Patent ID: 8775106

Claim:
A computer-implemented method for determining a parameter of at least one accumulator of a battery, the computer implemented method comprising the steps: conducting a series of voltage and current measurements (Un; In) on the terminals of said at least one accumulator; calculating, using a microprocessor, a plurality of values of the parameter depending on the voltage and current measurements (Un; In); determining, using the microprocessor, a value of the parameter as the average of the calculated values of the parameter and an associated standard deviation; determining, using the microprocessor, an absolute uncertainty on the value of the parameter as the product of the standard deviation and of a Student coefficient related to the number of calculated values of the parameter and to a selected probability; determining, using the microprocessor, a relative uncertainty on the value of the parameter, the relative uncertainty corresponding to a ratio between the absolute uncertainty and a value of the parameter determined as the average of the calculated values of the parameter; if the relative uncertainty is less than or equal to a predetermined accuracy threshold, validating the value of the parameter.