Embodiments of the present invention provide a heat recovery system for an electric vehicle (1), comprising first and second switchable heat sources (65, 19) and a control means (20) operable to selectively switch one of the heat sources into thermal communication with a compressor (11) in a thermodynamic cycling system (12), the thermodynamic cycling system being in thermal communication with a heat sink (59, 159); and a detection means (39, 71, T3) operable to detect a temperature differential between each of the switchable heat sources and a fluid entering the compressor; wherein the control means is operable (adapted, arranged) 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 (11) is operable to upgrade low grade heat from the switchable heat source (65, 19) to a higher grade heat upon operation of the compressor (11).

The present disclosure provides a vehicle air-conditioning device in which cooperative work with a power source is appropriate, which is easy to follow when the power source is restarted, and which reduces a driving force of a compressor at the time of restarting the power source. The vehicle air-conditioning device is provided with a refrigeration cycle. The refrigeration cycle has a compressor that is driven by a power source which may stop temporarily. The refrigeration cycle provides a low temperature and/or a high temperature. A high-temperature system and/or a low-temperature system is provided as a thermal buffer. The refrigeration cycle is provided with electric expansion valves which can be fully closed. The vehicle air-conditioning device is also provided with a control device, which fully closes the electric expansion valves when the compressor is temporarily stopped and which controls the electric expansion valves to the previous opening position when the compressor is restarted.

A vehicle air-conditioning device is provided for controlling a vehicle air-conditioning of a vehicle in accordance with a control method. The air-conditioning compressor is stopped for a first time period after a brake pedal transitions from an operated state to a non-operated state when negative pressure inside a vacuum servo is insufficient relative to a predetermined pressure while an air-conditioning compressor is operating, and The air-conditioning compressor is stopped for a second time period after the acceleration pedal has come to be in a non-operated state when an acceleration pedal is operated before the first time period elapses.

A motor-driven vehicle includes an electric motor, a power storage device, a control device, and a refrigerant circuit. The refrigerant circuit has a compressor, an indoor heat exchanger, an expansion valve, and an outdoor heat exchanger. The indoor heat exchanger exchanges heat with the refrigerant compressed by the compressor. The refrigerant which passes through the indoor heat exchanger is decompressed by the expansion valve, and the outdoor heat exchanger exchanges heat with the decompressed refrigerant and allows the refrigerant to return to the compressor. When the remaining capacity of the power storage device is equal to or more than a predetermined value, the control device operates the compressor and decreases a passing-through air volume of a first air guide device that controls a passing-through air volume of the outdoor heat exchanger.

An apparatus for controlling a compressor includes: an operation information detector which detects operation information from various sensors according to an operation of a vehicle; a compressor which compresses a refrigerant for operating an air conditioner; and a controller which performs starting acceleration control of momentarily decreasing an operation rate of the compressor, which uses engine power in an acceleration situation of the vehicle, in which the controller stores a first map, in which a starting acceleration entry condition according to a driving pattern and a heat load of the vehicle is defined in a plurality of levels, sets a starting acceleration entry condition having a final level corresponding to the driving pattern according to a starting acceleration entry frequency of a driver for a predetermined unit time within a limited level range of the first map, and adjusts a starting acceleration control frequency of the compressor.

An interface system for connecting a vehicle and a transport climate control system (TCCS) is disclosed. The interface system includes a two-way communication interface that connects a vehicle electrical system (VES) controller and a TCCS controller. The interface system also includes a power interface that connects a vehicle energy source of the VES to the TCCS and a TCCS energy source of the TCCS to the VES. The two-way communication interface is configured to distribute a TCCS status from the TCCS controller to the VES controller, and is configured to distribute a VES status from the VES controller to the TCCS controller. The power interface is configured to distribute power from the vehicle energy source to the TCCS when a VES instruction is received, and distribute power from the TCCS energy source to the VES when a TCCS instruction is received.

A method of power demand management is provided. The method includes an electrically powered climate control unit (CCU) detecting one or more additional electrically powered CCUs in a vicinity of the electrically powered CCU and the CCU establishing a communication link with the one or more additional electrically powered CCUs. The method includes generating and transmitting a pending power request to demand power from the power source to the CCU. The CCU monitors for one or more additional pending power requests from the one or more additional CCUs and monitors its position within a power request queue for obtaining power from the power source amongst the CCU and the one or more additional CCUs. Also, the method includes the electrically powered CCU demanding power from the power source when its position within the power request queue is high enough to demand power from the power source.

Methods and systems are provided for a vehicle adapted to be operated based on fuel combustion or electric power. In one example, an accessory train of the vehicle, including an air conditioning pump and a power steering pump, may be operated according to a first mode or according to a second mode based on a power system of the vehicle. When in the second mode, the vehicle may be instructed to coordinate operation of the air conditioning pump and the power steering pump.

There is disclosed a transport refrigeration system comprising an electronically governed engine that drives a refrigeration circuit of the system. The engine control unit is configured to operate the engine in a droop mode of operation, in which the engine speed increases with decreasing engine loads from the refrigeration circuit, so as to maximise the cooling capacity of the system at low engine load conditions.

The present subject matter relates to an electric vehicle thermal management system comprising at least one air conditioning system and a battery thermal management system, with a battery, for being used in hot climate region. The system comprising: a refrigerant cycle comprising a compressor, a first condenser, a second condenser; expansion devices, and an evaporator, wherein the compressor being configured to compress refrigerant vapours by increasing temperature and pressure of a refrigerant; and wherein the first condenser and the second condenser being configured to condense high pressure and high temperature of the refrigerant; and a coolant cycle comprising an electric water pump, a battery heat exchanger, the first condenser, and a heater, wherein the electric water pump being configured to pump a coolant into the coolant cycle, the first condenser being configured to heat the coolant using the heat captured from the refrigerant cycle and configured to transfer the heated coolant to the heater.