The present invention is a plurality of cells having a plate-like structure; And a plurality of cell covers having a plate-shaped body made of a plastic material capable of accommodating each cell, and stacked by being fitted to each other in series, and including a plurality of protrusions for forming a vortex on the upper and lower surfaces of the cell cover. Disclosed is a battery module, characterized in that a through portion for air flow is formed on opposite sides of each other, and the protrusions for forming the vortices are displaced from each other in a flow path space between the cell covers fitted to each other. .
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