Uhlu lwebhethri lusebenza ngokuxhuma amaseli ebhethri amaningi ngochungechunge nokucushwa okufanayo ukuze kutholwe amandla kagesi aphezulu noma amandla angaphezu kwalawo anganikezwa yibhethri elilodwa. Izixhumanisi zochungechunge zengeza i-voltage kuyilapho uxhumo oluhambisanayo lwengeza umthamo, okuvumela amalungu afanayo ukuthi alungiselwe izidingo ezithile zamandla namandla.
I-Architecture ye-Battery Arrays
Amalungu afanayo ebhethri asebenza ngedizayini eyimojuli ekala amaseli ngamanye abe amasistimu amakhulu. Kusisekelo, amaseli ebhethri elilodwa-ngokuvamile angu-3.6V ukuya ku-3.7V we-lithium-i-ion-awakwazi ukunika amandla ngokuqondile izinhlelo zokusebenza eziningi ezidinga amandla ombane aphezulu noma isikhathi sokusebenza esinwetshiwe. Isakhiwo samalungu afanayo sixazulula lokhu ngokuhlela amaseli abe amamojula, amamojula abe amaphekhi, futhi amaphakethe abe yizinhlu eziphelele.
Umklamo ulandela izimiso ezifana nezinhlaka zamaphaneli elanga. Amaseli angawodwana ayanqwabelana ochungechungeni ukuze anyuse i-voltage, bese lezi zintambo zochungechunge zixhumeka ngokuhambisana ukuze zikhulise umthamo. Ibhethri yekhompuyutha ephathekayo evamile isebenzisa ukucushwa kwe-4s2p: amaseli amane ochungechungeni (14.4V) namaqembu amabili ahambisanayo (umthamo ophindwe kabili). Kala lokhu izikhathi eziyizinkulungwane, futhi uthola usizo-lwezilinganiso zebhethri zesikali njenge-Tesla's Hornsdale Power Reserve eno-150MW okukhiphayo.
Isigaba -sesendlalelo Ezintathu:
Inhlangano ebonakalayo ngokuvamile ilandela izendlalelo ezintathu. Isendlalelo seseli siqukethe amayunithi ebhethri ngamanye-amaseli angama-cylindrical 18650, amaseli e-prismatic, noma amaseli esikhwama. Isendlalelo semojula sihlanganisa amaseli angu-10-100 kanye nokuqapha okuhlanganisiwe. Isendlalelo samalungu afanayo sihlanganisa amamojula amaningi anezinhlelo zokuphatha ezimaphakathi.
Amalungu afanayo esimanje ahlanganisa izinhlelo zokuphatha ibhethri eziyinkimbinkimbi (BMS) kuleveli ngayinye. Lawa masistimu aqapha i-voltage, yamanje, izinga lokushisa, nesimo sokushaja kwawo wonke amaseli. Ngaphandle kwalokhu kuqapha, amaseli angakhukhuleka aphume kubhalansi, okuholela ekuncipheni kokusebenza noma ezinkingeni zokuphepha.
I-Series vs Parallel: The Voltage-Capacity Trade-ivaliwe
Ukuqonda ukuthi uchungechunge noxhumano oluhambisanayo lusebenza kanjani kuveza ukuthi kungani ama-array ebhethri eguquguquka kangaka.
Ukucushwa kochungechungeizixhumanisi zamabhethri ziyaphela-ukuze-ziphele, ukuxhuma itheminali ephozithivu yebhethri eyodwa kutheminali enegethivu yelandelayo. Lolu hlelo lwengeza ama-voltages ngenkathi umthamo uhlala ungashintshi. Amabhethri amane e-12V 100Ah ochungechungeni adala isistimu engu-48V 100Ah. Amandla kagesi aphezulu abalulekile ezinhlelweni ezifana nezimoto zikagesi kanye nezishintshashintshayo zelanga ezidinga amandla amakhulu ngaphandle kokudonsa amandla amaningi ngamakhebuli.
Ifomula iqondile: Ingqikithi Yamandla Kagesi=Amandla Kagesi Ngeseli × Inombolo Yamaseli Ochungechunge. Iphakethe lebhethri le-Tesla Model 3 liqukethe cishe amaseli angu-4,416 ahlelwe ngamaqembu angu-96 amaseli angu-46 ngalinye, afinyelela cishe u-350V we-voltage yegama.
Ukucushwa Okuhambisanayoisebenza ngendlela ehlukile. Ixhuma wonke amatheminali amahle ndawonye kanye nawo wonke amatheminali anegethivu ndawonye. Lokhu kugcina i-voltage ingashintshi ngenkathi iphindaphinda umthamo. Amabhethri amane e-12V 100Ah ahambisanayo agcina i-12V kodwa ahlinzeka ngesamba somthamo ongu-400Ah{7}}kane isikhathi sokusebenza.
Isibalo somthamo: Ingqikithi Yamandla (Ah)=Umthamo Iseli ngalinye × Inombolo Yezintambo Ezifanayo. Lokhu kulungiselelwa kufanelana nezinhlelo zokusebenza ezidinga ukusebenza okunwetshiwe kuma-voltage ajwayelekile, njengamasistimu wamandla ayisipele kanye nokuvalwa-kwegridi yokufakwa kwesola.
Uchungechunge-I-Parallel Hybridukucushwa kuhlanganisa zombili izindlela. Amalungu afanayo angu-8-ebhethri angase akhe amaqembu amabili ahambisanayo amabhethri ochungechunge amane lilinye, linikeze kokubili amandla ombane akhuphukile namandla. Lokhu kuvumelana nezimo kuvumela abaklami ukuthi bahambisane nezidingo ze-voltage kanye namandla ngokunembile. Isikhungo sase-Hornsdale sisebenzisa amakhulukhulu amamojula ebhethri ngamanye kuchungechunge oluyinkimbinkimbi-ukuhlelwa okuhambisanayo ukuze kuzuzwe ukuphuma kwamandla angu-150MW ngomthamo wokugcina ongu-194MWh.
Ukucatshangelwa kwedizayini eyodwa ebalulekile: wonke amabhethri ohlwini kufanele abe nokucaciswa okufanayo. Ukuxuba ama-voltage ahlukene, amandla, noma amakhemikhali kudala ukungalingani okwehlisa ukusebenza kahle futhi kube nezingozi zokuphepha.
Inselele Yokuphatha Ibhethri
Ukusebenzisa izinkulungwane zamaseli njengeyunithi eyodwa ehlangene kudinga ukuphathwa okuyinkimbinkimbi. Isistimu yokuphatha ibhethri yenza imisebenzi emithathu eyinhloko: ukuqapha, ukulinganisa, nokuvikela.
Ukuqapha Iseliilandelela i-voltage, yamanje, nezinga lokushisa kuwo wonke amaseli noma iqembu leselula ngesikhathi-sangempela. Kuhlelo lokusebenza{2}}elingamaseli angu-10,000, i-BMS icubungula izigidi zamaphoyinti edatha ngomzuzwana. Lokhu kuqapha okuyimbudumbudu kunika amandla ukutholwa kusenesikhathi kwamaseli ahlulekayo ngaphambi kokuthi kuthinte wonke amalungu afanayo.
Ukuqapha izinga lokushisa kubaluleke kakhulu. Amabhethri e-Lithium-ion asebenza kahle kakhulu phakathi kuka-15℃no-35℃. Ngaphandle kwalolu banga, ukusebenza kuyehla kanye nezingozi zokuphepha ziyanda. Amalungu afanayo amakhulu ahlanganisa amasistimu okupholisa asebenzayo{6}}okupholisa uketshezi{7}kuzinhlelo zokusebenza zamandla aphezulu, ukupholisa komoya emithwalweni emaphakathi{8}}eqondiswa idatha yezinga lokushisa le-BMS.
Ukulinganisa Kweseliibhekana nenkinga ebalulekile: amangqamuzana ngamanye awasebenzi ngokufanayo. Ukwehluka kokukhiqiza, amazinga okushisa ahlukene, namazinga okuguga kubangela amaseli ukuba aphume ekuvumelaneni. Ngaphandle kokungenelela, amaseli abuthakathaka aba yizingqinamba.
Amasistimu okulinganisa asebenzayo adlulisa amandla ukusuka kumaseli anamandla ukuya kwabuthaka ngama-capacitor noma ama-inductors. Lokhu kugcina ukushaja okufanayo kumalungu afanayo, kunweba ubude bempilo nokukhulisa umthamo osebenzisekayo. Ucwaningo oluvela kubakhiqizi bebhethri lubonisa ukuthi ukulinganisa okufanele kungakhuphula ubude besikhathi sokuphila ngo-30-40%.
Ukulinganisa okwenziwayo kusebenzisa izinto eziphikisayo ukukhipha amandla engeziwe kumaseli anamandla njengokushisa. Nakuba kulula futhi ishibhile, ayisebenzi kahle kunokulinganisa okusebenzayo. Izinsiza eziningi{2}}zezilinganiso zesikali zisebenzisa amasistimu asebenzayo ukuze kuncishiswe ukumosheka kwamandla.
Izinhlelo Zokuvikelayakha isendlalelo sokugcina sokuphepha. I-BMS inganqamula amalungu afanayo uma ithola izimo eziyingozi: i-overcurrent, overvoltage, undervoltage, noma thermal runway. Izinqamuli zesekethe namafuse kunikeza ihadiwe{2}}isivikelo seleveli njengesipele.
E-Hornsdale Power Reserve, i-BMS kaTesla iqapha amamojula ebhethri angama-2,300. Isistimu ingasabela kushintsho lwefrikhwensi yegridi kuma-millisecond angu-140{4}}ngokushesha kakhulu kunesikhathi sokuphendula samasekhondi angu-6 wama-turbines avamile. Lesi sivinini senza amalungu afanayo ebhethri abe yigugu ekuqiniseni igridi.
Amaphethini okumisa ezinhlelo zokusebenza ezehlukene
Idizayini yamalungu afanayo ebhethri iyahluka kakhulu ngokuya ngezidingo zohlelo lokusebenza. Icala ngalinye lokusetshenziswa lidinga i-voltage ethile, umthamo, nezici zokuphuma.
Izimoto zikagesibeka phambili amandla kagesi aphezulu ekusebenzeni kahle kwezimoto kanye nokuminyana kwamandla aphezulu ebangeni. I-Chevrolet Bolt isebenzisa amaseli angu-288 ekucushweni kwe-96s3p, idala isistimu engu-350V enamandla angu-60 kWh. Amandla kagesi aphezulu anciphisa ukulahleka kwamanje nokuqinile kumakhebuli, kuyilapho amaqembu ahambisanayo enikeza umthamo owanele wamamayela angu-250+ wobubanzi.
Ama-EV array abhekana nezinselele ezihlukile zokushisa. Ukushaja okusheshayo namazinga aphezulu okukhipha adala ukushisa okubalulekile. Abakhiqizi basebenzisa amasistimu okupholisa ama-liquid ane-glycol{2}ama-coolants asuselwa ku-glycol azungeza kumashaneli phakathi kwamaqembu eseli. I-i3 yakwaBMW, isibonelo, igcina amaseli ngaphakathi kwebanga lokushisa elingu-2℃isebenzisa ukupholisa okusebenzayo.
Isitoreji Samandla Egridiamasistimu adinga umthamo omkhulu wamahora okusebenza. Lawa malungu afanayo ngokuvamile asebenzisa ama-voltage aphansi (1000-1500V DC) kodwa izilinganiso zamandla ezinkulu. Isikhungo se-Gateway Energy Storage e-California sitshale u-230MWh sisebenzisa amamojula ebhethri e-lithium iron phosphate (LFP) angu-10,080 ezindaweni ezifanayo kuwo wonke ama-Tesla Megapacks angu-56.
Amalungu afanayo egridi kufanele aphendule ngokushesha ekuguquguqukeni kwefrikhwensi. Uma ifrikhwensi yegridi yehla ngaphansi kuka-50 Hz (noma u-60 Hz eNyakatho Melika), i-BMS iyala amalungu afanayo ukuthi ajove amandla ngaphakathi kwama-millisecond. Le sevisi yokulawula imvamisa, eyenziwa yi-Hornsdale njalo, itholele lesi sikhungo amaRandi ayizigidi eziyi-116 ekongeni izindleko phakathi neminyaka yokuqala emibili.
I-Solar-Plus-Isitorejiamasistimu okuhlala ngokuvamile asebenzisa amabhange ebhethri angu-48V{1}}okuvumelana phakathi kokuphepha nokusebenza kahle. Amabhethri amane e-12V ochungechungeni adala le voltage, efana nokokufaka okujwayelekile kwe-solar inverter. Abanikazi bezindlu bangaqala ngebhethri elilodwa futhi bengeze amayunithi ahambisanayo ukuze bakhulise umthamo njengoba kudingeka, benze isistimu ibe yimodyuli futhi ikhule.
Izindawo zokuhlala zibhekene nezinselelo ezihlukene kunezinhlelo ezisetshenziswayo. Kumelwe zisebenze ezindaweni ezingenamibandela (amagaraji, izindawo ezivalekile) kuwo wonke amazinga okushisa abanzi. Lokhu kudinga ukuvikeleka kwesimo sezulu okuqinile nokuphathwa kokushisa naphezu kwesikhala esilinganiselwe sezinhlelo zokupholisa.
Amandla Ekhophi Yasenqolobaneniizinhlelo zokusebenza ezifana nezikhungo zedatha zisebenzisa ibhethri elifanayo elilungiselelwe impendulo esheshayo kunesikhathi eside. Lawa masistimu ahlala ekhokhiswe ngokugcwele, elungele ukwenza kusebenze lapho amandla egridi ehluleka khona. Isistimu ye-UPS yesikhungo sedatha evamile isebenzisa izintambo zebhethri eziningi ngokuhambisana ukuze kuqinisekiswe ukuthi iyunithi yezinhlamvu eyodwa ihluleka{2}, ezinye zigcina ukusebenza kuyilapho kushintshaniswa iyunithi engalungile.
I-Physics of Energy Flow
Yini ngempela eyenzekayo ngaphakathi kwebhethri uma amandla ageleza? Ukuqonda izinqubo ze-electrochemical kanye nogesi kuveza kokubili ubuhle bobuchwepheshe kanye nemikhawulo yabo.
Phakathikhipha, i-lithium ion isuka ku-anode (i-electrode engeyiyo) nge-electrolyte iye ku-cathode (i-electrode enhle). Lokhu kunyakaza kwe-ion kudala umehluko we-voltage oshayela ama-electron kumjikelezo wangaphandle-usebenzisa amandla amanje. Kuchungechunge lochungechunge, le voltage ihlanganisa amaseli wonke. Kumalungu afanayo afanayo, okwamanje kusuka kuseli ngalinye kuyahlangana.
Okukhipha amandla kuncike kukho kokubili i-voltage kanye namanje: Amandla (W)=Amandla kagesi (V) × Amanje (A). I-400V array eletha i-100A inikeza amandla angu-40kW. Uma ilungiselelwe ngendlela ehlukile njenge-200V × 200A, isaletha u-40kW-kodwa yamanje ephezulu idinga amakhebuli ashubile futhi idala ukulahlekelwa okwengeziwe.
Ukumelana kwangaphakathikuthinta ukusebenza kahle. Iseli ngalinye linokumelana okuguqula amandla athile abe ukushisa kunokuba abe umsebenzi owusizo. Ekucushweni kochungechunge, ukumelana kwengeza ngokulandelana, kodwa njengoba kwamanje kuhlala kungashintshi, ukulahlekelwa okuphelele kokumelana nakho kulingana ne-I²R lapho ngikhona futhi u-R ukuphikiswa okuphelele. Ukucushwa okuhambisanayo kugcina i-voltage ingaguquki kodwa ihlukanisa okwamanje phakathi kwamagatsha, kunciphisa ukulahlekelwa okuphikisayo kwegatsha ngalinye.
Lokhu kuchaza ukuthi kungani ukulungiselelwa{0}}kumandla kagesi aphezulu kusebenza kahle{1}ezinhlelweni zokusebenza zamandla aphezulu. Isistimu engu-400V enamandla angu-40kW idonsa u-100A. Isistimu engu-100V edlulisa amandla afanayo idonsa u-400A-iphindaphinda kane ukulahlekelwa kwamanje nokukhulisa ukumelana nezikhathi ezingu-16.
Iyashajaibuyisela emuva ukugeleza kwe-ion. Amandla angaphandle aphoqa ama-ion e-lithium abuyele ku-anode, agcine amandla ngamakhemikhali. Ukushaja okusheshayo kuphusha imisinga ephezulu kumalungu afanayo, okukhiqiza ukushisa namaseli acindezelayo. Yingakho amanethiwekhi ashajayo e-DC ekhawulela izilinganiso zokushaja ku-150-350kW esikhundleni sokushaja ngokushesha okukhulu okunweba impilo yebhethri kudinga ukuphathwa okushisayo okucophelelayo.
Amalungu afanayo ebhethri alahlekelwa ukusebenza kahle ngezilinganiso zokushaja ezidlulele. Amalungu afanayo afanayo angase azuze u-95%{2}}ohamba kahle ohambeni (ikhokhiswe bese idedelwa) ngamanani aphakathi nendawo, kodwa lokhu kwehlela ku-85-90% phakathi nokushajwa okusheshayo ngenxa yokwenyuka kokumelana nokushisisa kwangaphakathi.
Real{{0}Idatha Yokusebenza Komhlaba
Ukuqonda ithiyori kubaluleke kakhulu kunemiphumela ebonakalayo. Nakhu okufinyelelwa yizinhlaka zebhethri ekusebenzeni.
I-Hornsdale Power Reserve ibonise amandla angakaze abonwe okusekelwa kwegridi. Ngesikhathi sokuhluleka kwejeneretha e-Loy Yang Power Station ngo-December 2017, amalungu afanayo athole ukwehla kwemvamisa phakathi nemizuzwana engu-0.14 futhi ajova u-7.3MW ukuze kunzinziswe igridi. Amajeneretha ayisipele avamile athathe imizuzwana engu-6 ukuphendula-izikhathi ezingama-42 ezihamba kancane. Lesi sivinini sivimbele ukwehluleka kwe-cascading obekungenza isifunda sibe mnyama.
Ukusebenza kwezezimali kufane nempumelelo yobuchwepheshe. I-Hornsdale izuze cishe izigidi ezingu-A$18 ngonyaka wayo wokuqala ngezinsizakalo zokulawula imvamisa. Isikhungo sehlise izindleko zokuzinza kwegridi yaseNingizimu Australia zisuka ku-A$470/MWh zaya ku-A$40/MWh-ukwehla okungu-91%. Ngonyaka wesibili, ukonga okuqoqiwe kwafinyelela ku-A$116 wezigidi.
Lezi zinombolo zembula inani lezomnotho lezinhlaka zebhethri ezingaphezu kwesitoreji samandla esilula. Izikhathi zokuphendula ngokushesha zibenza baqhudelane namajeneretha endabuko ezinsiza ezihambisanayo ezigcina imvamisa yegridi kanye ne-voltage. I-array isebenza ngokuyisisekelo njengesinqamuli ukushaqeka, ilungisa ukushintshashintsha ngokushesha kakhulu ukuze izitshalo ezivamile zamandla zikwazi ukubhekana nazo.
Amazinga okuwohlokakusukela-kumhlaba wangempela wedatha ekhombisa uhlu lwesikhathi eside sokuphila. Amalungu afanayo ebhethri lasekhaya le-Powerwall likaTesla agcina umthamo ocishe ube ngu-80% ngemva kweminyaka eyi-10 yokuhamba ngebhayisikili nsuku zonke. Usizo-Izilinganiso zesikali zisebenzisa ikhemistri ye-LFP zibonisa ukuphila okungcono nakakhulu-ukufakwa okuningana kweqe imijikelezo engu-8,000 ngokulahleka kwamandla okungaphansi kuka-10%.
Ukuguga kwekhalenda (ukonakala ngokuhamba kwesikhathi kungakhathaliseki ukusetshenziswa) kuthinta wonke amabhethri e-lithium-e-ion. Izinhlu ngokuvamile zilahlekelwa amandla angu-2-3% ngonyaka nanoma ingenzi lutho. Kuhlanganiswe nokuwohloka komjikelezo, ama-array amaningi aqinisekisiwe iminyaka eyi-10-15 noma inombolo ethile yemijikelezo-noma yikuphi okuza kuqala.
I-Victoria Big Battery yase-Australia, enamandla angu-300MW/450MWh, iyashaja futhi ikhishwa kabili ngosuku ukuze kwandiswe imali engenayo evela ku-arbitrage yamandla (ukuthenga amandla ashibhile{2}}aphezulu nokudayisa ngesikhathi sokufunwa okuphezulu). Ngemva kweminyaka emibili yokusebenza, ukuhlolwa komthamo kubonise kuphela ukwehla okungu-4%-okudlula izibikezelo zesiqinisekiso.
Izinhlelo Zokuphepha kanye Nokuphathwa Kokwehluleka
Izinhlaka zebhethri zigcina amandla amakhulu, zidala ukucatshangelwa kokuphepha okukhulu. Amalungu afanayo angu-100MWh aqukethe amandla angangomalitha angu-2,000 kaphethiloli. Izinhlelo zokuphepha eziyinkimbinkimbi zivimbela lawo mandla ukuthi angaphumi ngokungalawuleki.
Ukubaleka okushisayoingozi eyinhloko. Uma iseli elilodwa lishisa kakhulu lidlule izinga lokushisa elibalulekile (imvamisa engu-130-150℃ye-lithium-ion), amasekhethi amafushane angaphakathi aqala ukusabela kweketango. Iseli likhipha amagesi avuthayo, lithungele, futhi lingasakaza ukushisa kumaseli angomakhelwane. Ngohlu olugcwele ngokuqinile, lokhu kungadlulela kumakhulu amaseli.
Amalungu afanayo esimanje asebenzisa izendlalelo eziningana zokuzivikela. Isikhala esibonakalayo phakathi kwamamojula sikhawulela ukudluliswa kokushisa. Izivimbi{2}}ezikwazi ukumelana nomlilo ziqukethe ukuhluleka kwemojuli ngayinye. Amasistimu okupholisa asebenzayo agcina amazinga okushisa aphephile. Amasistimu okuthola igesi ahlonza izimpawu zakuqala zezehlakalo ezishisayo-ukwenyuka kwe-hydrogen noma i-carbon monoxide kumasignali okukhipha umoya ngaphambi kokuthi kuvele amalangabi.
Umlilo wango-Ephreli 2019 esikhungweni seMcMicken Energy Storage e-Arizona uveze ubungozi emiklamo yokuqala yebhethri. Ukulinganisa amaseli okungalungile kwakha izindawo ezishisayo, futhi ukucindezelwa komlilo okunganele kwavumela isigameko ukuba sishube. Kulimale izicishamlilo ezimbili kulokhu kuqhuma. Kusukela lapho, izindinganiso zokuhlola ze-UL 9540A zidinga ukuhlolwa kokusabalalisa okushisayo kwawo wonke-igridi yesikali samalungu afanayo.
Iseli-lokuqapha izingainikeza umugqa wokuqala wokuzivikela. Uma i-BMS ithola iseli eleqa izinga lokushisa noma imikhawulo kagesi, inqamula leyo mojula ohlwini. E-Hornsdale, imojula ngayinye kwezi-2,300 ingahlukaniswa ngokuzimela. Lokhu kuphinda kusetshenziswe kuqinisekisa ukuthi ukwehluleka kweseli elilodwa akufaki engozini yonke inhlangano engu-194MWh.
Ukunciphisa umliloezinhlelweni zebhethri ziyahluka kumasistimu ajwayelekile. Amanzi angenza kube kubi ukusha kwebhethri ye-lithium-, futhi i-CO₂ ayinakho ukusebenza kahle ngokumelene nokusabela kwamakhemikhali okunamandla. Esikhundleni salokho, ama-arrays esimanje asebenzisa izinciphisi ze-aerosol noma izinhlelo zenkungu yamanzi ezipholisa ngaphandle kwezinkinga zokuqhutshwa kukagesi. Ezinye izindawo zisebenzisa{4}}amasistimu ezikhukhula ezileveli ezifaka yonke inhlangano kugesi ongenayo.
Amaphrothokholi okunakekela abaluleke kakhulu njengehadiwe. Ukuthwebula okujwayelekile okushisayo kukhomba izindawo ezishisayo ngaphambi kokuba kwenzeke ukwehluleka. Ukuhlolwa kwamandla kuveza amaseli owonakele adinga ukushintshwa. Ukulinganisa kwamandla kagesi kuvimbela amaseli abuthakathaka ukuthi abe yizingqinamba.
I-Economics of Scaling Arrays
Ukwakha ama-array ebhethri kuhilela ukuhwebelana kwezomnotho{0}}okuthakazelisayo. Okukhudlwana akuhlali kuncono-ukulinganisa okuphelele kuncike ezinhlelweni ezithile zokusebenza nezimo zemakethe.
Izindleko zemalizehle kakhulu. Ngo-2010, amaphakethe ebhethri e-lithium{2}}abiza u-$1,200/kWh. Ngo-2024, izintengo zehle zafinyelela cishe ku-$130/kWh kumasistimu-esikalo esisetshenziswayo. Izindleko zephrojekthi ye-BloombergNEF zizofinyelela ku-$80/kWh ngo-2026, okwenza isitoreji sebhethri siqhudelane nezitshalo zegesi yemvelo ephezulu.
Lokhu kwehliswa kwezindleko kuvela esikalini sokukhiqiza, amakhemikhali athuthukisiwe, kanye nokuvuthwa kwe-supply chain. I-China iphethe ukukhiqiza, ikhiqiza ama-77% amaseli ebhethri omhlaba. Lokhu kugxila kudala ubungozi be-supply chain kodwa futhi kuqhuba ukuncintisana kwezindleko okushubile.
Umnotho wesikalikuthinta kokubili amathuluzi nokusebenza. Amalungu afanayo angu-100MWh abiza kancane nge-kWh ngayinye kunezinhla ezifanayo eziyishumi ze-10MWh ngenxa yengqalasizinda eyabiwe{3}}amasistimu okulawula, ama-transformer, ukuxhumana kwegridi. Kodwa-ke, ngaphezu kuka-200MWh, izinzuzo zezindleko eziphansi ziyancipha kuyilapho ubunzima bephrojekthi bukhula.
Ibhethri Le-Victoria Big libize cishe izigidi ezingu-A$160 ngomthamo ongu-300MW/450MWh{3}cishe u-A$350,000/MWh. Amabhethri amancane okuhlala abiza u-$500-800/kWh-ngaphezu kokuphindwe kabili ngokubiza ngeyunithi ngayinye yomthamo. Ukuthenga ngobuningi, ukufakwa okulula, nezinhlelo ezididiyelwe zichaza leli gebe.
Amamodeli wemali engenayoziyahlukahluka ngemakethe. E-Australia nase-California, ama-arrays athola imali ngamasevisi okulawula imvamisa (akhokhwa nge-MW ngayinye etholakalayo), i-arbitrage yamandla (ukuthenga okuphansi, ukuthengisa okuphezulu), kanye nezinkokhelo zamandla (ukutholakala ezimweni eziphuthumayo). Imithombo yemali ehlukahlukene yaseHornsdale iyenza ibe nenzuzo naphezu kokugcina amandla amahora angu-1.3 kuphela ngamandla aphelele.
Amanye amalungu afanayo asebenza kuzinkontileka zokwanela kwensiza{0}}ekhokhelwa ngokutholakala nje, kungakhathaliseki ukuthi kuthunyelwe noma cha. Le modeli ithanda -umthamo ophezulu, omaphakathi{3}}ukuhlelwa kwesikhathi sobude (amahora angu-4-8) angasebenza njengezigodlo ezinokwethenjelwa.
Izakhiwo zokuxhasa ngezimalikuya ngokuya kuphatha ibhethri njengempahla yengqalasizinda. Imali yephrojekthi engu-4-inzalo engu-6% yenza isisetshenziswa-sesikali sesitoreji siqhudelane nokukhiqizwa kwezinsalela. Njengoba ama-arrays amaningi abonisa ukusebenza okuthembekile konyaka 15+, isikweletu sesikhathi eside siba sishibhile, sithuthukisa ezomnotho.
Ukuthuthukiswa Kwekusasa ku-Array Technology
Ubuchwepheshe bohlu lwebhethri buthuthuka ngokushesha njengoba kuvela amakhemikhali amasha, amasistimu okuphatha, nezinhlelo zokusebenza.
Amabhethri wesimo esiqinile-zithembisa ukuminyana kwamandla aphezulu kanye nokuphepha okuthuthukisiwe ngokufaka i-electrolyte ewuketshezi ngezinto eziqinile. I-Toyota ne-QuantumScape bakha ama-arrays kusetshenziswa i-electrolyte eqinile engafinyelela ku-500 Wh/kg{2}}cishe i-lithium yamanje ephindwe kabili{3}}ukuminyana kwe-ion. Lokhu kuzovumela amalungu afanayo amancane, alula ezimotweni noma{5}}isitoreji sesikhathi eside sezinhlelo zokusebenza zegridi.
Kodwa-ke, ukukhiqiza{0}}amabhethri aqinile esikalini kusalokhu kuyinselele. Ubuchwepheshe budinga imishini yokukhiqiza ehlukene futhi bunokubekezelela okuphansi kweziphambeko kunamaseli e-electrolyte ayiketshezi. Amalungu afanayo ebhethri esimo esiqinile kwezohwebo ngeke avele kuze kube umhla ka-2026-2028.
I-ayoni-umoya ne-sodium-ionamakhemikhali aqondise ezindaweni ezahlukene. Amabhethri e-ayoni-anikezela ngezindleko eziphansi kakhulu ($20/kWh) ezinhlelweni zokusebenza ezidinga ubude besikhathi samahora angu-24-100, nakuba amandla aphansi aminyana. I-Form Energy ithumela ama-pilot array e-Minnesota nase-Maine. Izinhlaka ze-sodium-ion ziqeda ukuncika kwe-lithium futhi zenze kangcono esimweni sezulu esibandayo, zizenze zithandeke ezindaweni ezisenyakatho.
Izitshalo zamandla abonakalayohlanganisa izinkulungwane zezinhlelo zebhethri zokuhlala ezincane zibe izinsiza zesikali segridi-. I-Virtual Power Plant kaTesla eNingizimu ne-Australia ixhuma amabhethri e-Powerwall asekhaya angu-4,000, idale insiza esabalalisiwe engu-50MW. Le ndlela yengeza ukuqina kwegridi{6}}ayikho iphuzu elilodwa lokwehluleka{7}}futhi inikeza abanikazi bezindlu imali engenayo ngokwabelana ngamabhethri abo.
Ukuthunyelwa kuyakhula ngesivinini. Ukwenziwa kwesimanje kwegridi yasePuerto Rico kufaka phakathi i-1,000 MW yesitoreji sebhethri ngo-2028-ngaphezulu kwesidingo esikhulu samanje sama-900 MW. I-California igunyaza i-11,500 MW yendawo yokugcina ngo-2030. I-China yengeze u-22 GW wesitoreji sebhethri ngo-2024 kuphela.
Ingqalasizinda yokugaya kabushakumele ikhule ngokusatshalaliswa. Ibhethri elivamile le-EV ligcina umthamo ongu-70-80% ngemva kokusetshenziswa kwezimoto{4}}lisabalulekile ezinhlelweni zokusebenza zesitoreji esimile. Amalungu afanayo ebhethri lempilo yesibili anweba ukuphila okusebenzisekayo eminye iminyaka eyi-10-15 ngaphambi kokuthi kusetshenziswe kabusha kudingeke. Izinkampani ezifana neRedwood Materials zakha izinsiza zokubuyisa u-95% we-lithium, i-cobalt, ne-nickel kumabhethri amadala, okunciphisa ukuncika ezimayini.
imibuzo ejwayelekile ukubuzwa
Uyini umehluko phakathi kwebhethri neqoqo lebhethri?
Ibhethri elilodwa iseli ngalinye noma iphakethe elincane elinamandla kagesi namandla angashintshi. Uhlu lwebhethri luwuhlelo olungakala lwamabhethri amaningi axhunywe ndawonye ukuze athole amandla kagesi aphezulu, umthamo owengeziwe, noma kokubili. Izinhlu zingasukela kumaseli ayisishiyagalombili ethuluzini lamandla kuye ezinkulungwaneni zamamojula ezindaweni zokugcina igridi.
Amabhethri afanayo ahlala isikhathi esingakanani?
Izinsiza-zezilinganiso zesikali ngokuvamile zihlala iminyaka eyi-10-15 ngaphambi kokuba umthamo wehle ube ngaphansi kuka-80%. Ngokuphathwa okufanele nokuhamba ngamabhayisikili okumaphakathi, amanye amalungu afanayo afinyelela eminyakeni engama-20. Ukuwohloka kuncike kuzinga lokushisa lokusebenza, izinga lokushaja/lokukhipha, kanye nokujula kokukhipha. Ama-arrays ajikeleziswa nsuku zonke aze afike ku-90% ekujuleni kwehle ngokushesha kunalawo amabhayisikili aye ku-50%.
Ungakwazi yini ukuhlanganisa izinhlobo ezahlukene zebhethri ohlwini?
Cha. Ukuxuba izinhlobo zebhethri, ubudala, noma amandla ohlwini kubangela ukungalingani okunciphisa ukusebenza futhi kudale izingozi zokuphepha. Wonke amabhethri ohlwini kufanele afane{2}}amakhemikhali afanayo, umthamo, i-voltage, futhi mhlawumbe asuke kunqwaba yokukhiqiza efanayo. Amakhemistri ahlukene anezici ezihlukene ze-voltage nokumelana kwangaphakathi, okwenza ukusebenza okulinganiselayo kungenzeki.
Kwenzekani uma ibhethri elilodwa lihluleka ohlwini?
Ekucushweni kochungechunge, iseli elihlulekile lingamisa ukugeleza kwamanje kuleyo yunithi yezinhlamvu, yehlise inani lamalungu afanayo. Ekuhlelweni okufanayo, amanye amayunithi ezinhlamvu ayaqhubeka nokusebenza ngomthamo oncishisiwe. Amalungu afanayo esimanje asebenzisa amadizayini amamojula lapho i-BMS ingahlukanisa amamojula ahlulekile. Lokhu kuphinda kusetshenziswe kusho ukuthi ukwehluleka kweseli elilodwa akulivimbi lonke iqembu{3}}kuvele kwehlise umthamo kuze kube yilapho kushintshwa imojuli engalungile.
Ukwenza Ama-Arrays Asebenzele Isicelo Sakho
Amalungu afanayo ebhethri aphumelele uma yakhelwe izidingo ezithile kunokucaciswa okuvamile. Isistimu sonozungezilanga yasekhaya idinga izici ezihlukahlukene ezihlukene kunemoto kagesi noma indawo yokugcina igridi.
Qala ngokuchaza amapharamitha amathathu: i-voltage edingekayo, umthamo odingekayo, kanye nephrofayili yokukhipha. Isistimu yelanga engu-48V idinga amabhethri alungiselelwe ukuthi akhiphe okungu-48V okuzisholo. Uma udinga u-10 kWh wesitoreji, hlukanisa ngamandla kagesi: 10,000 Wh ÷ 48V=208 umthamo we-Ah odingekayo.
Okulandelayo, khetha imininingwane yeseli efanele. Amabhethri e-lithium ajwayelekile angu-12V afika ngamandla ukusuka ku-50Ah ukuya ku-200Ah. Amabhethri amane angu-12V 52Ah ochungechungeni adala i-48V 52Ah (2.5 kWh). Ukuze ufinyelele ku-10 kWh, uzodinga izintambo ezine ezifanayo zochungechunge olune lwamabhethri-amabhethri angu-16 esewonke ekucushweni kwe-4s4p.
Cabangela amanani okukhishwa. Uma uhlelo lwakho lokusebenza ludinga amandla aphezulu angu-5 kW, amalungu afanayo kufanele alethe u-5000W ÷ 48V=104A. Iyunithi yezinhlamvu ze-4s ngayinye inikeza isilinganiso samanje sebhethri elilodwa. Uma ibhethri ngalinye lilinganisa ukukhishwa okuqhubekayo okungu-50A, udinga izintambo ezintathu kuphela ezihambisanayo, hhayi ezine. Amalungu afanayo azoba ngu-4s3p namabhethri ayi-12.
Ukuphatha izinga lokushisa kuvame ukunquma impumelelo noma ukwehluleka. Amabhethri asebenza kabi ngaphansi kwedigri engu-0 futhi ehla ngokushesha ngaphezu kwamadigri angu-40. Izicelo ezisebenza ngaphandle zidinga ukushisisa ezindaweni ezibandayo kanye nokupholisa kwezishisayo. Ngisho nezicelo ezimaphakathi ziyazuza ekuvaleni okuvalekile kanye nomoya omncane ogcina i-15-25℃.
Gada amasistimu eduze phakathi nokusebenza kokuqala. I-cell voltage drift emasontweni okuqala iveza ukungahambisani kokukhiqiza. Bhekana nokungalingani kusenesikhathi ngokushintshwa kweseli noma ukulinganisa okusebenzayo kunokuvumela amaseli abuthaka ehlise ukusebenza kohlelo.
I-modularity yamalungu afanayo ebhethri amandla awo amakhulu. Ungaqala kancane futhi unwebe ngokuqhubekayo, wengeze izintambo ezihambisanayo ukuze uthole umthamo owengeziwe noma amayunithi ezinhlamvu zochungechunge ukuze uthole i-voltage ephezulu. Lokhu kukhula kwenza ama-arrays afinyeleleke ngokomnotho ngisho nasezinhlelweni ezingase zikhule ngokuhamba kwesikhathi.
Imithombo
I-US Energy Information Administration - Idatha Yekhono Lokugcina Ibhethri (2024-2025)
I-International Energy Agency - I-Global EV Outlook 2024: Okuthrendayo Kumabhethri Emoto Kagesi
Ucwaningo lwe-Grand View - Usayizi Wemakethe Yebhethri, Ukwabelana Nombiko Wokukhula (2024-2030)
I-Pennsylvania State University EME 812 - Ukusetshenziswa Kwesikali Sesikali Esisetshenziswayo: I-Battery Arrays
I-Battery University - BU-302: Uchungechunge Nokucushwa Kwebhethri Elifanayo
Idatha yokusebenza ye-Hornsdale Power Reserve - Neoen/Tesla (2017-2023)
Izinto Zamandla Athuthukile - Izinselele Eziyinhloko Zegridi{1}}I-Scale Lithium{2}}Isitoreji Samandla Ebhethri Le-Ion (2022)
I-Nature Communications - I-Sensor Arrays Ehlanganisiwe Ephrinteka Ngokugcwele Ye-Lithium{1}}Amabhethri e-Ion (2025)
Amandla e-MDPI - Amasistimu Okuphatha Ibhethri: Izinselele Nezixazululo (2020)
I-Clean Air Task Force - I-Battery Storage Economics kanye Nokuhlaziywa Kokuhlanganiswa Kwegridi
Izihloko Ezihlobene
Amasistimu Okuphatha Ibhethri (BMS)
I-Lithium-i-ion vs Lead{1}}Ukuqhathaniswa Kwebhethri ye-asidi
Igridi-Izixazululo Zesitoreji Samandla
I-Electric Vehicle Battery Pack Design
I-Solar-plus-Ukucushwa Kwesistimu Yesitoreji
Ukuwohloka kwebhethri kanye nokuphathwa kwe-Lifecycle
