Iyo LED chip junction tembiricha inogadzirwa sei?
Chikonzero nei iyo LED ichipisa imhaka yekuti iyo yakawedzerwa simba remagetsi haisi yese inoshandurwa kuita simba rechiedza, asi chikamu chayo chinoshandurwa kuita kupisa simba.Kushanda kwechiedza che LED pari zvino 100lm/W chete, uye kugona kwayo kutendeuka kwe electro-optical kunongoita 20 ~ 30%.Izvi zvinoreva kuti, inenge 70% yesimba remagetsi rinoshandurwa kuva simba rekupisa.
Kunyanya, chizvarwa che LED junction tembiricha inokonzerwa nezvinhu zviviri.
1. Iyo yemukati quantum inobudirira haisi yakakwirira, ndiko kuti, kana ma electrons nemakomba akabatanidzwa zvakare, photons haigoni kugadzirwa 100%, iyo inowanzonzi "ikozvino kuvuza", iyo inoderedza chiyero chekubatanidza chevatakuri munharaunda yePN.Ikozvino inodonha inowedzerwa nemagetsi isimba rechikamu ichi, chinoshandurwa kuita simba rekupisa, asi chikamu ichi hachirevi chikamu chikuru, nekuti iyo yemukati photon inoshanda ikozvino iri pedyo ne90%.
2.Mapikicha anogadzirwa mukati haakwanisi kubudiswa kune kunze kwechiputi uye pakupedzisira anoshandurwa kuva kupisa.Ichi chikamu ndicho chikamu chikuru, nekuti ikozvino quantum inoshanda inonzi yekunze inongova 30%, uye yakawanda yacho inoshandurwa kuita kupisa.Kunyange zvazvo kupenya kwemwenje we incandescent kwakadzikira, kungoita 15lm/W chete, inoshandura rinenge simba rose remagetsi kuita simba rechiedza uye rinovheneka kunze.Nekuti mazhinji emagetsi anopenya infrared, iyo inopenya inoshanda yakadzikira, asi inobvisa dambudziko rekutonhora.Iye zvino vanhu vakawanda vanoteerera kupisa kwe LED.Izvi zvinodaro nekuti kuora kwechiedza kana hupenyu hwe LED hunoenderana zvakananga nekupisa kwayo kwejunction.
Yakakwirira-simba LED chena mwenje application uye LED chip kupisa dissipation mhinduro
Nhasi, zvigadzirwa zvemwenje zvichena zve LED zviri kuiswa zvishoma nezvishoma mukushandiswa kwakasiyana siyana.Vanhu vanonzwa kunakidzwa kunoshamisa kunounzwa ne-high-simba LED chena mwenje uye zvakare vari kunetseka nezve akasiyana anoshanda matambudziko!Chekutanga pane zvese, kubva kumhando yepamusoro-simba LED chena mwenje pachayo.High-power LED ichiri kutambura nekushaya kufanana kwekubuda kwechiedza, hupenyu hupfupi hwezvinhu zvekuisa chisimbiso, uye kunyanya dambudziko rekupisa kwekupisa kwe LED chips, iyo yakaoma kugadzirisa, uye haigoni kutora mukana wezvinotarisirwa kushandiswa kwe LED chena.Chechipiri, kubva pamutengo wemusika wepamusoro-simba LED chena mwenje.Yanhasi-yepamusoro-simba LED ichiri yakasarudzika chena mwenje chigadzirwa, nekuti mutengo wezvigadzirwa zvine simba repamusoro uchiri wakanyanya kukwira, uye tekinoroji ichiri kuda kuvandudzwa, saka machena emagetsi emagetsi e LED haagone kushandiswa nemunhu wese anoda. kuzvishandisa.Zvakaita seflexible LED kuratidza.Ngatiparadze matambudziko ane hukama e-high-simba LED kupisa kupisa.
Mumakore achangopfuura, nekuedza kwenyanzvi dzeindasitiri, mhinduro dzinoverengeka dzekuvandudza dzakatsanangurwa pakupisa kupisa kwemachipisi e-LED machipisi:
Ⅰ.Wedzera huwandu hwechiedza chinobudiswa nekuwedzera nzvimbo ye LED chip.
Ⅱ.Adopt pasuru ye akati wandei madiki-nzvimbo ma LED machipi.
Ⅲ.Shandura ma LED ekurongedza zvinhu uye fluorescent zvinhu.
Saka zvinokwanisika here kuvandudza zvachose dambudziko rekupisa kupisa kwepamusoro-simba LED chena zvigadzirwa zvemwenje kuburikidza nenzira nhatu dziri pamusoro apa?Kutaura zvazviri, zvinoshamisa!Chokutanga pane zvose, kunyange isu tichiwedzera nzvimbo ye LED chip, tinogona kuwana chiedza chinopenya (chiedza chinopfuura nechikamu chenguva) Nhamba yematanda pachikamu chechikamu ndiyo inopenya inoyerera, uye chikwata chiri ml).YakanakiraLED indasitiri.Isu tinotarisira kuzadzisa mwenje chena watinoda, asi nekuti nzvimbo chaiyo yakakurisa, pane zvimwe zvinopesana nemaitiro ekushandisa uye chimiro.
Saka hazvigoneke here kugadzirisa dambudziko repamusoro-simba re LED chena mwenje kupisa dissipation?Chokwadi, hazvibviri kugadzirisa.Tichifunga nezvematambudziko asina kunaka anokonzerwa nekungowedzera chip nzvimbo, LED chena vagadziri vemwenje vakavandudza pamusoro peiyo yepamusoro-simba LED chip nekuputira akati wandei madiki-nzvimbo ma LED machipisi maererano nekuvandudzwa kweiyo electrode chimiro uye iyo flip-chip. chimiro kuti uwane 60lm./W yakakwira inopenya flux uye yakaderera inopenya kushanda nekupisa kwakanyanya.
Muchokwadi, pane imwe nzira inogona kunyatso kuvandudza dambudziko rekupisa kupisa kwepamusoro-simba LED machipisi.Iko ndiko kutsiva iyo yapfuura purasitiki kana plexiglass nesilicone resin kune yayo chena mwenje yekurongedza zvinhu.Kutsiva iyo yekurongedza hakugone chete kugadzirisa dambudziko rekupisa kupisa kweiyo LED chip, asi zvakare kunatsiridza hupenyu hweiyo chena LED, iyo iri kunyatso kuuraya shiri mbiri nedombo rimwe.Chandinoda kutaura ndechekuti dzinenge dzese dzakakwirira simba chena mwenje LED zvigadzirwa senge simba repamusoro LED chena mwenje unofanirwa kushandisa silicone seyakavharidzirwa zvinhu.Sei silica gel ichifanira kushandiswa semidziyo yekurongedza mune yakakwirira-simba LED izvozvi?Nekuti silica gel inotora isingasviki 1% yechiedza chewavelength yakafanana.Zvisinei, kutorwa kwe epoxy resin kusvika 400-459nm chiedza chakakwirira kusvika ku45%, uye zviri nyore kukonzera kuora kwakakomba kwechiedza nekuda kwekuchembera kunokonzerwa nekutora kwenguva refu kwechiedza chepfupi-wavelength.
Ehe, mukugadzirwa chaiko uye hupenyu, pachava nematambudziko mazhinji akadai sekupisa kwekupisa kwe-high-simba LED chena machipisi emwenje, nekuti iyo yakanyanya kuwanda mashandisirwo epamusoro-simba re LED chena mwenje, zvakanyanya zvakadzama uye zvakaoma matambudziko achaita. oneka!Hunhu hwema LED machipisi Kupisa kwakanyanya kunogadzirwa muvhoriyamu diki kwazvo.Kupisa kweiyo LED pachayo idiki kwazvo, saka kupisa kunofanirwa kuitiswa nekumhanya kwakanyanya, zvikasadaro tembiricha yepamusoro inogadzirwa.Kuti utore kupisa kunze kwechiputi zvakanyanya sezvinobvira, kuvandudzwa kwakawanda kwakaitwa pane chip chimiro che LED.Kuti uvandudze kupisa kwekupisa kweiyo LED chip pachayo, iyo huru yekuvandudza ndeye kushandisa substrate zvinhu zvine zvirinani thermal conductivity.
Monitoring LED mwenje tembiricha inogona zvakare kutumirwa kune micro-controller
Kune iyo yakagadziridzwa fomu yeNTC simba, kana iwe uchida kuwana dhizaini iri nani, iri zvakare nzira ine hunyanzvi yekuita yakanyatso chengetedzo dhizaini neMCU.Muchirongwa chekusimudzira, chimiro cheiyo LED light source module inogona kukamurwa kuti ingave mwenje Ingave yakadzimwa kana kwete, nechirongwa chekutonga cheyambiro yetembiricha uye kuyerwa kwetembiricha, imwe yakanyatso huchenjeri yekuvhenekesa mwenje nzira inovakwa. .
Semuenzaniso, kana paine yambiro yekudziya kwemwenje, tembiricha yemodule ichiri mukati meyero inogamuchirika kuburikidza nekuyerwa kwekushisa, uye nzira yakajairika inogona kuchengetedzwa kuti iparadze tembiricha yekushanda kuburikidza nekunyura kwekupisa.Uye kana yambiro ichizivisa kuti tembiricha yakayerwa yasvika pabhenji rekushandisa inoshanda yekutonhodza michina, iyo MCU inofanirwa kudzora mashandiro efivha inotonhorera.Saizvozvo, kana tembiricha ichipinda munzvimbo, dhizaini yekudzora inofanira kubva yadzima sosi yemwenje, uye panguva imwechete inosimbisa tembiricha zvakare 60 masekondi kana 180 masekonzi mushure mekudzima system.Kana tembiricha ye LED solid-state light source module ichisvika pane yakajairika kukosha, tyaira sosi yemwenje ye LED zvakare uye ramba uchiburitsa mwenje.
Nguva yekutumira: Nov-09-2022