Vim li cas Lithium Iron Phosphate (LiFePO4) roj teeb tsim nyog rau kev lag luam thiab kev lag luam.

Yog vim li cas lithium hlau phosphate (LiFePO₄) cov roj teeb tsim nyog rau kev lag luam thiab kev lag luam.

Ob peb xyoos nyob rau hauv lub zog sector feem ntau yog suav tias yog ib ntsais muag ntawm ib lub qhov muag. Qhov no ua rau kev hloov pauv sai ntawm cov roj teeb cia kev lag luam hauv xyoo tas los no tseem ceeb dua. Lub roj teeb cia toj roob hauv pes hauv hluav taws xob yog txav deb ntawm NiCd; nws tau hloov mus rau lithium - ion roj teeb, nrog rau cov hmoov txhuas - acid. Rau ntau daim ntawv thov, lithium - ion tau ua pov thawj zoo dua rau lwm cov chemistry nrog rau lub zog thiab lub zog ceev, lub voj voog thiab daim ntawv qhia hnub, thiab tus nqi. Lub lithium - ion sib sib zog nqus tawm lub voj voog lub neej, lub zog thiab lub zog ceev, thiab lwm yam khoom muaj pov thawj zoo dua lwm hom roj teeb. Nrog rau kev txo nqi sai, qhov no tau ua rau muaj kev xa tawm ntau ntxiv ntawm lithium - ion. (IRENA, 2015).

Lithium - Ion yog qeb uas suav nrog Lithium - Mange676 Mangion - Cawv , lithium hlau phosphate hlwb kuj ruaj khov thiab muaj kev nyab xeeb.Lithium - hlau - phosphate (LiFePO4) hlwb feem ntau tau txais raws li qhov zoo tshaj plaws lithium - ion hom rau kev lag luam.

• Lithium Hlau Phosphate (LiFePO⁴) cov hlwb feem ntau tau txais raws li qhov zoo tshaj plaws lithium - ion roj teeb rau kev lag luam.

• LiFePO_⁴muaj yuav luag tsis muaj tshuaj lom los yog cov khoom tsim kev puas tsuaj thiab feem ntau tsis suav tias yog cov pov tseg phom sij.

• NiCd hlwb muaj cadmium, uas paub tias carcinogen. Lead - acid roj teeb muaj cov hmoov txhuas, uas tuaj yeem cuam tshuam rau kev loj hlob ntawm lub hlwb thiab lub cev. Muaj NiCd roj teeb raug cais raws li kev phom sij.

• LiFePO_⁴yog cov cuab yeej muaj kev nyab xeeb uas yuav tsis ntes hluav taws lossis tawg nrog overcharging, thiab tsis tsim cov roj hluav taws xob nyob rau hauv ib qho xwm txheej.

• LiFePO_⁴hnyav ib feem peb mus rau ib lub quarter ntawm qhov hnyav ntawm cov hlau lead - acid roj teeb ntawm lub zog sib npaug.

• LiFePO⁴tuaj yeem xa ntau tshaj 5000 qhov sib sib zog nqus tawm mus, piv rau ib ncig ntawm 300 txog 800 rau kaum - xyoo tsim - lub neej VRLA, lossis 1500 mus rau 50 % qhov tob ntawm kev tso tawm rau 20 xyoo tsim - lub neej VRLA.

• Hauv kev tso tawm ntau dua - tus nqi thov, LiFePO_⁴tuaj yeem tsim tau ob npaug ntawm cov peev txheej siv tau zoo sib xws ntawm cov khoom siv lead ua - acid roj teeb.

• LiFePO_⁴muaj lub tiaj tus voltage tawm nkhaus, xa me me kom tsis muaj "voltage sag" (raws li cov hlau lead - acid).

• LiFePO_⁴muaj qhov tso tawm ntau dua - tus nqi peev xwm (10C txuas ntxiv, 20C mem tes tawm).

• LiFePO_⁴lees txais cov nqi txuas ntxiv siab dua - mus txog 3C, tso cai rau lub sijhawm luv luv dua, piv rau VRLA uas muaj 0.1C rau 0.25C pom zoo tus nqi them.

• Tsis zoo li txhuas - roj teeb kua qaub, LiFePO4 tuaj yeem tso rau hauv ib feem ntawm lub xeev tawm mus ntev yam tsis ua rau muaj peev xwm txo qis mus tas li.
  LiFePO_⁴tuaj yeem muaj tus kheej qis - tawm tus nqi (tsis zoo li cov hmoov txhuas - acid uas yuav mus ncaj heev yog tias sab laug zaum ntev).

• LiFePO_⁴tsis txhob raug kev txom nyem los ntawm thermal khiav. VRLA tus nqi thiab qhov ntsuas kub yuav tsum raug txwv kom tsis txhob muaj cua sov.

• LiFePO_⁴tuaj yeem siv rau hauv qhov kub thiab txias, mus txog 65 oC yam tsis muaj kev ua haujlwm tseem ceeb lossis kev pabcuam - lub neej degradation. Rau txhua txhua 10 oC nce hauv kev ua haujlwm kub, kev pabcuam - lub neej ntawm VRLA roj teeb ib nrab.

• LiFePO_⁴yog tus saib xyuas - dawb rau lub neej ntawm lub roj teeb. VRLA roj teeb yuav tsum tau kuaj txhua xyoo tso zis, impedance los yog conductance xeem.

• LiFePO_⁴tuaj yeem ua haujlwm hauv txhua qhov kev taw qhia, suav nrog inverted. Ntau VRLA roj teeb yuav tsum tau taw qhia vertically, qee qhov kab rov tav.

• LiFePO_⁴tsis muaj cov hlau hnyav hnyav xws li txhuas, cadmium, lossis cov kua qaub corrosive lossis alkali electrolyte.
  LiFePO_⁴cov roj teeb yog cov roj teeb uas muaj kev nyab xeeb tshaj plaws nyob rau niaj hnub no.

• LiFePO_⁴muaj yuav luag ob npaug ntawm lub zog ceev dua NiCd.

• LiFePO_⁴hnyav li ib feem peb mus rau ib nrab ntawm qhov hnyav ntawm NiCd roj teeb ntawm lub zog sib npaug.

• LiFePO_⁴muaj tus kheej qis - tawm; tsawg dua ib nrab ntawm NiCd. Sab laug uncharged, LiFePO_⁴cov hlwb tuaj yeem khaws lawv cov nqi mus txog kaum xyoo.

• Ntau dua cell voltage ntawm LiFePO_⁴(3.6V) txhais tau tias tsawg dua cov hlwb thiab cov kev sib txuas thiab cov khoom siv hluav taws xob xav tau rau cov roj teeb hluav taws xob siab. Ib LiFePO_⁴cell tuaj yeem hloov tau peb lub hlwb NiCd, uas muaj lub xov tooj ntawm tes tsuas yog 1.2V. (110V NiCd=87 rau 91 txuas, LiFePO_⁴yuav muaj 33 lossis 34 txuas).

• LiFePO_⁴tsis muaj cov kua electrolyte uas txhais tau hais tias lawv tiv thaiv los ntawm kev xau. NiCd muaj cov kua poov tshuaj hydroxide uas, yog tias xau, yog corrosive heev thiab yog li lom nws yuav ua rau tuag taus yog tias noj.

• Hauv kev tso tawm ntau dua daim ntawv thov LiFePO_⁴tuaj yeem tsim ob lub peev xwm siv tau zoo sib xws ntawm NiCd roj teeb

• Flat voltage tawm nkhaus txhais tau hais tias lub zog siab tshaj plaws muaj kom txog thaum tag nrho tawm (tsis muaj "voltage sag" xws li NiCd roj teeb)

• LiFePO_⁴hlwb tuaj yeem xa tawm tus nqi siab heev, 10C txuas ntxiv, 20C mem tes tawm.

• LiFePO_⁴lees txais ntau dua tus nqi - txog 3C=muaj peev xwm them rov qab sai dua

• Tsis zoo li NiCd roj teeb, LiFePO_⁴tuaj yeem tso rau hauv lub xeev tso tawm tob rau lub sijhawm ntev yam tsis ua rau txo qis ntawm lub peev xwm mus tas li.

• LiFePO_⁴tsis txhob raug kev txom nyem los ntawm "thermal runaway"

• Nws tuaj yeem siv tau zoo nyob rau hauv qhov kub thiab txias, txog li 65 oC yam tsis muaj kev cuam tshuam loj heev. NiCd tsuas tuaj yeem ua haujlwm muaj kev ntseeg siab txog li 35 txog 40oC.

• LiFePO_⁴yog 100% txij nkawm - pub dawb rau lub neej ntawm lub roj teeb. NiCd yuav tsum tau khaws cia (hloov electrolyte thiab topped) tsawg kawg ib xyoos ib zaug, qee cov tuam txhab NiCd pom zoo kho ib zaug txhua rau lub hlis.

• LiFePO_⁴tuaj yeem ua haujlwm hauv txhua qhov kev taw qhia, suav nrog inverted.

• LiFePO_⁴tsis muaj cov hlau hnyav hnyav xws li txhuas, cadmium, thiab tsis muaj cov corrosive acids lossis alkalis.

• LiFePO_⁴cov roj teeb yog cov roj teeb uas muaj kev nyab xeeb tshaj plaws nyob rau niaj hnub no.

• Phosphate raws li thev naus laus zis muaj qhov zoo tshaj thermal thiab tshuaj lom neeg ruaj khov uas muab cov yam ntxwv kev nyab xeeb zoo dua li cov lithium - ion thev naus laus zis ua nrog lwm cov ntaub ntawv cathode. Lithium phosphate hlwb yog incombustible nyob rau hauv cov kev tshwm sim ntawm mishandling thaum lub sij hawm them los yog tso tawm, lawv yog ruaj khov nyob rau hauv overcharge los yog luv luv Circuit Court tej yam kev mob thiab lawv muaj peev xwm tiv taus kub yam tsis muaj decomposing. Thaum muaj kev tsim txom tshwm sim, cov khoom siv phosphate raws li cathode yuav tsis hlawv thiab tsis ua rau thermal runaway.

• Phosphate chemistry tseem muaj lub neej voj voog ntev dua. Cov kev tsim kho tsis ntev los no tau tsim ntau yam tshiab ntawm ib puag ncig tus phooj ywg cathode active cov ntaub ntawv raws li lithinated hloov hlau phosphates rau lithium - ion daim ntaub ntawv.

• Doping nrog cov hlau hloov pauv hloov qhov xwm txheej ntawm cov ntaub ntawv nquag thiab ua kom lub zog sab hauv ntawm lub cell kom txo tau.
  Kev ua haujlwm ntawm lub xovtooj ntawm tes kuj tuaj yeem "tso" los ntawm kev hloov pauv tus kheej ntawm cov hlau hloov pauv. Qhov no tso cai rau qhov voltage thiab lub peev xwm tshwj xeeb ntawm cov khoom siv no kom tswj tau. Cell voltages nyob rau hauv qhov ntau ntawm 2.1 mus rau 5 Volts yog ua tau.

• Phosphates txo qhov tsis zoo ntawm cobalt chemistry, tshwj xeeb tshaj yog tus nqi, kev nyab xeeb thiab ib puag ncig yam ntxwv. Ib zaug ntxiv qhov kev lag luam tawm yog txo qis ntawm 14 % nyob rau hauv lub zog ceev, tab sis ntau zog variants yog raug tshawb nrhiav.

• Vim muaj kev nyab xeeb zoo tshaj plaws ntawm phosphate hlwb, LiFePO_⁴cov roj teeb muaj ntau dua tolarger roj teeb muaj peev xwm.

• IEC 62619: 2017 qhia txog cov kev cai thiab kev sim rau kev ua haujlwm nyab xeeb ntawm cov lithium thib ob thiab cov roj teeb uas siv hauv kev lag luam suav nrog cov ntawv thov nyob ruaj khov.

• Saib rau impedance - matched, hwm, LiFePO4 hlwb, nrog ntawv pov thawj los qhia tias lawv tau raug hom - kuaj raws li IEC 62619: 2017

• Rau ntau daim ntawv thov kev lag luam thiab kev lag luam, lithium roj teeb tswj system (BMS) yog qhov tseem ceeb raws li cov lithium hlwb.

• Ib txoj hauv kev yooj yim los pib ntsuas qhov zoo ntawm BMS yog los ntawm kev tshuaj xyuas nws cov kev khiav hauj lwm phau ntawv thiab cov chaw siv.