Cooling structure for battery modules

A battery pack comprising:

• battery modules comprising battery cells;
• an intake duct configured to allow cooling air to flow to the battery modules;
• and
• a chamber communicating with the intake duct, the chamber being interposed between the battery modules that are adjacent to each other, wherein
• the chamber comprises:
• a body having a box shape, the body comprising openings respectively at both ends in an arrangement direction in which the battery modules are arranged, the body communicating with each of the battery modules;
• sealing members each of which is disposed at a coupling area at which the body and a corresponding one of the battery modules are coupled to each other;
• and
• a reinforcing rib provided in an internal space of the body, the reinforcing rib being coupled to first and second parts of the body that are apart from each other in a height direction of the body, the reinforcing rib extending between the first and second parts of the body,
• wherein the body is supported in a state of being held between the battery modules, and
• wherein the cooling air is sent to the battery modules via the chamber,
• wherein the battery modules and the chamber are contained in a battery case,
• wherein a chamber fixing part is provided under the reinforcing rib, and
• wherein the chamber fixing part comprises a clip configured to be removably inserted into a mounting hole provided in the battery case.