Tun lokacin da batirin lithium-ion ya shiga kasuwa, an yi amfani da shi sosai saboda fa'idodinsa kamar tsawon rayuwa, babban ƙayyadaddun iya aiki kuma babu tasirin ƙwaƙwalwar ajiya.Yin amfani da ƙananan zafin jiki na batir lithium-ion yana da matsaloli kamar ƙarancin ƙarfi, raguwa mai tsanani, rashin aikin sake zagayowar, bayyanannen juyin halittar lithium, da rashin daidaituwar lithium deintercalation.Koyaya, tare da ci gaba da faɗaɗa wuraren aikace-aikacen, ƙuntatawa da ƙarancin yanayin zafi na batirin lithium-ion ya kawo sun ƙara bayyana.
A cewar rahotanni, ƙarfin fitarwa na batir lithium-ion a -20 ° C shine kawai 31.5% na abin da ke cikin zafin jiki.Yanayin zafin aiki na batura lithium-ion na gargajiya yana tsakanin -20 da +60°C.Koyaya, a fagen sararin samaniya, masana'antar soji, da motocin lantarki, ana buƙatar batir suyi aiki akai-akai a -40 ° C.Don haka, haɓaka ƙarancin zafin batir na lithium-ion yana da mahimmanci.
Abubuwan da ke taƙaita ƙarancin zafin batirin lithium-ion:
1. A cikin ƙananan yanayin zafi, danko na electrolyte yana ƙaruwa, ko ma wani bangare yana ƙarfafawa, yana haifar da raguwa a cikin tafiyar da baturin lithium-ion.
2. Daidaituwa tsakanin electrolyte, mummunan lantarki da diaphragm ya zama matalauta a cikin ƙananan yanayin zafi.
3. A cikin ƙananan yanayin zafi, lithium-ion baturi korau electrodes suna da matuƙar hazo sosai, kuma ƙarfen lithium ɗin da aka haɗe yana amsawa tare da electrolyte, kuma ƙaddamar da samfurin yana haifar da kauri na ƙaƙƙarfan ƙirar lantarki (SEI) don haɓaka.
4. A cikin ƙananan yanayin zafi, tsarin watsawa na baturin lithium ion a cikin kayan aiki yana raguwa, kuma juriya na canja wurin caji (Rct) yana ƙaruwa sosai.
Tattaunawa kan abubuwan da ke shafar ƙarancin zafin batirin lithium-ion:
Ra'ayin masana 1: Electrolyte yana da mafi girman tasiri akan ƙarancin yanayin zafi na batir lithium-ion, kuma abun da ke ciki da na zahiri da sinadarai na electrolyte suna da tasiri mai mahimmanci akan ƙarancin zafin batirin.Matsalolin da ke tattare da sake zagayowar batir a cikin ƙananan zafin jiki sune: dankowar electrolyte zai ƙaru, kuma saurin tafiyar da ion zai ragu, wanda zai haifar da rashin daidaituwa a cikin gudun hijirar lantarki na waje.Saboda haka, baturin zai zama polarized sosai kuma caji da ƙarfin fitarwa zai ragu sosai.Musamman lokacin da ake caji a ƙananan zafin jiki, ions lithium na iya yin sauƙi a samar da lithium dendrites a saman madaidaicin lantarki, yana sa baturi ya gaza.
Ƙarƙashin yanayin zafi na electrolyte yana da alaƙa da haɗin kai na electrolyte kanta.Babban aiki na electrolyte yana jigilar ions da sauri, kuma yana iya yin ƙarin ƙarfi a ƙananan yanayin zafi.Da yawan gishirin lithium a cikin electrolyte ya rabu, mafi girman adadin ƙaura kuma mafi girma da aiki.Mafi girman halayen wutar lantarki, saurin ion conductivity, ƙaramin polarization, kuma mafi kyawun aikin baturi a ƙananan yanayin zafi.Sabili da haka, mafi girman ƙarfin lantarki shine yanayin da ya zama dole don samun kyakkyawan aikin ƙarancin zafin jiki na batir lithium-ion.
Halin da ake amfani da shi na electrolyte yana da alaƙa da abubuwan da ke cikin electrolyte, kuma rage dankowar abubuwan da ake amfani da su yana daya daga cikin hanyoyin inganta halayen lantarki.Kyakkyawan ruwa mai narkewa a cikin ƙananan zafin jiki shine garantin jigilar ion, kuma ƙaƙƙarfan membrane na electrolyte da aka kafa ta hanyar electrolyte a kan mummunan lantarki a ƙananan zafin jiki shine mabuɗin don rinjayar lithium ion conduction, kuma RSEI shine babban tasiri na lithium. ion baturi a cikin ƙananan yanayin zafi.
Ra'ayi na ƙwararru 2: Babban abin da ke iyakance ƙarancin yanayin zafi na batir lithium-ion shine haɓaka juriya na Li + mai ƙarfi a ƙananan yanayin zafi, ba fim ɗin SEI ba.
Don haka, yadda za a bi da batir lithium daidai a cikin hunturu?
1. Kada a yi amfani da baturan lithium a cikin ƙananan yanayin zafi
Zazzabi yana da babban tasiri akan batir lithium.Ƙananan zafin jiki, ƙananan ayyukan batir lithium, wanda kai tsaye yana haifar da raguwa mai yawa a cikin caji da fitarwa.Gabaɗaya magana, zafin aiki na batirin lithium yana tsakanin -20 digiri da -60 digiri.
Lokacin da zafin jiki ya yi ƙasa da 0 ℃, a yi hankali kada ku yi caji a waje, ba za ku iya cajin shi ba ko da kun yi cajin shi, za mu iya ɗaukar baturin mu yi caji a cikin gida (bayanin kula, ku tabbata a nisanta daga kayan da za a iya ƙonewa !!! ), Lokacin da zafin jiki ya yi ƙasa da -20 ℃, baturin zai shiga ta atomatik kuma ba za a iya amfani dashi akai-akai ba.Don haka arewa ta kasance musamman masu amfani a wuraren sanyi.
Idan da gaske babu yanayin caji na cikin gida, ya kamata ka yi cikakken amfani da ragowar zafin lokacin da baturi ya cika, kuma ka yi cajin shi a rana nan da nan bayan filin ajiye motoci don ƙara ƙarfin caji da guje wa juyin lithium.
2. Haɓaka dabi'ar amfani da caji
A cikin hunturu, lokacin da ƙarfin baturi ya yi ƙasa da ƙasa, dole ne mu yi cajin shi cikin lokaci kuma mu haɓaka ɗabi'a mai kyau na caji da zarar an yi amfani da shi.Ka tuna, kar a taɓa ƙididdige ƙarfin baturi a lokacin hunturu dangane da rayuwar baturi na yau da kullun.
Ayyukan baturi na lithium yana raguwa a lokacin hunturu, wanda yake da sauƙi don haifar da zubar da ruwa da yawa, wanda zai shafi rayuwar baturin kuma ya haifar da haɗari mai ƙonewa a cikin mafi munin yanayi.Don haka, a lokacin hunturu, dole ne mu mai da hankali sosai ga caji tare da magudanar ruwa da caji mara zurfi.Musamman ma, ya kamata a nuna cewa ba a ajiye motar na dogon lokaci a hanyar yin caji a kowane lokaci don kauce wa cajin da ya wuce kima.
3. Kada ka nisanci lokacin caji, ka tuna kada kayi caji na dogon lokaci
Kada a bar motar a cikin caji na dogon lokaci don dacewa, kawai cire ta idan ta cika.A cikin hunturu, yanayin caji bai kamata ya zama ƙasa da 0 ℃ ba, kuma lokacin caji, kar a bar nisa sosai don hana aukuwar gaggawa kuma magance shi cikin lokaci.
4. Yi amfani da caja na musamman don batir lithium lokacin caji
Kasuwar ta cika da manyan caja marasa adadi.Yin amfani da ƙananan caja na iya lalata baturin har ma da haifar da wuta.Kada ku yi kwadayin siyan kayayyaki masu arha ba tare da garanti ba, kuma kada ku yi amfani da cajar baturi mai gubar acid;idan cajar ku ba za a iya amfani da ita ta al'ada ba, daina amfani da shi nan da nan, kuma kada ku rasa ganinsa.
5. Kula da rayuwar baturi kuma maye gurbin shi da wani sabo a cikin lokaci
Batirin lithium yana da tsawon rayuwa.Bayanai daban-daban da samfura suna da rayuwar batir daban-daban.Baya ga rashin amfanin yau da kullun, tsawon rayuwar baturi ya bambanta daga watanni da yawa zuwa shekaru uku.Idan motar tana kashe wuta ko kuma tana da ɗan gajeren rayuwar batir, da fatan za a tuntuɓe mu a cikin lokacin da ma'aikatan kula da batirin Lithium suka rike ta.
6. Bar ragi na wutar lantarki don tsira da hunturu
Domin yin amfani da abin hawa kamar yadda aka saba a cikin bazara na shekara mai zuwa, idan ba a yi amfani da baturi na dogon lokaci ba, ku tuna da cajin 50% -80% na baturin, kuma cire shi daga motar don ajiya, kuma a yi cajin shi akai-akai. kamar sau ɗaya a wata.Lura: Dole ne a adana baturin a busasshen wuri.
7. Sanya baturin daidai
Kada a nutsar da baturin cikin ruwa ko sanya baturin ya jike;kar a tara baturin fiye da yadudduka 7, ko juya baturin kife.
Lokacin aikawa: Dec-24-2021