FOLDABLE BATTERY, AND ELECTRONIC DEVICE INCLUDING SAME

This electronic device comprises: a hinge module; a first housing connected to the hinge module; and a second housing that folds together with the first housing around the hinge module. In a folded state, the electronic device includes: the housings disposed facing each other; and at least one printed circuit board and a battery pack which are disposed in the inner space of the housings. The battery pack includes: a battery cell having a first cell region disposed in the first housing, a second cell region extending from the first cell region and disposed in the second housing through the hinge module, a foldable region connecting the first cell region and the second cell region, a plurality of base material portions stacked so as to extend from the first cell region to the second cell region through the foldable region, and disposed so as to be electrically insulated by separators, and mixture layers applied to one surface or both surfaces of each of the plurality of base material portions; and a PCM unit extending from at least a portion of the battery cell and disposed so as to be electrically connected to the printed circuit board. In the foldable region, the mixture layers may be excluded, and a stacked structure of the plurality of base material portions of different lengths and the separators may be included.