Xa kuyilwa okanye kusandiswa iinkqubo ezisebenza ngebhetri, umbuzo oqhelekileyo uvela: Ngaba iipakethi ezimbini zebhetri ezinombane ofanayo zinokudityaniswa kuthotho? Impendulo emfutshane ithiEwe, kodwa ngemfuneko ebalulekileyo:i-voltage ukumelana nesakhono sesekethe yokukhuselakufuneka ziphononongwe ngononophelo. Ngezantsi, sichaza iinkcukacha zobugcisa kunye nezilumkiso zokuqinisekisa ukusebenza okukhuselekileyo nokuthembekileyo.
Ukuqonda iMida: uKhuseleko lweSekethe yokuNyamezelwa koMbane
Iipakethi zebhetri yeLithium zidla ngokuxhotyiswa ngeBhodi yeSekethe yokuKhusela (PCB) ukuthintela ukutshaja, ukukhupha kakhulu, kunye neesekethe ezimfutshane. Iparameter engundoqo yale PCB yiamandla ombane okumelana nomgangatho weMOSFETs zawo(izitshixo zombane ezilawula ukuhamba kwangoku).
Umzekelo wemeko:
Thatha iipakethi ezimbini zebhetri ze-4-cell LiFePO4 njengomzekelo. Iipakethi nganye ine-voltage yentlawulo epheleleyo ye-14.6V (3.65V ngeseli nganye). Ukuba idityaniswe kuthotho, i-voltage yabo edibeneyo iba29.2V. I-PCB esemgangathweni yokhuseleko lwebhetri eyi-12V idla ngokuyilwa neeMOSFET ezithelekelwe35–40V. Kule meko, i-voltage iyonke (i-29.2V) iwela ngaphakathi kwendawo ekhuselekileyo, evumela ukuba iibhetri zisebenze ngokufanelekileyo kuthotho.
Umngcipheko Wokugqitha kwiMida:
Nangona kunjalo, ukuba udibanisa iipakethi ezine ezinjalo kuchungechunge, i-voltage iyonke iya kudlula i-58.4V-kude ngaphaya kwe-35-40V yokunyamezela kwee-PCB eziqhelekileyo. Oku kudala ingozi efihliweyo:
Inzululwazi Esemva Komngcipheko
Xa iibhetri zixhunyiwe kwichungechunge, i-voltages yazo yongeza, kodwa iisekethe zokukhusela zisebenza ngokuzimeleyo. Phantsi kweemeko eziqhelekileyo, amandla ombane adityanisiweyo anika amandla umthwalo (umzekelo, isixhobo se-48V) ngaphandle kwemiba. Nangona kunjalo, ukubaibhetri enye ipakethe ibangela ukhuseleko(umz., ngenxa yokukhutshwa ngokugqithisileyo okanye i-overcurrent), ii-MOSFETs zayo ziya kuyikhupha loo pakhi kwisekethe.
Kweli nqanaba, i-voltage epheleleyo yeebhetri eziseleyo kuthotho isetyenziswa kuzo zonke ii-MOSFETs eziqhawukileyo. Umzekelo, kulungiselelo lweepakethi ezine, iPCB eqhawukileyo ingajongana nayo phantse58.4V-udlula umlinganiselo wayo we-35-40V. Ii-MOSFETs zinokuthi emva koko zisilele ngenxa yokuukuqhawuka kombane, ukukhubaza ngokusisigxina isiphaluka sokukhusela kunye nokushiya ibhetri isengozini kwiingozi ezizayo.
Izisombululo zoQhagamshelwano oluKhuselekileyo lweCandelo
Ukunqanda le mingcipheko, landela ezi zikhokelo:
1.Jonga iiNgcaciso zoMvelisi:
Soloko uqinisekisa ukuba iPCB yokhuseleko lwebhetri yakho ithelekelwe uthotho lweenkqubo. Ezinye ii-PCB ziyilelwe ngokucacileyo ukuba zilawule amandla ombane aphezulu kuqwalaselo lweepakethi ezininzi.
2.IiPCB zeSiko zoMbane oPhezulu:
Kwiiprojekthi ezifuna iibhetri ezininzi kuthotho (umzekelo, ugcino lwelanga okanye iinkqubo ze-EV), khetha iisekethe zokhuseleko ezinee-MOSFETs ezilungiselelweyo. Ezi zinokulungelelaniswa ukumelana nombane opheleleyo wokuseta uthotho lwakho.
3.Uyilo olulungelelanisiweyo:
Qinisekisa ukuba zonke iipakethi zebhetri kuluhlu zihambelana nomthamo, ubudala, kunye nempilo ukunciphisa umngcipheko wokubangela ukungalingani kweendlela zokukhusela.
Iingcamango Zokugqibela
Ngelixa ukudibanisa iibhetri ezine-voltage efanayo kuthotho kunokwenzeka ngokobuchule, umngeni wokwenyani usekuqinisekiseni ukubaukhuseleko lwesekethe lunokusingatha uxinzelelo lombane olongezelekayo. Ngokubeka phambili ukucaciswa kwecandelo kunye noyilo olusebenzayo, unokukala ngokukhuselekileyo iisistim zebhetri yakho kusetyenziso lwe-voltage ephezulu.
E-DALY, sinikezelaIzisombululo zePCB ezinokwenziwa ngokwezifisoezine-voltage eziphezulu ze-MOSFETs ukuhlangabezana neemfuno eziphambili zoqhagamshelwano. Qhagamshelana neqela lethu ukuyila inkqubo yamandla ekhuselekileyo, ethembekileyo yeeprojekthi zakho!
Ixesha lokuposa: May-22-2025
