Njira Zowerengera za SOC

Kodi SOC ndi chiyani?

Battery's State of Charge (SOC) ndi chiyerekezo cha mtengo womwe ulipo pakalipano ndi kuchuluka kwa mphamvu zonse, zomwe nthawi zambiri zimawonetsedwa ngati peresenti. Kuwerengera molondola SOC ndikofunikira mu aBattery Management System (BMS)monga zimathandiza kudziwa mphamvu yotsala, kusamalira kugwiritsa ntchito batri, ndikuwongolera njira zolipirira ndi kutulutsa, motero kukulitsa moyo wa batri.

Njira ziwiri zazikulu zomwe zimagwiritsidwa ntchito powerengera SOC ndi njira yophatikizira yomwe ilipo komanso njira yamagetsi yotseguka. Onse ali ndi ubwino ndi kuipa kwawo, ndipo iliyonse imayambitsa zolakwika zina. Choncho, muzogwiritsira ntchito, njirazi nthawi zambiri zimaphatikizidwa kuti zikhale zolondola.

 

1. Njira Yophatikizira Panopa

Njira yophatikizira yapano imawerengera SOC pophatikiza zolipiritsa ndi kutulutsa mafunde. Ubwino wake wagona pa kuphweka kwake, osafuna kuwongolera. Njira zake ndi izi:

1. Lembani SOC kumayambiriro kwa kulipiritsa kapena kutulutsa.
2. Yezerani mphamvu yapano pakuyitanitsa ndi kutulutsa.
3. Phatikizani zomwe zilipo kuti mupeze kusintha komwe kulipo.
4. Werengetsani SOC yapano pogwiritsa ntchito SOC yoyambira ndikusintha kwa mtengo.

Fomula ndi:

SOC=yoyamba SOC+Q∫(I⋅dt).

kuIne ndi panopa, Q ndi mphamvu ya batri, ndipo dt ndi nthawi.

Ndikofunika kuzindikira kuti chifukwa cha kukana kwamkati ndi zinthu zina, njira yophatikizira yamakono ili ndi vuto linalake. Kuphatikiza apo, pamafunika nthawi yayitali yolipiritsa ndikutulutsa kuti mukwaniritse zolondola kwambiri.

 

2. Open-Circuit Voltage Njira

Njira yamagetsi otseguka (OCV) imawerengera SOC poyesa mphamvu ya batri pomwe palibe katundu. Kuphweka kwake ndi mwayi wake waukulu chifukwa sikutanthauza kuyeza panopa. Masitepe ndi:

1. Khazikitsani ubale pakati pa SOC ndi OCV kutengera mtundu wa batri ndi data ya opanga.
2. Yezerani OCV ya batri.
3. Kuwerengera SOC pogwiritsa ntchito ubale wa SOC-OCV.

Dziwani kuti curve ya SOC-OCV imasintha ndi kagwiritsidwe ntchito ka batri ndi moyo wake, zomwe zimafunika kusinthidwa pafupipafupi kuti ikhale yolondola. Kukaniza kwamkati kumakhudzanso njirayi, ndipo zolakwika zimakhala zofunikira kwambiri pazigawo zotuluka kwambiri.

 

3. Kuphatikiza Njira Zamakono Zogwirizanitsa ndi OCV

Kuwongolera zolondola, kuphatikiza komweku ndi njira za OCV nthawi zambiri zimaphatikizidwa. Njira zochitira izi ndi:

1. Gwiritsani ntchito njira yophatikizira yomwe ilipo kutsata kuyitanitsa ndi kutulutsa, kupeza SOC1.
2. Yezerani OCV ndikugwiritsa ntchito ubale wa SOC-OCV kuwerengera SOC2.
3. Phatikizani SOC1 ndi SOC2 kuti mupeze SOC yomaliza.

Fomula ndi:

SOC=k1⋅SOC1+k2⋅SOC2

kuk1 ndi k2 ndi ma coefficients a kulemera kwa 1. Kusankha ma coefficients kumadalira kagwiritsidwe ntchito ka batri, nthawi yoyesera, ndi kulondola. Nthawi zambiri, k1 imakhala yokulirapo pakuyesa kwanthawi yayitali / kutulutsa, ndipo k2 ndi yayikulu pakuyezera bwino kwa OCV.

Kuwongolera ndi kukonza ndikofunikira kuti zitsimikizire kulondola pophatikiza njira, chifukwa kukana kwamkati ndi kutentha kumakhudzanso zotsatira.

 

Mapeto

Njira yamakono yophatikizira ndi njira ya OCV ndiyo njira zoyambira zowerengera za SOC, iliyonse ili ndi zabwino ndi zoyipa zake. Kuphatikiza njira zonsezi kungapangitse kulondola komanso kudalirika. Komabe, kuwongolera ndi kuwongolera ndikofunikira pakutsimikiza kolondola kwa SOC.