Heat flow management device and method for operating a heat flow management device

A heat flow management device for motor vehicles, comprising a refrigerant circulation, a power train coolant circulation and a heating line heat carrier circulation, wherein

• the refrigerant circulation comprises a compressor, an indirect condenser, a first expansion element, an ambient heat exchanger, at least one evaporator with a second expansion element and a chiller with a third expansion element,
• the power train coolant circulation comprises a first coolant pump, the chiller, an electric motor heat exchanger and a power train coolant radiator,
• the heating line heat carrier circulation comprises a second coolant pump, the indirect condenser and a heating heat exchanger,
• wherein the refrigerant circulation and the power train coolant circulation are directly thermally coupled with one another across the chiller,
• wherein the refrigerant circulation and the heating line heat carrier circulation are directly thermally coupled with one another across the indirect condenser,
• and the power train coolant circulation and the heating line heat carrier circulation are only indirectly thermally coupled across the refrigerant circulation,
• wherein in the refrigerant circulation parallel to the indirect condenser a first bypass with a first stop valve is disposed,
• wherein in the refrigerant circulation a second bypass with a second stop valve is disposed parallel to the ambient heat exchanger,
• wherein in the power train coolant circulation a battery cooler is disposed,
• wherein in the power train coolant circulation a fifth bypass is disposed parallel to the battery cooler, and
• wherein a first 3-way valve is disposed downstream of the chiller, and the coolant selectively flows from downstream of the chiller to the electric motor heat exchanger or upstream of the battery cooler through the first 3-way valve.