Electric Vehicle Battery Pack - Flexible Module Design. As the automotive industry goes through developing a new generation of fully electric or hybrid vehicles with a native electric platform, electrification of older generations of ICE cars as a retro modification method might also be appealing to certain costumers, as it is not only more environmentally sustainable in terms of reutilizing the older vehicles and avoiding manufacturing, scrappage and new-car development cost, but it is also a more cost-effective solution for popularizing the electric mobility. The aim of this work is to develop a duct for the convoy of the gases produced by the cells outside the vehicle.