CN114300703A - Membrane electrode for a fuel cell, fuel cell and method for assembling a fuel cell - Google Patents
Membrane electrode for a fuel cell, fuel cell and method for assembling a fuel cell Download PDFInfo
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- CN114300703A CN114300703A CN202111451067.3A CN202111451067A CN114300703A CN 114300703 A CN114300703 A CN 114300703A CN 202111451067 A CN202111451067 A CN 202111451067A CN 114300703 A CN114300703 A CN 114300703A
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Abstract
The invention provides a membrane electrode of a fuel cell, a fuel cell and an assembling method of the fuel cell. A membrane electrode of a fuel cell comprises a membrane electrode frame and membrane materials, wherein the membrane electrode frame is arranged on two sides of the membrane materials, the membrane materials comprise proton membranes, anode carbon paper and cathode carbon paper, an anode injection molding sealing hole and a cathode injection molding sealing hole are further formed in the membrane electrode frame, and injection molding sealing rubber strips are formed through the anode injection molding hole and the cathode injection molding hole. The invention has the beneficial effects that: the production efficiency is improved, the assembly process of the sealing rubber strip is simplified, and the cost is reduced while a better sealing effect can be achieved.
Description
Technical Field
The invention relates to the field of injection membrane electrodes of fuel cells, in particular to a membrane electrode of a fuel cell, the fuel cell and an assembling method of the fuel cell.
Background
The traditional membrane electrode seal fixes the adhesive tape in the corresponding seal groove of the polar plate, the bonding process is complex, the production efficiency is low, meanwhile, a limiting device is not arranged, the two corresponding seal adhesive tapes on the two sides of the membrane electrode frame can only achieve theoretical complete alignment, but the operation error in the actual operation is easy to cause dislocation, so that the gas leakage is caused. The sealing rubber thread is bonded in the sealing groove of the single-side polar plate of the bipolar plate, and complex procedures are needed.
Disclosure of Invention
In order to solve the above technical problems, the present invention discloses a membrane electrode for a fuel cell, a fuel cell and a method for assembling a fuel cell, and the technical solution of the present invention is implemented as follows:
a membrane electrode of a fuel cell comprises a membrane electrode frame and membrane materials, wherein the membrane electrode frame is arranged on two sides of the membrane materials, the membrane materials comprise a proton membrane, anode carbon paper and cathode carbon paper, an anode injection molding sealing hole and a cathode injection molding sealing hole are formed in the membrane electrode frame, and injection molding sealing rubber strips are formed through the anode injection molding hole and the cathode injection molding hole.
Preferably, the membrane electrode frame is provided with an anode gas outlet, a coolant outlet, a cathode gas inlet, a cathode gas outlet, a coolant inlet, and an anode gas inlet, the electrode gas outlet, the coolant inlet, and the cathode gas inlet are disposed at one side of the membrane electrode frame, and the anode gas inlet, the cathode gas outlet, and the coolant outlet are disposed at the other side of the membrane electrode frame
Preferably, the injection molded bead is one piece.
Preferably, the shapes of the anode injection molding hole and the cathode injection molding hole comprise a circular shape or a profiled shape.
Preferably, the material of the injection molding sealing rubber strip comprises ethylene propylene diene monomer rubber and silicone rubber.
Preferably, the material of the injection molding sealing rubber strip further comprises hydrogenated nitrile rubber, fluorine rubber and fluorine silicone rubber.
A fuel cell comprises a membrane electrode and a bipolar plate, wherein the bipolar plate is arranged on two sides of the membrane electrode, a sealing groove is formed in the bipolar plate, and a limiting structure is arranged on the sealing groove.
A method of manufacturing a fuel cell according to the above, characterized in that:
s1: arranging the anode sealing injection molding hole and the injection molding sealing hole on the membrane electrode frame of the fuel cell;
s2: bonding the membrane electrode frame, the proton membrane, the anode carbon paper and the cathode carbon paper to form a membrane electrode;
s3: injecting an injection molding sealing material through the anode sealing hole and the cathode sealing hole;
s4: sealing the membrane electrode with the bipolar plate;
s5: the assembled fuel cell is cooled.
Preferably, in S1, the membrane electrode rim is cast by means of mold injection.
Preferably, in S4, the membrane electrode and the bipolar plate are sealed by compression.
The technical scheme of the invention can solve the technical problems that the bonding process of the sealing rubber strip of the fuel cell is complex, the production efficiency is low and the sealing rubber strip is dislocated during operation in the prior art; by implementing the technical scheme of the invention, the injection molding holes are formed in the frame of the membrane electrode, so that the technical effect that the injection molding strips are easy to install and are complete and integrated can be realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only one embodiment of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
FIG. 1 is a schematic view of a membrane electrode structure;
FIG. 2 is a partial schematic view of an injection molding hole;
FIG. 3 is a schematic diagram of a frame structure of a membrane electrode;
FIG. 4 is a schematic cross-sectional view of a fuel cell;
FIG. 5 is a schematic cross-sectional view of a fuel cell;
FIG. 6 is a partial schematic view of an injection molding hole;
FIG. 7 is a schematic view of a membrane electrode structure;
FIG. 8 is a schematic view of a membrane electrode structure;
FIG. 9 is a schematic view of a membrane electrode structure;
FIG. 10 is a schematic view of a membrane electrode structure;
FIG. 11 is a schematic view of a membrane electrode structure;
FIG. 12 is a schematic view of a membrane electrode structure;
fig. 13 is a flow chart illustrating a fuel cell assembly method.
In the above drawings, the reference numerals denote:
1 gas outlet of anode
2 outlet of cooling liquid
3 cathode gas inlet
4 cathode gas outlet
5 cooling liquid inlet
6 anode gas inlet
7 film electrode frame
7-1 cathode frame
7-2 anode frame
8 anode sealing injection hole
9 cathode sealing injection molding hole
10 bipolar plate
11 injection molding sealing rubber strip
12 anode side sealing groove
13 cathode side sealing groove
14 anode carbon paper
15 cathode carbon paper
16 proton membrane
17 limit structure
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Example 1
In embodiment 1, as shown in fig. 1 and 2, a membrane electrode of a fuel cell includes a membrane electrode frame 7 and a membrane material, the membrane electrode frame 7 is disposed on two sides of the membrane material, the membrane material includes a proton membrane 16, an anode carbon paper 14 and a cathode carbon paper 15, an anode injection molding sealing hole 8 and a cathode injection molding sealing hole 9 are further disposed on the membrane electrode frame 7, wherein an injection molding sealing strip 11 is formed through the anode injection molding hole 8 and the cathode injection molding hole 9.
In embodiment 1, the membrane electrode is composed of a membrane electrode frame 7 and membrane materials, the membrane materials include an anode carbon paper 14, a cathode carbon paper 15 and a proton membrane 16, the membrane electrode frame 7 is bonded to two sides of the membrane materials, and the bipolar plate 10 is bonded to two sides of the membrane electrode to form a fuel cell with a complete structure. The membrane electrode frame 7 complete structure comprises an anode gas outlet 1, a cooling liquid outlet 2, a cathode gas inlet 3, a cathode gas outlet 4, a cooling liquid inlet 5 and an anode gas inlet 6, the sealing operation of the membrane electrode of the fuel cell adopts the bonding technology in the current technology and the actual production operation, namely, a sealing rubber strip is bonded on the polar plate, and then the sealing is realized by bonding the polar plate and the membrane electrode, but the operation process is complex, the sealing rubber strip is easy to be misplaced, so that the gas leakage is caused and the service life of the fuel cell is further influenced. In embodiment 1, the membrane electrode frame 7 is provided with the anode seal injection molding hole 8 and the cathode seal injection molding hole 9, and the anode seal injection molding hole 8 and the cathode seal injection molding hole 9 on the two sides of the anode frame 7-2 and the cathode frame 7-1 are integrated, the injection molding sealing rubber strip 11 becomes a part of the fuel cell, the membrane material is firstly bonded, the anode carbon paper 14, the cathode carbon paper 15 and the proton membrane are bonded together to form a membrane material, the membrane electrode frame 7 is bonded on the two sides of the membrane material to form a membrane electrode, and the injection molding sealing rubber strip 11 is formed by injecting injection molding sealing material into the anode seal injection molding hole 8 and the cathode seal injection molding hole 9.
The injection molding sealing rubber strip 11 can effectively ensure the sealing performance of the whole fuel cell, and the injection molding sealing rubber strip 11 can be simply installed and has simple procedures by arranging the anode sealing injection molding hole 8 and the cathode sealing injection molding hole 9 on the membrane electrode frame 7. The injection-molded sealing rubber strip 11 does not need to be bonded separately, but the injection-molded sealing rubber strip 11 is installed as a separate part, so that the installation of the injection-molded sealing rubber strip 11 is simplified. The sealing of the injection molding sealing rubber strip 11 does not need to be carried out independently, but the sealing can be realized only by pressing the bipolar plate 10 and the membrane electrode, so that the bonding material can be saved.
The anode sealing injection hole 8 and the cathode sealing injection hole 9 on the membrane electrode frame 7 are formed by arranging the anode sealing injection hole 8 and the cathode sealing injection hole 9 on an injection mold of the membrane electrode frame 7, and the shapes of the anode sealing injection hole 8 and the cathode sealing injection hole 9 can be correspondingly adjusted by adjusting the shapes of the injection holes on the mold, so that the membrane electrode frame 7 can be effectively sealed under different conditions.
The injection molding operation is directly operated in the process of manufacturing the fuel cell, no additional material or device is needed, the manufacturing cost is saved, the installation of the injection molding sealing rubber strip 11 can be realized on the same production line of the fuel cell, the mass production time and cost can be saved, and the production cost of the fuel cell is greatly reduced. The injection molding sealing rubber strip 11 is formed by injecting injection molding sealing materials into the anode sealing injection molding hole 8 and the cathode sealing injection molding hole 9, the anode sealing injection molding hole 8 corresponds to the cathode sealing injection molding hole 9 in position, the structural integrity of the injection molding sealing rubber strip 11 is guaranteed, the injection molding sealing rubber strip 11 is guaranteed to have good sealing performance, and the sealing performance of the injection molding sealing rubber strip exceeds that of the prior art.
As shown in fig. 5, which is a cross-sectional view of a sealed fuel cell in the prior art, it can be seen that the conventional sealing is to fix the injection-molded sealing rubber strip 11 in the sealing groove of the corresponding polar plate by bottom-coating, which requires a complex bonding process to result in low production efficiency and increased production cost, and the conventional sealing has no position-limiting device, which results in easy occurrence of dislocation in actual operation, poor sealing performance of the fuel cell, easy occurrence of gas leakage in the using process, and great problems in the service life and quality of the fuel cell, and the good performance and service life of the fuel cell can be ensured by providing the anode sealing injection hole 8 and the cathode sealing injection hole 9 in the membrane electrode frame 7, and at the same time, the assembly process can be simplified, materials can be saved, and the production cost can be reduced. As shown in fig. 4, in order to use the cross-sectional view of the fuel cell of example 1, the plastic bead seal 11 does not need to be separately bonded, but the injection bead seal 11 is mounted as a separate component, which simplifies the mounting of the injection bead seal 11. The sealing of the injection molding sealing rubber strip 11 does not need to be carried out independently, but the sealing can be realized only by pressing the bipolar plate 10 and the membrane electrode, so that the bonding material can be saved. The anode sealing injection hole 8 and the cathode sealing injection hole 9 on the membrane electrode frame 7 are formed by arranging the anode sealing injection hole 8 and the cathode sealing injection hole 9 on an injection mold of the membrane electrode frame 7, and the shapes of the anode sealing injection hole 8 and the cathode sealing injection hole 9 can be correspondingly adjusted by adjusting the shapes of the injection holes on the mold, so that the membrane electrode frame 7 can be effectively sealed under different conditions. The limit structure 17 arranged on the sealing groove on the bipolar plate 10 can effectively prevent dislocation in the injection molding process, and ensure that the fuel cell has good sealing performance. In the prior art, because the limit structure 17 does not exist, when the sealing is performed by a bonding mode, deviation is easy to occur in the bonding process, the sealing performance of the fuel cell is influenced, so that gas or liquid leakage is easy to occur in the fuel cell during use, and the service life of the fuel cell is influenced.
In a preferred embodiment, as shown in fig. 3, an anode gas outlet 1, a coolant outlet 2, a cathode gas inlet 3, a cathode gas outlet 4, a coolant inlet 5 and an anode gas inlet 3 are provided on the membrane electrode frame 7, the anode gas outlet 1, the coolant inlet 5 and the cathode gas inlet 4 are provided on one side of the membrane electrode frame 7, and the anode gas inlet 1, the cathode gas outlet 4 and the coolant outlet 2 are provided on the other side of the membrane electrode frame 7.
In this embodiment, the membrane electrode frame 7 is provided with an anode gas outlet 1, a coolant outlet 2, a cathode gas inlet 3, a cathode gas outlet 4, a coolant inlet 5, and an anode gas inlet 3, the fuel cell relates to the reaction of gas fuel, the anode and the cathode react with different gases passing through, and at the same time, the fuel cell generates a large amount of heat due to the reaction of the fuel, and needs to be cooled by the coolant, and the membrane electrode frame 7 is provided with the anode gas outlet 1, the coolant outlet 2, the cathode gas inlet 3, the cathode gas outlet 4, the coolant inlet 5, and the anode gas inlet 3, so that the cathode gas, the anode gas, and the coolant can be conveniently introduced, and the mixing of the gases can be avoided.
In a preferred embodiment, the injection molded bead 11 is a unitary piece, as shown in FIG. 2.
In the embodiment, two sides of a membrane electrode frame 7 are provided with corresponding anode sealing injection molding holes 8 and cathode sealing injection molding holes 9, sealing materials are injected into the anode sealing injection molding holes 8 and the cathode sealing injection molding holes 9, sealing rubber strips 11 formed by the anode sealing injection molding holes 8 and the cathode sealing injection molding holes 9 on the two sides are integrated, the integrity and the uniformity of the structures of the sealing rubber strips 11 can ensure that the fuel cell after injection molding has good sealing performance, and the sealing performance of the fuel cell is difficult to ensure in the prior art through a bonding mode.
In a preferred embodiment, the shape of the anodic seal injection molding hole 8 and the cathodic seal injection molding hole 9 comprises a circular or profiled shape.
In this embodiment, the shape of the anode sealing injection hole 8 and the cathode sealing injection hole 9 can be designed arbitrarily, the anode sealing injection hole 8 and the cathode sealing injection hole 9 can be in a circular hole shape, the shape of the injection molding sealing rubber strip 11 can be different from the shape of the anode sealing injection hole 8 and the shape of the cathode sealing injection hole 9 to form the injection molding sealing rubber strip 11 with different shapes, the shape of the injection molding sealing rubber strip 11 is different from that of the cathode sealing injection hole 8, and the sealing performance of the fuel cell can be ensured as long as the anode sealing injection hole 8 and the cathode sealing injection hole 9 are fully filled. The difference in the shape of the injection-molded sealing tape 11 can achieve sufficient and effective sealing for the fuel cell in different situations. The shapes of the anode sealing injection hole 8 and the cathode sealing injection hole 9 are adjusted by adjusting the mold structure of the membrane electrode frame, the shapes of the anode injection sealing hole 8 and the cathode injection sealing hole 9 can be changed by adjusting the mold structure, and the injection sealing rubber strip 11 can form different shapes after the shapes of the anode sealing injection hole 8 and the cathode injection sealing hole 9 are changed, as shown in fig. 6, 7, 8, 9, 10, 11 and 12, and is not limited to the embodiment indicated in the embodiment, and the same injection molding method is adopted for the sealing of the anode sealing injection hole 8 and the cathode sealing injection hole 9 with different shapes.
In a preferred embodiment, the material of the injection molding sealing rubber strip 11 includes ethylene propylene diene monomer rubber and silicone rubber.
In the embodiment, the material of the injection molding sealing rubber strip 11 comprises ethylene propylene diene monomer and silicone rubber, and the silicone rubber and the ethylene propylene diene monomer can be injection molded at low pressure and low temperature, so that the production cost can be reduced. The ethylene propylene diene monomer has excellent aging resistance, good tolerance to temperature, water vapor, water and radiation, and good tolerance to chemicals such as acid and alkali, and thus good sealing performance is always kept in the use process of the fuel cell. The injection molding sealing rubber strip 11 has good tolerance, so that the fuel cell has a long service life, and simultaneously the ethylene propylene diene monomer rubber has good insulation and a wide temperature application range. The silicon rubber has good high temperature resistance and insulativity, and ensures that the fuel cell has good service life and performance.
In a preferred embodiment, the material of the injection molding bead 11 further includes hydrogenated nitrile rubber, fluorine rubber and fluorine silicone rubber.
In this embodiment, the injection molding sealing rubber strip 11 may be made of hydrogenated nitrile rubber, fluororubber, and fluorosilicone rubber, in addition to ethylene propylene diene monomer and silicone rubber, the hydrogenated nitrile rubber has good high temperature resistance and mechanical properties, the fluororubber has the characteristics of high chemical stability, aging resistance, mechanical properties, and small air permeability, the fluorosilicone rubber has the characteristics of low compression deformation, excellent oil resistance and solvent resistance, low and high temperature stability, and good flame resistance and insulation, and the injection molding materials of these materials can ensure good sealing performance of the fuel cell, and ensure the service life and performance of the fuel cell.
Example 2
In embodiment 2, as shown in fig. 4, a fuel cell, a membrane electrode of which includes a membrane electrode and a bipolar plate 10, the bipolar plate 10 is disposed on both sides of the membrane electrode, the bipolar plate 10 is provided with a sealing groove, and the sealing groove is provided with a limit structure 17.
After the relevant parts of the fuel cell are assembled, the fuel cell has a complete structure and comprises a membrane electrode frame 7, a bipolar plate 10, anode carbon paper 14, cathode carbon paper 15 and a proton membrane 16, the injection molding sealing rubber strip 11 can effectively ensure the sealing performance of the whole fuel cell, and the injection molding sealing rubber strip 11 can be simply installed and has simple processes by arranging an anode sealing injection molding hole 8 and a cathode sealing injection molding hole 9 on the membrane electrode frame 7. The injection-molded sealing rubber strip 11 does not need to be bonded separately, but the injection-molded sealing rubber strip 11 is installed as a separate part, so that the installation of the injection-molded sealing rubber strip 11 is simplified. The injection molding sealing rubber strip 11 does not need to be bonded separately, sealing can be realized only by pressing the polar plate, and bonding materials can be saved.
Be provided with anode side seal groove 12 and cathode side seal groove 13 on fuel cell's the polar plate that corresponds, be equipped with limit structure 17 on anode side seal groove 12 and the cathode side seal groove 13, limit structure 17 can effectually prevent to take place the dislocation at the in-process of moulding plastics, guarantees that fuel cell has good sealing performance. In the prior art, because the limit structure 17 does not exist, when the sealing is performed by a bonding mode, deviation is easy to occur in the bonding process, the sealing performance of the fuel cell is influenced, so that gas or liquid leakage is easy to occur in the fuel cell during use, and the service life of the fuel cell is influenced.
Example 3
In example 3, as shown in fig. 13, an assembling method of a fuel cell according to the above-described one of the fuel cells:
s1: arranging the anode sealing injection molding hole and the injection molding sealing hole on the membrane electrode frame of the fuel cell;
s2: bonding the membrane electrode frame, the proton membrane, the anode carbon paper and the cathode carbon paper to form a membrane electrode;
s3: injecting an injection molding sealing material through the anode sealing hole and the cathode sealing hole;
s4: sealing the membrane electrode with the bipolar plate;
s5: the assembled fuel cell is cooled.
The injection molding sealing material can be injected into the anode sealing injection molding hole 8 and the cathode sealing injection molding hole 9 at normal temperature and normal pressure, and comprises ethylene propylene diene monomer, silicon rubber, hydrogenated nitrile rubber, fluororubber, fluorosilicone and other materials, and the materials have the characteristics of low-temperature and low-pressure injection molding, do not need to heat and pressurize the injection molding environment, can realize the injection molding operation at normal temperature, and save the production time and cost.
After the injection molding sealing of the fuel cell is completed, the injection molding sealing material can be molded at normal temperature, so that after the injection molding sealing of the fuel cell is completed, the fuel cell is placed at normal temperature, and the injection molding sealing rubber strip 11 can be solidified and molded, thereby realizing the sealing of the fuel cell.
In a preferred embodiment, in step S1, the membrane electrode rim 7 is cast by injection molding.
In this embodiment, the anode sealing injection hole 8 and the cathode sealing injection hole 9 are formed in the mold of the membrane electrode frame 7, and the shape of the injection hole is adjusted on the mold, so that the shape of the injection sealing rubber strip 11 can be changed, the anode sealing injection hole 8 and the cathode sealing injection hole 9 are directly injected on two sides of the membrane electrode frame 7 during the casting of the membrane electrode frame 7, so that the membrane electrode frame 7 can be ensured to have good structural strength and integrity, and the manufacturing cost can be saved. An anode sealing injection molding hole 8 and a cathode sealing injection molding hole 9 are directly formed in the process of casting the membrane electrode frame 7, and injection molding holes need to be formed in a production mold of the membrane electrode frame 7, so that the formed membrane electrode frame 7 is complete and uniform in structure.
In a preferred embodiment, the membrane electrode and the bipolar plate 10 are sealed by compression in S4.
In this embodiment, realize the sealed of moulding plastics through setting up positive pole sealed hole 8 of moulding plastics and negative pole sealed hole 9 of moulding plastics on membrane electrode frame 7, the joint strip 11 of moulding plastics runs through positive pole and negative pole and is a whole, to the connection between membrane electrode and the bipolar plate 10, just can realize sealedly through the mode that the contact compresses tightly, do not need extra material, be equipped with limit structure 17 respectively on positive pole sealed recess 12 of polar plate and negative pole sealed recess 13 simultaneously, limit structure 17 corresponds with sealed joint strip 11 of moulding plastics, just can guarantee fuel cell's leakproofness, and can not take place the problem of dislocation.
It should be understood that the above-described embodiments are merely exemplary of the present invention, and are not intended to limit the present invention, and that any modification, equivalent replacement, or improvement made without departing from the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides a fuel cell's membrane electrode, includes membrane electrode frame and membrane material, the membrane electrode frame sets up the membrane material both sides, the membrane material includes proton membrane, positive pole carbon paper and negative pole carbon paper, its characterized in that: and an anode injection molding sealing hole and a cathode injection molding sealing hole are formed in the frame of the membrane electrode, wherein an injection molding sealing rubber strip is formed through the anode injection molding hole and the cathode injection molding hole.
2. A membrane electrode assembly for a fuel cell according to claim 1, wherein: the membrane electrode frame further comprises an anode gas outlet, a cooling liquid outlet, a cathode gas inlet, a cathode gas outlet, a cooling liquid inlet and an anode gas inlet, wherein the electrode gas outlet, the cooling liquid inlet and the cathode gas inlet are arranged on one side of the membrane electrode frame, and the anode gas inlet, the cathode gas outlet and the cooling liquid outlet are arranged on the other side of the membrane electrode frame.
3. A membrane electrode assembly for a fuel cell according to claim 1, wherein: the injection molding sealing rubber strip is an integral body.
4. A membrane electrode assembly for a fuel cell according to claim 1, wherein: the shapes of the anode injection molding hole and the cathode injection molding hole comprise circular shapes or special shapes.
5. A membrane electrode assembly for a fuel cell according to claim 3, wherein: the injection molding sealing rubber strip is made of ethylene propylene diene monomer rubber and silicone rubber.
6. The membrane electrode assembly for a fuel cell according to claim 5, wherein: the injection molding sealing rubber strip is made of hydrogenated nitrile rubber, fluororubber and fluorosilicone rubber.
7. A fuel cell, a membrane electrode of the fuel cell according to any one of claims 1 to 6, comprising the membrane electrode and a bipolar plate, wherein the bipolar plate is arranged at two sides of the membrane electrode, and the bipolar plate is provided with a sealing groove, characterized in that: and the sealing groove is provided with a limiting structure.
8. A fuel cell assembly method according to claim 6, characterized in that:
s1: arranging the anode sealing injection molding hole and the injection molding sealing hole on the membrane electrode frame of the fuel cell;
s2: bonding the membrane electrode frame, the proton membrane, the anode carbon paper and the cathode carbon paper to form the membrane electrode;
s3: injecting the injection molding sealing material through the anode sealing hole and the cathode sealing hole at normal temperature and normal pressure;
s4: sealing the membrane electrode with the bipolar plate;
s5: and cooling the assembled fuel cell at normal temperature and normal pressure.
9. A method of assembling a fuel cell according to claim 8, wherein: in S1, the membrane electrode frame is cast by injection molding.
10. A method of assembling a fuel cell according to claim 8, wherein: in S4, the membrane electrode and the bipolar plate are sealed by compression.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111451067.3A CN114300703A (en) | 2021-12-01 | 2021-12-01 | Membrane electrode for a fuel cell, fuel cell and method for assembling a fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111451067.3A CN114300703A (en) | 2021-12-01 | 2021-12-01 | Membrane electrode for a fuel cell, fuel cell and method for assembling a fuel cell |
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| Publication Number | Publication Date |
|---|---|
| CN114300703A true CN114300703A (en) | 2022-04-08 |
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ID=80965299
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111451067.3A Pending CN114300703A (en) | 2021-12-01 | 2021-12-01 | Membrane electrode for a fuel cell, fuel cell and method for assembling a fuel cell |
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| Country | Link |
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| CN (1) | CN114300703A (en) |
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2021
- 2021-12-01 CN CN202111451067.3A patent/CN114300703A/en active Pending
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