CN115528263A - Rectangular polar plate for high-power electrolytic cell - Google Patents
Rectangular polar plate for high-power electrolytic cell Download PDFInfo
- Publication number
- CN115528263A CN115528263A CN202211274056.7A CN202211274056A CN115528263A CN 115528263 A CN115528263 A CN 115528263A CN 202211274056 A CN202211274056 A CN 202211274056A CN 115528263 A CN115528263 A CN 115528263A
- Authority
- CN
- China
- Prior art keywords
- anode
- cathode
- rectangular
- outflow
- 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.)
- Pending
Links
- 239000012429 reaction media Substances 0.000 claims abstract description 36
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 9
- 238000009826 distribution Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000010079 rubber tapping Methods 0.000 claims 2
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 25
- 238000004519 manufacturing process Methods 0.000 abstract description 15
- 239000000463 material Substances 0.000 abstract description 13
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 6
- 239000001257 hydrogen Substances 0.000 abstract description 6
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000009827 uniform distribution Methods 0.000 abstract description 4
- 238000004146 energy storage Methods 0.000 abstract description 2
- 210000004027 cell Anatomy 0.000 description 20
- 238000000034 method Methods 0.000 description 8
- 230000005611 electricity Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000005056 cell body Anatomy 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000000693 micelle Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
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
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
-
- 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
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0247—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the form
- H01M8/0256—Vias, i.e. connectors passing through the separator material
-
- 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
- H01M8/02—Details
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
- H01M8/0273—Sealing or supporting means around electrodes, matrices or membranes with sealing or supporting means in the form of a frame
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/133—Renewable energy sources, e.g. sunlight
Landscapes
- 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)
- Fuel Cell (AREA)
Abstract
The invention relates to the technical field of hydrogen production and energy storage by water electrolysis, in particular to a rectangular polar plate for a high-power electrolytic cell. The electrode plate is rectangular, the body consists of a frame and a main electrode plate, the main electrode plate is accommodated in the frame to form an integral body, and the positive and negative surfaces of the main electrode plate are respectively a cathode active area and an anode active area; the cathode side of the rectangular polar plate is provided with a single-port inlet-single-port outlet passage which forms a cathode flow path with the cathode active region; on the anode side of the rectangular polar plate, a 'double-inlet-double-outlet' passage is arranged, and an anode flow path is formed by the passage and the anode active region. The invention can reduce the material loss in the manufacturing process of the electrode and the diaphragm of the electrolytic cell; the reaction media of the cathode and the anode have better uniform distribution consistency, the generated gas is collected quickly, and the drainage effect is good; the active area of the main polar plate has strong mass transfer and exhaust capacity and strong heat exchange capacity, and can effectively improve the performance of the electrolytic cell.
Description
Technical Field
The invention relates to the technical field of hydrogen production and energy storage by water electrolysis, in particular to a rectangular polar plate for a high-power electrolytic cell.
Background
Renewable energy has the characteristics of volatility and intermittence, is usually difficult to match with local consumption capacity, and is forced to 'abandon water, abandon wind and abandon light', so that the waste of the renewable energy is caused. The redundant 'green electricity' electrolyzed water is utilized to produce hydrogen and store energy in the valley electricity period, and a fuel cell or a hydrogen gas turbine is utilized to generate electricity and return to the power grid in the peak electricity period, so that the problems of renewable energy consumption and power grid stability can be effectively solved.
At present, alkaline Water Electrolysis (AWE) is one of the electrolytic hydrogen production methods for producing green hydrogen, and is also the electrolytic hydrogen production technology which has the longest industrialized development time and the most mature technology at the present stage. The polar plate is used as one of the main core components of the electrolytic cell, and the main functions of the polar plate comprise structural support, two-stage separation, flow guiding, electric conduction, heat transfer and the like. Currently, a large commercial alkaline water electrolytic cell usually adopts a cylindrical cell body design and a circular polar plate, so that the electrode and the diaphragm are manufactured by cutting circles, and the material consumption is more than or equal to 21.5 percent. Along with the diameter of the cylindrical electrolytic cell is larger and larger, the gas production rate of the single polar plate of the electrolytic cell is larger and larger, and a gas collecting area is easily formed at the top end of the circular polar plate, so that the electrolyte is difficult to fully contact with the diaphragm, and the electrolytic efficiency is reduced.
In addition, the cathode and the anode have different electrochemical physical phenomena, for example, the gas production of the cathode is twice that of the anode in terms of gas production, and as the power level of the electric electrolysis device is increased, the circular structural design adopted by the electrode plate of the electrolysis bath generally has the defects of reducing material consumption, uniformly distributing media and rapidly exhausting gas, so that the electrode plate structure needs to be optimally designed.
Disclosure of Invention
In view of the above shortcomings and drawbacks of the prior art, the present invention provides a rectangular plate for a high power electrolyzer.
In order to achieve the purpose, the invention adopts the following technical scheme:
a rectangular pole plate for a high-power electrolytic cell is characterized in that the pole plate is rectangular, a pole plate body is composed of a pole frame (7) and a main pole plate (8), the main pole plate (8) is accommodated in the pole frame (7) to form an integral body, and a cathode active area (14) and an anode active area (23) are respectively arranged on the front side and the back side of the main pole plate (8); on the cathode side of the rectangular polar plate, the upper and lower sides of the polar frame (7) are respectively provided with a single-port inlet-single-port outlet passage, and the passages and the cathode active region (14) form a cathode flow path; on the anode side of the rectangular polar plate, the upper and lower sides of the polar frame (7) are respectively distributed with a double-inlet-double-outlet passage, and the passage and the anode active region (14) form an anode flow path.
Positioning holes (41, 42, 43, 44) are respectively arranged at four corners of the pole frame (7).
Cathode inflow and outflow passages are respectively arranged on the upper side and the lower side of a cathode active area (14) in the pole frame (7), and form a cathode flow path with the cathode active area (14) between the cathode inflow passage and the cathode active area, wherein the cathode inflow passage is provided with an inflow manifold port (11), at least one inflow manifold (12-1, 12-2, 12-3, 12-4) and at least one cathode shunt area (13-1, 13-2, 13-3, 13-4); the cathode outflow path is provided with at least one cathode confluence region (15-1, 15-2, 15-3, 15-4), at least one outflow manifold (16-1, 16-2, 16-3, 16-4) and a cathode outflow manifold port (17).
The inflow manifold port (11) is communicated with inflow manifolds (12-1, 12-2, 12-3, 12-4), the reaction medium enters the inflow manifolds from the inflow manifold port, then flows through the cathode splitting area (13-1, 13-2, 13-3, 13-4) for splitting, and then flows to the cathode active area (14) for electrolytic reaction through impressed current; the reaction medium and the generated gas are collected in the confluence area and flow through the outflow manifolds (16-1, 16-2, 16-3 and 16-4) and the outflow manifold ports (17) communicated with the outflow manifolds, so that the medium circulation flow of the cathode flow path realizes the form of single inlet and single outlet.
The cathode shunting areas (13-1, 13-2, 13-3, 13-4) are cup-shaped openings, are connected with the inflow manifolds (12-1, 12-2, 12-3, 12-4) and the cathode active areas (14), and are internally provided with flow guide ridges (5) and rectangular concave platforms (6) to play a role in uniformly shunting reaction media and supporting structures; wherein each branch region is communicated by a separate inflow manifold (12-1, 12-2, 12-3, 12-4), and each branch region is relatively independent; the cathode confluence region (15-1, 15-2, 15-3, 15-4) is in a cup-shaped opening shape, is connected with the cathode active region (14) and the outflow manifolds (16-1, 16-2, 16-3, 16-4), and is internally provided with a flow guide ridge (5) and a rectangular concave platform (6) to play roles of uniformly conducting reaction media, generating gas and structurally supporting; wherein each confluence region is communicated by a separate outflow manifold (16-1, 16-2, 16-3, 16-4), and each confluence region is relatively independent.
The shunting area and the converging area are in cup-shaped mouths, so that the uniform distribution of a reaction medium and the collection of a gas-liquid two-phase mixture are facilitated.
The cathode active region (14) of the main polar plate (8) is internally provided with an array of bosses (3), and reticular crossed grooves between the bosses are used for flowing of reaction medium and generated gas in the cathode active region (14).
An anode inflow passage and an anode outflow passage are respectively arranged at the upper side and the lower side of an anode active area (23) in the pole frame (7), the anode inflow passage and the anode active area (23) between the two passages form an anode flow path, and the anode inflow passage is provided with anode inflow branch openings (21-1 and 21-2) and anode shunt areas (22-1 and 22-2); the anode outflow passage is provided with anode confluence regions (24-1, 24-2) and anode outflow manifolds (25-1, 25-2).
The inflow branch ports (21-1, 21-2) are directly communicated with the anode shunt areas (22-1, 22-2), main flow of reaction media directly enters the shunt areas through the inflow branch ports to be distributed, enters the anode active area (23) to carry out electrolytic reaction under the action of impressed current, the reaction media and generated gas are converged (24-1, 24-2) in the anode confluence area and then are discharged out of the electrolytic tank through the outflow branch ports, so that the medium of the anode flow path circularly flows to realize a double-port inlet-double-port outlet form.
The anode shunt area (22-1, 22-2) of the polar plate is in a horn mouth shape, is connected with the inflow branch ports (21-1, 21-2) and the anode active area (23), and is internally provided with a flow guide ridge (5) and a linear arrangement rectangular concave platform (6), wherein the flow guide ridge can evenly shunt reaction media and structural support; wherein each branch region is communicated by a separate inflow branch port (21-1, 21-2); the anode confluence regions (24-1, 24-2) of the main polar plate are in a horn mouth shape, are connected with the anode active region (23) and the outflow manifold ports (25-1, 25-2), and are internally provided with a flow guide ridge (5) and a linearly arranged rectangular concave platform (6), wherein the flow guide ridge can uniformly conduct reaction media and generated gas; wherein, each confluence area is led out separately and outflow manifold ports (25-1, 25-2) are relatively independent.
The shunting area and the converging area are in horn mouths, so that the space of a polar plate is saved, and the effective area ratio is improved.
Preferably, the openings of the inlet manifold and the outlet manifold of the anode flow passage are located in the annular blank area of the inlet flow distribution manifold, so as to facilitate the compact arrangement of the flow passages.
The anode active area (23) of the main pole plate is internally provided with an array of bosses (3), and the reticular crossed grooves between the bosses are used for the flow of reaction medium and generated gas in the anode active area.
The current-conducting, electric-conducting and heat-transferring characteristics of the polar plate can be optimized by changing the geometrical characteristics of the lug bosses and the arrangement mode of the array in the active areas of the cathode and the anode.
Meanwhile, a reticular cross groove is formed between the bosses and is a flow channel for reaction medium and generated gas, and the width of the groove can be adjusted by changing the line spacing and the row spacing values; the depth of the flow path can be adjusted by changing the height value of the boss; the values of the line spacing and the column spacing of the lug bosses are set according to the mechanical and electrical characteristics of the pole plates and the requirement of gas production rate.
The cathode active region (14) and the anode active region (23) are internally provided with a cross-shaped boss array (3), and the array arrangement form is a fork row or a sequential row; wherein, the shape of the boss can also be round, oval or diamond;
when the boss is a cross-shaped boss, the boss is provided with four edges A, B, C and D, the cross section is in a cross shape, the edges of the top surface of the boss and the joints of the side surfaces of the boss and the groove plane (33) are respectively provided with a fillet; the longitudinal half length a and the transverse half length b of the boss, the height value h of the boss, the ratio a/b of the longitudinal half length a and the transverse half length b of the boss is 0.1-10, and h is 1-30mm.
When the bipolar plate base material is made of metal, the material includes but is not limited to any one of stainless steel, titanium alloy, aluminum alloy, graphite and composite graphite resin material. The material can be manufactured by adopting stamping, rolling and etching forming processes.
When the rectangular polar plate base material is made of metal, the polar frame and the main polar plate can be processed and formed by an integrated machine, and can also be processed and formed by a split welding and forming process with lower cost (the polar frame is manufactured by a machining method, and the main polar plate is manufactured by a stamping method).
The rectangular polar plate is suitable for any one of an alkaline electrolytic cell, a proton exchange membrane electrolytic cell and a solid oxide electrolytic cell.
As described above, the present invention has the following advantageous effects:
1. the polar plate adopts a rectangular structure, so that the problems of large gas production and low electrolysis efficiency of the conventional high-power electrolytic cell are solved, and the arrangement mode of each functional region position of a rectangular polar plate flow field is unique, wherein a cathode flow distribution region and a confluence region are independently arranged in parallel, and simultaneously, independent outflow manifolds are conducted, so that the medium distribution is uniform, the gas production is rapidly collected, and the drainage effect is good; the anode shunting area and the current converging area are independently arranged in parallel, and meanwhile, the independent outflow manifold ports are communicated, so that the space of a polar plate is saved, and the effective area ratio is improved.
2. The 'reticular cross groove flow path' constructed by the boss array on the main polar plate of the rectangular polar plate has strong transient disturbance characteristics, is beneficial to the rapid falling of bubble micelles generated on the surface of the diaphragm, and has high electrolysis efficiency.
3. The polar plate has simple structure and characteristics, does not need to be manufactured into a circle in the manufacturing process of the electrode, the diaphragm and the main polar plate, and has small material loss and low material cost.
4. The polar plate has more excellent flow guiding, electric conduction, mass transfer, heat transfer and air guide effects, is easy to machine and form, and has low manufacturing cost.
Drawings
FIG. 1 is a schematic view of a rectangular plate (cathode side) for a high power electrolytic cell according to the present invention;
FIG. 2 is a schematic view of a rectangular plate (anode side) for a high power electrolytic cell according to the present invention;
FIG. 3 is a schematic view of a cathode flow path according to the present invention;
FIG. 4 is a schematic view of the anode flow path of the present invention;
fig. 5 is a schematic diagram of the mesa configuration of the active region in the rectangular plate of the present invention;
FIG. 6 is a schematic view of the rectangular pole plate split welding forming of the present invention;
in the figure, 11, an inflow branch port; 12-1, 12-2, 12-3, 12-4, an inflow manifold; 13-1, 13-2, 13-3, 13-4, a cathode shunt region; 14, a cathode active region; 15-1, 15-2, 15-3, 15-4, cathode convergence region; 16-1, 16-2, 16-3, 16-4, an outlet manifold; 17, a cathode outflow manifold; 21-1, 21-2, anode inflow manifold port; 22-1, 22-2, an anode shunting region; 23, an anode active region; 24-1, 24-2, an anode confluence region; 25-1, 25-2, an anode outlet manifold; 3, a cross-shaped boss; 31, a boss top surface; 32, the side surface of the boss; 33, groove plane; 34, round corners; 41. 42, 43, 44, locating holes; 5, flow guiding ridges; 6, a rectangular boss, 7, a pole frame; 8, a main polar plate; 9, welding seams.
Detailed Description
The embodiments of the present invention will be further described with reference to the accompanying drawings and examples, it being understood that the embodiments described herein are merely for purposes of illustration and explanation and are not intended to limit the invention.
The invention can reduce the material loss in the manufacturing process of the electrodes and the diaphragms of the electrolytic cell; the reaction media of the cathode and the anode have better uniform distribution consistency, the generated gas is collected quickly, and the drainage effect is good; the active area of the main polar plate has strong mass transfer and exhaust capacity and strong heat exchange capacity, and can effectively improve the performance of the electrolytic cell.
When the base material of the polar plate in each of the following embodiments is made of metal, the base material may be made of stainless steel, titanium alloy, aluminum alloy, etc., and may be integrally formed by machining, or the polar frame may be machined, and the main polar plate may be manufactured by etching or may be formed by a polar frame machine, and the main polar plate may be manufactured by stamping and finally welded into a whole.
The geometric characteristics of the boss of the active area of the mainboard can adopt a cross shape and can be replaced by a circle, an ellipse, a rhombus and the like.
Examples
As shown in figures 1 and 2, the rectangular pole plate for the high-power electrolytic cell provided by the invention is rectangular, the pole plate body is composed of a pole frame (7) and a main pole plate (8), the main pole plate (8) is accommodated in the pole frame (7) to form an integral body, and the positive and negative surfaces of the main pole plate (8) are respectively provided with a cathode active area (14) and an anode active area (23); on the cathode side of the rectangular polar plate, the upper and lower sides of the polar frame (7) are respectively provided with a single-port inlet-single-port outlet passage, and the passages and the cathode active region (14) form a cathode flow path; on the anode side of the rectangular polar plate, the upper and lower sides of the polar frame (7) are respectively provided with a double-inlet-double-outlet passage, and the passage and the anode active region (14) form an anode flow path.
Positioning holes (41, 42, 43, 44) are respectively arranged at four corners of the pole frame (7).
Cathode inflow and outflow passages are respectively arranged on the upper side and the lower side of a cathode active area (14) in the pole frame (7), and form a cathode flow path with the cathode active area (14) between the cathode inflow passage and the cathode active area, wherein the cathode inflow passage is provided with an inflow manifold port (11), at least one inflow manifold (12-1, 12-2, 12-3, 12-4) and at least one cathode shunt area (13-1, 13-2, 13-3, 13-4); the cathode outflow path is provided with at least one cathode manifold (15-1, 15-2, 15-3, 15-4), at least one outflow manifold (16-1, 16-2, 16-3, 16-4) and a cathode outflow manifold port (17).
An anode inflow passage and an anode outflow passage are respectively arranged at the upper side and the lower side of an anode active area (23) in the pole frame (7), the anode inflow passage and the anode active area (23) between the two passages form an anode flow path, and the anode inflow passage is provided with anode inflow branch openings (21-1 and 21-2) and anode shunt areas (22-1 and 22-2); the anode outflow passage is provided with anode confluence regions (24-1, 24-2) and anode outflow manifolds (25-1, 25-2).
As shown in fig. 3, the cathode shunt area (13-1, 13-2, 13-3, 13-4) is in the shape of a cup-shaped opening, is connected with the inlet manifold (12-1, 12-2, 12-3, 12-4) and the cathode active area (14), and is internally provided with a flow guide ridge (5) and a rectangular concave platform (6) to play the roles of uniformly shunting the reaction medium and supporting the structure; wherein each branch region is communicated by a separate inflow manifold (12-1, 12-2, 12-3, 12-4), and each branch region is relatively independent; the cathode confluence regions (15-1, 15-2, 15-3, 15-4) are cup-shaped openings, are connected with the cathode active regions (14) and the outflow manifolds (16-1, 16-2, 16-3, 16-4), are internally provided with flow guide ridges (5) and rectangular concave platforms (6), and play roles in uniformly conducting reaction media, generating gas and structurally supporting; wherein each confluence area is communicated by a separate outflow manifold (16-1, 16-2, 16-3, 16-4), and each confluence area is relatively independent.
The shunting area and the converging area are in cup-shaped mouths, so that the uniform distribution of a reaction medium and the collection of a gas-liquid two-phase mixture are facilitated.
As shown in fig. 4, the anode shunt area (22-1, 22-2) of the plate is in the shape of a 'bell mouth', is connected with the inlet manifold (21-1, 21-2) and the anode active area (23), and is internally provided with a flow guide ridge (5) capable of uniformly shunting reaction medium and structural support and a linearly arranged rectangular concave platform (6); wherein each branch region is communicated by a separate inflow branch port (21-1, 21-2); the anode confluence regions (24-1, 24-2) of the main polar plate are in a horn mouth shape, are connected with the anode active region (23) and the outflow manifold ports (25-1, 25-2), and are internally provided with a flow guide ridge (5) and a linearly arranged rectangular concave platform (6), wherein the flow guide ridge can uniformly conduct reaction media and generated gas; wherein, each confluence area is led out separately to form outflow manifold ports (25-1, 25-2), and the confluence areas are relatively independent.
The shunting area and the converging area are in horn mouths, so that the space of a polar plate is saved, and the effective area ratio is improved.
Preferably, the open holes of the inlet manifold and the outlet manifold of the anode flow path are located in the annular blank area of the inlet flow distribution manifold, which is favorable for compact arrangement of the flow path.
The cathode active region (14) of the main polar plate (8) is internally provided with a cross-shaped boss (3) array, and reticular crossed grooves between the bosses are used for the reaction medium and the generated gas of the cathode active region (14) to flow.
The anode active region (23) of the main pole plate is internally provided with a cross-shaped boss (3) array, and reticular crossed grooves between the bosses are used for flowing of reaction media and generated gas in the anode active region.
The current-conducting, electric-conducting and heat-transferring characteristics of the plate can be optimized by changing the geometrical characteristics of the lug bosses and the arrangement mode of the array in the active areas of the cathode and the anode.
Meanwhile, a reticular cross groove is formed between the bosses and is a flow channel for reaction medium and generated gas, and the width of the groove can be adjusted by changing the row spacing and the column spacing values of the boss array; the depth of the flow path can be adjusted by changing the height value of the boss; the values of the line spacing and the column spacing of the lug bosses are set according to the mechanical and electrical characteristics of the pole plates and the requirement of gas production rate.
The cathode active region (14) and the anode active region (23) are internally provided with a cross-shaped boss array (3), the array arrangement form is that the geometrical characteristics of bosses in the active regions and the arrangement distance of the array are adjusted according to the working condition characteristics and the structural mechanics requirement of the electrolytic cell in a staggered or sequential arrangement mode, and the staggered arrangement mode is adopted in the embodiment.
When the boss is a cross-shaped boss, the boss is provided with four edges A, B, C and D, the section shape is cross-shaped, the edge of the top surface of the boss and the joint of the side surface of the boss and the plane (33) of the groove are respectively provided with a fillet; the longitudinal half length a and the transverse half length b of the boss, the height value h of the boss, the ratio a/b of the longitudinal half length a to the transverse half length b of the boss are 0.1-10, h is 1-30mm, the ratio a/b is 1.78 in the embodiment and h is 5mm.
As shown in fig. 6: the rectangular polar plate is welded and formed in a split mode. The polar plate is manufactured by adopting a low-cost split welding forming process, the polar frame (7) is manufactured by adopting a machining method, the main polar plate (8) is manufactured by adopting a stamping method, and finally the polar plate and the main polar plate are welded into a whole.
The flow of the passage for obtaining the rectangular polar plate by the method is that,
the inlet manifold port is communicated with the inlet manifold, the reaction medium enters the inlet manifold from the inlet manifold port, flows through the cathode shunt area, and then flows to the cathode active region to carry out electrolytic reaction by impressed current; reaction medium and generated gas sequentially flow through the confluence area and the confluence manifold and then are discharged out of the electrolytic cell through the cathode outflow manifold port, so that the medium of the cathode flow path circularly flows to realize a form of single-port inlet-single-port outlet.
On the anode side, the inflow manifold port is directly communicated with the anode shunt region, the main flow of the reaction medium directly enters the shunt region through the inflow manifold port to be distributed, enters the active region, and generates an electrolytic reaction under the action of an applied current, the reaction medium and the generated gas are converged in the confluence region, and then flow through the anode outflow manifold port to be discharged out of the electrolytic cell, so that the medium of the anode flow path circularly flows to realize a form of 'double-port inlet-double-port outlet'.
Claims (10)
1. A rectangular polar plate for a high-power electrolytic cell is characterized in that the polar plate is rectangular, a polar plate body is composed of a polar frame (7) and a main polar plate (8), the main polar plate (8) is accommodated in the polar frame (7) to form an integral body, and a cathode active area (14) and an anode active area (23) are respectively arranged on the front surface and the back surface of the main polar plate (8); the cathode side of the rectangular polar plate, the upper and lower both sides of the polar frame (7) distribute the route of "single port enters-single port to go out" separately, form the cathode flow path with the cathode active region (14); on the anode side of the rectangular polar plate, the upper and lower sides of the polar frame (7) are respectively provided with a double-inlet-double-outlet passage, and the passage and the anode active region (14) form an anode flow path.
2. Rectangular plate for high power electrolyzers according to claim 1, wherein the cathode inflow and outflow paths are arranged in the frame (7) on the upper and lower sides of the cathode active area (14), respectively, and form a cathode flow path with the cathode active area (14) between the two paths, the cathode inflow path being provided with an inflow manifold port (11), at least one inflow manifold (12-1, 12-2, 12-3, 12-4) and at least one cathode shunt area (13-1, 13-2, 13-3, 13-4); the cathode outflow path is provided with at least one cathode confluence region (15-1, 15-2, 15-3, 15-4), at least one outflow manifold (16-1, 16-2, 16-3, 16-4) and a cathode outflow manifold port (17).
3. The rectangular plate for a high power electrolyzer of claim 2 wherein the inlet manifold port (11) communicates with the inlet manifold (12-1, 12-2, 12-3, 12-4) from which the reaction medium is introduced into the inlet manifold, and the reaction medium is split by the cathode splitting region (13-1, 13-2, 13-3, 13-4) and then flows to the cathode active region (14) for electrolysis under the action of an external power supply; the reaction medium and the generated gas are collected in the cathode confluence area (15-1, 15-2, 15-3, 15-4) and flow through the outflow manifold (16-1, 16-2, 16-3, 16-4) and the outflow manifold port (17) communicated with the outflow manifold port, so that the medium circulation flow of the cathode flow path realizes the form of single inlet and single outlet.
4. Rectangular plate for high power electrolysers, as claimed in claim 2 or 3, characterized by the fact that said cathodic distribution areas (13-1, 13-2, 13-3, 13-4), shaped as "cups", connect the inlet manifolds (12-1, 12-2, 12-3, 12-4) to the cathodic active area (14) and arrange the flow-guiding ridges (5) and the rectangular concave platforms (6) inside the "cups", serving to distribute the reaction medium uniformly and to support the structure; wherein each branch region is communicated by a separate inflow manifold (12-1, 12-2, 12-3, 12-4), and each branch region is relatively independent; the cathode confluence regions (15-1, 15-2, 15-3, 15-4) are cup-shaped openings, are connected with the cathode active regions (14) and the outflow manifolds (16-1, 16-2, 16-3, 16-4), are internally provided with flow guide ridges (5) and rectangular concave platforms (6), and play roles in uniformly conducting reaction media, generating gas and structurally supporting; wherein each confluence area is communicated by a separate outflow manifold (16-1, 16-2, 16-3, 16-4), and each confluence area is relatively independent.
5. The rectangular plate for a high power electrolyzer of claim 2 characterized in that: the cathode active area (14) of the main pole plate (8) is internally provided with an array of bosses (3), and reticular crossed grooves between the bosses are used for the flow of reaction medium and generated gas in the cathode active area (14).
6. The rectangular plate for high power electrolyzers according to claim 1, wherein the anode inflow and outflow paths are respectively arranged on the upper and lower sides of the anode active area (23) in the frame (7) and form an anode flow path with the anode active area (23) between the anode inflow and outflow paths, and the anode inflow path is provided with anode inflow manifold ports (21-1, 21-2) and anode shunt areas (22-1, 22-2); the anode outflow passage is provided with anode confluence regions (24-1, 24-2) and anode outflow manifolds (25-1, 25-2).
7. The rectangular plate for high power electrolyzers according to claim 6, wherein said inlet manifolds (21-1, 21-2) are directly connected to the anode tap-off areas (22-1, 22-2), the main flow of the reaction medium is directly introduced into the tap-off areas through the inlet manifolds for distribution, introduced into the anode active area (23), subjected to the action of the external power supply for electrolytic reaction, joined (24-1, 24-2) in the anode junction area with the generated gas, and then discharged from the electrolyzer through the outlet manifolds, so that the medium circulation flow of the anode flow path is realized in the form of "double inlet-double outlet".
8. Rectangular plate for high power electrolysers, as claimed in claim 6 or 7, characterized in that the anode tapping (22-1, 22-2) of said plate, shaped as a "bell mouth", connects the inlet manifolds (21-1, 21-2) and the anode active area (23), and inside the "bell mouth" is arranged a flow-guiding ridge (5) capable of evenly tapping the reaction medium and the structural support and a linearly arranged rectangular recess (6); wherein each branch region is communicated by a separate inflow branch port (21-1, 21-2); the anode confluence regions (24-1, 24-2) of the main polar plate are in a horn mouth shape, are connected with the anode active region (23) and the outflow manifold ports (25-1, 25-2), and are internally provided with a flow guide ridge (5) and a linearly arranged rectangular concave platform (6), wherein the flow guide ridge can uniformly conduct reaction media and generated gas; wherein, each confluence area is led out separately and outflow manifold ports (25-1, 25-2) are relatively independent.
9. The rectangular plate for a high power electrolyzer as recited in claim 7 wherein: the anode active area (23) of the main pole plate is internally provided with an array of bosses (3), and reticular cross grooves between the bosses are used for the flow of reaction medium and generated gas in the anode active area.
10. The rectangular plate for a high power electrolysis cell according to claim 5 or 9, wherein: the cathode active region (14) and the anode active region (23) are internally provided with a cross-shaped boss array (3), and the array arrangement form is a fork row or a sequential row; wherein, the shape of the boss can be round, oval or rhombic; when the boss is a cross-shaped boss, the boss has four edges A, B, C and D, the cross section is in a cross shape, the ratio a/B of the longitudinal half length a to the transverse half length B of the boss is 0.1-10, and h is 1-30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211274056.7A CN115528263A (en) | 2022-10-18 | 2022-10-18 | Rectangular polar plate for high-power electrolytic cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211274056.7A CN115528263A (en) | 2022-10-18 | 2022-10-18 | Rectangular polar plate for high-power electrolytic cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115528263A true CN115528263A (en) | 2022-12-27 |
Family
ID=84703000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211274056.7A Pending CN115528263A (en) | 2022-10-18 | 2022-10-18 | Rectangular polar plate for high-power electrolytic cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115528263A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004122027A (en) * | 2002-10-03 | 2004-04-22 | Hoshizaki Electric Co Ltd | Electrolytic cell |
| CN102931427A (en) * | 2012-11-07 | 2013-02-13 | 北京好风光储能技术有限公司 | Lithium-ion flow battery reactor |
| CN207441862U (en) * | 2017-10-13 | 2018-06-01 | 新奥科技发展有限公司 | A kind of bipolar plates and fuel cell |
| CN109742420A (en) * | 2018-12-29 | 2019-05-10 | 上海齐耀动力技术有限公司 | A kind of fuel battery double plates of tree-shaped flow field structure |
| CN113823809A (en) * | 2021-09-30 | 2021-12-21 | 上海忻越智链科技有限公司 | Flow field structure of fuel cell bipolar plate |
| CN114094134A (en) * | 2021-10-08 | 2022-02-25 | 东风汽车集团股份有限公司 | Bipolar plate and fuel cell |
| CN114759208A (en) * | 2022-05-09 | 2022-07-15 | 中国第一汽车股份有限公司 | Fuel cell bipolar plate and fuel cell with same |
| DE102022106498A1 (en) * | 2021-04-08 | 2022-10-13 | Schaeffler Technologies AG & Co. KG | Electrolyser for water electrolysis and method for water electrolysis |
-
2022
- 2022-10-18 CN CN202211274056.7A patent/CN115528263A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004122027A (en) * | 2002-10-03 | 2004-04-22 | Hoshizaki Electric Co Ltd | Electrolytic cell |
| CN102931427A (en) * | 2012-11-07 | 2013-02-13 | 北京好风光储能技术有限公司 | Lithium-ion flow battery reactor |
| CN207441862U (en) * | 2017-10-13 | 2018-06-01 | 新奥科技发展有限公司 | A kind of bipolar plates and fuel cell |
| CN109742420A (en) * | 2018-12-29 | 2019-05-10 | 上海齐耀动力技术有限公司 | A kind of fuel battery double plates of tree-shaped flow field structure |
| DE102022106498A1 (en) * | 2021-04-08 | 2022-10-13 | Schaeffler Technologies AG & Co. KG | Electrolyser for water electrolysis and method for water electrolysis |
| CN113823809A (en) * | 2021-09-30 | 2021-12-21 | 上海忻越智链科技有限公司 | Flow field structure of fuel cell bipolar plate |
| CN114094134A (en) * | 2021-10-08 | 2022-02-25 | 东风汽车集团股份有限公司 | Bipolar plate and fuel cell |
| CN114759208A (en) * | 2022-05-09 | 2022-07-15 | 中国第一汽车股份有限公司 | Fuel cell bipolar plate and fuel cell with same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110129818B (en) | Proton exchange membrane water electrolyzer | |
| CN102306805B (en) | PEMFC (proton exchange membrane fuel cell) metal bipolar plate conducive to improving fluid distribution | |
| CN111477906A (en) | Air-permeable bipolar plate suitable for fuel cell stack and fuel cell stack | |
| CN209804807U (en) | Bipolar plate of fuel cell | |
| CN216120377U (en) | Flow field structure of fuel cell bipolar plate and fuel cell comprising same | |
| CN113690458B (en) | Proton exchange membrane fuel cell bipolar plate | |
| CN110085887B (en) | Fuel cell bipolar plate | |
| CN111477908A (en) | Air-permeable bipolar plate suitable for fuel cell stack and fuel cell stack | |
| CN217848003U (en) | Improve flow cell runner frame of electrolyte distribution homogeneity | |
| CN113823809A (en) | Flow field structure of fuel cell bipolar plate | |
| CN114540851A (en) | Novel anode diffusion layer and proton exchange membrane water electrolytic cell | |
| CN217757689U (en) | Axial non-equidistant corrugated plate electrode structure | |
| CN203521531U (en) | Novel proton exchange membrane fuel battery stack | |
| CN217768433U (en) | High-power hydrogen fuel cell stack | |
| CN115528263A (en) | Rectangular polar plate for high-power electrolytic cell | |
| CN210052797U (en) | Single cell for testing fuel cell | |
| CN114122444B (en) | Oxyhydrogen fuel cell, detachable bipolar plate thereof and manufacturing method | |
| CN101459253B (en) | Large area melting carbonate fuel cell | |
| CN113755859A (en) | Electrolytic cell with multi-channel frame structure inside | |
| CN102969512B (en) | There is the fuel cell of integrated anode and cathode bipolar plates | |
| CN220086090U (en) | Bipolar plate flow field structure and fuel cell | |
| CN114672833B (en) | Anti-blocking electrolytic tank and hydrogen machine comprising same | |
| CN219326846U (en) | Proton exchange membrane water electrolysis metal polar plate | |
| CN212085140U (en) | Novel metal bipolar plate of hydrogen fuel cell | |
| CN216738555U (en) | Electrolytic cell with multi-channel frame structure inside |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |