Lub tswv yim ntawmkev sib npaug ntawm testej zaum feem ntau ntawm peb paub. Qhov no yog vim tias qhov sib xws tam sim no ntawm cov cell tsis zoo txaus, thiab kev sib npaug pab txhim kho qhov no. Ib yam li koj tsis tuaj yeem nrhiav tau ob nplooj zoo sib xws hauv ntiaj teb, koj kuj tsis tuaj yeem nrhiav tau ob lub cell zoo sib xws. Yog li, thaum kawg, kev sib npaug yog los daws qhov tsis zoo ntawm cov cell, ua haujlwm ua kev ntsuas them rov qab.
Cov yam twg qhia txog kev tsis sib xws ntawm cov hlwb?
Muaj plaub yam tseem ceeb: SOC (Xeev ntawm Kev Them), kev tiv thaiv sab hauv, tus kheej tso tawm tam sim no, thiab lub peev xwm. Txawm li cas los xij, kev sib npaug tsis tuaj yeem daws tau plaub qhov tsis sib xws no. Kev sib npaug tsuas yog tuaj yeem them rau qhov sib txawv ntawm SOC, thiab daws qhov tsis sib xws ntawm kev tso tawm tus kheej. Tab sis rau kev tiv thaiv sab hauv thiab lub peev xwm, kev sib npaug tsis muaj zog.
Vim li cas Cell Inconsistency thiaj li tshwm sim?
Muaj ob qho laj thawj tseem ceeb: ib qho yog qhov tsis sib xws los ntawm kev tsim thiab ua cov cell, thiab qhov thib ob yog qhov tsis sib xws los ntawm qhov chaw siv cell. Qhov tsis sib xws ntawm kev tsim khoom tshwm sim los ntawm cov yam xws li cov txheej txheem ua thiab cov ntaub ntawv, uas yog kev yooj yim ntawm qhov teeb meem nyuaj heev. Qhov tsis sib xws ntawm ib puag ncig yooj yim dua rau kev nkag siab, vim tias txhua lub cell txoj haujlwm hauv PACK txawv, ua rau muaj qhov sib txawv ntawm ib puag ncig xws li kev hloov pauv me ntsis ntawm qhov kub thiab txias. Raws li lub sijhawm dhau mus, cov kev sib txawv no sib sau ua ke, ua rau cov cell tsis sib xws.
Kev Sib Npaug Ua Haujlwm Li Cas?
Raws li tau hais ua ntej lawm, kev sib npaug yog siv los tshem tawm qhov sib txawv ntawm SOC ntawm cov cell. Qhov zoo tshaj plaws, nws ua rau txhua lub cell SOC zoo ib yam, tso cai rau txhua lub cell kom ncav cuag qhov siab thiab qis voltage txwv ntawm kev them thiab tso tawm tib lub sijhawm, yog li ua rau lub peev xwm siv tau ntawm lub roj teeb. Muaj ob qho xwm txheej rau qhov sib txawv ntawm SOC: ib qho yog thaum lub peev xwm ntawm cell zoo ib yam tab sis SOCs sib txawv; qhov tod tes yog thaum lub peev xwm ntawm cell thiab SOCs ob qho tib si sib txawv.
Qhov xwm txheej thawj zaug (sab laug tshaj plaws hauv daim duab hauv qab no) qhia txog cov cell uas muaj tib lub peev xwm tab sis SOCs sib txawv. Lub cell uas muaj SOC me tshaj plaws mus txog qhov txwv tsis pub tawm ua ntej (xav tias 25% SOC yog qhov txwv qis dua), thaum lub cell uas muaj SOC loj tshaj plaws mus txog qhov txwv tsis pub them ua ntej. Nrog kev sib npaug, txhua lub cell khaws tib SOC thaum lub sijhawm them thiab tawm.
Qhov xwm txheej thib ob (tus thib ob ntawm sab laug hauv daim duab hauv qab no) cuam tshuam nrog cov cell uas muaj peev xwm sib txawv thiab SOCs. Ntawm no, lub cell uas muaj peev xwm me tshaj plaws them thiab tso tawm ua ntej. Nrog kev sib npaug, txhua lub cell khaws tib lub SOC thaum lub sijhawm them thiab tso tawm.
Qhov Tseem Ceeb ntawm Kev Sib Npaug
Kev sib npaug yog ib qho tseem ceeb rau cov cell tam sim no. Muaj ob hom kev sib npaug:kev sib npaug nquagthiabkev sib npaug passiveKev sib npaug passive siv cov resistors rau kev tso tawm, thaum kev sib npaug nquag cuam tshuam nrog kev ntws ntawm cov nqi ntawm cov cell. Muaj qee qhov kev sib cav txog cov lus no, tab sis peb yuav tsis mus rau hauv qhov ntawd. Kev sib npaug passive feem ntau siv hauv kev xyaum, thaum kev sib npaug nquag tsis tshua muaj.
Kev txiav txim siab txog qhov sib npaug tam sim no rau BMS
Rau kev sib npaug tsis siv neeg, yuav tsum txiav txim siab li cas txog qhov tam sim no sib npaug? Qhov zoo tshaj plaws, nws yuav tsum loj li sai tau, tab sis cov yam xws li tus nqi, kev tso cua sov, thiab qhov chaw yuav tsum tau muaj kev pom zoo.
Ua ntej xaiv qhov sib npaug tam sim no, nws yog ib qho tseem ceeb kom nkag siab seb qhov sib txawv ntawm SOC yog vim qhov xwm txheej ib lossis qhov xwm txheej ob. Hauv ntau qhov xwm txheej, nws ze rau qhov xwm txheej ib: cov cell pib nrog lub peev xwm zoo sib xws thiab SOC, tab sis raws li lawv siv, tshwj xeeb tshaj yog vim qhov sib txawv ntawm kev tso tawm tus kheej, txhua lub cell SOC maj mam dhau los ua qhov sib txawv. Yog li ntawd, lub peev xwm sib npaug yuav tsum tsawg kawg tshem tawm qhov cuam tshuam ntawm qhov sib txawv ntawm kev tso tawm tus kheej.
Yog tias txhua lub cell muaj qhov kev tso tawm tus kheej zoo ib yam, kev sib npaug yuav tsis tsim nyog. Tab sis yog tias muaj qhov sib txawv ntawm qhov tam sim no tso tawm tus kheej, qhov sib txawv ntawm SOC yuav tshwm sim, thiab kev sib npaug yog qhov xav tau los them rau qhov no. Tsis tas li ntawd, txij li thaum lub sijhawm sib npaug txhua hnub yog txwv thaum kev tso tawm tus kheej txuas ntxiv txhua hnub, lub sijhawm tseem ceeb yuav tsum tau xav txog.
Lub sijhawm tshaj tawm: Lub Xya Hli-05-2024
