CN110176618A - A kind of pile packaging technology and pile component - Google Patents
A kind of pile packaging technology and pile component Download PDFInfo
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- CN110176618A CN110176618A CN201910453365.2A CN201910453365A CN110176618A CN 110176618 A CN110176618 A CN 110176618A CN 201910453365 A CN201910453365 A CN 201910453365A CN 110176618 A CN110176618 A CN 110176618A
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- pile
- sealing plate
- bipolar plates
- laser
- electrode assembly
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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
- H01M8/18—Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells
- H01M8/184—Regeneration by electrochemical means
- H01M8/188—Regeneration by electrochemical means by recharging of redox couples containing fluids; Redox flow type batteries
-
- 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
- H01M8/2404—Processes or apparatus for grouping fuel cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/24—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
- H01M8/2475—Enclosures, casings or containers of fuel cell stacks
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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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- 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)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
This application discloses a kind of pile packaging technology and pile component, the pile which obtains can be used in such as vanadium cell flow battery.The technique transmits sealing plate by laser, sealing plate is directly melted to the circumferential surface for being coupled in pile element, to the side of each monocell of pile element is melting sealed, so that the sealing performance of the single electrode element of flow battery is promoted, and pass through melting coupled relation, so that thickness, gap are consistent between component element, homogeneity is good between each element, further promotes the service life of pile.
Description
Technical field
The present invention relates to full flow battery field, in particular to a kind of pile packaging technology can be with by the packaging technology
Obtain the pile component of good seal performance, service life length.
Background technique
Flow battery is a kind of secondary cell technology that electrochemical reaction occurs using liquid electrolyte.Different valence state is just
Negative electrode active material stores in the electrolytic solution, flows through pile under the promotion of circulating pump, makes it in different fluid reservoirs and half electricity
It is circulated in the closed circuit in pond.Ionic membrane flows through electrode surface as the diaphragm between battery plus-negative plate, electrolyte
Electrochemical reaction realizes the mutual conversion of electric energy and chemical energy, to realize the storage and release of electric energy.
At runtime, electrolyte realizes circulating between pile to fluid reservoir to flow battery under the action of pump.
In the prior art, the package casing of pile splicing structure generally passes through fastener and is pressed together on pile element, sets on package casing
It is equipped with labyrinth seal structure or is realized between encapsulation sealing plate by sealing ring and sealed.But due to being electrolysed in cell operation
There are certain pressure for liquid, and are easy to constitute sealing ring and corrode, and when sealing ring aging, are then easy to produce leakage, Wu Fabao
Demonstrate,proving pile, effective sealing, pile service life are low for a long time.
Summary of the invention
In view of this, the application provides a kind of pile packaging technology and pile component, the pile group obtained by the technique
Part sealing performance is promoted, and extends the service life of pile.
In order to solve the above technical problems, technical solution provided by the invention is in view of this, the application provides a kind of pile
Packaging technology, comprising:
In the circumferential surface for being parallel to pile element laminate stack of components direction, sealing plate is set；
In the first condition, laser transmits sealing plate and is absorbed by the contact surface of sealing plate and the pile element, makes the envelope
Plate is directly melted with the circumferential surface of the pile element and is coupled, and obtains pile component；
At least in first condition, the pile element is by the first pretightning force along laminated assembly stacking direction and protects
It holds and fits closely.
Preferably, the first condition includes:
The wavelength of the laser is 1800nm-2200nm；
The linear energy density of the laser is 2-5.8J/mm.
Preferably, in first condition, Xiang Suoshu sealing plate applies the second pretightning force perpendicular to the sealing plate, pre- second
Under the action of clamp force, sealing plate is bonded pile element, and sealing plate is made to be coupled to the circumferential surface of the pile element under laser action；
Under second pretightning force, gap is not more than 0.15mm between the sealing plate and the pile element.
Preferably, the sealing plate is the polymer material for being not less than 20% to the laser absorption rate.
Preferably, the face of the sealing plate towards pile element side is Non-smooth surface face；Or the pile element direction
The circumferential surface of the sealing plate is Non-smooth surface face.
Preferably, the pile element includes amberplex, and the amberplex two sides are symmetrically arranged with carbon
Felt, water conservancy diversion frame and electrode assembly, the water conservancy diversion frame are arranged in electrode assembly side；
The bipolar plates are of coupled connections with adjacent water conservancy diversion frame by melting；
The end face of the electrode assembly passes through laser melting with the opposite side of the sealing plate and couples with the sealing plate.
Preferably, the bipolar plates include:
Bipolar plates；
The polymer framework of bipolar plates side is set, and the bipolar plates are coupled with adjacent polymer framework by melting
Connection, the polymer framework is for clamping and fixing the bipolar plates, and the polymer framework is for being isolated the bipolar plates
With the runner on the water conservancy diversion frame.
A kind of pile component is parallel to the week in pile element laminate stack of components direction including pile element and being coupled in
The sealing plate in face, which is characterized in that the pile is obtained by pile packaging technology described above.
Preferably, the pile element includes amberplex, and the amberplex two sides are symmetrically arranged with carbon felt, lead
Flow frame and electrode assembly；The electrode assembly includes bipolar plates and the polymer framework that bipolar plates two sides are arranged in, bipolar plates two
The polymer framework of side grips the bipolar plates by melting coupling, and the bipolar plates pass through with adjacent water conservancy diversion frame
Hot melt is of coupled connections, and the end face of the end face of the bipolar plates and the water conservancy diversion frame is with the sealing plate under heat effect with compatible
The material of property.
Preferably, the end face of the electrode assembly and the opposite side of the sealing plate pass through laser melting and the sealing plate
Coupling.
Compared with prior art, detailed description are as follows by the application:
This application discloses a kind of pile packaging technology and pile component, the pile which obtains can be used for
In such as vanadium cell flow battery.Laser transmits sealing plate, and the contact surface between sealing plate and pile element is made directly to melt coupling.Electricity
Nuclear fuel is made of multiple cells in series, is imported with electrolyte in each monocell, when sealing plate melting is coupled in pile member
When on the circumferential surface of part, electrode assembly in each monocell, water conservancy diversion frame side coupled with sealing plate melting so that flow battery is electric
The sealing performance of heap is promoted.
The pile element includes bipolar plates, water conservancy diversion frame, carbon felt and amberplex；Adjacent water conservancy diversion frame passes through melting coupling
The fixed electrode assembly is closed, when applying the first pretightning force perpendicular to bipolar plates, the water conservancy diversion frame is closely fitted in electrode
On component, pile element is made to form rock-steady structure.Before the melting of water conservancy diversion frame itself and electrode assembly couple and guarantees to fit closely
It puts and is coupled again with sealing plate melting, further improve various components sealing performance in pile, extend the service life of pile.
Because pile element, under conditions of being compressed by the first pretightning force, surrounding is coupled with sealing plate, therefore electricity completely
Each component in Nuclear fuel has received identical first pretightning force, when packaged electrode assembly, water conservancy diversion frame with sealing plate coupling
Higher flatness is kept when conjunction, the distribution in gap is uniform between adjacent component, and the consistency of clearance distance is higher,
When circumferential surface couples one by one with four blocks of sealing plates in the case of this, even if the first pretightning force is revoked, sealing plate still can be into pile element
Each electrode assembly and water conservancy diversion frame apply the active force for preventing it from deforming, be displaced, therefore, even if having electrolyte in pile operating
When, gap between monocell will not be caused to generate variation because of the fluid pressure of electrolyte.And then improve single electrode in pile
The consistency of element.Since the consistency of single electrode element is high, after attempting to operate certain time, the coulombic efficiency of the pile
Attenuation rate not less than 5%, furthermore the decaying of energy efficiency and platform voltage is few, and then improve the service life of pile.
Detailed description of the invention
Fig. 1 is the explosive view that pile component is prepared by technique disclosed in the present application；
Fig. 2 is the encapsulation schematic diagram that pile component is prepared by technique disclosed in the present application；
Fig. 3 is the stacked state schematic diagram of each component in pile element.
Specific embodiment
It is with reference to the accompanying drawing and specific real in order to make those skilled in the art more fully understand technical solution of the present invention
Applying example, the present invention is described in further detail.
As shown, monocell described herein, refers to a battery unit in flow battery, including ion
The electricity that the collector of side is formed in exchange membrane, the carbon felt for being symmetricly set on amberplex two sides, deflector and electrode assembly
Pole；Since the bipolar plates in flow battery are often prefabricated layer structure, while playing the role of series-connected cell unit positive and negative anodes,
It is not easy to split under normal circumstances, therefore the monocell in the application is based on dividing made by electrochemistry angle, rather than to knot
The fractionation of structure.
Described herein transparent, referring to has good transmittance to visible light, but on other wavelength then not necessarily
It is transparent.
As shown, the application discloses a kind of pile packaging technology, in the first condition, laser transmits sealing plate, by sealing plate
Melting is coupled in the surface of pile element, obtains the pile component with good seal performance and longer life；And by coupling
Apply the first pretightning force along bipolar plates stacking direction during conjunction on the pile element, couples pile element
At the state being compacted is kept between each component in rear inside, the homogeneity of pile component is improved, pile group is further improved
The service life of part.
Pile packaging technology disclosed in the present application includes:
Sealing plate 3 is arranged in the circumferential surface of electrode assembly stacking direction in being parallel to pile element 1；
In the first condition, laser is melted from 3 side surface transmission of sealing plate, sealing plate 3 and 1 contact position of pile element,
3 direct-coupling of pile element 1 and sealing plate, obtains pile component, in the pile component, several laminated assemblies such as electrode assembly,
The side of deflector passes through laser and couples with the melting of sealing plate 3, to realize the sealing to flow cell pile.
Specifically, the first condition includes:
The wavelength of the laser is 1800nm-2200nm；
The linear energy density of the laser is 2-5.8J/mm.
Under this condition, apply the second pretightning force to sealing plate 3 perpendicular to sealing plate 3, make tight between sealing plate 3 and pile element 1
Closely connected conjunction；Apply the first pretightning force to pile element 1 along bipolar plates stacking direction；Make between sealing plate 3 and the pile element 1
Contact surface coupling is melted under laser irradiation, obtain pile component.
In the first condition, the contact surface between sealing plate 3 and pile element 1 receives the energy of laser beam and is converted into heat
Energy.After the completion of coupling, the gap between sealing plate 3 and pile element 1 is melted material filling, is formed along 3 thickness direction of sealing plate
Form the region for being not easy visually to be distinguished.
Since in the first condition, sealing plate 3 cools and solidifies again after being partially formed melting on direction of plane where it.The
The direction of two pretightning forces is 200-600N, more preferably 350N- perpendicular to 3 place plane of sealing plate, the size of the second pretightning force
600N.Under second pretightning force, gap is not more than 0.15mm between the sealing plate 3 and the pile element 1.When second pre-
When clamp force is applied to puddle always, the thermal stress that polymer melt thermal expansion generates can effectively eliminate, and then can have
Warpage caused by effect avoids polymer melt from thermally expanding or deformation.Further, since the presence of the second pretightning force, in conjunction with partial melting
Packaging technology can effectively eliminate the internal stress generated in polymer melt solidification process, further increase and couple lower sealing plate
Flatness prevents sealing plate from warpage occurs.
Second pretightning force can both be provided by the separate clamps for fixing closing plate 3, can also be straight by laser welding apparatus
Offer is connect, without separate set-up clamps.Second pretightning force can make sealing plate 3 be fitted in the circumferential surface of pile element 1, laser
The 3 polymer melting layers that can be formed in sealing plate 3 and 1 coating surface of pile element when passing through sealing plate side, the polymer melting
Cross-linking composition, the coupling layer of formation have the chemistry rearranged to polymer molecule to layer again under the action of the second pretightning force
Key, since polymer molecule is crosslinked again under pressure and laser action, the cross-linked layer chain entanglement density of formation increases, and passes through heat
Diffusion is gradually intertwined and tangles again, increases the tightly packed degree of strand, the chemical activity between electrolyte
It is lower, while improving the mechanical performance of sealing plate coupling, the weatherability of sealing plate 3 can be improved.When the second pretightning force is by independence
Fixture when providing, the fixture is preferably to have the plate jig of higher level degree, which is preferably that heating conduction is excellent
The plate made of the material of sealing plate 3 can not only transmit sealing plate heat and radiate in time, can also provide sealing plate 3 uniformly
Pretightning force, to guarantee that sealing plate 3 can be soldered in the higher situation of flatness；When the second pretightning force is direct by welding equipment
When offer, the second pretightning force applies external force to polymer melting layer, eliminates the thermal stress that polymer melt thermal expansion generates, is sealing
It is in 3 welding process of sealing plate it is also ensured that higher flat under the premise of 3 other parts of plate and 1 surface of pile element come into full contact with
Whole degree, and then guarantee the chemical property of various components in pile element 1.When being locally soldered, sealed under the second pretightning force
The other parts to be welded of plate 3 come into full contact with pile element circumferential surface, even if polymer melt thermal expansion still is able to guarantee envelope
Flatness after the coupling of plate 3, corresponding, polymer melt, which solidifies the internal stress generated, will not influence the plane of sealing plate entirety
Degree, and then improve the homogeneity in gap between each component in pile element 1.
Additionally due to the viscosity of the polymeric layer is high, mobility is much worse than metal material, therefore, perpendicular to the sealing plate 3
The second pretightning force applied can be further formed stable crosslinking coupling layer.
In this application, as shown, the pile element includes amberplex 21, carbon felt 22, water conservancy diversion frame 23 and electricity
Pole component, carbon felt 22, water conservancy diversion frame 23 and electrode assembly are successively symmetricly set on 21 two sides of amberplex, wherein the water conservancy diversion
The surrounding of the electrode assembly adjacent with its of frame 23 is coupled by laser melting.23 neighboring area of water conservancy diversion frame and the electrode group
Part neighboring area is the material under heat effect with compatibility.Electrode assembly includes bipolar plates 25 and is arranged at 25 liang of bipolar plates
The polymer framework 24 of side is mixed with electrically conductive graphite in the bipolar plates 25, therefore bipolar plates 25 itself are inhaled with good laser
Receive performance.In the application, laser penetration water conservancy diversion frame 23 is simultaneously absorbed by 25 material of bipolar plates, and laser is converted into thermal energy and realizes coupling.
25 two sides of bipolar plates are provided with polymer framework 24, and the polymer framework 24 clamps the bipolar plates 25 and passes through laser
Melting coupling forms electrode assembly.The outer edge of the polymer framework 24 is concordant with water conservancy diversion frame 23, therefore the polymerization of the application
Object framework 24 can cover the flow passage area on water conservancy diversion frame 23；When being passed through electrolyte in water conservancy diversion frame 23,23 upper runner of water conservancy diversion frame
Electrolyte in part does not contact directly with bipolar plates 25, it is possible to prevente effectively from electrolyte constitutes 25 edge of bipolar plates in runner
The problem of oxygen corrosion causes carbon flow to be lost, and then reduce 25 resistance of bipolar plates and increase, 25 material of bipolar plates of the positive side of monocell 2
There is bulging in material, and then reduces resistivity caused by bipolar plates 25 are lost because of conductive material and increase, and improves pile service life.
Due to, melting coupling is transmitted by laser between the polymer framework 24 and the water conservancy diversion frame 23 in electrode assembly,
So that the sealing performance in monocell is outstanding.
Further, since the end face of bipolar plates 25 described herein and the end face of the water conservancy diversion frame 23 be under heat effect
There is the material of compatibility with the sealing plate 3, therefore, the pile element 1 formed is stacked by monocell 2 in the application
Circumferential surface also has compatibility with the sealing plate 3 under heat effect.
The sealing plate 3,25 end face of bipolar plates, 23 end face of water conservancy diversion frame, polymer used in polymer framework 24 can be with
For a kind of fluoropolymer resin or the mixture of multiple polymers resin.One or more fluoropolymer resins are preferably thermoplastic poly
Close object.The fluoropolymer resin includes but is not limited to polyester (including aromatic series, semi-aromatic and aliphatic polyester)；Liquid crystal polymer
Including liquid crystal polyester；Polyamide includes aromatic series, semi-aromatic, fatty polyamide；Polycarbonate；Polyformaldehyde；Polyimides；
Polybenzimidazoles；Polyketone；Polyether-ether-ketone；Polyether-ketone；Polyether sulfone；Phenoxy resin；Polystyrene；Polyvinyl chloride, polyolefin (example
Such as polyethylene, polypropylene, ethylene/propene copolymer)；ABS；PVDF etc..
The polymer can also be added with other additives, such as the glass fibre of enhancing structure intensity, or have such as antioxygen
Agent, dyestuff, heat stabilizer, UV light stabilizer, weathering stabilizers, release agent, lubricant, nucleating agent, plasticizer, resists pigment
Electrostatic agent, fire retardant etc..For example, bipolar plates 25 can also add antioxygen in order to alleviate bipolar plates 25 by the corrosion of electrolyte
Agent etc., specific additional component can be selected according to pile component property actually required.
The polymer material of the sealing plate 3 should have preferable laser transmissivity to laser, be not limited to the present embodiment, institute
The preferable laser transmissivity of meaning, refers to no matter whether the sealing plate 3 colours, transparent or there are diffusing reflection surfaces, and sealing plate 3 is to a certain
The transmissivity for the laser that can be used for welding is greater than or equal to 20%, in the application, the laser be preferably wavelength be 1800~
2200nm laser.For purposes of this application, laser can preferably transmit sealing plate 3 and relatively in the surface quilt contacted with pile element
It absorbs.
When applying the second pretightning force perpendicular to sealing plate 3, polymer melt generates non-reversible deformation, to realize coupling.
Therefore, in this application, restriction of the color and transparency of sealing plate 3 not as the application to laser welding effect be not yet
Realize the necessary factor of coupling.
First pretightning force is parallel to stacked elements direction in the pile element, is not less than to the application of pile element
The pressure of 10kN, first pretightning force are more preferably 12-20kN.Under conditions of being compressed by the first pretightning force, pile element 1
Surrounding is coupled in completely on sealing plate 3, and when the first pretightning force is revoked, sealing plate 3 can be applied each element into pile element 1
Add the active force for preventing it from deforming, be displaced.Therefore, (such as electrode assembly and adjacent water conservancy diversion frame, ion exchange between adjacent elements
Film and adjacent carbon felt) distribution in gap is uniform, and the consistency of clearance distance is higher, even if having electrolysis in pile operating
When liquid, gap between various components will not be caused to generate variation because of the fluid pressure of electrolyte.For flow battery, this
The tiny displacement of kind is enough to influence the consistency of single electrode element in pile.Therefore, pile component disclosed in the present application passes through
After 1 year continuous service, bipolar plates are not easy expansion and are unlikely to deform, not easy-to-leak liquid, coulombic efficiency, energy efficiency, the platform of the pile
Voltage attenuation further improves pile service life less than 5%.
The application also protects the process example 1 to process obtained pile, in conjunction with Fig. 1, Fig. 2 and Fig. 3, including pile element
1 and the sealing plate 3 that is set to outside the pile element 1.The pile element 1 includes electrode assembly, the deflector stacked gradually
23, carbon felt 22, amberplex 21, carbon felt 22 and deflector 23.Pile element 1 is parallel to the circumferential surface of electrode assembly stacking direction
It is provided with sealing plate 3, the sealing plate 3, which joins end to end, covers the circumferential surface of 1 stacking direction of pile element.Sealing plate 3 makes in the first condition
Each layer of electrode assembly of the circumferential surface stacking of pile element 1, deflector side are coupled with sealing plate 3.
In the pile embodiment, pile element 1 is coupled on sealing plate 3 under conditions of bearing the first pretightning force, by
It is covered on the surrounding of pile element 1 in sealing plate 3, so that pile element 1 is still under sealing plate when the first pretightning force is revoked
3 and coupling regime provide stress.
The pile component obtained packaged by the above method is tested, the VOSO containing 1.15mol/L is used4Electrolysis
Liquid, in 10mA/cm2When, the arithmetic mean of instantaneous value of voltage efficiency is 90%, and the arithmetic mean of instantaneous value of energy efficiency is 86%.Using containing
There is the VOSO of 1.15mol/L4Electrolyte, carried out under the conditions of charge cutoff voltage is 1.5V, discharge cut-off voltage is 0.7V
Test, detects pile after continuous running some cycles, it is as follows to obtain data:
Wherein, traditional pile component is not provided with sealing plate, or is formed by other means rather than under lasing condition poly-
Polymer melt coupling, therefore do not have sealing plate tensile strength test parameter.As can be seen from the above table, encapsulation work disclosed in the present application
The resistivity that skill can effectively reduce bipolar plate end face increases.
After the operation by certain time, the variance of single battery voltage is not more than 6mV, and coulombic efficiency variation is not more than
5.4%, energy efficiency variation is no more than 1.8%, and the dispersion degree for comparing single battery voltage with tradition electric pile structure is small, shows list
The homogeneity of battery dramatically increases, and coulombic efficiency and energy efficiency variation are much smaller than traditional electric pile structure, and then extend pile
Service life.
The above is only the preferred embodiment of the present invention, it is noted that above-mentioned preferred embodiment is not construed as pair
Limitation of the invention, protection scope of the present invention should be defined by the scope defined by the claims..For the art
For those of ordinary skill, without departing from the spirit and scope of the present invention, several improvements and modifications can also be made, these change
It also should be regarded as protection scope of the present invention into retouching.
Claims (10)
1. a kind of pile packaging technology characterized by comprising
In the circumferential surface for being parallel to pile element laminate stack of components direction, sealing plate is set；
In the first condition, laser transmission sealing plate and absorbed by the contact surface of sealing plate and the pile element, make the sealing plate with
The circumferential surface of the pile element directly melts coupling, obtains pile component；
At least in first condition, the pile element is by the first pretightning force along laminated assembly stacking direction and keeps tight
Closely connected conjunction.
2. a kind of pile packaging technology according to claim 1, which is characterized in that the first condition includes:
The wavelength of the laser is 1800nm-2200nm；
The linear energy density of the laser is 2-5.8J/mm.
3. a kind of pile packaging technology according to claim 1, which is characterized in that in first condition, Xiang Suoshu sealing plate
Apply the second pretightning force perpendicular to the sealing plate, under the action of the second pretightning force, sealing plate is bonded pile element, and sealing plate is made to exist
The circumferential surface of the pile element is coupled under laser action；
Under second pretightning force, gap is not more than 0.15mm between the sealing plate and the pile element.
4. a kind of pile packaging technology according to claim 2, which is characterized in that the sealing plate is to the laser absorption
Rate is not less than 20% polymer material.
5. a kind of pile packaging technology according to claim 1, which is characterized in that the sealing plate is towards the pile element
The face of side is Non-smooth surface face；Or the circumferential surface of the pile element towards the sealing plate is Non-smooth surface face.
6. a kind of pile packaging technology according to claim 1, which is characterized in that the pile element includes ion exchange
Film, the amberplex two sides are symmetrically arranged with carbon felt, water conservancy diversion frame and electrode assembly, and the water conservancy diversion frame is arranged in electrode assembly
Side；
The electrode assembly is of coupled connections with adjacent water conservancy diversion frame by melting；
The end face of the electrode assembly passes through laser melting with the opposite side of the sealing plate and couples with the sealing plate.
7. a kind of pile packaging technology according to claim 6, which is characterized in that the electrode assembly includes:
Bipolar plates；
The polymer framework of bipolar plates side is set, and the bipolar plates pass through the melting company of coupling with adjacent polymer framework
Connect, the polymer framework for clamping and fixing the bipolar plates, the polymer framework for be isolated the bipolar plates and
Runner on the water conservancy diversion frame.
8. a kind of pile component, the circumferential surface in pile element laminate stack of components direction is parallel to including pile element and being coupled in
Sealing plate, which is characterized in that the pile is obtained by the described in any item pile packaging technologies of claim 1-7.
9. a kind of pile component according to claim 8, which is characterized in that the pile element includes amberplex,
The amberplex two sides are symmetrically arranged with carbon felt, water conservancy diversion frame and electrode assembly；The electrode assembly includes bipolar plates and sets
The polymer framework in bipolar plates two sides is set, the polymer framework of bipolar plates two sides grips described by melting coupling
Bipolar plates, the bipolar plates are of coupled connections with adjacent water conservancy diversion frame by hot melt, the end face of the bipolar plates and the water conservancy diversion frame
End face be under heat effect with the sealing plate have compatibility material.
10. a kind of pile component according to claim 9, which is characterized in that the end face of the electrode assembly and the envelope
The opposite side of plate passes through laser melting and couples with the sealing plate.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112164815A (en) * | 2020-10-26 | 2021-01-01 | 乐山晟嘉电气股份有限公司 | Electric pile shrouding assembly system |
| CN112271315A (en) * | 2020-10-26 | 2021-01-26 | 乐山晟嘉电气股份有限公司 | Assembly process of electric pile sealing plate |
| CN112264709A (en) * | 2020-10-26 | 2021-01-26 | 乐山晟嘉电气股份有限公司 | Welding process for side sealing plate of manifold nozzle of vanadium flow battery |
| CN112687936A (en) * | 2020-12-31 | 2021-04-20 | 深圳市氢瑞燃料电池科技有限公司 | Combined type packaging shell |
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| CN112264709A (en) * | 2020-10-26 | 2021-01-26 | 乐山晟嘉电气股份有限公司 | Welding process for side sealing plate of manifold nozzle of vanadium flow battery |
| CN112687936A (en) * | 2020-12-31 | 2021-04-20 | 深圳市氢瑞燃料电池科技有限公司 | Combined type packaging shell |
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| CN110176618B (en) | 2020-07-28 |
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