Chifuniro21700 ma cellsinthani18650 maselo?

Popeza Tesla adalengeza kupanga kwa21700mabatire amphamvu ndikuwayika ku Model 3, the21700mphepo yamkuntho ya batri yamphamvu yadutsa.Tesla atangoyamba kumene, Samsung idatulutsanso chatsopano21700 batire.Imanenanso kuti mphamvu ya batire yatsopanoyi ndi yowirikiza kawiri kuposa ya batire yomwe ikupanga pano, ndipo batire yopangidwa ndi batire yatsopanoyo imatha kuyipitsidwa mu batri yomwe ili ndi ma 370 mailosi mkati mwa mphindi 20.Kuyang'ana ndi21700msika wa batri yamagetsi, ams ndi okonzeka.Mapulagi monga XT60 mndandanda kuti angadutse 30A akhala opukutidwa pamsika kwa zaka zoposa khumi ndipo chimagwiritsidwa ntchito magalimoto magetsi, maloboti anzeru, zida zosungira mphamvu, etc. Mu lifiyamu batire ntchito makampani, izo kwambiri anakhulupirira ndi makasitomala.

Monga18650 batire, ndi Tesla21700 batireilinso imodzi mwamabatire a cylindrical lithiamu.Pakati pawo, "21" imatanthawuza batire yokhala ndi mainchesi 21 mm, "70" imatanthawuza kutalika kwa 70mm, ndipo "0" imayimira batire yozungulira.

Tesla amatenga gawo loyamba

Tesla adayambitsa21700 batireosati kutsogolera njira zamakono, koma kwenikweni chifukwa cha kukakamizidwa kwa mtengo.Zogulitsa zolumikizira mwachangu za Ams zimatengera kafukufuku wophatikizana ndimakasitomala ambiri kuti achepetse ndalama kwa makasitomala ndikuwonetsetsa kuti ali abwino.

Kumayambiriro kwa polojekiti ya Model 3, Musk adayika mtengo wa $ 35,000 pagalimoto iyi, koma ngati choyambiriracho.18650 batireikagwiritsidwabe ntchito, padzakhala zotsatira ziwiri, mwina kuonetsetsa kuti moyo wa batri umaposa mtengo, kapena kuonetsetsa kuti mtengowo wachepetsedwa.Kupirira ndikovuta kuvomereza kwa Musk "wosankha".Chifukwa chake funso ndilakuti pali batire yomwe ingachepetse mtengo ndikuwonetsetsa moyo wa batri.Yankho ndilo21700 mabatire.

Ngakhale a18650 batireadathandizira kwambiri kukwera kwa Tesla, Musk mwiniwake wakhala akukayikira za izi.Ponena za21700ndi18650 mabatire, Musk adanena pazama TV: Kuwonekera kwa18650 batirekwathunthu ngozi ya mbiriyakale.Muyezo wa mankhwala oyambirira, tsopano kokha21700 mabatireimatha kukwaniritsa zofunikira za batri pamagalimoto amagetsi.

Akatswiri akatswiri amakhulupirira kuti mphamvu kachulukidwe wa21700-mtundu wa mabatirendi wapamwamba kuposa wodziwika bwino18650-mtundu wa mabatire, ndipo mtengowo udzachepetsedwa pambuyo pogawa magulu.Kusankha kwa21700si chifukwa ntchito yake mtheradi ndi bwino kuposa zitsanzo zina, koma chifukwa cha zonse bwino katundu thupi ndi chuma.

Akuti mphamvu kachulukidwe izi21700 batiredongosolo ndi za 300Wh/kg, amene ali oposa 20% apamwamba kuposa18650 batirekachulukidwe mphamvu ntchito mu choyambirira Model S. Kuchuluka kwa selo kumawonjezeka ndi 35%, pamene mtengo wa dongosolo umachepetsedwa ndi pafupifupi 10%.Musk adati: Izi za21700 mabatirepakadali pano ndi batire yomwe ili ndi mphamvu zambiri komanso yotsika mtengo pakati pa mabatire opangidwa mochuluka.

Ubwino wake ndi wodziwikiratu, koma kuipa kwake ndikoyenera kukhala tcheru

　　21700 batireali ndi zabwino zitatu.Kuchulukitsitsa kwa mphamvu kwa selo limodzi ndi gulu kwasinthidwa kwambiri.Kutenga21700 batireopangidwa ndi Tesla mwachitsanzo, atasintha kuchokera ku18650model ku21700chitsanzo, mphamvu ya batri imatha kufika 3 ~ 4.8Ah, komwe ndi kuwonjezeka kwakukulu kwa 35%.Pambuyo pa gululi, mphamvu yamagetsi ikuwonjezeka ndi 20%.

Chifukwa cha kuchuluka kwa mphamvu zama cell, kuchuluka kwa ma cell a batri ofunikira pansi pa mphamvu yomweyo kumatha kuchepetsedwa ndi 1/3.Ngakhale kuchepetsa zovuta za kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwebulungubukwedwe kanthanthabwa kapabunzeke kapa |Chifukwa cha kuchepa kwa chiwerengero cha ma monomers omwe amagwiritsidwa ntchito komanso kuchepetsa kugwiritsa ntchito zipangizo zina, kulemera kwa mphamvu ya batri yamagetsi kumakonzedwa bwino pansi pa chidziwitso chowonetsetsa mphamvu zomwezo.Pambuyo Samsung SDI anasintha kukhala latsopano la21700 mabatire, zinapezeka kuti kulemera kwa dongosololi kunachepetsedwa ndi 10% poyerekeza ndi batri yamakono.

Popeza kukula kwa selo kukhoza kukulirakulira ndipo mphamvu ya seloyo ingaonjezeke, bwanji osagwiritsa ntchito selo yokhala ndi kukula kwakukulu ndi mphamvu zake?

Nthawi zambiri, kuwonjezeka kwa kukula kwa thupi la cylindrical cell sikungowonjezera kuchuluka kwa mphamvu, komanso kumachepetsanso moyo wozungulira komanso kuchuluka kwa cell.Malingana ndi kuyerekezera, pa 10% yowonjezera mphamvu, moyo wozungulira udzachepetsedwa ndi 20%;kuchuluka kwa ndalama ndi kutulutsa kudzachepetsedwa ndi 30-40%;nthawi yomweyo, kutentha kwa batire kudzakwera pafupifupi 20%.

Ngati kukula kukukulirakulirabe, chitetezo ndi kusinthika kwa cell ya batri zidzachepetsedwa, zomwe zidzawonjezera mosawoneka zoopsa zachitetezo ndi zovuta zamagalimoto amagetsi atsopano.Ichi ndichifukwa chake mabatire akuluakulu a cylindrical monga 26500 ndi 32650 sanathe kukhala pamsika waukulu pamlingo waukulu.chifukwa chake.

Theoretically, poyerekeza ndi18650 batire, batire ya 21700 ili ndi moyo waufupi, nthawi yayitali yolipiritsa yokhala ndi mphamvu zomwezo komanso chitetezo chochepa.Kwa magalimoto amagetsi, chitetezo nthawi zonse chimakhala chofunikira kwambiri.Pofuna kupewa moto chifukwa cha kutentha kwambiri kwa mabatire akuluakulu, makina oziziritsira batire ayenera kupangidwa momveka bwino.Panthawi imodzimodziyo, ndikofunika kwambiri kusankha zoyenera komanso zapamwamba21700 batirepulagi.The21700Lifiyamu batire mawonekedwe a Ams amagwiritsa V0 flame retardant zipangizo monga PA66, amene kugonjetsedwa ndi mkulu ndi otsika kutentha.Zigawo zachitsulo zimagwiritsa ntchito mapangidwe osakanikirana ndi ntchito yabwino yochepetsera kutentha.Ndiwo21700 lithiamu batirecholumikizira.Kusankha bwino.

Mutha21700sinthani18650?

Tikayang'ana pa malangizo a dziko la mphamvu kachulukidwe mphamvu lithiamu mabatire, mu 2020, mphamvu kachulukidwe mphamvu batire maselo upambana 300Wh/kg, ndi kachulukidwe mphamvu kachitidwe batire mphamvu adzafika 260Wh/kg.Komabe, a18650 batiresangathe kukwaniritsa zofunikira zaukadaulozi, ndipo kachulukidwe ka mabatire ambiri apanyumba ndi pakati pa 100 ~ 150Wh/kg.

Pansi pa nthawi yochepa, kuwongolera kwachitsanzo kwazinthu kumathamanga kwambiri kuposa kupita patsogolo kwa zinthu, kotero21700 batire, zomwe zimawonjezera kuchuluka kwa mphamvu pakuwonjezera kuchuluka kwake, mosakayikira zidzakhala zofunikira kwambiri zamabizinesi.Kuphatikizidwa ndi chikoka chachikulu chamakampani a Tesla, batire iyi ikuyenera kukhala njira yotsatira yopangira batire ya cylindrical.Komabe, ndizovuta kudziwa ngati makampani apakhomo adzatumiza21700 mabatiremonga adachitira kale ndi mabatire a 18650.Ndipo the18650 batireali ndi mbiri yakale yachitukuko ndipo ali ndi mphamvu zosinthika.Kuphatikiza pa kugwiritsidwa ntchito pamagalimoto amagetsi, imatha kuwonekanso m'magawo ena monga makompyuta apakompyuta, 3C digito, drones, ndi zida zamagetsi.

Za ku21700 lithiamu batire, palibe unyolo wogwira ntchito wamakampani, womwe mosakayikira udzawonjezera mtengo ndikulepheretsa kupititsa patsogolo.Pachifukwa ichi, yankho la Tesla ndiloyambitsa kupanga kwakukulu mu fakitale ya gigabit, yokhala ndi dongosolo la pafupifupi 500,000 Model 3, ndipo ndi kufunikira kwakukulu kwa Sun City, Tesla ndi yokwanira kukumba zotulukapo.Koma njira iyi ndi yochepa kwa Tesla, yomwe ndi yovuta kwa opanga ena ambiri.

Kuphatikiza apo, msika wamagetsi wamagetsi apanyumba wakula pang'onopang'ono m'zaka zaposachedwa.Ambiri mwa mizere yopangira amapangidwira kupanga18650 mabatire, ndipo ngakhale mphamvu zopangira makampani ena m'zaka zingapo zikubwerazi zidzakonzekera18650.Zitha kuwoneka kuti bizinesiyo ndi The18650 batireakadali ndi chiyembekezo kwa nthawi yayitali.Ndipo mu kukwezedwa kwa21700 mabatire, mfundo zoyenera za dzikolo pamiyezo ya kukula kwa batri ndizofunika kudziwa tsogolo la21700 mabatire.

Ziribe kanthu, msika wamagalimoto amphamvu watsopano ukupita patsogolo mwachangu, ndipo msika wa ogula umakhala ndi kufunikira kwachangu kwa batri.Zimatsimikizira kuti opanga adzaika patsogolo mabatire apamwamba kwambiri ndi ntchito yabwino, ndipo ndondomeko zimasinthidwanso kuti zisinthe msika.

Lero, Tesla watsogolera kulowa21700 batirebwalo lankhondo.Ena opanga mabatire apanyumba amasankha kutsatira, ndipo ena akudikirirabe.Izi zikhoza kukhala njuga kapena phwando.