KR20170026771A - Gasket-integrated matal separator for fuel cell - Google Patents

Abstract

According to the present invention, provided is a gasket-integrated metal separator for a fuel cell capable of reducing the amount of used rubber seal and thus reducing the material cost and the work process by forming protrusions and grooves on an anode separator plate and a cathode separator plate such that the upper and lower surfaces are assembled together, thereby preventing the leaning phenomenon during the working process. The gasket integrated metal separator for a fuel cell includes a plurality of repeatedly stacked unit cells, and an MEA, an anode separator plate, and a cathode separator plate are stacked in order in the unit cell. An anode gasket protrusion or an anode gasket groove is formed on one surface or both surfaces of the anode separator plate, and a cathode gasket protrusion or a cathode gasket groove is formed on one or both surfaces of the cathode separator plate to correspond to the anode separator plate, thereby allowing the anode separator plate and the cathode separator plate to be stacked.

Description

TECHNICAL FIELD [0001] The present invention relates to a gasket integral metal separator for a fuel cell,

The present invention relates to a gasket integral type metal separator for a fuel cell, and more particularly, to a gasket integrated metal separator for a fuel cell, which is capable of improving assembling performance and preventing leaning during stacking by improving a plurality of unit cell lamination structures constituting a stack of fuel cells To a gasket integral metal separator for a fuel cell.

Generally, a fuel cell is a device that generates energy by dispersing the oxygen chemical reaction energy in the air and hydrogen extracted from the fuel into electrical energy. The fuel cell is different from the battery in that it does not require recharging, As long as it can produce electricity continuously.

Therefore, fuel cells are attracting attention as next generation power sources to replace current internal combustion engines in all industries as environmentally friendly power sources.

Among them, PEMFC (Polymer Electrolyte Membrane Fuel Cell) is a fuel cell using a polymer membrane having a cation exchange property as an electrolyte. It is a solid polymer electrolyte fuel cell (SPEFC), a cation exchange membrane fuel cell (PEMFC, Proton Exchange Membrane Fuel Cells). In addition, the polymer electrolyte fuel cell has a low operating temperature of about 80 ° C, high efficiency, high current density and high output density, short start-up time, and quick response in response to load change, as compared with other types of fuel cells. Particularly, since the polymer membrane is used as the electrolyte, it does not need to be subjected to corrosion and electrolyte control, and is less sensitive to changes in the pressure of the reaction gas. The polymer electrolyte fuel cell can be applied to a wide variety of fields such as the power source of pollution-free vehicles, locally installed power generation, mobile power supply, and military power supply, because it is simple in design, easy to manufacture and has a wide range of output power. Therefore, active research is currently underway in the automotive industry worldwide.

Such a fuel cell generates electric power by using an oxidation reaction at the anode and a reduction reaction at the cathode. A catalyst layer is formed on the anode / cathode to promote the oxidation and reduction reaction. Hydrogen is supplied to the anode and is separated into hydrogen ions and electrons through the oxidation reaction. In the cathode, the separated hydrogen ions and oxygen combine to form water Respectively.

In general, a single fuel cell stack is formed by stacking a plurality of unit cells (approximately 400 units).

The fuel cell stack is composed of a membrane electrode assembly (MEA) with an electrode / catalyst layer on both sides of the membrane, with an electrolyte membrane on which hydrogen ions migrate, and an electrode / catalyst layer on both sides of the membrane. A gas diffusion layer (GDL), a gasket and a fastening mechanism for maintaining the airtightness and proper tightening pressure of the reaction gases and the cooling water, and a separation plate through which the reaction gases and the cooling water move.

In the solid polymer electrolyte fuel cell, hydrogen is supplied to the fuel electrode and oxygen (air) is supplied to the air electrode.

Hydrogen supplied to the fuel electrode is decomposed into hydrogen ions (Proton, H +) and electrons (Electron, e) by the catalyst of the electrode layer formed on both sides of the electrolyte membrane. Only hydrogen ions (Proton, H +) are selectively converted into cation exchange membranes And the electrons (e, e) are transferred to the cathode through the gas diffusion layer, which is a conductor, and a separator.

In the air electrode, hydrogen ions supplied through the electrolyte membrane and electrons transferred through the separator meet with oxygen in the air supplied to the air electrode by the air supplier to generate water.

At this time, a current is generated by the flow of electrons through an external lead generated due to the movement of the hydrogen ions, and the heat is incidentally generated in the water production reaction.

A bipolar plate or separator used in a polymer electrolyte fuel cell separates each unit cell when stacking fuel cells, serves as a support for a membrane electrode assembly (MEA) (current collector).

In order to minimize the voltage loss, the separator needs to have a good electrical conductivity, a low gas permeability so as to prevent the supplied gas from being transmitted, a low density and light weight, a sufficient mechanical strength, It must have good corrosion resistance, be a material that is easy to process, and have a low manufacturing cost.

The separator plate is again bonded to the gas diffusion layer (GDL) bonded to the outside of the MEA. The separator not only supplies fuel and air, but also functions as a water supply passage on the fuel electrode side and a water removal cylinder on the air electrode side. It also serves to discharge electricity to the external circuit.

FIG. 1A is a schematic view showing a unit cell structure of a fuel cell stack according to the prior art, in which unit cells are stacked in this order from the bottom to the MEA 10, the anode separation plate 20 and the cathode separation plate 30, The MEA 10 is repeatedly stacked on the cathode separator 30 in the stacked unit cells.

Here, the anode separator plate 20 has gasket protrusions 20a formed on both sides in view of the characteristics of the metal gasket integral gasket, and the cathode separator plate 30 has gasket protrusions 30a formed on one surface thereof.

Air is supplied to the cathode separator 30 to be transmitted to the air electrode of the MEA 10, a cooling water passage is formed at the center of the anode separator plate 20, cooling water is supplied through the cooling water passage, 10) to prevent the stack from being heated above the critical temperature.

Hydrogen as fuel is supplied to the space between the anode separator plate 20 and the MEA 10 and transferred to the MEA 10.

1B, a sub gasket 12 attached to the edge of the MEA 10 to secure the airtightness of hydrogen, air, and cooling water during stack fabrication, and a sub gasket 12 attached to the edge of the MEA 10 and the anode separator plate 20 and the cathode separator plate 30 And the rubber seals 40 (rubber seals) are injected / cured on the edge portions to join them.

The rubber seal 40 is joined to the sub gasket 12 attached on the same side of the MEA 10 and the rubber seal 40 is bonded to the edge of the anode separator 20, (40) is bonded to the edge portion of the cathode separation plate (30).

At this time, the rubber seal 40 secures the airtightness of the hydrogen, the air and the cooling water as well as the sealing between the anode separator plate 20 and the cathode separator plate 30 and between the sub gasket 12 and the anode separator plate 20. [ Or the cathode separation plate 12 while adjusting the distance between the anode separation plate 20 and the cathode separation plate 12. [

The MEA 10, the anode separator plate 20 and the cathode separator plate 30, each having the rubber seal 40 attached thereto, are stacked in this order to form one unit cell. .

At this time, the gasket protrusions 20a of the anode separator plate 20 and the gasket protrusions 30a of the cathode separator plate 30 must be in surface contact with each other when the stack is stacked.

However, when the total of about 400 MEAs 10, the anode separator plate 20, and the cathode separator plate 30 are laminated in total about 1,200 times, as shown in FIG. 1C, The rubber seals 40 of the anode separator 20 and the rubber seals 40 of the cathode separator 30 are shifted from each other and the fuel cell stack can not obtain a desired output There is a problem.

Further, the collapsing phenomenon may occur due to insufficient mechanical strength when the rubber seal 40 is bonded to the metal separator plate having a thickness of 0.1 mm to 0.3 mm.

The rubber seal 40 used for securing the airtightness of the hydrogen and the air and the cooling water is formed by using a high-unit cost fluorocarbon rubber (FKM) or the like to excessively invest in the material cost and the bonding facility in the production of the fuel cell stack. There is a problem that it is not suitable for mass production.

Regarding the lamination of the gasket for a separator plate-integrated type fuel cell, Korean Patent Laid-Open No. 10-2009-0128602 (published on December 16, 2009), which is a prior document requested by the present applicant, There were disadvantages that were not effective.

SUMMARY OF THE INVENTION The present invention has been conceived to solve the above-mentioned problems, and it is an object of the present invention to provide a fuel cell stack in which a plurality of fuel cells are stacked and assembled, The present invention provides a gasket integral metal separator for a fuel cell capable of preventing a sticking phenomenon during a working process of a stack by forming a gasket projection and a gasket groove in the plate and reducing a material cost and a work process by reducing the amount of rubber seal used, .

According to an aspect of the present invention, there is provided a gasket integral metal separator for a fuel cell, wherein unit cells are repeatedly laminated in order from the bottom to the MEA, the anode separator, and the cathode separator, Cathode gasket protrusions and / or anode gasket grooves are formed, and cathode gasket protrusions and / or cathode gasket grooves are formed on one surface and / or both surfaces of the cathode separator plate so as to be compatible with the anode separator plate and laminated. Gasket integral metal separator for fuel cell.

Preferably, the anode gasket protrusions and / or the anode gasket grooves formed on one surface and / or both surfaces of the anode separator plate and the cathode gasket protrusions and / or the cathode gasket grooves formed on one surface and / It may be inclined or rounded.

In one embodiment, an anode gasket protrusion is formed on one surface of the anode separator facing the MEA, a coupling hole is formed in the MEA to allow the anode gasket protrusion to pass therethrough, and an anode gasket protrusion is formed on the upper surface of the cathode separator plate The cathode gasket groove may be formed.

In another embodiment, an anode gasket groove is formed on one surface of the anode separator facing the MEA, and a cathode gasket protrusion of a corresponding shape is formed on an upper surface of the cathode separator to be assembled into an anode gasket groove. And a coupling hole may be formed so that the cathode gasket projection passes therethrough.

In another embodiment, the anode gasket protrusion is formed on one surface of the anode separator plate facing the cathode separator plate, the gasket is formed on both surfaces of the cathode separator plate, and when the anode gasket protrusion is cooperatively assembled, A cathode gasket groove can be formed.

According to another embodiment of the present invention, an anode gasket protrusion protruding on both sides is formed in the anode separator, a coupling hole is formed in the MEA so that the anode gasket protrusion passes through the cathode separator, a gasket is formed on both surfaces of the cathode separator, A cathode gasket groove having a shape corresponding to both surfaces can be formed.

In another embodiment, the stepped anode gasket groove is formed on one surface of the anode separator facing the MEA, the inclined surface is formed on the MEA so that the anode gasket groove is positioned, and the cathode separator plate is formed to be assembled and assembled into the anode gasket groove. Only a cathode gasket projection may be formed on the upper surface.

In another embodiment, a stepped anode gasket projection is formed on one surface of the anode separation plate facing the MEA, an inclined surface is formed on the MEA to locate the anode gasket projection, and an anode gasket projection is formed on the upper surface of the cathode separation plate. A stepped cathode gasket groove may be formed so as to be assembled.

In another embodiment, a stepped anode gasket projection is formed on one side of the anode separation plate toward the casted separator, a gasket is formed on both sides of the cathode separation plate, and the cathode gasket is protruded to the lower surface, So that a stepped cathode gasket groove can be formed.

According to another embodiment of the present invention, an anode gasket protrusion is formed on an upper surface of the anode separator, a stepped anode gasket groove is formed on a lower surface of the anode separator, an inclined surface is formed on the MEA to locate an anode gasket groove, Only the cathode gasket protrusions may be formed on both sides so as to fit the anode gasket protrusions and the anode gasket grooves.

The gasket integral metal separator for a fuel cell according to the present invention may have the following effects.

1. By forming gasket projections and gasket grooves on the anode separator plate and the cathode separator plate and assembling them together, it is possible to prevent the sticking phenomenon during the working process of the stack and reduce the material cost and work process by reducing the amount of rubber seal It is effective.

2. It is possible to apply various shapes according to the assembling method and product characteristics, such as a shape that gives a projection or a groove to the double-sided gasket of the anode separator and a shape that gives a projection or a groove to the gasket of one side of the cathode separator.

3. The formation of gasket projections and gasket grooves in the anode separator plate and the cathode separator plate can be applied to all or part of the gasket and can be installed in a position favorable for stacking in the longitudinal or transverse direction .

4. In the shape of gasket protrusions and gasket grooves on the anode separator plate and the cathode separator plate, there is a gap between the width of the protrusions and the width of the grooves so as to absorb the deviation due to gasket molding and thermal deformation of the metal separator plate. There is an effect.

5. The shape of the gasket protrusion and the gasket groove in the anode separator plate and the cathode separator plate has a gradient or a chamfer or a round shape so as to be easy to assemble, so that the upper and lower surfaces can be assembled smoothly.

6. The protrusions and grooves formed in the anode separator plate and the cathode separator plate have the effect of maximizing the efficiency in installing the rubber seal in the stacking by setting the heights and the depths of the grooves differently according to the characteristics of the gasket.

7. Conventionally, in the structure of the metal gasket integral type gasket, the fixing projection has to be provided in order to prevent the separation plate of the thin plate from bending during molding of the gasket. However, the application of the gasket projection or groove of the present invention does not require a fixing projection And further, it is easy to mold the protrusions and grooves.

FIGS. 1A, 1B and 1C are schematic views showing a unit cell structure of a fuel cell stack according to the prior art,
FIGS. 2A, 2B and 2C show a first embodiment of the lamination structure of the gasket integral metal separator for a fuel cell according to the present invention,
3A, 3B and 3C show a second embodiment of the lamination structure of the gasket integral metal separator for a fuel cell according to the present invention,
4A, 4B and 4C show a third embodiment of the lamination structure of the gasket integral metal separator for a fuel cell according to the present invention,
5A, 5B, and 5C show a fourth embodiment of the lamination structure of the gasket integral metal separator for a fuel cell according to the present invention,
6A, 6B and 6C show a fifth embodiment of the lamination structure of the gasket integral metal separator for a fuel cell according to the present invention,
7A, 7B and 7C show a sixth embodiment of the lamination structure of the gasket integral metal separator for a fuel cell according to the present invention,
8A, 8B and 8C show a seventh embodiment of the lamination structure of the gasket integrated metal separator for a fuel cell according to the present invention,
9A, 9B, and 9C are eighth embodiments of a lamination structure of a gasket integral metal separator for a fuel cell according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a gasket integrated metal separator for a fuel cell according to the present invention will be described in detail with reference to the accompanying drawings.

3A, 3B and 3C are cross-sectional views illustrating a laminated structure of a gasket integral metal separator for a fuel cell according to the present invention, FIGS. 4A, 4B and 4C show a third embodiment of the lamination structure of the gasket integrated metal separator for a fuel cell according to the present invention, FIGS. 5A, 5B and 5C are cross- FIGS. 6A, 6B and 6C show a fifth embodiment of the lamination structure of the gasket integrated metal separator for a fuel cell according to the present invention, FIGS. 7A, 7B, 8A, 8B and 8C show a seventh embodiment of the lamination structure of the gasket integrated metal separator for a fuel cell according to the present invention, FIGS. 9A, 9b and 9c are cross-sectional views of the gasket for a fuel cell according to the present invention Body is the eighth embodiment of the multilayer structure of the metal separator.

The fuel cell stack may be constituted by approximately 400 unit cells, and one unit cell may be stacked in the order of the MEA 100, the anode separation plate 200, and the cathode separation plate 300.

The metal separator is a metal thin plate. Air is supplied to the cathode separator plate 300 and is transmitted to the air electrode of the MEA 100. A cooling water passage is formed at the center of the anode separator plate 200. Through the cooling water passage Cooling water is supplied to heat exchange in the MEA 100 to prevent the stack from being heated above the critical temperature.

Hydrogen as fuel is supplied to the space between the anode separator 200 and the MEA 100 and is transferred to the MEA 100.

1B) attached to the edge of the MEA 100 to secure the airtightness of hydrogen, air, and cooling water in the stack fabrication, and a sub gasket 12 (shown in FIG. 1B) attached to the edge of the MEA 100 and an anode separator plate 200 and a cathode separator plate 300, A rubber seal 40 (shown in FIG. 1B) may be jointed to each of the edge portions of the base body by injection / curing.

The rubber seal 40 is bonded to the edge portion of the MEA 100 and the rubber seal 40 is bonded to the edge of the anode separator 200 and the rubber seal 40 40 are bonded to the edge portions of the cathode separation plate 300.

At this time, the rubber seal 40 not only secures the airtightness of the hydrogen, the air and the cooling water, but also secures the airtightness between the anode separator plate 200 and the cathode separator plate 300 and between the sub gasket 12 and the anode separator plate 200 And serves to support the ends of the anode separation plate 200 and the cathode separation plate 300 while adjusting the distance between the cathode separation plates 300.

According to an embodiment of the present invention, an anode gasket protrusion and / or an anode gasket groove are formed on one surface and / or both surfaces of the anode separator 200, and the anode separator 200 and the anode separator 200 are formed to correspond to each other A cathode gasket projection or a cathode gasket groove may be formed on one surface and / or both surfaces of the cathode separator plate 300.

In order to prevent the anode separation plate 200 and the cathode separation plate 300 from being sagged during stacking, embodiments will be described with reference to the drawings.

[Example 1]

2A, in the gasket integrated metal separator for a fuel cell according to the present invention, an anode gasket projection 201 is formed on one surface of the anode separator 200 where gaskets are formed on both sides, facing the MEA 100 The MEA 100 may be formed with a coupling hole 101 of a predetermined size to allow the anode gasket projection 201 to pass therethrough.

Here, it is preferable that the coupling hole 101 is larger than the size of the anode gasket projection 201. That is, the margin deviation can be formed through the coupling hole 101.

A gasket is formed on the upper surface of the cathode separator 300 and a cathode gasket groove 301 having a shape corresponding to that of the anode gasket projection 201 may be formed at the center.

The cathode gasket groove 301 preferably has a structure in which an anode separator 200 forming the anode gasket protrusion 201 mainly seals and serves as an auxiliary seal in the cathode separator plate 300, The height of the anode gasket protrusion 201 may be higher than the height of the cathode separator plate 300 to increase the surface pressure of the cathode gasket plate.

As shown in FIGS. 2B and 2C, the anode gasket protrusion 201 and the cathode gasket groove 301 may be formed to have a sloped surface or a rounded surface corresponding to the anode gasket protrusion 201 and the cathode gasket groove 301, respectively.

[Example 2]

3A, an anode gasket groove 202 is formed at a predetermined depth in a central portion of the anode separator 200 facing the MEA 100, and a cathode On the upper surface of the separator plate 300, a cathode gasket protrusion 302 having a shape corresponding to the anode gasket groove 202 may be formed at the center.

The MEA 100 may be formed with a coupling hole 102 having a predetermined size to allow the cathode gasket projection 302 to pass therethrough.

It is preferable that the coupling hole 102 is larger than the size of the cathode gasket projection 302.

The height of the cathode gasket protrusion 302 may be higher than the height of the anode separator plate 200 to increase the surface pressure of the anode gasket groove 202 .

The anode gasket groove 202 is formed on the lower surface of the anode separator 200 and the cathode gasket protrusion 302 is formed on the cathode separator plate 300 which is relatively easy to be formed, The deforming problem of the separating plate which may occur during the gasket molding is brought into contact with the mold, so that not only the assembling property but also the moldability of the metal separating plate integrated gasket can be improved.

Meanwhile, as shown in FIGS. 3B and 3C, the anode gasket groove 202 and the cathode gasket protrusion 302 may be formed to have a sloped surface or a rounded surface corresponding to the anode gasket groove 202 and the cathode gasket protrusion 302, respectively.

[Example 3]

4A, the anode gasket protrusion 203 is formed at the center of the anode separator plate 200 facing the cathode separator plate 300, that is, on the upper surface thereof, When the gasket is formed on both sides of the cathode separator plate 300 and the anode gasket protrusion 203 is assembled and assembled, the cathode gasket groove 303 having a corresponding shape can be formed at the center.

And preferably the cathode gasket groove 303 may be wider than the anode gasket projection 203.

Here, stacking can be performed without machining or deforming the MEA 100, and the cathode gasket groove 303 and the anode gasket projection 203 are in direct contact with each other, so that molding can be performed without deformation.

Meanwhile, as shown in FIGS. 4B and 4C, the anode gasket protrusion 203 and the cathode gasket groove 303 may be formed to have a sloped surface or a rounded surface corresponding to the anode gasket protrusion 203 and the cathode gasket groove 303, respectively.

[Example 4]

5A, an anode gasket protrusion 204 protruding on both sides is formed at the center of the anode separator 200 having a gasket formed on both sides thereof, and an anode gasket protrusion 204 And the MEA 100 may be formed with a coupling hole 104 through which the anode gasket projection 204 passes.

Here, it is preferable that the engaging hole 104 is larger than the size of the anode gasket projection 204.

A cathode gasket groove 304 having a shape corresponding to both sides of the cathode gasket groove 300 may be formed at the center so that the anode gasket protrusion 204 and the cathode separator plate 300 are assembled and assembled together.

The cathode gasket groove 304 is formed in the anode separator plate 200 forming the anode gasket protrusion 204 and serves as an auxiliary seal in the cathode separator plate 300. The cathode gasket groove 304 has an anode gasket projection 204 The height of the anode gasket protrusion 204 formed on the lower surface of the anode separator 200 may be higher than the height of the cathode separator plate 300 to increase the surface pressure of the cathode separator plate 300.

On the other hand, as shown in FIGS. 5B and 5C, the anode gasket protrusion 204 and the cathode gasket groove 304 may be formed to have a sloped surface or a rounded surface corresponding to the anode gasket protrusion 204 and the cathode gasket groove 304, respectively.

[Example 5]

6A, a stepped anode gasket groove 205 is formed in a gasket having a "?" Shape on one surface thereof facing the MEA 100 in an anode separation plate 200 having gaskets formed on both sides thereof, And an inclined surface 105 is formed on the MEA 100 so that the anode gasket groove 205 is positioned on a horizontal plate to form a stepped horizontal surface.

Further, only the cathode gasket protrusion 305 may be formed on the upper surface of the cathode separator 300 so as to be assembled to the anode gasket groove 205.

Preferably, the metal separator integrated gasket can be applied to a design in which the width of the gasket is narrow and the formation of protrusions and grooves is difficult, and the assemblability can be improved by a combined structure.

Meanwhile, as shown in FIGS. 6B and 6C, the cathode gasket protrusion 305 and the anode gasket groove 205 may be formed to have a sloped surface or a rounded surface to correspond to each other.

[Example 6]

7A, a stepped anode gasket projection 206 is formed on a gasket having a shape of "┐" on one side facing the MEA 100 in an anode separator plate 200 having gaskets formed on both sides thereof, And an inclined surface 106 is formed in the MEA 100 so that the anode gasket projection 206 is positioned on a horizontal plate to form a stepped horizontal surface.

The cathode separator plate 300 may be formed with a stepped cathode gasket groove 306 so as to be assembled to the anode gasket protrusion 206 on the upper surface of the gasket.

Preferably, the assembled structure is improved in the assembled structure, and the contact area with the MEA 100 is increased through the anode separator 200 and the stepped anode gasket projection 206, so that the moldability of the gasket can be improved .

As shown in FIGS. 7B and 7C, the anode gasket protrusion 206 and the cathode gasket groove 306 may be formed with a sloped surface or a rounded surface corresponding to the anode gasket protrusion 206 and the cathode gasket groove 306, respectively.

[Example 7]

As shown in FIG. 8A, in the seventh embodiment, a gasket-shaped upper surface of the anode separator 200 facing the casted separator 300, that is, an inverted " The anode gasket protrusions 207 are formed on both sides of the cathode separator plate 300 so that the gaskets are formed in a shape of " Grooves 307 may be formed.

Preferably, the structure is improved in the assembling structure and the stacking is possible without deformation of the MEA 100.

As shown in FIGS. 8B and 8C, the anode gasket protrusions 207 and the cathode gasket grooves 307 may be formed to have a sloped surface or a rounded surface corresponding to the anode gasket protrusions 207 and the cathode gasket grooves 307, respectively.

[Example 8]

In the eighth embodiment, as shown in FIG. 9A, only the anode gasket protrusion 208a is formed on the upper surface of the anode separator 200 having gaskets formed on both surfaces thereof, and a stepped anode gasket groove 208b is formed on the lower surface thereof And an inclined surface 108 is formed on the MEA 100 so that the anode gasket groove 208b is positioned on a horizontal plate to form a stepped horizontal surface.

Only the cathode gasket protrusions 308 may protrude from the cathode gasket protrusions 208a and the anode gasket grooves 208b on both sides of the casted separator plate 300 with a predetermined size.

Preferably, the gaskets are protruded, so that the sticking phenomenon can be fundamentally cut off when assembling the stat.

The anode gasket protrusion 208a, the anode gasket groove 208b, and the cathode gasket protrusion 308 may be formed with a sloped surface or a rounded surface to correspond to the anode gasket protrusion 208a and the cathode gasket protrusion 308, as shown in FIGS. 9b and 9c.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.

100: MEA 200: anode separator plate
300: cathode separator plate

Claims (10)

Wherein the unit cells are repeatedly laminated from below in the order of the MEA (100), the anode separation plate (200), and the cathode separation plate (300)
An anode gasket protrusion and / or an anode gasket groove are formed on one surface and / or both surfaces of the anode separator plate 200,
Characterized in that a cathode gasket projection and / or a cathode gasket recess are formed on one surface and / or both surfaces of the cathode separator plate (300) correspondingly so as to be laminated with the anode separator plate (200) Metal separator plates.
The method according to claim 1,
Anode gasket protrusions and / or anode gasket grooves formed on one surface and / or both surfaces of the anode separator 200,
In the cathode gasket protrusions and / or the cathode gasket grooves formed on one surface and / or both surfaces of the cathode separator plate 300,
Wherein the gasket is formed in a round shape.
The method according to claim 1,
An anode gasket projection 201 is formed on one surface of the anode separator 200 facing the MEA 100,
The MEA 100 is formed with a coupling hole 101 through which the anode gasket projection 201 passes,
Wherein a cathode gasket groove (301) having a shape corresponding to that of the anode gasket projection (201) is formed on an upper surface of the cathode separator plate (300).
The method according to claim 1,
An anode gasket groove (202) is formed on one surface of the anode separator (200) facing the MEA (100)
A cathode gasket protrusion 302 having a shape corresponding to that of the anode gasket groove 202 is formed on an upper surface of the cathode separator 300,
Wherein the MEA (100) is formed with a coupling hole (102) to allow the cathode gasket projection (302) to pass through the gasket integrated metal plate for a fuel cell.
The method according to claim 1,
An anode gasket protrusion 203 is formed on one surface of the anode separator 200 facing the cathode separator plate 300,
Wherein a gasket is formed on both sides of the cathode separator plate and a cathode gasket groove (303) of a corresponding shape is formed when the anode gasket protrusion (203) is assembled and assembled together. Separation plate.
The method according to claim 1,
The anode separator 200 is formed with anode gasket protrusions 204 projecting on both sides,
A coupling hole 104 is formed in the MEA 100 to allow the anode gasket projection 204 to pass therethrough,
A gasket integral type gasket for a fuel cell, comprising: a cathode gasket groove (304) formed on both sides of the cathode separator plate (300) and having a shape corresponding to both surfaces of the anode gasket protrusion (204) Separation plate.
The method according to claim 1,
A stepped anode gasket groove 205 is formed on one side of the anode separator 200 facing the MEA 100,
The MEA 100 is formed with an inclined surface 105 in which the anode gasket groove 205 is located,
Wherein the cathode separator plate (300) is formed with only a cathode gasket projection (305) on the upper surface thereof so as to be assembled with the anode gasket groove (205).
The method according to claim 1,
A stepped anode gasket projection 206 is formed on one surface of the anode separator 200 facing the MEA 100,
An inclined surface 106 is formed in the MEA 100 to position the anode gasket projection 206,
Wherein a cathode gasket groove (306) is formed on an upper surface of the cathode separator plate (300) so as to be assembled with the anode gasket protrusion (206).
The method according to claim 1,
A stepped anode gasket protrusion 207 is formed on one side of the anode separator 200 facing the casted separator plate 300,
Wherein a gasket is formed on both sides of the cathode separator plate and a stepped cathode gasket groove (307) is formed so that the cathode gasket groove (307) is stepped down to be assembled to the anode gasket projection (207) Separation plate.
The method according to claim 1,
An anode gasket protrusion 208a is formed on the upper surface of the anode separator 200, a stepped anode gasket groove 208b is formed on a lower surface of the anode separator plate 200,
An inclined surface 108 is formed in the MEA 100 to locate the anode gasket groove 208b,
Wherein a cathode gasket projection (308) is formed on both sides of the casted separator plate (300) to match the anode gasket projection (208a) and the anode gasket groove (280b) .

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