NOVELTY - The system has an air conditioning loop (B) circulating coolant fluid and comprising a compressor (2), an evaporator (28) for cooling air flow to a passenger compartment of a motor vehicle, and a trigger device (26). A branch is dedicated to thermal treatment of an electric battery of the vehicle, and comprises a heat exchanger (48) i.e. condenser, with the battery and an expansion device (24). A pressure regulating device (25) regulates pressure of the cooling fluid leaving the branch with a value identical to pressure of the cooling liquid leaving the evaporator.    USE - Thermal conditioning system for conditioning a cockpit and an electric battery of a motor vehicle i.e. electric vehicle.    ADVANTAGE - The pressure regulating device regulates pressure of the cooling fluid leaving the branch with the value identical to the pressure of the cooling liquid leaving the evaporator so as to obtain pressure value of the cooling liquid circulating in the branch different from the pressure value of the cooling liquid circulating in the air conditioning loop, thus thermally regulating air of the cockpit independent from air or fluid circulating around the battery, and prolonging lifetime of the battery, and hence ensuring a thermal comfort to passengers of the vehicle. The system utilizes an electric heating device that consumes only electrical energy necessary to heat the battery, the air conditioning loop functions as a heat pump with reduced electric energy consumption, thus reducing energy consumption of the battery. The design of the system eliminates electrical connection time, thus reducing time for installation and integration of a module forming device.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for thermal management of a thermal conditioning system.    DESCRIPTION OF DRAWING(S) - The drawing shows a simplified schematic view of a thermal conditioning system.    Air conditioning loop (B)    Compressor (2)    Expansion device (24)    Pressure regulating device (25)    Trigger device (26)    Evaporator (28)    Heat exchanger (48)