METHOD FOR DIAGNOSING FAILURES IN A STATIONARY BATTERY SET

摘要

The invention relates to a method for detecting failures in an electrical energy storage system comprising at least one battery. The method comprises a step of applying a charge or discharge setpoint to the battery. It also comprises a step of measuring the current flowing through the battery during the application of this instruction. It also comprises a step of calculating mxn mean errors (eTj (tji)) 1≤j≤m, 1≤i≤u between the measured current and the theoretical setpoint current in mxn time intervals ([tji, tji + 1≤j ≤m, 1≤i≤u]) ≤ respectively. It also comprises a calculation step, for any j between 1 and m, of ej = max (eTj (tji)). i = 1, ..., n It finally comprises a step of incrementing a counter Cj if ej exceeds, in absolute value or relative share, a predetermined threshold. A failure is detected if Cj exceeds a predetermined threshold. Application: electric or hybrid vehicles