Chidziwitso

Mwachidule chaukadaulo wa Topcon photovoltaic module ndi maubwino

TOPCon (Tunnel Oxide Passivated Contact) ukadaulo wa module wa photovoltaic (PV) umayimira kupita patsogolo kwaposachedwa kwambiri pamakampani a solar pakuwongolera magwiridwe antchito a cell komanso kuchepetsa ndalama. Pakatikati paukadaulo wa TOPCon wagona mu mawonekedwe ake apadera olumikizirana, omwe amachepetsa kuphatikizikanso kwa chonyamulira pama cell, potero kumathandizira kusinthika kwa cell.

Mfundo Zaumisiri

1. Passivation Contact Mapangidwe: Maselo a TOPCon amakonzekera wosanjikiza wocheperako kwambiri wa oxide silicon (1-2nm) kumbuyo kwa chowotcha cha silicon, ndikutsatiridwa ndi kuyika kwa wosanjikiza wa silicon wopangidwa ndi polycrystalline. Kapangidwe kameneka sikumangopereka mawonekedwe owoneka bwino komanso kumapanga njira yonyamulira yosankha, kulola zonyamulira zambiri (ma elekitironi) kudutsa ndikuletsa zonyamulira zazing'ono (mabowo) kuti zisagwirizanenso, motero zimawonjezera mphamvu yamagetsi yotseguka ya cell (Voc) ndikudzaza. chinthu (FF).

2. Kutembenuka Kwambiri Mwachangu: Kuthekera kwakukulu kwaukadaulo kwa ma cell a TOPCon ndi okwera kwambiri mpaka 28.7%, apamwamba kwambiri kuposa 24.5% yama cell amtundu wa P-mtundu wa PERC. Muzochita zogwira ntchito, kupanga mphamvu kwa maselo a TOPCon kwadutsa 25%, ndi kuthekera kopitilira patsogolo.

3. Kuwonongeka kwa Low Light-Induced Degradation (LID): Zophika za silicon zamtundu wa N zili ndi kuwonongeka kocheperako komwe kumapangidwa ndi kuwala, kutanthauza kuti ma module a TOPCon amatha kukhalabe ndi magwiridwe antchito apamwamba pakugwiritsa ntchito kwenikweni, kuchepetsa kutayika kwa magwiridwe antchito pakapita nthawi.

4. Optimized Temperature Coefficient: Kutentha kwa kutentha kwa ma modules a TOPCon ndi abwino kuposa ma modules a PERC, zomwe zikutanthauza kuti m'madera otentha kwambiri, kutaya mphamvu kwa ma modules a TOPCon ndi ochepa, makamaka m'madera otentha ndi m'chipululu kumene ubwino umenewu ukuwonekera makamaka.

5. ngakhale: Ukadaulo wa TOPCon ukhoza kukhala wogwirizana ndi mizere yopangira PERC yomwe ilipo, yomwe imafunikira zida zingapo zowonjezera, monga kufalikira kwa boron ndi zida zoyika mafilimu opyapyala, popanda kufunikira kwa kutsegulira kumbuyo ndi kuyanjanitsa, kufewetsa njira yopangira.

Ntchito Yopanga

Kapangidwe ka maselo a TOPCon makamaka kumaphatikizapo izi:

1. Kukonzekera kwa Silicon Wafer: Choyamba, zowotcha za silicon zamtundu wa N zimagwiritsidwa ntchito ngati maziko a cell. Zophika zamtundu wa N zimakhala ndi nthawi yayitali yonyamula anthu ochepa komanso kuyankha kopepuka kofooka.

2. Kuyika kwa Oxide Layer: Chosanjikiza cha silicon choonda kwambiri chimayikidwa kumbuyo kwa silicon wafer. Makulidwe a oxide silicon wosanjikiza uyu nthawi zambiri amakhala pakati pa 1-2nm ndipo ndiye chinsinsi chothandizira kukhudzana ndi passivation.

3. Doped Polycrystalline Silicon Deposition: Doped polycrystalline silikoni wosanjikiza waikidwa pa oxide wosanjikiza. Wosanjikiza wa silicon wa polycrystalline atha kupezedwa kudzera muukadaulo wocheperako wa chemical vapor deposition (LPCVD) kapena ukadaulo wa plasma-enhanced chemical vapor deposition (PECVD).

4. Chithandizo cha Annealing: Kutentha kwapamwamba kwa annealing kumagwiritsidwa ntchito kusintha crystallinity ya polycrystalline silicon wosanjikiza, potero kuyambitsa ntchito yodutsa. Sitepe iyi ndi yofunika kwambiri kuti mukwaniritse mawonekedwe ocheperako komanso kuti ma cell azigwira bwino ntchito.

5. Kuyika zitsulo: Mizere yazitsulo yazitsulo ndi malo olumikizirana amapangidwa kutsogolo ndi kumbuyo kwa selo kuti atole zonyamula zithunzi. Njira yopangira zitsulo zama cell a TOPCon imafunikira chidwi chapadera kuti tipewe kuwononga mawonekedwe olumikizana nawo.

6. Kuyesa ndi Kusanja: Pambuyo popanga ma cell, kuyezetsa magwiridwe antchito amagetsi kumachitidwa kuti zitsimikizire kuti maselo amakwaniritsa zomwe zidakonzedweratu. Maselo amasanjidwa molingana ndi magawo a magwiridwe antchito kuti akwaniritse zosowa zamisika yosiyanasiyana.

7. Msonkhano wa module: Maselo amasonkhanitsidwa kukhala ma modules, omwe nthawi zambiri amaikidwa ndi zinthu monga galasi, EVA (ethylene-vinyl acetate copolymer), ndi backsheet kuteteza maselo ndi kupereka chithandizo chapangidwe.

Ubwino ndi Zovuta

Ubwino waukadaulo wa TOPCon umakhala pakuchita bwino kwambiri, LID yotsika, komanso kutentha kwabwino, zonse zomwe zimapangitsa kuti ma module a TOPCon agwire bwino ntchito komanso kukhala ndi moyo wautali pamapulogalamu enieni. Komabe, ukadaulo wa TOPCon umakumananso ndi zovuta zamitengo, makamaka potengera kuyika kwa zida zoyambira komanso mtengo wopanga. Ndi kupita patsogolo kwaukadaulo kosalekeza komanso kuchepetsa mtengo, zikuyembekezeka kuti mtengo wa ma cell a TOPCon utsika pang'onopang'ono, ndikupititsa patsogolo mpikisano wawo pamsika wa photovoltaic.

Mwachidule, teknoloji ya TOPCon ndi njira yofunikira pa chitukuko cha mafakitale a photovoltaic. Imawongolera kusinthika kwa ma cell a dzuwa kudzera muukadaulo waukadaulo ndikusunga kugwirizana ndi mizere yopangira yomwe ilipo, kupereka chithandizo champhamvu chaukadaulo pakupititsa patsogolo chitukuko chamakampani a photovoltaic. Ndikupita patsogolo kwaukadaulo ndikuchepetsa mtengo, TOPCon ma module a photovoltaic akuyembekezeka kulamulira msika wa photovoltaic mtsogolomo.