Abstract: In a device operable for determining a state of charge (SOC) of a battery, an acquisition circuit is configured to acquire state parameters of the battery. A processing circuit is configured to: determine a first SOC of the battery by using an AI model based on the state parameters; determine a second SOC of the battery by using a stored lookup table, where the lookup table stores at least a portion of the state parameters and an SOC of the battery in association with each other; and determine a third SOC of the battery by calculating a weighted average of the first SOC of the battery and the second SOC of the battery based on weights of the first SOC of the battery and the second SOC of the battery, where the third SOC represents the SOC of the battery.

Abstract: A cooling device (10) for personal cooling is provided. The cooling device (10) includes a thermoelectric heat pump (12) having a first side (14) and a second side (16), a fan (18) and a housing (20) having a plurality of openings (22). The thermoelectric heat pump (12) is operable to extract heat from a heat source via the first side (14) and transfer the heat from the first side (14) to the second side (16) on application of an electric current from a power source through the thermoelectric heat pump (12). The fan (18) is operable to dissipate the heat extracted by the thermoelectric heat pump (12). The thermoelectric heat pump (12) and the fan (18) are received in the housing (20).

Abstract: An evaporator in a refrigerant circuit, having a bottom-side inlet chamber which is connected in flow terms to an evaporator outlet side via evaporator tubes, a separator being integrated into the evaporator inlet chamber, in which separator a refrigerant which is expanded in an expansion member is divided as a two-phase liquid/vapour mixture into a vapour phase and into a liquid phase which is separate therefrom, the vapour phase being conducted via a bypass line to the evaporator outlet side, and the liquid phase being conducted counter to the direction of gravity into the evaporator tubes, wherein at least one evaporator tube being a flat tube with a plurality of micro-channels, through which the refrigerant is guided.

Abstract: An evaporator in a refrigerant circuit, having a bottom-side inlet chamber which is connected in flow terms to an evaporator outlet side via evaporator tubes, a separator being integrated into the evaporator inlet chamber, in which separator a refrigerant which is expanded in an expansion member is divided as a two-phase liquid/vapour mixture into a vapour phase and into a liquid phase which is separate therefrom, the vapour phase being conducted via a bypass line to the evaporator outlet side, and the liquid phase being conducted counter to the direction of gravity into the evaporator tubes, wherein at least one evaporator tube being a flat tube with a plurality of micro-channels, through which the refrigerant is guided.