Muri iyi nyandiko, imikorere yikirenga ya bateri ya 40Ah yumufuka hamwe na electrode nziza NCM111 + LMO yizwe hakoreshejwe ubushakashatsi no kwigana.Amashanyarazi arenze urugero ni 0.33C, 0.5C na 1C.Ingano ya batiri ni 240mm * 150mm * 14mm.(ubaze ukurikije voltage yagenwe ya 3.65V, ingano yayo yihariye ni 290Wh / L, iracyari hasi)
Umuvuduko, ubushyuhe hamwe nimbaraga zo guhangana imbere mugihe cyikirenga kirerekanwa mumashusho 1. Irashobora kugabanywa mubice bine:
Icyiciro cya mbere: 1
Icyiciro cya kabiri: 1.2
Icyiciro cya gatatu: 1.4
Icyiciro cya kane: SOC> 1.6, umuvuduko wimbere wa bateri urenze imipaka, ikariso yaturika, diaphragm iragabanuka kandi ihindagurika, hamwe na batiri yumuriro.Umuzunguruko mugufi uboneka imbere muri bateri, ingufu nyinshi zirekurwa vuba, kandi ubushyuhe bwa bateri buzamuka cyane kugeza kuri 780 ° C.
Ubushyuhe butangwa mugihe cyo kurenza urugero burimo: ubushyuhe bwa entropiya ihindagurika, ubushyuhe bwa Joule, ubushyuhe bwimiti nubushyuhe bwarekuwe numuyoboro mugufi.Ubushyuhe bwa reaction ya chimique burimo ubushyuhe bwarekuwe no gusesa kwa Mn, reaction ya lithium yicyuma hamwe na electrolyte, okiside ya electrolyte, kubora kwa firime SEI, kubora kwa electrode mbi no kubora kwa electrode nziza. (NCM111 na LMO).Imbonerahamwe 1 irerekana impinduka zishimishije nimbaraga zo gukora za buri reaction.(Iyi ngingo yirengagije reaction ya binders)
Igishushanyo cya 3 ni ikigereranyo cyikigereranyo cyo kubyara ubushyuhe mugihe kirenze urugero hamwe nuburyo butandukanye bwo kwishyuza.Imyanzuro ikurikira irashobora gukurwa mubishusho3:
1) Mugihe amashanyarazi yishyurwa yiyongera, ubushyuhe bwumuriro burigihe.
2) Umusaruro wubushyuhe mugihe cyo kwishyuza cyane wiganjemo ubushyuhe bwa Joule.SOC <1.2, umusaruro wubushyuhe wose uringaniye nubushyuhe bwa Joule.
3) Mu cyiciro cya kabiri (1
4) SOC> 1.45, ubushyuhe bwarekuwe nigisubizo cya lithium yicyuma na electrolyte bizarenga ubushyuhe bwa Joule.
5) Iyo SOC> 1.6, reaction yo kubora hagati ya firime ya SEI na electrode mbi itangiye, umuvuduko wubushyuhe bwa okiside ya electrolyte yiyongera cyane, kandi igipimo cy’ubushyuhe cyose kigera ku giciro cyo hejuru.(Ibisobanuro biri muri 4 na 5 mubuvanganzo ntaho bihuriye n'amashusho, kandi amashusho hano azatsinda kandi yarahinduwe.)
6) Mugihe cyo kurenza urugero, reaction ya lithium yicyuma hamwe na electrolyte hamwe na okiside ya electrolyte nibyo byingenzi.
Binyuze mu isesengura ryavuzwe haruguru, ubushobozi bwa okiside ya electrolyte, ubushobozi bwa electrode itari nziza, hamwe nubushyuhe bwo gutangira ubushyuhe bwumuriro nibintu bitatu byingenzi byo kwishyuza birenze.Igicapo 4 cerekana ingaruka zibintu bitatu byingenzi kumikorere irenze.Birashobora kugaragara ko kwiyongera mubushobozi bwa okiside ya electrolyte bishobora guteza imbere cyane imikorere yikirenga ya bateri, mugihe ubushobozi bwa electrode mbi butagira ingaruka nke kumikorere yikirenga..
Reba
D. Ren n'abandi.Ikinyamakuru cyimbaraga 364 (2017) 328-340
Igihe cyo kohereza: Ukuboza-15-2022