Abstract: A method for estimating the state of health of a battery of an electric or hybrid vehicle in conditions of use, comprises the following steps: a) during the operation of the battery, acquiring a time series of measurements of speed or of acceleration of the vehicle and, simultaneously, at least one time series of measurements of a quantity chosen from: a current or a power delivered by the battery, and a voltage at its terminals; b) extracting segments of the time series corresponding to speed or acceleration patterns that satisfy at least one predefined condition; and c) determining estimations of the state of health of the battery by application of at least one continuous estimation or classification model to the segments of the time series. A device and system for implementing such a method and a method for constructing a continuous estimation or classification model are provided.

Abstract: An automotive vehicle drive unit, comprising a fuel cell whose control input is a setpoint of the electrical power to be delivered by the fuel cell. There is a reversible electrical energy storage system and an electric motor to propel the wheels of a vehicle. An electrical connection element selectively connects the fuel cell and/or the energy storage system to the electric motor. A control circuit stores a model of the consumption of dihydrogen as a function of the power delivered by this fuel cell, in the form of a second-degree polynomial and is configured to compute a coefficient of power distribution ?1 between the fuel cell and the electrical energy storage system pursuant to a defined equation. The control circuit controls the electrical connection element to recharge the energy storage system when the value of the power setpoint Pfc* is greater than the power demanded by the electric motor.