Patent attributes
A charging system for an electric energy storage includes a cable assembly and a plug transition between the cable assembly and the electric energy storage. The cable assembly includes a cable provided with at least two separate power conductors and at least one earth conductor. The power conductors are spaced apart from each other within the cable, with each surrounding at least one tube and including a plurality of intertwisted wires stranded around the tube. The cable assembly also includes at least two separate cooling circuits within the cable, namely a first cooling circuit having a cooling fluid in the tubes surrounded by the power conductors, and a second cooling circuit having a cooling fluid in auxiliary tubes to cool the plug transition. Systems and methods are also provided for charging an electrical energy storage on basis of such a cable assembly.