Inqwaba yokushaja engu-800V “Izisekelo Zokushaja”
Lesi sihloko sikhuluma kakhulu ngezinye izidingo zokuqala ze-800Vukushaja izinqwaba, okokuqala ake sibheke isimiso sokushaja: Lapho ithiphu yokushaja ixhunywe ekugcineni kwemoto, inqwaba yokushaja izohlinzeka (1) amandla ayisisizi e-DC aphansi-voltage esiphethweni semoto ukuze kusebenze i-BMS eyakhelwe ngaphakathi (uhlelo lokuphatha ibhethri) yemoto kagesi Ngemva kokwenza kusebenze, (2) xhuma isiphetho semoto endaweni yokushaja eyisisekelo njengenqwaba yamandla okushaja. ukuphela kwemoto namandla amakhulu okukhipha inqwaba yokuphela, ngemuva kokuthi izinhlangothi zombili zifaniswe kahle, i-BMS (uhlelo lokuphatha ibhethri) yokuphela kwemoto izothumela imininingwane yesidingo samandlaisiteshi sokushaja se-ev, kanyeinqwaba yokushaja imoto kagesiizolungisa eyayo i-voltage ephumayo kanye neyamanje ngokwalolu lwazi, futhi iqale ngokusemthethweni ukushaja imoto, okuwumgomo oyisisekeloukushaja uxhumano, futhi kudingeka sijwayelane nayo kuqala.
Ukushaja okungu-800V: “i-boost voltage noma yamanje”
Ngokwethiyori, uma sifuna ukunikeza amandla okushaja ukuze sifinyeze isikhathi sokushaja, ngokuvamile kunezindlela ezimbili: noma ukwandisa ibhethri noma ukwandisa i-voltage; Ngokusho kwe-W=Pt, uma amandla okushaja ephindwe kabili, isikhathi sokushaja ngokwemvelo sizoncipha; Ngokusho kwe-P=UI, uma i-voltage noma i-current iphindwe kabili, amandla okushaja angaphindeka kabili, okuye kwashiwo ngokuphindaphindiwe futhi kubhekwa njengomqondo ovamile.
Uma i-current ikhudlwana, kuzoba nezinkinga ezimbili, ezinkulu zamanje, ikhebula elikhulu futhi eliningi elidinga okwamanje, elizokwandisa ububanzi bezintambo nesisindo, ukwandisa izindleko, futhi akulula ukuthi abasebenzi basebenze; Ngokwengeziwe, ngokuya nge-Q=I²Rt, uma i-current ingaphezulu, ukulahlekelwa kwamandla kukhulu, futhi ukulahlekelwa kubonakala ngendlela yokushisa, okuphinda kunyuse ingcindezi yokuphathwa kwe-thermal, ngakho-ke akungabazeki ukuthi akufanelekile ukukhuphula amandla wokushaja ngokuqhubekayo wamanje, noma ngabe iyashaja noma isistimu yokushayela emotweni.
Uma kuqhathaniswa nokushaja okusheshayo kwamanje,ukushaja okusheshayo kwe-high-voltageikhiqiza ukushisa okuncane nokulahlekelwa okuphansi, futhi cishe izinkampani zezimoto ezijwayelekile zisebenzisa umzila wokukhuphuka kwamandla kagesi, esimweni sokushaja okusheshayo kwe-voltage, kucatshangwa ukuthi isikhathi sokushaja singafinyezwa ngo-50%, futhi ukwanda kwamandla kagesi nakho kungakhuphula kalula amandla okushaja ukusuka ku-120KW kuya ku-480KW.
Ukushaja okungu-800V: “Imiphumela eshisayo ehambisana ne-voltage kanye neyamanje”
Kodwa kungakhathaliseki ukuthi ukwandisa i-voltage noma ukwandisa okwamanje, okokuqala, ngokunyuka kwamandla akho okushaja, ukushisa kwakho kuzovela, kodwa ukubonakaliswa okushisayo kokwandisa i-voltage nokwandisa okwamanje kuhlukile. Nokho, okokuqala kungcono uma kuqhathaniswa.
Ngenxa yokumelana okuphansi okuhlangatshezwana nayo amandla wamanje lapho udlula ku-conductor, indlela yokwenyusa i-voltage inciphisa usayizi wekhebula odingekayo, futhi ukushisa okufanele kuhlakazwe kuncane, futhi ngenkathi i-curse inyuswa, ukwanda kwendawo ephethe i-curry cross-sectional kuholela kububanzi obukhudlwana bangaphandle nesisindo sekhebula esikhudlwana, futhi ukushisa kuzokhula kancane kancane ngokunwetshwa kwesikhathi sokushaja, okuwubungozi obukhulu bebhethri.
Ukushaja okungu-800V: “Ezinye izinselelo ezikhona ngokushesha nezinqwaba zokushaja”
Ukushaja okusheshayo kwe-800V nakho kunezidingo ezihlukile ekugcineni kwenqwaba:
Uma ngokubuka ngokomzimba, ngokukhuphuka kwamandla kagesi, usayizi womklamo wemishini ehlobene uzokhula, ngokwesibonelo, ngokwezinga lokungcola kwe-IEC60664 ingu-2 kanye nebanga leqembu le-insulation liyi-1, ibanga ledivayisi ene-high-voltage lidinga ukusuka ku-2mm liye ku-4mm, futhi izidingo ezifanayo zokumelana nokufakwa zizokhuphuka futhi zidinga ukuphinda ziphindwe kabili, okudinga ukwakhiwa kabusha kwe-cree. umklamo uma uqhathaniswa nomklamo wangaphambilini wesistimu kagesi, okuhlanganisa izixhumi, imigoqo yethusi, izixhumi, njll. Ngaphezu kwalokho, ukwanda kwamandla kagesi kuzoholela ezidingweni eziphakeme zokucisha i-arc, futhi kuyadingeka ukwandisa izidingo zamanye amadivaysi anjengama-fuse, amabhokisi okushintshanisa, izixhumi, njll., nawo asebenza ekwakhiweni kwemoto, okuzoshiwo kuyona ezihlokweni ezilandelayo.
Isistimu yokushaja ene-voltage ephezulu engu-800V idinga ukwengeza isistimu yokupholisa uketshezi esebenzayo yangaphandle njengoba kushiwo ngenhla, futhi ukupholisa komoya okujwayelekile akukwazi ukuhlangabezana nezidingo noma ngabe kuyapholisa okusebenzayo noma okungenzi lutho, kanye nokuphathwa okushisayoisiteshi sokushaja imoto kagesiulayini wesibhamu kuya ekugcineni kwemoto nawo uphakeme kunangaphambili, futhi indlela yokunciphisa nokulawula izinga lokushisa lale ngxenye yesistimu kusukela ezingeni ledivayisi kanye nezinga lesistimu iphuzu okufanele lithuthukiswe futhi lixazululwe yinkampani ngayinye esikhathini esizayo; Ngaphezu kwalokho, le ngxenye yokushisa akukhona nje ukushisa okulethwa ukushajwa ngokweqile, kodwa futhi ukushisa okulethwa amadivaysi amandla emvamisa ephezulu, ngakho-ke indlela yokwenza ukuqapha kwesikhathi sangempela nokuzinza, okusebenzayo nokuphephile ukususa ukushisa kubaluleke kakhulu, okungekona nje ukuphumelela ezintweni ezisetshenziswayo, kodwa futhi nokutholwa okuhlelekile, okufana nesikhathi sangempela nokuqapha okusebenzayo kwezinga lokushisa lokushaja.
Njengamanje, i-voltage ephumayo yeDC ukushaja izinqwabaemakethe ngokuyisisekelo i-400V, engakwazi ukushaja ngokuqondile ibhethri lamandla angu-800V, ngakho-ke i-boost eyengeziwe yomkhiqizo we-DCDC iyadingeka ukuphakamisa i-voltage ye-400V ku-800V, bese ishaja ibhethri, okudinga amandla aphezulu kanye nokushintshwa kwe-high-frequency, kanye nemodyuli esebenzisa i-silicon carbide ukuze ithathe indawo ye-IGBT yendabuko yiyona ndlela yamanje yokukhetha i-carconbide yokukhishwa kwamandla, ukunciphisa ukulahlekelwa, kodwa izindleko nazo ziphezulu kakhulu, futhi izidingo ze-EMC nazo ziphezulu.
Ukukufingqa. Ngokuyisisekelo, ukukhuphuka kwamandla kagesi kuzodinga ukukhushulwa kuleveli yesistimu kanye neleveli yedivayisi, okuhlanganisa isistimu yokuphatha okushisayo, isistimu yokuvikela ukushaja, njll., futhi ileveli yedivayisi ihlanganisa ukuthuthukiswa kwamanye amadivayisi kazibuthe namadivayisi kagesi.
Isikhathi sokuthumela: Jul-30-2025
