JP2007214016A - Hold pinching structure, and electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hold pinching structure capable of thinning a hold pinching plate and equalizing hold pinching force in the surface direction of a hold pinched object such as an MEA (a membrane electrode assembly) at the same time; and to provide electronic equipment having a fuel cell which has the hold pinching structure comprised of the MEA as the hold pinched object. <P>SOLUTION: A DMFC unit U1 is equipped with the MEA 10 which is a plate-like hold pinched object, a pad 41 placed on the MEA 10, a pair of hold pinching plates 51, 52 holding the MEA 10 and the pad 41 between them, and a bolt 61 holding the pair of hold pinching plates 51, 52 in the holding position on the outside than the MEA 10 as viewed from above, and the pad 41 is equipped with an outer bag 42 and fluid 43 housed in the outer bag 42. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a sandwich structure and an electronic apparatus equipped with the sandwich structure.

In recent years, direct methanol fuel cells (DMFC) and polymer electrolyte fuel cells (PEFC) have become popular as power sources for small electronic devices such as mobile phones and laptop computers. Has been developed. A fuel cell has a MEA (Membrane Electrode Assembly) in which an electrolyte membrane is sandwiched between an anode (fuel electrode) and a cathode (air electrode). A structure sandwiched between separators or the like). In order to maintain the sandwiched state in this way, the fuel cell has a sandwiching structure in which sandwiching plates are disposed on both sides of the conductive member and the sandwiching plates are fastened with bolts (patent) Reference 1).
JP-A-9-92323 (paragraph numbers 0014 to 0017, FIG. 4)

  Here, it is preferable that the entire surface of the MEA is pressed with a uniform pressure and is in good contact with the current collector plate while being uniformly sandwiched between the current collector plates. Therefore, in order to prevent bending of the sandwiching plate, the sandwiching plate is made thicker. However, when the sandwiching plates are fastened as described above, the sandwiching plate is convex with the four corners of the MEA as fulcrums. It is unavoidable to bend, and a difference occurs in the surface pressure of the MEA between the vicinity of the outer peripheral edge of the MEA and the central portion. As a result, the central portion of the MEA may not be in close contact with the current collector plate, and electrical energy may not be efficiently extracted from the MEA.

  In addition, when the fuel cell is mounted on a small electronic device such as a mobile phone or a notebook computer, the fuel cell needs to be thin. That is, the clamping plate is also required to be thin.

  Then, this invention makes it a subject to provide the clamping structure which implement | achieves simultaneously the thinning of a clamping plate and the uniform clamping force in the surface direction of to-be-clamped bodies, such as MEA. And it makes it a subject to provide an electronic device provided with the fuel cell which is a clamping structure which uses MEA as a to-be-clamped body.

  As means for solving the above problems, the present invention includes a plate-shaped sandwiched body, a pad overlaid on the sandwiched body, a pair of sandwiching plates that sandwich the sandwiched body and the pad, and a plan view. A clamping means for clamping the pair of clamping plates at a clamping position outside the clamped body, and the pad includes an outer bag and a fluid contained in the outer bag. Is a sandwiching structure. Further, the sandwiching body structure is characterized in that an intermediate plate is provided between the sandwiched body and the pad.

According to such a sandwiching body structure, when the sandwiching plates are sandwiched by the sandwiching means, the pair of sandwiching plates sandwich the sandwiched body via the pads, and the sandwiching plates may bend. Then, the pad including the outer bag and the fluid accommodated in the outer bag is deformed along this deflection. Thereby, a clearance gap is not formed in the contact surface of a pad and a clamping plate, and the contact surface of a pad and a to-be-clamped body, and the favorable adhesiveness of a pad and a clamping plate and a pad and a to-be-clamped body is ensured. And since the fluid is sealed in the pad, the force with which the pad sandwiched in this way pushes the object to be held, that is, the pressure generated on each contact surface is made uniform in the surface direction of the object to be held. Can do.
In this way, even if the sandwiching plate is bent, the sandwiched body can be sandwiched uniformly, so that the sandwiching plate can be thinned. As a result, the sandwiching structure such as the fuel cell can be thinned.

  Further, when the intermediate plate is provided between the sandwiched body and the pad, since the pad is deformed along the bending of the sandwiching plate as described above, the intermediate plate does not bend. Thus, no gap is formed between the intermediate plate and the sandwiched body, and good adhesion between the intermediate plate and the sandwiched body is ensured.

  ADVANTAGE OF THE INVENTION According to this invention, the clamping structure which implement | achieves simultaneously the thinning of a clamping plate and the uniform clamping force in the surface direction of to-be-clamped bodies, such as MEA, can be provided.

  Embodiments of the present invention will be described below with reference to the drawings as appropriate.

<< First Embodiment >>
A first embodiment of the present invention will be described with reference to FIGS. Here, the first embodiment exemplifies a case where the sandwiched body is an MEA, the intermediate plate is a current collector plate, and the sandwiching structure is a DMFC unit (fuel cell unit).

<Configuration of DMFC unit>
The DMFC unit U1 according to the first embodiment shown in FIG. 1 is a plate-like direct methanol fuel cell that is used as an external power source of a portable terminal (electronic device) such as a notebook personal computer. As shown in FIG. 2, the DMFC unit U1 includes an MEA 10, a pair of current collecting plates 21 (intermediate plates) and current collecting plates 22, a fuel tank 31, a pad 41, a pair of sandwiching plates 51 and a sandwiching plate 52. And four bolts 61 (clamping means).

[MEA]
As shown in FIGS. 3 and 4, the MEA 10 includes an electrolyte membrane 11, an anode 12 (fuel electrode), and a cathode 13 (air electrode). The electrolyte membrane 11 is sandwiched between the anode 12 and the cathode 13. It is. The electrolyte membrane 11 is larger than the anode 12 and the cathode 13 in a plan view, and the outer peripheral edges of the anode 12 and the cathode 13 are located on the inner side (center side in the surface direction) than the outer peripheral edge of the electrolyte membrane 11. ing. Such an MEA 10 is configured to generate power by supplying an aqueous methanol solution (liquid fuel) to the anode 12 and air containing oxygen to the cathode 13.
3 shows the DMFC unit U1 before assembly, and FIG. 4 shows the assembly after assembly. Further, for easy understanding, the bending of the sandwiching plate 51 after assembly is shown to be larger.

The electrolyte membrane 11 is a monovalent cation exchange membrane for selectively transporting protons (H ⁺ ) generated at the anode 12 to the cathode 13. Examples of the electrolyte membrane 11 include a perfluorocarbon sulfonic acid (PFS) resin film, a copolymer film of a trifluorostyrene derivative, a polybenzimidazole film impregnated with phosphoric acid, an aromatic polyether ketone sulfonic acid film, It can be used by appropriately selecting from a film made of PSSA-PVA (polystyrene sulfonate polyvinyl alcohol copolymer), PSSA-EVOH (polystyrene sulfonate ethylene vinyl alcohol copolymer) or the like.

  The anode 12 is an electrode that oxidizes methanol as a fuel to generate electrons and protons. As such an anode 12, for example, platinum (Pt) fine particles, iron (Fe) fine particles, nickel (Ni) as a catalyst on the surface of the conductive member such as carbon paper or carbon cloth on the side of the electrolyte membrane 11 is used. An alloy of platinum and a transition metal such as cobalt (Co) or ruthenium (Ru), and those carrying fine particles of the oxide are used.

  The cathode 13 is an electrode that generates water by reacting electrons that have passed through the external circuit from the anode 12 and protons that have been generated in the anode 12 and then moved through the electrolyte membrane 11 to reach the cathode 13. As such a cathode 13, as in the case of the anode 12, for example, a carbon paper having a catalyst such as platinum supported on the surface on the electrolyte membrane 11 side is used.

[Current collector]
The current collecting plate 21 and the current collecting plate 22 are plates for efficiently extracting electric energy based on the potential difference generated in the MEA 10, and are made of a material having conductivity and corrosion resistance (for example, a metal such as copper or titanium). Is formed. The current collecting plate 21 and the current collecting plate 22 sandwich the MEA 10. More specifically, the current collector plate 21 (intermediate plate) is disposed between the MEA 10 and the pad 41.
Moreover, the thickness of the current collector plate 21 and the current collector plate 22 is such a thickness that the flexibility (flexibility) is ensured. The current collector plate 21 is the cathode 13, and the current collector plate 22 is the anode 12. Are in good contact with each other (see FIG. 4).

A plurality of air flow holes 21 a are formed in the current collector plate 21. Air containing oxygen is supplied to the cathode 13 through an air circulation hole 51a, an air circulation hole 41a, and an air circulation hole 21a, which will be described later. Further, the current collector plate 21 includes a plus terminal 21b.
Similarly, a plurality of fuel flow holes 22 a are formed in the current collector plate 22. The aqueous methanol solution is supplied to the anode 12 through the fuel circulation hole 22a. Further, the current collector plate 22 includes a minus terminal 22b.

  Further, the seal member 14 (O-ring) is provided at a proper position so that the aqueous methanol solution supplied to the anode 12 does not leak outside the DMFC unit U1.

<Fuel tank>
The fuel tank 31 has a plate shape and is a secondary tank in which a methanol aqueous solution supplied to the anode 12 from an external fuel cartridge (not shown) in which a methanol aqueous solution is stored is temporarily stored. In the fuel tank 31, a slit-shaped fuel flow passage 31a is formed so that the methanol aqueous solution is supplied to the entire surface of the anode 12 of the MEA 10. Then, when the methanol aqueous solution is supplied through the fuel intake pipe 31c attached at an appropriate place, the fuel flow passage 31a is filled with the methanol aqueous solution and supplied to the anode 12 through the fuel circulation hole 22a of the current collector plate 22. It has come to be.

The gas-liquid separation membrane 32 is a separation membrane that selectively permeates carbon dioxide, and is a porous membrane made of polytetrafluoroethylene or the like as a base material, and is superimposed on the lower surface side of the fuel tank 31. Thereby, the carbon dioxide generated at the anode 12 by power generation is discharged to the outside through the gas-liquid separation membrane 32 and the carbon dioxide discharge holes 52a of the sandwiching plate 52 described later.
In addition, what formed such a gas-liquid separation film | membrane 32 in the shape of a tube may be arrange | positioned in the fuel flow path 31a, and you may make it accelerate | stimulate discharge | emission of a carbon dioxide.

<Pad>
When the MEA 10 is sandwiched between the sandwiching plates 51 and 52 via the pad 41 or the like, the pad 41 is deformed following the deflecting sandwiching plate 51 even if the sandwiching plate 51 having low rigidity is bent. This is for contacting the plate 21 and pressing the current collecting plate 21 uniformly (see FIGS. 3 and 4). Such a pad 41 includes an outer bag 42 and an appropriate amount of fluid 43 enclosed (accommodated) in the outer bag 42.

As the outer bag 42, for example, a plastic material such as polypropylene molded into a bag shape can be used. Further, the outer bag 42 has an appropriate strength so that the fluid 43 does not leak.
As the fluid 43, gas (air etc.), liquid (water etc.), a gel-like body, etc. can be used. In particular, the pad 41 itself is compressed by the pressing force from the sandwiching plate 51, and the fluid 43 is a liquid that hardly changes in volume in order to prevent a reduction in the force with which the pad 41 presses the current collector plate 21 (the force that sandwiches the MEA 10). It is desirable to select.

  The size of the pad 41 in plan view is set to be approximately the same as that of the MEA 10, and the entire surface of the MEA 10 can be pressed via the current collector plate 21. The pad 41 has a plurality of air circulation holes 41 a, and the plurality of air circulation holes 41 a and the plurality of air circulation holes 51 a of the clamping plate 51 and the plurality of current collector plates 21 in the plan view. It overlaps with the air circulation hole 21a.

<Clamping plate>
The sandwiching plate 51 and the sandwiching plate 52 are plates that sandwich the MEA 10, the current collector plate 21, the current collector plate 22, the fuel tank 31, and the pad 41 from both outsides in order to maintain the overlapping state. The clamping plate 51 and the clamping plate 52 are fastened by a bolt 61 (clamping means), thereby sandwiching the seal member 14 on the electrolyte membrane 11 outside the outer peripheral edge of the anode 12. Note that the clamping positions of the clamping plates 51 and 52 by the bolts 61 are outside the MEA 10 in a plan view.

  Of the sandwiching plate 51 and the sandwiching plate 52, the sandwiching plate 51 on the side where the pad 41 is disposed has relatively lower rigidity than the sandwiching plate 52 on the side where the pad 41 is not disposed as viewed from the MEA 10. . Here, as a method for reducing the rigidity, for example, a method of reducing the thickness of the sandwiching plate 51, a method of forming the sandwiching plate 51 from a low-strength resin, or forming slits, grooves, or the like in the sandwiching plate 51. It is possible to adopt a method, a method of increasing the rigidity of carbon fiber or the like by mixing it with the holding plate 52 on the opposite side, which has high strength.

  Accordingly, when the DMFC unit U1 is assembled and the clamping plate 51 and the clamping plate 52 are fastened by the bolt 61, the clamping plate 51 on the pad 41 side is more easily bent than the clamping plate 52. Here, even if the clamping plate 51 is bent in this way, as described above, the pad 41 is deformed following the bending while maintaining the adhesiveness with the current collector plate 21, so that the clamping plate 51 changes to the MEA 10. The acting force is uniformly transmitted to the current collecting plate 21 in the surface direction, and as a result, the current collecting plate 21 is in good contact with the cathode 13 of the MEA 10.

  The sandwiching plate 51 has a plurality of air circulation holes 51 a corresponding to the plurality of air circulation holes 21 a formed in the current collector plate 21. The sandwiching plate 52 is formed with a plurality of carbon dioxide discharge holes 52a for discharging carbon dioxide generated at the anode 12 by power generation to the outside.

<Assembly of DMFC unit>
Next, assembly of such a DMFC unit U1 will be described.
As shown in FIG. 2, the sandwiching plate 51, the pad 41, the current collector plate 21, the MEA 10, the current collector plate 22, the fuel tank 31, the gas-liquid separation membrane 32, and the sandwiching plate 52 are arranged in this order from top to bottom. Then, these are overlapped (see FIG. 3), and the clamping plate 51 and the clamping plate 52 are fastened with the bolts 61.

  Here, when the clamping plate 51 is bent (see FIG. 4), the pad 41 is deformed following the bending. Since the inside of the pad 41 is a fluid that hardly changes in volume, the clamping force received by the pad 41 from the clamping plate 51 is uniformly transmitted to the current collecting plate 21 in the surface direction. As a result, the current collector plate 21 sandwiches the MEA 10 with a uniform clamping force in the surface direction. That is, the current collector plate 21 uniformly pushes the cathode 13 of the MEA 10 toward the electrolyte membrane 11 in the surface direction. Thereby, the current collecting plate 22 and the cathode 13 have uniform adhesion in the surface direction.

  On the other hand, the sandwiching plate 52 having high rigidity with respect to the sandwiching plate 51 hardly bends, and the highly rigid fuel tank 31 is interposed between the sandwiching plate 52 and the current collector plate 22. The clamping force is uniformly transmitted to the current collector plate 22 in the surface direction via the fuel tank 31. Then, the current collector plate 22 is pushed uniformly toward the electrolyte membrane 11 side with the anode 12 of the MEA 10 in the surface direction, and the current collector plate 22 and the anode 12 are in good contact.

<Operation of DMFC unit>
Next, the operation of the assembled DMFC unit U1 will be described.

First, the anode 12 side of the DMFC unit U1 will be described.
A methanol aqueous solution (methanol concentration is, for example, 10% by mass) is supplied from an external fuel cartridge (not shown) to the fuel flow passage 31a of the fuel tank 31 through the fuel intake pipe 31c. The aqueous methanol solution supplied to the fuel flow passage 31a is supplied to the entire surface of the anode 12 through the fuel circulation hole 22a. In the anode 12 supplied with the aqueous methanol solution, methanol and water in the presence of a supported catalyst such as platinum as shown in the following formula (1) in accordance with the power requirement of the portable terminal connected to the DMFC unit U1. React with each other to generate protons (H ⁺ ), carbon dioxide (CO ₂ ), and electrons (e ⁻ ). Next, protons (H ⁺ ) move in the electrolyte membrane 11 toward the cathode 13 using the concentration gradient as a driving force.

CH ₃ OH + H ₂ O → CO ₂ + 6H ⁺ + 6e ⁻ (1)

  On the other hand, as shown in the equation (1), the carbon dioxide generated at the anode 12 passes from the anode 12 through the fuel circulation hole 22a to the fuel flow passage 31a, and then passes through the gas-liquid separation membrane 32. Discharged to the outside.

Next, the cathode 13 side of the DMFC unit U1 will be described.
Air containing external oxygen is supplied to the cathode 13 through the air circulation hole 51a, the air circulation hole 41a, and the air circulation hole 21a. At the cathode 13, oxygen in the air, protons (H ⁺ ) that have moved through the electrolyte membrane 11, and electrons (e ⁻ ) that have passed through an external portable terminal (external load) react to each other, and the following formula (2 ), Water (water vapor) is generated. Next, the water is discharged to the outside through the air circulation hole 21a, the air circulation hole 41a, and the air circulation hole 51a.

O ₂ + 4H ⁺ + 4e ⁻ → 2H ₂ O (2)

  Here, as described above, since (1) the current collector plate 21 and the cathode 13 and (2) the anode 12 and the current collector plate 22 are in good contact with each other, the efficiency is determined based on the potential difference generated in the MEA 10. Electrical energy can be extracted. Further, since the sandwiching plate 51 may be bent in this way, the sandwiching plate 51 can be thinned and the DMFC unit U1 can be thinned.

<< Second Embodiment >>
Next, a second embodiment of the present invention will be described with reference to FIGS. Only parts different from the DMFC unit U1 according to the first embodiment will be described.
As shown in FIGS. 5 to 7, in the DMFC unit U <b> 2 according to the second embodiment, the pad 41 is disposed between the current collector plate 22 and the fuel tank 31.

6 and 7, in such an arrangement, when the MEA 10 is sandwiched between the sandwiching plate 51 and the sandwiching plate 52 and the DMFC unit U2 is assembled, the opposite side of the highly rigid fuel tank 31 is installed. When the clamping plate 51 is bent, the pad 41 is deformed following the bending.
As a result, the MEA 10 and the current collector plates 21 and 22 between the pad 41 and the sandwiching plate 51 bend. However, since the MEA 10 and the current collector plates 21 and 22 bend along the deflection of the sandwich plate 51, the MEA 10 and the current collector plates 21 and 22 are bent. Adhesion with the electric plate 21 and adhesion between the MEA 10 and the current collector plate 22 are ensured. As a result, electric energy can be efficiently extracted from the MEA 10 that generates power via the current collector plates 21 and 22.

<< Third Embodiment >>
Next, a third embodiment of the present invention will be described with reference to FIGS.
As shown in FIGS. 8 to 10, the DMFC unit U <b> 3 according to the third embodiment includes a current collecting pad 44 and a current collecting pad tank 46.

[Collector pad]
The current collection pad 44 is disposed between the MEA 10 and the sandwiching plate 51 and has the functions of the current collection plate 21 and the pad 41 according to the first embodiment. Specifically, as shown in FIGS. 9 and 10, the current collection pad 44 includes an outer bag 45 and a fluid 43 sealed therein. The outer bag 45 has, for example, a conductive layer made of a conductive polymer on the surface of a plastic material such as polypropylene formed into a bag shape, has conductivity, and is electrically connected to the cathode 13. Yes. The current collecting pad 44 includes four slit-like air circulation holes 44a and a plus terminal 44b.

[Current collection pad tank]
The current collection pad tank 46 is disposed between the MEA 10 and the gas-liquid separation membrane 32 (the clamping plate 52), and has the functions of the current collection plate 22, the pad 41, and the fuel tank 31 according to the second embodiment. Yes. Specifically, the current collection pad tank 46 includes an outer bag 47 having conductivity similar to the outer bag 45 and a fluid 43 sealed therein. The current collecting pad tank 46 includes four slit-like fuel flow passages 46a, a minus terminal 46b, and a fuel intake pipe 46c. The four slit-like fuel flow passages 46a and the four slit-like air circulation holes 44a are arranged so as to be orthogonal to each other in plan view.
The number of fuel flow passages 46a may be different from the number of air circulation holes 44a.

  9 and 10, when the DMFC unit U3 according to the third embodiment is assembled in such an arrangement and the sandwiching plate 51 and the sandwiching plate 52 are bent, the current collecting pad 44 is connected to the cathode 13. It deforms following the bending of the sandwiching plate 51 while being in close contact. On the other hand, the current collecting pad tank 46 is deformed following the bending of the sandwiching plate 52 while being in close contact with the anode 12. As a result, electric energy can be efficiently extracted from the MEA 10 that generates power via the current collecting pad 44 and the current collecting pad tank 46.

  As mentioned above, although preferred embodiment of this invention was described, this invention is not limited to each said embodiment, You may combine the structure of each embodiment in the range which does not deviate from the meaning of this invention. It may be changed as follows.

  In the first embodiment described above, the case where the object to be sandwiched is the MEA 10 has been described. However, the body to be sandwiched is not limited to this, and any member may be used as long as it is sandwiched. In addition, although the case where the sandwiching structure is the DMFC unit U1 has been described, the sandwiching structure is not limited to this and may be anything.

  In the first embodiment described above, the configuration in which the MEA 10 is disposed on the upper side (one side) of the fuel tank 31 has been described. However, for example, the MEA 10, the current collector plate 21, and the pad 41 are disposed on both sides of the fuel tank 31. The anode 12 of each MEA 10 may share the fuel tank 31.

  In the first embodiment described above, the case where the DMFC unit U1 is an external power source of the mobile terminal has been described. However, as shown in FIG. 11, the DMFC unit U1 includes a fuel cartridge CR that supplies an aqueous methanol solution to the notebook. A configuration may be adopted in which the notebook personal computer PC is mounted on a personal computer PC (electronic device) and is operated by electric power from the DMFC unit U1 (MEA 10).

  In the third embodiment described above, as shown in FIG. 8, the four air circulation holes 44a of the current collection pad 44 and the four fuel flow passages 46a of the current collection pad tank 46 are orthogonal to each other in plan view. However, for example, a parallel arrangement may be used. In addition, when arrange | positioning in parallel in this way, it is preferable to make the number of the air circulation holes 44a and the number of the fuel flow passages 46a correspond. This is because it is possible to prevent the MEA 10 from being bent in a wave shape if matched in this way.

  In the first embodiment described above, as shown in FIG. 2, the current collector plate 21 is a plate member in which a plurality of air circulation holes 21 a are formed. However, the flexibility and the adhesion to the cathode 13 are enhanced. Accordingly, the current collector plate 23 shown in FIG. 12 or the current collector plate 24 shown in FIG. 13 may be used. The current collecting plate 23 shown in FIG. 12 has a comb shape in which a portion corresponding to the air circulation hole 51a of the sandwiching plate 51 is cut out, and includes a minus terminal 23b. The current collector plate 24 shown in FIG. 13 has a meandering shape so as to avoid a portion corresponding to the air circulation hole 51a, and includes a minus terminal 24b.

  In the first embodiment described above, the current collector plate 21 exemplifies a configuration corresponding to the “intermediate plate” in the claims, but, for example, an intermediate plate is provided between the current collector plate 21 and the pad 41. It may be configured.

  In the second embodiment described above, as shown in FIGS. 5 to 7, the pad 41 is configured to overlap the fuel tank 31. For example, a part of the pad 41 is fitted in the fuel flow passage 31 a. It may be configured to get stuck. Similarly, about 1st Embodiment, the structure which a part of pad 41 fits in the air circulation hole 51a of the clamping plate 51 may be sufficient.

It is a perspective view of the DMFC unit which concerns on 1st Embodiment. It is a disassembled perspective view of the DMFC unit which concerns on 1st Embodiment. It is XX sectional drawing of the DMFC unit which concerns on 1st Embodiment shown in FIG. 1, and shows before an assembly | attachment. It is XX sectional drawing of the DMFC unit which concerns on 1st Embodiment shown in FIG. 1, and shows after an assembly | attachment. It is a disassembled perspective view of the DMFC unit which concerns on 2nd Embodiment. It is sectional drawing of the DMFC unit which concerns on 2nd Embodiment, and shows before an assembly | attachment. It is sectional drawing of the DMFC unit which concerns on 2nd Embodiment, and shows after an assembly | attachment. It is a disassembled perspective view of the DMFC unit which concerns on 3rd Embodiment. It is sectional drawing of the DMFC unit which concerns on 3rd Embodiment, and shows before an assembly | attachment. It is sectional drawing of the DMFC unit which concerns on 3rd Embodiment, and shows after an assembly | attachment. 1 is a perspective view of a notebook computer equipped with a DMFC unit according to a first embodiment. It is a top view of the current collection board concerning a modification. It is a top view of the current collection board concerning a modification.

Explanation of symbols

PC notebook computer (electronic equipment)
U1 DMFC unit (clamping structure)
10 MEA
11 Electrolyte membrane 12 Anode 13 Cathode 21 Current collector (intermediate plate)
22 current collecting plate 31 fuel tank 32 gas-liquid separation membrane 41 pad 42 outer bag 43 fluid 51, 52 clamping plate 61 bolt (clamping means)

Claims (6)

A plate-shaped sandwiched body;
A pad overlaid on the sandwiched body;
A pair of clamping plates that sandwich the sandwiched body and the pad;
Clamping means for clamping the pair of clamping plates at a clamping position outside the clamped body in plan view;
With
The pad structure includes an outer bag and a fluid contained in the outer bag.   The sandwiching structure according to claim 1, wherein the sandwiching plate on the side where the pad is disposed among the pair of sandwiching plates has lower rigidity than the other sandwiching plates.   The clamping structure according to claim 1 or 2, further comprising an intermediate plate between the clamped body and the pad.   4. The membrane electrode assembly according to claim 1, wherein the sandwiched body is configured by sandwiching an electrolyte membrane between a pair of electrodes, and is a membrane electrode assembly that generates electric power when supplied with liquid fuel. The sandwich structure according to the item. A current collector plate that is an intermediate plate is provided between the sandwiched body and the pad,
The sandwiched body according to claim 1 or 2, wherein the sandwiched body is a membrane electrode assembly that is configured by sandwiching an electrolyte membrane between a pair of electrodes and that generates electric power when liquid fuel is supplied. Structure. The holding structure according to claim 4 or claim 5,
An electronic device that is operated by electric power from the membrane electrode assembly that generates electric power.

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