Cov kev xav tau los tswj kev ua haujlwm ntawm kev sib xyaw ua ke

1. Kev saib xyuas siab raug ntawm overcharge

Thaum overcharging, txhawm rau tiv thaiv qhov nce ntawm sab hauv siab los ntawm qhov kub thiab txias, lub xeev them nyiaj yuav tsum tau nres. Kev saib xyuas IC yuav kuaj xyuas lub roj teeb hluav taws xob, thiab thaum kuaj pom qhov overcharge, lub overcharge pom lub zog MOSFEts, ua rau lawv thaiv thiab nres them. Tam sim no, peb yuav tsum tau them sai sai rau lub siab precision ntawm kev them nyiaj nrhiav kom tau voltage. Thaum them lub roj teeb, tus neeg siv qhov kev txhawj xeeb tseem ceeb yog kom lub roj teeb kom tag nrho thiab xav txog cov teeb meem kev nyab xeeb. Yog li ntawd, thaum qhov tso cai voltage tau mus txog, lub xeev them nyiaj yuav tsum raug txiav tawm. Txhawm rau ua ke ob qho xwm txheej no, yuav tsum muaj cov ntsuas ntsuas siab. Ntes qhov tseeb yog tam sim no 25mV thiab xav tau kev txhim kho.

2. Txo kev siv hluav taws xob ntawm IC

Raws li lub sijhawm dhau mus, qhov hluav taws xob ntawm lithium roj teeb tom qab them nyiaj yuav maj mam txo kom txog thaum nws qis dua tus nqi ntawm cov lus qhia tshwj xeeb, thaum lub sijhawm lub roj teeb yuav tsum tau them. Yog tias lub roj teeb txuas ntxiv siv yam tsis tau them nyiaj, nws yuav siv tsis tau vim muaj qhov tso tawm ntau dhau. Txhawm rau tiv thaiv lub roj teeb ntau dhau, kev saib xyuas IC ntsuas lub roj teeb hluav taws xob. Thaum lub roj teeb voltage qis dua qhov overdischarge nrhiav kom tau voltage, ntsaws lub hwj chim MOSFET mus rau sab tawm kom tsis txhob tawm. Txawm li cas los xij, lub roj teeb nws tus kheej tseem muaj cov paug tawm thiab tswj IC noj tam sim no, yog li khaws IC noj tam sim no kom tsawg.

3. Overcurrent / luv Circuit Court txij nkawm, tsis tshua muaj hluav taws xob kuaj pom, siab precision

Yog tias qhov ua rau luv luv tsis paub, nres qhov tso tawm tam sim. Overcurrent detection siv Rds (ON) ntawm lub hwj chim MOSFET ua inductive impedance los saib xyuas nws qhov voltage poob. Yog hais tias qhov voltage siab tshaj qhov overcurrent detection voltage, nres qhov paug. Txhawm rau ua kom lub zog MOSFETRds () muaj txiaj ntsig zoo them tam sim no thiab tso tawm daim ntawv thov tam sim no, tus nqi impedance yuav tsum tsawg li sai tau, tam sim no impedance yog li ntawm 20m ~ 30m, tam sim no voltage yuav qis.

4. Kev kub siab ua haujlwm

Thaum lub pob roj teeb txuas nrog lub charger, qhov hluav taws xob siab tam sim ntawd tshwm sim, yog li kev saib xyuas IC yuav tsum tau ua kom tau raws li qhov yuav tsum tau muaj ntawm cov hluav taws xob siab.

5. Tsawg roj teeb siv zog

Thaum lub sij hawm tu, lub zog siv hluav taws xob zoo li qub tau txo qis los ntawm 0.1 A.

6.0 V roj teeb

Thaum lub sijhawm khaws cia, qee lub roj teeb yuav poob rau 0V vim lub sijhawm ntev lossis txawv txav, yog li kev saib xyuas IC xav tau kuj tuaj yeem raug them ntawm 0V.

Tuav txoj kev loj hlob zeem muag ntawm integrated circuits

Raws li tau hais los saum toj no, kev saib xyuas IC yav tom ntej yuav txhim kho qhov tseeb ntawm qhov ntsuas hluav taws xob, txo qis kev siv hluav taws xob ntawm kev saib xyuas IC, txhim kho kev tiv thaiv kev ua haujlwm tsis zoo thiab lwm yam haujlwm. Lub charger davhlau ya nyob twg nrog high voltage kuj tseem yog lub hom phiaj ntawm kev tshawb fawb thiab kev loj hlob. Hais txog kev ntim khoom, SOT23-6 tau maj mam hloov mus rau SON6 ntim, thiab yuav muaj CSP ntim thiab txawm tias COB cov khoom lag luam yav tom ntej kom ua tau raws li cov kev cai tam sim no rau lub teeb thiab luv luv.

Functionally, tuav ib tug IC yuav tsum tsis txhob integrate tag nrho cov dej num. Raws li cov ntaub ntawv sib txawv lithium roj teeb, ib qho kev saib xyuas IC tuaj yeem raug ceeb toom, xws li kev saib xyuas ntau dua lossis kev saib xyuas overrelease, uas tuaj yeem txo tus nqi thiab teev.

Muaj nuj nqi module, ntawm chav kawm, ib leeg siv lead ua yog tib lub hom phiaj, xws li cov tuam txhab xov tooj ntawm tes tau ntsib tam sim no kev sib koom ua ke, kev them nqi hluav taws xob thiab kev tswj fais fab IC, thiab lwm yam khoom siv hluav taws xob thiab cov logic IC nti ua ib lub nti dual, tab sis tam sim no kuv xav tau. ua kom qhib Circuit Court impedance ntawm lub hwj chim MOSFET, lub caij nplooj zeeg nrog lwm yam IC kev koom ua ke, txawm tias los ntawm kev txawj tshwj xeeb rau ib tug nti microcomputer, nyiaj kuj yog siab dhau lawm, IBe ntshai. Yog li ntawd, nws yuav siv sij hawm qee lub sij hawm los daws qhov kev saib xyuas ntawm IC ib leeg siv lead ua.