The present invention provides a battery rack which can effectively prevent fire or heat from spreading, and recycle an undamaged battery pack. In order to achieve the above purpose, a battery rack according to the present invention comprises: multiple battery packs vertically arranged, each of the battery packs comprising multiple secondary batteries stacked in one direction and a pack housing which has an internal space formed therein so as to receive the multiple secondary batteries and is configured to enable a fire extinguishing solution to be supplied to the inside thereof when the temperature therein rises up to a predetermined temperature or higher; and a rack case having a receiving space in which the multiple battery packs can be received, and including multiple shelf plates, each having a mounting surface on which the battery pack is mounted and which is inclined at a predetermined angle such that the height thereof gradually decreases toward one direction, and an extension part having an end portion toward the one direction, which protrudes further in the outer direction than the battery pack positioned below.