| 摘要 |
The present invention relates to an electrical energy storage unit (1) comprising a plurality of series-connected electrical storage cells (C1, C2, C3) and an inductive balancing circuit (2) for balancing the storage cell voltages, wherein the balancing circuit has a balancing transformer (3) having separate individual windings (Tr1, Tr2, Tr3) for the storage cells as well as in each case an electrical switch (T1, T2, T3) for each storage cell. According to the invention the windings of the balancing transformer are in each case connected to a pole of the respective storage cell by means of at least one inductance (L1, L2, L3) and a switch connected to said inductance, wherein the switch associated with a respective storage cell is connected by means of a diode (D1, D2, D3) to a pole of a respective storage cell disposed upstream or downstream. |
