Battery Module Comprising Module Housing

A battery module, comprising:

• a battery assembly configured to include a plurality of secondary batteries and have a front side, a rear side, an upper side, a lower side, a left side and a right side;
• and
• a module housing including a first frame located at the left side of the battery assembly and having a plate shape with opposing ends bent rightward so that bent portions of the opposing ends of the first frame are respectively located at the upper side and the lower side of the battery assembly to surround at least a portion of each of the upper side and the lower side of the battery assembly, and a second frame located at the right side of the battery assembly and having a plate shape with opposing ends bent leftward so that bent portions of the opposing ends of the second frame are respectively located at the upper side and the lower side of the battery assembly to surround at least a portion of each of the upper side and the lower side of the battery assembly and are coupled with the bent portions of the first frame, respectively.