Cov Lus Qhia luv luv ntawm Lithium Hlau Phosphate Roj Teeb

1. Cov ntsiab lus ntawmlithium iron phosphate battery

Lub lithium iron phosphate battery yog hais txog lithium ion roj teeb siv lithium iron phosphate raws li cov khoom siv tau zoo.

Muaj ntau cov ntaub ntawv cathode rau cov roj teeb lithium-ion, feem ntau yog lithium cobaltate, lithium manganate, lithium nickelate, cov ntaub ntawv ternary, lithium iron phosphate, etc. Ntawm lawv, lithium cobalt oxide tam sim no siv los ua cov khoom siv cathode rau feem coob ntawm lithium-ion roj teeb, thaum lwm cov ntaub ntawv cathode tam sim no tsis yog huab hwm coj tsim ntawm kev ua lag luam rau ntau yam laj thawj. Lithium iron phosphate kuj tseem yog ib qho ntawm lithium-ion roj teeb. Los ntawm cov ntsiab cai ntawm cov ntaub ntawv, lithium hlau phosphate kuj tseem muaj txheej txheem sib txawv / deintercalation. Lub hauv paus ntsiab lus no zoo ib yam nkaus li lithium cobalt oxide thiab lithium manganate.

Lithium iron phosphate yog maj mam nkag mus rau lithium ion fais fab roj teeb ua lag luam vim qhov zoo ntawm kev nyab xeeb, kev ua lub neej muaj txiaj ntsig, thiab cov nqi khoom siv.

2. Cov khoom siv lithium iron phosphate cathode

Xyoo 1997, AKPadhi qhia thawj zaug tias lithium iron phosphate (LiFePO4) muaj qhov ua haujlwm ntawm deintercalating lithium. Cov khoom siv no muaj olivine-hom phosphate-based lithium intercalation khoom, LiMPO4 (M: Mn, Fe, Co, Ni), thiab tau dhau los ua cov khoom lag luam cathode zoo rau lithium ion roj teeb. Lithium iron phosphate ua cov khoom siv hluav taws xob zoo rau cov roj ntsha lithium ion muaj cov tshuab hluav taws xob zoo, lub sijhawm them thiab tawm ntawm lub platform yog qhov ruaj khov, thiab cov qauv nyob ruaj khov thaum lub sijhawm them thiab tawm txheej txheem. Nyob rau tib lub sijhawm, cov khoom siv tsis muaj tshuaj lom, tsis muaj kuab lom, muaj kev nyab xeeb zoo, tuaj yeem siv rau hauv qhov chaw sov, thiab muaj cov khoom siv ntau ntawm cov khoom siv. Tam sim no yog qhov chaw kub siab hauv kev lag luam roj teeb rau kev txhim kho thiab tshawb fawb.

Cov khoom no muaj cov qauv siv lead ua qhia hauv daim duab saum toj no.

Kev siv hluav taws xob ntau: 2.5 ~ 3.6V, lub platform yog li 3.3V, uas yog qis dua 3.7V lithium cobalt oxide roj teeb.

Vim tias qhov tsis zoo ntawm cov khoom siv, nws yog qhov yuav tsum tau tso tseg cov khoom siv cov pa roj carbon monoxide lossis cov hlau xaim hluav taws xob nkag mus rau cov roj ntsha lithium iron phosphate particles, lossis txheej txheej saum npoo ntawm cov roj ntsha lithium iron phosphate hais nrog cov khoom siv carbon conductive los txhim kho cov hluav taws xob conductivity ntawm khoom siv; lossis doping nrog ions hlau txhawm rau txhim kho Kev Coj Ua. Qhov ntom ntom ntom ntawm cov khoom siv yog tsawg, thiab lub ntim tshwj xeeb muaj peev xwm ntawm cov roj teeb tsawg, tsuas yog 180Wh / L (lithium cobalt oxide tuaj yeem ntau dua 400Wh / L). Hauv thaj teb ntawm cov roj teeb me me, tib lub roj teeb muaj tsawg dua ib nrab ntawm cov khoom siv roj teeb uas twb muaj lawm.

3. Lithium iron phosphate battery thiab nws qhov zoo thiab qhov tsis zoo

Qhov zoo ntawm lithium hlau phosphate:

1. Kev Nyab Xeeb. Qhov kev nyab xeeb kev ua haujlwm ntawm cov roj ntsha lithium iron phosphate yog qhov zoo tshaj plaws ntawm txhua yam khoom siv tam sim no. Yog lawm, nws muaj kev ruaj ntseg zoo tib yam li lwm phosphates. Yog tias koj siv lithium iron phosphate ua lub roj teeb, koj yuav tsum tsis txhob txhawj txog qhov teeb meem tawg.

2. Muaj kev ruaj khov. Nrog rau kev ua haujlwm kub-them, zoo muaj peev xwm ruaj khov, zoo ntim kev ua haujlwm, thiab lwm yam Qhov no yog qhov loj tshaj, thiab nws yog qhov zoo tshaj plaws ntawm txhua cov ntaub ntawv paub.

3. Kev tiv thaiv ib puag ncig. Cov txheej txheem tag nrho cov khoom siv yog huv thiab tsis muaj kuab lom. Txhua yam ntaub ntawv tsis-mob toxic. Tsis zoo li cobalt yog cov tshuaj lom.

4. Tus nqi pheej yig. Phosphate siv phosphoric acid source, lithium source thiab iron source raws li cov ntaub ntawv, cov ntaub ntawv no pheej yig heev, tsis muaj kev pab cuam kev lag luam thiab cov khoom siv tsawg.

Qhov tsis zoo ntawm lithium iron phosphate:

1. kev coj tsis zoo. Qhov teeb meem no yog nws qhov teeb meem tseem ceeb tshaj plaws. Yog vim li cas vim li cas lithium iron phosphate tsis tau siv dav siv ces lig yog qhov teeb meem loj. Txawm li cas los xij, qhov teeb meem no tam sim no tuaj yeem daws tau txig: nws yog ntxiv C lossis lwm tus neeg sawv cev. Cov ntawv ceeb toom kev sim yuav ncav cuag qhov tshwj xeeb muaj peev xwm ntawm 160mAh / g lossis ntau dua. Cov khoom siv lithium iron phosphate uas tsim los ntawm peb lub tuam txhab tau ntxiv nrog tus neeg saib xyuas thaum lub sijhawm txheej txheem ntau lawm, thiab tsis tas yuav muab ntxiv thaum ua cov roj teeb. Qhov tseeb, cov khoom siv yuav tsum yog: LiFePO4 / C, xws li cov khoom siv sib xyaw.

2. Lub kais ceev ceev yog tsawg. Feem ntau nws tsuas yog ncav cuag 1.3-1.5, thiab lub qes qes qis tuaj yeem hais tias yog qhov kev cuam tshuam loj tshaj plaws ntawm lithium iron phosphate. Qhov luv luv no txiav txim siab tias nws tsis muaj qhov zoo dua hauv cov roj teeb me me xws li roj teeb txawb xov tooj. Txawm hais tias nws muaj tus nqi qis, kev ua haujlwm zoo ntawm kev nyab xeeb, kev ua haujlwm ruaj khov thiab lub voj voog lub sijhawm siab, yog tias lub ntim loj dhau, nws tsuas yog tuaj yeem hloov cov lithium cobalt oxide me me. Qhov luv luv no yuav tsis nrov nyob hauv cov roj teeb hluav taws xob. Yog li no, cov roj ntsha lithium iron phosphate tsuas yog siv los ua cov roj teeb hluav taws xob.

3. Tam sim no, kev tshawb nrhiav thiab kev tsim kho tsis yog qhov tob tob. Cov kev lag luam tam sim no ntawm cov roj ntsha lithium hlau phosphate raws li cov khoom siv cathode tsis zoo. Vim tias nws tau tsim nyob rau hauv ob xyoos dhau los, kev tshawb fawb hauv ntau qhov kev xav tau txuas ntxiv.

4. Lwm yam

Hauv thaj tsam ntawm lub roj teeb hluav taws xob, vim yog cov teeb meem kev nyab xeeb thiab tus nqi siab ntawm lithium cobalt oxide, nws tau hovering sab nraud lub qhov rooj ntawm lub roj teeb hluav taws xob, thiab tsis tau nkag mus rau txhua qhov ntawm cov roj teeb hluav taws xob. Qhov xwm txheej tam sim no yog tias lithium cobaltate thiab lithium manganate tau siv hauv cov khoom me me. Txawm li cas los xij, vim tias lawv muaj qhov tsis xws luag, lawv tsis tau ua lag luam nyob rau hauv ntau. Cov khoom lag luam tsuas yog nyob hauv kev sim cov theem ntawm cov khoom me me. Tam sim no, kev lag luam loj-loj Los kuj tseem muaj qee qhov tsis txaus ntseeg hauv kev ua haujlwm. Hauv thaj teb ntawm cov roj teeb hluav taws xob, phosphoric acid-based zoo electrode cov ntaub ntawv muaj lub neej ntev kev ua haujlwm, kev ua tau zoo ntawm kev nyab xeeb, kev ua haujlwm siab kub, tus nqi qis kawg, thiab kev ua haujlwm kub tsawg thiab kev tawm suab tuaj yeem mus txog qib ntawm lithium cobalt oxide. Nws ua qhov tseem ceeb tshaj plaws cov khoom siv roj teeb hluav taws xob, nws yuav dhau los ua cov roj teeb roj nickel-cadmium txuas ntxiv rau 5 xyoo tom ntej, nws yuav dhau los ua tus neeg sib tw muaj zog ntawm cov kua qaub-roj teeb hauv 10 xyoo tom ntej, thiab nws yuav hloov rau hauv 20 xyoo tom ntej Lead-acid roj teeb tau dhau los ua lub tseem ceeb hloov hluav taws xob, UPS lub zog muab hluav taws xob thiab cov roj fais fab rov qab, thiab ua tus thawj coj ntawm roj teeb theem nrab.

Cov teeb meem tseem ceeb ntawm cov roj ntsha lithium iron phosphate yog qhov muaj peev xwm tsawg, tsim cov nqi tsim khoom, thiab cov txheej txheem nyuaj hauv kev tsim cov roj teeb (sis plawv, nqus, yob thiab lwm cov txheej txheem xav tau kev kho mob tshwj xeeb, ntau lub tuam txhab tsis tuaj yeem tswj nws zoo) tus nqi tsis ruaj khov (yuav tsum muaj cov txheej txheem roj teeb tshwj xeeb) kev sib koom ua ke, uas muaj kev cuam tshuam loj heev los ntawm cov txheej txheem) thiab kev hloov tam sim no ntawm kev siv cov khoom siv hluav taws xob yog kev tsim kho me me, yog li lub roj teeb kuj muaj cov kev xav tau zoo rau lub ntim hluav taws xob ntau. Txij ntawm qhov peev xwm pom, lithium hlau phosphate tsis muaj yav tom ntej. Qee cov roj teeb teb muaj qhov zoo, xws li cov roj teeb hluav taws xob.

Lithium iron phosphate muaj qhov nqus dej tsawg thiab muaj cov nplaim hluav taws loj tshwj xeeb. Nws yog ib qho tsim nyog yuav tau hloov lub thev naus laus zis tsis zoo, thiab qhov ntsuas ntawm npoo ntawm lub roj teeb ncej daim muaj tsawg, yog li lub peev xwm ntawm tib lub roj teeb tsawg dua.

Lub tshuab hluav taws xob kuj tseem xav tau rov tsim cov txheej txheem hluav taws xob uas tsis tsim nyog, thiab nws nyuaj rau nws ua tiav nrog qhov ua tau hluav taws xob uas muaj tam sim no.

Tsis tas li ntawd, vim hais tias kev khiav hauj lwm voltage ntau ntawm lithium iron phosphate battery yog 2.5 txog 3.6V, thiab lub platform yog txog 3.3V, tsis muaj kev tiv thaiv ib puag ncig thiab kev tiv thaiv hluav taws xob, nws nyuaj rau exert nws cov yam ntxwv ntawm cov hluav taws xob hluav taws xob uas twb muaj lawment, thiab ib qho tseem ceeb yog kev koom ua ke kev lag luam.