Ibhethri ye-lithium engu-18650 ekuqaleni ibhekisela kubhethri ye-NI-MH ne-Lithium-ion.Manje imele kakhulu ibhethri ye-Lithium-ion njengoba ibhethri le-NI-MH lisetshenziswe imvamisa encane.

I-18650 ithola igama layo kusukela kusayizi weseli: 18.6 mm ububanzi no-65.2 mm ubude nesisindo esingama-47g.

I-LiFePO4(LFP) kanye ne-LiNiaCobMncO2(NCM) yizinhlobo ezidume kakhulu.I-Tesla yenze inani elikhulu lokuhlola ibhethri ukuze ithole ibhethri elingcono kakhulu lemoto yakhe kagesi futhi i-18650 iwinile.I-18650 yaba yisisekelo sokuthuthukiswa kobuchwepheshe bebhethri kuTeslaulayini wokukhiqiza kusukela lapho.

Ngaphambi kokuba yamukelwe embonini yezimoto zikagesi, i-18650 kade isetshenziswa ku-electronics njengama-laptops, amakhamera, okwenza kube uhlobo lokuqala, oluzinzile kakhulu lwebhethri ye-lithium.Ngemuva kweminyaka yokuthuthuka, abakhiqizi basebenzisa intuthuko yobuchwepheshe ezuzwa emikhiqizweni kagesi yabathengi kumabhethri emoto.

Uma kuqhathaniswa nezinye izinhlobo zebhethri ezisezingeni eliphansi, i-18650 ihambisana kakhulu nezinhlelo zokusebenza ezihlukene ezinezidingo zamandla kagesi, zamanje, kanye nosayizi.

I-18650 yahlolelwa ukuthi ayinabo ubuthi, ayinakushi, ayiqhumisi, futhi ayinakungcola, ngaphansi kwesitifiketi se-RoHS.

Ukuzinza kokushisa ngaphansi kwezinga lokushisa eliphezulu nakho kudlula ezinye izinhlelo ze-Li-ion.Ibona izinga lokukhishwa elingu-100% ku-65 ℃.

Ngaphezu kwalokho, iseli yebhethri ivalwe kusilinda sensimbi, esivumela ukuthi kube khona usayizi omncane.Ngenxa yokuma kwayo okuncane, okuqukethe inani elincane lamandla, ukwehluleka kweyunithi yebhethri eyodwa kuthumela umthelela omncane ekusebenzeni kwakho konke kwebhethri.

Kulabo inkampani yamabhayisikili kagesi yangaphandle efanaSuper73, izinga eliphezulu lokuphepha libalulekile ukuze ibhethri imelane nokushaqeka lapho igibele endaweni embi.Teslaiqaphele ekukhetheni ibhethri njengoba ingxenye ephakathi kwamaseli ebhethri ekhiqizwa izimo zomgwaqo ezihlukene ingaholela ezingozini ezimbi njengokuqhuma.

Ibhethri ye-lithium eyodwa engu-18650 inamandla angu-1200mAh – 3600mAh kanti amanye anama-800mAh.Lesi sici sivumela isethi yebhethri ukuthi idlulele ku-5000mAh uma ihlanganiswe ndawonye.

Ngesisindo esifanayo, umthamo webhethri engu-18650 ungaba izikhathi ezingu-1.5-2 zalokho kubhethri le-NI-MH.Izinga lokuzikhulula nalo liphansi.

Ngokusho kwedatha enikezwe kwaTesla, izinga elithile lamandla lingakhuphukela ku-250Wh/kg ukuze lihlangabezane nezidingo zobubanzi bezimoto zikagesi zakwaTesla.

Ibhethri le-18650 linesikhathi eside esilindelekile uma kuqhathaniswa namabhethri ajwayelekile.Impilo yomjikelezo ingaba yi-1000-2000 ngaphansi kokunakekelwa okufanele.Ngemva kweminyaka yokuthuthuka, umklamo wesakhiwo, ubuchwepheshe bokukhiqiza kanye nemishini inekhono, okuvumela izindleko eziphansi zokusebenza nokugcinwa.

Ngokusebenza kwayo okuvelele, ibhethri ye-lithium engu-18650 nayo ingatholakala kuSuper73Imigqa yokukhiqiza, uhlobo lwamabhayisikili kagesi akudala adume kakhulu e-US.

Kodwa-ke, ibhethri le-lithium le-18650 lisabhekene nezinye izithiyo ezifana nokuzifudumeza okuphezulu, ukuhlanganisa okuyinkimbinkimbi nokushaja okungasheshi, okuyisizathu esiqondile esenza uTesla asebenzisane ne-Panasonic yebhethri enkulu ukuthuthukisa ibhethri ye-lithium engu-21700.

Kuthiwa ibhethri le-lithium elibiza kakhulu elinamandla athile aphezulu emigqeni yokukhiqiza ngobuningi.

Ububanzi 21mm, Ubude 70mm, Isisindo 68g.

Umfanekiso 1 - Umehluko wokugcinwa kwamandla (Kwesobunxele) nempilo yomjikelezo (Kwesokudla) phakathi kuka-18650 no-21700

Amandla eseli elilodwa ande ngo50%

Ibhethri ye-lithium engu-21700 ekhiqizwa i-Tesla, ingafinyelela ku-3-4.8Ah ngeseli ngayinye.

 

U-20% ongeziwe wamandla athile esistimu yebhethri

Ngokusho kwedatha evela ku-Tesla, ibhethri le-18650 linamandla acishe abe ngu-250Wh/kg kanti i-21700 ingakhuphuka ifike ku-300Wh/kg.

 

Yonga u-9% ezindlekweni zesistimu yebhethri

Kusukela ekuhlaziyeni kukaTesla, izindleko zesethi yebhethri zilinganiselwa ku-$170/Wh kanye ne-$185/Wh ye-21700 ne-18650 ngokulandelanayo.Imodeli 3 yehlise ngempumelelo izindleko zayo ngo-9% ohlelweni lwebhethri.

 

Isisindo esingu-10% silula

Noma ibhethri le-21700 linosayizi omkhulu kunabo bonke, libamba amandla athile aphezulu kuseli eyodwa, okusho ukuthi inani lamaseli adingekayo ukuze uthole amandla athile linciphe ngo-33%.Kulula futhi ukuphatha isethi yebhethri yezinhlelo zokusebenza ezahlukene.Ngaphezu kwalokho, njengoba kudingeka amaseli amancane, ukungabi khona kwezingxenye zensimbi neze-elekthronikhi kuzosiza isistimu yebhethri yehlise isisindo.

Kuthiwa iSuper73 kungenzeka ithathe indawo ye-18650 ifake i-21700 yokukhiqiza ngobuningi esikhathini esifushane esizayo, iqale ngemodeli edayiswa kakhulu.RX.

 

 

Kuningi okufanayo uma kuziwa emigqeni yokukhiqiza ibhethri nezinqubo.Ngakho-ke kungenzeka ukuguqula ukukhiqizwa kwebhethri ye-18650 kuya ku-21700's ngokushintsha okunye ukucushwa ohlelweni lwangaphambili lokukhiqiza.

 

 

Ireferensi:

https://www.sciencedirect.com/science/article/pii/S0378775320309186