CN-122029646-A - Fuel cell separator

Abstract

The present invention relates to a fuel cell separator, and more particularly, to a fuel cell separator of the present embodiment, which may include a body including a gas inflow port formed along a 1 st side and a gas outflow port formed along a 2 nd side opposite to the 1 st side in a diagonal direction of the gas inflow port, a 1 st block portion provided in the body in the diagonal direction and fluidly connecting the gas inflow port and the gas outflow port, a 2 nd block portion provided adjacent to a 1 st corner region of the 1 st side on an opposite side of the gas inflow port in fluid connection with the 1 st block portion, and a3 rd block portion provided adjacent to a 2 nd corner region of the 2 nd side on an opposite side of the gas outflow port in fluid connection with the 1 st block portion.

Inventors

• JIN DASHENG
• Bai Changzhe
• JIN DOUXI

Assignees

• 泰拉里克斯株式会社

Dates

Publication Date

20260512

Application Date

20231129

Priority Date

20231124

Claims (13)

1. 1. A fuel cell separator, characterized by comprising: A main body (10) including a gas inlet (11) formed along a1 st side (1) and a gas outlet (12) located in a diagonal direction of the gas inlet (11) and formed along a2 nd side (2) facing the 1 st side; a1 st block (20) disposed along the diagonal direction and fluidly connecting the gas inlet and the gas outlet; A2 nd block (30) disposed adjacent to the 1 st corner region (A1) of the 1 st side located on the opposite side of the gas inflow port so as to be in fluid connection with the 1 st block, and And a 3 rd block (40) disposed adjacent to the 1 st block in A2 nd corner region (A2) of the 2 nd side located on the opposite side of the gas outflow port so as to be in fluid connection therewith.
2. 2. The fuel cell separator according to claim 1, wherein the 1 st block portion includes: A plurality of 1 st lines (21) which form a1 st angle (alpha 1) with a1 st Center Line (CL) penetrating the center point of the body in a manner perpendicular to the 1 st side of the body and are arranged at 11 th intervals (G11), and And a plurality of 1 st flow paths (22) formed between the 1 st block lines.
3. 3. The fuel cell separator according to claim 2, wherein the plurality of 1 st block lines (21) each include: a plurality of 1 st block members (211) arranged at 12 th intervals (G12), and A plurality of 1 st mixing portions (212) formed at the 12 th interval (G12) and fluidly connecting the plurality of 1 st flow paths (22).
4. 4. The fuel cell separator according to claim 2, wherein the plurality of 1 st block lines (21) includes: A 1st boundary block line (21 a) which is opposite to the end (11 a) of the gas inflow port and forms a boundary with the 2nd block portion (30), and A2 nd boundary block line (21 b) is formed to face the end (12 a) of the gas outflow port and to form a boundary with the 3 rd block portion (40).
5. 5. The fuel cell separator according to claim 4 wherein, The 1 st boundary block line (21 a) includes: A plurality of 1 st a block members (211 a) arranged at 11 th a intervals (G11 a), and A plurality of 1 st a mixing sections (212 a) formed at the 11 st a intervals (G11 a) and fluidly connected to the plurality of 1 st channels (22), The 2 nd boundary block line (21 b) includes: A plurality of 1 b-th block members (211 b) arranged at 11 b-th intervals (G11 b), and A plurality of 1 st mixing parts (212 b) formed at the 11 st b intervals (G11 b) and fluidly connected with the plurality of 1 st flow paths (22).
6. 6. The fuel cell separator according to claim 4, wherein the 1 st boundary block line (21 a) forms a2 nd angle (α2) with the 1 st Center Line (CL), and the 2 nd boundary block line (21 b) forms a3 rd angle (α3) with the 1 st Center Line (CL).
7. 7. The fuel cell separator according to claim 6, wherein, The ratio (%) of the areas of the 1 st block (20), the 2 nd block (20) and the 3 rd block (40) to the total block area obtained by adding the areas of the 1 st block (20), the 2 nd block (30) and the 3 rd block (40) is different depending on one or more of the 2 nd angle (α2), the 3 rd angle (α3), the inlet length (L1) of the gas inlet and the outlet length (L2) of the gas outlet.
8. 8. The fuel cell separator according to claim 1, wherein the 2 nd block portion (30) includes: A plurality of 2 nd lines (31) forming a fourth angle (alpha 4) with a1 st Center Line (CL) passing through the center point of the body perpendicularly to the 1 st side of the body and arranged at 2 nd intervals (G22), and And a plurality of 2 nd flow paths (32) formed between the plurality of 2 nd block lines (31).
9. 9. The fuel cell separator according to claim 8, wherein the plurality of 2 nd block lines (31) each include: A plurality of 2 nd block members (311) arranged at 21 st intervals (G21), and A plurality of 2 nd mixing sections (312) formed at the 21 st interval (G21) and fluidly connecting the plurality of 2 nd channels (32).
10. 10. The fuel cell separator according to claim 1, wherein the 3 rd block portion (40) includes: a plurality of 3 rd lines (41) which form a fifth angle (alpha 5) with a1 st Center Line (CL) penetrating the center point of the body perpendicularly to the 1 st side of the body and are arranged at 3 rd intervals (G31), and And a plurality of 3 rd flow paths (42) formed between the plurality of 3 rd block lines.
11. 11. The fuel cell separator according to claim 10, wherein the plurality of 3 rd block lines (41) each include: A plurality of 3 rd block members (411) arranged at 31 st intervals (G31), and A plurality of 3 rd mixing sections (412) formed at the 31 st interval (G31) and fluidly connecting the plurality of 3 rd channels (42).
12. 12. The fuel cell separator according to claim 1, further comprising a pair of fluid passages (250, 260) arranged in parallel with a1 st Center Line (CL) passing through a center point of the body so as to be perpendicular to the 1 st side of the body, the 1 st block portion (20), the 2 nd block portion (30), and the 3 rd block portion (40) being spaced apart from each other.
13. 13. The fuel cell separator according to claim 12, wherein said pair of fluid passages (250, 260) includes: a1 st fluid passage (250) provided between the 1 st side (1) and the 2 nd side (2) and facing one end (11 b) of the gas inflow port (11) and fluidly connected to the 1 st block (20) and the 3 rd block (40), and And a2 nd fluid passage (250) provided between the 1 st side (1) and the 2 nd side (2) so as to face one end (12 b) of the gas outflow port (12) and fluidly connected to the 1 st block (20) and the 2 nd block (30).

Description

Fuel cell separator Technical Field The present invention relates to a fuel cell separator, and more particularly, to a fuel cell separator including a body including a gas inflow port and a gas outflow port, a1 st block portion provided in the body, a2 nd block portion fluidly connected to the 1 st block portion, and a 3 rd block portion fluidly connected to the 1 st block portion, wherein overflow phenomenon and drying phenomenon of a membrane electrode assembly are prevented and flow properties of a flow field are regulated according to structures and area ratios of the 1 st block portion, the 2 nd block portion, and the 3 rd block portion. Background Fuel cells, which are classified into solid oxide fuel cells, molten carbonate fuel cells, and polymer electrolyte membrane fuel cells according to the kind of electrolyte, are power generation devices that convert chemical energy generated when fuel is oxidized into electric energy. The polymer electrolyte membrane fuel cell (Polymer Electrolyte Membrane Fuel Cell, PEMFC) of the fuel cell includes a membrane electrode assembly (Membrane electrode assembly, MEA) provided with electrode layers having a positive electrode and a negative electrode around an electrolyte membrane permeable to hydrogen ions, a gas diffusion layer (Gas Diffusion Layer, GDL) for uniformly distributing a reaction gas, and a separator (Bipolar plate) for supplying the reaction gas to the gas diffusion layer and discharging the generated water. The flow path structure of the conventional separator for a fuel cell for diffusing a reaction gas and discharging water includes a two-dimensional flow path structure including a serpentine flow path continuously forming a curved flow path, a parallel flow path formed by arranging a plurality of linear flow path groups in parallel, a parallel and serial mixed flow path formed by connecting the parallel flow paths to each other, and a projected flow path formed by arranging a plurality of dot-shaped projections, and a three-dimensional flow path structure formed by a mesh structure. However, the fuel cell separator in which the serpentine flow path, the parallel flow path, and the parallel and serial mixed flow paths are formed has a problem in that the fuel cell separator cannot properly remove moisture generated in the Membrane Electrode Assembly (MEA) because the gas flows in a laminar flow manner in the flow paths, and the gas pressure gradually decreases toward the gas outflow port side, so that there is a high possibility that flooding (flooding) of the Membrane Electrode Assembly (MEA) occurs due to clogging of the flow paths with moisture. Further, the fuel cell separator using the protrusion-type flow path structure or the flow path structure in which the protrusion-type flow path structure and the other flow path structure are mixed has a problem in that moisture generated in the Membrane Electrode Assembly (MEA) is excessively discharged to cause the Membrane Electrode Assembly (MEA) to dry. In addition, the fuel cell separator provided with the three-dimensional flow path has a problem that moisture is not removed in the three-dimensional flow path having a complicated structure, and thus processing and assembly are difficult and production cost increases. In particular, in the conventional fuel cell system, in order to prevent the Membrane Electrode Assembly (MEA) from drying out, it is necessary to attach a fuel cell stack humidification device, which has a problem that the volume and weight of the fuel cell system are increased and the device or field in which the fuel cell system can be used is limited due to the increase in the volume and weight of the fuel cell system. [ Prior Art literature ] [ Patent literature ] Patent document 1 KR 2017-0050689 (public at 11.05.2017) Patent document 2 KR 2010-0112354 (10/19/2010 publication) Disclosure of Invention Technical problem The present invention has been made to solve the above-described problems, and provides a fuel cell separator having a flow path structure capable of preventing flooding and drying of a Membrane Electrode Assembly (MEA). The present invention also provides a fuel cell separator having a flow path structure in which a three-dimensional H 2 O circulation path for reusing moisture generated in a Membrane Electrode Assembly (MEA) for autonomous humidification of the MEA can be formed in a fuel cell unit. The present invention also provides a fuel cell separator having a flow path structure that can reduce the total volume and weight of a fuel cell system by eliminating a humidifier in the fuel cell system. The technical problems of the present invention are not limited to the above-mentioned technical problems, and other technical problems not mentioned can be clearly understood by those skilled in the art from the following description. Technical proposal The fuel cell separator according to an embodiment of the present invention may include a body including a gas