Fuel cell separator

Abstract

The present invention relates to a fuel cell separator, and more particularly, to a fuel cell separator according to the present embodiment, comprising: a body including a gas inlet formed along a first side and a gas outlet formed along a second side facing the first side and located in a diagonal direction of the gas inlet; a first block portion provided in the body in the diagonal direction and fluidly connecting the gas inlet and the gas outlet; a second block portion located on the opposite side of the gas inlet so as to be fluidically connected to the first block portion and provided adjacent to a first corner region of the first side; and a third block portion located on the opposite side of the gas outlet so as to be fluidically connected to the first block portion and provided adjacent to a second corner region of the second side.

Description

Technical Field

[0001] This invention relates to a fuel cell separator, and more specifically to a fuel cell separator comprising: a body including a gas inlet and a gas outlet; a first block disposed on the body; a second block fluidly connected to the first block; and a third block fluidly connected to the first block, wherein the structure and area ratio of the first, second, and third blocks are used to prevent overflow and drying of the membrane electrode assembly and to regulate the flow properties of the flow field. Background Technology

[0002] Based on the type of electrolyte, fuel cells are classified into solid oxide fuel cells, molten carbonate fuel cells, and polymer electrolyte membrane fuel cells. Fuel cells are power generation devices that convert the chemical energy generated during fuel oxidation into electrical energy.

[0003] The polymeric electrolyte membrane fuel cell (PEMFC) of this type of fuel cell includes: a membrane electrode assembly (MEA) having an electrode layer, wherein a positive electrode and a negative electrode are disposed at the center of an electrolyte membrane that allows hydrogen ions to permeate; a gas diffusion layer (GDL) for uniformly distributing the reactant gases; and a bipolar plate for supplying reactant gases to the gas diffusion layer and discharging the produced water.

[0004] Existing flow path structures for fuel cell separators used for diffusion of reactant gases and discharge of water include two-dimensional flow path structures and three-dimensional flow path structures. The two-dimensional flow paths include: serpentine flow paths that form continuous, tortuous flow paths; parallel flow paths formed by multiple straight flow path groups arranged in parallel; parallel and series hybrid flow paths where parallel flow paths are interconnected; and protrusion flow paths formed by multiple dot-like protrusions. The three-dimensional flow path structures are formed by mesh-like structures.

[0005] However, fuel cell separators with serpentine flow paths, parallel flow paths, and mixed parallel and series flow paths have the following problems: because the gas flows in a laminar flow pattern in the flow path, the fuel cell separator cannot properly remove the moisture generated in the membrane electrode assembly (MEA). The gas pressure gradually decreases towards the gas outlet side, which increases the possibility of MEA flooding due to moisture blockage in the flow path.

[0006] Furthermore, fuel cell separators employing protruding flow path structures or flow path structures that combine protruding flow path structures with other flow path structures suffer from the following problem: excessive removal of moisture generated in the membrane electrode assembly (MEA) leads to the MEA drying out.

[0007] Furthermore, fuel cell separators with three-dimensional flow paths have the following problems: moisture is not removed in the complex three-dimensional flow path, making processing and assembly difficult and increasing production costs.

[0008] In particular, in existing fuel cell systems, a fuel cell stack humidification device needs to be attached to prevent the membrane electrode assembly (MEA) from drying out. This increases the size and weight of the fuel cell system, which in turn limits the devices or fields where fuel cell systems can be used.

[0009] [Existing Technical Documents]

[0010] [Patent Literature]

[0011] Patent Document 1: KR 2017-0050689 (published on May 11, 2017)

[0012] Patent Document 2: KR 2010-0112354 (published on October 19, 2010) Summary of the Invention

[0013] Technical issues

[0014] The present invention addresses the problems described above by providing a fuel cell separator with a flow path structure that prevents overflow and drying of the membrane electrode assembly (MEA).

[0015] Furthermore, the present invention provides a fuel cell separator with a flow path structure having a three-dimensional H2O circulation path that allows for the reuse of water generated in the membrane electrode assembly (MEA) through autonomous humidification when the fuel cell cell is formed into a membrane electrode assembly (MEA).

[0016] Furthermore, the present invention provides a fuel cell separator having a flow path structure that reduces the overall volume and weight of the fuel cell system by removing the humidification device in the fuel cell system.

[0017] The technical problems of this invention are not limited to those mentioned above. Other technical problems not mentioned can be clearly understood by those skilled in the art through the following description.

[0018] Technical solution

[0019] A fuel cell separator according to an embodiment of the present invention may include: a body including a gas inlet formed along a first side and a gas outlet formed along a second side (2) opposite to the first side and located diagonally opposite to the gas inlet; a first block portion disposed along the diagonal direction and fluidly connected to the gas inlet and the gas outlet; a second block portion located opposite to the gas inlet and adjacent to the first corner region of the first side in a manner fluidly connected to the first block portion; and a third block portion located opposite to the gas outlet and adjacent to the second corner region of the second side in a manner fluidly connected to the first block portion.

[0020] Furthermore, the first block may include: a plurality of first block lines forming a first angle with a first center line that penetrates the center point of the body in a manner perpendicular to the first side of the body and is arranged at a first interval; and a plurality of first flow paths formed between the plurality of first block lines.

[0021] Furthermore, the plurality of first lines may each include: a plurality of first components, arranged at 11 intervals; and a plurality of first mixing sections, formed at 11 intervals, to fluidly connect the plurality of first flow paths.

[0022] Furthermore, the plurality of first blocks may include: a first boundary block line facing the end of the gas inlet and forming a boundary with the second block; and a second boundary block line facing the end of the gas outlet and forming a boundary with the third block.

[0023] Furthermore, the area ratios of the first, second, and third blocks relative to the total area of ​​the body can be varied by changing one or more of the following: the inlet length of the gas inlet, the outlet length of the gas outlet, and the first angle.

[0024] Furthermore, the second block may include: a plurality of second block lines forming a second angle with a first center line that penetrates the center point of the body in a manner perpendicular to the first side of the body and is arranged at a second interval; and a plurality of second flow paths formed between the plurality of second block lines.

[0025] Furthermore, the plurality of second lines may each include: a plurality of second components arranged at 21 intervals; and a plurality of second mixing sections formed at 21 intervals, thereby fluidly connecting the plurality of second flow paths.

[0026] Furthermore, the third block may include: a plurality of third block lines forming a third angle with a first center line that penetrates the center point of the body in a manner perpendicular to the first side of the body and is arranged at a third interval; and a plurality of third flow paths formed between the plurality of third block lines.

[0027] Furthermore, the plurality of third lines may each include: a plurality of third components, arranged at 31 intervals; and a plurality of third mixing sections, formed at 31 intervals, to fluidly connect the plurality of third flow paths.

[0028] Furthermore, the fuel cell partition of the present invention also includes a pair of fluid channels, which are parallel to a first center line that passes through the center point of the body in a manner perpendicular to the first side of the body, and are separated from each other by a first block, a second block, and a third block.

[0029] Furthermore, the paired fluid channels may include: a first fluid channel, facing one end of the gas inlet, disposed between the first side and the second side, and fluidly connected to the first block and the third block; and a second fluid channel, facing one end of the gas outlet, disposed between the first side and the second side, and fluidly connected to the first block and the second block.

[0030] Beneficial effects

[0031] According to an embodiment of the present invention, the fuel cell separator improves the gas diffusion toward the membrane electrode assembly (MEA) by forming a diagonal flow field through which multiple first flow paths that are adjacent to each other and form laminar flow by multiple first mixing sections that generate turbulence, thus allowing moisture to be discharged smoothly and preventing H2O overflow in the membrane electrode assembly (MEA) and the first flow paths.

[0032] Furthermore, according to an embodiment of the present invention, the fuel cell separator can smoothly discharge H2O generated in the membrane electrode assembly to the outside of the fuel cell cell through a three-dimensional H2O circulation path formed by a first linear diagonal flow field and a first curved diagonal flow field formed in the first block of the fuel cell separator, and a first turbulent stagnant flow field to a third turbulent stagnant flow field formed in the second block and the third block, thereby preventing H2O overflow. A portion of the H2O discharged from the membrane electrode assembly is supplied to the membrane electrode assembly through the three-dimensional H2O circulation path, thereby preventing the membrane electrode assembly from drying out.

[0033] Furthermore, according to an embodiment of the fuel cell separator of the present invention, by adjusting the area ratio (%) of the first, second, and third blocks of the fuel cell separator to increase the gas movement speed per unit time and the energy supply per unit hour in a manner suitable for mobile devices, and by increasing the gas supply area and gas diffusion area in a manner suitable for storage devices, high energy per unit area is achieved. Attached Figure Description

[0034] Figure 1 A diagram is provided to briefly illustrate the fuel cell separator of the first embodiment of the present invention.

[0035] Figure 2 For brevity Figure 1 The diagram of the first block in the middle.

[0036] Figure 3 For brevity Figure 2 The diagram of the first line of the first section.

[0037] Figure 4 For brevity Figure 3 The diagram shows the first deformation example of the first line of the first block in the first part.

[0038] Figure 5 For brevity Figure 3 The diagram shows a second variation of the first line of the first block in the first part.

[0039] Figure 6 For brevity Figure 3 The diagram shows the third variation of the first line of the first part of the first section.

[0040] Figure 7 For brevity Figure 2 The diagram shows the first and second boundary block lines of the fuel cell separator.

[0041] Figure 8 For brevity Figure 7 The diagram of the first boundary block line in the diagram.

[0042] Figure 9 For brevity Figure 8 The diagram shows the first deformation example of the first boundary block line in the diagram.

[0043] Figure 10 For brevity Figure 8 The diagram shows the second deformation example of the first boundary block line in the figure.

[0044] Figure 11 For brevity Figure 8 The diagram shows the third deformation example of the first boundary block line in the figure.

[0045] Figure 12 For brevity Figure 2 A diagram showing the changes in the angles formed by the first boundary block line, the second boundary block line, and the first center line CL based on the lengths of the gas inlet and gas outlet, with respect to the first boundary block line and the second boundary block line.

[0046] Figures 13 to 16 To briefly illustrate based on Figure 12A diagram showing the area changes of the first block, the second block, and the third block as the angles formed by the first center line CL, the first boundary block line, and the second boundary block line change.

[0047] Figure 17 For brevity Figure 1 The diagram shows the second and third parts of the structure.

[0048] Figure 18 For brevity Figure 17 The diagram of the second line of the second part of the middle section.

[0049] Figure 19 For brevity Figure 18 The diagram shows the first deformation example of the second line of the second part of the second section.

[0050] Figure 20 For brevity Figure 18 The diagram shows a second variation of the second line of the second part of the second section.

[0051] Figure 21 For brevity Figure 18 The diagram shows the third variation of the second line of the second part of the second section.

[0052] Figure 22 For brevity Figure 18 The figure shows several other variations of the second line of the second part of the middle section.

[0053] Figure 23 For brevity Figure 1 A diagram showing the fluid flow in the first and second sections of the fuel cell separator.

[0054] Figure 24 To briefly illustrate the process... Figure 23 The flow of fluid in Figure 1 A diagram of the complex flow field formed by the fuel cell separator.

[0055] Figure 25 To briefly show Figure 1 The diagram shows the flow paths of fluids and H2O within the fuel cell cell, including the fuel cell separator.

[0056] Figure 26 To briefly show in Figure 25 In the fuel cell unit Figure 1 A diagram showing the flow paths of fluid and H2O in the fuel cell separator.

[0057] Figure 27 To briefly show in Figure 25 A diagram showing the flow path of the fluid formed by the fuel cell separator that allows hydrogen to flow into the fuel cell unit and the flow path of H2O.

[0058] Figure 28 A diagram is provided to briefly illustrate the fuel cell separator of the second embodiment of the present invention.

[0059] Figure 29 For brevity Figure 28 A diagram of paired fluid channels in a fuel cell separator.

[0060] Figure 30 To briefly illustrate in the context of Figure 28 The diagram shows the complex flow field formed by the paired fluid channels in the fuel cell separator.

[0061] Figure 31 To briefly show in Figure 25 In the fuel cell unit Figure 28 A diagram showing the flow paths of fluid and H2O formed by the fuel cell separator.

[0062] Figure 32 A graph image comparing the time-based voltage characteristics of a novel fuel cell cell using a fuel cell separator according to the second embodiment of the present invention and a conventional fuel cell separator using a conventional fuel cell separator.

[0063] Figure 33 To show in magnified form Figure 32 The chart image of section S1 in the image. Detailed Implementation

[0064] The advantages, features, and methods of implementing the present invention will become clear from the embodiments described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in a variety of different ways.

[0065] The technical features of the present invention will now be described in detail with reference to the accompanying drawings.

[0066] Figure 1 A diagram is provided to briefly illustrate the fuel cell separator of the first embodiment of the present invention.

[0067] Reference Figure 1 The fuel cell separator 100 of the first embodiment of the present invention may include a body 10, a first block 20, a second block 30 and a third block 40.

[0068] The body 10 of the fuel cell partition 100 in this embodiment can be a rectangle formed by a first side 1, a second side 2 facing the first side 1, a third side 3 connecting the first side 1 and the second side and facing each other, and a fourth side 4.

[0069] However, the body 10 in this embodiment is not limited to a rectangle, but can be one of a polygon that includes short or long sides facing each other.

[0070] The body 10 of the fuel cell separator 100 may include a gas inlet 11 and a gas outlet 12, and the body 10 may be combined with the sealing component 400.

[0071] The gas inlet 11 can be formed along the first side 1 of the body 10, and the gas outlet 12 can be located along the second side 2 of the body 10 in the diagonal direction of the gas inlet 11.

[0072] Furthermore, the sealing member 400 can be joined along the edge of the body 10 in such a way that it surrounds the first block 20, the second block 30 and the third block 40.

[0073] Therefore, according to the sealing member 400 of this embodiment, the gas flowing into the first inlet 11 of the body 10 can be prevented from leaking to the outside. A flow field based on the gas flowing into the first block 20, the second block 30 and the third block 40 can be formed by preventing the gas moving in the diagonal direction between the inlet 11 and the first outlet 12 from moving to the outside of the first block 20, the second block 30 and the third block 40.

[0074] However, the structure for preventing gas from moving to the outside of the first block 20, the second block 30 and the third block 40 is not limited to the sealing member 400, and may include various structures such as gas blocking protrusions and gas blocking members that prevent gas movement by being disposed around the first block 20, the second block 30 and the third block 40.

[0075] In this embodiment, the first block 20 can be provided in the body 10 in the diagonal direction between the gas inlet 11 and the gas outlet 12, and fluidly connect the gas inlet 11 and the gas outlet 12.

[0076] Furthermore, in this embodiment, the second block 30 is located on the opposite side of the gas inlet 11 and is disposed adjacent to the first corner region A1 of the first side in a fluidly connected manner with the first block 20.

[0077] Furthermore, in this embodiment, the third block 40 is located on the opposite side of the gas outlet 11 and adjacent to the second corner region A2 on the second side in a fluidly connected manner with the first block 20.

[0078] In this embodiment, the second block 30 and the third block 40 can be arranged diagonally between the first side 1 and the second side 2.

[0079] Therefore, the fuel cell partition 100 according to this embodiment can form a composite flow field that includes the diagonal flow field formed by the first block 20 arranged in the diagonal direction between the gas inlet 11 and the gas outlet 12, and the stagnant flow field formed by the second block 30 and the third block 40 through fluid connection with the diagonal flow field formed by the first block 20.

[0080] For the diagonal flow field formed in the first block 20 and the stagnant flow field formed in the second block 30 and the third block 40, it will be for Figure 22 and Figure 23 The explanation section provides a detailed description.

[0081] Figure 2 For brevity Figure 1 The diagram of the first part, Figure 3 For brevity Figure 2 The diagram of the first line of the first section. And, Figures 4 to 6 For brevity Figure 3 The diagram shows the first to third variations of the first line of the first block in the first part.

[0082] Reference Figure 2 The first block 20 of this embodiment may include: a plurality of first block lines 21, arranged at 11 intervals G11; and a plurality of first flow paths 22, formed between the plurality of first block lines 21.

[0083] Multiple first blocks 21 can each form a first angle α1 with the first center line CL that passes through the center point in a manner perpendicular to the first side 1 of the body.

[0084] The first angle α1 is the inclination of the first line 21 set along the diagonal direction between the gas inlet 11 and the gas outlet 12 set along the diagonal direction, and can be an acute angle greater than 0 and less than 90 degrees.

[0085] The angles formed by the first center line CL and the multiple block lines 21 can be the same or different.

[0086] In detail, such as Figure 2 As shown, as long as the angles formed by the first center line CL and a portion of the multiple block lines 21 are α1a and α1b, then α1a and α1b can be the same or different angles.

[0087] Therefore, by adjusting the angles formed by the first center line CL and the multiple block lines 21, the width of the flow path 22 formed between the multiple block lines 21 and the width of the flow path based thereon can be adjusted.

[0088] Therefore, according to this embodiment, the flow rate and flow volume of the fluid passing through the first block 20 can be controlled based on the width of the flow path 22 and the width of the flow path based thereon by adjusting the first angle α1 formed by the first center line CL and the plurality of block lines 21 to be the same or different.

[0089] Among them, the range of angle values ​​of the first angle α1 formed by the multiple first block lines 21 and the first center line CL will be specified in the following... Figure 12 The explanation section provides a detailed description.

[0090] Furthermore, the plurality of first lines 21 in this embodiment may each include: a plurality of first components 211, arranged at 12 intervals G12; and a plurality of first mixing sections 212, formed at 12 intervals G12, to fluidly connect the plurality of first flow paths 22.

[0091] like Figure 2 As shown, the plurality of first blocks 21 can respectively make the plurality of first blocks 211 form an angle with the first center line CL and are arranged along the diagonal direction between the gas inlet 11 and the gas outlet 12.

[0092] Furthermore, in the plurality of first mixing sections 212 formed between the plurality of first components 211 by the 12th interval G12, the plurality of first flow paths 22 formed between the plurality of first lines 21 are fluidly connected, and turbulence that fluidly connects the plurality of first flow paths 22 can be generated in the mixing section 212.

[0093] Therefore, according to this embodiment, the gas diffusion toward the membrane electrode assembly is improved by forming a diagonal flow field through which multiple first flow paths 22 that are adjacent to each other and form laminar flow by multiple first mixing sections 212 that generate turbulence, and moisture can be smoothly discharged, thereby preventing H2O overflow in the membrane electrode assembly and the first flow path 22.

[0094] Reference Figures 3 to 6 In this embodiment, the first component 211 forming the first line 21 may include one or more of the following: a straight rib block, a column block, and a wave rib block.

[0095] The following refers to the reference Figure 2 For parts that are identical in the description, detailed explanations will be omitted, and only the necessary parts will be briefly described.

[0096] Figure 3 For brevity Figure 2 The diagram shows the first line of the first block of the first part.

[0097] Reference Figure 3The plurality of first t1 blocks 21t1 may each include: a plurality of first t1 straight rib block components 211t1; and a plurality of 12t1 mixing portions 212t1, formed between the plurality of first t1 straight rib block components 211t1 arranged at 12t1 intervals G12t1.

[0098] Furthermore, multiple first t1 block lines 21t1 can be arranged at intervals G11t1 to form multiple first t1 flow paths 22t1, and a portion of the multiple second t1 mixing sections 212t1 can be arranged in a straight line along an imaginary line (not shown) perpendicular to the first center line CL.

[0099] Figure 4 For brevity Figure 3 The diagram shows the first deformation example of the first line of the first block in the first part.

[0100] Reference Figure 4 Each of the multiple 1t2 blocks 21t2 may include: a 1t rib-shaped block component 211t2, including multiple 1t21 straight rib-shaped block components 211t21 and multiple 1t22 column-shaped block components 211t22 disposed between the multiple 1t21 straight rib-shaped block components 211t21; and multiple 12t2 mixing portions 212t2, formed between the multiple 1t21 straight rib-shaped block components 211t21 and the multiple 1t22 column-shaped block components 211t22 disposed at 12t2 intervals G12t2.

[0101] Furthermore, multiple first t2 block lines 21t2 can be set at 11t2 intervals G12t2 to form multiple first t2 flow paths 22t2, and a portion of the multiple 12t2 mixing sections 212t2 can be arranged in a straight line along an imaginary line (not shown) that is perpendicular to the first center line CL.

[0102] Figure 5 For brevity Figure 3 The diagram shows a second variation of the first t1 block line of the first block part.

[0103] Reference Figure 5 Each of the multiple 1t3 blocks 21t3 may include: multiple 1t3 wave-shaped rib block components 211t3; and multiple 12t3 mixing portions 212t3, formed between the multiple 1t3 wave-shaped rib block components 211t3 arranged at 12t3 intervals G12t3.

[0104] Furthermore, multiple first t3 block lines 21t3 can be arranged at intervals G11t3 to form multiple first t3 flow paths 22t3, and a portion of the multiple second t3 mixing sections 212t3 can be arranged in a straight line along an imaginary line (not shown) perpendicular to the first center line CL.

[0105] Figure 6 For brevity Figure 3 The diagram shows the third variation of the first t1 block line 21t1 in the first block of the first part.

[0106] Reference Figure 6 Each of the multiple 1t4 block lines 21t4 may include: a 1t4 mixed rib block component 211t4, including multiple 1t41 waveform rib block components 211t41 and multiple 1t42 column block components 211t42 disposed between the multiple 1t41 waveform rib block components 211t41; and multiple 12t4 mixed portions 212t4, formed between the multiple 1t4 waveform rib block components 211t4 and the multiple 1t42 column block components 211t42 disposed at 12t4 intervals G12t4.

[0107] Furthermore, multiple first t4 block lines 21t4 can be arranged at intervals G12t4 to form multiple first t4 flow paths 22t4, and a portion of the multiple second t4 mixing sections 212t4 can be arranged in a straight line along an imaginary line (not shown) that is perpendicular to the first center line CL.

[0108] However, the first line 21 and the first component 211 forming it in this embodiment are not limited to Figures 3 to 6 The shapes or arrangements described in the related explanatory section can be implemented by changing block components that form other shapes and block lines that arrange such block components in various orders.

[0109] Figure 7 For brevity Figure 2 A diagram showing the first and second boundary block lines of the fuel cell separator. Figure 8 For brevity Figure 7 The diagram of the first boundary block line in the diagram. Figures 9 to 11 For brevity Figure 8 The diagram shows the first to third deformation examples of the first boundary block line in the figure.

[0110] Reference Figure 7 In this embodiment, the plurality of first block lines 21 may include: a first boundary block line 21a, which faces the end 11a of the gas inlet 11 and forms a boundary with the second block 30; and a second boundary block line 21b, which faces the end 12a of the gas outlet 12 and forms a boundary with the third block 40.

[0111] The first boundary block line 21a may include: a plurality of first block components 211a, arranged at 11a intervals G11a; and a plurality of first mixing sections 212a, formed at 11a intervals G11a, and fluidly connected to a plurality of first flow paths 22.

[0112] Reference Figures 8 to 11 The first block component 211a forming the first boundary block line 21a in this embodiment may include one or more of the following: straight rib block, column block, and wave rib block.

[0113] Reference Figure 8 The first a1 boundary block line 21a1 may include: a plurality of first a1 straight rib block components 211a1; and a plurality of first a1 mixing portions 212a1, formed between the plurality of first a1 straight rib block components 211a1 arranged at a first 11a1 interval G11a1.

[0114] Reference Figure 9 The first a2 boundary block line 21a2 may include: a first a2 rib block component 211a2, including a plurality of first a21 straight rib block components 211a21 and a plurality of first a22 column block components 211a22 disposed between the plurality of first a21 straight rib block components 211a21; and a plurality of first 12a2 mixing portions 212a2, formed between the plurality of first a21 straight rib block components 211a1 and the plurality of first a22 column block components 211a22 disposed at a first 12t2 interval G12a2.

[0115] Reference Figure 10 The first a3 boundary block line 21a3 may include: a plurality of first a3 waveform rib block components 211a3; and a plurality of first a3 mixing portions 212a3, formed between the plurality of first a3 waveform rib block components 211a3 arranged at a first 11a3 interval G11a3.

[0116] Reference Figure 11 The first a4 boundary block line 21a4 may include: a first a4 rib block component 211t2, including a plurality of first a41 waveform rib block components 211a41 and a plurality of first a42 column block components 211a42 disposed between the plurality of first a41 waveform rib block components 211a41; and a plurality of first a4 mixing portions 212a4, formed between the plurality of first a41 waveform rib block components 211a41 and the plurality of first a42 column block components 211a42 disposed at a first 11a4 interval G12a4.

[0117] However, the first boundary block line 21a and the first block component 211a forming it in this embodiment are not limited to Figures 8 to 11The shapes or arrangements described in the related explanatory section can be implemented by changing block components that form other shapes and block lines that arrange such block components in various orders.

[0118] Furthermore, the second boundary block line 21b of this embodiment may include: a plurality of first block components 211b, arranged at 11b intervals G11b; and a plurality of first mixing portions 212b, formed at 11b intervals G11b, and fluidly connected to a plurality of first flow paths 22.

[0119] In this embodiment, the arrangement and shape (not shown) of the first boundary block line 21b and the first b block component 211b can be the same as the arrangement and shape of the second boundary block line 21a and the first a block component 211a described above, so a detailed description of them will be omitted.

[0120] Figure 12 For brevity Figure 2 A diagram showing the changes in the angles formed by the first boundary block line, the second boundary block line, and the first center line CL based on the lengths of the gas inlet and gas outlet, with respect to the first boundary block line and the second boundary block line.

[0121] Reference Figure 12 In this embodiment, the first block 20, the second block 30, and the third block 40 can form a power generation area EGA for generating electricity.

[0122] Furthermore, the power generation area EGA of this embodiment may include: an 11th side EGA11, facing the gas inlet 11; a 12th side EGA12, located on the opposite side of the 11th side EGA11, facing the gas outlet 12; and a 13th side EGA13 and a 14th side EGA14, connecting the 11th side EGA11 and the 12th side EGA12 and located on opposite sides of each other.

[0123] Furthermore, the power generation area EGA may include: a first position W1, located at the intersection of the 11th side EGA11 and the 13th side EGA13, separated by the W1 interval WG1; a second position W2, located at the intersection of the 12th side EGA12 and the 13th side EGA13; a third position W3, located at the intersection of the 12th side EGA12 and the 14th side EGA14, separated by the W2 interval WG2; and a fourth position W4, located at the intersection of the 11th side EGA11 and the 14th side EGA14.

[0124] The following is a detailed description of the inclination of the diagonal direction of the first boundary block line 21a, which is based on the first center line CL of this embodiment.

[0125] The first boundary block line 21a in this embodiment may include: an 11th end 21aE1, facing the end 11a of the gas inlet 11; and a 12th end 21aE2, located on the opposite side of the 11th end 21aE1.

[0126] like Figure 12 As shown, the angle formed by the first boundary block line 21a and the first center line CL can have a value that can vary depending on the position of the 11th side EGA11 of the 11th end 21aE1 of the first boundary block line 21a and the position of the 12th side EGA12 of the 12th end 21aE2.

[0127] In detail, the position on the 13th side EGA13 of the 11th end 21aE1 of the first boundary block line 21a can be located between the first position W1 and the second position W2. When the length of the 13th side EGA13 is EL1 (cm), the first position W1 can be located at a position on the 13th side EGA13 that is 0.05EL1 (cm) away from the 11th side EGA11.

[0128] Furthermore, the position on the 11th side EGA11 of the 11th end 21aE1 of the first boundary block line 21a can be located between the end 11a of the gas inlet 11 and the fourth position W4, depending on the change in the position of the end 11a of the gas inlet 11 based on the change in the length of the gas inlet 11.

[0129] Reference Figure 12 In this embodiment, the maximum angle formed by the first boundary block line 21a and the first center line CL can be the first maximum angle wα1, and the minimum angle formed by the first boundary block line 21a and the first center line CL can be the first minimum angle wα2.

[0130] Therefore, in this embodiment, the first boundary block line 21a and the first center line CL can form the angle between the first minimum angle wα2 and the first maximum angle wα1.

[0131] In detail, when the 11th end 21aE1 of the first boundary block line 21a in this embodiment faces the end 11a of the gas inlet 11 and the 12th end 21aE2 of the first boundary block line 21a is located at the first position W1 of the 13th side EGA13, the first boundary block line 21a and the first center line CL can form a first maximum angle wα1 as the maximum angle.

[0132] The first maximum angle wα1 formed by the first boundary block line 21a and the first center line CL can be a value between 85° and 88°.

[0133] Furthermore, when the 11th end 21aE1 of the first boundary block line 21a in this embodiment faces the end 11a of the gas inlet 11 and the 12th end 21aE2 of the first boundary block line 21a is located at the second position W2 of the 13th side EGA13, the first boundary block line 21a and the first center line CL can form the first minimum angle wα2, which is the minimum angle.

[0134] The first minimum angle wα2 formed by the first boundary block line 21a and the first center line CL can be a value between 6° and 8°.

[0135] The following is a detailed description of the inclination of the diagonal direction of the second boundary block line 21b, which is based on the first center line CL of this embodiment.

[0136] The second boundary block line 21b in this embodiment may include: a 21st end 21bE1, facing the end 12a of the gas outlet 12; and a 22nd end 21bE2, located on the opposite side of the 21st end 21bE1.

[0137] like Figure 12 As shown, the angle formed by the second boundary block line 21b and the first center line CL can have a value that can vary depending on the position of the 12th side EGA12 of the 21st end 21bE1 of the second boundary block line 21b and the position of the 14th side EGA14 of the 22nd end 21bE2.

[0138] Specifically, the position on the 14th side EGA14 of the 21st end 21bE1 of the second boundary block line 21b can be located between the 3rd position W3 and the 4th position W2. When the length of the 14th side EGA14 is EL2 (cm), the 3rd position W3 can be located at a position on the 14th side EGA14 that is 0.05EL2 (cm) away from the 12th side EGA12.

[0139] Furthermore, the position on the 12th side EGA12 of the 21st end 21bE1 of the second boundary block line 21b can be located between the end 12a of the gas outlet 12 and the third position W3, depending on the change in the position of the end 12a of the gas outlet 12 based on the change in the length of the gas outlet 12.

[0140] Reference Figure 12 In this embodiment, the maximum angle formed by the second boundary block line 21b and the first center line CL can be the second maximum angle wα3, and the minimum angle formed by the second boundary block line 21b and the first center line CL can be the second minimum angle wα4.

[0141] Therefore, in this embodiment, the second boundary block line 21b and the first center line CL can form an angle between the second minimum angle wα4 and the second maximum angle wα3.

[0142] In detail, when the 21st end 21bE1 of the second boundary block line 21b in this embodiment faces the end 12a of the gas outlet 12 and the 22nd end 21bE2 of the second boundary block line 21b is located at the 3rd position W3 of the 14th side EGA14, the second boundary block line 21b and the first center line CL can form a second maximum angle wα3 as the maximum angle.

[0143] The second maximum angle wα3 formed by the second boundary block line 21b and the first center line CL can be a value between 85° and 88°.

[0144] Furthermore, when the 21st end 21bE1 of the second boundary block line 21b in this embodiment faces the end 12a of the gas outlet 12 and the 22nd end 21bE2 of the second boundary block line 21b is located at the 4th position W4 of the 14th side EGA14, the second boundary block line 21b and the first center line CL can form a second minimum angle wα4 as the minimum angle.

[0145] The second minimum angle wα4 formed by the second boundary block line 21b and the first center line CL can be a value between 6° and 8°.

[0146] According to this embodiment, the angle formed by the first boundary block line 21a and the first center line CL may be the same as or different from the angle formed by the second boundary block line 21b and the first center line CL, depending on the embodiment.

[0147] Furthermore, in this embodiment, the plurality of first block lines 21 of the first block portion 20 can form an angle between the first minimum angle wα2 and the first maximum angle wα1 or an angle between the second minimum angle wα4 and the second maximum angle wα3 with the first center line CL.

[0148] In this embodiment, the values ​​of the angles formed by the plurality of first block lines 21 of the first block portion 20 and the first center line CL may be the same or different depending on the embodiment.

[0149] Furthermore, the angles formed by the plurality of first block lines 21 of the first block portion 20 and the first center line CL, as well as the angles formed by the first boundary block line 21a and the second boundary block line 21b, in this embodiment may be the same or different depending on the embodiment.

[0150] Figures 13 to 16 To briefly illustrate based on Figure 12 A diagram showing the area changes of the first block 20, the second block 30, and the third block 40 due to the change in the angle formed by the first center line CL, the first boundary block line, and the second boundary block line.

[0151] According to this embodiment, the first boundary block line 21a can form a second angle α2 with the first center line CL, and the second boundary block line 21b can form a third angle α3 with the first center line CL.

[0152] The second angle α2 and the third angle α3 are the inclinations of the first boundary block line 21a and the second boundary block line 21b set between the gas inlet 11 and the gas outlet 12 set along the diagonal direction, and can be acute angles greater than 0 degrees and less than 90 degrees.

[0153] In the total area of ​​the blocks, which is the sum of the areas of the first block 20, the second block 30 and the third block 40, the percentage of the area occupied by each of the first block 20, the second block 30 and the third block 40 can vary by changing one or more of the second angle α2, the third angle α3, the inlet length L1 of the gas inlet 11 and the outlet length L2 of the gas outlet 12.

[0154] Reference Figure 13 The width of the first block 20, which is separated by the first boundary block line 21a forming the second angle α2 with the first center line CL and the second boundary block line 21b forming the third angle α3 with the first center line CL, is A1; the width of the second block 30 is A2; and the width of the third block 40 is A3.

[0155] Reference Figure 13 and Figure 14 The angle formed by the first boundary block line 21a1 and the first center line CL is the same as the second angle α2 formed by the first boundary block line 21a and the first center line CL, and the angle formed by the second boundary block line 21b1 and the first center line CL is the same as the third angle α3 formed by the second boundary block line 21b and the first center line CL.

[0156] However, the length L1a1 of the first inlet 11a1 is transformed into a length L1 that is smaller than that of the first inlet 11.

[0157] If, in this way, the length L1a1 of the first inlet 11a1 is less than the length L1 of the first inlet 11, then as follows: Figure 13 As shown, the area A2a1 of the first a1 block 30a1 is greater than 1a1. Figure 13 The second area A2 of the second part 30.

[0158] Furthermore, the outlet length L2a1 of the outlet 12a1 of the second a1 is transformed into an outlet length l2 that is smaller than that of the first outlet 11.

[0159] If the length L2a1 of the second a1 outlet 12a1 is made smaller than the length l2 of the first outlet 11, then... Figure 14 As shown, the area A3a1 of the second a1 block 40a1 is greater than... Figure 13 The third area of ​​the third block 40 is A3.

[0160] As the area A2a1 of the first a1 block 30a1 and the area A3a1 of the second a1 block 40a1 increase, the area A1a1 of the third a1 block 20a1 will decrease.

[0161] Therefore, according to this embodiment, the inlet length L1a1 of the first inlet 11a1 is modified to be smaller than the inlet length L1 of the first inlet 11, and the outlet length L2a1 of the second outlet 12a1 is modified to be smaller than the outlet length l2 of the first outlet 11. As a result, the proportion (%) of the first area A2a1 of the first block 30a1 and the second area A3a1 of the second block 40a1 can be increased in the total area of ​​the block, and the proportion (%) of the third area A1a1 of the third block 20a1 can be decreased.

[0162] Reference Figure 13 and Figure 15 The inlet length L1 of the gas inlet 11 and the first a2 length L1a2 of the first a2 inlet 11a2, as well as the outlet length L2 of the gas outlet 12 and the second a2 length L2a2 of the second a2 gas outlet 12a2, are the same.

[0163] However, the first angle α2a2 formed by the first boundary block line 21a2 and the first center line CL is transformed to be larger than the second angle α2 formed by the first boundary block line 21a and the first center line CL.

[0164] If we make the first angle α2a2 greater than the second angle α2, then as follows: Figure 15 As shown, the area A2a2 of the first a2 block 30a2 is smaller than... Figure 13 The second area A2 of the second part 30.

[0165] Furthermore, the angle α3a2 formed by the second boundary block line 21b2 and the first center line CL is transformed to be greater than the third angle α3 formed by the second boundary block line 21b and the first center line CL.

[0166] If, in a way that the second angle α3a2 is greater than the third angle α3, then as follows: Figure 15 As shown, the area A3a2 of the second a2 of the second a2 block 40a2 is smaller than... Figure 13 The third area of ​​the third block 40 is A3.

[0167] As the area A2a2 of the first a2 block 30a2 and the area A3a1 of the second a2 block 40a2 decrease, the area A1a2 of the third a2 block 20a2 will increase.

[0168] Therefore, according to this embodiment, the first a2 angle α2a2 formed by the first boundary block line 21a2 and the first center line CL is greater than the second angle α2 formed by the first boundary block line 21a and the first center line CL, and the second a2 angle α3a2 formed by the second boundary block line 21b2 and the first center line CL is greater than the third angle α3 formed by the second boundary block line 21b and the first center line CL. This reduces the proportion (%) of the first a2 area A2a2 of the first a2 block 30a2 and the second a2 area A3a2 of the second a2 block 40a2 in the total area of ​​the block, and increases the proportion (%) of the third a2 area A1a2 of the third a2 block 20a2.

[0169] Reference Figure 13 and Figure 16 The length L1a3 of the first inlet 11a3 is transformed into a length L1 that is smaller than the length L1 of the first inlet 11, and the length L2a3 of the second outlet 12a3 is transformed into a length L2 that is smaller than the length L2 of the first outlet 12.

[0170] Furthermore, the first a3 angle α2a3 formed by the first boundary block line 21a3 and the first center line CL is larger than the second angle α2 formed by the first boundary block line 21a and the first center line CL, and the second a3 angle α3a3 formed by the second boundary block line 21b3 and the first center line CL is larger than the second angle α2 formed by the first boundary block line 21a and the first center line CL.

[0171] In this way, if the lengths of the first a3 inlet L1a3 and the second a3 inlet L2a3 are reduced and the angles of the first a3 and the second a3 are increased, then the area of ​​the first a3 block 30a3 A2a3 and the area of ​​the second a3 block 40a3 A2a3 will decrease and the area of ​​the third a3 block 20a3 A1a3 will increase relatively.

[0172] Therefore, according to this embodiment, the length L1a3 of the first a3 inlet is less than the inlet length L1 of the first inlet 11, the length L2a3 of the second a3 outlet is less than the outlet length L2 of the first outlet 12, the angle α2a3 of the first a3 is greater than the second angle α2 formed by the first boundary block line 21a and the first center line CL, and the angle α3a3 of the second a3 is greater than the second angle α2 formed by the first boundary block line 21a and the first center line CL. This reduces the proportion (%) of the first a3 area A2a3 of the first a3 block 30a3 and the second a3 area A3a3 of the second a3 block 40a3 in the total area of ​​the block and increases the proportion (%) of the third a3 area A1a3 of the third a3 block 20a3.

[0173] According to this embodiment, the fuel cell separator 100 produces more energy in the first block 20, which is arranged along the diagonal direction between the gas inlet 11 and the gas outlet 12, compared to the second block 30 and the third block 40. Therefore, it can be used as a fuel cell separator suitable for a mobile device or an energy storage device, depending on the area ratio (%) of the first block 20 in the total area of ​​the blocks.

[0174] In detail, if the area ratio (%) of the second portion 30 and the third portion 40 of the fuel cell separator 100 increases and the area ratio (%) of the first portion 20 decreases, the gas movement speed per unit time through the smaller area of ​​the first portion 20 will increase, and the energy supply per unit time will increase, thereby achieving rapid energy production, i.e., producing a large amount of energy per unit time. Therefore, the fuel cell separator 100 of this embodiment with a reduced area ratio (%) of the first portion 20 can be used in mobile devices such as automobiles and drones where energy fluctuations per unit time are large.

[0175] Conversely, if the area ratio (%) of the second section 30 and the third section 40 of the fuel cell separator 100 decreases and the area ratio (%) of the first section 20 increases, the gas supply area and gas diffusion area through the larger area of ​​the first section 20 will increase, thereby enabling the production of a large amount of energy per unit area. Therefore, the fuel cell separator 100 of this embodiment with an increased area ratio (%) of the first section 20 can be used in stationary power generation fuel cells such as energy storage devices that require continuous energy production and have low load variability.

[0176] The flow property adjustment mechanism for the flow field based on the area ratio (%) of the first section 20, the second section 30, and the third section 40 will be in conjunction with... Figure 23 and Figure 24 The relevant parts will be explained in detail.

[0177] Figure 17 For brevity Figure 1 The diagrams of the second and third parts are shown. Figure 18 For brevity Figure 17 The diagram of the second line of the second section. And, Figures 19 to 11 For brevity Figure 18 The diagram shows the first to third variations of the second line of the first block in the middle.

[0178] Reference Figure 17 The second block 30 of this embodiment may include: a plurality of second block lines 31, which form a fourth angle α4 with a first center line CL that passes through the center point of the body 10 in a manner perpendicular to the first side 1 of the body 10 and are set at a second interval G22; and a plurality of second flow paths 32, which are formed between the plurality of second block lines 31.

[0179] Unlike the acute angles α1, α2, and α3, the fourth angle α4 is the inclination relative to the first center line CL of the second block line 31, and can have a value between 0 degrees and 360 degrees. Figure 22 As shown, the second component 311 can be formed into various shapes and arrangements.

[0180] The angles formed by the first center line CL and the plurality of second block lines 31 can be the same or different. The width of the flow path and the width of the flow path based thereon can be adjusted by adjusting the angles formed by the first center line CL and the plurality of second block lines 31, thereby controlling the speed and flow rate of the fluid passing through the second block 30.

[0181] Furthermore, the plurality of second lines 31 may each include: a plurality of second components 311, arranged at a 21st interval G21; and a plurality of second mixing sections 312, formed at the aforementioned 21st interval G21, to fluidly connect the plurality of second flow paths 32.

[0182] like Figure 17 As shown, multiple second lines 31 can be formed by arranging multiple second components 311 at angles to the first center line CL and at predetermined intervals.

[0183] Furthermore, the plurality of second mixing sections 312 formed between the plurality of second components 311 arranged at a 21st interval G21 enable the plurality of second flow paths 32 formed between the plurality of second lines 31 at a 22nd interval G22 to be fluidly connected, thereby generating turbulence in the second mixing section 312 that fluidly connects the plurality of second flow paths 32.

[0184] Furthermore, among the multiple second flow paths 32, the second flow path 32 that contacts the first boundary block line 21a can be fluidly connected to the first block section 20 through the first a mixing section 212a formed on the first boundary block line 21a.

[0185] According to the second block 30 of this embodiment, a stagnant flow field can be formed with a flow velocity and direction different from the diagonal flow field formed between the gas inlet 11 and the gas outlet 12.

[0186] For the stagnant flow field formed in the second section 30, it will be in conjunction with Figure 24 and Figure 25 The relevant parts will be explained in detail.

[0187] Reference Figures 18 to 21 In this embodiment, the second component 311 forming the second line 31 may include one or more of the following: a straight rib block, a column block, and a wave rib block.

[0188] The following refers to the reference Figure 17 For parts that are identical in the description, detailed explanations will be omitted, and only the necessary parts will be briefly described.

[0189] Figure 18 For brevity Figure 17 The diagram of the second line of the second part of the middle section.

[0190] Reference Figure 18 Each of the multiple second a1 blocks 31a1 may include: multiple second a1 straight rib block components 311a1; and multiple second 21a1 mixing portions 312a1, formed between the multiple second a1 straight rib block components 311a1 arranged at second 21a1 intervals G21a1.

[0191] Furthermore, multiple second a1 block lines 31a1 can be arranged at intervals G22a1 to form multiple second a1 flow paths 32a1, and a portion of multiple second 21a1 mixing sections 312a1 can be arranged in a straight line along an imaginary line (not shown) perpendicular to the first center line CL.

[0192] Figure 19 For brevity Figure 18 The diagram shows the first deformation example of the second line of the second part of the second section.

[0193] Reference Figure 19 Each of the multiple second a2 blocks 31a2 may include: a second a2 rib-shaped block component 311a2, including multiple second a21 straight rib-shaped block components 311a21 and multiple second a22 column-shaped block components 311a22 disposed between the multiple second a21 straight rib-shaped block components 311a21; and multiple second a2 mixing portions 312a2, formed between the multiple second a21 straight rib-shaped block components 311a21 and the multiple second a22 column-shaped block components 311a22 disposed at a second a2 interval G21a2.

[0194] Furthermore, multiple second a2 block lines 21a2 can be arranged at a second 22a2 interval G22a2 to form multiple second a2 flow paths 32a2, and a portion of the multiple third 32a2 mixing sections 312a2 can be arranged in a straight line along an imaginary line (not shown) that is perpendicular to the first center line CL.

[0195] Figure 20 For brevity Figure 18 The diagram shows a second variation of the second line of the second part of the second section.

[0196] Reference Figure 20 Each of the multiple second a3 blocks 31a3 may include: multiple second a31 wave-shaped rib block components 311a3; and multiple third 32a3 mixing portions 312a3, formed between the multiple second a31 wave-shaped rib block components 311a3 arranged at a second 21a3 interval G21a3.

[0197] Furthermore, multiple second a3 block lines 31a3 can be arranged at intervals G22a3 to form multiple second a3 flow paths 32a3, and a portion of the multiple third 32a3 mixing sections 312a3 can be arranged in a straight line along an imaginary line (not shown) that is perpendicular to the first center line CL.

[0198] Figure 21 For brevity Figure 18 The diagram shows the third variation of the second line of the second part of the second section.

[0199] Reference Figure 21 Each of the multiple second a4 blocks 31a4 may include: a second a4 mixed rib block component 311a4, including multiple second a41 corrugated rib block components 311a41 and multiple second a42 column block components 311a42 disposed between the multiple second a41 corrugated rib block components 311a41; and multiple second a4 mixed portions 32a4, formed between the multiple second a41 corrugated rib block components 311a41 and the multiple second a42 column block components 311a42 disposed at a second 21a4 interval G21a4.

[0200] Furthermore, multiple second a4 block lines 31a4 can be arranged at intervals G21a4 to form multiple second a4 flow paths 22t4, and a portion of the multiple 12t4 mixing sections 212t4 can be arranged in a straight line along an imaginary line (not shown) that is perpendicular to the first center line CL.

[0201] However, the second line 31 and the second component 311 forming it in this embodiment are not limited to Figures 18 to 21The shapes or arrangements described in the related explanatory section can be implemented by changing block components that form other shapes and block lines that arrange such block components in various orders.

[0202] Figure 22 For brevity Figure 18 The figure shows several other variations of the second line of the second part of the middle section.

[0203] Reference Figure 22 In addition to Figures 18 to 21 In addition to the shapes or arrangements described in the related explanatory section, the second component 311 may include a crescent-shaped rib A, a folded short rib B, a dotted rib C, a vertically folded long rib D, a wavy long rib E, and a mixed rib F of short ribs and folded ribs.

[0204] Furthermore, the third block portion 40 of this embodiment may include: a plurality of third block lines 41, which form a fifth angle α5 with a first center line CL that passes through the center point of the body in a manner perpendicular to the first side 1 of the body and are arranged at a third interval G31; and a plurality of third flow paths 42, which are formed between the plurality of third block lines 41.

[0205] Unlike the acute angles α1, α2, and α3, the fifth angle α5 is the inclination relative to the first center line CL of the third block line 41, and can have a value between 0 degrees and 360 degrees. Figure 22 As shown, the third component 411 can be formed in various shapes and arrangements.

[0206] The angles formed by the first center line CL and the plurality of third block lines 41 can be the same or different. The width of the flow path and the width of the flow path based thereon can be adjusted by adjusting the angles formed by the first center line CL and the plurality of third block lines 41, thereby controlling the speed and flow rate of the fluid passing through the third block 40.

[0207] Furthermore, the plurality of third lines 411 may each include: a plurality of third components 411, arranged at a 31st interval G31; and a plurality of third mixing sections 412, formed at a 31st interval G31, to fluidly connect the plurality of third flow paths 42.

[0208] like Figure 17 As shown, multiple third lines 41 can be formed by arranging multiple third components 411 at angles to the first center line CL and at predetermined intervals.

[0209] Furthermore, the plurality of third mixing sections 412 formed between the plurality of third components 311 arranged at a 31st interval G31 enable the plurality of third flow paths 42 formed between the plurality of third lines 41 at a 32nd interval G32 to be fluidly connected, thereby generating turbulence in the third mixing section 412 that fluidly connects the plurality of third flow paths 42.

[0210] Furthermore, among the multiple third flow paths 42, the third flow path 42 that contacts the second boundary block line 21b can be fluidly connected to the first block section 20 through the first b mixing section 212b formed on the second boundary block line 21b.

[0211] According to the third block 40 of this embodiment, a stagnant flow field can be formed with a flow velocity and direction different from the diagonal flow field formed between the gas inlet 11 and the gas outlet 12.

[0212] For the stagnant flow field formed in the third section 40, it will be in conjunction with Figure 24 and Figure 25 The relevant parts will be explained in detail.

[0213] In this embodiment, the arrangement and shape of the third line 41 and the second component 411 (not shown) may be the same as the arrangement and shape of the second line 31 and the second component 311 described above, and therefore a detailed description thereof will be omitted.

[0214] Figure 23 For brevity Figure 1 A diagram showing the fluid flow in the first and second sections of the fuel cell separator. Figure 24 To briefly illustrate the process... Figure 23 The flow of fluid in Figure 1 A diagram of the complex flow field formed by the fuel cell separator.

[0215] Reference Figure 23 Air (O2) flowing into the gas inlet 11 can become multiple main flows (MF) that pass through multiple first flow paths 22 formed diagonally in the first block 20 toward the gas outlet 12 located diagonally. The multiple main flows formed in this way can be fluidly connected to each other through multiple first mixing sections 212 that generate first turbulent flow (TF1), thereby developing into a first flow field in the diagonal direction.

[0216] Reference Figure 24The first flow field formed in the first block 20 may include a first linear diagonal flow field LF1, a first curved diagonal flow field CF1, and a second curved diagonal flow field CF2.

[0217] The first linear diagonal flow field LF1 can be formed along an imaginary line IL that connects the centers of the opposing sides of the gas inlet 11 and the gas outlet 12.

[0218] In detail, the first straight-line diagonal flow field LF1 can be developed into a straight-line flow field in which multiple main streams located to the left and right of the imaginary line IL are interconnected by multiple first mixing sections 212 to flow diagonally between the gas inlet 11 and the gas outlet 12. That is, the first straight-line diagonal flow field LF1 can be formed by the flow of multiple main streams MF that present a straight-line diagonal flow pattern with the imaginary line IL as the center between the gas inlet 11 and the gas outlet 12 located in the diagonal direction.

[0219] The first curved diagonal flow field CF1 is formed between the second block 30 and the first straight diagonal flow field LF1, with the second block 30 as the boundary.

[0220] In detail, the first curved diagonal flow field CF1 can be developed into a first straight diagonal flow field LF1 and a curved flow field in which multiple main streams MF, interconnected by multiple first mixing sections 212 between the first boundary block line 21a and the fourth side 4, flow diagonally between the gas inlet 11 and the gas outlet 12. That is, as Figure 24 As shown, the first curved diagonal flow field CF1 can be formed by the first straight diagonal flow field LF1 and the flow of multiple main MFs formed in the curved interval between the first boundary block line 21a and the fourth side 4.

[0221] Furthermore, the second curved diagonal flow field CF2 can be formed between the third block 40 and the first straight diagonal flow field LF1, with the third block 40 as the boundary.

[0222] In detail, the second curved diagonal flow field CF2 can be developed into a first straight diagonal flow field LF1 and a curved flow field in which multiple main streams MF, interconnected by multiple first mixing sections 212 between the second boundary block line 21b and the third edge 3, flow diagonally between the gas inlet 11 and the gas outlet 12. That is, as Figure 24As shown, the second curved diagonal flow field CF2 can be formed by the first straight diagonal flow field LF1 and the flow of multiple mainstream MFs formed in the curved interval between the second boundary block line 21b and the fourth side 4.

[0223] However, since the gas flows generated in the boundary regions (not shown) of the first curved diagonal flow field CF1 and the second flow field and the first straight diagonal flow field LF1 formed in the second block 30 in this embodiment do not form independent flow fields such as the first flow field to the third flow field, a detailed description of them will be omitted.

[0224] Re-reference Figure 23 Gas (e.g., air (O2)) flowing into the gas inlet 11 can be supplied to the second block 30 through the side of the second block 30 connected to the end 11a of the gas inlet 11 and the first mixing section 212a of the first boundary block line 21a. Wherein, as Figure 22 As shown, the gaseous air (O2) supplied to the second block section 30 through the first mixing section 212a of the first boundary block line 21a is a turbulent flow. The turbulent flow supplied in this way is then supplied as a turbulent flow to the multiple second flow paths 32 through the multiple mixing sections 212 that are fluidly connected to the multiple second flow paths 32.

[0225] Furthermore, since the gas inlet 11 and the first block 22 face each other along the direction of gas (e.g., air (O2)) flow, most of the gas (e.g., air (O2)) flowing into the gas inlet 11 can be supplied to the first block 20 through the first flow path 22. Since the second block 30 is located at a position separated from the end 11a of the gas inlet 11, a very small amount of gas (e.g., air (O2)) other than the air supplied toward the first block 22 will be supplied to the side of the second block 30.

[0226] Therefore, the second block 30, which is provided adjacent to the first corner region A1 of the first side 1 of the main body 10, forms a second flow field through the complex turbulent flow described above.

[0227] Re-reference Figure 24 The second flow field formed in the second block 30 may include a plurality of first turbulent stagnant flow fields TSF1 toward the first corner region A1, a plurality of second turbulent stagnant flow fields TSF2 returning from the first corner region A1, and a plurality of third turbulent stagnant flow fields TSF3 formed along the direction away from the first corner region A1.

[0228] Furthermore, a third flow field can be formed in the third block 40. However, the second flow field formed in the second block 30 and the third flow field formed in the third block 40 are formed by the same mechanism, and the flow field forming the third flow field is the same as the flow field forming the second flow field. Therefore, a detailed description of the third flow field will be omitted.

[0229] The flow properties of the first straight diagonal flow field LF1 and the first curved diagonal flow field CF1 to the second curved diagonal flow field CF2 described above, which include the flow velocity (flow rate), can be adjusted according to the length L1 of the gas inlet 11 and the length L2 of the gas outlet, the second angle α2 and the third angle α3 formed by the first boundary block line 21a and the second boundary block line 21b and the first center line CL, and the variation of the value of the first angle α1 between the multiple first block lines 21 and the first center line CL.

[0230] Re-reference Figures 13 to 16 If the length L1 of the gas inlet 11 and the length L1 of the gas outlet become smaller, the area ratio (%) of the second block 30 and the third block 40 of the fuel cell partition 100 will increase, and the area ratio (%) of the first block 20 will decrease.

[0231] As the area ratio (%) of the first block 20 is reduced to decrease the curve range forming the first curved diagonal flow field CF1 and the second curved diagonal flow field CF2, the first curved diagonal flow field CF1 and the second curved diagonal flow field CF2 will also decrease, and the movement ratio generated by the first straight diagonal flow field LF1 of the gas flowing into the first block 20 will increase.

[0232] Since the gas movement distance between the gas inlet 11 and the gas outlet 12 is smaller in the first straight diagonal flow field LF1 than in the first curved diagonal flow field CF1 and the second curved diagonal flow field CF2, if the gas movement ratio is increased through the first straight diagonal flow field LF1, the gas movement speed per unit time and the energy supply per unit time supplied to the first block 20 can be increased.

[0233] Therefore, since the fuel cell partition 100 of this embodiment can adjust the flow properties, including the flow velocity (flow rate), of the first straight diagonal flow field LF1 and the first curved diagonal flow field CF1 to the second curved diagonal flow field CF2 according to the length L1 of the gas inlet 11, the length L2 of the gas outlet, the second angle α2 and the third angle α3 formed by the first boundary block line 21a and the second boundary block line 21b and the first center line CL, and the value of the first angle α1 formed by the plurality of first block lines 21 and the first center line CL respectively, it can be selectively applied to mobile devices and energy storage devices, etc.

[0234] Figure 25 To briefly show Figure 1 A diagram showing the flow paths of fluids and H2O within a fuel cell cell, including the fuel cell separator. Figure 26 To briefly show in Figure 25 In the fuel cell unit Figure 1 A diagram showing the fluid flow path and H2O flow path in the fuel cell separator. Figure 27 To briefly show in Figure 24 A diagram showing the flow path of the fluid formed by the fuel cell separator that allows hydrogen to flow into the fuel cell unit and the flow path of H2O.

[0235] Reference Figure 25 The fuel cell unit 1000 may include: a fuel cell negative electrode separator 100a; a fuel cell positive electrode separator 200a disposed on the opposite side of the fuel cell negative electrode separator 100a; a membrane electrode assembly 300a located between the fuel cell negative electrode separator 100a and the fuel cell positive electrode separator 200a; a first gasket 400a located between the fuel cell negative electrode separator 100a and the membrane electrode assembly 300a; a first diffusion layer 500a; a second gasket 600a located between the fuel cell positive electrode separator 200a and the membrane electrode assembly 300a; and a second diffusion layer 700a.

[0236] In this embodiment, the fuel cell separator 100 and the fuel cell negative electrode separator 100a included in the fuel cell unit 1000 have the same structure. However, the block lines of the fuel cell positive electrode separator 100a of the unit 1000 are not limited to forming an angle with the first center line CL, and can be formed along a direction parallel to the first center line CL or can form a serpentine flow path structure that does not form a predetermined angle with the first center line CL.

[0237] If H2O overflow occurs during the operation of fuel cell cell 1000 due to the inability to smoothly discharge the H2O generated in membrane electrode assembly 300a, the power generation efficiency of fuel cell cell 1000 may decrease or may become the cause of failure.

[0238] Furthermore, during the operation of the fuel cell unit 1000, if the membrane electrode assembly 300a becomes dry due to excessive discharge of H2O generated in the membrane electrode assembly 300a, the power generation efficiency may decrease or the membrane electrode assembly 300a may be damaged.

[0239] The H2O overflow phenomenon or the drying phenomenon of the membrane electrode assembly 300a mentioned above can be prevented by the first block 20, the second block 30 and the third block 40 of the fuel cell separator 100 in this embodiment. The first block 20 forms a first flow field consisting of a first linear diagonal flow field LF1, a first curved diagonal flow field CF1 and a second curved diagonal flow field CF2. The second block 30 and the third block 40 form a second flow field and a third flow field consisting of multiple turbulent stagnant flow fields.

[0240] The following is for reference Figures 25 to 27 The prevention of H2O overflow and membrane electrode assembly drying phenomenon in the membrane electrode assembly 300a realized by the fuel cell separator 100 is explained in detail.

[0241] like Figure 25 As shown, if air (O2) is supplied to the negative electrode separator 100a of the fuel cell, a portion of the supplied air (O2) will move through the first diffusion layer 500a to the membrane electrode assembly 300a. Furthermore, if hydrogen (H2) is supplied to the positive electrode separator 200a of the fuel cell, the supplied hydrogen (H2) will be decomposed into 2e⁻. - +2H + The air (O2) (1 / 2O2) and hydrogen (H2) (2e) move towards the membrane electrode junction 300a through the second diffusion layer 600a. - +2H + The H2O generated in the membrane electrode junction 300a will combine with the membrane electrode junction 300a to generate H2O. The H2O generated in the membrane electrode junction 300a is supplied to the membrane electrode junction 300a, but does not react with hydrogen (H2), and will be discharged together with the air (O2) discharged through the first gas diffusion layer 500a to the negative electrode separator 100a of the fuel cell (①).

[0242] In this embodiment, in the first block 20 of the fuel cell separator 100, H2O generated in the membrane electrode assembly 300a facing the first block 20 can be smoothly discharged through turbulence generated in the plurality of first mixing sections 212 together with the laminar flow in the first flow path 22. Furthermore, H2O generated in the membrane electrode assembly 300a can be smoothly discharged through the turbulent stagnant flow field formed in the second block 30 and the third block 40 by the plurality of second mixing sections 312 and third mixing sections 412 and the plurality of second flow paths 32 and third flow paths 42.

[0243] Therefore, according to this embodiment, the fuel cell separator 100 can smoothly discharge H2O generated in the membrane electrode assembly 300a from the first block 20, the second block 30, and the third block 40, thereby preventing H2O overflow in the membrane electrode assembly 300a.

[0244] The discharged H2O can pass through the first flow field (refer to) which includes the first linear diagonal flow field LF1, the first curved diagonal flow field CF1, and the second curved diagonal flow field CF2 formed on the negative electrode separator 100a of the fuel cell. Figure 23 (②) It moves along the diagonal direction and is discharged through the gas outlet 12.

[0245] Figure 25 The fuel cell negative electrode separator 100a shown is The region is the area of ​​the fuel cell negative electrode separator 100a facing the first diffusion layer 500a, and is the region of the second block 30 in this embodiment (see reference). Figure 24 The corresponding part.

[0246] The fuel cell negative electrode separator 100a, which corresponds to the second block 30 in this embodiment, can be used in... The region generates turbulent, stagnant flow fields TSF1, TSF2, and TSF3 (refer to...). Figure 24 The second flow field, including the first flow field.

[0247] As described above, the H2O generated in the membrane electrode junction 300a can be generated through... The turbulent, stagnant flow fields TSF1, TSF2, and TSF3 generated in the region are smoothly discharged to the negative electrode separator 100a of the fuel cell. area.

[0248] However, due to the flow from the membrane electrode assembly 300a to the fuel cell negative electrode separator 100a... The H2O discharged from the area will not be able to pass through The turbulent, stagnant flow fields TSF1, TSF2, and TSF3 generated in the region are smoothly discharged along the gas outlet 12, and thus will be able to... The concentration of H2O in the region increases.

[0249] The fuel cell negative electrode separator 100a, which corresponds to the third block 40 in this embodiment, can be used in... The region generates a third flow field that includes the turbulent stagnant flow fields TSF1, TSF2, and TSF3 (not shown).

[0250] However, due to Figure 25 The fuel cell negative electrode separator 100a shown is From the membrane electrode assembly 300a in the region The regionally achieved H2O discharge and its flow to the fuel cell negative electrode separator 100a The explanation of H2O discharge and H2O concentration increase achieved at gas outlet 12 in the region is related to the negative electrode separator 100a of the fuel cell. The descriptions for the regions are the same, so their detailed descriptions will be omitted in the following text.

[0251] Reference Figure 25 ,like Region and If the concentration of H2O in a region reaches or exceeds a specified level, it will cause [a problem] due to the concentration difference. H2O from the region flows to the positive electrode separator 200a of the fuel cell. Regional movement (③), The H2O in the region will flow towards the positive electrode separator 200a. Regional movement (④).

[0252] Like this, to the positive electrode separator 200a of the fuel cell The H2O moving in the region can move to the positive electrode separator 200a of the fuel cell through the hydrogen (H2) flowing into it (⑤).

[0253] H2O moving toward the positive electrode separator 200a of the fuel cell in this way can move toward the membrane electrode assembly 300a through electroendosmosis generated as the fuel cell cell 1000 is started (⑥).

[0254] Furthermore, the negative electrode separator 100a of the fuel cell A portion of the H2O in the region will not diffuse to Instead of supplying the region, it is supplied to the membrane electrode assembly 300a (⑦).

[0255] Therefore, according to the fuel cell separator 100 of this embodiment, the following processes can be formed: ①→② (H2O is discharged from the negative electrode separator 100a of the fuel cell) and ④→⑤ (H2O is discharged from the positive electrode separator 200a of the fuel cell) from the membrane electrode assembly 300a to the outside of the fuel cell unit 1000; and ①→(③ and ④)→⑤→⑥ (H2O is discharged from the positive electrode separator 200a of the fuel cell) from the discharge of H2O generated in the fuel cell unit 1000 to the inside of the fuel cell unit 1000. The process from region ⑦ constitutes a three-dimensional H2O cycle path.

[0256] Finally, the H2O generated in the membrane electrode assembly 300a can be smoothly discharged to the outside of the fuel cell unit 1000 through the three-dimensional H2O circulation path of the fuel cell unit 1000, which includes the fuel cell separator 100 of this embodiment, thereby preventing H2O overflow. A portion of the H2O discharged from the membrane electrode assembly 300a can be supplied to the membrane electrode assembly 300a through the three-dimensional H2O circulation path, thereby preventing the membrane electrode assembly 300a from drying out.

[0257] As described above, according to the fuel cell cell 1000 using the fuel cell separator 100 of this embodiment, even without the supply of an external humidifying medium, moisture can be supplied to the membrane electrode assembly 300a through a three-dimensional H2O circulation path that runs through the fuel cell cell 1000.

[0258] According to the fuel cell unit 1000 which includes the fuel cell partition 100 of this embodiment, there is no need to install a humidification device for humidifying the fuel cell unit 1000 in the fuel cell system (not shown), thereby reducing the overall volume and weight of the fuel cell system.

[0259] Figure 28 A diagram is provided to briefly illustrate the fuel cell separator of the second embodiment of the present invention.

[0260] Reference Figure 28 The fuel cell partition 200 of this embodiment may include a body 210, a first block 220, a second block 230, a third block 240, and a pair of fluid channels.

[0261] The following is about being and Figures 1 to 23 The second embodiment of the present invention, which has the same structure as the body 10, first block 20, second block 30, and third block 40 of the fuel cell separator 100 shown in the first embodiment of the present invention, will omit detailed descriptions of the body 210, first block 220, second block 230, and third block 240.

[0262] Reference Figure 28In this embodiment, the paired fluid channels of the fuel cell partition 200 are parallel to the first center line CL that passes through the center point of the body 210 at a right angle to the first side 1 of the body 210, and can be separated from each other by the first block 220, the second block 230 and the third block 240.

[0263] Figure 29 For brevity Figure 28 A diagram of paired fluid channels in a fuel cell separator.

[0264] Reference Figure 29 In this embodiment, the paired fluid channels may include a first fluid channel 250 and a second fluid channel 260.

[0265] According to this embodiment, the first fluid channel 250 is disposed between the first side 1 and the second side 2, facing one end 11b of the gas inlet 11, and can be fluidly connected to the first block 220 and the third block 240.

[0266] In detail, the first fluid channel 250 extends from the portion 220a of the first block 220 along the side of the first block 220 to the portion 240a of the third block 240, thereby being arranged in a manner facing one end 11b of the gas inlet 11.

[0267] Furthermore, according to this embodiment, the second fluid channel 250 can face one end 12b of the gas outlet 12, and is disposed between the first side 1 and the second side 2, and can be fluidly connected to the first block 220 and the second block 230.

[0268] In detail, the second fluid channel 260 extends from the portion 230a starting from the second block 230 along the side of the second block 230 to the portion 220b ending from the first block 220, thereby being arranged in a manner facing one end 12b of the gas outlet 12.

[0269] According to this embodiment, a 22nd linear flow field LF22 can be formed in the first fluid channel 250 by the fluid flowing in from the first gas inlet 11, and a 23rd linear flow field LF23 can be formed in the second fluid channel 260 by the fluid flowing in from the second block 230.

[0270] The 22nd linear flow field LF22 formed in the first fluid channel 250 and the 23rd linear flow field LF23 formed in the second fluid channel 260 will be described in detail below.

[0271] However, due to the flow of fluid in the first block 220, the second block 230, and the third block 240 of the fuel cell separator 200 of the second embodiment of the present invention and Figure 23 shown Figure 1 The fluid flow in the first section 20, the second section 30 and the third section 40 of the fuel cell separator 100 is the same, so a detailed description of them will be omitted in the following.

[0272] Furthermore, since the fuel cell unit including the fuel cell separator 200 of the second embodiment of the present invention and Figure 25 The shown will Figure 1 The fluid and H2O in the fuel cell cell, including the fuel cell separator 100, follow the same flow path, so a detailed description of it will be omitted in the following content.

[0273] Figure 30 To briefly illustrate in the context of Figure 28 The diagram shows the complex flow field formed by the paired fluid channels within the fuel cell separator. Figure 31 To briefly show in Figure 25 In the fuel cell unit Figure 28 A diagram showing the flow paths of fluid and H2O formed by the fuel cell separator.

[0274] According to this embodiment, the 21st flow field 21 formed in the first block 220 may include a 21st straight diagonal flow field LF21, a 21st curved diagonal flow field CF21, and a 22nd curved diagonal flow field CF22.

[0275] Among them, due to the formation mechanism of the 21st linear diagonal flow field LF21, the 21st curved diagonal flow field CF21, and the 22nd curved diagonal flow field CF22 in this embodiment, and Figure 24 The formation mechanisms of the first linear diagonal flow field LF1, the first curved diagonal flow field CF1, and the second curved diagonal flow field CF2 are the same, so detailed descriptions of them are omitted.

[0276] The 22nd flow field 22 formed in the second block 230 of this embodiment may include a plurality of first turbulent stagnant flow fields TSF21, a plurality of second turbulent stagnant flow fields TSF22 and a plurality of third turbulent stagnant flow fields TSF23.

[0277] Since the formation mechanism of the 23rd flow field 23 formed in the 3rd block 240 is the same as the formation mechanism of the 22nd flow field 22 formed in the 2nd block 230, a detailed description of it will be omitted.

[0278] Re-reference Figure 28As the fluid moves away from the gas inlet 11, the fluid flow velocity (flow rate) will decrease. This is because the flow velocity (flow rate) of the 22nd curved diagonal flow field CF22 gradually decreases from the gas inlet 11 toward the gas outlet 12 due to energy loss caused by turbulence and friction generated on the first side of the first block 220.

[0279] Furthermore, as the 22nd curved diagonal flow field CF22 flows from the gas inlet 11 toward the gas outlet 12, the amount of oxygen (O2) transported by the 22nd curved diagonal flow field CF22 will decrease.

[0280] Furthermore, with such Figure 31 Power generation will be carried out in the manner shown, and will be achieved in the third section 240. Excessive accumulation of H2O in the region leads to H2O overflow.

[0281] According to this embodiment, the reduction in flow velocity (flow rate), reduction in oxygen (O2) amount, and H2O overflow phenomenon of the third block 240 can be prevented by the 22nd linear flow field LF22 formed in the first fluid channel 250.

[0282] In detail, the first fluid channel 250 is arranged in a straight line along the side of the first block 220 and the third block 240 between the first side 1 and the second side 2, and a second straight flow field LF22 is formed by the fluid flowing in from the gas inlet 11 toward the first fluid channel 250.

[0283] In the 22nd linear flow field LF22, the fluid flows along a straight flow path without frictional resistance. The flow velocity (flow rate) of the 22nd linear flow field LF22 is faster than the flow velocity (flow rate) of the 22nd curved diagonal flow field CF22, which is formed by multiple block lines including multiple block components and mixing parts of the 1st block 220. Based on this, the flow rate will also increase.

[0284] Therefore, as Figure 30 As shown, fluid and oxygen (O2) contained in the fluid are supplied from the 22nd straight flow field LF22 flowing along the direction from the 1st side 1 to the 2nd side 2 toward the 22nd curved diagonal flow field CF22. This supply of fluid and oxygen (O2) can prevent the reduction of the flow velocity (flow rate) and the amount of oxygen (O2) in the 22nd curved diagonal flow field CF22.

[0285] Furthermore, the fluid supplied from the 22nd linear flow field LF22 to the 3rd block 240 accumulates in... A portion of the H2O in the region will be discharged to the gas outlet 12 (⑧), thereby preventing the overflow of H2O in the third block 240.

[0286] Re-reference Figure 28 As the fluid moves away from the gas inlet 11, the fluid flow velocity (flow rate) will decrease. This is because the flow velocity (flow rate) of the 21st curved diagonal flow field CF21 gradually decreases from the gas inlet 11 toward the gas outlet 12 due to energy loss caused by turbulence and friction generated on the second side of the first block 220.

[0287] Furthermore, the membrane electrode assembly 300a in the portion through which the 21st curved diagonal flow field CF21 passes may become dry due to the dry air supplied through the inlet 11 and the heat generated by power generation.

[0288] Furthermore, with such Figure 31 Power generation will be carried out in the manner shown, and will be achieved in the second section 230. Excessive accumulation of H2O in the region leads to H2O overflow.

[0289] According to this embodiment, the reduction in flow velocity (flow rate) of the 21st curved diagonal flow field CF21, the drying of the membrane electrode assembly 300a, and the H2O overflow of the second block 230 can be prevented by the 21st linear flow field LF21 formed in the second fluid channel 260.

[0290] In detail, the second fluid channel 250 is arranged in a straight line along the side of the first block 220 and the second block 230 between the first side 1 and the second side 2, and a second straight flow field LF23 is formed by the fluid flowing from the second block 230 toward the second fluid channel 260.

[0291] In the 23rd linear flow field LF23, the fluid flows along a straight flow path without frictional resistance. The flow velocity (flow rate) of the 23rd linear flow field LF23 is faster than the flow velocity (flow rate) of the 21st curved diagonal flow field CF21, which is formed by multiple block lines including multiple block components and mixing parts of the 1st block 220. Based on this, the flow rate will also increase.

[0292] Therefore, as Figure 30 As shown, fluid is supplied from the 23rd straight flow field LF23 flowing along the direction from the 1st side 1 to the 2nd side 2 toward the 21st curved diagonal flow field CF21. This fluid supply can prevent the reduction of the flow velocity (flow rate) of the 21st curved diagonal flow field CF21.

[0293] And, as Figure 31As shown, a portion of the H2O accumulated in the second block 230 will be discharged from the second block 230 through the 23rd linear flow field LF23 and supplied to the portion of the membrane electrode assembly 300a that will be traversed by the 21st curved diagonal flow field CF21, thereby preventing the membrane electrode assembly 300a from drying out.

[0294] And, as Figure 31 As shown, a portion of the H2O accumulated in the second block 230 will be discharged from the second block 230 to the gas outlet 12 (⑨) through the 23rd linear flow field LF23, thereby preventing the overflow of H2O in the second block 230.

[0295] Figure 32 This is a graphical representation comparing the time-based cell voltage (V) characteristics of a novel fuel cell cell using the fuel cell separator of the second embodiment of the present invention and a conventional fuel cell cell using a conventional fuel cell separator. Figure 33 To show in magnified form Figure 32 The chart image of section S1 in the image.

[0296] The cell voltage (V) characteristics based on time (seconds) of the novel fuel cell cell using the fuel cell separator of the second embodiment of the present invention and the conventional fuel cell cell using the conventional fuel cell separator described below were measured in a non-humidified state without using a humidifier on the novel fuel cell cell and the conventional fuel cell cell.

[0297] Furthermore, the existing fuel cell cell employs multiple straight flow paths that fluidly connect the inlet and outlet, forming the existing fuel cell separator between the inlet and outlet.

[0298] Furthermore, analysis revealed that the voltage characteristics of the fuel cell unit employing the fuel cell separator of the second embodiment of the present invention are almost similar to those of the fuel cell unit employing the fuel cell separator of the first embodiment of the present invention. Therefore, a detailed description of the voltage characteristics of the fuel cell unit employing the fuel cell separator of the first embodiment of the present invention will be omitted in the following description.

[0299] Reference Figure 32 Analysis revealed that the battery voltage (NTV) of the novel fuel cell cell using the fuel cell separator of the second embodiment of the present invention was approximately 0.725V at the battery start-up time, and stabilized between approximately 0.718V and 0.719V starting about 60 seconds after start-up (P1).

[0300] Subsequently, analysis revealed that the voltage measurement results of the novel fuel cell cell of the second embodiment of the present invention exhibited a stable voltage characteristic between approximately 0.718V and 0.719V over a period of approximately 10 minutes (approximately 3900 seconds).

[0301] However, refer to Figure 32 and Figure 33 Analysis revealed that the cell voltage (PTV) of an existing fuel cell unit using the existing fuel cell separator drops sharply to below 0.7V (P2) after startup, and decreases to below 0.69V within about 60 seconds after startup, after which the cell stops starting.

[0302] As mentioned above, based on the existing fuel cell separators used in existing fuel cell cells, it can be seen that in the absence of humidification without a humidification device, the fuel cell cell will fail to operate due to the sharp decrease in the cell voltage V.

[0303] However, according to the fuel cell separator of the second embodiment of the present invention used in the novel fuel cell cell, it can be seen that the cell voltage of the fuel cell cell can be stably maintained even in the absence of humidification without the use of a humidification device, thereby enabling the fuel cell cell to operate stably.

[0304] Existing fuel cell systems are limited in size and weight due to humidification devices and auxiliary devices used for starting them, thus restricting the devices and technologies in which fuel cell systems can be used.

[0305] Therefore, according to the fuel cell system (not shown) that includes the fuel cell separators 100 and 200 of this embodiment, there is no need for a humidification device and an auxiliary device for starting it, which can significantly reduce the size and weight of the fuel cell system, thereby expanding the range of devices and fields in which fuel cell systems can be used.

[0306] Furthermore, according to the fuel cell system that includes the fuel cell separators 100 and 200 of this embodiment, the price of the fuel cell system can be reduced by eliminating the humidification device and the auxiliary device for starting it, thereby improving price competitiveness in the related technical field.

[0307] The above description refers to embodiments of the present invention. Those skilled in the art will understand that other specific implementations can be carried out without altering the technical concept or essential features of the present invention. Therefore, the various embodiments described above are merely illustrative in all respects and should not be construed as limiting.

Claims

1. A fuel cell separator, characterized in that, include: The body (10) includes a gas inlet (11) formed along the first side (1) and a gas outlet (12) formed along the second side (2) opposite to the first side in the diagonal direction of the gas inlet (11). The first part (20) is arranged along the diagonal direction and is fluidly connected to the gas inlet and the gas outlet. The second section (30) is disposed adjacent to the first section in a fluid-connected manner in the first corner region (A1) of the first side located on the opposite side of the gas inlet; and The third part (40) is disposed adjacent to the first part in a fluid connection manner in the second corner region (A2) of the second side located on the opposite side of the gas outlet.

2. The fuel cell separator according to claim 1, characterized in that, The first part mentioned above includes: Multiple first blocks (21) are arranged at a first angle (α1) with a first center line (CL) that penetrates the center point of the body perpendicular to the first side of the body and at an eleventh interval (G11); and Multiple first flow paths (22) are formed between the aforementioned multiple first block lines.

3. The fuel cell separator according to claim 2, characterized in that, The aforementioned multiple first lines (21) include: Multiple first components (211) are arranged at the 12th interval (G12); and Multiple first mixing sections (212) are formed at the aforementioned 12th interval (G12) and are fluidly connected to the aforementioned multiple first flow paths (22).

4. The fuel cell separator according to claim 2, characterized in that, The aforementioned multiple first blocks (21) include: The first boundary block line (21a) faces the end (11a) of the gas inlet and forms a boundary with the second block (30); and The second boundary block line (21b) faces the end (12a) of the gas outlet and forms a boundary with the third block (40).

5. The fuel cell separator according to claim 4, characterized in that, The aforementioned first boundary block line (21a) includes: Multiple first-block components (211a) are arranged at 11a intervals (G11a); and Multiple first-a mixing sections (212a) are formed at the aforementioned 11a intervals (G11a) and are fluidly connected to the aforementioned multiple first flow paths (22). The aforementioned second boundary block line (21b) includes: Multiple 1b block components (211b) are arranged at 11b intervals (G11b); and Multiple first b mixing sections (212b) are formed at the above-mentioned 11b intervals (G11b) and are fluidly connected to the above-mentioned multiple first flow paths (22).

6. The fuel cell separator according to claim 4, characterized in that, The first boundary block line (21a) forms a second angle (α2) with the first center line (CL), and the second boundary block line (21b) forms a third angle (α3) with the first center line (CL).

7. The fuel cell separator according to claim 6, characterized in that, In the total area of ​​the blocks, which is the sum of the areas of the first block (20), the second block (30), and the third block (40), the percentage of the area of ​​each of the first block (20), the second block (20), and the third block (40) varies depending on one or more of the changes in the second angle (α2), the third angle (α3), the inlet length (L1) of the gas inlet, and the outlet length (L2) of the gas outlet.

8. The fuel cell separator according to claim 1, characterized in that, The second part (30) mentioned above includes: Multiple second lines (31) form a fourth angle (α4) with the first center line (CL) that penetrates the center point of the body perpendicular to the first side of the body and are arranged at a second interval (G22); and Multiple second flow paths (32) are formed between the aforementioned multiple second block lines (31).

9. The fuel cell separator according to claim 8, characterized in that, The aforementioned multiple second lines (31) include: Multiple second components (311) are arranged at 21st intervals (G21); and Multiple second mixing sections (312) are formed at the aforementioned second 21 intervals (G21) and are fluidly connected to the aforementioned multiple second flow paths (32).

10. The fuel cell separator according to claim 1, characterized in that, The third part (40) mentioned above includes: Multiple third lines (41) form a fifth angle (α5) with the first center line (CL) that penetrates the center point of the body perpendicular to the first side of the body and are arranged at a third interval (G31); and Multiple third flow paths (42) are formed between the aforementioned multiple third blocks.

11. The fuel cell separator according to claim 10, characterized in that, The aforementioned multiple third lines (41) include: Multiple third components (411) are arranged at the 31st interval (G31); and Multiple third mixing sections (412) are formed at the aforementioned third 31 intervals (G31) and are fluidly connected to the aforementioned multiple third flow paths (42).

12. The fuel cell separator according to claim 1, characterized in that, It also includes a pair of fluid channels (250, 260) that are parallel to the first center line (CL) that passes through the center point of the body in a manner perpendicular to the first side of the body, and are spaced apart from the first block (20), the second block (30) and the third block (40).

13. The fuel cell separator according to claim 12, characterized in that, The aforementioned paired fluid channels (250, 260) include: A first fluid channel (250), facing one end (11b) of the gas inlet (11), is disposed between the first side (1) and the second side (2), and is fluidly connected to the first block (20) and the third block (40); and The second fluid channel (250) is disposed between the first side (1) and the second side (2), facing one end (12b) of the gas outlet (12), and is fluidly connected to the first block (20) and the second block (30).

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