Battery pack having BMU component damage prevention structure

A battery pack comprising:

• two or more battery cells in which a positive terminal and a negative terminal protrude from one outer periphery of each of the battery cells;
• a Battery Management Unit (BMU) electrically connected to the positive terminal and the negative terminal of each of the battery cells to control an operation of the battery cells;
• and
• a frame member on which each of the battery cells and the BMU is respectively mounted,
• wherein the frame member comprises:
• cell mounting parts on which the battery cells are mounted;
• a BMU mounting part on which the BMU is mounted;
• and
• a partition configured to divide the cell mounting parts and the BMU mounting part, and the partition having a stress concentration relaxation structure,
• wherein the partition is formed to have a slope inclined by a predetermined angle θ in a direction of the cell mounting parts, and the partition is not perpendicular with the cell mounting parts.