EP4244920A1 - Dispositif de serrage pour un empilement electrochimique, et assemblage forme par le dispositif de serrage et l'empilement electrochimique - Google Patents
Dispositif de serrage pour un empilement electrochimique, et assemblage forme par le dispositif de serrage et l'empilement electrochimiqueInfo
- Publication number
- EP4244920A1 EP4244920A1 EP21815572.9A EP21815572A EP4244920A1 EP 4244920 A1 EP4244920 A1 EP 4244920A1 EP 21815572 A EP21815572 A EP 21815572A EP 4244920 A1 EP4244920 A1 EP 4244920A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spring element
- stack
- electrochemical
- clamping
- clamping plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- 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
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/02—Hydrogen or oxygen
- C25B1/04—Hydrogen or oxygen by electrolysis of water
- C25B1/042—Hydrogen or oxygen by electrolysis of water by electrolysis of steam
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/60—Constructional parts of cells
- C25B9/67—Heating or cooling means
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/70—Assemblies comprising two or more cells
- C25B9/73—Assemblies comprising two or more cells of the filter-press type
- C25B9/75—Assemblies comprising two or more cells of the filter-press type having bipolar electrodes
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/70—Assemblies comprising two or more cells
- C25B9/73—Assemblies comprising two or more cells of the filter-press type
- C25B9/77—Assemblies comprising two or more cells of the filter-press type having diaphragms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/021—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant characterised by their composition, e.g. comprising materials providing for particular spring properties
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/32—Belleville-type springs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2465—Details of groupings of fuel cells
- H01M8/247—Arrangements for tightening a stack, for accommodation of a stack in a tank or for assembling different tanks
- H01M8/248—Means for compression of the fuel cell stacks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2222/00—Special physical effects, e.g. nature of damping effects
- F16F2222/02—Special physical effects, e.g. nature of damping effects temperature-related
- F16F2222/025—Cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2224/00—Materials; Material properties
- F16F2224/02—Materials; Material properties solids
- F16F2224/0208—Alloys
-
- 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
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
- H01M2008/1293—Fuel cells with solid oxide electrolytes
-
- 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
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
-
- 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
Definitions
- the present invention relates to the field of clamping devices and in particular to clamping devices for electrochemical stacks.
- Said electrochemical stacks considered are in particular stacks of the SOEC or SOFC type capable of operating at temperatures above 700° C.
- the invention relates in particular to a clamping device provided with a spring element intended to exert a force leading to the clamping, or even to the crushing, of the electrochemical stack.
- the spring element according to the terms of the present invention, is in particular an assembly of two spring washers of generally frustoconical shape and whose taper is oriented in two opposite directions.
- This spring element is also provided with thermalization means, and more particularly with a fluid conduit in which a cooling fluid is capable of flowing in order to maintain said spring element in a range of temperatures for which the force exerted by said element varies little.
- FIG. 1 represents an electrochemical device 100 known from the state of the art and described in document FR 3 045 215 Al.
- the electrochemical device comprises a stack 200 of solid oxides operating at high temperature clamped between two clamping plates 300 and 310 able to operate either in electrolyser mode or in fuel cell mode. Clamping rods, extending between the two clamping plates, are also implemented in order to maintain the clamping of the stack by the clamping plates.
- the electrochemical device 100 is generally referred to by one or other of the acronyms "SOEC"("Solid Oxide Electrolyser Cell”) or “SOFC”("Solid Oxide Full Cell”) when it operates, respectively, in electrolyser mode or in fuel cell mode.
- the stack 200 as illustrated in FIG. 2, comprises a stack 200 of elementary electrochemical cells 210 between which are interposed interconnectors 230 intended to ensure electrical contact between the elementary electrochemical cells. These interconnectors also comprise channels allowing the evacuation and/or the distribution of gas at the level of the elementary cells.
- Each elementary electrochemical cell comprises an electrolyte 210e interposed between an anode 210a and a cathode 210c.
- anode means of generally flat shape, for example in the form of a layer, which comprise two essentially parallel main faces and connected by an outline.
- the anode and the cathode of each elementary electrochemical cell generally comprise a porous layer, while the electrolyte forms a dense and tight layer.
- Each interconnector disposed on either side of an electrochemical cell forms, respectively, with the anode an anode compartment 230a for gas distribution and collection, and with the cathode a cathode compartment 230c for gas distribution and collection.
- the anode and the cathode are the site of electrochemical reactions, while the electrolyte allows the transport of ions from the cathode to the anode, or vice versa depending on whether the electrochemical device operates in electrolyser mode or in battery mode. fuel.
- the cathode compartment allows a supply of water vapor and an evacuation of the water reduction products, in particular hydrogen, while the anode compartment ensures, via a draining gas, the evacuation of the dioxygen produced from the oxidation of O 2- ions migrating from the cathode to the anode.
- the electrolysis mechanism (“SOEC” mode) of water vapor by an elementary electrochemical cell is illustrated in figure 3.
- the elementary electrochemical cell is powered by a current flowing from the cathode to the anode.
- the water vapor distributed by the cathode compartment is then reduced under the effect of the current according to the following half-reaction:
- the oxygen thus formed is evacuated by the draining gas circulating in the anode compartment.
- SOFC fuel cell
- Operation in fuel cell mode allows the production of an electric current.
- the stack comprises a number of elementary electrochemical cells exceeding 25, the latter is liable to exhibit an expansion at high temperature which is difficult to predict, and consequently makes the dimensioning of the rods and clamping plates complicated.
- the object of the invention is therefore to propose a clamping device for clamping an electrochemical stack making it possible to accommodate a large number, for example greater than 25, of elementary electrochemical cells.
- Another object of the invention is to provide a clamping device whose expansion remains limited when it is subjected to high temperatures and in particular temperatures above 700° C.
- the invention also aims to propose an assembly which comprises the clamping device and an electrochemical stack.
- a clamping device for an electrochemical stack said device comprises:
- - two clamping plates called, respectively, upper clamping plate and lower clamping plate, facing each other by one of their faces, called, respectively, upper internal face and lower internal face, and between which is intended to be enclosed in an electrochemical stack;
- - a one-piece spring element having an axis of revolution XX ', and formed by an assembly, at the level of a hub, of two spring washers of generally frustoconical shape, said spring element being arranged to clamp the two clamping plates against the electrochemical stack capable of being clamped between said clamping plates, the spring element integrating a fluidic circuit formed in the volume of one and the other of the two spring washers;
- a holding means intended to maintain the clamping, imposed by the spring element on the clamping plates.
- the two spring washers are assembled so as to extend divergently from the hub.
- the spring element comprises a fluid supply orifice and an evacuation orifice of said fluid cooperating with the fluidic circuit, the supply orifice and the evacuation orifice being provided in the hub.
- each spring washer comprises a plurality of slots which extend radially from a peripheral edge of the spring washer, and pass through the latter right through.
- the spring element comprises a bore in alignment with the axis of revolution XX'.
- the spring element comprises a supply channel connected to the supply orifice and an evacuation channel connected to the evacuation orifice, said supply channel and evacuation being intended to be connected to a circulation system of a heat transfer fluid, advantageously, the supply channel and the evacuation channel are made in one piece with the two spring washers.
- the spring element comprises at least one of the materials chosen from: a nickel-based superalloy, for example Inconel®718.
- the holding means comprises a base plate, the spring element bearing on the one hand against an internal face of the base plate and, on the other hand, against an upper outer face of the upper clamping plate, and opposite to the upper inner face.
- the at least one holding means further comprises at least two tie rods arranged to adjust the distance between the base plate and the lower clamping plate in order to impose a compression on the spring element.
- the at least two tie rods are pivotally mounted, by a first end, on a peripheral contour of the lower clamping plate, while the base plate comprises notches intended to be crossed by the tie rods, each tie rod comprises a thread which extends from a second end, opposite the first end and cooperating with a nut.
- the invention also relates to an electrochemical assembly which comprises:
- an upper end plate and a lower end plate are inserted between the electrochemical stack and, respectively, the upper clamping plate and the lower clamping plate.
- FIG. 1 represents, according to a perspective view, an electrochemical device known from the state of the art (document FR 3 045 215 Al), and on which the present invention is likely to be implemented;
- FIG. 2 is an exploded schematic view of a stack of two basic electrochemical cells known from the state of the art and capable of being implemented within the scope of the present invention;
- FIG. 3 is a schematic view showing the principle of operation of an elementary electrochemical cell in high temperature solid oxide electrolyser (SOEC) mode, the arrows represent the circulation of gases at the level of the electrodes, in particular the arrows in solid lines represent the circulation of reactive gases or reaction products, while the arrow in broken lines represents the circulation of draining gases;
- SOEC solid oxide electrolyser
- FIG. 4 is a schematic representation according to a front view of a clamping device clamping an electrochemical stack according to the present invention
- Figure 5 is a schematic representation in perspective of a spring element capable of being implemented within the scope of the present invention.
- Figure 6 is a schematic representation according to a sectional plane passing through an axis of revolution XX' of a spring element capable of being implemented within the scope of the present invention
- Figure 7 is a schematic representation of the internal space of a spring washer according to a first aspect, this washer in particular shows connecting studs connecting two walls of said spring washer, the arrows materialize the path of a fluid capable of flow into said volume;
- Figure 8 is a schematic representation of the internal space of a spring washer according to a second aspect, the arrows materialize the path of a fluid capable of flowing in said volume;
- FIG. 9 is a graphic representation of the force (E in N on the vertical axis) exerted by a spring element as a function of crushing (D in mm, on the horizontal axis) of an electrochemical stack of 25 elementary cells;
- FIGS. 11a and 11b are schematic representations of two compression phases of an electrochemical stack with the tightening device according to the present invention.
- the present invention relates to a clamping device provided with two clamping plates between which a stack, for example an electrochemical stack, is intended to be clamped.
- the device according to the present invention comprises a spring element, which notably comprises an assembly of two spring washers of generally frustoconical shape.
- the spring element is in particular arranged to transmit a force to the clamping plates, in order to impose crushing on said electrochemical stack.
- the spring element incorporates a fluid circuit formed in the volume of one and the other of the two spring washers.
- This fluidic circuit thus allows the circulation of a fluid in the volume of the spring element so as to limit, or even prevent, the expansion of said spring element when it is subjected to high temperatures, and in particular to temperatures above 700 °C.
- the clamping device is advantageously implemented in an assembly which comprises an electrochemical stack sandwiched between the two clamping plates.
- a clamping device 400 according to the present invention can be seen.
- the clamping device 400 is represented with a stack, and in particular an electrochemical stack 200, clamped between two clamping plates called, respectively, upper clamping plate 410 and lower clamping plate 420.
- clamp is meant a plate of generally flat shape, which comprises two main faces connected by an outline, and which when they are assembled in pairs are intended to maintain the cohesion of a stack, for example of an electrochemical stack.
- Electrochemical stack means a stack of elementary electrochemical cells.
- the upper clamping plate 410 comprises two main faces called, respectively, upper internal face 410a and an upper external face 410b essentially parallel and connected by an upper contour 410c.
- the lower clamping plate 420 comprises two main faces called, respectively, lower internal face 420a and a lower external face 420b essentially parallel and connected by a lower contour 420c.
- the upper clamping plate 410 and the lower clamping plate 420 are in particular arranged so that the upper internal face 410a and the lower internal face 420a face each other.
- the space delimited by the upper internal face 410a and the lower internal face 420a is intended to accommodate the stack, and more particularly the electrochemical stack 200.
- the clamping device 400 also comprises a spring element 500.
- the spring element 500 is in particular arranged to exert a force which leads to the clamping of the electrochemical stack 200 by the upper clamping plate 410 and the lower clamping plate 420 (figure 4).
- the spring element 500 is formed by an assembly of two spring washers 501 and 502 (FIGS. 5 and 6).
- the two spring washers 501 and 502 are assembled at a hub 503 and each have a generally frustoconical shape.
- the two spring washers 501 and 502 are advantageously assembled so as to extend in a divergent manner from the hub 503.
- the hub 503 can advantageously comprise a bore which has a symmetry of revolution around the axis of revolution XX'.
- the spring element 500 is arranged to apply a force on one and/or the other of the upper clamping plate 410 and the lower clamping plate 420 leading to the clamping of the electrochemical stack 200 by said plate 410 and 420.
- the spring element 500 also incorporates a fluidic circuit 510 formed in the volume of one and the other of the two spring washers 501 and 502.
- each spring washer 501 and 502 may comprise two walls interconnected in a sealed manner, and between which the volume intended to form the fluid conduit 510 is provided (FIG. 6).
- these two walls can be interconnected by connecting studs 520 intended to reinforce the mechanical strength of the spring washers 501 and 502 (FIG. 7).
- These connection pads 520 can also be arranged to impose a preferential path on the fluid capable of flowing in the fluid conduit 510.
- each spring washer 501 and 502 comprises a plurality of slots 530 which extend radially from a peripheral edge of the spring washer 500, and cross the latter on either side. in part (figures 5 and 8).
- the implementation of the slots 530 makes it possible to increase the elasticity of the spring element 500.
- the spring element 500 also comprises a fluid supply orifice 541 and an evacuation orifice 542 of said fluid cooperating with the fluidic circuit 510.
- the supply orifice 541 and the evacuation orifice 542 are in particular provided in the hub 503.
- Spring member 500 may also include supply channel 551 connected to supply port 541 and exhaust channel 552 connected to exhaust port 542.
- Supply channel 551 and exhaust channel evacuation 552 are intended in particular to be connected to a circulation system of a heat transfer fluid.
- the supply channel 551 and the evacuation channel 552 are made in one piece with the two spring washers 501 and 502.
- the implementation of the fluidic circuit 510 thus makes it possible to impose the circulation of a fluid, in the fluidic circuit 510 for the purpose of thermalizing the spring element 500 (FIG. 6).
- the circulation of the cooling fluid can in particular be adapted to maintain the spring element 500 in a range of temperatures for which the mechanical properties undergo little, if any, variation.
- the circulation of a cooling fluid in the fluidic circuit 510 makes it possible to limit the variation of the force exerted by the spring element 500 when the latter is close to a heat source.
- an electrochemical stack 200 with solid oxides of the SOEC/SOFC type is known to operate at high temperature, and in particular at temperatures above 700° C., and can, consequently, generate heating, by radiation or by conduction, of the spring element 500.
- the spring element 500 can advantageously comprise at least one of the alloys chosen from: 310s, Inconel 718, Inconel 625.
- Inconel 718 exhibits corrosion resistance and mechanical properties over a wide temperature range that make it the alloy of choice when the applications under consideration involve temperatures up to 700°C.
- the spring element 500 can be formed by an additive manufacturing technique, and in particular by 3D manufacturing.
- the dimensioning of the spring element 500 can be carried out so that the latter has a given stiffness.
- the spring element can be sized so as to be able to apply a sufficient force to seal the electrochemical stack sandwiched between the two clamping plates 410 and 420.
- FIG. 9 is a graphical representation of a crushing D of an electrochemical stack formed of 25 elementary electrochemical cells as a function of the force exerted by the spring element 500.
- the clamping device 400 also comprises a holding means 600 intended to maintain the clamping imposed by the spring element 500 on the clamping plates (FIG. 4).
- the holding means 600 comprises at least two tie rods 610a and 610b, as well as a base plate 620.
- the base plate 620 is provided with two main faces called, respectively, internal face 620a and external face 620b and connected by a outline 620c. More particularly, the base plate 620 is facing the upper outer face 410b by its inner face 620a, and the spring element 500 is located between the base plate 620 and the upper clamping plate 410, resting, respectively, against the internal face 620a and the upper external face 410b.
- the at least two tie rods 610a and 610b extend between the lower clamping plate and the base plate to allow said plates to be assembled and to adjust the distance which separates them. More particularly, this adjustment of the distance between the lower clamping plate and the base plate is intended to put the spring element 500 under compression so that the latter exerts a force which results in the clamping of the electrochemical stack between the clamping plates 410 and 420.
- the at least two tie rods 610a and 610b can, according to a first aspect, pass through through openings made in the base plate 620 and the upper clamping plate 410, and cooperate with clamping means, for example nuts, at the level of the openings through.
- the at least two tie rods 610a and 610b can advantageously be pivotally mounted, via a first end, on the contour 420c of the lower clamping plate 420 (FIG. 4).
- the base plate 620 comprises notches 612a and 612b intended to be crossed by the tie rods 610a and 610b.
- clamping means for example nuts, cooperate with the at least two tie rods at the notches 612a and 612b.
- the base plate 620, the upper clamping plate 410 and the spring element 500 can form a single piece. This one-piece part can be obtained by an additive manufacturing process, and in particular by 3D manufacturing (FIG. 10).
- a fluid and in particular a cooling fluid, can circulate in the fluidic channel 510 of the spring element 500.
- the cooling fluid for example water
- This water vapor can advantageously be injected into the electrochemical stack 200.
- the base plate comprises an orifice, called mounting orifice 630, in alignment with the axis of revolution XX' of the spring element 500.
- This mounting orifice is in particular implemented for crushing of the electrochemical stack 200.
- Figures 11a and 11b are illustrations of the assembly of an electrochemical stack 200 and the clamping device.
- This assembly comprises, initially, a phase of compression of the electrochemical stack 200 placed between the two clamping plates 410 and 420. Apply a force, for example 2000 N, against the upper outer face 410b so as to crush the electrochemical stack 200 (FIG. 11a).
- This compression phase may involve thermal cycles.
- the compression may initially take place at room temperature or at a temperature below 200°C.
- the assembly thus compressed can be heated, for example to a temperature above 700° C., then cooled to its initial temperature while maintaining the force exerted by the jack.
- the assembly also includes a second phase during which the tie rods 610a and 610b are positioned in the notches 512a and 512b so as to assemble the lower clamping plate 420 with the base plate 620.
- This second phase also includes the positioning of nuts 611a and 611b cooperating with the tie rods 610a and 610b at the level of the upper external face 610b so that the spring element 500 applies the force initially exerted by the cylinder.
- the clamping device 400 according to the present invention thus makes it possible to exert a constant force on the electrochemical stack independently of the temperature of said stack.
- This device also makes it possible to envisage the stacking of a relatively large number, in particular greater than 25 or even greater than 50, of elementary electrochemical cells.
- the cooling liquid circulating in the fluid circulation channel may comprise water.
- the latter released in the form of water vapor at the level of the second end of the spring, can advantageously not be upgraded, and in particular be injected into the electrochemical stack as a reagent. This aspect contributes to improving the energy efficiency of the electrochemical stack.
- the invention also relates to an electrochemical assembly which comprises:
- the assembly can also comprise an upper end plate and a lower end plate which are inserted between the electrochemical stack 200 and, respectively, the upper clamping plate 410 and the lower clamping plate 420.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Sustainable Energy (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Fuel Cell (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2011713A FR3116389B1 (fr) | 2020-11-16 | 2020-11-16 | Dispositif de serrage pour un empilement electrochimique, et assemblage forme par le dispositif de serrage et l’empilement electrochimique |
| PCT/FR2021/051961 WO2022101569A1 (fr) | 2020-11-16 | 2021-11-05 | Dispositif de serrage pour un empilement electrochimique, et assemblage forme par le dispositif de serrage et l'empilement electrochimique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4244920A1 true EP4244920A1 (fr) | 2023-09-20 |
Family
ID=74045911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21815572.9A Withdrawn EP4244920A1 (fr) | 2020-11-16 | 2021-11-05 | Dispositif de serrage pour un empilement electrochimique, et assemblage forme par le dispositif de serrage et l'empilement electrochimique |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4244920A1 (fr) |
| FR (1) | FR3116389B1 (fr) |
| WO (1) | WO2022101569A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115149064B (zh) * | 2022-09-05 | 2022-11-29 | 广东佛燃科技有限公司 | 一种高温固体氧化物燃料电池电堆用夹具 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5851689A (en) * | 1997-01-23 | 1998-12-22 | Bechtel Corporation | Method for operating a fuel cell assembly |
| US6057053A (en) * | 1997-11-25 | 2000-05-02 | Ballard Power Systems Inc. | Compression assembly for an electrochemical fuel cell stack |
| JP2006185722A (ja) * | 2004-12-27 | 2006-07-13 | Nissan Motor Co Ltd | 燃料電池 |
| FR3045215B1 (fr) | 2015-12-15 | 2023-03-03 | Commissariat Energie Atomique | Systeme de serrage autonome d'un empilement a oxydes solides de type soec/sofc a haute temperature |
| JP2020149787A (ja) * | 2019-03-11 | 2020-09-17 | トヨタ自動車株式会社 | 燃料電池モジュール |
-
2020
- 2020-11-16 FR FR2011713A patent/FR3116389B1/fr active Active
-
2021
- 2021-11-05 EP EP21815572.9A patent/EP4244920A1/fr not_active Withdrawn
- 2021-11-05 WO PCT/FR2021/051961 patent/WO2022101569A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022101569A1 (fr) | 2022-05-19 |
| FR3116389B1 (fr) | 2022-10-07 |
| FR3116389A1 (fr) | 2022-05-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3391451B1 (fr) | Système de serrage autonome d'un empilement à oxydes solides de type soec/sofc à haute température | |
| EP3012892B1 (fr) | Dispositif électrochimique à empilement | |
| EP2771934B1 (fr) | Systeme electrochimique type electrolyseur ou pile a combustible haute temperature a gestion thermique amelioree | |
| EP3625846B1 (fr) | Réacteur d'électrolyse ou de co-électrolyse de l'eau (soec) ou pile a combustible (sofc) à fonctionnement sous pression comprenant un système de serrage adapté à un tel fonctionnement | |
| EP3476977B1 (fr) | Motif élémentaire réversible d'électrolyse ou de co-électrolyse de l'eau (soec) ou de pile à combustible (sofc) à fonctionnement sous pression et effort de compression découplé | |
| EP1807895B1 (fr) | Module de pile a combustible a interconnecteurs flexibles | |
| EP2491279A1 (fr) | Joint d'etancheite entre deux elements a coefficients de dilatation thermique differents | |
| EP4244920A1 (fr) | Dispositif de serrage pour un empilement electrochimique, et assemblage forme par le dispositif de serrage et l'empilement electrochimique | |
| WO2022101568A1 (fr) | Element ressort, dispositif de serrage pour un empilement electrochimique, et assemblage forme par le dispositif de serrage et l'empilement electrochimique | |
| EP2681791B1 (fr) | Pile à combustible à chambre anodique comportant dans la chambre anodique une surface de condensation et d'évacuation d'eau, et procédé de condensation et d'évacuation d'eau formée dans ladite chambre | |
| WO2003100896A2 (fr) | Cellule elementaire pour pile a combustible a structure helicoïdale, procede de fabrication et pile a combustible comprenant une pluralite de cellules elementaires | |
| EP4630605A1 (fr) | Conducteur électrique monobloc | |
| EP1938409B1 (fr) | Module tubulaire de pile a combustible et son dispositif pour joint d'etancheite | |
| EP4244922A1 (fr) | Dispositif de serrage pour un empilement electrochimique, et assemblage forme par le dispositif de serrage et l'empilement electrochimique | |
| FR3087953A1 (fr) | Dispositif electrochimique comprenant un ensemble electrochimique dispose dans une enceinte de confinement | |
| EP3881383B1 (fr) | Dispositif electrochimique a oxydes solides pourvu d'un moyen de surchauffe integre compact | |
| WO2020128322A1 (fr) | Plaque bipolaire pour pile a combustible | |
| FR3109473A1 (fr) | Plaque bipolaire de pile à combustible à circuit de fluide caloporteur perfectionné | |
| WO2023001477A1 (fr) | Plaque de pile à combustible | |
| WO2023222982A1 (fr) | Conducteur électrique rigide comportant des éléments raccordés entre eux par soudage tig, procédé de fabrication et utilisation d'un tel conducteur électrique | |
| FR3128063A1 (fr) | Dispositif d’isolation configuré pour être monté dans une cheminée de circulation de fluide d’une pile à combustible et procédé d’isolation | |
| FR3161317A1 (fr) | Connecteur fluidique pour système électrochimique | |
| FR3112656A1 (fr) | Dispositif electrochimique | |
| FR3091044A1 (fr) | Plaque bipolaire pour pile a combustible |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20230418 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
| RIC1 | Information provided on ipc code assigned before grant |
Ipc: C25B 9/67 20210101ALI20240829BHEP Ipc: C25B 9/75 20210101ALI20240829BHEP Ipc: C25B 1/042 20210101ALI20240829BHEP Ipc: H01M 8/124 20160101ALI20240829BHEP Ipc: F16F 1/02 20060101ALI20240829BHEP Ipc: F16F 1/32 20060101ALI20240829BHEP Ipc: C25B 9/77 20210101ALI20240829BHEP Ipc: H01M 8/248 20160101ALI20240829BHEP Ipc: H01M 8/04007 20160101AFI20240829BHEP |
|
| INTG | Intention to grant announced |
Effective date: 20240920 |
|
| RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIESALTERNATIVES |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20250121 |