BATTERY MODULE

A battery module may include a cell assembly including a plurality of battery cells stacked on one another, a module case configured to accommodate the cell assembly in an inner space of the module case and including a venting hole formed on the module case, and an inner cover member configured to cover a side surface at an inner side of the module case where the venting hole is formed. In addition, the inner cover member may include an inner rupture portion formed in a part corresponding to the venting hole so that venting gas emitted from the cell assembly is configured to be discharged to the venting hole through the inner rupture portion.