Patent attributes
A battery pack includes a fire extinguishing system. The battery pack includes: a housing; a battery module in the housing and including a plurality of spaced apart battery cells; an agent storage unit storing a fire extinguishing agent and injecting the fire extinguishing agent into the housing when an abnormal temperature is detected; a first perforated plate at a side of an inflow passage of the housing where the fire extinguishing agent flows from the agent storage unit to the housing, including a plurality of first opening holes for passing the fire extinguishing agent and guiding the fire extinguishing agent to a connection passage between the respective battery cells, and uniformly distributing the fire extinguishing agent injected into the connection passage from the inflow passage through the plurality of first opening holes; and a fan discharging the fire extinguishing agent injected into the housing to the outside thereof.
