BATTERY PACK

A battery pack includes: a box; a bracket provided in the box, the bracket being provided with an accommodation cavity therein, immersion liquid being provided in the accommodation cavity, and a first side wall of the accommodation cavity being provided with an opening therethrough along a first direction; and a cell provided in the box, the cell comprising a body and an electrode column protruding from a top end of the body, the electrode column extending through the opening and being immersed in the immersion liquid, the top end of the body being connected to the first side wall and sealing the opening, and a side surface of the body being in contact with the bracket to transfer heat to the immersion liquid through the bracket.