System for replacing a reel of material for the production of electrical energy storage devices and related method

System (1) for replacing a reel (2) of material for the production of electrical energy storage devices, the system (1) comprising:

• a vehicle (7), preferably a self-driving vehicle, for transporting a reel (2) from a storage or receiving station to a change station;
• at least one support shaft or spindle (8) carried by the vehicle (7) and configured to support the reel (2) and to transfer it, at the change station, to a feeding unit (4) of an automatic machine (3) for the production of the electrical energy storage devices;
• and
• a gripping member (11;
• 11′) carried by the vehicle (7) and comprising at least one gripper (12) configured to receive and grip an initial flap (2a) of the reel (2) supported by the support spindle (8) and to keep such initial flap (2a) tensioned along an unwinding path (T) of the same.