Battery module

A battery module, comprising:

• a box having an inner cavity;
• at least two battery unit array structures, each of the at least two battery unit array structures comprising a plurality of battery units arranged along a length direction (X);
• and
• at least two support components, each of the at least two support components being fixed to a side of one of the at least two battery unit array structures in a height direction (Z),
• wherein the at least two battery unit array structures are arranged along a width direction (Y) and correspond to the at least two support components in one-to-one correspondence, and
• the at least two battery unit array structures and the at least two support components are disposed in the inner cavity,
• each of the at least two support components has a flat plate structure, and
• the box comprises at least two recessed portions, and each of the at least two support components is disposed in a corresponding one of the at least two recessed portions.