Ukushaja okusheshayo okujwayelekile kokushaja kwe-DC enamandla amakhulu, ingxenye yehora ingagcwaliswa ngamaphesenti angama-80 wamandla, ukushaja okusheshayo kwe-DC yokushaja i-voltage yokushaja ngokuvamile inkulu kune-voltage yebhethri. Ngakho-ke yiziphi izingozi zokushaja okusheshayo kwebhethri ye-lithium mayelana nezinkinga zobuchwepheshe zokushaja okusheshayo kwebhethri ye-lithium?
Yiziphi izingozi ezihlobene nokushaja okusheshayo kwamabhethri e-lithium?
Izindlela ezintathu eziyisisekelo zokubona ukushaja okusheshayo yilezi: gcina i-voltage ingaguquki futhi wandise yamanje; gcina i-current njalo futhi ukhulise i-voltage; futhi wandise i-current kanye ne-voltage ngesikhathi esifanayo. Kodwa-ke, ukuze ubone ukushaja okusheshayo, hhayi nje ukuthuthukisa amandla amanje kanye ne-voltage, ubuchwepheshe bokushaja okusheshayo buyisethi ephelele yezinhlelo, okuhlanganisa i-adaptha yokushaja esheshayo kanye nesistimu yokuphatha amandla ehlakaniphile.
Ukushaja okusheshayo kwesikhathi eside kuthinta impilo yamabhethri e-lithium, ukushaja okusheshayo kwamabhethri e-lithium kuyindleko yempilo yomjikelezo webhethri, ngoba ibhethri iyisisetshenziswa esikhiqiza ugesi ngokusabela kwe-electrochemical, ukushaja ukwenzeka kokusabela kwamakhemikhali okuhlanekezela. , futhi ukushaja okusheshayo kuzoba okokufaka okusheshayo kwamandla aphezulu kubhethri, ukusetshenziswa njalo kwemodi yokushaja ngokushesha kuzonciphisa umthamo wokunciphisa webhethri, kunciphise inani lebhethri. ukushaja nokukhipha imijikelezo.
Ukushaja okusheshayo kwebhethri ye-lithium kuletha imiphumela emithathu: umphumela oshisayo, imvula ye-lithium kanye nomphumela wokusebenza
1. Ukushaja okusheshayo okuvamisile kusheshisa ukuhlukaniswa kweseli yebhethri
Uma ukushaja okuqhubekayo kukhulu, ukugxilwa kwe-ion ku-electrode kuyakhuphuka, i-polarization iyanda, futhi i-voltage yetheminali yebhethri ayikwazi ukuhambisana ngokuqondile nangokuqondile nenani likagesi oshajiwe. Ngasikhathi sinye, ukushaja okuphezulu kwamanje, ukwanda kokumelana kwangaphakathi kuzoholela ekwandeni komphumela wokushisa we-Joule olethwa yimiphumela emibi, njengokubola kwe-electrolyte reaction, ukukhiqizwa kwegesi kanye nochungechunge lwezinkinga, isici sobungozi sanda ngokuzumayo, umthelela. ekuphepheni kwebhethri, impilo yamabhethri angenawo amandla izofushaniswa kakhulu.
2. Ukushaja ngokushesha okuvamisile kungase kuholele ekukhanyeni komgogodla webhethri
Ukushaja ngokushesha kwebhethri ye-lithium kusho ukuthi ama-ion e-lithium akhishwa ngokushesha futhi "abhukude aye" ku-anode, okudinga ukuthi impahla ye-anode ibe nomthamo wokushumeka we-lithium osheshayo, ngenxa yamandla ashumekiwe e-lithium namandla okuna kwe-lithium acishe afane, ekushajweni okusheshayo. noma izimo eziphansi zokushisa, i-lithium ion ingase iqhubekele phezulu ekubunjweni kwe-dendritic lithium. I-Dendritic lithium izobhoboza i-diaphragm futhi ibangele ukulahlekelwa kwesibili, inciphise umthamo webhethri. Lapho ikristalu ye-lithium ifinyelela inani elithile, izokhula isuka ku-electrode engeyinhle iye ku-diaphragm, okubangela ingozi yomjikelezo webhethri.
3. Ukushaja okusheshayo okuvamisile kuzofinyeza impilo yebhethri
Ukushaja njalo kuvame ukusheshisa ukuphela kwempilo yebhethri, futhi kuholele ezinkingeni ezifana nokuncipha komsebenzi webhethri nempilo yebhethri emfushane. Ikakhulukazi ngemva kokwengezwa kobuchwepheshe bokushaja okusheshayo, nakuba ijubane lokushaja ekuqaleni lishesha kakhulu, kodwa alizange likhokhise ku-100% ekukhishweni, okuholela ekushajweni okuningi, ukwandisa inani lemijikelezo yebhethri, isikhathi eside. ukusebenzisa indlela enjalo kuzonciphisa ukusebenza kwebhethri, ngaleyo ndlela kusheshise ukuguga kwebhethri.
Izinga lokushisa eliphakeme lingumbulali omkhulu kakhulu wokuguga kwebhethri ye-lithium, ukushaja okusheshayo kwamandla aphezulu kuzokwenza ibhethri ngesikhathi esifushane ukushisa, ukushaja okungasheshi nakuba amandla ephansi, ukushisa okuphansi ngeyunithi ngayinye yesikhathi, kodwa udinga isikhathi eside samandla. Ngale ndlela ukushisa kwebhethri nakho kuzonqwabelana ngokuhamba kwesikhathi, futhi umehluko ekushiseni okukhiqizwa ngesikhathi sokushajwa akwanele ukuze kubangele umehluko esilinganisweni sokuguga kwebhethri.
Uma sifingqa lokhu okungenhla, singaphetha ngokuthi ukushaja okusheshayo kunezidingo zekhwalithi ephezulu zebhethri, kunokulahlekelwa okukhulu kwempilo yebhethri, futhi isici sokuphepha sizoncishiswa kakhulu, ngakho-ke zama ukukwenza kancane ngangokunokwenzeka lapho kungenasidingo. Ukushajwa okusheshayo kwebhethri njalo kuzodala umonakalo ebhethrini, kodwa ngenxa yomehluko wokuminyana kwamaseli ebhethri, izinto zokwakha, izinga lokushisa elizungezile kanye nohlelo lokuphatha ibhethri, ibhethri lihlushwa amazinga ahlukene okulimala ngesikhathi sokushajwa ngokushesha.
Isikhathi sokuthumela: Oct-26-2023