Tam sim no, muaj ob txoj kev siv roj teeb tseem ceeb hauv tsheb tshiab, lithium hlau phosphate roj teeb thiab lithium ternary roj teeb. Txawm hais tias ob hom roj teeb no sib tw hauv ntau daim ntawv thov, cov kab tseem ceeb yog kev sib tw hauv lub tshav pob ntawm lub zog tshiab, vim qhov no yog qhov loj tshaj plaws lithium roj teeb daim ntawv thov scenario hauv Suav teb. Txij li thaum muaj kev sib tw, yuav tsum muaj kev sib piv. Kev sib piv ntawm cov nqi roj teeb kev ua tau zoo yog nyob ntawm tus nqi ntawm lub tsheb tuaj yeem nqa tawm, thiab los ntawm kev ua haujlwm ntawm lithium ternary roj teeb thiab lithium hlau phosphate roj teeb uas zoo dua, nws yog qhov yuav tsum tau teeb tsa cov xwm txheej, tau txais qhov tsis muaj tseeb ntawm lub roj teeb. ob lub roj teeb los piav qhia. Raws li cov kev sim ntawm cov chaw soj nstuam, cov tuam txhab tsheb tshiab lub zog thiab cov tuam txhab roj teeb hluav taws xob, txawm hais tias muaj qee qhov sib txawv me me ntawm cov kev txwv tshwj xeeb hauv txhua qhov kev sim, kev txiav txim siab ntawm kev ua haujlwm ntawm ob lub roj teeb zoo ib yam. Yog li ntawd, peb coj tus neeg sawv cev parameter rau kev sib piv.
1. BYD rau cov neeg caij tsheb thiab Tesla rau tsheb. Qhov no yog qhov txawv ntawm qhov ntim ntawm ob. Los ntawm kev xav ntawm cov cuab yeej siv tam sim no, lub zog ceev ntawm ternary lithium roj teeb feem ntau yog 200wh / kg, uas yuav ncav cuag 300wh / kg yav tom ntej; thaum lub roj teeb lithium hlau phosphate yog qhov yooj yim hovering ntawm 100-110wh / kg, qee qhov tuaj yeem ncav cuag 130-150wh / kg, tab sis nws nyuaj heev rau kev tawg ntawm 200wh / kg. Yog li ntawd, cov khoom siv hluav taws xob ternary muaj peev xwm muab tau ob zaug ntau qhov chaw tshaj lithium hlau phosphate, uas yog qhov tseem ceeb heev rau cov tsheb uas muaj qhov chaw tsawg. Tesla tsim ternary lithium roj teeb, BYD tsim cov roj teeb lithium hlau phosphate, yog li nws tau hais tias "BYD yog qhov kev xaiv ntawm cov neeg caij tsheb, Tesla yog qhov kev xaiv ntawm cov neeg nrog caij tsheb".
2. Vim tias lub zog ceev ceev thiab qhov hnyav tsawg, lub zog tshiab lub tsheb nrog ternary lithium roj teeb siv lub zog tsawg, yog li nws muaj kev ceev ceev thiab muaj zog endurance. Yog li ntawd, lub tsheb tuaj yeem khiav mus deb dua nrog ternary lithium roj teeb, thaum lub lithium hlau phosphate tshiab lub zog tsheb yog siv nyob rau hauv lub nroog tsheb npav tam sim no, vim hais tias ib-lub sij hawm endurance tsis deb, nws xav tau ib tug them pawg nyob rau hauv ib tug luv luv deb. muaj peev xwm them.
3. Tau kawg, cov tub ntxhais ntawm lithium hlau phosphate roj teeb rau cov neeg caij tsheb npav yog raws li kev xav txog kev nyab xeeb. Muaj ntau tshaj li ib lub tsheb hluav taws kub ntawm Tesla. Yog vim li cas yog tias Tesla lub roj teeb pob muaj li ntawm 7000 18650 ternary lithium roj teeb. Yog hais tias muaj ib qho luv luv Circuit Court nyob rau hauv cov roj teeb no los yog tag nrho cov roj teeb pob, yuav muaj hluav taws kub. Nyob rau hauv rooj plaub ntawm kev sib tsoo hnyav, qhov luv luv yuav ua rau hluav taws. Cov khoom siv ntawm lithium hlau phosphate yuav tsis hlawv nyob rau hauv cov ntaub ntawv ntawm luv luv Circuit Court, thiab nws cov kub tsis kam yog zoo dua li ntawm ternary lithium roj teeb.
4. Txawm hais tias lub roj teeb lithium hlau phosphate tiv taus qhov kub thiab txias, nws qhov kev ua haujlwm kub qis yog qhov zoo dua. Nws yog txoj hauv kev tseem ceeb ntawm kev tsim cov roj teeb lithium kub tsawg. Ntawm - 20 degree C, lithium hlau phosphate roj teeb tuaj yeem tso tawm 70.14% ntawm nws lub peev xwm, thaum lub roj teeb lithium hlau phosphate tsuas tuaj yeem tso tawm 54.94% ntawm nws lub peev xwm. Ntxiv mus, lub tso tawm platform ntawm lithium hlau phosphate roj teeb yog ntau dua li qhov voltage platform ntawm lithium hlau phosphate roj teeb Nws txav ceev.
5. Them efficiency, ternary lithium roj teeb yog siab dua. Txoj kev txwv tam sim no thiab voltage limiting txoj kev yog siv rau lithium roj teeb them, uas yog, tas li them tam sim no yog nqa tawm nyob rau hauv thawj theem, thaum tam sim no loj thiab efficiency siab. Thaum qhov kev them nqi tas mus li mus txog qhov voltage, nws nkag mus rau theem thib ob ntawm kev them nyiaj tas li. Lub sijhawm no, tam sim no me me thiab qhov ua tau zoo yog tsawg. Yog li ntawd, txhawm rau ntsuas lawv cov kev them nqi hluav taws xob, qhov piv ntawm qhov tam sim no them lub peev xwm mus rau tag nrho cov roj teeb muaj peev xwm hu ua qhov piv txwv tam sim no. Cov ntaub ntawv sim qhia tias qhov sib txawv ntawm lawv tsis loj thaum them qis dua 10C, tab sis qhov kev ncua deb yuav qhib thaum them tshaj 10C. Thaum them nyiaj ntawm 20c, qhov sib piv tam sim no ntawm ternary lithium roj teeb yog 52.75%, thiab cov roj teeb lithium hlau phosphate yog 10.08%, qhov qub yog 5 npaug ntawm tom kawg.
6. Hais txog lub neej voj voog, lub lithium hlau phosphate roj teeb zoo dua lithium ternary roj teeb. Lub neej theoretical lub neej ntawm lithium ternary roj teeb yog 2000 zaug, tab sis lub peev xwm poob mus rau 60% thaum nws mus txog 1000 cycles. Txawm tias qhov zoo tshaj plaws hom Tesla hauv kev lag luam tsuas tuaj yeem tswj tau 70% ntawm lub zog tom qab 3000 lub voj voog, thaum lub roj teeb lithium hlau phosphate muaj 80% ntawm lub peev xwm tom qab tib lub voj voog.
Los ntawm kev sib piv ntawm 6 qhov saum toj no, nws tuaj yeem txiav txim siab tias qhov zoo sib xws ntawm ob tuaj yeem pab teb cov lus nug uas yog qhov zoo tshaj plaws: kev nyab xeeb, lub neej ntev thiab kub tsis kam ntawm lithium hlau phosphate roj teeb; lub teeb yuag, siab them efficiency thiab kub tsis kam ntawm lithium hlau phosphate roj teeb; kev hloov pauv ntawm ob vim qhov sib txawv ntawm lub sijhawm thiab qhov chaw yog vim li cas rau kev sib koom ua ke ntawm ob tug txiv neej.