The system is for an electric vehicle and comprises an electric pump 118, an electric compressor 122 and a cabin chiller. The pump moves fluid around a first loop 114 to selectively cool a part of a drive train of the vehicle before passing through a cabin heater 120 that extracts heat energy from the fluid. The compressor pumps fluid around a second loop 116 through a primary condenser 124 which extracts heat energy from the fluid before returning the fluid to the compressor via a first expansion valve 126 and a primary evaporator 128. The cabin chiller includes a secondary evaporator 132 located in a flow path receiving fluid output from the primary condenser through a second expansion valve 134. The fluid output from the secondary evaporator is drawn back into the second loop by the compressor. The primary evaporator extracts heat from fluid in the first loop. Ideally the part of the drive train cooled by fluid in the first loop comprises at least two of an electric propulsion motor EM, an inverter INV, and an energy store ES. A plurality of parallel valves EV may permit selective cooling of the drive train parts.


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    Title :

    A heating and cooling system for an electric vehicle


    Contributors:

    Publication date :

    2018-05-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    F01P Kühlung von Kraft- und Arbeitsmaschinen oder Kraftmaschinen allgemein , COOLING OF MACHINES OR ENGINES IN GENERAL / B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht



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