Abstract: The invention relates to a method for operating a climate-control system (12) for a vehicle (10). According to the invention, total energy efficiencies are determined for a group of operating strategies for the air-conditioning system (12) and an operating strategy with the greatest total efficiency that fulfills the heating output requirement (44) that has been determined, is selected.

Abstract: A method for operating a heat pump of a motor vehicle that includes a compressor, an expander, an ambient heat exchanger and a heating heat exchanger. In the method, a defrost mode for defrosting the ambient heat exchanger is initiated. In the defrost mode, a refrigerant is compressed to a high pressure by the compressor to transfer thermal energy to the ambient heat exchanger, the refrigerant is expanded to a low pressure by the expander, and the refrigerant absorbs thermal energy in the heating heat exchanger. Further, a defrosting process of the ambient heat exchanger triggered by the defrost mode is monitored. The monitoring of the defrosting process includes monitoring the pressure difference between the high pressure and the low pressure and/or monitoring the pressure gradient of the pressure difference between the high pressure and the low pressure and/or monitoring the high pressure.

Abstract: In order to provide a method for de-icing a heat exchanger of a motor vehicle, which prevents large amounts of melt water from a defrosting process running onto the floor or the road beneath the motor vehicle, freeze again and pose a risk of injury to pedestrians, in a method for defrosting a heat exchanger of a motor vehicle, in which, for a heat exchanger arranged in a motor vehicle, a defrosting process for removing a layer of frozen water or frost formed on a surface of the heat exchanger is carried out, the defrosting process comprising heating the surface, and melt water being produced, it is proposed that the amount of melt water discharged onto a local region of a floor beneath the motor vehicle is limited to a maximum value.

Abstract: A method for operating a heat pump for a motor vehicle is proposed, wherein the heat pump comprises a refrigerant circuit with a refrigerant, an ambient heat exchanger, a compressor, a heating heat exchanger, and a throttle. The method comprises determining an expected start time of a charging process of a motor vehicle battery and determining a maximum dew point undershoot and/or a maximum frost mass. The method further comprises operating the heat pump such that the maximum dew point undershoot and/or the maximum frost mass are reached within a predefined time period before the expected start time.

Abstract: In order to provide a method for initiating a defrosting process of a heat exchanger of a heat pump of a motor vehicle, which method is insensitive to external influences and can also be used in combination with other methods, wherein the heat exchanger and a coolant heat exchanger of a cooling circuit of the motor vehicle are arranged in a common air path, a coolant outlet temperature of a coolant from the coolant heat exchanger is determined, and a state of icing of the heat exchanger is determined using the coolant outlet temperature, and initiating a defrosting process of the heat exchanger if icing of the heat exchanger is determined.

Abstract: In order to provide a method for initiating a defrosting process of a heat exchanger of a heat pump of a motor vehicle, which method is insensitive to external parameters influencing the air flow through the evaporator, and with which method unnecessary defrosting processes can be avoided, wherein a fan is assigned to the heat exchanger, wherein a power consumption and/or a speed of the fan is monitored, a defrosting process is initiated when the power consumption and/or the speed exceeds and/or falls below a threshold value, and the threshold value is determined as a function of a parameter, wherein the parameter is an indicator of a current relative air speed of the ambient air in relation to the motor vehicle.

Abstract: 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.

Abstract: The invention relates to a method for operating a climate-control system (12) for a vehicle (10). According to the invention, total energy efficiencies are determined for a group of operating strategies for the air-conditioning system (12) and an operating strategy with the greatest total efficiency that fulfills the heating output requirement (44) that has been determined, is selected.

Abstract: In order to provide a method for de-icing a heat exchanger of a motor vehicle, which prevents large amounts of melt water from a defrosting process running onto the floor or the road beneath the motor vehicle, freeze again and pose a risk of injury to pedestrians, in a method for defrosting a heat exchanger of a motor vehicle, in which, for a heat exchanger arranged in a motor vehicle, a defrosting process for removing a layer of frozen water or frost formed on a surface of the heat exchanger is carried out, the defrosting process comprising heating the surface, and melt water being produced, it is proposed that the amount of melt water discharged onto a local region of a floor beneath the motor vehicle is limited to a maximum value.

Abstract: A method for operating a heat pump of a motor vehicle comprising a compressor, an expander, an ambient heat exchanger and a heating heat exchanger. The method comprises initiating a defrost mode for defrosting the ambient heat exchanger, wherein the defrost mode comprises the steps of: Compressing a refrigerant to a high pressure by means of the compressor, transferring thermal energy to the ambient heat exchanger, expanding the refrigerant to a low pressure by means of the expander, and absorbing thermal energy. The method is characterized by monitoring a defrosting process of the ambient heat exchanger triggered by the defrost mode, wherein the monitoring of the defrosting process comprises monitoring a pressure difference between the high pressure and the low pressure and/or monitoring a pressure gradient of the pressure difference between the high pressure and the low pressure and/or monitoring the high pressure.

Abstract: A method for controlling the charging process of an electrical energy storage device, at an electric charging device, wherein the charging device has a temperature control system and the energy storage device has a temperature control system, including at least the following steps: transfer of electrical energy between the charging device and the energy storage device, transfer of thermal energy between a temperature control system of the charging device and the temperature control system of the energy storage device, and transmission of at least one first item of information from a computing unit associated with the charging device to a computing unit associated with the energy storage device, and/or transmission of at least one second item of information from a computing unit associated with the energy storage device to a computing unit associated with the charging device.

Abstract: A method for controlling the charging process of an electrical energy storage device, at an electric charging device, wherein the charging device has a temperature control system and the energy storage device has a temperature control system, including at least the following steps: transfer of electrical energy between the charging device and the energy storage device, transfer of thermal energy between a temperature control system of the charging device and the temperature control system of the energy storage device, obtaining charging progress information, and closed-loop or open-loop control of at least a first temperature of a cooling medium in the temperature control system of the charging device and/or of the energy storage device as a function of the charging progress information.