Umngeni wenkqubo ye-800V: Imfumba yokutshaja yenkqubo yokutshaja

I-800V yokutshaja "Izinto ezisisiseko zokutshaja"

Eli nqaku lithetha ikakhulu malunga neemfuno zokuqala ze-800V yemfumba yokutshaja, jonga kuqala kumgaqo wokutshaja: xa intloko yompu etshajayo iqhagamshelwe kwisiphelo sesithuthi, imfumba yokutshaja iya kubonelela ① umbane oncedisayo we-DC osezantsi kwisithuthi. Ukuphela, ukwenza i-BMS eyakhelwe-ngaphakathi (iNkqubo yoLawulo lweBattery) yesithuthi sombane, emva kokuba isebenze, ② isiphelo sesithuthi siya kudityaniswa nesiphelo semfumba ukutshintshiselana ngeeparitha zokutshaja ezisisiseko, njengamandla emfuno yokutshaja ephezulu yesithuthi. isiphelo kunye namandla aphezulu emveliso yesiphelo semfumba, kwaye amacala amabini aya kuhambelana ngokuchanekileyo.

Emva kokudibanisa ngokuchanekileyo, i-BMS (iNkqubo yoLawulo lweBattery) ekupheleni kwesithuthi iya kuthumela ulwazi lwemfuno yamandla kwimfumba yokutshaja, kwaye inqwaba yokutshaja iya kulungelelanisa i-voltage yayo ephumayo kunye neyangoku ngokwale ngcaciso, kwaye iqalise ngokusemthethweni ukutshaja isithuthi, esi. umgaqo osisiseko woqhagamshelo lokutshaja, kwaye kuyimfuneko kuthi ukuba siziqhelanise nawo kuqala.

Ukutshaja kwe800V: "Boost voltage okanye okwangoku"

Ngokwethiyori, sifuna ukunika amandla okutshaja ukucutha ixesha lokutshaja,kukho iindlela ezi-2: mhlawumbi wongeza ibhetri okanye unyuse amandla ombane; ngokwe-W=Pt, ukuba amandla okutshaja aphindwe kabini, ngoko ixesha lokutshaja liya kuba lisiqingatha; ngokuhambelana ne-P = UI, ukuba i-voltage okanye i-current iphindwe kabini, amandla okutshaja anokuphinda aphindwe kabini, kwaye oku kuye kwakhankanywa ngokuphindaphindiweyo, okukwabhekwa njengengqiqo.

Ukuba i-current iphezulu, kuya kubakho iingxaki ezi-2, ukuphakama kwangoku, inkulu kunye ne-bulkier intambo ephethe ngoku iyafuneka, eya kwandisa ububanzi kunye nobunzima bocingo, okuya kwandisa iindleko, kwaye kwangelo xesha, akukho lula ukuba abasebenzi basebenze; Ukongeza, ngokutsho kwe-Q=I²Rt, ukuba i-current iphezulu, kokukhona ilahleko yamandla inkulu, kwaye ilahleko ibonakala ngendlela yobushushu, eyongeza uxinzelelo kulawulo lwe-thermal, ngoko ke akukho mathandabuzo ukuba ukwanda amandla okutshaja ayinqweneleki ukuqonda ukonyuka kwamandla okutshaja ngokunyusa langoku ngokuqhubekayo.ukonyuka kwamandla okutshaja akunqweneleki, ingekuko ukutshaja okanye kwiinkqubo zokuqhuba kwimoto.

Xa kuthelekiswa nokutshaja okukhawulezayo kwangoku, ukutshaja okukhawulezayo kwevoltage kuvelisa ubushushu obuncinci kunye nelahleko ephantsi, okwangoku, phantse onke amashishini eemoto eziqhelekileyo amkele indlela yokunyusa amandla ombane, kwimeko yokutshaja okukhawulezayo kwevoltage, ngokwethiyori, ixesha lokutshaja. inokucuthwa nge-50%, kwaye ukuphuculwa kwamandla ombane kunokutsalwa ngokulula kumandla okutshaja ukusuka kwi-120KW ukuya kuma-480KW.

Ukutshaja kwe-800V: "I-Voltage kunye ne-current ihambelana nefuthe le-thermal".

Kodwa nokuba uphakamisa i-voltage okanye yangoku, okokuqala, njengoko amandla akho okutshaja esanda, ubushushu bakho buya kuvela, kodwa ukunyusa i-voltage kunye nokubonakaliswa kobushushu akufani, ukukhawuleza okunye kwempembelelo kwibhetri. kananjalo kancinane ngakumbi, ubushushu obucothayo kodwa obufihliweyo obucacileyo obuphezulu bukwacaca ngakumbi. Kodwa eyokuqala ibhetele xa kuthelekiswa. 

Njengoko ikhoyo kwi-conductor ngokuchasana okuphantsi, yonyusa indlela yombane inciphisa ubungakanani bentambo efunekayo, ikhuphe ubushushu obuncinci, kwaye iphucule yangoku kwangaxeshanye, indawo ephetheyo yangoku yecandelo lokunyuka ikhokelela kwindawo enkulu yangaphandle. ubukhulu bentambo yobunzima, ngelixa ixesha lokutshaja lobushushu obude liya kuphucula ngokucothayo, ukufihlakala ngakumbi, le ndlela yebhetri iyingozi enkulu.

Ukutshaja kwe-800V: "Ukutshaja fumba imingeni ethe ngqo"

I-800V yokutshaja ngokukhawuleza ineemfuno ezahlukeneyo ekupheleni kwemfumba:

Ukuba ujonga kwinqanaba lomzimba, njengoko amandla ombane esanda, uyilo lobungakanani besixhobo esifanelekileyo luya kukhula, olufana ne-IEC60664 inqanaba longcoliseko 2 iqela lezinto zokufakelwa kwesixhobo 1 umgama ophakamileyo wesixhobo sombane uyafuneka ukusuka kwi-2mm ukuya kwi-4mm, ukugquma okufanayo. Iimfuno zokuxhathisa ziya kwanda, umgama ophantse ube yi-creepage kunye neemfuno zokugquma ziyafuneka ukuba zinyuke nge-factor of two, ezifuna amandla ombane aphezulu kuyilo lwangaphambili.

Oku kufuna uyilo lwenkqubo yamandla ombane yangaphambili ukuyila kwakhona ubungakanani bezixhobo ezifanelekileyo, kubandakanywa iziqhagamshelo, imiqolo yobhedu, imidibaniso, njl.njl., Ukongeza kokunyuka kwamandla ombane kuya kukhokelela kwiimfuno eziphezulu zokucima i-arc, imfuno yezixhobo ezithile. ezifana ne-fuses, iibhokisi zokutshintsha, izihlanganisi, njl., ukuphucula iimfuno, ezi mfuno zikwasebenza kuyilo lwemoto.

I-high-voltage 800V yokutshaja inkqubo, njengoko kukhankanyiwe ngasentla, idinga ukunyusa inkqubo yokupholisa ulwelo olusebenzayo lwangaphandle, umoya wemveli opholileyo womibini osebenzayo kunye nokupholisa okwenziwayo akakwazi ukuhlangabezana neemfuno zombhobho wokutshaja umgca ukuya ekupheleni kwemoto. ulawulo nalo lufuna kakhulu kunanini na ngaphambili, kwaye le nxalenye yobushushu benkqubo indlela yokunciphisa nokulawula ukusuka kwinqanaba lesixhobo kunye nenqanaba lenkqubo lixesha elilandelayo lokuphucula nokusombulula ingxaki yembono;

ukongeza, le nxalenye yobushushu ayisiyiyo kuphela ubushushu obuvela kwi-overcharging, kodwa kunye nobushushu obuvela kwi-overcharging, engeyona kuphela inxalenye yenkqubo, kodwa kunye nobushushu obuvela kwi-overcharging. Ayibobushushu kuphela obuziswe kukutshaja, kodwa nobushushu obuziswe zizixhobo zamandla ezixhaphakileyo, ngoko ke ukwenza njani iliso lexesha lokwenyani kwaye uzinzile, uyasebenza, kwaye ukhuselekile ukukhupha ubushushu kubaluleke kakhulu, nto leyo engakhange ibe nayo kuphela. ukuphumelela kwezinto kodwa kunye nokufunyanwa kwenkqubo, njengokutshaja ubushushu bexesha lokwenyani kunye nokubeka iliso okusebenzayo.

Okwangoku kwimarike i-DC yokutshaja i-voltage ephumayo yemfumba yi-400V, kwaye ayikwazi ngokuthe ngqo kwi-800V yokutshaja ibhetri yamandla, ngoko idinga ukongezwa okongeziweyo kweemveliso ze-DCDC ziya ku-400V ombane ukuya kwi-800V, kwaye emva koko ihlawule ibhetri, efuna amandla aphezulu ukuguqulwa kwamandla aphezulu, ukusetyenziswa kwesilicon carbide endaweni yemodyuli yemveli IGBT lolona khetho luqhelekileyo lwendlela, nangona imodyuli ye-silicon carbide inokunyusa amandla emveliso yemfumba yokutshaja, kodwa nokunyusa amandla emveliso yemfumba yokutshaja. Nangona iimodyuli ze-silicon carbide zinokunyusa amandla okuphuma kwemfumba yokutshaja kunye nokunciphisa ilahleko, iindleko nazo zinyuka kakhulu, kwaye iimfuno ze-EMC ziphezulu.

Shwankathela. Ukonyuka kwamandla ombane kuya kuba kumgangatho wenkqubo kwaye inqanaba lesixhobo kufuneka liphuculwe, inqanaba lenkqubo libandakanya inkqubo yolawulo lobushushu, inkqubo yokhuseleko lokutshaja, njl.