Tesla tab tom ua ntawv patent rau NMC hlwb tshiab. Ntau lab kilometers thiab tsawg degradation

Tesla Canada tau thov rau lub hlwb tshiab nrog NMC (Nickel-Manganese-Cobalt) cathodes. Nws zoo li cov no yog tib lub ntsiab lus uas Jeff Dunn lub chaw sim tsim rau cov chaw tsim khoom, thiab qhov ntawd tso cai rau nws mus ncig ntau lab mais nrog qhov hnav thiab tsim kua muag tsawg.

Tesla yuav txav los ntawm NCA rau NMC?

Tam sim no, Tesla siv lithium-ion hlwb nrog NCA cathodes, uas yog, npib tsib xee-cobalt-aluminium, nrog cov ntsiab lus cobalt tsawg dua 10 feem pua, tsawg kawg hauv Tesla Model 3. Qhov no yog qhov tshwm sim hauv nws tus kheej, vim tias niaj hnub zoo tshaj plaws. cov hlwb muaj NMC811 cathodes uas muaj 10 feem pua cobalt siv - tab sis lawv tuaj yeem ua haujlwm qeeb, tshem tawm NMC622 cov ntsiab lus.

> 2170 (21700) hlwb hauv Tesla 3 roj teeb zoo dua NMC 811 hauv _future_

Raws li Elon Musk tau cog lus tseg, Tesla niaj hnub yuav tsum taug kev los ntawm 0,48 mus rau 0,8 lab mais ntawm lub roj teeb. Nyob rau yav tom ntej, txawm li cas los xij, nws xav ua tiav 1,6 lab mais ntawm lub roj teeb lub zog, ib yam dab tsi uas Tesla Model 3 lub cev thiab lub zog hluav taws xob yuav tsum txhawb nqa.

Thiab ntawm no nws tau txais kev pab los ntawm kev ua tiav ntawm Jeff Dunn lub chaw kuaj mob, uas ua haujlwm rau Tesla ib ntus thiab uas nyob rau lub Cuaj Hli 2019 khav theeb cov tshuaj muaj pes tsawg leeg ntawm cov electrolytes ntawm lithium-ion hlwb nrog NMC532 cathodes.

Vim yog siv cov "ib leeg siv lead ua" cathode thiab electrolyte nrog tam sim no siv additives enriched nrog dioxazolones thiab nitriles ntawm ib ester ntawm sulfite, nyob ntawm seb muaj pes tsawg leeg ntawm cov electrolyte (qhov chaw), nws muaj peev xwm ua tau raws li nram no:

qeeb cell degeneration vim inhibited kev loj hlob ntawm passivation txheej (SEI), uas khi lithium ions, uas yog lub luag hauj lwm ncaj qha rau lub peev xwm,
ntau dua cell efficiency piv rau kub.

A) microscopic duab ntawm NMC 532 hmoov B) microscopic duab ntawm lub electrode nto tom qab compression, C) ib qho ntawm cov kuaj hlwb 402035 nyob rau hauv ib lub hnab ntawm ib tug Canadian ob duas npib, DOWN, daim duab ntawm sab laug) degradation ntawm lub hlwb kuaj piv rau keeb kwm ntawm cov qauv cell, DOWN, daim duab ntawm sab xis) cell lifetime piv rau kub thaum them nyiaj (c) Jesse E. Harlow li al. / Journal of the Electrochemical Society

Qhov no tag nrho cov suab nyuaj, tab sis cov teebmeem yog amazing:

70 feem pua muaj peev xwm tom qab 3 lub voj voog ntawm 650 degrees (kwv yees li 40 lab mais),
mus txog 90 feem pua lub zog tom qab 3 lab kilometersYog hais tias lub cell kub tau khaws cia ntawm 20 degrees Celsius thiab kev them nyiaj yog nqa tawm ntawm 1 ° C (1x roj teeb muaj peev xwm, piv txwv li 40 kW nrog lub roj teeb 40 kWh, 100 kW nrog lub roj teeb 100 kWh, thiab lwm yam).

Nws tsis paub yog tias daim ntawv thov patent tseem tos txhais tau tias Tesla yuav hloov NCA rau NCM. Txog tam sim no, nws tau hais tsis raug cai tias NCM lithium-ion hlwb yuav tsum tshwm sim hauv cov qauv ua hauv Suav teb.

> Asphalt (!) yuav ua rau kom muaj peev xwm thiab ua kom lub zog ntawm cov roj teeb lithium-ion.

Txawm li cas los xij, nws muaj kev nyab xeeb los hais tias Californian cov chaw tsim khoom txaus siab muab nws cov patents. Los ntawm kev tshaj tawm cov ntaub ntawv ntawm cov khoom siv hluav taws xob tshiab, nws yuav xav ua kom lub ntiaj teb ua haujlwm nrawm ntawm cov lithium cell tom ntej.

Nov yog Tesla daim ntawv thov patent tag nrho (download PDF NO):

Nco tseg los ntawm cov neeg kho ntawm www.elektrowoz.pl: thaum tsim lub ntsiab lus no, peb xav tias kev tsim lub tsheb hluav taws xob Polish yuav kim heev. Peb nrhiav tsis tau ib qho kev hais txog dioxazolones thiab sulfite ester nitriles ntawm Polish Internet. Qhov no txhais tau tias tej zaum tsis muaj neeg nyob hauv tebchaws Poland uas tuaj yeem nkag siab txog daim ntawv thov patent no thiab nws cov lus xaus. Peb muaj kaum ob PhDs hauv kev sau ntawv, kev lag luam, philology thiab keeb kwm, tab sis kev vam meej tiag tiag tau tshwm sim rau lwm qhov, ntawm no, ua ntej peb lub qhov muag.

Qhov no yuav txaus siab rau koj: