Inkqubo yoLawulo lwebhetri (BMS)idlala indima ebalulekileyo ekuqinisekiseni ukusebenza okukhuselekileyo nokusebenzayo kweebhetri ze-lithium-ion, kuquka i-LFP kunye ne-ternary lithium iibhetri (NCM / NCA). Injongo yayo ephambili kukubeka iliso kunye nokulawula iiparitha ezahlukeneyo zebhetri, ezifana ne-voltage, ubushushu, kunye nekhoyo ngoku, ukuqinisekisa ukuba ibhetri isebenza ngaphakathi kwemida ekhuselekileyo. I-BMS ikwakhusela ibhetri ekutshajweni, ekukhutshweni kakhulu, okanye ekusebenzeni ngaphandle kweqondo lobushushu elilelona liphezulu. Kwiipakethe zebhetri ezinochungechunge oluninzi lweeseli (iintambo zebhetri), i-BMS ilawula ukulinganisa kweeseli zomntu ngamnye. Xa i-BMS ingaphumeleli, ibhetri ishiywe isengozini, kwaye imiphumo ingaba nzima.
1. Ukutshaja kakhulu okanye ukukhupha ngokugqithisileyo
Omnye weyona misebenzi ibalulekileyo ye-BMSis ukuthintela ibhetri ekubeni itshajwe ngokugqithisileyo okanye ekukhutshweni kakhulu. Ukutshaja kakhulu kuyingozi kakhulu kwiibhetri ezinoxinano lwamandla aphezulu njenge-ternary lithium (NCM/NCA) ngenxa yokuba buthathaka kwazo kwi-thermal runaway. Oku kwenzeka xa amandla ombane ebhetri engaphaya kwemida ekhuselekileyo, evelisa ubushushu obugqithisileyo, obunokukhokelela kugqabhuko-dubulo okanye umlilo. Ukukhupha ngaphezulu, kwelinye icala, kunokubangela umonakalo osisigxina kwiiseli, ngakumbi kwiiibhetri LFP, enokulahlekelwa ngumthamo kwaye ibonise ukusebenza kakubi emva kokukhutshwa okunzulu. Kuzo zombini iindidi, ukusilela kwe-BMS ukulawula amandla ombane ngexesha lokutshaja nokukhupha kunokubangela umonakalo ongenakulungiseka kwipakethi yebhetri.
2. Ubushushu obugqithisileyo kunye ne-Thermal Runaway
Iibhetri ze-Ternary lithium (NCM/NCA) zinovelwano ngakumbi kumaqondo obushushu aphezulu, ngakumbi kuneebhetri zeLFP, ezaziwa ngokuzinza okungcono kwe-thermal. Nangona kunjalo, zombini iintlobo zifuna ukulawulwa ngononophelo lobushushu. I-BMS esebenzayo ijonga ubushushu bebhetri, iqinisekisa ukuba ihlala kwindawo ekhuselekileyo. Ukuba i-BMS iyasilela, ubushushu obugqithisileyo bunokwenzeka, nto leyo ebangela ukusabela kwekhonkco eliyingozi elibizwa ngokuba yi-thermal runaway. Kwipakethi yebhetri eyenziwe ngothotho lweeseli (iintambo zebhetri), ukubaleka kwe-thermal kunokusasaza ngokukhawuleza ukusuka kwesinye iseli ukuya kwesinye, okukhokelela kukusilela okuyintlekele. Ukusetyenziswa kwamandla ombane aphezulu njengezithuthi zombane, lo mngcipheko uyandiswa ngenxa yokuba ubuninzi bamandla kunye nokubalwa kweeseli kuphezulu kakhulu, kwandisa amathuba okuba neziphumo ezibi.
3. Ukungalingani phakathi kweeseli zebhetri
Kwiipakethe zeebhetri zeeseli ezininzi, ngakumbi ezo zinolungelelwaniso lwamandla ombane aphezulu njengezithuthi zombane, ukulinganisa amandla ombane phakathi kweeseli kubalulekile. I-BMS inoxanduva lokuqinisekisa ukuba zonke iiseli ezikwipakethi zilungelelene. Ukuba i-BMS ayiphumelelanga, ezinye iiseli zinokutsalwa kakhulu ngelixa ezinye zihlala zingahlawuliswanga. Kwiinkqubo ezineentambo ezininzi zebhetri, oku kungalingani akunciphisi nje ukusebenza ngokupheleleyo kodwa kubangela ingozi yokhuseleko. Iiseli ezihlawuliswa ngokugqithisileyo ngakumbi zisemngciphekweni wokushisa ngokugqithiseleyo, nto leyo enokubangela ukuba zisilele ngokuyintlekele.
4. Ukungaphumeleli kwamandla okanye ukuNcitshiswa kokuSebenza
I-BMS engaphumeleliyo inokukhokelela ekucuthekeni kokusebenza kakuhle okanye ukusilela kwamandla ngokupheleleyo. Ngaphandle kokulawulwa ngokufanelekileyo kwamandla ombane, ubushushu, kunye nokulinganisa iiseli, inkqubo inokuvalwa ukunqanda umonakalo ongakumbi. Kwizicelo apho iintambo zebhetri eziphezulu zibandakanyekayo, njengezithuthi zombane okanye ukugcinwa kwamandla kwimizi-mveliso, oku kunokukhokelela ekulahlekelweni kwamandla ngokukhawuleza, okubangela ingozi enkulu yokhuseleko. Umzekelo, i-ternary lithium battery pack inokuvalwa ngokungalindelekanga ngelixa isithuthi sombane sihamba, kudala iimeko zokuqhuba eziyingozi.
Ixesha lokuposa: Sep-23-2024
