Supply of a trolley chain with electricity

A sorting device, comprising a system for supplying a trolley chain with electricity, the system comprising:

• a trolley chain, comprising of at least two trollies coupled with one another, wherein the trolley chain includes a first end trolley and a second end trolley, each of which being directly coupled to only one trolley adjacent to it in the trolley chain, and wherein the trolley chain has a closed loop bus;
• and
• a stationary energy conductor along a track of the trolley chain, wherein the stationary energy conductor comprises of one or more successive segments, which are spaced apart from each other;
• wherein the closed loop bus has several transmission heads, which are designed to supply the closed loop bus with electricity from the stationary energy conductor without contacting the stationary energy conductor, if they are within a pre-determined distance to the stationary energy conductor;
• wherein during a journey of the trolley chain along the track at each moment in time at least one of the transmission heads supplies the closed loop bus with electricity from the stationary energy conductor, and
• wherein the sorting device has at least one loading station and one unloading station to load and/or unload the trollies of a trolley chain.