Polymerelektrolyt-Brennstoffzelle

摘要

The present invention provides a polymer electrolyte fuel cell having a small-sized, light-weighted mechanism for fastening a stack of unit cells assembly. The polymer electrolyte fuel cell of the present invention includes a stack of unit cells (30) obtained by laying a plurality of unit cells one upon another; a first end plate (31) disposed on one end of the stack of unit cells; a second end plate (32) arranged on the other end of the stack of unit cells; an auxiliary plate (33;34) disposed at least outside the first end plate; at least one set of restraining means (39), each of which has a band-like shape and restrains a first member located on one end of an assembly, which includes the stack of unit cells, the first and the second end plates, and the auxiliary plate, and a second member located on the other end of the assembly to restrict separation of the first member and the second member from each other; a screw (35) fitted in a threaded hole formed in the auxiliary plate (33;34) in such a manner that an end of the screw comes into contact with the first end plate; and compressive means that generates a repulsive force to compress the stack of unit cells when the screw is fitted in the threaded hole of the auxiliary plate.