have to make a 3d model of cool box in catia software and the model shows that how the peltier

, my final year project is Medical Mobile Electric Cooler/Thermoelectric Organ Cooler.We have to make a 3d model of cool box in catia software and the model shows that how the peltier module/thermoelectric module is attach to the box and working of it how the battery is connected to it and how the cool air is transmitted in the box and the we have to write the theory according to it, And the report should include the working of it according to the selected concept that how the cooling will occur, how the battery will be connected to the circuit and what equipments are connected to each other how peltier/thermoelectric module will connected to the box and general system calculations