Box body assembly, battery and electric equipment

The utility model provides a box body assembly, a battery and electric equipment. The box body assembly comprises a box body, a heat management part and a connecting pipe; the box body is provided with a wall part which is provided with a through hole; the heat management part is positioned in the box body; the connecting pipe is inserted into the through hole and is communicated with the heat management component; a connecting part is arranged on the peripheral surface of the connecting pipe, the outer surface, deviating from the accommodating space, of the wall part serves as a projection surface, the direction perpendicular to the outer surface serves as the projection direction, and the projection of the connecting part on the projection surface is located in the range of the projection of the through hole on the projection surface; the connecting part is fixedly connected with the wall part, and the connecting pipe comprises a first section and a second section which are axially connected; the connecting