Dab tsi yog Qhov Tsim Nyog Them Tam Sim No Rau Lithium Roj Teeb?

Dab tsi yog qhov tsim nyog them tam sim no rau roj teeb lithium? Tsis muaj ib qho txheej txheem kev sib koom ua ke rau qhov no, tab sis nws yog nyob ntawm hom roj teeb lithium thiab seb nws txhawb nqa lub tshuab them ceev, kom koj tuaj yeem paub ntau npaum li cas lithium roj teeb uas them tam sim no tsim nyog dua. Tom qab paub cov hom thiab thaj chaw ntawm lithium roj teeb, yuav ua li cas los xam cov kev them nqi tam sim no ntawm lithium roj teeb? Qhov no yog txiav txim siab los ntawm cov khoom siv tshuaj lom neeg ntawm cov roj teeb lithium. Yog li, nws yog qhov yuav tsum tau teeb tsa cov kev ua haujlwm ntawm kev them nyiaj IC raws li kev ua haujlwm ntawm lub roj teeb lithium nws tus kheej kom ua tiav qhov tseeb, muaj kev nyab xeeb thiab siv cov roj teeb lithium.

Kev them hluav taws xob tam sim no ntawm cov roj teeb lithium nyob ntawm lub peev xwm. Qhov loj dua tam sim no, qhov nyuaj dua nws yog kom tag nrho cov roj teeb. Qhov no ua tiav los tiv thaiv lub roj teeb lithium tuaj yeem siv tau ib txwm, vim tias kev them nqi ntau thiab ntau dhau yuav ua rau cov roj teeb lithium tawg los yog tsis ua haujlwm, lossis tseem tawg.

Raws li qhov tau them tam sim no ntawm lub teeb them sai ntawm cov roj teeb lithium muaj kev txhawj xeeb, raws li cov txheej txheem txheej txheem, qhov zoo ntawm kev them tam sim no ntawm cov roj teeb lithium yog tau muab faib ua peb theem.

1. Cov khoom siv hluav taws xob zoo tshaj plaws thaum lub sijhawm them ua ntej: qhov ntawd yog, thaum pib / tsis thauj khoom ntawm lub roj teeb lithium qis dua qhov ua ntej, yuav tsum tau ua ntej mus ua ntej tsis tau them nyiaj. Rau ib lub lithium ion roj teeb, qhov ntsuas no feem ntau yog 3.0V. Nyob rau qib no, lub sijhawm them ua ntej tam sim no yog kwv yees li 10% ntawm cov theem tamsis no-cov theem hluav taws xob tsis tu ncua.

2. Lub tshuab hluav taws xob zoo tshaj plaws thaum lub sijhawm them tam sim: qhov sib hu uas tsis tu ncua txhais tau hais tias qhov tam sim no tas mus li thiab qhov voltage nce siab, thiab tom qab ntawd nws nkag mus rau theem them ceev. Feem ntau ntawm cov roj teeb hluav taws xob tas li tam sim no tau teeb tsa nruab nrab ntawm 0.4 thiab 0.6C, uas tuaj yeem nkag siab 0.5C, uas yog, nws tuaj yeem them tag nrho nyob rau hauv txog ob teev tsis xav txog lwm yam. Qhov laj thawj vim li cas 0.5C raug xaiv yog tias qhov tam sim no muaj qhov sib npaug zoo ntawm lub sijhawm them thiab kev them nqi kev nyab xeeb.

3. them tam sim no thaum lub sij hawm hluav taws xob tas mus li: Rau ib qho roj teeb ntawm lithium-ion roj teeb, thaum lub roj teeb tau mus txog qee qhov hluav taws xob muaj nqis, nws nkag mus rau qhov hluav taws xob tas li. Cov nqi no feem ntau yog 4.2V. Nyob rau theem no, qhov voltage tseem tsis hloov thiab qhov tam sim no raug txiav tawm; qhov kev txo tawm tam sim no yog ib qho kev ua tiav zuj zus, feem ntau cov roj teeb lithium tiv thaiv xaiv 0.01C raws li qhov txiav tawm tam sim no, uas txhais tau hais tias txoj kev them nqi nkag mus rau hauv lub xeev kawg. Thaum them tas lawm, lub sijhawm them tam sim no poob rau xoom.

Cov tub ntxhais ntawm qhov zoo tshaj plaws them tam sim no rau roj teeb lithium yog qhov tsim tam sim no thaum lub sijhawm them tas li. Nws yuav tsum nco ntsoov tias feem ntau cov roj teeb lithium tau zoo dua tsim los ntawm kev coj tus nqi ntawm 0.5C. Piv txwv, cov peev txheej muaj peev xwm ntawm 18650 lithium roj teeb yog 1800-2600mAh. Xaiv 1A them, thiab tus nqi hom yog 1200-1500mAh, thiab cov them tam sim no ntawm 0.5C yog 0.7A. Lub siab them hluav taws xob tam sim no ntawm lithium roj teeb yog txiav txim siab nruj los ntawm cov qauv roj teeb. Yog li, ntau lub chaw tsim khoom siv lithium roj teeb tsis pom zoo nrog cov kev cai no, qee qhov tau teeb tsa ntawm 0.6C, thiab qhov yuav tsum tau ntau tshaj plaws rau cov khoom siv roj teeb lithium yog 1C.

Yuav ua li cas los xam qhov them hloov tam sim no ntawm lithium roj teeb?

Qhov siab tshaj qhov them nqi tam sim no uas lub roj teeb lithium tuaj yeem txais yog feem ntau 1C lossis tsawg dua. Kev them nqi tam sim no ntawm lub roj teeb lithium feem ntau yog cim rau ntawm lub charger. Koj tuaj yeem pom tias lub roj teeb lithium feem ntau siv hluav taws xob tas li thiab tom qab ntawv tas li qhov ntsuas hluav taws xob. Thaum lub charger txwv qhov voltage, nws yuav ua trickle charging, yog li lub sijhawm them nyiaj yuav tsum ntxiv txog 1 teev. Yog tias koj xav xam lub sijhawm them lub sijhawm, faib lub roj teeb uas muaj peev xwm los ntawm lub sijhawm them tam sim no, ntxiv qhov hloov pauv hloov, thiab ntxiv ib qho kawg ntawm cov teev yuav luag muaj.

Lithium iron phosphate battery feem ntau tuaj yeem siv 1C lossis siab dua (15C) them thiab tawm tam sim no, yog li lawv tsim dua raws li roj teeb zog. Lub sijhawm them ntawm 18650 roj teeb yog tib yam li lub sijhawm ntawm txhua roj teeb theem nrab. Ntawd yog, lub sijhawm them ntawm lub roj teeb sib npaug rau qhov sib luag ntawm cov nominal muaj peev xwm mus rau qhov them tam sim no. Txawm li cas los xij, vim sab hauv impedance tsim tawm thaum lub roj teeb lithium, lub roj teeb 18650 tau them Lub sijhawm yuav tsum xav txog yam tseem ceeb uas kov yeej qhov tsis haum no.