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Ukukhipha Ukushisa: Ukukhanyisa kwe-LED yesikhukhula sangaphandle

Ukuchithwa kokushisa kwama-LED anamandla amakhulu
I-LED iyidivayisi ye-optoelectronic, kuphela u-15% ~ 25% wamandla kagesi azoguqulwa abe amandla okukhanya ngesikhathi sokusebenza kwawo, futhi amanye amandla kagesi cisheziguqulwa zibe amandla okushisa, okwenza izinga lokushisa le-LED libe phezulu.Kuma-LED anamandla amakhulu, ukuchithwa kokushisa kuyindaba enkulu edinga uphenyo olukhethekile.Isibonelo, uma ukusebenza kahle kokuguqulwa kwe-photoelectric kwe-LED emhlophe engu-10W kungu-20% njengoba kushiwo ngenhla, okungukuthi, u-8W wamandla kagesi aguqulelwa amandla okushisa.Uma kungekho zinyathelo zokukhipha ukushisa ezingeziwe, izinga lokushisa eliyinhloko le-LED enamandla amakhulu lizokhuphuka ngokushesha.Uma inani layo le-TJ Uma ukuphakama kudlula izinga lokushisa eliphezulu elivumelekile (ngokuvamile lingu-150 ℃), i-LED enamandla amakhulu izolimala ngenxa yokushisa ngokweqile.Ngakho-ke, ekwakhiweni kwezibani zamandla aphezulu e-ED, umsebenzi wokuklama obaluleke kakhulu umklamo wokukhipha ukushisa.

PCB TJ
PCB TJ2

Ukwengeza, ekubalweni kokushabalaliswa kokushisa kwamadivayisi kagesi ajwayelekile (njengamandla kagesi angu-1C), inqobo nje uma izinga lokushisa lokuhlangana lingaphansi kwezinga lokushisa eliphezulu elivumelekile le-junction (ngokuvamile li-125°C), kwanele.Kodwa edizayini yokulahla ukushisa kwe-LED enamandla amakhulu, imfuneko ye-TJ VALUE iphansi kakhulu kuno-125℃.Isizathu siwukuthi i-TJ inethonya elikhulu esilinganisweni sokukhishwa kokukhanya nempilo ye-LED: ukuphakama kwe-TJ, ukwehla kwezinga lokukhishwa kokukhanya kanye neminyaka yokuphila ye-LED ibe mfushane.

Indlela yokukhipha ukushisa yamandla aphezulu we-LED.
Ama-LED anamandla amakhulu anamathisela ukubaluleka okukhulu ekulahlekeni kokushisa ekwakhiweni kwesakhiwo.Abanye abaklami banephedi enkulu yensimbi yokukhipha ukushisa ngaphansi kwefasi, engenza ukushisa kwefa kusakazeke ngaphandle ngephedi yokukhipha ukushisa.Ama-LED anamandla amakhulu adayiswa ebhodini eliphrintiwe (PCB).Indawo engezansi yephedi yokukhipha ukushisa ishiselwe nge-copper-clad ye-PCB, futhi isendlalelo esikhulu se-copper-clad sisetshenziswa njengendawo yokukhipha ukushisa.Ukuze kuthuthukiswe ukusebenza kahle kokukhipha ukushisa, i-PCB enezingqimba ezimbili zethusi isetshenziswa.Lesi esinye sezakhiwo ezilula kakhulu zokulahla ukushisa.

PCB TJ4
PCB TJ3
PCB TJ 双层敷铜层的PCB2
PCB TJ 双层敷铜层的PCB

Isikhathi sokuthumela: Mar-02-2022