Exhaust structure, battery pack, and vehicle

A battery pack, comprising:

• a cabinet;
• at least one layer of cell groups, wherein the at least one layer of cell groups is disposed in the cabinet;
• each layer of cell groups comprises at least two sub-cell groups, each sub-cell group comprises a plurality of cells, the plurality of cells in each sub-cell group all extend in a first direction, and the plurality of cells in each sub-cell group are arranged in a second direction;
• and
• an exhaust structure, wherein the exhaust structure is disposed between two adjacent sub-cell groups on a same layer of the at least one layer of cell groups, and the exhaust structure comprises:
• an isolation member configured to isolate the two adjacent sub-cell groups;
• partition members disposed on two ends of the isolation member in the second direction and connected to the isolation member, wherein the isolation member and the partition members are configured to define a plurality of exhaust passages, each of the exhaust passages has opposite first and second openings on the two ends of the isolation member, the partition members seal the first and second openings, and each of the sub-cell groups on two sides of the isolation member corresponds to at least one of the exhaust passages;
• and
• at least two exhaust holes provided in the isolation member, located above corresponding exhaust passages, and communicating with the corresponding exhaust passages, wherein each exhaust passage corresponds to at least one exhaust hole.