Amabhethri amaningana e-lithium angaxhunywa ngokulandelana ukuze akhe iphakethe lebhethri, elinganikeza amandla emithwalweni eyahlukahlukene futhi lingashajwa ngokujwayelekile ngeshaja efanayo. Amabhethri e-lithium awadingi noma yiluphi uhlelo lokuphatha ibhethri (I-BMS) ukushaja nokukhipha. Pho kungani wonke amabhethri e-lithium emakethe enezela i-BMS? Impendulo iwukuphepha nokuphila isikhathi eside.
Uhlelo lokuphatha ibhethri i-BMS (Uhlelo Lokuphatha Ibhethri) lusetshenziselwa ukuqapha nokulawula ukushaja nokukhipha amabhethri ashajwayo. Umsebenzi obaluleke kakhulu wohlelo lokuphatha ibhethri le-lithium (i-BMS) ukuqinisekisa ukuthi amabhethri ahlala ngaphakathi kwemingcele yokusebenza ephephile nokuthatha isinyathelo ngokushesha uma noma yiliphi ibhethri ngalinye liqala ukweqa imingcele. Uma i-BMS ithola ukuthi i-voltage iphansi kakhulu, izonqamula umthwalo, futhi uma i-voltage iphezulu kakhulu, izonqamula ishaja. Izophinde ihlole ukuthi iseli ngalinye elisephaketheni lise-voltage efanayo futhi yehlise noma yiliphi i-voltage ephakeme kunezinye amaseli. Lokhu kuqinisekisa ukuthi ibhethri alifinyeleli kuma-voltage aphezulu noma aphansi ngendlela eyingozi.–okuvame ukuba yimbangela yomlilo webhethri le-lithium esikubona ezindabeni. Ingaqapha ngisho nokushisa kwebhethri futhi inqamule iphakethe lebhethri ngaphambi kokuba lishise kakhulu ukuba libambe umlilo. Ngakho-ke, uhlelo lokuphatha ibhethri i-BMS luvumela ibhethri ukuthi livikelwe kunokuthembela kuphela kushaja enhle noma ekusebenzeni kahle komsebenzisi.
Kungani ungakwenzi lokho?'Ingabe amabhethri e-lead-acid adinga uhlelo lokuphatha ibhethri? Ukwakheka kwamabhethri e-lead-acid akushisi kakhulu, okwenza kube lula kakhulu ukubamba umlilo uma kunenkinga yokushaja noma ukukhipha. Kodwa isizathu esiyinhloko sihlobene nendlela ibhethri eliziphatha ngayo uma lishajwe ngokugcwele. Amabhethri e-lead-acid nawo akhiwe ngamaseli axhunywe ochungechungeni; uma iseli elilodwa linokushaja okungaphezulu kancane kunamanye amaseli, lizovumela kuphela ukuthi ugesi udlule kuze kube yilapho amanye amaseli eshajwe ngokugcwele, kuyilapho kugcinwa i-voltage efanele, njll. Amaseli ayabamba. Ngale ndlela, amabhethri e-lead-acid "azilinganisela" njengoba eshaja.
Amabhethri e-lithium ahlukile. I-electrode enhle yamabhethri e-lithium aphinde ashajwe ikakhulukazi yizinto ze-lithium ion. Umgomo wayo osebenzayo unquma ukuthi ngesikhathi senqubo yokushaja nokukhipha, ama-electron e-lithium azogijima kuzo zombili izinhlangothi zama-electrode amahle nangalungile ngokuphindaphindiwe. Uma i-voltage yeseli elilodwa ivunyelwe ukuba ngaphezu kuka-4.25v (ngaphandle kwamabhethri e-lithium aphezulu), isakhiwo se-anode microporous singase sibhidlike, izinto zekristalu eqinile zingakhula futhi zibangele umjikelezo omfushane, bese izinga lokushisa likhuphuka ngokushesha, ekugcineni kuholele emlilweni. Lapho ibhethri le-lithium selishajwe ngokugcwele, i-voltage ikhuphuka ngokuzumayo futhi ingafinyelela amazinga ayingozi ngokushesha. Uma i-voltage yeseli elithile ephaketheni lebhethri iphakeme kuneyamanye amaseli, leli seli lizofinyelela i-voltage eyingozi kuqala ngesikhathi senqubo yokushaja. Ngalesi sikhathi, i-voltage iyonke yephakethe lebhethri ayikafiki inani eligcwele, futhi ishaja ngeke iyeke ukushaja. Ngakho-ke, amaseli afinyelela i-voltage eyingozi kuqala azobangela izingozi zokuphepha. Ngakho-ke, ukulawula nokuqapha i-voltage iyonke yephakethe lebhethri akwanele kuma-chemistries asekelwe ku-lithium. I-BMS kumele ihlole i-voltage yeseli ngayinye eyakha ibhethri.
Ngakho-ke, ukuqinisekisa ukuphepha nokuphila isikhathi eside kwebhethri le-lithium, uhlelo lokuphatha ibhethri olusezingeni eliphezulu noluthembekile i-BMS luyadingeka ngempela.
Isikhathi sokuthunyelwe: Okthoba-25-2023
