Polar plate and fuel cell

Abstract

The application relates to a polar plate, which comprises a plate body, flow channel ridges arranged on the plate body at intervals along a first direction, two adjacent flow channel ridges and the plate body jointly defining a flow channel groove for providing a space for fluid flow, and flow disturbing members arranged in the flow channel groove at intervals along a second direction, the flow disturbing members being capable of disturbing the flow of the fluid, and the second direction intersecting the first direction. When the gas flows in the flow channel groove and passes through the flow disturbing members, the velocity and pressure of the gas will fluctuate, the steady flow changes into turbulent flow, the gas distribution in the battery is uniform, the mass transfer to the membrane electrode is accelerated, and the performance of the fuel cell is improved.

Description

Technical Field

[0001] This application relates to the field of fuel cells, and in particular to a plate and a fuel cell. Background Technology

[0002] Fuel cells are the main clean energy technology now and in the future, with advantages such as high energy density, low pollution, and long driving range. They are widely used in fields such as vehicle power and backup power.

[0003] In related technologies, fuel cells mainly consist of membrane electrode assemblies (MEAs) and bipolar plates. The bipolar plates provide gas flow channels, prevent hydrogen and oxygen from mixing in the cell chamber, and establish a current path between the series-connected anode and cathode. Three independent flow channels are formed between the two bipolar plates: an oxygen flow channel, a hydrogen flow channel, and a cooling water flow channel.

[0004] However, most flow channels are direct current channels, which have a small pressure drop and are prone to water blockage at the tail end, causing the fuel cell to "suffocate and die". The next most common are serpentine flow channels and alternating flow channels, which increase the pressure drop and make drainage easier, but these flow channels are prone to uneven gas distribution, affecting the transmission between gas and membrane electrode. Summary of the Invention

[0005] Therefore, it is necessary to provide an electrode plate and a fuel cell to address the above-mentioned technical problems, so as to make the gas distribution inside the battery uniform and improve the transmission effect between the gas and the membrane electrode.

[0006] This application provides an electrode plate, comprising: a plate body; flow channel ridges, which are spaced apart on the plate body along a first direction, with two adjacent flow channel ridges and the plate body jointly defining a flow channel groove, the flow channel groove being used to provide space for fluid flow; and a flow disturbance element, which is spaced apart in the flow channel groove along a second direction, the flow disturbance element being used to disturb the flow of fluid, the second direction intersecting the first direction.

[0007] When gas flows through the flow channel grooves and passes through the turbulence-inducing components, the gas velocity and pressure fluctuate, changing from steady-state flow to turbulent flow. This makes the gas distribution inside the battery more uniform, accelerates mass transfer to the membrane electrode, and improves the performance of the fuel cell.

[0008] In one embodiment, the turbulence-disrupting elements are spaced apart on the bottom wall of the flow channel groove along a second direction.

[0009] In one embodiment, the spoilers are arranged in multiple columns along a first direction, and the spoilers in adjacent columns are staggered along a second direction.

[0010] In one embodiment, the turbulence-disrupting elements are spaced apart on the sidewalls of the flow channel groove along a second direction.

[0011] In one embodiment, the spoilers are arranged in multiple columns along a third direction, and the spoilers in adjacent columns are staggered along a second direction; the first direction, the second direction, and the third direction are perpendicular to each other.

[0012] In one embodiment, the flow deflectors are staggered along the second direction on the two sidewalls of the flow channel groove.

[0013] In one embodiment, the turbulence element is constructed with a helical surface, the central axis of which intersects the flow direction of the fluid.

[0014] In one embodiment, the spoiler is configured as a semi-cylinder.

[0015] In one embodiment, the volume of the turbulence-disrupting element within the flow channel gradually increases in the direction of fluid flow within the flow channel.

[0016] Another aspect of this application provides a fuel cell, which includes the electrode plates as described above and a membrane electrode assembly disposed between the electrode plates. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the electrode plate in some embodiments of the present application, wherein the flow-disrupting element is disposed on the bottom wall of the flow channel groove.

[0018] Figure 2 This is a schematic diagram of an electrode plate in some embodiments of the present application, wherein a flow-disrupting element is disposed on the sidewall of the flow channel groove.

[0019] Figure 3 This is a schematic diagram of an electrode plate in some embodiments of the present application, wherein the flow-disrupting element is disposed on the bottom wall and side wall of the flow channel groove. Detailed Implementation

[0020] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0021] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and 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 of this application.

[0022] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0023] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0024] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0025] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0026] A fuel cell mainly consists of bipolar plates and membrane electrode assemblies (MEAs) sandwiched between them. The bipolar plates are a crucial component of the fuel cell, possessing the following functions and properties: separating the fuel from the oxidant; providing gas flow channels; preventing hydrogen and oxygen from mixing in the cell chambers; and, through careful design and processing, distributing the gas evenly to the MEAs for electrode reactions; establishing a current path between the series-connected anode and cathode to collect and conduct current, exhibiting high conductivity; and dissipating heat to maintain a uniform temperature field within the cell. The quality of the bipolar plates directly determines the output power and lifespan of the fuel cell stack.

[0027] The flow channel structure is a crucial component of the bipolar plate, determining factors such as power density and lifespan of the fuel cell. Optimizing the bipolar plate flow channel structure can enhance drainage capacity, reduce concentration losses, and thus improve the performance and efficiency of the fuel cell.

[0028] See Figures 1 to 3 , Figures 1 to 3 Schematic diagrams of electrode plates in some embodiments of this application are shown. In some embodiments, electrode plate 100 includes plate body 10, flow channel ridges 20, and flow-disrupting elements 30. Plate body 10 is used to support membrane electrode, and flow channels are designed and processed on plate body 10. Electrode plate 100 uniformly distributes fluid to the membrane electrode of the battery through the flow channels for electrochemical reaction. Optionally, electrode plate 100 is a metal electrode plate, graphite electrode plate, or composite material electrode plate. Flow channels are provided and processed on both sides of electrode plate 100 to form a bipolar plate.

[0029] The electrode plate 100 is provided with multiple flow channel ridges 20, which are spaced apart along the first direction S1 on the plate body 10. A flow channel groove 40 is formed between every two adjacent flow channel ridges 20, and the flow channel groove 40 is used for fluid flow. The flow channel groove 40 is configured as a fluid channel, which can be composed of multiple serpentine long and short flow channels, multiple parallel short flow channels, or multiple alternating complex flow channels. It should be noted that the fluid channel is not limited and can be one or a combination of parallel flow channels, serpentine flow channels, interdigitated flow channels, Z-shaped flow channels, or biomimetic flow channels. Optionally, the width of the flow channel groove 40 is 0.5mm-1.5mm, the depth of the flow channel groove 40 is 0.3mm-1.5mm, and the width of the flow channel ridge 20 is 0.5mm-1.5mm. Optionally, the cross-sectional shape of the flow channel groove 40 along its width direction is rectangular or square.

[0030] The flow disruptors 30 are spaced apart within the flow channel grooves 40 along a second direction S2 intersecting the first direction S1. The flow disruptors 30 can disturb the fluid flow. When gas flows through the flow disruptors 30, they make the gas velocity and pressure fluctuate more easily, changing the flow from steady state to turbulent state. This results in a more uniform gas distribution inside the fuel cell, accelerates mass transfer to the catalyst layer, and improves fuel cell performance. Specifically, the first direction S1 can be the width direction of the plate 10, and the second direction S2 can be the length direction of the plate 10.

[0031] Furthermore, the flow-deflecting element 30 is equipped with a helical surface, the axis of which intersects the flow direction of the fluid. This arrangement allows the fluid to flow over the helical surface, causing it to move in a curved path around the surface, thus enhancing the turbulence and making it easier and faster for the gas inside the fuel cell to distribute evenly. The helical surface also alters the flow pattern of the generated liquid water, ensuring that water generated inside the battery can be drained away promptly, preventing flooding of the membrane electrode assembly and avoiding the "suffocation" of the fuel cell.

[0032] In some embodiments, the flow disruptor 30 is configured as a semi-cylinder. The semi-cylindrical flow disruptor 30 is housed in the flow channel groove 40. The semi-cylindrical flow disruptor 30 includes two opposing end faces, an arcuate surface disposed between the two end faces, and a plane disposed between the two end faces. Specifically, the flow disruptor 30 is connected to the flow channel groove 40 via the plane. In this case, the contact area between the flow disruptor 30 and the flow channel groove 40 is relatively large, allowing the flow disruptor 30 to be stably connected to the flow channel groove 40, enabling the flow disruptor 30 to act on the fluid inside the fuel cell for a long time. When gas flows through the flow disruptor 30, the arcuate surface causes the gas to bypass the arcuate surface, thereby changing the steady-state flow state of the gas and making it more prone to turbulence. Optionally, the length or height of the semi-cylinder is 0.25mm-1.0mm, and the radius of the end face circle of the semi-cylinder is 0.1mm-1.0mm.

[0033] In some embodiments, the flow channel groove 40 includes a bottom wall disposed on the plate 10 and two side walls respectively disposed on two flow channel ridges 20. Baffles 30 are spaced apart on the plate 10 along a second direction S2, with the plane of the semi-cylindrical baffles 30 engaging with the bottom wall of the flow channel groove 40; baffles 30 are spaced apart on the flow channel ridges 20 along the second direction S2, with the plane of the semi-cylindrical baffles 30 engaging with the side walls of the flow channel groove 40; baffles 30 are spaced apart on the plate 10 and the flow channel ridges 20 along the second direction S2, with the plane of the semi-cylindrical baffles 30 engaging with both the bottom wall and the side walls of the flow channel groove 40. It can be understood that the positions of the baffles 30 are set as needed.

[0034] In some embodiments, when the semi-cylindrical baffle 30 is disposed on the bottom wall of the flow channel 40, the angle between the central axis of the semi-cylindrical baffle 30 and the bottom wall of the flow channel 40 can be 0°-90°; when the semi-cylindrical baffle 30 is disposed on the side wall of the flow channel 40, the angle between the central axis of the semi-cylindrical baffle 30 and the side wall of the flow channel 40 can also be 0°-90°. In other embodiments, when the baffle 30 is disposed on the bottom wall of the flow channel 40 and the angle between the central axis of the baffle 30 and the bottom wall of the flow channel 40 is 90°, the baffle 30 can be a cylinder; when the baffle 30 is disposed on the side wall of the flow channel 40 and the angle between the central axis of the baffle 30 and the side wall of the flow channel 40 is 90°, the baffle 30 can be a cylinder.

[0035] Furthermore, the flow disruptor 30 is configured as a semi-cylinder with a helical surface. Correspondingly, the arc surface is configured as a helical surface. The presence of the helical surface makes it easier for the gas flow state to fluctuate, changing the gas flow rate and pressure, making it easier for the gas inside the battery to be evenly distributed, and enhancing the mass transfer process between the gas and the gas diffusion layer such as the carbon paper layer.

[0036] Specifically, the spoiler 30 is equipped with a threaded semi-cylinder. The threaded structure is easy to machine, and the threaded surface can serve as a helical surface. It is understood that this application does not limit the type of thread; for example, the thread profile may include rectangular threads, triangular threads, trapezoidal threads, and sawtooth threads, the thread direction may be right-hand or left-hand, and the number of helical lines forming the thread may be single-start or multi-start. Optionally, the pitch of the semi-cylinder is 0.05mm-0.35mm.

[0037] In some embodiments, the flow-disrupting elements 30 are equidistantly distributed in the flow channel groove 40 along the second direction S2. In one embodiment, the bottom wall of the flow channel groove 40 is divided into multiple first equal segments along the second direction S2, and the flow-disrupting elements 30 are disposed on the boundary lines between two adjacent first equal segments of the bottom wall of the flow channel groove 40. For example, the bottom wall of the flow channel groove 40 can be divided into two, three, five, and seven equal segments along the second direction S2, and correspondingly, the flow-disrupting elements 30 are equidistantly disposed at the two, three, five, and seven equal segments of the plate 10 along the second direction S2. In another embodiment, the sidewall of each flow channel groove 40 is divided into multiple second equal segments along the second direction S2, and the flow-disrupting elements 30 are disposed on the boundary lines between two adjacent second equal segments. For example, the sidewall of each flow channel groove 40 can be divided into two, three, five, and seven equal parts along the second direction S2. Correspondingly, the flow disturbance 30 is equally spaced along the second direction S2 at the two, three, five, and seven equal parts of the sidewall of the flow channel groove 40.

[0038] In feasible embodiments, some of the flow-disrupting components 30 are equidistantly arranged at the second, third, fifth, and seventh division points of the plate 10 along the second direction S2, and some of the flow-disrupting components 30 are equidistantly arranged at the second, third, fifth, and seventh division points of the flow channel ridge 20 along the second direction S2.

[0039] The equidistant arrangement of the flow-dispersing elements 30 allows them to uniformly agitate the velocity and pressure of the gas flow, thereby improving the overall agitation of the gas interior by the flow channel and facilitating the placement of the flow-dispersing elements 30 within the flow channel groove 40. It is understood that the above is merely illustrative and should not be construed as limiting the scope of this application. For example, at least some of the flow-dispersing elements 30 on the bottom wall of the flow channel groove 40 may not be located on the boundary lines of two adjacent first equal segments, and at least some of the flow-dispersing elements 30 on the sidewalls of the flow channel groove 40 may not be located on the boundary lines of two adjacent second equal segments, as long as they can induce fluctuations in the velocity and pressure of the airflow.

[0040] In some embodiments, the boundary lines of the first equal segments of the bottom wall of the flow channel 40 and the boundary lines of the second equal segments of the side wall of the flow channel 40 are not in the same plane. This arrangement allows the flow disturbance 30 disposed on the bottom wall of the flow channel 40 to better cooperate with the flow disturbance 30 disposed on the flow channel ridge 20, causing fluctuations in the velocity and pressure of the gas in the flow channel 40, changing the steady-state flow to turbulent flow, thereby promoting internal gas disturbance, accelerating mass transfer to the membrane electrode, and thus reducing concentration loss of the fuel cell and improving the efficiency of the fuel cell. In other embodiments, the boundary lines of the first equal segments of the plate 10 and the boundary lines of the second equal segments of the flow channel ridge 20 may also intersect in the same plane.

[0041] In some embodiments, the flow-disrupting elements 30 are arranged in at least two rows along the first direction S1 on the bottom wall of the flow channel trench 40, and adjacent rows of flow-disrupting elements 30 are staggered along the second direction S2. Specifically, the flow-disrupting elements 30 are arranged in two rows on the bottom wall of the flow channel trench 40, and the two rows of flow-disrupting elements 30 are staggered along the first direction S1. This arrangement facilitates the cooperation of the flow-disrupting elements 30 on the bottom wall of the flow channel trench 40, so that the gas flowing through the bottom wall of the flow channel trench 40 can be disturbed by the flow-disrupting elements 30, which is beneficial to the disturbance of the gas inside the battery.

[0042] In some embodiments, the flow-disrupting elements 30 are arranged in at least two rows along a third direction S3 on the sidewall of the flow channel trench 40, and adjacent rows of flow-disrupting elements 30 are staggered along a second direction S2; the first direction S1, the second direction S2, and the third direction S3 are perpendicular to each other. Specifically, the third direction S3 can be the height direction of the flow channel ridge 20. This arrangement facilitates the cooperation of the flow-disrupting elements 30 on the flow channel ridge 20, so that the gas flowing through different regions of the flow channel ridge 20 can be disturbed by the flow-disrupting elements 30, which is beneficial to the disturbance of the gas inside the battery.

[0043] In some embodiments, the flow-disrupting elements 30 are staggered along the second direction S2 on the sidewalls of the corresponding two flow channel trenches 40. For example, three flow-disrupting elements 30 are provided on each of the two sidewalls of the flow channel trenches 40, and are all located on six equally divided boundary lines on the sidewalls of the flow channel trenches 40. Specifically, the three flow-disrupting elements 30 on one sidewall are located on the first, third, and fifth boundary lines, and the two flow-disrupting elements 30 on the other sidewall are located on the second and fourth boundary lines. This arrangement facilitates the interaction of the flow-disrupting elements 30 on the two sidewalls of the flow channel trenches 40, ensuring that the gas flowing through the two sidewalls of the flow channel trenches 40 is disturbed by the flow-disrupting elements 30, which is beneficial for the disturbance of the gas inside the battery.

[0044] In some embodiments, the volume of the baffles 30 within the flow channel 40 gradually increases in the direction of fluid flow within the flow channel 40. As gas flows through each baffle 30, the gas velocity and pressure change differently, which facilitates gas diffusion towards the membrane electrode assembly, thereby reducing concentration losses in the fuel cell and improving fuel cell efficiency. In other embodiments, all baffles 30 may have the same volume.

[0045] Typically, changing the dimensions of the flow deflector 30 can alter its volume. Specifically, in this embodiment, the radius of the semi-cylindrical flow deflector 30 remains constant, while its height gradually increases in the flow direction of the fluid within the flow channel 40; alternatively, the height of the semi-cylindrical flow deflector 30 remains constant, while its radius gradually increases in the flow direction of the fluid within the flow channel 40.

[0046] In some embodiments, the baffle 30 can be disposed in the flow channel groove 40 by pressing, welding, or bonding. This method ensures the baffle 30 is fixedly connected to the flow channel groove 40, guaranteeing its installation stability and enabling long-term use. Furthermore, this method prevents the baffle 30 from damaging the plate body 10 of the electrode 100, and it is applicable to the flow channel groove 40 of different electrode plates 100, enhancing the versatility of the baffle 30.

[0047] In some embodiments, see Figure 1 The flow channels of the electrode plate 100 are parallel channels, each 300 mm long. The flow channel groove 40 has a depth of 1 mm and a width of 1.5 mm. Five threaded semi-cylindrical flow-disrupting elements 30 are arranged at six equal division points on the bottom wall of the flow channel groove 40. These five flow-disrupting elements 30 are arranged in two rows on the plate 10. One row has three flow-disrupting elements 30, located at the first, third, and fifth dividing lines of the plate 10, respectively. The other row has two flow-disrupting elements 30, located at the second and fourth dividing lines of the plate 10, respectively. All five flow-disrupting elements 30 are identical in size, with an end face radius of 0.35 mm, a length of 0.9 mm, and a 0° angle between the central axis of the flow-disrupting element 30 and the bottom wall of the flow channel groove 40. When the gas flows through the turbulence-inducing element 30, both the gas velocity and pressure change, which facilitates the diffusion of the gas to the membrane electrode, thereby reducing the concentration loss of the fuel cell and improving the efficiency of the fuel cell.

[0048] In some embodiments, see Figure 2The flow channels of the electrode plate 100 are parallel channels, with a single channel length of 300 mm. The depth of the flow channel groove 40 is 1 mm, and the width of the flow channel groove 40 is 1.5 mm. Three threaded semi-cylindrical flow-disrupting elements 30 are arranged at four equal division points on the sidewall of the flow channel groove 40, and these three flow-disrupting elements 30 are parallel to each other and staggered along the gas flow direction. The dimensions of the three flow-disrupting elements 30 gradually increase along the second direction S2. The end face radius of the flow-disrupting element 30 is 0.45 mm, and the length of the flow-disrupting element 30 is 0.3 mm-0.6 mm. Adjacent flow-disrupting elements 30 are not at the same division point in the third direction S3, i.e., they are staggered. The angle between the central axis of the flow-disrupting element 30 and the sidewall of the flow channel groove 40 is 0°. When the gas flows through the flow-disrupting elements 30, both the gas velocity and pressure change, which is beneficial for gas diffusion to the membrane electrode, thereby reducing the concentration loss of the fuel cell and improving the efficiency of the fuel cell.

[0049] In some embodiments, see Figure 3 The flow channel of the electrode plate 100 is a parallel flow channel with a length of 300 mm for a single flow channel. The depth of the flow channel groove 40 is 1 mm and the width of the flow channel groove 40 is 1.5 mm. Five threaded semi-cylindrical baffles 30 are provided at six equal points on the bottom wall of the flow channel groove 40. The five baffles 30 are the same size, with an end face radius of 0.3 mm and a length of 0.8 mm. The angle between the central axis of the baffle 30 and the bottom wall of the flow channel groove 40 is 0°. Five threaded semi-cylindrical baffles 30 are provided on the sidewall of the flow channel 40. Three threaded semi-cylindrical baffles 30 are provided at four equal division points of one sidewall, and the three baffles 30 are the same size. Two threaded semi-cylindrical baffles 30 are provided at four equal division points of the other sidewall. All baffles 30 are the same size, with an end face radius of 0.25 mm and a length of 0.55 mm. The central axis of the baffles 30 forms a 0° angle with both the bottom wall and the sidewall of the flow channel 40. On the bottom and sidewalls of the flow channel 40, adjacent baffles 30 are not located at the same division point in the second direction S2, meaning that all baffles 30 are staggered. When gas flows through the semi-cylindrical structure, both the gas velocity and pressure change, which facilitates the diffusion of the reactant gas towards the membrane electrode, thereby reducing the concentration loss of the fuel cell and improving the efficiency of the fuel cell.

[0050] As part of the same concept of this application, a fuel cell is also provided, including electrode plates 100 and membrane electrode assembly disposed between the electrode plates 100, wherein the electrode plates 100 are as described in the above embodiments.

[0051] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0052] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An electrode plate, characterized in that, The electrode plate includes: plate body; Flow channel ridges, spaced apart along a first direction on the plate, with adjacent flow channel ridges and the plate defining a flow channel groove, the flow channel groove providing space for fluid flow; and A flow disruptor is disposed at intervals in the flow channel groove along a second direction. The flow disruptor is used to disrupt the flow of the fluid. The second direction intersects the first direction. The flow-deflecting component has a helical surface, and the central axis of the helical surface intersects with the flow direction of the fluid. The agitator is configured as a semi-cylinder, which includes two opposite end faces, an arc surface between the two end faces, and a plane between the two end faces. The agitator is connected to the flow channel groove through the plane, and the arc surface is configured as a spiral surface.

2. The electrode plate according to claim 1, characterized in that, The flow-disrupting elements are spaced apart on the bottom wall of the flow channel groove along the second direction.

3. The electrode plate according to claim 2, characterized in that, The spoilers are arranged in multiple columns along the first direction, and the spoilers in adjacent columns are staggered along the second direction.

4. The electrode plate according to claim 1, characterized in that, The flow-disrupting elements are spaced apart on the sidewalls of the flow channel groove along the second direction.

5. The electrode plate according to claim 4, characterized in that, The spoilers are arranged in multiple columns along a third direction, and the spoilers in adjacent columns are staggered along the second direction; the first direction, the second direction, and the third direction are perpendicular to each other.

6. The electrode plate according to claim 4, characterized in that, The flow-disrupting elements are staggered along the second direction on the two sidewalls of the flow channel groove.

7. The electrode plate according to claim 1, characterized in that, The volume of the flow-disrupting element within the flow channel groove gradually increases in the direction of fluid flow within the flow channel groove.

8. A fuel cell, characterized in that, The fuel cell includes the electrode plates as described in any one of claims 1-7 and the membrane electrode assembly disposed between the electrode plates.

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