Txiav txim siab qhov kev teeb tsa, uas yog, pes tsawg watts ntawm lub hnub ci vaj huam sib luag kom them tag nrho cov roj teeb.
Qhov tseeb, nws yog kev siv hluav taws xob ntawm cov teeb ci thiab lub zog tsim hluav taws xob ntawm lub hnub ci vaj huam sib luag.
Kev siv hluav taws xob feem ntau yog ntsuas los ntawm KWH,
uas yog tawg raws li nram no: kWH=1000 * WH. Yog li 1WH yog ib txhiab ntawm ib kilowatt-teev.
Kev siv hluav taws xob=LED hnub ci txoj kev teeb lub zog * lub zog ua haujlwm puv sijhawm
Siv lub teeb 30W ua haujlwm rau 6 teev, 3 teev ua haujlwm puv thiab 3 teev ua haujlwm ib nrab, piv txwv li, kev siv hluav taws xob yog:
30W * (3 * 100% ntxiv rau 3 * 50%) =135 WH
Feem ntau, pes tsawg hnub txhawb nqa los ntawm lithium roj teeb nyob rau hauv nag thiab huab hnub yog 2-3 hnub, uas yog, thaum tsis muaj hnub nyob rau lub caij ntuj no thiab lub caij nplooj zeeg, hluav taws xob nyob rau hauv lub roj teeb yuav kav mus txog rau 2-3 hnub. Tab sis hauv kev siv tiag tiag, thaum lub roj teeb tau them tag nrho, nws yuav kav ntev dua 2-3 hnub. Ntawm ib sab, txawm tias huab cua los nag, hnub ci vaj huam sib luag tseem tuaj yeem them qee qhov hluav taws xob. Ntawm qhov tod tes, tus maub los muaj tsis siv neeg lub zog txo, uas tuaj yeem txo qhov ci ntawm lub hnub ci txoj kev teeb, raws li qhov hluav taws xob poob los ntawm lub roj teeb kom txuag hluav taws xob. Los ntawm cov kev ntsuas no txhawm rau nce cov nyiaj tau los thiab txo kev siv nyiaj, 3-5 hnub tuaj yeem siv.
Tom qab ntawd peb xam raws li 3 hnub,
lub peev xwm cia ntawm lub roj teeb=kev siv hluav taws xob niaj hnub * tus naj npawb ntawm kev txhawb nqa hauv hnub los nag thiab huab:
135WH * 3days=405WH, thiab tom qab ntawd faib los ntawm qhov voltage ntawm lithium roj teeb kom tau txais lub peev xwm, piv txwv li, peb siv 11.1V lithium roj teeb, lub peev xwm yog 405/11.1≈36AH
Tom ntej no peb yuav xam lub zog ntawm lub hnub ci vaj huam sib luag.
Cov hluav taws xob tsim los ntawm cov hnub ci vaj huam sib luag yuav tsum tau siv los ua cov hluav taws xob uas tau siv nag hmo, thiab tib lub sijhawm, cov hluav taws xob uas yuav siv hmo no yuav tsum tau them tag nrho, uas yog,
Hnub ci vaj huam sib luag tsim hluav taws xob=kev siv hluav taws xob txhua hnub * 2
Lub peev xwm tsim hluav taws xob ntawm lub hnub ci vaj huam sib luag yog xam raws li hauv qab no:
Hnub ci vaj huam sib luag lub zog tsim hluav taws xob=hnub ci vaj huam sib luag fais fab * qhov chaw teeb tsa hnub ci siab tshaj teev * lub zog tsim hluav taws xob
Lub hnub ci vaj huam sib luag fais fab= siv hluav taws xob txhua hnub * 2/(cov sij hawm siab tshaj ntawm hnub ci ntawm qhov chaw teeb tsa * tiam neeg ua haujlwm)
Lub hnub ci siab tshaj plaws ntawm qhov chaw teeb tsa kuj tuaj yeem pom hauv Is Taws Nem, peb yuav siv sijhawm 4 (feem ntau qhov chaw nyob ib puag ncig 4 teev, tshwj tsis yog lwm qhov chaw uas muaj hnub ci tshwj xeeb tuaj yeem ncav cuag 5 teev).
Lub zog tsim hluav taws xob ntawm lub hnub ci yog feem ntau 70-75 feem pua ,
yog li peb muab 75 feem pua.
Hnub ci vaj huam sib luag zog: 135WH * 2 / (4 * 0.75)=90W
