Ukuze uzuze ukushaja okusheshayo, ibhethri, inkampani yenethiwekhi ebaluleke kakhulu enqubweni yokushaja, nayo idinga ukulungiswa.Ukushajwa okusheshayo kwebhethri ikakhulukazi kuncike ekushajweni nasekukhulisweni kokushajwa kwebhethri.Kunezizathu ezintathu eziyinhloko zokuphazamisa ukukhuliswa kokushaja: impahla ye-electrode, amandla okushaja enqwaba yokushaja kanye nezinga lokushisa lebhethri lamandla.Emabhizinisini amabhethri, amandla okushaja ama-piles wokushaja ayisici esihlosiwe, futhi izinto zokwenziwa kwama-electrode nokulawula izinga lokushisa yilapho izimboni zamabhethri zingenza khona izinguquko.
Kusixhumanisi sebhethri lamandla, ikhono lokushaja ngokushesha lebhethri lincike emandleni amaningi afana nekhono lokushumeka i-lithium elisheshayo le-electrode eyinegethivu, ukuqhutshwa kwe-electrolyte, nekhono lokulawula ukushisa kwesistimu yebhethri.
Lapho ishaja ngokushesha, ama-ion e-lithium adinga ukusheshiswa futhi ashumekwe khona manjalo ku-electrode engemihle.Lokhu kubekela inselele ikhono lama-electrode angalungile okuthola ngokushesha i-lithium ion.Uma i-electrode engeyinhle ingenawo amandla okushumeka we-lithium wesivinini esikhulu, i-lithium precipitation noma i-lithium dendrite izokwenzeka, okuzoholela ekuncipheni okungenakuhlehliswa komthamo webhethri futhi kufinyeze impilo yesevisi.Ngaphezu kwalokho, i-electrolyte nayo idinga ukuqhutshwa okuphezulu futhi idinga ukumelana nokushisa okuphezulu, i-flame retardant kanye ne-anti-overcharge.Ngakolunye uhlangothi, ukushaja okusheshayo kwamandla amakhulu kuzoletha ukwanda okukhulu kokushisa, futhi nokuphathwa okushisayo kwamaphakethe ebhethri ane-voltage ephezulu kubalulekile.
Ngokuvamile, ekwakhiweni okuphephile kwephakethe lebhethri, ukuvikeleka kokusakazwa okushisayo kungenziwa ngokusebenzisa izinto zokufakwa ezishisayo ezinokushisa okuphezulu kokusebenza, njengamaphedi e-ceramic insulation kanye namabhodi e-mica.Kodwa-ke, ngaphezu kokuvikelwa kokushisa okungenzi lutho, izixazululo ezisebenzayo zokuvikela ukushisa nazo zibalulekile.Embukisweni wezimoto i-Shanghai, amabhizinisi ahlukahlukene amabhethri anamandla nawo “abonise amakhono awo” mayelana nokuqamba izinto ezintsha kanye nokulawula ukushisa kwamaphakheji.
Phambilini, ubuchwepheshe bokushaja obushesha kakhulu ngesikhathi sika-Ningde bebumboze amanethiwekhi kagesi, izindandatho ze-ion ezisheshayo, i-isotropic graphite, ama-electrolyte ama-superconducting, ama-pore diaphragms aphezulu, ama-electrode anama-multi-gradient, izindlebe eziningi, ukuqapha okungenzeka kwe-anode, njll.
Ubuchwepheshe be-Anotropic buvumela ama-ion e-lithium ukuthi ashumekwe esiteshini se-graphite amadigri angu-360 ukuthuthukisa kakhulu isivinini sokushaja.Ukuqapha okungase kube khona kwe-anode kungalungisa imanje ukushaja ngesikhathi sangempela, ukuze ibhethri ikwazi ukukhulisa umthamo wayo wokushaja ngaphakathi kwebanga eliphephile ngaphandle kokusabela ohlangothini lokuhlaziywa kwe-lithium, futhi ifinyelele ibhalansi phakathi kwesivinini sokushaja esidlulele nokuphepha.Ibhethri le-ternary Kirin lamukela isistimu ye-electrode eyi-nickel ephezulu + esekwe ku-silicon, enamandla afinyelela ku-255Wh/kg, esekela imizuzu emi-5 ukuqala okushisayo okushesha kanye nemizuzu eyi-10 ishaja u-80%.Kodwa-ke, phakathi nenqubo yokushaja nokukhipha, ukunwetshwa kwevolumu ye-silicon kungaba phezulu ku-400%, futhi into esebenzayo kulula ukuyikhipha epuleti le-polar, okubangela ukuncishiswa komthamo ngokushesha futhi kwakha i-membrane ye-SEI engazinzile.Ngakho-ke, izinto ezisetshenziswayo enkathini ye-Ningde zisebenzisa ama-carbon nanotubes anodonga olulodwa anobubanzi obuyi-1.5~2 nanotubes, abopha kakhulu kuma-silicon anode futhi anenethiwekhi eqhutshwayo egcwele.Ngisho noma izinhlayiya ze-silicon anode zanda ngevolumu futhi ziqala ukuvela imifantu, zingakwazi ukugcina ukuxhumana okuhle ngama-carbon nanotubes anodonga olulodwa.Ngaphezu kwalokho, i-electrolyte yebhethri ye-Kirin yamukela i-LiFSI futhi isebenzisa izithasiselo ze-FEC ukwenza i-lithium fluoride ku-electrode engemihle.I-ion radius incane, engalungisa imifantu ngesikhathi.Mayelana nokuphathwa kwe-thermal, i-Kirin Battery ihlanganisa isistimu yokupholisa uketshezi kanye nephedi yokufakwa kwe-thermal ibe isangweji elinwebekayo elinemisebenzi eminingi phakathi kwamaseli.Uma kuqhathaniswa nohlelo lwepuleti olupholile olujwayelekile olubekwe ngenhla kweseli, indawo yokudlulisa ukushisa iphindwe kane.Ngenxa yendawo yokupholisa enkulu, ukusebenza kahle kokulawula izinga lokushisa kweseli kuye kwanda ngo-50%.Ipuleti lokupholisa elime mpo lidala isikhala sokuhlukaniswa nesihlobo esivundlile.Kukhona ishidi lesinxephezelo sokunwetshwa + i-adiabatic airgel phakathi kwamaseli e-longitudinal, evimbela ngokuphumelelayo ukushisa ukuze kuzuzwe "i-zero thermal runaway".
Isikhathi sokuthumela: Jun-26-2023