BATTERY MODULE

In order to enhance safety of a battery module, the battery module includes: battery stack (2) including a plurality of batteries (14) that are stacked, each of the plurality of batteries (14) having valve portion (24); duct plate (28) configured to cover a surface of battery stack (2) on which the plurality of valve portions (24) are disposed, duct plate (28) having gas discharge duct (38) that is connected to valve portions (24) of the respective batteries (14), and temporarily stores a blown-off gas; cover plate (60) placed on duct plate (28); and flow path portion (76) defined by duct plate (28) and cover plate (60), flow path portion (76) extending from gas discharge duct (38) in a first direction that intersects with stacking direction (X) and allowing leaking of the gas in gas discharge duct (38) to an outside of battery module (1). Cover plate (60) has opening (96) through which a midst portion of flow path portion (76) is communicable with the outside of the battery module.