Fuel cell separator and fuel cell separator assembly including same

Abstract

A fuel cell separator includes at least one separator provided with a plurality of manifolds and a reaction region, in which the at least one separator includes a molded portion protruding from a reaction surface of the at least one separator toward a cooling surface of the at least one separator, the molded portion extending in a first direction in which the manifolds are arranged on one side of the at least one separator, and the molding part is arranged at a position where the gasket arranged on the reaction surface is discontinuously arranged in the first direction.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a fuel cell separator having a protruding structure for obtaining airtight performance of a unit cell constituting a fuel cell stack, and to a fuel cell separator assembly including the same. BACKGROUND

[0002] A fuel cell is a power generation device configured to convert chemical energy of a fuel into electrical energy through an electrochemical reaction in a stack thereof, and can be used to provide electrical energy for industrial, home, and vehicle driving, as well as to power small electronic products such as portable devices. Recently, the use of fuel cells as a high-efficiency clean energy source is gradually increasing.

[0003] Each unit cell constituting a typical fuel cell stack includes a membrane electrode assembly (MEA) located at an innermost position thereof. The membrane electrode assembly is composed of a polymer electrolyte membrane that can transport hydrogen protons and catalyst layers (i.e., a fuel electrode (anode) and an air electrode (cathode)) applied on both sides of the electrolyte membrane so that hydrogen gas and oxygen gas can react.

[0004] A pair of gas diffusion layers (GDLs) are stacked on both outer surfaces of the membrane electrode assembly, and a separator assembly having a flow field (formed to supply fuel and discharge water generated by a reaction) is disposed on the outer surfaces of the gas diffusion layers with a gasket interposed therebetween. The separator assembly is formed by joining an anode separator disposed on the anode and a cathode separator disposed on the cathode to face each other. The anode separator and the cathode separator are joined and formed in one body so that manifolds communicate with each other and are configured in a similar shape so that reaction surfaces are disposed at the same positions thereof. In addition, an end plate is attached to each of two outermost surfaces of the stacked unit cells through the end plate to support and fix each of the above-described configurations.

[0005] The gasket is disposed along the periphery of the plurality of manifolds, but includes a plurality of support portions extending toward a central region of the separator. The gasket includes a first gasket surrounding the periphery of the plurality of manifolds, a second gasket disposed along an edge portion of the separator, and a support portion extending in a direction from the manifold toward the central region of the separator. The support portion disposed on the anode separator and the support portion on the cathode separator are disposed at vertically overlapping positions. Although the surface pressure of the separator stack structure is relatively high in a region in which the support portions overlap, there is a problem in that the surface pressure of the separator stack structure is lowered in a region in which the support portions are not disposed.

[0006] The information included in the Background section of the present disclosure is only for the purpose of enhancing the understanding of the general background of the present disclosure and should not be construed as acknowledging that the information is prior art known to those skilled in the art. SUMMARY

[0007] Various aspects of the present disclosure aim to provide a fuel cell separator including a profile for obtaining airtightness of unit cells constituting a fuel cell stack and reinforcing the unit cells, and a fuel cell separator assembly including the same.

[0008] An exemplary embodiment of the present disclosure provides a fuel cell separator including at least one separator provided with a plurality of manifolds and a reaction area, wherein the at least one separator includes a profile protruding in a direction from a reaction face of the at least one separator toward a cooling face of the at least one separator, the profile extends in a first direction in which the plurality of manifolds arranged on one side of the at least one separator are aligned, and the profile is disposed at a position where a gasket arranged on the reaction face is discontinuously arranged in the first direction.

[0009] In an exemplary embodiment of the present disclosure, the profile includes a recess, which is a region in which the reaction face is recessed, and a sealing portion is disposed in the recess.

[0010] In an exemplary embodiment of the present disclosure, the gasket can include a main gasket arranged along a periphery of the plurality of manifolds and a support portion extending from the main gasket toward the reaction area, and the profile can be disposed at a position where the plurality of support portions are aligned in the first direction.

[0011] In an exemplary embodiment of the present disclosure, the at least one separator can further include a modified profile protruding toward the support portion, and the profile and the modified profile can be alternately arranged in the first direction.

[0012] In an exemplary embodiment of the present disclosure, the profile can be arranged between two adjacent support portions of the plurality of support portions, and based on the first direction, the modified profile can extend a width of the support portion.

[0013] In an exemplary embodiment of the present disclosure, the at least one separator includes an additional profile disposed at a corresponding position of the main gasket arranged between the reaction area and each manifold, and the additional profile protrudes from the cooling face toward the reaction face.

[0014] In an exemplary embodiment of the present disclosure, a plurality of profiles are disposed between the reaction area and each manifold of the plurality of manifolds through which a reaction gas flows, and based on the first direction, a length of each profile is greater than a length of each manifold disposed at a corresponding position.

[0015] Another exemplary embodiment of the present disclosure provides a fuel cell separator assembly including: a first separator including a first protrusion protruding from a reaction surface toward a cooling surface; a second separator including a second protrusion protruding from the reaction surface toward the cooling surface; a first gasket disposed on the reaction surface of the first separator; a second gasket disposed on the reaction surface of the second separator; and a third gasket disposed on the cooling surface of the second separator, wherein the first protrusion and the second protrusion extend in a first direction in which a plurality of manifolds are arranged on one side of the first separator or the second separator.

[0016] In an exemplary embodiment of the present disclosure, the first protrusion is disposed at a position where the first gasket is discontinuously arranged in the first direction, and the second protrusion is disposed at a position where the second gasket is discontinuously arranged in the first direction.

[0017] In an exemplary embodiment of the present disclosure, the second separator can include a third protrusion protruding from the cooling surface toward the reaction surface.

[0018] In an exemplary embodiment of the present disclosure, the third protrusion can be disposed closer to the plurality of manifolds than the second protrusion.

[0019] In an exemplary embodiment of the present disclosure, the first gasket can include a first main gasket disposed along a periphery of the plurality of manifolds and a first support portion extending from the first main gasket toward a reaction region of the first separator, the second gasket can include a second main gasket disposed along a periphery of the plurality of manifolds and a second support portion extending from the second main gasket toward a reaction region of the second separator, the first protrusion can be disposed at a position where a plurality of the first support portions are arranged in the first direction, and the second protrusion can be disposed at a position where a plurality of the second support portions are arranged in the first direction.

[0020] In an exemplary embodiment of the present disclosure, the second separator can include a third protrusion protruding from the cooling surface toward the reaction surface, and the third protrusion can be disposed at a position overlapping the second main gasket.

[0021] In an exemplary embodiment of the present disclosure, the third gasket can be disposed on the second protrusion, and the second gasket can be disposed on the third protrusion.

[0022] In an exemplary embodiment of the present disclosure, a portion of the second protrusion is exposed through the third gasket, the first separator and the second separator can be alternately stacked, and the portion of the second protrusion exposed through the third gasket can be in contact with the first protrusion protruding toward the cooling surface of the second separator.

[0023] In an exemplary embodiment of the present disclosure, a portion of the third protrusion can be exposed through the second gasket, and the exposed portion of the third protrusion can be in contact with a sub-gasket disposed between the first separator and the second separator or the first gasket disposed on the first separator.

[0024] In an exemplary embodiment of the present disclosure, the first separator further includes a fourth shaped portion protruding from the cooling face toward the reaction face, and the fourth shaped portion can be disposed at a position overlapping the first main gasket.

[0025] In an exemplary embodiment of the present disclosure, the first separator can include a flow guide hole through which a reaction gas flows, and the flow guide hole can be disposed between the first shaped portion and the fourth shaped portion.

[0026] In an exemplary embodiment of the present disclosure, the first shaped portion includes a first recessed portion which is a region in which the reaction face of the first separator is recessed, the second shaped portion includes a second recessed portion which is a region in which the reaction face of the second separator is recessed, and the first recessed portion and the second recessed portion are filled with an elastic material.

[0027] The methods and apparatuses of the present disclosure have other features and advantages which will be apparent from or that will be more readily apparent from the accompanying drawings and the following detailed description of the exemplary embodiments, which are incorporated herein in connection with explaining certain principles of the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 shows a laminated structure of a fuel cell stack according to an exemplary embodiment of the present disclosure;

[0029] Figure 2 shows a reaction face of an anode separator according to an exemplary embodiment of the present disclosure;

[0030] Figure 3 shows a cooling face of an anode separator according to an exemplary embodiment of the present disclosure;

[0031] Figure 4 shows a reaction face of a cathode separator according to an exemplary embodiment of the present disclosure;

[0032] Figure 5 shows a cooling face of a cathode separator according to an exemplary embodiment of the present disclosure;

[0033] Figure 6 is a cross-sectional view along line A-A' in Figure 2 ;

[0034] Figure 7 is a cross-sectional view along line B-B' in Figure 2 ;

[0035] Figure 8 is a cross-sectional view along line C-C' in Figure 4 ;

[0036] Figure 9 is a cross-sectional view along line D-D' in Figure 4a cross-sectional view along line D-D' in

[0037] Figure 10 is a cross-sectional view of a separator assembly according to an exemplary embodiment of the present disclosure;

[0038] Figure 11 shows a modification of the region A in Figure 2

[0039] Figure 12 shows a formation provided on a separator in Figure 11

[0040] Figure 13 and Figure 14 shows a modification of the formation applied to a cathode separator;

[0041] Figure 15 is a cross-sectional view of a separator assembly to which the formation in Figure 13

[0042] Figure 16 shows a modification of a first gasket arranged on an anode separator according to an exemplary embodiment of the present disclosure;

[0043] Figure 17 shows a modification of a second gasket arranged on a cathode separator according to an exemplary embodiment of the present disclosure; and

[0044] Figure 18 is a cross-sectional view along line E-E' in Figure 16 and Figure 17

[0045] It will be understood that the drawings are not necessarily to scale, presenting a somewhat simplified representation of various features illustrative of the basic principles of the present disclosure. Specific design features (including, for example, specific dimensions, orientations, locations and shapes) of the present disclosure as included herein will be determined in part by the particular intended application and use environment.

[0046] In the drawings, like reference numerals refer to like parts throughout the various drawings of the present disclosure. DETAILED DESCRIPTION

[0047] Reference will now be made in detail to various embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings and described below. While the present disclosure will be described in conjunction with the exemplary embodiments, it will be understood that the description is not intended to limit the present disclosure to these exemplary embodiments. On the contrary, the present disclosure is intended to cover various alternatives, modifications, equivalents and other embodiments, which can be included within the spirit and scope of the present disclosure as defined by the appended claims. ​​​​

[0048] The advantages and features of the present disclosure and a method of achieving the same will become apparent from the following detailed description of various exemplary embodiments with reference to the accompanying drawings. However, the present disclosure is not limited to the exemplary embodiments included below, but can be implemented in various different forms. These embodiments are provided merely to make the disclosure complete and sufficient and to fully convey the scope of the present disclosure to those skilled in the art, and the present disclosure is limited only by the scope of the claims. Throughout the specification, like drawing reference numerals denote like components.

[0049] Further, the reason that the names of components herein are divided into first, second, and the like is to distinguish them when the component names are the same, and the order in the following description is not limited to this order.

[0050] The detailed description is intended to illustrate the present disclosure. It should be understood that the following description is intended to show exemplary embodiments of the present disclosure, and the present disclosure can be used in various other combinations, variations, and environments. Changes or modifications can be made within the scope of the concepts of the present disclosure, within the scope equivalent to the described disclosure, and / or within the scope of the art or knowledge of the art. These embodiments are used to describe the best state of implementing the technical idea of the present disclosure, but various modifications can be made thereto as needed for the specific application field and use of the present disclosure. Therefore, the detailed description is not intended to limit the present disclosure to the exemplary embodiments of the present disclosure included. In addition, the appended claims should be interpreted to include other embodiments.

[0051] Figure 1 A stacked structure of a fuel cell stack according to an exemplary embodiment of the present disclosure is shown.

[0052] Referring to Figure 1 , the fuel cell stack can be composed of a plurality of unit cells. Each unit cell can include a membrane electrode assembly (MEA) 10, a pair of gas diffusion layers (GDLs) 20 disposed on the membrane electrode assembly 10, a pair of separators 100, 200 disposed on the pair of gas diffusion layers 20, and a gasket structure 300 disposed on the pair of separators 100, 200.

[0053] The membrane electrode assembly 10 can be composed of a polymer electrolyte membrane 11 configured to transport protons and catalyst layers (i.e., an anode 12 and a cathode 13) applied to respective sides of the electrolyte membrane 11 so that hydrogen and oxygen can react.

[0054] The pair of gas diffusion layers 20 can be stacked on both outer surfaces of the membrane electrode assembly 10 where the anode 12 and the cathode 13 are located. On the outer surfaces of the gas diffusion layers 20, the pair of separators 100, 200 having a flow field formed to supply fuel and discharge water generated by reaction can have a gas-tight gasket structure 300 disposed therebetween.

[0055] The pair of separators 100, 200 can include an anode separator 100 disposed on an anode and a cathode separator 200 disposed on a cathode. Hydrogen and air as reaction gases can be introduced into the fuel cell stack through the anode separator 100 and the cathode separator 200, whereby electric energy can be generated by electrochemical reactions in the membrane electrode assembly 10, and water (hereinafter referred to as "product water") can be generated as a byproduct thereof. Each of the pair of separators 100, 200 can include a reaction face through which a reaction gas flows and a cooling face through which product water flows.

[0056] Hydrogen, air as reaction gases, and a coolant for cooling are supplied to the fuel cell stack. The reaction gases and the coolant flowing in the fuel cell stack can be introduced or discharged through manifolds formed in the separators 100, 200.

[0057] The anode separator 100 and the cathode separator 200 are joined and formed as one body, whereby the manifolds can be in communication with each other, and reaction regions of the anode separator 100 and the cathode separator 200 can be formed at positions facing each other. In the anode separator 100 and the cathode separator 200, the manifolds and the reaction regions are spaces in which reaction gases or a coolant are introduced, discharged, or flow, and for gas tightness, a seal line along the periphery of the manifolds can be formed by the gasket structure 300.

[0058] The end plate 50 can be attached to each of two outermost surfaces of the unit cell to support and fix the unit cell.

[0059] Figure 2 A reaction face of an anode separator according to an exemplary embodiment of the present disclosure is illustrated, Figure 3 A cooling face of an anode separator according to an exemplary embodiment of the present disclosure is illustrated.

[0060] Reference Figure 2 and Figure 3 The anode separator 100 can include a reaction face 100a and a cooling face 100b. The reaction face 100a of the anode separator 100 can include a reaction region 110 in which electrochemical reactions of reaction gases occur. The anode separator 100 can be provided with a plurality of manifolds 101, 102, 103, 104, 105, 106 through which reaction gases or a coolant are introduced or discharged. The anode separator 100 can be provided with a first flow guide hole 120 for introducing reaction gases supplied from the manifolds 101, 102, 103, 104, 105, 106 into the reaction region 110 and a second flow guide hole 130 for discharging reaction gases from the reaction region 110.

[0061] For example, the manifolds 101, 102, 103, 104, 105, 106 can include an inlet manifold 101, 105 through which a reaction gas is introduced, an outlet manifold 102, 104 through which a reaction gas is discharged, and a coolant manifold 103, 106 through which a coolant is introduced or discharged. The inlet manifold 101, 105 can include a first inlet manifold 101 into which hydrogen gas is introduced and a second inlet manifold 105 into which oxygen gas is introduced. The outlet manifold 102, 104 can include a first outlet manifold 104 from which hydrogen gas is discharged and a second outlet manifold 102 from which oxygen gas is discharged.

[0062] The first gasket 310 can be disposed on the reaction face 100a of the anode separator 100. The first gasket 310 can include a first main gasket 311 disposed along the periphery of the manifolds 101, 102, 103, 104, 105, 106 and first support portions 315 extending from the first main gasket 311 toward the reaction region 110. A plurality of first support portions 315 can be disposed in a space between each of the manifolds 101, 102, 103, 104, 105, 106 and the reaction region 110. First flow holes 120 can be formed between the first support portions 315 extending from the first inlet manifold 101 toward the reaction region 110. Second flow holes 130 can be formed between the first support portions 315 extending from the first outlet manifold 104 toward the reaction region 110.

[0063] The anode separator 100 can include a first shaped portion 150 protruding in a direction from the reaction face 100a toward the cooling face 100b. The first shaped portion 150 can be a portion in which the anode separator 100 is bent. The first shaped portion 150 can protrude onto the cooling face 100b of the anode separator 100. By the first shaped portion 150, a first recess 155, which is a recessed portion, can be formed on the reaction face 100a of the anode separator 100.

[0064] The first shaped portion 150 can extend in a first direction in which the manifolds 101, 102, 103, or 104, 105, 106 disposed on the same side with reference to the reaction region 110 or disposed on the same side of the anode separator 100 are arranged. The first shaped portion 150 can be disposed at a position on the reaction face 100a at which the first gasket 310 is not continuously disposed. The first shaped portion 150 can be disposed at a position on the reaction face 100a at which the first support portion 315 is disposed. The first support portion 315 can be discontinuously arranged on the first recess 155 formed on the reaction face 100a by the first shaped portion 150. The first support portion 315 can extend in a direction perpendicular to the first direction.

[0065] The plurality of first shaped portions 150 or the plurality of first recessed portions 155 can be disposed in a space between the reaction region 110 and each of the manifolds 101, 102, 103, 104, 105, 106 among the manifolds 101, 102, 104, 105 through which the reaction gas flows. For example, four first shaped portions 150 and four first recessed portions 155 can be disposed. The first shaped portion 150 or the first recessed portion 155 can not be formed in a space between the coolant manifolds 103, 106 and the reaction region 110. The first shaped portion 150 or the first recessed portion 155 can be located in the vicinity of the reaction region 110 based on the disposition positions of the first flow guide hole 120 and the second flow guide hole 130. Based on the first direction, the length of each of the first shaped portions 150 can be greater than the length of each of the manifolds 101, 102, 104, 105 disposed in the corresponding position. For example, based on the first direction, the length of the first shaped portion 150 disposed adjacent to the first inlet manifold 101 can be greater than the length of the first inlet manifold 101. The first shaped portions 150 disposed in the first direction can be spaced apart from each other.

[0066] According to the exemplary embodiment of the present disclosure, the warping of the anode separator 100 can be reduced by the first shaped portion 150 including a curved shape. Although there is a problem in which the surface pressure of the unit cell becomes low in a region adjacent to the manifold 101, 102, 103, 104, 105, 106 through which the reaction gas or the coolant flows in and out, without the first support portion 315 being disposed, an effect of enhancing the surface pressure of the unit cell can be generated by the first shaped portion 150.

[0067] Figure 4 A reaction surface of a cathode separator according to an exemplary embodiment of the present disclosure is illustrated, Figure 5 A cooling surface of a cathode separator according to an exemplary embodiment of the present disclosure is illustrated.

[0068] Reference Figure 4 and Figure 5 The cathode separator 200 can include a reaction surface 200a and a cooling surface 200b. The reaction surface 200a of the cathode separator 200 can include a reaction region 210 in which an electrochemical reaction of a reaction gas occurs. The cathode separator 200 can be provided with a plurality of manifolds 101, 102, 103, 104, 105, 106 through which a reaction gas or a coolant is introduced or discharged.

[0069] The cathode separator 200 can be provided with a third flow guide hole 220 for discharging the reaction gas supplied from the manifolds 101, 102, 103, 104, 105, 106 into the reaction region 210 and a fourth flow guide hole 230 for introducing the reaction gas into the reaction region 210.

[0070] The second gasket 330 can be disposed on the reaction face 200a of the cathode separator 200, and the third gasket 350 can be disposed on the cooling face 200b of the cathode separator 200. The second gasket 330 can include a second main gasket 331 disposed along the periphery of the manifolds 101, 102, 103, 104, 105, 106, and second support portions 335 extending from the second main gasket 331 toward the reaction area 210. A plurality of second support portions 335 can be arranged in the space between each of the manifolds 101, 102, 103, 104, 105, 106 and the reaction area 210. Third flow holes 220 can be formed between the second support portions 335 extending from the first inlet manifold 101 toward the reaction area 210. Fourth flow holes 230 can be formed between the second support portions 335 extending from the first outlet manifold 104 toward the reaction area 210.

[0071] The third gasket 350 can include a third main gasket 351 disposed along the periphery of the manifolds 101, 102, 103, 104, 105 among the manifolds 101, 102, 104, 105 through which the reaction gas flows in and out, and third support portions 355 extending from the third main gasket 351 toward each of the manifolds 101, 102, 103, 104, 105, 106. The third support portions 355 can extend from a portion of the third main gasket 351 extending in the first direction while being adjacent to the middle of the cooling face 200b of the cathode separator 200, toward each of the manifolds 101, 102, 104, 105. Here, no gasket structure extending in the first direction is disposed between the central region of the cathode separator 200 and the coolant manifolds 103, 106, but the third support portions 355 extending in a direction perpendicular to the first direction can be disposed.

[0072] A plurality of third support portions 355 can be disposed in the space between the central region of the cooling face 200b and each of the manifolds 101, 102, 103, 104, 105, 106. Third flow holes 220 can be formed between the third support portions 355 located adjacent to the second outlet manifold 102. Fourth flow holes 230 can be formed between the third support portions 355 located adjacent to the second inlet manifold 105.

[0073] The cathode separator 200 can include a second shaped portion 250 protruding in a direction from the reaction face 200a toward the cooling face 200b. The second shaped portion 250 can be a portion in which a portion of the cathode separator 200 is bent. The second shaped portion 250 can protrude onto the cooling face 200b of the cathode separator 200. By the second shaped portion 250, a second recess 255, which is a recessed portion, can be formed on the reaction face 200a of the cathode separator 200.

[0074] The cathode separator 200 can include a third shaped portion 270 protruding in a direction from the cooling surface 200b toward the reaction surface 200a. The third shaped portion 270 can be a portion in which the cathode separator 200 is bent. The third shaped portion 270 can protrude toward the reaction surface 200a of the cathode separator 200. By the third shaped portion 270, a third recess 275, which is a recessed portion, can be formed on the cooling surface 200b of the cathode separator 200.

[0075] The second shaped portion 250 and the third shaped portion 270 can extend in a first direction in which the manifolds 101, 102, 103 or 104, 105, 106 provided on the same side of the anode separator 100 are arranged. The second shaped portion 250 can provide a position at which the second gasket 330 is discontinuously disposed on the reaction surface 200a. The second shaped portion 250 can provide a position at which a plurality of second support portions 335 are disposed on the reaction surface 200a. The second support portions 335 can be discontinuously disposed on the second recess 255 formed on the reaction surface 200a by the second shaped portion 250. The third shaped portion 270 can provide a position at which the third gasket 350 is discontinuously disposed on the cooling surface 200b. The third shaped portion 270 can provide a position at which a plurality of third support portions 355 are disposed on the cooling surface 200b. The third support portions 355 can be discontinuously disposed on the third recess 275 formed on the cooling surface 200b by the third shaped portion 270.

[0076] A plurality of second shaped portions 250 or a plurality of second recesses 255 can be provided between the reaction region 210 and each of the manifolds 101, 102, 104, 105 through which the reaction gas flows, among the manifolds 101, 102, 103, 104, 105, 106. For example, four second shaped portions 250 and four second recesses 255 can be provided. The second shaped portion 250 or the second recess 255 can not be provided between the coolant manifolds 103, 106 and the reaction region 210. The second shaped portion 250 or the second recess 255 can be located in the vicinity of the reaction region 210 based on the provided positions of the third flow guide hole 220 and the fourth flow guide hole 230. Based on the first direction, a length of each of the second shaped portions 250 can be greater than a length of each of the manifolds 101, 102, 104, 105 provided at the corresponding position. For example, based on the first direction, a length of the second shaped portion 250 provided adjacent to the first inlet manifold 101 can be greater than a length of the first inlet manifold 101. The second shaped portions 250 provided in the first direction can be spaced apart from each other.

[0077] A plurality of third shaped portions 270 or a plurality of third recessed portions 275 can be provided between the manifolds 101, 102, 103, 104, 105, 106 and the reaction region 210 of the cathode separator 200. For example, six third shaped portions 270 or six third recessed portions 275 can be provided. The third shaped portions 270 or the third recessed portions 275 can be located near the manifolds 101, 102, 103, 104, 105, 106, as compared with the second shaped portions 250 or the second recessed portions 255. Accordingly, the manifolds 101, 102, 103, 104, 105, 106, the third shaped portions 270, and the second shaped portions 250 can be sequentially positioned in a direction from one side of the cathode separator 200 to the other side thereof. The third shaped portions 270 or the third recessed portions 275 can be located near the manifolds 101, 102, 103, 104, 105, 106 based on the provided positions of the third flow channels 220 and the fourth flow channels 230. Based on the first direction, the length of each third shaped portion 270 can be greater than the length of each of the manifolds 101, 102, 104, 105 provided in the corresponding position. For example, based on the first direction, the length of the third shaped portion 270 provided adjacent to the first inlet manifold 101 can be greater than the length of the first inlet manifold 101. The length of each second shaped portion 250 can be the same as the length of each third shaped portion 270 provided in the corresponding position based on the manifolds 101, 102, 103, 104, 105, 106. For example, the length of the third shaped portion 270 provided adjacent to the first inlet manifold 101 can be the same as the length of the second shaped portion 250 provided adjacent to the first inlet manifold 101. However, the length of the third shaped portion 270 provided adjacent to the first inlet manifold 101 can be greater than the length of the third shaped portion 270 provided adjacent to the coolant manifolds 103, 106. Further, the length of the third shaped portion 270 provided adjacent to the coolant manifolds 103, 106 can be less than the length of the second shaped portion 250. The third shaped portions 270 provided in the first direction can be spaced apart from each other.

[0078] Based on a separator layer stacking direction from the reaction face 200a of the cathode separator 200 toward the cooling face 200b thereof, the second shaped portions 250 can be provided to overlap the third primary gaskets 351, and the third shaped portions 270 can be provided to overlap the second primary gaskets 331. The second primary gaskets 331 can be located near the manifolds 101, 102, 104, 105 as compared with the third primary gaskets 351, and the third shaped portions 270 can be located near the manifolds 101, 102, 104, 105 as compared with the second shaped portions 250. The third shaped portions 270 and the second recessed portions 255 can be provided on the reaction face 200a of the cathode separator 200, and the third recessed portions 275 and the second shaped portions 250 can be provided on the cooling face 200b of the cathode separator 200.

[0079] According to the exemplary embodiment of the present disclosure, the warping of the cathode separator 200 can be reduced by the second molding portion 250 and the third molding portion 270 including a curved shape. Although there is a problem in which the surface pressure of the unit cell becomes low in the area adjacent to the manifold 101, 102, 103, 104, 105, 106 through which the reaction gas or the coolant flows in and out, without the second support portion 335 and the third support portion 355, the effect of enhancing the surface pressure of the unit cell can be generated by the second molding portion 250 and the third molding portion 270.

[0080] Figure 6 is a cross-sectional view along line A-A' in Figure 2 .

[0081] Referring to Figure 2 and Figure 6 , in the area in which the first support portion 315 is not provided, the first molding portion 150 can protrude toward the cooling surface 100b rather than the reaction surface 100a on which the first main gasket 311 is provided. The first recess 155 provided on the reaction surface 100a of the anode separator 100 by the shape of the first molding portion 150 can be filled with the first sealing portion 410. The first recess 155 can be an area recessed based on the reaction surface 100a of the anode separator 100. The first sealing portion 410 can be made of an elastic material, preferably the same rubber material as the first gasket 310.

[0082] According to the exemplary embodiment of the present disclosure, since the first recess 155 is filled with the first sealing portion 410, the rigidity of the first molding portion 150 can be improved, and since the rigidity of the first molding portion 150 is improved, the structural stability of the anode separator 100 can be improved.

[0083] Figure 7 is a cross-sectional view along line B-B' in Figure 2 .

[0084] Referring to Figure 2 and Figure 7 , in the area in which the first support portion 315 is provided, the first molding portion 150 can protrude toward the cooling surface 100b rather than the reaction surface 100a on which the first main gasket 311 is provided. The first recess 155 provided on the reaction surface 100a of the anode separator 100 by the shape of the first molding portion 150 can be filled with the first sealing portion 410. The first sealing portion 410 can be in contact with the first support portion 315.

[0085] Figure 8 is a cross-sectional view along line C-C' in Figure 4 .

[0086] Referring to Figure 4 and Figure 8The second support portion 335 and the third support portion 355 can not be disposed in a region of the cathode separator 200 in which the third flow guide hole 220 is disposed. The second molded portion 250 can be disposed on the cooling face 200b of the cathode separator 200, and the third molded portion 270 can be disposed on the reaction face 200a of the cathode separator 200. The second molded portion 250 can protrude from the reaction face 200a toward the cooling face 200b, and the third molded portion 270 can protrude from the cooling face 200b toward the reaction face 200a. The third primary gasket 351 can be disposed on the second molded portion 250, and the second primary gasket 331 can be disposed on the third molded portion 270. The second molded portion 250 can not be exposed to the outside due to the third primary gasket 351, and the third molded portion 270 can not be exposed to the outside due to the second primary gasket 331. A second recess 255 disposed on the reaction face 200a of the cathode separator 200 by the shape of the second molded portion 250 can be filled with a second sealing portion 430. The second sealing portion 430 can be made of an elastic material, preferably the same rubber material as the third gasket 350. A third recess 275 disposed on the cooling face 200b of the cathode separator 200 by the shape of the third molded portion 270 can be filled with a third sealing portion 450. The third sealing portion 450 can be made of an elastic material, preferably the same rubber material as the second gasket 330. The second recess 255 can be a region recessed based on the reaction face 200a of the cathode separator 200. The third recess 275 can be a region recessed based on the cooling face 200b of the cathode separator 200.

[0087] The second molded portion 250 and the third molded portion 270 can protrude in a direction opposite to a space in which air is introduced or discharged through the third flow guide hole 220. The third molded portion 270 based on the third flow guide hole 220 located near the manifold 101, 102, 103, 104, 105, 106 can protrude from the cooling face 200b toward the reaction face 200a, and the second molded portion 250 based on the third flow guide hole 220 located near the reaction region 210 can protrude from the reaction face 200a toward the cooling face 200b.

[0088] Figure 9 is a cross-sectional view along line D-D' in Figure 4 For brevity, redundant descriptions of Figure 8 are omitted.

[0089] Referring to Figure 4 and Figure 9 , the second molded portion 250 can be disposed on the cooling face 200b of the cathode separator 200, and the third molded portion 270 can be disposed on the reaction face 200a of the cathode separator 200. The third primary gasket 351 can be disposed on the second molded portion 250, and the second primary gasket 331 can be disposed on the third molded portion 270.

[0090] According to the exemplary embodiment of the present disclosure, since the second recess 255 and the third recess 275 are filled with the second sealing portion 430 and the third sealing portion 450, respectively, the rigidity of the second molded portion 250 and the third molded portion 270 can be improved, and since the rigidity of the second molded portion 250 and the third molded portion 270 is improved, the structural stability of the cathode separator 200 can be improved.

[0091] Figure 10 is a cross-sectional view of a separator assembly according to an exemplary embodiment of the present disclosure.

[0092] Referring to Figure 2 , Figure 4 and Figure 10 , in a structure in which a plurality of separators 100, 200 are stacked, hydrogen gas can flow through the first flow guide hole 120. The third molded portion 270 based on the first flow guide hole 120 located near the manifold 101, 102, 103, 104, 105, 106 can protrude from the cooling surface 200b toward the reaction surface 200a, so that the rigidity of the cathode separator 200 can be improved without the flow of hydrogen gas being hindered by the third molded portion 270. The first molded portion 150 based on the first flow guide hole 120 located near the reaction region 110 can protrude from the reaction surface 100a toward the cooling surface 200b, so that the rigidity of the anode separator 100 can be improved without the flow of hydrogen gas being hindered by the first molded portion 150. In addition, the first molded portion 150 can be in direct contact with the third main gasket 351 disposed on the second molded portion 250, thereby increasing the surface pressure between the separators.

[0093] In addition, even if the stacked structure of the separators 100, 200 is analyzed in terms of air flow, the direction of the air flow and the direction in which the molded portions 150, 250, 270 protrude do not coincide with each other, so that the surface pressure between the separators can be increased without the air flow being hindered by the molded portions 150, 250, 270.

[0094] Figure 11 Variations of the region A in Figure 2 are shown, Figure 12 molded portions disposed on the separators in Figure 11 are shown.

[0095] Referring to Figure 11 and Figure 12The first forming portion 150 disposed in the area A (in which the first support portions 315 are discontinuously arranged) can include a basic forming portion 151 and a modified forming portion 152. Each basic forming portion 151 can protrude from the reaction face 100a of the anode separator 100 toward the cooling face 100b thereof. Each modified forming portion 152 can protrude from the cooling face 100b of the anode separator 100 toward the reaction face 100a thereof. The basic forming portion 151 can protrude toward the cooling face 100b opposite to the reaction face 100a in which the first support portion 315 is disposed, and the modified forming portion 152 can protrude toward the reaction face 100a in which the first support portion 315 is disposed.

[0096] The modified forming portion 152 can protrude toward each first support portion 315. The first support portion 315 can be formed on the protruding modified forming portion 152. Accordingly, in the area A, the basic forming portion 151 and the modified forming portion 152 can be alternately disposed to correspond to the arrangement structure of the first support portions 315 discontinuously arranged in the first direction. The basic forming portion 151 and the modified forming portion 152 protruding in different directions can be alternately arranged along the first direction. Each basic forming portion 151 can be disposed between two adjacent first support portions 315, and each modified forming portion 152 can be disposed between two adjacent basic forming portions 151. Based on the first direction, the width in which the modified forming portion 152 extends can be the same as the first support portion 315. In short, based on the first direction, the modified forming portion 152 can have the same length as the first support portion 315.

[0097] Unlike the example embodiment described above, the same shape as the modified forming portion 152 of the first forming portion 150 can be applied to the second forming portion 250 and the third forming portion 270 disposed on the cathode separator 200 as shown in Figure 4 and Figure 5

[0098] According to the example embodiment of the present disclosure, although the first support portion 315 can be deteriorated due to contact with the gasket disposed on the cathode separator, and can decrease in height due to the deterioration, since the first support portion 315 is formed on the modified forming portion 152, the height of the first support portion 315 can not be less than the height of the modified forming portion 152. In short, the modified forming portion 152 can serve as a frame of the first support portion 315. Accordingly, the problem that the surface pressure between separators becomes low due to the deterioration of the first support portion 315 can be alleviated by the modified forming portion 152.

[0099] Figure 13 and Figure 14 Variations applied to the forming portion of the cathode separator are shown.

[0100] Reference is made to Figure 13 ​In order to improve the rigidity of the second molding part 251 or the third molding part 271 disposed on the cathode separator and the structural stability between separators, the second molding part 251 or the third molding part 271 can be provided in a shape in which a portion of the second molding part 251 or the third molding part 271 is exposed outside the second main gasket 331 or the third main gasket 351. The second molding part 251 can be configured to penetrate the third main gasket 351, and accordingly, the amount of sealing material loaded on the back surface of the second molding part 251 can be increased. The second sealing part 430 can be formed on the back surface of the second molding part 251, and the third sealing part 450 can be formed on the back surface of the third molding part 271. In addition, the third molding part 271 can be configured to penetrate the second main gasket 331, and accordingly, the amount of sealing material loaded on the back surface of the third molding part 271 can be increased. Accordingly, the rigidity of the second molding part 251 or the third molding part 271 can be relatively increased.

[0101] Referring to Figure 14 The shape of the second molding part 252 or the third molding part 272 can be changed so that the amount of sealing material loaded on the back surface of the second molding part 252 or the third molding part 272 is increased. Figure 13 The cross section of the illustrated second molding part 251 or the third molding part 271 can include a triangular shape, but the cross section of the modified second molding part 252 or the modified third molding part 272 can include a trapezoidal shape in which a portion thereof is exposed outside the second main gasket 331 or the third main gasket 351. Since the second molding part 252 or the third molding part 272 is provided in a trapezoidal shape rather than a triangular shape, the amount of sealing material loaded on the back surface of the second molding part 252 or the third molding part 272 can be relatively increased. Accordingly, the rigidity of the second molding part 252 or the third molding part 272 can be increased compared to the rigidity of the second molding part 251 or the third molding part 271. Figure 13 The rigidity of the second molding part 252 or the third molding part 272 can be increased compared to the rigidity of the second molding part 251 or the third molding part 271. Figure 14 The rigidity of the second molding part 252 or the third molding part 272 can be increased compared to the rigidity of the second molding part 251 or the third molding part 271.

[0102] Figure 15 is a cross-sectional view of a separator assembly to which the molding part in Figure 13 is applied.

[0103] Referring to Figure 15A portion of the second profiled portion 251 provided on the cathode separator 200 can be exposed through the third primary gasket 351. The second profiled portion 251 exposed outside the third primary gasket 351 can be in direct contact with the first profiled portion 150. Accordingly, the first profiled portion 150 in contact with the second profiled portion 251 can be a profiled portion provided on the anode separator 100 belonging to an adjacent unit cell. The anode separator 100 and the cathode separator 200 provided so that the reaction surfaces face each other can form one unit cell. However, the space in which the first profiled portion 150 and the second profiled portion 251 are in contact with each other is a space between the cooling surfaces 100b, 200b in which the reaction gas does not flow, and thus a short circuit problem due to contact between separators does not occur.

[0104] A portion of the third profiled portion 271 provided on the cathode separator 200 can be exposed through the second primary gasket 331. The third profiled portion 271 exposed outside the second primary gasket 331 can be in direct contact with the first primary gasket 311 on the sub-gasket 500 or the anode separator 100, which is another separator provided adjacent to the cathode separator 200. The third profiled portion 271 can be in contact with the first primary gasket 311 provided on the anode separator 100 belonging to another unit cell, rather than on the anode separator 100 constituting a unit cell.

[0105] According to the exemplary embodiment of the present disclosure, since the second profiled portion 251 is in direct contact with the first profiled portion 150 and the third profiled portion 271 is in direct contact with the first primary gasket 311 of the sub-gasket 500 or the adjacent anode separator 100, a phenomenon of a decrease in surface pressure in a region in which a support portion is not provided on each of the reaction surface 200a and the cooling surface 200b of the cathode separator 200 can be alleviated. In addition, the second profiled portion 251 and the third profiled portion 271 are configured as spacers to prevent the gasket made of a rubber material from being excessively compressed.

[0106] Figure 16 a modification example of the first gasket arranged on the anode separator according to an exemplary embodiment of the present disclosure is shown, Figure 17 a modification example of the second gasket arranged on the cathode separator according to an exemplary embodiment of the present disclosure is shown, and Figure 18 is a cross-sectional view taken along the line E-E' in Figure 16 and Figure 17 For the sake of brevity, descriptions repeated with Figure 2 and Figure 4 are omitted.

[0107] Reference is made to Figures 16 to 18The anode separator 100 can be provided with the first shaped portion 150 and an additional shaped portion 170. The additional shaped portion 170 can be a fourth shaped portion 170. The fourth shaped portion 170 can protrude from the cooling face 100b of the anode separator 100 toward the reaction face 100a thereof. The fourth shaped portion 170 can be a portion in which a portion of the anode separator 100 is bent. A fourth recessed portion 175, which is a recessed portion, can be formed on a back face of the fourth shaped portion 170 exposed through the cooling face 100b of the anode separator 100. A fourth sealing portion 470 can be disposed in the fourth recessed portion 175.

[0108] The fourth shaped portion 170 can be disposed at a position overlapping the first main gasket 311. The first main gasket 311 can be formed on the fourth shaped portion 170, and the fourth shaped portion 170 is configured as a frame of the first main gasket 311.

[0109] A plurality of fourth shaped portions 170 can be disposed between the manifolds 101, 102, 103 and the reaction region 110 of the anode separator 100. For example, six fourth shaped portions 170 can be disposed. The fourth shaped portions 170 can be closer to the manifolds 101, 102, 103 than the first shaped portions 150. Accordingly, the manifolds 101, 102, 103, the fourth shaped portions 170, and the first shaped portions 150 can be sequentially positioned in a direction from one side of the anode separator 100 to the other side thereof. The fourth shaped portions 170 can be located near the manifolds 101, 102, 103 based on the disposed positions of the first flow guide holes 120. The first flow guide holes 120 can be disposed between the first shaped portions 150 and the fourth shaped portions 170. Based on the first direction, a length of each of the fourth shaped portions 170 can be greater than a length of each of the manifolds 101, 102, 103 disposed at a corresponding position. For example, based on the first direction, a length of the fourth shaped portion 170 disposed adjacent to the first inlet manifold 101 can be greater than a length of the first inlet manifold 101. The length of each of the first shaped portions 150 can be the same as the length of each of the fourth shaped portions 170 disposed at a corresponding position based on the manifolds 101, 102, 103. For example, the length of the fourth shaped portion 170 disposed adjacent to the first inlet manifold 101 can be the same as the length of the first shaped portion 150 disposed adjacent to the first inlet manifold 101. However, the length of the fourth shaped portion 170 disposed adjacent to the first inlet manifold 101 can be greater than the length of the fourth shaped portion 170 disposed adjacent to the coolant manifold 103. In addition, the length of the fourth shaped portion 170 disposed adjacent to the coolant manifold 103 can be less than the length of the first shaped portion 150. The fourth shaped portions 170 disposed along the first direction can be spaced apart from each other. Although Figure 16 Only one side of the anode separator 100 is shown, but the fourth shaped portions 170 can be disposed at positions adjacent to the manifolds formed on the other side of the anode separator 100.

[0110] The first flow holes 120 can be formed to correspond to the first inlet manifold 101. The first connection portions 317 can be provided at the ends of each of the first support portions 315 extending from the second outlet manifold 102 toward the reaction region 110 at which the flow holes through which the reaction gas flows are not formed. One end of each of the first support portions 315 can be connected to the first main gasket 311, and the other end of each of the first support portions 315 can be connected to the first connection portions 317. The first connection portions 317 can be provided on the first molding portion 150. In the region in which the flow holes through which the reaction gas flows are not formed, the first connection portions 317 connected to all of the ends of the first support portions 315 can be provided to increase the surface pressure, thereby reinforcing the stacked structure of the separators.

[0111] The third flow holes 220 can be formed to correspond to the second outlet manifold 102. The second connection portions 337 can be provided at the ends of each of the second support portions 335 extending from the first inlet manifold 101 toward the reaction region 210 at which the flow holes through which the reaction gas flows are not formed. One end of each of the second support portions 335 can be connected to the second main gasket 331, and the other end of each of the second support portions 335 can be connected to the second connection portions 337. The second connection portions 337 can be provided on the second molding portion 250. In the region in which the flow holes through which the reaction gas flows are not formed, the second connection portions 337 connected to all of the ends of the second support portions 335 can be provided to increase the surface pressure, thereby reinforcing the stacked structure of the separators.

[0112] In the state in which the anode separator 100 and the cathode separator 200 are stacked, the first connection portions 317 can be disposed to overlap the ends of the second support portions 335 disposed between the third flow holes 220. The second connection portions 337 can be disposed to overlap the ends of the first support portions 315 disposed between the first flow holes 120. Based on the adjacent unit cells, the third molding portion 270 and the fourth molding portion 170 can protrude in directions facing each other, and the first molding portion 150 and the second molding portion 250 can protrude in directions opposite to each other. However, the first molding portion 150 and the second molding portion 250 provided on the cooling surfaces 100b and 200b of the anode separator 100 and the cathode separator 200 facing each other can protrude in directions facing each other.

[0113] According to the exemplary embodiment of the present disclosure, the first molding portion 150 and the second molding portion 250 located near the central regions of each of the separators 100 and 200 contact each other, and the first connection portions 317 and the second connection portions 337 are provided to prevent the surface pressure from decreasing due to the first support portions 315 and the second support portions 335, thereby achieving reinforcement of the stacked structure of the separators 100 and 200.

[0114] As apparent from the above description, according to the example embodiments of the present disclosure, the warping of the fuel cell separator can be reduced by forming a portion including a curved shape. Although there is a problem in which the cell surface pressure is lowered in a region in which the gasket support portion is not provided in a region adjacent to the manifold into and out of which the reaction gas or coolant flows, the effect of increasing the surface pressure of the cell can be produced by the shaped portion.

[0115] According to the example embodiments of the present disclosure, the flow direction of the reaction gas does not coincide with the protruding direction of the shaped portion, so that the surface pressure between the separators can be increased without the flow of the reaction gas being hindered by the shaped portion.

[0116] According to the example embodiments of the present disclosure, the rigidity of the shaped portion and the rigidity of the separator including the shaped portion can be increased by filling the back surface of each unilaterally protruding shaped portion with a sealing material.

[0117] According to the example embodiments of the present disclosure, the first shaped portion and the second shaped portion of each separator located in the vicinity of the central region contact each other, and the first connecting portion and the second connecting portion are provided to prevent the surface pressure from being lowered due to the first support portion and the second support portion, achieving the reinforcement of the stacked structure of the separators.

[0118] For ease of explanation and precise definition in the appended claims, the terms "upper", "lower", "inner", "outer", "upper", "lower", "upward", "downward", "front", "back", "back", "inner", "outer", "inward", "outward", "internal", "external", "inward", "outward", "forward" and "backward" and the like are used to describe the features of the example embodiments with reference to the positions of the features shown in the drawings. It should also be understood that the term "connected" or its derivatives means direct and indirect connections.

[0119] The term "and / or" can include a combination of a plurality of related listed items or any of the plurality of related listed items. For example, "A and / or B" includes all three cases, such as "A", "B", and "A and B".

[0120] In the example embodiments of the present disclosure, "at least one of A and B" can mean "at least one of A or B" or "at least one of a combination of at least one of A and B". In addition, "one or more of A and B" can mean "one or more of A or B" or "one or more of a combination of one or more of A and B".

[0121] In this specification, unless otherwise specified, a singular expression includes a plural expression, unless the context clearly indicates otherwise.

[0122] In the example embodiments of the present disclosure, it is understood that terms such as "include," or "has," are intended to indicate that the specification described in the specification exists, and do not exclude the possibility of adding or existence of one or more other features, numbers, steps, operations, elements, components, or combinations thereof.

[0123] According to the example embodiments of the present disclosure, the components can be implemented in combination with each other, or some components can be omitted.

[0124] The descriptions for the certain example embodiments of the present disclosure have been presented above for the purpose of illustration and description. They are not intended to be exhaustive or to limit the present disclosure to the precise forms disclosed, and it is apparent that many variations and modifications are possible in light of the above teachings. The example embodiments were chosen and described in order to explain certain principles of the application and their practical application, to enable others skilled in the art to make and utilize the various example embodiments of the present disclosure, as well as various alternatives and modifications thereof. It is intended that the scope of the present disclosure be defined by the claims appended hereto, and their equivalents.

Claims

1. A fuel cell separator comprising: at least one separator provided with a plurality of manifolds and a reaction area, the at least one separator including a protrusion from a reaction surface of the at least one separator toward a cooling surface of the at least one separator, wherein the protrusion extends in a first direction in which the plurality of manifolds arranged on one side of the at least one separator are aligned, and wherein the protrusion is provided at a position at which a gasket arranged on the reaction surface is discontinuously arranged in the first direction.

2. The fuel cell separator according to claim 1, wherein the protrusion includes a recess, the recess being a region in which the reaction surface is recessed, and wherein a sealing portion is provided in the recess.

3. The fuel cell separator of claim 1 wherein, the gasket includes a main gasket arranged along a periphery of the plurality of manifolds and a plurality of support portions extending from the main gasket toward the reaction area, and wherein the protrusion is provided at a position at which the plurality of support portions are aligned in the first direction.

4. The fuel cell separator according to claim 3, wherein, the at least one separator further includes a modified protrusion protruding toward the support portion, and wherein the protrusion and the modified protrusion are alternately arranged in the first direction.

5. The fuel cell separator according to claim 4, wherein the protrusion is arranged between two adjacent support portions of the plurality of support portions, and wherein, based on the first direction, the modified protrusion extends a width of the support portion.

6. The fuel cell separator according to claim 3, wherein the at least one separator includes an additional protrusion provided at a corresponding position of the main gasket arranged between the reaction area and each manifold, and wherein the additional protrusion protrudes from the cooling surface toward the reaction surface.

7. The fuel cell separator according to claim 1, wherein the protrusion is a plurality of, wherein a plurality of protrusions are provided between the reaction area and each manifold of the plurality of manifolds through which a flow reaction gas passes, and wherein, based on the first direction, a length of each protrusion is greater than a length of each manifold provided at a corresponding position thereof.

8. A fuel cell separator assembly comprising: a first separator including a reaction surface, a cooling surface, and a first protrusion protruding from the reaction surface toward the cooling surface; a second separator including a reaction surface, a cooling surface, and a second protrusion protruding from the reaction surface of the second separator toward the cooling surface of the second separator; a first gasket arranged on the reaction surface of the first separator; a second gasket arranged on the reaction surface of the second separator; and a third gasket arranged on the cooling surface of the second separator, wherein the first protrusion and the second protrusion extend in a first direction in which a plurality of manifolds arranged on one side of the first separator or the second separator are aligned.

9. The fuel cell separator assembly according to claim 8, the first protrusion is provided at a position at which the first gasket is discontinuously arranged in the first direction, and wherein, wherein the second protrusion is provided at a position at which the second gasket is discontinuously arranged in the first direction. the second separator includes a third protrusion protruding from the cooling surface of the second separator toward the reaction surface of the second separator.

10. The fuel cell separator assembly of claim 8, wherein, ​ 11. The fuel cell separator assembly of claim 10, wherein, The third shaped portion is disposed closer to the plurality of manifolds than the second shaped portion.

12. The fuel cell separator assembly of claim 8, wherein The first gasket includes a first main gasket disposed along a periphery of the plurality of manifolds and a first support portion extending from the first main gasket toward a reaction region of the first separator, The second gasket includes a second main gasket disposed along a periphery of the plurality of manifolds and a second support portion extending from the second main gasket toward a reaction region of the second separator, The first shaped portion is disposed at a position where a plurality of first support portions are arranged in the first direction, and The second shaped portion is disposed at a position where a plurality of second support portions are arranged in the first direction.

13. The fuel cell separator assembly of claim 12, wherein, The second separator further includes a third shaped portion protruding from a cooling surface of the second separator toward a reaction surface of the second separator, and the third shaped portion is disposed at a position overlapping the second main gasket.

14. The fuel cell separator assembly of claim 13, wherein, The third gasket is disposed on the second shaped portion, and the second gasket is disposed on the third shaped portion.

15. The fuel cell separator assembly of claim 14, wherein A portion of the second shaped portion is exposed through the third gasket, The first separator and the second separator are alternately stacked, and The portion of the second shaped portion exposed through the third gasket is in contact with the first shaped portion protruding toward the cooling surface of the second separator.

16. The fuel cell separator assembly of claim 14, wherein A portion of the third shaped portion is exposed through the second gasket, and The exposed portion of the third shaped portion is in contact with a sub-gasket disposed between the first separator and the second separator or a first gasket disposed on the first separator.

17. The fuel cell separator assembly of claim 12, wherein, The first separator further includes a fourth shaped portion protruding from a cooling surface of the first separator toward a reaction surface of the first separator, and The fourth shaped portion is disposed at a position overlapping the first main gasket.

18. The fuel cell separator assembly of claim 17, wherein, The first separator further includes a flow guide hole through which a reaction gas flows, and The flow guide hole is disposed between the first shaped portion and the fourth shaped portion.

19. The fuel cell separator assembly of claim 8, wherein The first shaped portion includes a first recessed portion that is a region in which a reaction surface of the first separator is recessed, The second shaped portion includes a second recessed portion that is a region in which a reaction surface of the second separator is recessed, and The first recessed portion and the second recessed portion are filled with an elastic material.

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