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21. 发明专利

JPH0349156A FUEL ELECTRODE FOR SOLID ELECTROLYTE FUEL CELL 失效
公开(公告)号：JPH0349156A
公开(公告)日：1991-03-01
申请号：JP18259289
申请日：1989-07-17
申请人： NIPPON KOKAN KK
发明人： SATO YOSHIO , TSUNEIZUMI HIROSHI , MATSUDA EIJI , NAKAGAWA HIROTAKA , MIHARA HIROSHI
IPC分类号： H01M4/86 , H01M8/12
摘要： PURPOSE:To obtain excellent electrochemical reaction and conductivity and prevent the breakage of a solid electrolyte or an electrode by thermal stress by molding ceramic grains coated with nickel grains on the surface into a plate shape, and baking it. CONSTITUTION:Ceramic grains 12 coated with nickel grains 13 on the surface are molded into a plate-shaped fuel electrode 11, and it is baked. Ceramic grains of alumina or silicon carbide having a smaller linear expansion coefficient than that of a normal solid electrolyte material, e.g. yttria stabilized zirconia or ceramic grains of YSZ itself or partially stabilized zirconia are used for ceramic grains 12.

22. 发明专利

JP2001179446A METHOD FOR DETECTING GROOVE POSITION 失效
公开(公告)号：JP2001179446A
公开(公告)日：2001-07-03
申请号：JP36510099
申请日：1999-12-22
申请人： NIPPON KOKAN KK
发明人： SANO TAKANOBU , MURAYAMA HIROSHI , MATSUDA EIJI , SUGITANI YUJI
IPC分类号： B23K37/02 , B23K9/127
摘要： PROBLEM TO BE SOLVED: To provide a method for detecting a groove position, which has high detection precision. SOLUTION: In front of traveling system welding equipment 1, two laser beam sensors 2a, 2b are arranged before and behind in the proceeding direction of welding. By oscillating the two laser beam sensors 2a, 2b in the direction crossing a groove 11, the left end and the right end positions of the groove are detected, and from the detected positions, a groove width or a groove root width is detected. Further by finding a groove center, the displacement quantities of the groove center from the oscillation centers of the laser beam sensors 2a, 2b and a displacement angle in the proceeding direction of the welding equipment to a weld line 9, are found.

23. 发明专利

JPH08267107A DEVICE FOR CLAMPING BILLET AND DEVICE FOR FLASH WELDING BILLET 失效
公开(公告)号：JPH08267107A
公开(公告)日：1996-10-15
申请号：JP9768495
申请日：1995-03-31
申请人： NIPPON KOKAN KK
发明人： MATSUDA EIJI , FUJIOKA TADASHI , MUKAI TAKAMINE , MATSUO GIICHI
IPC分类号： B21B15/00 , B23K11/04
摘要： PURPOSE: To accuratly position billets to be joined and to execute good welding in a short time. CONSTITUTION: The billets 7 are held between a 1st clamp head 61 and 2nd clamp head 62 and between a 3rd clamp head 63 and 4th clamp head 64 in two orthogonal directions and surely fixed. A pair of a power feeding clamp jaw and clamp jaw are provided along the longitudinal direction of the billet 7 on each clamp head and the billet 7 are prevented from being fixed inclinedly to the horizontal or vertical direction. By feeding power from the power feeding clamp jaw having an electrode block to the billets 7, a preceding billet and the succeeding billet are welded.

24. 发明专利

JPH0644988A FUEL CELL 失效
公开(公告)号：JPH0644988A
公开(公告)日：1994-02-18
申请号：JP33450791
申请日：1991-11-25
申请人： NIPPON KOKAN KK
发明人： MATSUDA EIJI , TSUNEIZUMI HIROSHI , KADOWAKI TAKUYA , SHIOMITSU TORU , NAKAGAWA HIROTAKA , WATANABE YUICHI , YOKOSUKA KOICHI
IPC分类号： H01M8/02 , H01M8/12
摘要： PURPOSE:To improve generating efficiency by eliminating a leak of fuel gas in a fuel cell. CONSTITUTION:A groove 8 is provided in a side of a separator 7a so as to surround the periphery of a fuel electrode 5a, on the side of the fuel electrode 5a of a solid electrolyte 4. Alloy-made tube units 2, sealed in a condition of pressurizing gas 3 which is a thermal expansion substance, are fitted into these grooves 8 and pressurized from both the separator 7a and the solid electrolyte 4.

25. 发明专利

JPH0462757A SOLID ELECTROLYTE TYPE FUEL CELL 失效
公开(公告)号：JPH0462757A
公开(公告)日：1992-02-27
申请号：JP17030390
申请日：1990-06-29
申请人： NIPPON KOKAN KK
发明人： NAKAGAWA HIROTAKA , UEMOTO YOSHIHITO , TSUNEIZUMI HIROSHI , KADOWAKI TAKUYA , MATSUDA EIJI , MIHARA HIROSHI , YOKOSUKA KOICHI
IPC分类号： H01M8/02 , H01M8/12 , H01M8/24
摘要： PURPOSE:To prevent excessive thermal stress from being produced between a metal fiber layered body and a conductive separator by forming films on one face of a substrate consisting of the metal fiber layered body in the order of a fuel pole, a solid electrolyte, then an air pole. CONSTITUTION:A composite plate 10 which consists of the films of a fuel pole 2, a solid electrolyte 1 and an air pole 3 formed in that order on one face of a film forming substrate consisting of a metal fiber layered body 15, and conductive separator plates 4, 5 which have flow-through passes for supplying fuel and air respectively to the fuel pole 2 and the air pole 3 are layered alternately. When the layered body 15, which has strength enough to be independent by itself and has both conductive and gas permeative properties is directly brought into contact with the side of the fuel pole 2, the fuel gas is supplied to the surface of the pole without any trouble and its electrical contact with the conductive separators 4, 5 which function as collector boards is strengthened. The layered body 15 has strength and allows formation of a pole on its surface by a spray method or the like so that large-sizing with the pole of a large area can be achieved and the efficiency in cell reaction can be increased because the pole with micropores produced in accordance with the spraying condition results in the enlarged reaction surface area of the pole.

26. 发明专利

JPH03283266A SOLID ELECTROLYTE FUEL CELL OF INSIDE REFORMED TYPE 失效
公开(公告)号：JPH03283266A
公开(公告)日：1991-12-13
申请号：JP7866790
申请日：1990-03-29
申请人： NIPPON KOKAN KK
发明人： NAKAGAWA HIROTAKA , UEMOTO YOSHIHITO , TSUNEIZUMI HIROSHI , KADOWAKI TAKUYA , MATSUDA EIJI , MIHARA HIROSHI , YOKOSUKA KOICHI
IPC分类号： H01M8/02 , H01M8/06 , H01M8/12 , H01M8/24
摘要： PURPOSE:To immediately use hydrocarbon gas as fuel without fuel reformation by a reforming device by providing a fuel reforming catalyst layer on the fuel electrode side of an SOFC via a metal fiber base, or constituting inside the metal fiber base a composite film electrode having catalyst particles stuck thereto. CONSTITUTION:NiO(nickel oxide) is sprayed to one face of a metal fiber base 1 formed by a laminated body of metal fibers such as Ni fibers, to form a reforming catalyst layer 6. The reforming catalyst layer 6 can be porous one by spraying method and formed into a porous nickel(Ni) catalyst layer. Next, films of a fuel electrode 2, a solid electrolyte 3 and an air electrode 4 are sequentially formed on the other face of the metal fiber base 1 and thus a battery three-layered film 5 is formed whereby a composite film electrode is obtained. The composite film electrode constitutes an electrode for a single cell whose inside can be reformed. Since the capacity of the reforming catalyst layer can be adjusted by varying film thickness, the optimal capacity can be selected.

27. 发明专利

JPH03257760A SOLID ELECTROLYTE TYPE FUEL CELL 失效
公开(公告)号：JPH03257760A
公开(公告)日：1991-11-18
申请号：JP5492690
申请日：1990-03-08
申请人： NIPPON KOKAN KK
发明人： MIHARA HIROSHI , NAKAGAWA HIROTAKA , UEMOTO YOSHIHITO , TSUNEIZUMI HIROSHI , KADOWAKI TAKUYA , MATSUDA EIJI , YOKOSUKA KOICHI
IPC分类号： H01M8/02 , H01M8/12 , H01M8/24
摘要： PURPOSE:To improve the gas sealing property of the inner manifold part, and to secure an optimum contact for electric conduction by forming a cell three- layer membrane only at the central part of a separator, carrying out the gas sealing at the periphery of the three-layer membrane with seal plates, and separating the inner manifold part from the cell three-layer membrane spatially. CONSTITUTION:Numerous projections are formed on the surface of a separator 9, manifolds 17 to deliver or exhaust the air and the fuel are provided at the outer periphery of them, and cell three-layer membrane 15 which consist of a fuel electrode, a solid electrolyte, and an air electrode are formed on the surface of porous conductive membranous bases 18. The cell three-layer membranes 15 are formed only at the center of the separator 9, and a distance is placed from the inner manifolds 17. And a cell main body made by forming the cell three-layer membrane 15 on the base 18, a seal plate 19 connected to the outer periphery of the cell main body maintaining gas tightness, and a separator 9 are laminated each other, so as to seal between the cell three-layer membranes 15, and the seal plates 19 and the bases 18. Consequently, the gas sealing property at the inner manifold 17 part is improved, and a good contact for electric conduction can be obtained.

28. 发明专利

JPH03222261A ELECTRODE FOR SOLID ELECTROLYTIC FUEL CELL 失效
公开(公告)号：JPH03222261A
公开(公告)日：1991-10-01
申请号：JP1498490
申请日：1990-01-26
申请人： NIPPON KOKAN KK
发明人： MIHARA HIROSHI , NAKAGAWA HIROTAKA , UEMOTO YOSHIHITO , TSUNEIZUMI HIROSHI , KADOWAKI TAKUYA , MATSUDA EIJI , YOKOSUKA KOICHI
IPC分类号： H01M4/86 , H01M8/12
摘要： PURPOSE:To unify current distribution and put a large battery into practical use by changing the porosity on the fuel-electrode inlet side of a battery to a small extent and that on the outlet side to a large extent. CONSTITUTION:It is made up with a solid electrolyte 1, an air electrode 1, a fuel electrode 3, a grooved separator 4, a collector 5, a fuel electrode inlet 7, a fuel electrode outlet 8 and a battery. In this case, the porosity of the battery 9 is changed continuously or discontinuously to a small extent on the fuel- electrode inlet 7 side and to a large extent on the fuel-electrode outlet 8 side. That results in uniform current distribution at each of positions from the inlet 7 to the outlet 8. Stress distribution is thus unified as well to put a large battery into practical use.

29. 发明专利

JPH02267867A SOLID ELECTROLYTE TYPE FUEL CELL AND ITS MANUFACTURE 失效
公开(公告)号：JPH02267867A
公开(公告)日：1990-11-01
申请号：JP8930089
申请日：1989-04-07
申请人： NIPPON KOKAN KK
发明人： SATO YOSHIO , TSUNEIZUMI HIROSHI , NAKAGAWA HIROTAKA , MATSUDA EIJI , MIHARA HIROSHI
IPC分类号： H01M8/02 , H01M4/86 , H01M8/10 , H01M8/12
摘要： PURPOSE:To obtain a cell in which the electrode member is never broken by using a fuel electrode made by laminating neckel fibers as the base, and laminating plural electrode members made by forming membrans of solid electrolyte and air electrode on the base. CONSTITUTION:An electrode member 1 furnishes a three-layer body which consists of a fuel cell 2 made by laminating nickel felts, a solid electrolyte 3 forming a membrane on the fuel cell 2, and an air electrode 4 forming a membrane on the solid electrolyte 3. And, the electrolyte 3 and the electrode 4 are arranged to make the cell 2 contacted on a metal separator 7 which furnishes fuel passages 5 and air passages 6, on which separators 7 and three- layer bodies are laminated alternatively positioning a separator 7 at the uppermost and the lowermost layers, and an electric circuit 8 is formed between the uppermost layer and the lowermost layer. A fuel is fed through fuel feeding holes 9 and the air is fed through air feeding holes 10 respectively, to generate power by an electrochemical reaction.

30. 发明专利

JPH02262264A FORMATION OF SOLID ELECTROLYTE FOR SOLID ELECTROLYTE FUEL CELL 失效
公开(公告)号：JPH02262264A
公开(公告)日：1990-10-25
申请号：JP8248389
申请日：1989-03-31
申请人： NIPPON KOKAN KK
发明人： SATO YOSHIO , TSUNEIZUMI HIROSHI , NAKAGAWA HIROTAKA , MATSUDA EIJI , MIHARA HIROSHI
IPC分类号： H01M8/12
摘要： PURPOSE:To form a dense thin film of solid electrolyte on a sheet of porous substrate by disposing a sheet of a porous electrode with its sheet surface in clined, and depositing steam of solid electrolyte on one side of this sheet surface. CONSTITUTION:A sheet of porous electrode substrate 1 is held with its sheet surface 2 inclined, and a heat container 4 containing material 3 of solid electro lyte is disposed under the substrate 1. The material 3 of solid electrolyte is then heated by the heat container 4 to produce steam 5 of solid electrolyte, and this steam 5 is deposited on the underside of the porous electrode substrate 1, so that a thin film 6 of solid electrolyte is formed. The dense thin film 6 can thus be obtained because the steam 5 of solid electrolyte is not allowed to penetrate into pores opening in the surface of the sheet 1 of porous electrode substrate.

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