Intando21700 amaselibuyisela18650 amaseli?

Kusukela uTesla ememezele ukukhiqizwa kwe21700amandla amabhethri futhi wawasebenzisa Model 3 amamodeli, the21700isiphepho sebhethri lamandla sishanele.Ngokushesha ngemva kukaTesla, abakwaSamsung baphinde bakhipha entsha21700 ibhethri.Iphinde ithi ukuminyana kwamandla ebhethri elisha kuphindwe kabili kunebhethri elikhiqizwayo njengamanje, futhi iphakethe lebhethri elakhiwe ibhethri elisha lingashajwa lingene kumthamo webhethri ngebanga lokuhamba lamamayela angu-370 phakathi nemizuzu engu-20.Ebhekene ne21700imakethe yebhethri yamandla, i-ams isilungele yona.Amapulagi afana nochungechunge lwe-XT60 olungadlula i-30A aphucuziwe emakethe iminyaka engaphezu kweshumi futhi asetshenziswa kakhulu ezimotweni zikagesi, amarobhothi ahlakaniphile, imishini yokugcina amandla, njll. Embonini yesicelo sebhethri ye-lithium, ithenjwa ngokujulile amakhasimende.

Njenge-18650 ibhethri, iTesla21700 ibhethrifuthi ingelinye lamabhethri e-lithium ayicylindrical.Phakathi kwazo, elithi “21″ lisho ibhethri elinobubanzi obungu-21mm, “70″ lisho ubude obungu-70mm, futhi elithi “0” limele ibhethri eliyicylindrical.

U-Tesla uthatha isinyathelo sokuqala

U-Tesla wethula uhlelo21700 ibhethrihhayi ukuhola isiqondiso sobuchwepheshe, kodwa empeleni ngenxa yengcindezi yezindleko.Imikhiqizo yokuxhuma esheshayo ye-Ams yamukela ucwaningo oluhlanganyelwe lwamakhasimende amaningi kanye nemodeli yokuthuthukisa ukuze kwehliselwe izindleko kumakhasimende kuyilapho iqinisekisa ikhwalithi.

Ekuqaleni kwephrojekthi ye-Model 3, u-Musk wabeka inani lama-dollar angu-35,000 kule moto, kodwa uma18650 ibhethriisasetshenziswa, kuzoba nemiphumela emibili, kungaba ukuqinisekisa ukuthi impilo yebhethri idlula intengo, noma ukuqinisekisa ukuthi intengo iyancipha.Ukukhuthazela kunzima ukwamukela i-Musk "ekhethayo".Ngakho umbuzo uwukuthi ingabe likhona yini ibhethri elinganciphisa izindleko kuyilapho liqinisekisa ukuphila kwebhethri.Impendulo ithi21700 amabhethri.

Nakuba i-18650 ibhethriwenza iminikelo emikhulu ekukhuphukeni kukaTesla, uMusk ngokwakhe ubelokhu engabaza ngakho.Mayelana ne21700futhi18650 amabhethri, uMusk uthe ezinkundleni zokuxhumana: Ukuvela kwe18650 ibhethringokuphelele ingozi engokomlando.Izinga lemikhiqizo yokuqala, manje kuphela21700 amabhethriingahlangabezana nezidingo zokusebenza kwebhethri zezimoto zikagesi.

Imboni abahlaziyi bakholelwa ukuthi ukuminyana energy of21700-uhlobo lwamabhethriiphakeme kunaleyo eyaziwayoAmabhethri ohlobo lwe-18650, futhi izindleko zizoncishiswa ngemva kokuqoqwa.Ukukhetha kwe21700akungenxa yokuthi ukusebenza kwayo okuphelele kungcono kunamanye amamodeli, kodwa kuwumphumela webhalansi ebanzi yezakhiwo nomnotho.

Kubikwa ukuthi ukuminyana kwamandla lokhu21700 ibhethriIsistimu icishe ibe ngu-300Wh/kg, engaphezulu kuka-20% ephakeme kunaleyo18650 ibhethriukuminyana kwamandla asetshenziswa kuModel S yasekuqaleni. Umthamo weseli ukhuphuka ngo-35%, kuyilapho izindleko zesistimu zincishiswa cishe ngo-10%.UMusk uthe: Le sethi ye21700 amabhethriokwamanje ibhethri elinamandla aphezulu kakhulu kanye nezindleko eziphansi phakathi kwamabhethri akhiqizwa ngobuningi.

Izinzuzo zisobala, kodwa ukungalungi kuyakufanelekela ukuqapha

　　21700 ibhethrikunezinzuzo ezintathu.Ukuminyana kwamandla kokubili kweseli eyodwa kanye neqembu kuthuthukiswe kakhulu.Ukuthatha21700 ibhethriekhiqizwe nguTesla njengesibonelo, ngemuva kokusuka ku-18650imodeli ku21700imodeli, umthamo weseli yebhethri ungafinyelela ku-3~4.8Ah, okuwukunyuka okukhulu kwama-35%.Ngemuva kweqembu, ukuminyana kwamandla kusakhuphuka ngo-20%.

Ngenxa yobuningi bamandla amaseli, inani lamaseli ebhethri adingekayo ngaphansi kwamandla afanayo lingancishiswa cishe ngo-1/3.Nakuba kunciphisa ubunzima bokuphathwa kwesistimu, kuzophinde kunciphise inani lezakhiwo zensimbi nezinsiza zikagesi ezisetshenziswa kuphakethe lebhethri.Ngenxa yokwehliswa kwenani lama-monomer asetshenzisiwe kanye nokwehliswa kokusetshenziswa kwezinye izesekeli, isisindo sesistimu yebhethri yamandla empeleni sithuthukiswa ngaphansi kwesisekelo sokuqinisekisa umthamo ofanayo.Ngemuva kokuthi i-Samsung SDI ishintshele kusethi entsha ye21700 amabhethri, kutholwe ukuthi isisindo sesistimu sincishiswe ngo-10% uma kuqhathaniswa nebhethri yamanje.

Njengoba usayizi wengqamuzana ungenziwa ube mkhulu futhi amandla engqamuzana angandiswa, kungani ungasebenzisi iseli elinosayizi omkhulu namandla?

Ngokuvamile, ukwanda kobukhulu bomzimba we-cylindrical cell ngeke nje kwandise amandla, kodwa futhi kuzonciphisa impilo yomjikelezo kanye nezinga leseli.Ngokwezilinganiso, kuzo zonke i-10% yokwanda kwamandla, impilo yomjikelezo izoncishiswa cishe ngama-20%;izinga lokushaja nokukhipha lizoncishiswa ngo-30-40%;ngesikhathi esifanayo, izinga lokushisa lebhethri lizokhuphuka cishe ngo-20%.

Uma usayizi uqhubeka nokukhula, ukuphepha kanye nokuvumelana nezimo kwebhethri kuzoncishiswa, okuzokwandisa ngokungabonakali izingozi zokuphepha ezingaba khona kanye nobunzima bokuklama kwezimoto ezintsha ezisebenza ngamandla.Yingakho amabhethri amakhulu angama-cylindrical afana ne-26500 ne-32650 engakwazi ukuthatha imakethe evamile ngesilinganiso esikhulu.isizathu.

Ngokwethiyori, uma kuqhathaniswa ne18650 ibhethri, ibhethri le-21700 linokuphila okufushane, isikhathi eside sokushaja esinomthamo ofanayo nokuphepha okuphansi.Ezimotweni ezisebenza ngogesi, ukuphepha kuhlala kuyinto ehamba phambili.Ukuze ugweme imililo ngenxa yokukhuphuka kwezinga lokushisa okukhulu kwamabhethri amakhulu, isistimu yokupholisa ibhethri kufanele yakhelwe ngendlela enengqondo kakhudlwana.Ngesikhathi esifanayo, kubaluleke kakhulu ukukhetha okunengqondo nekhwalithi ephezulu21700 ibhethriipulaki.I21700I-lithium battery interface ye-Ams isebenzisa i-V0 flame retardant materials njenge-PA66, ekwazi ukumelana namazinga okushisa aphezulu naphansi.Izingxenye zensimbi zisebenzisa umklamo ongenalutho oluphambene nokusebenza okuhle kokukhipha ukushisa.Yilokhu21700 ibhethri ye-lithiumisixhumi.Ukukhetha okungcono kakhulu.

Angakwazi21700buyisela18650?

Uma sibheka imihlahlandlela kazwelonke yokuminyana kwamandla kwamandla amabhethri e-lithium, ngo-2020, ukuminyana kwamandla amaseli ebhethri lamandla azodlula u-300Wh/kg, futhi ukuminyana kwamandla wezinhlelo zamabhethri amandla kuzofinyelela ku-260Wh/kg.Nokho, i18650 ibhethriayikwazi ukuhlangabezana nale mfuneko yobuchwepheshe, futhi ukuminyana kwamabhethri amaningi asekhaya kuphakathi kuka-100~150Wh/kg.

Ngaphansi kwezimo ezinomkhawulo wesikhathi, ukuthuthukiswa kwemodeli yomkhiqizo kuyashesha kakhulu kunokuqhubeka kwezinto ezibonakalayo, ngakho-ke21700 ibhethri, okwandisa ukuminyana kwamandla ngokwandisa umthamo wawo, nakanjani kuzoba ukucatshangelwa okuyinhloko kwamabhizinisi.Ngokuhambisana nomthelela omkhulu wemboni kaTesla, leli bhethri kungenzeka libe umkhuba olandelayo wokuthuthukiswa kwebhethri oyisilinda.Kodwa-ke, kunzima ukucacisa ukuthi izinkampani zasekhaya zizosebenza yini21700 amabhethrinjengoba benza ngaphambili ngamabhethri angu-18650.Futhi i18650 ibhethriinomlando omude wokuthuthuka futhi inokuvumelana nezimo okuqinile.Ngaphezu kokusetshenziswa emkhakheni wezimoto zikagesi, ingabonakala nakweminye imikhakha efana namakhompiyutha wezincwadi, i-3C digital, i-drones, namathuluzi kagesi.

Okwe21700 ibhethri ye-lithium, alukho uchungechunge lwezimboni olusebenzayo, ngokungangabazeki oluzokhuphula izindleko futhi luvimbele ukuqhubeka kokuphromotha.Mayelana nalokhu, isixazululo sikaTesla siwukuqala ukukhiqiza okukhulu embonini yegigabit, ebambe i-oda le-Model 3 engaba ngu-500,000, futhi ngesidingo esikhulu se-Sun City, i-Tesla yanele ukugaya okukhiphayo.Kodwa le ndlela ilinganiselwe ku-Tesla, okunzima kwabanye abakhiqizi abaningi.

Ngaphezu kwalokho, imakethe yebhethri yamandla yasekhaya ikhule kancane kancane eminyakeni yakamuva.Iningi lemigqa yokukhiqiza ihlelelwe ukukhiqizwa kwe18650 amabhethri, futhi ngisho namandla okukhiqiza ezinkampani ezithile eminyakeni embalwa ezayo azolungiselelwa18650.Kuyabonakala ukuthi imboni yiThe18650 ibhethriusenethemba isikhathi eside.Futhi ekukhuthazeni kwe21700 amabhethri, izinqubomgomo zezwe ezifanele ezilinganisweni zikasayizi webhethri ziwukhiye wokunquma isiphetho se21700 amabhethri.

Kungakhathaliseki ukuthi kwenzekani, imakethe yezimoto zamandla amasha ithuthuka ngokushesha, futhi imakethe yabathengi yokugcina inesidingo esiphuthumayo sempilo yebhethri.Inquma ukuthi abakhiqizi bazonikeza kuqala amabhethri aminyana kakhulu ngokusebenza kangcono sekukonke, futhi izinqubomgomo nazo ziyalungiselelwa izinguquko zemakethe.

Namuhla, uTesla uhole ekungeneni kwe21700 ibhethriinkundla yempi.Abanye abakhiqizi bebhethri basekhaya bakhetha ukulandela, kanti abanye basalindile.Lokhu kungase kube ukugembula noma idili.