Dab tsi yog Tus Nqi Tshaj Tawm ntawm Cov Khoom Siv Hluav Taws Xob Hauv Chaw Nyob?

 

 

 

 

Nrog rau kev loj hlob sai hauv kev thov raunyob hauv photovoltaic systems thiab lub zog cia, muaj ntau tsev neeg txhim khotsev zog cia roj teebkom txo tau cov nqi hluav taws xob, txhim kho lub zog ntawm tus kheej- kom txaus, thiab txo cov kev pheej hmoo ntawm hluav taws xob. Thaum xaiv lub roj teeb lub zog, ntxiv rau lub roj teeb muaj peev xwm (kWh) thiab lub voj voog lub neej, "kev tawm tus nqi (C- tus nqi)" yog qhov tseem ceeb ntawm kev ntsuas.

 

Tus nqi tso tawm txiav txim siab sai npaum li cas lub roj teeb tuaj yeem tso tawm lub zog khaws cia thiab seb nws puas tuaj yeem ua tau raws li qhov xav tau ntawm lub zog siab ntawm - thauj khoom siv hauv tsev. Piv txwv li,ntawm cov roj teeb nrog tib lub peev xwm 10 kWh, ib qho khoom ntsuas ntawm 1C tuaj yeem muab ob npaug rau qhov tso zis siab tshaj plaws ntawm ib qho ntsuas ntawm 0.5C.

 

 

Basic txhais

 

Tus nqi tso tawm (kev lag luam abbreviation: C-rate) yog ib qho kev ntsuas tseem ceeb rau kev ntsuas qhov ceev ntawm cov roj teeb tawm thiab nws cov zis siab tshaj plaws. Nws sawv cev rau qhov sib piv ntawm qhov tso tawm tam sim no rau lub roj teeb lub peev xwm ntsuas thiab qhia tias "xC." Formula: Discharge Rate (C)=Discharge Current (A) ÷ Battery Rated Capacity (Ah). Kev hloov pauv mus rau lub sijhawm tso tawm: Lub Sijhawm rau kev tso tawm tag nrho (h)=1 ÷ Tus nqi tso tawm.

 

Ib qho piv txwv yooj yim: Xav txog lub roj teeb ua lub thoob dej, qhov twg C- tus nqi sib raug rau cov dej ntws ntawm tus kais dej:

 

● Siab C=High flow rate; ceev tawm thiab siab instantaneous zog tso zis.

 

● Tsawg C=Tsawg ntws tus nqi; Tshem tawm qeeb, txhawb nqa lub zog, thiab ntau dua durability.

 

 

Piv txwv li (Residential 10kWh LFP Energy Storage: 48V, 200Ah)

 

1. 1C tso tawm:Tam sim no=200A, Fais fab ≈ 9.6kW; tag nrho tso tawm 10kWh hauv 1 teev. Haum rau kev khiav ntau lub siab -cov khoom siv hluav taws xob hauv tsev ib txhij (piv txwv li, cua txias, cua sov dej, induction cooktops).

 

2. 0.5C Discharge (Feem ntau rau kev siv hauv tsev):Tam sim no=100A, Fais fab ≈ 4.8kW; tag nrho tso tawm 10kWh hauv 2 teev. Sib npaug zog tso zis, lifespan, thiab nqi; tus qauv configuration rau feem coob ntawm cov vaj tse PV zog cia tshuab.

 

3. 0.2C tso tawm:Tam sim no=40A, Fais fab ≈ 1.92kW; tag nrho tawm hauv 5 teev. Haum rau kev siv hluav taws xob nkaus xwb, lub tub yees, thiab cov khoom siv me me; nta qis zog poob thaum lub sij hawm tso tawm qeeb thiab lub neej ntev tshaj plaws.

 

4. 2C Siab- Tus Nqi Tshaj Tawm:Tso tawm tag nrho hauv ib nrab teev; muab lub zog siab tam sim no tab sis ua kom muaj cua sov tseem ceeb thiab ua kom lub roj teeb degradation sai; tsis tshua muaj siv nyob rau hauv cov chaw nyob.

 

 

Distinction los ntawm "Depth of Discharge" (DoD) (yooj yim tsis meej pem)

 

Ntau tus neeg tsis meej pem tus nqi tso tawm (C- tus nqi) nrog qhov tob ntawm qhov tso tawm, tab sis ob qhov sib txawv kiag li:

 

parameter	Tus nqi xa tawm (C-rate)	Qhov tob ntawm qhov tso tawm (DoD)
lub ntsiab lus	Discharge Rate / tso zis zog	Lub roj teeb hluav taws xob ntau npaum li cas (feem pua) yog siv hauv ib zaug?
chav tsev	0.2C / 0.5C / 1C	80% / 90% / 100%
Piv txwv li	0.5C=tso tawm tag nrho hauv 2 teev	DAt 80% Qhov tob ntawm Kev Tso Tawm (DoD), lub roj teeb 10 kWh siv qhov siab tshaj plaws ntawm 8 kWh.
Kev npam	Maximum load peev xwm thiab instantaneous zog	Roj teeb kev pab lub neej thiab warranty kev pab them nqi

 

 

 

Pros thiab Cons ntawm txawv C-Rates rau Chaw Nyob Zog Cia

 

1) 0.2C–0.3C (Tsawg C- tus nqi)

 

● Pros: Tsawg tshav kub tiam, siab nqi / paug efficiency, qeeb tshaj roj teeb degradation, lub neej voj voog ntev tshaj plaws;

 

● Cons: Tsawg siab tshaj plaws tso zis zog; tsis muaj hwj chim siab -wattage khoom siv hauv tsev;

 

● Tsim nyog rau: Cov kev xav tau hluav taws xob thaum hmo ntuj, lub zog thaub qab rau lub teeb pom kev zoo thiab lub tub yees.

 

 

2) 0.5C (tus qauv tseem ceeb rau kev siv hauv tsev)

 

● Pros: Nruab nrab lub zog tso zis; tuaj yeem siv lub tshuab cua txias thiab cov khoom siv hauv chav ua noj; controllable tshav kub tiam; balanced lifespan; tus nqi zoo tshaj -kev ua tau zoo piv;

 

● Cons: Cov kev txwv ntawm kev txhawb nqa siab - lub zog, puv - kev ua haujlwm thauj khoom;

 

● Tsim nyog rau: PV tus kheej-siv, ncov- hav arbitrage, thiab txhua hnub -lub tsev xav tau hluav taws xob; qhov kev xaiv rau 90% ntawm thaj chaw lub zog cia tshuab.

 

 

3) 1C thiab siab dua (High C- tus nqi)

 

● Pros: High instantaneous zog tso zis; tuaj yeem txhawb nqa txhua qhov siab -wattage loads thaum lub zog hluav taws xob;

 

● Cons: Kev tsim hluav taws xob tseem ceeb vim muaj qhov tam sim no siab; ntev -lub sij hawm siab C- tus nqi siv ua kom muaj peev xwm degradation; cov nqi siab dua rau cov roj teeb thiab cov inverter;

 

● Tsim nyog rau: Cov tsev neeg uas muaj hluav taws xob tsis tu ncua, cov uas muaj ntau lub siab -cov khoom siv hluav taws xob, lossis cov uas xav tau lub zog hluav taws xob ntau rau lub sijhawm luv.

 

 

Yuav Ntsuas Cov Nqi Them Li Cas Thaum Yuav Chaw Nyob Hauv Lub Zog Cia?

 

1. Txheeb xyuas qhov kev qhia tshwj xeeb (XXkW/XXkWh) los xam C- tus nqi ncaj qha. Piv txwv li: Rau 5kW / 10kWh system, tus nqi yog 5 ÷ 10=0.5C; rau 8kW / 10kWh system, nws yog 0.8C (txog 1C siab- pawg fais fab).

 

2. Rau cov qauv siv hluav taws xob hauv tsev niaj hnub: Ua ntej 0.5C qauv;

 

3. Rau cov tsev neeg uas muaj hluav taws xob tsis tu ncua lossis ntau lub siab -cov khoom siv hluav taws xob (central AC, hluav taws xob qhov cub, hluav taws xob cua sov): Xaiv cov qauv uas muaj ntau dua lossis sib npaug ntawm 0.8C lossis 1C qhov ntsuas;

 

4. Rau qhov yooj yim thaub qab fais fab nkaus xwb, tsis tas siv ntau zaus ntawm siab- cov khoom siv fais fab: Xav txog 0.2–0.3C qis- tus qauv ntsuas kom ntev roj teeb lub neej.

 

 

Cov ntaub ntawv tseem ceeb ntxiv

 

1. Rau cov tsev nyob hauv Lithium Iron Phosphate (LFP) lub zog khaws cia, tsis pom zoo kom siab siab - tus nqi tawm ntawm lub zog tag nrho; cov tuam txhab feem ntau suav cov kev pab cuam lub neej raws li cov qauv voj voog ntawm 0.2C-0.5C.

 

2. Nrog rau lub roj teeb muab, cov nqi tso tawm ntau dua ua rau txo qis me ntsis ntawm qhov muaj peev xwm siv tau tiag tiag thiab txo qis dua - tso tawm efficiency.

 

3. Lub inverter lub siab tshaj plaws tso zis hwj chim yuav tsum tsis txhob tshaj lub hwj chim txwv raws li lub roj teeb tus nqi tso tawm tus nqi; txwv tsis pub, kev txwv fais fab lossis kev tiv thaiv kaw yuav tshwm sim.