Battery module

A battery module comprises a battery box, a plurality of batteries, a busbar and an FPC (flexible printed circuit) board, and a box cover and a thin support are arranged at an opening of the battery box. The busbar is arranged on the thin support, the thin support is provided with a hollow part matched with the busbar, and the busbar penetrates through the hollow part to be connected with an electrode on the battery; the busbar is provided with a riveting hole, the box cover is provided with a through hole, the axis of the through hole coincides with the axis of the riveting hole, and the rivet penetrates through the riveting hole and the through hole so that the busbar and the box cover can be riveted. The busbar is in contact with the motor of the battery through the hollow part on the thin bracket to realize connection, and the hollow part reduces the mass of the thin bracket; and the box cover is riveted with the busbar, so that the fixed point of the box cover is transferred to the busbar, and a nut is n