CN104064802B - Binding type locking structure for steel belts of fuel cell stack - Google Patents
Binding type locking structure for steel belts of fuel cell stack Download PDFInfo
- Publication number
- CN104064802B CN104064802B CN201410299261.8A CN201410299261A CN104064802B CN 104064802 B CN104064802 B CN 104064802B CN 201410299261 A CN201410299261 A CN 201410299261A CN 104064802 B CN104064802 B CN 104064802B
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- steel band
- end plate
- fuel cell
- rear end
- plate
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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
- 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
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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 relates to a binding type locking structure for steel belts of a fuel cell stack. The binding type locking structure comprises the fuel cell stack, a front end plate and a rear end plate, wherein the front end plate and the rear end plate are respectively located on two sides of the fuel cell stack, a front-end radian end plate and a front-end steel belt are arranged on the outer side of the front end plate from inside to outside, a rear-end radian end plate and a rear-end steel belt are arranged on the outer side of the rear end plate from inside to outside, the inner side faces of the front-end radian end plate and the rear-end radian end plate are planes, the outer side faces of the front-end radian end plate and the rear-end radian end plate are cambered surfaces, the inner side faces of the front-end steel belt and the rear-end steel belt are respectively abutted with the outer side faces of the front-end radian end plate and the rear-end radian end plate, the front-end steel belt is fixedly connected with the rear-end steel belt, the front-end steel belt transfers clamping force to the fuel cell stack after sequentially passing through the front-end radian end plate and the front end plate, and the rear-end steel belt transfers the clamping force to the fuel cell stack after sequentially passing through the rear-end radian end plate and the rear end plate. According to the binding type locking structure, bonding force is uniformly applied to the fuel cell stack by virtue of the steel belts so as to play a buffer role, so that the performance of the fuel cell stack is improved, and the service life of the fuel cell stack is prolonged.
Description
Technical field
The present invention relates to field of fuel cell technology, more particularly to a kind of fuel cell pack steel band cluster locking knot
Structure.
Background technology
Fuel cell is the device that the chemical energy of Oxidizing and Reducing Agents is directly changed into electric energy by electrocatalytic reaction,
It is a kind of efficient, safe and clean, flexible new-generation technology.Proton Exchange Membrane Fuel Cells therein has efficiency because of it
High, energy density is big, reaction temperature is low, noiselessness, the remarkable advantage such as pollution-free and in terrestrial power generation station, electric motor car and portable
The aspects such as power supply are with a wide range of applications.Fuel battery inside is mainly by PEM, electro chemical catalyst, expansion
Scattered layer and bipolar plates composition.When the fuel cell is operating, its following course of reaction of internal generation：Reacting gas expands in diffusion layer
Dissipate, when reacting gas reaches Catalytic Layer, by Catalyst Adsorption and electrocatalytic reaction occurs in Catalytic Layer；Anode reaction generates
Proton pass through PEM in be delivered to cathode side, electronics through external circuit reach negative electrode, with oxygen molecule reaction bonded Cheng Shui,
Release heat simultaneously.Electrode reaction is：
Anode (negative pole)：H2→2H++2e
Negative electrode (positive pole)：1/2O2+2H++2e→H2O
Cell reaction：H2+1/2O2→H2O
In one typical Proton Exchange Membrane Fuel Cells, membrane electrode is placed in the middle of two pieces of conductive guide plates, two pieces
Deflector is the deflector with cathode oxidant for the deflector of anode fuel respectively.The fuel cell so being formed is referred to as single
Battery, in order to increase the general power of whole Proton Exchange Membrane Fuel Cells, need by multiple monocells by directly fold by way of string
It is unified into set of cells, be fuel cell pack again.In a fuel cell stack, the two sides of one piece of pole plate can have a guiding gutter, and wherein one
Face can as the anode guide face of a membrane electrode, another side but also as the cathode diversion face of another adjacent membrane electrode,
This pole plate is called bipolar plates.Pile is tightened together by front end-plate, end plate and screw rod.
Traditional pile fastens pile using screw rod, and before and after this mode can cause pile, end plate has a small amount of buckling phenomenon,
Uneven to membrane electrode and graphite cake pressure, dismounting pile is loaded down with trivial details.
Some patents are made that improvement to the problems referred to above, and traditional screw rod locking is changed to be locked with steel band,
Its deficiency is that end plate is flat before and after pile, and end plate is under pressure in front and back is uneven, at the right angle of end plate
Place is area of stress concentration, produces shearing force to steel band.
Content of the invention
The invention mainly solves the technical problem of providing a kind of fuel cell pack steel band cluster locking mechanism, by increasing
If arc-shaped end plate makes steel band more uniformly seizing force are applied to fuel cell pack, serve the effect of mitigation, thus improving
The performance and used life of fuel cell pack.
For solving above-mentioned technical problem, one aspect of the present invention is：A kind of fuel cell pack steel band is provided
Cluster locking mechanism, it includes fuel cell pack, front end end plate and rear end end plate, and described front end end plate and rear end end plate are respectively
Positioned at the both sides of fuel cell pack, the outside of described front end end plate is sequentially provided with front end radian end plate and front end steel from inside to outside
Band, the outside of described rear end end plate is sequentially provided with rear end radian end plate and rear end steel band, described front end radian end plate from inside to outside
Medial surface with rear end radian end plate is plane, and lateral surface is cambered surface, and the medial surface of described front end steel band and rear end steel band is respectively
Fit with the lateral surface of front end radian end plate and rear end radian end plate, be fixedly connected between described front end steel band and rear end steel band,
Described front end steel band passes sequentially through front end radian end plate and clamping force is passed to fuel cell pack by front end end plate, described rear end steel
Band passes sequentially through rear end radian end plate and clamping force is passed to fuel cell pack by rear end end plate.
In a preferred embodiment of the present invention, described front end steel band and rear end steel band are all extended with some extensions,
The end of each extension described is equipped with lock-on connection, the position pair of lock-on connection on described front end steel band and rear end steel band
Should, a screw is screwed into front end steel band and the locking of rear end steel band in corresponding lock-on connection.
In a preferred embodiment of the present invention, described extension is two groups, two groups of all symmetrical being distributed in of extension
Front end steel band and the both sides of rear end steel band.
In a preferred embodiment of the present invention, the lateral surface of described front end steel band and rear end steel band is cambered surface.
In a preferred embodiment of the present invention, described fuel cell pack includes rear end conductive plate, graphite cake and membrane electrode
Group and front end conductive plate, described rear end conductive plate and front end conductive plate are located on graphite cake and a pair of side of membrane electrode assembly, institute
State graphite cake and the another of membrane electrode assembly is provided with insulation board to side.
In a preferred embodiment of the present invention, described front end end plate, front end radian end plate and front end steel band set jointly
Water swivel and pneumatic fitting group and hydrogen joint, described water swivel and pneumatic fitting group and hydrogen joint is had to extend to front end
Outside steel band.
The invention has the beneficial effects as follows：Fuel cell pack steel band cluster locking mechanism of the present invention is by setting up arc-shaped end plate
Make steel band more uniformly seizing force are applied to fuel cell pack, serve the effect of mitigation, thus improve fuel cell
The performance and used life of heap.
Brief description
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, will make to required in embodiment description below
Accompanying drawing be briefly described it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, can also be obtained other according to these accompanying drawings
Accompanying drawing, wherein：
Fig. 1 is a kind of exploded perspective view of present invention fuel cell pack steel band cluster locking mechanism one preferred embodiment.
Fig. 2 is that a kind of assembling structure of present invention fuel cell pack steel band cluster locking mechanism one preferred embodiment is illustrated
Figure.
In accompanying drawing, the labelling of each part is as follows：1st, rear end steel band, 2, rear end radian end plate, 3, rear end end plate, 4, rear end leads
Electroplax, 5, graphite cake and membrane electrode assembly, 6, front end conductive plate, 7, front end end plate, 8, water swivel and pneumatic fitting group, 9, front end arc
Degree end plate, 10, hydrogen joint, 11, front end steel band, 12, screw, 13, insulation board, 14, fuel cell pack, 15, extension, 151,
Root, 152, end, 16, lock-on connection.
Specific embodiment
The enforcement it is clear that described will be clearly and completely described to the technical scheme in the embodiment of the present invention below
Example is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, this area is common
All other embodiment that technical staff is obtained under the premise of not making creative work, broadly falls into the model of present invention protection
Enclose.
Refer to Fig. 1, the embodiment of the present invention includes：
A kind of fuel cell pack steel band cluster locking mechanism, it includes fuel cell pack 14, front end end plate 7 and rear end end
Plate 3, described front end end plate 7 and rear end end plate 3 are located at the both sides of fuel cell pack 14 respectively, the outside of described front end end plate 7 by
It is sequentially provided with front end radian end plate 9 and front end steel band 11 from inside to outside, after the outside of described rear end end plate 3 is sequentially provided with from inside to outside
End radian end plate 2 and rear end steel band 1, the medial surface of described front end radian end plate 9 and rear end radian end plate 2 is plane, lateral surface
For cambered surface, the medial surface of described front end steel band 11 and rear end steel band 1 respectively with front end radian end plate 9 and rear end radian end plate 2
Lateral surface fit, be fixedly connected between described front end steel band 11 and rear end steel band 1, the mode being fixedly connected include bolt connection,
Fast snap connection and weld, described front end steel band 11 passes sequentially through front end radian end plate 9 and clamping force is transmitted by front end end plate 7
To fuel cell pack 14, described rear end steel band 1 passes sequentially through rear end radian end plate 2 and clamping force is passed to combustion by rear end end plate 3
Material battery pile 14, concrete mechanism first passes to front end radian end respectively for the pressure of front end steel band 11 and rear end steel band 1 generation
Plate 9 and rear end radian end plate 2 make it be deformed, and the effect yet with front end end plate 7 and rear end end plate 3 is so that front end arc
The deformation of degree end plate 9 and rear end radian end plate 2 can not directly affect fuel cell pack, and its key point is just because of front end radian end
Plate 9 and front end end plate 7 and rear end radian end plate 2 and the effect of cooperating of rear end end plate 3, protect fuel cell pack not to be subject to
Impact, thus improve performance and used life.
Some extensions 15, the end of each extension 15 described are all extended with described front end steel band 11 and rear end steel band 1
Portion 152 is equipped with lock-on connection 16, and described front end steel band 11 is corresponding with the position of lock-on connection 16 on rear end steel band 1, a screw
12 are screwed in corresponding lock-on connection 16 and lock front end steel band 11 and rear end steel band 1, and described extension 15 is divided into two groups, two groups
The both sides being distributed in front end steel band 11 and rear end steel band 1 by way of symmetrically or non-symmetrically for the extension 15, wherein preferably
Scheme is symmetrical expression, its uniform force, and the preferred amount of described extension 15 is every side two, and two groups totally four, four are prolonged
Extending portion 15 shape is identical, is the tabular being gradually reduced from root 151 to end 152 width, the track of its transition is arc,
Pass through arc transition between two extensions 15 of its homonymy, the pulling force between steel band can be made soft uniformly, teel band
Durability degree, meanwhile, the lock-on connection 16 on the end 152 of extension 15 can reduce by only two lock-on connection institutes
The huge pulling force bearing, allows steel band and the safety of screw and service life preferably to be ensured, also preferably distributes simultaneously
Stress.The lateral surface of described front end steel band 11 and rear end steel band 1 is cambered surface, and steel band uses the method for monoblock type parcel so as to right
The pressure of fuel cell unit both sides is more comprehensively uniform.
Described fuel cell pack includes rear end conductive plate 4, graphite cake and membrane electrode assembly 5 and front end conductive plate 6, described rear end
Conductive plate and front end conductive plate are located on graphite cake and a pair of side of membrane electrode assembly, described graphite cake and membrane electrode assembly another
Side is provided with insulation board 13, described front end end plate, front end radian end plate and front end steel band are provided with water swivel and sky jointly
Gas joint group 8 and hydrogen joint 10, described water swivel and pneumatic fitting group and hydrogen joint extend to outside the steel band of front end.
The beneficial effect of fuel cell pack steel band cluster locking mechanism of the present invention is：
By setting up arc-shaped end plate so that seizing force is more uniformly applied to fuel cell pack by steel band, serve mitigation
Effect, thus improve the performance and used life of fuel cell pack.
The foregoing is only embodiments of the invention, not thereby limit the present invention the scope of the claims, every using this
Equivalent structure or equivalent flow conversion that bright description is made, or directly or indirectly it is used in the technology neck of other correlations
Domain, is included within the scope of the present invention.
Claims (4)
1. a kind of fuel cell pack steel band cluster locking mechanism, it includes fuel cell pack, front end end plate and rear end end plate, institute
State front end end plate and rear end end plate be located at respectively fuel cell pack both sides it is characterised in that described front end end plate outside by
It is sequentially provided with front end radian end plate and front end steel band from inside to outside, the outside of described rear end end plate is sequentially provided with rear end arc from inside to outside
Degree end plate and rear end steel band, the medial surface of described front end radian end plate and rear end radian end plate is plane, and lateral surface is cambered surface, institute
State front end steel band and the medial surface of rear end steel band is fitted with the lateral surface of front end radian end plate and rear end radian end plate respectively, described
It is fixedly connected between front end steel band and rear end steel band, described front end steel band passes sequentially through front end radian end plate and front end end plate will press from both sides
Clamp force passes to fuel cell pack, and described rear end steel band passes sequentially through rear end radian end plate and clamping force is passed to by rear end end plate
Fuel cell pack, each of described front end steel band and rear end steel band are all extended with four extensions, each extension described
The end in portion is equipped with lock-on connection, the position of lock-on connection on the position of lock-on connection and rear end steel band on the steel band of described front end
Corresponding, a screw is screwed into front end steel band and the locking of rear end steel band, described front end steel band and rear end in corresponding lock-on connection
Described extension on each of steel band is divided into two groups, all symmetrical distribution of each group of extension in two groups of extensions
The number of the described extension on the both sides of front end steel band and rear end steel band, each of described front end steel band and rear end steel band
Measure as every side two, two groups totally four, four extension shapes are identical, are the flat board being gradually reduced from root to end portion width
Shape, described extension is arc from root to the track of end transition, passes through arc transition between two extensions of homonymy.
2. fuel cell pack steel band cluster locking mechanism according to claim 1 is it is characterised in that described front end steel band
Lateral surface with rear end steel band is cambered surface.
3. fuel cell pack steel band cluster locking mechanism according to claim 1 is it is characterised in that described fuel cell
Heap includes rear end conductive plate, graphite cake and membrane electrode assembly and front end conductive plate, and described rear end conductive plate and front end conductive plate are located at
On a pair of side of graphite cake and membrane electrode assembly, described graphite cake and the another of membrane electrode assembly are provided with insulation board to side.
4. fuel cell pack steel band cluster locking mechanism according to claim 1 is it is characterised in that described front end end
Jointly it is provided with water swivel and pneumatic fitting group and hydrogen joint, described water swivel on plate, front end radian end plate and front end steel band
Extend to outside the steel band of front end with pneumatic fitting group and hydrogen joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410299261.8A CN104064802B (en) | 2014-06-26 | 2014-06-26 | Binding type locking structure for steel belts of fuel cell stack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410299261.8A CN104064802B (en) | 2014-06-26 | 2014-06-26 | Binding type locking structure for steel belts of fuel cell stack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104064802A CN104064802A (en) | 2014-09-24 |
| CN104064802B true CN104064802B (en) | 2017-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410299261.8A Active CN104064802B (en) | 2014-06-26 | 2014-06-26 | Binding type locking structure for steel belts of fuel cell stack |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2989410C (en) | 2015-06-19 | 2023-10-24 | Ballard Power Systems Inc. | Fuel cell stack with compression bands along the planar surfaces of the stack |
| CN105870484B (en) * | 2016-05-06 | 2018-12-04 | 同济大学 | A kind of device tied up for vehicle fuel battery pile |
| CN105870487B (en) * | 2016-06-24 | 2019-01-01 | 苏州弗尔赛能源科技股份有限公司 | A kind of pem fuel cell stack steel band clamp device |
| CN110534786A (en) * | 2019-09-27 | 2019-12-03 | 北京中氢绿能科技有限公司 | Fuel cell mounting structure, fuel cell stack and fuel cell assembly method |
| CN113340511A (en) * | 2021-05-24 | 2021-09-03 | 大连理工大学 | Method for testing pre-tightening force of proton exchange membrane fuel cell packaging part |
| US11746427B2 (en) | 2021-07-05 | 2023-09-05 | EvolOH, Inc. | Scalable electrolysis cell and stack and method of high-speed manufacturing the same |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7641999B2 (en) * | 2004-08-27 | 2010-01-05 | Honda Motor Co., Ltd. | Fuel cell stack |
| DE602008001372D1 (en) * | 2007-01-26 | 2010-07-08 | Topsoe Fuel Cell As | FUEL CELL STACK TERMINAL STRUCTURE AND SOLID OXYGEN FUEL CELL STACK |
| EP2395586B1 (en) * | 2009-02-05 | 2015-04-01 | Panasonic Corporation | Polymer electrolyte fuel cell stack |
| CN203983409U (en) * | 2014-06-26 | 2014-12-03 | 弗尔赛（上海）能源科技有限公司 | A kind of fuel cell pack steel band cluster locking mechanism |
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| CN104064802A (en) | 2014-09-24 |
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