Txoj kev xav ntawm Lithium nqi thiab tso tawm & tsim hluav taws xob suav txoj kev
2. Taw qhia txog roj teeb ntsuas
2.1 Muaj nuj nqi qhia txog hluav taws xob ntsuas
Kev tswj roj teeb tuaj yeem suav tias yog ib feem ntawm kev tswj fais fab.Hauv kev tswj roj teeb, lub ntsuas hluav taws xob yog lub luag haujlwm rau kev kwv yees lub peev xwm roj teeb.Nws lub luag haujlwm tseem ceeb yog saib xyuas qhov hluav taws xob, them nqi / tawm tam sim no thiab roj teeb kub, thiab kwv yees lub xeev them nqi (SOC) thiab lub peev xwm them tag nrho (FCC) ntawm lub roj teeb.Muaj ob txoj hauv kev los kwv yees lub xeev tus nqi ntawm cov roj teeb: qhib-circuit voltage method (OCV) thiab coulometric method.Lwm txoj kev yog dynamic voltage algorithm tsim los ntawm RICHTEK.
2.2 Qhib Circuit Court voltage txoj kev
Nws yog ib qho yooj yim kom paub qhov hluav taws xob ntsuas hluav taws xob siv txoj kev qhib hluav taws xob hluav taws xob, uas tuaj yeem tau txais los ntawm kev txheeb xyuas lub xeev them nqi ntawm qhov qhib hluav taws xob hluav taws xob.Qhov qhib hluav taws xob hluav taws xob yog suav tias yog lub roj teeb hluav taws xob hluav taws xob thaum lub roj teeb tau so ntau dua 30 feeb.
Lub roj teeb voltage nkhaus yuav sib txawv nrog cov load sib txawv, kub thiab roj teeb aging.Yog li ntawd, lub kaw lus qhib-circuit voltmeter tsis tuaj yeem sawv cev rau lub xeev tus nqi;Lub xeev tus nqi tsis tuaj yeem kwv yees los ntawm kev saib lub rooj ib leeg.Hauv lwm lo lus, yog tias lub xeev tus nqi kwv yees tsuas yog los ntawm kev saib lub rooj, qhov yuam kev yuav loj.
Daim duab hauv qab no qhia tau hais tias lub xeev ntawm tus nqi (SOC) ntawm tib lub roj teeb hluav taws xob sib txawv heev los ntawm txoj kev qhib hluav taws xob hluav taws xob hauv qab them thiab tawm.
Daim duab 5. Lub roj teeb hluav taws xob nyob rau hauv kev them nqi thiab kev tso tawm
Nws tuaj yeem pom los ntawm daim duab hauv qab no tias lub xeev ntawm tus nqi sib txawv heev nyob rau hauv cov khoom sib txawv thaum tso tawm.Yog li hauv paus, txoj kev qhib hluav taws xob hluav taws xob tsuas yog tsim rau cov tshuab uas xav tau qhov tseeb ntawm lub xeev qis, xws li cov tsheb siv cov roj teeb txhuas-acid lossis cov khoom siv hluav taws xob tsis cuam tshuam.
Daim duab 6. Roj teeb voltage nyob rau hauv txawv loads thaum tawm
2.3 Txoj kev Coulometric
Lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm coulometry yog txuas lub ntsuas ntsuas ntawm qhov kev them nyiaj / tawm ntawm lub roj teeb.ADC ntsuas qhov hluav taws xob ntawm qhov kev kuaj pom thiab hloov nws mus rau hauv tus nqi tam sim no ntawm lub roj teeb raug them lossis tawm.Lub sijhawm real-time counter (RTC) tuaj yeem sib xyaw cov nqi tam sim no nrog lub sijhawm kom paub tias muaj pes tsawg coulombs ntws.
Daim duab 7. Hom kev ua haujlwm yooj yim ntawm coulomb ntsuas txoj kev
Txoj kev coulometric tuaj yeem xam qhov tseeb ntawm lub sijhawm them nqi thaum them lossis tso tawm.Nrog rau tus nqi coulomb txee thiab tso tawm coulomb txee, nws tuaj yeem xam qhov seem hluav taws xob muaj peev xwm (RM) thiab lub peev xwm them tag nrho (FCC).Nyob rau tib lub sijhawm, tus nqi them ntxiv (RM) thiab lub peev xwm them tag nrho (FCC) kuj tuaj yeem siv los suav cov nqi ntawm lub xeev (SOC = RM / FCC).Tsis tas li ntawd, nws tseem tuaj yeem kwv yees lub sijhawm ntxiv, xws li lub zog qaug zog (TTE) thiab lub zog puv (TTF).
Daim duab 8. Kev suav cov qauv ntawm coulomb txoj kev
Muaj ob yam tseem ceeb uas ua rau qhov tseeb sib txawv ntawm coulomb metrology.Qhov thib ib yog qhov tsub zuj zuj ntawm offset yuam kev hauv kev ntsuas tam sim no thiab ADC ntsuas.Txawm hais tias qhov kev ntsuas qhov yuam kev yog qhov me me nrog cov thev naus laus zis tam sim no, yog tias tsis muaj txoj hauv kev zoo los tshem tawm nws, qhov yuam kev yuav nce nrog lub sijhawm.Daim duab hauv qab no qhia tau hais tias nyob rau hauv kev siv tswv yim, yog tias tsis muaj kev kho nyob rau hauv lub sij hawm ncua sij hawm, qhov kev ua yuam kev ntau yog unlimited.
Daim duab 9. Kev ua yuam kev ntawm coulomb txoj kev
Txhawm rau tshem tawm qhov yuam kev ntau dhau, muaj peb lub sijhawm ua haujlwm ntawm lub roj teeb ib txwm muaj: qhov kawg ntawm kev them nqi (EOC), qhov kawg ntawm qhov tso tawm (EOD) thiab so (Relax).Lub roj teeb tau them tag nrho thiab lub xeev them nqi (SOC) yuav tsum yog 100% thaum lub sijhawm them kawg.Qhov kev tso tawm kawg txhais tau hais tias lub roj teeb tau raug tso tawm tag nrho thiab lub xeev them nqi (SOC) yuav tsum yog 0%;Nws tuaj yeem yog tus nqi hluav taws xob tsis zoo lossis hloov nrog lub nra.Thaum mus txog lub xeev so, lub roj teeb tsis tau them lossis tawm, thiab nws tseem nyob hauv lub xeev no ntev.Yog tias tus neeg siv xav siv lub xeev ntawm lub roj teeb los kho qhov yuam kev ntawm txoj kev coulometric, nws yuav tsum siv qhov qhib-circuit voltmeter nyob rau lub sijhawm no.Daim duab hauv qab no qhia tau hais tias lub xeev ntawm kev them nqi yuam kev raws li cov xwm txheej saum toj no tuaj yeem kho tau.
Daim duab 10. Cov xwm txheej rau kev tshem tawm qhov yuam kev ntawm coulometric method
Qhov thib ob lub ntsiab tseem ceeb ua rau qhov tseeb sib txawv ntawm coulomb metering txoj kev yog tag nrho cov nqi peev (FCC) yuam kev, uas yog qhov txawv ntawm tus tsim lub peev xwm ntawm lub roj teeb thiab lub peev xwm tag nrho ntawm lub roj teeb.Lub peev xwm them tag nrho (FCC) yuav raug cuam tshuam los ntawm qhov kub thiab txias, kev laus, kev thauj khoom thiab lwm yam.Yog li ntawd, txoj kev rov kawm dua thiab kev them nyiaj rov qab los ntawm kev them nqi tag nrho yog qhov tseem ceeb heev rau txoj kev coulometric.Daim duab hauv qab no qhia txog qhov sib txawv ntawm SOC yuam kev thaum lub peev xwm them tag nrho yog overestimated thiab underestimated.
Daim duab 11. Kev ua yuam kev thaum lub peev xwm them tag nrho yog overestimated thiab underestimated
Post lub sij hawm: Feb-15-2023