ELECTRICAL ENERGY STORAGE MODULE HAVING INTEGRATED POWER CONVERSION MEANS, AND ELECTRICAL ENERGY STORE INCORPORATING SAME

The electrical energy storage module (M-In) comprises a plurality of elementary storage cells (C to C). According to the invention, the module comprises at least one cell unit (U-U-) including a plurality of elementary storage cells connected in series (C to C; C to C) and integrated power-switching means (P, S; P, S) dedicated to this cell unit, delivering, between two power output terminals (B, B) of the cell unit, a positive DC voltage, a negative DC voltage, a zero voltage or a high impedance state, depending on a command received by the cell unit.