A system for air-conditioning the air in a passenger compartment and for heat transfer by way of components of a power train, in particular an electric powertrain of a motor vehicle. The system exhibits one coolant circuit with two refrigerant-coolant heat exchangers and one coolant-air heat exchanger for heat transfer to the ambient air, as well as one refrigerant circuit with one first refrigerant-air heat exchanger for heating the supply air for the passenger compartment, one second refrigerant-air heat exchanger for heat transfer by way of the ambient air, with one upstream first expansion element, one first flow path with one third refrigerant-air heat exchanger for conditioning the supply air for the passenger compartment, with one upstream second expansion element and one second flow path with one first refrigerant-coolant heat exchanger with one upstream third expansion element.

A method for operating a refrigeration system for a vehicle, the refrigeration system including a refrigerant circuit with a heat pump function. The refrigerant circuit has an exterior heat exchanger, which is operated as a condenser or gas cooler to perform a refrigeration system mode or which is operated as a heat pump evaporator to carry out a heat pump mode. The refrigerant circuit further has an interior heating condenser or heating gas cooler for carrying out a heating mode. The interior heating condenser or heating gas cooler is fluidically connected downstream of the exterior heat exchanger with a reheating expansion device therebetween to carry out a reheating mode. The opening cross-section of the reheating expansion device is controlled in accordance with a refrigeration system parameter indicating the required reheating power.

A thermal system for conditioning the supply air for a passenger compartment and for cooling components of a drive train of a motor vehicle, in particular a thermal management system. The system has a refrigerant circuit with a compressor, a first refrigerant-to-air heat exchanger for transferring heat via ambient air, which is formed to be operable as a condenser/gas cooler and evaporator, a second refrigerant-to-air heat exchanger operated as a first evaporator with an upstream first flow control device as well as a heat exchanger operated as a second evaporator with an upstream second flow control device.

A heat pump system for the vehicle includes a cooling apparatus, which includes a radiator and a water pump connected by a coolant line and circulating a coolant in the coolant line to cool at least one heating element provided on the coolant line. The heat pump system further includes a branched line including one end connected to a valve on the coolant line between the radiator and the heating element and the other end connected to the coolant line between the radiator and the water pump. The heat pump system further includes an air conditioner device circulating a refrigerant along the refrigerant line to adjust an indoor temperature of the vehicle.

A method for managing a thermal management device for a motor vehicle is disclosed. The device has a refrigerant circuit that circulates a refrigerant fluid. The circuit includes a main loop having, in the direction of circulation of the fluid, a compressor, a condenser configured to exchange heat energy with a first element, a first expansion device and a first evaporator configured to exchange heat energy with a second element. The device operates in a mode of strict cooling of the third element in which the condenser transfers heat energy to the first element and only the second evaporator absorbs heat energy from the third element. The method includes managing the open diameter of the first expansion device as a function of the ambient temperature so that the refrigerant fluid circulates inside the first evaporator, the open diameter of the first expansion device decreasing as the ambient temperature of the first element increases.

A thermal management system, the thermal management system having a coolant system, wherein the coolant system includes a battery circuit and a heating/cooling circuit; a second flow channel of a first heat exchanger, a battery heat exchanger, and a first pump form a part of the battery circuit, while a heater, a radiator, and a second pump form a part of the heating/cooling circuit; a first valve device turns on or blocks the battery circuit and the heating/cooling circuit; the coolant system comprises a connection portion, and the connection portion turns on or blocks the battery circuit and the heating/cooling circuit.

A modular cooling system for a vehicle including a base module having a refrigerant compressor, a high-pressure section having a direct or indirect condenser or gas cooler, and a low-pressure section having an evaporator and a chiller having chiller expansion elements connected upstream. The low-pressure section is connected via a heat pump expansion element to the high-pressure section. A first supplementary module has a heating branch having a heat pump heat exchanger, which is connectable via a first reheating branch having a valve element to the direct or indirect condenser or gas cooler, and a heat pump recirculation branch having a blockable valve element for connecting the direct or indirect condenser or gas cooler to the low-pressure section.

The present invention relates to a thermal management system and, more specifically, to a refrigerant system comprising: a compressor, a first heat exchanger, an expansion valve, a second heat exchanger, and an accumulator which are connected in sequence to form a closed loop; and a connection block which connects a heat exchange medium outlet of the expansion valve to a heat exchange medium inlet of the second heat exchanger, and connects a heat exchange medium outlet of the second heat exchanger to a heat exchange medium inlet of the accumulator. Accordingly, the distances between components constituting the refrigerant system for vehicle interior cooling and electric/electronic component cooling are reduced, and thus the refrigerant pressure loss in blocks or pipes connecting the components can be reduced, the system performance can be improved, and the assemblability of the components constituting the refrigerant system can be improved.

The present invention relates to a thermal management system for a vehicle, which can provide various effects, such as a reduction of weight, a cost reduction, and a reduction of a package size due to a reduction in the number of components. The thermal management system for a vehicle, which includes a refrigerant circulation loop circulating refrigerant and exchanging heat between the refrigerant and inside air of an air-conditioning case in order to perform air-conditioning inside the vehicle, includes: a first coolant loop for cooling electric parts of the vehicle; and a second coolant loop for cooling a battery of the vehicle, wherein the first coolant loop and the second coolant loop are configured independently, and coolant flowing in the first coolant loop selectively circulates in the second coolant loop.

An embodiment relates to a heat management device for a vehicle and a heat management method for a vehicle, which use a branch line and a flow control means to use heat generated from a battery module of a vehicle or a heat generated from an electrical component of the vehicle as a heat source for an air conditioning device installed in the vehicle. Therefore, the heat management device for a vehicle and the heat management method for a vehicle may improve heating performance and quality by selectively using waste heat from the electrical component module and the waste heat from the battery depending on the mode.