A battery in a satellite has a typical DoD of 30–40 percent before the batteries are recharged during the satellite day. A new EV battery may only charge to 80 percent and discharge to 30 percent. This bandwidth gradually widens as the battery fades to provide identical driving distances. Avoiding full charges and discharges reduces battery stress.
The charging conditions of the battery: charging rate, temperature, cut-off voltage affect the capacity of the battery, thus determining the discharge capacity. Method of determination of battery capacity: Different industries have different test standards according to the working conditions.
A discharge/charge cycle is commonly understood as the full discharge of a charged battery with subsequent recharge, but this is not always the case. Batteries are seldom fully discharged, and manufacturers often use the 80 percent depth-of-discharge (DoD) formula to rate a battery.
Invention claims a time-consuming method for calibration of a battery based on roundtrip charge/discharge cycles and power/energy measurements, resulting in a map of available discharge energy which is dependent on the discharging power and state-of-energy. This method does not determine one-way charging/discharging efficiencies.
Simulate the battery pulse discharge by changing the battery operating conditions each time after running the calculation for five minutes. In the Run Calculationtask page, make sure that Time Step Sizeis set to 30, set Number of Time Stepsto 10 and click Calculate.
DOD (Depth of Discharge) is the discharge depth, a measure of the discharge degree, which is the percentage of the discharge capacity to the total discharge capacity. The depth of discharge has a great relationship with the life of the battery: the deeper the discharge depth, the shorter the life. The relationship is calculated for SOC = 100% -DOD