Abstract: When front and rear air conditioning units perform dehumidification heating operation, and when a battery is to be cooled, a refrigeration cycle circuit performs cooling operation and supplies a liquid-phase refrigerant to front and rear evaporators and a battery cooling heat exchanger. A heating circuit supplies a high temperature liquid heated by an electric heater to front and rear heater cores. Air cooled by the front and rear evaporators is warmed by the front and rear heater cores and supplied to a passenger compartment. A battery cooling liquid cooled by the battery cooling heat exchanger is delivered to the battery and cools the battery.

Abstract: Disclosed is a vehicle air conditioning device including a heat pump cycle configured to compress and expand a refrigerant; a heater core; a high pressure side pressure sensor configured to detect a pressure on the high pressure side of the heat pump cycle; and a heater core inlet water temperature sensor configured to detect a temperature of cooling water at an inlet of the heater core as a heater core inlet water temperature. The heat pump cycle includes a compressor; a condenser; a water refrigerant heat exchanger and an evaporator; and a heating expansion valve and a cooling expansion valve. An estimated outside air temperature is calculated based on the high pressure side pressure detected by the high pressure side pressure sensor and the heater core inlet water temperature detected by the heater core inlet water temperature sensor.

Abstract: A cooling ECU for a vehicle including a high-temperature-side coolant circuit that circulates high-temperature-side coolant by a high-temperature-side water pump, and an airbag ECU that detects collision stops the high-temperature-side water pump when the collision is detected by the airbag ECU and the high-temperature-side coolant is equal to or higher than a first predetermined temperature determined based on the boiling point of the water.

Abstract: A vehicle air conditioner has a refrigeration cycle system including a compressor. The rotational frequency of the compressor is variably controlled, and the compressor is prevented from being operated within a resonating rotational frequency range of the compressor in which the vibration frequency of the compressor and the natural frequency of a steering device resonate with each other. When the vehicle performs automated driving, the compressor is also allowed to operate within the resonating rotational frequency range.

Abstract: In an outside air mode, outside air introduced through an outside air introducing opening is introduced into a ventilation duct. In an inside air mode, inside air introduced through an inside air introducing opening is introduced into the ventilation duct. In an inside and outside air mixture mode, the outside air introduced through the outside air introducing opening and the inside air introduced through the inside air introducing opening are both introduced into the ventilation duct. When the interior of the vehicle is heated in the inside air mode or in the inside and outside air mixture mode, the control unit executes control such that all of the air to be blown out through the blowing opening has passed through the heater core, and sets the temperature of the heating medium in the heating system in accordance with the temperature of the air passing through the evaporator.

Abstract: An air conditioner for a fuel cell electric vehicle includes a heater core configured to circulate a heat medium from a fuel cell stack and perform heating by heat exchange with air, and a control unit configured to calculate a travel resistance when the fuel cell electric vehicle travels on a road based on a road state affecting the travel resistance generated when the fuel cell electric vehicle travels and an environmental state, and control the heat exchange in the heater core based on the calculated travel resistance. When the travel resistance is equal to or greater than a predetermined value, the control unit restricts an operation for the heating using waste heat of the fuel cell stack.

Abstract: A control device supplies regenerative electric power to increase an output of a low-voltage air conditioner when the regenerative electric power is surplus with respect to electric power that is able to be charged to a main battery as compared with a case where the regenerative electric power is not surplus with respect to the electric power that is able to be charged to the main battery. Therefore, it is possible to reduce an output (work load and electric power per unit time) of a high-voltage air conditioner required to maintain comfort of an occupant in a vehicle cabin. Therefore, it is possible to improve electric power consumption rate while maintaining comfort of the occupant in the vehicle cabin.

Abstract: When the temperature of a device that is constituted by an electric component or an electronic component and that is arranged below a rear seat exceeds a predetermined value during air-conditioning operation in an internal-air circulation mode, an air-conditioning switching action by which a rear air-conditioning unit is switched from the internal-air circulation mode to an external-air introduction mode is performed, and thereby ventilation of the vehicle cabin is performed. Therefore, before the surrounding temperature of an occupant significantly rises due to heat generated by the device and the occupant feels uncomfortable, by restraining the surrounding temperature from rising through external-air introduction to avoid a situation in which occupant feels uncomfortable, it is possible to maintain comfortableness in the vehicle cabin.

Abstract: A vehicle power management system includes a battery, an air conditioner driven by power of the battery, an external power supply device that enables external power supply where the power of the battery is supplied to an external electric device, and a determination unit. The determination unit determines whether an operation restriction of an air conditioner is executed during the external power supply. The determination unit determines that the operation restriction is executed when all of following four conditions are satisfied: (A-1) a target blowout temperature is less than a predetermined blowout threshold temperature during cooling; (A-2) an outside air temperature exceeds a predetermined outside air threshold temperature during cooling; (A-3) a refrigerant temperature after heat is exchanged with an air blown into the vehicle cabin exceeds a predetermined refrigerant threshold temperature during cooling; and (A-4) a blower air volume of the air conditioner exceeds a predetermined threshold air volume.

Abstract: A ratio between a flow rate of a refrigerant flowing in an air conditioning heat exchanger of an air conditioner of which a blowout port mode is a face mode and a flow rate of a refrigerant flowing in a battery cooling heat exchanger is determined based on a battery temperature. As a result, depending on the battery temperature, air conditioning can be prioritized over battery cooling, and comfort of an occupant can be ensured. On the other hand, the flow rate of the refrigerant flowing in the battery cooling heat exchanger is larger than the flow rate of the refrigerant flowing in the air conditioning heat exchanger of the air conditioner of which the blowout port mode is a mode other than the face mode. As a result, the battery cooling can be prioritized and deterioration of a battery can be suppressed.

Abstract: A vehicle air conditioner has a refrigeration cycle system including a compressor. The rotational frequency of the compressor is variably controlled, and the compressor is prevented from being operated within a resonating rotational frequency range of the compressor in which the vibration frequency of the compressor and the natural frequency of a steering device resonate with each other. When the vehicle performs automated driving, the compressor is also allowed to operate within the resonating rotational frequency range.

Abstract: A control device is installed in the vehicle that is able to execute a fuel cut that stops fuel supply to an engine in a state in which the engine is rotating. In a case where there is a request for the fuel cut while there is a heating request in which heating of a vehicle cabin is performed using heat of an engine coolant, when a blowout port mode of air conditioning air is set to a defroster mode or a bi-level mode, the control device prohibits the fuel cut.

Abstract: A control device is installed in the vehicle that is able to execute a fuel cut that stops fuel supply to an engine in a state in which the engine is rotating. In a case where there is a request for the fuel cut while there is a heating request in which heating of a vehicle cabin is performed using heat of an engine coolant, when a blowout port mode of air conditioning air is set to a defroster mode or a bi-level mode, the control device prohibits the fuel cut.

Abstract: A frost suppression device for vehicles includes a grill shutter disposed in front of an outdoor heat exchanger for heating the cabin of the vehicle, a shutter control unit for controlling opening and shutting of the grill shutter, and a weather information obtaining unit for obtaining weather information containing change over time in predicted outside air temperature at the current position of the vehicle. The shutter control unit makes a prediction about frost formation to predict whether the outdoor heat exchanger may be frosted, based on the predicted outside air temperature, when the vehicle is first parked. The prediction about frost formation predicts that frost formation on the outdoor heat exchanger may begin at a time when the predicted outside air temperature becomes equal to or below a predetermined temperature. The shutter control unit shuts the grill shutter before a predicted frosting time.

Abstract: A control device supplies regenerative electric power to increase an output of a low-voltage air conditioner when the regenerative electric power is surplus with respect to electric power that is able to be charged to a main battery as compared with a case where the regenerative electric power is not surplus with respect to the electric power that is able to be charged to the main battery. Therefore, it is possible to reduce an output (work load and electric power per unit time) of a high-voltage air conditioner required to maintain comfort of an occupant in a vehicle cabin. Therefore, it is possible to improve electric power consumption rate while maintaining comfort of the occupant in the vehicle cabin.

Abstract: Provided is an air-conditioning device for a vehicle, including: a cooling device configured to cool air passing through a duct; a heater core, which is arranged in the duct on a downstream side of airflow with respect to the cooling device, and is configured to use an engine coolant as a heat source to heat the air; a water valve provided in a coolant circulation system on an upstream side of the heater core; and a controller configured to control those components, in which the controller is configured to decrease an opening amount of the water valve in a predetermined cooling mode. The control is configured to, when the opening amount of the water valve is decreased, decrease a rotational speed of a compressor of the cooling device, and increase a target evaporator temperature of an evaporator of the cooling device, thereby decreasing cooling performance of the cooling device.

Abstract: A vehicle air-conditioning controller includes a battery temperature sensor configured to detect a battery temperature of a battery, a cooling-air temperature sensor configured to detect a temperature of cooling air that has passed an evaporator, and an air-conditioning ECU configured to determine a target ejection temperature of air to be ejected into a vehicle interior from an air conditioner. The air-conditioning ECU is configured to control a cooling device to cool the battery, during air conditioning of the vehicle interior through remote operation external of the vehicle, when the battery temperature is at a predetermined temperature or higher and a state wherein the difference between the target ejection temperature and the cooling-air temperature has been at or below a predetermined value for a predetermined time period.

Abstract: A vehicle air conditioner includes a heat pump system and an air conditioner ECU that controls the heat pump system. An operation mode of the heat pump system includes an air cooling mode, an air heating mode, a serial dehumidification air-heating mode, a parallel dehumidification air-heating mode, a battery-only cooling mode, and an air-cooling battery-cooling mode. The air conditioner ECU separately sets conditions for permitting cooling of a battery, depending on the operation mode.

Abstract: An air conditioner for a fuel cell electric vehicle includes a heater core configured to circulate a heat medium from a fuel cell stack and perform heating by heat exchange with air, and a control unit configured to calculate a travel resistance when the fuel cell electric vehicle travels on a road based on a road state affecting the travel resistance generated when the fuel cell electric vehicle travels and an environmental state, and control the heat exchange in the heater core based on the calculated travel resistance. When the travel resistance is equal to or greater than a predetermined value, the control unit restricts an operation for the heating using waste heat of the fuel cell stack.

Abstract: When an occupant sensor detects no occupant on a rear seat , an output upper limit value or input upper limit value of a battery is increased to set the resulting value as a setting. When the occupant sensor detects an occupant seated on the rear seat, the output upper limit value or input upper limit value of the battery is decreased to set the resulting value as a setting.