CN205692910U - A kind of pem fuel cell stack steel band clamp device - Google Patents
A kind of pem fuel cell stack steel band clamp device Download PDFInfo
- Publication number
- CN205692910U CN205692910U CN201620642579.6U CN201620642579U CN205692910U CN 205692910 U CN205692910 U CN 205692910U CN 201620642579 U CN201620642579 U CN 201620642579U CN 205692910 U CN205692910 U CN 205692910U
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- China
- Prior art keywords
- plate
- steel band
- disc spring
- membrane electrode
- graphite cake
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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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Abstract
The utility model discloses a kind of pem fuel cell stack steel band clamp device, its structure includes the most successively: end plate, rear end copper bar, graphite cake membrane electrode assembly, front end copper bar, front end-plate, disc spring, disc spring pressing plate, then with U-shaped steel band, the locking of above-mentioned several parts is got up, certain arc-shaped surface is devised at end plate, in order to allow steel band that seizing force is more uniformly applied to graphite cake membrane electrode assembly, make groove in the steel band joint place of end plate, facilitate steel band screens;Front end-plate does draw-in groove, has allowed disc spring pressing plate may be inserted into, it is therefore an objective to allowing the first bolt prevent the torsion of steel band during screwing in cross bar, steel band will not encounter graphite cake.When graphite cake membrane electrode assembly length shortens, disc spring just unclamps certain length, offsets the length change of graphite cake membrane electrode assembly;During graphite cake membrane electrode assembly length, disc spring is compressed to, and offsets the length change of graphite cake membrane electrode assembly, it is ensured that the performance of pile does not interferes with the biggest.
Description
Technical field
This utility model relates to proton exchange fuel cell field, is specifically related to a kind of pem fuel cell stack steel
Band clamp device.
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 it is a kind of efficient, safe and clean, novel power generation device flexibly.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 at terrestrial power generation station, electric motor car and portable
The aspects such as formula power supply are with a wide range of applications.Fuel battery inside mainly by PEM, electro chemical catalyst,
Diffusion layer and bipolar plates composition.When the fuel cell is operating, its following course of reaction of internal generation: reacting gas is in diffusion layer
Diffusion, when reacting gas arrives Catalytic Layer, by Catalyst Adsorption and electrocatalytic reaction occurs in Catalytic Layer;Anode reaction is raw
The proton become is delivered to cathode side by PEM, and electronics arrives negative electrode through external circuit, becomes with oxygen molecule reaction bonded
Water, releases 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 the guide plate of two pieces of conductions, two pieces
Deflector is the deflector deflector with cathode oxidant of anode fuel respectively.The fuel cell so formed is referred to as single
Battery, in order to increase the general power of whole Proton Exchange Membrane Fuel Cells, needs multiple monocells string by the way of straight folding
It is unified into set of cells, is again fuel cell pack.In a fuel cell stack, can there be guiding gutter, Qi Zhongyi in the two sides of one piece of pole plate
Face can as the anode guide face of a membrane electrode, another side again can as the cathode diversion face of another adjacent membranes electrode,
This pole plate is called bipolar plates.Pile is tightened together by front end-plate, end plate and screw rod.
Tradition pile uses screw rod to fasten pile, 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.
Contrast patent " 200720199028.8 1 kinds of encapsulation apparatus for fastening belts ", its deficiency is:
1. using the stainless steel band of thick 0.1-0.5cm, steel band is before use, it is necessary to is first bent into that shape, once rolls over
Curved good, the length of steel band intermediate straight portion the most just secures, but the reason of " graphite cake and the membrane electrode " in the middle of fuel cell
Want that compressing length cannot the most accurately know, need to regulate, so steel band in that patent is once during activation test
Fine setting is just cannot be carried out after installation, cannot be very well control to Performance data.
2. expand with heat and contract with cold along with variations in temperature produces, the elasticity of membrane electrode reduces, the deformation of graphite cake face seal glue, makes
The length becoming " graphite cake and membrane electrode " in the middle of fuel cell changes, and this kind of steel band structure, it is impossible to adapt to this length and become
Change, fuel cell can be caused certain performance impact.
Contrast patent " 201420347326.7 1 kinds of fuel cell pack steel band cluster locking mechanisms ", its deficiency has:
1. battery is complete in assembly equipment assembling, after battery takes off from assembly equipment, further fasten, it is necessary to
With the biggest revolving force, spanner is limited by battery side, rotation can only in certain angle,
2., in fastener cycle, steel band can be twisted encounters graphite cake.
Utility model content
The purpose of this utility model is the problem above overcoming prior art to exist, it is provided that a kind of pem fuel
Battery pile steel band clamp device, steel band clamp device simple in construction of the present utility model, easy to use, can manual adjustment at any time
The length of battery pile, and this structure employing disc spring, can change with the length of adaptive equalization graphite cake and membrane electrode part, protect
The stability of card Performance data.
For realizing above-mentioned technical purpose, reaching above-mentioned technique effect, this utility model is achieved through the following technical solutions:
A kind of pem fuel cell stack steel band clamp device, comprising: graphite cake membrane electrode assembly, front end-plate, after
End plate, described front end-plate and end plate are separately positioned on the both sides of described graphite cake membrane electrode assembly, described front end-plate and described stone
It is provided with front end copper bar between ink plate membrane electrode assembly, between described end plate and described graphite cake membrane electrode assembly, is provided with rear end copper bar,
Fastened by steel band successively between described front end-plate, front end copper bar, graphite cake membrane electrode assembly, rear end copper bar, end plate, described steel band
For U-shape structure, two free ends of described steel band all in curve hook, the end face of described hook is provided with the long lumbar hole of bending, institute
Cross bar with threaded hole it is provided with, before through the screwed hole in described cross bar by the first bolt linking up with and be described in stating in hook
End plate fastens;
The outside of described end plate is provided with the groove that the flexure plane with described steel band matches, and described steel band snaps onto described
In groove;
The dual-side of described front end-plate is equipped with the stopper slot matched with described hook, and described cross bar is built in described extension
After hook, described hook is supported through described stopper slot, described hook by described stopper slot, if the end face of described front end-plate is provided with
Dry blind round hole, the center of described blind round hole is blind screw hole, is provided with disc spring guide pin bushing, described disc spring in described blind round hole
Guide pin bushing is threaded in described blind screw hole locking by the second bolt, described disc spring guide pin bushing is arranged with disc spring, described disc spring sets
Having disc spring pressing plate, described disc spring pressing plate to be provided with the screwed hole coordinated with described first bolt, described first bolt is through described
Disc spring pressing plate secures in the screwed hole in described cross bar;
Described disc spring pressing plate and the boss face that contact surface is convex of described disc spring, the both sides of described disc spring pressing plate are for being higher than
The edge of described boss face, the end face that described front end-plate contacts with described disc spring pressing plate is provided with two clamp bar slots, described card checkpost
Enter to described draw-in groove.
Further, the outside of described end plate is arc surface, and described groove is arranged on described arc surface, described rear end
Plate is plane with the contact surface of described rear end copper bar.
Further, the surrounding of described end plate is all wider than the surrounding of described graphite cake membrane electrode assembly.
Further, the surrounding of described front end-plate is all wider than the surrounding of described graphite cake membrane electrode assembly.
Further, the body of described rear end copper bar and the end face of described graphite cake membrane electrode assembly, described rear end copper
The terminal of row protrudes from the side of described graphite cake membrane electrode assembly.
Further, the body of described front end copper bar and the end face of described graphite cake membrane electrode assembly, described front end copper
The terminal of row protrudes from the side of described graphite cake membrane electrode assembly.
The beneficial effects of the utility model are:
One, pem fuel cell stack steel band clamp device of the present utility model, its structure is the most successively
Including: end plate, rear end copper bar, graphite cake membrane electrode assembly, front end copper bar, front end-plate, disc spring, disc spring pressing plate, then use U-shaped steel
The locking of above-mentioned several parts is got up by band, devises certain arc-shaped surface at end plate, in order to steel band more uniformly will be bundled
Power is applied to graphite cake membrane electrode assembly, has made groove in the steel band joint place of end plate, has facilitated steel band screens;The freedom of steel band
End is the form using hook, and is provided with on front end-plate and links up with the stopper slot coordinated, convenient locking, does on front end-plate
Draw-in groove, allows the disc spring pressing plate may be inserted into, it is therefore an objective to allow the first bolt prevent the torsion of steel band, steel band during screwing in cross bar
Graphite cake will not be encountered.
The use of disc spring, when being to allow graphite cake membrane electrode assembly length shorten, disc spring just unclamps certain length, offsets stone
The length change of ink plate membrane electrode assembly;During graphite cake membrane electrode assembly length, disc spring is compressed to, and offsets graphite cake membrane electrode
The length change of group, it is ensured that the performance of pile does not interferes with the biggest.Further, the second bolt installs rear and disc spring clamp surface
Concordant, aesthetic property is good.
Described above is only the general introduction of technical solutions of the utility model, in order to better understand skill of the present utility model
Art means, and can being practiced according to the content of description, below with preferred embodiment of the present utility model and coordinate accompanying drawing detailed
Describe in detail bright as after.Detailed description of the invention of the present utility model is shown in detail in by following example and accompanying drawing thereof.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in this utility model embodiment technology, embodiment technology will be retouched below
In stating, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this utility model
Some embodiments, for those of ordinary skill in the art by, on the premise of not paying creative work, it is also possible to according to
These accompanying drawings obtain other accompanying drawing.
Fig. 1 is the explosive view of this utility model pile;
Fig. 2 is the front view of pile after this utility model assembles
Fig. 3 is the rearview of Fig. 2;
Fig. 4 is the profile having assembled rear pile rear end;
Fig. 5 is the profile having assembled rear pile front end;
Fig. 6 is the structural representation of this utility model assembling process first stage;
Fig. 7 is the structural representation of this utility model assembling process second stage;
Wherein, 1-end plate, 11-groove, 2-rear end copper bar, 3-graphite cake membrane electrode assembly, 4-steel band, 41-links up with, 42-
Long lumbar hole, 5-front end copper bar, 6-cross bar, 7-front end-plate, 71-stopper slot, 72-draw-in groove, 73-blind round hole, 74-female thread is blind
Hole, 8-disc spring guide pin bushing, 9-the second bolt, 10-disc spring, 11-disc spring pressing plate, 110-edge, 111-boss face, 12-the first bolt.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under making creative work premise
The every other embodiment obtained, broadly falls into the scope of this utility model protection.
Embodiment
With reference to shown in Fig. 1-3, the present embodiment discloses a kind of pem fuel cell stack steel band clamp device, should
Device includes successively: end plate 1, rear end copper bar 2, graphite cake membrane electrode assembly 3, front end copper bar 5, front end-plate 7, disc spring 10, disc spring
Pressing plate 11, is enclosed within the outside of above-mentioned end plate 1, successively by end plate 1, rear end copper bar 2, graphite cake membrane electrode assembly by steel band 4
3, front end copper bar 5, front end-plate 7 locking are got up, and then the locking of above-mentioned disc spring pressing plate 11 are installed by the first bolt 12.
In the present embodiment, using end plate 1 as the rear end of device, using front end-plate 1 as the front end of device, and graphite
Plate membrane electrode assembly 3 is the main part of battery pile.
Concrete, above-mentioned steel band 4 is U-shape structure, and the face that steel band 4 contacts with end plate 1 is bending arc-shaped, above-mentioned steel band
Two free ends of 4 all in curve hook 41, the bending direction of on a steel band 4 two hooks 41 is in opposite directions, and upper
The end face stating hook 41 is provided with the long lumbar hole 42 of bending, in above-mentioned hook 41 in be provided with cross bar 6 with threaded hole, by first
Hook 41 is fastened with above-mentioned front end-plate 7 by bolt 12 through the screwed hole in above-mentioned cross bar 6.
As shown in Figure 4, the outside of above-mentioned end plate 1 is arc surface, is provided with above-mentioned on the arc surface of above-mentioned end plate 1
The groove 11 that the flexure plane of steel band 4 matches, above-mentioned steel band 4 snaps onto in above-mentioned groove 11, above-mentioned end plate 1 and above-mentioned rear end
The contact surface of copper bar 2 is plane.
The surrounding of above-mentioned end plate 1 is designed to all be wider than the surrounding of above-mentioned graphite cake membrane electrode assembly 3, by rear end copper bar 2
The end face of body and above-mentioned graphite cake membrane electrode assembly 3, the terminal of above-mentioned rear end copper bar 2 protrudes from above-mentioned graphite cake film electricity
The side of pole group 3.
As it is shown in figure 5, the dual-side at above-mentioned front end-plate 7 is equipped with the stopper slot 71 matched with above-mentioned hook 41, on
Stating after cross bar 6 is built in above-mentioned hook 41, above-mentioned hook 41 is through above-mentioned stopper slot 71, and above-mentioned hook 41 is by above-mentioned stopper slot 71
Supporting, the end face of above-mentioned front end-plate 7 is provided with some blind round hole 73, and the center of above-mentioned blind round hole 73 is blind screw hole
74, above-mentioned blind round hole 73 is provided with disc spring guide pin bushing 8, above-mentioned disc spring guide pin bushing 8 is threaded to above-mentioned blind screw hole 74 by the second bolt 9
Middle locking, above-mentioned disc spring guide pin bushing 8 is provided with disc spring 10, and above-mentioned disc spring 10 is provided with disc spring pressing plate 11, on above-mentioned disc spring pressing plate 11
Being provided with the screwed hole coordinated with above-mentioned first bolt 12, above-mentioned first bolt 12 secures to above-mentioned horizontal stroke through above-mentioned disc spring pressing plate 11
In screwed hole in bar 6.
Concrete, above-mentioned disc spring pressing plate 11 and the boss face that contact surface is convex 111 of above-mentioned disc spring 10, above-mentioned disc spring pressure
The both sides of plate 11 are the edge 110 higher than above-mentioned boss face 111, the end face that above-mentioned front end-plate 7 contacts with above-mentioned disc spring pressing plate 11
Being provided with two clamp bar slots 72, above-mentioned edge 110 snaps in above-mentioned draw-in groove 72.Purpose is to allow the first bolt screw in cross bar process
In prevent the torsion of steel band, steel band will not encounter graphite cake.
Further, the surrounding of above-mentioned front end-plate 7 is all wider than the surrounding of above-mentioned graphite cake membrane electrode assembly 3;Above-mentioned front end copper bar 5
Body and the end face of above-mentioned graphite cake membrane electrode assembly 3, the terminal of above-mentioned front end copper bar 5 protrudes from above-mentioned graphite cake membrane electrode
The side of group 3.
The installation steps of the device in the present embodiment are as follows: by end plate 1, rear end copper bar 2, graphite cake membrane electrode assembly 3, front
End copper bar 5, front end-plate 7 are stacked together, as shown in Figure 6;Disc spring guide pin bushing 8 is installed on front end-plate 7 with the second bolt 9, will
Disc spring 10 is placed on disc spring guide pin bushing 8, installs steel band 4, and cross bar 6 is installed in the hook 41 of steel band 4, as shown in Figure 7.
Disc spring pressing plate 11 is installed, in the corresponding stopper slot 71 of the partial insertion front end-plate 7 of disc spring pressing plate 11, sees Fig. 6;With
One bolt 12, through the counterbore on disc spring pressing plate 11, is connected on cross bar 6 and screws, and finally having assembled effect sees Fig. 2.
Its structure includes the most successively: end plate, rear end copper bar, graphite cake membrane electrode assembly, front end copper bar, front end
Plate, disc spring, disc spring pressing plate, then get up the locking of above-mentioned several parts with U-shaped steel band, devise certain circular arc table at end plate
Face, in order to allow steel band that seizing force is more uniformly applied to graphite cake membrane electrode assembly, makes in the steel band joint place of end plate
Groove, facilitates steel band screens;The free end of steel band is the form using hook, and is provided with on front end-plate and to coordinate with linking up with
Stopper slot, convenient locking, front end-plate does draw-in groove, has allowed disc spring pressing plate may be inserted into, it is therefore an objective to allowed the first bolt screw in
Preventing the torsion of steel band during cross bar, steel band will not encounter graphite cake.
The use of disc spring, when being to allow graphite cake membrane electrode assembly length shorten, disc spring just unclamps certain length, offsets stone
The length change of ink plate membrane electrode assembly;During graphite cake membrane electrode assembly length, disc spring is compressed to, and offsets graphite cake membrane electrode
The length change of group, it is ensured that the performance of pile does not interferes with the biggest.Further, the second bolt installs rear and disc spring clamp surface
Concordant, aesthetic property is good.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses this practicality new
Type.Multiple amendment to these embodiments will be apparent from for those skilled in the art, is determined herein
The General Principle of justice can realize in the case of without departing from spirit or scope of the present utility model in other embodiments.Cause
This, this utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.
Claims (6)
1. a pem fuel cell stack steel band clamp device, comprising: graphite cake membrane electrode assembly, front end-plate, rear end
Plate, described front end-plate and end plate are separately positioned on the both sides of described graphite cake membrane electrode assembly, described front end-plate and described graphite
It is provided with front end copper bar between plate membrane electrode assembly, between described end plate and described graphite cake membrane electrode assembly, is provided with rear end copper bar, institute
Stating and fastened by steel band successively between front end-plate, front end copper bar, graphite cake membrane electrode assembly, rear end copper bar, end plate, described steel band is
U-shape structure, two free ends of described steel band all in curve hook, the end face of described hook is provided with the long lumbar hole of bending, described
Cross bar with threaded hole it is provided with in hook, will hook and described front end through the screwed hole in described cross bar by the first bolt
Plate fastens;
It is characterized in that, the outside of described end plate is provided with the groove that the flexure plane with described steel band matches, described steel band card
Enter in described groove;
The dual-side of described front end-plate is equipped with the stopper slot matched with described hook, and described cross bar is built in described hook
After, described hook is supported through described stopper slot, described hook by described stopper slot, and the end face of described front end-plate is provided with some
Blind round hole, the center of described blind round hole is blind screw hole, is provided with disc spring guide pin bushing in described blind round hole, and described disc spring is led
Overlapping and be threaded in described blind screw hole locking by the second bolt, described disc spring guide pin bushing is arranged with disc spring, described disc spring is provided with
Disc spring pressing plate, described disc spring pressing plate is provided with the screwed hole coordinated with described first bolt, and described first bolt passes described dish
Spring pressing plate secures in the screwed hole in described cross bar;
Described disc spring pressing plate and the boss face that contact surface is convex of described disc spring, the both sides of described disc spring pressing plate are higher than described
The edge of boss face, the end face that described front end-plate contacts with described disc spring pressing plate is provided with two clamp bar slots, described edge snap in
In described draw-in groove.
Pem fuel cell stack steel band clamp device the most according to claim 1, it is characterised in that described rear end
The outside of plate is arc surface, and described groove is arranged on described arc surface, described end plate and the contact surface of described rear end copper bar
For plane.
Pem fuel cell stack steel band clamp device the most according to claim 2, it is characterised in that described rear end
The surrounding of plate is all wider than the surrounding of described graphite cake membrane electrode assembly.
Pem fuel cell stack steel band clamp device the most according to claim 1, it is characterised in that described front end
The surrounding of plate is all wider than the surrounding of described graphite cake membrane electrode assembly.
Pem fuel cell stack steel band clamp device the most according to claim 1, it is characterised in that described rear end
The body of copper bar and the end face of described graphite cake membrane electrode assembly, the terminal of described rear end copper bar protrudes from described graphite cake film
The side of electrode group.
Pem fuel cell stack steel band clamp device the most according to claim 1, it is characterised in that described front end
The body of copper bar and the end face of described graphite cake membrane electrode assembly, the terminal of described front end copper bar protrudes from described graphite cake film
The side of electrode group.
Priority Applications (1)
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CN201620642579.6U CN205692910U (en) | 2016-06-24 | 2016-06-24 | A kind of pem fuel cell stack steel band clamp device |
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CN201620642579.6U CN205692910U (en) | 2016-06-24 | 2016-06-24 | A kind of pem fuel cell stack steel band clamp device |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105870487A (en) * | 2016-06-24 | 2016-08-17 | 苏州弗尔赛能源科技股份有限公司 | Proton exchange membrane fuel cell stack steel strip fastening device |
CN107732276A (en) * | 2017-10-30 | 2018-02-23 | 深圳市南科燃料电池有限公司 | A kind of fuel cell that can improve end plate stress |
CN111969236A (en) * | 2020-08-28 | 2020-11-20 | 东风汽车集团有限公司 | Device and method for fastening proton exchange membrane fuel cell stack binding band |
-
2016
- 2016-06-24 CN CN201620642579.6U patent/CN205692910U/en not_active Expired - Fee Related
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105870487A (en) * | 2016-06-24 | 2016-08-17 | 苏州弗尔赛能源科技股份有限公司 | Proton exchange membrane fuel cell stack steel strip fastening device |
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 |
CN107732276A (en) * | 2017-10-30 | 2018-02-23 | 深圳市南科燃料电池有限公司 | A kind of fuel cell that can improve end plate stress |
CN107732276B (en) * | 2017-10-30 | 2018-09-18 | 深圳市南科燃料电池有限公司 | A kind of fuel cell that can improve end plate stress |
CN111969236A (en) * | 2020-08-28 | 2020-11-20 | 东风汽车集团有限公司 | Device and method for fastening proton exchange membrane fuel cell stack binding band |
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Granted publication date: 20161116 Termination date: 20190624 |