Kev sib tham: Vim li cas ho tsis lithium hlau phosphate?

Tesla lub tsheb fais fab puas siv tau? Vim li cas ho tsis siv lithium hlau phosphate roj teeb? Cov lus teb hauv qab no yog los ntawm cov kws paub txog roj teeb lithium.

Raws li ib tug engineer ua hauj lwm nyob rau hauv ib lub koom haum tshawb fawb, thaum kawg kuv muaj sij hawm los hais ob peb lo lus hais txog kuv daim teb.

Ua ntej tshaj plaws, txhawm rau kho lub tswv yim no, lithium roj teeb yog lub npe luv ntawm qhov peb feem ntau hu ua lithium roj teeb. Qhov koj hu ua ferroelectricity yog ib hom lithium roj teeb. Nws siv lithium hlau phosphate ua cov ntaub ntawv zoo electrode. Nws yog ib hom lithium roj teeb.

Tam sim no cia peb pib nrog ib qho yooj yim version ntawm nto abstraction:

Tesla siv Panasonic, nrog NCA ua lub zoo electrode, thiab npaj ib tug ua tiav roj teeb tswj system los xyuas kom meej thiab txhim kho efficiency thiab kev nyab xeeb ntawm roj teeb lub lag luam. Txog seb nws puas muaj kev nyab xeeb tiag tiag, qhov no tsis tuaj yeem teb tau. Yog hais tias koj xav tham txog spontaneous combustion, kuv kuj xav hais tias roj av tsheb kuj spontaneously ignite nyob rau hauv lub caij ntuj sov.

Rau cov tsheb hluav taws xob ntshiab, peb txhawj xeeb txog dab tsi? Qhov no tsis nyob deb ntawm kev ntxhov siab, vim tias lub zog ntom ntom uas cov roj teeb tuaj yeem khaws tau tsawg heev. Niaj hnub no, lub zog ceev ntawm lub tsheb roj teeb feem ntau yog 100 txog 150 Wh / kg, thiab lub zog ceev ntawm roj av yog li 10,000. wb / kg. Yog li txawm tias koj nqa ib pawg roj teeb zoo li lub vaub kib, koj tsis tuaj yeem tuav nws. Cia peb luag ntawm yuav ua li cas lub tsheb hluav taws xob khiav tawm ntawm lub zog thaum lub sij hawm them nyiaj txhua hnub.

Qhov tsis muaj zog tshaj plaws ntawm cov cuab yeej siv roj teeb tam sim no yog nws lub zog qis, uas ua rau poob qis dua Moore Txoj Cai. Tsis txhob tham txog khoob lithium, txawm tias lawv lub zog ntom ntom tsis siab txaus, lawv nyob deb ntawm qhov muaj txiaj ntsig…

Lub ntsiab yog vim li cas tsis siv lithium hlau phosphate roj teeb, kuv xav hais tias, muaj peev xwm tsawg thiab tsis muaj zog (lithium hlau phosphate yog me ntsis tsawg dua 3, qis voltage, 3.4V, thiaj li qis zog). Hauv kev siv cov tswv yim, cov khoom siv roj teeb tsheb yog tag nrho ua ke hauv cov kab sib txuas thiab sib txuas, thiab yuav tsum muaj txoj hauv kev sib txuas ua ke txhawm rau txhawm rau nce qhov voltage. Lub sijhawm no, qhov sib xws ntawm cov xov tooj ntawm tes thiab lub peev xwm ntawm cov roj teeb sib txawv tau dhau los ua qhov tseem ceeb, thiab nws tsis yog qhov yuav tsum tau hais tias lub peev xwm tsawg.

Txhawm rau sib piv ntau cov ntaub ntawv zoo, peb yuav tsum qhia cov duab no, uas yog tsib yam tseem ceeb ua haujlwm:

Lub zog, lub neej, tus nqi, kev nyab xeeb thiab lub zog.

Cov ntaub ntawv sib piv yog NMC/NCA triple data/NCA, LCO lithium cobaltate, LFP lithium hlau phosphate thiab LMO lithium manganate. NCA thiab NCM yog cov txheeb ze ze, yog li lawv tau koom nrog ntawm no.

Los ntawm daim duab peb tuaj yeem pom:

Alliance cov txheeb cais

Lub zog yog qhov tsawg tshaj plaws (hmoov tsis muaj peev xwm yog qhov teeb meem, qhov tsis tshua muaj hluav taws xob yog qhov teeb meem ntawm 3.4V, xws li 4.7V lithium NMC spinel). Qhov chaw muaj kev txwv, yog li tsis txhob muab tus nqi thiab tawm qhov nkhaus ntawm no.

Lub hwj chim tsis tshua muaj (qhov kev sim ntawm lithium hlau phosphate 5C tuaj yeem ncav cuag 130mAh / g poob (PHOSTECH tuaj yeem …) Cov pob carbon + nano data multiplier tseem muaj zog heev!

Lub neej thiab kev nyab xeeb ntawm lub neej yog qhov zoo tshaj plaws, uas yog qhov tseem ceeb vim tias nws tau kwv yees tias polyanion PO43-

Tsis tas li ntawd, cov pa oxygen ua ke zoo dua nrog cov electrolyte, uas ua rau qis qis dua. Tsis zoo li cov ntaub ntawv ternary, nws yooj yim dua los tso tawm cov pa npuas thiab lwm yam tshwm sim. Nyob rau hauv cov nqe lus ntawm lifespan, nws yog feem ntau txiav txim siab mus ua 4000 cycles.

Tus nqi yog siab, thiab tus nqi ntawm lithium hlau phosphate yog qhov zoo. Tus nqi yog thib ob tsuas yog LMO lithium manganate (qhov no, huab cua combustion, manganese qhov chaw pheej yig), thiab qhov thib ob sib tw tshaj plaws. Cov khoom siv lithium hlau phosphate, lithium phosphorus kuj pheej yig, tab sis qee cov nqi, ua hmoov, kev kho cua sov thiab cua tub nkeeg, ntau cov txheej txheem yuav tsum ua, ua rau cov ntaub ntawv nqi (kwv yees li 10 w / t hauv Suav teb) tsis tsawg li LMO (6 ~ . 7 w / t), tab sis NMC (13 w / t) tseem pheej yig dua LCO (ntau dua).

Yog vim li cas: Cobalt kim dua nickel, thiab nickel kim dua ferromanganese. Cov khoom siv twg yog siv thiab cov nqi siv dab tsi.

Tom qab ntawd sib piv thiab txheeb xyuas cov ntaub ntawv NCM/NCA hauv qab no

Lub zog yog qhov zoo tshaj plaws (lub tsheb fais fab tsuas yog xav mus ntxiv, qhov no yog qhov tseem ceeb tshaj plaws). Tsis tas li ntawd, nrog rau kev txhim kho cov ntaub ntawv siab nickel NCM, lub zog ceev ntawm cov ntaub ntawv tuaj yeem txhim kho ntxiv.

Lub hwj chim tsis muaj teeb meem (qhov tseeb, rau cov tsheb fais fab, lub zog yog qhov tseem ceeb dua li cov yam ntxwv ntawm lub zog, tab sis rau cov tsheb sib xyaw xws li Toyota Prius, cov yam ntxwv ntawm lub zog yog qhov tseem ceeb dua, tab sis qhov tseeb yog lub zog tsis zoo).