1. Ingozi yebhethri ye-lithium ion
Ibhethri le-lithium ion liwumthombo wamandla wamakhemikhali ongaba yingozi ngenxa yezici zawo zamakhemikhali nokwakheka kwesistimu.
(1) Umsebenzi wamakhemikhali ophezulu
I-Lithium iyisici esiyinhloko seqembu I esigabeni sesibili sethebula le-periodic, enezici zamakhemikhali ezisebenza kakhulu.
(2) Ukuminyana kwamandla aphezulu
Amabhethri e-lithium ion anamandla athile aphezulu kakhulu (≥ 140 Wh/kg), okuyizikhathi ezimbalwa kunawe-nickel cadmium, i-nickel hydrogen namanye amabhethri esibili.Uma kwenzeka ukusabela kokushisa okushisayo, ukushisa okuphezulu kuzokhishwa, okuzoholela kalula ekuziphatheni okungaphephile.
(3) Yamukela isistimu ye-electrolyte ephilayo
I-solvent ye-organic ye-organic electrolyte system i-hydrocarbon, ene-voltage ephansi yokubola, i-oxidation elula kanye ne-solvent evuthayo;Uma kuvuza, ibhethri lizovutha, lishise futhi liqhume.
(4) Amathuba aphezulu okuba nemiphumela engemihle
Enqubweni evamile yokusebenzisa ibhethri ye-lithium ion, ukusabela okuhle kwamakhemikhali kokuguqulwa okuhlangene phakathi kwamandla kagesi namandla amakhemikhali kwenzeka ngaphakathi kwayo.Kodwa-ke, ngaphansi kwezimo ezithile, njengokushaja ngokweqile, ukushajwa kakhulu noma ukusebenza kwamanje, kulula ukubangela ukusabela okuseceleni kwamakhemikhali ngaphakathi kwebhethri;Uma ukusabela okuseceleni kuba kubi, kuzothinta kakhulu ukusebenza nempilo yesevisi yebhethri, futhi kungase kukhiqize inani elikhulu legesi, elizodala ukuqhuma nomlilo ngemva kokuba umfutho ongaphakathi kwebhethri ukhuphuka ngokushesha, okuholela ezinkingeni zokuphepha.
(5) Isakhiwo se-electrode material asizinzile
Ukusabela kwe-overcharge yebhethri ye-lithium ion kuzoshintsha ukwakheka kwezinto ze-cathode futhi kwenze izinto zibe nomphumela oqinile we-oxidation, ukuze i-solvent ku-electrolyte ibe ne-oxidation eqinile;Futhi lo mphumela awunakuhlehliswa.Uma ukushisa okubangelwa ukusabela kunqwabelana, kuzoba nengozi yokubangela ukubaleka okushisayo.
2. Ukuhlaziywa kwezinkinga zokuphepha kwemikhiqizo yebhethri ye-lithium ion
Ngemva kweminyaka engu-30 yokuthuthukiswa kwezimboni, imikhiqizo yebhethri ye-lithium-ion yenze inqubekelaphambili enkulu kwezobuchwepheshe bokuphepha, yalawula ngokuphumelelayo ukuvela kokusabela ohlangothini ebhethri, futhi yaqinisekisa ukuphepha kwebhethri.Kodwa-ke, njengoba amabhethri e-lithium ion esetshenziswa kakhulu futhi kabanzi futhi ukuminyana kwawo kwamandla kuphezulu nangaphezulu, kusenezigameko eziningi ezifana nokulimala kokuqhuma noma ukukhunjulwa komkhiqizo ngenxa yezingozi zokuphepha ezingase zibe khona eminyakeni yamuva.Siphetha ngokuthi izizathu eziyinhloko zezinkinga zokuphepha zemikhiqizo yebhethri ye-lithium-ion zimi kanje:
(1) Inkinga yezinto ezibonakalayo
Izinto ezisetshenziselwa ingqikithi kagesi zifaka izinto ezisebenzayo ezisebenzayo, izinto ezisebenzayo ezingezinhle, ama-diaphragm, ama-electrolyte namagobolondo, njll. Ukukhethwa kwezinto kanye nokumataniswa kwesistimu yokuqamba kunquma ukusebenza kokuphepha kwengqikithi kagesi.Lapho ekhetha izinto ezisebenzayo ezinhle nezimbi kanye nezinto ezisetshenziswayo ze-diaphragm, umenzi akazange enze ukuhlolwa okuthile ezicini nasekufanisweni kwezinto zokusetshenziswa, okuholela ekuntuleni kokuzalwa ekuphepheni kweseli.
(2) Izinkinga zenqubo yokukhiqiza
Izinto zokusetshenziswa zeseli azihlolisiswa ngokuqinile, futhi indawo yokukhiqiza impofu, okuholela ekungcoleni ekukhiqizeni, okungeyona nje ingozi kumthamo webhethri, kodwa futhi kunomthelela omkhulu ekuphepheni kwebhethri;Ngaphezu kwalokho, uma amanzi amaningi exubene ku-electrolyte, ukusabela ohlangothini kungase kwenzeke futhi kwandise ukucindezela kwangaphakathi kwebhethri, okuzothinta ukuphepha;Ngenxa yomkhawulo wezinga lenqubo yokukhiqiza, ngesikhathi sokukhiqizwa kwengqikithi kagesi, umkhiqizo awukwazi ukuzuza ukuvumelana okuhle, njengokungafinyeleli kahle kwe-electrode matrix, ukuwa kwezinto ezisebenzayo zama-electrode, ukuxutshwa kokunye ukungcola. izinto ezisebenzayo, ukushisela okungavikelekile kwe-electrode lug, izinga lokushisa lokushisela elingazinzile, ama-burrs onqenqemeni lwesiqephu se-electrode, kanye nokungabikho kokusetshenziswa kwe-tape yokuvikela ezingxenyeni ezibalulekile, okungase kuthinte kabi ukuphepha kwenkango kagesi. .
(3) Ukonakala kwedizayini yenkambo kagesi kunciphisa ukusebenza kokuphepha
Mayelana nomklamo wesakhiwo, amaphuzu amaningi abalulekile anomthelela kwezokuphepha awazange anakwe ngumenzi.Isibonelo, ayikho i-tape yokuvikela ezingxenyeni ezibalulekile, ayikho imajini noma imajini enganele esele ekwakhiweni kwe-diaphragm, ukwakheka kwenani lesilinganiso sama-electrode aqondile noma angalungile awanangqondo, ukwakheka kwesilinganiso sendawo sokusebenza okuhle nokubi. Izinto azinangqondo, futhi ukwakheka kobude be-lug akunangqondo, okungabeka izingozi ezifihliwe ekuphepheni kwebhethri.Ngaphezu kwalokho, ekukhiqizeni iseli, abanye abakhiqizi bamaseli bazama ukonga nokucindezela izinto ezingavuthiwe ukuze bonge izindleko futhi bathuthukise ukusebenza kahle, njengokunciphisa indawo ye-diaphragm, ukunciphisa ucwecwe lwethusi, ucwecwe lwe-aluminium, nokungasebenzisi i-diaphragm. i-valve yokusiza ingcindezi noma i-insulating tape, ezonciphisa ukuphepha kwebhethri.
(4) Ukuminyana kwamandla okuphezulu kakhulu
Njengamanje, imakethe iphishekela imikhiqizo yebhethri enamandla aphezulu.Ukuze kwandiswe ukuncintisana kwemikhiqizo, abakhiqizi bayaqhubeka nokuthuthukisa umthamo othize wamandla amabhethri e-lithium ion, okwandisa kakhulu ingozi yamabhethri.
Isikhathi sokuthumela: Nov-06-2022