CN103779586A - Fuel cell end plate - Google Patents
Fuel cell end plate Download PDFInfo
- Publication number
- CN103779586A CN103779586A CN201410013203.4A CN201410013203A CN103779586A CN 103779586 A CN103779586 A CN 103779586A CN 201410013203 A CN201410013203 A CN 201410013203A CN 103779586 A CN103779586 A CN 103779586A
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- CN
- China
- Prior art keywords
- end plate
- fuel cell
- pressure
- electric pile
- pile
- Prior art date
- Legal status (The legal status 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 status listed.)
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Classifications
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- 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
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- 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
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04746—Pressure; Flow
- H01M8/04776—Pressure; Flow at auxiliary devices, e.g. reformer, compressor, burner
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- 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
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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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
The invention discloses a fuel cell end plate which is adapted to be arranged at two ends of a fuel cell stack. The fuel cell end plate is characterized by comprising an external end plate, a pressure buffer and a pressure dispersion balancing plate; the pressure buffer is an elastic part which is vertically arranged between the external end plate and the pressure dispersion balancing plate. According to the fuel cell end plate, the problems of uneven internal stress in an electric pile, excessive local pressure and great peripheral appearance size of the electric pile caused due to processing errors of parts of the electric pile can be solved by adjusting internal pressure; the requirements of processing tolerances of parts in the electric pile can be reduced; the processing costs of the parts in the electric pile can be effectively reduced; the production efficiency can be improved; due to the pressure self-regulation in the electric pile, the service life of the electric pile can be prolonged and the performance of the electric pile can be improved; the requirement on space in the electric pile due to expansion caused by heat and contraction caused by cold can be met under the condition that the appearance size is not changed.
Description
Technical field
The present invention relates to fuel cell technology field, be specifically related to a kind of fuel cell end plate.
Background technology
Fuel cell is high with its energy conversion efficiency, noise is low, low-carbon (LC), zero discharge, flexible and convenient to use, operating temperature is low, energy density advantages of higher, is more and more liked by people and uses.Fuel cell is mainly divided into the five large classes such as phosphate fuel cell (PAFC), Proton Exchange Membrane Fuel Cells (PEMFC), alkaline fuel cell (AFC), molten carbonate fuel cell (MCFC), Solid Oxide Fuel Cell (SOFC).Fuel cell need to be assembled into pile by the mode of series connection by multiple cells conventionally.The indoor design of pile and mounting technology determine the performance of pile, determine the output of pile.
Fuel cell pile is mainly made up of membrane electrode (MEA), bipolar plates, collector plate, end plate and fastening bolt etc.Fuel cell is fixed field, and traditional fixed form is to utilize many standing screws of two outer end plates to be connected and fixed, and this fixed mode is had relatively high expectations to machining tolerances such as MEA, bipolar plates and end plates, has increased the production cost of pile.If the machining accuracy of the each parts of pile is inadequate, cause the pile inside inequality that is stressed, can cause the scale error of pile surrounding larger, be not easy to the pile standardization of product-quality indicators and produce; Due to the pile inside inequality that is stressed, can cause the parts contact elasticity of pile inside different, cause the internal resistance of pile to increase, along with pile uses, performance can decline to a great extent.Sometimes, the pile inside inequality that is stressed, can cause bipolar plates or MEA to damage.
Denomination of invention is " for the end plate of battery system and use the battery system of this end plate " (application number: 200810088784.2), a kind of end plate for battery system is disclosed, this end plate is that multiple rib structures are prepared in stacked mode, so that end plate has stronger structural rigidity, pressure obtains being evenly distributed in battery pack, but this structure is in the time that the machining tolerance of MEA and cell bipolar plate thickness is larger, still cannot solve the problem of isostasy.
Denomination of invention is " having the fuel cell of well-distributed pressure device " (application number: 01124222.1) disclose a kind of fuel cell with well-distributed pressure device, comprise two end versions, each end plate has a middle section and a peripheral edge margin, be located at the fuel cell pack between the middle section of this two end plate, be located at the tying device on this two end plate, and a well-distributed pressure device, comprise at least one pressure bellows, be fixedly arranged on this battery pile and wherein with between end plate.Change because of the caused pressure of expanding with heat and contract with cold by well-distributed pressure device adjustment, in this structure, pressure bellows directly contact with battery pile, need the area of pressure bellows almost to approach the area of battery pile, complicated structure; Otherwise the change in location of pressure bellows will cause pressure to change, and cannot reach the object of counterpressure.
Denomination of invention is " fuel cell end plate " (application number is 200480001636.2), a kind of fuel cell end plate is disclosed, comprise first, second structure member, connect multiple vertical member of the first structure member and the second structure member, fuel cell end plate is configured to laminating and transmits substantially constant pressure with the surface of fuel cell with the surface along described fuel cell.Be out of shape or fit in the example of unparalleled surface of terminal fuel cell at fuel cell end plate, the first and second structure members of end plate are substantially parallel transmits substantially invariable pressure to stride across the surface of terminal fuel cell.This structure can not effectively solve the pressure balanced problem of inside configuration.
Summary of the invention
Goal of the invention: the object of the invention is to for the deficiencies in the prior art, a kind of fuel cell end plate that can make the equilibrium of fuel cell pile internal pressure is provided.
Technical scheme: a kind of fuel cell end plate of the present invention, be suitable for being disposed at the two ends of fuel cell unit, this end plate comprises outer end plate, pressure buffer and pressure distributed equalization plate three parts; Described pressure buffer is elastomeric element, is vertically set between described outer end plate and pressure distributed equalization plate.By secure component, the end plate at battery pack two ends is closely linked together, pressure buffer and pressure distributed equalization plate can effectively regulate the machining tolerance due to MEA and cell bipolar plate thickness, the pile surrounding height heterogeneity causing and the phenomenon of inner discontinuity equalization.
In order to prevent that pressure buffer from sliding, on the medial surface of described outer end plate, be provided with pressure buffer fixed leg, one end of pressure buffer is set on pressure buffer fixed leg.
Preferably, described pressure buffer inside is cylindrical structural.
In order to facilitate the fixing of pile, on the side of described outer end plate, be provided with the T-shaped draw-in groove with work type fastener end adaptation; The side correspondence position of described pressure distributed equalization plate is provided with the adaptive draw-in groove in work type securing member middle part.
Preferably, described pressure buffer is elastic performance metal material or nonmetallic materials are made.
The present invention compared with prior art, its beneficial effect is: the present invention regulates by the pressure of self inside, solve the inner unbalance stress local pressure of the pile causing because of the each parts machining error of pile excessive, the problem that pile surrounding apparent size differs greatly; Can reduce the requirement to the each device fabrication tolerance in pile inside, effectively reduce the processing cost of the inner each parts of pile, improve production efficiency.Due to the pressure self-adjusting joint of pile inside, pile life-span and performance are improved.Guaranteeing, under the condition that apparent size is constant, can to meet pile inside due to the space requirement that expands with heat and contract with cold.
Accompanying drawing explanation
Fig. 1 is tip plate configurations schematic diagram of the present invention;
Fig. 2 is I shape securing member schematic diagram of the present invention;
Fig. 3 is fuel cell pile cut-away view of the present invention.
Embodiment
Below technical solution of the present invention is elaborated, but protection scope of the present invention is not limited to described embodiment.
Embodiment 1: a kind of fuel cell end plate, be suitable for being disposed at the two ends of fuel cell unit, this end plate comprises outer end plate 1, pressure buffer 3 and pressure distributed equalization plate 4 three parts; Described pressure buffer 3 is elastomeric element, is vertically set between described outer end plate 1 and pressure distributed equalization plate 4.
Each pile inside can reasonably arrange pressure buffer 3 according to the size of pile, and pressure buffer 3 is enclosed within respectively on pressure buffer fixed leg 2, so that prevent the slip of pressure buffer 3.Described pressure buffer 3 is cylindrical structural, for metal material or the nonmetallic materials of elastic performance are made.
On the side of described outer end plate, be provided with the T-shaped draw-in groove 5 with work type securing member 6 end adaptations; The side correspondence position of described pressure distributed equalization plate 4 is provided with the draw-in groove of work type securing member 6 middle part adaptations.
Operation principle: fuel cell is under certain dress heap pressure, pile is pressed onto to needed height, respectively I shape securing member is stuck in the draw-in groove on end plate surrounding side, then with screw, I shape securing member and end plate are fixed together, form exclusive " three-dimensional integrated " pile fixture of this invention, guaranteed the homogeneity of pile apparent size.Under certain pressure, pressure buffer has certain deformation, the inside of adjusting pile by the deformation quantity of pressure buffer is stressed, the inside self-regulation power being produced by elastic deformation, conduct to each battery unit of pile inside by pressure distributed equalization plate, effectively reduce the internal stress causing because of the machining tolerance of bipolar plates and membrane electrode, thereby can adjust the external dimensions of pile, make it to reach homogeneous.
As mentioned above, although represented and explained the present invention with reference to specific preferred embodiment, it shall not be construed as the restriction to the present invention self.Not departing under the spirit and scope of the present invention prerequisite of claims definition, can make in the form and details various variations to it.
Claims (5)
1. a fuel cell end plate, is suitable for being disposed at the two ends of fuel cell unit, it is characterized in that this end plate comprises outer end plate, pressure buffer and pressure distributed equalization plate three parts; Described pressure buffer is elastomeric element, is vertically set between described outer end plate and pressure distributed equalization plate.
2. fuel cell end plate according to claim 1, is characterized in that: on the medial surface of described outer end plate, be provided with pressure buffer fixed leg, one end of pressure buffer is set on pressure buffer fixed leg.
3. fuel cell end plate according to claim 1, is characterized in that: described pressure buffer is inner is cylindrical structural.
4. fuel cell end plate according to claim 1, is characterized in that: on the side of described outer end plate, be provided with the T-shaped draw-in groove with work type fastener end adaptation; The side correspondence position of described pressure distributed equalization plate is provided with the adaptive draw-in groove in work type securing member middle part.
5. fuel cell end plate according to claim 1, is characterized in that: metal material or nonmetallic materials that described pressure buffer is elastic performance are made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410013203.4A CN103779586B (en) | 2014-01-13 | 2014-01-13 | A kind of fuel cell end plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410013203.4A CN103779586B (en) | 2014-01-13 | 2014-01-13 | A kind of fuel cell end plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103779586A true CN103779586A (en) | 2014-05-07 |
| CN103779586B CN103779586B (en) | 2016-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410013203.4A Active CN103779586B (en) | 2014-01-13 | 2014-01-13 | A kind of fuel cell end plate |
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| CN (1) | CN103779586B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105774505A (en) * | 2016-03-02 | 2016-07-20 | 合肥国轩高科动力能源有限公司 | Power battery box locking system |
| CN105932318A (en) * | 2016-06-08 | 2016-09-07 | 北京氢璞创能科技有限公司 | Electric pile packaging structure |
| CN108808055A (en) * | 2017-05-04 | 2018-11-13 | 通用汽车环球科技运作有限责任公司 | Fuel-cell stack assembly |
| CN109071107A (en) * | 2016-04-20 | 2018-12-21 | 住友电气工业株式会社 | The transportation resources of the transport structure, redox flow batteries of redox flow batteries and redox flow batteries |
| CN109065935A (en) * | 2018-09-21 | 2018-12-21 | 南京大学昆山创新研究院 | A kind of pile of adjustable fuel cell end plate assembly and its composition |
| CN109378504A (en) * | 2018-12-05 | 2019-02-22 | 江苏氢电新能源有限公司 | A kind of pile end plate with gas pressure buffering and moistening function |
| CN109698294A (en) * | 2017-10-24 | 2019-04-30 | 福特全球技术公司 | The accumulator array plate assembly of pad is kept with pressure |
| CN111384415A (en) * | 2020-03-20 | 2020-07-07 | 武汉理工大学 | Novel fuel monocell end plate structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1245981A (en) * | 1998-08-19 | 2000-03-01 | 松下电器产业株式会社 | Solid macromolecular electrolyte type fuel cell |
| KR20050039354A (en) * | 2003-10-24 | 2005-04-29 | 현대자동차주식회사 | A device for tightening stacks of fuel cell in electric vehicles |
| CN101542816A (en) * | 2007-01-09 | 2009-09-23 | 松下电器产业株式会社 | Fuel cell |
| CN101764240A (en) * | 2008-12-26 | 2010-06-30 | 财团法人工业技术研究院 | Fuel battery pack |
-
2014
- 2014-01-13 CN CN201410013203.4A patent/CN103779586B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1245981A (en) * | 1998-08-19 | 2000-03-01 | 松下电器产业株式会社 | Solid macromolecular electrolyte type fuel cell |
| KR20050039354A (en) * | 2003-10-24 | 2005-04-29 | 현대자동차주식회사 | A device for tightening stacks of fuel cell in electric vehicles |
| CN101542816A (en) * | 2007-01-09 | 2009-09-23 | 松下电器产业株式会社 | Fuel cell |
| CN101764240A (en) * | 2008-12-26 | 2010-06-30 | 财团法人工业技术研究院 | Fuel battery pack |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105774505B (en) * | 2016-03-02 | 2018-01-09 | 合肥国轩高科动力能源有限公司 | Power battery box locking system |
| CN105774505A (en) * | 2016-03-02 | 2016-07-20 | 合肥国轩高科动力能源有限公司 | Power battery box locking system |
| CN109071107A (en) * | 2016-04-20 | 2018-12-21 | 住友电气工业株式会社 | The transportation resources of the transport structure, redox flow batteries of redox flow batteries and redox flow batteries |
| CN105932318A (en) * | 2016-06-08 | 2016-09-07 | 北京氢璞创能科技有限公司 | Electric pile packaging structure |
| CN108808055B (en) * | 2017-05-04 | 2021-11-30 | 通用汽车环球科技运作有限责任公司 | Fuel cell stack assembly |
| CN108808055A (en) * | 2017-05-04 | 2018-11-13 | 通用汽车环球科技运作有限责任公司 | Fuel-cell stack assembly |
| CN109698294A (en) * | 2017-10-24 | 2019-04-30 | 福特全球技术公司 | The accumulator array plate assembly of pad is kept with pressure |
| CN109065935A (en) * | 2018-09-21 | 2018-12-21 | 南京大学昆山创新研究院 | A kind of pile of adjustable fuel cell end plate assembly and its composition |
| CN109065935B (en) * | 2018-09-21 | 2024-02-02 | 南京大学昆山创新研究院 | Adjustable fuel cell end plate assembly and electric pile formed by same |
| CN109378504A (en) * | 2018-12-05 | 2019-02-22 | 江苏氢电新能源有限公司 | A kind of pile end plate with gas pressure buffering and moistening function |
| CN109378504B (en) * | 2018-12-05 | 2024-03-26 | 江苏氢电新能源有限公司 | Pile end plate with gas pressure buffering and humidifying functions |
| CN111384415B (en) * | 2020-03-20 | 2021-08-03 | 武汉理工大学 | Novel fuel monocell end plate structure |
| CN111384415A (en) * | 2020-03-20 | 2020-07-07 | 武汉理工大学 | Novel fuel monocell end plate structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103779586B (en) | 2016-01-20 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: Suzhou City, Jiangsu Province, Yushan Town, Kunshan City, 215313 Yu Yang Road No. 299, room 3 Patentee after: Jiangsu hydrogen power new energy Co., Ltd. Address before: 215300 Jiangsu Province, Kunshan City, Yushan City, Yu Yang Road, No. 777, China Energy Saving Industrial Park, building 20, building 3, building Patentee before: Jiangsu Lv Yao fuel cell system Manufacturing Co., Ltd |