The various implementations described herein include methods, devices, and systems for cooling a vehicular electronics system. In one aspect, a vehicular refrigerant system includes: (1) a refrigerant loop having a compressor configured to compress a refrigerant, a condenser configured to condense the compressed refrigerant, an expansion device configured to enable expansion of the condensed refrigerant, and a heat exchanger configured to transfer heat from a liquid coolant to the expanded refrigerant; (2) a liquid coolant loop configured to transfer heat from an electronics system via the liquid coolant; and (3) a controller configured to: (a) obtain operating data regarding the refrigerant, the liquid coolant, and/or the electronics system; and (b) adjust operation of the refrigerant loop and/or the liquid coolant loop based on the obtained operating data.

An air conditioning and battery cooling assembly with an A/C coolant circuit and an E-drivetrain coolant circuit as well as a refrigerant circuit, wherein the A/C coolant circuit and the E-drivetrain coolant circuit are coupled together across a 4/2-way coolant valve in such a way that the A/C coolant circuit and the E-drivetrain coolant circuit can be operated separately or can receive a flow in serial manner.

A method for adjusting compression efficiency for an HVACR system having a variable-frequency drive (VFD) is disclosed. The method includes determining a first compression efficiency, determining an operating point, determining a region of an operating map when a difference between the operating point and a previously determined operating point exceeds a predetermined threshold, adjusting a VFD input to a first input based on the region of the operating map, and controlling the VFD using the first input for a predetermined period of time. The method also includes determining a second compression efficiency and an operation restriction, adjusting the VFD input to a second input based on the operation restriction and a difference between the first compression efficiency and the second compression efficiency, and controlling the VFD using the second input. The method also includes utilizing machine learning control techniques to control several system variables to optimize the compression efficiency.

A refrigerated transport system comprises: an engine. A vapor compression system comprises: a compressor for compressing a flow of a refrigerant; a first heat exchanger along a refrigerant flowpath of the refrigerant; and a second heat exchanger along the refrigerant flowpath of the refrigerant. A heat recovery system has: a first heat exchanger for transferring heat from the engine to a heat recovery fluid along a heat recovery flowpath; and a second heat exchanger along the heat recovery flowpath. The heat recovery system second heat exchanger and the vapor compression system first heat exchanger are respective portions of a shared tube/fin package.

A vehicle-mounted temperature controller includes a first heat circuit having a heat exchanger for a heat generating device and a first heat exchanger; a second heat circuit having a heat medium flow path of an engine and a second heat exchanger; and a refrigeration circuit having the first heat exchanger to make the refrigerant evaporate and the second heat exchanger to make the refrigerant condense. A circulation mode control device control a circulation mode so that the second heat medium raised in temperature by absorbing heat from the refrigerant at the second heat exchanger flows into the flow path, when the engine is stopped and heat is discharged from the heat generating device to the first heat medium in the heat exchanger for the heat generating device and heat is absorbed from the first heat medium to the refrigerant in the first heat exchanger.

An air conditioning system, a vehicle and a method of controlling the vehicle with a vehicle air conditioning system are provided. The vehicle air conditioning system has a refrigeration circuit having a compressor, a condenser, and an evaporator in sequential fluid communication, with a valve assembly and a battery chiller positioned for parallel flow with the evaporator. A cooling circuit in the vehicle has a chiller. A controller is configured to, in response to a temperature of the evaporator being less than a first predetermined value and the compressor operating at a predetermined speed, open the valve assembly to divert a portion of refrigerant through the chiller and away from the evaporator. The refrigerant may be diverted, for example, to raise the temperature of the evaporator and/or prevent cycling of the compressor.

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.

A thermal management method and system in a vehicle include a chiller to cause heat transfer between a coolant loop that defines a path in which a coolant circulates and a refrigerant loop that defines a path in which a refrigerant circulates. The system includes an electronic expansion valve (EXV) in the refrigerant loop to control a flow of the refrigerant into a first part of the chiller, and a coolant pump in the coolant loop to control a flow of the coolant into a second part of the chiller. A controller controls the EXV and the coolant pump based on a target amount for the heat transfer.

A refrigerated transport system (20) comprises: an engine (30). A vapor compression system (50) comprises: a compressor (40) for compressing a flow of a refrigerant; a first heat exchanger (60) along a refrigerant flowpath (52) of the refrigerant; and a second heat exchanger (66) along the refrigerant flowpath of the refrigerant. A heat recovery system (56) has: a first heat exchanger (110) for transferring heat from the engine to a heat recovery fluid along a heat recovery flowpath (58); and a second heat exchanger (112; 63) along the heat recovery flowpath. The heat recovery system second heat exchanger and the vapor compression system first heat exchanger are respective portions of a shared tube/fin package.

A climate control circuit for a transport climate control system is provided. The circuit includes a compressor, a plurality of evaporators, a suction flow control device, and a controller. The suction flow control device is downstream of the plurality of evaporators and directs the working fluid from each of the evaporators to one of a main suction port and an auxiliary port of the compressor. The controller determines whether each of the evaporators is operating in a fresh temperature range or in a frozen temperature range. For each of the evaporators operating in the fresh temperature range, the controller instructs the suction flow control device to direct the working fluid from the corresponding evaporator to the auxiliary suction port. For each of the plurality of evaporators operating in the frozen temperature range, the controller instructs the suction flow control device to direct the working fluid to the main suction port.