Methods and systems are provided for controlling coolant flow through parallel branches of a coolant circuit including an AC condenser and a charge air cooler. Flow is apportioned responsive to an AC head pressure and a CAC temperature to reduce parasitic losses and improve fuel economy. The flow is apportioned via adjustments to a coolant pump output and a proportioning valve.

A battery temperature control device for a vehicle, which heats the interior of the vehicle and a battery, and an air conditioner for a vehicle having same, the battery temperature control device including: a refrigerant circulation line (R) having a compressor (110), an indoor heat exchanger (130), expansion means (140, 150) and an outdoor heat exchanger (120); a coolant circulation line (W) which circulates a heater core (240) mounted to heat the interior of the vehicle; and a coolant heat exchanger (220) mounted to exchange heat between refrigerant circulating the refrigerant circulation line (R) and coolant circulating the coolant circulation line (W). Battery (210) is arranged on the coolant circulation line (W). The coolant circulation line which can heat the interior of the vehicle and the battery at the same, allowing the battery temperature control device and the air conditioner can heat the vehicle's interior and the battery effectively.

The present invention relates to an air-conditioner system for a vehicle and a method for controlling the same, and more particularly, to an air-conditioner system for a vehicle and a method for controlling the same which can change a target superheat degree depending on variation in an amount of refrigerant discharged from a compressor, namely, gradually decrease the target superheat degree by stages as the amount of refrigerant discharged from the compressor decreases, and control an electronic expansion valve based on the target superheat degree dropping by stages, thereby preventing performance degradation of an air conditioner and stabilizing the system by restraining a change in the superheat degree in an area where an amount of refrigerant discharged from a compressor varies.

An air distribution system for use in a cargo delivery vehicle. The air distribution system includes a compressor, a condenser, a plurality of tubes, an air distribution unit, and a mounting system for mounting the air distribution unit to the roof of the cargo delivery vehicle. The air distribution unit includes a unit body, a vent hood, and a vent plate. The unit body includes a fan and a plurality of tubes. The vent plate includes at least one vent opening.

A cooling system for cooling the battery of an electric vehicle is described including: a primary cooling circuit including a battery and a first heat exchanger, and a pump which circulates a first liquid coolant between the battery and the first heat exchanger; a secondary coolant circuit including an evaporator and a condenser, the evaporator being incorporated into the first heat exchanger, and at least one compressor which circulates a refrigerant fluid between the evaporator and the condenser; and a tertiary cooling circuit including a second heating exchanger and a dry cooler, the condenser being incorporated into the second heat exchanger, and a second pump which circulates a second liquid coolant between the second heat exchanger and the dry cooler.