Intando21700 iiselibuyisela18650 iiseli?

Ekubeni uTesla ubhengeze ukuveliswa kwe21700iibhetri amandla kwaye basebenzise ukuba Model 3 imifuziselo, i21700Isiphango sebhetri yamandla siye satshayela.Kwangoko emva kukaTesla, i-Samsung nayo yakhupha entsha21700 ibhetri.Ikwabanga ukuba ubuninzi bamandla ebhetri entsha buphindwe kabini kunebhetri ekwimveliso ngoku, kwaye ipakethe yebhetri eyenziwe yibhetri entsha inokuhlawuliswa kumthamo webhetri kunye noluhlu lokuhamba ngeekhilomitha ezingama-370 ngaphakathi kwemizuzu engama-20.Ukujongana ne21700imakethi yebhetri yamandla, i-ams ilungele yona.Iiplagi ezifana nochungechunge lwe-XT60 olunokuthi ludlule i-30A luphuculwe kwimarike iminyaka engaphezu kweshumi kwaye lusetyenziswa ngokubanzi kwizithuthi zombane, iirobhothi ezihlakaniphile, izixhobo zokugcina amandla, njl. Kwishishini lesicelo sebhetri ye-lithium, ithenjwa kakhulu abathengi.

Njengaye18650 ibhetri, uTesla21700 ibhetriikwayenye yeebhetri ze-lithium cylindrical.Phakathi kwazo, "21" ibhekisa kwibhetri enobubanzi obuyi-21mm, "70" ibhekisa kubude obuyi-70mm, kwaye "0" imele ibhetri eyicylindrical.

UTesla uthatha inyathelo lokuqala

UTesla uqalise i21700 ibhetrihayi ukukhokela kwicala letekhnoloji, kodwa ngenxa yoxinzelelo lweendleko.Iimveliso ezikhawulezayo ze-Ams 'zamkela uphando oludibeneyo lwabathengi abaninzi kunye nemodeli yophuhliso ukunciphisa iindleko kubathengi ngelixa beqinisekisa umgangatho.

Ekuqaleni kweprojekthi ye-Model 3, uMusk wabeka ixabiso le-35,000 yeedola zase-US kule moto, kodwa ukuba i-original18650 ibhetriisasetyenziswa, kuya kubakho iziphumo ezimbini, nokuba kukuqinisekisa ukuba ubomi bebhetri budlula ixabiso, okanye ukuqinisekisa ukuba ixabiso liyancitshiswa.Ukunyamezela kunzima ukwamkela kwi-Musk "ekhethiweyo".Ngoko umbuzo kukuba kukho ibhetri enokunciphisa iindleko ngelixa uqinisekisa ubomi bebhetri.Impendulo ithi21700 iibhetri.

Nangona i18650 ibhetriwenza igalelo elikhulu ekunyukeni kukaTesla, uMusk ngokwakhe ubesoloko ethandabuza ngayo.Ngokumalunga ne21700kwaye18650 iibhetri, UMusk uthe kumajelo asekuhlaleni: Ukuvela kwe18650 ibhetriyingozi yembali ngokupheleleyo.Umgangatho weemveliso zakuqala, ngoku kuphela21700 iibhetriinokuhlangabezana neemfuno zokusebenza kwebhetri yezithuthi zombane.

Abahlalutyi ishishini bakholelwa ukuba ukuxinana kwamandla21700-uhlobo lweebhetriliphezulu kunelo laziwayo18650-uhlobo lweebhetri, kwaye iindleko ziya kuncitshiswa emva kokwahlulahlula.Ukhetho lwe21700Akunjalo ngenxa yokuba ukusebenza kwayo ngokupheleleyo kubhetele kunezinye iimodeli, kodwa isiphumo sebhalansi ebanzi yeepropathi ezibonakalayo kunye noqoqosho.

Kuxelwe ukuba ukuxinana kwamandla oku21700 ibhetriinkqubo imalunga 300Wh/kg, nto leyo engaphezulu kwama-20% ngaphezulu18650 ibhetriUxinaniso lwamandla olusetyenziswe kwiModel S yasekuqaleni. Umthamo weseli unyuswe ngama-35%, ngelixa iindleko zenkqubo ziyancipha malunga ne-10%.UMusk wathi: Le seti ye21700 iibhetriokwangoku yibhetri enoxinano olukhulu lwamandla kunye nelona xabiso liphantsi phakathi kweebhetri eziveliswe ngobuninzi.

Iingenelo zicacile, kodwa izinto ezingeloncedo zifanele ukuba siphaphe

　　21700 ibhetriineengenelo ezintathu.Ukuxinana kwamandla kuzo zombini iseli enye kunye neqela kuphuculwe kakhulu.Ukuthatha i21700 ibhetrieveliswe nguTesla njengomzekelo, emva kokutshintsha kwi18650imodeli kwi21700imodeli, umthamo weseli yebhetri unokufikelela kwi-3 ~ 4.8Ah, okunyuka kakhulu kwe-35%.Emva kweqela, ukuxinana kwamandla kusandiswa ngama-20%.

Ngenxa yobuninzi bamandla obuphezulu beeseli, inani leebhetri ezifunekayo phantsi kwamandla afanayo linokuncitshiswa malunga ne-1/3.Ngelixa ukunciphisa ubunzima bolawulo lwenkqubo, kuya kunciphisa kwakhona inani lezakhiwo zetsimbi kunye nezixhobo zombane ezisetyenziswa kwibhetri.Ngenxa yokuncipha kwenani leemonomers ezisetyenzisiweyo kunye nokuncipha kokusetyenziswa kwezinye izincedisi, ubunzima benkqubo yebhetri yamandla buphuculwe ngokuyimfuneko phantsi kwesiseko sokuqinisekisa umthamo ofanayo.Emva kokuba i-Samsung SDI itshintshele kwiseti entsha ye21700 iibhetri, kwafunyaniswa ukuba ubunzima benkqubo buncitshiswe nge-10% xa kuthelekiswa nebhetri yangoku.

Ekubeni ubukhulu beseli bunokwenziwa bukhulu kwaye nomthamo weseli unokwandiswa, kutheni ungasebenzisi iseli enobukhulu kunye nomthamo omkhulu?

Ngokuqhelekileyo, ukunyuka kobukhulu bomzimba weseli ye-cylindrical akuyi kwandisa kuphela amandla ombane, kodwa kuya kunciphisa ubomi bomjikelezo kunye nesantya seseli.Ngokutsho koqikelelo, kuyo yonke i-10% yokunyuka kwamandla, ubomi bomjikelezo buya kuncitshiswa malunga ne-20%;intlawulo kunye nesantya sokukhupha siya kuncitshiswa nge-30-40%;ngexesha elifanayo, ukushisa kwebhetri kuya kunyuka malunga ne-20%.

Ukuba ubungakanani buyaqhubeka bukhula, ukhuseleko kunye nokulungelelaniswa kwebhetri kuya kuncitshiswa, okuya kwandisa ngokungabonakaliyo iingozi zokhuseleko kunye nobunzima boyilo lwezithuthi zamandla amatsha.Yiyo loo nto iibhetri ezinkulu zecylindrical ezifana ne-26500 kunye ne-32650 azikwazanga ukuhlala kwimarike eqhelekileyo kwizinga elikhulu.isizathu.

Ngokwethiyori, xa kuthelekiswa ne18650 ibhetri, ibhetri ye-21700 inobomi obufutshane, ixesha elide lokutshaja kunye nomthamo ofanayo kunye nokhuseleko oluphantsi.Kwizithuthi zombane, ukhuseleko luhlala luphambili kuqala.Ukuze uthintele imililo ngenxa yokunyuka kobushushu obugqithisileyo beebhetri ezinkulu, inkqubo yokupholisa ibhetri kufuneka iyilwe ngokufanelekileyo.Ngexesha elifanayo, kubaluleke kakhulu ukukhetha okufanelekileyo kunye nomgangatho ophezulu21700 ibhetriiplagi.I21700I-lithium ibhetri ye-Ams isebenzisa i-V0 i-flame retardant materials njenge-PA66, ekwazi ukumelana nobushushu obuphezulu kunye nezantsi.Amalungu esinyithi asebenzisa uyilo olungenanto kunye nokusebenza kakuhle kokutshabalalisa ubushushu.Yeyona21700 lithium ibhetriisinxibelelanisi.Olona khetho lungcono.

Ngaba21700buyisela18650?

Ukujonga kwimigaqo yelizwe yobuninzi bamandla ebhetri ye-lithium yamandla, kwi-2020, ubuninzi bamandla amaseli ebhetri amandla aya kudlula i-300Wh / kg, kwaye ubuninzi bamandla beenkqubo zebhetri zamandla ziya kufikelela kwi-260Wh / kg.Nangona kunjalo, i18650 ibhetriayikwazi ukuhlangabezana nale mfuno yobugcisa, kwaye ubuninzi beebhetri zasekhaya ziphakathi kwe-100 ~ 150Wh/kg.

Ngaphantsi kweemeko ezilinganiselweyo, ukuphuculwa kwemodeli yemveliso kukhawuleza kakhulu kunenkqubela yezinto eziphathekayo, ngoko ke21700 ibhetri, eyandisa ubuninzi bamandla ngokunyusa umthamo wayo, ngokuqinisekileyo iya kuba yingqwalasela ephambili kumashishini.Idityaniswe nefuthe elikhulu leshishini likaTesla, le bhetri inokuthi ibe yeyona ndlela ilandelayo yophuhliso lwebhetri.Nangona kunjalo, kunzima ukufumanisa ukuba iinkampani zasekhaya ziya kuthunyelwa21700 iibhetrinjengoko benzile ngaphambili ngeebhetri ze-18650.Kwaye i18650 ibhetriinembali ende yophuhliso kwaye inokwazi ukuziqhelanisa nokuqina.Ukongeza ekusetyenzisweni kwintsimi yezithuthi zombane, inokubonwa nakwezinye iindawo ezifana neekhompyutheni zekhompyutheni, i-3C yedijithali, i-drones, kunye nezixhobo zamandla.

Ukwenzela i21700 lithium ibhetri, akukho khonkco lwezoshishino olusebenzayo, oluya kwandisa ngokungathandabuzekiyo iindleko kwaye luthintele inkqubela phambili yokukhuthazwa.Kule nkalo, isisombululo sikaTesla kukuqala ukuveliswa kwemveliso enkulu kwi-gigabit factory, ephethe umyalelo malunga ne-500,000 Model 3, kunye nemfuno enkulu ye-Sun City, iTesla yanele ukugaya imveliso.Kodwa le ndlela ilinganiselwe kwiTesla, enzima kuninzi lwabanye abavelisi.

Ngaphaya koko, imakethi yebhetri yamandla yasekhaya iye yanda kancinci kwiminyaka yakutshanje.Uninzi lwemigca yemveliso imiselwe ukuveliswa kwe18650 iibhetri, kunye namandla okuvelisa ezinye iinkampani kwiminyaka embalwa ezayo iya kulungiselelwa18650.Kuya kubonakala ukuba ishishini yi18650 ibhetriusenethemba ixesha elide.Kwaye kunyuso lwe21700 iibhetri, imigaqo-nkqubo yelizwe ehambelana nemigangatho yobungakanani bebhetri isitshixo sokumisela ikamva le21700 iibhetri.

Kungakhathaliseki ukuba yintoni na, imarike entsha yemoto yamandla iqhubela phambili ngokukhawuleza, kwaye imarike yabathengi bokugqibela inesidingo esiphuthumayo sobomi bebhetri.Inquma ukuba abavelisi baya kunika kuqala iibhetri ezinoxinano oluphezulu kunye nokusebenza kakuhle ngokubanzi, kunye nemigaqo-nkqubo iphinde ilungelelanise utshintsho kwiimarike.

Namhlanje, uTesla ukhokele ukungena kwi21700 ibhetriibala ledabi.Abanye abavelisi bebhetri basekhaya bakhetha ukulandela, kwaye abanye basalindile.Oku kunokuba ngumdlalo wokungcakaza okanye isidlo.