MODULAR ELECTRICAL ENERGY STORAGE SYSTEM STRUCTURE, A METHOD FOR PROVIDING ELECTRICAL ENERGY TO AN ELECTRICAL MOTOR OF A VEHICLE AND A VEHICLE COMPRISING AN ELECTRICAL MOTOR AND THE MODULAR ELECTRICAL ENERGY STORAGE SYSTEM STRUCTURE

A modular electrical Energy Storage System structure for powering an electric motor in a vehicle. The modular ESS structure includes two or more electrical energy storage modules, the modular ESS structure extending in a longitudinal direction, in a transverse direction and in a vertical direction, the longitudinal direction coinciding with a driving direction of the vehicle, the two or more electrical energy storage modules being arranged side-by-side in the transverse direction , in the longitudinal direction and/or in the vertical direction and being connected to each other structurally and electrically. The modular ESS structure comprises a first mounting interface comprising one or more first connecting members configured for mounting to a vehicle structure.