Ibhokisi ye-Intelligent junction ene-voltage kunye nongqamaniso lwangoku kwii-EVs

Ibhokisi ye-Intelligent junction ene-voltage kunye nongqamaniso lwangoku kwii-EVs

Njengoko iimoto zombane (EVs) zisiya zithandwa, umceli mngeni kubenzi beemoto kukususa “ixhala loluhlu” lwabaqhubi ngelixa besenza imoto ifikeleleke ngakumbi.Oku kuguqulela ekubeni kwenziwe iipakethi zebhetri zibe nexabiso eliphantsi kunye nokuxinana kwamandla aphezulu.Iyure nganye ye-watt egcinwe kwaye ifunyenwe kwiiseli ibalulekile ukwandisa uluhlu lokuqhuba.

Ukuba nemilinganiselo echanekileyo yombane, iqondo lobushushu kunye nekhoyo ngoku kubaluleke kakhulu ekufezekiseni uqikelelo oluphezulu lwemeko yentlawulo okanye imeko yempilo yeseli nganye ekwinkqubo.

Owona msebenzi uphambili wenkqubo yolawulo lwebhetri (BMS) kukubeka iliso kumandla ombane weeseli, ukupakisha umbane kunye nokupakisha okwangoku.Umzobo 1a ubonisa ipakethe yebhetri kwibhokisi eluhlaza kunye neeseli ezininzi ezifakwe.Iyunithi yomphathi weseli iquka iimonitha zeseli ezijonga umbane kunye nobushushu beeseli.
Izinto eziluncedo kwi-BJB ekrelekrele:

Ukuphelisa iingcingo kunye neentambo zokubopha iintambo.
Ukuphucula imilinganiselo yombane kunye nemilinganiselo yangoku kunye nengxolo ephantsi.
Yenza lula ihardware kunye nophuhliso lwesoftware.Ngenxa yokuba i-Texas Instruments (TI) yokubeka iliso kwipakethi kunye nabahloli beeseli zivela kusapho olufanayo lwezixhobo, ulwakhiwo lwabo kunye neemephu zerejista ziyafana kakhulu.
Yenza ukuba abavelisi benkqubo bangqamanise umbane wokupakisha kunye nemilinganiselo yangoku.Ulibaziseko oluncinane longqamaniso lomeleza uqikelelo lwentlawulo.
I-voltage, ubushushu kunye nomlinganiselo wangoku
Amandla ombane: Umbane ulinganiswa kusetyenziswa imitya eyohluliweyo echasayo.Le milinganiselo ijonga ukuba izitshixo zombane zivuliwe okanye zivaliwe.
Ubushushu: Imilinganiselo yobushushu ibeka iliso kwiqondo lobushushu le-shunt resistor ukuze i-MCU ifake isicelo sembuyekezo, kunye nobushushu babanxibelelanisi ukuqinisekisa ukuba abagxininisi.
Okwangoku: Imilinganiselo yangoku isekwe kwi:
I-shunt resistor.Kuba imisinga kwi-EV inokunyuka iye kumawaka e-ampere, ezi zixhasi ze-shunt zincinci kakhulu - kuluhlu lwama-25 µOhms ukuya kuma-50 µOhms.
Inzwa yeholo.Uluhlu lwayo oluguquguqukayo luqhelekile, ke, ngamanye amaxesha kukho abenzi boluvo abaninzi kwinkqubo yokulinganisa lonke uluhlu.Izinzwa zempembelelo yeholo ngokwendalo zisesichengeni sokuphazamiseka kombane.Ungazibeka ezi luvo naphi na kwinkqubo, nangona kunjalo, kwaye ngokwendalo zibonelela ngomlinganiselo ozimeleyo.
I-Voltage kunye nongqamaniso lwangoku

I-Voltage kunye nongqamaniso lwangoku lixesha lokulibaziseka okukhoyo kwisampulu yombane kunye neyangoku phakathi kwepakethe esweni kunye nemonitha yeseli.Le milinganiselo isetyenziswa ikakhulu ekubaleni imeko yentlawulo kunye nemeko yempilo nge-electro-impedance spectroscopy.Ukubala i-impedance yeseli ngokulinganisa i-voltage, yangoku kunye namandla kwiseli yonke yenza ukuba i-BMS ibeke iliso kumandla emoto kwangoko.

Umbane weseli, i-voltage yokupakisha kunye nepakethe yangoku kufuneka idityaniswe lixesha ukuze inike awona mandla achanekileyo kunye noqikelelo lwe-impedance.Ukuthatha iisampulu phakathi kwexesha elithile libizwa ngokuba lithuba longqamaniso.Okukhona lincinci ixesha longqamaniso, kokukhona ichaneka ngakumbi uqikelelo lwamandla okanye uqikelelo lweimpedance.Impazamo yedatha engangqinelaniyo ilungelelaniswe.Okukhona ichaneka ngakumbi imeko yoqikelelo lwentlawulo, kokukhona befumana abaqhubi beemayile ezininzi.

Iimfuno zongqamaniso

Ii-BMS zesizukulwana esilandelayo ziya kufuna amandla ombane adityanisiweyo kunye nemilinganiselo yangoku ngaphantsi kwe-1 ms, kodwa kukho imingeni ekuhlangabezaneni nale mfuneko:

Zonke iimonitha zeeseli kunye nabahloli bepakethe banemithombo eyahlukeneyo yewotshi;ke ngoko, iisampulu ezifunyenweyo azihambelani ngokwendalo.
I-monitor yeseli nganye inokulinganisa ukusuka kwiiseli ezintandathu ukuya kwi-18;idatha yeseli nganye inamasuntswana ali-16 ubude.Kukho idatha eninzi efuna ukuhanjiswa ngaphezulu kwe-daisy-chain interface, enokusebenzisa uhlahlo lwabiwo-mali lwexesha oluvunyelweyo kumbane kunye nongqamaniso lwangoku.
Nasiphi na isihluzi esinjengesihluzo sombane okanye isihluzo sangoku siphembelela indlela yomqondiso, inegalelo kumbane kunye nokulibaziseka kongqamaniso lwangoku.
I-TI's BQ79616-Q1, BQ79614-Q1 kunye ne-BQ79612-Q1 iimonitha zebhetri zinokugcina ubudlelwane bexesha ngokukhupha umyalelo wokuqala we-ADC kwi-monitor yeseli kunye ne-pack monitor.Ezi monitor ibhetri TI kwakhona ukuxhasa ukulibaziseka ADC iisampulu ukubuyisela ukulibaziseka ekusasazweni xa uhambisa ADC isiqalo umyalelo phantsi ujongano daisy-chain.

Ukuqukumbela

Iinzame ezinkulu zokufakelwa kombane ezenzekayo kwishishini leemoto ziqhuba isidingo sokunciphisa ubunzima be-BMSs ngokongeza i-electronics kwibhokisi ye-junction, ngelixa uphucula ukhuseleko lwenkqubo.Ipakethi yokubeka iliso inokulinganisa ngokwendawo ii-voltages ngaphambi nangemva kweereyilayi, yangoku ngepakethi yebhetri.Ukuphuculwa kokuchaneka kwamandla ombane kunye nemilinganiselo yangoku kuya kukhokelela ngokuthe ngqo ekusetyenzisweni kakuhle kwebhetri.

I-voltage esebenzayo kunye nongqamaniso lwangoku lwenza ukuba imeko yezempilo echanekileyo, i-state-of-charge kunye nezibalo ze-spectroscopy ze-impedance zombane eziya kukhokelela ekusebenziseni ngokufanelekileyo ibhetri ukwandisa ubomi bayo, kunye nokunyusa amanqanaba okuqhuba.