MARINE ENERGY STORAGE UNIT AND A METHOD TO PREVENT THERMAL RUNAWAY IN A MARINE ENERGY STORAGE UNIT

Marine energy storage unit with thermal runaway safety barriers to prevent cell temperature increase, said marine energy storage unit comprises at least one closed module cabinet () with a plurality of stacked battery cells () and an internal cooling system. The internal cooling system comprises an enclosed cabinet cooling circuit () with a water-to-air exchanger () for air cooling of the battery cells (), and the water-to-air exchanger () is connected to a water-to-water heat exchanger () for receipt of water from an external source.