Spiral flow field and polar plate applying spiral flow field

Abstract

The utility model discloses a spiral flow field and a polar plate applying the spiral flow field, the spiral flow field comprises a plurality of flow channel ridges protruding out of the plate surface of the polar plate, all the flow channel ridges are spirally arranged from inside to outside or all the flow channel ridges are spirally arranged from outside to inside, and a flow channel is formed between every two adjacent flow channel ridges; when the runner ridges are spirally arranged from inside to outside, circular-arc-shaped air runner inlets are formed in the polar plates in the initial end position areas of all the runner ridges, and circular-arc-shaped air runner outlets are formed in the polar plates in the tail end position areas of all the runner ridges; when the runner ridges are spirally arranged from outside to inside, circular-arc-shaped hydrogen runner inlets are formed in the polar plates at the starting ends of all the runner ridges, and circular-arc-shaped hydrogen runner outlets for discharging hydrogen are formed in the polar plates at the tail ends of all the runner ridges. The utility model has the advantages that the pressure difference between the inlet and the outlet of the runner can be effectively reduced, the diffusion rate of gas is greatly improved, and the stability and the service life of a galvanic pile are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen fuel cells, and particularly relates to bipolar plates. Background Art

[0002] A hydrogen fuel cell is an electrochemical device that converts the chemical energy of hydrogen into electrical energy. Due to its clean and pollution-free characteristics, it has been developing rapidly in recent years. The key components in a hydrogen fuel cell include: electrodes, proton exchange membranes, and bipolar plates. Flow channels, also known as flow fields, are processed on the surface of the bipolar plate. Therefore, the bipolar plate is also called a flow field plate, and its functions are: separating oxidants and reducers, collecting current, guiding the uniform distribution of reaction gases, heat conduction, draining water, etc. The distribution structure of the flow field on the bipolar plate will greatly affect the distribution of reaction gases, heat conduction performance, and drainage speed, etc., thus having an important impact on the battery performance and battery operation efficiency.

[0003] The structure of the flow field on the traditional flow field plate includes: several linear or zigzag flow channels opened on the surface of the flow field plate, and the flow channels extend from one end of the surface of the flow field plate to the other end of the surface of the flow field plate. When the plates with this flow field structure are assembled into a stack, the periphery of the surface outside the flow field is fixed.

[0004] The traditional plates have the following defects: during the reaction process of the stack, the stack expands due to heat, and the center of the plate is prone to expansion due to uneven pressure and uneven heat, thus easily leading to the sealing failure of the entire stack.

[0005] With the continuous high-speed development of hydrogen fuel cells, higher and higher requirements are put forward for the plates and the flow field. Therefore, in order to overcome the existing technical problems of the current plates and further improve the gas diffusion rate and reduce the pressure difference between the gas inlet and outlet, the applicant has developed a spiral flow field structure and plates applying this spiral flow field. Summary of the Utility Model

[0006] The technical problem to be solved by the utility model is: to provide a spiral flow field and plates applying the spiral flow field. The spiral flow field can enable gases to be quickly distributed into each flow channel, effectively reduce the pressure difference between the inlet and the outlet, improve the reaction efficiency, and the plates can be more reliably connected when assembled into a stack, thereby greatly improving the service life of the stack.

[0007] To solve the above problems, the technical solution adopted by the present utility model is as follows: a spiral flow field, including several flow channel ridges protruding from the plate surface of the plate electrode. All the flow channel ridges are arranged at intervals in a spiral shape. All the flow channel ridges are spirally arranged from the inside out or all the flow channel ridges are spirally arranged from the outside in. The gap between every two adjacent flow channel ridges forms a flow channel, and there are at least two flow channel ridges. When the flow channel ridges are spirally arranged from the inside out, the spiral flow field formed by the flow channels is an air flow field. An arc-shaped air flow channel inlet for air to enter is provided on the plate electrode in the starting end position area of all the flow channel ridges, and an arc-shaped air flow channel outlet for air to discharge is provided on the plate electrode in the ending end position area of all the flow channel ridges. When the flow channel ridges are spirally arranged from the outside in, the spiral flow field formed by the flow channels is a hydrogen flow field. An arc-shaped hydrogen flow channel inlet for hydrogen to enter is provided on the plate electrode in the starting end position area of all the flow channel ridges, and an arc-shaped hydrogen flow channel outlet for hydrogen to discharge is provided on the plate electrode in the ending end position area of all the flow channel ridges.

[0008] The purpose of setting multiple flow channel ridges is to form a multi-head spiral flow channel, so as to quickly disperse the gas at the flow channel inlet and reduce the pressure difference between the inlet and the outlet. The above-mentioned arc-shaped air flow channel inlet or hydrogen flow channel inlet can better quickly guide the gas to each flow channel inlet, and the arc-shaped air flow channel outlet or hydrogen flow channel outlet can enable the gas at each flow channel outlet to quickly converge.

[0009] Further, in the aforementioned spiral flow field, each flow channel ridge is arranged in an Archimedean spiral shape.

[0010] Further, in the aforementioned spiral flow field, four flow channel ridges are provided.

[0011] Even further, in the aforementioned spiral flow field, the widths and depths of all the flow channels are the same. The width of the flow channel is 0.8 - 1.2 mm, and the depth of the flow channel is 0.4 - 0.7 mm. The width and depth of the flow channel can be appropriately adjusted according to actual needs.

[0012] Even further, in the aforementioned spiral flow field, the width of the flow channel ridge is 0.8 - 1.2 mm. The width of the flow channel ridge can be appropriately adjusted on the premise of ensuring the strength of the flow channel ridge.

[0013] Further, in the aforementioned spiral flow field, when the flow channel ridges are spirally arranged from the inside out, the starting ends of all the flow channel ridges are staggeredly arranged in the area of the arc-shaped air flow channel inlet, and the ending ends of all the flow channel ridges are also staggeredly arranged in the area of the arc-shaped air flow channel outlet. When the flow channel ridges are spirally arranged from the outside in, the starting ends of all the flow channel ridges are staggeredly arranged in the area of the arc-shaped hydrogen flow channel inlet, and the ending ends of all the flow channel ridges are also staggeredly arranged in the area of the arc-shaped hydrogen flow channel outlet.

[0014] Furthermore, in the aforementioned spiral flow field, when the flow channel ridges are arranged spirally from the inside outwards, several starting-end auxiliary air flow channel ridge segments which are arranged at intervals and used for separating airflows and guiding the airflows towards the air flow channel inlet are arranged in the area of the starting-end position of the flow channel ridges. The starting-end auxiliary air flow channel ridge segments and the flow channel ridges outside them are arranged at the same spiral intervals. In the area of the end position of the flow channel ridges, several end auxiliary air flow channel ridge segments which are arranged at intervals and used for separating airflows and guiding the airflows towards the air flow channel outlet are arranged. The end auxiliary air flow channel ridge segments and the flow channel ridges inside them are arranged at the same spiral intervals. When the flow channel ridges are arranged spirally from the outside inwards, several starting-end auxiliary hydrogen flow channel ridge segments which are arranged at intervals and used for separating airflows and guiding the airflows towards the hydrogen flow channel inlet are arranged in the area of the starting-end position of the flow channel ridges. The starting-end auxiliary hydrogen flow channel ridge segments and the flow channel ridges inside them are arranged in the same spiral pattern. In the area of the end position of the flow channel ridges, several end auxiliary hydrogen flow channel ridge segments which are arranged at intervals and used for separating airflows and guiding the airflows towards the hydrogen flow channel outlet are arranged. The end auxiliary hydrogen flow channel ridge segments and the flow channel ridges outside them are arranged in the same spiral pattern.

[0015] The electrode plate applying the spiral flow field includes the above-mentioned spiral flow field.

[0016] Further, in the aforementioned electrode plate applying the spiral flow field, an installation hole for fixing the electrode plate when assembling into a fuel cell stack is opened on the electrode plate in the middle of the spiral flow field.

[0017] Furthermore, in the aforementioned electrode plate applying the spiral flow field, when the flow channel ridges are arranged spirally from the inside outwards, the said electrode plate is a cathode plate. A sector-shaped electrode plate air input hole is opened on the electrode plate between the installation hole and the air flow channel inlet. A sector-shaped electrode plate hydrogen output hole is also arranged on the electrode plate outside the installation hole. The electrode plate air input hole and the electrode plate hydrogen output hole are symmetrically arranged with respect to the central axis of the electrode plate. An electrode plate air output hole is arranged on the electrode plate outside the air flow channel outlet;

[0018] When the flow channel ridges are arranged spirally from the outside inwards, the said electrode plate is an anode plate. A sector-shaped electrode plate hydrogen output hole is opened on the electrode plate between the installation hole and the hydrogen flow channel outlet. A sector-shaped electrode plate air input hole is also arranged on the electrode plate outside the installation hole. The electrode plate hydrogen output hole and the electrode plate air input hole are symmetrically arranged with respect to the central axis of the electrode plate. An electrode plate hydrogen input hole is arranged on the electrode plate outside the hydrogen flow channel inlet.

[0019] Furthermore, for the plate with a spiral flow field described above, two annular first sealant injection grooves and second sealant injection grooves for sealing are provided outside the mounting holes inside all the flow channel ridges. The first sealant injection groove is located between the mounting hole, the air input hole of the plate and the hydrogen output hole of the plate; the second sealant injection groove is located outside the air input hole and the hydrogen output hole of the plate; the first sealant injection groove and the second sealant injection groove are connected through a connecting sealant groove, and the connecting sealant groove is provided on the plate between the air input hole and the hydrogen output hole of the plate.

[0020] The advantages of the present utility model are as follows: A spiral flow field structure with multi-head spiral channels is adopted, which is applicable to cathode plates and anode plates. The multi-head spiral channels can enable gas to quickly enter the channels from multiple channel inlets and be evenly distributed in the flow field of the plate. This flow field structure of the multi-head spiral channels is simple in form, can effectively reduce the pressure difference between the channel inlet and the channel outlet, greatly improve the gas diffusion rate, and thus greatly improve the reaction efficiency and stability of the stack. At the same time, the spiral flow field structure has a tendency to eject gas along the spiral direction, which can not only accelerate the gas diffusion, but also generate disturbance to the gas, thereby increasing the contact between the gas and the diffusion layer, greatly improving the reaction efficiency, and further greatly improving the working efficiency of the hydrogen fuel cell stack. For the plate with the solenoid-shaped flow field structure of the multi-head spiral channels, a mounting hole is provided in the center of the flow field. The mounting hole is used for the fixed connection of the plate when the plates are assembled into a stack, which enables the center of the plate to be restricted, thereby effectively preventing the situation that the middle of the plate expands and bulges due to uneven heating during the operation of the stack, and greatly extending the service life of the stack. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of the spiral flow field and the pole applying the spiral flow field described in Embodiment 1.

[0022] Figure 2 It is a schematic structural diagram of the spiral flow field and the pole applying the spiral flow field described in Embodiment 2. Detailed Embodiments

[0023] The present utility model will be further described in detail below with reference to the drawings and preferred embodiments.

[0024] Embodiment 1: As Figure 1As shown, the spiral flow field includes several flow channel ridges protruding from the plate surface of plate 1. All the flow channel ridges are spiral, are spaced from each other, and are spirally arranged from the inside out. Each flow channel ridge is arranged in an Archimedean spiral. A flow channel 10 is formed between every two adjacent flow channel ridges. In this embodiment, an example of setting four flow channel ridges is used for illustration. The four flow channel ridges are, from the inside to the outside, the first flow channel ridge 71, the second flow channel ridge 72, the third flow channel ridge 73, and the fourth flow channel ridge 74 in sequence.

[0025] The spiral flow field described is an air flow field. An arc-shaped air flow channel inlet 2 for air to enter is provided on plate 1 in the position area of the starting ends of all the flow channel ridges, and an arc-shaped air flow channel outlet 3 for air to be discharged is provided on plate 1 in the position area of the ending ends of all the flow channel ridges.

[0026] In this embodiment, the widths and depths of all the flow channels 10 are the same; the width of the flow channel 10 is 1 mm, and the depth of the flow channel is 0.55 mm. The width of the flow channel ridge is 1 mm.

[0027] In order to enable air to be quickly distributed into each flow channel, the starting ends of all the flow channel ridges are staggeredly arranged in the position area of the arc-shaped air flow channel inlet 2. In order to enable the air in different flow channels to quickly and evenly enter the air flow channel outlet 3, in this embodiment, the ending ends of all the flow channel ridges are also staggeredly arranged in the position area of the arc-shaped air flow channel outlet 3. The air flow channel inlet 2 being set as arc-shaped also further facilitates the dispersion of air into multiple flow channels 10, and the air flow channel outlet 3 being set as arc-shaped further facilitates the quick outflow of the air in multiple flow channels 10.

[0028] In addition, in order to well guide the air flow entering the air flow field, in this embodiment, several starting-end auxiliary air flow channel ridge segments 4 that are spaced from each other and are used to separate the air flow and guide the air flow towards the air flow channel inlet 2 are provided in the starting-end area of all the flow channel ridges. In this embodiment, there are two starting-end auxiliary air flow channel ridge segments 4 that are spaced from each other, one long and one short. The two starting-end auxiliary air flow channel ridge segments 4 are arranged in the same spiral shape as the flow channel ridge outside them. Several ending-end auxiliary air flow channel ridge segments 5 that are spaced from each other and are used to separate the air flow and guide the air flow towards the air flow channel outlet 3 are provided in the position area of the ending ends of all the flow channel ridges. In this embodiment, there are three ending-end auxiliary air flow channel ridge segments 5 that are spaced from each other, and the ending-end auxiliary air flow channel ridge segments 5 are arranged in the same spiral shape as the flow channel ridge inside them.

[0029] For the plate with the spiral flow field, the plate surface of the plate is provided with the spiral flow field with the above structure, and the plate described is a cathode plate. In this embodiment, an installation hole 11 for fixing plate 1 when assembling a fuel cell stack is provided on plate 1 in the middle of the spiral flow field.

[0030] On the plate 1 between the mounting hole 11 and the air flow channel inlet 2, a fan-shaped plate air input hole 21 is provided. On the plate 1 outside the mounting hole 11, a fan-shaped plate hydrogen output hole 6 is also provided. The plate air input hole 21 and the plate hydrogen output hole 6 are symmetrically arranged with respect to the longitudinal central axis OO of the plate 1. On the plate 1 outside the air flow channel outlet 3, a plate air output hole 31 is provided. After the plates are assembled into a stack, air enters from the plate air input hole 21 into the air flow channel inlet 2, then enters from the air flow channel inlet 2 into the inlets of each flow channel 10, moves under the guidance of the flow channel 10, and the remaining air converges from the flow channel outlets to the air flow channel outlet 3, and finally discharges from the plate air output hole 31 out of the stack.

[0031] In this embodiment, two annular first sealant grooves 12 and second sealant grooves 13 for sealing are provided outside the mounting hole 11 inside all the flow channel ridges. The first sealant groove 12 is located between the mounting hole 11, the plate air input hole 21 and the plate hydrogen output hole 6; the second sealant groove 13 is located outside the plate air input hole 21 and the plate hydrogen output hole 6; the first sealant groove 12 and the second sealant groove 13 are connected through a connecting glue groove 14, and the connecting glue groove 14 is provided on the plate 1 between the plate air input hole 21 and the plate hydrogen output hole 6.

[0032] Example 2: As Figure 2 shown, a spiral flow field includes a number of flow channel ridges protruding from the plate surface of the plate 1. All the flow channel ridges are spiral and are arranged at intervals. All the flow channel ridges are spirally arranged from the outside to the inside, and each flow channel ridge is arranged in an Archimedean spiral shape. In this embodiment, an example of setting four flow channel ridges is used for illustration. The four flow channel ridges are, from the outside to the inside, the first flow channel ridge 71, the second flow channel ridge 72, the third flow channel ridge 73, and the fourth flow channel ridge 74.

[0033] The spiral flow field is a hydrogen flow field. On the plate 1 in the starting end position area of all the flow channel ridges, an arc-shaped hydrogen flow channel inlet 2 for hydrogen to enter is provided. On the plate 1 in the ending end position area of all the flow channel ridges, an arc-shaped hydrogen flow channel outlet 3 for air to discharge is provided.

[0034] In this embodiment, the widths and depths of all the flow channels 10 are the same; the width of the flow channel 10 is 1 mm, and the depth of the flow channel is 0.55 mm. The width of the flow channel ridge is 1 mm.

[0035] In order to enable hydrogen to be quickly and evenly distributed to each flow channel, the starting ends of all the flow channel ridges are staggered in the position area of the arc-shaped air flow channel inlet 2. In order to enable hydrogen in different flow channels to quickly enter the hydrogen flow channel outlet 3, in this embodiment, the ending ends of all the flow channel ridges are also staggered in the position area of the arc-shaped hydrogen flow channel outlet 3.

[0036] In addition, in order to well guide the air flow entering the hydrogen gas flow field, in this embodiment, on the plate surface of the plate 1 in the starting end region of all the flow channel ridges, a number of starting end auxiliary hydrogen gas flow channel ridge segments 4 arranged at intervals are provided for separating the air flow and guiding the air flow towards the hydrogen gas flow channel inlet 2. In this embodiment, there are three starting end auxiliary hydrogen gas flow channel ridge segments 4 arranged at intervals. The three starting end auxiliary hydrogen gas flow channel ridge segments 4 are arranged in the same spiral shape as the flow channel ridges inside them. At the position of the end region of all the flow channel ridges, a number of end auxiliary hydrogen gas flow channel ridge segments 5 arranged at intervals for separating the air flow and guiding the air flow towards the hydrogen gas flow channel outlet 3 are also provided. In this embodiment, there are two end auxiliary hydrogen gas flow channel ridge segments 5 arranged at intervals, and the end auxiliary hydrogen gas flow channel ridge segments 5 are arranged in the same spiral shape as the flow channel ridges outside them.

[0037] For a spiral flow field and an electrode using the spiral flow field, a spiral flow field with the above structure is adopted, and the plate is an anode plate. In this embodiment, on the plate 1 in the center of the spiral flow field, an installation hole 11 for fixing the plate 1 when assembling into a fuel cell stack is provided.

[0038] On the plate 1 between the installation hole 11 and the hydrogen gas flow channel outlet 3, a fan-shaped plate hydrogen gas output hole 31 is provided. On the plate 1 outside the installation hole 11, a fan-shaped plate air input hole 6 is also provided. The plate hydrogen gas output hole 31 and the plate air input hole 6 are arranged symmetrically about the longitudinal central axis OO of the plate 1. On the plate 1 outside the hydrogen gas flow channel inlet 2, a plate hydrogen gas input hole 21 is provided.

[0039] After the plates are assembled into a fuel cell stack, hydrogen enters from the plate hydrogen gas input hole 21 to the hydrogen gas flow channel inlet 2, then enters from the hydrogen gas flow channel inlet 2 into the inlets of each flow channel 10, moves under the guidance of the flow channel, and the remaining hydrogen converges from the flow channel outlet to the hydrogen gas flow channel outlet 3, and finally is discharged from the fuel cell stack through the plate hydrogen gas output hole 31.

[0040] In this embodiment, outside the installation hole 11 inside all the flow channel ridges, two annular first sealant injection grooves 12 and second sealant injection grooves 13 for sealing are provided. The first sealant injection groove 12 is located between the installation hole 11, the plate air input hole 6 and the plate hydrogen gas output hole 31; the second sealant injection groove 13 is located outside the plate air input hole 6 and the plate hydrogen gas output hole 31; the first sealant injection groove 12 and the second sealant injection groove 13 are connected through a connecting glue groove 14, and the connecting glue groove 14 is provided on the plate 1 between the plate air input hole 6 and the plate hydrogen gas output hole 31. The setting of the first sealant injection groove 12 and the second sealant injection groove 13 can effectively ensure the sealing between adjacent plate assemblies when assembling into a fuel cell stack.

[0041] The above two embodiments provide a spiral flow field structure with multi-head spiral channels, which is applicable to cathode plates and anode plates. The multi-head spiral channels enable gas to quickly enter the channels from multiple channel inlets and be rapidly dispersed and evenly distributed in the flow field of the plates. This spiral flow field structure with multi-head spiral channels has a simple form, can effectively reduce the pressure difference between the channel inlet and the channel outlet, and greatly improve the gas diffusion rate, thereby significantly improving the reaction efficiency and stability of the stack. At the same time, the spiral flow channel structure has a tendency to eject the gas along the spiral direction, which can not only accelerate the gas diffusion but also generate perturbation to the gas, thereby increasing the contact between the gas and the diffusion layer, greatly improving the reaction efficiency, and further significantly improving the working efficiency of the hydrogen fuel cell stack. For the plate with the spiral flow field structure of the multi-head spiral channels, a mounting hole 11 is provided at the center of the flow field. The mounting hole 11 is used for the fixed connection of the plate when the plates are assembled into a stack, which enables the center of the plate to be restricted, thereby effectively preventing the situation that the middle of the plate expands and bulges due to uneven heating during the operation of the stack, and can greatly extend the service life of the stack.

Claims

1. A spiral flow field, comprising a plurality of flow channel ridges protruding from the plate surface, characterized in that: All flow channel ridges are arranged in a spiral shape at intervals, all flow channel ridges are arranged in a spiral from the inside to the outside or all flow channel ridges are arranged in a spiral from the outside to the inside, the gap between each two adjacent flow channel ridges forms a flow channel, and there are at least two flow channel ridges; when the flow channel ridges are arranged in a spiral from the inside to the outside, the spiral flow field formed by the flow channel is an air flow field, and the pole plates in the starting end position area of ​​all flow channel ridges are provided with arc-shaped air flow channel inlets for air to enter, and the pole plates in the end position area of ​​all flow channel ridges are provided with arc-shaped air flow channel outlets for air to discharge; when the flow channel ridges are arranged in a spiral from the outside to the inside, the spiral flow field formed by the flow channel is a hydrogen flow field, and the pole plates in the starting end position area of ​​all flow channel ridges are provided with arc-shaped hydrogen flow channel inlets for hydrogen to enter, and the pole plates in the end position area of ​​all flow channel ridges are provided with arc-shaped hydrogen flow channel outlets for hydrogen to discharge.

2. The spiral flow field according to claim 1, characterized in that: Each flow channel ridge is arranged in the shape of an Archimedean spiral.

3. The spiral flow field according to claim 1 or 2, characterized in that: The flow channel ridges are arranged in four intervals.

4. The spiral flow field according to claim 1 or 2, characterized in that: All flow channels have the same width and depth; the width of the flow channel is 0.8 to 1.2 mm, and the depth of the flow channel is 0.4 to 0.7 mm.

5. The spiral flow field according to claim 4, characterized in that: The width of the flow channel ridge is 0.8 to 1.2 mm.

6. The spiral flow field according to claim 1 or 2, characterized in that: When the flow channel ridges are arranged in a spiral from the inside to the outside, the starting ends of all the flow channel ridges are staggered in the circular arc-shaped air flow channel inlet position area, and the ends of all the flow channel ridges are also staggered in the circular arc-shaped air flow channel outlet position area; when the flow channel ridges are arranged in a spiral from the outside to the inside, the starting ends of all the flow channel ridges are staggered in the circular arc-shaped hydrogen flow channel inlet position area, and the ends of all the flow channel ridges are also staggered in the circular arc-shaped hydrogen flow channel outlet position area.

7. The spiral flow field according to claim 6, characterized in that: When the flow channel ridge is spirally arranged from the inside to the outside, the flow channel ridge starting end position area is provided with a number of starting end auxiliary air flow channel ridge segments for separating the airflow and guiding the airflow to the air flow channel inlet, the starting end auxiliary air flow channel ridge segment is arranged in the same spiral interval as the flow channel ridge on its outer side, and the flow channel ridge terminal position area is provided with a number of terminal auxiliary air flow channel ridge segments for separating the airflow and guiding the airflow to the air flow channel outlet, the terminal auxiliary air flow channel ridge segment is arranged in the same spiral interval as the flow channel ridge on its inner side; when the flow channel ridge is spirally arranged from the outside to the inside, the flow channel ridge starting end position area is provided with a number of starting end auxiliary hydrogen flow channel ridge segments for separating the airflow and guiding the airflow to the hydrogen flow channel inlet, the starting end auxiliary hydrogen flow channel ridge segment is arranged in the same spiral arrangement as the flow channel ridge on its inner side, and the flow channel ridge terminal position area is provided with a number of terminal auxiliary hydrogen flow channel ridge segments for separating the airflow and guiding the airflow to the hydrogen flow channel outlet, the terminal auxiliary hydrogen flow channel ridge segment is arranged in the same spiral arrangement as the flow channel ridge on its outer side.

8. The plate using the spiral flow field is characterized by: A spiral flow field comprising any one of claims 1 to 7.

9. The electrode plate using a spiral flow field according to claim 8, characterized in that: A mounting hole for fixing the plate when assembling into a battery stack is provided on the plate in the middle of the spiral flow field.

10. The electrode plate using a spiral flow field according to claim 9, characterized in that: When the flow channel ridge is spirally arranged from the inside to the outside, the electrode plate is a cathode plate, a fan-shaped electrode plate air input hole is provided on the electrode plate between the mounting hole and the air flow channel inlet, a fan-shaped electrode plate hydrogen output hole is also provided on the electrode plate outside the mounting hole, the electrode plate air input hole and the electrode plate hydrogen output hole are arranged mirror-symmetrically about the longitudinal center axis of the electrode plate, and an electrode plate air output hole is provided on the electrode plate outside the air flow channel outlet; When the flow channel ridge is spirally arranged from outside to inside, the electrode plate is an anode plate, a fan-shaped electrode plate hydrogen output hole is provided on the electrode plate between the mounting hole and the hydrogen flow channel outlet, a fan-shaped electrode plate air input hole is also provided on the electrode plate outside the mounting hole, the electrode plate hydrogen output hole and the electrode plate air input hole are mirror-symmetrically arranged about the longitudinal center axis of the electrode plate, and a electrode plate hydrogen input hole is provided on the electrode plate outside the hydrogen flow channel inlet.

11. The electrode plate using a spiral flow field according to claim 10, characterized in that: Two annular first glue injection grooves and second glue injection grooves for sealing are arranged outside the mounting holes inside all flow channel ridges. The first glue injection groove is located between the mounting hole and the plate air input hole and the plate hydrogen output hole; the second glue injection groove is located outside the plate air input hole and the plate hydrogen output hole; the first glue injection groove and the second glue injection groove are connected through a connecting glue groove, and the connecting glue groove is arranged on the plate between the plate air input hole and the plate hydrogen output hole.

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