Penn: Tili ndi njira yofulumira kwambiri yolipiritsa maselo a LiFePO4: + 2 400 km / h. Kuwonongeka? Mileage 3,2 miliyoni Km!

Asayansi ochokera ku yunivesite ya Pennsylvania State apeza njira yopangira mabatire othamanga kwambiri kutengera maselo a lithiamu iron phosphate (LFP, LiFePO₄). Chifukwa cha mapangidwe oyenera, amatha kubisala mtunda wa makilomita 400 mumphindi 10 (+ 2 km / h), zomwe zimafanana ndi mphamvu yopangira pafupifupi 400 C.

Maselo a LFP ngati mwayi wamagalimoto amagetsi otsika mtengo komanso ogwira mtima

Zamkatimu

• Maselo a LFP ngati mwayi wamagalimoto amagetsi otsika mtengo komanso ogwira mtima
  • Nissan Leaf II ngati Porsche: mathamangitsidwe abwino kwambiri, kuthamanga kwambiri

Talemba nthawi zambiri za ubwino wa maselo a LFP: ndi otsika mtengo kusiyana ndi NCA/NCM - ndipo amalonjeza bwino zikafika pakuchepetsa mitengo - amakhala otetezeka, amatsitsa pang'onopang'ono, ndipo amalola kuti chiwongolero chonse chiwonongeke popanda kukhudza mphamvu. kunyozeka. Zoipa zawo ndizochepa mphamvu zenizeni komanso kulephera kufulumizitsa kulipiritsa. Zikuwoneka kuti zambiri zachitika posachedwa poyambirira (ulalo pansipa) ndi wachiwiri (zambiri za nkhaniyi).

> Guoxuan: Tafika pa 0,212 kWh / kg m'maselo athu a LFP, timapita patsogolo. Awa ndi masamba a NCA / NCM!

Ofufuza aku Pennsylvania apeza njira kuwonjezeka kwa mphamvu yotsatsira batire kutengera ma cell a LFP... Chabwino, iwo anakulunga ma cell mu chojambula chopyapyala cha nickel cholumikizidwa ndi imodzi mwamagetsi a batri. Kuchapira kukayamba, mphamvu yamagetsi imayenda kudzera mwa iwo. Chojambulacho chimatenthetsa ma cell (mkati mwa batire) mpaka madigiri 60 Celsius. ndipo pambuyo pake m'pamene njira yowonjezeretsa mphamvu imayamba.

Popeza kutentha sikuchokera mkati mwa selo, koma ndi zotsatira za chowotcha chowonjezera, palibe vuto lowoneka ndi kukula kwa lithiamu dendrite.

Ofufuzawo akuti ndi maselo otenthawa adzatha kudzaza Kuyenda kwa ma kilomita 400 mphindi 10 (+2 400 km / h)... Sangadzitamande ndi mphamvu zenizeni zolipirira, koma poganizira kuti mphamvu ya batri yomwe ikufunidwa pakadali pano iyenera kufanana ndi ma kilomita 400-500, Kuthamanga kuyenera kukhala 4,8-6 C. Ikatulutsa - ikadali ndi ma cell otentha - imalonjeza kuti ipanga mphamvu ya 300kW kuchokera ku batire ya 40kWh (7,5 ° C, gwero).

Kuthamanga kwamphamvu kwambiri kuyenera kukhala kotetezeka kwathunthu kwa ma cell omwe akufotokozedwa. Asayansi amalonjeza mpaka 3,2 miliyoni kilomita, ndiye kuti, ndi maulendo apamwamba (400-500 km) moyo wautumiki 6-400 wozungulira wathunthu.

Nissan Leaf II ngati Porsche: mathamangitsidwe abwino kwambiri, kuthamanga kwambiri

Kuti timvetse zomwe magawo onsewa akutanthauza, tiyeni tiyike pagalimoto yoyamba pamphepete. Tangoganizani Nissan Leafa II yokhala ndi batri pamwambapa... Ndi mphamvu [yonse] ya 40 kWh, batire idzatha kupereka mphamvu zokwana 300 kW (408 hp), zomwe, ngakhale zitatayika, zimapereka pafupifupi 250 kW (340 hp) pamawilo.

Galimoto yoteroyo, ngati ikanatha kuyendetsa bwino, ikanakhala ntchito yofanana ndi Porsche Boxster ndipo idzalola kubwezeretsanso mphamvu zamagetsi mpaka pafupifupi 240 kW. Ndipo batire yomwe imatenthedwa poyendetsa galimoto ingakhale yopindulitsa, osati cholepheretsa, chifukwa sichidzafunika kutenthedwanso kuti igwire bwino ntchito.

Chithunzi chodziwika: fanizo, kuyesa kwa maselo a LFP (pa) Jim Conner / YouTube

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