Kutheni le nto i-LFP (i-lithium iron phosphate, i-LiFePO4) ibhetri isebenza ngcono kunezinye iibhetri zeekhemikhali ezintathu ngexesha lokutshaja?

Isitshixo kubomi obude beIbhetri ye-LFP i-voltage yayo yokusebenza, ephakathi kwe-3.2 kunye ne-3.65 volts, ephantsi kunombane oqhelekileyo osetyenziswa yibhetri ye-NCM.Ibhetri ye-lithium ye-iron phosphate isebenzisa i-phosphate njengento efanelekileyo kunye ne-carbon graphite electrode njenge-electrode engalunganga;Kwakhona banobomi obude benkonzo, uzinzo oluhle lwe-thermal kunye nokusebenza kakuhle kwe-electromechanical.

Ibhetri ye-LFPisebenza kwi-voltage ye-3.2V, ngoko xa iibhetri ezine zixhunyiwe, ibhetri ye-12.8V inokufumaneka;Ibhetri ye-25.6V inokufumaneka xa iibhetri ezi-8 zixhunyiwe.Ke ngoko, ikhemistri ye-LFP lolona khetho lulungileyo lokutshintsha iibhetri ze-lead-acid ezinzulu kwizicelo ezahlukeneyo.Ukuza kuthi ga ngoku, kukuxinana kwabo kwamandla aphantsi okunciphisa ukusetyenziswa kwabo kwizithuthi ezinkulu, kuba zibiza kakhulu kwaye zikhuselekile.Le meko yakhokelela ekwamkelweni kobu buchwepheshe kwimarike yaseTshayina, yingakho i-95% yeebhetri ze-lithium iron phosphate zenziwe eChina.

Ibhetri ene-graphite anode kunye ne-LFP cathode isebenza kwi-voltage ebizwa ngokuba yi-3.2 volts kunye ne-voltage ephezulu ye-3.65 volts.Ngala mandla ombane (nawo aphantsi kakhulu), i-12000 imijikelezo yobomi inokufezekiswa.Nangona kunjalo, iibhetri ezine-graphite anode kunye ne-NCM (i-nickel, i-cobalt kunye ne-manganese oxide) okanye i-NCA (i-nickel, i-nickel kunye ne-aluminium oxide) i-cathode inokusebenza kumbane ophezulu, kunye ne-voltage ye-nominal ye-3.7 volts kunye ne-voltage ephezulu ye-4.2 volts.Ngaphantsi kwezi meko, akulindelekanga ukuba kufezekiseke ngaphezu kwemijikelezo ye-4000 yokutshaja kunye nokukhupha.

Ukuba i-voltage esebenzayo iphantsi, i-electrolyte engamanzi phakathi kwee-electrode ezimbini zebhetri (ekuthi i-lithium ion ihambe ngayo) izinzile ngokwekhemikhali.Le nxalenye ichaza ukuba kutheni ibhetri ye-LTO esebenza kwi-2.3V kunye ne-LFP ibhetri esebenza kwi-3.2V inobomi obungcono kune-NCM okanye i-NCA ibhetri esebenza kwi-3.7V.Xa ibhetri inexabiso eliphezulu kwaye ngoko ke amandla ombane aphezulu, i-electrolyte elulwelo iya kuqala ngokucotha ukurhwaphiliza i-electrode yebhetri.Ke ngoko, akukho bhetri isebenzisa i-spinel okwangoku.I-spinel yiminerali eyenziwe yi-manganese kunye ne-aluminiyam.I-voltage yayo ye-cathode yi-5V, kodwa i-electrolyte entsha kunye nokuphuculwa kwe-electrode coating iyafuneka ukukhusela ukubola.

Yingakho kuyimfuneko ukugcina ibhetri kwi-SoC ephantsi kakhulu (imeko yentlawulo okanye i-%), kuba iya kusebenza kumbane ophantsi kwaye ubomi bayo buya kwandiswa.