METHOD FOR CONTROLLING AN ENERGY STORAGE UNIT IN A VEHICLE MICRO-HYBRID SYSTEM

摘要

The method according to the invention provides control over a supercapacitors-based energy storage unit (12) that forms part of a vehicle microhybrid system (1) able to act as alternator and/or starter, to carry out the automatic stopping-restarting of a vehicle combustion engine (MT) and to provide regenerative braking and torque assistance. The energy storage unit comprises a plurality of supercapacitor cells mounted in series and delivers data (Vmax, Temp, DeltaV) regarding its internal state. The method comprises the steps of comparing a maximum elementary voltage data item (Vmax) against a first voltage threshold; and deciding on limited availability of the functions when the maximum elementary voltage data item reaches the first voltage threshold for a preset period of time.