Bonding jig for fuel cell and bonding method for fuel cell

Abstract

The problem to be solved by the present invention is to provide a bonding jig for a fuel cell, which is easy to bond two thin films in an intermediate layer to correct relative positions with high precision in the manufacturing stage of the fuel cell. In order to solve the problem, the fitting jig for the fuel cell is provided with an upper jig and a lower jig. A bonding jig for a fuel cell is configured so as to be capable of being set in a first state in which a first thin film is disposed on the lower surface of an upper jig and a second thin film is disposed on the upper surface of the lower jig. And an adhesive is applied to at least one of the lower surface of the first film and the upper surface of the second film. In the first state, if an upper jig is mounted on the lower jig, a second state in which the first film and the second film are spaced apart from each other in the vertical direction is formed. And the laminating jig for the fuel cell is configured to be capable of pressing the first thin film on the second thin film from the second state.

Description

Technical Field

[0001] The present invention relates to a jig and method for fitting components of a fuel cell. Background Art

[0002] In a fuel cell, a gas diffusion layer on the anode side, an intermediate layer, and a gas diffusion layer on the cathode side are included in sequence from one side. When the fuel cell supplies a fuel gas as a hydrogen-containing gas to the gas diffusion layer on the anode side and an oxidizing gas as an oxygen-containing gas to the gas diffusion layer on the cathode side, power generation occurs.

[0003] [Prior Art Documents]

[0004] (Patent Document)

[0005] Patent Document 1: Japanese Patent Application Laid-Open No. 2023-161181 Summary of the Invention

[0006] [Problems to be Solved by the Invention]

[0007] In order to improve the high durability of the intermediate layer of a fuel cell, the present inventors are developing a structure in which the edge portion of an electrolyte membrane is protected from both sides by two thin films. These two thin films form a sub-gasket.

[0008] However, the present invention has noted the following problems in this configuration. These two thin films are preferably fitted at the correct relative positions with as high precision as possible. This is because if they are fitted at a relative position deviated from the correct relative position, warping may occur in the sub-gasket formed by these two thin films.

[0009] However, when these two thin films are fitted, due to accidental contact between the thin films, sometimes these two thin films are fitted at a relative position deviated from the correct relative position.

[0010] As a countermeasure, when fitting two thin films, a method of temporarily inserting a PTFE (polytetrafluoroethylene) sheet between the thin films is considered. Specifically, in this method, two thin films are positioned on both sides of the PTFE sheet using the same positioning pins. The adhesive side of one of the thin films contacts the PTFE sheet. After that, while pulling out the PTFE sheet, the two thin films are brought into contact with each other, and thus these two thin films are fitted using an adhesive.

[0011] In this countermeasure, accidental contact between the thin films can be avoided by the PTFE sheet. However, when pulling out the PTFE sheet, the thin films may be deformed following the PTFE sheet. As a result, the two thin films may be fitted at a relative position deviated from the correct relative position.

[0012] In addition, the above problem has been described by taking as an example the case where the edge portions of the electrolyte membrane are protected from both sides by using two films. However, the same problem may occur even when the intermediate layer of the fuel cell contains two films in other ways.

[0013] The present invention has been made in view of the above circumstances, and an object thereof is to easily bond two films in an intermediate layer to a correct relative position with high precision at the manufacturing stage of a fuel cell.

[0014] [Technical means for solving the problem]

[0015] The present inventors have found that the above object can be achieved by using a specified jig, and thus have completed the present invention. The present invention is the following (1) The bonding jig for a fuel cell according to (9), and (10) The bonding method for a fuel cell according to (12).

[0016] (1) A bonding jig for a fuel cell, which is used for bonding the first film to the second film at the manufacturing stage of a fuel cell including an intermediate layer having a first film and a second film, and

[0017] The bonding jig for a fuel cell includes an upper jig configured to be able to dispose the first film on the lower surface thereof, and a lower jig configured to be able to dispose the second film on the upper surface thereof, and

[0018] It is configured to be able to be set to a first state, where the first film is disposed on the lower surface of the upper jig, the second film is disposed on the upper surface of the lower jig, and an adhesive is applied to at least one of the lower surface of the first film and the upper surface of the second film.

[0019] In the first state, if the upper jig is mounted on the lower jig, a second state is formed in which the first film and the second film are opposed to each other with a gap in the vertical direction.

[0020] And it is configured to be able to press the first film onto the second film from the second state.

[0021] According to this configuration, by opposing the first film and the second film with a gap in the vertical direction, accidental bonding of these two films can be avoided. By pressing the first film onto the second film from this state, the two films can be bonded. Thus, it is easy to bond the two films to the correct relative position with high precision.

[0022] Moreover, there is no need to dispose the aforementioned PTFE sheet between the first film and the second film. Therefore, there is no worry that when pulling out the PTFE sheet, the first film and the second film follow the PTFE sheet and the two films are bonded at a relative position deviated from the correct relative position.

[0023] As described above, according to this configuration, in the manufacturing stage of the fuel cell, it is easy to bond the two films in the intermediate layer at the correct relative position with high precision.

[0024] (2) The fuel cell bonding jig according to the foregoing (1), wherein the fuel cell bonding jig includes a replaceable collar for adjusting the gap between the upper jig and the lower jig.

[0025] According to this configuration, by replacing the collar, it is easy to oppose the first film and the second film at an appropriate interval in the vertical direction. Thus, it is easy to bond the two films at the correct relative position with high precision.

[0026] (3) The fuel cell bonding jig according to the foregoing (1) or (2), wherein

[0027] the fuel cell bonding jig includes a pressing member,

[0028] a jig window into which the pressing member can be inserted is formed on the upper jig,

[0029] and it is configured that by inserting the pressing member into the jig window from the aforementioned second state, a specified portion of the first film can be pressed against a specified portion of the second film.

[0030] According to this configuration, by inserting the pressing member into the jig window, a specified portion of the first film can be pressed against a specified portion of the second film. Therefore, it is easy to bond the specified portion of the first film to the specified portion of the second film at the correct relative position with high precision. Furthermore, thereafter, based on the specified portions of the bonded first film and second film, portions other than the specified portions can be bonded. Thus, it is easy to bond the entire first film and second film at the correct relative position with high precision.

[0031] (4) The fuel cell bonding jig according to any one of the foregoing (1) (3), wherein the upper jig includes an upper adsorption mechanism configured to be able to adsorb the first film, and is configured to be able to dispose the first film on the lower surface of the upper jig by the adsorption generated by the upper adsorption mechanism.

[0032] According to this configuration, the first film can be disposed on the lower surface of the upper jig against gravity by the adsorption generated by the upper adsorption mechanism. Moreover, by this adsorption, the first film can be easily unfolded along the lower surface of the upper jig without being bent. Thus, it is easy to bond two films at the correct relative positions with high precision.

[0033] (5) The bonding jig for a fuel cell according to the foregoing (4), wherein

[0034] A positioning portion capable of positioning the foregoing first film is provided on the upper surface of the foregoing lower jig.

[0035] The foregoing upper adsorption mechanism is configured to be able to adsorb the foregoing first film positioned by the foregoing positioning portion on the lower surface of the foregoing upper jig.

[0036] According to this configuration, after the first film is positioned on the lower jig by the positioning portion, the first film is only adsorbed on the lower surface of the upper jig, and the first film can be disposed at a specified position on the lower surface of the upper jig. Thus, it is easy to bond two films at the correct relative positions with high precision.

[0037] (6) The bonding jig for a fuel cell according to any one of the foregoing (1) (5), wherein

[0038] A positioning portion capable of positioning the foregoing second film is provided on the upper surface of the foregoing lower jig.

[0039] According to this configuration, it is easy to dispose the second film at a specified position on the upper surface of the lower jig by the positioning pins. Thus, it is easy to bond two films at the correct relative positions with high precision.

[0040] (7) The bonding jig for a fuel cell according to any one of the foregoing (1) (6), wherein the foregoing lower jig includes a lower adsorption mechanism configured to be able to adsorb the foregoing second film.

[0041] According to this configuration, by the adsorption generated by the lower adsorption mechanism, the second film can be easily unfolded along the lower jig without being bent. Thus, it is easy to bond two films at the correct relative positions with high precision.

[0042] (8) The bonding jig for a fuel cell according to any one of the foregoing (1) (7), wherein the foregoing lower jig includes a positioning shaft protruding upward.

[0043] The foregoing upper jig is positioned in the horizontal direction with respect to the foregoing lower jig by the foregoing positioning shaft.

[0044] According to this configuration, the upper jig and the lower jig can be easily aligned accurately by the positioning shaft, so that the two films can be easily bonded at an accurate relative position with high precision.

[0045] (9) According to (1) above (8) The fuel cell lamination jig according to any one of the preceding claims, wherein the first film and the second film each include a protective film for protecting an edge portion of the electrolyte membrane,

[0046] One of the first thin film and the second thin film further includes the electrolyte membrane.

[0047] According to this configuration, the edge portion of the electrolyte membrane can be protected by the first thin film protection film and the second thin film protection film.

[0048] (10) A fuel cell lamination method, comprising laminating the first film to the second film in a manufacturing stage of a fuel cell having an intermediate layer including a first film and a second film, wherein:

[0049] preparing a jig including an upper jig configured to be able to place the first film on the lower surface, and a lower jig configured to be able to place the second film on the upper surface,

[0050] The first state is set to a first state in which the first film is arranged on the lower surface of the upper jig, the second film is arranged on the upper surface of the lower jig, and an adhesive is applied to at least one of the lower surface of the first film and the upper surface of the second film.

[0051] In the first state, the upper jig is mounted on the lower jig, thereby setting the first film and the second film to face each other with a gap in the vertical direction.

[0052] The first film is bonded to the second film by pressing the first film against the second film from the second state.

[0053] According to this method, similar to the jig described in (1) above, it is easy to attach two films to each other at a correct relative position with high precision.

[0054] (11) The fuel cell bonding method according to (10), wherein:

[0055] The jig includes a pressing piece, and a jig window into which the pressing piece can be inserted is formed on the upper jig.

[0056] By inserting the pressing member into the jig window from the aforementioned second state and pressing the first specified portion, which is a specified portion of the aforementioned first film, against the second specified portion, which is a specified portion of the aforementioned second film, the first specified portion is bonded to the second specified portion using the aforementioned adhesive.

[0057] According to this method, as in the case of the aforementioned (3), it is easy to bond two films to each other at the correct relative positions with high precision.

[0058] (12) According to the bonding method for a fuel cell described in the aforementioned (11), after removing the bonded body of the aforementioned first film and the aforementioned second film from the aforementioned jig, the bonded body is pressed using a roller, so that portions of the aforementioned first film other than the aforementioned first specified portion and portions of the aforementioned second film other than the aforementioned second specified portion are bonded using the aforementioned adhesive.

[0059] According to this configuration, by pressing the bonded body using a roller, it is easy to bond portions of the first film other than the first specified portion and portions of the second film other than the second specified portion to each other at the correct relative positions with high precision.

[0060] [Advantages of the Invention]

[0061] As described above, according to the jig of the aforementioned (1) and the method of the aforementioned (10), it is easy to bond two films to each other at the correct relative positions with high precision. Further, according to the jig of the aforementioned (2) (9) and the methods of the aforementioned (11) and (12) that cite the aforementioned (10), respective additional effects will be obtained. [Description of the Drawings]

[0062] Figure 1 is a perspective view showing a bonding jig for a fuel cell according to the first embodiment.

[0063] Figure 2 is an exploded sectional view showing a bonding jig for a fuel cell.

[0064] Figure 3 is a sectional view showing a state in which the first film is disposed on the upper surface of the lower jig.

[0065] Figure 4 is a sectional view showing a state in which the upper jig is disposed on the lower jig.

[0066] Figure 5 is a sectional view showing a state in which the first film is adsorbed on the lower surface of the upper jig.

[0067] Figure 6 is a sectional view showing a state in which the upper jig is removed from the lower jig.

[0068] Figure 7 It is a cross-sectional view showing a state where a second thin film is disposed on a lower jig.

[0069] Figure 8 It is a cross-sectional view showing a state where an upper jig is disposed on a lower jig.

[0070] Figure 9 It is a cross-sectional view showing a state where a first specified portion is pressed against a second specified portion by a pressing member.

[0071] Figure 10 It is a cross-sectional view showing a state where a bonding body is pressed by a roller.

[0072] Figure 11 It is a cross-sectional view showing an intermediate layer of a fuel cell.

[0073] Figure 12 It is a cross-sectional view showing a state where gas diffusion layers are installed on both sides of the intermediate layer. Detailed Embodiments

[0074] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. Note that the present invention is not limited to the following embodiments in any way and can be appropriately modified without departing from the gist of the present invention.

[0075] [First Embodiment]

[0076] Figure 1 The fuel cell bonding jig 100 shown is a jig for manufacturing Figure 12 the fuel cell 50 shown. In addition, the fuel cell bonding jig 100 may also be simply referred to as a "jig".

[0077] As Figure 12 shown, the fuel cell 50 sequentially includes a first gas diffusion layer 20, an intermediate layer 30, and a second gas diffusion layer 40 from one direction. The first gas diffusion layer 20 is a gas diffusion layer on the anode side. The second gas diffusion layer 40 is a gas diffusion layer on the cathode side. In addition, the intermediate layer 30 may also be referred to as "UEA" or "unitized electrode assembly".

[0078] The intermediate layer 30 sequentially includes a first protective film 32, an electrolyte membrane 35, and a second protective film 38 from one side. The first protective film 32 is a film for protecting the edge portion of the electrolyte membrane 35 from one side. The second protective film 38 is a film for protecting the edge portion of the electrolyte membrane 35 from the other side.

[0079] The first protective film 32 and the second protective film 38 are made of resin. These two protective films 32, 38 form a sub-gasket. A film window 32w is formed in the central portion of the first protective film 32 for exposing a portion of the electrolyte membrane 35 other than the edge portion to one side. A film window 38w is formed in the central portion of the second protective film 38 for exposing a portion of the electrolyte membrane 35 other than the edge portion to the other side.

[0080] From another perspective, the above-mentioned intermediate layer 30 includes the following first film f1 and second film f2.

[0081] As Figure 2 shown, the first film f1 includes the first protective film 32. The second film f2 includes the electrolyte membrane 35 and the second protective film 38. The electrolyte membrane 35 is mounted on the second protective film 38 in a form that blocks the film window 38w in the second protective film 38 from one side. Specifically, the edge portion of the electrolyte membrane 35 is adhered to the peripheral portion of the film window 38w in the second protective film 38 by the adhesive A.

[0082] As Figure 11 shown, the intermediate layer 30 is formed by laminating the first film f1 to the second film f2 using the adhesive A. At this time, the edge portion of the electrolyte membrane 35 is protected from both sides by the first protective film and the second protective film 38.

[0083] As Figure 12 shown, a first gas diffusion layer 20 is mounted on one side closer to the first film f1, and a second gas diffusion layer 40 is mounted on the other side closer to the second film f2. In addition, an anode electrode 20e is formed on the surface of the first gas diffusion layer 20 on the side of the intermediate layer 30. Further, a cathode electrode 35e is provided on the surface of the electrolyte membrane 35 on the side of the second protective film 38.

[0084] Hereinafter, the hydrogen-containing gas is referred to as "fuel gas", and the oxygen-containing gas is referred to as "oxidizing gas". When the fuel cell 50 is in use, the anode electrode 20e and the cathode electrode 35e are electrically connected via a circuit including the power supply object. In this state, when the fuel gas is supplied to the first gas diffusion layer 20 and the oxidizing gas is supplied to the second gas diffusion layer 40, power generation occurs.

[0085] Figure 1 The fuel cell laminating jig 100 shown is a jig for laminating the first film f1 to the second film f2 in the manufacturing stage of the fuel cell 50 shown above. The fuel cell laminating jig 100 includes an upper jig 70, a lower jig 80, and a pressing member 60.

[0086] The lower jig 80 is provided with a positioning shaft 88 protruding upward from the upper surface of the lower jig 80. The positioning shaft 88 positions the upper jig 70 relative to the lower jig 80 in the horizontal direction by being inserted through the insertion hole 78 provided on the upper jig 70.

[0087] As Figure 2 shown, the lower jig 80 further includes a lower adsorption mechanism 82, a positioning pin 83, and a collar 86. In addition, the positioning pin 83 can also be referred to as a "positioning portion".

[0088] The lower adsorption mechanism 82 includes a porous body 82a and Figure 1 the suction system 82b shown as. As Figure 2 shown, the porous body 82a is provided on the upper surface of the lower jig 80. If the lower adsorption mechanism 82 is activated (ON), the suction system 82b sucks the air inside the porous body 82a. Thereby, the second film f2 is adsorbed on the upper surface of the lower jig 80.

[0089] The positioning pin 83 is a pin for positioning the first film f1 and the second film f2 relative to the lower jig 80. Specifically, insertion holes h are provided in the first film f1 and the second film f2. The positioning pin 83 positions the first film f1 and the second film f2 relative to the lower jig 80 by being inserted through the insertion holes h. In addition, the positioning pin 83 can also be referred to as a "positioning portion".

[0090] The collar 86 is a component for adjusting the gap between the upper jig 70 and the lower jig 80. The replaceable collar 86 is installed on the lower jig 80.

[0091] As Figure 1 shown, a jig window 75 is provided at the central portion of the upper jig 70. As Figure 2 shown, the jig window 75 is one size larger than the film windows 32w, 38w. The jig window 75 is configured to be able to insert the pressing member 60. Handles 74 are respectively provided on both sides of the jig window 75 on the upper jig 70.

[0092] As Figure 2 shown, the upper jig 70 is provided with an upper adsorption mechanism 72. The upper adsorption mechanism 72 includes a porous body 72a and Figure 1 the suction system 72b shown as. As Figure 2 shown, the porous body 72a is provided on the upper surface of the upper jig 70. If the upper adsorption mechanism 72 is activated, the suction system 72b sucks the air inside the porous body 72a. Thereby, the first film f1 is adsorbed on the lower surface of the upper jig 70.

[0093] Hereinafter, as Figure 6 shown, the first film f1 is disposed on the lower surface of the upper jig 70, and as Figure 7As shown, a second film f2 is disposed on the upper surface of the lower jig 80, and an adhesive A is coated on the lower surface of the first film f1 and the upper surface of the second film f2. The above state is referred to as the "first state St1". Here, the "lower surface" mentioned herein refers to the "lower surface" in the state where the upper jig 70 has been installed relative to the lower jig 80. Therefore, in this first state St1, the lower surface can also be set as the upper side and the upper jig 70 can be temporarily placed thereon. The bonding jig 100 for fuel cells is configured to be able to be set in this first state St1.

[0094] In this first state St1 of the bonding jig 100 for fuel cells, as Figure 8 shown, if the upper jig 70 is installed above the lower jig 80, the first film f1 and the second film f2 are opposed to each other with a space therebetween in the vertical direction, which is the second state St2. The bonding jig 100 for fuel cells is configured such that, from this second state St2, as Figure 9 shown, the pressing member 60 can be inserted into the jig window 75 to press the first film f1 against the second film f2.

[0095] Next, a bonding method for fuel cells using the above-described bonding jig 100 for fuel cells will be described.

[0096] First, the operator prepares Figure 2 the bonding jig 100 for fuel cells shown, and prepares the first film f1 and the second film f2. The adhesive A is coated on the lower surface of the first film f1. The first cover C1 is installed below the adhesive A. The adhesive A is coated on the portion of the upper surface of the second film f2 that faces the first film f1. The second cover C2 is installed above the adhesive A.

[0097] Next, as Figure 3 shown, the operator disposes the first film f1 on the upper surface of the lower jig 80. At this time, the positioning pin 83 is inserted through the insertion hole h of the first film f1. Thereby, the first film f1 is correctly positioned on the lower jig 80. In addition, at this time, due to the presence of the first cover C1, the adhesive A on the lower surface of the first film f1 does not adhere to the upper surface of the lower jig 80.

[0098] Next, as Figure 4 shown, the operator installs the upper jig 70 relative to the lower jig 80 from this state. At this time, the positioning shaft 88 of the lower jig 80 shown as Figure 1 is inserted through the insertion hole 78 of the upper jig 70. Thereby, as Figure 4 shown, the upper jig 70 is correctly positioned on the lower jig 80.

[0099] Next, as shown in FIG. 5, the operator starts the upper adsorption mechanism 72 from this state. As a result, the first thin film f1 disposed on the upper surface of the lower jig 80 is adsorbed on the lower surface of the upper jig 70 and is disposed on this lower surface. Keeping this state unchanged, as Figure 6 shown, the operator removes the upper jig 70 from the lower jig 80.

[0100] Next, as Figure 7 shown, the operator disposes the second thin film f2 on the upper surface of the lower jig 80 from this state. At this time, the positioning pin 83 is inserted through the insertion hole h of the second thin film f2. As a result, the second thin film f2 is correctly positioned on the lower jig 80. Next, the operator starts the lower adsorption mechanism 82. As a result, the second thin film f2 is adsorbed on the upper surface of the lower jig 80.

[0101] Next, the operator removes the first cover C1 as Figure 6 shown from this state, and removes the Figure 7 second cover C2 shown. As a result, the aforementioned first state St1 is formed. That is, a state is formed in which the first thin film f1 is disposed on the lower surface of the upper jig 70, the second thin film f2 is disposed on the upper surface of the lower jig 80, and the adhesive A is applied to the lower surface of the first thin film f1 and the upper surface of the second thin film f2.

[0102] Next, as Figure 8 shown, the operator mounts the upper jig 70 relative to the lower jig 80 from this state. At this time, the positioning shaft 88 of the lower jig 80 as Figure 1 shown is inserted through the insertion hole 78 of the upper jig 70. As a result, as Figure 8 shown, the upper jig 70 is correctly positioned on the lower jig 80. As a result, the aforementioned second state St2 is formed. That is, the first thin film f1 and the second thin film f2 are opposed to each other with a gap in the vertical direction.

[0103] Hereinafter, a specified portion in the first thin film f1 is referred to as "first specified portion f1p", and a specified portion in the second thin film f2 is referred to as "second specified portion f2p". Specifically, the first specified portion f1p is the peripheral portion of the film window 32w in the first thin film f1, and the second specified portion f2p is the portion opposed to the first specified portion f1p in the second thin film f2.

[0104] Next, as Figure 9 shown, the operator inserts the pressing member 60 into the jig window 75 from the second state St2. By this pressing member 60, the first specified portion f1p is pressed against the second specified portion f2p, and the first specified portion f1p is adhered to the second specified portion f2p using the adhesive A. As a result, the joined body F of the first thin film f1 and the second thin film f2 is formed.

[0105] Next, the operator turns off the upper adsorption mechanism 72 and the lower adsorption mechanism 82, and removes the upper jig 70 from the lower jig 80. Next, as Figure 10 shown, after the operator removes the bonded body F from the fuel cell bonding jig 100, the operator presses the bonded body F with the roller 200, so that, using the adhesive A, the portions of the first film f1 other than the first specified portion f1p and the portions of the second film f2 other than the second specified portion f2p are bonded together. Specifically, using the adhesive A, the portions of the first film f1 that are more outward than the first specified portion f1p and the portions of the second film f2 that are more outward than the second specified portion f2p are bonded together.

[0106] Thus, Figure 11 the intermediate layer 30 shown is completed. Up to this point is the fuel cell bonding method.

[0107] After that, as Figure 12 shown, the first gas diffusion layer 20 is installed on the anode side of the intermediate layer 30, and the second gas diffusion layer 40 is installed on the cathode side of the intermediate layer 30.

[0108] Hereinafter, the configuration and effects of this embodiment will be summarized.

[0109] As Figure 8 shown, by disposing the first film f1 and the second film f2 to face each other with a gap in the vertical direction, accidental bonding of these two films f1, f2 can be avoided. As Figure 9 shown, pressing the first film f1 against the second film f2 from this state can bond the two films f1, f2 together. Thus, it is easy to bond the two films f1, f2 together with high precision at the correct relative positions. Thereby, warping of the sub-gasket formed by these two protective films 32, 38 can be suppressed.

[0110] As Figure 8 shown, the fuel cell bonding jig 100 is provided with a replaceable collar 86 for adjusting the gap between the upper jig 70 and the lower jig 80. Thus, by replacing the collar 86, it is easy to dispose the first film f1 and the second film f2 to face each other with a suitable gap in the vertical direction. Thus, it is easy to bond these two films f1, f2 together with higher precision at the correct relative positions.

[0111] A jig window 75 is formed on the upper jig 70. As Figure 9 shown, the fuel cell bonding jig 100 is configured such that from Figure 8In the second state shown, the pressing member 60 can be inserted into the jig window 75 to press the first specified portion f1p against the second specified portion f2p. By inserting the pressing member 60 through the jig window 75, it is easier to fit the first specified portion f1p to the second specified portion f2p with higher precision at the correct relative position. Furthermore, afterwards, as Figure 10 shown, based on the fitted first specified portion f1p and second specified portion f2p, portions other than the first specified portion f1p and the second specified portion f2p can be fitted. Thereby, it is easier to fit the entire first film f1 and the second film f2 with higher precision at the correct relative position.

[0112] As Figure 5 shown, the upper jig 70 is provided with an upper adsorption mechanism 72 configured to be able to adsorb the first film f1. Therefore, the upper jig 70 can, by the adsorption generated by the upper adsorption mechanism 72, dispose the first film f1 on the lower surface of the upper jig 70 against gravity. Moreover, by this adsorption, it is easy to unfold the first film f1 along the lower surface of the upper jig 70 without bending. Thereby, it is also easier to fit the two films f1, f2 with higher precision at the correct relative position.

[0113] As Figure 3 shown, a positioning pin 83 for positioning the first film f1 is provided on the lower jig 80. Figure 5 The upper jig 70 shown is configured to be able to adsorb the first film f1 positioned on the upper surface of the lower jig 80 by means of this positioning pin 83. Thereby, it is easy to dispose the first film f1 at a specified position on the lower surface of the upper jig 70. It is also easy to fit the two films f1, f2 with high precision at the correct relative position.

[0114] As Figure 7 shown, a positioning pin 83 capable of positioning the second film f2 is provided on the lower jig 80. By means of this positioning pin 83, it is easy to dispose the second film f2 at a specified position on the upper surface of the lower jig 80. Thereby, it is also easy to fit the two films f1, f2 with high precision at the correct relative position.

[0115] As Figure 7 shown, the lower jig 80 is provided with a lower adsorption mechanism 82 configured to be able to adsorb the second film f2. By the adsorption generated by this lower adsorption mechanism 82, it is easy to unfold the second film f2 along the lower jig 80 without bending. Thereby, it is also easy to fit the two films f1, f2 with high precision at the correct relative position.

[0116] As Figure 1As shown, the lower jig 80 has a positioning shaft 88 that protrudes upward. The upper jig 70 is positioned horizontally relative to the lower jig 80 by this positioning shaft 88. Therefore, by means of the positioning shaft 88, it is easy to correctly align the upper jig 70 with the lower jig 80. Thus, it is also easy to bond two films f1 and f2 with high precision at the correct relative positions.

[0117] As Figure 11 shown, the first film f1 and the second film f2 each include protective films 32 and 38 that protect the edge portions of the electrolyte film 35. Therefore, the edge portions of the electrolyte film 35 can be protected by these protective films 32 and 38.

[0118] After Figure 9 removing the joined body F of the first film f1 and the second film f2 from the fuel cell bonding jig 100 shown, as Figure 10 shown, the joined body F is pressed by a roller 200, so that, using an adhesive A, the portion of the first film f1 other than the first specified portion f1p and the portion of the second film f2 other than the second specified portion f2p are bonded. Therefore, it is easy to bond the portion of the first film f1 other than the first specified portion f1p and the portion of the second film f2 other than the second specified portion f2p at a higher precision at the correct relative positions. In addition, by pressing in this way using the roller 200, warping of the sub-gasket formed by the two protective films 32 and 38 shown can be further suppressed. Figure 11 shown.

[0119] [Other Embodiments]

[0120] The embodiments shown above can be modified as follows, for example.

[0121] Figure 11 The first film f1 shown can also include a first protective film 32 and an electrolyte film 35, and the second film f2 can also include a second protective film 38. It is also possible to Figure 2 set the first film f1 shown on the upper surface of the lower jig 80 and set the second film f2 on the lower surface of the upper jig 70.

[0122] In Figure 6 and Figure 7 the first state St1 shown and Figure 8 the second state St2 shown, it is also possible that the adhesive A is coated only on one of the lower surface of the upper jig 70 and the upper surface of the lower jig 80. It is also possible to use a positioning pin 83 as a positioning portion other than a pin, such as a groove or a locking portion.

[0123] Even without Figure 5The upper adsorption mechanism 72 shown can also be provided with fasteners for fixing the first film f1 to the lower surface of the upper jig 70 in cases where the first film f1 can be fully unfolded along the lower surface of the upper jig 70, etc., instead of the upper adsorption mechanism 72. The operator can also press the first film f1 against the second film f2 by hand or the like, instead of Figure 9 the pressing member 60 shown.

[0124] In Figure 8 the upper jig 70 shown, the jig window 75 is not formed. Instead, it can also be configured to further lower the upper jig 70 from this Figure 8 shown second state St2. That is, in this case, by further lowering the upper jig 70 from the second state St2, the first film f1 and the second film f2 can be brought into contact with each other.

[0125] Reference numerals

[0126] 30: Intermediate layer

[0127] 32: First protective film (protective film)

[0128] 35: Electrolyte membrane

[0129] 38: Second protective film (protective film)

[0130] 50: Fuel cell

[0131] 60: Pressing member

[0132] 70: Upper jig

[0133] 72: Upper adsorption mechanism

[0134] 80: Lower jig

[0135] 82: Lower adsorption mechanism

[0136] 83: Positioning pin (positioning portion)

[0137] 86: Ferrule

[0138] 88: Positioning shaft

[0139] 100: Bonding jig for fuel cell

[0140] 200: Roller

[0141] A: Adhesive

[0142] f1: First film

[0143] f1p: First specified portion

[0144] f2: Second film

[0145] f2p: second specified part

[0146] St1: first state

[0147] St2: second state

Claims

1. A bonding jig for a fuel cell, which is used to bond the first film to the second film during the manufacturing stage of a fuel cell having an intermediate layer including a first film and a second film, and, The bonding jig for a fuel cell includes an upper jig configured to be able to dispose the first film on its lower surface, and a lower jig configured to be able to dispose the second film on its upper surface, and, It is configured to be able to be set in a first state, where the first film is disposed on the lower surface of the upper jig, the second film is disposed on the upper surface of the lower jig, and an adhesive is coated on at least one of the lower surface of the first film and the upper surface of the second film. In the first state, if the upper jig is mounted on the lower jig, a second state is formed in which the first film and the second film are opposed to each other with a gap in the vertical direction. And it is configured to be able to press the first film onto the second film from the second state.

2. The bonding jig for fuel cells according to claim 1, wherein, The bonding jig for a fuel cell includes a replaceable collar for adjusting the gap between the upper jig and the lower jig.

3. The bonding jig for a fuel cell according to claim 1 or 2, wherein, The bonding jig for a fuel cell includes a pressing member. A jig window into which the pressing member can be inserted is formed on the upper jig. And it is configured to insert the pressing member into the jig window from the second state to be able to press a specified portion of the first film onto a specified portion of the second film.

4. The fitting jig for a fuel cell according to claim 1 or 2, wherein, The upper jig includes an upper adsorption mechanism configured to be able to adsorb the first film, and is configured to be able to dispose the first film on the lower surface of the upper jig by the adsorption generated by the upper adsorption mechanism.

5. The bonding jig for a fuel cell according to claim 4, wherein, A positioning portion for positioning the first film is provided on the upper surface of the lower jig. The upper adsorption mechanism is configured to be able to adsorb the first film positioned by the positioning portion on the lower surface of the upper jig.

6. The bonding jig for a fuel cell according to claim 1 or 2, wherein, A positioning portion for positioning the second film is provided on the upper surface of the lower jig.

7. The bonding jig for a fuel cell according to claim 1 or 2, wherein, The lower jig includes a lower adsorption mechanism configured to be able to adsorb the second film.

8. The bonding jig for a fuel cell according to claim 1 or 2, wherein, The lower jig includes a positioning shaft protruding upward. The upper jig is positioned in the horizontal direction with respect to the lower jig by the positioning shaft.

9. The bonding jig for a fuel cell according to claim 1 or 2, wherein, The first film and the second film respectively include protective films for protecting the edge portions of the electrolyte membrane. One of the first film and the second film further includes the electrolyte membrane.

10. A bonding method for a fuel cell, which bonds the first film to the second film during the manufacturing stage of a fuel cell having an intermediate layer including a first film and a second film, and in the bonding method for a fuel cell, Prepare a jig, the jig including an upper jig configured to be able to dispose the aforementioned first film on the lower surface and a lower jig configured to be able to dispose the aforementioned second film on the upper surface. Set to a first state, the first state being that the aforementioned first film is disposed on the lower surface of the aforementioned upper jig, and the aforementioned second film is disposed on the upper surface of the aforementioned lower jig, and an adhesive is coated on at least one of the lower surface of the aforementioned first film and the upper surface of the aforementioned second film. In the aforementioned first state, by mounting the aforementioned upper jig on the aforementioned lower jig, a second state is set in which the aforementioned first film and the aforementioned second film are opposed to each other with a space therebetween in the vertical direction. By pressing the aforementioned first film against the aforementioned second film from the aforementioned second state, the aforementioned first film is bonded to the aforementioned second film.

11. The bonding method for a fuel cell according to claim 10, wherein the aforementioned jig is provided with a pressing member, a jig window into which the aforementioned pressing member can be inserted is formed on the aforementioned upper jig, by inserting the aforementioned pressing member into the aforementioned jig window from the aforementioned second state and pressing a first specified portion, which is a specified portion of the aforementioned first film, against a second specified portion, which is a specified portion of the aforementioned second film, the aforementioned first specified portion is bonded to the aforementioned second specified portion using the aforementioned adhesive.

12. The bonding method for a fuel cell according to claim 11, wherein after detaching the bonded body of the aforementioned first film and the aforementioned second film from the aforementioned jig, the bonded body is pressed using a roller, whereby portions of the aforementioned first film other than the aforementioned first specified portion and portions of the aforementioned second film other than the aforementioned second specified portion are bonded using the aforementioned adhesive.

Images