Ibhetri yenye yezona ndawo zibaluleke kakhulu kwiinkqubo zokugcina amandla e-electrochemical. Ngokuncitshiswa kweendleko zebhetri ye-lithium kunye nokuphuculwa koxinano lwamandla ebhetri ye-lithium, ukhuseleko kunye nexesha lokuphila, ukugcinwa kwamandla kuye kwangenisa izicelo ezinkulu. Eli nqaku liza kukunceda uqonde ugcino lwamandla Uninzi lweeparamitha ezibalulekileyo zeibhetri ye-lithium.
01
umthamo webhetri ye-lithium
ibhetri ye-lithiumumthamo sesinye sezalathisi ezibalulekileyo zokusebenza zokulinganisa ukusebenza kwebhetri ye-lithium. Umthamo webhetri ye-lithium yahlulwe ibe ngumthamo olinganisiweyo kunye nomthamo wangempela. Ngaphantsi kweemeko ezithile (izinga lokukhutshwa, ubushushu, i-voltage yokuphelisa, njl.), Isixa sombane esikhutshwe yibhetri ye-lithium sibizwa ngokuba yi-rated capacity (okanye umthamo weNominal). Iiyunithi eziqhelekileyo zomthamo yi-mAh kunye ne-Ah=1000mAh. Ukuthatha i-48V, i-50Ah ibhetri ye-lithium njengomzekelo, umthamo webhetri ye-lithium yi-48V × 50Ah = 2400Wh, eyi-2.4 kilowatt iiyure.
02
ukukhutshwa kwebhetri ye-lithium C izinga
I-C isetyenziselwa ukubonisa intlawulo yebhetri ye-lithium kunye nesantya sokukhupha umthamo. Intlawulo kunye nesantya sokukhupha = intlawulo kunye nokukhupha umthamo wangoku / ukulinganisa. Umzekelo: xa ibhetri ye-lithium enexabiso elilinganisiweyo le-100Ah ikhutshwe kwi-50A, izinga layo lokukhutshwa ngu-0.5C. I-1C, i-2C, kunye ne-0.5C yimilinganiselo yokukhupha ibhetri ye-lithium, engumlinganiselo wesantya sokukhupha. Ukuba umthamo osetyenzisiweyo ukhutshwa kwiyure ye-1, kuthiwa yi-1C ukukhutshwa; ukuba ikhutshwe kwiiyure ezi-2, ibizwa ngokuba yi-1/2 = 0.5C yokukhupha. Ngokuqhelekileyo, umthamo webhetri ye-lithium unokubonwa ngeendlela ezahlukeneyo zokukhupha. Kwibhetri ye-lithium ye-24Ah, i-1C yokukhupha okwangoku yi-24A kunye ne-0.5C yokukhutshwa ngoku yi-12A. Inkulu ikhoyo ngoku yokukhupha. Ixesha lokukhupha nalo lifutshane. Ngokuqhelekileyo xa uthetha ngomlinganiselo wenkqubo yokugcina amandla, ibonakaliswa ngamandla amakhulu enkqubo / umthamo wenkqubo (KW / KWh). Umzekelo, isikali sesikhululo samandla sogcino lwamandla ngama-500KW/1MWh. Apha i-500KW ibhekisela kwintlawulo ephezulu kunye nokukhutshwa kwenkqubo yokugcina amandla. Amandla, i-1MWh ibhekisa kumthamo wenkqubo yesikhululo samandla. Ukuba umbane ukhutshwe ngamandla alinganisiweyo we-500KW, umthamo wesikhululo samandla ukhutshwa kwiiyure ze-2, kwaye izinga lokukhutshwa ngu-0.5C.
03
SOC (State of charge) imeko yentlawulo
Imeko yentlawulo yebhetri ye-lithium ngesiNgesi yiState of Charge, okanye i-SOC ngokufutshane. Ibhekisela kumlinganiselo womthamo oseleyo webhetri ye-lithium emva kokuba isetyenziswe ixesha elithile okanye ishiywe ingasetyenziswanga ixesha elide kunye nomthamo wayo kwimeko ehlawulwe ngokupheleleyo. Ngokuqhelekileyo ibonakaliswa njengepesenti. Ukubeka nje, ngumthamo oseleyo webhetri ye-lithium. amandla.
04
I-DOD (Ubunzulu bokukhutshwa) ubunzulu bokukhutshwa
Ubunzulu bokukhutshwa (i-DOD) isetyenziselwa ukulinganisa ipesenti phakathi kokukhutshwa kwebhetri ye-lithium kunye nomthamo webhetri ye-lithium. Kwibhetri ye-lithium efanayo, ubunzulu obuseti be-DOD buhambelana ngokungafaniyo nobomi bomjikelezo webhetri ye-lithium. Ubunzulu bokukhupha ubunzulu, bufutshane ubomi bomjikelezo webhetri ye-lithium. Ngoko ke, kubalulekile ukulinganisela ixesha elifunekayo lebhetri ye-lithium kunye nesidingo sokwandisa ubomi bomjikelezo webhetri ye-lithium.
Ukuba utshintsho kwi-SOC ukusuka engenanto ngokupheleleyo ukuya kuhlawuliswa ngokupheleleyo irekhodwe njenge-0 ~ 100%, ngoko kwizicelo eziphathekayo, kungcono ukwenza ibhetri ye-lithium nganye isebenze kuluhlu lwe-10% ~ 90%, kwaye kunokwenzeka ukuba usebenze ngezantsi. 10%. Kuya kukhutshwa ngokugqithisileyo kwaye ezinye iikhemikhali ezingenakuguqulwa ziya kwenzeka, eziya kuchaphazela ubomi bebhetri ye-lithium.
05
I-SOH (iState of Health) imeko yempilo yebhetri ye-lithium
I-SOH (iState of Health) ibonisa ibhetri ye-lithium yangoku yokugcina amandla ombane ngokubhekiselele kwibhetri entsha ye-lithium. Ibhekisa kumlinganiselo webhetri yelithium yangoku yebhetri egcweleyo kumandla ebhetri entsha ye-lithium. Inkcazo yangoku ye-SOH ibonakala ngokukodwa kwiinkalo ezininzi ezifana nomthamo, umbane, ukuchasana kwangaphakathi, amaxesha okujikeleza kunye namandla aphezulu. Amandla kunye nomthamo zezona zisetyenziswa kakhulu.
Ngokuqhelekileyo, xa umthamo webhetri ye-lithium (SOH) yehla malunga ne-70% ukuya kwi-80%, inokuqwalaselwa ukuba ifikelele kwi-EOL (isiphelo sobomi bebhetri ye-lithium). I-SOH isalathiso esichaza imeko yempilo yangoku yebhetri ye-lithium, ngelixa i-EOL ibonisa ukuba ibhetri ye-lithium ifikelele ekupheleni kobomi. Ifuna ukutshintshwa. Ngokubeka iliso kwixabiso le-SOH, ixesha lokuba ibhetri ye-lithium ifikelele kwi-EOL inokuqikelelwa kwaye ukugcinwa okuhambelanayo kunye nokulawulwa kunokwenziwa.
Ixesha lokuposa: May-08-2024
