Fuel cell stack

A fuel cell stack comprising:

• a cell stack body including a plurality of stacked power generation cells, the power generation cells each including a membrane electrode assembly and a separator;
• a terminal plate and an insulator disposed at an end of the cell stack body in a stacking direction;
• and
• a stack case containing the cell stack body,
• wherein the terminal plate is disposed between the cell stack body and the insulator;
• and
• a load in the stacking direction is applied to the cell stack body, the terminal plate, and the insulator, and
• wherein the stack case includes a case body surrounding the cell stack body and a pair of end plates joined to both ends of the case body,
• the cell stack body, a pair of the terminal plates, and a pair of the insulators are held between the pair of end plates,
• at least one of the pair of end plates is joined to the case body using a bolt,
• the insulator includes a recess recessed in a direction away from the cell stack body, and a frame shaped outer peripheral portion surrounding the recess and protruding from the recess toward the cell stack body,
• wherein elastic structure elastically pressing the terminal plate in a direction from the insulator toward the cell stack body is sandwiched between the insulator and the terminal plate,
• at one end of the cell stack body in the stacking direction, the terminal plate, the elastic structure, the insulator are provided in this order in the stacking direction from the cell stack body, and
• wherein at one end of the cell stack body in the stacking direction, the frame shaped outer peripheral portion is configured to press an outer peripheral portion of the power generation cell by the at least one of the pair of end plates joined to the case body using the bolt.