Patent ID: 8647790

Claim:
A system for replacing a membrane-electrode assembly of a fuel cell stack, the system comprising: a fuel cell stack comprising replacement holes penetrating a pair of end plates, membrane-electrode assemblies, separators and recess portions extending toward the replacement holes on side faces of the separators; and a replacement device comprising a first tie member inserted into a portion of the replacement holes and fastened to a first portion of the fuel cell stack located on a first side of a replacement target of the fuel cell stack, and a second tie member inserted into a remaining portion of the replacement holes and fastened to a second portion of the fuel cell stack located on the other side of the replacement target, wherein the first tie member comprises a first bolt having a first opening near one end thereof, a first fixing pin inserted into the first opening through a first recess portion of a first separator located on the first side of the replacement target, and a first nut fastened to the first bolt, and wherein the second tie member comprises a second bolt having a second opening near one end thereof, a second fixing pin inserted into the second opening through a second recess portion of a second separator located on the second side of the replacement target, and a second nut fastened to the second bolt.