Battery cooling device

The utility model discloses a battery cooling device, which comprises a placing box, two sides of the placing box are provided with openings, the openings of the placing box are provided with sealing doors which can be opened and closed through hinge mechanisms, the placing box is provided with a plurality of nitrogen pipes, and the nitrogen pipes are connected with an external air pump; and the cooling device is used for circularly cooling the nitrogen in the placing box. According to the utility model, the placing box is provided with the openings at the two sides, one opening is the feed port, the other opening is the discharge port, a skip car filled with batteries is placed in the placing box from the feed port, the sealing door at the feed port is covered, so that the placing box forms a closed box body, an external air pump injects nitrogen into the placing box, the nitrogen does not contain moisture, so that the interior of the placing box is kept dry; the nitrogen adsorbs the heat of the battery, and