KR100708343B1 - Solid Polymer Electrolyte Fuel Cell - Google Patents

Abstract

The present invention relates to a solid polymer electrolyte fuel cell in which an end plate and a membrane electrode assembly (MEA) have a corresponding size, and the end plate and the membrane electrode assembly are assembled by a coupling means penetrating them.

A solid polymer electrolyte fuel cell according to the present invention includes at least one membrane electrode assembly 200 which generates a voltage by reacting fuel and air; An electrode plate 300 provided outside the membrane electrode assembly 200 to guide the flow of voltage generated in the membrane electrode assembly 200; A pair of end plates provided outside the membrane electrode assembly 200 to protect the membrane electrode assembly 200 and to form an appearance; An insulating plate 400 provided between the end plate 100 and the electrode plate 300 to block a voltage moving along the electrode plate 300 from being transferred to the end plate 100; The membrane electrode assembly 200 to the insulating plate 400 is fastened in a state of being inserted into the cooling water flow path 110 to guide the flow direction of the cooling water between the insulating film 400 so that the membrane electrode assembly 200 to the insulating plate 400 is not separated from each other. Combining means (500) to comprise. According to the present invention, since the volume is remarkably small, many fuel cells can be accommodated in a limited space.

Fuel cell, coupling means, end plate, electrode, through

Description

A polymer electrolyte membrane type fuel cell

1 is a longitudinal sectional view showing an internal coupling structure of a fuel cell according to the prior art;

Figure 2 is a perspective view showing the front appearance configuration of a solid polymer electrolyte fuel cell according to the present invention.

Figure 3 is a perspective view showing the rear appearance configuration of a solid polymer electrolyte fuel cell according to the present invention.

Figure 4 is an exploded perspective view showing the configuration of a solid polymer electrolyte fuel cell according to the present invention.

5 is an exploded perspective view of a coupling means which is a main component of a solid polymer electrolyte fuel cell according to the present invention;

FIG. 6 is a longitudinal sectional view taken along the line II ′ of FIG. 5; FIG.

FIG. 7 is a longitudinal sectional view taken along the line II-II 'of FIG. 3; FIG.

8A is an enlarged view of a portion 'A' of FIG. 7.

8B is an enlarged view of a 'B' portion of FIG. 7.

Explanation of symbols on the main parts of the drawings

100. End plate 110. Coolant flow path

120. Recessed part 122. Fuel entry connector

123. Fuel outlet connector 124. Air inlet connector

125. Air outlet connector 200. Membrane electrode assembly

300. Electrode plate 400. Insulation plate

500. Coupling means 520. Cooling water import and export port

522. Flow pipes 523. Through-holes

524. Coupling section 525. First O-ring groove

526. Fasteners 528. Female thread

540. Insulation port 542. Second O-ring groove

550. Through thread 560. Blocking tube

562. Crimp 580. Nut

582. Spring Washers 584. Insulation Washers

586. Sealing washer 587. Pressure generating groove

 R. O-ring

The present invention relates to a solid polymer electrolyte fuel cell, and more particularly, an end plate and a membrane electrode assembly (MEA) have a corresponding size, and the end plate and the membrane electrode assembly are connected to a coupling means penetrating them. It relates to a solid polymer electrolyte fuel cell assembled by.

A fuel cell is a system that generates electricity through the reaction of hydrogen fuel and oxygen, and at the same time generates water and heat as a by-product.

In addition, a polymer electrolyte membrane fuel cell (PEMFC), a direct methanol fuel cell (DMFC), a phosphoric acid fuel cell (PAFC), a molten carbonate fuel cell (MCFC), a solid oxide fuel cell (SOFC), etc., depending on the type of electrolyte used. There is this.

Among these types of fuel cells, PEMFC, PAFC, and DMFC have low operating temperatures of 80 ℃ -120 ℃, 190 ℃ -200 ℃, and 25 ℃ -90 ℃, respectively. It is likely to be utilized.

Therefore, in order to accelerate and expand the commercialization of these fuel cells, research interests are focused on miniaturization, light weight, and low cost of the entire fuel cell system.

Hereinafter, a conventional fuel cell configuration will be described with reference to the accompanying drawings.

1 is a longitudinal sectional view showing an internal coupling structure of a fuel cell according to the prior art.

As shown in the figure, the fuel cell 1 is provided with a plurality of membrane electrode assemblies (MEA: Membrane Electrode Assembly) (MEA) therein, the membrane electrode assembly (10) in the upright state in the left / right direction Are stacked and placed.

In the membrane electrode assembly 10, the anode electrode 14 and the cathode electrode 16 are disposed at both sides with the membrane 12 as the center. That is, the membrane electrode assembly 10 includes a membrane 12, an anode electrode 14, and a cathode electrode 16.

A flow path 18 is formed in the anode electrode 14 and the cathode electrode 16 so that hydrogen, etc., as a fuel of the fuel cell 1 can flow, and the plurality of membrane electrode assemblies 10 are stacked on each other. The flow paths 18 communicate with each other.

End plates 20 are provided on left and right sides of the fuel cell 1. The end plate 20 serves to form an appearance of the fuel cell 1 and to provide a bonding force so that the plurality of membrane electrode assemblies 10 are not separated.

To this end, the end plate 20 is formed to have an area larger than that of the membrane electrode assembly 10, and the upper and lower ends of the end plate 20 are positioned up and down than the upper and lower ends of the membrane electrode assembly 10. It protrudes.

In addition, a fastening hole 22 is formed through the upper and lower portions of the end plate 20. The fastening bolts 24 pass through the fastening holes 22 and are tightened with nuts 26. The fastening force of the fastening bolts 24 and the nuts 26 is the end plate 20 and the membrane electrode assembly 10. The plurality of membrane electrode assemblies 10 are maintained as shown in FIG. 1 without being separated from each other.

However, the fuel cell 1 having the above configuration has the following problems.

That is, the fuel cell 1 is formed such that the end plate 20 has a larger area than the membrane electrode assembly 10, so that the size of the fuel cell 1 is determined by the size of the end plate 20.

Therefore, the size of the fuel cell 1 is unnecessarily large, and thus, it is impossible to accommodate many fuel cells 1 in a limited space, thereby causing a problem in that the output of the fuel cell 1 is lowered.

In addition, since a plurality of fastening bolts 24 (four in the related art shown in FIG. 1) should be provided in one fuel cell 1, there is a problem in that assembly time is increased and productivity is lowered.

In addition, since the cost of the material increases because the size of the end plate 20 is increased, the price competitiveness is lowered.

An object of the present invention for solving the above problems is to configure the size of the end plate and the membrane electrode assembly so that more solid polymer electrolyte fuel cells can be accommodated in a limited space while reducing manufacturing costs. The present invention provides a solid polymer electrolyte fuel cell.

Another object of the present invention is to provide a solid polymer electrolyte fuel cell in which an end plate and a membrane electrode assembly are joined by a coupling means that simultaneously penetrates the end plate and the membrane electrode assembly.

According to an aspect of the present invention, there is provided a solid polymer electrolyte fuel cell comprising: at least one membrane electrode assembly for generating a voltage by reacting fuel and air; An electrode plate provided outside the membrane electrode assembly to guide the flow of voltage generated in the membrane electrode assembly; A pair of end plates provided outside the membrane electrode assembly to protect the membrane electrode assembly and form an appearance; An insulation plate provided between the end plate and the electrode plate to block a voltage moving along the electrode plate from being transferred to the end plate; And coupling means for fastening in a state of being inserted into the cooling water flow passage guiding the cooling water flow direction between the membrane electrode assembly and the insulating plate so that the membrane electrode assembly and the insulating plate are not separated from each other.

The cooling water flow path is characterized in that the perforated in the center of the height of each of the membrane electrode assembly, electrode plate, end plate and insulating plate.

The coupling means is characterized in that it is provided in a pair.

The coupling means may be inserted into one side of the end plate while receiving the cooling water inlet / outlet port for guiding the inlet / outlet of the cooling water and the cooling water inlet / outlet port therein to block electric flow between the cooling water inlet / outlet port and the electrode plate. A through-screw having one end screwed into the cooling water inlet / outlet port through the insulator, the membrane electrode assembly, the electrode plate, the end plate and the insulating plate, and the through-screw accommodated therein to block the contact between the through-screw and the coolant. And a nut coupled to one end of the through screw and generating a pressure such that the membrane electrode assembly, the electrode plate, the end plate, and the insulating plate are in close contact with each other.

On the outer surface of the blocking tube, a spring washer that generates an elastic restoring force when the nut and the through screw are fastened to each other, an insulating washer that blocks current generated from the electrode plate from being transmitted to the nut, and inside the cooling water passage It characterized in that the sealing washer is provided to block the coolant so as not to leak in the longitudinal direction of the blocking tube.

The coolant inlet and outlet ports may include: a flow pipe for guiding the flow of the coolant; Characterized in that it comprises a fastening portion fastened with the screw.

The flow pipe and the coupling portion and the fastening portion is characterized in that it is formed integrally.

The cooling water import and export port is characterized in that it is molded of sus (SUS) or plastic.

Inside the coupling portion, a plurality of through holes for allowing the cooling water introduced into the flow pipe to penetrate the coupling portion is characterized in that perforated.

The plurality of through holes are characterized in that the drilled radially.

The plurality of through holes are characterized in that the respective extension lines cross each other.

The coupling means is formed of an elastic material, characterized in that provided with at least four O-ring to block the leakage of the cooling water.

One surface of the sealing washer is recessed, the O-ring is inserted, characterized in that the pressure generating groove for generating a pressure in the center direction in the O-ring when the nut and the through-screw is fastened.

According to the present invention, since the volume is significantly reduced, there is an advantage that many solid polymer electrolyte fuel cells can be accommodated in a limited space.

Hereinafter, an external configuration of a solid polymer electrolyte fuel cell will be described with reference to FIGS. 2 to 4 with reference to the accompanying drawings. Figure 2 is a perspective view showing the front appearance configuration of a solid polymer electrolyte fuel cell according to the present invention, Figure 3 is a perspective view showing a rear appearance configuration of a solid polymer electrolyte fuel cell according to the present invention, 4 is an exploded perspective view showing the configuration of a solid polymer electrolyte fuel cell according to the present invention.

As shown in these figures, the solid polymer electrolyte fuel cell has a long rectangular parallelepiped shape in a left / right direction as a whole, and an end plate 100 is provided at the front and rear to form a front / rear appearance. Between the end plate 100 of the one or more membrane electrode assembly (200, MEA) to generate a voltage by reacting fuel and air, and the membrane electrode assembly 200 is provided on the outside before / after the membrane electrode assembly 200 Electrode plate 300 for guiding the flow of the voltage generated in the) and the insulating plate 400 for blocking the electrical flow between the electrode plate 300 and the end plate 100 is provided.

Six connection holes (120 in FIG. 4) are perforated in any one of the pair of end plates 100. That is, the six holes include a fuel inlet connector 122 and a fuel outlet connector 123 for guiding the fuel to flow in and out of the solid polymer electrolyte fuel cell, and in the solid polymer electrolyte fuel cell. Air inlet connector 124 and the air outlet connector 125 for guiding the air to flow out / in and out, and the cooling water import and export port 520 for guiding the coolant to flow in / out of the fuel cell Are coupled to the left and right respectively.

The draw / inlet port and the coolant inlet / outlet port 520 penetrate the membrane electrode assembly 200, the electrode plate 300, and the insulating plate 400 to guide the flow of any one of coolant, fuel, and air. 7, a fuel flow path (not shown) and an air flow path (not shown) are respectively formed, and in particular, the cooling water import and export port 520 has a heat (so as to prevent rust generation when contacted with the cooling water). SUS) or plastic.

The end plate 100, the membrane electrode assembly 200, the electrode plate 300, and the insulating plate 400 have sizes corresponding to each other and are fastened by the coupling means 500. That is, the coupling means 500 is fastened in a state in which the coupling means 500 is inserted into the cooling water flow path 110 formed at the center left / right of the height of the fuel cell, thereby constraining both ends of the end plate 100, the membrane electrode assembly 200, The electrode plate 300 and the insulating plate 400 can maintain a rectangular parallelepiped shape without being separated from each other.

To this end, the recessed part 120 is provided at the left / right center of the front end of the end plate 100 so as to prevent the front end of the coupling means 500 from protruding forward of the end plate 100. do.

Since the membrane electrode assembly 200, the insulating plate 400, and the electrode plate 300 are substantially the same in comparison with the related art, detailed description thereof will be omitted.

Hereinafter, with reference to Figures 5 to 7 attached to the coupling means 500, which is a main component of the present invention will be described in detail. 5 is an exploded perspective view of the coupling means 500, which is a main component of the solid polymer electrolyte fuel cell according to the present invention, and FIG. 6 is a longitudinal cross-sectional view of the portion II ′ of FIG. 5. 3 is a longitudinal cross-sectional view of the II-II 'portion of FIG.

As shown in these drawings, the coupling means 500 is inserted into the cooling water flow path 110 as described above and coupled to generate fastening force at both ends thereof, such that the end plate 100, the electrode plate 300, and the insulating plate ( 400) and the like to maintain a close contact with each other.

In addition, the coupling means 500 also serves to prevent the cooling water flowing along the cooling water flow path 110 to leak outside the cooling water flow path 110.

Hereinafter, referring to FIG. 5, the coupling means 500 is a coolant inlet / outlet port 520 for guiding the inlet / outlet of the coolant, and an electric flow between the coolant inlet / outlet port 520 and the electrode plate 300. Penetrating through the insulating sphere 540 and the membrane electrode assembly 200, the electrode plate 300, the end plate 100 and the insulating plate 400, one end is screwed to the cooling water import and export port 520 A screw 550, a blocking tube 560 for blocking contact between the through screw 550 and the cooling water, the membrane electrode assembly 200, the electrode plate 300, the end plate 100 and the insulating plate 400 It is configured to include a nut 580 for generating a pressure to be in close contact with each other.

The left end of the coupling means 500 is provided with a cooling water import and export port 520. The coolant inlet / outlet port 520 guides the inlet / outlet of the coolant, as shown in FIG. 3, and protrudes forward from the front center of the end plate 100, and a separate coolant in the coolant inlet / outlet port 520. A pipe (not shown) and a pump (not shown) for circulating cooling water are connected in communication.

In addition, the cooling water import and export port 520 is a circular tube-shaped flow tube 522 formed on the left side, and protrudes in a ring shape in the outer circumferential direction from the outer peripheral surface end of the flow tube 522 is fitted with the insulating sphere 540 The coupling part 524 and a coupling part 526 which protrudes from the right end of the coupling part 524 to the right direction and are coupled to the through screw 550 are configured.

The flow pipe 522, the coupling part 524, and the fastening part 526 are formed to be integrated into a susceptibility having high corrosion resistance, and the coupling part 524 is moved into the flow pipe 522. A plurality of through holes 523 are formed to allow the introduced cooling water to pass through the coupling part 524.

The through hole 523 is formed radially with respect to the center of the cooling water import and export port 520, and the extension lines of the plurality of through holes 523 cross each other.

In more detail, the through hole 523 is drilled to be inclined to gather toward the center of the cooling water import and export port 520 as the left side from the right side of the coupling portion 524.

Therefore, the cooling water flowing into the flow pipe 522 and passing through the coupling part 524 may be introduced into the cooling water flow path 110 while spreading outward through the through hole 523.

The fastening part 526 is screwed with the left end of the through screw 550, and has a substantially cylindrical shape, and the internal thread 528 corresponding to the pitch of the through screw 550 is processed therein. Therefore, when the screw is coupled to the left end of the through screw 550, the through screw 550 is not separated from the cooling water import and export port 520.

The first O-ring groove 525 is provided on the outside of the through hole 523. The first O-ring groove 525 is formed to be recessed so that the O-ring (R) is inserted therein and has a size corresponding to the O-ring (R) inserted therein and is formed to be shallower than the thickness of the O-ring (R).

Insulating openings 540 are provided on the right side of the cooling water inlet / outlet port 520. The insulator 540 is inserted into one side of the end plate 100 in a state in which the cooling water inlet / outlet port 520 is accommodated therein to block electric flow between the cooling water inlet / outlet port 520 and the electrode plate 300. To play a role, it is molded from an insulating material.

The insulator 540 has a hollow cylindrical shape, the hollow inside is formed stepped. The stepped inner diameter is formed to correspond to the outer diameter of the coupling part 524.

Therefore, when the cooling water import and export port 520 and the insulator 540 are close to each other, the fastening part 526 penetrates through the insulator 540 and protrudes to the right, and the coupling part 524 is stepped. The O-ring R inserted into the research 540 and inserted into the first O-ring groove 525 is brought into contact with the stepped surface of the insulator 540 to the right through the through hole 523. The discharged coolant is prevented from leaking to the left along the gap between the coolant inlet / outlet port 520 and the insulator 540.

The second O-ring groove 542 is recessed in the right side edge portion of the insulator 540. The second O-ring groove 542 is inserted into the O-ring (R) (o-ring shown on the right side of the insulator 540) therein, has a shape corresponding to the O-ring (R), the thickness of the O-ring (R) It is formed more shallowly.

Therefore, when the O-ring R is inserted into the second O-ring groove 542, the right side surface of the O-ring R maintains the state protruding to the right from the second O-ring groove 542.

The through screw 550 passes through the membrane electrode assembly 200, the electrode plate 300, the end plate 100, and the insulating plate 400 at the same time. As described above, the left end of the through screw 550 is the female screw. 528 and the right end are engaged with the nut 580.

Therefore, the through screw 550 is provided in the same manner as the thread formed on the outer surface of the solid rod filled inside.

In addition, an O-ring (R) is provided on an outer circumferential surface of the right end of the through screw (550). The O-ring (R) is configured to prevent the cooling water from flowing into the fastening portion 526 when the left end of the through screw 550 is screwed with the female screw 528.

A blocking tube 560 is provided on an outer circumferential surface of the through screw 550. The blocking tube 560 has a cylindrical shape having a slightly shorter length than the through screw 550, the inside is penetrated to have an inner diameter slightly larger than the outer diameter of the through screw 550.

Therefore, the through screw 550 can penetrate inside the blocking tube 560.

The left end of the blocking tube 560 is provided with a crimping portion 562 protruding to have an outer diameter slightly larger than the outer diameter of the outer peripheral surface of the blocking tube 560. The pressing part 562 is configured to compress the O-ring (R) surrounding the outer peripheral surface of the left end of the through screw 550 in the left direction to prevent leakage of the cooling water.

That is, when the left end of the through screw 550 is fastened to the female screw 528 and the right end is fastened to the nut 580 to generate a compressive force in the blocking pipe 560, the O-ring R is a crimping part. 562 and the inner right surface of the fastening part 526 may be compressed.

The outer circumferential surface of the blocking tube 560 is provided with a number of washers. That is, the spring washer 582 and the current generated in the electrode plate 300 and the spring washer 582 that generates an elastic restoring force when the nut 580 and the through screw 550 is fastened to each other so that the nut 580 is not transmitted to the nut 580. An insulating washer 584 for blocking and a sealing washer 586 for blocking the cooling water in the cooling water passage 110 from leaking in the longitudinal direction of the blocking tube 560 are provided.

The spring washer 582, the insulating washer 584, and the sealing washer 586 are sequentially inserted from the right end of the through screw 550 to the left side, and the outer diameter is formed to correspond to each other. In addition, an O-ring R is further provided on the left side of the sealing washer 586. The O-ring R serves to prevent a gap between the sealing washer 586 and the blocking tube 560 so that the coolant inside the coolant flow path 110 does not leak in the right direction of the through screw 550.

Therefore, the coupling means 500 is provided with all four O-rings (R), and when the shape is changed by applying the embodiment of the present invention as described above may be provided with five or more (R) Of course.

In addition, one surface of the sealing washer 586 is recessed to form an O-ring (R), and when the nut 580 and the through-screw 550 are fastened to generate pressure in the center direction of the O-ring (R). A pressure generating groove 587 is formed.

Therefore, when the pressure generating groove 587 flows to the left side in the same state as in FIG. 7 to generate pressure, the O-ring R is retracted toward the center of the through screw 550 and thus, The outer circumferential surface and the left side of the sealing washer 586 are in contact simultaneously.

Hereinafter, a process of combining the solid polymer electrolyte fuel cell configured as described above will be described with reference to FIGS. 2 to 8B. An enlarged view of portion 'A' of FIG. 7 is illustrated in FIG. 8A, and an enlarged view of portion 'B' of FIG. 7 is illustrated in FIG. 8B.

First, in order to combine the solid polymer electrolyte fuel cell, a plurality of parts as shown in FIG. 4 must be provided, and the number of membrane electrode assemblies 200 is adjusted according to the output required for the solid polymer electrolyte fuel cell. May be stacked in plurality.

Thereafter, the plurality of components prepared as shown in FIG. 4 are stacked to have surface contact with each other. In this case, the end plate 100, the insulating plate 400, the electrode plate 300, and the membrane electrode assembly 200 may have a rectangular parallelepiped shape in which the center portion of the upper / lower left / right surface is slightly recessed in the downward direction as shown in FIGS. 2 and 3. Have

In addition, holes formed in the left and right sides of the end plate 100, the insulating plate 400, the electrode plate 300, and the membrane electrode assembly 200 communicate with each other in the solid polymer electrolyte fuel cell. As a result, the cooling water flow path (reference numeral 110 in FIG. 7), the fuel flow path (not shown), and the air flow path (not shown) are respectively formed.

At this time, the O-ring (R) is inserted into the first O-ring groove 525 and then the cooling water import and export port 520 and the insulator 540 is fitted. In addition, the O-ring (R) is also inserted into the second O-ring groove 542, and then the cooling water import and export port 520 and the insulator 540 are rearward from the front side (as seen in FIG. 3) of the solid polymer electrolyte fuel cell. Will be inserted.

Thereafter, the through screw 550, the blocking tube 560, and a plurality of washers are assembled in the state as shown in FIG. 5, and then inserted into the cooling water flow path 110 from the rear side to the front side as seen in FIG.

As a result, the male thread formed on the outer surface of the left side (see FIG. 8A) of the through screw 550 is engaged with the female screw 528 to generate a compressive force, so that the O-ring R inserted into the first O-ring groove 525 Compression with the inner right side of the fastening part 526 is blocked.

At the same time, the first O-ring groove 525 and the second O-ring groove 542 are in close contact with the insulator 540 and the end plate 100, respectively, to block the leakage of the cooling water.

Meanwhile, as shown in FIG. 8B, as the right part of the through screw 550 is fastened to the inside of the nut 580, the sealing washer 586 pushes the O-ring R to the left, and the O-ring R is recessed. By simultaneously contacting the left side of the 120 and the outer circumferential surface of the blocking tube 560, the cooling water inside the cooling water passage 110 is not leaked to the right side in the longitudinal direction of the through screw 550.

The state of the solid polymer electrolyte fuel cell assembled through the above process can be confirmed in FIGS. 2 and 3.

The scope of the present invention is not limited to the above-exemplified embodiments, and many other modifications based on the present invention will be possible to those skilled in the art within the above technical scope.

As described in detail above, in the solid polymer electrolyte fuel cell according to the present invention, the solid polymer electrolyte fuel cell can be accommodated in a limited space by configuring the end plate not to form a separate portion for fastening the fastening means. It was made.

Therefore, since a large output can be obtained in the same space, there is an advantage in that the space efficiency of the solid polymer electrolyte fuel cell is maximized.

In addition, since the size of the material used to manufacture the end plate is reduced, there is an advantage that the manufacturing cost is reduced.

In addition, there is an advantage that the assembly time is improved and the time required for assembly is significantly reduced, thereby increasing productivity and price competitiveness.

Claims (13)

At least one membrane electrode assembly 200 generating a voltage by reacting fuel and air; An electrode plate 300 provided outside the membrane electrode assembly 200 to guide the flow of voltage generated in the membrane electrode assembly 200; A pair of end plates provided outside the membrane electrode assembly 200 to protect the membrane electrode assembly 200 and to form an appearance; An insulating plate 400 provided between the end plate 100 and the electrode plate 300 to block a voltage moving along the electrode plate 300 from being transferred to the end plate 100; The membrane electrode assembly 200 to the insulating plate 400 is fastened in a state of being inserted into the cooling water flow path 110 to guide the flow direction of the cooling water between the insulating film 400 so that the membrane electrode assembly 200 to the insulating plate 400 is not separated from each other. Coupling means (500); Solid polymer electrolyte fuel cell comprising a. The method of claim 1, wherein the cooling water flow path 110, Solid membrane electrolyte fuel cell, characterized in that perforated in the center of the height of each of the membrane electrode assembly (200), electrode plate (300), end plate (100) and insulating plate (400). The method of claim 2, wherein the coupling means 500, Solid polymer electrolyte fuel cell, characterized in that provided in a pair. The method of claim 1, wherein the coupling means 500, A coolant inlet / outlet port 520 for guiding the inlet / outlet of the coolant, An insulator 540 inserted into one side of the end plate 100 in a state in which the cooling water inlet / outlet port 520 is accommodated therein and blocking electric flow between the cooling water inlet / outlet port 520 and the electrode plate 300; , A through screw 550 having one end screwed through the membrane electrode assembly 200, an electrode plate 300, an end plate 100, and an insulating plate 400, and screwed to the cooling water import and export port 520; Blocking pipe 560 for accommodating the through screw 550 therein to block the contact between the through screw 550 and the cooling water; The solid polymer is characterized in that it comprises a nut 580 is coupled to one end of the through-screw 550 to generate a pressure to be in close contact with the membrane electrode assembly 200, the end plate 100 and the insulating plate 400 Electrolytic Fuel Cell. The outer surface of the blocking tube 560, according to claim 4, A spring washer 582 that generates an elastic restoring force when the nut 580 and the through screw 550 are fastened to each other; An insulation washer 584 for blocking current generated from the electrode plate 300 from being transmitted to the nut 580; A solid polymer electrolyte fuel cell, characterized in that a sealing washer (586) for blocking the cooling water in the cooling water flow path 110 to prevent leakage in the longitudinal direction of the blocking tube (560). The method of claim 4, wherein the cooling water import and export port 520, A flow pipe 522 for guiding the flow of cooling water, A coupling part 524 protruding from one end of an outer circumferential surface of the flow tube 522 to be coupled to the insulator 540, and A solid polymer electrolyte fuel cell comprising a fastening part 526 which protrudes outwardly from one end of the coupling part 524 and is fastened to the through screw 550. The solid polymer electrolyte fuel cell of claim 6, wherein the flow tube 522, the coupling part 524, and the coupling part 526 are integrally formed. [8] The solid polymer electrolyte fuel cell of claim 6 or 7, wherein the cooling water import and export port (520) is formed of sus or plastic. According to claim 6, Inside the coupling portion 524, A solid polymer electrolyte fuel cell, characterized in that a plurality of through-holes (523) for allowing the coolant introduced into the flow pipe (522) to pass through the coupling portion (524). The method of claim 9, wherein the plurality of through holes 523, A solid polymer electrolyte fuel cell, characterized in that perforated radially. The method of claim 10, wherein the plurality of through holes 523, A solid polymer electrolyte fuel cell, wherein each of the extension lines is formed to cross each other. The method of claim 5, wherein the coupling means 500, A solid polymer electrolyte fuel cell, characterized in that formed of a material having elasticity is provided with four or more (R) O-ring to block the leakage of cooling water. The method of claim 12, wherein one surface of the sealing washer 586 is recessed, the O-ring (R) is inserted, when the nut 580 and the through-screw 550 is fastened in the center direction to the O-ring (R). A solid polymer electrolyte fuel cell comprising a pressure generating groove 587 for generating pressure.

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