| 摘要 |
Disclosed herein is a battery cell configured to have a structure in which an electrode assembly, including positive electrodes, negative electrodes, and separators disposed respectively between the positive electrodes and the negative electrodes, is mounted in a battery case, wherein the electrode assembly is provided with a deformation part, a sectional width of which is discontinuously or continuously decreased, formed at at least a portion of an outer edge of the electrode assembly on the basis of positions of electrode terminals of the electrode assembly in vertical section, and the battery case includes two or more case members each made of a metal sheet, the case members being coupled to each other in a state in which the electrode assembly is mounted in the case members, at least one of the case members being provided with a receiving part having an internal shape corresponding to the deformation part of the electrode assembly. |
