NOVELTY - The module (5) has a casing (3) constituted by an adiabatic enclosure and defining a reception compartment (4) for receiving an electric power supply source (1). The compartment is edged by a face (7) of a thermoelectric cell (6) i.e. Peltier cell, for modifying temperature of fluid (9) e.g. air, contained inside the compartment. The compartment houses a fluid circulation device inside the compartment, where the circulation device is constituted by a centrifugal pump and partially housed inside a fluid circulation channel that is provided in the compartment.    USE - Module for controlling temperature of an electric power supply source of a motor vehicle e.g. electric vehicle and hybrid vehicle, for propulsion of the vehicle.    ADVANTAGE - The reception compartment receives the electric power supply source and is edged by the face of the thermoelectric cell for modifying the temperature of the fluid contained inside the compartment, thus permitting the face to re-heat the fluid and another face to cool another fluid based on the polarity of the electric current applied to the cell according to the external climatic conditions, and hence ensuring effective and precise maintenance of the compartment in a desired range of temperatures between 20 to 30 degree Celsius in rolling phase of the vehicle than in the recharging phase of the electric power supply source particularly in stopping phase of the vehicle. The module does not consume electrical energy provoking from the electric power supply source and eliminates the need to implement an engine and a heating, ventilation and air conditioning installation of the vehicle during controlling of temperature. The module is simple and inexpensive with reduced components and encumbrance.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a control module for controlling temperature of an electric power supply source of a motor vehicle.    Electric power supply source (1)    Casing (3)    Reception compartment (4)    Electric power supply source temperature control module (5)    Thermoelectric cell (6)    Face (7)    Fluid (9)