| abstract |
An electrode assembly having a structure in which a separation membrane is interposed between a positive electrode and a negative electrode is a battery cell built in a battery case, and two or more electrodes or unit cells are arranged in a height direction with respect to a plane. The electrode assembly includes: a stacked electrode assembly; and a battery case in which a housing portion for mounting the electrode assembly is formed. The electrode assembly includes a side (a), a side (b), A rectangular shape having sides (c) and (d), and an internal angle between the side (a) where the electrode terminal of the electrode plate or unit cell is located and the side (b) adjacent to the side (a) is 90 degrees. The battery case is inclined so as to be less than the above, and the battery case storage portion is formed in an inner surface shape corresponding to the planar shape of the electrode assembly. |