Chifukwa chiyani batire ya LFP (lithium iron phosphate, LiFePO4) imachita bwino kuposa batire lamankhwala ena atatu panthawi yolipira?

Chinsinsi cha moyo wautali waLFP batire ndi mphamvu yake yogwiritsira ntchito, yomwe ili pakati pa 3.2 ndi 3.65 volts, yotsika kuposa magetsi omwe amagwiritsidwa ntchito ndi batri la NCM.The lithiamu chitsulo mankwala batire ntchito phosphate monga zinthu zabwino ndi mpweya graphite elekitirodi monga elekitirodi zoipa;Amakhalanso ndi moyo wautali wautumiki, kukhazikika kwamafuta abwino komanso magwiridwe antchito abwino amagetsi.

LFP batireimagwira ntchito pamagetsi odziwika a 3.2V, kotero mabatire anayi akalumikizidwa, batire ya 12.8V ingapezeke;Batire ya 25.6V ikhoza kupezeka pamene mabatire 8 alumikizidwa.Chifukwa chake, chemistry ya LFP ndiye chisankho chabwino kwambiri chosinthira mabatire a lead-acid-cycle munjira zosiyanasiyana.Pakalipano, ndizochepa mphamvu zawo zomwe zimalepheretsa kugwiritsa ntchito magalimoto akuluakulu, chifukwa ndi otsika mtengo komanso otetezeka.Izi zidapangitsa kuti ukadaulo uwu utengeke pamsika waku China, ndichifukwa chake 95% ya mabatire a lithiamu iron phosphate amapangidwa ku China.

Batire yokhala ndi graphite anode ndi LFP cathode imagwira ntchito pamagetsi odziwika a 3.2 volts ndi mphamvu yayikulu ya 3.65 volts.Ndi ma voltages awa (komanso otsika kwambiri), maulendo 12000 a moyo amatha kutheka.Komabe, mabatire okhala ndi graphite anode ndi NCM (nickel, cobalt ndi manganese oxide) kapena NCA (nickel, nickel and aluminium oxide) cathode amatha kugwira ntchito pamagetsi apamwamba, ndi voliyumu yadzina ya 3.7 volts ndi voteji yayikulu ya 4.2 volts.Pansi pazimenezi, sizikuyembekezeka kukwaniritsa zopitilira 4000 zolipiritsa ndikutulutsa.

Ngati voteji ntchito ndi otsika, madzi electrolyte pakati pa maelekitirodi awiri batire (kudzera ma lithiamu ayoni kusuntha) ndi mankhwala khola.Gawoli likufotokozera chifukwa chake batire ya LTO yomwe ikugwira ntchito pa 2.3V ndi batire ya LFP yomwe ikugwira ntchito pa 3.2V imakhala ndi moyo wabwino kuposa batire ya NCM kapena NCA yomwe ikugwira ntchito pa 3.7V.Batire ikakhala ndi chaji chokwera kwambiri, mphamvu yamagetsi yamadzimadzi imayamba pang'onopang'ono kuwononga ma elekitirodi a batire.Chifukwa chake, palibe batire yogwiritsa ntchito spinel pakadali pano.Spinel ndi mchere wopangidwa ndi manganese ndi aluminium.Magetsi ake a cathode ndi 5V, koma ma electrolyte atsopano ndi zokutira zowongolera zama elekitirodi ndizofunikira kuti zisawonongeke.

Ichi ndichifukwa chake ndikofunikira kusunga batire pamalo otsika kwambiri a SoC (boma la charger kapena% charge), chifukwa idzagwira ntchito pamagetsi otsika ndipo moyo wake udzakulitsidwa.