Nzira dzekuverenga dzeSOC

Chii chinonzi SOC?

Bhatiri's State of Charge (SOC) ireshiyo yechaji iripo kuhuwandu hwekuchaja huwandu, kazhinji hunoratidzwa sechikamu. Kunyatso kuverenga iyo SOC kwakakosha mune aBattery Management System (BMS)sezvo zvichibatsira kuona simba rasara, gadzirisa kushandiswa kwebhatiri, uyekudzora kuchaja uye kuburitsa maitiro, nokudaro tichiwedzera hupenyu hwebhatiri.

Nzira mbiri huru dzinoshandiswa kuverengera SOC ndiyo yazvino nzira yekubatanidza uye yakavhurika-yedunhu voltage nzira. Zvose zvine zvazvakanakira nezvazvakaipira, uye chimwe nechimwe chinosuma zvimwe zvikanganiso. Nokudaro, mukushandiswa kunoshanda, nzira idzi dzinowanzobatanidzwa kuvandudza kururama.

 

1. Ikozvino Kubatanidza Method

Iyo yazvino nzira yekubatanidza inoverengera iyo SOC nekubatanidza iyo yekuchaja uye yekuburitsa mafungu. Kubatsira kwayo kuri mukupfava kwayo, kusingade kuenzanisa. Matanho acho ndeaya:

1. Rekodha iyo SOC pakutanga kwekuchaja kana kuburitsa.
2. Pima ikozvino panguva yekuchaja uye kuburitsa.
3. Batanidza ikozvino kuti uwane shanduko mukuchaja.
4. Verenga iyo yazvino SOC uchishandisa yekutanga SOC uye cheji shanduko.

Formula ndeiyi:

SOC=yekutanga SOC+Q∫(I⋅dt)

kupiNdini iyezvino, Q ndiko kugona kwebhatiri, uye dt ndiyo nguva yenguva.

Zvakakosha kuziva kuti nekuda kwekupikisa kwemukati uye zvimwe zvinhu, ikozvino nzira yekubatanidza ine chiyero chekukanganisa. Uyezve, zvinoda nguva yakareba yekuchaja uye kuburitsa kuti uwane mibairo chaiyo.

 

2. Open-Circuit Voltage Method

Iyo open-circuit voltage (OCV) nzira inoverengera iyo SOC nekuyera voltage yebhatiri kana pasina mutoro. Kureruka kwayo ndiko kunobatsira kwayo sezvo isingade kuyerwa kwazvino. Matanho ndeaya:

1. Gadzira hukama pakati peSOC neOCV zvichienderana nemhando yebhatiri uye data yemugadziri.
2. Edza OCV yebhatiri.
3. Verenga iyo SOC uchishandisa iyo SOC-OCV hukama.

Ziva kuti iyo SOC-OCV curve inoshanduka nekushandiswa kwebhatiri uye hupenyu hurefu, zvinoda kugadzikiswa nguva nenguva kuti ichengetedze chokwadi. Kupikisa kwemukati kunokanganisawo nzira iyi, uye zvikanganiso zvinonyanya kukosha pamatunhu ekubuda.

 

3. Kubatanidza Ikozvino Kubatanidzwa uye OCV Nzira

Kuti uvandudze huchokwadi, iko zvino kusanganisa uye nzira dzeOCV dzinowanzo kusanganiswa. Matanho eiyi nzira ndeaya:

1. Shandisa yazvino nzira yekubatanidza kuteedzera kuchaja uye kuburitsa, kuwana SOC1.
2. Mera iyo OCV uye shandisa iyo SOC-OCV hukama kuverenga SOC2.
3. Sanganisa SOC1 uye SOC2 kuti uwane yekupedzisira SOC.

Formula ndeiyi:

SOC=k1⋅SOC1+k2⋅SOC2

kupik1 uye k2 uremu coefficients suming kusvika 1. Sarudzo yecoefficients inoenderana nekushandiswa kwebhatiri, nguva yekuyedza, uye nemazvo. Kazhinji, k1 yakakura kune refu yekuchaja / yekuburitsa bvunzo, uye k2 yakakura kune yakanyatsojeka OCV zviyero.

Calibration uye kururamisa kunodiwa kuve nechokwadi chechokwadi kana uchibatanidza nzira, sezvo yemukati kuramba uye tembiricha zvinokanganisa mhedzisiro.

 

Mhedziso

Iyo yazvino nzira yekubatanidza uye nzira yeOCV ndiyo yekutanga matekiniki ekuverenga kweSOC, imwe neimwe iine zvayakanakira nezvayakaipira. Kubatanidza nzira mbiri idzi kunogona kuwedzera kurongeka uye kuvimbika. Nekudaro, calibration uye kururamisa kwakakosha kune chaiyo SOC kutsunga.