Battery Module Cover Member Having Pattern of Protrusions Protruding in Different Directions Formed Thereon, Manufacturing Method Therefor, and Battery Module Including Same

The present invention relates to: a battery module cover member that has a pattern of protrusions protruding in different directions formed thereon, and thus has improved flatness; a battery module case including the cover member; and a battery module including the same. Although manufactured as a thin film, the battery module cover member has excellent mechanical strength and flatness due to the formation of a pattern of protrusions protruding in opposite directions.