Air-cooled battery pack

The utility model relates to an air-cooled type battery pack, which comprises a box body with an upper cover, a battery module and a BDU module, the box body is provided with an air cavity, an air channel and fins, a cooling fan is assembled in the air cavity, the air channel is concave inwards, the air channel and the air cavity are formed on the same axis and are communicated with each other, the fins are integrally formed on the box body, and the BDU module is arranged on the box body. The box body is a part of the box body; the air duct forms a partition in the box body, and the battery modules are assembled on the two sides of the partition; the BDU module is vertical to the battery module and is fixed at the tail end of the partition in the box body; a BDU upper cover of the BDU module is provided with a BMS mounting hole and a copper bar connecting hole, and the bottom of each hole position is correspondingly connected with a corresponding electronic component; the BDU module is connected with the BMS