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LiFePO4 roj teeb - Lub ntsiab kwj roj teeb rau hnub ci teeb pom kev zoo

Sijhawm: 2021-11-03 Ntaus: 25

LiFePO4 roj teeb - Lub ntsiab kwj roj teeb rau hnub ci teeb pom kev zoo

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Nrog ntau thiab ntau txoj kev lag luam loj hauv ntiaj teb tab tom ua rau lub siab xav mus rau lub ntiaj teb cov pa roj carbon nruab nrab lub hom phiaj nyob ib ncig ntawm ib nrab xyoo pua, peb tab tom pom kev nce qib hauv kev xav tau ntawm txoj kev hnub ci thiab dej nyab teeb raws li kev daws teeb meem pheej yig los teeb tsa cov khoom ntiag tug, txoj kev thiab cov chaw pej xeem nrog cov teeb pom kev zoo LED. 


Rechargeable roj teeb yog ib qho ntawm cov khoom tseem ceeb tshaj plaws rau kev ntseeg siab ntawm lub hnub ci teeb pom kev zoo. Peb txhua tus paub tias qhov chaw ntawm lub hnub ci vaj huam sib luag kom tau txais tag nrho raug rau lub hnub yog qhov tseem ceeb rau kev ua haujlwm ntawm lub hnub ci. Qhov no yog qhov tseem ceeb, tab sis nws cov kev ua tau zoo kuj yog nyob ntawm qhov zoo ntawm cov roj teeb hauv lub hnub ci. Hom thiab qhov xwm txheej ntawm cov roj teeb txiav txim siab ntev npaum li cas cov hnub ci vaj huam sib luag ntawm tib qhov loj xav tau hnub ci. Qee lub roj teeb tsuas yog xav tau plaub teev ntawm lub hnub thiab nws yuav muab teeb rau tag nrho hmo ntuj. Lwm tus yuav xav tau hnub ci tag nrho. 


Nyob rau hauv tsab xov xwm no peb yuav saib cov roj teeb rechargeable rau hnub ci teeb pom kev zoo. Lawv yog dab tsi, thiab qhov zoo thiab qhov tsis zoo ntawm cov roj teeb no los pab koj nkag siab qhov zoo thiab qhov tsis zoo ntawm cov roj teeb no. 


Ni-Cd, Ni-MH, thiab Lithium-ion yog peb hom loj ntawm cov roj teeb uas siv tau tam sim no. 


Ni-Cd, npib tsib xee-cadmium. Nws muaj nickel thiab cadmium, cais thiab alkaline. Qhov no yog cov roj teeb uas nrov tshaj plaws rau cov khoom siv nqa tau rov qab rau xyoo 1990's, tab sis nws tau raug txiav tawm vim tias nws muaj cov hlau hnyav cadmium uas ua rau muaj kev puas tsuaj rau ib puag ncig. Peb tsis tas yuav piav qhia txog nws ntawm kab lus no. 


Ni-MH roj teeb zoo ib yam li Nickel cadmium roj teeb tab sis nws muaj cov nickel hydroxide ua cov electrodes zoo, Hydrogen absorbing alloys (txuas) raws li cov electrodes tsis zoo thiab Potassium hydroxide alkaline electrolyte. Cell voltage ntawm Ni-MH roj teeb yog 1.2V thiab them voltage yog hais txog 1.6V ib lub xovtooj. Nrog rau qhov tsis tshua muaj hluav taws xob hauv ib lub xov tooj ntawm tes, cov tuam txhab tsim khoom yuav tsum sib txuas ntau lub hlwb los tsim cov pob roj teeb kom lawv cov hluav taws xob ua kom tsis muaj zog txaus hauv qhov loj thiab tsis raug nqi. Qhov tsis zoo ntawm Ni-MH roj teeb yog nws tus kheej tawm tus nqi siab. Yog tias koj tso lub roj teeb Ni-MH tag nrho rau ob peb lub hlis nws yuav poob feem ntau ntawm nws cov nqi. Lub roj teeb Ni-MH ib txwm tuaj yeem poob los ntawm 4-20% ntawm nws cov nqi tsuas yog thawj hnub thiab tom qab ntawd tus kheej tso tawm tus nqi poob mus txog 1% nyob rau ib hnub nyob ntawm qhov kub thiab txias.

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Lithium roj teeb rau hnub ci txoj kev teeb tau dhau los ua kev daws teeb meem ntau dua. Peb txhua tus paub tias cov roj teeb lithium tseem kim heev rau lwm hom, tab sis nws yog qhov ncaj ncees hais tias lawv tau dhau los ua tus nqi pheej yig dua rau hnub ci kev sib koom ua ke. Hauv 6 xyoo dhau los, tus nqi ntawm lithium roj teeb poob los ntawm yuav luag 80%. Muaj ntau hom roj teeb lithium uas tuaj yeem siv rau Solar Street Light systems. Peb qhov kev paub tau pom tias qhov kev daws teeb meem zoo tshaj plaws rau hnub ci teeb pom kev zoo yog LiFePO4 roj teeb.


Lithium-ion (li-ion) tam sim no yog hom roj teeb uas siv tau tshaj plaws rau ntau yam khoom siv thiab hnub ci. Cov qauv qub ntawm lithium roj teeb siv lithium hlau, tab sis vim qhov tsis ruaj khov thiab teeb meem kev nyab xeeb, tam sim no siv lithium ions hloov. Cov roj teeb lithium-ion muaj txiaj ntsig zoo dua ntawm lub zog siab ceev thiab kev saib xyuas qis los ntawm kev sib piv nrog Ni-Cd thiab Ni-MH uas ua rau lawv zoo tshaj plaws rau cov khoom siv hluav taws xob hnub ci thiab lwm yam khoom siv hluav taws xob lossis tsheb.


Cov roj teeb lithium-ion feem ntau yog Li-cobalt, Li-manganese, Li-phosphate thiab NMC (lithium nickel manganese cobalt oxide). Txhua lub roj teeb lithium-ion no siv cov khoom siv cathode sib txawv, yog li txhua tus ntawm lawv muaj qhov zoo thiab qhov tsis zoo. Li-cobalt roj teeb tau nrov siv hauv cov khoom siv hluav taws xob, thaum cov roj teeb li-phosphate siv hauv tsheb fais fab, teeb pom kev zoo thiab hnub ci teeb pom kev zoo.


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                Li-ion roj teeb qauv. Qhov chaw - http://electronicdesign.com


Lithium Iron Phosphate roj teeb

Cov roj teeb lithium Iron Phosphate muaj kev nyab xeeb dua li Li-cobalt thiab Li-manganese roj teeb, thiab lawv muaj lub neej ntev dua thiab muaj peev xwm tsav tau ntau dua. Txawm li cas los xij, LiFePO4 roj teeb qhov tsis zoo yog qhov muaj peev xwm qis tshaj plaws ntawm txhua hom lithium-ion roj teeb. Txawm hais tias nws qis dua los ntawm kev sib piv nrog rau lwm hom roj teeb lithium-ion, nws yog qhov haum rau lub hnub ci txoj kev teeb lossis teeb pom kev nyab xeeb uas tsis tas yuav muaj hluav taws xob loj heev los txhawb lub zog.


Lithium-ion roj teeb zoo

  • Cov roj teeb lithium-ion muaj lub zog siab ceev, siab dua Ni-MH, ob zaug siab li Ni-Cd thiab ntau dua peb zaug siab dua li cov roj lead acid.

  • Li-ion roj teeb muaj tus nqi qis tus kheej tawm

  • Li-ion roj teeb tsis tsim cov nyhuv nco;

  • Li-ion roj teeb yog xyaum tsis tu ncua, uas yog tshwj xeeb tshaj yog pab tau rau lub hnub ci teeb pom kev zoo;

  • Li-ion roj teeb muaj kev nyab xeeb rau ib puag ncig yam tsis muaj tshuaj lom;

  • Vim muaj zog ceev ceev, li-ion roj teeb muaj lub teeb yuag thiab me me.

  • Li-ion roj teeb tso cai them ceev kom muaj peev xwm puv;

  • Kev nyab xeeb - li-phosphate roj teeb muaj thermal stability thiab tshuaj lom neeg zoo heev.

Lithium-ion roj teeb Disadvantages

  • Li-ion roj teeb muaj cov nqi tsim khoom siab uas ua rau cov nqi muag khoom siab.

  • Li-ion roj teeb yuav tsum muaj kev tiv thaiv circuits kom txwv tsis pub muaj hluav taws xob thiab cov khoom siv tam sim no thiab ua kom muaj kev nyab xeeb zoo dua;

  • Qee lub roj teeb Li-ion zoo li li-phosphate muab tus nqi qis;


Rechargeable roj teeb tshwj xeeb lub zog sib piv daim duab

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Rechargeable roj teeb nominal voltage daim ntawv

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Rechargeable roj teeb nruab nrab muaj peev xwm rau hnub ci teeb daim duab

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Rechargeable roj teeb nruab nrab tus kheej tawm tus nqi ib lub hlis sib piv daim ntawv

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Rechargeable roj teeb kwv yees lub voj voog lub neej piv daim duab

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Rechargeable roj teeb theoretical lifetime expectancy nyob rau hauv daim ntawv qhia hnub ci teeb pom kev zoo

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Rechargeable roj teeb kub qhov sib piv daim duab

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Tus nqi nruab nrab rau lub hnub ci teeb siv qee yam roj teeb

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