Patent ID: 7800244

Claim:
A switching unit in a management device for managing a power supply to a network of power consumers for a motor vehicle, the management device comprising: a main network (R p ); a secondary network (R s ); a main energy storage element (B p ) intended to supply both the main network (R p ) and the secondary network (R s ); and a secondary energy storage element (U cap ) intended to supply only the secondary network (R s ); the switching unit ( 10 ) electrically connecting the secondary network (R s ) with both the main energy storage element (B p ) and the secondary energy storage element (U cap ) when the vehicle is in a parking mode; the secondary energy storage element (U cap ) being a supercapacitor (U cap ); the switching unit comprising means (K, D 0 , R pre , D 0 , R p ) of precharging the secondary energy storage element (U cap ).