TWI424609B - Fuel cell system and fuel cell module thereof - Google Patents

Description

Fuel cell system and fuel cell module thereof

The present invention relates to a fuel cell device, and more particularly to a fuel cell module that can enhance the contact force between internal components.

A conventional flow field plate refers to a structure that can be used to carry, transport, divide, and/or distribute one or more fluids. The flow system referred to herein is a generalized term that can be any position that can flow from one of the spaces. Substance to another location. For example, the aforementioned fluid may comprise air, a gas, a liquid, or a viscous fluid or the like that may flow or move from any location in space to another location.

Conventional flow field plates, for example, can be used in fuel cells to transport, direct, and/or distribute one or more fuels, which are liquid or gaseous materials that can be used to generate electricity. FIG. 1 discloses a conventional fuel cell device, such as a single cell structure 400 of a Proton Exchange Membrane Fuel Cell (PEMFC), which mainly includes a membrane electrode assembly (MEA) 410. Two gas diffusion layers 405, 406 (gas diffusion layer, GDL) and two flow field plates 401, 402 (fluid flow plate). As shown in FIG. 1, the membrane electrode assembly 410 is sandwiched between the gas diffusion layers 405 and 406, and the membrane electrode assembly 410 and the gas diffusion layers 405 and 406 are sandwiched between the flow field plates 401 and 402. One or more flow channels (e.g., flow channels 403, 404) may be formed on the field plates 401, 402, and a reactive fluid may flow through each of the flow channels. For example, the membrane electrode assembly 410 may include a proton exchange membrane 409 (PEM), an anode catalyst layer 407, and a cathode catalyst layer 408, wherein the catalyst layer 407, 408 usually has a composition such as platinum or a platinum alloy to facilitate electrochemical fuel cell reactions.

Conventional fuel cells may cause poor contact between electrodes or other components due to insufficient contact force between internal components in some cases, which may result in poor overall performance of the fuel cell. In view of this, how to strengthen the contact force between the internal components of the fuel cell to improve the performance of the fuel cell has become an important issue.

One embodiment of the present invention provides a fuel cell module including a membrane electrode assembly, two gas diffusion layers, two current collecting elements, two sealing elements, and a first-rate field plate. The gas diffusion layers are respectively coupled to opposite sides of the membrane electrode group, and the current collecting elements are coupled to the gas diffusion layer and the sealing member. The flow field plate is coupled to one of the first sides of the membrane electrode assembly and has a flow path in which one of the exposed sides of the flow channel is coupled to the membrane in the membrane electrode assembly. At least one of the foregoing membrane electrode assembly, gas diffusion layer, current collecting member, and sealing member is formed with a non-planar structure, and at least a portion of the non-planar structure is flattened during assembly.

An embodiment of the present invention further provides a fuel cell module comprising a membrane electrode assembly, two gas diffusion layers, two current collecting elements, two sealing elements, and a first-rate field plate. The membrane electrode assembly has at least one membrane for performing a fuel cell reaction. The gas diffusion layers are coupled to opposite sides of the membrane electrode group, respectively. The current collecting elements are coupled to the gas diffusion layer, respectively. The sealing elements are coupled to the current collecting elements, respectively. The flow field plate is coupled to a first side of the membrane electrode assembly, wherein at least one of the gas diffusion layer, one of the current collecting elements, and at least one of the sealing elements are located on a first side of the membrane electrode assembly and Between the flow field plates. The flow field plate has a first-class track in which one of the exposed sides of the flow path is coupled to the film in the film electrode set. Before the assembly of the membrane electrode assembly, the gas diffusion layer, the current collecting element and the sealing element, at least one of the current collecting elements forms a non-planar structure, and at least a part of the non-planar structure is assembled during the assembly of the fuel cell module To flatten.

An embodiment of the present invention further provides a fuel cell system including a bracket and a plurality of fuel cell modules, wherein the bracket is used as a support structure of the fuel cell system. The bracket has a passage to provide a fluid, and one side of each fuel cell module is fixed to the bracket, and the fuel cell module is disposed in a radial manner around the bracket.

The above described objects, features, and advantages of the invention will be apparent from the description and appended claims

An embodiment of the present invention provides a fuel cell module in which a non-planar structure is formed on one or more components inside the fuel cell module, thereby enabling a contact of the fuel cell module during assembly or after assembly. force. In an embodiment, an arc-shaped or polygonal structure protruding toward the membrane electrode group may be formed on the current collecting member or other components. The contact force may strengthen the component under the cooperation of system design, practical application or other factors. Electrical conductivity, uniformity of electrical conductivity, and/or reliability under prolonged use.

2A is an exploded view of a fuel cell module according to an embodiment of the present invention. 2B is a side view of a fuel cell module according to an embodiment of the present invention. The partial structure of the fuel cell module before and after assembly can be seen from FIG. 2B. As shown in FIG. 2A and FIG. 2B, the fuel cell module F in this embodiment may include, for example, two interface units K and one flow field plate 10, wherein the flow field plate 10 may be disposed or coupled to the two interface units K. between. A plurality of flow passages C are formed on the flow field plate 10, wherein the flow passage C can be formed on one side or both sides of the flow field plate 10. The flow passage C of the embodiment is formed on the opposite side of the flow field plate 10. And facing the aforementioned interface unit K, respectively.

It should be understood that at least one of the two interface units K includes a sealing element 20, a membrane electrode assembly 301, one or more gas diffusion layers 302, and two current collecting elements 303 directly or indirectly coupled to each other, 304. In addition, the interface unit K may further include a carrier board 40, which is directly or indirectly coupled to the collector element 304 (as shown in FIG. 2A). In this embodiment, the gas diffusion layer 302 may be coupled to the opposite side of the membrane electrode assembly 301 in a direct or indirect manner, for example, by hot pressing, injection omding, or applying an adhesive. The gas diffusion layer 302 and the membrane electrode group 301 are bonded to each other. On the other hand, both sides of the above-described current collecting elements 303, 304 are coupled to the gas diffusion layer 302 and the sealing member 20, respectively. In one embodiment, the sealing element 20 is further coupled to the current collecting elements 303 and 304 by means of hot pressing, injection molding or application of an adhesive, and is also transparently pressed on both sides of the membrane electrode assembly 301. The sealing element 20 is coupled to each other.

It should be understood that the foregoing current collecting member 304 is disposed on the carrier plate 40 and protrudes toward the membrane electrode group 301; in addition, on one or more of the foregoing elements (for example, the membrane electrode group shown in FIGS. 2A and 2B) 301. The gas diffusion layer 302, the current collecting members 303, 304, and the sealing member 20) may also be formed with a non-planar structure, thereby providing a contact force when assembling the fuel cell module. In the present embodiment, the contact force can be continuously retained inside the fuel cell module even after the fuel cell module is assembled.

Continuing to refer to FIG. 2A, a plurality of flow channels C are formed on both sides of the flow field plate 10, wherein the flow channels C are respectively facing the interface unit K located on both sides of the flow field plate 10, and the flow in this embodiment The field plate 10 has a rectangular or substantially rectangular structure. Further, the flow field plate 10 further includes a first channel 11 and a second channel 12 (shown in FIG. 2D) communicating with the flow channel C.

Referring to FIG. 2D, a reactive fluid or other fluid may enter the flow field plate 10 from the inlet 11a of the first manifold 11, wherein a portion of the fluid passes through the flow channel C and is exposed to the flow field through the flow channel C. The surface of the plate 10, which corresponds to the film on the interface unit K, allows the fuel cell to undergo an electrochemical reaction. In other words, one of the exposed side channels of the flow path C is coupled to the film on the interface unit K; in addition, the partially or fully reacted fluid can be discharged from the flow field plate 10 via the outlet 12a at the end of the second manifold 12.

As described above, the flow field plate 10 may include a first manifold 11 , a second manifold 12 , and a flow channel C communicating with the first and second channels 11 , 12 , wherein the flow channel C is coupled to the first Between the second lanes 11, 12 (as shown in Figure 2D). An inlet 11a is formed at the right end of the first lane 11, and the first channel 11 extends toward a first direction (for example, from the right side of the flow field plate 10 to the left side of the flow field plate 10), so that the fluid can be extended. The flow field plate 10 is entered in the direction indicated by the arrow while at least a portion of the fluid is directed to flow in the aforementioned first direction. On the other hand, an outlet 12a is formed at the left end of the second manifold 12 for releasing some or all of the reacted fluid, wherein the second manifold 12 extends toward a second direction (e.g., extending from the right side of the flow field plate 10). To the left side of the flow field plate 10, such that at least a portion of the fluid can pass through the flow field plate 10 in the aforementioned second direction, wherein the first and second directions are substantially parallel to a fluid distribution plane defined by the flow channel C ( Fluid distribution plane). It is to be noted that the flow path C shown in FIG. 2A extends in at least two directions (vertical and horizontal directions) and is substantially parallel to the aforementioned fluid distribution plane.

Referring to FIG. 2D, the first first lane 11 can guide the fluid into the flow channel C via one or more discharge holes (for example, the discharge holes between the first manifold 11 and each of the flow channels C). The second manifold 12 can also direct fluid within the flow channel C to the second manifold 12 via one or more exhaust ports (eg, the inflow holes between the second manifold 12 and each of the flow channels C). . It should be understood that each of the flow passages C in the 2A, 2D drawings is coupled between the first and second manifolds 11, 12 for guiding at least a portion of the fluid in the first manifold 11 into the second Fragmentation 12. In one embodiment, the flow channel C has a plurality of segments extending in at least two directions and substantially parallel to the fluid distribution plane and the corresponding contact surface on the interface unit K. Thereby, a portion of the fluid can exit the flow field plate 10 through the second channel 12 through the flow channel C, wherein the first and second channels 11, 12 are substantially parallel to the aforementioned fluid distribution plane.

2C is a side view of the fuel cell module according to an embodiment of the present invention, wherein the fuel cell module F is mainly composed of a flow field plate 10 and an interface unit K, in which the interface unit K and the flow field plate are assembled. At 10 o'clock, the curved or non-planar member in the interface unit K can be flattened or partially flattened, and the aforementioned contact force can be increased by deformation of the non-planar member.

Referring to FIG. 3, the sealing member 20 may be coated on the outside of the current collecting member 303 or bonded to the current collecting member 303 by means of injection molding, hot pressing or application of an adhesive; in addition, the sealing member 20 may also be By bonding to the membrane electrode assembly 301 by means of hot pressing, the flow field plate 10 and the membrane electrode assembly 301 can also be tightly coupled to each other to prevent fluid leakage. It should be particularly noted that a non-planar structure protruding toward the membrane electrode assembly 301 can be formed on the current collecting members 303, 304, whereby the current collecting member 303 can be brought into contact with the gas diffusion layer 302 during assembly. Force (also toward the membrane electrode assembly 301). The interface unit K is assembled before the assembly (as shown by the interface unit K on the left side of FIG. 2B), and the contact force is a lateral force in the right direction; conversely, when the interface unit K is assembled (as shown on the right side of FIG. 2B) The interface unit K) has a contact force which is a lateral force in the left direction.

4A is a schematic view of the current collecting member 304 disposed on the carrier board 40. As shown in FIG. 4A , the carrier plate 40 is, for example, a support frame or an outer frame disposed on the outer side of the flow field plate for stacking the current collecting elements 304 , wherein the current collecting member 304 is exposed on the carrier plate 40 . The upper opening allows the fuel cell module to efficiently perform fuel exchange or electrochemical reactions.

FIG. 4B is a schematic view showing the edge 3041 of the current collecting member 304 of the embodiment of the present invention being received in the recess 41 of the carrier board 40. In this embodiment, the non-planar structure on the interface unit K can be joined to other elements in the interface unit K by external tools or various bonding techniques as described above. For example, the edge 3041 of the aforementioned non-planar structure may be formed into a specific shape, such as a protruding structure, a flange, a hook, or a positioning structure corresponding to other elements in the interface unit K. It should be understood that the edge structure of the foregoing specific shape may be formed on one side or both sides of the current collecting member 304 (for example, the upper and lower sides of the current collecting member 304 in FIG. 2B); similarly, the edge of the specific shape The structure may also be formed on one or both sides of the current collecting element 303 in FIG. 2A.

The current collecting member 304 in Fig. 4B has a convex arc-like structure, wherein the edge of the arc-shaped structure may be formed with a protruding structure, a hook, a bent structure, a flange, an L-shaped or an angled structure. In one embodiment, one or more of the edges 3041 (only the upper side of the collector element 304 is depicted in FIG. 4B) are engaged with adjacent members (eg, the carrier plate 40) during assembly. Within the recess 41, one or more edge structures shown in FIG. 4A are tied to or near the upper side of the collector element 304.

Continuing to refer to FIG. 4B, the edge 3041 of the foregoing current collecting member 304 can slide in the groove 41 when the current collecting member 304 and the carrier plate 40 are pressed against each other or pressed toward the membrane electrode assembly 301 (eg, 2A). In the direction of the arrow A in the figure, the aforementioned edge 3041 slides toward the outside of the groove 41. 4C is a cross-sectional view in the direction of X1-X2 in FIG. 4A, in which the edge 3041 is slid toward the outside of the groove 41, it should be understood that the size of the aforementioned edge 3041 and the groove 41 and the edge 3041 slide in the groove 41. The travel distance can be adjusted according to different design requirements, so that the contact force between the various components can be appropriately controlled. In an embodiment, the current collecting member 304 can be flattened or partially flattened when assembled, and can provide a contact force to other adjacent components when the current collecting member 304 is flattened, thereby promoting the fuel cell mode. The close contact between the internal elements of the group F, for example, can strengthen the contact between the gas diffusion layer 302 and the current collecting element 304 while reducing the contact resistance between the elements. It should be particularly noted that when the edge structure of the specific shape is not adopted, the interface unit K can still allow one or more non-planar members to be flattened or partially flattened (for example, elastically in a vertical or horizontal direction) Extendingly, the aforementioned mechanism design can be determined according to the flexibility of the internal component material or the multilayer structure when the interface unit K is assembled or pressed.

FIG. 5A is a side view of the current collecting member 304 according to an embodiment of the present invention, wherein the current collecting member 304 has an arc structure, and other elements in the fuel cell module F may also form a similar non-planar structure to strengthen the inter-element structure. Contact force. 5B is a side view of the current collecting member 304 of another embodiment, wherein the current collecting member 304 has a polygonal structure, and the polygonal structure has a plane 3042 which is substantially parallel to the membrane electrode assembly 301 in FIG. 2A. And a gas diffusion layer 302. It should be understood that the foregoing plane 3042 can provide good contact between the gas diffusion layer 302 and the collector element 304, wherein a distinct angle shape is formed on the upper and lower sides of the plane 3042, but the actual application can still be The upper and lower sides of the plane 3042 are formed in an arc shape or other shape.

FIG. 6 is a schematic diagram of a fuel cell system according to an embodiment of the present invention, wherein a plurality of fuel cell modules F are mounted on a bracket H and/or a base B, thereby forming a fuel cell system. For example, the bracket H can be coupled to one side of the fuel cell module F. At this time, the bracket H serves as a support structure for mounting the fuel cell module F on the fuel cell system, wherein the bracket H has a passage H21. a first channel for allowing a fluid to enter the interior of each fuel cell module F (or for discharging fluid through a second manifold of each fuel cell module F). The base B is used as a fluid distribution structure, wherein the base B is coupled between the fuel cell module F and the passage H21 of the bracket H for distributing and guiding the fluid into the fuel cell module F. It should be particularly noted that the base B may have an inlet hole (or an outlet hole) connected to the passage H21 of the bracket H and a plurality of outlet holes (or inlet holes) connected to the fuel cell module F, and the fuel cell mold. Group F is arranged around the support H in a radial manner.

On the other hand, the fuel cell module F may be fixed to the base B while being disposed around the bracket H in a radial manner. It should be understood that the fluid can enter through the passage H21 of the bracket H and sequentially flow through the bracket H and the base B to reach the fuel cell module F, and then the fluid can be discharged from the second manifold 12 of the fuel cell module F (eg, 6 is shown by the direction of the arrow).

In summary, an embodiment of the present invention provides a fuel cell module in which a current collecting component or other components inside the fuel cell module are formed with a non-planar structure, which can improve internal components of the fuel cell module. The contact force allows for close contact between the components (for example, between the current collecting member and the gas diffusion layer). In addition, in an embodiment, a fuel cell system is further provided, which mainly includes a bracket and/or a base for carrying a plurality of fuel cell modules, which not only has the advantages of small size and easy assembly, but also can be widely applied. In various fields such as electronics, vehicles, military equipment or aerospace industry.

Although the present invention has been disclosed above in the foregoing embodiments, it is not intended to limit the invention. Those skilled in the art having the ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

10. . . Flow field plate

11. . . First lane

11a. . . Entrance

12. . . Second lane

12a. . . Export

20. . . Sealing element

301. . . Membrane electrode set

302. . . Gas diffusion layer

303, 304. . . Collector

3041. . . edge

3042. . . flat

40. . . Carrier board

41. . . Groove

400. . . Single cell structure

401, 402. . . Flow field plate

403, 404. . . Runner

405, 406. . . Gas diffusion layer

407, 408. . . Catalyst layer

409. . . Proton exchange membrane

410. . . Membrane electrode set

B. . . Base

C. . . Runner

F. . . Fuel cell module

K. . . Interface unit

H. . . support

H21. . . aisle

Figure 1 is a schematic view showing a conventional fuel cell;

2A and 2B are partial exploded views of a fuel cell module according to an embodiment of the present invention;

2C is a side view showing the assembled fuel cell module of FIGS. 2A and 2B after assembly;

2D is a schematic view showing a flow field plate having a plurality of communicating passages and first and second manifolds according to an embodiment of the present invention;

Figure 3 is a schematic view showing the sealing member of the embodiment of the present invention wrapped around the current collecting member;

4A is a schematic view showing a current collecting component mounted on a carrier board according to an embodiment of the present invention;

4B is a schematic view showing the edge of the current collecting element of the embodiment of the present invention when it is coupled to the groove of the carrier plate;

Figure 4C is a cross-sectional view taken along the line X1-X2 in Figure 4A;

5A is a schematic view showing a current collecting element according to an embodiment of the present invention;

Figure 5B is a view showing a current collecting element of another embodiment of the present invention;

Fig. 6 is a view showing a fuel cell system according to an embodiment of the present invention.

10. . . Flow field plate

11. . . Entrance

20. . . Sealing element

301. . . Membrane electrode set

302. . . Gas diffusion layer

303, 304. . . Collector

40. . . Carrier board

C. . . Runner

F. . . Fuel cell module

K. . . Interface unit

Claims (25)

A fuel cell module comprising: a membrane electrode assembly having at least one membrane for performing a fuel cell reaction; two gas diffusion layers respectively coupled to opposite sides of the membrane electrode assembly; and two current collecting components, respectively The gas diffusion layers are coupled to each other; two sealing elements are respectively coupled to the current collecting elements; and a first-rate field plate coupled to the first side of the film electrode group, wherein at least one of the gas diffusion layers At least one of the collector elements and at least one of the sealing elements are located between the first side of the membrane electrode assembly and the flow field plate; wherein the flow field plate has a first-class track, One of the exposed sides of the flow path is coupled to the at least one film in the set of membrane electrodes; wherein the membrane electrode set, the gas diffusion layers, the current collecting elements, and the sealing elements are assembled prior to assembly At least one of the electrode set, the gas diffusion layers, the collector elements, and the sealing elements form a non-planar structure, and at least a portion of the non-planar structure is in the fuel cell module Flattened during loading. The fuel cell module of claim 1, wherein at least one of the collector elements is formed with the non-planar structure protruding toward the membrane electrode assembly, thereby causing at least one of the collector elements One provides a contact force to the corresponding gas diffusion layers. The fuel cell module according to claim 1, wherein the sealing members are joined to the current collecting members by injection molding, heat pressing or application of an adhesive. The fuel cell module of claim 1, wherein the gas diffusion layers are coupled to the opposite side of the membrane electrode assembly by a hot press method. The fuel cell module of claim 1, wherein the sealing elements are coupled to the opposite side of the membrane electrode assembly by a hot press method. The fuel cell module according to claim 1, wherein the non-planar structure is an arc-like structure protruding toward the membrane electrode assembly. The fuel cell module according to claim 1, wherein the non-planar structure is a polygonal structure protruding toward the membrane electrode assembly. The fuel cell module of claim 7, wherein the polygonal structure has a plane parallel to the membrane electrode assembly. The fuel cell module of claim 1, wherein the fuel cell module further comprises a carrier plate, wherein the carrier plate has a recess for receiving an edge of the non-planar structure. The fuel cell module of claim 9, wherein the edge slides into the groove when the non-planar structure is pressed by an external force. The fuel cell module of claim 1, wherein the flow field plate further comprises: a first manifold extending toward a first direction and having an inlet and at least one discharge hole, wherein a fluid is passed through the inlet Entering the first lane, the first lane can guide at least a portion of the fluid to move in the first direction, and at least a portion of the flow system is discharged from the first lane by the at least one outlet hole a second channel extending in a second direction and having an outlet and an inflow opening for discharging at least a portion of the fluid, wherein At least a portion of the flow system enters the second manifold via the inflow aperture, and the second manifold can direct at least a portion of the fluid to move in the second direction; wherein the flow channel is coupled to the Between the first and second channels, and connecting the at least one discharge hole and the inflow hole for distributing and guiding at least a portion of the fluid, wherein the flow path has a plurality of segments, the segments being oriented toward The at least two directions extend and are parallel to a fluid distribution plane, wherein at least a portion of the fluid passes through the flow channel and the inflow aperture, and the first and second directions are parallel to the fluid distribution plane. The fuel cell module of claim 1, wherein the fuel cell module further comprises at least one base or support frame coupled to an edge of the fuel cell module, thereby comprising a plurality of the fuels A support structure for a fuel cell system of one of the battery modules. A fuel cell module comprising: a membrane electrode assembly having at least one membrane for performing a fuel cell reaction; two gas diffusion layers respectively coupled to opposite sides of the membrane electrode assembly; and two current collecting components, respectively The gas diffusion layers are coupled to each other; two sealing elements are respectively coupled to the current collecting elements; and a first-rate field plate coupled to the first side of the film electrode group, wherein at least one of the gas diffusion layers At least one of the collector elements and at least one of the sealing elements are located between the first side of the membrane electrode assembly and the flow field plate; wherein the flow field plate has a first-class track, One of the exposed sides of the flow channel is coupled to the at least one film in the membrane electrode assembly; Wherein at least one of the collector elements forms a non-planar structure and at least a portion of the non-planar structure before the film electrode assembly, the gas diffusion layers, the collector elements, and the sealing elements are assembled It is flattened during assembly of the fuel cell module. The fuel cell module of claim 13, wherein at least one of the collector elements is formed with the non-planar structure protruding toward the membrane electrode group, whereby at least one of the collector elements is One provides a contact force to the corresponding gas diffusion layers. The fuel cell module according to claim 13, wherein the sealing members are joined to the current collecting members by injection molding, heat pressing or application of an adhesive. The fuel cell module according to claim 13, wherein the non-planar structure is an arc-like structure protruding toward the membrane electrode assembly. The fuel cell module according to claim 13, wherein the non-planar structure is a polygonal structure protruding toward the membrane electrode assembly. The fuel cell module of claim 17, wherein the polygonal structure has a plane parallel to the membrane electrode assembly. The fuel cell module of claim 13, wherein the fuel cell module further comprises a carrier plate, wherein the carrier plate has a recess for receiving an edge of the non-planar structure. The fuel cell module of claim 19, wherein the edge slides into the groove when the non-planar structure is pressed by an external force. The fuel cell module of claim 13, wherein the flow field plate further comprises: a first lane extending toward a first direction and having an inlet; At least one discharge hole, wherein a fluid enters the first manifold from the inlet, and the first channel can guide at least a portion of the fluid to move in the first direction, and at least a portion of the flow system is The discharge hole exits the first manifold; a second channel extends toward a second direction and has an outlet and an inflow hole for discharging at least a portion of the fluid, wherein at least a portion of the flow The system enters the second manifold via the inflow hole, and the second channel can guide at least a portion of the fluid to move in the second direction; wherein the flow channel is coupled to the first and second channels And connecting the discharge hole and the inflow hole for distributing and guiding at least a portion of the fluid, wherein the flow channel has a plurality of segments extending in at least two directions and parallel to one a fluid distribution plane, wherein at least a portion of the fluid passes through the flow channel and the inflow aperture, and the first and second directions are parallel to the fluid distribution plane. The fuel cell module of claim 13, wherein the fuel cell module further comprises at least one base or support frame coupled to an edge of the fuel cell module, thereby comprising a plurality of the fuels A support structure for a fuel cell system of one of the battery modules. A fuel cell system comprising: a support for supporting a structure of the fuel cell system, wherein the support has a passage to provide a fluid; and a plurality of fuel cell modules, wherein each of the fuel cell modules One side is fixed to the bracket, and the fuel cell modules are disposed around the bracket in a radial manner. The fuel cell system of claim 23, wherein The fuel cell system further includes a base coupled to the fuel cell modules and the passage of the bracket to distribute the fluid to the fuel cell modules. The fuel cell system of claim 24, wherein the base is in communication with the passage of the bracket to distribute the fluid to the fuel cell modules.