WO2005112169A1 - Conteneur de réception de combustible liquide pour cellule électrochimique, et système à cellule électrochimique - Google Patents

Conteneur de réception de combustible liquide pour cellule électrochimique, et système à cellule électrochimique Download PDF

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Publication number
WO2005112169A1
WO2005112169A1 PCT/JP2005/007691 JP2005007691W WO2005112169A1 WO 2005112169 A1 WO2005112169 A1 WO 2005112169A1 JP 2005007691 W JP2005007691 W JP 2005007691W WO 2005112169 A1 WO2005112169 A1 WO 2005112169A1
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WO
WIPO (PCT)
Prior art keywords
fuel
liquid fuel
fuel cell
liquid
suction port
Prior art date
Application number
PCT/JP2005/007691
Other languages
English (en)
Japanese (ja)
Inventor
Yukihiro Iwata
Suguru Nakao
Yasuo Yokota
Makoto Iyoda
Toshiaki Takasu
Hiroto Inoue
Original Assignee
Matsushita Electric Industrial Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co., Ltd. filed Critical Matsushita Electric Industrial Co., Ltd.
Priority to US10/572,497 priority Critical patent/US20070125360A1/en
Publication of WO2005112169A1 publication Critical patent/WO2005112169A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
    • H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
    • H01M8/04208—Cartridges, cryogenic media or cryogenic reservoirs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
    • H01M8/04186—Arrangements for control of reactant parameters, e.g. pressure or concentration of liquid-charged or electrolyte-charged reactants
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
    • H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

Definitions

  • the present invention relates to a liquid fuel storage container for a fuel cell that stores liquid fuel to be supplied to a liquid fuel direct supply type fuel cell, and a fuel cell system including the liquid fuel storage container.
  • a secondary battery such as a nickel-cadmium battery, a nickel-hydrogen battery, or a lithium-ion battery has been used as a power source for portable devices such as a mobile phone and a portable computer. Since these devices are often used with the power always on, there is a limit to extending the continuous use time of the portable device using the secondary battery.
  • such a liquid fuel direct supply type fuel cell stores liquid fuel in a container and is used for portable equipment, so that the posture of the fuel container is not constant. Therefore, when the remaining amount of the liquid fuel in the container becomes small, there may be a case where the liquid fuel does not exist in the fuel suction port portion, and it becomes difficult to stably supply the fuel to the power generation unit, and the operation of the device becomes unstable. There was a problem. Further, since the attitude of the fuel storage container is not constant as described above, the liquid fuel is stored in a container filled with a porous material, and the inside of the container and the power generation unit are connected by a fuel supply path having a capillary force. The structure to be used is considered. According to this structure, it is possible to obtain a liquid fuel direct supply type fuel cell capable of supplying a stable fuel irrespective of the attitude of the fuel cell itself and even when the remaining amount of the liquid fuel is small.
  • Fig. 14 shows an outline of the above configuration.
  • Proton-conductive polymer electrolyte or hydroxyide A negative electrode and a positive electrode are arranged via an electrolyte made of an on-conductive polymer electrolyte, and a liquid fuel is supplied to the negative electrode, and an oxidizing gas is supplied to the positive electrode.
  • the liquid fuel 1 to be supplied to the negative electrode is housed in a stainless steel container 2 filled with a porous material 7, and the inside of the container 2 and the power generation unit 10 also have a capillary force. (See, for example, Patent Document 1).
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2003-77505
  • the present invention has been made to solve such a problem, and a fuel containing liquid fuel to be supplied to a liquid fuel direct supply type fuel cell capable of supplying liquid fuel stably for a long time.
  • An object of the present invention is to provide a liquid fuel storage container for a battery and a fuel cell system provided with the liquid fuel storage container.
  • the present invention is configured as follows.
  • the liquid fuel storage container for a fuel cell stores liquid fuel directly supplied to the fuel cell body that performs power generation, and the mounting posture is not determined.
  • the fuel cell system according to the second aspect of the present invention provides a liquid fuel storage container for a fuel cell according to the first aspect, and a liquid fuel directly supplied from the liquid fuel storage container for a fuel cell to generate power. And a fuel cell main body for performing the following.
  • a portable electronic device when a portable electronic device is provided with a fuel cell that supplies liquid fuel such as an aqueous methanol solution directly to the anode electrode of the fuel cell to generate electric power, the inside of a tank member that stores the liquid fuel is provided.
  • the liquid fuel can move freely in the direction of gravity. Therefore, by providing the fuel supply pipe which extends into the tank member and supplies the liquid fuel with flexibility, and by providing a weight member near the liquid fuel suction port in the fuel supply pipe, the suction port is provided. Always moves in the direction of gravity. According to such a configuration, the suction port is always immersed in liquid fuel, and stable fuel supply is possible even when the fuel cell is provided in a portable electronic device.
  • the inside of the tank member can be used as a liquid fuel storage area, and a sufficient amount of liquid fuel can be stored for long-time operation of the device.
  • the number of porous members is small, the problem of impurity contamination can be reduced.
  • the fuel supply pipe is freely movable in the tank member, and thus may be entangled. Therefore, a support member is provided, and the length of the fuel supply pipe from the support member can be defined to prevent the fuel supply pipe from being entangled.
  • the fuel supply pipe has a coil spring structure or a nest structure.
  • the weight member has, for example, a spherical shape and can be attached to the fuel supply pipe so as to surround the suction port. Further, by using a porous member, the suction port comes into direct contact with the liquid fuel! Even if the weight member is not immersed in the liquid fuel, the liquid fuel can be sucked.
  • the shape of the weight member may be a cylindrical body having substantially the same shape as the cross section of the body of the tank member. According to this shape, the inner surface of the tank member can be slid along the axial direction, and the contact noise between the weight member and the tank member is reduced as compared with the case where a weight member such as a sphere is used. can do.
  • a liquid fuel container for a fuel cell stores liquid fuel directly supplied to a fuel cell body that performs power generation, and has a fixed mounting posture, and the liquid fuel is gravity-fed.
  • the inside of the tank member is divided into a fuel section provided in the tank member and containing the liquid fuel, and a porous member section containing a porous member absorbing the liquid fuel, and the liquid fuel passes therethrough.
  • a partition member having a possible through hole;
  • a fuel supply pipe that is a pipe that supplies the liquid fuel to the outside of the tank member and that has a suction port that is located in the porous member section and suctions the liquid fuel contained in the porous member;
  • the tank member is provided with the fuel compartment for storing the liquid fuel, it is possible to store a sufficient amount of the liquid fuel for long-time operation of the device.
  • the number of the porous member portions is small, the problem of impurity contamination can be reduced.
  • the fuel supply pipe that extends into the tank member and supplies the liquid fuel has flexibility.
  • the weight member is provided near the liquid fuel suction port in the fuel supply pipe, so that the suction port can always move in the direction of gravity, that is, in the liquid fuel portion. Therefore, the suction port is always immersed in liquid fuel, and stable fuel supply is possible even when the fuel cell is installed in a portable electronic device.
  • FIG. 1 is a cross-sectional view of a liquid fuel container for a fuel cell according to an embodiment of the present invention
  • FIG. 2 is a view showing a modification of the liquid fuel container for a fuel cell shown in FIG. 1.
  • FIG. 3 shows a modification of the weight member shown in FIG. 1 and FIG. FIG.
  • FIG. 4 is a view showing another modification of the weight member shown in FIGS. 1 and 2.
  • FIG. 5 is a view showing a modification of the fuel supply pipe shown in FIG. 1,
  • FIG. 6 is a view showing another modification of the fuel supply pipe shown in FIG. 1,
  • FIG. 7 is a view showing another modification of the fuel supply pipe shown in FIG. 1.
  • FIG. 8A is a diagram showing a liquid fuel storage container for a fuel cell having another modified example of the weight member shown in FIGS. 1 and 2.
  • FIG. 8B is a cross-sectional view taken along a line II in FIG. 8A.
  • FIG. 9A is a view showing a liquid fuel container for a fuel cell having still another modification of the weight member shown in FIGS. 1 and 2,
  • FIG. 9B is a cross-sectional view taken along the line II of FIG. 9A.
  • FIG. 10 is a cross-sectional view of a liquid fuel container for a fuel cell according to another embodiment of the present invention.
  • FIG. 11 is a diagram showing a configuration of a fuel cell system according to an embodiment of the present invention.
  • FIG. 12 is a diagram showing another configuration example of the fuel cell system shown in FIG. Yes,
  • FIG. 13 is a perspective view showing a state where the fuel cell system shown in FIGS. 11 and 12 is provided in an electronic device.
  • FIG. 14 is a cross-sectional view of a conventional fuel storage container.
  • a liquid fuel container for a fuel cell and a fuel cell system which are embodiments of the present invention, will be described below with reference to the drawings.
  • the fuel cell system is a system including the fuel cell liquid fuel container.
  • the same reference numerals are given to the same components.
  • a liquid fuel container 101 for a fuel cell according to an embodiment is provided.
  • the fuel cell system 190 will be described.
  • the fuel cell system 190 includes a fuel storage container 101, which will be described in detail later, and a fuel cell main body 180 that receives fuel from the fuel storage container 101 and generates power.
  • the fuel storage container 101 is a fuel cell.
  • a liquid fuel that can be directly supplied to the main body 180 an aqueous methanol solution with a concentration of about 10% is stored.
  • a fuel supply pump 184 may be provided between the fuel storage container 101 and the fuel cell main body 180 in order to supply the fuel from the fuel storage container 101 to the fuel cell main body 180.
  • the fuel storage container 101 can store high-concentration or undiluted methanol.
  • an intermediate tank 191 which is connected to the fuel storage container 101 and dilutes the high-concentration or undiluted methanol supplied from the fuel storage container 101 into an approximately 10% aqueous methanol solution and stores it. Need to be provided.
  • the fuel cell body 180 includes an electrolyte membrane 181, a force electrode 182, an anode 183, a catalyst membrane (not shown), and the like.
  • the liquid fuel supplied to the anode 183 and the cathode This is a power generation module that generates electrical energy by chemically reacting oxygen in the air supplied to 182. It should be noted that the drawing shows only one cell consisting of the electrolyte membrane 181, the force electrode 182, and the anode electrode 183. Actually, a plurality of cells are connected in series.
  • the fuel cell system 190 configured as described above is attached to a portable electronic device 201 such as a notebook personal computer, for example, as shown in FIG. Therefore, the mounting posture of the fuel cell liquid fuel storage container 101 is not determined, and the liquid fuel stored in the fuel cell liquid fuel storage container 101 moves freely in the direction of gravity.
  • liquid fuel container 101 for a fuel cell of the above embodiment will be described.
  • FIG. 1 shows a basic structure of a liquid fuel container 101 for a fuel cell of the above embodiment.
  • the liquid fuel container 101 for a fuel cell includes a tank member 110 and a fuel supply pipe 120.
  • the tank member 110 has a tank shape for storing liquid fuel directly supplied to the anode electrode 183 of the fuel cell main body 180, and is made of stainless steel in the present embodiment.
  • the tank member 110 has a methanol concentration of about 10% as the liquid fuel 185.
  • a methanol aqueous solution consisting of The liquid fuel 185 in the tank member 110 decreases with the power generation in the fuel cell main body 180, but the tank member 110 has an intake portion 111 on the side wall, and the liquid fuel 185 is consumed.
  • the intake section 111 is formed of a selectively permeable membrane that allows air to pass through but not liquid.
  • the tank member 110 preferably has a detachable structure. Therefore, the liquid fuel container 101 for a fuel cell has the detachable connector 130.
  • the connector 130 has a tank-side connector 131 connected to the fuel supply pipe 120 on the tank member 110 side and detached together with the tank member 110, and a main-unit-side connector 132 provided on the fuel cell main body 180 side. Connector 131 and main unit side connector 132 can be connected
  • the fuel supply pipe 120 is provided in the tank member 110 and supplies the liquid fuel 185 to the fuel cell main body 180.
  • the fuel supply pipe 120 is flexible and has a suction port 121 for sucking the liquid fuel 185.
  • a weight member 122 that constantly immerses the suction port 121 in the liquid fuel 185 is provided near the suction port 121.
  • the fuel supply pipe 120 be a thin tube having an inner diameter that is large enough to cause a capillary phenomenon.
  • a structure in which a fibrous member having a large number of pores inside is filled even if the inside diameter is large.
  • the outer diameter of the fuel supply pipe 120 is about lmm, and the inner diameter is about 0.5 mm.
  • the suction port 121 may be opened immediately after the weight member 122 in the liquid absorption direction 123 as shown in FIG. 1, or may be opened just before the weight member 122 as shown in FIG. .
  • the suction port 121 is opened immediately before the weight member 122 as shown in FIG. 3, the suction port 121 is opened due to the relationship between the position of the weight member 122 in the tank member 110 and the amount of the liquid fuel 185.
  • a situation that is not located in the liquid fuel 185 is also conceivable. Therefore, in the case of the configuration shown in FIG. 3, it is preferable to provide a suction member 124 made of a porous material surrounding the weight member 122 and the suction port 121 as shown in FIG.
  • the tank member 110 The suction port 121 always moves in the direction of gravity, that is, the direction in which the liquid fuel 185 exists, even when the liquid fuel 185 is inclined or when the amount of the liquid fuel 185 becomes small. Therefore, the suction port 121 is always immersed in the liquid fuel 185, and stable fuel supply is possible regardless of the attitude of the tank member 110.
  • most of the inside of the tank member 110 can be a storage area for the liquid fuel 185, and a sufficient amount of the liquid fuel 185 can be stored for long-time operation of the device. In addition, since the number of porous members is small, the problem of impurity contamination can be reduced.
  • the fuel supply pipe 120 may be entangled in the tank member 110. Therefore, as shown in FIG. 2, the fuel cell liquid fuel container 102 further includes a support member 140 provided in the tank member 110 to support the fuel supply pipe 120 and prevent the fuel supply pipe 120 from being entangled.
  • the supply pipe 120 is configured such that the suction port 121 has a length that is positioned at both ends 110a and 110b of the tank member 110 while being supported by the support member 140.
  • the other configuration is the same as that of the liquid fuel container 101 for a fuel cell.
  • the support member 140 is preferably attached to the inner surface 110c of the tank member 110 at a substantially central position in the axial direction 112 of the tank member 110. By providing the support member 140 at such a position, the length of the fuel supply pipe 120 that can be moved within the tank member 110 is limited, and the above-described tangling can be prevented.
  • the fuel supply pipe 120 may be formed in a spiral shape as shown in FIGS.
  • FIG. 6 by turning the fuel supply pipe 120 in a conical shape, the fuel supply pipe 120 is turned concentrically around the weight member 122 in the folded state, which is more preferable.
  • arranging a metal wire having a high elasticity along the fuel supply pipe 120 is also effective for avoiding the fuel supply pipe 120 from being entangled.
  • the fuel supply pipe 120 may have a nested structure so that it can be expanded and contracted in the axial direction of the fuel supply pipe 120 and can be folded.
  • the liquid fuel container 103 for a fuel cell and the liquid fuel container 104 for a fuel cell adopting weight members 125 and 126 as shown in FIGS. 8A and 9A. Can also be formed.
  • the weight members 125 and 126 have substantially the same shape as the cross section of the body 110d of the tank member 110. And is a member that can slide inside the tank member 110 along the axial direction 112 of the tank member 110.
  • the weight member 125 corresponds to a case where the cross section of the body portion lOd of the tank member 110 is rectangular, and has a square cylindrical shape, and has an inner surface 125a.
  • the tip 120a of the fuel supply pipe 120 is attached. It is to be noted that the suction port 121 exists at the tip end portion 120a.
  • the weight member 126 corresponds to a case in which the cross section of the body lOd of the tank member 110 is circular, and is formed in an annular shape. 120a is installed. Further, the weight member 126 has a weight portion 127 corresponding to the mounting portion of the tip portion 120a.
  • the weight portion 127 is made of a material or a member having a specific gravity greater than the specific gravity of the weight member 126, and may be formed integrally with the weight member 126 as shown in FIG. It may be configured to be attached to the weight member 126 separately.
  • the weight members 125 and 126 move in the direction of gravity in the tank member 110 along the axial direction 112 of the tank member 110 in accordance with the attitude of the tank member 110, and thus are similar to the weight members 122 described above.
  • the suction port 121 of the fuel supply pipe 120 can be arranged in a portion where the liquid fuel 185 exists.
  • the weight member 122 may hit the inner surface 110c of the tank member 110 in accordance with a change in the attitude of the tank member 110, and may make a clicking sound, for example.
  • the weight members 125 and 126 since the inner surface 110c of the tank member 110 slides in the axial direction 112, the occurrence of the contact noise can be reduced.
  • the weight portion 127 moves in the direction of gravity, so that the annular weight member 126 can rotate in the direction 113 around the axis along the inner peripheral surface of the tank member 110. . Therefore, the above-described contact noise can be reduced, and the suction port 121 can be more reliably arranged in the liquid fuel portion, so that it is possible to generate electric power with less residual fuel.
  • the liquid fuel storage container 105 for a fuel cell shown in FIG. 10 includes a partition member 150 and a fuel supply pipe 120 in the tank member 110 having the intake section 111.
  • the above partition The material 150 divides the inside of the tank member 110 into a fuel compartment 114 containing the liquid fuel 185 and a porous member compartment 115 containing a porous member 160 for absorbing the liquid fuel 185, and the liquid fuel 185 Is a member having one or a plurality of through holes 151 that can pass through.
  • the volume ratio between the fuel section 114 and the porous member section 115 is not specifically defined.
  • the force is preferably about half each, or as shown, the fuel section 114 is preferably slightly larger.
  • the fuel supply pipe 120 is located in the porous member section 115, and the suction port 121 is located in the porous member 160. Further, similarly to the case of the liquid fuel storage container 101 for the fuel cell, the liquid fuel storage container 105 for the fuel cell also has the connector 130.
  • the liquid fuel 185 in the fuel compartment 114 is supplied to the through hole of the partition member 150 regardless of the attitude of the liquid fuel storage container 105 for the fuel cell. It is possible to enter the porous member 160 of the porous member section 115 through 151. Therefore, the liquid fuel 185 can be supplied to the fuel cell main body 180 through the suction port 121 of the fuel supply pipe 120 located in the porous member 60 irrespective of the position of the liquid fuel storage container 105 for the fuel cell.
  • the storage amount of the liquid fuel 185 does not decrease. Therefore, the equipment can be used for a long time. Further, since the volume of the porous member 160 is smaller than that of the conventional configuration, it is possible to reduce the occurrence of problems such as dust caused by the porous member 160.
  • This invention is applicable to the fuel storage container which accommodated the liquid fuel supplied to a liquid fuel direct supply type fuel cell, and the fuel cell system provided with this fuel storage container.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Fuel Cell (AREA)

Abstract

Il est prévu un conteneur de réception de combustible liquide pour combustible liquide, et un système à cellule électrochimique. Le conteneur de réception de combustible liquide pour cellule électrochimique reçoit un combustible liquide pour injection dans une cellule électrochimique de type à alimentation directe en combustible liquide et capable d’injecter le combustible liquide de manière stable sur une période prolongée. Un tube d’arrivée de combustible (120) s’étendant dans un élément réservoir (110) et acheminant un combustible liquide (185) est prévu souple, et un élément de lestage (122) est placé près d’une ouverture d’aspiration de combustible liquide (121) dans le tube d’arrivée de combustible. Ceci permet à l’ouverture d’aspiration d’être toujours mobile vers une portion de combustible liquide et toujours immergée dans le combustible liquide. En conséquence, le combustible peut être acheminé en toute stabilité, même si la cellule électrochimique est installée dans un appareil électronique portable.
PCT/JP2005/007691 2004-05-18 2005-04-22 Conteneur de réception de combustible liquide pour cellule électrochimique, et système à cellule électrochimique WO2005112169A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US10/572,497 US20070125360A1 (en) 2004-05-18 2005-04-22 Liquid fuel storage container for fuel cell and fuel cell system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004147317A JP5008252B2 (ja) 2004-05-18 2004-05-18 燃料電池用液体燃料収納容器及び燃料電池システム
JP2004-147317 2004-05-18

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WO2005112169A1 true WO2005112169A1 (fr) 2005-11-24

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US (1) US20070125360A1 (fr)
JP (1) JP5008252B2 (fr)
CN (1) CN100423343C (fr)
WO (1) WO2005112169A1 (fr)

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JP4707594B2 (ja) * 2006-03-27 2011-06-22 Ｊｆｅエンジニアリング株式会社 管内検査装置
KR100911256B1 (ko) 2007-10-05 2009-08-06 주식회사 프로파워 진동환경에서 연속적으로 배출가능한 액체 연료전지용 탱크
JP5806923B2 (ja) * 2011-12-15 2015-11-10 シャープ株式会社 燃料電池用燃料タンク
KR102402586B1 (ko) * 2021-10-29 2022-05-26 한국가스안전공사 수소탱크의 파열시험 장치

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JP2004041389A (ja) * 2002-07-10 2004-02-12 Univ Nihon 血液採取装置

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JP2005332592A (ja) 2005-12-02
CN1906790A (zh) 2007-01-31
JP5008252B2 (ja) 2012-08-22
US20070125360A1 (en) 2007-06-07

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