ʻO ka electrode maikaʻi onā pila lithium-ionHe mea lithium hao phosphate, nona nā pono nui i ka hana palekana a me ke ola pōʻaiapuni. ʻO kēia kekahi o nā ʻōkuhi loea koʻikoʻi o ka pākahiko mana. Hiki ke hoʻokō ʻia ka pākahiko Lifepo4 me ke ola pōʻaiapuni hoʻouka a hoʻokuʻu 1C i 2000 mau manawa, ʻaʻole pahū ka puncture, ʻaʻole maʻalahi ke puhi a pahū i ka wā e hoʻouka nui ʻia ai. ʻO nā mea lithium hao phosphate cathode e maʻalahi ai ka hoʻohana ʻana i nā pākahiko lithium-ion nui i nā moʻo.
ʻO ka phosphate hao Lithium ma ke ʻano he cathode
ʻO ka pākahiko Lifepo4 e pili ana i kahi pākahiko lithium-ion e hoʻohana ana i ka lithium hao phosphate ma ke ʻano he mea electrode maikaʻi. ʻO nā mea electrode maikaʻi o nā pākahiko lithium-ion e komo pū ana me ka lithium cobaltate, lithium manganate, lithium nickelate, nā mea ternary, lithium hao phosphate, a me nā mea like. I waena o lākou, ʻo ka lithium cobaltate ka mea electrode maikaʻi i hoʻohana ʻia i ka hapa nui o nā pākahiko lithium-ion. Ma ke kumumanaʻo, ʻo ka lithium hao phosphate kekahi hana hoʻokomo a me ka deintercalation. Ua like kēia kumumanaʻo me ka lithium cobaltate a me ka lithium manganate.
nā pono o ka pila lifepo4
1. Ka hoʻouka ʻana a me ka hoʻokuʻu ʻana i ka pono kiʻekiʻe
He pākahiko lua lithium-ion ka pākahiko Lifepo4. ʻO kekahi kumu nui no nā pākahiko mana. Loaʻa iā ia nā pono nui ma mua o nā pākahiko NI-MH a me Ni-Cd. Loaʻa i ka pākahiko Lifepo4 ka pono o ka hoʻouka a me ka hoʻokuʻu ʻana, a hiki i ka pono o ka hoʻouka a me ka hoʻokuʻu ʻana ke piʻi aʻe ma mua o 90% ma lalo o ke kūlana o ka hoʻokuʻu ʻana, ʻoiai ʻo ka pākahiko lead-acid ma kahi o 80%.
2. hana palekana kiʻekiʻe o ka pila lifepo4
He paʻa a paʻakikī ke palaho ʻana o ka pilina PO i loko o ke aniani phosphate hao lithium, ʻaʻole ia e hiolo a wela paha e like me ka lithium cobaltate a i ʻole e hana i kahi mea oxidizing ikaika ʻoiai ma kahi mahana kiʻekiʻe a i ʻole ka hoʻouka nui ʻana, a no laila he palekana maikaʻi. I ka hana maoli, ua ʻike ʻia kahi ʻāpana liʻiliʻi o ka laʻana he hanana ʻā i ka acupuncture a i ʻole ka hoʻāʻo pōkole, akā ʻaʻohe hanana pahū. I ka hoʻokolohua hoʻouka nui ʻana, ua hoʻohana ʻia kahi hoʻouka uila kiʻekiʻe i ʻoi aku ka kiʻekiʻe ma mua o ka uila hoʻokuʻu ponoʻī, a ua ʻike ʻia aia nō kahi hanana pahū. Eia naʻe, ua hoʻomaikaʻi nui ʻia kona palekana hoʻouka nui i hoʻohālikelike ʻia me ka pākahi lithium cobalt oxide electrolyte wai maʻamau.
3. Ola lōʻihi o ke ola o ka pila Lifepo4
ʻO ka pākahiko Lifepo4 e pili ana i kahi pākahiko lithium-ion e hoʻohana ana i ka lithium hao phosphate ma ke ʻano he mea electrode maikaʻi. ʻO ke ola pōʻaiapuni o ka pākahiko alakaʻi-ʻakika lōʻihi he 300 mau manawa, a ʻo ke kiʻekiʻe loa he 500 mau manawa. ʻOi aku ka nui o ke ola pōʻaiapuni o ka pākahiko mana lithium hao phosphate ma mua o 2000 mau manawa, a hiki ke hoʻohana ʻia ka uku maʻamau (5 hola) a hiki i 2000 mau manawa. ʻO ka pākahiko alakaʻi-ʻakika like ke ʻano he "hapalua makahiki hou, hapalua makahiki kahiko, mālama a mālama no ka hapalua makahiki", a hiki i 1 ~ 1.5 mau makahiki, a hoʻohana ʻia ka pākahiko lifepo4 ma lalo o nā kūlana like, e hiki ke ola theoretical i 7 ~ 8 mau makahiki. I ka noʻonoʻo piha ʻana, ʻoi aku ka nui o ka lakio kumukūʻai hana ma mua o ʻehā mau manawa o nā pākahiko alakaʻi-ʻakika. Hiki ke hoʻopiʻi koke ʻia a hoʻokuʻu ʻia ke kahe kiʻekiʻe me ke kahe kiʻekiʻe 2C. Ma lalo o ka mea hoʻoili kūikawā, hiki ke hoʻopiʻi piha ʻia ka pākahiko i loko o 1.5 mau minuke o ka hoʻopiʻi ʻana o 1.5C, a hiki i ke kahe hoʻomaka ke hiki i 2C, akā ʻaʻohe hana like o ka pākahiko alakaʻi-ʻakika.
4. Hana maikaʻi o ka mahana
Hiki i ka mahana kiʻekiʻe o ka lithium iron phosphate ke piʻi i 350 ° C -500 ° C ʻoiai ʻo ka lithium manganate a me ka lithium cobaltate ma kahi o 200 ° C wale nō. ʻO ka laulā o ka mahana hana ākea (-20C–+75C), me ke kūpaʻa wela kiʻekiʻe, hiki i ka piko hoʻomehana uila lithium iron phosphate ke piʻi i 350 °C-500 °C, ʻoiai ʻo ka lithium manganate a me ka lithium cobalt oxide ma 200 °C wale nō.
5. Pākahi Lifepo4 Mana kiʻekiʻe
ʻOi aku ka nui o kona mana ma mua o nā pila maʻamau (lead-acid, a pēlā aku). ʻO ka mana monomer he 5AH-1000AH.
6. ʻAʻohe hopena hoʻomanaʻo
Hana nā pila hoʻouka hou ma lalo o nā kūlana i hoʻokuʻu piha ʻole ʻia, a e hāʻule koke ka mana ma lalo o ka mana i helu ʻia. Ua kapa ʻia kēia hanana ʻo ka hopena hoʻomanaʻo. ʻO ka hoʻomanaʻo e like me ka nickel-metal hydride a me nā pila nickel-cadmium, akā ʻaʻohe hanana o ka pila lifepo4, ʻaʻohe mea i ke ʻano o ka pila, hiki ke hoʻohana ʻia me ka hoʻouka ʻana, ʻaʻohe pono e hoʻokuʻu a hoʻouka hou. 7. Māmā o ka pila lifepo4
ʻO ka pākahiko lifepo4 o ka mana kikoʻī like he 2/3 o ka nui o ka pākahiko kēpau-ʻakika, a ʻo ke kaumaha he 1/3 o ka pākahiko kēpau-ʻakika.
8. Nā pila Lifepo4he launa pū me ke kaiapuni
Manaʻo nui ʻia ka pākahiko he manuahi ia mai nā metala kaumaha a me nā metala kakaikahi (pono nā pākahiko Ni-MH i nā metala kakaikahi), ʻaʻohe ʻawaʻawa (hōʻoia ʻia e SGS), ʻaʻohe haumia, e like me nā lula RoHS ʻEulopa, he palapala hōʻoia pākahiko ʻōmaʻomaʻo loa ia. No laila, ʻo ke kumu i makemake nui ʻia ai nā pākahiko lithium e ka ʻoihana, ʻo ia ka noʻonoʻo ʻana i ke kaiapuni. No laila, ua hoʻokomo ʻia ka pākahiko i loko o ka hoʻolālā hoʻomohala ʻenehana kiʻekiʻe aupuni "863" i ka wā "Hoʻolālā ʻElima Makahiki" a ua lilo i kākoʻo koʻikoʻi aupuni a me ka hoʻoikaika ʻana i ka papahana hoʻomohala. Me ke komo ʻana o Kina i ka WTO, e piʻi koke ka nui o nā paikikala uila ma Kina, a ua koi ʻia nā paikikala uila e komo ana i ʻEulopa a me ʻAmelika Hui Pū ʻIa e hoʻolako ʻia me nā pākahiko ʻaʻole haumia. ʻO ka hana o ka pākahiko lithium-ion e hilinaʻi nui ʻia ma nā mea maikaʻi a me nā mea maikaʻi ʻole. ʻO ka lithium hao phosphate kahi mea pākahiko lithium i ʻike ʻia i nā makahiki i hala iho nei. ʻAʻole hiki ke hoʻohālikelike ʻia kāna hana palekana a me ke ola pōʻaiapuni me nā mea ʻē aʻe. ʻO nā ʻōkuhi loea koʻikoʻi o ka pākahiko. Loaʻa i ka pākahiko Lifepo4 nā pono o ka ʻawaʻawa ʻole, ʻaʻohe haumia, hana palekana maikaʻi, kahi ākea o nā mea maka, nā kumukūʻai haʻahaʻa, a me ke ola lōʻihi. He mea cathode kūpono ia no kahi hanauna hou onā pila lithium-ion.