BATTERY AND BUFFER SHEET

A battery including: a plurality of cells, a plurality of buffer sheets 100 each disposed between respective adjacent cells, and a coolant passage for allowing a coolant to flow through a region where the buffer sheet 100 is disposed between adjacent cells, wherein the buffer sheet 100 includes a flat plate part 110, a plurality of protrusions 120 protruding from both sides of the flat plate part 110, and a plurality of through holes 130 provided so as to penetrate both sides of the flat plate part 110.