Obutoffaali obuli ku ssiringi kye ki?

Obutoffaali obulinga ssigiri (cylindrical cells) bwe buba bbaatule za lithium-ziri mu bisenge eby’ekyuma ekikaluba (rigid cylindrical metal casings) nga biriko obusannyalazo (electrodes) nga buzingiddwa mu nsengekera ya spiral. Zitereka era ne zituusa amasoboza ag’amasannyalaze nga ziyita mu nsengekera z’amasannyalaze wakati wa anode eya layeri, katodi, eky’okwawula, n’ebintu eby’amasannyalaze.

Battery zino zafuna okwettanirwa ennyo kubanga enkula yazo eya cylindrical mu butonde egaba puleesa ey’omunda n’ebbugumu kyenkanyi okuyita mu kisenge. Ebipimo ebituufu-nga 18650 (obuwanvu bwa mm 18, obuwanvu bwa mm 65) ne 21700 (obuwanvu bwa mm 21, obuwanvu bwa mm 70)-bibafuula abasinga okukola otoma n’omuwendo-enkola ya bbaatule ekola obulungi okukola. Tesla yamanyisa nnyo enkozesa yazo mu mmotoka ez’amasannyalaze, ng’ebika ebyasooka birimu obutoffaali 6,000 ku 9,000 obw’omuntu ku bubwe obukuŋŋaanyiziddwa mu bbaatule.

Ebitundu ebikulu n'okuzimba .

Enzimba ey’omunda ey’obutoffaali obulinga ssiringi egoberera enkola ekwatagana mu bakola ebintu byonna. Wakati etudde mandrel okwetoloola electrode sheets ki ezitambula ebweru mu ekyo bayinginiya kye bayita "jelly roll" structure.

Cathode etera okukozesa ebintu nga lithium cobalt oxide (LCO), nickel manganese cobalt (NMC), oba lithium iron phosphate (LifePO4). Anode erimu graphite oba silikoni-ebirungo ebisinziira ku. Olususu lw’okwawula polyolefin luziyiza short circuits ate nga lusobozesa lithium ions okusenguka wakati wa electrodes mu kiseera kya charge ne discharge cycles.

Ekizimbulukusa ky’amasannyalaze-eminnyo gya lithium egyasaanuusibwa mu biwunyiriza ebiramu-ebisobozesa entambula ya ion. Ekibiina kyonna kituula munda mu kyuma oba aluminiyamu ekiwa obukuumi obw’ebyuma era nga kikola nga negativu. Obutoffaali obusinga obungi obw’ekika kya ssiringi buteeka ekitundu kya positiivu ekiri wakati nga wansi waliwo ekitundu ekibi wansi, wadde ng’ensengeka ennene nga 4680 ziteeka ebitundu byombi ku ngulu waggulu.

Ekisenge ky’ekyuma kikola kinene nnyo okusukka obukuumi obwangu. Ekuuma obulungi bw’enzimba wansi wa puleesa ey’omunda okuva mu kuzimba ggaasi mu kiseera ky’okukaddiwa. Geometry ya cylindrical egabira puleesa eno mu ngeri y’emu okuyita mu bisenge, ekisobozesa ebisenge ebigonvu okugeraageranya ku nkola za prismatic. Kino kikendeeza ku buzito bw’ebintu ebitaliiko kye kikola era kinyweza katono amaanyi g’obutoffaali ku ddaala ly’obutoffaali.

Ebiragiro ebikwata ku nkola ya Standard .

Amakolero ga bbaatule gataddewo ensengeka z’obutoffaali obuwerako ezituukagana n’omutindo, nga buli emu etuumiddwa erinnya okusinziira ku bipimo byayo mu milimita. Obutoffaali bwa 18650 bwafuga ebyuma ebikozesebwa n’ebikozesebwa mu kukozesa amasannyalaze okuva mu myaka gya 1990, nga buwa obusobozi obuli wakati wa 1,200 ne 3,500 mAh ng’emiwendo gy’amazzi agafuluma gituuka ku 30A okusinziira ku kemiko ne dizayini.

Enkola ya 21700 yavaayo mu mid-2010s nga abakola ebintu banoonya obutoffaali obw’obusobozi obw’oku ntikko. Obunene bwayo obusinga obunene ebitundu 50% bw’ogeraageranya n’obutoffaali 18650 busobozesa obusobozi okutuuka ku 4,000 okutuuka ku 5,000 mAh. Tesla ne Panasonic baakola enkola eno ku Model 3, okutuuka ku maanyi g’amaanyi okwetoloola 300 WH/kg-nga 20% waggulu okusinga obutoffaali bwa 18650 obw’omulembe ogwayita. Enkola ennene yakendeeza ku muwendo gw’obutoffaali obwetaagisa buli mmotoka, okwanguyiza okukuŋŋaanyizibwa n’okukendeeza ku nsaasaanya y’enkola ebitundu nga 9%.

Obutoffaali bwa Tesla 4680 bukiikirira enkulaakulana esembyeyo mu bbaatule ennene-format cylindrical. Nga erina obuwanvu bwa mm 46 n’obuwanvu bwa mm 80, erimu amaanyi agasukka mu mirundi etaano egy’akatoffaali ka 21700. Kkampuni egamba nti enkola eno etuwa 5x obusobozi bw’amasoboza ate 6x amaanyi agafuluma bw’ogeraageranya n’obutoffaali 21700, ne bivvuunula okutuuka ku bitundu 16% ebisinga okuvuga. Wabula, okugerageranya okufulumya kubadde kwa kusoomoozebwa, nga Tesla ekola cell yaayo ey’obukadde 100 4680 yokka mu September 2024 yokka oluvannyuma lw’emyaka ena ng’ekulaakulana.

Enkola endala eza bulijjo mulimu 26650 cell (26mm x 65mm) nga zirina obusobozi obw’erinnya okwetoloola 3,200 mA, ezimanyiddwa ennyo mu bikozesebwa eby’amasannyalaze n’enkola y’okutereka amaanyi. Ensengeka entono eya 14500 (14mm x 50mm) ekola ebyuma ebitambuzibwa ebirina obusobozi okumpi ne 1,600 mAh.

Ebirungi mu by’amakolero .

Okukola obutoffaali bwa cylindrical kiganyulwa mu makumi g’emyaka egy’okulongoosa enkola n’okukola otoma. Enkola ya winding ekola jelly roll ekola ku sipiidi ya waggulu n’okufuga okutuufu okw’okusika, okukakasa okukwatagana kw’obusannyalazo obutakyukakyuka n’obulema obutono. Ebyuma ebikola mu ngeri ey’obwengula bikwata okusiiga electrode, okuwuguka, okuyingiza, okujjuza electrolyte, n’okusiba nga tewali muntu yenna ayingidde mu nsonga.

Ebintu bino ebikuze mu by’amakolero bivvuunulwa butereevu ku birungi ebisaasaanyizibwa. Ebikwata ku makolero okuva mu mwaka gwa 2024 biraga nti obutoffaali obulinga ssiringi busobola okukolebwa mu bwangu okusinga eby’okukozesa eby’ekika kya prismatic oba pouch, okukola kilowatt nnyingi-essaawa buli ssaawa y’okufulumya. Enkola ezituukagana n’omutindo zisobozesa abakola ebyuma okukola ebyuma eby’enjawulo, ebya waggulu-ebitayinza kusobola mu by’enfuna ku dizayini z’obutoffaali obw’enjawulo obw’ekika kya prismatic.

Eby’enfuna eby’omutindo binene. Abakola bbaatule bataddemu obuwumbi mu 18650 ne 21700 ezikola. Ekifo kimu kisobola okuvaamu obukadde n’obukadde bw’obutoffaali buli mwezi oluvannyuma lw’okulinnya mu bujjuvu. Volume eno evuga wansi per-Unit costs through reduced material waste, optimized supply chains, n'okulongoosa mu miwendo gy'amakungula nga kati gisukka 98% ku bakulembeze abakola ebintu.

Okukwatagana kw’omutindo kitegeeza amaanyi amalala ag’okukola. Enkola y’okuzingulula mu ngeri ey’otoma efulumya emizingo gya jeeri egy’enjawulo ennyo nga girina engeri z’amasannyalaze eziteeberezebwa. cell-to-Enjawulo z’obutoffaali mu busobozi, okuziyiza okw’omunda, n’okwefuula-emiwendo gy’okufuuwa gisigala nga ginywezeddwa bw’ogeraageranya n’omukono-obutoffaali obw’ekika kya prismatic obusibiddwa. Okukwatagana kuno kwanguyiza dizayini y'enkola y'okuddukanya bbaatule n'okulongoosa pack-omutindo gw'omutindo.

Ebintu ebikwata ku nzirukanya y’ebbugumu .

Enkula ya cylindrical ekola enkizo ey’obutonde ey’okusaasaanya ebbugumu eri ennyo mu nkola z’amaanyi aga waggulu-. Obutoffaali bwe bupakibwa mu modulo za bbaatule, ebituli wakati w’ebintu ebiringa ssilindala bikola emikutu gy’okutambula kw’amazzi agabuguma. Amakubo gano gasobozesa enkola z’okunyogoza amazzi oba okukyusakyusa empewo okutuuka ku buwanvu bw’obutoffaali obusingawo bw’ogeraageranya n’enteekateeka ezinywevu-ezipakiddwa mu prismatic.

Geometry eyeetooloovu etumbula n’okusaasaana kw’ebbugumu munda mu buli katoffaali. Ebbugumu erikolebwa ku kisenge ky’obusannyalazo nga licaajinga oba okufuluma lirina okutambula ebweru nga liyita mu layeri za jelly roll okutuuka ku kisenge. Nga obutoffaali bwa dayamita obunene butunuulira okweyongera kw’obuziyiza bw’ebbugumu mu makkati gaabwe, ekitundu kya ssiringi -kikendeeza ku bifo ebibuguma bw’ogeraageranya n’obutoffaali obw’ekika kya ‘rectangular prismatic cells’ enkoona we zikung’aanya ebbugumu.

Okugezesa okw’ebbugumu okw’obutoffaali 4680 kulaga nti ebikozesebwa mu nnyumba za aluminiyamu bitereeza omulimu gw’okunyogoza ennyo ku nickel ey’ennono-ekyuma ekissiddwaako. Mu kiseera kya 3C amangu-okusasuza, ebikondo bya aluminiyamu bikendeeza ebbugumu ly’obutoffaali obusinga obunene nga 11℃oluvannyuma lw’eddakiika 10 bw’ogeraageranya n’obutoffaali obujuliza ebyuma. Enkizo eno ey’ebbugumu efuuka ya maanyi nnyo n’ensengekera z’okunyogoza ez’ebbali.

Base cooling versus sidewall cooling eraga design tradeoffs. Ku butoffaali 21700, okunyogoza kwa base kuwaayo nga 12% okusinga 12% heat flux ku gradients z’ebbugumu ezenkanankana bw’ogeraageranya n’enkola z’ebbali. Enkola y’okunyogoza etera okusinziira ku nzimba ya pack-oba dizayini ekwata omusingi omuwanvu-okutegeka okunyogoza oba kyetaagisa ekigere ekigazi eky’okunyogoza okw’ebbali.

Enkola za cylindrical ezituufu zinyanguyiza enkola y’okuddukanya ebbugumu. Bayinginiya ba battery pack basobola okukoppa engeri y’okutambuza ebbugumu omulundi gumu ne bakozesa parameters ezo mu bukadde n’obukadde bw’obutoffaali. Okuteebereza kuno kukendeeza ku budde bw’okukula era kusobozesa okulongoosa dizayini z’embaawo z’okunyogoza, okukozesa ebbugumu mu bbugumu, n’engeri y’okutambula kw’amazzi agatonnya.

Okusaba mu makolero gonna .

Obutoffaali bwa cylindrical power an extraordinarily diverse range of applications, okuva ku byuma bya Milliwatt okutuuka ku nkola za megawatt. Ebyuma ebikozesebwa mu bulamu obwa bulijjo bikiikirira akatale akaasooka, ng’obutoffaali bwa 18650 bukyatera okubeera mu bbaatule za laptop, amataala, ne bbanka z’amasannyalaze ezitambuzibwa. Sayizi yaabwe etuukiridde ebafuula abakyusibwakyusibwa mu byuma byonna, nga biwagira enkola y’obutonde ey’oluvannyuma lw’okutunda ennywevu.

Ebidduka eby’amasannyalaze bikozesa obutoffaali obusinga obunene mu ssiringi ennaku zino. Battery packs za Tesla mu mmotoka za Model S zirimu obutoffaali nga 7,000 ssekinnoomu 18650 oba 21700 obusengekeddwa mu modulo ezirina enkola ennungamu ey’okunyogoza n’okulondoola. Ekirooto kya Lucid Air Dream kikozesa obutoffaali bwa 21700 obuli ku ssiringi 6,600 okutuuka ku 113 kWh pack. BMW yalangiridde nti ebikozesebwa byayo eby’ekika kya Neue Klasse byakutwala obutoffaali bwa ssiringi obwa mm 46 mu buwanvu, ng’endagaano zibalirirwamu obuwumbi bwa Euro amakumi.

Ebikozesebwa mu kukozesa amasannyalaze byeyongedde okwettanira obutoffaali 21700 olw’obusobozi bwabwo obw’okubunyisa amazzi obw’oku ntikko. Battery pack ya 18V eya mutindo nga ekozesa obutoffaali 18650 etuwa ebifulumizibwa nga 800W, ate 21700 -esinziira ku packs ezisinziira ku 1,440W-An 80% amaanyi. Kino kisobozesa ebikozesebwa ebitaliiko miguwa okukwatagana oba okusukka omulimu gw’ebintu ebiringa ebiringa emiguwa.

Okunoonyereza mu bwengula kwesigama ku butoffaali obulinga ssilinda kubanga ensengekera yaabwe enkakanyavu egumira enjawulo za puleesa ezisukkiridde n’okunyigirizibwa kw’ebyuma. Ennyonyi nnamunkanga eya Mars Ingenuity ne Rover ey’okugumiikiriza byombi bikola nga bakozesa obutoffaali bwa cylindrical lithium-obukola mu ngeri eyesigika wadde nga waliwo obutonde bwa Mars obw’obukambwe. Emmotoka z’empaka za Formula E zikozesa enkola z’obutoffaali ezifaanagana, nga ziraga omutindo gwazo mu mbeera ezisaba.

Ebyuma eby’obujjanjabi, enkola z’okutereka eby’amangu, ne giridi-Okutereka amaanyi mu bipimo byeyongera okuyingizaamu obutoffaali obulinga ssilindala. Likoda yaabwe ey’obukuumi ekakakasiddwa, obulamu bw’enzirukanya empanvu (obutera okusukka 500 charge/discharge cycles), n’obusobozi okugumira okutulugunyizibwa kw’ebyuma bifuula okusaanira emisomo-okukozesebwa okukulu ng’okulemererwa kutwala ebivaamu eby’amaanyi.

Ebifaananyi by’omutindo gw’emirimu .

Energy density ekiikirira key performance metric nga obutoffaali obulinga ssiringi buvuganya bulungi. Obutoffaali bwa NMC obw’omulembe 21700 butuuka ku 250-300 wh/kg ku mutendera gw’obutoffaali, nga density ya pack-level etuuka ku 170-200 WH/kg oluvannyuma lw’okubala ensengekera za module n’enkola z’okuddukanya ebbugumu. Enkola ya 4680 etunuulidde 244 WH/kg okusinziira ku nsonga za Tesla, wadde ng’okugezesa okwetongodde kujja kukakasa ebivudde mu kukola eby’obusuubuzi.

Power density eyawula obutoffaali obuliko ssiringi okuva ku prismatic alternatives mu nkola ezimu. Olw’okuba obutoffaali bwa cylindrical buyungibwa mu parallel, buwa amakubo agasingawo aga current per amp-essaawa y’obusobozi. Enzimba eno esobozesa emiwendo gy'okufulumya okutuuka ku 35A ku ​​nkola za waggulu-okufulumya amazzi. Ebiyungo ebingi ebifaanagana bigabanya okukola ebbugumu okuyita mu butoffaali obusingawo, okuziyiza obutoffaali ssekinnoomu okubuguma okusukkiridde mu kiseera ky’okusaba kw’amaanyi ag’oku ntikko.

Obulamu bw’enzirukanya businziira nnyo ku kemiko, embeera y’okukola, n’obuziba bw’okufulumya. Obutoffaali bwa LifePO4 obulimu ssiringi busobola okusukka enzirukanya 2,000 ate nga busigala n’obusobozi bwa 80%, ekibufuula okusikiriza okutereka okutali kwa kikula. NMC Chemistry etera okuleeta enzirukanya 500-1,000 wansi wa profile z’okukozesa mmotoka nga zirina emiwendo gy’okucaajinga egy’enjawulo n’ebbugumu eribeera mu kifo. Ekisenge ekinywevu kikuuma ebitundu eby’omunda okuva ku situleesi y’ebyuma ebikendeeza ku nkola endala.

Obuziyiza obw’omunda bukosa engeri zombi ez’okukola n’okubuguma. Well-obutoffaali obukoleddwa mu ssiringi bukuuma obuziyiza obutono okuyita mu kuyungibwa kwa tab okulungi n’okukung’aanya okuliwo kati. Enteekateeka y’emmeeza eyanjulwa n’obutoffaali 4680 emalawo tabu z’ennono, mu kifo ky’okuyunga empenda ya electrode yonna butereevu ku kisenge. Kino kikendeeza ku buziyiza ebitundu nga 50% era kitereeza nnyo omulimu gw’ebbugumu.

Self-Emiwendo gy’okufuuwa ku butoffaali bwa ssiringi obw’omutindo gisigala wansi wa 3% buli mwezi ku bbugumu erya bulijjo. Ekyuma ekiyitibwa hermetically sealed metal casing kiziyiza obunnyogovu okuyingira era kikendeeza ku side reactions eziyanguwa okukaddiwa. Obunywevu buno busobozesa obulamu obuwanvu era bufuula obutoffaali obulinga obuliko ssiringi okusaanira obutatera-enkola z’amasannyalaze ezikozesebwa backup.

Okugatta mu .Lithium Ion Battery Pack .s

Okukungaanya obutoffaali obulinga ssiringi mu bupapula bwa bbaatule bwa lithium ion obukola kyetaagisa okufaayo ennyo ku nkola y’ebyuma, amasannyalaze, n’ebbugumu. Obutoffaali bulina okuteekebwa obulungi okusobola okugumira okukankana n’okusannyalala nga bwe bukuuma okukwatagana kw’ebbugumu n’enkola z’okunyogoza.

Designs za battery pack zitera okusengeka obutoffaali mu lunyiriri-Ensengeka ezifaanagana okutuuka ku vvulovumenti n’obusobozi ekigendererwa. Ekipapula ky’emmotoka eky’amasannyalaze ekya 400V kiyinza okukozesa obutoffaali 96 mu lunyiriri (96s) nga biriko ennyiriri ezikwatagana eziwera okutuuka ku amp eyagala-essaawa. Singa okozesa obutoffaali 21700 nga bulina obusobozi bwa 5 AH, okutuuka ku 100 kWh kyetaagisa obutoffaali 20,000 mu nsengeka ya 96S208P.

Enkolagana y’obutoffaali ereeta okusoomoozebwa okw’amaanyi mu yinginiya. Buli terminal ennungi ne negativu erina okuweerezebwa ku busbars oba interconnect plates nga ziziyiza consistent. Welds embi zikola ebifo ebibuguma n’obutakwatagana bwa vvulovumenti okubuna pack. Automated laser oba ultrasonic welding systems zikakasa okuddiŋŋana, wadde nga zongera ku buzibu bw’okukola bw’ogeraageranya n’obutoffaali bwa prismatic obwetaaga okuyungibwa okutono kwonna.

Enkola y’okuddukanya bbaatule erondoola vvulovumenti z’obutoffaali ssekinnoomu, ebbugumu, n’amasannyalaze okusobola okukuuma enkola ey’obukuumi. Ku packs ezirina enkumi n’enkumi z’obutoffaali obulinga ssiringi, BMS erina okulondoola yuniti nnyingi ez’omuntu ku bubwe bw’ogeraageranya n’ensengeka z’eby’omuwendo (prismatic designs) ezenkanankana. Kino kyongera ku buzibu bw’enkola n’omuwendo, wadde nga modular BMS architectures ziyamba okuddukanya minzaani.

Okupakinga kw’ebyuma eby’obutoffaali obulinga ssilindala mu ngeri entuufu kukozesa enjuyi omukaaga -okupakinga okusobola okutumbula obulungi obulungi, wadde nga kino kikyalekawo ekifo ekitaliimu nga 10% wakati w’obutoffaali. Ebituli bino bikwatagana n’emikutu gy’okunyogoza naye bikendeeza ku maanyi g’ekipapula bw’ogeraageranya n’obutoffaali obw’ekika kya prismatic obutuuka kumpi ku 100% space utilization. Okusuubulagana wakati w’okuddukanya ebbugumu n’obulungi bwa volumetric shapes pack architecture decisions.

cell-Okuyunga ku ddaala kuwa emigaso gy’obukuumi mu paaka eziringa ssilindala. Singa akatoffaali kamu kagwa, kinnoomu kiyunga ku lunyiriri, ne kisobozesa ekipapula ekisigadde okugenda mu maaso n’okukola ku busobozi obukendeezeddwa. Okugumiikiriza kuno okw'ensobi kuzibu okutuukako n'obutoffaali obunene-okutondeka kwa prismatic nga okulemererwa kw'obutoffaali okumu- kuyinza okukosa modulo zonna.

Okwekenenya okugeraageranya n’obutoffaali bwa prismatic .

Okulonda wakati w’obutoffaali obulimu ssiringi n’obw’ekika kya prismatic buzingiramu okusuubulagana okw’ekikugu n’ebyenfuna okungi. Obutoffaali bwa prismatic buwa enkozesa y’ekifo eky’oku ntikko, n’enkula yabwo eya nneekulungirivu okumalawo ebituli wakati w’ebintu ebiringa ssilindala. Kino kivvuunulwa nti 10-20% volumetric energy density ku mutendera gwa pack, ekintu ekikulu ennyo ku motoka range ne cargo space.

Wabula obutoffaali bwa prismatic bugula ssente nnyingi okukola. Enkola yaabwe ennene yeetaaga okutuuma oba okuwuguka okutuufu-era -enkola z’okufuuwa ezikola mpola okusinga okuwunyiriza okw’ekika kya cylindrical. Ebipimo ebikoleddwa ku nkola z’emmotoka ez’enjawulo biziyiza ebyenfuna eby’omutindo, ng’abakola ebintu bakola dizayini z’obutoffaali obw’enjawulo obw’enjawulo bw’ogeraageranya n’enkola entonotono ez’omutindo eza ssiringi.

Obuzibu bw’okuddukanya ebbugumu bwawukana nnyo. Obutoffaali bwa prismatic bupakinga bulungi wamu, nga bwetaagisa okunyogoza wakati w’obutoffaali oba ku bitundu ebipakiddwa. Okuggya ebbugumu okuva mu masekkati g’obutoffaali kuleeta okusoomoozebwa, naddala ku butoffaali obunene-okutondekawo okw’obutonde obusukka mu 100 AH obusobozi. Obutoffaali obulinga ssilindala mu butonde bugabanya ebbugumu okuyita mu musalaba gwabwo omutono- era nga buganyulwa mu bbanga erisobozesa okutambula kw’amazzi agabuguma.

Emiwendo gy’obulema mu kukola kikwata ku kwesigika kw’enkola. Akatoffaali ka prismatic akamu akaliko obuzibu kasobola okukosa modulo yonna olw’okuyungibwa kw’omuddiring’anwa kw’obutoffaali obunene-obusobozi. Cylindrical packs zigaba obusobozi mu nkumi n’enkumi z’obutoffaali, kale okulemererwa ssekinnoomu tekulina kinene kye kukola. Enkola y’okukola ssiringi enkulu nayo efulumya obulema obutono ku buli katoffaali.

Omutindo gwa cylindrical format gusobozesa enkola z’okugaba ezikyukakyuka. Abakola Battery Pack basobola okunoonya obutoffaali 18650 oba 21700 okuva mu basuubuzi abawera n’okukyusa abatunzi bwe kiba kyetaagisa. Obutoffaali bwa prismatic butera okwetaaga dizayini ez’enjawulo ezisibiddwa ku basuubuzi abamu, ekikendeeza ku kukyukakyuka n’okwongera ku bulabe bw’okugaba ebintu.

Okusinziira ku ndowooza y’okuddaabiriza n’okulabirira, packs za modular cylindrical zisobozesa abakugu okukyusa obutoffaali ssekinnoomu oba module entono. Prismatic pack designs zitera okwetaaga okukyusa modulo zonna eza multi-ezongedde ku nsaasaanya y’empeereza. Kino kikulu nnyo naddala ku bidduka by’emmotoka eby’obusuubuzi nga okukendeeza ku budde bw’okuyimirira n’okuddaabiriza kukosa omuwendo gwonna ogw’obwannannyini.

Ebintu ebikuuma obukuumi n’engeri y’okulemererwa .

Obutoffaali obuyitibwa cylindrical cells buyingizaamu enkola eziwera ez’obukuumi okuziyiza okulemererwa okw’akabi. Ekisenge ky’ekyuma kiwa layini esooka ey’okwekuuma, nga kirimu ebitundu eby’omunda n’okukuuma obulungi bw’enzimba wansi w’okunyigirizibwa kw’ebyuma. Ebituli ebikendeeza puleesa bikola singa puleesa ey’omunda esukka emitendera egy’obukuumi, nga gifulumya omukka nga obutoffaali tebunnakutuka mu ngeri ya katyabaga.

Current Interrupt Devices (CID) Ggyako obutoffaali enkalakkalira singa puleesa ey’omunda esituka mu ngeri ey’akabi. Olususu olugonvu lumenya ku mitendera gya puleesa egyateekebwawo, mu mubiri nga kyawula ekitundu ekirungi eky’enkomerero okuva mu butoffaali obw’omunda. Kino kiziyiza ebikolwa ebirala eby’amasannyalaze era kimalawo akabi k’okubwatuka, wadde ng’obutoffaali bulema enkalakkalira.

Geometry ya cylindrical yennyini eyamba ku bukuumi. Puleesa ey’omunda okuva mu kukola ggaasi egabira abantu kyenkanyi mu bisenge ebikooneddwa, ekikendeeza ku buzito bwa situleesi. Obutoffaali bwa prismatic obwa nneekulungirivu bufuna situleesi esingako ku nsonda, ekiyinza okuvaako okukyukakyuka oba okukulukuta kw’omusango. Enkula eyeetooloovu era ekuuma obulungi bw’enzimba mu biseera by’okudduka okw’ebbugumu, okulungamya omukka ogwokya okuyita mu kifo eky’okudduukirira okusinga okukutula ekisenge.

Enkola z’okuddukanya bbaatule ziwa okufuga obukuumi bw’ebyuma nga balondoola vvulovumenti y’obutoffaali, amasannyalaze, n’ebbugumu. Singa parameter yonna esukka safe limits, BMS esobola okukendeeza ku charge/discharge rates oba okukutula ddala pack ku loads. Ku butoffaali obuli ku ssiringi, okulondoola obutoffaali kinnoomu kisobozesa okuzuula amangu obutoffaali obulemererwa nga tebunnakwata baliraanwa.

Thermal runaway-Lithium esinga okuba ey’amaanyi-Engeri y’okulemererwa kwa bbaatule-esigala nga yeeraliikirira mu nkola zonna. Obutoffaali obulinga ssilindala bulimu amaanyi buli yuniti bw’ogeraageranya n’obutoffaali obunene-Format prismatic cells, kale ebibaawo eby’ebbugumu ebidduka bifulumya ebbugumu litono. Enzimba y’obutoffaali obuwera-etegeeza nti akatoffaali kamu akayingira mu kudduka tekatandika mangu okulemererwa okukulukuta singa ebiziyiza eby’ebbugumu ebituufu ebyawula obutoffaali.

Okugezesa obukuumi mu makolero mulimu okuyingira mu misumaali, short circuit ey’ebweru, okusasulwa ennyo, okusukka-okufuluma, n’okugezesa okulaga okw’ebbugumu eringi- Obutoffaali obuli ku mutindo obuyitibwa cylindrical cells buyita mu kukebera kuno awatali muliro oba okubwatuka. Ebintu ebikozesebwa mu kyuma n’obukuumi bikolagana okuziyiza ebivaamu eby’obulabe ne bwe kiba nti obutoffaali bufuna okutulugunyizibwa okusukka embeera ya bulijjo ey’okukola.

Ebiyiiya n'emitendera gy'amakolero .

Enteekateeka y’obutoffaali bw’emmeeza ekiikirira obuyiiya obusinga obukulu obusembyeyo mu tekinologiya w’obutoffaali obw’ekika kya cylindrical cell. Obutoffaali obw’ennono bukozesa tabs-Emiguwa gy’ebyuma ebigonvu egya welded to electrode ends-okukola current wakati wa jelly roll ne terminals. Taabu zino zikola obuziyiza bw’amasannyalaze n’okukola ebbugumu, nga zikoma ku kukola.

Dizayini z’ebipande zimalawo ebitundu bino ebitali bimu nga ziyunga empenda y’obusannyalazo bwonna butereevu ku kisenge ky’obutoffaali n’enkoofiira. Kino kikendeeza nnyo ku buwanvu bw’ekkubo obuliwo kati n’okuziyiza, okulongoosa enkola y’amasannyalaze n’ebbugumu. Tesla's 4680 cell ekozesa quasi-tabless design ekendeeza resistance nga 50% bw'ogeraageranya n'obutoffaali 21700 obuliko tabed.

Aluminium casings zikyusa nickel ey’ennono-ekyuma ekissiddwa mu nkola ya waggulu-okukola. Aluminiyamu's superior thermal conductivity (nga 205 w/m·k versus 50 w/m·k for steel) esobozesa okuggya ebbugumu mu ngeri ennungi. Deep-Okukuba n'ekisenge-Enkola z'okukola ez'okuyonja zikola ebibbo bya aluminiyamu nga biriko ebisenge bya mm 0.75 ne base za mm 0.9, nga zikuuma amaanyi g'ebyuma ate nga zikendeeza ku buzito.

Silicon-Ebintu bya anode ebinywezeddwa bisuubiza okulongoosa amaanyi mu bungi bw’amasoboza. Okukyusa graphite ezimu ne silikoni kyongera ku busobozi kubanga silikoni atereka lithium omungi buli yuniti mass. Naye, silikoni agaziwa nnyo mu kiseera ky’okuwuuma, n’akola situleesi y’ebyuma mu jelly roll. Abakola ebintu bakola silicon-graphite composite anodes ezitebenkeza obusobozi bw’obusobozi ku kusoomoozebwa kw’okutebenkera kw’enzimba.

Enkola z’okusiiga ebyuma ebikalu ziyinza okukendeeza ku nsaasaanya y’okukola n’okukosa obutonde bw’ensi. Okukola obusannyalazo obw’ennono kyetaagisa ekizimbulukusa-okusinziira ku biwujjo ebirina okukalizibwa, okunywa amasoboza ag’amaanyi. Obukodyo bw’okusiiga obukalu busiiga ebintu ebikola nga tebirina biwunyiriza, okumalawo emitendera gy’okukala n’okusobozesa obusannyalazo obusinga obunene obulina amaanyi amangi.

Amakolero gakyagenda mu maaso n’okunoonyereza ku nkola ennene eza ssiringi ezisukka 4680. Okunoonyereza ku ndowooza (theoretical studies) kwekenneenya obutoffaali 5070 ne wadde 6080, wadde ng’okusoomoozebwa kw’okuddukanya ebbugumu kweyongera ne dayamita. Enkula ennungi egeraageranya obulungi bw’okukola, okukendeeza ku nsaasaanya okuyita mu kukendeeza ku muwendo gw’obutoffaali, n’engeri y’ebbugumu eddukanyizibwa.

Obulagirizi bw'akatale .

Akatale k’obutoffaali aka cylindrical cell kaatuuka ku buwumbi bwa ddoola 61.04 mu nsi yonna mu 2024, okuva ku buwumbi bwa ddoola 39.02 mu 2023. Enkola eno ey’okukula egenda mu maaso n’okuvugibwa okwettanira mmotoka ez’amasannyalaze, okuteeka mu nkola enkola y’okutereka amaanyi, n’okugaziya okukozesebwa mu bikozesebwa amasannyalaze n’ebyuma ebikozesebwa mu byuma.

Mmotoka ez’amasannyalaze zikiikirira omuvuzi omukulu ow’okukula, ng’ebiteberezebwa biraga nti akatale ka 46XX cylindrical format kayinza okutuuka ku buwumbi bwa ddoola 82.22 mu mwaka gwa 2031. Abakola mmotoka abawera okusukka Tesla beettanira obutoffaali obunene-obutoffaali obukola emirimu egy’enjawulo, omuli ne BMW’s multi{-Billion Euro Contracts with Catl and Eve Energy for Neue KLELASSE.

Okuvuganya okuva mu butoffaali bwa prismatic kweyongera ng’abakola ebintu birongoosa enkola zaabwe ez’okufulumya. Prismatic formats zifuga akatale ka Chinese EV era zifuna traction mu nsi yonna. Naye, obutoffaali obulinga ssiringi bukuuma enkizo mu butale obuteereddwawo nga enkola y’okugaba ebintu, ebikozesebwa mu kukola ebintu, n’enteekateeka z’okupakinga zibadde zirongooseddwa okumala emyaka mingi.

Chemistry Evolution ekola enkyukakyuka mu katale. Lithium iron phosphate (LFP) cylindrical cells efuna akatale olw’ebisale by’ebintu ebitono n’obukuumi obw’amaanyi bw’ogeraageranya ne nikel-ezeesigamiziddwa ku kemiko. Wadde nga LFP egaba amaanyi amatono, enkizo yaayo ey’omuwendo n’obulamu obulungi ennyo mu cycle bigifuula esikiriza ku mmotoka ez’ettunzi n’okutereka nga tezikyukakyuka nga ebizibu by’omu bwengula bitono okusinga omuwendo gwonna ogw’enkola.

Enkula ya bbaatule enkalu-eyinza okutaataaganya enzimba y’obutoffaali obulinga ssilindala. Ebiziyiza eby’amasannyalaze ebikalu bimalawo amasannyalaze ag’amazzi, ebiyinza okusobozesa obungi bw’amasoboza aga waggulu n’okulongoosa obukuumi. Naye, okugaziwa kw’ebyuma mu kiseera ky’okucaajinga kuleeta okusoomoozebwa eri ensengekera y’okuyiringisibwa kw’ekiwundu ekozesebwa mu butoffaali bwa ssiringi. Abanoonyereza abamu balaga nti tekinologiya w’eggwanga anywevu-ayinza okwagala enkola za prismatic oba pouch.

Obutonde obw’omutindo obw’obutoffaali obuyitibwa cylindrical cells buwa obugumikiriza ku nkyukakyuka ezitaataaganya. Ne bwe kiba nti chemistries empya n’ensengekera z’obutoffaali bivaayo, omusingi omunene ennyo ogussiddwamu ebyuma n’emmotoka ezikozesa obutoffaali obulinga ssilindala bikakasa okugenda mu maaso n’okukola okukyusa n’okukozesa oluvannyuma lw’okutunda.

Ebibuuzo ebitera okubuuzibwa .

Kiki ekifuula obutoffaali obulinga ssiringi okwawukana ku butoffaali bwa prismatic?

Obutoffaali bwa cylindrical bukozesa ensengekera ya jelly roll ey’ekiwundu munda mu kyuma ekyekulungirivu, ate obutoffaali bwa prismatic bukozesa oba obutumbiddwa oba obuwundu-era-obusannyalazo obufuukuuse mu kisenge ekiyitibwa rectangular casing. Enkola ya cylindrical egaba okusaasaanya ebbugumu okulungi n’okukendeeza ku nsaasaanya y’okukola olw’okukola mu ngeri ey’otoma, naye obutoffaali obw’ekika kya prismatic butuuka ku nkozesa y’ekifo esingako mu bbaatule.

Obutoffaali obuyitibwa cylindrical cells bumala bbanga ki?

Obulamu bwa cycle businziira ku mbeera ya kemiko n’enkozesa. Lithium iron phosphate (LFP) obutoffaali obulinga ssiringi butera okuleeta enzirukanya 2,000-3,000 nga obusobozi tebunnakka okutuuka ku bitundu 80%. Obutoffaali bwa NMC Chemistry buwa enzirukanya 500-1,000 mu nkola z’emmotoka. Obulamu bwa kalenda butera okusukka emyaka 10 nga buterekeddwa ku bbugumu ery'ekigero wansi wa diguli 25 .

Lwaki emmotoka ez’amasannyalaze zikozesa enkumi n’enkumi z’obutoffaali obutono obulinga ssiringi mu kifo ky’obutoffaali obunene obutono?

Obutoffaali obutono obulinga ssiringi buwa enkizo mu kuddukanya ebbugumu, okukula mu kukola, n’okugumira ensobi. Ebituli wakati w’obutoffaali bisobozesa okunyogoza okulungi, ensengeka ezituukiridde zikozesa ebyenfuna by’ekipimo, era okulemererwa kw’obutoffaali obw’omuntu kinnoomu tekukosa pack yonna. Naye, omuze ogugenda mu nkola ennene nga 4680 cells gugenderera okukendeeza ku muwendo gw’obutoffaali ate nga gukuuma emigaso gino.

Obutoffaali obuyitibwa cylindrical cells busobola okubwatuka oba okukwata omuliro?

Obutoffaali obuli ku mutindo obuyitibwa cylindrical cells buyingizaamu ebintu ebingi eby’obukuumi omuli ebifo ebikendeeza puleesa, ebyuma ebisalako kati, n’ebyuma ebinywevu. Bwe kikolebwa obulungi era ne kikozesebwa mu bipimo, okulemererwa okw’akatyabaga tekutera kubaawo nnyo. Enkola z’okuddukanya bbaatule ziwa obukuumi obw’enjawulo nga ziziyiza okusasuza okusukkiridde, okusukka-okufuluma, n’embeera y’ebbugumu erisukkiridde.

Ebirowoozo ebiggalawo .

Enkola ya cylindrical cell ekakasiddwa nti esobola okukyusibwakyusibwa mu ngeri eyeewuunyisa, ekyukakyuka okuva ku bbaatule za laptop okutuuka ku kuwa amasannyalaze n’enkola z’okutereka amasannyalaze. Wadde nga prismatic ne pouch alternatives ziwa enkizo ezimu, okugatta enkola y’okukola, obusobozi bw’okuddukanya ebbugumu, n’amakumi g’emyaka egy’okulongoosa kikuuma obutoffaali obw’ekika kya cylindrical nga buvuganya mu nkola nnyingi. Enkulaakulana egenda mu maaso ey’ensengeka ennene, kemiko ezirongooseddwa, n’obukodyo bw’okukola obw’omulembe bulaga nti obutoffaali obulinga ssilindala bujja kusigala nga bukulu mu kutereka amaanyi okumala emyaka egijja, naddala mu nkola ezitwala omuwendo gw’obwesigwa, omuwendo-obulungi, n’okukola okukakasibwa okusinga okukozesa obulungi obuzito.