Battery capacity measuring device and method. and battery control system comprising battery capacity measuring device

A method for measuring battery capacity, the method comprising:

• receiving, by an input interface, capacity factor learning data in a first charging and discharging process performed for a specific time of a learning battery selected as a learning target;
• deriving, by a computing device, a capacity distribution of the from the input capacity factor learning data, wherein the capacity distribution classifies the capacity factor measurement data into a plurality of battery capacity ranges;
• for each battery capacity range of the capacity distribution of the prediction battery derived from the capacity factor learning data, deriving, by the computing device, a respective model-specific capacity prediction result using a different respective machine learning program;
• receiving, by the input interface, capacity factor measurement data measured in a second charging and discharging process performed for a prediction battery selected as a prediction target;
• calculating, by the computing device, capacity prediction data of the prediction battery based on the respective model-specific capacity prediction results of two or more of the different respective machine learning programs;
• and
• outputting, by an output interface, the calculated capacity prediction data,
• wherein the capacity factor learning data includes battery charge capacity and battery discharge capacity which are measured during charging, discharging, and resting of the battery by corresponding to the capacity measurement value for the rated capacity of the learning battery, and may further include one or more of battery charge voltage, battery discharge voltage, battery open circuit voltage (OCV), battery charge current, battery discharge current, battery impedance, and battery temperature, and
• wherein the capacity factor measurement data includes one or more of battery charge voltage, battery discharge voltage, battery open circuit voltage (OCV), battery charge current, battery discharge current, battery charge capacity, battery discharge capacity, battery impedance, and battery temperature which are measured during charging, discharging, and resting of the prediction battery.