Electric traction system for vehicles, comprising an electric disipating resistor cooled by a cooling liquid

The chain has an installation permitting to produce electrical energy. An electric power dissipation resistor (8) is electrically connected to an electric line (61) via an electronic interrupter (81) which is controlled by an electric energy management unit (6). The resistor is installed in a cooling circuit (1). A fuel cell (3) e.g. alkaline primary cell, is supplied with pure oxygen.