WO2007148766A1 - 燃料電池 - Google Patents
燃料電池 Download PDFInfo
- Publication number
- WO2007148766A1 WO2007148766A1 PCT/JP2007/062550 JP2007062550W WO2007148766A1 WO 2007148766 A1 WO2007148766 A1 WO 2007148766A1 JP 2007062550 W JP2007062550 W JP 2007062550W WO 2007148766 A1 WO2007148766 A1 WO 2007148766A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- end plate
- cell
- fuel cell
- load
- cell stack
- Prior art date
Links
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
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2465—Details of groupings of fuel cells
- H01M8/247—Arrangements for tightening a stack, for accommodation of a stack in a tank or for assembling different tanks
- H01M8/248—Means for compression of the fuel cell stacks
-
- 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 fuel cell having a load adjusting screw for adjusting a compressive load of a cell stack in which power generation cells are stacked.
- Such a fuel cell is usually arranged in a cell stack in which a required number of cells that generate electricity by an electrochemical reaction between a fuel gas and an oxidizing gas are stacked, and disposed outside the stacking direction of the cell stack.
- the fuel cell stack includes an end plate that applies a compressive load adjusted by a load adjusting screw to the cell stack.
- the stack length of the cell stack constituting the fuel cell stack differs depending on the thickness and stacking amount of the cells. For this reason, it is necessary to set multiple types of load adjustment screws with a length corresponding to the length of the cell laminated body and the length of the thread of the female screw of the plate member fitted in the end plate or the end plate. there were. Also, because the number of threads differs depending on the thickness of the end plate or plate-like member, multiple types of load adjustment screws with the length of the female thread are also prepared in this case. There was a need to do.
- a fuel cell according to the present invention includes a cell stack in which a plurality of cells are stacked, and an end plate disposed outside the stack of the cell stack, the end plate The fuel cell is provided with a load adjustment screw that moves along the stacking direction of the cell stack and adjusts a compressive load applied to the cell stack, and the end plate includes the load adjustment screw.
- a female screw member formed by screwing a female screw until it protrudes toward the cell laminate is provided in a state in which rotation about an axis with respect to the end plate is restricted. According to this configuration, it is possible to sufficiently secure a screw thread range in which the load adjusting screw can be screwed, so that the stack length or the end plate of the cell stack that changes depending on the thickness of the cell and the stack amount can be obtained.
- a compressive load can be applied to the cell stack with the load adjusting screw having a predetermined length without preparing various load adjusting screws having different lengths corresponding to the thickness of the cell.
- the female screw member for example, a boss portion formed with an internal screw on the inside and penetrating the end plate, a flange portion extending radially outward from an intermediate position in the axial direction of the boss portion and contacting the end plate, It is possible to adopt a shape in which the flange portion is inclined so that the thickness decreases as the distance from the boss portion increases.
- FIG. 1 is a front sectional view showing an embodiment of a fuel cell according to the present invention.
- FIG. 2 is a front sectional view showing another embodiment of the fuel cell.
- FIG. 1 shows a fuel cell 10.
- This fuel cell 10 is used as an in-vehicle power generation system for fuel cell vehicles, power generation systems for all moving objects such as ships, airplanes, trains and walking robots, and power generation equipment for buildings (housing, buildings, etc.) It can be applied to stationary power generation systems, etc., but specifically for automobiles.
- the fuel cell 10 has a fuel cell stack 11 and a stack case 12 made of an insulating material such as a synthetic resin that covers the outside of the fuel cell stack 11.
- the stack case 12 may be made of a metal covered with an insulating material such as a synthetic resin.
- the fuel cell stack 11 has a pair of rectangular end plates 15, 16 connected to each other at the outer edges by a tension plate 17, and an outer portion is formed.
- the end plates 15, 1 6 and the tension plate 1 7 are made of, for example, duralumin.
- the fuel cell stack 11 includes a rectangular insulating plate 18, a terminal plate 19, and a cover on the other end plate 16 side of one end plate 15 in order from the end plate 15 side.
- One plate 20 is arranged, and the required number of cells 21 having a rectangular shape in plan view are stacked on the other end plate 16 side of the cover plate 20 to generate power by receiving supply of fuel gas and oxidizing gas.
- the cell stack 2 2 is arranged with the stacking direction of the cells 21 being the direction connecting the end plates 15 and 16.
- the fuel cell stack 1 1 includes a rectangular cover plate 2 4, a terminal plate 2 5, and a cell stack 2 2 in order from the cell stack 2 2 side to the other end plate 1 6 side of the cell stack 2 2.
- An insulating plate 26 is disposed, and a spring box 27 having a rectangular shape in plan view is disposed on the other end plate 16 side of the insulating plate 26.
- a plurality of coil springs (not shown) are provided in the spring box 27, and the insulating plate 26, that is, the cell stack 22 is pressed in the stacking direction via these coil springs.
- the spring box 27 is formed with a protrusion 28 at the center position that is spherical and protrudes on the opposite side of the cell laminate 22.
- the other end plate 16 has a rectangular end plate body 30 connected to the tension plate 17 and a connecting position of the end plate body 30 to the tension plate 17. Is also configured with a stagger (female screw member) 31 provided in the inner range.
- the end plate body 30 is formed with a through hole 32 that penetrates in the thickness direction at the center thereof.
- the end plate body 30 is formed with a rotation restricting hole 33 on the cell laminated body 22 side in parallel with the through hole 32.
- the rotation restricting hole 33 has a circular shape when viewed from the axial direction.
- the stopper 31 reinforces the end plate 16 including the end plate body 30 by abutting against the spring box 27 side of the end plate body 30.
- This stubber 31 has a cylindrical boss portion 35 having a female screw 34 formed on the inside thereof, and extends radially outward from a substantially middle position in the axial direction of the boss portion 35 over the entire circumference. Flask part with a constant thickness coaxial with boss part 3 5 3 6 And have.
- the stopper 3 1 is inserted into the through hole 3 2 of the end braid body 30 at one cylindrical portion 3 7 protruding from the flange portion 3 6 to the axial direction one side of the boss portion 3 5, and the flange portion 3 6 The entire surface is in contact with the end plate body 30.
- the axial length of one cylindrical portion 37 of the stopper 31 is equal to the axial length of the through-hole 32 of the end braid body 30, and the end surface of the cylindrical portion 37 is the end plate body. It is flush with the outer end face of 30.
- the other cylindrical portion 38 of the stopper 31 protrudes toward the cell laminate 22 side.
- the flange portion 36 has a shape that is gently inclined so that the thickness decreases as the distance from the cylindrical portion 38 increases. In order to reinforce the flange portion 36, ribs may be formed radially from the cylindrical portion 38.
- a columnar rotation restricting pin portion 40 that protrudes in parallel to the cylindrical portion 37 in the axial direction from the flange portion 36 is formed on the stock ring 31.
- the distance between the center of the boss 35 and the center of the rotation restricting pin 40 is equal to the distance between the center of the through hole 32 and the center of the rotation restricting hole 33 in the end plate body 30.
- the angle 3 1 is inserted into the end plate body 30 and one cylindrical portion 3 7 of the boss 3 5 is inserted into the through hole 3 2 while the rotation restricting pin 40 is connected to the rotation restricting hole 3 3.
- the stopper 31 is installed in a state where the rotation with respect to the end plate body 30 is restricted.
- the end plate 16 has a load adjusting screw 41 that is screwed into the female screw 3 4 of the stopper 31, and the load adjusting screw 41 is a protrusion 2 8 of the spring box 2 7. Abut.
- the load adjusting screw 41 is formed with a recess 43 on the projecting portion 28 side, and the recess 43 is engaged with the projecting portion 28.
- the load adjustment screw 4 1 has a tool such as a hexagon bolt on the opposite side to the projection 2 8.
- the tool fitting part 4 2 is formed, and the load adjusting screw 4 1 is rotated along the axis direction by being rotated through a tool fitted to the tool fitting part 4 2. To adjust the load on the cell stack 2 2.
- the load adjusting screw 41 when the load adjusting screw 41 rotates, the stopper 31 also tries to rotate, but the rotation restricting pin 40 comes into contact with the inner wall surface of the rotation restricting hole 33 of the end plate body 30. Therefore, the rotation with respect to the end plate body 30 is restricted, and when the load of the spring box 27 is increased, the rotation is also restricted by the friction between the end plate body 30 and the flange portion 36. Only the load adjustment screw 4 1 rotates relative to the end plate body 30.
- the load adjusting screw 41 has the female screw 34 that can be screwed, and the stopper 31 that protrudes toward the cell laminate 2 2 side. Is provided on the end plate 16 so that a sufficient screw thread range can be secured to which the load adjusting screw 41 can be screwed.
- various load adjustment screws 4 1 of different lengths are prepared corresponding to the stacking length of the cell stack 2 2 and the thickness of the end plate 16 that change depending on the thickness of the cell 21 and the stacking amount.
- the compression load can be applied to the cell stack 2 2 by pressing the spring box 2 7 with the load adjusting screw 4 1 of a predetermined length.
- the thickness of the end plate 16 is thin. This is effective when it is difficult to form female threads.
- the stopper 3 1 since the rotation of the stopper 3 1 is restricted with respect to the end plate 16, the stopper 3 1 does not rotate with the load adjustment screw 4 1, and the load adjustment screw 4 1 is well aligned with the axial direction. Can be moved to.
- the cylindrical portion 3 8 of the spatula 3 1 protrudes toward the cell laminate 2 2, and the flange portion 3 6 becomes thinner as it gets away from the cylindrical portion 3 8. Since the shape is gently inclined, for example, even if the spring box 27 pressed by the load adjusting screw 41 is inclined, the interference with the stopper 31 can be suppressed.
- FIG. 2 shows another embodiment.
- the through hole 3 2 has a larger diameter than the cylindrical portion 3 8 and the rotation restricting hole portion 3 3 rotates. The diameter is larger than the restriction pin 40.
- the stopper 3 1 has play that is movable with respect to the end braid body 30 in the radial direction of the female screw 3 4, that is, in the radial direction of the load adjusting screw 4 1 that is screwed into the female screw 3 4. Moreover, it is movable in all radial directions at 360 degrees. As a result, the load adjusting screw 41 that is screwed to the end plate 16 can also be moved in the radial direction with respect to the end plate 16, and can be moved in all radial directions of 360 degrees. .
- the load adjustment screw 41 can be moved in the radial direction with respect to the end plate 16, and as a result, the load adjustment screw 41 can be engaged with each other in the radial direction.
- Load adjustment screw 4 1 recess 4 3 and spring box 2 7 protrusion 2 8 are movable relative to the end plate 1 6 in the radial direction of load adjustment screw 4 1 load adjustment screw 4 In the radial direction of 1, that is, in the direction perpendicular to the stacking direction of the cell laminate 2 2, the end braid 16 and the spring box 27 can be aligned, and assembly accuracy can be improved.
- a counterbore hole with a diameter larger than the flange 3 of the stopper 3 1 is formed in the end plate body 30 and the flange 3 of the stopper 3 1 is formed in the counterbore. Even if you insert
Landscapes
- 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
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/086,061 US20090162728A1 (en) | 2006-06-20 | 2007-06-15 | Fuel Cell |
DE112007001342T DE112007001342T5 (de) | 2006-06-20 | 2007-06-15 | Brennstoffzelle |
CA002627396A CA2627396A1 (en) | 2006-06-20 | 2007-06-15 | Fuel cell |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006-170518 | 2006-06-20 | ||
JP2006170518A JP2008004306A (ja) | 2006-06-20 | 2006-06-20 | 燃料電池 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007148766A1 true WO2007148766A1 (ja) | 2007-12-27 |
Family
ID=38833504
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/062550 WO2007148766A1 (ja) | 2006-06-20 | 2007-06-15 | 燃料電池 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20090162728A1 (ja) |
JP (1) | JP2008004306A (ja) |
CN (1) | CN101467299A (ja) |
CA (1) | CA2627396A1 (ja) |
DE (1) | DE112007001342T5 (ja) |
WO (1) | WO2007148766A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017062897A (ja) * | 2015-09-24 | 2017-03-30 | トヨタ自動車株式会社 | 燃料電池 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI402431B (zh) * | 2010-10-06 | 2013-07-21 | Univ Nat Cheng Kung | 燃料電池模組之鎖合裝置與燃料電池裝置 |
JP6102887B2 (ja) * | 2014-11-05 | 2017-03-29 | トヨタ自動車株式会社 | インシュレータおよび燃料電池装置 |
JP6800257B2 (ja) * | 2019-02-04 | 2020-12-16 | 本田技研工業株式会社 | 燃料電池スタック及び燃料電池スタックの組立方法 |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6255875U (ja) * | 1985-09-27 | 1987-04-07 | ||
JPH06251795A (ja) * | 1993-02-23 | 1994-09-09 | Toshiba Corp | 加圧型燃料電池の容器貫通ブッシング |
JPH1197054A (ja) * | 1997-09-22 | 1999-04-09 | Sanyo Electric Co Ltd | 積層体の締付構造及び締付方法 |
JP2001135344A (ja) * | 1999-11-09 | 2001-05-18 | Matsushita Electric Ind Co Ltd | 高分子電解質型燃料電池スタック |
JP2002302785A (ja) * | 2001-04-04 | 2002-10-18 | Mitsubishi Heavy Ind Ltd | 固体高分子水電解セル構造体 |
JP2003282134A (ja) * | 2002-03-22 | 2003-10-03 | Ishikawajima Harima Heavy Ind Co Ltd | 燃料電池の締付方法及び装置 |
JP2004152684A (ja) * | 2002-10-31 | 2004-05-27 | Honda Motor Co Ltd | 燃料電池スタック |
JP2004303587A (ja) * | 2003-03-31 | 2004-10-28 | Honda Motor Co Ltd | 燃料電池 |
JP2005100755A (ja) * | 2003-09-24 | 2005-04-14 | Honda Motor Co Ltd | 燃料電池スタック |
JP2006114456A (ja) * | 2004-10-18 | 2006-04-27 | Nissan Motor Co Ltd | 燃料電池システム |
JP2006114457A (ja) * | 2004-10-18 | 2006-04-27 | Nissan Motor Co Ltd | 燃料電池システム |
JP2007173169A (ja) * | 2005-12-26 | 2007-07-05 | Toyota Motor Corp | 燃料電池 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3595027B2 (ja) | 1994-10-21 | 2004-12-02 | トヨタ自動車株式会社 | 燃料電池およびその製造方法 |
DE19910129C1 (de) * | 1999-02-28 | 2000-06-29 | Heliocentris Energiesysteme | Brennstoffzellensystem zur elektrochemischen Energieerzeugung |
-
2006
- 2006-06-20 JP JP2006170518A patent/JP2008004306A/ja not_active Withdrawn
-
2007
- 2007-06-15 WO PCT/JP2007/062550 patent/WO2007148766A1/ja active Application Filing
- 2007-06-15 CN CNA2007800212709A patent/CN101467299A/zh active Pending
- 2007-06-15 DE DE112007001342T patent/DE112007001342T5/de not_active Withdrawn
- 2007-06-15 US US12/086,061 patent/US20090162728A1/en not_active Abandoned
- 2007-06-15 CA CA002627396A patent/CA2627396A1/en not_active Abandoned
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6255875U (ja) * | 1985-09-27 | 1987-04-07 | ||
JPH06251795A (ja) * | 1993-02-23 | 1994-09-09 | Toshiba Corp | 加圧型燃料電池の容器貫通ブッシング |
JPH1197054A (ja) * | 1997-09-22 | 1999-04-09 | Sanyo Electric Co Ltd | 積層体の締付構造及び締付方法 |
JP2001135344A (ja) * | 1999-11-09 | 2001-05-18 | Matsushita Electric Ind Co Ltd | 高分子電解質型燃料電池スタック |
JP2002302785A (ja) * | 2001-04-04 | 2002-10-18 | Mitsubishi Heavy Ind Ltd | 固体高分子水電解セル構造体 |
JP2003282134A (ja) * | 2002-03-22 | 2003-10-03 | Ishikawajima Harima Heavy Ind Co Ltd | 燃料電池の締付方法及び装置 |
JP2004152684A (ja) * | 2002-10-31 | 2004-05-27 | Honda Motor Co Ltd | 燃料電池スタック |
JP2004303587A (ja) * | 2003-03-31 | 2004-10-28 | Honda Motor Co Ltd | 燃料電池 |
JP2005100755A (ja) * | 2003-09-24 | 2005-04-14 | Honda Motor Co Ltd | 燃料電池スタック |
JP2006114456A (ja) * | 2004-10-18 | 2006-04-27 | Nissan Motor Co Ltd | 燃料電池システム |
JP2006114457A (ja) * | 2004-10-18 | 2006-04-27 | Nissan Motor Co Ltd | 燃料電池システム |
JP2007173169A (ja) * | 2005-12-26 | 2007-07-05 | Toyota Motor Corp | 燃料電池 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017062897A (ja) * | 2015-09-24 | 2017-03-30 | トヨタ自動車株式会社 | 燃料電池 |
Also Published As
Publication number | Publication date |
---|---|
CN101467299A (zh) | 2009-06-24 |
DE112007001342T5 (de) | 2009-04-16 |
JP2008004306A (ja) | 2008-01-10 |
CA2627396A1 (en) | 2007-12-27 |
US20090162728A1 (en) | 2009-06-25 |
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