Ibhetri yeLithium-ionugqabhuko-dubulo lubangela:
1. I-polarization enkulu yangaphakathi;
2. Isiqwenga sepali sifunxa amanzi kwaye siphendule ngegubu legesi ye-electrolyte;
3. Umgangatho kunye nokusebenza kwe-electrolyte ngokwayo;
4. Ubungakanani benaliti yolwelo ayihambelani neemfuno zenkqubo;
5. Ukusebenza kakubi kokutywinwa kwe-laser welding kwinkqubo yendibano kunye nokuvuza komoya xa kulinganisa ukuvuza komoya;
6. Uthuli, i-pole piece dust kulula ukukhokelela kwi-micro-short circuit kwindawo yokuqala;
7. Iziqwenga zepali ezintle nezimbi zityebile kunoluhlu lwenkqubo, kwaye kunzima ukungena kwiqokobhe;
8. Ingxaki yokutywinwa kwenaliti yolwelo, ukusebenza kwentsimbi yokutywinwa kwebhola akulunganga kukhokelela kumgqomo wegesi;
9. Ubukhulu bodonga lweqokobhe olungenayo, ukuguqulwa kweqokobhe kuchaphazela ubukhulu;
10. Ngaphandle kobushushu obuphezulu be-ambient ikwangunobangela obalulekileyo wogqabhuko-dubulo.
Amanyathelo okukhusela athathwe yibhetri:
Ibhetri yeLithium-ioniiseli zihlawuliswa kakhulu kumbane ongaphezulu kwe-4.2V kwaye ziya kuqala ukubonisa iziphumo ebezingalindelekanga.Xa iphezulu i-voltage ye-overcharge, iphezulu ingozi.Xa i-voltage yeseli ye-lithium iphezulu kune-4.2V, ngaphantsi kwesiqingatha se-athomu ye-lithium ihlala kwizinto ezintle ze-electrode, kwaye indawo yokugcina igcina iyancipha, ibangele ukuhla okusisigxina kwibhetri.Ukuba ukutshaja kuqhutyekwa, njengoko indawo yokugcina i-electrode engalunganga sele igcwele i-athomu ye-lithium, i-lithium yensimbi elandelayo iya kuqokelela phezu kwendawo yezinto ezimbi ze-electrode.Ezi athom ze-lithium ziya kukhula iikristale ze-dendritic ukusuka kwindawo ye-anode kwicala le-ion ze-lithium.Ezi kristale zetsimbi ze-lithium ziya kudlula kwiphepha le-diaphragm kunye ne-short-circuit i-electrodes efanelekileyo kunye ne-negative.Ngamanye amaxesha ibhetri iqhuma ngaphambi kokuba isiphaluka esifutshane senzeke, oku kungenxa yokuba kwinkqubo yokutshaja ngokugqithiseleyo, i-electrolyte kunye nezinye izinto ziya kuqhekezwa ukuze zivele igesi, okwenza igobolondo yebhetri okanye i-valve yoxinzelelo i-bulge rupture, ukwenzela ukuba i-oksijini iphendule kunye nokuqokelela. yee-athomu ze-lithium kumphezulu we-electrode engalunganga, kwaye emva koko iqhume.
Ngoko ke, xa uhlawulaiibhetri ze-lithium-ion, umlinganiselo wombane ophezulu kufuneka umiselwe ukuze kuthathelwe ingqalelo ubomi, umthamo, kunye nokhuseleko lwebhetri ngaxeshanye.Umda ofanelekileyo ophezulu wokutshaja i-voltage ngu-4.2 V. Kufuneka kwakhona kubekho umda ophantsi wombane xa ukhupha iiseli ze-lithium.Xa i-voltage yeseli iwela ngaphantsi kwe-2.4V, ezinye zezinto ziya kuqala ukutshatyalaliswa.Kwaye ngenxa yokuba ibhetri iya kuzikhupha ngokwayo, ixesha elide ubeka i-voltage ephantsi iya kuba, ngoko ke, kungcono ukuba ungakhupheli kwi-2.4V ngaphambi kokuyeka.Amandla akhutshwe ngexesha le-3.0V ukuya kwi-2.4V kuphela i-akhawunti malunga ne-3% yomthamo webhetri ye-lithium-ion.Ke ngoko, i-3.0V yeyona ndlela ifanelekileyo yokunqunyulwa kwamandla ombane okukhutshwayo.Xa utshaja kwaye ukhupha, ukongeza ekunciphiseni i-voltage, umda wangoku nawo uyimfuneko.Xa i-current iphezulu kakhulu, i-lithium ion ayinayo ixesha lokungena kwindawo yokugcina kwaye iya kuqokelela phezu kwezinto eziphathekayo.
Ezilithium ionzuza ii-electron kunye ne-crystallize i-athomu ye-lithium kumphezulu wezinto eziphathekayo, ezifana nokutshaja ngokugqithiseleyo kwaye kunokuba yingozi.Kwimeko yokugqabhuka kwebhetri, iya kuqhuma.Ngoko ke, ukukhuselwa kweebhetri ze-lithium-ion kufuneka kubandakanye ubuncinane izinto ezintathu: umda ophezulu we-voltage yokutshaja, umda ophantsi wokukhupha i-voltage, kunye nomda ophezulu wangoku.Iipakethi zebhetri ze-lithium-ion ngokubanzi, ngaphezu kweeseli zebhetri ze-lithium-ion, kuya kubakho ipleyiti yokukhusela, le ngqungquthela yokukhusela ibalulekile ukubonelela ezi zithathu zokukhusela.
Ixesha lokuposa: Dec-07-2023