Juhised arvutamine võimsus võimsus A aku

A aku see jõuab kaksteist volti aga on vähem kui 20Ah võib mitte olla võime to drive it.

20ah on võimsus of the battery, not the power. Millal praegune on konstantne, suurem the capacity, the longer it can be used for power supply.

tähendus of 20ah on see millal aku väljund vool on 20A, see saab kasutada eest 1 tund, või see saab olla mõistetav kui millal aku väljund praegune on 2A, see saab kasutada eest 10 tundi, jne. toode praegune ja aeg on 20

Millal seade vajab a suure võimsusega aku of 20Ah to drive, it näitab et the the work current of the device is suhteliselt high, and small capacity batteries may not able to to the high current. If a small capacity battery canstand the driving current of the device, it can drive. Just like when you connect a tosin or so No. 7 battery together to drive an electric bicycle, it ei saa olla juhtida.

See on võimsus of the battery, not the power, mis tähendab the time it võtab for a certain power appliance to work. The length of the work time depends the the power of the appliance.

In addition to 100Ah, the battery also needs to know the magnitude of the voltage. This battery can operate for 1 hour at a current of 100 amperes, and the specific power depends on the voltage of the battery. For example, a 12V battery can operate a 1200 watt appliance for one hour if the operating current is 100 amperes, and for 10 hours if the operating current is 10 amperes. It depends on the amount of current used and the working time.

A aku teeb mitte räägib umbes võimsus, aga pigem umbes milliampere tunnid, mis tähendab summa aeg see saab tühjenemine sisse milliampere tunnid, mis on oma elektriline võimsus. pinge of uus tavaline ei. 5 kuiv aku on 1,5V, koos an sisemine takistus umbes 1 oom. Pinge tahe vähenemine ajal tühjenemine tühjenemine 50}0mA, a pinge tilk of 0,5V will be genereeritud, resulting in an output voltage of only 1V. The larger the discharge current, the small the total discharge amount and the shorter the lifetime. Continuous discharge has a shorter life.

Lase me seletada to sina in terms of ühikud: ühik of power, watt (W), is esindatud by P=UI, 1W=1V A (üks vatt võrdus one volt. amper), aku maht mA. h (milliampere tund)

See on ilmne et need kaks osa on erinevad. Edasi otsing seosed: The unit of electric energy and work, joule (J), can be determined by W=Pt: 1J=1W. s=1V A. S (one joule is equal to one volt amper second)

Kui pinge of the aku on teada, korruta the voltage by the battery capacity and see what you get: unit: V.mA.h

In fact, the unit of electrical energy is sisuliselt the same, mis saab muundada into:

1V. mA. h=1V * 10 ^ {-3A * 3600s=3.6V A. S=3.6J

A aku on an energia salvestusruum element, ja on ei mainimine võimsus. see on a hinnatud võimsus, mõõdetud in Wh, vatt tunnid. korrutamine pinge by võimsus saab saada, selline nagu the Redmi 12V12AH aku. See teeb mitte tähendab et see võimsus on 12 * 12=144} vatt! "12V12AH aku" viitab to võimsus of the aku. The rated working voltage of the battery is 12 volts. If the discharge current is 1 amper, it can be used for 12 hours; If the discharge current is 0}.1 A, it can be used for 120%hours; If the discharge current is 0.5 A, it can be used for 24 hours; Wait a minute.

aku ka on üks indikaator, mis on on hinnatud töö vool. üldiselt, do mitte ületada the rated töötav praegune, as aku on a pikem teenus eluiga, muidu see on a lühem eluiga see on lihtne jaoks plaadid sees to peel off due to liigne vool

To connect a 300W lamp, the discharge current of the battery is required to be: I=P/U=300/12=25} amprid. If it does not exceed the rated current of the battery, it can be used; If it exceeds or even exceeds a lot, it cannot be

If possible, the approximate duration is: 12 amper hours/25 amper hours=0.48 hours Considering the loss in the inverter yourself, battery yourself, and circuit, it is shorter than 0.48 hours

1. "MAh" is the unit of battery capacity, and its chin name is milliampere hour (for mugavus when mõõtmine suur maht patareid nagu pliihape patareid, "Ah" is üldiselt kasutatud, ja hiina nimi is amper tund).

1mAh=0.001 amperes * 3600 seconds=3.6 amperes seconds=3.6 Coulombs

2. Coulomb is a ühik elektrienergia, mitte põhi ühik of the International System of Units, but a special unit of the International System of Units. 1 Coulomb=1} amper sekund.

summa elektrienergia transporditud poolt 1A vool sees 1 sekund, st 1C=1A · s.

3. Power calculation formula: P=UI. The unit of P is watt W; In pure resistance circuits, according to Ohm's law, U=IR can be substituted into P=UI to obtain: P=I * IR=(U * U)/R

1, kõige otsene algoritm:

1. Hankige vool elektriline seadmed esimene

2. jaga aku maht by vool of elektriline seade, ja tulemus on kasutatav aeg

For example, a 3000mAH battery with a rated voltage of 5V supplies power to an electrical device with a power consumption of 2.5W and a voltage of 5V. Its theoretical usage time is: I=P/U=>2.5W/5v=>0.5A=>500MA

3000mAh tähendab et 3000MA current can discharge for one hour, and 3000/500=6} hours

2, By using the Coulomb algorithm of charge quantity

C=IS=>3A * 3600s=>10800c Coulomb (laeng) 10800c * 5v=54000w Energy, 54000w/2.5w=21600/3600s=6h