Abstract: A method and apparatus for responding to a fire hazard are disclosed. A method includes monitoring, based on sensing data from a plurality of fire hazard detection sensors configured to detect a fire hazard, a state of a plurality of battery cell sets in a battery system of a data center, detecting, based on the monitoring, a fire hazard state of at least one battery cell set of the plurality of battery cell sets, and controlling, by a controller and based on at least one triggering condition associated with the fire hazard state, a fire hazard response sequence corresponding to the at least one battery cell set. The fire hazard response sequence includes a series of operations comprising a power cut-off operation, an oxygen cut-off operation, and a cooling operation, and the cooling operation includes injecting, by the controller, a coolant in an inner portion of the battery system.