Nrogkev txhim kho txuas ntxiv ntawm cov tsheb tshiab zog, ntau thiab ntau cov xim tau them rau lub hwj chim roj teeb.Roj teeb, lub cev muaj zog thiab hluav taws xob tswj qhov system yog peb lub hauv paus tseem ceeb ntawm lub zog tshiab tsheb, ntawm cov roj teeb lub zog yog qhov tseem ceeb tshaj plaws, uas tuaj yeem hais tias yog "lub siab" ntawm lub zog tshiab, yog li dab tsi yog lub zog ntawm cov roj teeb tshiab. tsheb zog? Yuav ua li cas txog cov qeb loj?
1. Lead-acid roj teeb
Lub roj teeb lead-acid (VRLA) yog lub roj teeb uas nws cov electrodes feem ntau yog ua los ntawm txhuas thiab nws cov oxides, thiab cov electrolyte yog sulfuric acid tov.Nyob rau hauv lub xeev them ntawm cov hlau lead-acid roj teeb, lub ntsiab tivthaiv ntawm qhov zoo electrode yog lead dioxide, thiab lub ntsiab ntawm qhov tsis zoo electrode yog txhuas; Nyob rau hauv lub xeev tawm, lub ntsiab tivthaiv ntawm qhov zoo thiab tsis zoo electrodes yog lead sulfate.Lub nominal voltage ntawm ib leeg-cell lead-acid roj teeb yog 2.0V, uas tuaj yeem tawm mus rau 1.5V thiab them.rau 2,4v;. Nyob rau hauv daim ntawv thov, 6 ib leeg-cell lead-acid roj teeb feem ntau txuas nrog hauv series los tsim cov nominal 12V lead-acid roj teeb, thiab 24V, 36V, 48V, thiab lwm yam.
Raws li cov thev naus laus zis thev naus laus zis, cov roj ntsha lead-acid tseem yog tib lub roj teeb rau lub tsheb hluav taws xob uas tuaj yeem tsim khoom loj vim lawv cov nqi qis thiab muaj peev xwm tawm tau siab.Txawm li cas los xij, lub zog tshwj xeeb, lub zog tshwj xeeb thiab lub zog ua kom muaj zog-acid muaj roj teeb tsawg heev, thiab cov hluav taws xob siv hluav taws xob tsis tuaj yeem muaj kev nrawm nrawm thiab kev caij tshebqhov ntau.
2. Nickel-cadmium roj teeb thiab nickel-hlau hydride roj teeb
Nickel-cadmium roj teeb (Nickel-cadmium roj teeb, feem ntau hu ua NiCd, hais tias "nye-cad") yog lub roj teeb nrov.Lub roj teeb no siv nickel hydroxide (NiOH) thiab hlau cadmium (Cd) ua cov tshuaj los tsim hluav taws xob.Txawm hais tias nws qhov kev ua tau zoo zoo dua li cov roj teeb txhuas-acid, nws muaj cov hlau hnyav, uas yuav ua rau ib puag ncig tsis zoo tom qab siv thiab tso tseg.
Lub roj teeb nickel-cadmium tuaj yeem them thiab tawm ntau tshaj 500 zaug, uas yog kev lag luam thiab ruaj khov.Nws cov kev tiv thaiv sab hauv yog me me, qhov kev tiv thaiv sab hauv yog me me, nws tuaj yeem them sai sai, thiab nws tuaj yeem muab cov tam sim no loj rau cov khoom thauj, thiab qhov hloov hluav taws xob me me thaum lub sij hawm tso tawm, uas yog qhov zoo tshaj plaws DC fais fab mov roj teeb.Piv nrog rau lwm hom roj teeb, nickel-cadmium roj teeb tuaj yeem tiv taus overcharge lossis overdischarge.
Ni-MH roj teeb yog tsim los ntawm hydrogen ion thiab hlau npib tsib xee, thiab nws lub zog cia yog 30% ntau tshaj li ntawm Ni-Cd roj teeb. .
3. Lithium roj teeb
Lithium roj teeb yog ib hom roj teeb uas siv lithium hlau los yog lithium alloy ua cov khoom siv tsis zoo electrode thiab siv cov tshuaj tsis muaj dej electrolyte.Cov roj teeb lithium tuaj yeem muab faib ua ob pawg: lithium hlau roj teeb thiab lithium ion roj teeb.Cov roj teeb lithium-ion tsis muaj lithium nyob rau hauv lub xeev nws yog xim hlau thiab yog rechargeable.
Cov roj teeb lithium hlau feem ntau siv manganese dioxide ua cov khoom siv electrode zoo, cov hlau lithium lossis nws cov hlau alloy ua cov khoom tsis zoo electrode, thiab siv cov tshuaj tsis muaj dej electrolyte.Cov khoom siv roj teeb lithium feem ntau yog tsim los ntawm: cov khoom siv hluav taws xob zoo, cov khoom siv hluav taws xob tsis zoo, cov khoom sib cais, electrolyte.
Ntawm cov khoom siv cathode, cov khoom siv feem ntau yog lithium cobalt oxide, lithium manganate, lithium hlau phosphate thiab ternary cov ntaub ntawv (polymer ntawm nickel, cobalt thiab manganese).Cov khoom siv electrode zoo nyob hauv qhov loj (qhov loj ntawm qhov zoo thiab qhov tsis zoo ntawm cov khoom siv hluav taws xob yog 3: 1 ~ 4: 1), vim tias qhov ua tau zoo ntawm cov khoom siv electrode ncaj qha cuam tshuam rau kev ua haujlwm ntawm lithium-ion roj teeb, thiab nws cov nqi. kuj ncaj qha txiav txim tus nqi ntawm lub roj teeb.
Ntawm cov khoom siv anode, cov ntaub ntawv anode tam sim no feem ntau yog ntuj graphite thiab graphite dag.Cov ntaub ntawv anode uas tau tshawb pom muaj xws li nitrides, PAS, tin-based oxides, tin alloys, nano anode cov ntaub ntawv, thiab qee qhov sib txuas sib txuas.Raws li ib qho ntawm plaub yam tseem ceeb ntawm lithium roj teeb, cov khoom siv tsis zoo electrode plays lub luag haujlwm tseem ceeb hauv kev txhim kho lub peev xwm thiab lub voj voog kev ua haujlwm ntawm lub roj teeb, thiab yog qhov txuas tseem ceeb hauv nruab nrab ntawm kev lag luam roj teeb lithium.
Lub cell roj yog cov khoom siv hluav taws xob tsis yog hluav taws xob hloov hluav taws xob.Lub zog tshuaj ntawm hydrogen (thiab lwm yam roj) thiab oxygen tau hloov mus rau hauv hluav taws xob tsis tu ncua.Nws txoj hauv kev ua haujlwm yog tias H2 yog oxidized rau hauv H + thiab e- nyob rau hauv qhov kev txiav txim ntawm anode catalyst, H + mus txog qhov zoo electrode los ntawm cov proton exchange membrane, reacts nrog O2 ntawm lub cathode los tsim dej, thiab e- mus txog lub cathode los ntawm lub sab nraud Circuit Court, thiab cov tshuaj tiv thaiv tas li generates tam sim no. Txawm hais tias cov roj cell muaj lo lus "roj teeb", nws tsis yog lub zog ciantaus ntawv nyob rau hauv ib txwm kev xav, tab sis lub zog tsim khoom siv. Qhov no yog qhov sib txawv loj tshaj plaws ntawm cov roj cell thiab cov roj teeb ib txwm muaj.
Post lub sij hawm: Jun-05-2022