Battery device

The utility model relates to the technical field of batteries, and discloses a battery device which is used for reducing the influence of temperature on a battery. The battery device comprises a battery pack, a bottom plate, an air inlet assembly and an exhaust assembly, the battery pack comprises a plurality of batteries which are stacked in the first direction; the battery comprises a first surface, the first surface is arranged towards the bottom plate, and an anti-explosion valve is arranged on the first surface; the bottom plate is located at the bottom of the battery pack, multiple channels are formed in the bottom plate, the first ends of the channels communicate with the air inlet assembly, and the second ends of the channels communicate with the exhaust assembly; a plurality of pressure relief holes are formed in the surface, facing the battery pack, of the bottom plate, are communicated with the channel and are used for allowing discharge of the battery to enter the channel after the anti-explosion