Ingabe Ukushaja kwe-DC Kuyalinciphisa Ibhethri?

Ukwanda kobuchwepheshe bokushaja okusheshayo, ikakhulukazi ukushaja okusheshayo kwe-DC (Direct Current), kushintshe indlela esinika ngayo amandla amadivayisi ethu—kusukela kuma-smartphone kuya ezimotweni zikagesi (EV). Nakuba ukushaja kwe-DC kunikeza lula amazinga ebhethri agcwalisa ngokushesha, ukukhathazeka kuyaqhubeka mayelana nomthelela wayo wesikhathi eside empilweni yebhethri. Ingabe ukushaja kwe-DC empeleni kuyawohloza amabhethri ngokushesha kunokushaja okuvamile kwe-AC (Alternating Current)? Lesi sihloko sihlola isayensi ngemuva kokuwohloka kwebhethri, imiphumela yokushaja okusheshayo kwe-DC, kanye nendlela yokunciphisa umonakalo ongaba khona ukuze kwandiswe isikhathi sokuphila kwebhethri.

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Ukuqonda Izisekelo Zebhethri: Indlela Ukushaja Okusebenza Ngayo

Ngaphambi kokubheka imiphumela yokushaja kwe-DC, kubalulekile ukuqonda ukuthi amabhethri ashaja futhi akhipha kanjani.

1. I-Chemistry yebhethri: Ukubusa kwe-Lithium-Ion

Amabhethri amaningi esimanje ashajwayo, okuhlanganisa nalawo akwi-smartphone, ama-laptop, kanye nama-EV, ayasetshenziswai-lithium-ion (i-Li-ion)nomai-lithium-polymer (i-LiPo)ikhemistri. Lawa mabhethri asebenza ngokuhambisa ama-ion e-lithium phakathi kwe-i-cathode enhle(ngokuvamile i-lithium cobalt oxide, i-lithium iron phosphate, noma okufanayo) kanye ne-ai-anode engalungile(ngokuvamile i-graphite).

2. Ukushaja kwe-AC vs. DC: Umehluko Obalulekile

• Ukushaja kwe-AC (Ukushaja Okuhamba Kancane/Okujwayelekile):
  • Isebenzisa ugesi oshintshashintshayo ovela ezingosini zodonga.
  • Ishaja yangaphakathi yedivayisi iguqula i-AC ibe yi-DC ngesivinini esilawulwayo (isb., 5W-30W yamafoni, kufika ku-7kW yama-EV).
  • Ngokuvamile kuhamba kancane kodwa kuthambile empilweni yebhethri.
• Ukushaja Okusheshayo kwe-DC (Ukushaja Okusheshayo):
  • Iletha ugesi oqondile ngqo ebhethri, idlula i-converter yangaphakathi.
  • Isebenza emazingeni aphezulu kakhulu wamandla (isb., 50W-120W yamafoni, 50kW-350kW yama-EV).
  • Kunciphisa kakhulu isikhathi sokushaja kodwa kudala ukushisa okwengeziwe kanye nokucindezeleka.

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Indlela Ukushaja Okusheshayo kwe-DC Okuthinta Ngayo Impilo Yebhethri

Nakuba ukushaja kwe-DC kulula, kunezici eziningana ezibangela ukuwohloka kwebhethri okusheshayo:

1. Ukukhiqiza Ukushisa: Isici Esiyinhloko

• Ukushaja kwamandla aphezulu kwandisa ukumelana kwangaphakathi, okukhiqiza ukushisa okweqile.
• Ukushisa kuyasheshaukuwohloka kwe-electrolytefuthiukukhula kwesendlalelo se-solid electrolyte interface (SEI), ukunciphisa ukusebenza kahle.
• Ukuchayeka isikhathi eside emazingeni okushisa aphezulu kungabangelaukubaleka okushisayo, isimo esiyingozi lapho amabhethri eshisa ngokweqile futhi angabamba umlilo.

2. Ukucindezeleka Kwangaphakathi Okwandayo

• Ukushaja okusheshayo kuphoqa ama-ion e-lithium ukuthi ahambe ngokushesha, okuholela ekutheniukucindezeleka komshiniku-anode kanye ne-cathode.
• Ngokuhamba kwesikhathi, lokhu kungabangelaukuqhekeka kwe-electrode, ukunciphisa amandla.

3. I-Lithium Plating: Ingozi Efihliwe

• Uma ijubane lokushaja liphezulu, ama-ion e-lithium angaseipuleti(faka njengensimbi) ku-anode esikhundleni sokuxhumanisa (ukushumeka) kahle.
• I-lithium plating yehlisa umthamo webhethri futhi ingadalaizifunda ezimfushane zangaphakathi, okwandisa ingozi yokwehluleka.

4. Umthelela Wesimo Secala (SoC)

• Ukushaja ibhethri ku100% njalo(ikakhulukazi ngokushaja okusheshayo kwe-DC) kucindezela amaseli.
• Ngokufanayo,ukuphuma okujulile (ngaphansi kuka-20%)ukusheshisa ukuguguleka.
• Izinhlelo eziningi zokuphatha amabhethri (i-BMS) zinciphisa lokhu ngokunciphisa ukushaja okusheshayo okungenhla80%.

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Izifundo Zesayensi kanye Nedatha Yomhlaba Wangempela

1. Ukuwohloka Kwebhethri Le-Smartphone

• AUcwaningo lwango-2020 olwenziwe yiBattery Universitybathole ukuthi:
  • Ishaja ku-1C (ukushaja okugcwele ngehora eli-1)kunciphisa isikhathi sokuphila ngo-~20% ngemva kwemijikelezo engu-500.
  • Ishaja ku-2C (ukushaja kwemizuzu engama-30)inganciphisa isikhathi sokuphila ngo30-40%.
• I-Apple ne-Samsung zithuthukisa ukushaja okusheshayo ukuze kunciphe ukuwohloka, kodwa ukushaja njalo kwe-DC kusabangela ukuguguleka.

2. Umthelela Webhethri Lemoto Kagesi

• Idatha kaTeslakusikisela ukuthi i-frequency Supercharging (DC fast charge) ingalimaza amabhethriNgokushesha ngo-10-15%kunokushaja kweLeveli 2 (AC).
• I-Nissan Leafizifundo zithole ukuthi ukushaja okuvamile kwe-DC kunciphisa amandla~3% ngaphezulu ngonyakauma kuqhathaniswa nokushaja okuhamba kancane.
• Kodwa-ke, ama-EV anamuhla ane-izinhlelo zokupholisa ezisebenzayo(njengokupholisa uketshezi kweTesla) kunciphisa umonakalo wokushisa kangcono kunamamodeli amadala apholile emoyeni.

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Indlela Yokunciphisa Ukuwohloka Kokushaja Kwe-DC

Nakuba ngezinye izikhathi ukushaja okusheshayo kwe-DC kungenakugwenywa, lawa macebo angasiza ekulondolozeni impilo yebhethri:

1. Gwema Ukushaja Okusheshayo Okuvamile

• Sebenzisaukushaja kwe-AC okuhamba kancanengezidingo zansuku zonke.
• Bhukha i-DC ngokushesha uma kunesidingo esiphuthumayo noma uhambo olude.

2. Gcina ibhethri liphakathi kuka-20%-80%

• Ukuwohloka okuningi kwenzeka emazingeni aphezulu okushaja (0% noma 100%).
• Amanye ama-EV namafoni anikezaIzilungiselelo "zomkhawulo weshaja"umkhawulo wokushisa ngu-80-90%.

3. Vimbela Ukushisa Okudlulele

• Gwema ukushaja ngaphakathiizindawo ezishisayo(isib., ukukhanya kwelanga okuqondile).
• Kwama-EV,ibhethri kufanele libekwe kusengaphambili(yipholise ngaphambi kokushaja ngokushesha).
• Kumafoni, susa amakesi amakhulu ngesikhathi sokushaja okusheshayo.

4. Sebenzisa Izici Zokushaja Ezihlakaniphile

• “Ukushaja Okuhleliwe” kukaTeslaibambezela ukushaja kuze kube yilapho amazinga okushisa ebhethri esesezingeni eliphezulu.
• "Ukushaja Ibhethri Okulungiselelwe" kwe-iPhoneinciphisa ukushaja ubusuku bonke ukuze inciphise ukucindezeleka.

5. Shintsha Amabhethri Uma Kudingeka

• Amabhethri amaningi e-Li-ion ahlala isikhathi esideIminyaka engu-2-3 (amafoni)nomaIminyaka engu-8-10 (ama-EV)ngaphambi kokuwohloka okukhulu.
• Uma umthamo wehla ngaphansi70-80%, cabanga ngokufaka okunye esikhundleni salokho.

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Isiphetho: Ingabe Ukushaja kwe-DC Kubi Kumabhethri?

Yebo, kodwa ngezixwayiso.Ukushaja okusheshayo kwe-DCingabeukwehlisa amabhethri ngokushesha kunokushaja kwe-AC okuhamba kancane ngenxa yokushisa, ukucindezeleka, kanye ne-lithium plating. Kodwa-ke, izinhlelo zokuphatha amabhethri zesimanje kanye nezilawuli zokushisa ziyasiza ekunciphiseni umonakalo.

Izinto Ezibalulekile Okufanele Uzicabangele:

✅Ukushaja okusheshayo kwe-DC ngezikhathi ezithile kulungilekodwa akufanele kube yindlela eyinhloko.

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Isikhathi sokuthunyelwe: Meyi-12-2025