The utility model relates to the technical field of batteries, and discloses a battery module which comprises a
battery cell, a buffer structure and
colloid, the plurality of battery cells are arranged side by side along a first direction, and each
battery cell is provided with two first side surfaces which are oppositely arranged along the first direction; a buffer structure is arranged between two adjacent battery cells, a glue injection groove is formed in the buffer structure, a buffer groove is defined by the buffer structure, and the first side surfaces of the two adjacent battery cells are arranged at intervals through the buffer groove; the
colloid is arranged in the glue injection groove, and the first side faces of the two adjacent battery cells are bonded through the
colloid. According to the utility model, the buffer groove is arranged to provide a buffer space for the expansion of the
battery cell in the circulation process, so that the expansion of the battery
cell in the circulation process can be borne by the buffer groove, and the circulation attenuation caused by overlarge
internal pressure due to overlarge expansion in the later period of the battery
cell circulation is avoided; the glue injection groove is formed in the buffer structure, so that the pouring space of the glue is limited, the glue is prevented from occupying the buffer space, and the structural strength of the battery module is enhanced.