CN117317288A - Membrane electrode GDL packaging method and positioning device - Google Patents

Membrane electrode GDL packaging method and positioning device Download PDF

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Publication number
CN117317288A
CN117317288A CN202210718981.8A CN202210718981A CN117317288A CN 117317288 A CN117317288 A CN 117317288A CN 202210718981 A CN202210718981 A CN 202210718981A CN 117317288 A CN117317288 A CN 117317288A
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CN
China
Prior art keywords
positioning
gdl
hole
positioning hole
anode
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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
Application number
CN202210718981.8A
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Chinese (zh)
Inventor
于航
陈雪松
龚正伟
晁威
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Weishi Energy Technology Co Ltd
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Weishi Energy Technology Co Ltd
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Priority to CN202210718981.8A priority Critical patent/CN117317288A/en
Publication of CN117317288A publication Critical patent/CN117317288A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
    • H01M8/0286—Processes for forming seals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
    • 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
    • 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
    • H01M8/1004—Fuel cells with solid electrolytes characterised by membrane-electrode assemblies [MEA]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (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)
  • Mechanical Engineering (AREA)
  • Hybrid Cells (AREA)

Abstract

The invention relates to the technical field of fuel cells, in particular to a membrane electrode GDL packaging method and a positioning device, wherein the membrane electrode GDL packaging method comprises the following steps: s01: placing a positioning plate on the anode side of the sealing frame, sequentially inserting a first positioning column into the first positioning hole and the first manifold port, and sequentially inserting a second positioning column into the second positioning hole and the second manifold port; s02: placing an anode GDL in the third positioning hole and attached to the surface of the anode side; s03: placing a positioning plate on the cathode side of the sealing frame, sequentially inserting a first positioning column into the first positioning hole and the first manifold port, and sequentially inserting a second positioning column into the second positioning hole and the second manifold port; s04: placing a cathode GDL in the third positioning hole and connecting to the surface of the cathode side; s05: the anode GDL and the cathode GDL were attached to both sides of the CCM by hot pressing.

Description

Membrane electrode GDL packaging method and positioning device
Technical Field
The invention relates to the technical field of fuel cells, in particular to a membrane electrode GDL packaging method and a positioning device.
Background
The membrane electrode assembly is a core unit of a proton exchange membrane fuel cell and is a key component for converting chemical energy into electric energy. The manufacturing process of the membrane electrode assembly comprises the steps of coating, frame membrane packaging, GDL (Gas Diffusion Layer ) packaging and the like. In the GDL packaging process, the positions of the anode GDL and the cathode GDL need to be precisely positioned, and when the relative positions of the anode GDL or the cathode GDL and the CCM (Catalyst Coated Membrane, catalyst coating film) deviate, the consistency of the membrane electrode assembly, the galvanic pile performance and the like after subsequent hot pressing are affected. The existing GDL packaging technology mostly relies on manual positioning judgment, so that the positioning accuracy cannot be guaranteed, and the automatic visual positioning equipment is used for positioning, so that the positioning accuracy can be guaranteed, but the cost is too high.
Therefore, there is a need for a method and a positioning device for packaging a membrane electrode assembly (GDL) to solve the above-mentioned problems.
Disclosure of Invention
The invention aims to provide a membrane electrode GDL packaging method which can ensure the accuracy of positioning and reduce the cost.
To achieve the purpose, the invention adopts the following technical scheme:
a membrane electrode GDL packaging method, comprising the steps of:
s01: placing a positioning plate on the anode side of a sealing frame, wherein a first manifold port, a second manifold port and a central through hole are formed in the sealing frame, a CCM part is arranged in the central through hole, a first positioning hole, a second positioning hole and a third positioning hole are formed in the positioning plate, the third positioning hole corresponds to the central through hole, a first positioning column is sequentially inserted into the first positioning hole and the first manifold port, and a second positioning column is sequentially inserted into the second positioning hole and the second manifold port;
s02: placing an anode GDL in the third positioning hole and attached to a surface of the anode side;
s03: placing a positioning plate on the cathode side of the sealing frame, sequentially inserting the first positioning column into the first positioning hole and the first manifold port, and sequentially inserting the second positioning column into the second positioning hole and the second manifold port;
s04: placing a cathode GDL in the third positioning hole and attached to a surface of the cathode side;
s05: the anode GDL and the cathode GDL are attached to both sides of the CCM by a hot pressing process.
As a preferred embodiment of the membrane electrode GDL packaging method, step S02 further includes applying a paste to the anode GDL so that the anode GDL can be adhered to the surface of the anode side.
As a preferable mode of the membrane electrode GDL packaging method, step S04 further includes applying a paste on the cathode GDL so that the cathode GDL can be adhered to the surface of the cathode side.
As a preferable scheme of the membrane electrode GDL packaging method, the third positioning hole and the central through hole are rectangular, the length of the third positioning hole is larger than that of the central through hole, the width of the third positioning hole is larger than that of the central through hole, and the length direction of the third positioning hole is parallel to that of the central through hole.
As a preferable mode of the membrane electrode GDL packaging method, the thickness of the third positioning hole is larger than the thickness of the anode GDL, and the thickness of the third positioning hole is larger than the thickness of the cathode GDL.
As a preferable scheme of the membrane electrode GDL packaging method, the length of the third positioning hole is a, the length of the anode GDL is B, and the following conditions are satisfied: a=b+k1, K1 being smaller than a length preset tolerance;
the width of the third positioning hole is C, the width of the anode GDL is D, and the requirements are satisfied: c=d+k2, K2 is smaller than the width preset tolerance.
As a preferred embodiment of the membrane electrode GDL packaging method, the size and shape of the first positioning hole is identical to the size and shape of the first manifold port, and the size and shape of the second positioning hole is identical to the size and shape of the second manifold port.
Another object of the present invention is to provide a positioning device, which can be used in the membrane electrode GDL packaging process, and ensure the accuracy of positioning the anode GDL and the cathode GDL, while reducing the manufacturing cost.
To achieve the purpose, the invention adopts the following technical scheme:
the positioning device is used in the membrane electrode GDL packaging method and comprises a positioning plate, a first positioning column and a second positioning column.
As a preferable scheme of the positioning device, the positioning plate is made of PET, PI, PP, PE, PEEK or PPS.
As a preferable scheme of the positioning device, the first positioning column and the second positioning column are made of sub-lattice force or PVC.
The invention has the beneficial effects that:
the invention provides a membrane electrode GDL packaging method, which comprises the following steps: s01: placing a positioning plate on the anode side of a sealing frame, wherein a first manifold port, a second manifold port and a central through hole are formed in the sealing frame, a CCM part is arranged in the central through hole, a first positioning hole, a second positioning hole and a third positioning hole are formed in the positioning plate, the third positioning hole corresponds to the central through hole, a first positioning column is sequentially inserted into the first positioning hole and the first manifold port, and a second positioning column is sequentially inserted into the second positioning hole and the second manifold port; s02: placing an anode GDL in the third positioning hole and attached to the surface of the anode side; s03: placing a positioning plate on the cathode side of the sealing frame, sequentially inserting a first positioning column into the first positioning hole and the first manifold port, and sequentially inserting a second positioning column into the second positioning hole and the second manifold port; s04: placing a cathode GDL in the third positioning hole and connecting to the surface of the cathode side; s05: the anode GDL and the cathode GDL are attached to both sides of the CCM by a hot pressing process. The membrane electrode GDL packaging method not only can ensure the positioning accuracy, thereby ensuring the quality of the membrane electrode assembly, but also can reduce the cost and improve the economic benefit.
The invention also provides a positioning device which is used in the membrane electrode GDL packaging method and comprises a positioning plate, a first positioning column and a second positioning column.
Drawings
FIG. 1 is a block diagram of a GDL package to be performed according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of step S01 of a method for packaging a membrane electrode GDL according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of step S02 of a method for packaging a membrane electrode GDL according to an embodiment of the present invention;
fig. 4 is a schematic diagram of step S03 of the method for packaging a GDL with a membrane electrode according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of step S04 of a method for packaging a membrane electrode GDL according to an embodiment of the present invention;
fig. 6 is a schematic structural view of a membrane electrode assembly before hot pressing according to an embodiment of the present invention;
FIG. 7 is a top view of a locating plate according to an embodiment of the present invention;
fig. 8 is a front view of a positioning plate according to an embodiment of the present invention.
In the figure:
1. a positioning plate; 11. a first positioning hole; 12. a second positioning hole; 13. a third positioning hole;
2. sealing the frame; 21. an anode side; 22. a cathode side; 201. a first manifold port; 202. a second manifold port; 203. a central through hole;
3、CCM；
4. an anode GDL;
5. and a cathode GDL.
Detailed Description
The technical scheme of the invention is further described below with reference to the attached drawings and the embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the drawings related to the present invention are shown.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixed or removable, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
Most of the existing GDL packaging processes rely on manual positioning judgment, so that the positioning accuracy cannot be guaranteed, and the automatic visual positioning equipment is used for positioning, so that the positioning accuracy can be guaranteed, but the cost is too high. Therefore, the present embodiment provides a membrane electrode GDL packaging method to solve the above-mentioned problems.
As shown in fig. 1 to 6, the membrane electrode GDL packaging method includes the steps of:
s01: as shown in fig. 1, the structural member before GDL packaging is to be performed includes a sealing frame 2 and a CCM3, wherein the sealing frame 2 is provided with a first manifold port 201, a second manifold port 202 and a central through hole 203, part of the CCM3 is disposed in the central through hole 203, and part of the CCM3 is sandwiched between an anode sealing frame and a cathode sealing frame.
As shown in fig. 2, the positioning plate 1 is placed on the anode side 21 of the sealing rim 2. As shown in fig. 7 to 8, the positioning plate 1 is provided with a first positioning hole 11, a second positioning hole 12 and a third positioning hole 13, and the third positioning hole 13 is arranged corresponding to the central through hole 203. The first positioning column is sequentially inserted into the first positioning hole 11 and the first manifold port 201, and the second positioning column is sequentially inserted into the second positioning hole 12 and the second manifold port 202, so that the positioning plate 1 can be fixed relative to the structural member.
S02: as shown in fig. 3, the anode GDL4 is placed in the third positioning hole 13 and attached to the surface of the anode side 21. Preferably, step S02 further comprises gluing the anode GDL4 to enable the anode GDL4 to adhere to the surface of the anode side 21 to prevent displacement of the anode GDL4 during subsequent operations. Alternatively, the types of glue include moisture-curable glues, solvent-type glues, double-sided tape, and the like.
S03: as shown in fig. 4, the positioning plate 1 is placed on the cathode side 22 of the seal frame 2, the first positioning posts are sequentially inserted into the first positioning holes 11 and the first manifold ports 201, and the second positioning posts are sequentially inserted into the second positioning holes 12 and the second manifold ports 202.
S04: as shown in fig. 5, the cathode GDL5 is placed in the third positioning hole 13 and attached to the surface of the cathode side 22. Preferably, step S04 further includes applying a glue to the cathode GDL5 to enable the cathode GDL5 to adhere to the surface of the cathode side 22 to prevent the cathode GDL5 from being displaced during subsequent operations. Alternatively, the types of glue include moisture-curable glues, solvent-type glues, double-sided tape, and the like.
S05: the first positioning column, the second positioning column and the positioning plate 1 are taken out, namely as shown in fig. 6. Then, anode GDL4 and cathode GDL5 were attached to both sides of CCM3 by a hot pressing process.
In order to enable both the anode GDL4 and the cathode GDL5 to cover the central through hole 203, even if the edges of the anode GDL4 and the cathode GDL5 around can be adhesively positioned with the sealing rim 2, it means that the third positioning hole 13 needs to be matched not only in shape but also in size. That is, it is preferable that the third positioning hole 13 and the center through hole 203 are both rectangular, the length of the third positioning hole 13 is greater than the length of the center through hole 203, the width of the third positioning hole 13 is greater than the width of the center through hole 203, and the length direction of the third positioning hole 13 is parallel to the length direction of the center through hole 203. Of course, in other embodiments, the third positioning hole 13 and the central through hole 203 may have other shapes, such as a circle, a polygon, an ellipse, or an irregular shape, and the specific shape is also related to the design of the anode GDL4 and the cathode GDL 5.
In order to ensure that both the anode GDL4 and the cathode GDL5 can be placed inside the third positioning hole 13, it is preferable that the thickness of the third positioning hole 13 is greater than the thickness of the anode GDL4, and the thickness of the third positioning hole 13 is greater than the thickness of the cathode GDL 5.
In order to ensure that the positioning plate 1 can accurately position the anode GDL4 and the cathode GDL5 when the positioning plate 1 is manufactured, the size of the third positioning hole 13 should not be excessively large. Therefore, the length of the third positioning hole 13 is preferably a, and the length of the anode GDL4 is preferably B, satisfying: a=b+k1, K1 is smaller than the length preset tolerance. The width of the third positioning hole 13 is C, and the width of the anode GDL4 is D, satisfying: c=d+k2, K2 is smaller than the width preset tolerance.
Preferably, the first positioning hole 11 is sized and shaped to correspond to the first manifold port 201 and the second positioning hole 12 is sized and shaped to correspond to the second manifold port 202 to ensure that no wobble occurs after insertion of the first or second positioning posts, thereby ensuring accuracy of positioning. Alternatively, the first positioning hole 11 has a circular or polygonal shape, and the second positioning hole 12 has a circular or polygonal shape.
The membrane electrode GDL packaging method not only can ensure the positioning accuracy, thereby ensuring the quality of the membrane electrode assembly, but also can reduce the cost and improve the economic benefit.
The embodiment also provides a positioning device used in the membrane electrode GDL packaging method, which comprises a positioning plate 1, a first positioning column and a second positioning column. The positioning plate 1 is made of PET, PI, PP, PE, PEEK or PPS. The first positioning column and the second positioning column are made of sub-lattice force or PVC. Of course, in other embodiments, the positioning plate 1 may be made of other materials, and the first positioning post and the second positioning post may be made of other materials.
It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.

Claims (10)

1. The membrane electrode GDL packaging method is characterized by comprising the following steps:
s01: placing a positioning plate (1) on an anode side (21) of a sealing frame (2), wherein a first manifold port (201), a second manifold port (202) and a central through hole are formed in the sealing frame (2), a CCM (3) is partially arranged in the central through hole, a first positioning hole (11), a second positioning hole (12) and a third positioning hole (13) are formed in the positioning plate (1), the third positioning hole (13) is arranged corresponding to the central through hole, a first positioning column is sequentially inserted into the first positioning hole (11) and the first manifold port (201), and a second positioning column is sequentially inserted into the second positioning hole (12) and the second manifold port (202);
s02: -placing an anode GDL (4) in said third positioning hole (13) and attached to the surface of said anode side (21);
s03: placing a positioning plate (1) on a cathode side (22) of the sealing frame (2), sequentially inserting the first positioning column into the first positioning hole (11) and the first manifold port (201), and sequentially inserting the second positioning column into the second positioning hole (12) and the second manifold port (202);
s04: -placing a cathode GDL (5) in said third positioning hole (13) and attached to the surface of said cathode side (22);
s05: the anode GDL (4) and the cathode GDL (5) are attached to both sides of the CCM (3) by a hot pressing process.
2. The membrane electrode GDL packaging method according to claim 1, wherein step S02 further comprises gluing on the anode GDL (4) to enable the anode GDL (4) to adhere to the surface of the anode side (21).
3. The membrane electrode GDL packaging method of claim 1, wherein step S04 further comprises gluing on the cathode GDL (5) to enable the cathode GDL (5) to adhere to the surface of the cathode side (22).
4. The method according to claim 1, wherein the third positioning hole (13) and the central through hole are rectangular, the length of the third positioning hole (13) is greater than the length of the central through hole, the width of the third positioning hole (13) is greater than the width of the central through hole, and the length direction of the third positioning hole (13) is parallel to the length direction of the central through hole.
5. The membrane electrode GDL packaging method of claim 1, wherein the thickness of the third positioning hole (13) is greater than the thickness of the anode GDL (4), and the thickness of the third positioning hole (13) is greater than the thickness of the cathode GDL (5).
6. The method of packaging a membrane electrode GDL according to claim 1, wherein the length of the third positioning hole (13) is a and the length of the anode GDL (4) is B, satisfying: a=b+k1, K1 being smaller than a length preset tolerance;
the width of the third positioning hole (13) is C, the width of the anode GDL (4) is D, and the requirements are satisfied: c=d+k2, K2 is smaller than the width preset tolerance.
7. The membrane electrode GDL packaging method of claim 1, wherein the first positioning hole (11) is of a size and shape that is consistent with the size and shape of the first manifold port (201), and the second positioning hole (12) is of a size and shape that is consistent with the size and shape of the second manifold port (202).
8. Positioning device for use in the membrane electrode GDL packaging method according to any of claims 1-7, comprising a positioning plate (1), a first positioning column and a second positioning column.
9. The positioning device according to claim 8, wherein the positioning plate (1) is made of PET, PI, PP, PE, PEEK or PPS.
10. The positioning device of claim 8, wherein the first positioning post and the second positioning post are both sub-lattice force or PVC.
CN202210718981.8A 2022-06-23 2022-06-23 Membrane electrode GDL packaging method and positioning device Pending CN117317288A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210718981.8A CN117317288A (en) 2022-06-23 2022-06-23 Membrane electrode GDL packaging method and positioning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210718981.8A CN117317288A (en) 2022-06-23 2022-06-23 Membrane electrode GDL packaging method and positioning device

Publications (1)

Publication Number Publication Date
CN117317288A true CN117317288A (en) 2023-12-29

Family

ID=89245023

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210718981.8A Pending CN117317288A (en) 2022-06-23 2022-06-23 Membrane electrode GDL packaging method and positioning device

Country Status (1)

Country Link
CN (1) CN117317288A (en)

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