Cov roj teeb yog ib qho tseem ceeb ntawm ntau yam khoom siv thiab cov tshuab, siv txhua yam los ntawm lub tsheb thiab smartphones mus rau hnub ci vaj huam sib luag thiab khoom siv kho mob. Ob hom roj teeb uas siv ntau tshaj plaws yog lithium-ion (Li-ion) thiab cov roj teeb lead-acid. Nov yog qee qhov sib txawv tseem ceeb ntawm ob:
1. Cov khoom siv hluav taws xob
Lead-acid roj teebsiv cov phaj ua los ntawm txhuas thiab txhuas oxide, thaum Li-ion roj teeb siv graphite (carbon) anodes thiab hlau oxide cathodes xws li lithium cobalt oxide (LiCoO2) los yog lithium hlau phosphate (LiFePO4). Li-ion roj teeb kuj muaj lithium electrolytes, uas pab txhawb ion ntws ntawm cathode thiab anode.
2. Roj teeb muaj peev xwm
Li-ion roj teebFeem ntau muaj lub zog ceev dua li cov roj ntsha lead-acid, txhais tau tias lawv tuaj yeem khaws ntau lub zog hauv qhov chaw me me. Qhov no ua rau lawv zoo tagnrho rau cov khoom siv txawb thiab nqa tau yooj yim uas xav tau lub zog tso zis ntau, xws li smartphones thiab laptops. Lead-acid roj teeb, ntawm qhov tod tes, zoo dua rau cov ntawv thov uas lub roj teeb tsis tas yuav tsum yog lub teeb yuag lossis compact, xws li cov khoom siv hluav taws xob rov qab rau cov tsev lossis cov chaw khaws ntaub ntawv.
3. Roj teeb nyhav
Li-ion roj teeb feem ntau sib dua li cov roj teeb txhuas-acid, uas ua rau lawv yooj yim dua rau kev siv mobile. Vim tias cov roj ntsha lead-acid yog ua los ntawm cov hlau hnyav, lawv yuav hnyav dua.
4. Them nqi thiab tso tawm voj voog
Li-ion roj teeb muaj lub neej ntev dua li cov roj ntsha lead-acid, uas txhais tau hais tias lawv tuaj yeem rov ua dua thiab tawm ntau zaus. Qhov nruab nrab Li-ion roj teeb tuaj yeem nyob nruab nrab ntawm 500 thiab 1,500 lub voj voog, thaum lub roj teeb txhuas-acid feem ntau kav li ntawm 300 thiab 700 mus.
5. Nqe
Cov roj teeb li-ion feem ntau kim dua li cov roj ntsha lead-acid, tshwj xeeb tshaj yog rau cov roj teeb loj lossis muaj peev xwm loj. Txawm li cas los xij, tus nqi sib txawv yog maj mam ploj mus vim Li-ion thev naus laus zis tau txais ntau dua thiab cov nqi tsim khoom txo qis.
6. Lub neej ntev
Lub roj teeb lub neej nyob ntawm ntau yam, suav nrog kev siv, kev them nqi thiab kev tso tawm, thiab kev cia khoom. Qhov nruab nrab, cov roj ntsha lead-acid kav ntev li ob mus rau peb xyoos, thaum cov roj teeb lithium tuaj yeem siv tau tsib xyoos lossis ntau dua.
7. Kev ceev faj txog kev nyab xeeb
Ob lub Li-ion thiab lead-acid roj teeb tuaj yeem ua rau muaj kev phom sij yog tias tsis ua haujlwm zoo. Li-ion roj teeb muaj qhov ua rau o, overheating, thiab tawg ruptures yog tias lawv overcharged, lub cev puas tsuaj los yog raug kub. Lead-acid roj teeb tuaj yeem xau cov kua qaub thiab tsim cov pa roj lom yog tias overcharged lossis puas. Kev tuav kom zoo, kev teeb tsa, kev saib xyuas, thiab kev pov tseg yog qhov tseem ceeb rau ob hom roj teeb kom muaj kev nyab xeeb.
8. Tus nqi rov ua dua
Ob lub Li-ion thiab lead-acid roj teeb tuaj yeem rov ua dua thaum lawv mus txog qhov kawg ntawm lawv lub neej muaj txiaj ntsig. Li-ion roj teeb muaj cov hlau tseem ceeb xws li cobalt, npib tsib xee, thiab lithium, uas tuaj yeem muab rho tawm thiab rov siv dua hauv cov roj teeb tshiab lossis lwm yam khoom. Lead-acid roj teeb kuj tseem tuaj yeem rov ua dua tshiab, nrog cov hmoov txhuas siv los ua cov roj teeb tshiab lossis lwm yam khoom siv lead ua.
Nyob rau hauv xaus, Li-ion roj teeb thiab lead-acid roj teeb yog ob qho tib si tseem ceeb thiab dav siv lub zog cia daws teeb meem, nrog rau lawv tus kheej lub zog thiab tsis muaj zog. Thaum xaiv ntawm ob, nws yog ib qho tseem ceeb uas yuav tau xav txog tej yam xws li lub zog muaj peev xwm, qhov hnyav, tus nqi, kev nyab xeeb, thiab kev xaiv rov ua dua tshiab.