| 摘要 |
The invention relates to a battery cell that comprises: an electrode assembly including a first electrode portion, a second electrode portion, and a separation membrane that separates the first electrode portion from the second electrode portion; a first electrode tab and a second electrode tab that are connected to the first electrode portion and the second electrode portion, respectively; and a case in which the first electrode tab and the second electrode tab are exposed to the outside, wherein the case accommodates the first electrode portion, the second electrode portion, and the separation membrane therein. The separation membrane includes a first bending portion surrounding at least part of the first electrode portion and the second electrode portion, wherein the first bending portion is bent at one end of the first electrode portion, and a second bending portion is bent at one end of the second electrode portion. The first bending portion and the second bending portion include contact portions which come into contact with each other when the separation membrane is folded. |
