Umhlahlandlela Wokusebenza we-Aluminium LED PCB ngokwezifiso

I-PCB ye-LED ye-aluminium eyenziwe ngokwezifiso eyenzelwe isibani somsila sezimoto kanye nenye eyenzelwe ukukhanya kwezitshalo zabelana ngesakhiwo esifanayo esiyisisekelo - isekethe yethusi ku-dielectric esisekelweni se-aluminium - futhi cishe akukho okunye. Ubuningi bamandla, ubunzima bomjikelezo wokushisa, iphrofayili yokudlidliza, ukuvezwa komswakama, izidingo zomthetho, kanye nezindleko zomjikelezo wokufaka esikhundleni konke kuhlukile ngokusetshenziswa. Lesi sihloko sichaza izinqumo ze-PCB ye-LED ye-aluminium eyenziwe ngokwezifiso eziqhutshwa yindawo yokusetshenziswa kokugcina, hhayi "ngomkhuba omuhle kakhulu" ojwayelekile.

Ama-PCB e-LED ezimoto: Ukushaqeka Okushisayo, Ukudlidliza, kanye Nokuphepha Okusebenzayo

Ukuzulazula kwesihloko

1. Ama-PCB e-LED ezimoto: Ukushaqeka Okushisayo, Ukudlidliza, kanye Nokuphepha Okusebenzayo
2. Ama-PCB e-Horticultural LED: Ubuningi Bamandla E-Full-Spectrum kanye Nomthwalo Wokushisa
3. Ama-LED Arrays asemanzini nawangaphandle: Ukugqwala kanye nokuvezwa kwemvelo
4. Ukukhanyisa Kwezokwelapha Nokuhlinzwa: Ukuhambisana Kwezinto Eziphilayo Nokuhlanza
5. Ukukhanyisa Kwezimboni Eziphezulu: Ukuhlanganiswa Komklamo Wamanje Ophezulu kanye Nebha Yamabhasi
6. Ukufanisa Ibanga Le-Aluminium kanye ne-Dielectric kuhlelo ngalunye
7. Imibuzo Evame Ukubuzwa

Izinhlelo zokusebenza ze-LED zezimoto zihlanganisa izibani zekhanda, izibani zangemuva, izibani ze-ambient zangaphakathi, kanye nokukhanya kwedeshibhodi. Indawo eshisayo neyemishini ifuna kakhulu:

Ukujikeleza kokushisa : Amabhodi e-LED ezimoto ajikeleza kusuka ku-−40°C kuya ku-+125°C noma ngaphezulu ekusetshenzisweni kwe-injini. Ama-dielectric ajwayelekile e-polymer-composite abhekana nokucindezeleka okungafani kwe-CTE kulezi zindlela eziphakeme. Ama-PCB e-LED ezimoto ngokwezifiso asebenzisa amazinga e-dielectric ane-Tg ephezulu (>150°C) kanye ne-CTE ephansi, okuqinisekiswa ngokuhlolwa kokushaqeka kokushisa ngokwe-AEC-Q200 noma i-JEDEC JESD22-A104.

Ukudlidliza : Ukudlidliza komgwaqo kudala ukucindezeleka komshini okungu-5–2000 Hz. Ukwehluleka kwamalunga e-solder kuma-PCB e-aluminium LED ezindaweni ezidlidliza kubangelwa kakhulu ukukhathala. Imininingwane eyenziwe ngokwezifiso ifaka: Ukuphela kobuso be-ENIG (hhayi i-HASL, edala amalunga e-solder angalingani), ukuvuleka okukhulu kwe-pad-to-body kumaphakheji e-LED, kanye nakwezinye izimo ukugoqa kwenhlangano ngemva kokugeleza kabusha.

I-IATF 16949 kanye ne-PPAP : Amaketanga okuphakelwa kwezimoto adinga ukukhiqizwa okuhambisana ne-IATF 16949 kanye nemibhalo ye-PPAP (Production Part Approval Process) yanoma yiliphi ibhodi elingena emotweni. Lokhu kufaka phakathi imibiko yokulinganisa ubukhulu, izifundo zamandla (i-Cpk yobukhulu be-dielectric, ubukhulu bethusi), kanye nama-FMEA enqubo. I-Highleap Electronics isekela imibhalo yezinga le-PPAP yamakhasimende e-LED yezimoto.

Ukwabelana ngesinki samanje : Izintambo ze-LED zezimoto zivame ukwabelana ngesinki samanje esivamile esinokufiphala okulawulwa yi-firmware. Ama-PCB e-LED e-aluminium enziwe ngokwezifiso kulezi zinhlelo zokusebenza adinga umzila wokulandelela ohlukanisa izintambo zamanje ukuze kuvinjelwe ukuhlangana kokushisa okubangela ukuqonda okungalingani kokufiphala.

Ama-PCB e-Horticultural LED: Ubuningi Bamandla E-Full-Spectrum kanye Nomthwalo Wokushisa

Izibani zokukhulisa ze-LED zimelela ukusetshenziswa kwamandla okuqhubekayo okuphezulu kakhulu kwama-PCB e-aluminium LED ekukhiqizweni komthamo. I-horticulture ejwayelekile engu-720W isebenza ngama-9–12 W/cm² endaweni ye-LED array, ngaphandle kokupholisa ngaphandle komjikelezo. Izidingo ze-PCB ezenziwe ngokwezifiso:

Ukukhetha i-dielectric : 2.0–3.0 W/m·K i-dielectric iyindlela ejwayelekile yokulima izitshalo. Ku-3.0 W/m·K, izinga lokushisa le-LED junction ye-10 W die lingaba ngaphansi ngo-12–18°C kune-1.0 W/m·K ngaphansi kwezimo ezifanayo, okwandisa isikhathi sokuphila se-L70 kusukela emahoreni angu-~30,000 kuya kwangu-50,000+.

Imaski ye-solder emhlophe : Ama-LED ahlanganisiwe ahlanganisa ama-LED abomvu, aluhlaza okwesibhakabhaka, abomvu kakhulu, namhlophe. Imaski ye-solder emhlophe ibonisa ama-photon aphuthelwa yi-optic eyinhloko emuva ekhanophini, ethola u-4-7% wokukhishwa kwe-photon okuphelele ngaphandle kokushintsha kukagesi.

Isisindo sethusi : Ama-array agcwele ama-spectrum adweba u-3–8 A ngentambo ngayinye adinga ubuncane bethusi obungu-2 oz. Kuma-fixtures angaphezu kuka-600W, ama-trace ethusi angu-3 oz avimbela ukushisa okumelana nokufaka umthwalo wokushisa we-LED kanye nokuwohloka kokufana kwe-PAR kulo lonke i-array.

Ubukhulu bephaneli : Amabhodi okulima avame ukuba nobubanzi obugcwele — kuvamile u-250 × 500 mm noma u-200 × 600 mm. Qinisekisa ikhono losayizi wephaneli ye-aluminium yasefektri ngaphambi kokuqedela ubukhulu bebhodi. I-Highleap Electronics isekela ukukhiqizwa kwe-PCB yefomethi enkulu yezingxenye ze-aluminium.

Ama-LED Arrays asemanzini nawangaphandle: Ukugqwala kanye nokuvezwa kwemvelo

Amabhodi e-LED ezindaweni zasolwandle, zangaphandle, kanye nasogwini abhekene nomswakama oqhubekayo, ukufuthwa ngosawoti, kanye nokuchayeka ku-UV. Isisekelo se-aluminium ngokwaso simelana nokugqwala ngokufanele, kodwa ukuchayeka emaphethelweni kanye nezindawo zokufaka imigodi kusengozini ngaphandle kokwelashwa.

Ukukhetha i-aluminium alloy : 5052 ngaphezu kuka-1050 kunoma yikuphi ukusetshenziswa kwasolwandle noma kwangaphandle. Okuqukethwe kwe-magnesium ku-5052 kunikeza ukumelana nokugqwala okungcono kakhulu emanzini anosawoti, okubalulekile lapho imiphetho yebhodi noma indawo engezansi ithinta khona umswakama kasawoti.

Ukugqoka okuhlelekile : Ngemva kokuhlanganiswa kwe-LED, ukugqoka okuhlelekile (i-acrylic, i-silicone, noma i-polyurethane) kuvikela iminonjana yethusi, amalunga e-solder, kanye nemizimba yezingxenye ekungeneni komswakama. Isisekelo se-aluminium ngokwaso asimboziwe — sisebenza njenge-heatsink futhi kumele sithinte indlu yokubopha. Ukuklama i-PCB yokugqoka okuhlelekile kudinga ukumbozwa kwemaski ye-solder okunwebeka ngokuphelele emaphethelweni ebhodi kanye nokumaka okucacile kwezindawo zokukhipha ukugqoka ezizungeze ama-thermal pads.

Ukuqeda ubuso be-ENIG kuyimpoqo : Amabhodi angaphandle nawasolwandle ahlanganiswe ngezikhathi ezithile zonyaka noma agcinwe ezindaweni zokugcina izinto ezinomswakama awakwazi ukusebenzisa i-OSP (eyonakala ngomswakama) noma i-HASL (eqala ukungcoliswa kobuso zingakapheli izinyanga zokukhiqizwa). Isendlalelo segolide se-ENIG sinikeza ukushintshwa okuthembekile ngokuphila isikhathi eside kweshalofu izinyanga ezingu-12 noma ngabe sigcinwe endaweni enomswakama omningi.

Izinto okufanele uzicabangele ngesilinganiso se-IP : I-PCB akuyona into elinganiswe nge-IP — indlu yokukhanyisa — kodwa ukwakheka kwebhodi le-LED kunquma ukuthi indlu ingafinyelela kalula kangakanani i-IP65 noma i-IP67. Amabhodi anezixhumi kanye nezindawo zokuphuma ngocingo ezindaweni ezingavaliwe aletha ingozi yokungena komswakama ezingeni lokuklama indlu. Ama-PCB e-LED e-aluminium yangaphandle enziwe ngokwezifiso kufanele abuyekezwe ngokumelene nomklamo wophawu lwendlu ekuqaleni kokuthuthukiswa komkhiqizo.

Ukukhanyisa Kwezokwelapha Nokuhlinzwa: Ukuhambisana Kwezinto Eziphilayo Nokuhlanza

Izibani zokuhlinzwa ezingenamthunzi, izindandatho zokukhanyisa ze-endoscope, izibani zokwelapha amazinyo, kanye namaphaneli e-phototherapy kubeka ibhodi le-LED ezindaweni zomtholampilo noma eduze kwazo. Izidingo ezenziwe ngokwezifiso:

Ukuhambisana kwezinto ezibonakalayo : Imaski ye-dielectric kanye ne-solder kumele ingabi nezinto ezivinjelwe ngaphansi kwe-ISO 10993 noma okulinganayo. Amazinga ajwayelekile e-dielectric ethengiswayo angaqukatha izinto ezivimbela ilangabi ezingavinjelwe izinhlelo zokusebenza ze-PCB kodwa ezingahlolwanga ukuhambisana kwezinto eziphilayo. Cela isimemezelo esiphelele sezinto ezibonakalayo efektri sanoma yiliphi ibhodi elingena kudivayisi yezokwelapha.

Ukuhambisana kokuhlanza : Uma indlu yesibani i-autoclaved (umusi, 121°C, imizuzu engama-30), i-aluminium LED PCB kumele iphile imijikelezo yokuhlanza ephindaphindwayo ngaphandle kokukhathala kwamalunga e-solder noma ukususwa kwe-dielectric. Ukuhlolwa kokusinda kwe-Autoclave akuyona into ejwayelekile ekukhiqizweni kwe-PCB — kumele kucaciswe futhi kuhlolwe njengengxenye yokuqinisekiswa kwedivayisi yezokwelapha. I-Highleap Electronics isekela izinhlelo zokufaneleka zokuhlanganiswa kwe-PCB yezokwelapha.

Ukuboniswa kombala nokulawulwa kwe-spectral : Ukukhanya kwezokwelapha kudinga i-Ra ≥ 90 (ukukhanya okuvamile) noma iziqongo ezithile ze-spectral ukuze kubonakale izicubu. Ukukhethwa kwe-LED ngokwezifiso kanye nokuhlanganisa — ukuxuba ama-LED anombala ebhodini elilodwa — kudinga ukwakheka kwephedi ngokwezifiso kanye nokuphathwa kokushisa kohlobo ngalunye lwe-LED kumandla ayo okusebenza.

Ukukhanyisa Kwezimboni Eziphezulu: Ukuhlanganiswa Komklamo Wamanje Ophezulu kanye Nebha Yamabhasi

Izinto zokwakha ze-high-bay zezimboni (150–600W) zicindezela ama-PCB e-aluminium LED emikhawulweni yawo yokuthwala ugesi. Izinhlayiya zethusi ezijwayelekile ze-1 oz azikwazi ukuthwala izintambo ze-10–20 A kulezi zinto ngaphandle kokushisa okungamukeleki.

Umklamo webha yebhasi : Ama-PCB e-LED e-aluminium enziwe ngokwezifiso ezinhlelo zokusebenza ze-high-bay asebenzisa amabha ebhasi ethusi angu-3 oz noma ahlanganisiwe — izingxenye zethusi ezijiyile ezihanjiswa njengemizila yamandla ehlukene nezimpawu zesignali. Umklamo webha yebhasi udinga ukulingisa ukushisa ukuqinisekisa ukuthi ukukhuphuka kwezinga lokushisa okuvela ekushiseni okuvimbelayo kufakiwe kwisabelomali sokushisa se-LED junction.

I-topology yezintambo ze-LED eziningi : Izinto ezinkulu zisebenzisa izintambo ze-LED eziningi ezifanayo zokulinganisela kwamanje kanye nokuphindaphinda. Ukuhlelwa kwe-PCB ngokwezifiso kumele kuqinisekise ubude bezintambo obulinganayo be-voltage ehambelanayo phambili ekushiseni kokusebenza, kanye nokuhlukaniswa phakathi kwezintambo okwanele ukucaciswa kwe-voltage yemodi evamile yomshayeli.

Ukulingisa ukushisa ngaphambi kokuhlelwa : Kuzinhlelo zokusebenza ze-high-bay, ukulingisa ukushisa kwe-MCPCB ngaphambi kokuzibophezela ekuhleleni kukhomba izindawo ezishisayo kusukela ekugxilweni kwamanje kanye nokuhlanganiswa kwe-LED ngaphambi kokuba kwakhiwe ibhodi. Okokufaka ukulingisa kufaka phakathi amandla e-LED kumandla okusebenza, ukumelana nokulandelela okuvela esisindweni sethusi kanye ne-geometry, i-dielectric Tc, kanye nokushisa okuzungezile.

Ukufanisa Ibanga Le-Aluminium kanye ne-Dielectric kuhlelo ngalunye

Imibuzo Evame Ukubuzwa

Yikuphi ukuqhutshwa kokushisa kwe-dielectric engikudingayo ukuze ngithole i-LED engu-10 W? Ku-10 W ngedayi kuphakheji ejwayelekile engu-3535 noma engu-5050, i-dielectric engu-2.0 W/m·K ekujikeni okungu-100 µm ikhiqiza ukumelana kokushisa kwe-dielectric okungaba ngu-0.5–0.8°C/W. Ukwenyuka kwezinga lokushisa le-junction kusuka ku-dielectric kuphela ku-10 W kungu-5–8°C. Ukuze uthole isabelomali sokushisa kwe-junction esiqinile kunalokhu, thuthela ku-3.0 W/m·K.

Ngingayisebenzisa yini idizayini efanayo ye-aluminium LED PCB kokubili izinhlelo zokusebenza zangaphakathi nangaphandle? Akuthembekile. Izinhlelo zokusebenza zangaphandle zidinga i-aluminium alloy engu-5052, ukuqeda kobuso be-ENIG, imaski ye-solder ehambisana ne-conformal-coating, kanye nokwelashwa konqenqema. Imiklamo yangaphakathi esebenzisa i-1050 alloy, ukuqeda kwe-OSP, kanye nokwelashwa konqenqema ngeke kuphumelele ezindaweni zangaphandle.

Ingabe ukwakheka kwe-PCB ye-LED yezimoto kudinga isitifiketi se-AEC-Q200? I-AEC-Q200 isebenza ezingxenyeni ezingasebenzi, hhayi ku-substrate ye-PCB uqobo. Kodwa-ke, amakhasimende ezimoto ngokuvamile adinga i-PCB ukuthi isinde ekujikelezeni kokushisa okufanayo kanye namaphrofayili okudlidliza achazwa yi-AEC-Q200 kuma-passive, aqinisekiswe ngokuhlolwa kwesitifiketi sezinga lesistimu.

Umklamo we-trace wamandla aphezulu uthinta kanjani ukwakheka kwe-PCB ye-LED ye-aluminium eyenziwe ngokwezifiso? Ku-3 oz yethusi, i-trace engu-3 mm ububanzi ithwala cishe u-8-10 A kanye nokuphakama okungu-10°C ngaphezu kwe-ambient. Ku-15-20 A strings, ububanzi be-trace kumele bukhuphuke bube ngu-5-8 mm noma ithusi le-bus bar (>4 oz) kumele lisetshenziswe. Lobu bubanzi buvimbela kakhulu ukubekwa kwe-LED futhi budinga ukucatshangelwa kwasekuqaleni ekwakhiweni kwe-PCB ye-LED eyenziwe ngokwezifiso.