A vehicle cooling/heating system includes a coolant line in which coolant is circulated between a heat source component of a vehicle that provides waste heat and a chiller and a refrigerant line in which refrigerant is circulated through a compressor, a condenser, an expansion valve, and an evaporator. The refrigerant line performs indoor cooling through the evaporator. A controller controls the coolant line such that, during a king mode in which it is necessary to dry the evaporator, the coolant in the coolant line is circulated or not circulated through the heat source component and the chiller; and controls the coolant line such that the refrigerant in the refrigerant line flows in an order of the compressor, the evaporator, and the chiller.

A vehicle air conditioner having a compressor to compress a refrigerant, an air flow passage to supply air to the vehicle; a radiator; an outdoor heat exchanger; a battery temperature adjustment device for letting a heat medium circulate through a battery mounted in the vehicle, thereby adjusting a temperature of the battery; and a control device. The battery temperature adjustment device has a refrigerant-heat medium heat exchanger for performing exchange of heat between the refrigerant and the heat medium. The control device is configured to execute: a radiator and outdoor heat exchanger heating/battery cooling mode, and an obstruct inflow heating/battery cooling mode.

An air-conditioning system for a motor vehicle may include at least two indirect heat exchangers through each of which both water and air is flowable. The water and the air may be fluidically separated from one another such that heat is transferable therebetween. The system may also include a warm water supply, a cold water supply, and at least two temperature-control devices each including a respective indirect heat exchanger of the at least two indirect heat exchangers. The warm and/or cold water supply may be in fluid communication with the at least two indirect heat exchangers. At least one indirect heat exchanger of the at least two indirect heat exchangers may communicate with the warm water supply and the cold water supply via an adjustable and controllable valve device such that a mixing ratio of a mixture of the warm water and the cold water introduced therein is adjustable.

A refrigerant management system in a heat flux management system for an electric vehicle and a method of refrigerant management is provided. The system includes a vehicle air conditioning circuit including a heat pump circuit and a refrigeration cycle refrigerant circuit, the air conditioning circuit including a heat pump condenser in thermal communication with a heat source, a refrigerant evaporator in thermal communication with the heat source, an evaporator associated with an expansion valve, and a refrigerant compressor where the components are fluidly connected to one another by a refrigerant line. An accumulator is fluidly coupled in the refrigerant line downstream of the heat pump condenser, the refrigerant evaporator and evaporator and upstream of the refrigerant compressor, and the air conditioning circuit is switchable between a heating mode and a cooling mode in which the refrigerant circuit is in fluid communication with the compressor by actuation of at least one valve.

A thermal management circuit for a hybrid or electric vehicle is disclosed. The thermal management circuit has a first reversible air conditioning loop in which a refrigerant circulates and includes a two-fluid heat exchanger arranged jointly on a second loop for the circulation of a heat-transfer fluid. The second loop for the circulation of a heat-transfer fluid includes a first circulation branch including in the direction in which the heat-transfer fluid circulates, a first pump, a first radiator arranged in an internal air flow, and a battery heat exchanger. A second circulation branch is connected in parallel with the second radiator and includes a second pump and an electric device for heating the heat-transfer fluid. A third circulation branch connected in parallel with the first pump and the battery heat exchanger includes the two-fluid heat exchanger.

A heat pump system for a vehicle includes a compressor; a four-way valve for transferring refrigerant to external or internal heat exchanger; the external heat exchanger for heat-exchanging between the external air and the refrigerant, the internal heat exchanger for heat-exchanging between the refrigerant and the air supplied to the interior of the vehicle, or for heat-exchanging between the refrigerant and the air supplied to the interior of the vehicle; an electric component cooling circuit which absorbs the heat from electric components in the vehicle, to emit same through electric component radiator, or which absorbs heat, and heat-exchanges with refrigerant/electric component coolant heat exchanger for heat-exchanging between the refrigerant and a coolant; a first expansion means for expanding the refrigerant; and a battery chiller which heat-exchanging between a battery and the refrigerant and transferring the refrigerant to the internal heat exchanger.

This disclosure details integrated thermal management systems for thermally managing electrified vehicle components. Exemplary integrated thermal management systems may include a thermal module assembly that may be integrated into a front end structure of a flexible modular platform of the electrified vehicle. The integrated thermal management systems may be controlled in a plurality of distinct thermal control modes for thermal managing various subcomponents and for addressing various vehicle auxiliary loads (e.g., passenger cabin heating loads, passenger cabin cooling loads, etc.).

A vehicle air-conditioning device is a heat pump type vehicle air-conditioning device including an external heat exchanger that performs heat exchange between refrigerant flowing the inside thereof and outside air. With the vehicle air-conditioning device, a controller functions as a temperature-difference calculation unit that calculates the temperature difference ΔT between the refrigerant in a refrigerant flow path on the exit side of the external heat exchanger and the outside air, and in addition, the controller functions as a frost formation determination unit that determines that frost formation is caused on the external heat exchanger on the basis of the elapsed time to of a state in which the temperature difference ΔT is equal to or larger than a frost-formation temperature difference at which the frost formation may be caused on the external heat exchanger.

A heating, ventilating, and air conditioning (HVAC) system of a vehicle is provided. The system replaces a cooling water circuit having a complex configuration and a separate heat pump system for recovering waste heat of an electric vehicle by changing an air flow path for supplying heating and cooling air and secures an indoor space by disposing an HVAC in an engine room.

Embodiments of the present invention are directed to a method and system for preventing ingestion of ambient air contaminated with possibly harmful, toxic, or flammable battery gases into a passenger compartment of a vehicle in the event of a battery failure. If an abnormal state is detected in a battery pack of the vehicle, the vehicle automatically switches the HVAC system to air recirculation mode, thereby preventing any toxic gas emitted from the battery pack from entering the passenger compartment.