ENERGY SUPPLY SYSTEM FOR A CONSUMER UNIT AND METHOD FOR SUPPLYING ENERGY TO A CONSUMER UNIT

An energy supply system for a consumer unit with safety-relevant electronic consumers has an energy supply network with a main energy supply source for feeding electrical energy into the energy supply network in the normal operating mode of the energy supply system and an energy detection device for detecting the electrical energy being fed into the energy supply network by the main energy supply source. At least one thermal battery feeds electrical energy into the energy supply network in an emergency operating mode of the energy supply system if the electrical energy being fed into the energy supply network from the main energy supply source is insufficient. A controller switches the energy supply system into the emergency operating mode and activates the at least one thermal battery if the energy which is detected by the first energy detection device undershoots a predetermined threshold value.