Fuel cell stack

A fuel cell stack comprising:

• a fuel cell stack module including end plates coupled to opposite side surfaces of a stack of fuel cells, respectively, and coupling bars coupled to the end plates;
• and
• an enclosure including
• an upper enclosure covering a portion of a front surface, an upper surface, and a portion of the back surface of the fuel cell stack module,
• a lower enclosure covering a portion of the front surface, a lower surface, and a portion of the back surface of the fuel stack module,
• a left enclosure fixed to one of the end plates, and
• a right enclosure fixed to the other one of the end plates,
• wherein each of the upper enclosure and the lower enclosure are coupled to protruding portions of both the left enclosure and the right enclosure, wherein the protruding portions protrude forwards and backwards at side ends of each of a front and a back surface of the fuel cell stack module, and
• wherein the upper enclosure and the lower enclosure are bent toward surfaces of the fuel cell stack module from the protruding portions and are in surface contact with the surfaces of the fuel cell stack module.