Foldable energy storage device

The utility model discloses a foldable energy storage device, which relates to the technical field of energy storage batteries and comprises a bottom plate, two ends of the bottom plate are fixedly sleeved with fixing sleeves, fixing columns are fixedly sleeved in the fixing sleeves, moving parts are symmetrically arranged on outer rings of the fixing columns, and foldable supporting parts are arranged on the moving parts. Solar panels are arranged on the sides, away from each other, of the carrying pieces, two U-shaped frame bodies are arranged on the sides, close to each other, of the carrying pieces, and energy storage batteries are arranged in the frame bodies. The solar panel can be quickly folded, the occupied space is reduced, meanwhile, the whole device is convenient to move, a user can conveniently carry the device in a folded state, the user can conveniently move the device to the sun in an unfolded state, the solar panel can better receive irradiation of the sun, meanwhile, the angle of the solar p