Battery module

A battery module comprising:

• a casing;
• and
• a plurality of battery cells each having a substantially columnar shape;
• and
• a plurality of support columns each arranged along an axial direction of each of the plurality of battery cells, a length of each of the plurality of support columns in the axial direction being larger than a length of each of the plurality of battery cells in the axial direction, both ends of each of the plurality of support columns in the axial direction being connected to the casing, wherein
• the plurality of battery cells are arranged to be spaced from both surfaces of the casing, the both surfaces of the casing facing each other in the axial direction,
• each of the plurality of support columns includes a cavity and includes, on a lateral surface of the support column, a communication hole allowing the cavity to communicate with an outside of the corresponding support column so that the communication hole faces a corresponding battery cell of the plurality of battery cells, and
• each of the plurality of support columns is arranged between the plurality of the battery cells and is bonded to the corresponding battery cell with an adhesive agent which the cavity is filled with and which flows out to the outside of the corresponding support column through the communication hole.