Iindlela Zokubala ze-SOC

Yintoni i-SOC?

Imeko yokuTshaja yebhetri (i-SOC) ngumlinganiselo wetshaja yangoku ekhoyo kumthamo wetshaja iyonke, odla ngokubonakaliswa njengepesenti. Ukubala ngokuchanekileyo i-SOC kubalulekile kwiInkqubo yoLawulo lweeBhetri (i-BMS)njengoko kunceda ekumiseleni amandla aseleyo, ukulawula ukusetyenziswa kwebhetri, kunyelawula iinkqubo zokutshaja nokukhupha itshaja, ngaloo ndlela yandisa ubomi bebhetri.

Iindlela ezimbini eziphambili ezisetyenziswayo ukubala i-SOC yindlela yokudibanisa yangoku kunye nendlela ye-voltage ye-open-circuit. Zombini zineengenelo kunye neengxaki zazo, kwaye nganye ifaka iimpazamo ezithile. Ke ngoko, kwizicelo ezisebenzayo, ezi ndlela zihlala zidityanisiwe ukuphucula ukuchaneka.

 

1. Indlela yangoku yokudibanisa

Indlela yokudibanisa yangoku ibala i-SOC ngokudibanisa itshaja kunye nemisinga yokukhupha. Inzuzo yayo ikwindlela elula, ayifuni ukulinganiswa. Amanyathelo ngala alandelayo:

1. Rekhoda i-SOC ekuqaleni kokutshaja okanye ukukhupha itshaja.
2. Linganisa umsinga ngexesha lokutshaja nokukhupha itshaja.
3. Hlanganisa umsinga ukuze ufumane utshintsho olukhoyo.
4. Bala i-SOC yangoku usebenzisa i-SOC yokuqala kunye notshintsho lwetshaja.

Ifomula yile:

I-SOC=i-SOC yokuqala+uQ∫(I⋅dt)​

aphoU-I ngumbane, u-Q ngumthamo webhetri, kwaye u-dt lixesha eliphakathi.

Kubalulekile ukuqaphela ukuba ngenxa yokumelana kwangaphakathi kunye nezinye izinto, indlela yokudibanisa yangoku ineempazamo ezithile. Ngaphezu koko, ifuna ixesha elide lokutshaja nokukhupha ukuze kufumaneke iziphumo ezichanekileyo.

 

2. Indlela yeVolthi eVulekileyo

Indlela ye-open-circuit voltage (OCV) ibala i-SOC ngokulinganisa i-voltage yebhetri xa kungekho mthwalo. Ukulula kwayo yeyona nzuzo yayo iphambili kuba ayifuni ukulinganiswa kwamandla. Amanyathelo ngala:

1. Misela ubudlelwane phakathi kwe-SOC kunye ne-OCV ngokusekelwe kwimodeli yebhetri kunye nedatha yomenzi.
2. Linganisa i-OCV yebhetri.
3. Bala i-SOC usebenzisa ulwalamano lwe-SOC-OCV.

Qaphela ukuba ijika le-SOC-OCV liyatshintsha ngokusetyenziswa kwebhetri kunye nobomi bayo, nto leyo efuna ukulinganiswa rhoqo ukuze kugcinwe ukuchaneka. Ukumelana kwangaphakathi nako kuyayichaphazela le ndlela, kwaye iimpazamo zibaluleke ngakumbi kwiimeko zokukhupha eziphezulu.

 

3. Ukudibanisa iindlela zokudibanisa zangoku kunye neendlela ze-OCV

Ukuphucula ukuchaneka, iindlela zokudibanisa zangoku kunye neendlela ze-OCV zihlala zidityaniswa. Amanyathelo ale ndlela ngala:

1. Sebenzisa indlela yokudibanisa yangoku ukulandelela ukutshaja nokukhupha itshaja, ufumane i-SOC1.
2. Linganisa i-OCV kwaye usebenzise ubudlelwane be-SOC-OCV ukubala i-SOC2.
3. Dibanisa i-SOC1 kunye ne-SOC2 ukuze ufumane i-SOC yokugqibela.

Ifomula yile:

I-SOC=k1⋅SOC1+k2⋅SOC2

aphoI-k1 kunye ne-k2 zii-coefficients zobunzima ezifikelela kwi-1. Ukukhethwa kwee-coefficients kuxhomekeke ekusetyenzisweni kwebhetri, ixesha lokuvavanya, kunye nokuchaneka. Ngokwesiqhelo, i-k1 inkulu kwiimvavanyo zokutshaja/zokukhupha i-charge ezinde, kwaye i-k2 inkulu kwiimvavanyo ze-OCV ezichanekileyo.

Ukulinganisa nokulungisa kuyafuneka ukuqinisekisa ukuchaneka xa kuhlanganiswa iindlela, njengoko ukumelana kwangaphakathi kunye nobushushu nazo zichaphazela iziphumo.

 

Isiphelo

Indlela yangoku yokudibanisa kunye nendlela ye-OCV zezona ndlela ziphambili zokubala i-SOC, nganye ineengenelo kunye neengxaki zayo. Ukudibanisa zombini ezi ndlela kunokuphucula ukuchaneka kunye nokuthembeka. Nangona kunjalo, ukulinganisa kunye nokulungisa kubalulekile ekumiselweni ngokuchanekileyo kwe-SOC.