Circuit arrangement for cooling e.g. electrical drive components, of e.g. plug-in hybrid vehicle, has coolant pump, inner space heat exchanger, electrical drive components and low temperature radiator arranged in unbranched cooling circuit

摘要

The arrangement (1) has a coolant pump (2), an inner space heat exchanger (3), an auxiliary heating device (4), electrical drive components (5) and a low temperature radiator (6) arranged in an unbranched cooling circuit (7). The low temperature radiator is brought by a bypass pipe (9). A separately operable engine cooling circuit (11) is thermally coupled into the cooling circuit. A high voltage battery (13) is arranged in the separately operable engine cooling circuit. A separate coolant pump (14) is linked into the unbranched cooling circuit. The auxiliary heating device is formed with ethanol-powered heater. An INDEPENDENT CLAIM is also included for a method for operating a circuit arrangement for cooling drive components of an electrical or a hybrid vehicle.