Patent ID: 7910261

Claim:
A cell voltage measurer for a fuel cell stack comprising: membrane-electrode assemblies and separators alternatively stacked with the membrane-electrode assemblies to form a stacked structure; a pair of end plates for supporting opposite sides of the stacked structure; and fastening mechanisms for fastening the pair of end plates, at least one of the fastening mechanisms comprising a fastening bar extending along a first direction to be fastened to each of the pair of end plates and the cell voltage measurer comprising: a plurality of terminals electrically connected to the separators, respectively; and a plurality of wiring lines passing through the fastening bar along the first direction and electrically connected to the plurality of terminals, respectively, wherein the fastening bar is formed with a hollow extending along the first direction through which the plurality of wiring lines pass, wherein the hollow is a lateral opening extending along the first direction in which the plurality of wiring lines are inserted, and wherein the fastening bar is formed with a slit extended from the lateral opening, the slit being provided corresponding to at least one of the separators, and being for allowing at least one of the wiring lines to pass therethrough.