CN107732276B - A kind of fuel cell that can improve end plate stress - Google Patents
A kind of fuel cell that can improve end plate stress Download PDFInfo
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- CN107732276B CN107732276B CN201711035312.6A CN201711035312A CN107732276B CN 107732276 B CN107732276 B CN 107732276B CN 201711035312 A CN201711035312 A CN 201711035312A CN 107732276 B CN107732276 B CN 107732276B
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- plate
- wedge
- pile
- force transmission
- transmission mechanism
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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
-
- 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
Abstract
The present invention provides a kind of fuel cells that can improve end plate stress,Including pile,Front end-plate,End plate,Preceding collector plate,Collector plate afterwards,Fasten locking mechanism and force transmission mechanism,Front end-plate and end plate are separately positioned on the both sides of pile,Preceding collector plate is arranged between front end-plate and pile,Collector plate is arranged between end plate and pile afterwards,Front end-plate,Preceding collector plate,Pile,Collector plate afterwards,It is locked successively by fastening locking mechanism between end plate and force transmission mechanism,It includes a plurality of restraint zone to fasten locking mechanism,Two free ends of each restraint zone are each provided with a band connection block that can be stacked,Band connection block is equipped with wedged hole,Force transmission mechanism is arranged between front end-plate and restraint zone,It further includes wedge-shaped stud to fasten locking mechanism,And force transmission mechanism can be pressed on front end-plate when screwing in wedge-shaped stud into wedged hole.According to the fuel cell provided by the invention that can improve end plate stress, end plates flex situation can be improved.
Description
Technical field
The present invention relates to battery technology field more particularly to a kind of fuel cells that can improve end plate stress.
Background technology
Fuel cell is the electrochemical appliance that a kind of chemical energy by fuel (such as methanol, hydrogen) is converted into electric energy, letter
Claim pile, Proton Exchange Membrane Fuel Cells (PEMFC) is exactly one such.In practical applications, usually single by up to a hundred
Battery is connected into a pile, and the foozle of each component and the rigging error in assembling process will influence assembly
Quality, or even seriously affect the performance of pile.And assembling pressure is one of the important parameter for influencing fuel cell pile performance,
It is worth it is too small the contact between bipolar plates and gas diffusion layers can be caused too small, finally influence sealing effect, such as GDL
Porosity is excessive, fuel losses, excessive contact resistance, while if contact resistance crosses conference pile output power is dropped
It is low；And its value crosses conference and keeps contact excessive, can damage MEA (especially outermost GDL), leads to the microcellular structure of GDL
It damages, GDL fibers are crushed, and hinder passing through for gas.No matter which kind of situation, will lead to the reduction of battery performance.
Under the premise of ensureing pile leakproofness, fuel cell should be made to play maximum power as far as possible, make electrochemistry
Electronics caused by reaction can form electric current in the transmission in pile.It is sufficiently large that this just needs certain clamp device to provide
Fastening force the various components of fuel cell are embodied by electric pile structure, to ensure in battery cell and battery list
Close contact between body, therefore, fuel cell pack Integrated design and optimization are can to improve the fuel cell of end plate stress to grind
Study carefully one of hot spot.Through development in a few years, the clamp device of pile can be divided into two kinds：One is the lockings of traditional bolt and nut
Mechanism；Another kind is steel band binding mechanism.
Traditional bolt and nut retaining mechanism --- although simple in structure, assembly and disassembly is convenient, before and after causing pile
The phenomenon that end plate curved edge intermediate projections, lead to membrane electrode and graphite bi-polar plate discontinuity, and occupied space amount it is big,
Pile weight increase etc..It is required under lightweight trend in existing compactedness, this scheme is only applied to small-sized laboratory electricity
Heap.
In view of the above-mentioned problems, some patents are made that improvement, traditional bolt and nut retaining mechanism is changed to steel band binding
Mechanism.The critical piece of this mechanism includes steel band, steel taping head and steel band locking element.Wherein representative is：In
State applies for a patent CN200610171874.9 (as shown in Figure 1) and CN205692910U (as shown in Figure 2).
Patent CN200610171874.9 discloses a kind of with improved unit battery assembly coupling structure, including fuel
The medial surface of battery stack, front end-plate and end plate, front end radian end plate and rear end radian end plate is plane, and lateral surface is arc
Face, and centre is provided with groove, locking element is nut-screw.
Patent CN205692910U discloses a kind of pem fuel cell stack steel band clamp device, including fuel electricity
Pond pile, front and back end plate, disc spring, disc spring pressing plate, steel band retention mechanism, U-shaped board etc. devise certain circular arc table in end plate
It is made in the steel band joint place of end plate to allow steel band that seizing force is more uniformly applied to graphite cake membrane electrode assembly in face
Groove facilitates steel band screens.
Scheme shortcoming is in patent CN200610171874.9, although arc-shaped end plate is relative to plane end plate, energy
So that end plate stress is made moderate progress, but be equipped with groove among this arc-shaped end plate, makes the arc area of stress concentration stress on end plate both sides,
It does not stress completely in centre, can still cause to generate flexural deformation among end plate.
Scheme shortcoming is in patent CN205692910U, and the processing and manufacturing realization on steel band head is more difficult, and adopts
It is to be bolted, larger-size pin need to be selected, while assembling and taking, this is unfavorable for production assembly.In addition,
It, need to be in both sides while the consistency of adjusting and regulated quantity in order to make both sides uniform force as possible when adjusting the preload of steel band
Bad control.
Invention content
For overcome the deficiencies in the prior art, the present invention provides a kind of fuel cell that can improve end plate stress,
The end plate stressing conditions of fuel cell can be improved.
Specifically, its technical solution is as follows：
A kind of fuel cell that can improve end plate stress, including pile, front end-plate, end plate, preceding collector plate, rear afflux
Plate, fastening locking mechanism and force transmission mechanism, the front end-plate and the end plate are separately positioned on the both sides of the pile, institute
Collector plate is arranged between the front end-plate and the pile before stating, and end plate in the rear and the electricity is arranged in the rear collector plate
Between heap, the front end-plate, the preceding collector plate, the pile, the rear collector plate, the end plate and the force transmission mechanism
Between successively by the fastening locking mechanism lock, the fastening locking mechanism includes a plurality of restraint zone, each fastening
Two free ends of band are each provided with a band connection block that can be stacked, and the band connection block is equipped with wedged hole, described
Force transmission mechanism is arranged between the front end-plate and the restraint zone, and the fastening locking mechanism further includes wedge-shaped stud, and
The force transmission mechanism can be pressed on the front end-plate when screwing in the wedge-shaped stud into the wedged hole.
It is further improved as to technical solution, the diameter edge of the wedged hole gradually increases close to the side of the pile
Greatly.
It is further improved as to technical solution, the diameter edge of the wedged hole gradually subtracts close to the side of the pile
It is small.
Be further improved as to technical solution, further include cover board, with the one-to-one nut of the restraint zone, it is described
Cover board, which is arranged, to be provided on the outside of the restraint zone, the cover board for wearing the logical of the nut and the wedge-shaped stud
Hole, the nut be configured to not to be located in rotationally in the through-hole and with the wedge-shaped stud screw-thread fit, it is described
The end positioned at the cover board side of wedge-shaped stud is equipped with the opening for coordinating with screwdriver, and the wedge shape stud is located at
The end of the force transmission mechanism side is configured to compress the force transmission mechanism.
It is further improved as to technical solution, the wedge shape stud is equipped with rank positioned at one end of the force transmission mechanism
Terraced axis is arranged with sleeve on the multi-diameter shaft, and the multi-diameter shaft can rotate in the sleeve, and the sleeve is positioned in
On the force transmission mechanism, the return spring abutted with the band connection block is cased on the sleeve.
It being further improved as to technical solution, the force transmission mechanism includes wedge block, float plate and elastic element,
The side of the wedge block is provided with limiting slot, and the restraint zone is arranged in the limiting slot, the wedge block it is another
Side is wedge shape, and side of the float plate towards the restraint zone, which is provided with, to match with the wedge block wedge angle
Inclined-plane, side of the float plate towards the front end-plate are provided with the limit hole to match with the elastic element.
It is further improved as to technical solution, side of the float plate towards the front end-plate is plane, described
The middle part of side of the float plate towards the restraint zone is plane, in the float plate with the wedge block wedge angle phase
The both sides at the middle part are arranged in the inclined-plane matched, and the through-hole for wearing bolt is provided in the plane at the middle part.
Be further improved as to technical solution, the plane at the middle part and with the wedge block wedge angle phase
It is provided with transition vertical plane between the inclined-plane matched, there is preset interval between the transition vertical plane and the wedge block,
And the tapered ramp end peak 2mm distances are higher by, the transition vertical plane is configured to the wedge block
It is limited.
It is further improved as to technical solution, the transition vertical plane is vertical with the plane at the middle part.
It is further improved as to technical solution, the band connection block of two free ends of the restraint zone is respectively
One band connection block and the second band connection block, first band link block coupling part deviate first to the direction far from the pile
Pre-determined distance, the second band connection block coupling part deviates the second pre-determined distance to close to the direction of the pile, when described
The wedged hole on first band link block, the second band connection block stack between two parties it is another when rising, be formed by combination bore with
The wedge angle of the wedge shape stud is just consistent.
The present invention at least has the advantages that：
1) in the present invention, band connection wedged hole in the block and wedge-shaped stud group wedgewise tension mechanism, the installation of this mechanism are torn open
It unloads conveniently to improve to a certain extent and is bolted the time-consuming drawback of assembly, while the consistency of controllable adjustable amount.
2) force transmission mechanism is introduced, force transmission mechanism is arranged between front end-plate and restraint zone, and is inserted into the wedged hole
Force transmission mechanism can be pressed on front end-plate when entering wedge-shaped stud, the setting of force transmission mechanism can avoid steel band from being applied directly to
Front end-plate prevents front end-plate from deforming.Further, force transmission mechanism uses wedge block, wedge block sliding on float plate inclined-plane
When dynamic, suffered restraint zone band pretightning force is transmitted to float plate, and suffered power is decomposed into a vertical force and one by float plate
A horizontal force, wherein uniform vertical force is transmitted to front end-plate by elastic element, and horizontal force is then born by itself, due to wedge shape
Sliding block is can to slide up and down, so the horizontal force that float plate is born significantly is reduced compared with pervious structure, to stress
Concentration phenomenon is improved；
3) by arranging elastic element, the pretightning force of restraint zone can uniformly be reached front end-plate, while can compensate for fastening
There is stress relaxation phenomenon in band adjustment process.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment cited below particularly, and coordinate
Appended attached drawing, is described in detail below.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the isometric explosive view of fuel cell in the embodiment of the present invention 1；
Fig. 2 is the isometric views after fuel cell assembly in the embodiment of the present invention 1；
Fig. 3 is the assembly isometric views after fuel cell removal cover board in the embodiment of the present invention 1；
Fig. 4 is the sectional view of front end after the completion of fuel cell assembly in the embodiment of the present invention 1；
Fig. 5 is the sectional view of rear end after the completion of fuel cell assembly in the embodiment of the present invention 1；
Fig. 6 is the sectional view of front end after the completion of fuel cell assembly in the embodiment of the present invention 2.Main element symbol description：
1- end plates；Collector plate after 2-；3- piles, 4- restraint zones；Collector plate before 5-；6- front end-plates；7- float plates；8- is covered
Plate；9,10,12,13- connectors；11- bolts；41- first band link blocks；42- the second band connection blocks；43- sleeves；44- return bullets
Spring；45- wedge shape studs；46- nuts；71- positioning columns；72- elastic elements；73- wedge blocks.
Specific implementation mode
Hereinafter, various embodiments of the present invention will be described more fully.The present invention can have various embodiments, and
It can adjust and change wherein.It should be understood, however, that：There is no various embodiments of the present invention are limited to spy disclosed herein
Determine the intention of embodiment, but should invention is construed as cover to fall into the spirit and scope of various embodiments of the present invention
All adjustment, equivalent and/or alternative.
Hereinafter, disclosed in the term " comprising " that can be used in various embodiments of the present invention or " may include " instruction
Function, operation or the presence of element, and do not limit the increase of one or more functions, operation or element.In addition, such as existing
Used in various embodiments of the present invention, term " comprising ", " having " and its cognate are meant only to indicate special characteristic, number
Word, step, operation, the combination of element, component or aforementioned item, and be understood not to exclude first one or more other
Feature, number, step, operation, the combination of element, component or aforementioned item presence or increase one or more features, number,
Step, the possibility of operation, the combination of element, component or aforementioned item.
In various embodiments of the present invention, it includes listing file names with to state "or" or " at least one of A or/and B "
Any combinations of word or all combinations.For example, statement " A or B " or " at least one of A or/and B " may include A, may include
B may include A and B both.
The statement (" first ", " second " etc.) used in various embodiments of the present invention can be modified in various implementations
Various constituent element in example, but respective sets can not be limited into element.For example, presented above be not intended to limit the suitable of the element
Sequence and/or importance.The purpose presented above for being only used for differentiating an element and other elements.For example, the first user fills
It sets and indicates different user device with second user device, although the two is all user apparatus.For example, not departing from each of the present invention
In the case of the range of kind embodiment, first element is referred to alternatively as second element, and similarly, second element is also referred to as first
Element.
It should be noted that：In the present invention, unless otherwise specific regulation and definition, the arts such as " installation ", " connection ", " fixation "
Language shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection or being integrally connected；It can be machine
Tool connects, and can also be electrical connection；Can be directly connected to, and it can be indirectly connected through an intermediary；It can be two
Connection inside element.For the ordinary skill in the art, above-mentioned term can be understood at this as the case may be
Concrete meaning in invention.
In the present invention, those skilled in the art are it is to be appreciated that indicating position or position relationship in text
Term be orientation based on ... shown in the drawings or position relationship, be merely for convenience of description of the present invention and simplification of the description, without
It is that the device of instruction or hint meaning or element must have a particular orientation, with specific azimuth configuration and operation, therefore
It is not considered as limiting the invention.
The term used in various embodiments of the present invention is used only for the purpose of describing specific embodiments and not anticipates
In limitation various embodiments of the present invention.As used herein, singulative is intended to also include plural form, unless context is clear
Chu it is indicated otherwise.Unless otherwise defined, otherwise all terms (including technical terms and scientific terms) used herein have
There is meaning identical with the normally understood meaning of various embodiments of the present invention one skilled in the art.The term
(term such as limited in the dictionary generally used) is to be interpreted as having and situational meaning in the related technical field
Identical meaning and the meaning that Utopian meaning or too formal will be interpreted as having, unless in the various of the present invention
It is clearly defined in embodiment.
Embodiment 1
A kind of fuel cell that can improve end plate stress is present embodiments provided, the end plate of fuel cell can be improved
Stressing conditions.
Specifically, also referring to Fig. 1-Fig. 5, which includes pile 3, front end-plate
6, end plate 1, preceding collector plate 5, rear collector plate 2, fastening locking mechanism and force transmission mechanism.
Wherein, pile 3 is formed by a cells in series up to a hundred, and monocell has various structures type, excellent in the present embodiment
The fuel cell (PEMFC) of end plate stress can be improved by being selected as proton exchange membrane, it is mainly by membrane electrode (MEA, including proton
Exchange membrane, electrode, gas diffusion layers and catalyst layer), the compositions such as bipolar plates.Membrane electrode is the core component of PEMFC, is electronics
Conductive insulation, hydrionic good conductor.Proton exchange membrane only allows the proton that anode generates by reaching cathode, and anode produces
Raw electronics then reaches cathode by external circuit.
In the present embodiment, front end-plate 6 and end plate 1 are separately positioned on the both sides of pile 3, and preceding collector plate 5 is arranged preceding
Between end plate 6 and pile 3, rear collector plate 2 be arranged between end plate 1 and pile 3, front end-plate 6, preceding collector plate 5, pile 3, after
It is locked successively by fastening locking mechanism between collector plate 2, end plate 1 and force transmission mechanism.Wherein, fastening locking mechanism includes
A plurality of restraint zone 4.Preferably, restraint zone 4 is steel band.
Two free ends of each restraint zone 4 are each provided with a band connection block that can be stacked, and band connection block is equipped with
Wedged hole.Force transmission mechanism is arranged between front end-plate 6 and restraint zone 4, and fastening locking mechanism further includes wedge-shaped stud 45, and past
Force transmission mechanism can be pressed on front end-plate 6 when screwing in wedge-shaped stud 45 in wedged hole.
Specifically, the band connection block of two free ends of restraint zone 4 is respectively first band link block 41 and the second band connection
Block 42,41 coupling part of first band link block deviate the first pre-determined distance to the direction far from pile 3, and the second band connection block 42 connects
Socket part point deviates the second pre-determined distance, the wedge on first band link block 41, the second band connection block 42 to close to the direction of pile 3
When shape hole stacks another between two parties, it is just consistent with the wedge angle of wedge-shaped stud 45 to be formed by combination bore.Preferably, first
Pre-determined distance and the second pre-determined distance are 0.5mm.
Preferably, the diameter edge of wedged hole gradually increases close to the side of pile 3.
Preferably, further include cover board 8, with 4 one-to-one nut 46 of restraint zone, cover board 8 is arranged in the outer of restraint zone 4
Side.The through-hole for wearing nut 46 and wedge-shaped stud 45 is provided on cover board 8, nut 46 is configured to rotationally not fixed
Position in through-hole and with 45 screw-thread fit of wedge-shaped stud, the end positioned at 8 side of cover board of wedge-shaped stud 45 is equipped with being used for and spiral shell
The opening of silk knife cooperation, the end positioned at force transmission mechanism side of wedge-shaped stud 45 are configured to compress force transmission mechanism.
In the present embodiment, nut 46 is configured to not be located in rotationally in through-hole and match with 45 screw thread of wedge-shaped stud
Preferably, the outer surface of nut 46 is polygonized structure to one kind of conjunction, and through-hole has matched with 46 outer surface of nut
Shape so that nut 46, which is limited in through-hole, to be rotated.
Preferably, wedge-shaped stud 45 positioned at one end of force transmission mechanism is equipped with multi-diameter shaft, is arranged with sleeve 43 on multi-diameter shaft,
Sleeve 43 is configured to not be located on force transmission mechanism rotationally, and the return bullet abutted with band connection block is cased on sleeve 43
Spring 44.
Preferably, force transmission mechanism includes wedge block 73, float plate 7 and elastic element 72, and the side of wedge block 73 is set
It is equipped with limiting slot, restraint zone 4 is arranged in limiting slot, and the side of float plate 7 is provided with and 73 wedge angle phase of wedge block
The inclined-plane matched, the other side of float plate 7 are provided with the limit hole to match with elastic element 72.
Preferably, front end-plate 6 is plane end plate, and end face both sides are symmetrical arranged the limit blind hole of elastic element 72, with
And middle part is equipped with boss, boss is equipped with the tapped blind hole for 8 fixing bolt of cover board.
Preferably, side of the float plate 7 towards front end-plate 6 is plane, the middle part of side of the float plate 7 towards restraint zone 4
For plane, the both sides that the inclined-plane that matches with 73 wedge angle of wedge block in float plate 7 is arranged in the middle part of this are flat in the middle part of this
The through-hole for wearing bolt is provided on face.
Preferably, transition is provided between the plane in the middle part of this and the inclined-plane to match with 73 wedge angle of wedge block to hang down
It faces directly, there is gap, and transition vertical plane is configured to wedge block 73 between transition vertical plane and wedge block 73
It is limited.
Preferably, the countersunk head through-hole for wearing wedge-shaped stud 45 is provided in the plane at middle part, countersunk head depth can root
It is adjusted according to the regulated quantity of restraint zone, preferably 2mm, and equipped with the right-handed thread coordinated with wedge-shaped stud 45.
Preferably, transition vertical plane is vertical with the plane at middle part.
In the present embodiment, sleeve 43 is positioned in one kind on force transmission mechanism preferably, and sleeve 43 is towards floating
The outer surface of one end of movable plate 7 is polygonized structure, be provided in float plate 7 with the matched groove in 43 outer surface of sleeve, towards
One end of float plate 7 is set in a groove.
Preferably, end plate 1 is radian type end plate, and 1 end of end plate matches recessed equipped with the flexure plane with restraint zone 4
Slot, restraint zone 4 snap onto in groove.
Preferably, front end-plate 6 is plane end plate, and 6 outside of front end-plate is equipped with the limiting slot to match with restraint zone 4, preceding
Be additionally provided on end plate 6 it is multiple be respectively used to, connection water, air, hydrogen etc. connector 9,10,12,13.
Preferably, elastic element 72 is disc spring, is sleeved on positioning column 71.
The present embodiment at least has the advantages that：
1) in the present embodiment, 45 groups of wedgewise tension mechanisms of band connection wedged hole in the block and wedge-shaped stud, this mechanism peace
Dress, convenient disassembly improve bolt 11 and are linked and packed time-consuming drawback to a certain extent, while controllable adjustable amount is consistent
Property.
2) force transmission mechanism is introduced, force transmission mechanism is arranged between front end-plate 6 and restraint zone 4, and is inserted into wedged hole
Force transmission mechanism can be pressed on front end-plate 6 when wedge-shaped stud 45, the setting of force transmission mechanism can avoid steel band from directly acting on
To front end-plate 6, prevent front end-plate 6 from deforming.Further, force transmission mechanism uses wedge block 73, and wedge block 73 is in float plate 7
When being slided on inclined-plane, suffered restraint zone 4 is transmitted to float plate 7 with pretightning force, and suffered power is decomposed into one by float plate 7
Vertical force and a horizontal force, wherein uniform vertical force is transmitted to front end-plate 6 by elastic element 72, and horizontal force is then by itself
It bears, since wedge block 73 is can to slide up and down, so the horizontal force that float plate 7 is born is apparent compared with pervious structure
Reduction, improved to stress concentration phenomenon；
3) by arranging elastic element 72, the pretightning force of restraint zone 4 can uniformly be reached front end-plate 6, can compensate for simultaneously
There is stress relaxation phenomenon in 4 adjustment process of restraint zone.
Embodiment 2
A kind of fuel cell that can improve end plate stress is present embodiments provided, the end plate of fuel cell can be improved
Stressing conditions.
Compared with Example 1, the main distinction of the present embodiment is：
In the present embodiment, as shown in fig. 6, the diameter edge of wedged hole is gradually reduced close to the side of pile 3.
Correspondingly, when mounted, wedge-shaped stud 45 is inserted into from the bottom up in wedged hole and realizes adjusting.
In addition, in the present embodiment, nut 46 is located at the outside of cover board 8.
It will be appreciated by those skilled in the art that the accompanying drawings are only schematic diagrams of a preferred implementation scenario, module in attached drawing or
Flow is not necessarily implemented necessary to the present invention.
It will be appreciated by those skilled in the art that the module in device in implement scene can be described according to implement scene into
Row is distributed in the device of implement scene, can also be carried out respective change and is located at the one or more dresses for being different from this implement scene
In setting.The module of above-mentioned implement scene can be merged into a module, can also be further split into multiple submodule.
Aforementioned present invention serial number is for illustration only, does not represent the quality of implement scene.
Disclosed above is only several specific implementation scenes of the present invention, and still, the present invention is not limited to this, Ren Heben
What the technical staff in field can think variation should all fall into protection scope of the present invention.
Claims (8)
1. a kind of fuel cell that can improve end plate stress, which is characterized in that including pile, front end-plate, end plate, preceding afflux
Plate, rear collector plate, fastening locking mechanism and force transmission mechanism, the front end-plate and the end plate are separately positioned on the pile
Both sides, the preceding collector plate is arranged between the front end-plate and the pile, it is described after collector plate setting holds in the rear
Between plate and the pile, the front end-plate, the preceding collector plate, the pile, the rear collector plate, the end plate and institute
It states and is locked successively by the fastening locking mechanism between force transmission mechanism, the fastening locking mechanism includes a plurality of restraint zone,
Two free ends of each restraint zone are each provided with a band connection block that can be stacked, and the band connection block is equipped with wedge
Shape hole, the force transmission mechanism are arranged between the front end-plate and the restraint zone, and the fastening locking mechanism further includes wedge
Shape stud, and while screwing in into the wedged hole the wedge-shaped stud force transmission mechanism can be pressed on the front end-plate
On；
The fuel cell further includes cover board and the one-to-one nut of the restraint zone, and the cover board is arranged in the fastening
The outside of band, the through-hole for wearing the nut and the wedge-shaped stud is provided on the cover board, and the nut is configured
For can not rotationally be located in the through-hole and with the wedge-shaped stud screw-thread fit, being located at for the wedge shape stud be described
The end of cover board side is equipped with opening for coordinating with screwdriver, and the wedge shape stud is located at the force transmission mechanism side
End is configured to compress the force transmission mechanism；
The wedge shape stud is equipped with multi-diameter shaft positioned at one end of the force transmission mechanism, and sleeve is arranged on the multi-diameter shaft, and
The multi-diameter shaft can rotate in the sleeve, and the sleeve is positioned on the force transmission mechanism, be cased on the sleeve
The return spring abutted with the band connection block.
2. the fuel cell according to claim 1 that end plate stress can be improved, which is characterized in that the wedged hole it is straight
Diameter edge gradually increases close to the side of the pile.
3. the fuel cell according to claim 1 that end plate stress can be improved, which is characterized in that the wedged hole it is straight
Diameter edge is gradually reduced close to the side of the pile.
4. the fuel cell according to claim 1 that end plate stress can be improved, which is characterized in that the force transmission mechanism packet
Wedge block, float plate and elastic element are included, the side of the wedge block is provided with limiting slot, and the restraint zone is arranged in institute
State in limiting slot, the other side of the wedge block is wedge shape, side of the float plate towards the restraint zone be provided with
The inclined-plane that the wedge block wedge angle matches, side of the float plate towards the front end-plate are provided with and the bullet
The limit hole that property element matches.
5. the fuel cell according to claim 4 that end plate stress can be improved, which is characterized in that the float plate towards
The side of the front end-plate is plane, and the middle part of side of the float plate towards the restraint zone is plane, the float plate
Upper be arranged with the inclined-plane that the wedge block wedge angle matches is arranged on the both sides at the middle part, the plane at the middle part
It is useful for wearing the through-hole of bolt.
6. the fuel cell according to claim 5 that end plate stress can be improved, which is characterized in that the plane at the middle part
Be provided with transition vertical plane between the inclined-plane to match with the wedge block wedge angle, the transition vertical plane with it is described
There is preset interval between wedge block, and be higher by the tapered ramp end peak 2mm distances, the transition vertical plane
It is configured to limit the wedge block.
7. the fuel cell according to claim 6 that end plate stress can be improved, which is characterized in that the transition vertical plane
It is vertical with the plane at the middle part.
8. the fuel cell according to claim 1 that end plate stress can be improved, which is characterized in that the two of the restraint zone
The band connection block of free end is respectively first band link block and the second band connection block, first band link block coupling part
The first pre-determined distance is deviated to the direction far from the pile, the second band connection block coupling part is to close to the pile
Direction deviates the second pre-determined distance, when the wedged hole on the first band link block, the second band connection block is folded between two parties
When putting another rise, it is just consistent with the wedge angle of the wedge-shaped stud to be formed by combination bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711035312.6A CN107732276B (en) | 2017-10-30 | 2017-10-30 | A kind of fuel cell that can improve end plate stress |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN108346814B (en) * | 2018-03-11 | 2023-12-26 | 江苏氢璞创能科技有限公司 | Fastening device for fuel cell stack |
| CN110190313A (en) * | 2019-04-25 | 2019-08-30 | 众泰新能源汽车有限公司 | Fuel cell pile bandage type compression fit structure and its design method |
| CN110767929B (en) * | 2019-12-26 | 2020-05-08 | 武汉众宇动力系统科技有限公司 | Bundling device for fuel cell stack |
| CN111816903B (en) * | 2020-09-07 | 2020-11-24 | 爱德曼氢能源装备有限公司 | Fuel cell stack with adjustable end plate stress |
| CN112310455B (en) * | 2020-10-28 | 2021-12-07 | 浙江海晫新能源科技有限公司 | Fastening method and fastening device of fuel cell stack and fuel cell |
| CN113258117B (en) * | 2021-04-30 | 2021-12-07 | 上海捷氢科技有限公司 | Height-adjustable fuel cell stack integrated structure |
| CN114267855B (en) * | 2021-12-22 | 2023-06-30 | 大同新研氢能源科技有限公司 | Method for improving pressure uniformity between end plates, end plate and fuel cell stack |
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