COMPRESSION PAD, BATTERY CELL STACK, AND BATTERY MODULE INCLUDING SAME

A battery cell stack according to an embodiment of the present disclosure may include a plurality of battery cells arranged parallel to each other, each battery cell including an electrode assembly having an electrode tab and an outer packaging accommodating the electrode assembly; and a compression pad interposed between the plurality of battery cells. The compression pad may include a main portion; and a side portion disposed at an end portion of the main portion, and having a lower compression ratio than the main portion, the side portion overlapping an electrode tab-side region of the battery cell with respect to a thickness direction of the compression pad.