Electric vehicle with heat carrier circuit esp. for warming up electric drive unit - heats up supplied air flow arriving in vehicle inner space with supply air flow fed by exhaust air flow from vehicle inner space

摘要

The exhaust air flow (4) at least is led over one evaporator (8) of a refrigerant circuit (9) also contg. a condenser (17). The circuit esp. is a compression refrigerant circuit. The condenser (17) is incorporated as a fluid-fluid heat exchanger in the heat carrier circuit (6). The heat carrier circuit (6), downstream of a heating source (12, 14), can be brought in to communication with the refrigerant circuit. A vehicle driving battery (12) or a heat storage (14), and a connectable branch-off (18) to the fluid-fluid heat exchanger (21) incorporated in the refrigerant circuit are provided downstream in the heat carrier circuit (6). ADVANTAGE - Makes more economic use of available heat, than hitherto.