Battery pack cover having uneven surface structure and battery pack comprising same

A battery pack cover in a form of a square tray to cover an upper portion of a battery pack, the battery pack cover comprising:

• a plate-shaped upper surface portion having irregularities, the irregularities being either recesses or protrusions on one or both sides of the upper surface portion;
• and
• a side portion bent and extended from the upper surface portion, forming a plane perpendicular to the upper surface portion, and covering an upper side surface of the battery pack,
• wherein the irregularities formed on the upper surface portion include an area in which a center line is a straight line, satisfy following conditions 1 to 3:
• [Condition 1]
• in an area where the center line is a straight line, one end of the center line faces one of four sides of the upper surface portion, and an opposite end of the center line faces another side so that an extension of the centerline does not intersect a corner of the upper surface portion;
• [Condition 2]
• the center line of each of two irregularities is a straight line and are connected, and the connected center lines face two opposite sides of the upper surface portion;
• and
• [Condition 3]
• ends of a centerline of an irregularity face two adjacent sides among four sides of the upper surface portion.