CN115881999A - Method for manufacturing single cell and method for manufacturing stack - Google Patents
Method for manufacturing single cell and method for manufacturing stack Download PDFInfo
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- CN115881999A CN115881999A CN202111144903.3A CN202111144903A CN115881999A CN 115881999 A CN115881999 A CN 115881999A CN 202111144903 A CN202111144903 A CN 202111144903A CN 115881999 A CN115881999 A CN 115881999A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000007789 sealing Methods 0.000 claims abstract description 123
- 239000012528 membrane Substances 0.000 claims abstract description 27
- 238000001816 cooling Methods 0.000 claims abstract description 26
- 238000001746 injection moulding Methods 0.000 claims abstract description 23
- 230000008569 process Effects 0.000 claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 238000003825 pressing Methods 0.000 claims abstract 2
- 238000002347 injection Methods 0.000 claims description 15
- 239000007924 injection Substances 0.000 claims description 15
- 239000011248 coating agent Substances 0.000 claims description 11
- 238000000576 coating method Methods 0.000 claims description 11
- 238000009792 diffusion process Methods 0.000 claims description 11
- 239000003566 sealing material Substances 0.000 claims description 11
- 238000007650 screen-printing Methods 0.000 claims description 10
- 238000005507 spraying Methods 0.000 claims description 9
- 229920001897 terpolymer Polymers 0.000 claims description 6
- 229920001296 polysiloxane Polymers 0.000 claims description 4
- 229920002379 silicone rubber Polymers 0.000 claims description 2
- 239000004945 silicone rubber Substances 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims 1
- 210000004027 cell Anatomy 0.000 description 53
- 239000010410 layer Substances 0.000 description 30
- 239000007789 gas Substances 0.000 description 9
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 7
- 239000001257 hydrogen Substances 0.000 description 7
- 229910052739 hydrogen Inorganic materials 0.000 description 7
- 229920001971 elastomer Polymers 0.000 description 4
- -1 hydrogen ions Chemical class 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 239000000499 gel Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 229920000877 Melamine resin Polymers 0.000 description 2
- 239000006087 Silane Coupling Agent Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000007822 coupling agent Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000010970 precious metal Substances 0.000 description 2
- 238000006722 reduction reaction Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229920002943 EPDM rubber Polymers 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000003850 cellular structure Anatomy 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000012945 sealing adhesive Substances 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Images
Classifications
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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
-
- 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
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Fuel Cell (AREA)
Abstract
The invention provides a single cell manufacturing method and a stack manufacturing method, wherein the single cell manufacturing method comprises the following steps: s10: injection molding a cooling sealing part on the back of the anode plate or the cathode plate; s20: the positive sealing part is formed on the front surface of the positive plate in an injection molding mode, and the negative sealing part is formed on the front surface of the negative plate in an injection molding mode; s30: placing the membrane electrode and the sealing frame connected with each other between the anode sealing part and the cathode sealing part; s40: and pressing and heating the combined structure in the step S30 to bond the anode plate to one side of the sealing frame through the anode sealing part and bond the cathode plate to the other side of the sealing frame through the cathode sealing part. The method forms a single cell in a structure that a membrane electrode and the like are clamped by an anode plate and a cathode plate, and realizes reliable sealing of the single cell by an injection-molded anode sealing part and a cathode sealing part. The single cell manufactured by the method improves the reliability of the single cell and the cell stack, and has simple processing and assembly processes and reduced manufacturing cost.
Description
Technical Field
The invention relates to the technical field of fuel cells, in particular to a single cell manufacturing method and a stack manufacturing method.
Background
The fuel cell stack is composed of a large number of same single cell components, the reaction principle of each single cell can be briefly described as that hydrogen gas is subjected to oxidation reaction at an anode to generate electrons and hydrogen ions, the hydrogen ions reach a cathode through a membrane electrode, and are subjected to reduction reaction with oxygen and electrons directionally moved by an external circuit at the cathode, and the electrons generated by electrochemical reaction directionally move at the external circuit in the process to form current to drive an external load to work. The monocell of the pile is composed of a cathode plate, an anode plate and a membrane electrode assembly, oxygen or air is uniformly distributed on the cathode plate, hydrogen is uniformly distributed on the anode plate, and the hydrogen and the oxygen react on a catalyst layer through a diffusion layer of the membrane electrode assembly to generate water and generate electricity.
At present, the galvanic pile is basically composed of a cathode plate, an anode plate and a membrane electrode assembly, after the cathode plate and the anode plate are prepared, coating (making the plates have corrosion resistance and conductivity) and sealing are respectively carried out, the sealing is respectively prepared on the front surfaces of the anode plate and the cathode plate, the sealing is prepared on the back surface of one of the two electrode plates, the sealing of reaction fluid can be ensured through compression, the membrane electrode assembly is composed of a sealing frame, a Gas Diffusion Layer (GDL) and a proton exchange membrane (CCM) with a catalyst, the sealing frame and the CCM are generally jointed into a whole, the galvanic pile with more than 100KW generally needs 300-400 monocells, namely the cathode plate, the anode plate, the CCM with the sealing frame and the GDL with more than one, the assembling process is complicated, the sealing section is more, and leakage is easy to occur.
In the prior art, a cathode single plate and an anode single plate are welded or bonded to form an assembly, the assembly can achieve the effect of sealing cooling liquid while being connected with a single-pole plate, the connected metal sheet assembly is subjected to surface coating, namely coating treatment to ensure that the metal sheet has corrosion resistance and electric conductivity, a formed sealing gasket is glued or adhered on the metal sheet assembly subjected to coating, and anode and cathode gases are sealed in a single cell by compressing a sealing adhesive.
However, due to the limitation of the assembly process, errors must exist between the bipolar plates, which causes that the cathode and anode flow channels cannot be completely opposite, when the misalignment occurs, the GDL will be embedded into the flow channel to cause the gas pressure drop to increase, the air input amount is reduced, thereby the performance is reduced, meanwhile, as the volume power density of the stack increases, the thicknesses of the bipolar plates and the MEA are continuously reduced, the sealing size in the middle is also reduced, the sealing is realized by compressing a sealing rubber strip, when the sealing size precision is not good, the leakage probability will rise exponentially, namely, the structure of the bipolar plates and the MEA has a high precision requirement on the sealing, which causes the increase of the sealing cost and the reduction of the sealing robustness, namely, the sealing is too sensitive to the size, and is not beneficial to mass production.
Disclosure of Invention
The invention provides a method for manufacturing a single cell and a method for manufacturing a cell stack, which aim to improve the reliability of the single cell and the cell stack and reduce the manufacturing cost.
In order to achieve the above object, according to one aspect of the present invention, there is provided a single cell manufacturing method including: s10: injection molding a cooling sealing part on the back of the anode plate or the cathode plate; s20: the positive sealing part is formed on the front surface of the positive plate in an injection molding mode, and the negative sealing part is formed on the front surface of the negative plate in an injection molding mode; s30: placing the membrane electrode and the sealing frame connected with each other between the anode sealing part and the cathode sealing part; s40: the combined structure in S30 is pressed and heated so that the anode plate is bonded to one side of the sealing frame through the anode sealing part and the cathode plate is bonded to the other side of the sealing frame through the cathode sealing part.
Further, in S20, injection molding an anode sealing part on a front surface of the anode plate includes: coating a sealing material on the front surface of the anode plate, and vulcanizing at 75-85 ℃ for 8-12 minutes to form an anode sealing part with a preset shape; injection molding the cathode sealing part on the front surface of the cathode plate comprises: the sealing material is coated on the front surface of the cathode plate and vulcanized at 75 to 85 ℃ for 8 to 12 minutes to form a cathode sealing part of a predetermined shape.
Further, in S40, heating the combined structure includes: the combined structure is vulcanized at 145-155 ℃ for 8-12 minutes to form a single cell.
Further, S10 includes: s11: arranging a cooling primer layer on the back of the cathode plate by a spraying or screen printing process; s12: the cooling seal is injection molded over the cooling primer.
Further, S20 includes: s21: arranging an anode bottom coating on the front surface of the anode plate through a spraying or screen printing process, and arranging a cathode bottom coating on the front surface of the cathode plate; s22: an anode seal is injection molded to the anode primer layer and a cathode seal is injection molded to the cathode primer layer.
Further, the single cell manufacturing method further includes: s02: an anodic bonding primer layer is disposed on a side of the sealing frame facing the anodic sealing portion, and a cathodic bonding primer layer is disposed on a side of the sealing frame facing the cathodic sealing portion, by a spray coating or screen printing process.
Further, the single cell manufacturing method further includes: s01: and fixing the membrane electrode on a sealing frame, arranging an anode gas diffusion layer on one side of the membrane electrode, and arranging a cathode gas diffusion layer on the other side of the membrane electrode.
Further, in S10, the cooling seal portion is injection molded using a terpolymer or a silicone gel; in S20, the anode sealing portion and the cathode sealing portion are injection molded using a terpolymer or a silicone gel.
According to another aspect of the present invention, there is provided a stack manufacturing method, the stack including a plurality of unit cells, the unit cells being manufactured by the above-described unit cell manufacturing method, the stack manufacturing method including: a plurality of single cells are stacked and connected to form a stack.
Further, stacking and connecting a plurality of unit cells to form a stack includes: s51: placing the back surfaces of the cathode plates of the monocells towards the same direction, and butting the cathode plates and the anode plates of the adjacent monocells; s52: adjacent cathode and anode plates are bonded by a cooling seal of a single cell, with the region between adjacent cathode and anode plates forming a cooling zone.
The technical scheme of the invention is applied to provide a single cell manufacturing method, which comprises the following steps: s10: injection molding a cooling sealing part on the back of the anode plate or the cathode plate; s20: the positive sealing part is formed on the front side of the positive plate in an injection molding mode, and the negative sealing part is formed on the front side of the negative plate in an injection molding mode; s30: placing the membrane electrode and the sealing frame connected with each other between the anode sealing part and the cathode sealing part; s40: the combined structure in S30 is pressed and heated so that the anode plate is bonded to one side of the sealing frame through the anode sealing part and the cathode plate is bonded to the other side of the sealing frame through the cathode sealing part. With this method, a single cell is formed in a structure in which a membrane electrode and the like are sandwiched by anode plates and cathode plates, and reliable sealing of the single cell is achieved by the injection-molded anode sealing portion and cathode sealing portion. The single cell manufactured by the method improves the reliability of the single cell and the cell stack, and has simple processing and assembling processes and reduced manufacturing cost.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows a flowchart of a single cell manufacturing method provided by an embodiment of the present invention;
fig. 2 is a schematic view showing the structure of a unit cell manufactured using the unit cell manufacturing method;
FIG. 3 shows a schematic structural view of the membrane electrode assembly of FIG. 2;
FIG. 4 shows a schematic structural view of the anode assembly of FIG. 2 on the front side;
FIG. 5 shows a schematic structural view of the cathode assembly of FIG. 2 on the front side;
FIG. 6 shows a schematic view of the cathode assembly of FIG. 2 on the back side;
fig. 7 shows a cross-sectional view of the cell in fig. 2.
Wherein the figures include the following reference numerals:
10. an anode assembly; 11. an anode plate; 111. an anode hydrogen port; 112. an anode air port; 113. an anode cooling fluid port; 12. an anode sealing part; 13. a hydrogen gas flow channel; 14. an anode primer layer; 15. anodic bonding of a base coat; 16. a hydrogen distribution region; 20. a cathode assembly; 21. a cathode plate; 211. a cathode hydrogen port; 212. a cathode air port; 213. a cathode coolant port; 22. a cathode sealing part; 23. an air flow passage; 24. a cathode primer layer; 25. cathode bonding primer; 26. cooling the base coat; 27. an air distribution zone; 30. a membrane electrode assembly; 31. a membrane electrode; 32. sealing the frame; 33. an anode gas diffusion layer; 34. a cathode gas diffusion layer; 40. and cooling the sealing part.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 7, an embodiment of the present invention provides a single cell manufacturing method including: s10: injection molding a cooling seal part 40 on the back surface of the anode plate 11 or the cathode plate 21; s20: an anode sealing part 12 is formed on the front surface of the anode plate 11 in an injection molding mode, and a cathode sealing part 22 is formed on the front surface of the cathode plate 21 in an injection molding mode; s30: a membrane electrode 31 and a seal frame 32 to be connected to each other are placed between the anode seal portion 12 and the cathode seal portion 22; s40: the combined structure in S30 is pressed and heated to bond the anode plate 11 through one side of the anode sealing part 12 and the sealing frame 32, and to bond the cathode plate 21 through the other side of the cathode sealing part 22 and the sealing frame 32.
With this method, a single cell is formed in a structure in which the membrane electrode 31 and the like are sandwiched by the anode plate 11 and the cathode plate 21, and reliable sealing of the single cell is achieved by the injection-molded anode sealing portion 12 and cathode sealing portion 22. The single cell manufactured by the method improves the reliability of the single cell and the cell stack, and has simple processing and assembling processes and reduced manufacturing cost.
Specifically, in S20, injection molding the anode sealing part 12 on the front surface of the anode plate 11 includes: coating a sealing material on the front surface of the anode plate 11 and vulcanizing at 75-85 ℃ for 8-12 minutes to form an anode sealing part 12 of a predetermined shape; injection molding of the cathode sealing part 22 on the front surface of the cathode plate 21 includes: the sealing material is coated on the front surface of the cathode plate 21 and vulcanized at 75 to 85 ℃ for 8 to 12 minutes to form a cathode sealing part 22 of a predetermined shape. This injection molding process may be referred to as primary vulcanization. Through the above process, the anode sealing part 12 and the cathode sealing part 22 may reach a designed shape and may not be completely cross-linked.
Further, in S40, heating the combined structure includes: the combined structure is vulcanized at 145-155 ℃ for 8-12 minutes to form a single cell. Thus, the anode sealing part 12 and the cathode sealing part 22 can be sufficiently bonded with the matched structure, and reliable sealing of the single cell is ensured.
Wherein, S10 includes: s11: arranging a cooling primer layer 26 on the rear surface of the cathode plate 21 by a spray coating or screen printing process; s12: the cooling seal 40 is injection molded over the cooling primer 26. The primer treatment is that the sealing material is usually an elastomer rubber material such as silica gel, ethylene propylene diene monomer or fluororubber, the surfaces of the cathode plate 21 and the anode plate 11 are provided with precious metal coating films, the rubber and the precious metal generally have no adhesive force, a coupling agent is required to be arranged between the sealing material and the pole plate coating layer in order to ensure good sealing, and the primer material is generally a melamine compound, a silane coupling agent and other materials, and has the characteristic of rapid room temperature curing, so that before the injection molding sealing process, a cooling primer layer 26 is arranged at the position where the sealing material is required to be molded by using a spraying or screen printing process, and the thickness of the primer layer is generally controlled to be 10-20 μm.
In the present embodiment, S20 includes: s21: disposing an anode undercoating layer 14 on the front surface of the anode plate 11 and a cathode undercoating layer 24 on the front surface of the cathode plate 21 by a spray coating or screen printing process; s22: anode seal 12 is injection molded to anode primer layer 14 and cathode seal 22 is injection molded to cathode primer layer 24. By disposing a coupling agent undercoat layer between the sealing material and the plate coating, the adhesion strength of the anode seal portion 12 and the anode plate 11 and the adhesion strength of the cathode seal portion 22 and the cathode plate 21 are improved. The base coat is generally made of melamine compound, silane coupling agent and the like, and has the characteristic of quick room temperature curing.
Further, the single cell manufacturing method further includes: s02: the anodic bonding primer layer 15 is disposed on the side of the sealing frame 32 facing the anodic sealing portion 12, and the cathodic bonding primer layer 25 is disposed on the side of the sealing frame 32 facing the cathodic sealing portion 22, by a spray coating or screen printing process. The anode adhesion primer layer 15 can improve the bonding strength between the anode sealing portion 12 and the sealing frame 32, and the cathode adhesion primer layer 25 can improve the bonding strength between the cathode sealing portion 22 and the sealing frame 32.
In the present embodiment, the single cell manufacturing method further includes: s01: the membrane electrode 31 is fixed on the seal frame 32, and an anode gas diffusion layer is arranged on one side of the membrane electrode 31 and a cathode gas diffusion layer is arranged on the other side of the membrane electrode 31. The hydrogen gas and the oxygen gas in the air pass through the diffusion layer of the membrane electrode 31, react on the catalyst layer, generate water, and generate electricity.
Wherein, in S10, the cooling seal portion 40 is injection molded using a terpolymer or a silicone rubber; in S20, the anode sealing part 12 and the cathode sealing part 22 are injection molded using a terpolymer or a silicone gel. The material is easy to form, has good sealing performance and low requirement on process precision, and can reduce the processing cost.
Another embodiment of the present invention provides a method of manufacturing a cell stack, the cell stack including a plurality of unit cells, the unit cells being manufactured by the above-described method of manufacturing a unit cell, the method of manufacturing a cell stack including: a plurality of single cells are stacked and connected to form a stack. Compared with the mode of adopting a bipolar plate, the method has the advantages that the assembly process can be simplified, and the sealing precision requirement is reduced, so that the reliability of the electric pile is improved, and the manufacturing cost is reduced.
Specifically, stacking and connecting a plurality of unit cells to form a stack includes: s51: placing the back surfaces of the cathode plates 21 of the plurality of single cells in the same direction, and butting the cathode plates 21 and the anode plates 11 of the adjacent single cells; s52: the adjacent cathode plate 21 and anode plate 11 are bonded by the cooling seal portion 40 of one single cell, and the region between the adjacent cathode plate 21 and anode plate 11 forms a cooling zone.
In the scheme, the bonding and sealing form can ensure zero leakage of reaction gas, and meanwhile, the sealing material is not compressed or is slightly compressed, so that the very long sealing service life can be ensured; the anode plate, the cathode plate and the MEA are combined into a single cell form, so that dislocation among the cathode plate and the anode plate can be avoided, the dislocation robustness among adjacent single cells is good, and the galvanic pile has good power generation consistency; compared with a stack structure of bipolar plates and MEA, the stack structure adopting the monocell can double the stacking efficiency of the stack.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A method of manufacturing a single cell, the method comprising:
s10: injection molding a cooling seal part (40) on the back surface of the anode plate (11) or the cathode plate (21);
s20: an anode sealing part (12) is formed on the front surface of the anode plate (11) in an injection molding mode, and a cathode sealing part (22) is formed on the front surface of the cathode plate (21) in an injection molding mode;
s30: placing a membrane electrode (31) and a sealing frame (32) connected to each other between the anode sealing part (12) and the cathode sealing part (22);
s40: and pressing and heating the combined structure in S30 to bond the anode plate (11) through the anode sealing part (12) and one side of the sealing frame (32), and bond the cathode plate (21) through the cathode sealing part (22) and the other side of the sealing frame (32).
2. The cell manufacturing method according to claim 1, wherein in S20,
the injection molding of the anode sealing part (12) on the front surface of the anode plate (11) comprises: coating a sealing material on the front surface of the anode plate (11) and vulcanizing at 75-85 ℃ for 8-12 minutes to form the anode sealing part (12) with a predetermined shape;
the injection molding of the cathode seal (22) on the front surface of the cathode plate (21) includes: a sealing material is applied to the front surface of the cathode plate (21) and vulcanized at 75-85 ℃ for 8-12 minutes to form the cathode sealing portion (22) in a predetermined shape.
3. The cell manufacturing method according to claim 1, wherein in S40, heating the combined structure includes: vulcanizing the combined structure at 145-155 ℃ for 8-12 minutes to form a single cell.
4. The cell manufacturing method according to claim 1, wherein S10 includes:
s11: -arranging a cooling primer layer (26) on the back of the cathode plate (21) by a spray or screen printing process;
s12: the cooling seal (40) is injection molded onto the cooling primer (26).
5. The cell manufacturing method according to claim 1, wherein S20 includes:
s21: arranging an anode primer layer (14) on the front surface of the anode plate (11) and arranging a cathode primer layer (24) on the front surface of the cathode plate (21) by a spraying or screen printing process;
s22: the anode seal (12) is injection molded to the anode ground coat (14) and the cathode seal (22) is injection molded to the cathode ground coat (24).
6. The cell manufacturing method according to claim 1, characterized by further comprising:
s02: an anodic bonding primer layer (15) is arranged on the side of the sealing frame (32) facing the anodic sealing part (12) and a cathodic bonding primer layer (25) is arranged on the side of the sealing frame (32) facing the cathodic sealing part (22) by a spray coating or screen printing process.
7. The cell manufacturing method according to claim 1, characterized by further comprising:
s01: and fixing the membrane electrode (31) on the sealing frame (32), arranging an anode gas diffusion layer on one side of the membrane electrode (31), and arranging a cathode gas diffusion layer on the other side of the membrane electrode (31).
8. The cell manufacturing method according to claim 1, characterized in that, in S10, the cooling seal portion (40) is injection molded using a terpolymer or a silicone rubber; in S20, the anode sealing part (12) and the cathode sealing part (22) are injection molded using a terpolymer or a silicone gel.
9. A cell stack manufacturing method characterized in that a cell stack includes a plurality of cells manufactured by the cell manufacturing method according to any one of claims 1 to 8, the cell stack manufacturing method comprising:
a plurality of the unit cells are stacked and connected to form a stack.
10. The stack manufacturing method according to claim 9, wherein stacking and connecting a plurality of the unit cells to form the stack includes:
s51: placing the back surfaces of the cathode plates (21) of the single cells in the same direction, and butting the cathode plates (21) and the anode plates (11) of the adjacent single cells;
s52: and adhering the adjacent cathode plate (21) and the anode plate (11) through a cooling sealing part (40) of the single cell, wherein the area between the adjacent cathode plate (21) and the anode plate (11) forms a cooling area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111144903.3A CN115881999A (en) | 2021-09-28 | 2021-09-28 | Method for manufacturing single cell and method for manufacturing stack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111144903.3A CN115881999A (en) | 2021-09-28 | 2021-09-28 | Method for manufacturing single cell and method for manufacturing stack |
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| Publication Number | Publication Date |
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| CN115881999A true CN115881999A (en) | 2023-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111144903.3A Pending CN115881999A (en) | 2021-09-28 | 2021-09-28 | Method for manufacturing single cell and method for manufacturing stack |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116525872A (en) * | 2023-06-30 | 2023-08-01 | 苏州氢澜科技有限公司 | Low-leakage integrated single fuel cell sealing structure |
-
2021
- 2021-09-28 CN CN202111144903.3A patent/CN115881999A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116525872A (en) * | 2023-06-30 | 2023-08-01 | 苏州氢澜科技有限公司 | Low-leakage integrated single fuel cell sealing structure |
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