A refrigerant charging safety valve assembly for delivering refrigerant to a vehicle's air conditioning system. The refrigerant charging safety valve assembly includes a can tap valve body, a pressure-measuring gauge secured to a first fluid port of the valve body, a hose secured to a second fluid port of the valve body, and a quick connect coupling adapted for connecting the hose to a vehicle A/C system charging port . The pressure measuring gauge is provided for measuring the pressure of the vehicle's air conditioning system when connected to the vehicle's charging port. The refrigerant charging safety valve assembly is specifically adapted to allow or inhibit flow of refrigerant from the pressurized refrigerant container through the refrigerant charging safety valve assembly to the vehicle's charging system.

System, methods, and other embodiments described herein relate to assisting in closing a trunk door of a vehicle by leveraging a Heating, Ventilation and Air-conditioning (HVAC) system in the vehicle. In one embodiment, a method includes detecting a position of the trunk door, and when the position of the trunk door is an open position, determining whether to activate the HVAC system to reduce air pressure in a trunk of the vehicle, where the trunk and the HVAC system are fluidly connected by an air duct. The method includes, in response to determining to activate the HVAC system to reduce air pressure in the trunk, pumping air out of the trunk through the air duct such that at least some of any increased air pressure caused by a trunk door closure is removed from the trunk. The method includes, when the position of the trunk door has changed from the open position to a closed position, deactivating the HVAC system to stop pumping air out from the trunk.

Heat pump type air conditioner for a vehicle in which a noise generated in opening an opening/closing valve (a solenoid valve) during changing of an operation mode is eliminated or reduced. The air conditioner has a dehumidifying and heating mode to let a refrigerant radiate heat in a radiator 4, decompress the refrigerant, and let the refrigerant absorb heat in heat absorber 9 and outdoor heat exchanger 7, and a cooling mode to let the refrigerant radiate heat in the outdoor heat exchanger, decompress the refrigerant, and let the refrigerant absorb heat in the heat absorber. Solenoid valve 21 and solenoid valve 22 opened in the dehumidifying and heating mode. When changing an operation mode from the cooling mode to the dehumidifying and heating mode, a difference between a pressure before each solenoid valve and a pressure after the valve is reduced, and then these valves are opened.

A method of controlling a cooling system includes, by an integrated controller: controller area network (CAN) checking whether CAN communication is abnormal after a vehicle is turned on and control of a cooling fan and an active air flap is initiated; single-communication checking whether communication with a cooling fan controller and an active air flap (AAF) controller is abnormal; performing a first fail-safe operation of communicating with the cooling fan controller and the AAF controller; and controlling the cooling fan and the active air flap based on signals of a first temperature sensor of the cooling fan controller and a second temperature sensor of the AAF controller.

A vehicle-mounted cooling system includes an air-conditioning refrigerant circuit including a refrigerant passage, a compressor, a heat source-side heat exchanger and a use-side heat exchanger, a battery, and a battery cooling unit cooling the battery using the refrigerant. A control device controls a drive state of the compressor in response to an air-conditioning request and a battery cooling request. The control device includes an abnormality determination unit configured to determine whether an abnormality has occurred in the air-conditioning refrigerant circuit, and a control mode change unit configured to perform, under a situation where the battery cooling request has occurred and it is determined that an abnormality has occurred in the air-conditioning refrigerant circuit, a change of a refrigerant-circulation control mode while permitting the battery cooling unit to continuously cool the battery based on the refrigerant, the refrigerant-circulation control mode representing how the refrigerant is circulated in the air-conditioning refrigerant circuit.

A vehicle air conditioning system includes an in-vehicle air conditioner that includes a refrigerant circulation circuit including a compressor and an evaporator; a weather information acquiring section configured to acquire weather information at a current location of a vehicle; an evaporator drying determining section configured to estimate a water retention amount of the evaporator based on the weather information acquired by the weather information acquiring section and an operation state of the in-vehicle air conditioner, and to determine whether the evaporator is in a dry state; and a compressor stop permitting section configured to output a permission signal for permitting stop of the compressor on a condition that the evaporator drying determining section determines that the evaporator is in the dry state.

A method for determining a level of refrigerant charge in a cooling circuit of an air-conditioning system and a module for leak detection are provided. The method includes determining a total quantity of refrigerant contained in the cooling circuit of the air-conditioning system solely based on data internal to the air-conditioning system.

A cooling fan control method for a vehicle is provided. The method includes turning on a starting of the vehicle and sensing a stack temperature. A first required speed of first and second cooling fans required by the stack radiator is set and a temperature of an electrical equipment is sensed to set a second required speed of the first cooling fan. When an air conditioner is operated; an air conditioner pressure is sensed and a second required speed of the second cooling fan required by the condenser is set. The method then compares the required speeds as well as a resonance frequency RPM to determine different setting conditions of the fans. The operation of the fans is complete when the coolant temperature and an air conditioner pressure of the stack and the electrical equipment are within a predetermined setting value.

A semiconductor device includes a chip stack structure including a first semiconductor chip and a second semiconductor chip stacked on the first semiconductor chip. The first semiconductor chip includes a first substrate, a first circuit layer on a front surface of the first substrate, and a first connecting layer disposed on the first circuit layer and including a first metal pad electrically connected to the first circuit layer. The second semiconductor chip includes a second substrate, a second circuit layer on a front surface of the second substrate, and a second connecting layer disposed on the second circuit layer and including a second metal pad electrically connected to the second circuit layer. The first connecting layer faces the second connecting layer. The first and second metal pads are in contact with each other to couple the first and second semiconductor chips to each other.

A heat recovery system for an electric vehicle, including first and second switchable heat sources and a controller operable to selectively switch one of the heat sources into thermal communication with a compressor in a thermodynamic cycling system, the thermodynamic cycling system being in thermal communication with a heat sink; and a detector of a temperature differential between each of the switchable heat sources and a fluid entering the compressor; wherein the controller is operable to switch one of the first and second switchable heat sources into thermal communication with the thermodynamic cycling system when a temperature differential is detected between the fluid entering the compressor in the thermodynamic cycling system and the heat available from the switchable heat source, the temperature differential being such that the compressor is operable to upgrade low grade heat from the switchable heat source to a higher grade heat upon operation of the compressor.