Saft

Saft Groupe Sa

Claude Chanson

Serge Maloizel

Christophe Morin

Antoine Juan

An electrical power supply system is provided comprising a number of rechargeable cells, a number of control electronics circuits and a charger which consists of apparatus for producing electricity from a renewable energy source, the electrochemical cells being divided into separate branches connected in parallel to the charger. Each control electronics circuit controls the charging of one branch by measuring a current being applied to the branch, integrating the current measured in the branch, determining a state of charge of the cell or cells of the branch, comparing the integrated current value with a set value set as a function of the determined state of charge, and interrupting the passage of current being applied to the branch when the integrated current reaches the set value. This system makes it possible to optimize the sharing out of charging current between parallel branches of battery cells while being adaptable as regards the number of cells used in parallel in the system.

Power supply system and method for controlling electrochemical cell charging

A control system for a rechargeable battery including at least two electrochemical generators electrically connected by a power line. The system includes a protection unit and at least two control units respectively connected to the terminals of each electrochemical generator. Each control unit is designed to measure at least one operating parameter pertaining to the generator and to command the protection unit by transmission of carrier currents on the power line. The control system dispenses with the master processor for commanding the battery protection units and reduces the connecting wires by dispensing with the measurement leads designed to transmit the measurements of the operating parameters of each generator to the master processor.

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Jarnac, France

Claude Chanson