Thaum lub roj teeb lithium-ion raug them, qhov zoo lithium atoms poob hluav taws xob thiab oxidize rau lithium ions. Lithium ions taug kev los ntawm cov roj hluav taws xob mus rau qhov tsis zoo electrode, nkag rau hauv qhov ntxaij tsis zoo, thiab nce rau cov xaim hluav taws xob, uas yog txo rau lithium atoms. Thaum kev rho tawm, tag nrho qhov program rov qab. Txhawm rau tiv thaiv cov ntawv luv luv los ntawm kov ncaj qha rau qhov zoo thiab qhov tsis zoo ntawm lub roj teeb, daim ntawv diaphragm nrog ntau qhov me me ntxiv rau kom tiv thaiv luv luv kev ua haujlwm. Cov ntawv diaphragm zoo kuj tseem tuaj yeem kaw lub qhov zoo thaum lub roj teeb kub dhau, yog li cov roj lithium tsis tuaj yeem hla, kom nkim lub zog tub rog, tiv thaiv qhov tshwm sim ntawm kev phom sij.
Kev siv roj teeb lithium ntau dua rau qhov hluav taws xob ntau dua 4.2V pib tsim cov kev mob tshwm sim. Qhov siab dua tus nqi overcharge, qhov siab dua. Thaum qhov hluav taws xob ntawm lub xovtooj ntawm lithium tau tshaj li 4.2V, tsawg dua ib nrab ntawm cov roj ntsha lithium hauv cov khoom siv anode tau sab laug, thiab lub xovtooj cia feem ntau sib tsoo, tas mus li txo lub roj teeb' s muaj peev xwm. Yog tias lub tsub txuas ntxiv, cov roj ntsha lithium txuas ntxiv yuav nthuav tawm rau saum npoo ntawm cov khoom tsis zoo, txij li qhov tsis zoo ntawm tes twb tau sau nrog lithium atoms. Cov lithium atoms loj hlob dendritic muaju los ntawm anode nto nyob rau hauv cov kev taw qhia los ntawm cov lithium ions tuaj. Cov ntawv hlau lithium no yuav dhau los ntawm daim nyias nyias ntawv, luv luv ntawm lub anode thiab cathode. Qee zaum lub roj teeb tawg ua ntej luv luv Circuit Court tshwm sim, vim hais tias nyob rau hauv cov txheej txheem overcharging, cov khoom siv xws li electrolytes yuav tawg kom tsim cov roj, ua rau lub plhaub roj teeb lossis lub siab lub ntsws kom tawg thiab tawg, ua kom oxygen nkag mus thiab cuam tshuam nrog lithium atoms sib sau rau ntawm nplaim ntawm cov hluav taws xob tsis zoo, ua rau muaj kev tawg.
Yog li ntawd, thaum them lub roj teeb lithium, nws yog ib qho tsim nyog yuav tsum tau teem ib theem siab ntawm qhov hluav taws xob kom lub roj teeb lub neej, kev muaj peev xwm thiab kev nyab xeeb tuaj yeem raug suav nrog tib lub sijhawm. Qhov zoo ntawm them lub teeb hluav taws xob sab sauv yog 4.2V. Nws kuj yuav tsum muaj hluav taws xob qis dua thaum siv roj ntsha lithium. Thaum qhov voltage ntawm lub cell poob qis dua 2.4V, qee yam ntawm cov khoom pib tawg. Thiab vim tias lub roj teeb yuav tso nws tus kheej tawm, lub sijhawm ntev dua voltage yuav qis dua, yog li nws yog qhov zoo tshaj kom tsis txhob tso tawm 2.4V kom nres. Txij li ntawm 3.0V mus rau 2.4V, lithium roj teeb tawm tsuas yog kwv yees li 3% ntawm lawv lub peev xwm. Yog li no, 3.0V yog kev tso tawm zoo tagnrho hlais tawm voltage lithium roj teeb Hoobkas.
Ntxiv nrog rau qhov txwv ntawm qhov voltage, qhov txwv ntawm qhov tam sim no tseem tsim nyog thaum them tawm thiab tawm. Thaum qhov tam sim no loj dhau lawm, lithium ions tsis muaj sijhawm nkag mus rau hauv lub ntxaij ntoo cia thiab yuav sau rau saum npoo ntawm cov khoom. Thaum cov ions no tau txais hluav taws xob ntau, lawv tsim lithium atom muaju ntawm cov khoom' s nto, uas, zoo li overcharging, tuaj yeem txaus ntshai. Thaum lub roj teeb foob tawg, nws yuav tawg.
Yog li no, kev tiv thaiv ntawm cov roj teeb lithium-ion yuav tsum muaj tsawg kawg: kev txwv tsis pub tshaj ntawm lub roj teeb hluav taws xob, kev txo qis ntawm kev tso tawm hluav taws xob thiab kev txwv siab tshaj ntawm tam sim no. Cov roj teeb lithium dav dav, ntxiv rau lithium roj teeb tub ntxhais, yuav muaj ib qho ntawm cov khoom thaiv kev tiv thaiv, daim txiag tiv thaiv no yog muab peb qhov kev tiv thaiv no. Txawm li cas los xij, peb daim phiaj tiv thaiv no qhia meej meej tsis txaus, lub ntiaj teb' s lithium roj teeb tawg qhov teeb meem tseem yog ntau. Txhawm rau kom muaj kev nyab xeeb ntawm lub roj teeb, qhov ua rau lub roj teeb tawg yuav tsum txheeb xyuas ntau dua.
