KR20050021285A - Fuel cell container, fuel cell and electronic equipment - Google Patents

Abstract

PURPOSE: Provided are a container for a fuel cell which can accommodate an electrolyte member, is compact and strong, and can allow gas to be distributed uniformly and temperature to be gradient uniformly, a fuel cell containing the container for portable electronic device, and an electronic tool containing the fuel cell. CONSTITUTION: The container comprises a base body which comprises a ceramic a concave part accommodating an electrolyte member having first and second electrodes at one and the other main faces, at the one side; a first fluid channel which is formed from the bottom face of the concave part facing the one main face of the electrolyte member to the outer face of the base body; a first wire conductor whose one end is located at the bottom face of the concave part facing the first electrode of the electrolyte member and whose the other end is drawn to the outside of the base body; a cover body which is installed by covering the one side of the environment of the concave part of the base body with the concave part and seals tightly the concave part; a second fluid channel which is formed from the one side of the cover body facing the other main face of the electrolyte member to the outer face of the cover body; a second wire conductor whose one end is located at the one face of the cover body facing the second electrode of the electrolyte member and whose the other end is drawn to the outside of the cover body; and a porous body which is located at the base body or the cover body so as to cover one of the first and second fluid channels where an oxidizing gas is supplied.

Description

FUEL CELL CONTAINER, FUEL CELL AND ELECTRONIC EQUIPMENT}

The present invention relates to a compact and highly reliable fuel cell container made of a ceramic containing an electrolyte member, and a fuel cell and an electronic device using the same.

In recent years, development of a small fuel cell operating at a lower temperature than ever before has been actively performed. The fuel cell is known to be a solid polymer electrolyte fuel cell (hereinafter referred to as PEFC), a phosphate fuel cell, or a solid electrolyte fuel cell, depending on the type of electrolyte used for the fuel cell.

Among them, PEFC is low temperature with operating temperature of 80 ~ 100 ℃,

(1) high power density, small size, light weight,

(2) Since the electrolyte is not corrosive and the operating temperature is low, the battery components are less restricted in terms of corrosion resistance.

(3) Since it can be started at room temperature, it has an excellent feature of short starting time. For this reason, the PEFC can be applied not only to vehicle driving power supplies and home cogeneration systems, but also to output power from mobile phones, PDAs (Personal Digital Assistants), notebook computers, digital cameras and video cameras. Has been considered for use as a power source for portable electronic devices.

PEFC is broadly divided into, for example, a fuel electrode (cathode) composed of a carbon electrode with catalyst fine particles such as platinum and platinum-ruthenium, an air electrode (anode) comprising a carbon electrode with catalyst fine particles such as platinum, and a fuel electrode; It is comprised with the film-form electrolyte member (henceforth an electrolyte member hereafter) interposed between the air electrodes. Here, the 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 to generate a predetermined electric energy by an electrochemical reaction (power generation). Then, electric energy that is a driving power source (voltage / current) for the load is generated.

Specifically, when hydrogen gas (H ₂ ) is supplied to the anode, hydrogen ions (protons; H ⁺ ) from which electrons (e ^_ ) are separated by the catalyst are generated, as shown in the following chemical reaction formula (1), In addition to passing through the air electrode side through the electrolyte member, electrons e ^_ are drawn out by the carbon electrode constituting the fuel electrode and supplied to the load.

3H ₂ → 6H ⁺ + 6e ^_ . (One)

On the other hand, when air is supplied to the cathode, as shown in the following chemical reaction formula (2), electrons (e ^_ ) passed through the load by the catalyst and hydrogen ions (H ⁺ ) passing through the electrolyte member and oxygen in the air Gas (O ₂ ) reacts to produce water (H ₂ O).

6H ⁺ + 3 / 2O ₂ + 6e ^_ → 3H ₂ O. (2)

This series of electrochemical reactions (Equations (1) and (2)) proceeds at relatively low temperature conditions of approximately 80 to 100 ° C, and by-products other than electric power basically consist only of water (H ₂ O). .

The ion conductive membrane (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 a grafted trifluoroethylene on a fluorocarbon matrix. And the like, and perfluorocarbon sulfonic acid membranes (for example, manufactured by Nafion DuPont) are used.

4 shows the configuration of a conventional fuel cell (PEFC) in cross section. In FIG. 4, reference numeral 21 denotes a PEFC, reference numeral 23 denotes an electrolyte member, reference numerals 24 and 25 are disposed on the electrolyte member 23 so as to sandwich the electrolyte member, and a pair of functions having functions as a gas diffusion layer and a catalyst layer. It is a porous electrode, that is, a fuel electrode and an air electrode, 26 is a gas separator, 28 is a fuel flow path, and 29 is an air flow path.

The gas separator 26 is provided with a stacking portion and a gas inflow / outflow frame forming an outer shape of the gas separator 26, a separator portion for separating the fuel passage 28 and an air passage 29, and installed to penetrate the separator portion. And electrodes arranged so as to correspond to the fuel electrode 24 and the air electrode 25 of the electrolyte member 23. A plurality of fuel cells 24 and air electrodes 25 of the electrolyte member 23 are laminated through the gas separator 26 so as to be electrically connected in series and / or in parallel to form a fuel cell stack that is the smallest unit of the cell. The stack housed in the housing is a typical PEFC body.

A fuel gas (hydrogen-rich gas) containing water vapor from the reformer is supplied to the anode 24 through the fuel passage 28 formed in the gas separator 26, and the air passage 29 is supplied to the cathode 25. Air is supplied as an oxidizing gas from the atmosphere through the air, and is generated by a chemical reaction in the electrolyte member 23.

Related technologies include Japanese Patent Laid-Open No. 2001-266910 and Japanese Patent Laid-Open No. 2001-507501.

However, the fuel cell 21 proposed and developed conventionally as such a high-voltage, high-capacity cell has a stack structure, a large-area, large-weight, large-size cell, and the use of a fuel cell as a small cell. Is hardly considered in the prior art.

That is, the conventional gas separator 26 in the fuel cell 21 has the following problems. That is, in the laminate in which the electrolyte members 23 are laminated using the gas separator 26, the side surfaces of the electrolyte members 23 are exposed to the outside, and therefore, the fuel cells may easily be damaged by falling during carrying. 21) There is a problem that it is difficult to secure the overall mechanical reliability.

In addition, in order to mount the fuel cell 21 in a portable electronic device, a fuel cell container excellent in compactness, simplicity, and safety unlike a conventional large fuel is required. That is, to apply as a portable power source such as a general-purpose chemical cell, it is necessary to miniaturize and reduce the fuel cell container in order to shorten the temperature rise to the operating temperature for a short time and to reduce the heat capacity. However, in the conventional fuel cell 21, the gas separator 26, which occupies most of the ratio of the heat capacity, is easily broken when thinned, such as in the case of the gas separator 26 formed by cutting on the surface of the carbon plate. Therefore, a thickness of several mm is required. Therefore, there is a problem that miniaturization and low height are difficult.

In addition, the output voltage of the fuel cell 21 is determined by the partial pressure of the gas supplied to the electrodes 24 and 25 on the front and back surfaces of the electrolyte member 23. That is, when the fuel gas supplied to the electrolyte member 23 is consumed in the power generation reaction through the gas flow path 28, the partial pressure of the fuel gas on the surface of the fuel electrode 24 is lowered and the output voltage is lowered. Similarly, when air is also consumed through the air passage 29, the partial pressure of oxygen on the surface of the cathode 25 is lowered and the output voltage is lowered. Therefore, it is necessary to supply fuel gas evenly. However, since the gas separator 26 of the conventional fuel cell 21 forms a flow path on the surface of the carbon plate, in particular, the groove of the flow path becomes narrow when thinned. Therefore, there is also a problem that the flow path resistance becomes large and uniform gas supply is difficult.

In addition, the combination of the plurality of electrolyte members 23 and the opposite fuel electrode 24 and the air electrode 25 and the gas separator 26 are arbitrarily and efficiently connected in series or parallel to adjust the overall output voltage and output current. You need to be. However, in the conventional fuel cell 21, in order to take out electricity from the fuel electrode and the air electrode in which the electrolyte member 23 is inserted, the method is drawn out and connected to the outside, or the gas separator 26 is connected in series with each other as a conductive material. There is only a way to do it, and there is a problem that it is difficult in a small fuel cell.

In addition, if a dust or the like enters the gas flow path 28 or the air flow path 29 to block the gas flow path 28 or the air flow path 29, or adheres to the surface of the gas flow path 28 or the cathode 25, the anode Since the gas as the fuel gas or the oxidizing gas cannot be supplied to the 24 or the cathode 25 through the gas passage 28 or the air passage 29, the electrochemical reaction in the electrolyte member 23 is inhibited. There was also a problem that efficiency deteriorated.

The present invention has been completed in view of the above-described problems of the prior art, and its object is to provide a compact and robust fuel cell container capable of accommodating an electrolyte member, and to provide an even supply of gas and a fuel cell container. The present invention provides a container for a fuel cell having high reliability and a fuel cell and an electronic device using the same.

The present invention provides a base body comprising a ceramic having a concave portion on one surface side for accommodating an electrolyte member having first and second electrodes on one and the other main surface, respectively; A first fluid passage formed from the bottom of the concave portion opposite the one main surface of the electrolyte member to the outer surface of the base body; A first wiring conductor having one end disposed on a bottom surface of the concave portion facing the first electrode of the electrolyte member, and the other end led to an outer surface of the base body; A lid body which hermetically seals the recessed portion provided to cover the recessed portion on one surface of the base body around the recessed portion; A second fluid passage formed from one side of the lid body opposite to the other main surface of the electrolyte member from the outer surface of the lid body; A second wiring conductor having one end disposed on one side of the lid opposing the second electrode of the electrolyte member and the other end led to an outer surface of the lid body; And a porous body disposed on the base body or the cover body so as to cover a side from which the oxidizing gas is supplied in the first fluid passage or the second fluid passage.

In the present invention, a moisture absorbent is preferably attached to an inner wall of the first fluid passage or the second fluid passage on the side where the porous body is arranged.

In the present invention, the moisture absorbing material is characterized in that its thickness is 10% or less of the opening area in the cross section of the first fluid passage or the second fluid passage.

The present invention provides a base body comprising a ceramic having a concave portion on one surface side for accommodating an electrolyte member having first and second electrodes on one and the other main surface, respectively; A first fluid passage formed from the bottom of the concave portion opposite the one main surface of the electrolyte member to the outer surface of the base body; A first wiring conductor having one end disposed on a bottom surface of the concave portion facing the first electrode of the electrolyte member, and the other end led to an outer surface of the base body; A lid body which hermetically seals the recessed portion provided to cover the recessed portion on one surface of the base body around the recessed portion; A second fluid passage formed from one side of the lid body opposite to the other main surface of the electrolyte member from the outer surface of the lid body; A second wiring conductor having one end disposed on one side of the lid opposing the second electrode of the electrolyte member and the other end led to an outer surface of the lid body; And a porous body disposed in the base body and the cover body so as to cover at least one opening of the first fluid passage or the second fluid passage.

In the present invention, the base member and the lid member have a bending strength of 200 MPa or more.

In the present invention, the base body and the cover body are made of an aluminum oxide sintered body having a relative density of 90% or more.

In the present invention, the base body and the cover body is characterized in that the thickness is 0.2 ~ 5mm.

In the present invention, the first wiring conductor is formed so as to protrude 10 µm or more from the bottom of the concave portion of the base body.

In the present invention, the second wiring conductor is formed to protrude 10 µm or more from one surface of the lid.

In the present invention, the porous body is characterized in that the maximum diameter of the pores is 500㎛ or less.

In the present invention, the porous body is characterized in that the porosity is 10% or more.

The present invention includes an electrolyte member having first and second electrodes on one and the other main surface, respectively, and the fuel cell container described above.

The electrolyte member is accommodated in the concave portion of the container for the fuel cell, so that the electrolyte member is disposed between the one main surface and the first fluid passage of the electrolyte member and between the other main surface and the second fluid passage of the electrolyte member. The concave portion of the base body is disposed so that the fluid can be exchanged, the first electrode is electrically connected to the first wiring conductor, and the second electrode is electrically connected to the second wiring conductor. A fuel cell characterized by providing the lid so as to cover the recessed portion on one side of the periphery.

The present invention is an electronic apparatus characterized by having the above-described fuel cell as a power source.

According to the present invention, a base body made of ceramic having a concave portion on one side thereof to accommodate an electrolyte member having first and second electrodes on one and the other main surface, respectively, and the concave portion is covered on the upper surface around the concave portion of the base body. It is provided with the cover body which seals a recessed part provided in an airtight manner. Therefore, by hermetically sealing the inside of the fuel cell container, there is no leakage of fluid such as gas, and there is no need to provide a container such as a package other than this container. In this way, it is possible to obtain a fuel cell which can operate efficiently and is effective for miniaturization. Further, since a plurality of electrolyte members can be housed in a housing formed of a base body made of ceramic having a recessed portion on the upper surface and a lid body sealing the recessed portion, the electrolyte member can be exposed to the outside of the container and be damaged. The mechanical reliability of the fuel cell as a whole is improved. In addition, since there is no unnecessary electrical contact to the electrolyte member itself except for the first and second wiring conductors having one end arranged inside the container including the recess and the cover body, a fuel cell having high reliability and stability can be obtained. Further, by using ceramic as a constituent material of the fuel cell container, a fuel cell excellent in corrosion resistance to fluids including various gases can be obtained.

Further, the first fluid flow path is formed from the bottom of the concave portion facing one main surface of the electrolyte member to the outer surface of the base body, and from the one surface of the cover body opposite the other main surface of the electrolyte member to the outer surface of the lid body. Two fluid flow paths are provided. Therefore, since each of the plurality of fluid flow paths is provided on the inner wall surfaces facing each other with the electrolyte member interposed therebetween, the uniform supplyability of the fluid supplied to the electrolyte member can be improved. According to such a fluid path, in order for the fluid to flow perpendicularly to the electrolyte member, for example, when the fluid is hydrogen gas and air (oxygen) gas, the first and second electrodes respectively have one side and the other main surface of the electrolyte member. There is an effect that a predetermined stable output voltage can be obtained without the respective gas partial pressures supplied being lowered. In addition, since the pressure of the fluid to be supplied, for example, the gas partial pressure, is stable, the distribution of the internal temperature of the container for fuel cells becomes uniform, and as a result, the thermal stress generated in the electrolyte member can be suppressed and the reliability of the fuel cell can be improved. Can be. In addition, each fluid flow path is formed in the base body and the cover body. Therefore, it is excellent in the sealing property of each flow path, and the two kinds of raw material fluids (for example, oxygen gas, hydrogen gas, methanol, etc.) which should be originally separated in the flow path are mixed, so that the function as a fuel cell is not expressed. There is no work. In addition, there is no risk of ignition or explosion after the combustible fluid is mixed at a high temperature, thereby providing a safe fuel cell.

Moreover, in this invention, a porous body is arrange | positioned in a base body or a cover body so that the 1st fluid flow path or the 2nd fluid flow path may cover the side to which the oxidizing gas is supplied. Therefore, since the porous body prevents the dust from entering the atmosphere into the fluid passage on the side to which the oxidizing gas is supplied, the fluid passage on the side to which the oxidizing gas is supplied is closed or dust or the like is supplied to the oxidizing gas supply side. It will not adhere to the surface of an electrode. As a result, since only air as an oxidizing gas can be supplied effectively from the atmosphere into the fluid passage on the side to which the oxidizing gas is supplied, it has the effect of promoting electrical reaction and generating high efficiency power generation.

According to this invention, the porous body is arrange | positioned in at least one of a base body and a cover body so that the opening of at least one of a 1st fluid flow path and a 2nd fluid flow path may be covered. Therefore, it is possible to prevent dust or the like from entering the first fluid passage or the second fluid passage by the porous body, and the dust or the like closes the first fluid passage or the second fluid passage, or the surface of the first electrode or the second electrode. Can be effectively prevented. As a result, since only the source gas can be effectively supplied into the first fluid passage or the second fluid passage, the electrical reaction can be promoted and the power generation can be performed with high efficiency.

In addition, the inflow rate of the source gas into the first fluid passage or the second fluid passage can be controlled well by the porous body, and the inflow rate of the source gas into the first fluid passage or the second fluid passage is increased. The nonuniformity can be effectively suppressed in the portion close to the supply side and the source gas can be uniformly introduced into all the first fluid passages and the second fluid passages. As a result, electric reaction can be performed uniformly to the whole electrolyte member, and more efficient power generation can be performed.

Further, according to the present invention, the moisture absorbing material is attached to the inner wall of the first fluid passage or the second fluid passage on the side where the porous body is disposed. Therefore, in the electrolyte member, water vapor, water, and the like generated by the electrochemical reaction are absorbed by the moisture absorbing material, thereby preventing the air passage from being closed and effectively supplying air from the atmosphere as an oxidizing gas. For this reason, electrochemical reaction can be accelerated | stimulated and it has the effect of being able to generate high efficiency.

According to the present invention, a fuel cell of the present invention accommodates an electrolyte member in a concave portion of a container for a fuel cell of the present invention, between one main surface of the electrolyte member and the first fluid passage, and the other main surface of the electrolyte member and the second fluid. Each fluid is disposed between the flow paths and electrically connects the first electrode to the first wiring conductor and the second electrode to the second wiring conductor, respectively, and is recessed on the upper surface around the recess of the base body. This is done by covering the part and installing a cover. Therefore, the fuel cell container of the present invention as described above is compact, robust, and has a reliable fuel capable of uniformly supplying gas, uniform temperature gradient in the fuel cell container, and high efficiency electrical connection. A battery can be obtained.

Therefore, the fuel cell container and fuel cell of the present invention are excellent in compactness, simplicity and safety, and can produce a fuel cell that can be stably operated for a long time by equal supply of fluid and high efficiency of electrical connection.

Since the electronic device of the present invention has the fuel cell of the present invention as a power source, it is compact, low in height, and stable to operate for a long time with the characteristics of the fuel cell container of the present invention as described above. It is possible to obtain an electronic device having excellent safety and convenience.

In addition, if the fuel cell that is provided as a power source is provided with at least one of the base body and the cover body with external connection terminals (anode terminal and cathode terminal), electrical connection can be easily made to the circuit board of the electronic device. This becomes possible. Therefore, the fuel cell can be easily replaced with a new one without any facility equipped with special safety equipment, and the convenience of the electronic device can be improved.

In addition, since the metal layer can be formed in various shapes and electrical characteristics inside the base body of the fuel cell container by a metallization method or the like, an electronic circuit element functioning as resistance, capacitance, inductance, or the like inside the base body. Can be formed. Therefore, for example, when a large capacity capacitor is formed in parallel with the fuel cell, when the current output from the fuel cell is insufficient, the insufficient current can be compensated for to secure the current supply according to the target output current. In addition, since the boosting circuit can be formed, a voltage necessary for the electronic device can be ensured.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1A to 1C are cross-sectional views showing a fuel cell container of one embodiment of the present invention and a fuel cell using the same. 1A to 1C, reference numeral 1 denotes a fuel cell, reference numeral 2 denotes a fuel cell container, reference numeral 3 denotes an electrolyte member, reference numeral 4 denotes a first electrode, reference numeral 5 denotes a second electrode, and reference numeral 6 denotes a base. Sieve, reference numeral 7 denotes a cover body, reference numeral 8 denotes a first fluid passage, reference numeral 9 denotes a second fluid passage, reference numeral 10 denotes a first wiring conductor, reference numeral 11 denotes a second wiring conductor, and reference numeral 12 denotes a porous body. It is a sieve.

In the electrolyte member 3 according to the present invention, for example, a fuel electrode (not shown) serving as an anode side electrode and an air electrode (not shown) serving as a cathode side electrode are integrally formed on both main surfaces of an ion conductive film (exchange membrane). It is formed. The first electrode 4 is formed on the lower main surface, which is one main surface of the electrolyte member 3, to face the fuel electrode. The second electrode 5 is formed on the upper main surface, which is the other main surface of the electrolyte member 3, to face the air electrode. In addition, the electric current generated by the electrolyte member 3 can flow to the first electrode 4 and the second electrode 5 and can be drawn out to the outside.

The ion conductive membrane (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 trade name "Nafion" (manufactured by DuPont). The anode and the cathode are gas diffusion electrodes in a porous state, and have a function of both a porous catalyst layer and a gas diffusion layer. These anodes and cathodes are composed of a porous body in which conductive fine particles carrying a catalyst such as platinum, palladium, or an alloy thereof, such as carbon fine particles, are held by a hydrophobic resin binder such as polytetrafluoroethylene. .

The first electrode 4 on the lower main surface of the electrolyte member 3 and the second electrode 5 on the upper main surface of the electrolyte member 3 hot press a carbon electrode to which catalyst fine particles such as platinum or platinum-ruthenium are added. Or a method of applying or transferring a mixture of a carbon electrode material to which catalyst fine particles such as platinum or platinum-ruthenium and a solution in which an electrolyte material is dispersed is applied or transferred onto an electrolyte.

The fuel cell container 2 is composed of a base body 6 and a lid 7 having a recessed portion on an upper surface side, which is one surface side, and serves to seal the airtight member by mounting the electrolyte member 3 inside the recessed portion. , Aluminum oxide (Al ₂ O ₃ ) sintered body, mullite (3Al ₂ O ₃ ㆍ 2SiO ₂ ) sintered body, silicon carbide (SiC) sintered body, aluminum nitride (AlN) sintered body, silicon nitride (Si ₃ N ₄ ) sintered body And a ceramic material such as a glass ceramic sintered body.

Also, a glass ceramic sintered body is made to Examples, but the glass component and filler (filler) component, glass component, e.g., SiO ₂ -B ₂ O _{3 based, SiO 2 -B 2 O 3 -Al} 2 O 3 based, SiO ₂ - B ₂ O ₃ -Al ₂ O ₃ -MO system (wherein M represents Ca, Sr, Mg, Ba or Zn), SiO ₂ -Al ₂ O ₃ -M ¹ OM ² O system (wherein 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 OM ² O-based, provided that M ¹ and M ² are Same), SiO ₂ -B ₂ O ₃ -M ³ ₂ O system (wherein M ³ represents Li, Na or K), SiO ₂ -B ₂ O ₃ -Al ₂ O ₃ -M ³ ₂ O system (However, M ³ is the same as above), Pb-based glass, Bi-based glass and the like.

In addition, as a filler component, for example, Al ₂ O _3, SiO _2, 1 kind selected from ZrO _2, and complex oxide, Al ₂ O ₃ and SiO ₂ in the composite oxide, TiO ₂ and alkaline earth metal oxides, alkaline earth metal oxide And complex oxides containing the foregoing (eg, spinel, mullite, cordierite) and the like.

The fuel cell container 2 is composed of a base body 6 and a lid body 7 having a fouling portion. The recess is hermetically sealed by covering the recess around the recess of the base 6 and providing the lid 7. Particularly, bonding to metal bonding materials such as solder and silver solder, bonding to resin materials such as epoxy resin, sealing rings made of iron alloy and the like on the upper surface around the recesses, and welding by seam welding, electron beam or laser, etc. The cover body 7 is attached to the base body 6 by the method of the above. Moreover, you may form the recessed part similar to the base body 6 also in the cover body 7.

It is preferable that the base body 6 and the lid 7 have a thin thickness, respectively, and the bending strength, which is a mechanical strength, is 200 MPa or more in order to enable the height of the fuel cell 1 to be reduced.

The base body 6 and the lid 7 are preferably formed of, for example, an aluminum oxide sintered body made of a dense material having a relative density of 90% or more. In addition, the relative density of the base 6 and the lid 7 is more preferably 95% or more. In that case, for example, the rare earth oxide powder or the sintering aid is first added to the aluminum oxide powder and mixed to prepare a raw material powder of the aluminum oxide sintered body. Subsequently, an organic binder and a dispersion medium are added to the raw material powder of the aluminum oxide sintered compact, mixed and pasted, and the paste is prepared by a doctor blade method or an organic binder is added to the raw material powder by press molding, rolling molding or the like. The green sheet of predetermined thickness is produced. And the through-holes as the 1st fluid flow path 8 and the 2nd fluid flow path 9 with respect to this green sheet by the drilling method by a metal mold | die, the drilling method by a micro drill, the drilling method by laser light irradiation, etc., and A through hole for arranging the first wiring conductor 10 and the second wiring conductor 11 is formed.

The first wiring conductor 10 and the second wiring conductor 11 are preferably formed of tungsten and / or molybdenum in order to prevent oxidation. In that case, for example, a conductive paste prepared by adding 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 an inorganic component is prepared. do. This conductor paste is filled into the through holes of the green sheet to form a via conductor as a through conductor.

In these conductor pastes, in order to improve the adhesiveness of the base body 6 and the lid | cover 7 with the ceramic, the composition powder similar to the aluminum oxide powder and the ceramic component which forms the base body 6 and the lid | cover 7 is used, For example, it can also add in the ratio of 0.05-2 volume%.

In addition, formation of the 1st wiring conductor 10 and the 2nd wiring conductor 11 in the surface layer and inner layer of the base body 6 and the cover body 7 fills a through-hole, and forms a via conductor. The same conductor paste is printed and applied to a green sheet in a predetermined pattern by a method such as screen printing, gravure printing, or the like before and after or simultaneously with the following.

Subsequently, the sheet-shaped molded article of a predetermined number of sheets printed and filled with a conductor paste is aligned and laminated and pressed. Then, this laminated body is baked, for example in the non-oxidizing atmosphere at the temperature of 1200-1500 degreeC, and the base body 6, the lid | cover 7, and the 1st wiring conductor of the desired ceramic ( 10) The second wiring conductor 11 is obtained.

In addition, it is preferable that the thickness of the base body 6 and the lid | cover 7 which consist of ceramics shall be 0.2 mm or more and 5 mm or less. If the thickness is less than 0.2 mm, the strength tends to decrease, so that cracks and the like occur in the base body 6 and the cover 7 due to the stress generated when the cover body 7 is provided in the base body 6. It tends to be easy to do. On the other hand, if the thickness exceeds 5 mm, it becomes difficult to reduce the thickness and the height, and thus it becomes unsuitable as a fuel cell to be mounted in a small portable device, and the heat capacity becomes large. Therefore, the electrochemical reaction conditions of the electrolyte member 3 It tends to be difficult to quickly set to an appropriate temperature corresponding to.

The first wiring conductor 10 and the second wiring conductor 11 are electrically connected to the first electrode 4 and the second electrode 5 of the electrolyte member 3, respectively, and are generated by the electrolyte member 3. It functions as a conductive path for drawing current out of the fuel cell container 2.

One end of the first wiring conductor 10 is disposed at a portion of the base member 6 opposite to the first electrode 4 of the electrolyte member 3 at the bottom of the recessed portion of the base body 6, and the other end thereof is the outer surface of the base body 6. It is derived from and formed. As described above, the first wiring conductor 10 is formed integrally with the base body 6, so that the first wiring conductor 10 is easily contacted with the first electrode 4. It is preferable to form so that 10 micrometers or more may protrude from the bottom face of the recessed part of 6). In order to obtain the height, as described above, when printing and coating the conductor paste, the printing conditions may be set to be thick. In addition, it is preferable that a plurality of first wiring conductors 10 are disposed to face the first electrodes 4 to reduce electrical losses caused by the first wiring conductors 10, and the base of the first wiring conductors 10 is reduced. About the penetrating part of the sieve 6, it is preferable to set it as 50 micrometers or more in diameter.

In addition, one end of the second wiring conductor 11 is disposed at a portion of the second wiring conductor 11 opposite to the second electrode 5 of the electrolyte member 3 on one side of the lid 7, and the other end thereof is the lid 7. Derived from the outer surface of the. Like the first wiring conductor 10, such a second wiring conductor 11 is also formed integrally with the lid body 7, and the second wiring conductor 11 is brought into contact with the second electrode 5. It is preferable to form it so that 10 micrometers or more may protrude from the lower surface of the cover body 7 easily. In order to obtain this protrusion height, as mentioned above, what is necessary is just to set so that printing conditions may become thick when printing and apply | coating a conductor paste and forming it. In addition, it is preferable that the second wiring conductor 11 be disposed to face the second electrode 5 to reduce the electrical loss caused by the second wiring conductor 11, and cover the second wiring conductor 11. It is preferable to set it as the diameter of 50 micrometers or more about the penetration part of the sieve 7.

The first wiring conductor 10 and the second wiring conductor 11 are formed of nickel on the exposed surface of the first wiring conductor 10 and the first wiring conductor when the metal having good corrosion resistance and wettability with a brazing material is attached by plating. The electrical connection with the conductor 10 and the 2nd wiring conductor 11, the 1st wiring conductor 10, the 2nd wiring conductor 11, and an external electric circuit can be made favorable. Therefore, it is preferable that the first wiring conductor 10 and the second wiring conductor 11 adhere a metal having good conductivity made of nickel to the exposed surface and having good corrosion resistance and good wettability with the brazing material by the plating method. Do.

Moreover, the electrical connection of these 1st wiring conductor 10 and the 1st electrode 4, and the electrical connection of the 2nd wiring conductor 11 and the 2nd electrode 5 are the base body 6 and the cover body ( 7) the electrolyte member 3 is inserted into the first wiring conductor 10 and the first electrode 4 by crimping contact, and the second wiring conductor 11 and the second electrode 5 by crimping contact. What is necessary is just to perform it by the structure of making it connect.

In addition, a first fluid passage 8 is disposed on the bottom of the recess of the base body 6 facing the first electrode 4, and on the bottom of the lid 7 facing the second electrode 5. The second fluid passage 9 is arranged. The first fluid passage 8 is formed from the bottom of the concave portion of the base body 6 to the outer surface of the base body 6, and the second fluid passage 9 is formed from the lower surface of the lid 7 from the lid body. It is formed over the outer surface of (7). These first and second fluid flow paths 8, 9 are formed by through holes or grooves formed in the base body 6 and the cover body 7, respectively, and are fuel gases, for example, reformed gas containing a lot of hydrogen, or It is formed as a passage of a fluid supplied to the electrolyte member 3, such as an oxidizing gas, for example, air, or as a passage of a fluid discharged from the electrolyte member 3 after the reaction, such as water generated by the reaction.

Through-holes or grooves formed in the base body 6 and the lid body 7 as the first fluid passage 8 and the second fluid passage 9 are equal to the electrolyte member 3 in the fuel gas, the oxidizing gas, or the like. The diameter and number of through holes, or the width, depth and arrangement of the grooves may be determined according to the specification of the fuel cell 1 so that the fluid can be supplied.

In the fuel cell container 2 and the fuel cell 1 of the present invention, the first fluid passage 8 and the second fluid passage 9 are preferably fluid at a uniform pressure to the electrolyte member 3. In order to flow, it is good to make it diameter diameter 0.1mm or more, and to arrange | position a regular space | interval.

 Thus, the 1st fluid flow path 8 opposes the lower main surface in which the 1st electrode 4 of the electrolyte member 3 was formed, and the 2nd fluid flow path 9 opposing the upper main surface in which the 2nd electrode 5 was formed. By forming a, it is possible to exchange fluid between the lower and upper main surfaces of the electrolyte member 3 and the first and second fluid passages 8, 9, and the fluid is supplied or discharged through the respective passages. . For example, in the case of supplying gas as a fluid, it is possible to prevent the gas partial pressure supplied to the first electrode 4 and the second electrode 5 of the electrolyte member 3 from dropping, so as to provide a predetermined stable output. Voltage can be obtained. In addition, since the gas partial pressure supplied is stabilized, the internal pressure of the fuel cell 1 becomes uniform, and as a result, the thermal stress generated in the electrolyte member 3 can be suppressed, thereby improving the reliability of the fuel cell 1. Can be.

In addition, in the present invention, as shown in Fig. 1A, the base body 6 preferably covers the flow passage on the side to which the oxidizing gas is supplied in the first fluid passage 8 or the second fluid passage 9. The porous body 12 is arrange | positioned at the outer surface of the cover body or the outer surface (outer surface of the cover body 7 in this embodiment) of the cover body 7. As a result, when the oxidizing gas is supplied through the second fluid passage 9, the porous body 12 prevents the entry of atmospheric dust and the like into the second fluid passage 9. Therefore, dust or the like does not enter the second fluid passage 9, and dust does not close the second fluid passage 9 or adhere to the surface of the second electrode 5. As a result, since only air can be effectively supplied from the atmosphere as the oxidizing gas into the second fluid passage 9, the electrical reaction can be promoted, and it has the effect of generating high efficiency power generation.

In addition, in this invention, as shown to FIG. 1A-FIG. 1C, in the 1st fluid flow path 8 and the 2nd fluid flow path 9 in at least one outer surface of the base body 6 and the lid | cover body 7, The porous body 12 may be arrange | positioned so that at least one opening may be covered. That is, as shown in FIG. 1A, the porous body 12 covers the outer surface of the base body 6 so as to cover the side to which the oxidizing gas is supplied in the first fluid passage 8 or the second fluid passage 9. Or it is arrange | positioned at the outer surface of the lid | cover 7 (outer surface of the lid | cover 7 in this embodiment). That is, the porous body 12 is arrange | positioned at the outer surface of the cover body 7 so that the opening of the 1st fluid flow path 8 may be covered. Or the porous body 12 is arrange | positioned at the outer surface of the base body 6 so that the opening of the 1st fluid flow path 8 may be covered, as shown to FIG. 1B. Alternatively, as shown in FIG. 1C, the porous body 12 includes an outer surface and a lid 7 of the base body 6 so as to cover openings in both the first fluid passage 8 and the second fluid passage 9. Are arranged on the outer surface of each). As a result, the porous body 12 can prevent dust and the like from entering the first fluid passage 8 and the second fluid passage 9, and the dust and the like can be prevented by the first fluid passage 8 and the second fluid passage. Closing the fluid passage 9 or adhering to the surface of the first electrode 4 or the second electrode 5 can be effectively prevented. As a result, since only the source gas can be effectively supplied into the first fluid passage 8 and the second fluid passage 9, the reaction can be promoted and the power generation can be performed with high efficiency.

In addition, the porous body 12 can satisfactorily control the inflow rate of the source gas into the first fluid passage 8 and the second fluid passage 9, so that the first fluid passage 8 of the source gas can be controlled. The inflow rate into the second fluid passage 9 is effectively suppressed from nonuniformity in the portion close to and far from the supply side of the source gas so that the raw material is uniformly applied to all the first fluid passages 8 and the second fluid passages 9. Gas can be introduced. As a result, electric reaction can be performed uniformly in the whole electrolyte member 3, and power generation of high efficiency can be performed.

The porous body 12 is made of a porous material having air permeability such as, for example, sponge rubber or porous ceramic, and is, for example, a first fluid passage 8 or a second fluid passage 9 via a rubber adhesive, or It is adhere | attached on the outer surface of the base body 6 and the cover body 7 so that the opening of the 1st fluid flow path 8 or the 2nd fluid flow path 9 may be covered.

In addition, the porous body 12 has a maximum pore diameter of 500 in order to prevent dust or the like from entering the air in the first fluid passage 8 or the second fluid passage 9 and to efficiently distribute the oxidizing gas. It is preferable that it is micrometer or less, and it is preferable that porosity is 10% or more. When the maximum porosity is 500 µm or more, large dust in the air easily enters the first fluid passage 8 or the second fluid passage 9, so that the first fluid passage 8 or the second fluid passage 9 is It becomes easy to close or adhere to the surface of the 1st electrode 4 or the 2nd electrode 5, and it is clogged by the dust of air | atmosphere, and the efficiency of distribution of oxidizing gas falls, and power generation efficiency falls easily. If the porosity is 10% or less, the efficiency of oxidizing gas distribution decreases, and the power generation efficiency tends to decrease.

In the present invention, the moisture absorbent is preferably attached to the inner wall of the first fluid passage 8 or the second fluid passage 9 on the side where the porous body 12 is disposed. As a result, the first and second fluid flow paths 8 and 9 serving as air flow paths can be absorbed and removed by the hygroscopic material such as water vapor and water generated by the electrochemical reaction in the electrolyte member 3. ) Can be effectively prevented. Therefore, it is possible to effectively prevent the surfaces of the electrodes of the first and second electrodes 4 and 5 from being covered with water (H ₂ O), and to wait through the first and second fluid flow paths 8 and 9. Since air can be effectively supplied from the middle as oxidizing gas, the electrochemical reaction in the electrolyte member 3 can be promoted, and high efficiency power generation can be performed.

As the hygroscopic material, a material which easily absorbs water (H ₂ O) such as silica gel, alumina, clay, activated carbon, paper, wood flour, etc. may be used. In particular, inorganic powders such as silica gel, alumina, clay, etc. since the adjustment of the absorption area by adjusting the water (H ₂ O) the easy is preferable in that it is easy to obtain the desired hygroscopic properties.

When the moisture absorbent material is attached to the inner walls of the first fluid passage 8 and the second fluid passage 9, uniformity of the flow of air as oxidizing gas from the atmosphere through the first and second fluid passages 8 and 9 is achieved. It is preferable to attach the moisture absorbents to all the first and second fluid flow paths 8 and 9 in order to maintain the property, and the thickness of the moisture absorbents needs to reduce the influence of pressure loss when supplying air as oxidizing gas. Therefore, a thickness of 10% or less of the opening area in the cross section of the first and second fluid passages 8 and 9 is preferable.

In addition, in order to promote the evaporation of water from the moisture absorbent by the flow of air, it is preferable to attach the moisture absorbent to the entire inner walls of the first and second fluid passages 8 and 9. As a result, when the fuel cell container 2 and the fuel cell 1 of the present invention are used in a small type such as, for example, a portable direct methanol fuel cell (DMFC), the fuel cell container 2 and the fuel cell 1 of the present invention are, for example, 10 ml of methanol. In addition to being able to operate for a time, the amount of water (H ₂ O) produced at that time also becomes a trace amount of 1 ml with respect to 1 g of methanol. Therefore, the water (H ₂ O) absorbed by the hygroscopic material becomes an amount of water which can be sufficiently evaporated by blowing with a fan, and thus there is no problem in continuous operation.

Further, the porous body 12 is passed through the fine particles of metal such as platinum and ruthenium as catalysts in the pores of the porous body 12 disposed on the side of the first electrode 4 or the second electrode 5 serving as the fuel electrode. The source gas can be ionized, and the electrochemical reaction can be promoted, so that the power generation efficiency can be increased.

Moreover, by making the porous body 12 detachable, it is possible to easily replace the porous body 12 in which the flowability of the raw material gas is reduced by dust or the like, and the power generation efficiency can be maintained for a long time.

With the above structure, the small and robust fuel cell container 2 which can accommodate the electrolyte member 3 as shown to FIG. 1A-FIG. 1C is obtained, and the fuel cell 1 of this invention which can control high efficiency is possible. ) Is obtained.

In addition, by using the fuel cell 1 of the present invention as a power source of the electronic device, compactness, simplicity and safety are excellent, and evenly supply of fluid and high efficiency electrical connection are possible. Moreover, it can operate stably over a long term, and can be made excellent in safety and convenience.

Next, the electronic device of the present invention having the fuel cell 1 as a power source will be described.

Since the electronic device of the present invention has the above-described fuel cell 1 as a power source, the electronic device of the present invention is compact, low in height and long-term with the characteristics of the fuel cell container 2 of the present invention as described above. The electronic device which is excellent in safety and convenience which can be operated stably over is obtained.

In addition, when the fuel cell 1 having a power source is provided with an external connection terminal (anode terminal and cathode terminal) on at least one of the base body 6 and the cover body 7, the circuit board of the electronic device is provided. Electrical connection is easily possible, and attachment and detachment are possible. Therefore, the fuel cell 1 can be replaced easily with a new one without any facility equipped with special safety equipment, and the convenience of the electronic device can be improved.

In addition, since the metal layer can be formed in various shapes and electrical characteristics inside the base body 6 of the fuel cell container 2 by a metallization method or the like, the base body 6 can be formed as a resistance, capacitance or inductance. A functioning electronic circuit element can be formed. Thus, for example, when a large capacity capacitor is formed in parallel with the fuel cell 1, when the current output from the fuel cell is insufficient, the insufficient current can be compensated to secure the current supply according to the target output current. In addition, since the boosting circuit can be formed, a voltage necessary for the electronic device can be ensured.

In addition, when forming resistance, capacitance, or inductance in the inside of the base body 6 in this way, it is preferable that the base body 6 consists of glass ceramics.

Moreover, as an electronic device of this invention, portable electronic devices, such as toys, such as a mobile telephone, PDA (Personal Digital Assistants), a digital camera, a video camera, and a game machine, are also portable, including a notebook PC (personal computer). There are electronic devices such as in-printer, fax television, communication equipment, audio and video equipment, electric appliances such as electric fans, and electric tools.

These electronic devices have recently been used to add a function of moving picture display using a liquid crystal display device or the like. Since such a moving picture display consumes a lot of power, the electronic device of the present invention can not be operated in a short time in an electronic device using a conventional storage battery. The electronic device of the present invention provides a fuel cell 1 capable of supplying power for a very long time. In addition, even if moving pictures are displayed, a long time operation is possible.

For example, in the case of a mobile phone, there is a central processing unit (CPU), a control unit, a random access memory (RAM), a read-only memory (ROM), an input unit for inputting data manipulated by a user to the CPU, an antenna, The wireless unit which demodulates the signal received by the antenna and supplies it to the control unit, modulates the signal supplied from the control unit and transmits the signal from the antenna, a speaker that sounds based on a sound signal from the control unit, and lights by the control unit. A light-emitting diode (LED) which is turned off or flashes, a display unit which displays information by a signal from a controller, a vibrator vibrated by a drive signal from the controller, and converts a user's voice into a voice signal and transmits it to the controller. The voice signal from the control unit is composed of a handset unit for converting and outputting voice and a power supply unit for supplying power to each unit. By assembling the fuel cell and the fuel cell container 2 of the present invention to the power supply unit, the fuel cell 1 and the fuel cell container 2 are excellent in compactness, simplicity and safety, and can be supplied with equality of fuel and high efficiency electrical connection. It is possible to supply power for a long time by the small size, low height and light weight of the mobile phone is possible.

In addition, considering that a recent mobile phone is sufficient in terms of miniaturization and low height, a function other than a telephone function such as a camera or a video is used in a space created by miniaturizing and reducing the fuel cell 1 in this way. It is possible to newly assemble an electronic component having a structure, and further multifunctionalization can be performed.

In addition, instead of assembling electronic components newly, 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 which can make the impact resistance when an impact is applied to the cellular phone main body by dropping or the like, the waterproofness when using in the rain, etc., more robust than before.

In addition, since the electric circuit part inside the mobile phone main body can be made small, the restrictions on the external appearance of the mobile phone main body are reduced. For example, the design of the mobile phone is easy to be gripped by an elderly person or a child. The external shape can be achieved.

In addition, when the structure of the power supply unit is configured such that the fuel cell 1 and the fuel cell container 2 are detachable as described above, the spare fuel cell 1 and the fuel cell container 2 are prepared. In this case, when the battery is completely discharged or the like, the spare fuel cell 1 and the fuel cell container 2 can be easily replaced or the fuel cell 1 can be taken out to supply or replace fuel. It is possible to make a call and the like, and it is excellent in convenience as compared with using a conventional storage battery as a power source.

In addition, the used and used fuel cell 1 can be reused immediately by replenishing fuel, so that it is more convenient to use than charging, and the resource can be effectively used. In addition, there is an advantage that it can be used in emergencies such as long-term power outage due to natural disasters or outdoors.

In addition, in the case of a notebook PC (personal computer), the personal computer main body, a first housing accommodating a keyboard for inputting predetermined data into the personal computer main body, and the data input by the keyboard or the personal computer main body are processed. A second housing accommodating a display for displaying the data, the second housing being provided to be openable and openable in the first housing, and having a power supply unit for supplying power to each part in the first housing. The fuel cell 1 and the fuel cell container 2 are assembled to the power supply unit. In this case, similar to the mobile phone, the fuel cell 1 and the fuel cell container 2 assembled in the electronic device of the present invention are excellent in compactness, simplicity, and safety, and provide equal fuel supply and high efficiency electrical connection. This enables long-term power supply, which enables the compact, low-profile, light-weight, and multi-functionality of the notebook PC (personal computer) main body. It can also supply over a long period of time, and it can be set as a notebook PC (personal computer) with high convenience, such as being easy to see a display, and having a small weight and volume burden at the time of carrying.

In addition, in the case where the structure of the power supply unit is configured such that the fuel cell 1 and the fuel cell container 2 are detachable, the fuel cell 1 and the fuel cell container 2 of the present invention are provided in advance. In the situation of using only secondary batteries such as outdoors or inside a moving body such as an airliner, there is an advantage that it is possible to supply power for a long time dramatically compared to the conventional. Moreover, since safety is excellent also when using in a public place in this way, it becomes excellent in the very convenience which can be used without being restrict | limited.

 In addition, this invention is not limited to the example of the above-mentioned embodiment, As long as it does not deviate from the summary of this invention, even if various changes are made, it does not interfere at all. For example, since the entire fuel cell 1 is thinned in the first fluid passage 8 and the second fluid passage 9, an inlet from the side of the base 6 or the lid 7 may be formed. good. According to this, it becomes effective in achieving miniaturization especially for a portable electronic device. In addition, with respect to the 1st and 2nd wiring conductors 10 and 11, the other end guide | induced to the outer surface of the base body 6 and the lid | cover 7 may be arrange | positioned so that it may draw out to the side surface of the same side, respectively. As a result, a fuel cell capable of integrating wiring, a flow path, and the like on one side of the fuel cell, miniaturization and protection of the junction to the outside, a highly reliable design, and stable operation for a long time ( 1) becomes.

Further, a plurality of electrolyte members 3 are accommodated in the recesses of the base body 6 and electrically connected to each other by the first and second wiring conductors 10 and 11 to obtain high voltage or high current output as a whole. You may also do it.

2A to 2C are cross-sectional views of fuel cell containers and fuel cells using the same according to another embodiment of the present invention. The fuel cell container 2 has at least one of the first fluid passage 8 'and the second fluid passage 9' at the lower main surface of the electrolyte member 3 on the bottom of the recess or the bottom of the lid 7 '. Alternatively, at least one of the base 13 and the lid 7 'is formed in the opening 13 and the base 6' and the lid 7 'which have a plurality of openings having the same width and the same width having the same length as opposed to the upper main surface. The connection part 14 which connects one end of the formed some opening, and the other end, respectively, and the fluid formed over the outer surface of at least one of the base body 6 'and the cover body 7' from one of the connection parts 14 The base body 6 'and the cover, as well as the outlet part (not shown) formed from the introduction portion 15 and the other side of the base body 6' and the cover body 7 'over at least one outer surface thereof. The porous body 12 may be arrange | positioned so that the opening part 13 formed in at least one of the sieves 7 'may be covered. Further, the electrolyte member 3 is accommodated in the recess of the base body 6 'having the recess, and the first and second electrodes 4 and 5 are connected to the first and second wiring conductors 10' and 11 '. The fuel cell 1 'may be configured to be electrically connected to each other.

That is, as shown in FIG. 2A, the porous body 12 covers the base body 6 'so as to cover the side to which the oxidizing gas is supplied in the 1st fluid flow path 8' or the 2nd fluid flow path 9 '. ) Or on the cover 7 '(cover 7' in the present embodiment). That is, the porous body 12 is arrange | positioned at the cover body 7 'so that the opening of the 1st fluid flow path 8' may be covered. Or the porous body 12 is arrange | positioned at the base body 6 'so that the opening of the 1st fluid flow path 8' may be covered, as shown to FIG. 2B. Alternatively, as shown in FIG. 2C, the porous body 12 covers the base body 6 'and the lid so as to cover the openings of both the first fluid passage 8' and the second fluid passage 9 '. It is arrange | positioned at 7 ', respectively.

According to this, it is easy to supply fluid to the opening part 13 formed in the several groove shape by the fluid introduction part 15 and the connection part 14, and the several groove-shaped opening in the opening part 13 is the same. Since they are formed at equal intervals at the same width as the length, even when the inflow velocity of the fluid is high, the distance from the inlet section 15 to the outlet section becomes short, and the flow path resistance becomes small. As a result, the uniform supplyability of the fluid supplied to the electrolyte member 3 can be improved, and water (H ₂ O) generated by a chemical reaction when the air supplied as the oxidizing gas from the atmosphere is allowed to enter and exit. Drying can be removed continuously.

3A to 3B show cross-sectional views of a fuel cell container and a fuel cell using the same according to another embodiment of the present invention. In the fuel cell container 2 ", the electrolyte member 3 is accommodated in each recessed part of the base body 6" which has a some recessed part, and the 3rd wiring conductor 16 is spread over the edge part of the adjacent recessed part. ), And electrically connected between the first electrode 4 of the plurality of electrolyte members 3 or between the first electrode 4 and the second electrode 5, and are disposed at both ends. The fuel cell 1 "may be constituted by electrically connecting the first wiring conductor 10" and the second wiring conductor 11 "to each so as to take out the entire output to (3).

At that time, as shown in FIG. 3A, the porous body 12 covers the base body 6 which covers the side to which the oxidizing gas is supplied in the 1st fluid flow path 8 "or the 2nd fluid flow path 9". The outer surface of ") or the outer surface of the lid 7 " (outer surface of lid 7 " in the present embodiment) is provided. That is, the porous body 12 is the first fluid passage 8 ". It is arrange | positioned at the outer surface of the lid | cover 7 "so that the opening of the cover body may be made. Or the porous body 12 is a base so that the opening of the 1st fluid flow path 8" may be covered, as shown to FIG. 3B. The porous body 12 has openings on both sides of the first fluid passage 8 "and the second fluid passage 9", as shown in Fig. 3C. It is arrange | positioned at the outer surface of the base body 6 "and the outer surface of the cover body 7" so that it may cover.

According to this, wiring can be freely three-dimensionally by the first to third wiring conductors 10 ", 11 " and 16, so that the plurality of electrolyte members 3 can be arbitrarily connected in series or in parallel. As a result, since the overall output voltage and output current can be adjusted efficiently, the fuel cell container 2 "and the fuel cell capable of taking out the electrochemically generated electricity from the electrolyte member 3 to the outside favorably. (1 ").

 This invention can be implemented in other various forms, without deviating from the mind or main characteristics. Therefore, the above embodiments are merely examples in all respects, and the scope of the present invention is shown in the claims, and is not limited to the specification text at all. In addition, all the modifications and changes which belong to a claim are within the scope of the present invention.

According to the fuel cell container, the fuel cell and the electronic device of the present invention, it is a compact and robust fuel cell container capable of accommodating an electrolyte member. The fuel cell container also has an equal supply of gas, a uniform temperature gradient in the fuel cell container, and high efficiency. A highly reliable fuel cell container, a fuel cell and an electronic device using the same can be provided.

1A to 1C are cross-sectional views showing a fuel cell using the fuel cell container of one embodiment of the present invention.

2A to 2C are cross-sectional views showing a fuel cell using a fuel cell container according to another embodiment of the present invention.

3A to 3C are cross-sectional views showing a fuel cell using a fuel cell container according to another embodiment of the present invention.

4 is a cross-sectional view showing an example of a conventional fuel cell.

Claims (22)

A base body made of ceramic having a concave portion on one surface side for accommodating an electrolyte member having first and second electrodes on one and the other main surface, respectively; A first fluid passage formed from the bottom of the concave portion opposite the one main surface of the electrolyte member to the outer surface of the base body; A first wiring conductor having one end disposed on a bottom surface of the concave portion facing the first electrode of the electrolyte member, and the other end led to an outer surface of the base body; A lid body which hermetically seals the recessed portion provided to cover the recessed portion on one surface of the base body around the recessed portion; A second fluid passage formed from one side of the lid body opposite to the other main surface of the electrolyte member from the outer surface of the lid body; A second wiring conductor having one end disposed on one side of the lid opposing the second electrode of the electrolyte member and the other end led to an outer surface of the lid body; And And a porous body disposed on the base body or the cover body so as to cover a side on which the oxidizing gas is supplied in the first fluid passage or the second fluid passage. The fuel cell container according to claim 1, wherein the base body and the cover body have a bending strength of 200 MPa or more. The fuel cell container according to claim 1, wherein the base body and the cover body are made of an aluminum oxide sintered body having a relative density of 90% or more. The fuel cell container according to claim 1, wherein the base body and the cover body have a thickness of 0.2 to 5 mm. The fuel cell container according to claim 1, wherein the first wiring conductor is formed to protrude 10 mu m or more from the bottom of the concave portion of the base body. The fuel cell container according to claim 1, wherein the second wiring conductor is formed to protrude 10 mu m or more from one side of the lid. The fuel cell container according to claim 1, wherein the porous body has a maximum diameter of pores of 500 µm or less. The fuel cell container according to claim 1, wherein the porous body has a porosity of 10% or more. The fuel cell container according to claim 1, wherein a moisture absorbent is attached to an inner wall of the first fluid passage or the second fluid passage on the side where the porous body is disposed. 10. The fuel cell container according to claim 9, wherein the moisture absorbing material has a thickness of 10% or less of the opening area in the cross section of the first fluid passage or the second fluid passage. An electrolyte member having first and second electrodes on one and the other main surface, respectively; And Including the container for fuel cells according to claim 1, The electrolyte member is accommodated in the concave portion of the container for the fuel cell, so that the electrolyte member is disposed between the one main surface and the first fluid passage of the electrolyte member and between the other main surface and the second fluid passage of the electrolyte member. The concave portion of the base body is disposed so that the fluid can be exchanged, the first electrode is electrically connected to the first wiring conductor, and the second electrode is electrically connected to the second wiring conductor. A fuel cell, characterized in that the cover is provided so as to cover the recess on one side of the periphery. An electronic device comprising the fuel cell according to claim 11 as a power source. A base body made of ceramic having a concave portion on one surface side for accommodating an electrolyte member having first and second electrodes on one and the other main surface, respectively; A first fluid passage formed from the bottom of the concave portion opposite the one main surface of the electrolyte member to the outer surface of the base body; A first wiring conductor having one end disposed on a bottom surface of the concave portion facing the first electrode of the electrolyte member, and the other end led to an outer surface of the base body; A lid body which hermetically seals the recessed portion provided to cover the recessed portion on one surface of the base body around the recessed portion; A second fluid passage formed from one side of the lid body opposite to the other main surface of the electrolyte member from the outer surface of the lid body; A second wiring conductor having one end disposed on one side of the lid opposing the second electrode of the electrolyte member and the other end led to an outer surface of the lid body; And And a porous body disposed on at least one of the base body and the cover body to cover the opening of at least one of the first fluid passage and the second fluid passage. The fuel cell container according to claim 13, wherein the base body and the cover body have a bending strength of 200 MPa or more. The fuel cell container according to claim 13, wherein the base body and the cover body are made of an aluminum oxide sintered body having a relative density of 90% or more. The fuel cell container according to claim 13, wherein the base body and the cover body have a thickness of 0.2 to 5 mm. The fuel cell container according to claim 13, wherein the first wiring conductor is formed to protrude 10 mu m or more from the bottom of the concave portion of the base body. The fuel cell container according to claim 13, wherein the second wiring conductor is formed to protrude 10 mu m or more from one side of the lid. The fuel cell container according to claim 13, wherein the porous body has a maximum diameter of pores of 500 µm or less. The fuel cell container according to claim 13, wherein the porous body has a porosity of 10% or more. An electrolyte member having first and second electrodes on one and the other main surface, respectively; And A fuel cell container according to claim 13, The electrolyte member is accommodated in the concave portion of the container for the fuel cell, so that the electrolyte member is disposed between the one main surface and the first fluid passage of the electrolyte member and between the other main surface and the second fluid passage of the electrolyte member. The concave portion of the base body is disposed so that the fluid can be exchanged, the first electrode is electrically connected to the first wiring conductor, and the second electrode is electrically connected to the second wiring conductor. A fuel cell, characterized in that the cover is provided so as to cover the recess on one side of the periphery. An electronic device comprising the fuel cell according to claim 21 as a power source.