Fuel cell stack fastening device and production line

The utility model provides a fastening device and a production line of a fuel cell stack, and relates to the technical field of fuel cells. The production line comprises the fastening device of the fuel cell stack. The fastening device of the fuel cell stack comprises a winding mechanism, a fastening mechanism, a rack, a gear, a pneumatic tensioner and a tension sensor, the winding mechanism is used for winding bandages, the binding belt is limited; the fastening mechanism is used for fastening the end part of the bandage; one end of the tension sensor is connected to the fastening mechanism,the tension sensor can monitor the tension of the wound bandage, the rack is connected with the fastening mechanism, the gear is used for being meshed with the rack, the pneumatic tensioner is connected with the gear, and the pneumatic tensioner is used for driving the gear to rotate according to the tension detected by the tension sensor so as to drive the bandage to be tightened on the winding mechanism. The fastening d