Chikonzero nei sosi yemwenje ye LED ichidziya
Iyo PN junction yekudziya ye LED inotanga kuitiswa pamusoro peiyo wafer newafer semiconductor zvinhu pachayo, iyo ine kumwe kupikisa kupisa. Kubva pakuona kwechikamu che LED, zvichienderana nekugadzirwa kwepakeji, kunewo kupisa kwekushisa kwehukuru hwakasiyana pakati pechifukidzo nemubati. Huwandu hwezviviri izvi zvinopikisa zvinopisa zvinoumba kupisa kwekupisa Rj-a ye LED. Kubva pakuona kwemushandisi, iyo Rj-parameter yeimwe LED haigone kuchinjwa. Iri idambudziko iro makambani ekurongedza e LED anofanirwa kudzidza, asi zvinokwanisika kuderedza iyo Rj-kukosha nekusarudza zvigadzirwa kana modhi kubva kune vakasiyana vagadziri.
Mumagetsi e LED, nzira yekupisa yekupisa ye LED yakaoma. Nzira huru ndeye LED-PCB-heatsink-fluid. Semugadziri wezvivheneko, basa rine zvarinoreva nderokukwidziridza iyo luminaire zvinhu uye kupisa kupisa chimiro kudzikisa ma LED zvikamu zvakanyanya sezvinobvira. Thermal resistance pakati pemvura.
Semutakuri wekusimudza zvikamu zvemagetsi, zvikamu zve LED zvinonyanya kubatanidzwa kubhodhi redunhu nekutengesa. Iko kupikisa kwese kupisa kwesimbi-based circuit board inenge iduku. Inowanzo shandiswa imhangura substrates uye aluminium substrates, uye iyo aluminium substrates yakadzikira mumutengo. Yakave yakagamuchirwa zvakanyanya neindasitiri. Kupisa kwekupisa kwealuminium substrate kunosiyana zvichienderana nemaitiro evagadziri vakasiyana. Iyo inofungidzirwa yekudzivirira kupisa ndeye 0.6-4.0 ° C / W, uye mutsauko wemutengo wakakura. Iyo aluminiyamu substrate kazhinji ine matatu emuviri akaturikidzana, wiring layer, insulating layer, uye substrate layer. Iyo yemagetsi conductivity yezvakajairwa magetsi insulating zvinhu zvakare yakashata zvakanyanya, saka kupisa kwekupisa kunobva zvakanyanya kubva kune insulating layer, uye iyo insulating zvinhu zvinoshandiswa zvakasiyana. Pakati pavo, iyo ceramic-based insulating medium ine diki yekupisa kupisa. Iyo isingadhure aluminium substrate inowanzoita girazi fiber insulating layer kana resin insulating layer. Iko kupikisa kwemafuta kunoenderanawo zvakanaka nehupamhi hweiyo insulation layer.
Pasi pemamiriro emutengo uye kuita, iyo aluminium substrate mhando uye aluminium substrate nzvimbo inosarudzwa zvine musoro. Kusiyana neizvi, dhizaini yakaringana yechimiro chekupisa sink uye yakanakisa kubatana pakati pekupisa kunyura uye aluminium substrate ndiyo kiyi yekubudirira kwekugadzira luminaire. Chinhu chaicho pakusarudza kuwanda kwekupisa kupisa ndiyo inosangana nenzvimbo yekupisa inonyura nemvura uye kuyerera kwemvura. Magetsi emagetsi e LED anongoraswa neakasikwa convection, uye nemwaranzi yekupisa ndiyo imwe yenzira huru dzekupisa kupisa.
Naizvozvo, tinogona kuongorora zvikonzero zvekutadza kwemarambi e LED kudzima kupisa:
1. Chitubu chechiedza che LED chine simba guru rekupisa, uye chiedza chechiedza hachiparadzi. Kushandiswa kwemafuta ekupisa kuchaita kuti kufamba kwekupisa kupisa kukundikana.
2.The aluminium substrate inoshandiswa sePCB connection light source. Sezvo iyo aluminium substrate ine akawanda ekupisa kwekupisa, iyo inopisa sosi yemwenje sosi haigone kufambiswa, uye kushandiswa kweiyo thermal conductive paste kunogona kuita kuti kupisa kwekupisa kukundikana.
3.Hapana nzvimbo yekupisa kwekushisa kwechiedza-emitting surface, iyo ichaita kuti kupisa kwekushisa kwechiedza che LED kukundikana, uye kuora kwechiedza kunowedzera. Zvikonzero zvitatu zviri pamusoro apa ndizvo zvikonzero zvikuru zvekukundikana kwemidziyo yemwenje ye LED muindasitiri, uye hapasisina mhinduro yakakwana. Mamwe makambani makuru anoshandisa iyo ceramic substrate kuti iparadze mwenje webead package, asi haigone kushandiswa zvakanyanya nekuda kwekudhura.
Naizvozvo, dzimwe gadziridzo dzakakurudzirwa:
1. Kusvibiswa kwepamusoro kwekupisa kwekupisa kwemwenje we LED ndeimwe yenzira dzekugadzirisa zvinobudirira kukwanisa kwekupisa kupisa.
Surface roughening zvinoreva kuti hapana nzvimbo yakatsetseka inoshandiswa, iyo inogona kuwanikwa nenzira dzemuviri nemakemikari. Kazhinji, inzira yejecha kuputika uye oxidation. Coloring zvakare ikemikari nzira, iyo inogona kupedzwa pamwe chete neoxidation. Paunenge uchigadzira iyo mbiri yekukuya chishandiso, zvinokwanisika kuwedzera dzimwe mbabvu kumusoro kuti uwedzere nzvimbo yepamusoro kuti uvandudze kupisa kwekupisa kugona kwemwenje we LED.
2. Nzira yakajairika yekuwedzera kupisa kwemwaranzi kugona ndeye kushandisa dema remavara epamusoro kurapwa.