Battery power calculation method, how to calculate the power
Back
2022/05/10 17:28:11
Electric quantity refers to the amount of electric energy required by electric equipment, also known as electric energy or power. The unit of electric energy is kilowatt-hour (kW·h), also known as kilowatt-hour, W=P* T.
1. Electric power consumption (degree) = total power consumption (W) * Consumption time (H) /1000.
2, battery power (WH) = battery voltage (V) * battery capacity (AH).
3, battery power (WH) = battery voltage (V) * battery capacity (mAH) /1000.
9*0.8= 7.2W = 0.0072kW, power consumption 0.0072kwh;
9*1= 9W =0.009KW, consumption of 0.009 KWH.
So the total power consumption in 24 hours is (0.0072+0.009) *24=0.388 KWH.
Battery capacity is one of the important performance indicators to measure battery performance. It refers to the amount of electricity released by the battery under certain conditions (discharge rate, temperature, termination voltage, etc.) (jS-150D discharge test can be used), that is, the capacity of the battery, usually in ampere · hour unit (referred to as A·H, 1A· H =3600C).
Battery capacity is divided into actual capacity, theoretical capacity and rated capacity according to different conditions. The calculation formula of battery capacity C is C=∫t0It1dt (the integral of current I from T0 to T1), and the battery is divided into positive and negative terminals.
Expand the data
Common battery
Dry cell
Dry battery is also called manganese-zinc battery, the so-called dry battery is relative to voltaic battery, the so-called manganese-zinc refers to its raw materials. For dry batteries of other materials such as silver oxide batteries, nickel-cadmium batteries. The manganese-zinc battery has a voltage of 15V. Dry cells consume chemicals to produce electricity. Its voltage is not high enough to produce a continuous current of no more than 1 ampere.
Lead battery
The accumulator is one of the most widely used batteries. With a glass tank or plastic tank, filled with sulfuric acid, and then insert two lead plate, one and the charger positive pole connected, one and the charger negative pole connected, after more than ten hours of charging will form a battery. It has two volts between the positive and negative poles. The advantage of batteries is that they can be used many times over. In addition, because it has very little internal resistance, it can provide a large current. Using it to power the car engine, the instantaneous current can reach more than 20 amperes. A battery stores electrical energy when it is charged and converts chemical energy into electrical energy when it is discharged.
The lithium battery
Battery with lithium as the negative electrode. It is a new type of high energy battery developed after the 1960s. According to the different electrolytes used, it can be divided into:
High temperature molten lithium salt battery;
② Organic electrolyte lithium battery;
Inorganic non-aqueous lithium electrolyte battery;
(4) solid electrolyte lithium battery;
(5) Lithium water battery.
The advantages of lithium battery are high voltage, large specific energy, long storage life (up to 10 years), good high and low temperature performance, can be used in -40 ~ 150℃. The disadvantage is that the price is expensive and security is not high. In addition, voltage lag and safety problems need to be improved. Great efforts to develop power batteries and the emergence of new cathode materials, especially the development of lithium iron phosphate materials, will be of great help to the development of lithium electricity.
Previous
