The invention relates to an energy storage module (100), which is produced by a continuous production method, and which comprises the following: a plurality of energy storage cells (10), electricallyconnected in series, and a housing (20), produced at least in regions and preferably completely from plastic, in which the plurality of energy storage cells (10) is received. A barrier layer is arranged between the housing (20) and the energy storage cells (10) at least in regions, preferably completely. The invention further relates to a production method of such an energy storage module (100), which is produced by means of a continuous production method.