KR20070042814A - Stack for fuel cell and fuel cell system using the same - Google Patents

Abstract

The present invention relates to a fuel cell stack and a fuel cell system using the same. More particularly, the present invention relates to a fuel cell stack, which is manufactured in a cartridge type so that the fuel cell stack can be replaced. The present invention relates to a fuel cell stack and a fuel cell system using the same, which can be applied to various electric / electronic devices and can increase the convenience of repair or replacement by separating a stack having a high probability of failure from the system.

Fuel cell system, stack, cartridge, fastening means, fastening means

Description

Stack for fuel cell and fuel cell system using same {Stack for fuel cell and Fuel cell system using the same}

1 is a configuration diagram of a fuel cell system according to an embodiment of the present invention.

Figure 2a is a perspective view before the exterior material is attached to the stack for a fuel cell according to an embodiment of the present invention

Figure 2b is an exploded perspective view of the exterior member is attached to the stack of Figure 2a

3a is an enlarged perspective view of a quick coupling as the fastening means of FIG.

3B is a cross-sectional view of FIG. 3A

4 is a plan view of a fuel cell system coupled to a base substrate according to an embodiment of the present invention;

<Description of Symbols for Main Parts of Drawings>

100-Stack 105-Electricity Generation

110-first fastening means 120-second fastening means

130-third fastening means 140-fourth fastening means

150-pressure plate 160-fastening means

160a-Joining Groove 170-Exterior

200-Fuel Tank 210-Liquid Pump

300-Fuel Dilution Tank 400-Fuel Supply Pump

500-Air Supply 600-Peripheral Equipment

700-Base Board

140-fourth fastening means

The present invention relates to a fuel cell stack and a fuel cell system using the same. More particularly, the present invention relates to a fuel cell stack, which is manufactured in a cartridge type so that the fuel cell stack can be replaced. The present invention relates to a fuel cell stack and a fuel cell system using the same, which can be applied to various electric / electronic devices and can increase the convenience of repair or replacement by separating a stack having a high probability of failure from the system.

A fuel cell is a power generation system that directly converts the chemical reaction energy of hydrogen and oxidant contained in hydrocarbon-based materials such as methanol, ethanol and natural gas into electrical energy.

Such a fuel cell is composed of a fuel cell system, and examples thereof include a polymer electrolyte fuel cell (PEMFC) system and a direct methanol fuel cell (DMFC) system. Can be.

In general, a PEMFC system includes a stack for generating electrical energy by reaction of hydrogen and oxygen, and a reformer for reforming fuel to generate hydrogen. The PEMFC system has the advantages of high energy density and high output, but requires attention to handling hydrogen gas, and a unit such as a fuel reformer for reforming methane, methanol, or natural gas to produce hydrogen, fuel gas. You need equipment.

In contrast, DMFC systems generate methanol by electrochemical reactions by directly supplying methanol fuel and oxygen as an oxidant to the stack. The DMFC system has a very high energy density and power density, and since it uses liquid fuel such as methanol directly, it does not require any supplementary equipment such as a fuel reformer and has the advantage of easy storage and supply of fuel.

In such a DMFC system, a substantially generating stack includes a unit cell consisting of a membrane-electrode assembly (hereinafter referred to as MEA) and a separator (hereinafter referred to as a bipolar plate). One or more have a laminated structure. The MEA is formed by interposing an electrolyte membrane between an anode electrode and a cathode electrode. In addition, the structure of each anode electrode and the cathode electrode is provided with a fuel diffusion layer (diffusion layer) for the supply and diffusion of fuel, a catalyst layer for the oxidation / reduction reaction of the fuel, and an electrode support. The catalyst layer is a noble metal catalyst such as platinum having excellent properties even at low temperatures, in particular the anode electrode is a transition such as ruthenium, rhodium, osmium, nickel, etc. in order to prevent catalyst poisoning by carbon monoxide as a reaction by-product Metal alloy catalysts are used. The electrode support is made of carbon paper, carbon fabric, etc., and is used after being water-proofed to facilitate fuel supply and discharge of reaction products. The electrolyte membrane is a polymer membrane having a thickness of 50 to 200 μm, which contains moisture and is a hydrogen ion exchange membrane having ion conductivity.

The electrode reaction in the stack of a DMFC system consists of an anode reaction in which the supplied fuel is oxidized and a cathode reaction in which oxygen in the supplied air is reacted with hydrogen ions moved from the anode to be reduced.

In the anode electrode where the oxidation reaction occurs, carbon dioxide, hydrogen ions and electrons are generated by the reaction of methanol and water, and the generated hydrogen ions are transferred to the cathode electrode through the electrolyte membrane. In the cathode electrode where the reduction reaction occurs, water is generated by reaction of hydrogen ions and electrons and oxygen transferred through an external circuit. Therefore, the overall reaction of DMFC is the reaction of methanol and oxygen to produce water and carbon dioxide. At this time, one mole of methanol reacts with oxygen to produce two moles of water.

On the other hand, peripheral devices other than the stack, such as fuel supply unit, air supply unit (hereinafter referred to as BOP) are permanently coupled to the stack. Therefore, the stack can be connected to and supply power only to electrical / electronic devices requiring a specific voltage, causing a problem that the entire fuel cell system needs to be replaced for use in electrical / electronic devices requiring different outputs. . In addition, the stack has a complicated and sophisticated structure such as a fuel passage, an air passage, and a catalyst layer therein, and thus has a high probability of failure. In this structure, if the stack fails, the entire system needs to be purchased additionally.

The present invention has been made to solve the above problems, in particular, by manufacturing a cartridge type to replace the fuel cell stack to replace the stack without the fuel cell system, various electrical / electronics requiring a variety of output and capacity It is an object of the present invention to provide a fuel cell stack and a fuel cell system using the same, which can be applied to a device and can separate a stack having a high probability of failure from a system to increase the convenience of repair or replacement.

In order to solve the above problems, the fuel cell stack of the present invention includes a membrane-electrode assembly having an anode electrode and a cathode electrode attached to both surfaces of the electrolyte membrane with an electrolyte membrane therebetween, and the membrane-electrode assembly. An electricity generator having separators disposed on both sides; And fastening means in close contact with the electricity generating unit at the outermost portion of the at least one electricity generating unit, an inlet through which fuel and air are injected, and an outlet through which water and carbon dioxide are discharged, and a fixing means is detachable from the base substrate. It is characterized by including a pressing plate which is made.

The fastening means may also be a quick coupling or a swage lock. In this case, the swage lock may be formed of stainless steel or teflon material. In addition, the electricity generating unit may be formed to be surrounded by an exterior material. In addition, the exterior material may be made of any one material of styrofoam, plastic, rubber.

In addition, the fuel cell system according to the present invention includes a peripheral device having a fuel supply unit for supplying a fuel containing hydrogen to the stack, and an air supply unit for supplying air to the stack (Balance Of Plant; BOP); And an electrode generator having an anode electrode and a cathode electrode attached to both surfaces of the electrolyte membrane with the electrolyte membrane interposed therebetween, and a separator disposed on both sides of the membrane electrode assembly. A stack comprising a pressurizing plate in close contact with the electricity generating unit at an outermost part of the generating unit and including a fastening means at an inlet through which fuel and air are injected and an outlet through which water and carbon dioxide are discharged; The peripheral device (BOP) and the stack is mounted on one base substrate, characterized in that the stack is formed to be detachable from the base substrate and the peripheral device (BOP).

In addition, the peripheral device BOP and the stack may be connected to each other through a connection passage, or may be formed to be directly connected through the fastening means. In addition, the connection passage may be a metal tube or a plastic tube.

In addition, the stack may be coupled to the base substrate through a fixing means formed on the pressing plate. In addition, the fastening means may be formed by any one of the fastening means described above. In addition, the stack may be formed by surrounding the electricity generating additional exterior material.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 shows a configuration of a fuel cell system according to an embodiment of the present invention. 2A is a perspective view of a fuel cell stack according to an embodiment of the present invention before the exterior material is attached, and FIG. 2B is an exploded perspective view of the exterior material attached to the stack of FIG. 2A. FIG. 3A is a fastening means of FIG. 2. An enlarged perspective view of the coupling is shown, and FIG. 3B shows a sectional view of FIG. 3A. 4 is a plan view illustrating a fuel cell system coupled to a base substrate according to an embodiment of the present invention. Hereinafter, the DMFC has been described as an example, but the present invention can be applied to the case of the PEMFC. The difference is that PEMFC requires a reformer and does not require a fuel dilution tank.

A fuel cell system according to an embodiment of the present invention, referring to FIG. 1, includes a stack 100, a fuel tank 200, a crude liquid pump 210, a fuel dilution tank 300, and a fuel supply pump 400. Is formed. In addition, the fuel cell system may further include an air supply unit 500 for supplying air to the stack. In addition, the fuel cell system may further include a base substrate 700. Here, the fuel tank 200 and the stock solution pump 210 may not be provided when using a cartridge type fuel tank. In addition, in the case of the PEMFC may be formed to include a reformer further. Hereinafter, the fuel tank 200, the crude liquid pump 210, the fuel dilution tank 300, the fuel supply pump 400, and the like are referred to as a fuel supply unit, and the air supply unit 500 includes the peripheral device. It is referred to as (600).

Referring to FIGS. 2A and 2B, the stack 100 includes an electric generator 105, first fastening means 110, and fourth fastening means 140, a pressing plate 150, and fixing means 160. And an exterior material 170.

The electricity generating unit 105 has a structure in which one or two or more unit cells including a MEA and a bipolar plate are stacked. The MEA is formed by interposing an electrolyte membrane between an anode electrode and a cathode electrode. In addition, the structure of each anode electrode and the cathode electrode is provided with a fuel diffusion layer (diffusion layer) for the supply and diffusion of fuel, a catalyst layer for the oxidation / reduction reaction of the fuel, and the electrode support. The anode is supplied with fuel diluted in a predetermined concentration from the fuel dilution tank 300 to the first fastening means 110 formed on one side, and carbon dioxide and unreacted fuel, which are by-products, are reacted to the second fastening means 120 formed on the other side. Is discharged. At this time, the unreacted fuel discharged from the anode is recovered to the fuel dilution tank 300 by a pipe 125 connecting the anode and the fuel mixing tank 300 to each other. The cathode is supplied with air to the third fastening means 130 formed at one side, and the unreacted air and water as a reaction by-product are discharged to the fourth fastening means 140 formed at the other side. At this time, the water discharged from the other side of the cathode is recovered to the fuel dilution tank 300 is used to dilute the fuel stock solution to a predetermined concentration.

The first fastening means 110, with reference to Figures 3a and 3b, is made of quick coupling (quick coupling). Hereinafter, the reference numeral of the quick coupling as an example of the first fastening means 110 will be used as the reference numeral of the first fastening means 110. The first fastening means 110 is a fuel dilution. It is a portion that serves as an inlet for supplying fuel diluted from the tank 300 to a predetermined concentration to the anode of the electricity generating unit 105. The first fastening means 110 may be directly connected to a fuel injection hole formed at one side of the pressure plate 150, and the first fastening means 110 may include a fuel injection tube on the pressure plate 150. After forming may be connected to one side of the fuel injection pipe.

Here, the quick coupling 110 is a fastening means formed so as to connect the two parts separated from each other more quickly and easily by changing the conventional coupling structure. The quick coupling 110 is divided into two parts 111 and 115 separated from each other. One side 111 of the two parts constituting the quick coupling 110 is provided with one side connecting portion 112 and the separating button 113, the other side 115 is the other connecting portion 116 and the sealing ring 117 is formed. The one side connection part 112 may be connected to the stack 100 or the fuel supply pump 400, and is preferably connected to the fuel supply pump 400. The one side connection portion 112 is preferably connected to the direction of the fuel supply pump 400 to be used semi-permanently without replacement because the wear is relatively small and less likely to deform when used several times than the other side connection portion 116. In addition, the one side connection portion 112 may be directly connected to the fuel supply pump 400, and may also be connected to the end of the connection passage 410 connected to the fuel supply pump 400 as described above. . Similarly, the other side connecting portion 116 may be connected to the stack 100 or the fuel supply pump 400, preferably to the stack 100. The other side connection portion 112 is not only bited by the one side connection portion 116, but also because the sealing ring 117 formed at the end of the other side 115 may be worn, which is connected to the removable stack 100 side. It is preferable. In addition, the other side connection part 112 may be directly connected to the stack 100, and may also be connected to an end portion of the connection passage 410 connected to the fuel injection hole formed in the pressure plate 150. Same as one. The one side 111 and the other side 115 are combined by pressing each other without going through a separate process when combined. The one side 111 and the other side 115 is separated by pressing the separation button 113 formed on one side 111 at the time of separation and spaced in the opposite direction. Since the quick coupling 110 is a fastening means generally used in the art, the detailed structure and operation of the quick coupling 110 will be omitted.

In addition to the quick coupling of FIG. 3A, the first fastening means 110 may be a fitting (not shown) such as a swage lock. The swage lock is typically formed with a nut, pre-ferrules, and post-ferrules. When the swage lock is tightened by rotating the nut, the rear ferrule pushes the lower portion of the front ferrule so that the front ferrule seals the passage. In the case of the swage lock, the coupling method is the same as that of the quick coupling, and thus a detailed description thereof will be omitted. In addition, since the swage lock is a fastening means generally used in the art, a detailed description of the detailed structure and operation of the swage lock will be omitted. In addition, the swage lock may be formed of stainless steel or teflon material. When the swage lock is directly connected to the stack 100 or the fuel supply pump 400 or is connected through a metal passage, a stainless steel material is preferably used. In addition, the swage lock may use a Teflon material when the swage lock is connected to a connection passage made of a plastic tube connected to the stack 100 or the fuel supply pump 400. Here, the material of the swage lock is not limited.

The second fastening means 120 is a portion that serves as an outlet for discharging unreacted fuel from the anode of the electricity generating unit 105 to the fuel dilution tank 300 by the unreacted fuel inlet pipe 125. The third fastening means 130 is an inlet portion through which the air is injected into the electricity generating portion 105 from the air supply portion 500 through the air supply passage 510. The fourth fastening means 140 is a portion which is an outlet through which water is discharged from the cathode of the electricity generating unit to the fuel dilution tank 300 through a pipe. Here, the second fastening means 120 to the fourth fastening means 140 is different only in the coupling position, the kind, the coupling method and the action is similar to the first fastening means 110, so the detailed description Omit.

The pressing plate 150 includes two metal plates and fixing means 160 facing each other, and is a part to keep the electricity generating unit 105 close to each other to maintain airtightness. The pressure plate 150 may be formed with a current collector plate interposed between the outermost bipolar plate, and the stack 100 is assembled by tightening the pressure plate 150 with a threaded fastening rod and a nut. The pressing plate 150 may be configured as a current collecting unit for collecting electrical energy generated by the electricity generating unit 105 of course. The pressure plate 150 is formed to have a larger area than the bipolar plates located between them. That is, the pressing plate 150 has a structure in which the edge portion is extended to the outside of the edge end of the bipolar plate, the coupling portion is installed through the portion extending out of the bipolar plate to tighten both the pressing plate 150 to couple. do. The first fastening means 110 to the fourth fastening means 140 may be directly coupled to a predetermined position of the pressing plate 150. After the connection passage is formed, the first fastening means 110 to the fourth fastening means 140 may be formed. The fastening means 110 to the fourth fastening means 140 may be combined. The pressing plate 150 may have a front shape having a quadrangular shape or an H shape, and the pressing plate 150 may not limit the front shape of the pressing plate 150. Electrode drawing terminals 106 and 107 are formed between the pressing plate 150 and the outermost bipolar plate, and the electrode drawing terminals 106 and 107 are welded to a predetermined position of the pressing plate 150 by welding or the like. Of course, it may be formed separately. The electrode lead terminals 106 and 107 are portions to be loaded, and serve to connect electricity generated by the stack 100 to an external circuit.

The fixing means 160 is a part for fixing the stack 100 to the base substrate 700. The fixing means 160 are formed on the two pressure plates 150, respectively, and are preferably formed on the lower end of the pressure plate 150. The fixing means 160 is formed to have a length (standard in the y direction in FIG. 2A) such that the stack 100 does not flow from side to side on the base substrate 700, and the fixing means 160 is sufficiently formed on the base substrate. It is preferable to form a width (standard in the x direction in FIG. 2A) that can be combined on the 700. In addition, the fixing means 160 is preferably formed to a thickness (standard in the z-direction in Figure 2a) to the extent that the stack 100 is not separated from the base substrate 700 by an external impact or the like. The fixing means 160 is formed with a coupling groove (160a). The coupling groove 160a is a portion having a thread formed therein so that the fixing means 160 may be rotated and inserted to couple the base substrate 700 to the fixing means 160. Of course, the coupling groove 160a may not have a thread formed therein according to the coupling means. The fixing means 160 may be manufactured integrally with the pressing plate 150 so that the stack 100 can be freely attached to or removed from the base substrate 700 as necessary, and welding the pressing plate 150 to the base plate 700. It may also be attached. The fixing means 160 may be formed in a quadrangular shape and a semicircular shape in a flat shape, and the fixing means 160 is not limited to the flat shape of the fixing means 160.

2B, the exterior member 170 is attached to the top, bottom, left, and right sides of the stack 100. The packaging material 170 is formed to have a length and width corresponding to the electricity generating portion 105 so as to cover the electricity generating portion 105 of the stack 100. The exterior material 170 is formed with a plurality of holes. Since the stack 100 is an exothermic reaction part, a large amount of heat is generated. Therefore, the exterior material 170 is formed by a plurality of holes, so that the heat generated in the stack 100 can be discharged to the outside. The exterior material 170 not only improves the merchandise of the stack 100 that can be used in a cartridge type, but also makes it convenient for a user to handle the stack 100, and the electric generator 105 is damaged from an external environment. It also serves to protect the electricity generating unit 105 so as not to receive. The exterior member 170 may be formed to have a thickness corresponding to an area difference between the bipolar plate positioned at the outermost portion of the electricity generating unit 105 and the pressure plate 150 formed to extend by a predetermined area than the bipolar plate. Do. That is, the exterior member 170 also has a function of correcting an external standard difference between the electricity generating unit 105 and the pressure plate 150. Therefore, the stack 100 is formed in a clean and smooth outer surface, it is convenient for the user to handle. In addition, the exterior material 170 may be formed of styrofoam, plastic, rubber, and preferably formed of plastic. As shown in FIG. 2B, the exterior member 170 may be formed by attaching up, down, left, and right four plates, respectively, and may also be formed by injection molding plastic to form a plastic coating layer on the outer surface of the stack 100. Here, the method of manufacturing the exterior material 170 is not limited. At this time, the electrode lead terminals 106 and 107 should be formed to be exposed to the outside of the exterior material 170, of course.

Referring to FIG. 4, the base substrate 700 is formed in a substantially flat shape such that the peripheral device 600 and the stack 100 may be coupled to an upper surface thereof. The base substrate 700 serves to fix the peripheral device 600 and the stack 100 so that the fuel cell system according to the present invention can be formed on one substrate. At this time, the peripheral device 600 may be permanently coupled to the base substrate 700, and may also be formed to be detachable. However, in this case, of course, in order for the peripheral device 600 to be detachable from the base substrate 700, a separate fixing means must be provided in the peripheral device 600. The stack 100 may be coupled to the base substrate 700 through the fixing means 160, or may be separated from the base substrate 700. The base substrate 700 is preferably made of a material that can be freely coupled, such as plastic or wood. In the case of an electric / electronic device requiring a larger output and capacity, the size of the stack 100 is increased, so the base substrate 700 is preferably formed to have a sufficient area. When the size of the stack 100 is changed, the position where the fixing means 160 is coupled to the base substrate 700 is also changed, so that the base substrate 700 can be easily coupled to the fixing means 160. It must be formed. The base substrate 700 may be formed in a polygonal shape, a circular shape in a planar shape and may be formed in various shapes according to the use environment. Therefore, the planar shape of the base substrate 700 is not limited thereto.

1 and 4, the peripheral device 600 includes a fuel supply unit 200, 210, 300, and 400 and an air supply unit 500. The fuel supply unit 200, 210, 300, and 400 includes a fuel tank 200, a crude liquid pump 210, a fuel dilution tank 300, and a fuel supply pump 400.

The fuel tank 200 is a stock solution of the fuel used in the fuel cell system is stored, the stock solution pump 210 and the stock solution pipe 220 is formed to one side in order. At this time, the stock solution pump 210 may be directly connected to the fuel tank 200 and may be connected by a separate pipe 230, of course. The fuel tank 200 stores fuel such as metalol and ethanol depending on the fuel used. The fuel tank 200 may not be provided when using a cartridge type dilution fuel, of course.

The stock solution pump 210 is connected to the stock solution pipe 220 and supplies the fuel of the fuel tank 200. The stock solution pump 210 may be used a variety of pumps that can supply a liquid, and the type is not limited thereto.

The fuel dilution tank 300 is diluted with a fuel having a predetermined concentration by mixing the fuel stock solution supplied from the fuel tank 200 with the unreacted fuel supplied from the anode and the cathode of the stack 100 and water as a reaction by-product. Fuel is stored and supplied to the stack 100. However, as mentioned above, in the case of PEMFC, the fuel dilution tank 300 may not be provided. The fuel dilution tank 300 is introduced into the unreacted fuel from the anode of the stack 100 through the unreacted fuel inlet pipe 125, and the fuel feed solution from the feed pump 210 through the stock solution pipe 220 It is introduced, the water is a reaction by-product from the stack 100 is introduced through the water inlet pipe 145, and the diluted fuel is supplied to the fuel supply pump 400 through the fuel supply pipe 305.

The fuel supply pump 400 is connected to the fuel supply pipe 305 of the fuel dilution tank 300 to one side, and is connected to the anode side of the stack 100 through the fuel pipe 410 to the other side. Therefore, the fuel supply pump 400 supplies the fuel of the fuel dilution tank 300 to the anode side of the stack 100 through the fuel pipe 410. The fuel supply pump 400 may be used a variety of pumps capable of transferring the liquid, such as the feed liquid pump 210.

The air supply unit 500 is connected to one side of the cathode of the stack 100 to forcibly supply air. At this time, the air supply unit 500 may be connected to the cathode through a separate air pipe 510. The air supply unit 500 may be applied to various air supply means such as an air pump, an air blower (of course).

Next, the operation of the fuel cell system according to the embodiment of the present invention will be described.

Referring to FIG. 4, a fuel cell system according to an exemplary embodiment of the present invention includes a stack 100, a peripheral device 600, and a base substrate 700. The stack 100 and the peripheral device 600 are positioned on the base substrate 700. The stack 100 is connected to the peripheral device 600 through a plurality of connecting passages with the first fastening means 110 to the fourth fastening means 140. The stack 100 may malfunction in the stack 100 during operation of the fuel cell system. In this case, the stack 100 is disconnected from the peripheral device 600 through the first fastening means 110 to the fourth fastening means 140. At this time, the first fastening means 110 to the fourth fastening means 140 is made of a device that can easily and quickly remove the connection, such as a quick coupling or a fitting. Thereafter, the stack 100 is separated from the base substrate 700 by loosening a screw coupled to the fixing means 160. The separated stack 100 can be found and repaired accordingly to the cause of the failure and remounted in the fuel cell system, or a new stack 100 can be mounted. The stack 100 may be mounted in the reverse order of the above-described separation procedure. Therefore, when the cause of the failure is only in the stack 100, it is possible to restart the fuel cell system by replacing only the stack 100 with good products without replacing the entire fuel cell system. That is, the peripheral device 600 can be used semi-permanently as it is without a separate exchange.

In addition, the fuel cell system can flexibly cope with the necessity of using an electric / electronic device requiring a specific voltage and using a higher voltage or a lower voltage. First, the stack 100 is disconnected from the peripheral device 600 through the first fastening means 110 to the fourth fastening means 140. Thereafter, the stack 100 is separated from the base substrate 700 by loosening a screw, etc. coupled to the fixing means 160, and then the stack 100 corresponding to the rated voltage of the electrical / electronic device to be used is Reseat.

As described above, the present invention is not limited to the specific preferred embodiments described above, and any person having ordinary skill in the art to which the present invention pertains without departing from the gist of the present invention claimed in the claims. Various modifications are possible, of course, and such changes are within the scope of the claims.

According to the fuel cell system according to the present invention, the fuel cell stack is manufactured in a cartridge type so that the fuel cell stack can be replaced, and thus the stack can be applied to various electric / electronic devices requiring a variety of outputs and capacities without replacing the fuel cell system. In addition, the stack having a high probability of failure can be separated from the system to increase the convenience of repair or replacement.

In addition, the fuel cell system of the present invention can be applied to various electric / electronic devices as one peripheral device, and can flexibly cope with various cases at a lower cost, thereby increasing the consumer's purchase desire.

Claims (11)

An electricity generating unit including a membrane-electrode assembly having an anode electrode and a cathode electrode attached to both surfaces of the electrolyte membrane with an electrolyte membrane therebetween, and a separator disposed on both sides of the membrane-electrode assembly; And At least one of the electricity generating unit is in close contact with the electricity generating unit, and a fastening means is provided at the inlet through which fuel and air are injected and the outlet through which water and carbon dioxide are discharged, and fixing means are formed to be detachable from the base substrate. A stack for a fuel cell, comprising a pressurizing plate. The method of claim 1, The fastening means is a fuel cell stack, characterized in that the quick coupling (quick coupling) or swage lock (swage lock). The method of claim 2, The swage lock is a fuel cell stack, characterized in that formed of stainless steel or teflon (teflon) material. The method of claim 1, The stack is a fuel cell stack, characterized in that formed to be surrounded by an outer material. The method of claim 4, wherein The exterior material is a fuel cell stack, characterized in that made of any one material of styrofoam, plastic, rubber. A peripheral device having a fuel supply unit for supplying a fuel containing hydrogen to the stack and an air supply unit for supplying air to the stack; Wow A membrane-electrode assembly having an anode electrode and a cathode electrode attached to both surfaces of the electrolyte membrane with an electrolyte membrane interposed therebetween, an electricity generator including a separator disposed on both sides of the membrane-electrode assembly, and at least one electricity generation. A stack comprising a pressurizing plate in close contact with the electricity generating unit at an outermost part of the unit and including a fastening means at an inlet through which fuel and air are injected and an outlet through which water and carbon dioxide are discharged; It is made, including The peripheral device (BOP) and the stack is mounted on one base substrate, the stack is formed to be detachable from the base substrate and the peripheral device (BOP) fuel cell system. The method of claim 6, The peripheral device (BOP) and the stack is connected to each other via a connection passage, or the fuel cell system characterized in that it is formed to be directly connected through the fastening means. The method of claim 7, wherein The connecting passage is a fuel cell system, characterized in that the metal tube or plastic tube. The method of claim 6, And the stack is coupled to the base substrate through fixing means formed on the pressing plate. The method of claim 6, Said fastening means being a quick coupling or a swage lock. The method of claim 6, The stack is a fuel cell system, characterized in that formed by surrounding the outer material.

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