Gabatarwar Samfur

Fasahar tantanin BC ba samfurin tantanin halitta guda ɗaya ba ce. Fasaha ce ta dandamali. Ka yi la'akari da ita a matsayin falsafar ƙirar tsarin tantanin halitta gabaɗaya, gine-ginen da zai iya haɗuwa da haɗawa da fasahohin sadarwa na siliki da yawa. Daga wannan, hanyoyin tantanin halitta masu inganci daban-daban suna fitowa.

Ƙa'idar Jiki: Inganta Tsari, Ba Juyin Kayan Aiki Ba

BC na nufin Back Contact. Babban sabon abu shine a cikin tsarin. Ba kamar tantanin rana na al'ada ba, tantanin BC yana sanya dukkan na'urorin lantarki na grid a bayan tantanin, don haka gaban ba shi da layin grid da ke inuwa.

Wannan zane yana kawo manyan fa'idodi biyu:

• Ingantacciyar ingantaccen canji: babu inuwa a gaba yana nufin cewa photons masu shigowa ana amfani da su sosai, wanda ke ɗaga gajeren kewayawa kuma yana ba da ingantaccen canji na photoelectric. Misali, tantanin HBC da aka gina akan wannan hanya ya kafa rikodin duniya na 27.81% don tantanin siliki crystalline guda ɗaya.

• Kyakkyawan kyan gani: gaban tantanin yana nuna farar fata mai duhu, baƙar fata. Yana da tsabta, wanda ya dace da yanayin da ake buƙatar kyakkyawan kyan gani kamar ginin-hada photovoltaics (BIPV).

Iyalin Fasaha: BC Ya Haɗu da Sauran Hanyoyi

A matsayin fasahar dandamali, BC ba keɓantacce ba. Yana iya haɗuwa da PERC, TOPCon, HJT da sauransu, yana samar da babban iyalin XBC. Waɗannan hanyoyin da aka samo suna gaji da inganci da kyakkyawan kyan gani na tsarin BC yayin da suke ɗaukar halayen kowace fasaha ta tushe.

• IBC (Interdigitated Back Contact): mafi tsabta, mafi asali nau'in fasahar BC.

• TBC (Tunnel oxide passivated contact Back Contact): BC hade da fasahar TOPCon (tunnel oxide passivated contact).

• HBC (Hetero Junction Back Contact): BC hade da HJT (heterojunction). A halin yanzu ita ce ke riƙe rikodin inganci.

• HPBC (Hybrid Passivated Back Contact): fasahar tantanin baya mai haɗaɗɗiyar kariya da LONGi ta ƙaddamar.

• ABC (All Back Contact): fasahar tantanin baya gaba ɗaya da Aiko Solar ta ƙaddamar.

Aikace-aikacen Samfur

Kwayoyin BC suna nuna fa'idodi a bayyane a inganci da kamanni, amma hanyar samarwa da yawa tana da ƙalubale na gaske.

• Tsari mai rikitarwa, farashi mafi girma: bayan kwayar BC yana buƙatar yankuna P da N masu canzawa, wanda ke nufin tsarin laser mai madaidaici, rufewa da sauran matakai masu rikitarwa. Bukatun daidaiton kayan aiki da yawan amfanin suna da yawa sosai. Don haka saka hannun jari na farko na kayan aiki da farashin masana'anta suna sama da manyan PERC da TOPCon.

• Hanyar rage farashi a bayyane: yayin da fasaha ke maimaitawa, masana'antar tana rage farashi ta hanyar amfani da zanen laser maimakon hoton hoto na gargajiya, da kuma inganta ƙarfe mara azurfa kamar lantarkin jan ƙarfe.

• Masana'antu na kara sauri: shugabanni kamar LONGi da Aiko Solar suna matsa lamba sosai kan samar da BC cell a manyan matakai, tare da iyawar da aka tsara ta kai matakin gigawatts goma. Yayin da sarkar samar da kayayyaki ta girma kuma tasirin sikelin ya fara aiki, hanyar BC tana da damar daukar matsayi mafi muhimmanci a kasuwar PV ta gaba bisa ga fifikon ingancinta.

Ra'ayin Ooitech

Abin da ke sa dangin XBC ya zama mai wahala a masana'anta ba cell din kanta ba ne, matakin hada waya ne, tunda back-contact cells suna barin front busbars kuma suna bukatar hadewa ta daban fiye da na'urorin tabber-stringer na yau da kullum. Muna gina stringers masu jituwa da BC wadanda ke sarrafa IBC, TBC, HBC, HPBC da ABC cells akan layi daya, wanda ke da matukar muhimmanci idan masana'anta na son ci gaba da bude zabi yayin da wadannan hanyoyin ke ci gaba da canzawa. Idan kuna son ganin yadda layukan module ke aiki a zahiri, tashar Ooitech YouTube (www.youtube.com/ooitech) tana da daraja a bi don hotunan masana'anta na gaske.