Abstract: A control system and method for a heating system of an electric vehicle or hybrid vehicle is embodied such that when there is a heating request for a passenger compartment of the vehicle, a heating mode is set in order to heat the passenger compartment by heat from a heating circuit. In a mixed mode, an excess heat in the heating circuit is output to the surroundings, or in an excess mode, the excess heat is retained in the heating system, in order to satisfy a heating request. In the mixed mode, a degree of opening of the heating circuit is set such that only a partial quantity of coolant from the heating circuit is exchanged with a cooling circuit. The mixed mode is activated if the excess heat in the heating circuit exceeds a threshold value which is determined in accordance with an external temperature.

Abstract: A control system for a heating system of an electric or hybrid vehicle with a coolant cooled high voltage store. The control system includes an air conditioning evaporator of a refrigeration circuit of the heating system through which refrigerant circulates to cool the passenger compartment when a cooling requirement for a passenger compartment of the vehicle and for which an air conditioning cooling mode is set. The system further includes a chiller to cool the high voltage store when a cooling requirement for the high voltage store of the vehicle and for which a high voltage store (HVS) cooling mode is set. The control system selects the regulating variable for the compressor from a plurality of different regulating variables based on whether the air conditioning cooling mode is set, whether the HVS cooling mode is set, and/or whether both the air conditioning cooling and HVS cooling modes are set.

Abstract: A control system and method for a heating system of an electric vehicle or hybrid vehicle is embodied such that when there is a heating request for a passenger compartment of the vehicle, a heating mode is set in order to heat the passenger compartment by heat from a heating circuit. In a mixed mode, excess heat in the heating circuit is output to the surroundings via a surroundings cooler in a cooling circuit, or in an excess mode it is retained in the heating system, in order to satisfy a heating request. In the mixed mode, a degree of opening of the heating circuit is set such that only a partial quantity of coolant from the heating circuit is exchanged with the cooling circuit and as a result the excess heat is output to the surroundings. The mixed mode is activated if the excess heat in the heating circuit exceeds a threshold value which is determined in accordance with the external temperature.

Abstract: A control system for a heating system of an electric or hybrid vehicle with a coolant cooled high voltage store. The control system includes an air conditioning evaporator of a refrigeration circuit of the heating system through which refrigerant circulates to cool the passenger compartment when a cooling requirement for a passenger compartment of the vehicle and for which an air conditioning cooling mode is set. The system further includes a chiller to cool the high voltage store when a cooling requirement for the high voltage store of the vehicle and for which a high voltage store (HVS) cooling mode is set. The control system selects the regulating variable for the compressor from a plurality of different regulating variables based on whether the air conditioning cooling mode is set, whether the HVS cooling mode is set, and/or whether both the air conditioning cooling and HVS cooling modes are set.