Abstract: A heat exchange plate includes a coolant layer, a refrigerant layer, a first end portion, and a second end portion opposite to the first end portion. The refrigerant layer includes a refrigerant input portion disposed at the first end portion, a refrigerant output portion disposed at the first end portion, a first refrigerant flow path connected to the refrigerant input portion, a second refrigerant flow path connected to the refrigerant output portion, and a connection portion connecting the first and second refrigerant flow paths. The first refrigerant flow path includes a first branch portion, a first converging portion, and a plurality of first branch flow paths connecting the first branch portion and the first converging portion, and the second refrigerant flow path includes a second branch portion, a second converging portion, and a plurality of second branch flow paths connecting the second branch portion and the second converging portion.

Abstract: A battery pack includes a battery module group including a plurality of battery modules, a coolant layer configured to allow a coolant to circulate, and a refrigerant layer configured to allow a refrigerant to circulate. The coolant layer includes a first surface and a second surface opposite to the first surface. The refrigerant layer includes a third surface and a fourth surface opposite to the third surface. The first surface of the coolant layer is closer to the battery module group than the second surface of the coolant layer. The third surface of the refrigerant layer is closer to the battery module group than the fourth surface of the refrigerant layer. The battery module group is arranged along the first surface of the coolant layer. At least part of the coolant layer is arranged between the refrigerant layer and the battery module group in a plan view.

Abstract: A vehicle includes a first heat exchanger plate and a second heat exchanger plate. The first heat exchanger plate includes a first coolant layer in which a coolant flows and a refrigerant layer in which a refrigerant flows, and the second heat exchanger plate includes a second coolant layer in which the coolant flows. The first coolant layer and the second coolant layer are connected to each other via a coolant layer connection passage.

Abstract: A vehicle battery cooling device adapted to cool a battery pack including a plurality of unit batteries includes: a case that contains a cooling fluid for cooling the battery pack; a pipe which runs inside the case and in which a cooling medium for cooling the cooling fluid is caused to flow; and a control valve that is provided in the pipe and discharges the cooling medium in the case in accordance with a temperature of the battery pack.

Abstract: A vehicle battery cooling device adapted to cool a battery pack including a plurality of unit batteries includes: a case that contains a cooling fluid for cooling the battery pack; a pipe which runs inside the case and in which a cooling medium for cooling the cooling fluid is caused to flow; and a control valve that is provided in the pipe and discharges the cooling medium in the case in accordance with a temperature of the battery pack.

Abstract: A vehicle air conditioner includes: a compressor that compresses a refrigerant; a heat exchanger that performs heat exchange between the refrigerant and a heat transporting coolant; a condenser that condenses the refrigerant having a high-temperature and a high-pressure by dissipating heat thereof; an evaporator that performs heat exchange between air sent to a vehicle interior and the refrigerant having a low-temperature and a low-pressure; a refrigerant passage that flows the refrigerant therein; and an on-off valve capable of shutting off the refrigerant passage. A part of the refrigerant passage from the condenser to the compressor in the air-cooling refrigerant circuit is branched into a first passage passing through the evaporator and a second passage passing through the heat exchanger being in parallel to the evaporator. The on-off valve is disposed upstream of the heat exchanger in the second passage.

Abstract: A vehicle air conditioner includes: a compressor that compresses a refrigerant; a heat exchanger that performs heat exchange between the refrigerant and a heat transporting coolant; a condenser that condenses the refrigerant having a high-temperature and a high-pressure by dissipating heat thereof; an evaporator that performs heat exchange between air sent to a vehicle interior and the refrigerant having a low-temperature and a low-pressure; a refrigerant passage that flows the refrigerant therein; and an on-off valve capable of shutting off the refrigerant passage. A part of the refrigerant passage from the condenser to the compressor in the air-cooling refrigerant circuit is branched into a first passage passing through the evaporator and a second passage passing through the heat exchanger being in parallel to the evaporator. The on-off valve is disposed upstream of the heat exchanger in the second passage.

Abstract: A vehicle air conditioner includes: a coolant-path coupled with a cooling-portion of a heat-generating component of a vehicle, for circulating a coolant; and a refrigerant-path for circulating a refrigerant. The conditioner further includes: a first water-refrigerant heat exchanger for vaporizing the refrigerant by thermal-exchange between the coolant and a low-temperature and low-pressure refrigerant; a second water-refrigerant heat exchanger for condensing the refrigerant by a thermal-exchange between the coolant and a high-temperature and high-pressure refrigerant; and a heater core for heating air to be blown into the vehicle's interior. The coolant-path includes: a branching-portion for causing a coolant's flow to branch off; a joining-portion for causing the branched flows to join; and first and second parts that branch off at the branching-portion and join at the joining-portion.

Abstract: A vehicular air-conditioning device includes a first water-refrigerant heat exchanger and a second water-refrigerant heat exchanger. The first water-refrigerant heat exchanger exchanges heat between a refrigerant of low-temperature and low-pressure and a heat transfer coolant to vaporize the refrigerant. The second water-refrigerant heat exchanger exchanges heat between the refrigerant of high-temperature and high-pressure and the coolant to condense the refrigerant. The coolant circulates through one of the first water-refrigerant heat exchanger and the second water-refrigerant heat exchanger, the other of the first water-refrigerant heat exchanger and the second water-refrigerant heat exchanger, a cooling path for cooling a heat generating component of a vehicle, and a heater core for heating air supplied to a vehicle interior in this order.

Abstract: This vehicle air conditioner includes: a component temperature-adjustment path in which a coolant flows for performing a heat exchange with a vehicle component which needs a temperature adjustment; an engine coolant path in which an engine coolant guided from an engine cooling portion flows; a heater core. The vehicle air conditioner further includes: a first water-refrigerant heat exchanger which performs a heat exchange between a low-temperature and low-pressure refrigerant of a heat pump, the coolant fed to the component temperature-adjustment path, and the engine coolant; a second water-refrigerant heat exchanger which performs a heat exchange between a high-temperature and high-pressure refrigerant of the heat pump, and the engine coolant; and a first switch which can switch between a state where the engine coolant flows to the first water-refrigerant heat exchanger and a state where the refrigerant bypasses the first water-refrigerant heat exchanger.

Abstract: An air conditioning device for vehicle includes a first water-refrigerant heat exchanger, a second water-refrigerant heat exchanger, a first bypass passage, and a second bypass passage. The first bypass passage branches at a point of a coolant passage from a cooling portion of a heating component in the vehicle to the second water-refrigerant heat exchanger, and the first bypass passage is capable of being communicated with the coolant passage at an upstream side of the first water-refrigerant heat exchanger. The second bypass passage bran at a point of the coolant passage from a heater core to the first water-refrigerant heat exchanger, and the second bypass passage is capable of being communicated with the coolant passage at a downstream side of the first water-refrigerant heat exchanger. A part of the first bypass passage which includes a downstream end and a part of the second bypass passage which includes an upstream end are shared.

Abstract: The condenser of the heat-exchanging device is provided with a flow passage through which a high-pressure refrigerant flows. The flow passage is structured by openings formed in the plurality of plates. Inside the flow passage, an inner pipe having an outer diameter smaller than the diameter of the openings is disposed. The part inside the flow passage but outside the inner pipe serves as a passage in which the refrigerant that has flown into the condenser flows, and the part inside the inner pipe serves as a passage in which the refrigerant that has passed through the component section flows.

Abstract: This vehicle air conditioner includes a first water-refrigerant heat exchanger, a second water-refrigerant heat exchanger, a heater core, a distributing unit which distributes the coolant, fed from a heat generating component of a vehicle, to a plurality of cooling path, and a junction unit which causes the coolant guided from a plurality of cooling paths to join, and feeds the coolant to the heat generating component. The first water-refrigerant heat exchanger inputs the coolant distributed by the distributing unit, through a first cooling path, and feeds the coolant to be guided to the junction unit, to a second cooling path. The second water-refrigerant heat exchanger inputs the coolant distributed by the distributing unit, through a third cooling path, and feeds the coolant to the heater core. The heater core inputs the coolant fed by the second water-refrigerant heat exchanger, and feeds the coolant to be guided to the junction unit, to a fourth cooling path.

Abstract: An onboard air conditioning device wherein the heating capability of air conditioning is improved, and gas is prevented from flowing into the vehicle interior even in the unlikely event that gas is produced by a battery. In this device, one end of an air flow channel is connected to an air conditioning unit for blowing temperature-regulated air into a vehicle interior, and the other end opens into the vehicle interior. The air flow channel draws air into the vehicle interior from the opening, the intake air is passed through a battery and heated by heat exchange, and the air is then sent to the air conditioning unit. The air conditioning unit sends the air from the air flow channel to a sensible heat exchanger, and after this air undergoes heat exchange with air taken in from another channel, the air is exhausted out of the vehicle interior.

Abstract: A heat pump device is provided with: a first refrigerant guide-in unit that guides in the high temperature, high pressure refrigerant discharged by the compressor from outside the housing; a water refrigerant heat exchanger that can dissipate heat from the high temperature, high pressure refrigerant guided in from the first refrigerant guide-in unit into a cooling fluid; and a housing accommodating the water refrigerant heat exchanger. The heat pump device is further provided with a cooling fluid guide-in unit that can guide the cooling fluid from outside the housing into the water refrigerant heat exchanger, a cooling fluid guide-out unit that can guide the cooling fluid out of the water refrigerant heat exchanger to the outside of the housing, and a first refrigerant guide-out unit that guides the refrigerant that has passed through the water refrigerant heat exchanger to the outside of the housing.

Abstract: An air-conditioning control device is provided with: a pressure acquisition unit, that acquires a detection value from a pressure sensor that detects a pressure of a refrigerant flowing through a heat, exchanger; a temperature acquisition unit that acquires a detection value from, a temperature sensor that detects a temperature of a heating medium flowing through the heat exchanger; and a determination unit that, in the case where a command is issued to cause a refrigerant to flow through an opening and closing portion in a state where the refrigerant is not flowing through, the opening and closing portion, determines whether or not the opening and closing portion is normally opened to cause the refrigerant to flow through the heat, exchanger, by using the pressure of the refrigerant detected by the pressure sensor and the temperature of the heating medium detected by the temperature sensor.

Abstract: A vehicle air conditioner includes: a coolant-path coupled with a cooling-portion of a heat-generating component of a vehicle, for circulating a coolant; and a refrigerant-path for circulating a refrigerant. The conditioner Further includes: a first water-refrigerant heat exchanger for vaporizing the refrigerant by thermal-exchange between the coolant and a low-temperature and low-pressure refrigerant; a second water-refrigerant heat exchanger for condensing the refrigerant by a thermal-exchange between the coolant and a high-temperature and high-pressure refrigerant; and a heater core for heating air to be blown into the vehicle's interior. The coolant-path includes: a branching-portion for causing a coolant's flow to branch off; a joining-portion for causing the branched flows to join; and first and second parts that branch off at the branching-portion and join at the joining-portion.

Abstract: An air conditioning device for a vehicle includes: a water-refrigerant condenser that condenses a refrigerant at a high temperature by heat exchange with a coolant; a water-refrigerant evaporator that evaporates the refrigerant by heat exchange with the coolant; a refrigerant passage switching portion configured to switch a delivery route of the refrigerant in the water-refrigerant condenser between a first refrigerant passage leading to the water-refrigerant evaporator and a second refrigerant passage leading to a cooling evaporator that cools air to be sent into a vehicle interior; and a first water passage that delivers the coolant in the water-refrigerant condenser to a radiator that radiates heat of the coolant to outside air, wherein in a cooling mode, the delivery route of the refrigerant in the water-refrigerant condenser is switched to the first refrigerant passage, and heat transferred from air to the refrigerant by the cooling evaporator is transferred from the refrigerant to the coolant by the wat

Abstract: A heat exchange device has a plate stack unit obtained by continuous stacking of a plurality of plates. This plate stack unit includes a condenser unit, an evaporator unit, and an internal heat exchange unit. The condenser unit is configured such that a passage for allowing a high pressure refrigerant to flow, and a passage for a heat medium for absorbing heat from the high pressure refrigerant are stacked between a set of plates among the plurality of plates. The evaporator unit is configured such that a passage for allowing a low pressure refrigerant to flow, and a passage for a heat medium for applying heat to the low pressure refrigerant are stacked between a set of plates among the plurality of plates. The internal heat exchange unit is configured such that a passage for allowing the high pressure refrigerant to flow, and a passage for allowing the low pressure refrigerant to flow are stacked between a set of plates among the plurality of plates.

Abstract: A heat pump device for a vehicle capable of effectively utilizing the heat of structural members. This heat pump device for a vehicle comprises: an electric compressor for compressing and discharging refrigerant and a high-temperature water-refrigerant heat exchanger for conducting heat exchange between the high-temperature, high-pressure refrigerant discharged by the electric compressor and a first cooling liquid which is antifreeze, the high-temperature water-refrigerant heat exchanger surrounding and being in contact with the electric compressor so as to be capable of heat exchange with the electric compressor.