A vehicle includes a vapor-injection heat pump having a refrigerant loop with an evaporator configured to cool cabin air, the evaporator coupled to an electronically controllable pressure regulating valve having a fully-open position with near-zero pressure drop, and a cabin conditioning coolant loop having a heater core configured to selectively heat the cabin air. A controller is configured to control the valve to maintain temperature and pressure of the refrigerant loop above a freezing threshold to inhibit or prevent evaporator icing. The valve may be controlled to throttle flow during a parallel dehumidification mode and to fully open to minimize pressure drop during other operational modes, such as a cooling mode, heating mode, de-icing mode, and series dehumidification mode.

The present invention relates to a method for controlling a thermal management device (1) of a motor vehicle comprising a refrigerant-fluid circuit comprising a compressor (3), a first heat exchanger (5), an expansion device (7) and the second heat exchanger (9), said thermal management device (1) further comprising an electric heating device (60), said control method involving, upon a starting of the thermal management device (1) from cold, the following steps: direct or indirect heating of the internal air flow (20) by the electrical heating device (60) alone until said internal air flow (200) reaches a target temperature and/or until a predetermined timer has run out, —when the internal air flow (200) has reached its target temperature and/or when the timer has run out, starting the compressor (3) so that the refrigerant-fluid circuit draws heat energy from the external air flow (100) at the second heat exchanger (9) and gives up said heat energy at the first heat exchanger (5).

A device for determining a temperature of a resistance heating device, the device includes: a temperature sensor configured to detect the temperature of the resistance heating device; and an electronic data processing and/or control device configured to calculate a temperature change of the resistance heating device on a basis of a change in a resistance value of the resistance heating device and a relationship between the resistance value and the temperature of the resistance heating device, the electronic data processing and/or control device configured to validate the temperature of the resistance heating device detected by the temperature sensor, taking into account the calculated temperature change of the resistance heating device.

The invention relates to a method for defrosting an external-air heat exchanger of an electric vehicle. Contrary to the conventional principle of operating systems in an electric vehicle at the lowest possible output power, according to the invention, high output power is used for the defrosting process, to reduce the defrosting time and thus reduce heat loss.

A vehicular heat management system is provided with a heat pump type refrigerant circulation line that cools and heats specific air conditioning regions by generating a hot air or a cold air depending on a flow direction of a refrigerant. The system includes a compressor configured to suck, compress and discharge the refrigerant, a high-pressure side heat exchanger configured to dissipate heat of the refrigerant discharged from the compressor, an outdoor heat exchanger configured to allow the refrigerant to exchange heat with an air outside the vehicle, an expansion valve configured to depressurize the refrigerant flowing out of the high-pressure side heat exchanger or the outdoor heat exchanger, and one or more low-pressure side heat exchangers configured to evaporate the depressurized refrigerant. The outdoor heat exchanger and the low-pressure side heat exchangers are connected in series or in parallel depending on an air conditioning mode.

A trim element includes at least one support layer having an inner face and an outer face and at least one functional layer made from a carbon material extending over at least part of the inner face or over at least part of the outer face of the support layer. At least part of the functional layer defines at least one heating element formed by a pattern that includes at least one conductive area made from carbon material and at least one nonconductive area formed by a through opening in the functional layer, the conductive area being supplied by a current source electrically connected to the conductive area.

This on-board air conditioner control device comprises: a PTC heater which is contained in a high-voltage circuit and generates heat by means of power supplied from a high-voltage battery; a micro-controller which is contained in a low-voltage circuit and controls the power supplied to the PTC heater from the high-voltage battery; a current detection sensor which is contained in the high-voltage circuit and outputs a voltage signal indicating a value for the current flowing through the PTC heater; a V/f conversion unit which is contained in the high-voltage circuit and converts the voltage signal outputted by the current detection sensor to a frequency signal; and a digital isolator which transmits the frequency signal to the micro-controller while preserving electrical insulation between the V/f conversion unit and the micro-controller.

The objective of the present invention is to decrease air temperature reduction along an indoor-side surface of a vehicle opening part caused by heat transfer from outside air. A heating device for a vehicle is provided with a heat generating part (2) which is installed on a vehicle component provided along an edge of a vehicle opening part, and which increases, via heat generation, the temperature of low temperature air along an indoor-side surface of the vehicle opening part caused by heat transfer from outside air. The heat generating part (2) may be disposed along an opening part installed with a vehicle window (52), and the heat generating part (2) may include an electric heater that uses electric power as a heat source.

A control system includes a manual-type air conditioner, and a control device which causes the manual-type air conditioner to execute remote air conditioning in response to a command from outside of a vehicle. The control device starts actuation of the manual-type air conditioner with a maximum temperature as a target blowout temperature of an air-conditioning air and a maximum air quantity as a target air quantity in response to a trigger command of the remote air conditioning, and gradually changes and reduces the target air quantity while gradually changing the target blowout temperature toward a target intermediate temperature with elapse of time. The control device changes the target blowout temperature and the target air quantity respectively to a set blowout temperature and a set air quantity at a time of previous disembarkment, when boarding of a user to the vehicle is detected.

A bus-bar system 100 includes at least one bus-bar terminal 10. Each Bus-bar terminal 10 includes a first portion 10a, a second portion 10b and an intermediate portion 10c. The first portion 10a is connected to a heating element 20 of a heating block 22. The second portion 10b is connected to a Printed Circuit Board (PCB) 30 held within a casing 32 and the intermediate portion 10c connects the first portion 10a to the second portion 10b. The first portion 10a and the second portion 10b are offset from each other and the offset is based on desired position and orientation of the Printed Circuit Board (PCB) 30 held inside the casing 32 with respect to the heating elements 20.