Battery Module

A secondary battery module, comprising:

• a secondary battery having a wide surface and a narrow surface, and a terminal provided protruding from the narrow surface;
• a secondary battery laminate in which a plurality of the secondary batteries are laminated so that the wide surfaces are caused to face each other and the terminals are oriented toward one side;
• and
• a busbar case provided so as to face a side on which the terminals of the secondary battery laminate are provided, wherein:
• the busbar case has a plurality of holes at positions respectively corresponding to the terminals;
• the terminals are inserted into the holes;
• and
• a length M, which is a sum in the laminating direction, of a gap E, which is a gap on an outside in the laminating direction among gaps between the secondary batteries and inner walls of the holes and which are provided on one end of the secondary batteries in the laminating direction, and a gap F, which is a gap on an outside in the laminating direction among gaps between the secondary batteries and inner walls of the holes which are provided on another end of the secondary batteries in the laminating direction, satisfies Formula (1) below:
• M>(A−B)×(N−1) Formula (1)
• wherein A is a length from an end of one side of the terminal of the secondary battery, in a state in which the secondary battery laminate has not been pressed, in the laminating direction, to one side of the terminal of the adjacent secondary battery in the laminating direction, B is a length from an end of one side of the terminal of the secondary battery, in a state in which the secondary battery laminate has been pressed from both sides in the laminating direction, in the laminating direction, to one side of the terminal of the adjacent secondary battery in the laminating direction, and the relation satisfies A>B, where N is the number of the secondary batteries in the laminating direction.