A vehicular heat management system includes: a heat pump type refrigerant circulation line including a compressor, a high-pressure side indoor heat exchanger, a heat pump mode variable expansion valve, an outdoor heat exchanger, an air conditioner mode variable expansion valve, and a low-pressure side indoor heat exchanger; a cooling water circulation line configured to circulate cooling water between a radiator and a specific cooling target; and a refrigerant-cooling water chiller configured to allow the refrigerant in the refrigerant circulation line transferred from the outdoor heat exchanger to the low-pressure side indoor heat exchanger to exchange heat with the cooling water in the cooling water circulation line circulated through the specific cooling target.

A refrigeration cycle device includes: a switching valve configured to switch between a battery mode in which refrigerant flows to a battery heat exchanger and a non-battery mode in which the refrigerant bypasses the battery heat exchanger; and a controller controlling a compressor and the switching valve. The controller includes an estimation unit configured to estimate an oil stagnation amount, which is an amount of lubricating oil accumulated in the battery heat exchanger in accordance with execution of the non-battery mode. The controller includes a determination unit configured to determine whether lubricating oil in the battery heat exchanger needs to be recovered on the basis of the oil stagnation amount. The controller includes an execution unit configured to execute an oil recovery mode for recovery of lubricating oil in the battery heat exchanger when the determination unit determines that lubricating oil needs to be recovered.

A temperature control system includes: a first cooling circuit, where a first cooling medium is circulated in the first cooling circuit, and the first cooling circuit is configured to cool a first structural unit; a second cooling circuit, where a second cooling medium is circulated in the second cooling circuit, and the second cooling circuit is configured to cool a second structural unit; and a heat exchanger, separately connected to the first cooling circuit and the second cooling circuit, and configured to perform heat exchange between the first cooling medium and the second cooling medium, where the first cooling circuit includes a bypass branch, and the bypass branch is connected in parallel to the heat exchanger. According to the temperature control system, heat dissipation efficiency for an inverter and an overall heat dissipation capability for a powertrain are improved.

An attachment structure includes expansion valves used in a vehicle, and a housing to which the expansion valves are attached. The housing includes a flow path through which heat medium circulating in a heat pump cycle of an air conditioner of the vehicle flows, and the flow path is opened and closed by the expansion valves.

A control system includes a refrigerant recovery module and at least one of a valve control module and a compressor control module. The refrigerant recovery module is configured to generate a refrigerant recovery signal to initiate a recovery of refrigerant from a first heat exchanger of a thermal system for an electric vehicle, and to stop the refrigerant recovery based on a temperature of refrigerant circulating through the first heat exchanger. The valve control module is configured to open a first valve to allow refrigerant to flow through the first heat exchanger in response to the refrigerant recovery signal. The compressor control module is configured to increase a speed of a compressor disposed upstream from the first heat exchanger in response to the refrigerant recovery signal.

A hybrid power conversion system (60) for an air conditioned transport vehicle (24) including a plurality of refrigeration components (52, 54, 56) for heating and/or cooling a refrigerated volume (40). Also included is a battery (62) storing electrical power to be provided to at least one of the plurality of refrigeration components (52, 54, 56). Further included is at least one supplemental power source (68, 70, 72, 76) providing electrical power to the battery (62) to provide a total available DC power for the refrigeration components (52, 54, 56). Yet further included is a power converter (64) converting the total available DC power to a total AC power, the total AC power provided to at least one of the plurality of refrigeration components (52, 54, 56).

An electrical power module and transport refrigeration system. The electrical power module is used for an apparatus powered by a battery or/and a fuel, has a working mode and includes: a DC buck module configured to step-down a DC at least provided by the battery to a low-voltage output DC for output, or/and a DC boost module configured to step-up a low-voltage input DC provided by the apparatus powered by the fuel to a high-voltage DC for output; and a control module connected to a transport refrigeration unit, and configured to, in the working mode, control the operation of the DC buck module or/and the DC boost module.

A refrigeration cycle device includes a flow path switching unit configured to determine whether an outside-air heat absorption unit is required to be defrosted. The flow path switching unit is further configured to: cause a heat medium to circulate separately between a first circulation circuit configured to cause the heat medium to circulate through a heat source and a second circulation circuit configured to cause the heat medium to circulate between an evaporation unit and the outside-air heat absorption unit, when it is determined that the outside-air heat absorption unit is not required to be defrosted; and switch a flow path of the heat medium to cause the heat medium in the first circulation circuit to circulate through the outside-air heat absorption unit, when it is determined that the outside-air heat absorption unit is required to be defrosted.

A vehicle roof assembly includes a roof that defines an aperture. A heating, ventilation, and air conditioning assembly is selectively disposed within the aperture. The heating, ventilation, and air conditioning assembly includes a housing defining an interior. The housing defines an intake and a vent opening. The intake is defined on a first side of the housing. A fan is disposed within the interior on a second side of the housing. The second side opposes the first side. A duct is disposed within the interior. The duct extends between the first side and the second side of the housing. The duct fluidly couples the intake with the vent opening.

A vehicle control system is provided, in which an engine ECU starts fuel cut control when deceleration is requested, and an air conditioner ECU operates a compressor to accumulate the cold during operation when the fuel cut control is performed by an engine controller, and deactivates the compressor in a case where an evaporator temperature matches or falls below a predetermined value of a compressor deactivation permissible temperature when a condition of terminating the fuel cut control is satisfied. The engine ECU extends the fuel cut control in a case where the compressor is deactivated when the condition of terminating the fuel cut control is satisfied. The air conditioner ECU includes a compressor deactivation permissible temperature changing unit configured to raise the compressor deactivation permissible temperature from the predetermined value when an estimated air conditioning load is low.