Kusungirako mphamvulithiamu iron phosphate mabatireamagwiritsidwa ntchito kwambiri posungira mphamvu, koma palibe mabatire ambiri omwe angapangitse kuti azigwira ntchito mokhazikika kwa nthawi yayitali.Moyo weniweni wa batri ya lithiamu-ion umakhudzidwa ndi zinthu zosiyanasiyana, kuphatikizapo maonekedwe a thupi la selo, kutentha kozungulira, kugwiritsa ntchito njira ndi zina zotero.Pakati pawo, mawonekedwe amtundu wa selo amakhudza kwambiri moyo weniweni wa mabatire a lithiamu-ion.Ngati mawonekedwe amtundu wa selo sakugwirizana ndi momwe zinthu zilili kapena ngati batri ili ndi mavuto ena panthawi yogwiritsira ntchito, idzakhudza moyo wake weniweni ndi ntchito yeniyeni.
1. Kuchulukitsa
Pansi ntchito yachibadwa, chiwerengero cha kulipiritsa mkombero walithiamu iron phosphate batirekuyenera kukhala nthawi 8-12, apo ayi zingayambitse kuchulukitsidwa.Kuchulukirachulukira kumapangitsa kuti zinthu zomwe zimagwira ntchito za cell zidyedwe pakutulutsa ndikulephera.Moyo wautumiki umachepa pamene mphamvu ya batri imachepa pang'onopang'ono.Panthawi imodzimodziyo, kuya kwapamwamba kwambiri kudzatsogolera kuwonjezereka kwa polarization, kuonjezera kuchuluka kwa kuwonongeka kwa batri ndikufupikitsa moyo wa batri;Kuchulukirachulukira kudzapangitsa kuwonongeka kwa electrolyte ndikuwonjezera kuwonongeka kwa mkati mwa electrochemical system ya batri.Choncho, kuya kwa kulipiritsa kuyenera kuyang'aniridwa panthawi yomwe batire imagwiritsa ntchito kuti isapitirire.
2. Selo ya batri yawonongeka
Lithium iron phosphate batiremu ntchito yeniyeni idzakhudzidwanso ndi chilengedwe chakunja.Mwachitsanzo, chifukwa cha mphamvu kapena zinthu zaumunthu, monga kufupikitsa kapena kuwonongeka kwa mphamvu mkati mwapakati;pachimake pa kulipiritsa ndi kutulutsa ndondomeko ndi voteji kunja, kutentha, chifukwa mkati dongosolo kuwonongeka, kukokoloka kwa zinthu mkati, etc.M`kati ntchito batire kumaliseche mphamvu kuvunda chodabwitsa ayenera mlandu m'nthawi yake, pamene choletsedwa kuti deflate adzapereke ayenera kumasulidwa choyamba pambuyo mlandu;cell ikuyitanitsa ndi kutulutsa zolakwika ziyenera kusiya kulipiritsa kapena kusintha selo munthawi yake nthawi yayitali popanda kugwiritsa ntchito kapena kuyitanitsa mwachangu kumapangitsa kuti mkati mwa batire kuwonongeke ndikuwonongeka kwamadzi.Komanso, muyenera kulabadira khalidwe la batire maselo ndi nkhani chitetezo ndi zinthu zina pa moyo batire ndi ntchito.
3. Moyo wa batri wosakwanira
Kutentha kochepa kwa monomer kumayambitsa moyo waufupi wa cell, makamaka, monomer pakugwiritsa ntchito kutentha kwa ndondomeko sikungathe kutsika kuposa 100 ℃, ngati kutentha kuli kochepa kuposa 100 ℃ kudzatsogolera kutengera ma elekitironi mkati mwa cell kuchokera ku cathode kupita ku anode, zomwe zimapangitsa kuti ma elekitironi a batire sangathe kulipidwa bwino, zomwe zimapangitsa kuwonongeka kwa cell, zomwe zimapangitsa kulephera kwa batri (kuchepetsa mphamvu yamagetsi).Kusintha magawo structural wa monoma adzachititsanso kukana mkati, kusintha voliyumu ndi kusintha voteji, etc. bwanji batire mkombero moyo, ambiri a lithiamu chitsulo mankwala mabatire panopa ntchito m'munda wa yosungirako mphamvu ndi batire pulayimale, sekondale batire. kapena machitidwe atatu a batri omwe amagwiritsidwa ntchito palimodzi.Moyo wa batire yachiwiri ndi waufupi komanso nthawi yozungulira yocheperako (nthawi zambiri 1 mpaka 2) pambuyo pakufunika kusintha, zomwe zimawonjezera mtengo wa batri womwe umagwiritsidwa ntchito komanso zovuta zakuyipitsidwa kwachiwiri (kutsika kutentha mkati mwa cell kumatulutsa mphamvu zambiri ndikupanga kutsika kwa batire) mwayi;atatu mu batire imodzi moyo moyo wautali ndi kuzungulira nthawi zambiri (mpaka makumi masauzande nthawi) pambuyo phindu mtengo (poyerekeza ndi ternary lithiamu mabatire) (ndi mkulu kachulukidwe mphamvu).Moyo wamfupi wautumiki ndi maulendo ocheperapo pakati pa selo limodzi lidzakhala ndi kutsika kwakukulu kwa mphamvu (izi ndichifukwa cha kukana kwamkati kwa selo limodzi) kubweretsa kukana kwakukulu kwa mkati mwa batri;moyo wautali wautumiki ndi maulendo ochulukirapo pakati pa selo imodzi idzapangitsa kukana kwakukulu kwa mkati mwa batri ndikuchepetsa mphamvu zake (izi ndichifukwa chafupikitsa mkati mwa batri) kuchititsa kutsika kwa mphamvu.
4. Kutentha kozungulira kumakhala kokwera kwambiri komanso kotsika kwambiri, kudzakhudzanso moyo wa batri.
Mabatire a lithiamu-ion alibe mphamvu pa ma conductivity a ma ion a lithiamu mu kutentha kwa ntchito, koma kutentha kozungulira kumakhala kokwera kwambiri kapena kotsika kwambiri, kachulukidwe kawo pamadzi a lithiamu amachepetsa.Pamene kachulukidwe kachulukidwe kake kakuchepa, zimabweretsa ma lithiamu ma ion mu electrode yoyipa pamwamba pa deembedding ndi kutulutsa.Kutalikirapo nthawi yotulutsa, m'pamenenso batire idzachulukitsidwa kapena kutha.Chifukwa chake, batire iyenera kukhala ndi malo abwino osungira komanso zinthu zoyendetsera bwino.Nthawi zambiri, kutentha kozungulira kuyenera kuyendetsedwa pakati pa 25 ℃ ~ 35 ℃ kusadutsa 35 ℃;Kuthamanga kwapano kuyenera kukhala kosachepera 10 A/V;osapitirira maola 20;mtengo uliwonse uyenera kutulutsidwa nthawi 5-10;mphamvu yotsalira sayenera kupitirira 20% ya mphamvu zovotera pambuyo pa ntchito;osasunga kutentha pansi pa 5 ℃ kwa nthawi yayitali mutatha kulipira;seti ya batri siyenera kufupikitsidwa kapena kutenthedwa panthawi yothamangitsa ndi kutulutsa Battery paketi siyenera kukhala yofupikitsa kapena kuwotchedwa pakuyitanitsa ndi kutulutsa.
5. Kusagwira bwino ntchito kwa batri kumapangitsa kuti moyo ukhale wotsika komanso kugwiritsa ntchito mphamvu zochepa mkati mwa cell ya batri.
Posankha zinthu za cathode, kusiyana kwa ntchito ya cathode kumapangitsa kuti batire igwiritsidwe ntchito mosiyanasiyana.Nthawi zambiri, moyo wautali wa batri, kuchuluka kwa mphamvu za cathode komanso kuchuluka kwa mphamvu ya monomer, kumapangitsanso mphamvu yogwiritsira ntchito mphamvu mkati mwa batire.Komabe, ndi kusintha kwa electrolyte, zowonjezera zowonjezera zimawonjezeka, ndi zina zotero, kachulukidwe ka mphamvu ndipamwamba ndipo kachulukidwe ka mphamvu ya monomer ndi yotsika, zomwe zidzakhudza ntchito ya batri ya cathode.The apamwamba zili faifi tambala ndi cobalt zinthu mu cathode chuma, ndi apamwamba kuthekera kupanga oxides zambiri mu cathode;pamene kuthekera kwa kupanga oxides mu cathode ndi kochepa.Chifukwa cha chodabwitsa ichi, zinthu cathode ali mkulu kukana mkati ndi mofulumira voliyumu kukulitsa mlingo, etc.
Nthawi yotumiza: Nov-08-2022