Battery module with improved fire protection performance

Disclosed is a battery module capable of effectively preventing the occurrence or propagation of a fire. The battery module according to one aspect of the present invention comprises: a cell assembly including a plurality of secondary batteries stacked on each other; and a module case having a lower plate, side plates, and an upper plate to form an internal space in which the cell assembly is accommodated, and including a trapping portion formed in at least a portion of an inner surface of each of the side plates to be recessed outward. 公开了一种能够有效地防止火灾发生或蔓延的电池模块。根据本发明一方面的所述电池模块包括：单体组件，所述单体组件包括彼此堆叠的多个二次电池；和模块壳体，所述模块壳体具有下板、侧板和上板以形成内部空间，所述单体组件被容纳在所述内部空间中，并且所述模块壳体包括捕集部，所述捕集部被形成在每一个所述侧板的内表面的至少一部分中以向外成凹形。