Hanyoyin Lissafi na SOC

Menene SOC?

Yanayin Cajin baturi (SOC) shine rabon cajin na yanzu da ake samu zuwa jimillar ƙarfin caji, yawanci ana bayyana shi azaman kashi. Ƙididdigar SOC daidai yana da mahimmanci a cikin waniTsarin Gudanar da Baturi (BMS)kamar yadda yake taimakawa wajen tantance ragowar makamashi, sarrafa amfani da baturi, dasarrafa caji da tafiyar matakai, don haka ƙara tsawon rayuwar baturi.

Hanyoyi biyu masu mahimmanci da ake amfani da su don ƙididdige SOC sune hanyar haɗin kai na yanzu da kuma hanyar buɗe wutar lantarki. Dukansu suna da fa'ida da rashin amfaninsu, kuma kowanne yana gabatar da wasu kurakurai. Sabili da haka, a aikace-aikace masu amfani, waɗannan hanyoyin galibi ana haɗa su don inganta daidaito.

 

1. Hanyar Haɗewa ta Yanzu

Hanyar haɗin kai na yanzu tana ƙididdige SOC ta hanyar haɗa cajin da fitar da igiyoyi. Amfaninsa ya ta'allaka ne a cikin sauƙi, ba buƙatar daidaitawa ba. Matakan sune kamar haka:

1. Yi rikodin SOC a farkon caji ko fitarwa.
2. Auna halin yanzu yayin caji da fitarwa.
3. Haɗa na yanzu don nemo canjin cajin.
4. Yi lissafin SOC na yanzu ta amfani da SOC na farko da canjin caji.

Tsarin tsari shine:

SOC=farko SOC+Q∫(I⋅dt)

inaNi ne halin yanzu, Q shine ƙarfin baturi, kuma dt shine tazarar lokaci.

Yana da mahimmanci a lura cewa saboda juriya na ciki da sauran dalilai, hanyar haɗin kai na yanzu yana da matakin kuskure. Bugu da ƙari, yana buƙatar tsawon lokaci na caji da fitarwa don samun ingantaccen sakamako.

 

2. Hanyar Buɗe-Circuit Voltage

Hanyar buɗaɗɗen wutar lantarki (OCV) tana ƙididdige SOC ta hanyar auna ƙarfin baturin lokacin da babu kaya. Sauƙin sa shine babban fa'idarsa tunda baya buƙatar aunawa na yanzu. Matakan sune:

1. Ƙaddamar da dangantaka tsakanin SOC da OCV bisa tsarin baturi da bayanan masana'anta.
2. Auna OCV na baturi.
3. Yi lissafin SOC ta amfani da dangantakar SOC-OCV.

Lura cewa madaidaicin SOC-OCV yana canzawa tare da amfani da baturi da tsawon rayuwarsa, yana buƙatar daidaitawa lokaci-lokaci don kiyaye daidaito. Juriya na ciki kuma yana shafar wannan hanyar, kuma kurakurai sun fi girma a manyan jihohin da aka fitar.

 

3. Haɗa Haɗin kai na Yanzu da Hanyoyin OCV

Don inganta daidaito, haɗin kai na yanzu da hanyoyin OCV galibi ana haɗa su. Matakan wannan hanyar sune:

1. Yi amfani da hanyar haɗin kai na yanzu don waƙa da caji da fitarwa, samun SOC1.
2. Auna OCV kuma yi amfani da dangantakar SOC-OCV don ƙididdige SOC2.
3. Haɗa SOC1 da SOC2 don samun SOC na ƙarshe.

Tsarin tsari shine:

SOC=k1⋅SOC1+k2⋅SOC2

inak1 da k2 sune ma'aunin ƙididdiga masu nauyi tara zuwa 1. Zaɓin ƙididdiga ya dogara da amfani da baturi, lokacin gwaji, da daidaito. Yawanci, k1 ya fi girma don gwaje-gwajen caji / fitarwa mai tsayi, kuma k2 ya fi girma don ƙarin ma'aunin OCV daidai.

Ana buƙatar daidaitawa da gyara don tabbatar da daidaito yayin haɗa hanyoyin, kamar yadda juriya na ciki da zafin jiki kuma suna tasiri sakamakon.

 

Kammalawa

Hanyar haɗin kai na yanzu da kuma hanyar OCV sune dabarun farko don lissafin SOC, kowanne yana da nasa ribobi da fursunoni. Haɗa hanyoyin biyu na iya haɓaka daidaito da aminci. Koyaya, daidaitawa da gyara suna da mahimmanci don takamaiman ƙaddarar SOC.