SAFETY SYSTEM FOR VEHICLE PROPULSION BATTERY PACK

Safety system for vehicular propulsion battery pack, the system comprising a device (D) for hydraulic connection of a housing (H) of a battery pack, the device (D) comprising a tubular body (TB) equipped with a fusible septum (FUSE), in such a way that, when a predetermined temperature threshold is exceeded, the septum melts placing the tubular body (TB) in hydraulic communication with an internal compartment (IV) of the housing (H), in which the hydraulic duct is equipped with a first fitting (HI), an external duct (PIP) connected to an external source of extinguishing liquid and/or coolant, wherein the external duct comprises a second fitting (CD) complementary to the first fitting (HI), and wherein said first and second fittings define a hydraulic quick coupling system.