Beverage cooling device for preparing cooled beverage when paired with a beverage preparation machine

A beverage cooling device for rapidly cooling a beverage and serving the beverage when cooled, after having been dispensed from a beverage preparation machine in the device, the beverage cooling device comprising:

• a heat exchange container comprising a closed chamber containing a phase-change coolant capable of accumulating and restoring thermal energy and a beverage cavity with an open upper end for receiving the beverage, the closed chamber and cavity being separated by at least one heat conductive inner wall, and the chamber being further closed by an outer wall;
• a control unit comprising a communication module arranged for communicating to the beverage preparation machine information representative of the presence of the device at proximity of the beverage preparation machine and/or of a temperature state of the coolant in the chamber;
• a lid removably arranged for liquid-tightly closing the open upper end of the heat exchange container, a user interface being arranged on the lid;
• a liquid frothing assembly in the lid or in the bottom of the heat exchange container;
• an electrical energy management unit comprising a thermoelectric module arranged in thermal contact with the outer wall of the chamber for generating electric energy to the control unit, as a function of the temperature difference between a first heat conductive wall of the module in contact with the outer wall of the chamber and a second heat conductive wall of the module distant to the first wall, the electrical energy being at least partially used to power the communication module to generate communication signal;
• and
• a heat insulation sheath covering at least partially the outer wall of the heat exchange container,
• wherein the beverage cooling device is arranged to be handled separately from the beverage preparation machine.