I-Voltage: Isihluthulelo Esifihliwe Sokuvula Ulwazi Olungcono Lokushaja I-EV

Uma abashayeli be-EV bekhuluma ngokushaja, "isivinini" sihlala siyinhloko. Kodwa ipharamitha yangempela yobuchwepheshe ngemuva kokushaja okusheshayo ingaphezu nje kwesilinganiso samandla. I-Voltage yiyo ekugcineni echaza umkhawulo ophezulu wokusebenza kahle kokushaja, ithonya impilo yebhethri yesikhathi eside, futhi ibumba ngisho nezindlela zobuchwepheshe zesikhathi esizayo.
Lesi sihloko sichaza i-physics ngemuva kwe-voltage—futhi sibonisa ukuthi ithinta kanjani yonke iseshini yokushaja oyitholayo.

(Umthombo Wesithombe: UMnyango Wezokuthutha wase-US)

1. Ukugxuma Kokusebenza Kahle — Kungani i-800V Yaba Yindawo Yobuchwepheshe

Ngokusho kwe-physics eyisisekelo, amandla (P) = i-voltage (V) × yamanje (A).
Ukuze wandise amandla okushaja, ungakhuphula i-voltage noma ucindezele i-current eyengeziwe. Kodwa i-current ephezulu iletha izinkinga ezinkulu: izintambo ezijiyile, ukushisa okwengeziwe, kanye nokulahlekelwa amandla okuphezulu. Lokhu kwenza ukuphakama kwe-voltage kube yindlela yokuthuthukisa ephumelela kakhulu.

Yingakho amapulatifomu e-800V aphezulu kagesi ebhekwa kabanzi njengesikhathi sokushintsha kobuchwepheshe be-EV.
Cabanga ngePorsche Taycan—enye yama-EV angu-800V okuqala akhiqizwa ngobuningi. Uhlelo lwayo lusekela amandla okushaja afinyelela ku-320 kW. Okubaluleke kakhulu, ngesikhathi esifanayo sokudlulisa amandla, amandla kagesi angancishiswa ngesigamu, okunciphisa kakhulu ukulahlekelwa ukushisa futhi kuthuthukise ukusebenza kahle kokushaja.

Umphumela uba ulwazi lomsebenzisi olungcono ngokusobala: i-Taycan ingashaja kusukela ku-10% kuya ku-80% ngemali encane njenge imizuzu eyi-18kushaja esheshayo kakhulu engu-800V.

(Umthombo Wesithombe: I-Capital One Auto Navigator)

2. Ukushintshana Kokuhambisana — Ukuhlakanipha Nezindleko “Zokuhambisana Okuphansi”

Inselele namuhla ukuthi ama-EV anamandla angu-800V awakwazi ukuthola njalo amashaja anamandla aphezulu afanayo.
Isibonelo esihle yiHyundai IONIQ 5. Nakuba imoto isekela ukushaja okungu-800V, iziteshi eziningi zeTesla Supercharger V3 ziletha cishe ama-V angu-500.
Ukuze ivumelane nezimo, imoto kumele isebenzise i-converter yayo yangaphakathi ye-DC/DC bese “yehlisa” i-voltage iye ku-400V—kuncishiswe amandla okushaja aphezulu abe cishe 135 kW, ngaphansi kakhulu kwamandla ayo aphezulu angu-257 kW.

Lokhu kuhambisana okuphansi kuwubunjiniyela obuhlakaniphile—kodwa kuza nokulahlekelwa ukusebenza.
Futhi lo mkhawulo usheshisa ukushintshela kwemboni kuya engqalasizinda yokushaja yomphakathi enamandla aphezulu.

3. Imingcele Yokuphepha — Imikhawulo Ephelele Yokukala I-Voltage

Njengoba amazinga kagesi ekhuphuka, ukuphepha kuba umugqa obomvu ongaxoxiswana ngawo.
I-voltage ephezulu ibeka izidingo eziqinile zokushisa, ukuphathwa kokushisa, kanye nokuqapha ngesikhathi sangempela.

I-IEC 61851 ichaza imikhawulo ecacile:

• Kufika ku-1000V AC
• Kufika ku-1500V DC

Ngesikhathi esifanayo, uhlaka lwakamuva lokuqinisekisa i-CCTA manje seluhlanganisa 150V–1000V, futhi ubeka isisekelo sezinhlelo zokushaja zesigaba sama-megawatt zesikhathi esizayo.

Lezi zindinganiso zakha ndawonye “izithiyo zokuvikela” eziqinisekisa ukuthi ukushaja okusheshayo akulokothi kubeke engcupheni ukuphepha.

(Umthombo Wesithombe: ANSI WEBSTORE)

4.Ikusasa — Ngale Kwevolumu Ephakeme, Kubheke Kuvolumu Ehlakaniphile

Isigaba esilandelayo somncintiswano akusikho nje ukuphakamisa amapulatifomu kagesi kusuka ku-400V kuya ku-800V nangaphezulu.
Inani langempela lilele ku ukuphathwa kwamandla kagesi okuhlakaniphile:

• Ukulawula i-BMS okunembile
  Amazinga okushelela kwamandla kagesi alungiswa kahle ngesikhathi sokugcina sokushaja ukuze kulinganiswe isivinini kanye nobude bebhethri.
• Ukuxhumanisa ishaja nemoto
  Ukuxhumana kwesikhathi sangempela phakathi kweshaja kanye ne-BMS yemoto ukuze kwakheke ijika lokushaja elifanele.
• Ukuzivumelanisa nezimo kuzo zonke izimo zezulu
  Izinhlelo zokushisa ezithuthukisiwe ziqinisekisa ukuthi ukushaja okusheshayo kuhlala kuphephile futhi kusebenza kahle emakhazeni noma ekushiseni okukhulu.

Isiphetho

I-voltage ingaphezu kakhulu kwepharamitha yobuchwepheshe ebandayo. Ixhumanisa ukusebenza kahle kokushaja, ukuhambisana kweshaja, ukuphepha kwesistimu, kanye nempilo yebhethri.
Kubanikazi bezimoto ze-EV, ukuqonda i-voltage yokushaja ephezulu yemoto yakho kukusiza ukuthi uhlele uhambo olude futhi ukhethe amashaja avula ukusebenza kwayo okugcwele.
Embonini, ukuvela kwamandla kagesi kumelela umjaho ophelele wesayensi yezinto zokwakha, ubunjiniyela kagesi, kanye nokulawula okuhlakaniphile.

Njengoba ubuchwepheshe bokushaja buthuthuka, amashaja ngokwawo kumele asekele ububanzi bamandla kagesi, ukuminyana kwamandla okuphezulu, kanye nama-algorithms okulawula ahlakaniphile.
Yilokhu kanye Amandla Amasha e-Injetiyakha—amashaja abonisa umyalezo owodwa olula:
Kungakhathaliseki ukuthi ubuchwepheshe be-EV buthuthuka kanjani, sinikeza amandla asheshayo, aphephile, futhi athembekile kuzo zonke izimoto.