Ib lo lus nug uas nquag nug yog: nyob rau hauv qhov xwm txheej twg lub roj teeb lithium-ion BMS ua kom muaj kev tiv thaiv overcharge, thiab yuav ua li cas thiaj rov qab tau los ntawm nws?
Kev tiv thaiv overcharge rau cov roj teeb lithium-ion raug qhib thaum ib qho ntawm ob qho xwm txheej raug ua tiav. Ua ntej, ib lub cell ncav cuag nws qhov ntsuas overcharge voltage. Qhov thib ob, tag nrho cov roj teeb pob voltage ua tau raws li qhov ntsuas overcharge threshold. Piv txwv li, cov roj teeb lead-acid muaj qhov ntsuas overcharge ntawm 3.65V, yog liBMSfeem ntau teeb tsa lub zog hluav taws xob overcharge ib lub cell rau 3.75V, nrog rau kev tiv thaiv hluav taws xob tag nrho suav ua 3.7V npaug ntawm tus lej ntawm cov cell. Rau cov roj teeb lithium ternary, lub zog hluav taws xob them tag nrho yog 4.2V ib lub cell, yog li BMS kev tiv thaiv overcharge ib lub cell yog teeb tsa rau 4.25V, thiab tag nrho cov xwm txheej tiv thaiv hluav taws xob yog 4.2V npaug ntawm tus lej ntawm cov cell.
Ib lo lus nug uas cov neeg siv feem ntau nug: Puas yog tso lub roj teeb EV them ib hmos (txij thaum ib tag hmo mus txog hnub tom qab) puas ua rau nws puas tsuaj rau yav tom ntej? Cov lus teb nyob ntawm qhov kev teeb tsa tshwj xeeb. Yog tias lub roj teeb thiab lub charger yog cov khoom siv thawj (OEM) sib phim, tsis tas yuav txhawj xeeb - BMS muab kev tiv thaiv txhim khu kev qha. Feem ntau, BMS qhov hluav taws xob tiv thaiv overcharge raug teeb tsa siab dua li qhov tso zis ntawm lub charger. Thaum cov cell tswj tau qhov sib xws zoo (xws li hauv cov roj teeb tshiab), kev tiv thaiv overcharge yuav tsis raug cuam tshuam tom qab them tag nrho. Thaum lub roj teeb laus zuj zus, qhov sib xws ntawm lub cell poob qis, thiab BMS pib los muab kev tiv thaiv.
Qhov tseem ceeb, muaj qhov sib txawv ntawm qhov voltage ntawm BMS qhov overcharge trigger voltage thiab qhov recovery threshold. Qhov voltage no tiv thaiv kev puas tsuaj rau lub voj voog: kev tiv thaiv → voltage poob → kev tiv thaiv → rov them dua → rov tiv thaiv, uas pab ua kom lub roj teeb siv tau ntev dua. Rau kev nyab xeeb thiab kev siv tau ntev tshaj plaws, qhov kev coj ua zoo tshaj plaws yog them thaum xav tau thiab rho lub charger tawm thaum lub roj teeb them tag.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-11-2025
