Ithiyori yeLithium intlawulo kunye nokukhutshwa kunye noyilo lwendlela yokubala umbane
2. Intshayelelo kwimitha yebhetri
2.1 Umsebenzi wokuqaliswa kwemitha yombane
Ulawulo lwebhetri lunokuthathwa njengenxalenye yolawulo lwamandla.Kulawulo lwebhetri, imitha yombane inoxanduva lokuqikelela umthamo webhetri.Umsebenzi wayo osisiseko kukubeka iliso kwi-voltage, ukuhlawula / ukukhutshwa kwangoku kunye nokushisa kwebhetri, kwaye uqikelele imeko yentlawulo (SOC) kunye nomthamo ogcweleyo (FCC) webhetri.Kukho iindlela ezimbini eziqhelekileyo zokuqikelela imeko yentlawulo yebhetri: indlela yombane ovulekileyo wesiphaluka (OCV) kunye nendlela ye-coulometric.Enye indlela yi-algorithm yombane oguquguqukayo owenziwe yi-RICHTEK.
2.2 Vula indlela yamandla ombane wesekethe
Kulula ukuqaphela imitha yombane usebenzisa indlela yombane ovulekileyo, enokufumaneka ngokujonga imeko ehambelanayo yentlawulo yombane ovulekileyo.I-voltage yesiphaluka evulekileyo ithathwa njenge-voltage ye-terminal yebhetri xa ibhetri iphumla ngaphezu kwemizuzu engama-30.
Ijika lombane webhetri liya kwahluka ngomthwalo owahlukileyo, ubushushu kunye nokuguga kwebhetri.Ngoko ke, i-voltmeter evulekileyo evulekileyo yesiphaluka ayikwazi ukumela ngokupheleleyo imeko yentlawulo;Imeko yentlawulo ayinakuqikelelwa ngokujonga itafile yodwa.Ngamanye amazwi, ukuba imeko yentlawulo iqikelelwa kuphela ngokujonga phezulu kwetafile, impazamo iya kuba nkulu.
Umzobo ongezantsi ubonisa ukuba imeko yentlawulo (i-SOC) yombane webhetri efanayo yahluke kakhulu kwindlela yombane ovulekileyo wesiphaluka phantsi kokutshaja kunye nokukhupha.
Umzobo 5. I-voltage yebhetri phantsi kweemeko zokutshaja kunye nokukhupha
Ingabonwa kumfanekiso ongezantsi ukuba imeko yentlawulo iyahluka kakhulu phantsi kwemithwalo eyahlukeneyo ngexesha lokukhutshwa.Ke ngokusisiseko, indlela yombane ovulekileyo wesekethe ilungele kuphela iinkqubo ezifuna ukuchaneka okuphantsi kobume bentlawulo, njengeemoto ezisebenzisa iibhetri ze-lead-acid okanye umbane ongenakuphazamiseka.
Umzobo 6. Ibhetri yebhetri phantsi kwemithwalo eyahlukeneyo ngexesha lokukhutshwa
2.3 Indlela ye-Coulometric
Umgaqo wokusebenza we-coulometry kukudibanisa i-resistor yokufumanisa kwindlela yokutshaja / yokukhupha ibhetri.I-ADC ilinganisa i-voltage kwi-reception resistance kwaye iyiguqulela kwixabiso langoku lebhetri ehlawuliswayo okanye ekhutshweyo.I-counter-time counter (RTC) inokudibanisa ixabiso langoku kunye nexesha ukwazi ukuba zingaphi ii-coulombs ezihambayo.
Umzobo 7. Indlela esisiseko yokusebenza yendlela yokulinganisa i-coulomb
Indlela ye-Coulometric ingabala ngokuchanekileyo imeko yexesha langempela lokuhlawula ngexesha lokutshaja okanye ukukhupha.Nge-counter counter coulomb kunye ne-discharge coulomb counter, ingabala amandla ombane aseleyo (RM) kunye nomthamo ogcweleyo wentlawulo (FCC).Ngexesha elifanayo, umthamo oseleyo wentlawulo (RM) kunye nomthamo opheleleyo wentlawulo (FCC) unokusetyenziselwa ukubala imeko yentlawulo (SOC = RM / FCC).Ukongeza, inokuphinda iqikelele ixesha eliseleyo, elifana nokuphela kwamandla (TTE) kunye nokugcwala kwamandla (TTF).
Umzobo 8. Ifomula yokubala yendlela ye-coulomb
Kukho izinto ezimbini eziphambili ezibangela ukutenxa kokuchaneka kwe-coulomb metrology.Eyokuqala kukuqokelelwa kwempazamo ye-offset kwimvakalelo yangoku kunye nomlinganiselo we-ADC.Nangona impazamo yokulinganisa incinci ngetekhnoloji yangoku, ukuba akukho ndlela ilungileyo yokuyiphelisa, impazamo iya kwanda ngokuhamba kwexesha.Umzobo ongezantsi ubonisa ukuba kwisicelo esisebenzayo, ukuba akukho kulungiswa ngexesha lexesha, impazamo eqokelelweyo ayinamda.
Umzobo 9. Impazamo eyongezelekayo yendlela ye-coulomb
Ukuze kupheliswe iphutha eliqokelelweyo, kukho amaxesha amathathu anokwenzeka kwixesha eliqhelekileyo lokusebenza kwebhetri: ukuphela kwentlawulo (EOC), ukuphela kokukhutshwa (EOD) kunye nokuphumla (Relax).Ibhetri igcwaliswe ngokupheleleyo kwaye imeko yentlawulo (SOC) kufuneka ibe yi-100% xa imeko yokuphela kokutshaja ifikelelwe.Umqathango wokuphela kokukhutshwa kuthetha ukuba ibhetri ikhutshwe ngokupheleleyo kwaye imeko yentlawulo (SOC) kufuneka ibe yi-0%;Inokuba lixabiso elipheleleyo lombane okanye utshintsho kunye nomthwalo.Xa ufikelela kwindawo yokuphumla, ibhetri ayihlawuliswanga okanye ikhutshwe, kwaye ihlala kule meko ixesha elide.Ukuba umsebenzisi ufuna ukusebenzisa ukuphumla kwebhetri ukulungisa impazamo yendlela ye-coulometric, kufuneka asebenzise i-voltmeter evulekileyo ngeli xesha.Umzobo ongezantsi ubonisa ukuba imeko yesiphoso phantsi kweemeko ezingentla ingalungiswa.
Umzobo 10. Iimeko zokuphelisa impazamo eqokelelweyo yendlela ye-coulometric
Inqaku lesibini eliphambili elibangela ukuchaneka kokuchaneka kwendlela yokulinganisa i-coulomb yimpazamo yomthamo ogcweleyo (i-FCC), engumahluko phakathi komthamo woyilo webhetri kunye nomthamo ogcweleyo webhetri.Umthamo wentlawulo epheleleyo (FCC) iya kuchaphazeleka bubushushu, ukuguga, umthwalo kunye nezinye izinto.Ngoko ke, indlela yokufunda kwakhona kunye nembuyekezo yomthamo ohlawulwa ngokupheleleyo kubaluleke kakhulu kwindlela ye-coulometric.Lo mzobo ungezantsi ubonisa imeko yempazamo ye-SOC xa umthamo wentlawulo opheleleyo uqikelelwa kwaye ungaphantsi.
Umzobo 11. Umzila wempazamo xa umthamo wentlawulo opheleleyo uqikelelwa kwaye ungaphantsi
Ixesha lokuposa: Feb-15-2023