Structure for connecting a plurality of battery modules to constitute a battery pack

摘要

A battery pack is constructed with a plurality of battery modules (1). Each battery module comprises a plurality of prismatic cell cases (3) having short lateral walls and long lateral walls and respectively accommodating elements for electromotive force, these cells being mutually coupled sharing their short lateral walls as partition walls, thereby constituting an integral battery case. Electrode terminals (9) of positive and negative polarities are arranged at longitudinal opposite ends of the integral battery case (2). Projections (19) and indentations (20) for positioning the plurality of battery modules when coupling them together with their long side faces (15) abutted each other to constitute the battery pack are formed substantially in the center of given cell cases positioned symmetrical with respect to the centerline (O) in the lengthwise direction of the battery module.