CN111554958A

CN111554958A - Fastening device and production line for fuel cell stack

Info

Publication number: CN111554958A
Application number: CN202010590319.XA
Authority: CN
Inventors: 闫永臣
Original assignee: Beijing Xinyan Chuangneng Technology Co ltd
Current assignee: Beijing Xinyan Chuangneng Technology Co ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2020-08-18

Abstract

The invention 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 includes a fastening device for 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, wherein the winding mechanism is used for winding a binding band and has a limiting effect on the binding band, the fastening mechanism is used for fastening the end part of the binding band, one end of the tension sensor is connected to the fastening mechanism, the tension sensor can monitor the tension of the winding binding band, 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 binding band to tighten on the winding mechanism. The fastening device of the fuel cell stack is suitable for fastening various electric stacks, can reduce the volume of the electric stacks, and improves the fastening efficiency and consistency of the electric stacks.

Description

Fastening device and production line for fuel cell stack

Technical Field

The invention relates to the technical field of fuel cells, in particular to a fastening device and a production line of a fuel cell stack.

Background

A fuel cell is a power generation device that directly converts chemical energy in a fuel and an oxidant into electrical energy. Bipolar plates, membrane electrodes, collector plates and end plates are important components in fuel cell stacks. The bipolar plates serve to distribute fuel, conduct electricity and support the membrane electrode, which is the site where the electrochemical reactions take place. After the bipolar plate and the membrane electrode are repeatedly stacked in series, the bipolar plate and the membrane electrode form a whole with a current collecting plate and an end plate which are arranged at two ends, and the whole is compressed under certain external pressure to obtain a fastened fuel cell stack, which is called an electric stack for short.

The fastening method of the electric pile is generally two, one method is to tighten through a screw rod and lock a nut, the structure and the design are relatively simple, but the volume of the electric pile is increased, and the miniaturization of the fuel cell and the improvement of the volume power density are not facilitated. The other method is that an interface structure is welded at the end part of the pile fastener, and the pile fastener is fastened by bolts and nuts, so that the use is relatively convenient; the disadvantage of this approach is that each fastener is only suitable for a single height stack.

Therefore, it is an urgent technical problem to design a fastening device for a fuel cell stack, which can reduce the volume of the stack, improve the fastening efficiency and consistency, and is suitable for fastening various stacks.

Disclosure of Invention

The invention aims to provide a fastening device and a production line of a fuel cell stack, which can reduce the volume of the stack, improve the fastening efficiency and consistency and are suitable for fastening various stacks.

Embodiments of the invention may be implemented as follows:

in a first aspect, an embodiment of the present invention provides a fastening device for a fuel cell stack, including:

the winding mechanism is used for winding the binding band and has a limiting effect on the binding band;

a fastening mechanism for fastening an end portion of the strap;

one end of the tension sensor is connected to the fastening mechanism, and the tension sensor can monitor the tension of the wound binding band;

a rack connected with the belt fastening mechanism;

a gear for meshing with the rack;

and the pneumatic tensioner is connected with the gear and used for driving the gear to rotate according to the tension detected by the tension sensor so as to drive the binding band to tighten on the winding mechanism.

In an alternative embodiment, the fastening means of the fuel cell stack further comprises:

one end of the first pipeline is connected to the pneumatic tensioner;

and the pressure regulating valve is connected to the other end of the first pipeline and used for regulating the tension value of the pneumatic tensioner, and the outlet pressure of the pressure regulating valve is regulated according to the tension detected by the tension sensor (250).

Like this, be provided with pressure regulating valve on pneumatic strainer's pipeline, pressure regulating valve can adjust pneumatic strainer's air feed pressure, can measure the pulling force value that the bandage received through force sensor to feedback pulling force value is used for pressure regulating valve's outlet pressure adjustment, reaches the purpose of adjustment bandage tensioning force.

a bracket connected to the rack;

the piston rod of the air cylinder is connected to the support, and the air cylinder is used for driving the support so that the rack is meshed with or separated from the gear.

the rack is in sliding fit with the sliding rail, and the support is connected with the rack through the sliding rail.

In an alternative embodiment, the slide rail comprises:

the supporting frame is provided with a through hole, and the through hole is used for the rack to pass through;

and the roller is arranged at the bottom of the through hole and used for supporting the rack.

In an alternative embodiment, the winding mechanism comprises:

the top surface of the lower pressing plate tool is provided with a first groove;

the bottom surface of the upper pressing plate tool is provided with a second groove, the first groove is matched with the second groove to form a belt hole, and the belt hole is used for the bandage to pass through.

In an optional embodiment, a boss is arranged on the bottom surface of the lower pressure plate tool, and the boss is used for pressing one end of the binding band.

and the pressure head is arranged on the top surface of the upper pressure plate tool and used for applying pressure to the upper pressure plate tool.

In an alternative embodiment, the fastening mechanism comprises:

a base;

the movable block is connected to the base through bolts, and an area formed between the movable block and the base is used for fastening the end part of the binding band.

In an alternative embodiment, the winding mechanism is used for winding a plurality of the binding bands at one time, and the fastening mechanism, the rack, the gear and the pneumatic tensioner are equal in number and are all multiple.

In a second aspect, embodiments of the present invention provide a production line for fuel cell stacks, the production line including the fastening device for fuel cell stacks according to the first aspect.

The fastening device and the production line of the fuel cell stack provided by the embodiment of the invention have the beneficial effects that:

1. the gear is driven to rotate through the pneumatic tensioner, the gear drives the rack to move, and the rack pulls the binding band to be tightened on the winding mechanism, so that the pile is fastened, and the binding band can be reliably and stably driven to be tightened;

2. the driving force of the pneumatic tensioner can be measured and adjusted, so that the tightening degree of the binding bands can be flexibly controlled, and the tension of a plurality of binding bands is consistent;

3. the length of the binding band can be flexibly adjusted according to the height of the mounted galvanic pile, so that the binding band can be conveniently wound on the galvanic piles of various sizes, and the binding band is suitable for fastening various galvanic piles and has good applicability.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a fastening device of a fuel cell stack according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of the winding mechanism of FIG. 1;

FIG. 3 is a schematic diagram of the path of the strap wrap;

FIG. 4 is a schematic structural view of a slide rail;

fig. 5 is a system control diagram of a fastening device of a fuel cell stack according to an embodiment of the present invention.

Icon: 100-fastening means of the fuel cell stack; 110-a winding mechanism; 111-pressing plate tooling; 112-an upper pressing plate tool; 113-a first groove; 114-a second groove; 115-boss; 120-pressure head; 130-a mounting frame; 140-a fastening mechanism; 141-a base; 142-a movable block; 150-cylinder; 160-a scaffold; 170-a slide rail; 171-a support frame; 172-a roller; 180-a rack; 190-gear; 200-pneumatic tensioner; 210-a first conduit; 220-a pipe joint; 230-pressure regulating valve; 240-a controller; 250-a tension sensor; 300-bandage.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

The existing method for fastening the electric pile by the screw increases the volume of the electric pile, and is not beneficial to the miniaturization of the fuel cell and the improvement of the volume power density. The existing method for fastening the galvanic pile by welding the fastener is only suitable for the galvanic pile with one height and has poor applicability.

Referring to fig. 1, the present embodiment provides a fastening device 100 for a fuel cell stack, which can reduce the size of the stack, improve the efficiency and consistency of fastening the stack, and is suitable for fastening various stacks.

The fastening device 100 of the fuel cell stack includes a band winding mechanism 110, a ram 120, a mounting bracket 130, a band fastening mechanism 140, a cylinder 150, a bracket 160, a slide rail 170, a rack 180, a gear 190, a pneumatic tensioner 200, a first pipe 210, a pipe joint 220, a pressure regulating valve 230, and a tension sensor 250.

Wherein, the winding mechanism 110 is used for winding the band 300, and can wind a plurality of bands 300 at one time, and the band 300 can be made of stainless steel or other materials. Referring to fig. 2, the tape winding mechanism 110 includes a lower platen tool 111 and an upper platen tool 112. Specifically, the indenter 120 is disposed on a top surface of the upper platen tooling 112, and the indenter 120 is used to apply pressure to the upper platen tooling 112.

The band fastening means 140 is for fastening the end of the binding band 300, and the band fastening means 140 includes a base 141 and a movable block 142, the movable block 142 is coupled to the base 141 by bolts, and an area formed between the movable block 142 and the base 141 is for fastening the end of the binding band 300.

The rack 180 is connected with the belt fastening mechanism 140, the rack 180 is in sliding fit with the sliding rail 170, the gear 190 is used for being meshed with the rack 180, the pneumatic tensioner 200 is connected with the gear 190, and the pneumatic tensioner 200 is used for driving the gear 190 to rotate so as to drive the binding belt 300 to be tightened on the belt winding mechanism 110.

One end of the first pipe 210 is connected to the pneumatic tensioner 200, and the other end of the first pipe 210 is connected to the pressure regulating valve 230, and the pressure regulating valve 230 is connected to the air source through the pipe joint 220. The pressure regulating valve 230 adjusts the air supply pressure in real time according to the feedback signal of the tension sensor 250, and is used for regulating the tension value of the pneumatic tensioner 200. The pneumatic tensioner 200 may also be lubricated with oil or grease to reduce friction and increase service life. In the present embodiment, a plurality of pneumatic tensioners 200 are used in parallel, and the tail gases of the compressed gas are all connected together by a common pipeline and are guided to the outside for collection, so as to prevent the atomized oil mist from polluting the indoor environment and the fuel cell stack.

The bracket 160 is connected to the rack 180, the piston rod of the air cylinder 150 is connected to the bracket 160, the bracket 160 is connected to the slide rail 170, and the air cylinder 150 is used for driving the bracket 160 to engage or disengage the rack 180 with or from the gear 190.

The mounting bracket 130 is connected to the ram 120, and the pressure regulating valve 230, the pneumatic tensioner 200, and the air cylinder 150 are all mounted on the mounting bracket 130. In this embodiment, the cylinder 150 is an oilless cylinder 150.

Referring to fig. 2, the band winding mechanism 110 includes a lower pressing plate tool 111 and an upper pressing plate tool 112, a first groove 113 is formed on the top surface of the lower pressing plate tool 111, a second groove 114 is formed on the bottom surface of the upper pressing plate tool 112, and the widths of the first groove 113 and the second groove 114 are both greater than the width of the binding band 300. The first groove 113 and the second groove 114 cooperate to form a band hole for the band 300 to pass through. In this embodiment, the number of the first grooves 113 and the second grooves 114 is three, and the first grooves 113 and the second grooves 114 are disposed in a one-to-one correspondence manner, so as to form three belt holes through which three straps 300 can pass simultaneously. In this way, the belt holes can ensure that the binding belt 300 is sufficiently limited, and the binding belt 300 cannot be excessively extruded by the lower pressure plate tool 111 and the upper pressure plate tool 112, so that the pneumatic tensioner 200 cannot pull the binding belt 300.

The lower surface of the lower platen tool 111 is provided with a boss 115, and after the band 300 is wound around the tape winding mechanism 110, the surface of the boss 115 presses one end of the band 300. In this embodiment, the number of the bosses 115 is three, and the bosses 115 are arranged in one-to-one correspondence with the first grooves 113. The width of the boss 115 is less than the width of the strap 300 to ensure that the boss 115 does not press against the end plates of the stack. Thus, during the assembly or tightening of the strap 300, the strap 300 is pressed by the bosses 115, which ensures that the strap 300 is not loosened or pulled away when the rack 180 applies a pulling force to the strap 300 during the pile loading pressure.

In other embodiments, between the upper platen tool 112 and the pressing head 120 and between the lower platen tool 111 and the stack, a positioning structure, such as a cylindrical rod, may be designed according to the stack positioning manner to sufficiently ensure the stacking dimension accuracy.

Referring to fig. 3, the winding path of the band 300 on the fastening device 100 of the fuel cell stack: first, strap 300 is unwound from position a, passed sequentially through B, C, D, and returned to position a; then, abutting the binding band 300 from the position A to the position B against the boss 115 of the lower pressure plate tool 111, and continuously winding the binding band 300 from the position A, so that the binding band 300 is clamped into the first groove 113 of the lower pressure plate tool 111 and sequentially passes through E, F; finally, the end of the band 300 in position F is fastened to the fastening mechanism 140, completing the winding of the band 300; in addition, the upper platen tool 112 needs to be assembled to the lower platen tool 111, and then the pressing head 120 is pressed on the upper platen tool 112 and applies a certain pressure to make the stack receive the required stack loading pressure.

Referring to fig. 4, the sliding rail 170 includes a supporting frame 171 and a roller 172, the supporting frame 171 is provided with a through hole for the rack 180 to pass through, the roller 172 is rotatably disposed at the bottom of the through hole, and the roller 172 is used for supporting the rack 180. Specifically, the roller 172 may be composed of a rotating shaft and a bearing sleeved on the rotating shaft, wherein the rotating shaft is installed on the supporting frame 171. The number of the rollers 172 may be plural, and the plural rollers 172 are spaced apart uniformly so that the rack 180 is stably moved.

Thus, the sliding rail 170 can guide the movement of the rack gear 180. In the using process of the sliding rail 170, lubricating oil can be used, so that the friction force between the rack 180 and the sliding rail 170 is reduced, the error of the tension force of the binding band 300 is reduced to the maximum extent, and the stress of each binding band 300 is consistent.

Referring to fig. 5, the dashed lines in fig. 5 represent gas path connections, and communication connections are realized. The fuel cell stack fastening device 100 further includes a controller 240 and a tension sensor 250, wherein the tension sensor 250 is used to collect a tension of the strap 300. The controller 240, the pressure regulating valve 230 and the tension sensor 250 are all electrically connected. The controller 240 controls the compressed gas of the gas source to enter the cylinder 150, and controls the outlet pressure of the pressure regulating valve 230 according to the tension value of the strap 300 collected by the tension sensor 250, thereby controlling the driving force of the pneumatic tensioner 200 to make the tension of each strap 300 uniform.

Specifically, in this embodiment, a plurality of tension control points are preset in the controller 240, wherein the tension control points at least include a first pretensioning force, a second pretensioning force and a third pretensioning force, which have gradually increasing tension values. After the controller 240 receives the tensioning starting signal, firstly, the controller 240 adjusts the outlet pressure of each pressure regulating valve 230, drives each pneumatic tensioner 200 to slowly tension all the straps 300, obtains the real-time tension value of each strap 300 through the tension sensor 250 in the tensioning process, quickly adjusts the outlet pressure of each pressure regulating valve 230 according to the tension value, balances the tensioning force of each strap 300, and enables the tension force applied to each strap 300 in the tensioning process to be consistent; then, when the tension of all the straps 300 reaches the first pre-tightening tension, the controller 240 continuously adjusts the outlet pressure of each pressure regulating valve 230, obtains the tension value in each tension sensor 250, continuously and rapidly adjusts the outlet pressure of the pressure regulating valve 230 according to the tension value, so that the tension of each strap 300 synchronously reaches the second pre-tightening tension, and maintains the pressure for a certain period of time, which may be 5 minutes; finally, the controller 240 adjusts the outlet pressure of each pressure regulating valve 230, obtains the tension value in each tension sensor 250, and continuously and rapidly adjusts the outlet pressure of the pressure regulating valve 230 according to the tension value, so that the tension of each strap 300 synchronously reaches the third pre-tightening tension, and maintains the pressure for a certain period of time, which may be 5 minutes.

In this embodiment, the controller 240 may adopt an industrial automatic control device such as a PLC, an industrial personal computer, or the like, and may regulate and control the stress of two or more straps in the tightening process through a program, thereby ensuring that the tightening force exerted on the fuel cell stack straps after tightening and assembling is consistent.

The length of the rack 180 can be flexibly adjusted according to the height of the pile and the length of the strap 300. Even if only one rack 180 with fixed size is provided, when the pulling force of the binding band 300 reaches the first pre-tightening pulling force, the controller 240 can control the rack 180 to be separated from the gear 190, so that the rack 180 is restored to the initial state, the band fastening mechanism 140 is loosened, the fastening mechanism 140 is locked again after the binding band 300 is tightened again, and tightening is continued, therefore, one rack 180 can fasten the electric piles with various specifications, and the electric pile tightening device is suitable for application of various electric piles.

In this embodiment, three binding bands 300 are wound around the band winding mechanism 110, and the number of the band fastening mechanisms 140, the rack 180, the gear 190, and the pneumatic tensioner 200 is equal to and three. Thus, the fastening device 100 for a fuel cell stack according to the present embodiment can simultaneously tighten the three bands 300 on the stack, thereby improving the efficiency of fastening the stack.

In other embodiments, the number of the fastening mechanisms 140, the rack 180, the gear 190 and the pneumatic tensioner 200 can be one, two or more, and can be flexibly arranged according to the processing requirement. The number of straps 300 can be adjusted as desired.

The operation of the fastening device 100 for a fuel cell stack provided in the present embodiment:

firstly, after the band 300 is wound and fixed on the fastening device 100 of the fuel cell stack, the controller 240 controls the piston rod of the air cylinder 150 to contract, so as to drive the bracket 160, the sliding rail 170 and the rack 180 to move upwards until the rack 180 is meshed with the gear 190;

then, the controller 240 collects the tension value of the tension sensor 250, controls the pneumatic tensioner 200 to tension the strap 300 by adjusting the outlet pressure of the pressure regulating valve 230 until the strap 300 meets the tension requirement on the cell stack, and manually or automatically welds the connection part of the strap 300;

finally, the controller 240 controls the piston rod of the cylinder 150 to extend out, so as to drive the bracket 160, the slide rail 170 and the rack 180 to move downwards until the rack 180 is completely separated from the gear 190, so that the rack 180 can slide freely, the end of the binding band 300 is detached from the band fastening mechanism 140, the height of the pressure head 120 is restored, the binding band 300 is cut off, and the pile fastening is completed.

The present embodiment also provides a production line of a fuel cell stack including the fastening device 100 of the fuel cell stack. The manufacturing line may also include an automated weld for welding strap 300 after strap 300 secures the stack.

The present embodiment provides advantageous effects of the fastening device 100 and the production line of the fuel cell stack:

1. the pipeline of the pneumatic tensioner 200 is provided with a pressure regulating valve 230, and the pressure regulating valve 230 can regulate the air supply pressure of the pneumatic tensioner 200 so as to achieve the purpose of regulating the tension force of the binding band 300;

2. the pneumatic tensioner 200 drives the gear 190 to rotate, the gear 190 drives the rack 180 to move, and the rack 180 pulls the binding band 300 to tighten on the winding mechanism 110, so that the pile is fastened, and the binding band 300 can be reliably and stably driven to tighten;

3. the tension sensor 250 detects the tension of the strap 300 and controls the pressure regulating valve 230 of each pneumatic tensioner according to the detected tension by using the controller 240, thereby rapidly adjusting the pressure of the compressed gas and driving the rack 180 to make the tension of each strap 300 uniform;

4. the driving force of the pneumatic tensioner 200 can be synchronously adjusted, so that the tightening degree of the binding band 300 can be flexibly controlled, and the maximum driving force of the pneumatic tensioner 200 is larger, so that the pneumatic tensioner is suitable for binding bands with different strengths and different materials;

5. the length of the band 300 wound on the band winding mechanism 110 can be flexibly adjusted, so that the band 300 can be conveniently wound on the electric piles of various sizes, and the band is suitable for fastening various electric piles and has good applicability.

The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A fastening device of a fuel cell stack, characterized by comprising:

a winding mechanism (110) for winding the band (300) and having a limiting effect on the band (300);

a fastening mechanism (140) for fastening an end of the band (300);

a tension sensor (250), one end of the tension sensor (250) being connected to the fastening mechanism (140), the tension sensor (250) being capable of monitoring a tension of the wrapping strap (300);

a rack (180) connected to the fastening mechanism (140);

a gear (190) for meshing with the rack (180);

the pneumatic tensioner (200) is connected with the gear (190), and the pneumatic tensioner (200) is used for driving the gear (190) to rotate according to the tension detected by the tension sensor (250) so as to drive the binding band (300) to tighten on the winding mechanism (110).

2. The fuel cell stack fastening device according to claim 1, further comprising:

a first pipe (210), one end of the first pipe (210) being connected to the pneumatic tensioner (200);

and the pressure regulating valve (230) is connected to the other end of the first pipeline (210), the pressure regulating valve (230) is used for regulating the tension value of the pneumatic tensioner (200), and the outlet pressure of the pressure regulating valve (230) is regulated according to the tension detected by the tension sensor (250).

3. The fuel cell stack fastening device according to claim 1, further comprising:

a bracket (160) connected to the rack (180);

the piston rod of the air cylinder (150) is connected to the support (160), and the air cylinder (150) is used for driving the support (160) to enable the rack (180) to be meshed with or separated from the gear (190).

4. The fuel cell stack fastening device according to claim 3, further comprising:

the rack (180) is in sliding fit with the sliding rail (170), and the bracket (160) is connected with the rack (180) through the sliding rail (170).

5. The fuel cell stack fastening device according to claim 4, wherein the slide rail (170) comprises:

the supporting frame (171) is provided with a through hole, and the through hole is used for the rack (180) to pass through;

a roller (172) disposed at a bottom of the through hole, the roller (172) supporting the rack (180).

6. The fuel cell stack fastening device according to claim 1, wherein the winding mechanism (110) comprises:

the top surface of the lower pressing plate tool (111) is provided with a first groove (113), the bottom surface of the lower pressing plate tool (111) is provided with a boss (115), and the boss (115) is used for pressing one end of the binding band (300);

the lower die comprises an upper pressing plate tool (112), wherein a second groove (114) is formed in the bottom surface of the upper pressing plate tool (112), the first groove (113) and the second groove (114) are matched to form a belt hole, and the belt hole is used for the belt (300) to pass through.

7. The fuel cell stack fastening device according to claim 6, further comprising:

the pressing head (120) is arranged on the top surface of the upper pressing plate tool (112), and the pressing head (120) is used for applying pressure to the upper pressing plate tool (112).

8. The fuel cell stack fastening device according to claim 1, wherein the fastening mechanism (140) comprises:

a base (141);

a movable block (142) bolted to the base (141), an area formed between the movable block (142) and the base (141) for fastening an end of the strap (300).

9. The fuel cell stack fastening device according to claim 1, wherein the fastening mechanism (140), the rack (180), the gear (190), and the pneumatic tensioner (200) are equal in number and are each provided in plurality, and the winding mechanism (110) can wind a plurality of the bands (300) at a time.

10. A production line of fuel cell stacks, characterized by comprising a fastening device of a fuel cell stack according to any one of claims 1 to 9.