NOVELTY - The fastening device for a battery module (7) of an electric vehicle, comprises a support structure (2) having supporting parts (4) engaging under the battery module, which is rigidly connected to the support structure. The battery module is positively or non-positively bolted to one of the supporting parts via a fastening element such as a fastening screw (8) that is penetrating the module, where the fastening element is arranged primarily within the battery module. The battery module is arranged in a battery housing (1), where the supporting part is arranged at an outside of the housing.    USE - The fastening device is useful for a battery module of an electric vehicle.    ADVANTAGE - The light-weight fastening device ensures economical and secure and stable fastening of the battery in the vehicle.    DETAILED DESCRIPTION - The fastening device for a battery module (7) of an electric vehicle, comprises a support structure (2) having supporting parts (4) engaging under the battery module, which is rigidly connected to the support structure. The battery module is positively or non-positively bolted to one of the supporting parts via a fastening element such as a fastening screw (8) that is penetrating the module, where the fastening element is arranged primarily within the battery module. The battery module is arranged in a battery housing (1), where the supporting part is arranged at an outside of the housing in a bottom area of the housing. The supporting parts consist of polyamide. The supporting part comprises a threaded bore for receiving the fastening screw, which is guided from the battery module for the supporting part, and is formed by an extruded profile. The threaded bore is formed by a threaded insert arranged within the supporting part. The threaded insert comprises a tool holder arranged on an outer side facing away from the battery module. A sealing unit is arranged between the supporting part and the battery housing and/or between the battery housing and the battery module. The battery housing comprises a rail-like recess or indentation for receiving one of the supporting parts, where the cross section of the recess or indentation is adapted to the profile shape of the support member. The supporting part and/or the recess or indentation has a trapezoidal or wedge-shaped cross-section. The supporting part is screwed on the battery module via a projecting end, where a heat insulating part is arranged between the battery module and the battery housing. An INDEPENDENT CLAIM is included for a battery for an electric vehicle.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic sectional view of a fastening device.    Battery housing (1)    Support structure (2)    Supporting part (4)    Battery module (7)    Fastening screw. (8)