Ngaba ukutshaja kweDC kuyayithoba ibhetri?

Ukwanda kweteknoloji yokutshaja ngokukhawuleza, ngakumbi i-DC (Direct Current) fast charging, kuyitshintshile indlela esiwasebenzisa ngayo amandla izixhobo zethu—ukusuka kwiifowuni eziphathwayo ukuya kwizithuthi zombane (ii-EV). Nangona ukutshaja kwe-DC kunika lula ukugcwalisa amanqanaba ebhetri ngokukhawuleza, kusaxhalabile malunga nempembelelo yayo yexesha elide kwimpilo yebhetri. Ngaba ukutshaja kwe-DC kuyawohloka amabhetri ngokukhawuleza kunokutshaja kwe-AC (Alternating Current) eqhelekileyo? Eli nqaku liphonononga isayensi engasemva kokuwohloka kwebhetri, iziphumo zokutshaja ngokukhawuleza kwe-DC, kunye nendlela yokunciphisa umonakalo onokubakho ukwandisa ubomi bebhetri.

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Ukuqonda Iziseko Zebhetri: Indlela Esebenza Ngayo Ukutshaja

Ngaphambi kokuba ujonge kwimiphumo yokutshaja kweDC, kubalulekile ukuqonda indlela iibhetri ezitshaja nezikhupha ngayo.

1. I-Chemistry yeBhetri: Ulawulo lweLithium-Ion

Iibhetri ezininzi zanamhlanje ezinokutshajwa kwakhona, kuquka ezo zikwii-smartphones, ii-laptops, kunye nee-EV, ziyasetyenziswai-lithium-ion (i-Li-ion)okanyei-lithium-polymer (i-LiPo)ikhemistri. Ezi bhetri zisebenza ngokuhambisa ii-ion ze-lithium phakathii-cathode elungileyo(ngesiqhelo i-lithium cobalt oxide, i-lithium iron phosphate, okanye into efanayo) kunye ne-i-anode engalunganga(ngesiqhelo yigraphite).

2. Ukutshaja kwe-AC vs. DC: Umahluko oPhambili

• Ukutshaja kwe-AC (Ukutshaja okucothayo/okuqhelekileyo):
  • Isebenzisa umbane otshintshanayo ovela kwiiplagi zodonga.
  • Itshaja yangaphakathi yesixhobo iguqula i-AC ibe yi-DC ngesantya esilawulwayo (umz., i-5W-30W kwiifowuni, ukuya kuthi ga kwi-7kW kwii-EV).
  • Ngokwesiqhelo ithatha kancinci kodwa ithambile kwimpilo yebhetri.
• Ukutshaja okukhawulezayo kwe-DC (Ukutshaja okukhawulezayo):
  • Ihambisa umbane ngqo ngqo kwibhetri, idlula i-converter yangaphakathi.
  • Isebenza kumanqanaba aphezulu kakhulu ombane (umz., 50W-120W kwiifowuni, 50kW-350kW kwii-EV).
  • Inciphisa kakhulu ixesha lokutshaja kodwa ivelisa ubushushu kunye noxinzelelo olungakumbi.

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Indlela iDC Fast Charging echaphazela ngayo impilo yebhetri

Nangona ukutshaja kwe-DC kulula, zininzi izinto ezibangela ukuwohloka kwebhetri ngokukhawuleza:

1. Ukuveliswa kobushushu: Ingxaki eyintloko

• Ukutshaja kombane ophezulu kwandisa ukumelana kwangaphakathi, nto leyo ebangela ubushushu obugqithisileyo.
• Ubushushu buyakhawulezaukuqhekeka kwe-electrolytekwayeukukhula komaleko we-solid electrolyte interface (SEI), ukunciphisa ukusebenza kakuhle.
• Ukuvezwa ixesha elide kumaqondo obushushu aphezulu kunokubangelaukubaleka kobushushu, imeko eyingozi apho iibhetri zishushu kakhulu kwaye zinokubamba umlilo.

2. Uxinzelelo lwangaphakathi olukhulayo

• Ukutshaja ngokukhawuleza kunyanzela ii-ion ze-lithium ukuba zihambe ngokukhawuleza, nto leyo ekhokelela ekubeniuxinzelelo loomatshinikwi-anode nakwi-cathode.
• Ekuhambeni kwexesha, oku kunokubangelaukuqhekeka kwe-electrode, ukunciphisa amandla.

3. I-Lithium Plating: Ingozi Efihlakeleyo

• Xa isantya sokutshaja siphezulu, ii-ion ze-lithium zinokubaipleyiti(faka njengesinyithi) kwi-anode endaweni yokudibanisa (ukufaka) ngokufanelekileyo.
• I-lithium plating inciphisa amandla ebhetri kwaye inokwenzaiisekethe ezimfutshane zangaphakathi, okwandisa umngcipheko wokungaphumeleli.

4. Impembelelo yeMeko yoTshato (i-SoC)

• Ukutshaja ibhetri ukuya100% rhoqo(ingakumbi xa itshaja ngokukhawuleza) icinezela iiseli.
• Ngokufanayo,ukukhupha okunzulu (ngaphantsi kwama-20%)ukukhawulezisa ukuguguleka.
• Uninzi lweenkqubo zolawulo lwebhetri (ii-BMS) ziyayinciphisa le nto ngokunciphisa ukutshaja ngokukhawuleza okungaphezulu80%.

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Izifundo Zesayensi kunye Nedatha Yehlabathi Lokwenyani

1. Ukonakala kwebhetri yefowuni

• AUphononongo luka-2020 yiBattery Universityufumanise ukuba:
  • Itshaja e1C (itshaja epheleleyo kwiyure e-1)kunciphisa ubomi nge ~20% emva kwemijikelo engama-500.
  • Itshaja e2C (ukutshaja kwemizuzu engama-30)inokunciphisa ubomi ngo30-40%.
• I-Apple kunye ne-Samsung ziphucula ukutshaja ngokukhawuleza ukuze konakale kancinci, kodwa ukutshaja rhoqo kwe-DC kusabangela ukuguguleka.

2. Impembelelo yebhetri yeSithuthi soMbane

• Idatha kaTeslaicebisa ukuba i-Supercharging rhoqo (i-DC fast charging) inokonakalisa iibhetriI-10-15% ngokukhawulezakunokutshaja kweNqanaba lesi-2 (AC).
• Igqabi leNissanIzifundo zifumanise ukuba ukutshaja rhoqo kwe-DC kunciphisa amandla~3% ngaphezulu ngonyakaxa kuthelekiswa nokutshaja kancinci.
• Nangona kunjalo, ii-EV zanamhlanje ezineiinkqubo zokupholisa ezisebenzayo(njengokupholisa ulwelo kweTesla) kunciphisa umonakalo wobushushu ngcono kuneemodeli ezindala ezipholileyo ngomoya.

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Indlela Yokunciphisa Ukonakala Kokutshaja kweDC

Nangona ukutshaja ngokukhawuleza kwe-DC ngamanye amaxesha kungaphepheki, la maqhinga anokunceda ukugcina ubomi bebhetri:

1. Kuphephe ukutshaja rhoqo ngokukhawuleza

• Sebenzisaukutshaja kwe-AC okucothayokwiimfuno zemihla ngemihla.
• Gcina i-DC itshaja ngokukhawuleza xa kukho iingxaki ezingxamisekileyo okanye uhambo olude.

2. Gcina ibhetri phakathi kwe-20%-80%

• Uninzi lokuwohloka kwenzeka kumanqanaba aphezulu okutshaja (0% okanye 100%).
• Ezinye ii-EV kunye neefowuni ziyabonelelaUseto "lomda wokutshaja"ukufikelela kwinqanaba eliphantsi kwi-80-90%.

3. Thintela Ubushushu Obugqithisileyo

• Kuphephe ukutshaja ngaphakathiiindawo ezishushu(umz., ukukhanya kwelanga ngqo).
• Kwizithuthi zombane,ibhetri kufuneka ilungiswe kwangaphambili(yipholise ngaphambi kokuba uyitshaje ngokukhawuleza).
• Kwiifowuni, susa iibhokisi ezinkulu xa utshaja ngokukhawuleza.

4. Sebenzisa iimpawu zokutshaja ezikrelekrele

• "Ukutshaja Okucwangcisiweyo" kukaTeslaiyalibazisa ukutshaja ide iqondo lobushushu lebhetri libe lifanelekileyo.
• "Ukutshaja kwebhetri okuphuculweyo" kwe-iPhoneinciphisa ukutshaja ubusuku bonke ukuze inciphise uxinzelelo.

5. Tshintsha iibhetri xa kufuneka

• Uninzi lweebhetri zeLi-ion zihlala ixesha elideIminyaka emi-2-3 (iifowuni)okanyeIminyaka eyi-8-10 (ii-EV)ngaphambi kokuwohloka okukhulu.
• Ukuba umthamo wehla ngaphantsi70-80%, cinga ngokutshintsha.

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Isiphelo: Ngaba ukutshaja kwe-DC akulunganga kwiibhetri?

Ewe, kodwa ngesilumkiso.Ukutshaja ngokukhawuleza kwe-DCingabaUkuhla kweebhetri ngokukhawuleza kunokutshaja kwe-AC okucothayo ngenxa yobushushu, uxinzelelo, kunye ne-lithium plating. Nangona kunjalo, iinkqubo zolawulo lweebhetri zanamhlanje kunye nolawulo lobushushu zinceda ekunciphiseni umonakalo.

Izinto ezibalulekileyo ekufuneka uziqwalasele:

✅Ukutshaja ngokukhawuleza kwe-DC ngamanye amaxesha kulungilekodwa akufuneki ibe yindlela ephambili.

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Ixesha leposi: Meyi-12-2025