Abstract: A heat pump system for a vehicle is provided to efficiently perform heating of a vehicle interior in a state in which the external temperature is low and heat generated by a heating element is not sufficient in an early stage of driving the vehicle. The heat pump system may include: a compressor; a heat, ventilation, and air condition (HVAC) module; a heat-exchanger; a first expansion valve; an accumulator; a first connection line; a chiller; and a second expansion valve.

Abstract: A method for discharging a battery using a thermal energy system includes: collecting status information according to driving an electric vehicle, and when a brake pedal signal is input, determining whether a battery state of charge (SoC) is greater than a threshold value; when the battery SoC is greater than a threshold value, determining whether a high power part of the thermal energy system is operated; and controlling at least one high power part using a thermal energy system in a forced discharge mode by executing a high-SOC brake compensation (HBC) logic.

Abstract: A valve assembly includes a valve housing including: a bottom housing port, and a first housing port to a third housing port, respectively formed on sides of the valve housing; and a valve body rotatably disposed within the valve housing and including a bottom body port, a side body port fluidly connected to the bottom body port, and a first expansion groove and a second expansion groove formed adjacent to the side body port. In particular, the bottom body port and the bottom housing port are constantly and fluidly connected. Based on rotation of the valve body, the side body port is selectively and fluidly connected to at least one of the first to third housing port, and the side body port is selectively and fluidly connected to one of the first to the third housing port through the first expansion groove or the second expansion groove.

Abstract: A cabin cooling/heating system for a vehicle includes: a heat pump system configured to generate a cold refrigerant and a hot refrigerant; an air conditioning device configured to receive the cold or hot refrigerant from the heat pump system, generate cold or warm air by using the cold or hot refrigerant, and blow the cold or warm air to a front cabin of the vehicle; a floor heat exchanger configured to receive the cold or hot refrigerant from the air conditioning device and cool or heat a cabin floor of a rear cabin of the vehicle by circulating the cold or hot refrigerant; and a line switching valve module configured to send the cold or hot refrigerant to the floor heat exchanger or send the cold or hot refrigerant to the heat pump system.

Abstract: A heat pump system for a vehicle is capable of performing cooling or heating of a vehicle interior by using a natural refrigerant in compliance with environmental regulations, and by efficiently adjusting the temperature of the battery module by using a single chiller where a refrigerant and a coolant heat-exchange each other. The heat pump system is capable of maximizing the cooling and heating performance by operating in the supercritical cycle, in which the pressure and temperature of the refrigerant is higher than a critical pressure and temperature, by applying R744 refrigerant, which is a natural refrigerant utilizing carbon dioxide.

Abstract: A heat pump system for a vehicle, capable of improving cooling and heating performance, includes a gas injection device selectively operable in an air conditioning mode of the vehicle interior to increase the flow rate of the refrigerant. The heat pump system is capable of preventing the performance of cooling the vehicle interior from deteriorating, by preventing the temperature of the refrigerant discharged from the compressor from becoming excessively high, when the external temperature is high, or when a refrigerant having a high critical pressure and critical temperature is applied.

Abstract: A coolant block of an air conditioner includes a block housing, and a first coolant chamber and a second coolant chamber formed in the block housing. The second coolant chamber is disposed adjacent to the first coolant chamber. The coolant block includes a first inflow flow path and a first discharge flow path formed in the block housing and fluidly connected to the first coolant chamber. The coolant block further includes a second inflow flow path and a second discharge flow path formed in the block housing and fluidly connected to the second coolant chamber. The coolant block also includes an expansion valve provided in the block housing and fluidly connected to the first discharge flow path, an expansion flow path formed in the block housing through which a coolant expanded in the expansion valve flows, and a connection flow path formed in the block housing that fluidly connects a compressor and a condenser.

Abstract: A cooling system for a hybrid vehicle may include: a cooling module disposed on a front side of a vehicle and including a cooling fan; an engine cooling apparatus configured to cool an engine and including a first line connected to the cooling module and through which a first coolant flows; an intercooler provided in the engine; and an electrical component cooling apparatus including a water pump and a second line through which a second coolant flows. An electrical component, the cooling module and the water pump are connected through the second line. The cooling system further includes a controller to control the operation of the cooling fan and the water pump, and the intercooler is provided on a branch line connected to the second line to circulate the second coolant and disposed in parallel with the electrical component through the branch line.

Abstract: A heat pump system for a vehicle may improve the cooling and heating performance by cooling or heating a vehicle interior by using a single heat-exchanger, and employing a gas injection device configured to selectively operate in at least one selected mode for air-conditioning of the vehicle interior to increase the flow rate of the refrigerant. The heat pump system includes a compressor, a control valve, a first heat-exchanger, a first expansion valve, a vehicle interior heat-exchanger, a second expansion valve, a second heat-exchanger, a connection line, a chiller, a third expansion valve, and a gas injection device, where a flow rate of the refrigerant is controlled depending on at least one mode for adjusting a temperature of a vehicle interior or for adjusting a temperature of a heating element.

Abstract: A heat pump system for a vehicle is capable of improving cooling and heating performance by applying a gas injection device selectively operating in an air conditioning mode of the vehicle interior to increase the flow rate of the refrigerant. The heat pump system is further capable of reducing the manufacturing cost and reducing the weight by using a single heat-exchanger configured to exchange heat between at least two refrigerants having different temperatures and states with each other for the entire system. By implementing the gas injection device, the total number of the components may be reduced.

Abstract: A heat pump system for a vehicle capable of improving cooling and heating performance by applying a gas injection device selectively operating in an air conditioning mode of the vehicle interior to increase the flow rate of the refrigerant is disclosed. The heat pump system includes a compressor, a condenser, a first expansion valve, an evaporator, a first connection line, a chiller, a second expansion valve, a sub-heat-exchanger, and a gas injection device, wherein, depending on at least one mode for adjusting a temperature of a vehicle interior, the flow rate of the refrigerant is controlled through an operation control of the gas injection device.

Abstract: A heat pump system for a vehicle is provided to improve cooling and heating performance by applying a gas injection device selectively operating in an air conditioning mode of vehicle interior to increase the flow rate of the refrigerant. The heat pump system includes a compressor, an HVAC module, an external heat-exchanger, a first expansion valve, an accumulator, a first connection line, a chiller, a second expansion valve, a gas injection device, and a second connection line, where a flow direction of the refrigerant is controlled depending on at least one mode for a temperature control of a vehicle interior.

Abstract: A heat pump system for a vehicle is capable of performing cooling or heating of a vehicle interior by using a natural refrigerant in compliance with environmental regulations, and by efficiently adjusting the temperature of the battery module by using a single chiller where a refrigerant and a coolant exchange heat with each other.

Abstract: A hydrogen supply system includes a first refrigerant circuit including a first refrigerant line along which refrigerant circulates, and a first heat-exchanger, a first compressor, a second heat-exchanger, and a first expansion valve sequentially disposed on the first refrigerant line. The system further includes a second refrigerant circuit including a second refrigerant line along which the refrigerant circulates, and the second heat-exchanger, a second compressor, a third heat-exchanger, and a second expansion valve sequentially disposed on the second refrigerant line. The system further includes a coolant circuit including a coolant line along which the coolant is selectively heat-exchanged with the refrigerant circulating the first refrigerant circuit and the refrigerant circulating the second refrigerant circuit circulates, and a hydrogen compression tank disposed on the coolant line and configured to store a metal hydride.

Abstract: A heat pump system for a vehicle improves the overall cooling performance and efficiency of a vehicle by heating the vehicle interior by using a high-temperature coolant. Additionally, the heat pump system further employs a separate condenser for subcooling the refrigerant by using the coolant supplied from a dedicated radiator.

Abstract: A heat pump system for a hybrid vehicle is capable of performing the warming up of the engine and the vehicle interior heating while the ambient air temperature is low, improving the fuel efficiency by minimizing the engine operation, and improving the operation efficiency of the system by preventing the pressure drop of the circulating refrigerant. The heat pump system includes a first cooling apparatus, a second cooling apparatus, a vehicle interior heating device, a control valve, a first connection line, a second connection line, and an air conditioner unit, where the second line and the second connection line are respectively connected to the condenser so as to selectively circulate the first coolant and the second coolant.

Abstract: A cooling system is for a hybrid vehicle with an engine and an electrical component. The system includes: a cooling module having a cooling fan: an engine cooling apparatus having a first line connected to the cooling module and the engine and through which a first coolant flows; an intercooler ; an electrical component cooling apparatus having a water pump and a second line connected to the cooling module, the electrical component, and the water pump and through which a second coolant flows; and a controller to control operation of the cooling fan and the water pump. The intercooler circulates the second coolant and is disposed in series with the electrical component. The electrical component cooling apparatus includes a bypass line connected to the second line downstream of the cooling module and to the second line upstream of the intercooler, based on a flow direction of the second coolant.

Abstract: An embodiment heat pump system for a vehicle includes a compressor that compresses a refrigerant, a condenser connected to the compressor through a refrigerant line that condenses the refrigerant by heat-exchanging the refrigerant with a coolant, an evaporator connected to the condenser through the refrigerant line that evaporates the refrigerant, a gas injection device that selectively expands and flows the refrigerant and selectively supplies a portion of the supplied refrigerant to the compressor, a first refrigerant connection line having a first end connected to the refrigerant line and a second end connected to the gas injection device, a chiller that adjusts a temperature of the coolant by heat-exchanging the refrigerant introduced through the first refrigerant connection line with the coolant, and a second refrigerant connection line having a first end connected to the refrigerant line and a second end connected to the gas injection device.

Abstract: An embodiment heat pump system for a vehicle includes a compressor for compressing a refrigerant, a condenser connected to the compressor, a heat exchanger connected to the condenser, a first expansion valve connected to the heat exchanger, an evaporator connected to the first expansion valve, a first refrigerant connection line having ends connected between the compressor and the evaporator and between the heat exchanger and the first expansion valve, a chiller and a second expansion valve on the first refrigerant connection line, and a gas injection device for selectively expanding and flowing the refrigerant supplied from the condenser or the heat exchanger and for selectively supplying a portion of the refrigerant to the compressor to increase a flow rate of the refrigerant, wherein the flow of the refrigerant is controlled according to a mode for controlling a temperature of a vehicle interior or a battery module.

Abstract: A heat pump system for a vehicle includes an air conditioner unit comprising a compressor, a first heat-exchanger, a second heat-exchanger, a first expansion valve, and a third heat-exchanger that are connected through a refrigerant line to circulate a refrigerant through the refrigerant line; and a chiller connected to the refrigerant line through a first connection line, and configured to adjust the temperature of a coolant by heat-exchanging the refrigerant supplied from the air conditioner unit with the coolant. The air conditioner unit includes a first valve provided in the refrigerant line between the first heat-exchanger and the second heat-exchanger; a second valve provided in the refrigerant line between the third heat-exchanger and the compressor; a second expansion valve provided in the first connection line; a second connection line; and a third expansion valve provided in the second connection line.