Ii-capacitors zineempawu ezininzi ezintle. Zigcina umbane njengetshaji yombane endaweni yamandla eekhemikhali, okokuqala. Oku kudla ngokuvumela amaxesha okutshajisa akhawulezileyo kunye nemisinga yokukhupha ephezulu kakhulu. Zinokusinda kumakhulu amawaka emijikelo yokukhupha itshaji, endaweni yamakhulu emijikelo yeebhetri ezijikelezileyo. Ngoko ke yintoni ingxaki?
Ibhetri inika i-voltage engaguqukiyo ixesha elide. Ngokuxhomekeke kwisixhobo, unokuba neengxaki zokusebenza eziphantse ziphele. Iifowuni, umzekelo, zingena kwimo yokonga umbane. Oko akupheleli nje ekuzigcineni zisebenza ixesha elide, kodwa kukuthintela ukucima kwangoko ngaphandle kwesilumkiso.
Njengoko ubona, i-voltage iyehla njengoko ibhetri isondela ekudinweni. Kwifowuni yakho, kukho isekethe yokuguqula amandla, inxalenye yolawulo lwamandla iyonke, esebenza ukuguqula amandla ebhetri angaguqukiyo abe ngamandla enkqubo alawulwa ngokuqinileyo (mhlawumbi iqela lee-voltage ezahlukeneyo). Qaphela ukuba kukho ubudlelwane obubalulekileyo apha: amandla=i-voltage yangoku. Ngoko ke ukugcina amandla afanayo, njengoko i-voltage iyehla, isekethe yam kufuneka itsale i-current engaphezulu.
Ibhetri nganye inokumelana okuncinci ngaphakathi, kwaye ngenxa yolunye ulwalamano, olubizwa ngokuba yi-Ohm's Law, uyazi ukuba kuya kubakho i-voltage ethile ewayo kwibhetri. Kumzobo, i-Vout=V0−r∗I, apho mna ndingumsinga. Ngoko ke, njengoko i-V0 yam iwa kwaye isekethe yam yolawulo lwamandla kufuneka itsale umsinga ongaphezulu ukuze inike amandla afanayo, i-voltage yemveliso yebhetri yehla ngokukhawuleza nangakumbi. Oku kunciphisa umbane ophezulu webhetri, kwaye kuthetha ukuba ziyawa ngokukhawuleza xa ziphantse zadinwa.
Kodwa i-output voltage, i-peak current, kunye namandla apheleleyo kwi-capacitor ziyehla ngokukhawuleza ngokuhamba kwexesha. I-capacitor inenzuzo enye: igcina i-electrical charge, endaweni yokuguqula i-electrical charge ibe yi-chemical charge njengakwibhetri, ngoko ke nangona kukho ukumelana kwangaphakathi, incinci kwaye idla ngokunganakwa. Ii-capacitors zinokubonelela nge-currents ephezulu kakhulu ixesha elifutshane.
Kodwa xa ndinika amandla into ethile, ziyingxaki. Khumbula umnqweno wam wokugcina umbane ungaguqukiyo ungena kwinkqubo yam yokulawula umbane, kwaye loo mandla=i-voltage yangoku. Njengoko i-voltage yethu yehla ngokukhawuleza, kufuneka siyilungise nge-current enyuka ngokukhawuleza ukuze sinike amandla afanayo. I-currents ephezulu kakhulu yenza i-circuit ebiza kakhulu, izinto ezinkulu zokuguqula umbane, ukulahleka kwamandla amaninzi kwiibhodi zesekethe, njl.njl. ingxaki efanayo esisiseko ibhetri enayo kufutshane nokuphela kwayo, kodwa oku kuqala ukwenzeka kwangethuba kakhulu kubomi bokugcina umbane obuluncedo be-capacitor. Kwaye njengoko i-capacitor iphela, i-peak current, nangona isephezulu, nayo iyehla.
Enye ingxaki kukuba ii-ultracapacitors zanamhlanje zinamandla aphantsi kakhulu kuneebhetri. Ii-ultracaps ezilungileyo kwimarike zilawula i-8-10 Wh/kg, uninzi lwazo lufana ne-5 Wh/kg. Iibhetri zeLi-ion ezilungileyo zibonelela kufutshane ne-200 Wh/kg, iifomyula ezininzi zinokufikelela ngaphezulu kwe-100 Wh/kg. Ngoko ke udinga ubunzima obuphindwe ka-20 ukuze usebenzise ii-ultracaps. Kodwa mhlawumbi ngaphezulu, kuba ngaxa lithile ngexesha lokukhupha, kuxhomekeke ekusetyenzisweni, i-voltage iya kwehla kakhulu ukuba ingasetyenziswa, ishiye amandla engasetyenziswa. Kwakhona, ngokungafaniyo nee-capacitors zemveli, ii-ultracapacitors nazo zinokumelana okuphezulu kwangaphakathi. Ngoko ke azinakuxhasa urhwebo olukhulu lwe-voltage yangoku.
Emva koko kukho ukuzikhupha: amandla akhawuleza kangakanani “ukuvuza” kwisixhobo sokugcina. Iiseli zeNiMh zodwa ziqinile, kodwa ukuzikhupha kwazo kuphezulu ukuya kuma-20–30% ngenyanga. Iiseli zeLi-ion zinciphisa oku kube ngaphezulu kwe-<2% ngenyanga kuxhomekeke kubuchwepheshe obuthile beLi-ion, mhlawumbi i-3% kwezinye iinkqubo kuxhomekeke kwixabiso lokujonga ibhetri. Ii-Ultracapacitors zanamhlanje zehla ukuya kuma-50% etshaji kwinyanga yokuqala. Oko kusenokungabalulekanga kwisixhobo esitshajiswayo imihla ngemihla, kodwa kunciphisa ngokupheleleyo ukusetyenziswa kweekhephu xa kuthelekiswa neebhetri, ubuncinci de kwenziwe uyilo olungcono.
Kwaye kuba ufuna ezininzi kangaka, ixabiso langoku lee-ultracapacitors linokuba yi-6x-20x ixabiso leebhetri. Ukuba usetyenziso lwakho lufuna amandla amancinci kakhulu, ingakumbi xa kukho amandla aphezulu kakhulu, i-ultracap inokuba lukhetho. Ngaphandle koko, ayizukuba yindlela yokutshintsha ibhetri kungekudala.
Kwizicelo zamandla aphezulu njengeemoto zombane, akukabi yinto eluncedo kangako okwangoku, njengesixhobo esizimeleyo. Nangona iinkqubo ezisebenzisa ii-ultracaps kunye neebhetri zinokuba nomtsalane, kuba umahluko wazo uyahambelana kakhulu, ukudluliselwa kwamandla aphezulu kunye nobomi obude besiciko xa kuthelekiswa nobuninzi bamandla/amandla athile ebhetri. Kwaye kukho umsebenzi omninzi owenziwayo ukuhambisa ii-ultracapacitors ezingcono kakhulu, kunye neebhetri ezingcono kakhulu. Ngoko mhlawumbi ngenye imini i-ultracap ithatha eminye imisebenzi yebhetri eqhelekileyo.
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Ixesha leposi: Jan-06-2026