Iibhetri ezininzi ze-lithium zinokudityaniswa kuthotho ukwenza ipakethi yebhetri, enokubonelela ngamandla kwimithwalo eyahlukeneyo kwaye ingahlawuliswa ngokuqhelekileyo ngetshaja ehambelanayo. Iibhetri zeLithium azifuni nayiphi na inkqubo yokulawula ibhetri (BMS) ukuhlawulisa kunye nokukhupha. Ke kutheni zonke iibhetri ze-lithium kwimarike zongeza i-BMS? Impendulo lukhuseleko kunye nokuphila ixesha elide.
Inkqubo yolawulo lwebhetri iBMS (iNkqubo yoLawulo lweBattery) isetyenziselwa ukubeka esweni nokulawula ukutshajiswa nokukhutshwa kweebhetri ezinokutshajwa. Umsebenzi obaluleke kakhulu wenkqubo yokulawula ibhetri ye-lithium (BMS) kukuqinisekisa ukuba iibhetri zihlala ngaphakathi kwemida ekhuselekileyo yokusebenza kunye nokuthatha inyathelo elikhawulezileyo ukuba nayiphi na ibhetri yomntu iqala ukudlula imida. Ukuba i-BMS ibona ukuba i-voltage iphantsi kakhulu, iya kukhupha umthwalo, kwaye ukuba i-voltage iphezulu kakhulu, iya kukhupha ishaja. Iya kujonga kwakhona ukuba iseli nganye ekwipakethi ikumbane ofanayo kwaye inciphise nawaphi na amandla ombane aphezulu kunezinye iiseli. Oku kuqinisekisa ukuba ibhetri ayifikeleli ngokuyingozi kumandla ombane aphezulu okanye aphantsi-edla ngokuba yimbangela yomlilo webhetri ye-lithium esiyibona kwiindaba. Iyakwazi nokubeka iliso kubushushu bebhetri kwaye ikhuphe ipakethi yebhetri phambi kokuba ishushu kakhulu ukuba ibambe umlilo. Ngoko ke, inkqubo yolawulo lwebhetri ye-BMS ivumela ibhetri ukuba ikhuselwe kunokuthembela ngokupheleleyo kwitshaja elungileyo okanye ukusebenza kakuhle komsebenzisi.
Kutheni ungenzi't iibhetri lead-asidi kufuneka inkqubo yolawulo ibhetri? Ukubunjwa kweebhetri ze-lead-asidi kuncinci ukutsha, okwenza ukuba bancinci kakhulu ukuba babambe umlilo ukuba kukho ingxaki yokutshaja okanye ukukhupha. Kodwa esona sizathu sinento yokwenza nendlela ibhetri eziphatha ngayo xa igcwaliswe ngokupheleleyo. Iibhetri ze-lead-acid nazo zenziwe ngeeseli ezidityaniswe kuthotho; ukuba iseli enye inentlawulo engaphezulu kancinane kunezinye iiseli, iya kuvumela kuphela ukudlula kwangoku de ezinye iiseli zihlawulwe ngokupheleleyo, ngelixa zigcina umbane ofanelekileyo, njl njl. Ngale ndlela, iibhetri ze-lead-asidi "zilungelelanisa" njengoko zihlawulisa.
Iibhetri zeLithium zahlukile. I-electrode efanelekileyo yeebhetri ze-lithium ezitshajekayo ubukhulu becala zizinto ze-lithium ion. Umgaqo wayo wokusebenza umisela ukuba ngexesha lokutshaja kunye nenkqubo yokukhupha, ii-electron ze-lithium ziya kugijima kumacala omabini e-electrode efanelekileyo kunye ne-negative ngokuphindaphindiweyo. Ukuba i-voltage yeseli enye ivumelekile ukuba ibe phezulu kune-4.25v (ngaphandle kweebhetri ze-lithium eziphezulu ze-voltage), isakhiwo se-anode microporous sinokuwa, i-crystal material eqinile ingakhula kwaye ibangele isiphaluka esifutshane, kwaye ke ukushisa kuya kuphakama. ngokukhawuleza, ekugqibeleni kukhokelela kumlilo. Xa ibhetri ye-lithium ihlawuliswe ngokupheleleyo, i-voltage iphakama ngokukhawuleza kwaye inokufikelela ngokukhawuleza kumanqanaba ayingozi. Ukuba i-voltage yeseli ethile kwipakethi yebhetri iphezulu kuneyezinye iiseli, le seli iya kufikelela kumbane oyingozi kuqala ngexesha lenkqubo yokutshaja. Ngeli xesha, i-voltage iyonke yepakethi yebhetri ayikafiki kwixabiso elipheleleyo, kwaye ishaja ayiyi kuyeka ukutshaja. . Ke ngoko, iiseli ezifikelela kumbane oyingozi kuqala ziya kubangela umngcipheko wokhuseleko. Ke ngoko, ukulawula kunye nokubeka iliso kumbane opheleleyo wepakethi yebhetri akwanelanga kwiikhemistri esekwe kwi-lithium. I-BMS kufuneka ijonge umbane weseli nganye eyenza ipakethi yebhetri.
Ngoko ke, ukuqinisekisa ukhuseleko kunye nobomi benkonzo ende yeepakethe zebhetri ye-lithium, inkqubo yokulawula ibhetri esemgangathweni kunye nethembekileyo i-BMS iyafuneka ngokwenene.
Ixesha lokuposa: Oct-25-2023
