Hnub ci vaj huam sib luag yog ib qho tseem ceeb tshaj plaws nyob rau hauv lub hnub ci zog tsim system.Nws txoj haujlwm yog hloov lub hnub ci zog rau hauv lub zog hluav taws xob, thiab tom qab ntawd tso tawm DC hluav taws xob los khaws cia hauv lub roj teeb.Nws hloov pauv tus nqi thiab kev pabcuam lub neej yog qhov tseem ceeb los txiav txim siab seb lub hnub ci cell puas siv tus nqi.
Lub hnub ci hlwb tau ntim nrog kev ua haujlwm siab (ntau dua 21%) monocrystalline silicon solar cells kom ntseeg tau tias muaj zog txaus tsim los ntawm lub hnub ci vaj huam sib luag.Lub iav yog ua los ntawm cov hlau tsis tshua muaj tempered suede iav (tseem hu ua iav dawb), uas muaj kev xa tawm ntawm ntau dua 91% nyob rau hauv lub wavelength ntau yam ntawm lub hnub ci cell spectral teb, thiab muaj lub siab reflectivity rau lub teeb infrared ntau dua 1200 nm.Nyob rau tib lub sijhawm, lub iav tuaj yeem tiv taus cov hluav taws xob ntawm hnub ci ultraviolet lub teeb yam tsis muaj qhov txo qis.EVA txais yuav EVA zaj duab xis zoo nrog lub thickness ntawm 0.78mm ntxiv nrog cov tshuaj tiv thaiv ultraviolet, antioxidant thiab curing agent ua tus neeg saib xyuas lub hnub ci thiab cov neeg sawv cev sib txuas ntawm iav thiab TPT, uas muaj kev sib kis tau zoo thiab muaj peev xwm tiv thaiv kev laus.
Sab nraub qaum ntawm TPT hnub ci cell - fluoroplastic zaj duab xis yog xim dawb, uas qhia txog lub hnub ci, yog li qhov ua tau zoo ntawm lub module yog me ntsis txhim kho.Vim nws qhov siab infrared emissivity, nws kuj tseem tuaj yeem txo qhov kub thiab txias ua haujlwm ntawm lub module, thiab kuj yog qhov tsim nyog rau kev txhim kho kev ua haujlwm ntawm lub module.Aluminium alloy ncej siv rau lub thav duab muaj lub zog siab thiab muaj zog txhua yam kev cuam tshuam tsis kam.Nws tseem yog qhov tseem ceeb tshaj plaws ntawm lub hnub ci hluav taws xob tsim hluav taws xob.Nws txoj haujlwm yog los hloov lub hnub ci hluav taws xob muaj peev xwm rau hauv lub zog hluav taws xob, lossis xa mus rau lub roj teeb cia rau kev khaws cia, lossis txhawb nqa kev ua haujlwm.
Txoj Cai Ua Haujlwm Ntawm Solar Vaj Huam Sib Luag
Lub hnub ci vaj huam sib luag yog cov khoom siv semiconductor uas tuaj yeem hloov lub teeb hluav taws xob ncaj qha rau hauv hluav taws xob hluav taws xob.Nws cov qauv yooj yim yog tsim los ntawm semiconductor PN kev sib tshuam.Noj cov silicon PN hnub ci cell feem ntau ua piv txwv, kev hloov pauv ntawm lub teeb lub zog rau hauv hluav taws xob hluav taws xob tau tham hauv kev nthuav dav.
Raws li peb txhua tus paub, cov khoom uas muaj ntau qhov kev hloov pauv dawb thiab yooj yim los ua tam sim no hu ua conductors.Feem ntau, hlau yog conductors.Piv txwv li, qhov conductivity ntawm tooj liab yog hais txog 106 / (Ω. cm).Yog tias qhov hluav taws xob ntawm 1V tau siv rau ob qhov chaw sib txuas ntawm 1cm x 1cm x 1cm tooj liab lub voos xwmfab, tam sim no ntawm 106A yuav ntws ntawm ob qhov chaw.Ntawm qhov kawg yog cov khoom uas nyuaj heev rau kev ua tam sim no, hu ua insulators, xws li ceramics, mica, roj, roj hmab, thiab lwm yam. Piv txwv li, cov conductivity ntawm quartz (SiO2) yog li ntawm 10-16 / (Ω. cm) .Lub semiconductor muaj ib tug conductivity ntawm conductor thiab insulator.Nws conductivity yog 10-4 ~ 104 / (Ω. cm).Lub semiconductor tuaj yeem hloov nws cov conductivity nyob rau hauv ntau yam saum toj no los ntawm kev ntxiv me me ntawm impurities.Lub conductivity ntawm txaus ntshiab semiconductor yuav nce sharply nrog qhov kub thiab txias.
Semiconductors tuaj yeem yog cov khoom siv, xws li silicon (Si), germanium (Ge), selenium (Se), thiab lwm yam;Nws tuaj yeem yog cov khoom sib xyaw, xws li cadmium sulfide (Cds), gallium arsenide (GaAs), thiab lwm yam;Nws kuj tuaj yeem yog cov hlau nplaum, xws li Ga, AL1 ~ XAs, qhov twg x yog ib tus lej ntawm 0 thiab 1. Ntau cov khoom hluav taws xob ntawm cov khoom siv hluav taws xob tuaj yeem piav qhia los ntawm cov qauv yooj yim.Tus naj npawb atomic ntawm silicon yog 14, yog li muaj 14 electrons sab nraum lub atomic nucleus.Ntawm lawv, 10 electrons nyob rau hauv lub puab txheej yog nruj nreem khi los ntawm lub atomic nucleus, thaum 4 electrons nyob rau hauv txheej txheej yog tsawg khi los ntawm atomic nucleus.Yog tias tau txais lub zog txaus, nws tuaj yeem raug cais tawm ntawm atomic nucleus thiab dhau los ua cov hluav taws xob dawb, tawm hauv qhov chaw qub nyob rau tib lub sijhawm.Cov hluav taws xob tsis zoo raug them thiab qhov tau txais txiaj ntsig zoo.Plaub electrons nyob rau hauv txheej txheej ntawm silicon nucleus kuj hu ua valence electrons.
Nyob rau hauv silicon siv lead ua, muaj plaub atoms nyob ib ncig ntawm txhua lub atom thiab ob valence electrons nrog rau txhua lub atom uas nyob ib sab, tsim ib tug ruaj khov 8-atom plhaub.Nws siv 1.12eV lub zog los cais cov hluav taws xob los ntawm silicon atom, uas yog hu ua silicon band gap.Cov electrons sib cais yog cov khoom siv hluav taws xob dawb, uas tuaj yeem txav tau yooj yim thiab xa tawm tam sim no.Thaum ib qho hluav taws xob khiav tawm ntawm lub atom, nws tawm ntawm qhov chaw, hu ua lub qhov.Cov hluav taws xob los ntawm cov atoms uas nyob ib sab tuaj yeem sau lub qhov, ua rau lub qhov txav ntawm ib txoj hauj lwm mus rau ib qho tshiab, yog li tsim ib qho tam sim no.Qhov tam sim no generated los ntawm cov ndlwg ntawm electrons yog sib npaug rau cov tam sim no generated thaum lub zoo them qhov txav nyob rau hauv lub opposite kev taw qhia.
Post lub sij hawm: Jun-03-2019