No ke aha e ʻoi aku ka maikaʻi o ka pākaukau LFP (lithium iron phosphate, LiFePO4) ma mua o nā pākiki kemika ʻekolu i ka wā e hoʻouka ai?

ʻO ke kī i ka lōʻihi o ke ola opākaukau LFP ʻO kāna volta hana, aia ma waena o 3.2 a me 3.65 volts, haʻahaʻa ma mua o ka uila i hoʻohana mau ʻia e ka pākaukau NCM.Hoʻohana ka lithium iron phosphate i ka phosphate ma ke ʻano he mea kūpono a me ka electrode carbon graphite e like me ka electrode maikaʻi ʻole;Loaʻa iā lākou ke ola lawelawe lōʻihi, ke kūpaʻa wela maikaʻi a me ka hana electromechanical maikaʻi.

pākaukau LFPe hana ana ma ka volta helu o 3.2V, no laila ke hoʻohui ʻia nā ʻehā ʻehā, hiki ke loaʻa ka pākaukau 12.8V;Hiki ke kiʻi ʻia ka pākaukau 25.6V ke hoʻopili ʻia nā pā 8.No laila, ʻo ka kemika LFP ke koho maikaʻi loa e hoʻololi i nā pākaona lead-acid hohonu i nā noi like ʻole.I kēia manawa, ʻo kā lākou haʻahaʻa haʻahaʻa haʻahaʻa e kaupalena i kā lākou hoʻohana ʻana i nā kaʻa nui, no ka mea ʻoi aku ka maikaʻi a me ka palekana.ʻO kēia kūlana i alakaʻi i ka hoʻohana ʻana i kēia ʻenehana i ka mākeke Kina, ʻo ia ke kumu i hana ʻia ai ka 95% o nā pahu lithium hao phosphate ma Kina.

ʻO ka pākaukau me ka graphite anode a me ka LFP cathode e hoʻohana ana ma ka volts nominal o 3.2 volts a me ka volts kiʻekiʻe o 3.65 volts.Me kēia mau voltages (haʻahaʻa loa), hiki ke hoʻokō ʻia nā pōʻai ola 12000.Eia nō naʻe, hiki i nā pā me ka graphite anode a me ka NCM (nickel, cobalt and manganese oxide) a i ʻole NCA (nickel, nickel and aluminum oxide) cathode ke hana ma kahi voli kiʻekiʻe, me ka volts nominal o 3.7 volts a me ka volts kiʻekiʻe o 4.2 volts.Ma lalo o kēia mau kūlana, ʻaʻole i manaʻo ʻia e hoʻokō ʻoi aku ma mua o 4000 ka hoʻouka ʻana a me ka hoʻokuʻu ʻana.

Inā haʻahaʻa ka uila hana, ʻoi aku ka paʻa o ka wai electrolyte ma waena o nā electrodes ʻelua (kahi e neʻe ai nā ion lithium) i kemika.Hōʻike kēia ʻāpana i ke kumu o ke ola ʻana o ka pākaukau LTO ma 2.3V a me ka pākaukau LFP e hana ana ma 3.2V i ʻoi aku ka maikaʻi o ke ola ma mua o ka NCM a i ʻole NCA pākahi e hana ana ma 3.7V.Ke piʻi aʻe ka pākaukau a no laila ke kiʻekiʻe o ka volta, e hoʻomaka mālie ka wai electrolyte e ʻino i ka electrode pākahi.No laila, ʻaʻohe pākaukau e hoʻohana ana i ka spinel i kēia manawa.ʻO Spinel kahi mineral i hana ʻia e ka manganese a me ka alumini.ʻO 5V kona puʻupuʻu cathode, akā pono ka electrolyte hou a me ka hoʻomaikaʻi ʻana i ka electrode coating e pale ai i ka corrosion.

ʻO ia ke kumu e pono ai e mālama i ka pākaukau ma ka SoC haʻahaʻa loa (state of charge or% charge), no ka mea e hana ia ma kahi haʻahaʻa haʻahaʻa a hoʻonui ʻia kona ola.