Battery box with multi-layer heat dissipation structure

The utility model relates to a battery box with a multi-layer heat dissipation structure, and belongs to the technical field of batteries. The battery box comprises a box body and a box cover, the boxbody and the box cover are connected in a sealed mode to form a containing cavity. Stepped fixing plates are symmetrically arranged on the front side and the rear side of the containing cavity. At least two or more layers of module supports are arranged in the containing cavity. The module support comprises a bottom plate and a partition plate. A battery module unit is arranged between the partition plates; gaps are formed between the left side and the right side of the bottom plate and the box body; starting from the second layer from top to bottom, one side of each layer of module bracket is arranged in a step shape; the module support arranged at the bottommost layer is provided with a first heat dissipation assembly at one side of the step shape; a second heat dissipation assembly isarranged on one side of th