Penn: Peb muaj txoj hauv kev ceev ceev kom them LiFePO4 hlwb: +2 400 km / h. Degradation? Mileage 3,2 lab km!
Txheem
Cov kws tshawb fawb los ntawm Pennsylvania State University tau pom ib txoj hauv kev rau kev them nyiaj sai sai raws li cov lithium hlau phosphate hlwb (LFP, LiFePO4). Ua tsaug rau qhov tsim nyog tsim, lawv tuaj yeem npog qhov kev ncua deb mus txog 400 km hauv 10 feeb (+ 2 km / h), uas sib haum rau lub peev xwm ntawm 400 C.
LFP hlwb ua lub sijhawm rau pheej yig thiab siv tau hluav taws xob tsheb
Cov txheej txheem
- LFP hlwb ua lub sijhawm rau pheej yig thiab siv tau hluav taws xob tsheb
- Nissan Leaf II li Porsche: acceleration zoo heev, super ceev them
Peb tau sau ntau zaus txog cov txiaj ntsig ntawm LFP hlwb: lawv pheej yig dua li NCA / NCM - thiab lawv tuav tau zoo thaum nws los txog rau kev txo nqi ntxiv - lawv muaj kev nyab xeeb dua, qeeb qeeb, thiab tso cai rau tag nrho cov nqi mus ncig yam tsis muaj cuam tshuam qhov muaj peev xwm degradation. Lawv qhov tsis zoo yog qis dua lub zog tshwj xeeb thiab tsis muaj peev xwm ua kom ceev kom them nyiaj. Nws zoo nkaus li tias tsis ntev los no tau tshwm sim nyob rau hauv ob qho tib si thawj (txuas hauv qab no) thiab thib ob (tus so ntawm tsab xov xwm).
> Guoxuan: Peb tau mus txog 0,212 kWh / kg hauv peb lub hlwb LFP, peb mus ntxiv. Cov no yog NCA/NCM sites!
Pennsylvania cov kws tshawb fawb tau pom ib txoj hauv kev nce lub roj teeb them lub zog raws li LFP hlwb... Zoo, lawv qhwv lub hlwb nyob rau hauv ib lub nyias nickel ntawv ci txuas nrog ib qho ntawm cov roj teeb electrodes. Thaum them nyiaj pib, ib qho hluav taws xob tam sim no ntws los ntawm lawv. Cov ntawv ci heats lub hlwb (hauv lub roj teeb) rau 60 degrees Celsius. thiab tsuas yog tom qab ntawd ua cov txheej txheem ntawm kev ntxiv zog pib.
Txij li thaum tshav kub tsis tuaj ntawm sab hauv ntawm lub xov tooj ntawm tes, tab sis yog qhov tshwm sim ntawm lub rhaub dej ntxiv, tsis muaj teeb meem tshwm sim nrog lithium dendrite kev loj hlob.
Cov kws tshawb fawb hais tias nrog cov cell rhuab lawv yuav muaj peev xwm rov ua dua Cruising range ntawm 400 km hauv 10 feeb (+ 2 400 km / h)... Lawv tsis tuaj yeem khav theeb ntawm qhov tshwj xeeb them nqi hluav taws xob, tab sis coj mus rau hauv tus account tias tam sim no xav tau roj teeb muaj peev xwm yuav tsum sib haum mus rau thaj tsam ntawm 400-500 mais, them lub zog yuav tsum yog 4,8-6 C. Thaum tso tawm - tseem nrog cov hlwb kub - lub peev xwm tsim tau 300 kW ntawm lub zog los ntawm 40 kWh roj teeb (7,5 ° C, qhov chaw) tau cog lus.
Kev them nyiaj siab zog yuav tsum muaj kev nyab xeeb tag nrho rau cov hlwb uas tau piav qhia. Cov kws tshawb fawb cog lus mus txog 3,2 lab kilometers, uas yog, nrog rau saum toj no ntau yam (400-500 km) kev pab cuam lub neej 6-400 tag nrho kev khiav hauj lwm mus.
Nissan Leaf II li Porsche: acceleration zoo heev, super ceev them
Yuav kom nkag siab tias tag nrho cov kev ntsuas saum toj no txhais li cas, cia peb teeb tsa lawv mus rau thawj lub tsheb ntawm ntug. Xav txog tej yam Nissan Leafa II nrog lub roj teeb saum toj no... Nrog rau [tag nrho] muaj peev xwm ntawm 40 kWh, lub roj teeb yuav tuaj yeem xa mus txog 300 kW (408 hp) ntawm lub zog, uas, txawm tias poob, muab txog 250 kW (340 hp) ntawm lub log.
Xws li lub tsheb, yog tias nws tsuas muaj peev xwm tswj tau traction, yuav muaj kev ua tau zoo zoo ib yam li Porsche Boxster thiab yuav tso cai ntxiv cov khoom siv hluav taws xob txog li 240 kW. Thiab lub roj teeb uas ua kom sov thaum tsav tsheb yuav yog qhov zoo dua, tsis yog qhov tsis zoo, vim tias nws yuav tsis tas yuav tsum tau rov ua dua kom ua tau zoo tshaj plaws.
Diam duab Discovery: illustrative, testing of LFP cells (at) Jim Conner / YouTube
Qhov no yuav txaus siab rau koj:
