Methods and system for operating an intake air compressor and a charge-air cooler as heat sources in hybrid vehicles

A vehicle system, comprising:

• an internal combustion engine comprising an intake tract and an exhaust tract;
• at least one electric motor driven by a battery;
• a bypass valve is arranged in the intake tract downstream of a charge-air cooler relative to a direction of coolant flow, and wherein a bypass line branches off from the bypass valve and fluid couples to the intake tract at a junction upstream of an electric compressor
• a first coolant circuit coupled to each of the internal combustion engine, the electric compressor, the electric charge-air compressor arranged in the intake tract, an interior compartment heating device, and a high-temperature radiator;
• a second coolant circuit coupled to each of a charge-air cooler arranged in the intake tract and a low-temperature radiator;
• a third coolant circuit coupled to each of the battery and at least one indirect condenser;
• a first control valve is arranged in the first coolant circuit downstream of the electric compressor in a location between the electric compressor and the interior compartment heating device;
• a second control valve is arranged in the first coolant circuit downstream of the interior compartment heating device in a location between the interior compartment heating device and the internal combustion engine;
• a third control valve is arranged in the first coolant circuit downstream of the internal combustion engine in a location between the internal combustion engine and the high-temperature radiator;
• a fourth control valve is coupled to the first coolant circuit and the third coolant circuit, the fourth control valve is arranged downstream of the second control valve in a location between the second control valve and the electric compressor;
• and
• a fifth control valve arranged in the third coolant circuit upstream of the battery in a location between the fourth control valve and the battery.

A method for a thermal management system for a vehicle comprising an internal combustion engine comprising an intake tract and an exhaust tract, the vehicle further comprising at least one electric motor driven by a battery, the thermal management system further comprising a first coolant circuit coupled to each of the internal combustion engine, an electric compressor, an electric charge-air compressor arranged in the intake tract, an interior compartment heating device, and a high-temperature radiator, a second coolant circuit coupled to each of a charge-air cooler arranged in the intake tract and a low-temperature radiator, and a third coolant circuit coupled to each of the battery and at least one indirect condenser;

• the method comprising:
• heating coolant with only the electric compressor when the internal combustion engine is off;
• and
• flowing the coolant to one or more of the battery, the internal combustion engine, and the interior compartment heating device.