ʻO ke kua o ka pāhana pāhana lithium ion

  Lithium-ion battery is an indispensable energy storage product that drives human modern life, Lithium ion batteries are indispensable for daily communication, energy storage, household appliances, electric vehicles, electric ships, etc. And in special applications such as military, deep sea, and mining, lithium-ion batteries are characterized by their high energy density, long service life, and superior safety performance, Widely replaced the traditional lead-acid batteries, nickel-metal hydride batteries and other previous generation products.

ʻO nā ʻenehana lithium-ion kahi ʻenehana-intensive ʻoihana， ʻO ka hoʻomohala ʻana o kēia ʻoihana hiki ke hoʻoikaika ikaika i ka hoʻomohala ʻana i nā mea hana a me nā ʻoihana waiwai o ka ʻāina. ʻO ka ʻenehana membrane kiʻekiʻe, ka ʻenehana laina hui maʻalahi, ka haʻahaʻa haʻahaʻa a me ka ʻenehana lewa ea maʻemaʻe kiʻekiʻe a me nā mea hana like i hoʻohana ʻia i ke kaʻina kumu o ka hana ʻana i ka pākaukau lithium ion， He alakaʻi maikaʻi a me ka hana hōʻike no ka hoʻomohala ʻana i nā ʻenehana ʻenehana a me nā lako. Hiki ke hoʻohui ʻia nā mea i hoʻohana ʻia i loko o nā pā lithium-ion me ka ʻaila keleawe kūloko, ka ʻaila cobalt a me ka graphite ore no ka hana hohonu i loko o ka pahu keleawe ultra-thin no nā pā lithium-ion, lithium cobaltate (lithium nickel cobalt manganate) mau mea cathode, a me nā kiʻekiʻe- ikehu graphite anode mea.

ʻOiaiʻo ka lithium-ion batteries i kēia manawa ka mea kaulana loa o ka pila, me ka hoʻomohalaʻana i kaʻenehana, he nui nāʻano o ka lithium-ion,ʻo kēlā me kēia me kona mau pono a me nā meaʻino. Eia nō naʻe, ʻo ka laulā, loaʻa i nā pākahi lithium-ion nā pono maʻamau a me nā hemahema:

1. ʻO nā pōmaikaʻi o nā pākahi lithium-ion.

(1) Kiʻekiʻe Volta: ʻO ka volta hana o kahi pākahiko hoʻokahi hiki ke piʻi i kahi kiʻekiʻe e like me 3.7-3.8V (hiki ke hoʻouka ʻia ka uila kelepona kiʻekiʻe a hiki i ka 4.2V), ʻo ia ʻekolu mau manawa o nā pihi Ni Cd a me Ni-H.

(2) ʻO ka ikehu kikoʻī kiʻekiʻe: I kēia manawa, ʻo ka ikehu kikoʻī maoli e hiki ke hoʻokō ʻia e pili ana i 555Wh / kg, ʻo ia hoʻi e hiki i ka mea ke hiki i kahi mana kikoʻī ma mua o 150mAh / g (3-4 manawa Ni Cd, 2-3 manawa Ni MH), kahi kokoke i ka 88% o kona waiwai theoretical.

(3) Ke ola pōʻai lōʻihi: hiki ke piʻi ma mua o 500 mau manawa, a ʻoi aku paha ma mua o 1000 mau manawa, a hiki i ka lithium iron phosphate ke piʻi aku ma mua o 2000 mau manawa. ʻO ka lōʻihi o ke ola o nā pila i nā mea hoʻokuʻu haʻahaʻa o kēia manawa e pālua i ko lākou hoʻokūkū.

(4) Hana palekana maikaʻi: pollution-free, ʻaʻohe hopena hoʻomanaʻo. E like me ka mea ma mua o Li-ion, ua hōʻemi nā pā lithium-ion i kā lākou wahi noi ma muli o ka hoʻokumu ʻana o nā dendrites a me nā pōkole pōkole i hoʻokumu ʻia e ka lithium metallic. ʻAʻole i loko o ka Li-ion nā mea e hoʻohaumia ai i ke kaiapuni e like me ka cadmium, ke kēpau, a me ka mercury. ʻO kahi drawback nui o kekahi mau pila Ni Cd i kekahi mau kaʻina hana (e like me ka sintering) ʻo ia ka "hoʻomanaʻo hoʻomanaʻo", ka mea e kaohi nui ai i ka hoʻohana ʻana i nā pā. Eia naʻe, ʻaʻole loaʻa kēia pilikia ʻo Li-ion.

(5) Haʻahaʻa hoʻokuʻu iho: ʻO ka hoʻokuʻu ponoʻī ʻana o Li ion, i hoʻopiha piha ʻia i ka lumi wela a mālama ʻia no hoʻokahi mahina, ma kahi o 2%, haʻahaʻa loa ma mua o 25-30% o Ni Cd a me 30-35% o Ni. a me MH.

(6) Ka hoʻouka wikiwiki a me ka hoʻokuʻu ʻana: Hiki i ka hiki ke piʻi ma luna o 80% o ka mana nominal ma hope o 30 mau minuke o ka hoʻouka ʻana, a i kēia manawa hiki i nā pā hao phosphate ke hiki i 90% o ka mana nominal ma hope o 10 mau minuke o ka hoʻouka ʻana.

(7) High working temperature range: The working temperature is -25~55 ° C. With the improvement of the electrolyte and positive electrode, it is expected to expand to -40~70 ° C.

2. ʻO nā pōʻino o nā pākahi lithium-ion

(1) Kaʻelemakule: ʻAʻole e like me nā ʻokoʻa ʻē aʻe e hiki ke hoʻihoʻi hou ʻia, e emi mālie ka mana o nā pā lithium-ion, kūʻokoʻa i ka helu o nā mea hoʻohana, akā pili i ka mahana. ʻO ka mīkini hiki ke piʻi mālie ka pale kūloko, no laila e ʻike ʻia i nā huahana uila me nā au hana kiʻekiʻe. ʻO ka hoʻololi ʻana i ka graphite me ka lithium titanate me he mea lā e hoʻolōʻihi i ke ola.

(2) ʻAʻole hiki ke hoʻopaʻa i ka overcharging: I ka wā o ka overcharging, e hoʻopaʻa mau nā ion lithium i hoʻokomo ʻia i loko o ka lattice a ʻaʻole hiki ke hoʻokuʻu ʻia, hiki ke alakaʻi i ke ola pōkole pōkole a me ka hana kinoea e hoʻoulu ai i nā ʻea kinoea.

(3) ʻAʻole hiki ke pale i ka hoʻokuʻu ʻana: I ka wā o ka hoʻokuʻu ʻana, hoʻoneʻe ʻia ka nui o nā ion lithium mai ka electrode, hiki ke hoʻoheheʻe ʻia ka lattice, hoʻopōkole i ke ola, a hoʻoulu i ka hana kinoea, ka hopena i nā ʻōpū kinoea.

(4) Pono nā mīkini pale he nui: Ma muli o ka hoʻohana hewa ʻana e hiki ke hōʻemi i ke ola a hiki i ka pahū ʻana, ua hoʻohui ʻia nā mīkini pale he nui i ka hoʻolālā ʻana o nā pā lithium-ion.

Kaapuni pale: pale i ka hoʻouka ʻana, ka hoʻokuʻu ʻana, ka hoʻonui, a me ka wela.

ʻO ke awa hoʻopau: e pale i ke kaomi nui i loko o ka pākaukau.

ʻO nā hiʻohiʻona diaphragm: He kiʻekiʻe ke kūpaʻa puncture e pale aku i nā kaʻa pōkole kūloko; Ke kiʻekiʻe loa ka mahana o loko o ka pākaukau, hiki ke hoʻoheheʻe ʻia, pale i nā ion lithium mai ka hele ʻana mai, hoʻopaʻa i nā hopena pākaukau, a hoʻonui i ke kūpaʻa kūloko (a hiki i 2kQ).

I ka hōʻuluʻulu manaʻo, ʻo ka hoʻomohala ʻana o ka ʻoihana pākaukau lithium-ion he ʻoihana ikaika ia e hoʻolaha ana i nā ʻāina ulu i nā ʻāina ulu loa.