Method of arranging an electric accumulating system close to a platform of a vehicle and hybrid propulsion vehicle

1) A method for arranging an accumulating device (15) in proximity of a floor (25) of a vehicle (1) forming a bottom wall of a passenger compartment (20) of the vehicle (1) itself;

• the accumulating device (15) has a heating base wall (33) which is free from heat insulation, and a non-heating base wall (34) which is parallel and opposite to the heating base wall (33) and is provided with a heat-insulating material layer (35);
• and
• the method comprises the step of arranging the accumulating device (15) in a seating (44) obtained in proximity of the floor (25);
• the method is characterized in that it comprises the further steps of:
• implementing the accumulating device (15) with a symmetry allowing the reversal of the accumulating device (15) itself within the seating (44) obtained in proximity of the floor (25) such that the heating base wall (31) may be equally either faced upwards and then towards the passenger compartment (20) or faced downwards and then towards the external environment;
• in the event of cold climate, arranging the accumulating device (15) in proximity of the floor (25), the heating base wall (33) facing upwards and then towards the passenger compartment (20) for transmitting the heat generated by the accumulating device (15) towards the passenger compartment (20) so as to heat the passenger compartment (20) itself;
• or alternatively
• in the event of warm climate, arranging the accumulating device (15) in proximity of the floor (25), the heating base wall (33) facing downwards and then towards the external environment for dissipating the heat generated by the accumulating device (15) towards the external environment so as not to heat the passenger compartment (20).