JP2006278163A - Fuel cell container, fuel cell, and electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fuel cell container and a fuel cell capable of efficient power generation. <P>SOLUTION: In the fuel cell, first and second substrates 6, 7 are formed to lead out first and second wiring conductors 10, 11 to respective outer surfaces, one of the first and second wiring conductors 10, 11 being electrically connected to an air electrode 5 while the other being electrically connected to a fuel electrode 4. First and second fluid passages 8, 9 for supplying air and fuel respectively to an electrolyte membrane 3 are formed to face toward the inside of the container. At least one of the first and second substrates 6, 7 that is closer to the air electrode includes a porous region 12 having pores 13 that communicate from an inner side to an outer side of the fluid passages. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a small and highly reliable fuel cell container made of ceramics that accommodates an electrolyte member, a fuel cell using the same, and an electronic device.

  In recent years, development of small fuel cells that operate at a lower temperature than before has been actively conducted. Depending on the type of electrolyte used for the fuel cell, a polymer electrolyte fuel cell (hereinafter referred to as PEFC), a phosphoric acid fuel cell, or a solid electrolyte fuel cell is known. ing.

Among them, PEFC has a low operating temperature of about 80-100 ° C,
(1) The output density is high, and the size and weight can be reduced.
(2) Since the electrolyte is not corrosive and the operating temperature is low, since there are few restrictions on the battery constituent materials from the viewpoint of corrosion resistance, cost reduction is easy.
(3) Since it can be started at room temperature, the startup time is short.
It has excellent features such as For this reason, PEFC takes advantage of the above features and is not only applied to driving power sources for vehicles and cogeneration systems for homes, but also to mobile phones, PDAs (Personal Digital Assistants), laptop computers, digital cameras, The use as a power source for portable electronic devices whose output of a video camera or the like has several W to several tens of W has been considered.

The PEFC is roughly classified, for example, an air electrode (cathode) composed of a carbon electrode to which catalyst fine particles such as platinum and platinum-ruthenium are adhered, and a fuel electrode (anode) composed of a carbon electrode to which catalyst fine particles such as platinum are adhered, It has a film-like electrolyte member (hereinafter referred to as an electrolyte member) interposed between the fuel electrode and the air electrode. Here, hydrogen gas (H ₂ ) extracted through the reforming unit is supplied to the fuel electrode, while oxygen gas (O ₂ ) in the atmosphere is supplied to the air electrode, Predetermined electric energy is generated (power generation) by the electrochemical reaction, and electric energy that is a driving power source (voltage / current) for the load is generated.

Specifically, when the hydrogen gas to the fuel electrode (H ₂₎ is supplied, as shown in the following chemical equation (1), electrons by the catalyst (e ^-) is separated hydrogen ions (protons; H ⁺ ) Is generated and passes through the electrolyte member to the air electrode side, and electrons (e ⁻ ) are taken out by the carbon electrode constituting the fuel electrode and supplied to the load.

3H ₂ → 6H ⁺ + 6e ⁻ (1)
On the other hand, when air is supplied to the air electrode, as shown in the following chemical reaction formula (2), electrons (e ⁻ ) passing through the load by the catalyst and hydrogen ions (H ⁺ ) passing through the electrolyte member, Reaction with oxygen gas (O ₂ ) in the air produces water (H ₂ O).

6H ⁺ + 3 / 2O ₂ + 6e ⁻ → 3H ₂ O (2)
Such a series of electrochemical reactions (formula (1) and formula (2)) proceeds at a relatively low temperature condition of approximately 80 to 100 ° C., and by-products other than electric power are basically water (H ₂ O) only.

  The ion conductive film (exchange membrane) constituting the electrolyte member is a polystyrene-based cation exchange membrane having a sulfonic acid group, a mixed membrane of fluorocarbon sulfonic acid and polyvinylidene fluoride, and trifluoroethylene grafted on a fluorocarbon matrix. Recently, a perfluorocarbon sulfonic acid film (for example, trade name “Nafion” manufactured by DuPont) or the like has been used.

  FIG. 3 is a cross-sectional view showing the configuration of a conventional fuel cell (PEFC). In the figure, 14 is a fuel cell (PEFC), 15 is an electrolyte member, 16 and 17 are a pair of porous electrodes arranged on the electrolyte member 15 so as to sandwich the electrolyte member, that is, a fuel electrode and an air electrode. , 18 are gas separators, 19 is a fuel flow path, and 220 is an air flow path.

  The gas separator 18 is provided so as to penetrate the separator portion and the gas inflow / outflow frame that form the outer shape of the gas separator 18, the separator portion that separates the fuel passage 19 and the air passage 20, and the separator portion. The electrode member 16 is configured to correspond to the fuel electrode 16 and the air electrode 17 of the electrolyte member 15. A fuel cell stack which is a minimum unit of a battery is formed by stacking a large number of fuel electrodes 16 and air electrodes 17 of the electrolyte member 15 via gas separators 18 so that they are electrically connected in series and / or in parallel. A general fuel cell (PEFC) body is a stack in which a stack is housed.

The fuel electrode 16 is supplied with fuel gas containing water vapor (gas rich in hydrogen) from the reforming section through the fuel flow path 220 formed in the gas separator 18, and the air electrode 17 is passed through the air flow path 20. Air is supplied as an oxidizing gas from the atmosphere, and power is generated by a chemical reaction in the electrolyte member 15.
JP 2001-266910 A Special table 2001-507501 gazette

However, in such a conventional fuel cell, as described above, when air is supplied to the air electrode, as shown in the chemical reaction formula (2), the electrons (e ⁻ ) and the electrolyte that have passed through the load by the catalyst are used. Hydrogen ions (H ⁺ ) that have passed through the member react with oxygen gas (O ₂ ) in the air to generate water (H ₂ O) on the cathode side (air electrode side). Then, water (H ₂ O) generated abruptly near the bottom surface of the air flow path becomes water droplets and closes the air flow path in a short time, and the oxidant gas from the atmosphere passes through the air flow path to the air electrode. As a result, it is difficult to supply air, and the electrochemical reaction in the electrolyte member is hindered, so that the power generation efficiency is deteriorated. In particular, since a fuel cell used in a portable device is required to be small and highly efficient, a reduction in power generation efficiency due to water (H ₂ O) generated by reaction is a very big problem.

  The present invention has been devised in order to solve the above-described problems of the prior art, and an object of the present invention is to provide a highly efficient and robust small fuel cell container. It is an object of the present invention to provide a highly reliable fuel cell container capable of supplying and highly efficient electrical connection, a fuel cell using the same, and an electronic device.

  In the fuel cell container of the present invention, the electrolyte member having the air electrode and the fuel electrode is accommodated in a hollow container formed between the first and second bases that are joined with the main surfaces facing each other. The first and second bases each have a first and a second wiring conductor electrically connected to the air electrode and the other to the fuel electrode, respectively, on each outer surface. And fluid passages for supplying air or fuel to the electrolyte membrane are formed facing the inside of the container, respectively, and the first and second substrates are formed. Among them, at least the one on the air electrode side includes a porous region having pores communicating from the inner surface to the outer surface of the fluid flow path.

  The container for a fuel cell according to the present invention is characterized in that at least the one on the air electrode side of the first and second substrates is made of ceramics.

  The fuel cell according to the present invention includes the above-described fuel cell container, and the electrolyte in which the air electrode and the fuel electrode are electrically connected to the first and second wiring conductors and accommodated in the fuel cell container. And a member.

  An electronic apparatus according to the present invention includes the above-described fuel cell as a power source.

In the fuel cell container according to the present invention, since at least the base on the air electrode side includes a porous region having pores communicating from the inner surface to the outer surface of the fluid flow path, the water generated by the electrochemical reaction in the electrolyte member. (H ₂ O) passes through the pores by capillary action and is discharged to the outer surface of the fuel cell container, and the porous area has a large specific surface area, so that the contact area between the generated water (H ₂ O) and the outside air increases. Thus, the dissipating property of water (H ₂ O) generated to the outside air is promoted. Accordingly, it is possible to effectively prevent the electrode surface of the air electrode from being covered with water (H ₂ O) by suppressing the blockage of the fluid flow path to which air is supplied. As a result, the air is supplied. Since air can be continuously supplied as oxidant gas from the atmosphere through the fluid flow path, the chemical reaction in the electrolyte member is promoted, and highly efficient power generation can be performed.

  In the fuel cell container of the present invention, in the above configuration, when at least the base on the air electrode side is formed of ceramics having excellent mechanical strength and corrosion resistance, the container is destroyed by an impact caused by dropping or the like when mounted on a portable device. Further, it is possible to obtain a fuel cell container having excellent corrosion resistance against fluids including various gases. In this case, since the base on the air electrode side has a porous region and tends to have low mechanical strength, it is particularly effective to form the ceramic with excellent mechanical strength as described above.

In the fuel cell of the present invention, since the fuel cell container has a porous region having at least the air electrode-side substrate having pores communicating from the inner surface to the outer surface of the fluid flow path, the fluid to which air is supplied It is possible to effectively prevent blockage of the flow path and the electrode surface of the air electrode from being covered with water (H ₂ O). High-efficiency power generation becomes possible by supplying to

  In addition, since the above-described fuel cell is used as a power source, the electronic device of the present invention has continuous high-efficiency power generation, and has, for example, a moving image display function and a mechanism with large power consumption such as an electric motor. Even so, it is excellent in convenience that can be stably operated.

  A fuel cell container and a fuel cell according to the present invention will be described below in detail with reference to the accompanying drawings.

  FIG. 1 is a cross-sectional view showing an example of an embodiment of a fuel cell container and a fuel cell using the same according to the present invention. In FIG. 1, 1 is a fuel cell, 2 is a fuel cell container, 3 is an electrolyte member, 4 is a fuel electrode, 5 is an air electrode, 6 is a first substrate (substrate on the fuel electrode side), and 7 is a second electrode. A base (air electrode side base), 8 a first fluid channel (fuel electrode side fluid channel), 9 a second fluid channel (air electrode side fluid channel), and 10 a first fluid channel A wiring conductor 11 is a second wiring conductor.

  FIG. 2 is an enlarged view of a main part of the fuel cell container of the present invention shown in FIG. 1 and a fuel cell using the same. In FIG. 2, the reference numerals are the same as those in FIG. 1, 12 is a porous region, and 13 is a pore.

  The fuel cell container according to the present invention includes a first container and a second wiring conductor that form a hollow container with the first and second substrates and connect the electrolyte member housed in the container to the outside of the substrate. Is done. Further, the fuel cell houses the electrolyte member in a container formed by the first and second substrates, and the electrolyte member (actually, the fuel electrode 4 and the air electrode 5 of the electrolyte member) is connected to the first and second wiring conductors. It is configured by electrical connection.

  In the electrolyte member 3, for example, a fuel electrode 4 serving as an anode electrode and an air electrode 5 serving as a cathode electrode are integrally formed on both main surfaces of an ion conductive film (exchange membrane) so as to face each other. Has been. Then, after the power is generated by the electrolyte member 3, electricity flows to the fuel electrode 4 and the air electrode 5 and can be taken out by the first and second wiring conductors 10 and 11.

  Such an ion conductive film (exchange membrane) of the electrolyte member 3 is made of a perfluorocarbon sulfonic acid resin, for example, a proton conductive ion exchange resin such as a trade name “Nafion” (manufactured by DuPont). These fuel electrode 4 and air electrode 5 are porous bodies in which conductive fine particles carrying a catalyst such as platinum, palladium or alloys thereof, for example, carbon fine particles are held by a hydrophobic resin binder such as polytetrafluoroethylene. It is constituted by. The fuel electrode 4 is formed by hot pressing a carbon electrode with catalyst fine particles such as platinum or platinum-ruthenium on the electrolyte member 3, or a carbon electrode material with catalyst fine particles such as platinum or platinum-ruthenium. It is formed by a method of applying or transferring a mixture with a solution in which an electrolyte material is dispersed onto the electrolyte.

The first substrate 6 and the second substrate 7 have recesses, and have a role of mounting the electrolyte member 3 inside the recesses. The aluminum oxide (Al ₂ O ₃ ) sintered body, mullite (3Al ₂ O _3). · 2SiO ₂₎ sintered material, silicon carbide (SiC) sintered material, aluminum nitride (AlN) sintered material, silicon nitride _(Si 3 _{N 4)} sintered material, ceramic glass ceramic sintered body or the like In order to reduce the height of the fuel cell, the bending strength, which is the mechanical strength of the first base 6 and the second base 7, can be formed. A material made of ceramics of 200 MPa or more is desirable. For example, it is preferably formed of an aluminum oxide sintered body made of a dense material having a relative density of 95% or more. In addition, if the container which can accommodate an electrolyte member is formed between the 1st and 2nd base | substrates 6 and 7 into which a main surface opposes, a recessed part will be 1st base | substrate 6 or Only one of the second substrates 7 may be used. Different shapes and dimensions may be used.

  In the case of using an aluminum oxide sintered body for the first substrate 6 and the second substrate 7, first, a rare earth oxide powder and a sintering aid are added to and mixed with the aluminum oxide powder, and an aluminum oxide sintered body is formed. Adjust the raw material powder. Next, an organic binder and a dispersing agent are added to the raw material powder of the aluminum oxide sintered body, mixed to form a paste, and an organic binder is added from this paste by a doctor blade method, or an organic binder is added to the raw material powder, press forming, rolling forming, etc. Thus, a green sheet having a predetermined thickness is produced. Then, through this green sheet, through holes as the first fluid flow path 8 and the second fluid flow path 9 are formed by a punching method using a mold, a drilling method using a micro drill, a drilling method using laser light irradiation, and the like. A through hole for arranging the first wiring conductor 10 and the second wiring conductor 11 is formed. In addition, the 1st fluid flow path 8 and the 2nd fluid flow path 9 may be the groove | channel formed in the surface or the inside by stamping with a metal mold | die, press molding, etc.

  Then, after aligning and laminating and pressing a predetermined number of sheet-like molded bodies filled with a conductor paste that is a conductor such as the first wiring conductor 10 and the second wiring conductor 11, A base body having desired pores 13 is obtained by firing at a maximum firing temperature of 1200 to 1500 ° C. in a non-oxidizing atmosphere to decompose the organic binder and the porous organic sheet and to sinter alumina ceramics. obtain.

  Here, of the first and second substrates 6 and 7, at least the substrate on the air electrode side (second substrate 7 in the present embodiment) has a pore 13 having pores 13 communicating from the inner surface to the outer surface of the fluid flow path. It is important to have a quality region 12.

The air electrode side substrate (second substrate 7 in the present embodiment) has pores 13 having pores 13 communicating from the inner surface to the outer surface of the air electrode side fluid channel (second fluid channel 9 in the present embodiment). By providing the material region 12, the water (H ₂ O) generated by the electrochemical reaction in the electrolyte member 3 is discharged to the outer surface of the fuel cell container 2 by capillary action, and the generated water (H ₂ O) is increased by increasing the contact area between the outside air and the generated water (H ₂ O) is promoted to the outside air, so the fluid flow path on the air electrode side (the second fluid flow in this embodiment) Since the clogging of the passage 9) can be effectively suppressed and air can be continuously supplied from the atmosphere as an oxidant gas, the chemical reaction in the electrolyte member 3 can be promoted and highly efficient power generation. Can be performed.

  Further, since such a porous region 12 has a three-dimensional network structure and has isotropic characteristics in mechanical characteristics, the first wiring conductor 10 and the second wiring conductor 10 of the first base 6 and the second base 7 are used. It is also possible to increase the reliability in mechanical characteristics at the portion where the two wiring conductors 11 are disposed.

  The porous region 12 is formed when the substrate on which the porous region 12 is provided is formed of ceramics such as the above-mentioned alumina ceramics, for example, an acrylic resin, wax, rubber, or the like in the desired porous region. What is necessary is just to use the green sheet which added and mixed previously the thing for pore formation materials, such as metals, such as Sn and Pb which elute or decompose | dissolve by heat | fever or an acid, etc. by burning or eluting by heating. Further, the entire first and / or second substrate 6 and 7 is formed using a green sheet in which the pore forming material is previously added and mixed, and the entire fuel cell container 2 is made of a porous material. It is also good.

  The pore forming material preferably has a spherical shape from the viewpoint that the particle size and volume, and the distribution thereof are uniform, and adjustment to a desired pore diameter and porosity is easy.

In addition, the higher the porosity of the porous region 12, the higher the effect of preventing the fluid channel (second fluid channel 9) on the air electrode side from being covered with water (H ₂ O), but the porosity is increased. When the fuel cell 1 using the fuel cell container 2 of the present invention is used in a portable device such as a notebook PC or a mobile phone, the strength of the porous region 12 decreases as the battery becomes higher. There is a possibility that the fuel cell container 2 is destroyed and the fuel cell 1 does not function. Therefore, when the fuel cell container 2 is formed using, for example, an alumina sintered body in order to prevent the destruction of the fuel cell container 2 due to dropping of the equipment, the porosity of the pores 13 formed in the porous region 12 is 60. -70 volume% is desirable.

  Moreover, it is preferable that the thickness of the 1st base | substrate 6 and the 2nd base | substrate 7 which consist of alumina ceramics shall be 0.2 mm or more. When the thickness is less than 0.2 mm, the first base 6 and the second base 7 tend to be easily cracked due to the stress generated when the second base 7 is attached to the first base 6. There is. On the other hand, if the thickness exceeds 5 mm, it is difficult to reduce the thickness and height, so that it becomes inappropriate as the fuel cell 1 mounted on a small portable device, and the heat capacity becomes large. It tends to be difficult to quickly set an appropriate temperature corresponding to the reaction conditions.

  The porous region 12 is a pore opening (water inlet) communicating with the outer surface of the container at least in a portion in contact with the air electrode in the inner surface of the fluid channel (second fluid channel 9) or in the vicinity thereof. Is preferably located. This is because water is generated at the air electrode portion, and the water is discharged through the pores as quickly as possible. If the pore openings are located over the entire inner surface of the flow path, water can be discharged more efficiently.

  Further, as shown in FIG. 1, the fluid flow path (second fluid flow path 9) is composed of a plurality of flow paths partitioned by partition walls, and the fuel cell container 2 is formed from the inner surface of the partition walls. When the region applied to the outer surface (the lower surface of the second base 7 or the like) is a porous region, a larger contact area between the porous region 12 (the pores thereof) and the fluid flow path (water to be discharged) is secured. Therefore, water can be discharged more effectively. The partition wall is formed by forming a part of the bottom surface of the concave portion of the first or second base into a convex shape.

The first wiring conductor 10 and the second wiring conductor 11 are preferably made of tungsten and / or molybdenum in order to prevent oxidation. In that case, for example, ₃ to 20 parts by mass of Al ₂ O ₃ and 0.5 to 5 parts by mass of Nb ₂ O ₅ with respect to 100 parts by mass of tungsten and / or molybdenum powder as inorganic components. A conductor paste is prepared by adding. The conductor paste is filled into the through hole of the green sheet to form a via conductor as a through conductor.

  In these conductor pastes, in order to improve the adhesion of the first and second substrates 6 and 7 to the ceramic, aluminum oxide powder and ceramic components forming the first and second substrates 6 and 7 are included. It is also possible to add the same composition powder, for example in the ratio of 0.05-2 volume%.

  The first and second wiring conductors 10 and 11 are formed by screen printing the same conductive paste on the green sheet before or after forming the via conductor by filling the through hole with the conductive paste. A predetermined pattern is printed and applied by a method such as gravure printing. The first and second wiring conductors 10 and 11 and the via conductor formed of tungsten and / or molybdenum are sintered and integrated with alumina ceramics.

  Further, the first wiring conductor 10 and the second wiring conductor 11 have a specific electric resistance of 0.1 milliΩcm from the viewpoint of efficiently taking out the electricity electrochemically generated by the electrolyte member 3 to the outside. The following is preferable. Examples of such materials include silver, silver-based metals, copper, and copper-based metals.

  When the first wiring conductor 10 and the second wiring conductor 11 are formed of silver, silver-based metal, copper, or copper-based metal, the first base 6 and the second base 7 are sintered with glass ceramics. By forming the first body 6 and the second body 7, and the first wiring conductor 10 and the second wiring conductor 11 at the same time, a low resistance wiring conductor can be easily formed. it can.

The glass ceramic sintered body is composed of a glass component and a filler component. Examples of the glass component include SiO ₂ —B ₂ O ₃ , SiO ₂ —B ₂ O ₃ —Al ₂ O ₃ , and SiO ₂ —B _2. O ₃ —Al ₂ O ₃ —MO (where M represents Ca, Sr, Mg, Ba or Zn), SiO ₂ —Al ₂ O ₃ —M ¹ O—M ² O (where M ¹ and M ² is the same or different and represents Ca, Sr, Mg, Ba or Zn), SiO ₂ —B ₂ O ₃ —Al ₂ O ₃ —M ¹ O—M ² O system (where M ¹ and M ² are Same as above), SiO ₂ —B ₂ O ₃ —M ³ ₂ O system (where M ³ represents Li, Na or K), SiO ₂ —B ₂ O ₃ —Al ₂ O ₃ —M ³ ₂ O-based (however, M ³ is the same as above), Pb-based glass, B i type | system | group glass etc. are mentioned.

Examples of the filler component include a composite oxide of Al ₂ O ₃ , SiO ₂ , ZrO ₂ and an alkaline earth metal oxide, a composite oxide of TiO ₂ and an alkaline earth metal oxide, Al ₂ O _3. And composite oxides containing at least one selected from SiO ₂ (for example, spinel, mullite, cordierite) and the like.

  Further, the volume of all conductors including the first wiring conductor 10 and the second wiring conductor 11 formed in the fuel cell container 2 may be 0.5% or more of the volume of the fuel cell container 2. Thereby, the resistance of the conductor formed in the fuel cell container 2 is reduced, and the electricity electrochemically generated by the electrolyte member 3 can be efficiently taken out to the outside.

  Further, when the first substrate 6 and the second substrate 7 are formed of a glass ceramic material as described above, a metal layer is formed in various shapes and electrical characteristics by the above metallization method or the like. Therefore, an electronic circuit element that functions as a resistor, a capacitance, an inductance, or the like can be formed inside the first and / or second bases 6 and 7. Therefore, for example, when a large capacity capacitor is formed in parallel with the fuel cell 1 and the current output from the fuel cell 1 becomes insufficient, the insufficient current is compensated and the target output current is compensated. It is possible to ensure current supply according to In addition, since a booster circuit can be formed, it is easy to secure a voltage necessary for the electronic device.

  When the resistance, capacitance, and inductance are formed in the first and / or second bases 6 and 7 as described above, the first and / or second bases 6 and 7 are formed of the glass ceramics described above. Thus, the first wiring conductor 10 and the second wiring conductor 11 are preferably made of a low resistance metal.

  The electrolyte member 3 is accommodated in the fuel cell container 2 of the present invention, and the fuel electrode 4 and the air electrode 5 of the electrolyte member 3 are electrically connected to the first wiring conductor 10 and the second wiring conductor 11, respectively. By connecting, the fuel cell 1 is formed.

  In the fuel cell 1, the lead-out portions of the first and second wiring conductors 10 and 11 are electrically connected to an external electric circuit board (not shown) such as a mother board constituting the electronic device, and used as a power source for the electronic device. used.

  In this case, an external connection terminal (not shown) may be joined to at least one of the first base 6 and the second base 7 by soldering or brazing. It is desirable that the external connection terminal has a shape that allows good electrical connection with a mother board or the like for forming the main electronic circuit of the electronic device. As such a shape, for example, a rod shape, a saddle shape, a conical shape, etc. that can be easily electrically and mechanically connected to each other by connecting or inserting terminals to an electronic circuit that is a main part of an electronic device. Is used.

  In addition, it is preferable to provide a fitting portion (a hole or the like) corresponding to the external connection terminal in a portion to which the external connection terminal is connected in the electronic circuit that is the main component of the electronic device. Further, by arranging the external connection terminals on the side surfaces of the first base 6 and the second base 7, the height of the electronic device can be reduced.

  Specifically, the electronic device of the present invention includes portable electronic devices such as mobile phones, PDAs (Personal Digital Assistants), toys such as digital cameras, video cameras, and game machines, and notebook PCs (personal computers). ) And other portable printers, fax machines, televisions, communication equipment, audio-video equipment, electric appliances such as electric fans, and electronic equipment such as electric tools.

  In recent years, these electronic devices have been added with a function of displaying a moving image using a liquid crystal display device or the like. Such a video display consumes a large amount of power, so that an electronic device using a conventional storage battery cannot be operated in a short time, whereas the electronic device of the present invention supplies a very long time power. It is equipped with a fuel cell that can perform long-time operation even when a moving image is displayed.

  For example, in the case of a mobile phone, a central processing unit (CPU), a control unit, a random access memory (RAM), a read-on memory (ROM), an input unit for inputting data operated by a user to the CPU, The antenna, the signal received by the antenna is demodulated and supplied to the control unit, the radio unit that modulates the signal supplied from the control unit and transmitted from the antenna, and the sound is generated based on the ringing signal from the control unit A speaker, a light emitting diode (LED) that is turned on, off, or blinking under the control of the control unit, a display unit that displays information by a signal from the control unit, a vibrator that vibrates by a drive signal from the control unit, and a user The voice signal from the control unit is transmitted to the control unit, the voice signal from the control unit is converted into voice and output, and the power source that supplies power to each unit The fuel cell 1 and the fuel cell container 2 of the present invention are incorporated in the power supply unit, so that the fuel cell 1 and the fuel cell container 2 are excellent in compactness, simplicity and safety. In addition, since it is possible to supply power for a long period of time with an even supply of fuel and high-efficiency electrical connection, the mobile phone can be reduced in size, height and weight.

  Also, considering that recent mobile phones are sufficient in terms of miniaturization and low profile, in the space generated by miniaturizing and reducing the height of the fuel cell 1 in this way, for example, a camera or video Electronic components having functions other than the telephone function such as the above can be newly incorporated, and further multi-function can be performed.

  Further, instead of newly incorporating an electronic component, an impact absorbing material, an impact preventing member or the like may be provided so as to protect the main electronic circuit. In this case, it is also possible to have a structure that can make the impact resistance when a shock is applied to the mobile phone main body due to dropping or the like, the waterproofness when used in rain, etc. stronger than before.

  In addition, by making it possible to reduce the size of the electric circuit inside the mobile phone body, there are fewer restrictions on the external shape of the mobile phone body, for example, making the mobile phone a shape that is easy for an elderly person or child to grip. It becomes possible to make the outer shape excellent in design.

  Further, in the case where the structure of the power source is a structure in which the fuel cell 1 and the fuel cell container 2 are detachable as described above, if the spare fuel cell 1 and the fuel cell container 2 are prepared, When the battery runs out, etc., the spare fuel cell 1 and the fuel cell container 2 can be easily replaced, or the fuel cell 1 can be taken out and replenished or replaced, so that calls can be continued. Therefore, the stability and convenience are superior to those using a conventional storage battery as a power source.

  In addition, since the used fuel cell 1 that has been replaced can be reused immediately by replenishing fuel, it is more convenient than charging, and resources can be effectively used. In addition, there is an advantage that it can be used in an emergency such as a long-term power failure due to a natural disaster or the like or outdoors.

  In the case of a notebook PC (personal computer), a personal computer main body, a first housing containing a keyboard for inputting predetermined data to the personal computer main body, data input by the keyboard, or a personal computer And a second housing containing a display for displaying data processed by the main body, the second housing is attached to the first housing so as to be openable and closable, and power is supplied to each part. The power supply unit is configured to be provided in the first casing, and the fuel cell 1 and the fuel cell container 2 are incorporated in the power supply unit. In this case, as in the above-described mobile phone, the fuel cell 1 and the fuel cell container 2 incorporated in the electronic device of the present invention are excellent in compactness, simplicity, and safety, and are evenly supplied with fuel and highly efficient electricity. Since long-term power supply can be achieved through connection, the laptop PC (personal computer) can be made smaller, lower in profile, lighter in weight and multi-functional, and the display can be increased in size and resolution. Correspondingly, a large current can be supplied stably over a long period of time, the display is easy to see, and the notebook PC (personal computer) has high convenience, such as a small weight and volume when carrying. It can be.

  If the fuel cell 1 and the fuel cell container 2 are detachable from the power source, the spare fuel cell 1 and the fuel cell container 2 of the present invention are prepared. In a situation where only a secondary battery such as a moving body such as a passenger aircraft is used, there is an advantage that it is possible to supply power for a long time as compared with the conventional case. Further, even when used in a public place as described above, since it is excellent in safety, it can be used without being restricted and is extremely convenient.

It is sectional drawing which shows an example of embodiment of the fuel cell using the container for fuel cells of this invention. It is a principal part expanded sectional view of the fuel cell of FIG. It is sectional drawing of the conventional fuel cell.

Explanation of symbols

1: Fuel cell 2: Fuel cell container 3: Electrolyte member 4: Fuel electrode 5: Air electrode 6: First substrate 7: Second substrate 8: First fluid channel 9: Second fluid channel 10: First wiring conductor 11: Second wiring conductor 12: Porous region 13: Pore

Claims (4)

A fuel cell container that accommodates an electrolyte member having an air electrode and a fuel electrode in a hollow container formed between first and second substrates whose main surfaces are opposed to each other, The first and second bases are formed such that one of the first and second wiring conductors electrically connected to the air electrode and the other to the fuel electrode are led to the outer surfaces. In addition, fluid flow paths for supplying air or fuel to the electrolyte membrane are formed facing the inside of the container, respectively, and at least the air electrode side of the first and second substrates is provided. A fuel cell container comprising a porous region having pores communicating from the inner surface to the outer surface of the fluid flow path. 2. The fuel cell container according to claim 1, wherein at least one of the first and second substrates on the air electrode side is formed of ceramics. 3. The fuel cell container according to claim 1 or 2, and the electrolyte in which the air electrode and the fuel electrode are electrically connected to each of the first and second wiring conductors and accommodated in the fuel cell container. And a fuel cell. An electronic apparatus comprising the fuel cell according to claim 3 as a power source.

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