Izindlela zokubala ze-SOC

Yini i-SOC?

Isimo Sokushaja Sebhethri (i-SOC) isilinganiso sokushajwa kwamanje esitholakala kumthamo wesamba sokushaja, ngokuvamile esivezwa njengephesenti. Ukubala ngokunembile i-SOC kubalulekile ku-aUhlelo Lokuphatha Ibhethri (BMS)njengoba kusiza ukunquma amandla asele, ukuphatha ukusetshenziswa kwebhethri, kanyelawula ukushaja nokukhipha izinqubo, ngaleyo ndlela kunweba ubude bempilo yebhethri.

Izindlela ezimbili eziyinhloko ezisetshenziselwa ukubala i-SOC indlela yamanje yokuhlanganisa kanye nendlela yamandla kagesi evulekile. Kokubili kunezinzuzo kanye nokubi, futhi ngayinye yethula amaphutha athile. Ngakho-ke, ekusetshenzisweni okusebenzayo, lezi zindlela zivame ukuhlanganiswa ukuze kuthuthukiswe ukunemba.

 

1. Indlela Yamanje Yokuhlanganisa

Indlela yamanje yokuhlanganisa ibala i-SOC ngokuhlanganisa ukushaja nokukhipha imisinga. Inzuzo yayo ilele ekululameni kwayo, okungadingi ukulinganisa. Izinyathelo zimi kanje:

1. Rekhoda i-SOC ekuqaleni kokushaja noma ukukhulula.
2. Linganisa umsinga ngesikhathi sokushaja nokukhipha.
3. Hlanganisa okwamanje ukuze uthole ushintsho oluphethe.
4. Bala i-SOC yamanje usebenzisa i-SOC yokuqala kanye noshintsho lwenkokhiso.

Ifomula ithi:

I-SOC=i-SOC+Q∫(I⋅dt) yokuqala

laphoMina ngingowamanje, u-Q umthamo webhethri, futhi i-dt isikhawu sesikhathi.

Kubalulekile ukuqaphela ukuthi ngenxa yokumelana kwangaphakathi nezinye izici, indlela yamanje yokuhlanganisa inezinga elithile lephutha. Ngaphezu kwalokho, kudinga izikhathi ezinde zokushaja nokukhipha ukuze kuzuzwe imiphumela enembe kakhudlwana.

 

2. Indlela ye-Open-Crcuit Voltage

Indlela ye-open-circuit voltage (OCV) ibala i-SOC ngokulinganisa i-voltage yebhethri uma kungekho mthwalo. Ukuba lula kwayo kuyinzuzo yayo eyinhloko njengoba ingadingi ukulinganisa kwamanje. Izinyathelo yilezi:

1. Sungula ubudlelwano phakathi kwe-SOC ne-OCV ngokusekelwe kumodeli yebhethri nedatha yomkhiqizi.
2. Linganisa i-OCV yebhethri.
3. Bala i-SOC usebenzisa ubudlelwano be-SOC-OCV.

Qaphela ukuthi ijika le-SOC-OCV liyashintsha ngokusetshenziswa kwebhethri nempilo yokuphila, edinga ukulinganiswa kwezikhathi ezithile ukuze kugcinwe ukunemba. Ukumelana kwangaphakathi nakho kuthinta le ndlela, futhi amaphutha abaluleke kakhulu ezimweni zokukhishwa okuphezulu.

 

3. Ukuhlanganisa Izindlela Zamanje Zokuhlanganiswa kanye ne-OCV

Ukuthuthukisa ukunemba, ukuhlanganiswa kwamanje nezindlela ze-OCV zivame ukuhlanganiswa. Izinyathelo zale ndlela yilezi:

1. Sebenzisa indlela yamanje yokuhlanganisa ukuze ulandelele ukushaja nokukhipha, uthole i-SOC1.
2. Linganisa i-OCV futhi usebenzise ubudlelwano be-SOC-OCV ukuze ubale i-SOC2.
3. Hlanganisa i-SOC1 ne-SOC2 ukuze uthole i-SOC yokugcina.

Ifomula ithi:

I-SOC=k1⋅SOC1+k2⋅SOC2

laphoI-k1 ne-k2 ama-coefficient esisindo afinyezwa ku-1. Ukukhethwa kwama-coefficient kuncike ekusetshenzisweni kwebhethri, isikhathi sokuhlola, kanye nokunemba. Ngokuvamile, i-k1 inkulu ekuhloleni ukushaja/kokukhipha isikhathi eside, futhi i-k2 inkulu ezilinganisweni ezinembile ze-OCV.

Ukulinganisa nokulungiswa kuyadingeka ukuze kuqinisekiswe ukunemba lapho kuhlanganiswa izindlela, njengoba ukumelana kwangaphakathi nezinga lokushisa nakho kunomthelela emiphumeleni.

 

Isiphetho

Indlela yamanje yokuhlanganisa kanye nendlela ye-OCV izindlela eziyinhloko zokubala ze-SOC, ngayinye inobuhle nobubi bayo. Ukuhlanganisa zombili izindlela kungathuthukisa ukunemba nokuthembeka. Kodwa-ke, ukulinganisa nokulungiswa kubalulekile ekunqumeni okunembayo kwe-SOC.