Patent claim: A fuel cell module 30 130 230 comprising a fuel cell 43a including a plurality of cells 43a1a that are stacked with one another in a first direction the fuel cell 43a being formed with an anode gas flow passage 91a at an inner portion of the fuel cell 43a the anode gas flow passage 91 a sending an anode gas from a first end of the anode gas flow passage 91 a to a second end of the anode gas flow passage 91 a in a second direction that is orthogonal to the first direction the fuel cell 43a being formed with a cathode gas flow passage 95 at the inner portion of the fuel cell 43a the cathode gas flow passage 95 sending a cathode gas from the first end to the second end the fuel cell 43a generating an electric power by the anode gas and the cathode gas a cathode gas introduction member 57 being provided at a first side of the fuel cell 43a the cathode gas introduction member 57 including an outlet 57c opening towards the first end of the fuel cell 43a the cathode gas introduction member 57 sending the cathode gas from the outlet 57c to the cathode gas flow passage 95 a wall member 45a 45b being provided at a second side of the fuel cell 43a the wall member 45a 45b being spaced apart from the fuel cell 43a a first flow passage F1 being formed between the fuel cell 43a and the wall member 45a 45b the first flow passage F1 communicating with the cathode gas flow passage 95 the first flow passage F1 sending the cathode gas from the first end to the second end and a first flow block member 47 147 247 247a 247b being provided within the first flow passage F1 the first flow block member 47 147 247 247a 247b being provided at the second end relative to an intermediate position of the first flow passage F1 in the second direction the first flow block member 47 147 247 247a 247b blocking the cathode gas from flowing in the first flow passage F1.

Related passage: It is preferable that the thermal insulating members 17 be arranged in the vicinity of the cell stacks 5.It is particularly preferable that the thermal insulating members 17 be arranged on the side surfaces of the cell stacks 5 extending in the direction in which the fuel cells 3 are arranged and that the thermal insulating members 17 have a width greater than or equal to the width of the side surfaces of the cell stacks 5 in the direction in which the fuel cells 3 are arranged.It is preferable that the thermal insulating members 17 be arranged on both side surface sides of the cell stacks 5.This makes it possible to effectively inhibit temperature decreases in the cell stacks 5.Furthermore this makes it possible to inhibit oxygencontaining gas led in by theoxygencontaining gas introduction member 11 from being discharged from the side surface sides of the cell stacks 5 thereby making it possible to promote the flow of oxygencontaining gas between the fuel cells 3 of the cell stacks 5.Note that openings 18 are formed in the thermal insulating members 17 arranged on both side surface sides of the cell stacks 5 in order to regulate the flow of oxygencontaining gas to the fuel cells 3 and to decrease the differences in temperature in the lengthwise direction in which the cell stacks 5 extend as well as in the direction in which the fuel cells 3 are stacked.