JP2008243702A - Fuel cell - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fuel cell capable of removing water generated on a surface of a cathode. <P>SOLUTION: When a display member is opened in a cell phone, a shutter member 40 is slid from a protecting position to an open position. Therefore, a water absorption block 26 is moved toward an abutting part 38 while in contact with the surface of the cathode 18 in the fuel cell 12 and the water pooled on the surface of the cathode 18 is absorbed and removed. The water absorption block 26 is moved along the surface of the cathode 18 by only opening and closing the cell phone, so that the water generated on the surface of the cathode 18 can be absorbed and removed. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a fuel cell having a mechanism for removing water generated on the surface of a cathode.

  A natural convection type portable fuel cell includes an anode that is a fuel electrode, a cathode that is an oxidant electrode, and a solid polymer film provided between the anode, hydrogen as fuel at the anode, and hydrogen at the cathode. Oxygen as an oxidant is supplied, and the fuel and oxygen undergo an electrochemical reaction through the solid polymer film to generate electricity.

  Hydrogen and oxygen react at the cathode of such a fuel cell, and water is generated on the surface of the cathode.

  When the generated water stays on the surface of the cathode, it becomes difficult for the cathode to take in oxygen, and the power generation efficiency of the fuel cell decreases.

Therefore, a water absorbing sheet is provided in the fuel cell, one end of the water absorbing sheet is disposed at the end of the cathode, and water generated at the cathode is absorbed from one end of the water absorbing sheet using capillary action, and the other end of the water absorbing sheet is disposed. Fuel cells that are discharged from the outside have been proposed. (Patent Document 1)
JP 2004-165002 A

  However, according to this fuel cell, since water is absorbed from the end of the cathode, water generated on the surface of the cathode (particularly the central portion) cannot be sufficiently removed, and the fuel cell Output may be reduced.

  An object of the present invention is to remove the water generated on the surface of the cathode in consideration of the above facts.

  A fuel cell according to claim 1 of the present invention is a fuel cell comprising: an anode that is a fuel electrode; a cathode that is an oxidant electrode; and a solid polymer membrane disposed between the anode and the cathode. A water-absorbing member that absorbs water, and a moving means that moves the water-absorbing member along the surface of the cathode.

  According to the above configuration, hydrogen as a fuel is supplied to the anode, oxygen as an oxidant is supplied to the cathode, and the fuel cell generates electric power by causing an electrochemical reaction through the solid polymer film. .

  Here, water is generated on the surface of the cathode by an electrochemical reaction between the fuel and oxygen.

  However, since the moving means moves the water absorbing member along the surface of the cathode, the water generated on the surface of the cathode can be absorbed and removed.

  A fuel cell according to a second aspect of the present invention is the fuel cell according to the first aspect, wherein the fuel cell is provided in an electronic device having an opening / closing part, and the moving means is fixed at one end side to a main body of the electronic device, The other end side is slidably attached to the opening / closing portion, and is an opening / closing operation interlocking member that converts an opening / closing operation of the opening / closing portion into a movement operation of the water absorbing member.

  According to the above configuration, the fuel battery cell is provided in the electronic device having the opening / closing part.

  The opening / closing operation interlocking member has one end fixed to the body of the electronic device and the other end slidably attached to the opening / closing portion, and converts the opening / closing operation of the opening / closing portion into a movement operation of the water absorbing member. That is, by opening and closing the opening and closing part of the electronic device, the opening and closing operation interlocking member converts the opening and closing operation of the opening and closing part into a movement operation of the water absorbing member, and moves the water absorbing member along the surface of the cathode.

  Thereby, the water produced | generated on the surface of the cathode can be removed.

  A fuel cell according to a third aspect of the present invention is the fuel cell according to the first aspect, wherein the moving means guides the water absorbing member along the surface of the cathode, and the water absorbing member along the guide means. And a manual operation member that is manually moved.

  According to the said structure, the water absorption member guided by a guide means is moved manually along the surface of a cathode using a manual operation member. For this reason, the water produced | generated on the surface of the cathode can be removed suitably.

  A fuel cell according to a fourth aspect of the present invention is the fuel cell according to the first aspect, comprising: a fuel cartridge that supplies fuel to the anode; and a storage portion that stores the fuel cartridge, and the moving means includes the storage portion. And a slide member connected to the water absorbing member, and an operation converting means for changing the detaching operation of the fuel cartridge to the storage portion into the moving operation of the slide member. .

  According to the above configuration, the fuel cartridge for supplying fuel to the anode is provided, and this fuel cartridge is stored in the storage unit.

  Further, a slide member connected to the water absorbing member is movably disposed in the storage portion, and the operation converting means changes the operation of detaching the fuel cartridge from the storage portion to the movement operation of the slide member.

  That is, when the fuel cartridge is detached from the storage portion, the operation converting means changes the detaching operation into the moving operation of the slide member, and the absorbing member connected to the slide member is moved to the surface of the cathode by moving the slide member. Move along.

  In this way, water generated on the surface of the cathode can be removed by detaching the fuel cartridge.

  The fuel cell according to claim 5 of the present invention is the fuel cell according to claim 1, wherein the water absorbing member is a water absorbing block, and the moving means slides the water absorbing block along the surface of the cathode. And

  According to the above-described configuration, the water generated on the surface of the cathode can be removed by the moving means sliding the water absorption block along the surface of the cathode.

  A fuel cell according to a sixth aspect of the present invention is the fuel cell according to the first aspect, wherein the water absorbing member is a water absorbing sheet wound around a shaft, and the moving means moves along the surface of the cathode. It is characterized by unwinding and winding.

  According to the said structure, the water produced | generated on the surface of the cathode can be removed by unwinding and winding up the water absorbing sheet wound around the shaft by the moving means.

  A fuel cell according to a seventh aspect of the present invention is the fuel cell according to the first aspect, wherein the water absorbing member is a water absorbing strip sheet that is folded and accommodated, and the moving means moves along the surface of the cathode. It is characterized by developing and storing strip sheets.

  According to the above configuration, the water generated on the surface of the cathode can be removed by developing and storing the water-absorbing strip sheet in which the moving means is folded and stored along the surface of the cathode.

  A fuel cell according to an eighth aspect of the present invention is the fuel cell according to the first aspect, wherein the water absorbing member is a water absorbing roll, and the moving means rolls the water absorbing roll along the surface of the cathode. And

  According to the said structure, the water produced | generated on the surface of a cathode can be removed because a moving means rolls a water absorption roll along the surface of a cathode.

  A fuel cell according to a ninth aspect of the present invention is the fuel cell according to any one of the fifth to eighth aspects, further comprising a timing control unit that moves the moving means every predetermined power generation time.

  According to the said structure, a timing control part can move a moving means for every predetermined power generation time, and can wipe off the water of the surface of a cathode regularly.

  A fuel cell according to a tenth aspect of the present invention is the fuel cell according to any one of the fifth to eighth aspects, further comprising a timing control unit that moves the moving means for each predetermined power generation amount.

  According to the said structure, a timing control part can move a moving means for every predetermined electric power generation amount, and can wipe off the water produced | generated according to the electric power generation amount efficiently.

  A fuel cell according to an eleventh aspect of the present invention is the fuel cell according to any one of the fifth to eighth aspects, further comprising a timing control unit that moves the moving means when the voltage of the fuel cell becomes equal to or lower than a predetermined voltage. It is characterized by that.

  According to the above configuration, since the timing control unit moves the moving means when the voltage of the fuel cell becomes equal to or lower than the predetermined voltage, the moving frequency can be reduced.

  A fuel cell according to a twelfth aspect of the present invention is the fuel cell according to any one of the fifth to eighth aspects, further comprising a timing control unit that moves the moving means when the voltage fluctuation of the fuel cell exceeds a predetermined ratio. It is characterized by that.

  According to the above configuration, since the timing control means moves the moving means when the voltage fluctuation of the fuel cell exceeds a predetermined ratio, the moving frequency is low.

  A fuel cell according to a thirteenth aspect of the present invention is the fuel cell according to any one of the fifth to eighth aspects, further comprising a timing control unit that moves the moving means when the predetermined current-voltage characteristics are not satisfied. To do.

  According to the above configuration, when the timing control unit does not satisfy the predetermined current-voltage characteristic, the moving unit is moved, so that the moving frequency is low.

  A fuel cell according to a fourteenth aspect of the present invention is the fuel cell according to any one of the first to thirteenth aspects, wherein a water absorption area of the water absorbing member is smaller than a surface area of the cathode.

  According to the above configuration, since the water absorption area of the water absorption member is smaller than the surface area of the cathode, the water absorption member that moves along the surface of the cathode does not cover the entire surface of the cathode at one time. For this reason, the cathode always takes in oxygen without being disturbed by the water absorbing member, and the fuel cell can generate power stably.

  A fuel cell according to a fifteenth aspect of the present invention is the fuel cell according to any one of the first to fourteenth aspects, wherein a protective member capable of flowing out water to the surface is provided on the surface of the cathode.

  According to the above configuration, the protective member capable of flowing out water to the surface is provided on the surface of the cathode. For this reason, since the water absorbing member contacts the protective member and absorbs water, the cathode surface is not damaged.

  A fuel cell according to a sixteenth aspect of the present invention is the fuel cell according to any one of the first to fifteenth aspects, wherein the squeezing means for squeezing the water absorbed by the water absorbing member, and the recovery for collecting the water squeezed by the squeezing means. Means.

  According to the above configuration, the squeeze means squeezes the water absorbed by the water absorbing member, and the recovery means recovers the water squeezed by the squeeze means.

  For this reason, the water absorbing member can always sufficiently absorb the water on the surface of the cathode.

  According to the present invention, water generated on the surface of the cathode can be removed.

  A mobile phone employing the fuel cell according to the first embodiment of the present invention will be described with reference to FIGS.

  As shown in FIGS. 4A and 4B, the mobile phone 30 includes a plate-like operation member 32 (main body) including various operation keys such as a power switch and a microphone 31, and information from the operation member 32. Based on this, a display screen 34A for displaying the information and the like, a display member 34 (opening / closing part) having a speaker 33, and a hinge member 36 for holding the display member 34 on the operation member 32 so as to be openable and closable are provided.

  A fuel cell 10 that supplies power to the mobile phone 30 is attached to the back surface of the display member 34 (the surface on which the display screen 34 </ b> A is not provided). Further, in order to protect the fuel cell 10, a thin plate-like shutter member 40 is provided so as to cover the fuel cell 10 from the outside. Further, an abutting portion 38 with which the shutter member 40 abuts is provided at the end of the display member 34. Further, the shutter member 40 is provided with a rectangular opening 42 for supplying air (oxygen) as an oxidant to the fuel cell 10. Details of the shutter member 40 will be described later.

  As shown in FIG. 3A, when the mobile phone 30 is not in use, the user turns the display member 34 around the hinge member 36 and closes it on the operation member 32 to close the mobile phone 30. It can be in a non-use state. On the other hand, as shown in FIG. 3B, when the mobile phone 30 is used, the user turns the display member 34 around the hinge member 36 to open it, thereby making the mobile phone 30 usable. be able to. The hinge member 36 is provided with a hinge stopper (not shown) so that the display member 34 is held at the expanded angle shown in FIG.

  The shutter member 40 is a flexible metal plate, and one end portion 40 </ b> A of the shutter member 40 is fixed to the back surface of the operation member 32. Further, rail members (not shown) that allow the shutter member 40 to slide along the plate surface of the fuel cell 10 are provided at both end portions of the shutter member 40.

  With this configuration, the shutter member 40 is bent or substantially linear with the opening / closing operation of the mobile phone 30, and the other end 40 </ b> B slides along the surface of the fuel cell 10.

  As shown in FIGS. 1A and 3A, when the mobile phone 30 is not in use, the other end 40B of the shutter member 40 is separated from the abutting portion 38, and the shutter member 40 is a fuel. The fuel cell 12 which will be described later provided in the battery 10 is covered and slid to a protection position for protecting the fuel cell 12.

  On the other hand, as shown in FIGS. 1 (C) and 3 (B), when the mobile phone 30 is in use, the other end portion 40B of the shutter member 40 slides until it comes into contact with the abutting portion 38, The opening 42 faces the fuel battery cell 12 and can supply oxygen.

  A fuel cartridge 22 that supplies fuel to the fuel battery cell 12 via a supply pipe (not shown) is provided next to the fuel battery cell 12.

  Next, the configuration of the fuel battery cell 12 will be described.

  As shown in FIG. 2, the fuel battery cell 12 has one or more membrane-electrode assemblies (MEAs) 14.

  The membrane-electrode assembly 14 includes an anode 16 as a fuel electrode, a cathode 18 as an oxidant electrode, and a solid polymer membrane 20 disposed between the anode 16 and the cathode 18.

  The solid polymer film 20 has a role of separating the anode 16 and the cathode 18 and moving hydrogen ions between them. Therefore, the solid polymer film 20 is preferably a film having high hydrogen ion conductivity. Further, the solid polymer film 20 is preferably chemically stable and has high mechanical strength. As a material constituting the solid polymer film 20, an organic polymer having a strong acid group such as a sulfone group and a phosphate group and a polar group such as a weak acid group such as a carboxyl group is preferably used. Examples of such organic polymers include aromatic condensed polymers such as sulfonated poly (4-phenoxybenzoyl-1,4-phenylene) and alkylsulfonated polybenzimidazole; sulfonate group-containing perfluorocarbon (Nafion (manufactured by DuPont) ( Registered trademark), Aciplex (manufactured by Asahi Kasei)); carboxyl group-containing perfluorocarbon (Flemion S membrane (manufactured by Asahi Glass) (registered trademark)); and the like.

  Further, the anode 16 and the cathode 18 are respectively configured such that an anode side catalyst layer 16A and a cathode side catalyst layer 18A including carbon particles supporting a catalyst and fine particles of a solid electrolyte are formed on the anode substrate 16B and the cathode substrate 18B, respectively. It can be.

  Examples of the catalyst for the anode side catalyst layer 16A include platinum, gold, silver, ruthenium, rhodium, palladium, osmium, iridium, cobalt, nickel, rhenium, lithium, lanthanum, strontium, yttrium, and alloys thereof.

  Moreover, as a catalyst of the cathode side catalyst layer 18A used for the cathode 18, the thing similar to the anode side catalyst layer 16A can be used, The said exemplary substance can be used. The catalyst for the anode side catalyst layer 16A and the cathode side catalyst layer 18A may be the same or different.

  Further, examples of the carbon particles supporting the catalyst include acetylene black (DENKA BLACK (manufactured by Denki Kagaku) (registered trademark), vulcan XC72 (manufactured by Cabot), etc.), ketjen black, carbon nanotube, carbon nanohorn, and the like. .

  The fine particles of the solid electrolyte in the anode side catalyst layer 16A and the cathode side catalyst layer 18A may be the same or different. Here, as the solid electrolyte fine particles, the same material as that of the solid polymer film 20 can be used, but a material different from the solid polymer film 20 or a plurality of materials can also be used.

  Furthermore, as the anode substrate 16B and the cathode substrate 18B, porous substrates such as carbon paper, a carbon molded body, a carbon sintered body, a sintered metal, and a foam metal can be used.

  When methanol or ethanol is used as the fuel, carbon dioxide bubbles are generated as a by-product when hydrogen ions are generated from the methanol or ethanol at the anode 16. The retention of the carbon dioxide bubbles in the anode substrate 16B causes a decrease in power generation efficiency. The cause of the bubble retention is that the moisture covering the bubbles remains attached to the anode substrate 16B.

  Therefore, it is preferable to perform surface treatment with a hydrophilic coating material or a hydrophobic coating material on the surface of the anode substrate 16B. By performing the surface treatment with the hydrophilic coating material, the fluidity of the fuel on the surface of the anode substrate 16B is enhanced. This makes it easier for the carbon dioxide bubbles to move with the fuel.

  Further, by treating with a hydrophobic coating material, it is possible to reduce the adhesion of moisture that causes the formation of bubbles on the surface of the anode substrate 16B. Therefore, the formation of bubbles on the surface of the anode substrate 16B can be reduced. Examples of the hydrophilic coating material include titanium oxide and silicon oxide. On the other hand, examples of the hydrophobic coating material include polytetrafluoroethylene, polyethylene, and silane. The surface of the cathode substrate 18B can be similarly subjected to surface treatment. In particular, by treating the surface of the cathode substrate 18B with a hydrophobic coating agent, it becomes difficult for water to stay on the surface of the cathode 18, and water can be efficiently removed from the surface of the cathode 18.

  In the fuel cell 12 configured as described above, the anode 16 is supplied with fuel from the fuel cartridge 22 (see FIG. 1), and the cathode 18 is supplied with air (oxygen) as an oxidant. The fuel battery cell 12 generates power.

  As the fuel, liquid fuels such as methanol, ethanol, dimethyl ether, other alcohols, liquid hydrocarbons such as cycloparaffin, formalin, formic acid, hydrazine, and the like can be used. The liquid fuel can be an aqueous solution. Alkali can also be added to the fuel. Thereby, the ion conductivity of hydrogen ion can be improved.

  As the oxidizing agent, air can be usually used, but oxygen gas may be supplied.

When hydrogen is used as the fuel, the reaction at the anode 16 is represented by the following formula (1).
3H2 → 6H + + 6e- (1)
On the other hand, when methanol is used as the fuel, the reaction at the anode 16 is represented by the following formula (2).
CH3OH + H2O-> 6H ++ CO2 + 6e- (2)
In either case, hydrogen ions move through the solid polymer film 20 and the reaction at the cathode 18 is represented by the following formula (3).

3 / 2O2 + 6H + + 6e− → 3H2O (3)
In such a fuel cell 12, water is generated at the cathode 18, as shown in the above formula (3). Further, water together with hydrogen ions generated at the anode 16 reaches the cathode 18 through the solid polymer film 20, so that water stays on the surface of the cathode 18.

  If water stays on the surface of the cathode, it becomes difficult to take in oxygen, the power generation efficiency of the fuel cell 10 is reduced, and the output is further reduced.

  Next, a water absorbing member that removes water remaining on the surface of the cathode 18 will be described.

  As shown in FIG. 1A, a water absorption block 26 having a rectangular cross section is attached to the back surface of the shutter member 40 along the edge of the opening 42 with an adhesive or the like. Therefore, it is arranged on the side of the fuel battery cell 12. As the water absorption block 26, a hydrophilic porous material is used. For example, a porous body made of felt, sponge, resin particle sintered body, resin fiber sintered body, natural fiber, resin fiber bundle or the like is used. Further, the material of the water absorption block 26 is preferably polyester, rayon or the like.

  Further, the thickness of the water absorption block 26 is equal to or greater than or equal to the distance between the back surface of the shutter member 40 and the surface of the cathode 18. Further, the length of the water absorption block 26 in the width direction (the depth direction in FIG. 1) is longer than the length of the cathode 18 of the fuel cell 12 in the width direction.

  Next, an operation in which the water absorption block 26 removes water staying on the surface of the cathode 18 will be described.

  As shown in FIG. 1A, when the mobile phone 30 is not in use, the shutter member 40 is disposed at the protection position, and the water absorption block 26 is disposed on the side of the fuel cell 12.

  As shown in FIG. 1B, when the display member 34 of the mobile phone 30 is opened, the shutter member 40 slides from the protected position toward the open position. Accordingly, the water absorption block 26 moves toward the abutting portion 38 while being in contact with the surface of the cathode 18 of the fuel battery cell 12, and absorbs and removes the water remaining on the surface of the cathode 18.

  As shown in FIG. 1C, when the mobile phone 30 is in use, the shutter member 40 moves to the open position, and the water absorption block 26 is disposed above the fuel cartridge 22 through the fuel cell 12. The

  Thus, the water absorption block 26 moves along the surface of the cathode 18 just by opening and closing the mobile phone 30, and the water generated on the surface of the cathode 18 can be absorbed and removed.

  In addition, since the width dimension of the water absorption block 26 is longer than the width dimension of the cathode 18, the water absorption block 26 can pass through the entire surface of the cathode 18 and remove all the water generated on the surface of the cathode 18. In addition, the water absorption block 26 may be configured to absorb water by bringing the water absorption block 26 into contact with the surface of the water droplets attached to the surface without contacting the surface of the cathode 18.

  Moreover, since the water absorption block 26 can be operated without consuming electric power, the running cost can be reduced.

  Although the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to such embodiments, and various other embodiments are possible within the scope of the present invention. It is clear to the contractor. For example, in the above embodiment, the fuel cell 10 is used for the mobile phone 30 having the display member 34 that can be opened and closed, but instead, a portable personal computer or a portable game having a display member that can open and close the fuel cell. You may use it for a machine.

  Next, a mobile phone 30 employing the fuel cell 11 according to the second embodiment of the present invention will be described with reference to FIGS.

  In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 5A, in this embodiment, instead of the water absorption block 26 of the first embodiment, a sheet-like water absorption sheet 50 is disposed between the fuel cartridge 22 and the fuel cell 12 and the take-up shaft 52. It is wound up and stored. Further, a coil (not shown) that urges the winding shaft 52 in the winding direction of the water absorbing sheet 50 (the direction of arrow B shown in FIG. 5A) is provided on the winding shaft 52 around which the water absorbing sheet 50 is wound. A spring is provided. Thereby, the water absorbing sheet 50 can be wound around the winding shaft 52 in a state where no external force is applied.

  As shown in FIG. 6A, one end of a wire 54 is attached to the tip of the water absorbent sheet 50 wound around the winding shaft 52, and the other end of the wire 54 is connected to the fuel cell 12. It is being fixed to the pulley 56 provided on both sides of. The pulley 56 is rotatably supported by a bracket (not shown), and a substantially circular dial 60 that can be manually rotated protrudes to the outside of the mobile phone 30 at one end of a rotation shaft 58 of the pulley 56. Is provided. Further, guide members (not shown) for guiding both end portions of the water absorbent sheet 50 unwound by the wire 54 are provided on both sides of the fuel battery cell 12.

  On the other hand, below the winding shaft 52, a water absorption box 62 is provided as a collecting means for collecting the water absorbed by the water absorption sheet 50. Further, inside the water absorption box 62, the water absorption sheet 50 is provided with a coil spring. There is provided a porous member (not shown) that sucks up the water floating on the surface of the water-absorbing sheet 50 when it is wound around the winding shaft 52 by the urging force.

  Further, the fuel cell 12, the fuel cartridge 22, and the water absorbing sheet 50 are covered with a cover 51, and an opening 51A is formed at a position facing the fuel cell 12 so that air can be taken in. It has become.

  Next, an operation in which the water absorbing sheet 50 removes water staying on the surface of the cathode 18 will be described.

  As shown in FIG. 5A and FIG. 6A, the water absorbent sheet 50 is wound around the winding shaft 52 in a state where no rotational force is applied to the dial 60.

  As shown in FIG. 5B and FIG. 6B, when the dial 60 is rotated in the direction of arrow C about the rotation shaft 58, the pulley 56 also rotates together, and the pulley 56 winds the wire 54.

  When the pulley 56 winds up the wire 54, the water absorbent sheet 50 attached to one end of the wire 54 is developed and moved in a plane along the surface of the cathode 18 while being guided by the guide member.

  As shown in FIGS. 5 (C) and 6 (C), when the water absorbing sheet 50 is developed in a plane and covers the entire surface of the cathode 18, the rotation operation of the dial 60 in the direction of arrow C is not shown. Stopped by a stopper.

  When the load on the dial 60 is released, the water absorbing sheet 50 is wound around the winding shaft 52 by the urging force of the coil spring provided on the winding shaft 52 as shown in FIG.

  Further, when the water absorbing sheet 50 is wound around the winding shaft 52 by the urging force of the coil spring, the water absorbed by the water absorbing sheet 50 floats on the surface of the water absorbing sheet 50. The raised water is absorbed by a porous member (not shown) provided in the water absorption box 62.

  In this way, the water absorbing sheet 50 can be unwound in a flat shape along the surface of the cathode 18 simply by rotating the dial 60, thereby removing water generated on the surface of the cathode 18.

  Further, since the water absorption box 62 collects the water absorbed by the water absorption sheet 50, even when the water absorption sheet 50 is used next time, the water absorption sheet 50 can sufficiently remove the water generated on the surface of the cathode 18. .

  Although the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to such embodiments, and various other embodiments are possible within the scope of the present invention. It is clear to the contractor. For example, in the said embodiment, although the water absorbing sheet 50 was pulled out with one wire, it may replace with this and the water absorbing sheet 50 may be pulled out using several wires. In this case, the water absorbing sheet 50 can be pulled out in a stable state.

  Next, a mobile phone 30 employing the fuel cell 13 according to the third embodiment of the present invention will be described with reference to FIGS.

  In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 7A, in this embodiment, instead of the water absorption block 26 of the first embodiment, a sheet-like water absorption sheet 70 is provided at a position facing the fuel cartridge 22 with the fuel cell 12 interposed therebetween. Is wound around the winding shaft 72 and stored.

  A coil spring (not shown) that urges the winding shaft 72 in the winding direction of the water absorbing sheet 50 (the direction of arrow D shown in FIG. 7A) is provided on the winding shaft 72 on which the water absorbing sheet 70 is wound. Is provided. Thereby, the water absorbing sheet 70 can be wound around the winding shaft 72 in a state where no external force is applied.

  As shown in FIG. 8 (A), one end of a wire 74 is attached to the tip of the stored water absorbing sheet 70, and the other end of the wire 74 extends along the surface of the cathode 18, It is wound around a fixed pulley 76 disposed between the fuel battery cell 12 and the fuel cartridge 22 and extends downward. Further, the other end of the wire 74 extending downward is wound around a fixed pulley 78 disposed below the fixed pulley 76, and penetrates through the back plate 80 </ b> A of the fuel cartridge case 80 that stores the fuel cartridge 22. It is inserted into the case 80. Further, guide members (not shown) for guiding both end portions of the water absorbent sheet 70 unwound by the wire 74 are provided on both sides of the fuel battery cell 12.

  As shown in FIG. 7A, the abutting portion 38 is provided with an exchange space 82 that allows the fuel cartridge 22 to be exchanged. With this configuration, the fuel cartridge 22 can be replaced from the side facing the back plate 80A.

  A push-pull plate 84 is provided inside the fuel cartridge case 80 of the back plate 80A, and the other end of the wire 74 described above is fixed. A concave engaging recess 84A is provided on the fuel cartridge 22 side of the push / pull plate 84 so as to engage with an engaging convex portion 22B provided on the fuel cartridge 22. That is, when the fuel cartridge 22 is pulled out in the direction of arrow E shown in FIG. 7A, the engagement protrusion 22B and the engagement recess 84A are engaged, so that the push / pull plate 84 is moved together with the fuel cartridge 22. It slides in the direction of arrow E.

  Further, a hooking portion 86 protruding inward is provided at the edge of the fuel cartridge case 80 opened for replacement of the fuel cartridge 22. As shown in FIG. 7C, when the fuel cartridge 22 is replaced, the push / pull plate 84 that has been slid together with the fuel cartridge 22 comes into contact with the hook portion 86, and the engagement convex portion 22B and the engagement concave portion. The engagement of 84 </ b> A is released and the push / pull plate 84 is left inside the fuel cartridge case 80.

  Further, the fuel cell 12, the fuel cartridge 22, and the water absorbing sheet 70 are covered with a cover 51, and an opening 51A is formed at a position facing the fuel cell 12 so that air can be taken in. It has become.

  Next, an operation in which the water absorbing sheet 70 removes water remaining on the surface of the cathode 18 will be described.

  As shown in FIGS. 7A and 8A, when the fuel cartridge 22 is housed in the fuel cartridge case 80, the water absorbing sheet 70 is wound around the winding shaft 72 by the urging force of the coil spring. It is in the state that was. When replacing the fuel cartridge 22, the user pulls out the fuel cartridge 22 in the direction of arrow E.

  As shown in FIGS. 7B and 8B, when the fuel cartridge 22 is pulled out in the direction of arrow E, the engagement convex portion 22B of the fuel cartridge 22 and the engagement concave portion 84A of the push-pull plate 84 are engaged. Therefore, the push / pull plate 84 slides in the direction of arrow E together with the fuel cartridge 22.

  As the push / pull plate 84 slides, the other end of the wire 74 is pulled, and the water absorbing sheet 70 attached to one end of the wire 74 is planar along the surface of the cathode 18 while being guided by a guide member (not shown). Move to expand.

  As shown in FIGS. 7C and 8C, when the water absorbing sheet 70 is developed in a flat shape and covers the entire surface of the cathode 18, the push / pull plate 84 hits the hook 86 and engages. The engagement between the convex portion 22 </ b> B and the engaging concave portion 84 </ b> A is released, and the push / pull plate 84 is left inside the fuel cartridge case 80. When the push-pull plate 84 is left behind, the push-pull plate 84 slides toward the back plate 80A by the urging force of the coil spring provided on the winding shaft 72, and the water absorbing sheet 70 is shown in FIG. As shown, it is wound on a winding shaft 72.

  In this way, the water absorbing sheet 70 can be spread out along the surface of the cathode 18 by simply replacing the fuel cartridge 22, thereby removing the water generated on the surface of the cathode 18. it can.

  Next, a mobile phone 30 employing a fuel cell 15 according to a fourth embodiment of the present invention will be described with reference to FIGS.

  In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 9A, in this embodiment, the water absorption block 26 as the water absorption member is not attached to the back surface of the shutter member 40 as in the first embodiment, and instead, the cross section is rectangular. The shaped water absorption block 90 is provided between the fuel battery cell 12 and the fuel cartridge 22.

  9A and 10A, one end of a wire 94 is attached to one side of the water absorption block 90 (side facing the fuel cell 12). The end is fixed to a pulley 96 provided at a position facing the water absorption block 90 with the fuel battery cell 12 interposed therebetween. The pulley 96 is rotatably supported by a bracket (not shown), and a motor 100 is provided at one end of a rotating shaft 98 of the pulley 96. Further, the fuel cell 15 is provided with a timing control unit 106 that controls the rotation of the motor 100.

  On the other hand, as shown in FIGS. 9B and 10B, one end of the wire 102 is attached to the other side of the water absorption block 90, and the other end of the wire 102 is connected to the fuel cell 12. It is wound around a rod 92 provided between the fuel cartridges 22. The rod 92 is provided with a coil spring (not shown) that urges the water absorption block 90 so as to be disposed above the rod 92. Thereby, the water absorption block 90 is urged to the upper side of the rod 92 in a state where no external force is applied. Further, guide members (not shown) for guiding both ends of the water absorption block 90 that is moved by the wire 94 are provided on both sides of the fuel battery cell 12.

  Further, as shown in FIG. 12A, the length of the water absorption block 90 in the transport direction (dimension I1 shown in FIG. 12) is shorter than the length of the cathode 18 (dimension L1 shown in FIG. 12). As shown in FIG. 12B, the water absorption block 90 does not cover the entire surface of the cathode 18 all at once.

  The fuel cell 12, the fuel cartridge 22, and the water absorption block 90 are covered with a cover 51, and an opening 51A is formed at a position facing the fuel cell 12 so that air can be taken in. It has become.

  Next, an operation in which the water absorption block 90 removes water remaining on the surface of the cathode 18 will be described.

  As shown in FIGS. 9A and 10A, in a state where no rotational force is applied to the motor 100, the water absorption block 90 is disposed on the upper side of the rod 92 by the biasing force of the coil spring.

  As shown in FIGS. 9B and 10B, when the timing controller 106 rotates the motor 100 in the direction of arrow K and the pulley 96 winds up the wire 94, the water absorption block 90 becomes a guide member. Then, it slides along the surface of the cathode 18 while being guided to absorb water and remove it.

  As shown in FIGS. 9C and 10C, when the water absorption block 90 slides along the surface of the cathode 18 and passes through the entire surface of the cathode 18, the timing controller 106 loads the load on the motor 100. Release and stop.

  When the load of the motor 100 is released, the rod 92 winds the wire 102 by the urging force of the coil spring provided on the rod 92, and the water absorption block 90 is moved to the initial position shown in FIGS. 9 (A) and 10 (A). Return. The operation time for sliding the water absorption block 90 to remove the water on the surface of the cathode 18 is preferably set to 1 second or less in consideration of supplying air to the cathode 18.

  Here, the timing when the timing control unit 106 rotates the motor 100 and slides the water absorption block 90 along the surface of the cathode 18 will be described with reference to FIG.

  First, when the user turns on the power of the mobile phone 30, the fuel cell 15 starts generating power in Step 1000, and the process proceeds to Step 1100.

  In step 1100, the timing control unit 106 rotates the motor 100, slides the water absorption block 90 along the surface of the cathode 18, releases the load on the motor 100, and returns the water absorption block 90 to the initial position. Perform water absorption. When the water absorption operation is completed, the routine proceeds to step 1200.

  In step 1200, the timer for managing the power generation time provided in the timing control unit 106 is reset. In step 1300, the timer is started, and the process proceeds to step 1400.

  In step 1400, when the power generation time reaches a predetermined time, the process proceeds to step 1100 to perform a water absorption operation. If the power generation time does not reach the predetermined time, the process proceeds to step 1500.

Here, if the current density at the time of power generation of the fuel cell 12 at 0.75V was 0.3 A / cm ^2, water quantity per 1 cm ² is about 1.68Myueru / min. Assuming that all of this stays on the surface of the cathode 18, a water film with a thickness of 0.5 mm is formed after 30 minutes, which inhibits air diffusion. Actually, not all of the generated water stays on the surface of the cathode 18 due to diffusion or evaporation to the anode 16, but a voltage drop due to air diffusion inhibition starts in about 30 minutes. Therefore, the water absorption block 90 may be operated every 10 to 60 minutes, preferably every 20 to 40 minutes after the start of power generation.

  In step 1500, the timing control unit 106 detects the voltage of the fuel battery cell 12, and when the detected voltage is equal to or lower than the predetermined voltage, the process proceeds to step 1100 to perform a water absorption operation, and when the voltage is higher than the predetermined voltage. Proceeds to step 1600.

  Here, normally, the voltage of the fuel battery cell 12 changes in proportion to the current value up to 0.3 V or more, but when it becomes 0.3 V or less, the voltage rapidly drops without being proportional to the change in current value due to the air diffusion control. Occurs. Therefore, the water absorption block 90 may be operated when the voltage of the fuel battery cell 12 is lowered to 0.2 to 0.5 V or less, preferably 0.25 to 0.4 V or less.

  In step 1600, the timing control unit 106 detects the voltage fluctuation of the fuel cell 12, and when the detected voltage fluctuation exceeds a predetermined ratio, the process proceeds to step 1100 to perform a water absorption operation, and the voltage fluctuation reaches the predetermined ratio. If not, the process proceeds to step 1700.

  Here, the voltage fluctuation per unit time is usually greater than 0.1 V / min because it is difficult to maintain the voltage of the fuel cell 12 when a sudden load fluctuation occurs and due to air diffusion control. Is the time. Therefore, the water absorption block 90 may be operated when the voltage fluctuation is 0.05 to 2.0 V / min or more, preferably 0.08 to 1.2 V / min or more.

  In step 1700, the timing control unit 106 detects the power generation amount of the fuel battery cell 12. When the predetermined power generation amount is reached, the timing control unit 106 proceeds to step 1100 to perform a water absorption operation. The process proceeds to step 1800.

Here, for example, when the current density when generating the voltage of the single cell at 0.75 V is 0.3 A / cm ² , the amount of power generated in 30 minutes is 0.112 Wh / cm ² . Even if the current density is different from that described above, based on the amount of power, generated power is 0.04~0.23Wh / cm ^2, preferably water block for each 0.08~0.15Wh / cm ² 90 It is good to operate.

  In step 1800, when the timing control unit 106 detects the current-voltage characteristic and does not satisfy the predetermined current-voltage characteristic, the process proceeds to step 1100 to perform a water absorption operation. Transition to 1900.

  Here, when the fuel battery cell 12 is incorporated into a device, it is usual to measure the basic characteristics (current-voltage characteristics) of the fuel battery cell 12. When the performance of the fuel cell 12 during power generation falls below this basic characteristic, there is a possibility that air diffusion is inhibited. Therefore, when the cell performance (voltage value at a certain current value) is 0 to 30% lower than the basic characteristics measured in advance, preferably 0 to 15% lower, the water absorption block 90 may be operated.

  In step 1900, if the mobile phone 30 is turned on, the process proceeds to step 1400 again, the timing control unit 106 monitors each characteristic and performs a water absorption operation, and if the mobile phone 30 is not turned on. Then, the process proceeds to step 2000, power generation is stopped, and the process ends in step 2100.

  Thus, since the timing control part 106 moves the motor 100 for every predetermined electric power generation time, the water of the surface of the cathode 18 can be wiped off regularly.

  Further, since the timing control unit 106 moves the motor 100 when the voltage of the fuel battery cell 12 becomes equal to or lower than the predetermined voltage, the voltage of the fuel battery cell 12 can be prevented from becoming lower than the predetermined voltage. Furthermore, the frequency of the water absorption operation can be reduced.

  Further, since the timing control unit 106 moves the motor 100 when the voltage fluctuation of the fuel battery cell 12 exceeds a predetermined ratio, the voltage fluctuation of the fuel battery cell 12 can be suppressed and stable electricity can be supplied. Furthermore, the frequency of the water absorption operation can be reduced.

  Moreover, since the timing control part 106 moves the motor 100 for every predetermined electric power generation amount, the water produced | generated according to the electric power generation amount can be wiped off efficiently.

  In addition, the timing control unit 106 can supply electricity satisfying the predetermined current-voltage characteristic to move the motor 100 when the fuel battery cell 12 no longer satisfies the predetermined current-voltage characteristic, and can further absorb water. The frequency of operation can be reduced.

  Further, since the length of the water absorption block 90 in the transport direction is shorter than the length of the cathode 18 and the water absorption block 90 does not cover the entire surface of the cathode 18 at a time, air as an oxidant is always supplied to the cathode 18. can do.

  Next, a mobile phone 30 employing a fuel cell 17 according to a fifth embodiment of the present invention will be described with reference to FIGS.

  In addition, about the same member as 4th Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 14A, in this embodiment, the water absorption block 90 is not provided as in the fourth embodiment, and instead, a water absorption roll rotatably supported on the shaft member 110 is provided. 112 is arranged on the upper surface of the fuel cartridge 22.

  A rectangular parallelepiped fixing member 114 is provided at one end of the shaft member 110, and the fixing member 114 is fixed to a pulley 116 provided so as to sandwich the fuel cell 12 and an endless belt 126 wound around the pulley 118. ing. Further, a motor 120 is attached to the rotating shaft of the pulley 116.

  A through hole 110A is provided at the other end of the shaft member 110, and a rod 122 provided in parallel with the endless belt 126 passes through the through hole 110A. As a result, the shaft member 110 is movable along the rod 122.

  On the other hand, as shown in FIG. 13A, a squeeze convex portion 22 </ b> A having a triangular section is provided on the upper surface of the fuel cartridge 22 adjacent to the water absorption roll 112. A water absorption hole (not shown) is provided on the surface of the squeeze convex portion 22 </ b> A, and a porous member 124 that absorbs water that has entered the fuel cartridge 22 from the water absorption hole is provided inside the fuel cartridge 22. Is provided.

  Next, an operation in which the water absorption roll 112 removes water staying on the surface of the cathode 18 will be described.

  As shown in FIGS. 13A and 14A, the water absorption roll 112 is disposed on the upper surface of the fuel cartridge 22 in an initial state where no rotational force is applied to the motor 120.

  As shown in FIGS. 13B and 14B, when the timing control unit 106 rotates the motor 120 in the arrow L direction at a predetermined timing and rotates the pulley 116, the pulley 116 and 118 are wound. The hooked endless belt 126 rotates.

  By rotating the endless belt 126, the shaft member 110 whose one end is attached to the endless belt 126 via the fixing member 114 and whose other end is movable along the rod 122 moves toward the pulley 116. Thereby, the water absorption roll 112 moves by rolling on the surface of the cathode 18.

  As shown in FIGS. 13C and 14C, when the water absorption roll 112 rolls on the surface of the cathode 18 and passes through the entire surface of the cathode 18, the timing control unit 106 reverses the motor 120 in the direction of arrow M. The water absorption roll 112 is rotated toward the fuel cartridge 22. When the water absorption roll 112 returns to the initial position shown in FIGS. 13A and 14A, the timing controller 106 stops the motor 120, and the water absorption roll 112 returns to the initial position to prepare for the next operation.

  Here, when the water-absorbing roll 112 returns to the initial position, the surface of the water-absorbing roll 112 is pressed by the squeeze convex portion 22 </ b> A, and the absorbed water floats on the surface of the water-absorbing roll 112. The raised water is collected by a porous member 124 provided inside the fuel cartridge 22 through a water absorption hole provided in the squeeze convex portion 22A.

  In this manner, the water generated on the surface of the cathode 18 can be removed by rolling the water absorption roll 112 along the surface of the cathode 18.

  Further, since the porous member 124 collects the water absorbed by the water absorption roll 112, the water absorption roll 112 can sufficiently remove the water generated on the surface of the cathode 18 even when the water absorption roll 112 is used next time. it can.

  Next, a mobile phone 30 employing a fuel cell 19 according to a sixth embodiment of the present invention will be described with reference to FIG.

  In addition, about the same member as 2nd Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 15A, in this embodiment, as in the second embodiment, the dial 60 is not provided at one end of the rotating shaft 58 of the pulley 56, and instead, the timing control is performed. The unit 106 is provided with a controlled motor 130.

  Next, an operation in which the water absorbing sheet 50 removes water staying on the surface of the cathode 18 will be described.

  As shown in FIG. 15A, in the initial state where no rotational force is applied to the motor 130, the water absorbing sheet 50 is wound around the winding shaft 52 by the urging force of the coil spring provided on the winding shaft 52. It is in the state.

  As shown in FIG. 15B, when the timing control unit 106 rotates the motor 130 in the arrow P direction at a predetermined timing, the pulley 56 winds the wire 54.

  When the pulley 56 winds up the wire 54, the water absorbing sheet 50 attached to one end of the wire 54 moves while being developed in a plane along the surface of the cathode 18 while being guided by the guide member.

  As shown in FIG. 15C, when the water absorbing sheet 50 is developed in a flat shape and covers the entire surface of the cathode 18, the timing control unit 106 releases the load of the motor 130 and is provided on the winding shaft 52. As shown in FIG. 15A, the water absorbing sheet 50 is wound around the winding shaft 52 by the biasing force of the coil spring.

  Thus, the water generated on the surface of the cathode 18 can be removed by causing the motor 130 to spread the water-absorbing sheet 50 in a planar shape along the surface of the cathode 18.

  Next, a mobile phone 30 employing a fuel cell 21 according to a seventh embodiment of the present invention will be described with reference to FIGS.

  In addition, about the same member as 6th Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIGS. 16 (A) and 17 (A), in this embodiment, as in the sixth embodiment, the water absorbent sheet 50 is not wound around the winding shaft 52, and instead, Thus, the water-absorbing strip sheet 140 is folded in a zigzag manner between the fuel battery cell 12 and the fuel cartridge 22.

  In addition, zigzag shape memory wires (not shown) are provided at both end edges of the water-absorbing strip sheet 140, and rods (not shown) are provided across the width direction of the water-absorbing strip sheet 140 at the zigzag fold. Is provided. With this configuration, the water-absorbing strip sheet 140 is folded in a zigzag manner when no external force is applied to the water-absorbing strip sheet 140.

  In addition, guide rails (not shown) are provided at both ends of the fuel battery cell 12 to spread the water-absorbing strip sheet 140 on the surface of the cathode 18. Furthermore, the other end of the water-absorbing strip sheet 140, one end of which is fixed to the wire 54, is attached to a wall portion 142 erected on the side of the fuel cartridge 22. Thereby, when the water-absorbing strip sheet 140 is pulled by the wire 54, the water-absorbing strip sheet 140 is developed in a planar shape along the surface of the cathode 18 and moves toward the pulley 56.

  Next, an operation in which the water-absorbing strip sheet 140 removes water remaining on the surface of the cathode 18 will be described.

  As shown in FIGS. 16A and 17A, in an initial state where no rotational force is applied to the motor 130, the water-absorbing strip sheet 140 is formed between the fuel cell 12 and the fuel cartridge 22 in a shape memory wire. It is folded in a zigzag shape with the urging force of.

  As shown in FIG. 16B and FIG. 17B, when the timing control unit 106 rotates the motor 130 in the arrow N direction at a predetermined timing, the pulley 56 winds the wire 54.

  As the pulley 56 winds up the wire 54, the water-absorbing strip sheet 140 attached to one end of the wire 54 is gradually developed in a planar shape along the surface of the cathode 18 from the end portion folded in a zigzag shape. Move toward pulley 56.

  As shown in FIGS. 16C and 17C, when the water-absorbing strip sheet 140 is developed in a flat shape and covers the entire surface of the cathode 18, the timing control unit 106 releases the load of the motor 130. When the load of the motor 130 is released, the water-absorbing strip sheet 140 is moved to the fuel cell as shown in FIG. 17A by the urging force of the zigzag shape memory wires provided at both ends of the water-absorbing strip sheet 140. The cell 12 and the fuel cartridge 22 are folded in a zigzag shape.

  Thus, the water generated on the surface of the cathode 18 can be removed by causing the motor 130 to develop the zigzag water-absorbing strip sheet 140 in a plane along the surface of the cathode 18.

  Next, a mobile phone 30 employing a fuel cell 25 according to an eighth embodiment of the present invention will be described with reference to FIG.

  In addition, about the same member as 6th Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 18 (A), in this embodiment, as in the sixth embodiment, the water absorbing sheet 50 is not provided between the fuel cartridge 22 and the fuel battery cell 12, and instead, The water absorbing sheet 50 is provided inside the fuel cartridge 22.

  That is, when the fuel cartridge 22 is replaced, the water absorbing sheet 50 is also replaced together.

  In addition, about the removal of the water of the surface of the cathode 18 by the water absorption sheet 50 shown to FIG. 18 (A) (B) (C), when attaching the fuel cartridge 22, the edge part of the wire 54 attached to the pulley 56 is used. It is the same as that of 6th Embodiment except attaching to the latching | locking part (illustration omitted) provided in the edge of the water absorbing sheet 50. FIG.

  Thus, by providing the water absorbing sheet 50 inside the fuel cartridge 22, the water absorbing sheet 50 can be replaced simultaneously with the replacement of the fuel cartridge 22, and the trouble of replacing only the water absorbing sheet 50 can be saved.

  Next, a mobile phone 30 employing a fuel cell 27 according to a ninth embodiment of the present invention will be described with reference to FIG.

  In addition, about the same member as 4th Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 19A, in this embodiment, unlike the fourth embodiment, the surface of the cathode 18 is provided with a hydrophilic coating having hydrophilicity along the transport direction of the water absorbing member. Two hydrophilic portions 144 and three water-repellent portions 146 coated with a water-repellent water-repellent coating are provided, and the hydrophilic portions 144 and the water-repellent portions 146 are arranged alternately. That is, the water generated on the surface of the cathode 18 is repelled by the water repellent part 146 and stays in the hydrophilic part 144.

  Further, the water absorption block 148 is not provided over the entire width of the cathode 18 and is provided at a position corresponding to the two hydrophilic portions 144. Two pulleys 96 are also provided corresponding to the two water absorption blocks 148.

  In addition, about the removal of the water of the surface of the cathode 18 by the water absorption block 148 shown to FIG. 19 (A) (B) (C), the two water absorption blocks 148 wipe off the water which stayed in the two hydrophilic parts 144. Is the same as in the fourth embodiment.

  Next, a mobile phone 30 employing a fuel cell 29 according to a tenth embodiment of the present invention will be described with reference to FIGS.

  In addition, about the same member as 7th Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 20A, in this embodiment, unlike the seventh embodiment, the fuel cartridge 22 is not disposed on the side of the fuel battery cell 12, and instead, the fuel battery cell is arranged. A fuel cartridge 22 is disposed below 12.

  Further, a second fuel chamber 160 for supplying fuel to the fuel cell 12 along the lower surface of the fuel cell 12 is provided between the fuel cell 12 and the fuel cartridge 22. A rectangular parallelepiped circuit box 162 is provided below the second fuel chamber 160.

  Furthermore, a first fuel chamber 164 that receives fuel from the fuel cartridge 22 and supplies the fuel to the second fuel chamber is provided so as to be surrounded by the second fuel chamber 160 and the fuel cartridge 22 and the circuit box 162.

  Further, on the upper surface of the fuel cartridge 22, there is provided an intake valve 23 that is opened when the internal pressure of the first fuel chamber 164 rapidly decreases and supplies the fuel of the fuel cartridge 22 to the first fuel chamber 164.

  Furthermore, a piston 166 that seals the first fuel chamber 164 by closing the opening is provided at the opening of the first fuel chamber 164. The piston 166 is slidably attached in a direction in which the volume of the first fuel chamber 164 increases or decreases (direction of arrow F shown in FIG. 20A), and one end of the piston 166 is attached to the inner wall of the piston 166. The other end of the coil spring 168 attached to the bottom surface 164A is attached. With this configuration, the piston 166 is biased toward the bottom surface 164 </ b> A by the biasing force of the coil spring 168.

  Furthermore, on the outer wall of the piston 166, one end of three wires 174 (see FIG. 23) wound around a fixed pulley 170 provided on the side of the piston 166 and a fixed pulley 172 provided above the fixed pulley 170. Part is attached.

  The other ends of the three wires 174 are wound around fixed pulleys 170 and 172, and are further wound around a rolling flywheel 176 facing the fuel cell 12 along the upper surface of the fuel cell 12. It is hung and fixed.

  As shown in FIG. 23, the three wires 174 are provided at equal intervals, and both ends and the center of a rectangular water-absorbing sheet 178 arranged at equal intervals are arranged on the wires 174. It is attached. When the wire 174 moves from the flywheel 176 toward the fixed pulley 172, the water absorbing sheet 178 fixed to the wire 174 moves along the surface of the cathode 18 and wipes off the water remaining on the surface of the cathode 18. ing.

  As shown in FIG. 22, the flywheel 176 includes a rotating roll portion 180 and a fixed vehicle body 182, and shaft portions 183 project from both end portions of the roll portion 180. One end of the shaft portion 183 is rotatably supported by a frame member (not shown), and the other end is rotatably supported by a bearing portion 184 provided on the vehicle body 182.

  Furthermore, a torsion coil spring 200 is provided on the shaft portion 183 that is pivotally supported by the bearing portion 184, and the roll portion 180 is rotated clockwise (arrow H shown in FIG. 20A) by the urging force of the coil spring 200. Direction). That is, the wire so that the force that the coil spring 200 urges the roll portion 180 in the clockwise direction, the force that the coil spring 168 urges the piston 166 toward the bottom surface 164A, and the internal pressure of the first fuel chamber are balanced. 174 moves.

  In this embodiment, as shown in FIG. 20 (A), the first fuel chamber 164 is sufficiently filled with fuel, and the biasing force of the coil spring 200 is at a position where the piston 166 maximizes the capacity of the first fuel chamber 164. The spring force of each spring is determined so that the urging force of the coil spring 168 and the internal pressure of the first fuel chamber are balanced.

  As shown in FIGS. 20A and 22, a groove portion 186 that is curved when viewed from the side is provided on the surface of the roll portion 180 that faces the vehicle body 182. Furthermore, a wall portion 188 is provided so as to divide the groove portion 186 into an inner groove portion 186A and an outer groove portion 186B. In addition, the wall part 188 is not provided in the both ends of the inner groove part 186A and the outer groove part 186B, but the inner groove part 186A and the outer groove part 186B are in contact with each other.

  Further, a concave and convex latch portion 196 is provided inside the inner groove portion 186 </ b> A, and a cylindrical pin 190 that engages with the latch portion 196 is provided on the vehicle body 182.

  The base portion 192 of the pin 190 has a diameter that is slightly larger than that of the general portion, and is movably disposed on a moving portion 194 provided in the vehicle body 182 and extending in the radial direction.

  Further, a coil spring 198 extending in the radial direction is attached to the base portion 192, and the base portion 192 is biased toward the center line of the shaft portion 183 by the coil spring 198, whereby the pin 190 is latched by the latch portion 196. It comes to mesh with.

  The shape of the teeth of the latch portion 196 that engages with the pin 190 is such that the roll portion 180 engages with the pin 190 when the roll portion 180 rotates clockwise (the direction indicated by the arrow H in FIG. 20A). When the rotation of 180 is prevented and the roll unit 180 rotates counterclockwise (in the direction of arrow J shown in FIG. 20A), the engagement with the pin 190 is released and the roll unit 180 becomes rotatable. It has a shape like this.

  Next, an operation in which the water absorbing sheet 178 removes water remaining on the surface of the cathode 18 will be described.

  As shown in FIG. 20A, in a state where the fuel is filled in the first fuel chamber 164, the piston 166 has a biasing force of the coil spring 168 so that the capacity of the first fuel chamber 164 is maximized. Is arranged outward (in a direction away from the bottom surface 164A).

  As described above, in this state, the biasing force of the coil spring 200, the biasing force of the coil spring 168, and the internal pressure of the first fuel chamber are balanced.

  As shown in FIG. 20B, when the fuel cell 12 generates power, the fuel in the second fuel chamber 160 is consumed, and further, the fuel in the second fuel chamber 160 is consumed, so that the first fuel chamber 160 is consumed. The fuel is supplied from 164 to the second fuel chamber 160.

  By supplying fuel from the first fuel chamber 164, the internal pressure of the first fuel chamber 164 decreases, and the piston 166 moves toward the bottom surface 164A by the biasing force of the coil spring 168. As the piston 166 moves, the wire 174 is pulled, and the water absorbing sheet 178 moves along the surface of the cathode 18 to absorb the water remaining on the surface of the cathode 18.

  Further, when the wire 174 is pulled toward the fixed pulley 172, the engagement between the pin 190 and the latch portion 196 is released, and the roll portion 180 rotates counterclockwise (the direction indicated by the arrow J shown in FIG. 20B). . Further, at the position where the biasing force of the coil spring 200, the biasing force of the coil spring 168 and the internal pressure of the first fuel chamber are balanced, the operations of the piston 166, the water absorbing sheet 178, and the roll unit 180 are stopped, and the coil spring 198 is biased. The pin 190 to be engaged and the latch portion 196 are engaged. Accordingly, the pin 190 prevents the roll unit 180 from rotating in the clockwise direction.

  As shown in FIG. 21A, when the fuel cell 12 further generates power, the fuel in the second fuel chamber 160 is consumed, and the fuel in the second fuel chamber 160 is consumed, so that the first fuel chamber 164 is consumed. From this, the fuel is supplied to the second fuel chamber 160.

  By supplying fuel from the first fuel chamber 164, the internal pressure of the first fuel chamber 164 decreases, and the piston 166 moves toward the bottom surface 164A by the biasing force of the coil spring 168. As the piston 166 moves, the wire 174 is pulled, and the water absorbing sheet 178 moves along the surface of the cathode 18 to absorb the water remaining on the surface of the cathode 18.

  Further, when the wire 174 is pulled toward the fixed pulley 172, the engagement between the pin 190 and the latch portion 196 is released, and the roll portion 180 rotates counterclockwise (the direction indicated by the arrow J shown in FIG. 21C). . As the roll portion 180 rotates counterclockwise, the pin 190 passes through the latch portion 196 and reaches the outer peripheral edge of the inner groove portion 186A.

  As shown in FIG. 21B, when the pin 190 reaches the outer peripheral edge of the inner groove portion 186A, the pin 190 moves to the outer groove portion 186B along the outer peripheral edge and contacts the outside of the wall portion 188.

  When the pin 190 contacts the outside of the wall portion 188, the pin 190 is not engaged with the latch portion 196, and the roll portion 180 can be rotated in the clockwise direction. The roll unit 180 is rotated clockwise by the urging force of the coil spring 200.

  By rotating the roll unit 180 in the clockwise direction, the wire 174 is wound around the roll unit 180, the water absorbing sheet 178 moves along the cathode 18 toward the flywheel 176, and the water staying on the surface of the cathode 18 is absorbed. To do.

  Further, the piston 166 is pulled by the wire 174 and moves in a direction to increase the capacity of the first fuel chamber 164. When the capacity of the first fuel chamber 164 increases, the internal pressure of the first fuel chamber 164 rapidly decreases, whereby the intake valve 23 is opened and the fuel in the fuel cartridge 22 is supplied to the first fuel chamber 164. By supplying fuel to the first fuel chamber 164, the piston 166 returns to the initial position shown in FIG. 20A and prepares for the next wiping operation.

  As described above, the water absorption sheet 178 can be moved along the cathode 18 without using a driving source such as a motor, and thus water can be wiped off. Therefore, running cost can be suppressed.

  In addition, since the adjacent water absorbing sheets 178 are arranged at a predetermined interval, the entire surface of the cathode 18 is not covered at a time, and air as an oxidant can always be supplied to the cathode 18 and is stable. Electricity can be supplied.

  Although the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to such embodiments, and various other embodiments are possible within the scope of the present invention. It is clear to the contractor. For example, in the said embodiment, although the water absorption sheet 178 was made into the square shape, it is good also as a rectangular shape etc. instead of this.

  Next, a mobile phone 30 employing a fuel cell 35 according to an eleventh embodiment of the present invention will be described with reference to FIG.

  In addition, about the same member as 4th Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 24A, in this embodiment, the cathode 18 is not integrally formed as in the fourth embodiment, and is divided into three along the moving direction of the water absorption block 90, The water absorption block 90 has a rectangular shape extending in the width direction.

  Further, the length of the water absorption block 90 in the transport direction (dimension I2 shown in FIG. 24) is shorter than the length of the cathode 18 (dimension L2 shown in FIG. 24), and as shown in FIG. The water absorption block 90 does not cover the entire surface of the cathode 18 all at once.

  Next, a mobile phone 30 employing a fuel cell 37 according to a twelfth embodiment of the present invention will be described with reference to FIG.

  In addition, about the same member as 11th Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 25 (A), in this embodiment, as in the tenth embodiment, the cathode 18 is not rectangular but has a rectangular shape.

  Further, the length of the water absorption block 90 in the conveyance direction (dimension I3 shown in FIG. 25) is shorter than the distance in the conveyance direction of the square-shaped cathode 18 (dimension L3 shown in FIG. 9). ), The water absorption block 90 does not cover the entire surface of the cathode 18 all at once.

  Next, a mobile phone 30 employing a fuel cell 39 according to a thirteenth embodiment of the present invention will be described with reference to FIG.

  In addition, about the same member as 11th Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 26 (A), in this embodiment, unlike the tenth embodiment, the water absorption block 90 has a square shape.

  Further, the distance (dimension I4 shown in FIG. 26) of the rectangular water-absorbing block 90 in the carrying direction is shorter than the length of the cathode 18 (dimension L4 shown in FIG. 26), which is shown in FIG. Thus, the water absorption block 90 does not cover the entire surface of the cathode 18 all at once.

  Next, a mobile phone 30 employing a fuel cell 41 according to a fourteenth embodiment of the present invention will be described with reference to FIG.

  In addition, about the same member as 11th Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 27A, in this embodiment, unlike the tenth embodiment, the cathode 18 is divided into three parts in the width direction of the water absorption block 90. As shown in FIG. The water absorption block 90 does not cover the entire surface of the cathode 18 all at once.

  Although the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to such embodiments, and various other embodiments are possible within the scope of the present invention. It is clear to the contractor. For example, although not particularly specified in the above embodiment, a mesh-like protective member capable of flowing out water is provided on the surface of the cathode 18 to avoid contact between the water absorbing member and the surface of the cathode 18. May be. In this case, the surface of the cathode 18 can be protected. In addition, as a material of the mesh-shaped protective member, Teflon (registered trademark), polyimide plated with gold, or the like can be used.

  In the above-described embodiment, the fuel cell 10 of the present invention has been described by taking the mobile phone 30 as an example. The fuel cell of the present invention can be used for the device.

(A) (B) (C) It is the side view which showed the fuel cell which concerns on 1st Embodiment of this invention, and showed the motion of the water absorbing sheet. It is sectional drawing which showed the fuel cell of the fuel battery | cell which concerns on 1st Embodiment of this invention. (A) It is the side view which showed the closed state of the mobile telephone by which the fuel cell which concerns on 1st Embodiment of this invention was employ | adopted. (B) It is the side view which showed the open state of the mobile telephone by which the fuel cell which concerns on 1st Embodiment of this invention was employ | adopted. (A) (B) It is the perspective view which showed the mobile telephone by which the fuel cell which concerns on 1st Embodiment of this invention was employ | adopted. (A) (B) (C) It is the side view which showed the fuel cell which concerns on 2nd Embodiment of this invention, and showed the motion of the water absorbing sheet. (A) (B) (C) It is the perspective view which showed the fuel cell which concerns on 2nd Embodiment of this invention, and showed the motion of the water absorbing sheet. (A) (B) (C) It is the side view which showed the fuel cell which concerns on 3rd Embodiment of this invention, and showed the motion of the water absorbing sheet. (A) (B) (C) It is the perspective view which showed the fuel cell which concerns on 3rd Embodiment of this invention, and showed the motion of the water absorbing sheet. (A) (B) (C) It is the side view which showed the fuel cell which concerns on 4th Embodiment of this invention, and showed the motion of the water absorbing sheet. (A) (B) (C) It is the perspective view which showed the fuel cell which concerns on 4th Embodiment of this invention, and showed the motion of the water absorbing sheet. It is the flowchart which showed the operation mode of the water absorption sheet | seat of the fuel cell which concerns on 4th Embodiment of this invention. (A) (B) It is the top view which showed the water absorption sheet | seat and fuel cell of the fuel cell which concern on 4th Embodiment of this invention. (A) (B) (C) It is the side view which showed the fuel cell which concerns on 5th Embodiment of this invention, and showed the motion of the water absorbing sheet. (A) (B) (C) It is the perspective view which showed the fuel cell which concerns on 5th Embodiment of this invention, and showed the motion of the water absorbing sheet. (A) (B) (C) It is the perspective view which showed the fuel cell which concerns on 6th Embodiment of this invention, and showed the motion of the water absorbing sheet. (A) (B) (C) It is the side view which showed the fuel cell which concerns on 7th Embodiment of this invention, and showed the motion of the water absorbing sheet. (A) (B) (C) It is the perspective view which showed the fuel cell which concerns on 7th Embodiment of this invention, and showed the motion of the water absorbing sheet. (A) (B) (C) It is the side view which showed the fuel cell which concerns on 8th Embodiment of this invention, and showed the motion of the water absorbing sheet. (A) (B) (C) It is the perspective view which showed the fuel cell which concerns on 9th Embodiment of this invention, and showed the motion of the water absorbing sheet. (A) (B) It is the side view which showed the fuel cell which concerns on 10th Embodiment of this invention, and showed the motion of the water absorbing sheet. (A) (B) It is the side view which showed the fuel cell which concerns on 10th Embodiment of this invention, and showed the motion of the water absorbing sheet. It is sectional drawing which showed the flywheel of the fuel cell which concerns on 10th Embodiment of this invention. It is the top view which showed the fuel cell which concerns on 10th Embodiment of this invention. (A) (B) It is the top view which showed the water absorbing sheet and fuel cell of the fuel cell which concern on 11th Embodiment of this invention. (A) (B) It is the top view which showed the water absorption sheet | seat and fuel cell of the fuel cell which concern on 12th Embodiment of this invention. (A) (B) It is the top view which showed the water absorbing sheet and fuel cell of the fuel cell which concern on 13th Embodiment of this invention. (A) (B) It is the top view which showed the water absorption sheet | seat and fuel cell of the fuel cell which concern on 14th Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Fuel cell 11 Fuel cell 12 Fuel cell 13 Fuel cell 15 Fuel cell 16 Anode 17 Fuel cell 18 Cathode 19 Fuel cell 20 Solid polymer film 21 Fuel cell 22 Fuel cartridge 22A Squeeze convex part (squeeze means)
22B engagement convex part (motion converting means)
25 Fuel Cell 27 Fuel Cell 29 Fuel Cell 30 Mobile Phone (Electronic Device)
32 Operation member (main body)
34 Display member (opening / closing part)
35 Fuel cell 37 Fuel cell 39 Fuel cell 40 Shutter member (opening / closing operation member)
41 Fuel Cell 50 Water Absorbing Sheet 52 Winding Shaft (Shaft)
54 Wire (guide means)
56 Pulley (guide means)
58 Rotating shaft (guide means)
60 dial (manual operation part)
62 Water absorption box (collection means)
70 Water absorption sheet 72 Winding shaft
80 Fuel cartridge case (storage part)
84 Push-pull plate (slide member)
84A Engaging recess (motion converting means)
90 Water absorption block 92 Rod (moving means)
94 wire (moving means)
96 Pulley (moving means)
98 Rotating shaft (moving means)
100 motor (moving means)
102 wire (moving means)
106 Timing control part 110A Through hole (moving means)
110 Shaft member (moving means)
112 Water absorption roll 114 Fixing member (moving means)
116 pulley (moving means)
118 Pulley (moving means)
120 motor (moving means)
122 Rod (moving means)
124 porous member (recovery means)
130 Motor (moving means)
140 Water Absorption Strip Sheet 148 Water Absorption Block 150 Water Absorption Sheet 178 Water Absorption Sheet

Claims (16)

A fuel cell comprising: an anode that is a fuel electrode; a cathode that is an oxidant electrode; and a solid polymer membrane disposed between the anode and the cathode;
A water absorbing member for absorbing water;
Moving means for moving the water absorbing member along the surface of the cathode;
A fuel cell comprising: The fuel cell is provided in an electronic device having an opening / closing part,
The moving means is an opening / closing operation interlocking member that has one end fixed to the main body of the electronic device and the other end slidably attached to the opening / closing portion, and converts the opening / closing operation of the opening / closing portion into a movement operation of the water absorbing member. The fuel cell according to claim 1, wherein the fuel cell is provided.   The said moving means is provided with the guide means which guides the said water absorption member along the surface of the said cathode, and the manual operation member which moves the said water absorption member manually along the said guide means. The fuel cell as described. A fuel cartridge for supplying fuel to the anode, and a storage portion for storing the fuel cartridge,
The moving means is slidably disposed in the storage portion and is connected to the water absorbing member, and an operation conversion means for changing the operation of detaching the fuel cartridge from the storage portion to the movement operation of the slide member. The fuel cell according to claim 1, further comprising:   2. The fuel cell according to claim 1, wherein the water absorbing member is a water absorbing block, and the moving means slides the water absorbing block along a surface of the cathode.   2. The fuel cell according to claim 1, wherein the water absorbing member is a water absorbing sheet wound around a shaft, and the moving means unwinds and winds the water absorbing sheet along the surface of the cathode. .   2. The fuel according to claim 1, wherein the water-absorbing member is a water-absorbing strip sheet that is folded and stored, and the moving means develops and stores the water-absorbing strip sheet along the surface of the cathode. battery.   2. The fuel cell according to claim 1, wherein the water absorbing member is a water absorbing roll, and the moving means rolls the water absorbing roll along the surface of the cathode.   The fuel cell according to any one of claims 5 to 8, further comprising a timing control unit that moves the moving means every predetermined power generation time.   The fuel cell according to any one of claims 5 to 8, further comprising a timing control unit that moves the moving means for each predetermined power generation amount.   9. The fuel cell according to claim 5, further comprising a timing control unit configured to move the moving unit when a voltage of the fuel cell becomes equal to or lower than a predetermined voltage.   9. The fuel cell according to claim 5, further comprising a timing control unit configured to move the moving unit when a voltage fluctuation of the fuel cell exceeds a predetermined ratio.   9. The fuel cell according to claim 5, further comprising a timing control unit configured to move the moving unit when a predetermined current-voltage characteristic is not satisfied.   14. The fuel cell according to claim 1, wherein a water absorption area of the water absorbing member is smaller than a surface area of the cathode.   The fuel cell according to any one of claims 1 to 14, wherein a protective member capable of flowing out water to the surface is provided on a surface of the cathode.   The squeeze means for squeezing the water absorbed by the water absorbing member, and a recovery means for recovering the water squeezed by the squeeze means, are provided. Fuel cell.

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