Fuel cell polar plate flow channel structure, fuel cell bipolar plate and hydrogen fuel cell

Abstract

The application discloses a fuel cell polar plate flow channel structure, a fuel cell bipolar plate and a hydrogen fuel cell. The fuel cell polar plate flow channel structure is characterized in that a plurality of first flow channels and second flow channels are arranged on the cell polar plate, a plurality of mass transfer chambers are arranged on the cell polar plate in series on the first flow channels, the cross-sectional area of the second flow channels is smaller than that of the first flow channels, and the cross-sectional area of the mass transfer chambers is larger than that of the first flow channels. The larger cross-sectional area of the mass transfer chambers provides more space for the working medium, so that the working medium can be mixed and diffused better, thereby improving the mass transfer rate and efficiency. Since the cross-sectional area of the second flow channels is smaller, when the working medium flows through the second flow channels, a higher flow rate and pressure are generated, an obvious pressure difference is formed between the first flow channels and the second flow channels, and the working medium in the first flow channels is promoted to permeate to the membrane electrode of the cell.

Description

Technical Field

[0001] This invention relates to the field of fuel cells, and in particular to a fuel cell electrode plate flow channel structure, a fuel cell bipolar plate, and a hydrogen fuel cell. Background Technology

[0002] As a highly efficient and environmentally friendly energy conversion device, fuel cells have shown great application potential in fields such as new energy vehicles and distributed power generation systems in recent years. Among them, bipolar plates, as one of the key components of fuel cells, not only undertake multiple functions such as gas distribution, current conduction, and structural support of the fuel cell stack, but their material selection and design directly affect the performance, cost, and reliability of fuel cells.

[0003] Currently, the most widely used bipolar plate materials for fuel cells include injection-molded graphite bipolar plates and flexible graphite bipolar plates. Graphite materials are widely used due to their good electrical conductivity, corrosion resistance, and certain high-temperature resistance. However, graphite bipolar plates have significant limitations: on the one hand, their thickness and weight are relatively large, which not only increases the overall volume and weight of the fuel cell stack, limiting the development of fuel cells towards lightweighting and miniaturization, but also increases transportation and installation costs; on the other hand, graphite materials have relatively low mechanical strength and are prone to cracking when subjected to external impacts, thus affecting the overall structural integrity and operational safety of the fuel cell stack, and in severe cases, may lead to battery failure.

[0004] Given the aforementioned shortcomings of graphite bipolar plates, the industry has begun exploring more ideal bipolar plate materials. Metal plates, due to their advantages such as light weight, small size, high strength, and good recyclability, are gradually becoming strong candidates to replace graphite bipolar plates. The application of metal bipolar plates can not only significantly reduce the weight and volume of fuel cell stacks and increase energy density, but also help promote cost reduction in fuel cell systems and the development of a circular economy, demonstrating a broader development prospect.

[0005] Furthermore, the flow channel design on the bipolar plates is crucial for optimizing fuel cell performance. Traditional flow channel designs mainly include straight-through channels and serpentine channels. Straight-through channels are simple to design and have low flow resistance, but their mass transfer effect is relatively limited, which may affect the reaction efficiency and performance output of the fuel cell. Although serpentine channels can improve mass transfer to some extent, their complex flow path increases flow resistance, and their application in large-size bipolar plate flow field designs is limited, which is not conducive to the large-scale application and optimization of fuel cells.

[0006] Therefore, developing efficient mass transfer channels on bipolar plates has become a key technological challenge for improving fuel cell performance, reducing costs, and promoting its commercialization. Summary of the Invention

[0007] In order to solve the technical problem of poor mass transfer effect of bipolar plate flow channels in the prior art, the present invention proposes a fuel cell electrode flow channel structure, a fuel cell bipolar plate, and a hydrogen fuel cell.

[0008] The technical solution adopted in this invention is:

[0009] This invention proposes a fuel cell electrode plate flow channel structure, wherein the battery electrode plate is provided with multiple first flow channels and at least one second flow channel. Multiple mass transfer chambers located on the battery electrode plate and having a cross-sectional area larger than the first flow channel are connected in series on the first flow channels. A second flow channel is arranged between two adjacent first flow channels, and the cross-sectional area of ​​the second flow channel is smaller than that of the first flow channel. After the working fluid is introduced into the first flow channel and the second flow channel, a pressure difference is formed, which promotes the permeation of the working fluid into the membrane electrode of the battery.

[0010] Furthermore, the first flow channel is elongated, and the multiple mass transfer chambers are spaced apart and arranged in a straight line on the first flow channel.

[0011] Furthermore, the second flow channel is divided into multiple first mass transfer sections and multiple second mass transfer sections with different cross-sections. The first mass transfer sections and the second mass transfer sections are arranged alternately, and the cross-sectional area of ​​the first mass transfer section is larger than that of the second mass transfer section.

[0012] Furthermore, the front side of the battery plate is recessed to form the first flow channel, the second flow channel, and the mass transfer chamber, while the back side of the battery plate forms a mesh-like third flow channel.

[0013] Furthermore, the mass transfer chamber is arc-shaped or rectangular.

[0014] Furthermore, the battery electrode plate is made of titanium alloy.

[0015] Furthermore, the battery plates are made of stainless steel.

[0016] A fuel cell bipolar plate includes two battery plates, wherein the battery plates include any of the fuel cell plate flow channel structures described in the present invention.

[0017] Furthermore, the two battery plates are arranged back to back.

[0018] Furthermore, the two battery plates are positioned directly opposite each other.

[0019] A hydrogen fuel cell, comprising the fuel cell bipolar plate.

[0020] Compared with existing technologies, this invention proposes a fuel cell electrode plate flow channel structure. Multiple first and second flow channels are arranged on the battery electrode plate, and multiple mass transfer chambers located on the battery electrode plate with a larger cross-sectional area than the first flow channel are connected in series on the first flow channel. The cross-sectional area of ​​the second flow channel is smaller than that of the first flow channel. The larger cross-sectional area of ​​the mass transfer chamber provides more space for the working fluid, allowing it to mix and diffuse better, thereby improving the mass transfer rate and efficiency. Due to the smaller cross-sectional area of ​​the second flow channel, a higher flow velocity and pressure are generated when the working fluid flows through it, creating a significant pressure difference with the first flow channel, which promotes the permeation of the working fluid in the first flow channel into the membrane electrode assembly (MEA) of the battery. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the front structure of the battery electrode plate in an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the back structure of the battery electrode plate in an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the battery bipolar plate structure in an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the battery bipolar plate structure in another embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the hydrogen fuel cell structure in an embodiment of the present invention;

[0027] 1. First flow channel; 11. Mass transfer chamber;

[0028] 2. Second flow channel;

[0029] 01. Battery plates;

[0030] 3. Third flow channel;

[0031] 4. Battery bipolar plates;

[0032] 5. Membrane electrode. Detailed Implementation

[0033] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0034] The principles and structure of the present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0035] As a highly efficient and environmentally friendly energy conversion device, fuel cells have shown great application potential in fields such as new energy vehicles and distributed power generation systems in recent years. Among them, bipolar plates, as one of the key components of fuel cells, not only undertake multiple functions such as gas distribution, current conduction, and structural support of the fuel cell stack, but their material selection and design directly affect the performance, cost, and reliability of fuel cells.

[0036] Currently, the most widely used bipolar plate materials for fuel cells include injection-molded graphite bipolar plates and flexible graphite bipolar plates. Graphite materials are widely used due to their good electrical conductivity, corrosion resistance, and certain high-temperature resistance. However, graphite bipolar plates have significant limitations: on the one hand, their thickness and weight are relatively large, which not only increases the overall volume and weight of the fuel cell stack, limiting the development of fuel cells towards lightweighting and miniaturization, but also increases transportation and installation costs; on the other hand, graphite materials have relatively low mechanical strength and are prone to cracking when subjected to external impacts, thus affecting the overall structural integrity and operational safety of the fuel cell stack, and in severe cases, may lead to battery failure.

[0037] Given the aforementioned shortcomings of graphite bipolar plates, the industry has begun exploring more ideal bipolar plate materials. Metal plates, due to their advantages such as light weight, small size, high strength, and good recyclability, are gradually becoming strong candidates to replace graphite bipolar plates. The application of metal bipolar plates can not only significantly reduce the weight and volume of fuel cell stacks and increase energy density, but also help promote cost reduction in fuel cell systems and the development of a circular economy, demonstrating a broader development prospect.

[0038] Furthermore, the flow channel design on the bipolar plates is crucial for optimizing fuel cell performance. Traditional flow channel designs mainly include straight-through channels and serpentine channels. Straight-through channels are simple to design and have low flow resistance, but their mass transfer effect is relatively limited, which may affect the reaction efficiency and performance output of the fuel cell. Although serpentine channels can improve mass transfer to some extent, their complex flow path increases flow resistance, and their application in large-size bipolar plate flow field designs is limited, which is not conducive to the large-scale application and optimization of fuel cells.

[0039] Therefore, developing efficient mass transfer channels on bipolar plates has become a key technological challenge for improving fuel cell performance, reducing costs, and promoting its commercialization.

[0040] like Figure 1-2 As shown, the present invention proposes a fuel cell electrode plate flow channel structure, wherein multiple first flow channels 1 and at least one second flow channel 2 are provided on the battery electrode plate 01. Multiple mass transfer chambers 11 located on the battery electrode plate and having a cross-sectional area larger than that of the first flow channel 1 are connected in series on the first flow channel 1. A second flow channel 2 is provided between two adjacent first flow channels 1, and the cross-sectional area of ​​the second flow channel 2 is smaller than that of the first flow channel 1. After the working fluid is introduced into the first flow channel 1 and the second flow channel 2, a pressure difference is formed due to the difference in their cross-sectional areas, which promotes the permeation of the working fluid into the membrane electrode 5 of the battery.

[0041] The battery electrode 01 has multiple first flow channels 1 and at least one second flow channel 2. The first flow channels 1 are responsible for uniformly distributing the working fluid (such as hydrogen or oxygen) to various areas of the battery electrode 01. The mass transfer chamber 11 is designed to provide a relatively spacious area to promote the residence and diffusion of the working fluid, increase the contact area between the working fluid and the membrane electrode 5 of the battery, and thus improve the reaction efficiency. A second flow channel 2 with a smaller cross-sectional area than the first flow channel 1 is provided between two adjacent first flow channels 1. Due to the smaller cross-sectional area of ​​the second flow channel 2, when the working fluid flows through it, a higher flow velocity and pressure are generated, forming a significant pressure difference with the first flow channel 1, which promotes the penetration of the working fluid into the membrane electrode 5 of the battery.

[0042] By setting up the mass transfer chamber 11 and the second flow channel 2 to form a pressure difference, the diffusion rate of the working fluid in the battery plate 01 and the contact area with the membrane electrode 5 are significantly improved, thereby enhancing the mass transfer efficiency of the fuel cell.

[0043] In a further embodiment, the first flow channel 1 is elongated, and multiple mass transfer chambers 11 are spaced apart and arranged in a straight line on the first flow channel 1. The multiple first flow channels 1 are arranged in parallel. The mass transfer chambers 11 at the same position of the multiple first flow channels 1 are on a straight line, and the straight line is perpendicular to the first flow channel 1.

[0044] By precisely controlling the arrangement and layout of the first flow channel 1 and the mass transfer chamber 11, this invention achieves a compact structure for the battery plate 01 while maintaining efficient mass transfer. This helps reduce the size and weight of the fuel cell, improving its flexibility and adaptability in various application scenarios.

[0045] In a further embodiment, the second flow channel 2 is divided into multiple first mass transfer sections and multiple second mass transfer sections, with the first and second mass transfer sections alternately arranged, and the cross-sectional area of ​​the first mass transfer section being larger than that of the second mass transfer section. The second mass transfer section is located between two adjacent first flow channels 1, and the first mass transfer section is located between the mass transfer chambers 11 of two adjacent first flow channels.

[0046] The staggered arrangement of the first and second mass transfer sections creates a more complex fluid flow path, which facilitates the uniform distribution and thorough mixing of the working fluid within the battery plate 01. The larger cross-sectional area of ​​the first mass transfer section provides more space for the working fluid to remain and diffuse, thereby increasing the contact area between the working fluid and the membrane electrode 5 and improving mass transfer efficiency. By precisely controlling the size and layout of the first and second mass transfer sections, the compact structure of the battery plate 01 can be achieved while maintaining high mass transfer efficiency. This design makes the fuel cell more flexible and adaptable in various application scenarios, meeting the needs of different fields. In summary, the staggered design of the second flow channel 2, comprising multiple first and second mass transfer sections, brings significant advantages to the fuel cell plate 01. This design not only enhances the mass transfer effect and optimizes fluid dynamics performance but also improves the overall performance and structural compactness of the fuel cell.

[0047] In a further embodiment, the mass transfer chamber 11 is arc-shaped or rectangular. In this embodiment, the mass transfer chamber 11 is circular. The shape of the mass transfer chamber 11 is not limited, as long as its cross-sectional area is larger than that of the first flow channel 1.

[0048] The larger cross-sectional area of ​​the mass transfer chamber 11 provides more space for the working fluid, allowing for better mixing and diffusion. This helps increase the contact area between the fluid and the electrode surface, thereby improving the mass transfer rate and efficiency. Different shapes (such as arc, rectangle, or circle) can be optimized according to specific application scenarios to maximize the contact area between the working fluid and the membrane electrode 5 of the fuel cell, while ensuring the uniformity and stability of fluid flow. The different shape designs of the mass transfer chamber 11 can be adjusted according to the overall layout and size requirements of the fuel cell stack, thereby enhancing the adaptability and flexibility of the structure.

[0049] Multiple circular mass transfer chambers 11 are provided on the first flow channel 1. The cross-sectional area of ​​the mass transfer chamber 11 on the three-dimensional coordinate YOZ parallel plane is always greater than the cross-sectional area of ​​the first flow channel 1. When the working fluid (hydrogen or oxygen) flows into the first flow channel 1 from one end at a velocity V0, its velocity becomes V1 when it passes through the mass transfer chamber 11 (V1 is the average velocity of the working fluid flowing in the mass transfer chamber 11). Since the volume of the working fluid increases when it flows into the mass transfer chamber 11, the pressure decreases, so the velocity V0 > V1. That is, the velocity of the working fluid decreases after it flows into the mass transfer chamber 11. Subsequently, the working fluid flows out of the mass transfer chamber 11 along the first flow channel 1 again. After flowing out, because the cross-sectional area decreases, the pressure increases, so the average velocity of the working fluid V2 here is greater than V1. The working fluid flows through the first flow channel 1 in this alternating pattern of fast and slow speeds, resulting in a more uniform flow and diffusion of the working fluid in the first flow channel 1 compared to a direct flow channel. The second flow channel 2 is adjacent to the first flow channel 1, and is slender with slight variations in cross-sectional area. Since the second flow channel 2 is much smaller than the first flow channel 1, the average flow velocity V3 of the working fluid inside the second flow channel 2 is much faster than that inside the first flow channel 1. This allows the working fluid to easily reach the end of the second flow channel 2, providing better working fluid for the reaction at the end. Furthermore, the difference in the flow velocity of the working fluid between the first flow channel 1 and the second flow channel 2 creates a pressure difference between them, promoting the penetration of the working fluid into the membrane electrode 5.

[0050] The relationship between the working fluid velocity and the cross-sectional area can be described by the continuity equation, v·A=Q. Here, v is the velocity, A is the cross-sectional area, and Q is the working fluid flow rate. This formula shows that when the flow rate is constant, the velocity is inversely proportional to the cross-sectional area; that is, when the cross-sectional area decreases, the velocity must increase to maintain a constant flow rate.

[0051] Preferably, the battery plate 01 is made of titanium alloy.

[0052] Preferably, the battery plate 01 is made of stainless steel.

[0053] Titanium alloys possess high strength and relatively low density, allowing them to reduce the overall weight of fuel cells while maintaining structural strength, thus improving energy density and driving range. Titanium alloys exhibit excellent resistance to various corrosive media, maintaining long-term stability and reliability in harsh operating environments (such as acidic or alkaline electrolytes). Furthermore, titanium alloys have good thermal conductivity, facilitating effective heat dissipation during fuel cell operation, preventing overheating, and enhancing system stability and safety.

[0054] Stainless steel is renowned for its high strength and excellent durability, enabling it to maintain structural integrity and stability during the long-term operation of fuel cells. Stainless steel is a widely used metallic material with abundant raw materials and mature processing technology, resulting in relatively low cost, which helps reduce the manufacturing cost of fuel cells.

[0055] In summary, titanium alloys and stainless steel are the preferred materials for fuel cell electrode plates 01, each possessing unique advantages. Titanium alloys, with their high strength, low density, excellent corrosion resistance, and good thermal conductivity, are ideal for high-performance fuel cells; while stainless steel, with its high strength, durability, cost-effectiveness, and good corrosion resistance, offers a more cost-effective solution while meeting basic performance requirements.

[0056] The front of the battery plate is recessed to form the first flow channel, the second flow channel and the mass transfer chamber, while the back of the battery plate forms a mesh-like third flow channel.

[0057] When the working fluid flows through the third channel 3, it flows to both sides and eventually merges in adjacent third channels 3, exhibiting a diffuse flow trend, making it most suitable for coolant flow. Since fuel cells release a large amount of heat during operation, and to ensure the fuel cell operates at a specific temperature, excellent thermal management is required. This type of channel, with its diffuse flow and no dead zones, provides extremely uniform coolant distribution, making it easy to adjust the fuel cell temperature to the appropriate reaction temperature and preventing localized overheating.

[0058] like Figure 3-4 As shown, the present invention also proposes a fuel cell bipolar plate 4, which includes two battery plates, and the battery plates adopt the fuel cell plate flow channel structure of the present invention.

[0059] In one embodiment, two battery plates 01 are arranged back to back, and multiple fourth flow channels are formed between the two battery plates 01.

[0060] In another embodiment, two battery plates 01 are arranged facing each other, and multiple fifth flow channels are formed between the two battery plates 01.

[0061] Two identical battery plates 01 are combined (back to back) to form a bipolar plate of the double plate three-chamber type (since this patent mainly focuses on the flow channel, the structure of other parts of the bipolar plate is not designed. The structure of other parts here refers to: hydrogen inlet and outlet, oxygen inlet and outlet, coolant inlet and outlet, sealing structure, inspection port structure, etc.).

[0062] like Figure 5As shown, this invention also proposes a hydrogen fuel cell, including fuel cell bipolar plates. Two fuel cell bipolar plates 4 sandwiching a membrane electrode 5 form a single cell. To construct a fuel cell stack with higher power, the fuel cell bipolar plates 4 and membrane electrode 5 can be alternately stacked to achieve the desired power. In reality, in addition to the bipolar plates and membrane electrode 5, auxiliary components such as seals, insulating plates, current collectors (or flow guides), end plates, and fasteners are generally required to complete the fuel cell stack (these are not considered the main inventive point and will not be described further here).

[0063] Compared with existing technologies, this invention proposes a fuel cell electrode plate 01, on which multiple first flow channels 1 and second flow channels 2 are arranged. Multiple mass transfer chambers 11, each with a larger cross-sectional area than the first flow channel 1, are connected in series on the first flow channel 1. The cross-sectional area of ​​the second flow channel 2 is smaller than that of the first flow channel 1. The larger cross-section of the mass transfer chamber 11 provides more space for the working fluid, allowing for better mixing and diffusion, thereby improving the mass transfer rate and efficiency. Due to the smaller cross-section of the second flow channel 2, a higher flow velocity and pressure are generated when the working fluid flows through it, creating a significant pressure difference with the first flow channel 1, which promotes the permeation of the working fluid in the first flow channel 1 into the membrane electrode 5 of the battery.

[0064] It should be noted that the terminology used above is for describing particular embodiments only and is not intended to limit the exemplary embodiments of the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form as well. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0065] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0066] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0067] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0068] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0069] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A fuel cell electrode flow channel structure, characterized in that, The battery electrode plate is provided with multiple first flow channels and at least one second flow channel. Multiple mass transfer chambers located on the battery electrode plate and with a cross-sectional area larger than the first flow channel are connected in series on the first flow channel. A second flow channel is provided between two adjacent first flow channels, and the cross-sectional area of ​​the second flow channel is smaller than the cross-sectional area of ​​the first flow channel. After the working fluid is introduced into the first flow channel and the second flow channel, a pressure difference is formed, which promotes the penetration of the working fluid into the membrane electrode of the battery.

2. The fuel cell electrode flow channel structure as described in claim 1, characterized in that, The first flow channel is elongated, and multiple mass transfer chambers are spaced apart and arranged in a straight line on the first flow channel.

3. The fuel cell electrode flow channel structure as described in claim 1, characterized in that, The second flow channel is divided into multiple first mass transfer sections and multiple second mass transfer sections with different cross-sections. The first mass transfer sections and the second mass transfer sections are arranged alternately, and the cross-sectional area of ​​the first mass transfer section is larger than that of the second mass transfer section.

4. The fuel cell electrode flow channel structure as described in claim 1, characterized in that, The front of the battery plate is recessed to form the first flow channel, the second flow channel and the mass transfer chamber, and the back of the battery plate forms a mesh-like third flow channel.

5. The fuel cell electrode flow channel structure as described in claim 1, characterized in that, The mass transfer chamber is arc-shaped or rectangular.

6. The fuel cell electrode flow channel structure as described in claim 1, characterized in that, The battery plates are made of titanium alloy or stainless steel.

7. A fuel cell bipolar plate, comprising two battery plates, characterized in that, The battery electrode plate includes the fuel cell electrode plate flow channel structure as described in any one of claims 1-6.

8. The fuel cell bipolar plate as described in claim 7, characterized in that, The two battery plates are arranged back to back.

9. The fuel cell bipolar plate as described in claim 7, characterized in that, The two battery plates are positioned directly opposite each other.

10. A hydrogen fuel cell, characterized in that, Includes the fuel cell bipolar plate as described in any one of claims 7-9.

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