ENERGY ACCUMULATION, ARRANGEMENT COMPRISING THE ENERGY ACCUMULATION AND METHOD FOR DETERMINING AN FUNCTIONAL STATE OF AN ENERGY ACCUMULATION

摘要

The invention relates to an energy accumulator (10) in particular a lithium-based energy accumulator. In order to determine a functional state in the most simple and precise way possible, such as the ageing state, said energy accumulator (10) comprises at least one cell (12) comprising an anode (14), a cathode (16) and an electrolyte (18) which is arranged between the anode (14) and the cathode (16), at least one cell (12) comprises an outlet (20) for discharging functional material from the cell (12) into an analysis unit (22), and the outlet (20) can be connected to the analysis unit (22) in an fludically sealed manner. The invention also relates to an arrangement comprising the energy accumulator and an analysis unit and to a method for determining a functional state of an energy accumulator.