Abstract: A method detects defects in an electrical power storage system including at least one battery. The method includes applying an instruction for charging or discharging the battery. The method also includes measuring the current passing through the battery during application of the instruction and calculating m×n mean errors (eTj(tij))1?j?m, 1?i?n between the measured current and the theoretical current of the instruction in m×n time intervals ([tij, tij+Tj])1?j?m, 1?i?n, respectively. The method also includes calculating, for each j between 1 and m, ej=max(eTj (tij)), where i=1, . . . , n. Lastly, the method includes incrementing a counter Cj if ej completely or partially exceeds a predetermined threshold. A defect is detected if Cj exceeds a predetermined threshold.

Abstract: A method detects defects in an electrical power storage system including at least one battery. The method includes applying an instruction for charging or discharging the battery. The method also includes measuring the current passing through the battery during application of the instruction and calculating m×n mean errors (eTj(tij))1?j?m, 1?i?n between the measured current and the theoretical current of the instruction in m×n time intervals ([tij, tij+Tj])1?j?m, 1?i?n, respectively. The method also includes calculating, for each j between 1 and m, ej=max(eTj (tij)), where i=1, . . . , n. Lastly, the method includes incrementing a counter Cj if ej completely or partially exceeds a predetermined threshold. A defect is detected if Cj exceeds a predetermined threshold.

Abstract: The invention relates to a system for estimating the end-of-charge time of a battery connected to a battery charger on board a motor vehicle. The system is characterised in that it comprises a means (1) for determining the charge status of a battery, a means (6) for determining the charge power of the battery charger and a means (11) for determining an end-of-charge time.

Abstract: A cooling device includes a main cooling circuit capable of adjusting the temperature of a thermal member, a secondary cooling circuit including a first assembly of at least two heat exchangers mounted in parallel, and a thermal coupling between the main cooling circuit and the secondary cooling circuit. The cooling device also includes a temperature sensor mounted in series on the secondary cooling circuit and downstream from the first assembly, and a control unit including an estimator to estimate, with a state monitor, the outlet temperature of each heat exchanger of the first assembly from the inlet temperature of a coolant at the inlet of each heat exchanger of the first assembly and from the values measured by the temperature sensor.