A kind of fuel cell membrane electrode hot pressing die
Technical field
This utility model relates to a kind of fuel cell membrane electrode hot pressing die, belongs to fuel cell membrane electrode technical field.
Background technology
Fuel cell (Fuel Cell) is a kind of energy conversion device, and it can be straight by the chemical energy being stored in fuel
Switching through and turn to electric energy, and do not limited by thermodynamic Carnot cycle, actual efficient energy conversion, close to 60%, is the efficiency of internal combustion engine
Twice.Fuel cell also has that energy density is big, environmental friendliness, low noise, high safety, load responding fast, fuel simultaneously
The advantages such as utilization rate is high, can supplement rapidly fuel, length in cruising time, scope on probation are wide, are widely used in middle-size and small-size electric station, just
Take formula communication power supply, family cogenerator, depopulated zone, field detection power supply, be also used as civil car, boat simultaneously
The empty electrical source of power such as space flight, submarine, is considered the most potential energy conversion apparatus.MEA(Membrane Electrode
Assembly) it is also called membrane electrode, is the heart of fuel cell, by CCM (catalyst coat film) and Yin/Yang pole diffusion layer three
Being grouped into, diffusion layer plays the effects such as water management, the distribution of material, transmission electronics, and CCM is the main place of electrochemical reaction,
Relate to generation and the problem such as the transmission of product and discharge of reaction.MEA as the elementary cell of electrochemical reaction of fuel battery,
Its design and preparation first have to follow the ultimate principle of electrochemical reaction of fuel battery and characteristic, and final with fuel cell
Use condition, economic benefit and preparation technology etc. combine and consider.Different process also will determine fuel cell
Service behaviour, service life, a series of vital problems of auxiliary facility etc..
Publication No.: 1689181, publication date is: 2005-10-26, and utility model is entitled: is used for simplifying manufacture and has
The fixture of thin-film material device and method, utilize two-layer flat board with holes to position diffusion layer, ion exchange membrane thermosol or pressing
To a kind of thin film together, thin film has the hole more smaller than diffusion layer, but this hole utilized on thin film is to position diffusion layer
Method owing to film itself is easily deformed and unreliable and accurate, diffusion layer is easy to when being completely covered on again hot pressing on thin film
Sliding, cause Yin/Yang pole diffusion layer, CCM combines not tight, and the discharge performance of battery is had greatly by the contact resistance of three
Impact.
Publication No.: 1653639, publication date is: 2005-08-10, and utility model is entitled: be used for making fuel cell portion
Part departs from the apparatus and method of pressfitting fixture, utilizes frame for movement to stablize pressing bolster in turn, and with the micropore in template
Membrane electrode upper and lower surface is applied pressure and evacuation makes membrane electrode depart from upper and lower pressing template, then move apart cope match-plate pattern, from
Lower bolster taking-up membrane electrode, but this method complex operation, mechanical precision requires height, reduces work efficiency.
Publication No.: 101183717, publication date is: 2008-05-21, and utility model is entitled: a kind of for hot pressing
The pressing mold device of standby fuel cell membrane electrode, each assembly of this utility model membrane electrode can be accurately positioned, and pass through
Flick spring can be automatically springed open by upper lower platen, the change of hot pressing temperature can well be detected by built-in temperature probe
Change.But having the disadvantage that structure is complicated, spring flicks pressing plate and is difficult to control to, in the face of various sizes of membrane electrode needs to change difference
Die head, reduce throughput rate.
Utility model content
The deficiency existed for prior art, this utility model purpose be to provide a kind of efficient, can be accurately positioned,
It is applicable to the fuel cell membrane electrode hot pressing die of many sizes.
To achieve these goals, this utility model is to realize by the following technical solutions:
A kind of fuel cell membrane electrode hot pressing die of the present utility model is identical with cope match-plate pattern structure including cope match-plate pattern
Lower bolster and for clamp device that cope match-plate pattern and lower bolster are combined;Cope match-plate pattern and lower bolster the most all wrap
Include plate center and open slotted fluting flat board, flat board plug and size cover plate for cover groove corresponding with the size of groove;Fluting
Flat board be formed around frame, be provided with multiple equally spaced adsorption hole in the region of described groove, the frame front of described groove carve
There is the length scales for determining membrane electrode three-dimensional space position;Described frame side has for connecting vacuum pump adaptor
Hole;Flat board is provided with multiple cylinder for block adsorption hole corresponding with adsorption hole beyond the Great Wall.
Above-mentioned vacuum pump adaptor is connected with PTFE hard tube by quick connector, and described PTFE hard tube is connected with vacuum pump
Connect.
Above-mentioned cover plate be formed around sealing rubber pad.
The inside of above-mentioned cover plate has a plurality of ventilation gully.
The thickness of above-mentioned fluting flat board is 10-20mm, and frame outside dimension is 300mm*300mm-500mm*500mm, described
The size of groove is 250mm*250mm-450mm*450mm, and the thickness of described frame is 50mm-100mm, and described length scales is
300mm-500mm, the area of described adsorption hole is 250mm*250mm-450mm*450mm.
A diameter of 2-10mm of each described adsorption hole, the degree of depth of adsorption hole is 5-10mm, adjacent two adsorption hole centers of circle
Spacing is 4-15mm.
The border of each independent described flat board plug is 2-15mm from outermost cylinder center of circle distance;Described flat board
The size of plug is 250mm*250mm-450mm*450mm, and the thickness of flat board plug is 2-5mm, and cylindrical height is all and adsorption hole
The degree of depth is consistent.
The size of above-mentioned cover plate is 250mm*250mm-450mm*450mm, and the thickness of cover plate is 5-13mm.
Diameter and the spacing of this utility model adsorption hole are sufficiently small, are similar to pixel-matrix, utilize adsorption hole to position
The locus of each assembly of membrane electrode, and utilize vac sorb, it is ensured that each assembly will not move easily, to large area
And the location of the totally different membrane electrode of shape particularly important, and simple in construction, processing ease, it is well suited for giving birth to efficiently in a large number
Produce.
Accompanying drawing explanation
Fig. 1 is a kind of fuel cell membrane electrode hot pressing die overall structure schematic diagram of the present utility model;
Fig. 2 is the partial enlarged drawing of A in Fig. 1;
Fig. 3 is the partial enlarged drawing of B in Fig. 1;
Fig. 4 is fluting flat board front schematic view;
Fig. 5 is fluting flat board reverse side schematic diagram;
Fig. 6 is flat board plug front schematic view;
Fig. 7 is flat board plug reverse side schematic diagram;
Fig. 8 is cover plate front schematic view;
Fig. 9 is cover plate reverse side schematic diagram;
In figure, the label of each parts is as follows: standing screw 1-1, lock nut 1-2, fluting flat board 2, frame 2-1, adsorption hole
2-2, quick connector 2-3, groove 2-4, flat board plug 3, cylinder 3-1, cover plate 4, sealing rubber pad 4-1, ventilation gully 4-2.
Detailed description of the invention
For the technological means making this utility model realize, creation characteristic, reach purpose and be easy to understand with effect, below
In conjunction with detailed description of the invention, this utility model is expanded on further.
The concrete hot pressing die that this utility model relates to refers to have certain thickness and the flat board of the 2-4 that slots, in groove 2-4
Having the adsorption hole 2-2 of certain size and quantity, the boundary at groove 2-4 is carved with scale in order to determine the three dimensions of membrane electrode
Position;In order to block the flat board plug 3 of adsorption hole 2-2;In order to form absorption cavity and provide the cover plate 4 of hot pressing plane, concrete
Case is implemented as follows.
One, concrete size, parameter and the effect of fluting flat board 2: fluting flat board 2 thickness 15mm, housing size 400mm*
400mm, the size of groove 2-4 need to be less than housing size, and this utility model uses 350mm*350mm, then frame 2-1 a size of 50mm
It is 1mm that width is carved with the length scales precision of 300mm, has equidistant adsorption hole 2-2 in groove 2-4, and the area of adsorption hole 2-2 is originally
Utility model uses the diameter 2mm of 300mm*300mm, adsorption hole 2-2, and center of circle spacing 4mm in hole, hole depth 5mm, at frame 2-
The side of 1 has the hole of the adaptor connecting vacuum pump, and adaptor quick connector 2-3 connects PTFE hard tube and is connected to vacuum
Pump.
Two, the concrete size of flat board plug 3 and parameter and effect: flat board plug 3 mainly has two effects at this utility model, 1,
Play when adsorption and diffusion layer blocking other unnecessary hole increase binding force, 2, when hot pressing block membrane electrode part hole, play
Protective effect to membrane electrode.The size of flat board plug 3 can arbitrarily regulate but be no more than the area of adsorption hole 2-2, this practicality
The flat board plug 3 of novel employing 300mm*300mm size, flat board plug 3 refers on the flat board of thickness 2mm with equally spaced cylinder
Body 3-1, the basal diameter of cylinder 3-1, spacing, highly desirable corresponding with adsorption hole 2-2, it is necessary to assure flat board plug 3 can be complete
In full insertion hole, the cylinder 3-1 base diameter that the present embodiment uses is 1.95mm (less than the 2mm in hole), cylinder 3-1 circle
In the heart away from being highly 5mm (identical with hole depth) for 4mm, cylinder 3-1, the boundary of each independent flat board plug 3 is from
The center of circle distance of the cylinder 3-1 in outside is 2mm, so can ensure that two flat board plug 3 coupling parts can ensure that seamless company
Connect.
Three, the design parameter of cover plate 43 and size and effect: this utility model that acts on of cover plate 4 mainly has two, 1,
Absorption cavity is formed together with fluting flat board 2 when adsorption and diffusion layer, 2, play the work of fixed flat planar plug 3 when hot pressing membrane electrode
With, its size needs corresponding with the size of fluting sheet groove so that cover plate 4 can cover groove 2-4 completely, and this utility model uses
A size of 345mm*345mm, thickness is 6mm, and needs to be covered with high 2-3mm close of an a width of 30mm at cover plate 4 edge
Envelope rubber blanket 4-1 (natural resiliency cause its highly can be little higher), has ventilation gully 4-2, ridge in the inside of cover plate 4
High 2mm (the cover plate 6mm+ ridge height 2mm+ flat board plug thickness 2mm+ deep 5mm of adsorption hole 2-2 should be equal to 15mm--slab-thickness), ridge width
10mm, the long 300mm of ridge.
Hot-press method concrete during experiment is as follows: (1) determines the membrane electrode size of hot pressing, is built by groove 2-4 with cover plate 4
Form absorption cavity, upset fit (action of lid is to take up cover plate (4) to cover downwards groove, now adsorption function face under
Side, needs to turn so that adsorption hole upwards by the zoarium of the two, at this time could spread carbon paper<according to coordinate setting>), make
Diffusion layer upward, is placed on adsorption hole 2-2 by adsorption hole 2-2, determine place coordinate (general we with plane system coordinate [x,
Y] two diagonal angles of diffusion layer, location or other active positions), open vacuum pump, diffusion layer fixed, after then sealing
CCM (catalyst coat film) continue to place, determine placement coordinate (location with diffusion layer as), it is ensured that in diffusion layer and CCM
Effective area (containing the part of catalyst, this part plays the effect of catalytic gas reaction thing, needs and carbon paper (diffusion layer)
Corresponding) overlap;(2) take the mutually isostructural fixture of another one (or referred to as lower mold), diffusion layer is placed on and in step (1)
In diffusion layer same coordinate, open vac sorb;Then by step (1), (2) fixture altogether, pass through with standing screw 1-1
The location, hole, location at four angles of mould, it is ensured that upper/lower die (i.e. the anode and cathode diffusion layer of fuel cell) is in the same space position
On, the standing screw 1-1 in hole, four location is locked by lock nut 1-2;(4) vacuum pump is closed, by upper and lower two moulds
Cover plate 4 is taken away, and adsorption hole 2-2 covers with flat board plug 3 (preventing hot pressing is that be not the stressed diffusion layer structure that causes of bore portion is broken
Bad), cover cover plate 4, remove standing screw 1-1, the flat plate mold of above-mentioned composition is taken hot pressing on hot press.
Of the present utility model ultimate principle and principal character and of the present utility model advantage have more than been shown and described.One's own profession
Skilled person will appreciate that of industry, this utility model is not restricted to the described embodiments, described in above-described embodiment and description
Principle of the present utility model is simply described, on the premise of without departing from this utility model spirit and scope, this utility model is also
Have various changes and modifications, in the range of these changes and improvements both fall within claimed this utility model.This utility model
Claimed scope is defined by appending claims and equivalent thereof.