Battery pack with fire extinguishing function

The utility model belongs to the technical field of battery packs, and particularly relates to a battery pack with a fire extinguishing function, which comprises a battery unit and further comprises acooling liquid tank filled with cooling liquid, a cooling loop communicated to the cooling liquid tank, a driving device enabling the cooling liquid to flow and a fire extinguishing pipeline communicated with the cooling loop. The fire extinguishing pipeline comprises a spraying pipe which spans the battery unit and is easy to fuse; a control switch is arranged at the joint of the fire extinguishing pipeline and the cooling loop; and the control switch controls one of the cooling liquid tanks to be selectively communicated with the cooling loop and the fire extinguishing pipeline. By adoptingthe technical scheme of the utility model, the spray pipe easy to fuse is additionally arranged on the original cooling loop of the battery pack, so that the spray pipe can be accurately positioned to a thermal runaway batter