Izindlela Zokubala ze-SOC

Kuyini i-SOC?

Isimo Sokushaja sebhethri (i-SOC) yisilinganiso seshaja yamanje etholakala kumthamo wokushaja ophelele, ngokuvamile ovezwa njengephesenti. Ukubala i-SOC ngokunembile kubalulekile ku-Uhlelo Lokuphathwa Kwebhethri (i-BMS)njengoba kusiza ukunquma amandla asele, ukuphatha ukusetshenziswa kwebhethri, kanyelawula izinqubo zokushaja nokukhipha ishaja, ngaleyo ndlela kwandise isikhathi sokuphila kwebhethri.

Izindlela ezimbili eziyinhloko ezisetshenziswa ukubala i-SOC yindlela yokuhlanganisa yamanje kanye nendlela ye-voltage ye-open-circuit. Zombili zinezinzuzo kanye nokungalungi kwazo, futhi ngayinye iletha amaphutha athile. Ngakho-ke, ekusetshenzisweni okungokoqobo, lezi zindlela zivame ukuhlanganiswa ukuze kuthuthukiswe ukunemba.

 

1. Indlela Yokuhlanganisa Yamanje

Indlela yokuhlanganisa yamanje ibala i-SOC ngokuhlanganisa ukushaja kanye nemisinga yokukhipha. Inzuzo yayo itholakala ekulula kwayo, ayidingi ukulinganiswa. Izinyathelo yilezi ezilandelayo:

1. Qopha i-SOC ekuqaleni kokushaja noma ukukhipha ishaja.
2. Kala ugesi ngesikhathi sokushaja nokukhipha igesi.
3. Hlanganisa ugesi ukuze uthole ushintsho olusebenzayo.
4. Bala i-SOC yamanje usebenzisa i-SOC yokuqala kanye noshintsho lweshaja.

Ifomula ithi:

I-SOC=i-SOC yokuqala+Q∫(I⋅dt)​

kuphiU-I ungugesi, u-Q ungumthamo webhethri, kanti u-dt uyisikhathi esiphakathi.

Kubalulekile ukuqaphela ukuthi ngenxa yokumelana kwangaphakathi nezinye izici, indlela yokuhlanganisa yamanje inephutha elithile. Ngaphezu kwalokho, idinga isikhathi eside sokushaja nokukhipha ukuze kutholakale imiphumela enembe kakhudlwana.

 

2. Indlela yeVolthiji Evulekile

Indlela ye-voltage ye-open-circuit (OCV) ibala i-SOC ngokulinganisa i-voltage yebhethri uma kungekho mthwalo. Ubulula bayo buyinzuzo yayo eyinhloko njengoba ingadingi ukulinganiswa kwamanje. Izinyathelo yilezi:

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

Qaphela ukuthi ijika le-SOC-OCV liyashintsha ngokusetshenziswa kwebhethri kanye nesikhathi sokuphila kwalo, okudinga ukulinganiswa ngezikhathi ezithile ukuze kulondolozwe ukunemba. Ukumelana kwangaphakathi nakho kuthinta le ndlela, futhi amaphutha abaluleke kakhulu ezimweni zokukhishwa okuphezulu.

 

3. Ukuhlanganisa Izindlela Zokuhlanganisa Zamanje kanye Nezindlela Zokusebenza Kwe-OCV

Ukuze kuthuthukiswe ukunemba, izindlela zokuhlanganisa zamanje kanye nezindlela ze-OCV zivame ukuhlanganiswa. Izinyathelo zale ndlela yilezi:

1. Sebenzisa indlela yokuhlanganisa yamanje ukulandelela ukushaja nokukhipha ishaja, uthole i-SOC1.
2. Linganisa i-OCV bese usebenzisa 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

kuphiI-k1 kanye ne-k2 ziyizilinganiso zesisindo ezifinyelelwa ku-1. Ukukhethwa kwama-coefficient kuncike ekusetshenzisweni kwebhethri, isikhathi sokuhlola, kanye nokunemba. Ngokuvamile, i-k1 inkulu ekuhlolweni kokushaja/ukukhipha i-charge okude, kanti i-k2 inkulu ekulinganisweni kwe-OCV okunembe kakhudlwana.

Ukulinganisa nokulungisa kuyadingeka ukuqinisekisa ukunemba lapho kuhlanganiswa izindlela, njengoba ukumelana kwangaphakathi kanye nokushisa nakho kuthinta imiphumela.

 

Isiphetho

Indlela yokuhlanganisa yamanje kanye nendlela ye-OCV yizona zindlela eziyinhloko zokubala i-SOC, ngayinye inezinzuzo kanye nokungalungi kwayo. Ukuhlanganisa zombili izindlela kungathuthukisa ukunemba kanye nokuthembeka. Kodwa-ke, ukulinganisa kanye nokulungisa kubalulekile ekunqumeni i-SOC enembile.