Electrode e ntle ealibeteri tsa lithium-ionke lithium iron phosphate material, e nang le melemo e meholo ts'ebetsong ea ts'ireletso le bophelo ba potoloho.Tsena ke tse ling tsa matšoao a bohlokoa ka ho fetisisa a tekheniki a betri ea matla.Betri ea Lifepo4 e nang le 1C ea ho tjhaja le ho lahla bophelo ba potoloho e ka finyelloa ka makhetlo a 2000, ho phunya ha ho phatlohe, ha ho bonolo ho chesa le ho phatloha ha ho fetisoa.Lisebelisoa tsa lithium iron phosphate cathode li etsa hore libeteri tsa lithium-ion tse nang le matla a maholo li be bonolo ho li sebelisa letotong.
Lithium iron phosphate e le thepa ea cathode
Betri ea Lifepo4 e bolela betri ea lithium-ion e sebelisang lithium iron phosphate e le lisebelisoa tse ntle tsa elektrode.Lisebelisoa tse ntle tsa electrode tsa libeteri tsa lithium-ion haholo-holo li kenyelletsa lithium cobaltate, lithium manganate, lithium nicklate, lisebelisoa tsa ternary, lithium iron phosphate, joalo-joalo.Har'a tsona, lithium cobaltate ke lisebelisoa tse ntle tsa electrode tse sebelisoang ka libeteri tse ngata tsa lithium-ion.Ha e le hantle, lithium iron phosphate le eona ke ts'ebetso ea ho kenya le ho kopanya.Molao-motheo ona o tšoana le lithium cobaltate le lithium manganate.
melemo ea betri ea lifepo4
1. Ts'ebetso e phahameng ea ho tjhaja le ho lahla
Betri ea Lifepo4 ke betri ea bobeli ea lithium-ion.Sepheo se seng se seholo ke ho ba le libeteri tsa motlakase.E na le melemo e meholo ho feta libeteri tsa NI-MH le Ni-Cd.Betri ea Lifepo4 e na le tjhaji e phahameng mme e sebetsa hantle, mme tjhaja le bokgoni ba ho tjhaja di ka fihla ho feta 90% tlasa boemo ba ho tjhaja, ha betri ya asiti ya lead e ka ba 80%.
2. lifepo4 betri ts'ebetso e phahameng ea polokeho
PO bond ka kristale ea lithium iron phosphate e tsitsitse ebile e thata ho senyeha, 'me ha e oele kapa e chesa joaloka lithium cobaltate kapa e etsa ntho e matla ea oxidizing esita le mocheso o phahameng kapa o feteletseng,' me kahoo o na le tšireletso e ntle.ka ts'ebetso ea sebele. , karolo e nyenyane ea sampuli e ile ea fumanoa e e-na le ketsahalo e tukang ho acupuncture kapa tlhahlobo e khutšoanyane ea potoloho, empa ho ne ho se na ketsahalo ea ho phatloha.Tekong ea overcharge, ho ile ha sebelisoa tefiso e phahameng ea motlakase e neng e phahame ka makhetlo a 'maloa ho feta motlakase oa ho itšehla thajana, 'me ho ile ha fumanoa hore ho ntse ho e-na le ketsahalo ea Ho phatloha.Leha ho le joalo, polokeho ea eona e fetelletseng e ntlafalitsoe haholo ha e bapisoa le betri e tloaelehileng ea electrolyte lithium cobalt oxide.
3. Lifepo4 betri bophelo bo bolelele ba potoloho
Betri ea Lifepo4 e bolela betri ea lithium-ion e sebelisang lithium iron phosphate e le lisebelisoa tse ntle tsa elektrode.Betri e nang le acid e ngata ea bophelo bo bolelele e na le bophelo ba potoloho ea makhetlo a ka bang 300, 'me e phahameng ka ho fetisisa ke makhetlo a 500.Betri ea matla a lithium iron phosphate e na le bophelo ba potoloho ea makhetlo a fetang 2000, 'me tefiso e tloaelehileng (tekanyo ea lihora tse 5) e ka sebelisoa ho fihlela makhetlo a 2000.Betri e ts'oanang ea boleng ba lead-acid ke "selemo se secha, halofo ea selemo, tlhokomelo le tlhokomelo bakeng sa halofo ea selemo", ho fihlela lilemo tse 1 ~ 1.5, 'me betri ea lifepo4 e sebelisoa tlas'a maemo a tšoanang, bophelo ba theory bo tla ho fihlela lilemo tse 7-8.Ha ho nahanoa ka botlalo, karo-karolelano ea theko ea ts'ebetso e feta makhetlo a mane ho feta ea libeteri tsa asiti ea lead.Phallo e phahameng ea hona joale e ka qosoa ka potlako le ho lokolloa ka 2C ea hona joale e phahameng.Tlas'a tjhaja e khethehileng, betri e ka tjhaja ka botlalo nakong ea metsotso ea 1.5 ea ho tjhaja 1.5C, 'me hona joale ea ho qala e ka fihla ho 2C, empa betri ea lead-acid ha e na ts'ebetso e joalo.
4. Ts'ebetso e ntle ea mocheso
Thempereichara ea tlhōrō ea lithium iron phosphate e ka fihla ho 350 ° C -500 ° C ha lithium manganate le lithium cobaltate li pota-potile 200 ° C feela. Mefuta e mengata ea mocheso oa mocheso (-20C-+75C), e nang le khanyetso e phahameng ea mocheso, lithium iron phosphate. tlhoro ea mocheso oa motlakase e ka fihla ho 350 °C-500 °C, ha lithium manganate le lithium cobalt oxide feela ka 200 °C.
5. Lifepo4 betri Bokhoni bo phahameng
E na le matla a maholo ho feta libeteri tse tloaelehileng (lead-acid, joalo-joalo).Matla a monomer ke 5AH-1000AH.
6. Ha ho phello ea mohopolo
Libetri tse nchafalitsoeng li sebetsa tlas'a maemo ao hangata a sa tsoeng ka botlalo, 'me matla a tla oela kapele ka tlase ho matla a lekantsoeng.Ketsahalo ena e bitsoa "memory effect".Mehopolo e kang nickel-metal hydride le nickel-cadmium libeteri, empa betri ea lifepo4 ha e na ketsahalo ena, ho sa tsotellehe hore na betri e boemong bofe, e ka sebelisoa ka tefiso, ha ho hlokahale ho ntša le ho tsosolosa.7.Betri ea lifepo4 e bobebe
Betri ea lifepo4 ea matla a tšoanang ke 2/3 ea bophahamo ba betri ea asiti ea lead, 'me boima ke 1/3 ea betri ea asiti ea lead.
8. Lifepo4 libeteriba baballang tikoloho
Betri ka kakaretso e nkuoa e se na litšepe tse boima le litšepe tse sa tloaelehang (libetri tsa Ni-MH li hloka litšepe tse sa tloaelehang), tse se nang chefo (tse netefalitsoeng ke SGS), e sa silafatsang, ho latela melao ea RoHS ea Europe, ke setifikeiti sa betri se setala se felletseng. .Ka hona, lebaka leo ka lona libetri tsa lithium li ratoang ke indasteri ke haholo-holo ho nahanela tikoloho.Ka hona, betri e kenyelelitsoe morerong oa naha oa "863" oa nts'etsopele ea theknoloji e phahameng nakong ea "Leano la Lilemo tse Hlano" 'me e fetohile morero oa naha oa bohlokoa oa ts'ehetso le khothatso.Ka ho kena ha China ho WTO, palo ea thepa e romelloang kantle ho naha ea libaesekele tsa motlakase Chaena e tla eketseha ka potlako, ’me libaesekele tsa motlakase tse kenang Europe le United States li hlokoa hore li kenngoe libeteri tse sa silafatsang.Ts'ebetso ea betri ea lithium-ion e itšetlehile haholo ka lisebelisoa tse ntle le tse mpe.Lithium iron phosphate ke thepa ea betri ea lithium e hlahileng lilemong tsa morao tjena.Ts'ebetso ea eona ea polokeho le bophelo ba potoloho ha e bapisoe le lisebelisoa tse ling.Lipontšo tsa bohlokoa ka ho fetisisa tsa tekheniki tsa betri.Betri ea Lifepo4 e na le melemo ea ho se chefo, ho se silafatse, ts'ebetso e ntle ea polokeho, mefuta e mengata ea lisebelisoa tse tala, litheko tse tlase le bophelo bo bolelele.Ke thepa e loketseng ea cathode bakeng sa moloko o mocha oalibeteri tsa lithium-ion.