FIRE PREVENTION DEVICE, BOX ASSEMBLY, BATTERY, ELECTRIC DEVICE, AND METHOD FOR PRODUCING BATTERY

Embodiments of the present application provide a fire-fighting apparatus, a box assembly, a battery, a power consumption apparatus, and a method for preparing a battery, which relates to the technical field of battery safety. The fire-fighting apparatus includes: a pipe, a gas release mechanism, and a blocking structure. The pipe has an air inlet end and an air outlet end, and the air inlet end is configured to be connected to a box of the battery, so that a combustible gas generated when thermal runaway occurs in the battery is capable of entering the pipe from the box via the air inlet end and is discharged from the pipe via the air outlet end; and the gas release mechanism is configured to be connected to the pipe, and the gas release mechanism is configured to release a fire-fighting gas into the pipe when thermal runaway occurs in the battery; where a blocking structure is provided in the pipe, and the blocking structure is configured to block the combustible gas and the fire-fighting gas and change a flow direction, so that the combustible gas and the fire-fighting gas are capable of being mixed before being discharged from the pipe. According to the fire-fighting apparatus provided by the present application, the risk of open flames when thermal runaway occurs in the battery can be reduced, and the spread of the thermal runaway of the battery can be suppressed.