwerengero cha matabwa pa malo a unit ndi kuwala kowala, ndipo unit ndi ml).Ndi zabwino kwaMakampani a LED.Tikuyembekeza kukwaniritsa kuwala koyera komwe tikufuna, koma chifukwa malo enieniwo ndi aakulu kwambiri, pali zochitika zina zotsutsana ndi ntchito ndi ndondomeko.
Ndiye kodi n'kosathekadi kuthetsa vuto la kutentha kwamphamvu kwa LED koyera?Ndithudi, sikutheka kuthetsa.Poganizira zovuta zoyipa zomwe zimadza chifukwa chongowonjezera malo a chip, opanga kuwala koyera kwa LED apanga bwino pamwamba pa chipangizo champhamvu champhamvu cha LED poyika tchipisi tating'ono tating'ono ta LED molingana ndi kukonza kwa ma elekitirodi ndi flip-chip. kapangidwe kukwaniritsa 60lm./W kuwala kowala kwambiri komanso kuwala kochepa kowala ndi kutentha kwakukulu.
M'malo mwake, pali njira ina yomwe ingathe kusintha bwino vuto la kutentha kwa tchipisi tamphamvu kwambiri za LED.Ndiko kuti m'malo mwa pulasitiki wam'mbuyo kapena plexiglass ndi silikoni utomoni kwa zinthu zake zoyera kuwala ma CD.Kusintha zinthu zonyamula katundu sikungothetsa vuto la kutentha kwa chipangizo cha LED, komanso kusintha moyo wa LED yoyera, yomwe imapha mbalame ziwiri ndi mwala umodzi.Zomwe ndikufuna kunena ndikuti pafupifupi zida zonse zamphamvu zoyera zoyera za LED monga mphamvu yayikulu yowala yoyera ya LED ziyenera kugwiritsa ntchito silikoni ngati cholumikizira.Chifukwa chiyani gelisi ya silica iyenera kugwiritsidwa ntchito ngati zonyamula mu LED yamphamvu kwambiri tsopano?Chifukwa gel osakaniza a silika amatenga zosakwana 1% ya kuwala kwa utali wofanana.Komabe, kuyamwa kwa epoxy resin ku kuwala kwa 400-459nm ndikokwera kwambiri mpaka 45%, ndipo ndikosavuta kuwononga kwambiri kuwala chifukwa cha ukalamba wobwera chifukwa cha kuyamwa kwanthawi yayitali kwa kuwala kwautali waufupi.
Zachidziwikire, pakupanga zenizeni ndi moyo, padzakhala mavuto ambiri monga kutentha kwamphamvu kwa tchipisi tating'ono tating'ono ta LED, chifukwa kugwiritsa ntchito kwambiri magetsi amphamvu kwambiri a LED kumapangitsa kuti pakhale zovuta zozama komanso zovuta. kuwoneka!Makhalidwe a tchipisi ta LED ndi Kutentha kwambiri kumapangidwa mochepa kwambiri.Kutentha kwa LED komweko kumakhala kochepa kwambiri, kotero kutentha kumayenera kuchitidwa mofulumira kwambiri, mwinamwake kutentha kwakukulu kumapangidwa.Pofuna kutulutsa kutentha kuchokera ku chip momwe mungathere, kusintha kwakukulu kwapangidwa pa chipangizo cha LED.Pofuna kukonza kutentha kwa chipangizo cha LED chokha, kusintha kwakukulu ndiko kugwiritsa ntchito gawo lapansi lokhala ndi matenthedwe abwino.
Kuyang'anira kutentha kwa nyali ya LED kungathenso kutumizidwa ku micro-controller
Kwa mawonekedwe abwino a mphamvu ya NTC, ngati mukufuna kupanga mapangidwe abwinoko, ndi njira yabwino kwambiri yopangira chitetezo chokhazikika ndi MCU.Mu polojekiti yachitukuko, mawonekedwe a gawo la gwero la kuwala kwa LED atha kugawidwa ngati kuwalako Kaya kwazimitsidwa kapena ayi, ndi ndondomeko ya ndondomeko ya chenjezo la kutentha ndi kuyeza kwa kutentha, njira yabwino yowunikira kuyatsa imapangidwa. .
Mwachitsanzo, ngati pali chenjezo la kutentha kwa nyali, kutentha kwa gawoli kumakhalabe mumtundu wovomerezeka kupyolera muyeso ya kutentha, ndipo njira yachibadwa ikhoza kusungidwa kuti iwonongeke kutentha kwa ntchito kupyolera mu kutentha kwa kutentha.Ndipo chenjezo likadziwitsa kuti kutentha kwake kwafika pachizindikiro chogwiritsa ntchito njira yoziziritsira, MCU iyenera kuwongolera magwiridwe antchito a fani yozizirira.Momwemonso, kutentha kukalowa m'derali, makina oyendetsera magetsi ayenera kuzimitsa nthawi yomweyo, ndipo nthawi yomweyo amatsimikiziranso kutentha kwa masekondi 60 kapena masekondi 180 pambuyo pozimitsa.Kutentha kwa gawo la LED solid-state light source module ikafika pamtengo wabwinobwino, yendetsaninso gwero la kuwala kwa LED ndikupitiliza kutulutsa kuwala.
Nthawi yotumiza: Nov-09-2022