EPE Encapsulant Lamination Delamination: Kumbura Mai Siffar Layi Tare da Ribbon na Solar Cell
Gabatarwa: Menene EPE Encapsulant Film?
EPE encapsulant film, wanda kuma aka sani da co-extruded POE encapsulant, wani abu ne na encapsulation na photovoltaic da ake samarwa ta hanyar co-extruding POE resin da EVA resin. A cikin masana'antar samar da solar module, ana amfani da shi musamman don haɗa sauƙin sarrafawa na EVA tare da aikin hana danshi da anti-PID na POE.
Fim ɗin EVA na al'ada ana amfani da shi sosai a samar da PV module saboda yana ba da kyakkyawan aikin anti-PID, babban haske mai wucewa, juriya ga UV da damp-heat yellowing, juriya ga snail-trail, da kuma mannewa mai ƙarfi ga gilashi da backsheet. Duk da haka, EVA yana da iyakoki, kamar raunin aikin hana danshi, yawan watsa tururin ruwa, da kuma haɗarin PID mafi girma a wasu yanayin aiki.
Fim ɗin POE, idan aka kwatanta, yana da mafi kyawun shingen tururin ruwa, juriya mai ƙarfi ga yanayi, da kuma ingantaccen ikon anti-PID. Amma POE kuma yana da nasa ƙalubalen sarrafawa: mannewarsa ga gilashi da backsheet yawanci ya fi rauni fiye da EVA, halayen crosslinking yana da hankali, kuma a lokacin samar da module fim ɗin na iya zamewa ko motsawa cikin sauƙi, wanda zai iya rage ingancin samarwa.
Wannan shine dalilin da ya sa aka ƙera fim ɗin EPE. Ta hanyar tsarin co-extrusion, POE an rufe shi da yaduddukan EVA, yana samar da tsarin sandwich EVA-POE-EVA. Wannan ƙira tana kiyaye babban shingen danshi na POE, yana taimakawa kare sel ɗin hasken rana daga tururin ruwa, yayin da yake kiyaye kyakkyawar dacewar lamination da sauƙin sarrafawa na EVA. A cikin samarwa na yau da kullun, EPE na iya inganta amincin module da yawan samarwa idan an sarrafa kayan da tsarin lamination da kyau.
Hanyar Fasaha: Me yasa EPE Zai Iya Rarrabe Yayin Lamination
Ko da yake EPE ya haɗu da fa'idodin EVA da POE, kayan biyu ba sa aiki daidai yayin lamination. Hanyoyin warkarwa, halayen haɗin gwiwa, polarity, ikon sha additives, da halayen faɗaɗa zafi sun bambanta. Waɗannan bambance-bambance na iya haifar da rarrabuwar tsaka-tsaki da samuwar kumfa, musamman a wuraren da ke kusa da ribbon solder inda matsi na gida da bambancin kauri suka fi bayyana.
EVA da POE suna da polarity daban-daban. EVA abu ne mai polarity, don haka yana da dacewa mai kyau tare da yawancin additives. POE ba shi da polarity sosai, don haka ikonsa na riƙe additives na polarity ya bambanta. A tsawon lokacin ajiya, additives a cikin Layer POE na iya ƙaura zuwa Layers EVA, waɗanda ke da ƙarfin polarity da ikon sha.
Wannan ƙaurawar ƙari yana canza tsarin ciki da aikin fim ɗin EPE. Sakamakon haka, ƙarfin haɗin gwiwa tsakanin POE da EVA na iya raguwa. A lokuta masu tsanani, POE na iya matsewa, rabuwa, ko rabuwa a wani yanki yayin haɗaɗɗen module. Wannan kuma yana ɗaya daga cikin dalilan da yasa rayuwar ajiyar fim ɗin EPE gabaɗaya ta fi guntu fiye da fim ɗin EVA ɗaya ko POE ɗaya.
| Mahimmin Abubuwa | Hanyar Aiki | Mummunan Aibi a Haɗaɗɗen Module |
|---|---|---|
| Ƙaurawar Ƙari | Ƙari masu iyakacin ruwa kamar masu haɗaɗɗen giciye da masu daidaitawa suna ƙaura daga POE zuwa EVA a tsawon lokaci | Ƙananan matakin haɗaɗɗen giciye na POE, raguwar haɗin kai, rabuwar tsaka-tsakin EPE |
| Rashin daidaiton saurin haɗaɗɗen giciye | EVA yawanci yana haɗaɗɗen giciye da sauri fiye da POE yayin haɗaɗɗen | Layin EVA yana ƙarfafa da wuri yayin da POE ke ci gaba da narkewa, yana haifar da rashin daidaiton damuwa tsakanin layuka |
| Bambancin ma'aunin faɗaɗa zafi | EVA da POE suna nuna bambancin faɗaɗa da raguwa bayan warkewa | Damuwa na ciki yayin sanyaya, yiwuwar rabuwa tsakanin yadudduka |
| Bambancin kauri na gida | Kaurin Layer na POE na iya zama mara daidaito a cikin shugabanci TD, ko EPE ya zama sirara a gida kusa da ribbons da busbars | Rashin manne na gida, tara iskar gas, kumfa masu siffar layi |
| Matsin haɗuwa na ribbon da busbar | Kaurin tari na gida ya fi girma a wuraren siyarwa | Gudun encapsulant, rabuwa na gida, kumfa masu layi suna tashi daga wuraren ribbon |
Binciken Fasaha: Samuwar Kumfa Masu Siffar Layi Tare da Ribbons
Kumfa masu siffar layi da ke fitowa daga ribbons na siyarwa galibi suna da alaƙa da tasirin haɗin ƙaura na ƙari, rashin daidaiton saurin haɗin gwiwa, da kuma bambancin halayen faɗaɗa zafi tsakanin EVA da POE.
Yayin lamination, EVA yana haɗuwa da sauri fiye da POE. Idan Layer na POE bai haɗu a lokaci ba, iskar gas da aka samar yayin bazuwar peroxide na iya rashin fitar da su gaba ɗaya kafin a matsa. Waɗannan iskar gas na iya kasancewa a cikin module kuma su samar da kumfa.
Wani dalili na yau da kullun shine raguwar kauri na fim ɗin EPE a wuraren ribbon da busbar. Tsakiyar Layer POE na EPE na iya samun rashin daidaituwa na kauri a cikin jagorar TD saboda abubuwan albarkatun ƙasa. Bugu da ƙari, yayin lamination, kauri mai ruɓi na ribbons da busbars yana ƙara matsa lamba na gida. Wannan na iya sa EPE ta yi rauni a wannan wuri, yana haifar da wuri mai rauni inda ƙarancin mannewa ko tara gas ya fi yiwuwa.
A taƙaice, yankin ribbon yana samun matsa lamba mafi girma yayin lamination. Idan yadudduka na EVA sun riga sun fara haɗuwa yayin da Layer POE kusa da ribbon har yanzu yana cikin yanayin gudana, tsarin EPE na iya rabuwa a gida. Raguwar encapsulant a wurin ribbon na iya yin hali kamar POE, tare da jinkirin haɗuwa da yawan kwarara. A ƙarƙashin matsa lamba na lamination, wannan na iya haifar da kumfa masu launi ko bayyanannu masu siffar layi suna yaduwa daga ribbon.
Mahimman alamomin tsari don kallo
Kumfa suna bayyana musamman a hanyoyin solder ribbon maimakon bazuwar a duk faɗin module.
Lalacewar na iya zama kamar siraran layin iska masu shimfiɗa daga yankin ribbon ko busbar.
Matsalar na iya ƙara bayyana idan an adana fim ɗin EPE na dogon lokaci.
Lalacewar na iya karuwa idan zafin lamination, lokacin vacuum, lokacin matsa lamba, ko matakin curing ba su dace da takamaiman tsarin EPE ba.
Shawarwari Masu Amfani don Magance Lalacewar Lamination na EPE
Don kumfa da ke haifar da halayen kayan EPE, mafita ya kamata ya haɗa da sarrafa kayan aiki da inganta tsarin lamination. Bai isa ba don daidaita siga ɗaya kawai ba tare da bincika yanayin ajiyar fim, lamination curve, da rarraba matsa lamba na yankin ribbon ba.
1. Sarrafa lokacin ajiyar kayan EPE
Shirya siyan kayan EPE da amfani da samarwa a hankali. A ƙarƙashin yanayin da ba a shafi samarwa ba, rage lokacin ajiyar fim ɗin EPE gwargwadon yiwuwa. Gajeren lokacin ajiya yana taimakawa rage ƙaurawar additives daga Layer POE zuwa Layers EVA, yana kiyaye haɗin interlayer na asali da halayen crosslinking mafi karko.
2. Ɗaga zafin lamination na ɗakin farko daidai
Ƙaruwa mai dacewa a zafin farko na lamination na ɗaki na farko na iya hanzarta haɗin POE a cikin fim ɗin EPE. Wannan yana taimakawa guje wa yanayin da EVA ta riga ta kai matsayi mai girma na haɗin yayin da POE ke ci gaba da narkewa. Kyakkyawan daidaitawa tsakanin maganin EVA da POE na iya rage damuwa tsakanin yadudduka kuma taimaka hana kumfa masu layi kusa da wuraren ribbon.
3. Daidaita vacuum, matsa lamba, da lokacin warkarwa
Idan an yi matsa lamba da wuri yayin da Layer POE ke da ruwa sosai, gas na iya kama ko tura shi tare da wuraren ribbon. Tsarin lamination da aka tsara da kyau ya kamata ya ba da isasshen lokaci don fitar da iska da taushi kayan kafin a yi cikakken matsa lamba. Ya kamata a tabbatar da ainihin saitin ta hanyar gwaje-gwajen matakin haɗin gwiwa, gwaje-gwajen ƙarfin peel, da duba bayyanar bayan lamination.
4. Duba tsayin ribbon da busbar
Saboda matsa lamba na gida ya fi girma a kusa da ribbons da busbars, kauri mai yawa na tari na iya sa EPE ta zama sirara a waɗannan wuraren. Ƙungiyoyin samarwa yakamata su duba daidaiton soldering, daidaiton ribbon, haɗin busbar, da daidaiton layup. Rage bambancin tsayin gida na iya rage haɗarin lalacewar encapsulant na gida da samuwar kumfa.
5. Tabbatar da ingancin EPE mai shigowa
Don fim ɗin EPE, binciken shigowa bai kamata ya duba kawai bayyanar da kauri ba, amma kuma ya mai da hankali kan daidaiton kauri, tsawon rayuwa, yanayin ajiya, halayen gel content, da aikin adhesion. Idan zai yiwu, ya kamata a yi gwajin lamination kafin samarwa da yawa yayin canza masu samarwa, batches, ko tsarin module.
Wannan blog ɗin ya dogara ne akan binciken rashin daidaituwa na aiki a cikin samar da module na PV da kuma nassoshi masu zuwa:
Kwarewar filin daga binciken lahani mara kyau yayin samar da module na photovoltaic
Dow Chemical, Zhang Wenxin, "POE Yana Ba da Module na Photovoltaic Mai Girma"
Southwest Securities, "N-Type Iteration, Masana'antar POE Ta Bude Zagayen Girma Mai Girma"
Samar da Sinadarai da Fasaha, "Bincike kan Halayen Crosslinking na Fim ɗin Polyolefin Encapsulant don Photovoltaics"
Ra'ayin Ooitech
A matsayin mai samar da kayan aiki, muna ganin haka: kumfa na layin ribbon da ke da alaƙa da EPE ba kawai batun kayan aiki ba ne, har ma da batun taga tsari wanda ya dogara da yanayin zafin lamination, ingancin vacuum, lokacin matsa lamba, da kuma daidaiton shimfidawa. Ga masu kera na'urori masu amfani da fasahar sel na ci gaba da manyan nau'ikan, juriyar kwararar encapsulant da tsayin tari na gida ya zama ƙarami sosai, don haka sarrafa rayuwar kayan aiki da tabbatar da girke-girke na lamination ya kamata a ɗauke su a matsayin wani ɓangare na tsarin inganci ɗaya. Layin samar da hasken rana mai ƙarfi yana buƙatar zaɓin encapsulant mai kyau da kuma tabbatar da tsari mai ladabi kafin samarwa da yawa.
