Sodium ion battery with protection device

The invention discloses a sodium ion battery with a protection device, and relates to the technical field of sodium ion batteries. The inner wall of the bottom of the protective shell is fixedly provided with a sodium ion battery main body, the heat dissipation plate is fixedly embedded in the inner wall of the bottom of the protective shell, and the two damping assemblies are arranged at the bottom of the protective shell and are symmetrically distributed, and the heat dissipation structure comprises a main air pipe shaped like a Chinese character'hui ', a fixed box and a refrigeration fan; the concentric-square-shaped main air pipe communicates with the four edges of the protection shell through evenly-distributed auxiliary air pipes. The heat dissipation structure is arranged, so that the heat dissipation performance of the battery is improved, the battery can be effectively protected, the situation that the performance and the service life of the battery are affected due to temperature rise of the battery