Abstract: A thermal event suppression system and method can include: a fire extinguishing media case including fire extinguishing media enclosed therein; a conduit fluidly connected to the fire extinguishing media case; a battery pack having a battery pack housing therearound, and the conduit coupling the fire extinguishing media case and the battery pack housing; a valve coupled to the conduit, the valve for controlling the flow of the fire extinguishing media; a metallic filament thermal event detector in direct contact with the valve, the valve configured to open based on a high temperature reading from the metallic filament thermal event detector, and the metallic filament thermal event detector running the whole length of the battery pack; and a nozzle within battery pack housing for dispensing the fire extinguishing media within the battery pack housing.

Abstract: A method of suppressing thermal event for an automotive battery pack having a thermal event suppression apparatus attached to said battery pack; wherein said suppression apparatus has a nozzle that sprays a fire extinguishing media, and having said nozzle extended into a housing of said battery pack; and wherein said suppression apparatus has a thermal event detector to detect a threshold temperature, and said detector triggers a valve to open, allowing said nozzle to spray said media into the housing.