Stamping type electrolytic cell polar plate and small chamber flow field system

Abstract

The utility model relates to the technical field of electrolyte hydrogen, in particular to a ram-type electrolytic cell polar plate and a cell flow field system. The free surface of the stamping type electrolytic cell polar plate is an unstamped part in the stamping type electrolytic cell polar plate; the upper stamping surface is connected with one end of the free surface, and the upper stamping surface is an upward stamping part in the stamping type electrolytic bath pole plate; the lower stamping surface is connected with the other end of the free surface, and the upper stamping surface is a downward stamping part in the stamping type electrolytic cell polar plate; the upper opposite top surface is arranged on the top surface of the upper stamping surface; the lower opposite top surface is arranged on the bottom surface of the lower stamping surface; the upper stamping faces, the free faces and the lower stamping faces are sequentially connected. On the premise that the electrolytic current density of the cell is improved, the influence of a complex flow field of the flow field supporting layer on electrolyte flowing is reduced, the heat exchange efficiency between the electrolyte and an electrolytic cell polar plate is enhanced, meanwhile, primary separation of gas-liquid two-phase flow in the cell is achieved, and the flow field distribution of the whole system is uniform and efficient.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrolyte hydrogen technical field especially, it is a kind of stamping electrolytic cell polar plate and chamber flow field system. BACKGROUND

[0002] In the electrolytic hydrogen production, electrolytic cell polar plate and diaphragm, electrode and other key components are composed of electrolytic chamber, electrolytic cell polar plate is divided into stamping and non-stamping polar plate, can be matched with corresponding support piece to form the internal flow field of chamber. There is non-stamping polar plate matched with metal support net to form the internal flow field of chamber in current technical route, and there is also stamping polar plate to independently form the internal flow field of chamber.

[0003] Non-stamping polar plate matched with metal support net improves the contact area between main polar plate and electrode to some extent, to improve electrolytic gas production capacity. The complex flow field formed by the interlaced metal wires of support net can make the kinetic energy loss of electrolyte be huge, influence electrolyte flow speed in chamber, lead to electrolytic cell temperature control to increase the output power of corresponding water chiller and circulating pump;But electrolytic gas flow speed is less affected by flow field, and the speed difference is conducive to the separation of gas and liquid in chamber. The flow field system can improve electrolytic efficiency to some extent, but the improvement effect is limited due to the limitation factors of complex flow field.

[0004] Stamping polar plate has certain shape variability according to stamping die design, matched with electrode and diaphragm to form electrolytic chamber, and the flow field is relatively simple, electrolyte flows smoothly, and tank temperature control is relatively accurate, with smaller load on temperature control auxiliary equipment. But the contact area between electrode and main polar plate is restricted by existing stamping shape during electrolysis, and the contact area is relatively small compared with the above flow field system, the mass transfer resistance is larger, and the gas production efficiency is restricted. UTILITY MODEL CONTENTS

[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a stamping electrolytic cell polar plate and chamber flow field system, which can ensure that the electrolytic gas does not accumulate to affect the electrolytic reaction of electrolyte, and the structure system can further improve the electrolytic tank gas production efficiency and energy consumption reduction effect.

[0006] To achieve the above-mentioned purpose and other related purposes, the utility model provides a stamping electrolytic cell polar plate, which comprises:

[0007] Free surface, which is not stamped in the stamping electrolytic cell polar plate;

[0008] Upper stamping surface, which is connected with one end of the free surface, and the upper stamping surface is upwardly stamped in the stamping electrolytic cell polar plate;

[0009] Lower stamping surface, which is connected with the other end of the free surface, and the upper stamping surface is downwardly stamped in the stamping electrolytic cell polar plate.

[0010] upper counter top surface, which is arranged on the top surface of the upper stamping surface;

[0011] lower counter top surface, which is arranged on the bottom surface of the lower stamping surface;

[0012] The upper stamping surface, the free surface and the lower stamping surface are sequentially connected.

[0013] In an embodiment of the utility model, the stamping electrolytic cell pole plate is an alkaline electrolytic cell pole plate stamping structure.

[0014] In an embodiment of the utility model, the projection of the upper stamping surface, the upper counter top surface, the lower stamping surface and the lower counter top surface on the horizontal plane is circular, the projection of the upper stamping surface and the upper counter top surface is a small circle, the projection of the lower stamping surface and the lower counter top surface is a large circle, the diameter of the small circle is greater than or equal to 9mm, the diameter of the large circle is greater than or equal to 15mm, and the stamping distance between the small circle and the large circle is equal to the diameter of the large circle.

[0015] In an embodiment of the utility model, the distance between the upper stamping surface and the upper counter top surface and the distance between the lower stamping surface and the lower counter top surface are equal to the thickness dimension of the stamping electrolytic cell pole plate.

[0016] In an embodiment of the utility model, the distance between the upper counter top surface and the free surface and the distance between the lower counter top surface and the free surface are less than or equal to 3mm.

[0017] In an embodiment of the utility model, the upper counter top surface and the free surface are connected through an inclined angle curved surface, the lower counter top surface and the free surface are connected through an inclined angle curved surface, and the inclined angle of the inclined angle curved surface ranges from 0 to 90 degrees.

[0018] The utility model also provides a small chamber flow field system, which comprises the stamping electrolytic cell pole plate, and further comprises:

[0019] A flow field support layer is arranged between the stamping electrolytic cell pole plate and the electrode and directly contacts the stamping electrolytic cell pole plate and the electrode.

[0020] In an embodiment of the utility model, the electrode comprises:

[0021] A cathode side electrode, the bottom of which contacts the diaphragm, and the top of which contacts the flow field support layer;

[0022] An anode side electrode, the top of which is arranged with an electrolyte fluid space between the diaphragm, and the bottom of which contacts the flow field support layer.

[0023] In one embodiment of this utility model, the electrolyte fluid space is further disposed between the flow field support layer and the stamped electrolytic cell electrode plate.

[0024] In one embodiment of this utility model, the flow field support layer adopts a nickel-based electrode, a metal support mesh, and a foamed nickel-based electrode.

[0025] As described above, the stamped electrolytic cell electrode plate and small chamber flow field system of this utility model have the following beneficial effects:

[0026] (1) The stamped electrolytic cell electrode plate and small chamber flow field system of this utility model optimizes the stamped structure of the electrolytic cell electrode plate. At the same time, the anode and cathode inside the small chamber, together with the flow field support layer, electrodes, diaphragms and other key components, form a new electrolytic cell flow field system. Under the premise of increasing the electrolytic current density in the small chamber, the influence of the complex flow field of the flow field support layer on the electrolyte flow is reduced, the heat exchange efficiency between the electrolyte and the electrolytic cell electrode plate is enhanced, and the initial separation of the gas-liquid two-phase flow inside the small chamber is achieved, so that the flow field distribution of the entire system is uniform and efficient.

[0027] (2) The stamped electrolytic cell electrode plate and small chamber flow field system of this utility model can greatly improve the current conductivity between the electrode plate and the electrode, reduce the mass transfer resistance inside the small chamber, improve the electrolysis gas production efficiency, and at the same time, the design leaves sufficient space for electrolyte flow, ensuring the initial separation effect between gas and liquid while ensuring the thermal conductivity of electrolyte. Attached Figure Description

[0028] Figure 1 This is a cross-sectional view of a stamped electrolytic cell electrode plate provided in one embodiment of this application.

[0029] Figure 2 This is a cross-sectional view of a stamped electrolytic cell electrode plate provided for another embodiment of this application.

[0030] Figure 3 This is a top view of a stamped electrolytic cell electrode plate provided in an embodiment of this application.

[0031] Figure 4 This is a schematic diagram of a small-cell flow field system provided in an embodiment of this application.

[0032] Component designation explanation

[0033] 1. Free side

[0034] 2. Upper stamping surface

[0035] 3. Lower stamping surface

[0036] 4. Top surface

[0037] 5. Lower face to top face

[0038] 6 flow field support layer

[0039] 7 electrode

[0040] 8 separator

[0041] 9 electrolyte fluid space

[0042] 10 transition face

[0043] 11 gasket

[0044] 100 stamped electrolytic cell plate DETAILED DESCRIPTION

[0045] Other advantages and / or effects of the present disclosure can be easily understood by those skilled in the art from the disclosure of the present specification. The present disclosure can also be implemented or applied in other different specific embodiments, and the details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present disclosure. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0046] It should be noted that the drawings provided in the following embodiments only schematically illustrate the basic concept of the present disclosure, and only the components related to the present disclosure are shown in the drawings, not the number, shape and size of the components when actually implemented. The shapes, numbers and proportions of the components when actually implemented can be arbitrarily changed, and the layout pattern of the components can also be more complex.

[0047] Terms such as first or second can be used to describe various components, but these components are not limited by the above terms. The above terms are used to distinguish one component from another component, for example, a first component can be referred to as a second component, and likewise, a second component can be referred to as a first component without departing from the scope of the concept according to the present disclosure.

[0048] In addition, "connected / coupled" means that one component is directly electrically connected to another component or indirectly electrically connected through another component. The singular form can include the plural form as long as it is not explicitly stated in the sentence. In addition, "comprising / including" or "comprising / including" used in the present specification means that one or more components, steps, operations and elements are present or added. The specific structure or function description of the example of the embodiment of the concept disclosed in the present specification is only exemplified to describe the example of the embodiment according to the concept, and the example of the embodiment according to the concept can be implemented in various forms, but these descriptions are not limited to the example of the embodiment described in the present specification.

[0049] According to the concept, various modifications and changes can be applied to the examples of the embodiments so that the examples of the embodiments illustrated in the drawings and described in the specification will not limit the embodiments according to the concept but include all changes, equivalents or alternatives included in the spirit and technical scope of the present disclosure.

[0050] It should be understood that when an element is described as "coupled" or "connected" to another element, it can be directly coupled or connected to the other element, or it can be indirectly coupled or connected to the other element through a third element. On the contrary, it should be understood that when an element is described as being "directly connected" or "directly coupled" to another element, no other element is interposed therebetween. Other expressions describing the relationship between components (i.e., "between" and "directly between" or "adjacent" and "directly adjacent") should be interpreted in the same manner.

[0051] The terms used in the present specification are merely used to describe specific examples of the embodiments and are not intended to limit the present disclosure. The singular forms are intended to include the plural forms as well, unless the context clearly indicates otherwise. In the present specification, it should be understood that the terms "include" or "have" indicate that there are features, numbers, steps, operations, components, parts or combinations thereof described in the specification, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0052] If not defined otherwise, all terms used herein, including technical terms or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. If there is a conflict between the definitions in the present specification and the meanings of terms in common usage, the definitions in the present specification are intended to be controlling. If not clearly defined in the present specification, terms defined in commonly used dictionaries are to be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art, and not be interpreted in an idealized or overly formal sense.

[0053] Descriptions of well-known components and processing techniques can be omitted so as not to unnecessarily obscure the embodiments of the present disclosure.

[0054] Throughout the specification, the same drawing reference numerals and symbols are applied to the same elements throughout the specification. Accordingly, even if a drawing reference numeral is not mentioned or described with reference to one drawing, it can be mentioned or described with reference to another drawing. Furthermore, even if a drawing reference numeral is not shown in one drawing, it can be mentioned or described with reference to another drawing.

[0055] In addition, the logic levels of signals can be different from or opposite to the logic levels described. For example, a signal described as having a logic "high" level can alternatively have a logic "low" level, and a signal described as having a logic "low" level can alternatively have a logic "high" level.

[0056] The embodiments of the present disclosure will be described in detail below with reference to the drawings. However, those skilled in the art can understand that, in the embodiments of the present disclosure, many technical details are presented in order to enable the reader to better understand the present disclosure. However, the technical solutions claimed by the present disclosure can be implemented even without these technical details and various changes and modifications based on the following embodiments.

[0057] Please refer to Figure 1 , Figure 1 A cross-sectional structure diagram of a stamping type electrolytic cell plate is provided for an embodiment of the present application. It includes an upper stamping surface 2, a lower stamping surface 3, an upper counter surface 4, a lower counter surface 5, and a free surface 1. The stamping structure of the plate is optimized by stamping and counter-surfacing, which greatly improves the contact area of the plate with the support net and the electrode under the premise that the stamping cold working form remains unchanged. And it is displayed from two cross-sectional directions. In the plan view X, Y direction of the plate, the upper stamping surface 2 and the lower stamping surface 3 of the stamping type electrolytic cell plate 100 are arranged alternately, and at the same time, the upper stamping surface 2 and the lower stamping surface 3 are tangent to each other. In the 45° direction of the plan view, the stamping direction of the plate structure remains consistent, and at the same time, there is a non-deformed area (free surface) between adjacent stamping areas. The counter surface and the free surface are connected by an inclined angle surface, and the inclined angle range is 0-90°, leaving a liquid flow climbing angle. The distance between the upper stamping surface 2, the lower stamping surface 3 and the upper counter surface 4, the lower counter surface 5 is equal to the thickness size of the plate. The thickness limiting design is carried out during the stamping process to ensure that the stamping area will not be excessively stamped, resulting in uneven stress distribution of the plate.

[0058] Please refer to Figure 2 , Figure 3 , Figure 2 A cross-sectional structure diagram of a stamping type electrolytic cell plate is provided for another embodiment of the present application. Figure 3 A plan view structure diagram of a stamping type electrolytic cell plate is provided for an embodiment of the present application. The utility model provides a stamping type electrolytic cell plate 100, including upper stamping surface 2, lower stamping surface 3, upper counter surface 4, lower counter surface 5 and free surface 1, free surface 1 is the non-stamping part in the stamping type electrolytic cell plate 100, upper stamping surface 2 is connected with one end of the free surface 1, and the upper stamping surface 2 is the upward stamping part in the stamping type electrolytic cell plate 100, lower stamping surface 3 is connected with the other end of the free surface 1, and the upper stamping surface 2 is the downward stamping part in the stamping type electrolytic cell plate 100, upper counter surface 4 is arranged on the top surface of the upper stamping surface 2, lower counter surface 5 is arranged on the bottom surface of the lower stamping surface 3, and a plurality of upper stamping surfaces 2, free surfaces 1 and lower stamping surfaces 3 are sequentially connected.

[0059] Specifically, the stamping type electrolytic cell plate 100 is a stamping structure of an alkaline electrolytic cell plate.

[0060] In one embodiment of the utility model, the stamping structure of the polar plate is optimized through stamping-against top form, the contact area of the polar plate, the supporting net and the electrode is improved under the premise of unchanged stamping cold working form.

[0061] In one embodiment of the utility model, the upper stamping surface 2 and the lower stamping surface 3 can also be connected through the transition surface 10.

[0062] Specifically, the projection of the upper stamping surface 2, the upper top-against surface 4, the lower stamping surface 3 and the lower top-against surface 5 on the horizontal plane is circular, the projection of the upper stamping surface 2 and the upper top-against surface 4 is a small circle, the projection of the lower stamping surface 3 and the lower top-against surface 5 is a large circle, the diameter of the small circle is greater than or equal to 9mm, the diameter of the large circle is greater than or equal to 15mm, and the stamping interval between the small circle and the large circle is equal to the diameter of the large circle.

[0063] Specifically, the interval between the upper stamping surface 2 and the upper top-against surface 4 and the interval between the lower stamping surface 3 and the lower top-against surface 5 are equal to the thickness dimension of the stamping type electrolytic cell polar plate 100.

[0064] Specifically, the distance between the upper top-against surface 4 and the free surface 1 is less than or equal to 3mm, and the distance between the lower top-against surface 5 and the free surface 1 is less than or equal to 3mm.

[0065] Specifically, the upper top-against surface 4 and the free surface 1 are connected through an inclined angle curved surface, the lower top-against surface 5 and the free surface 1 are connected through an inclined angle curved surface, and the inclined angle of the inclined angle curved surface ranges from 0 to 90 degrees.

[0066] In one embodiment of the utility model, the polar plate structure is in a large and small concentric circle structure under the perspective of the top view, the large circles are tangent arranged in the X and Y axis directions, and the stamping directions are consistent in the 45-degree inclined direction.

[0067] In one embodiment of the utility model, the interval between the upper stamping surface 2 and the upper top-against surface 4 and the interval between the lower stamping surface 3 and the lower top-against surface 5 are equal to the thickness dimension of the stamping type electrolytic cell polar plate 100, the thickness limiting design is carried out during the stamping process, it is ensured that the stamping area will not be excessively stamped, the polar plate stress distribution is uniform, and the design defects of the polar plate itself are avoided.

[0068] In one embodiment of the utility model, the distance between the upper top-against surface 4 and the free surface 1 is less than or equal to 3mm, the distance between the lower top-against surface 5 and the free surface 1 is less than or equal to 3mm, the top-against surface and the free surface are connected through a smooth curved surface, the deformation range of a single stamping unit is small, and the polar plate stamping processing yield is increased.

[0069] In an embodiment of the utility model, the lower pair top surface 5 and the free surface 1 are connected through the inclined angle curved surface, and the inclined angle of the inclined angle curved surface ranges from 0 to 90 degrees. Because of the fluid flow assumption: the near wall surface speed is 0, the flow angle can separate the gas and liquid flow areas, and it is beneficial to the initial separation of electrolyte and electrolysis generated gas.

[0070] In Figure 2 , the polar plate structure is a size concentric circle structure, and the large circle is tangent arranged in the X and Y axis directions, the punching direction is consistent in the 45-degree direction, and the Figure 1 , the punching direction is consistent. The upper and lower punching surfaces 2 and 3 are circular, the small circle diameter is greater than or equal to 9 mm, the large circle diameter is greater than or equal to 15 mm, the adjacent punching spacing in the X and Y axes is equal to the large circle diameter, and the Figure 1 , the upper and lower punching surfaces 2 and 3 are replaced. The distance between the upper and lower pair top surfaces 4 and 5 and the free surface 1 is less than or equal to 3 mm, the pair top surface and the free surface are connected through a smooth curved surface, and the deformation range of a single punching unit is small.

[0071] Please refer to Figure 4 , Figure 4 , a small chamber flow field system provided by the embodiment of the application. The utility model also provides a small chamber flow field system, which comprises the punching type electrolytic cell polar plate 100, and the small chamber flow field system further comprises a flow field support layer 6 which is arranged between the punching type electrolytic cell polar plate and an electrode 7 and directly contacts the punching type electrolytic cell polar plate and the electrode 7.

[0072] Specifically, the electrode 7 comprises a cathode side electrode and an anode side electrode, the bottom of the cathode side electrode contacts a diaphragm 8, and the top of the cathode side electrode contacts the flow field support layer 6; an electrolyte fluid space 9 is arranged between the top of the anode side electrode and the diaphragm 8, and the bottom of the anode side electrode contacts the flow field support layer 6.

[0073] Specifically, the electrolyte fluid space 9 is also arranged between the flow field support layer 6 and the punching type electrolytic cell polar plate.

[0074] Specifically, the flow field support layer 6 adopts a nickel-based electrode, a metal support net or a foamed nickel-based electrode.

[0075] In an embodiment of the utility model, the flow field support layer 6 is arranged between the punching type electrolytic cell polar plate 100 and the electrode 7 and directly contacts the two, wherein the nickel-based electrode, the metal support net and the foamed nickel-based electrode can all be used as the flow field support layer 6, and specifically, the metal support net is selected as the flow field support layer 6, and the following description is made by taking the metal support net instead of the flow field support layer 6.

[0076] In an embodiment of the utility model, the stamping electrolytic cell pole plate 100 cooperates with the metal support net to contact the electrolytic electrode 7, the system can greatly improve the contact area between the stamping electrolytic cell pole plate 100 and the electrode 7, realizes the zero-spacing contact between the electrode 7, the support net and the stamping electrolytic cell pole plate 100, and reduces the current conduction loss in the cell.

[0077] In an embodiment of the utility model, the cathode side electrode and the diaphragm 8 of the electrolytic cell are in zero-spacing contact, the gasket 11 inner ring surface fluid space exists between the anode side electrode and the diaphragm 8, the cathode side electrode does not directly contact the diaphragm 8, and the spacing is equal to the thickness of the insulating gasket 11.

[0078] In an embodiment of the utility model, in the X, Y axis direction of the pole plate top view, the upper stamping surface 2 and the upper opposite top surface 4 directly contact the metal support net and the electrode, in the 45 ° direction of the inclined angle, the stamping direction of the stamping electrolytic cell pole plate 100 is consistent, wherein the lower stamping surface 3 and the lower opposite top surface 5 are arranged in groups, and the lower stamping surface 3, the lower opposite top surface 5 and the metal support layer have a gap.

[0079] In an embodiment of the utility model, the gap between the stamping electrolytic cell pole plate 100 and the metal support layer is used for normal flow of electrolyte, ensures that the electrolyte fully contacts the surface of the stamping pole plate, improves the heat exchange between the electrolyte and the metal pole plate, and reduces the influence of the complex flow field of the metal support layer on the smoothness of the electrolyte flow.

[0080] In an embodiment of the utility model, the gas generated by the electrolytic cell can flow through the metal support net, is less affected by the complex flow field of the metal support net, and flows close to the surface of the pole plate under the influence of the flow field of the metal support net, and the flow field system can realize the primary separation between the electrolyte and the electrolysis generated gas.

[0081] In Figure 4 , the cell flow field system comprises a stamping electrolytic cell pole plate 100, a flow field support layer 6, an electrode 7 and a diaphragm 8, wherein the flow field support layer 6 is between the stamping electrolytic cell pole plate 100 and the electrode 7 and directly contacts both, wherein the nickel-based electrode, the metal support net, the foamed nickel-based electrode and the like can be used as the flow field support layer 6, preferably, the metal support net is selected as the flow field support layer 6. The stamping electrolytic cell pole plate 100 cooperates with the metal support net to contact the electrolytic electrode, the system can greatly improve the contact area between the electrode and the stamping electrolytic cell pole plate 100, realizes the zero-spacing contact of the stamping electrolytic cell pole plate 100, the support net and the electrode structure, and reduces the current conduction loss in the cell. The cathode side electrode of the electrolytic cell and the diaphragm 8 are in zero-spacing contact, the gasket inner ring surface fluid space exists between the anode side electrode and the diaphragm 8, the anode side electrode does not directly contact the diaphragm 8, and the spacing is equal to the thickness of the insulating gasket.

[0082] In the X, Y axis direction of the plate top view, the upper punching surface 2 and the upper counter top surface 4 are in direct contact with the metal support net and the electrode; in the 45° direction, the new plate punching direction is consistent, wherein the lower punching surface 3 and the lower counter top surface 5 are arranged in groups, and the lower punching surface 3 and the lower counter top surface 5 have a gap with the metal support layer. The gap between the punched electrolytic cell plate 100 and the metal support layer is used for normal flow of electrolyte, ensures that the electrolyte is in full contact with the surface of the punched plate, improves the heat exchange between the electrolyte and the metal plate, and reduces the influence of the complex flow field of the metal support layer on the smoothness of the electrolyte flow. The structure system flows in two-phase flow, and the electrolysis chamber generates gas which can flow through the metal support net, is less affected by the complex flow field of the metal support net, and is greatly affected by the flow field of the metal support net, flows close to the surface of the plate, can realize the primary separation between the electrolyte and the electrolysis generated gas, realizes the uniform distribution of the cell current, and the cell structure operates stably.

[0083] In summary, the punched electrolytic cell plate and the cell flow field system of the utility model, optimize the punching structure form of the electrolytic cell plate, at the same time, the cell internal cathode and anode cooperate with the flow field support layer, electrode, diaphragm and other key components to form a new electrolytic cell flow field system, realize the electrolysis current density of the cell under the premise of improving the cell, reduce the influence of the complex flow field of the flow field support layer on the electrolyte flow, enhance the heat exchange efficiency between the electrolyte and the electrolytic cell plate, and realize the primary separation of the gas-liquid two-phase flow in the cell, so that the whole system flow field is uniformly distributed and efficient.

[0084] The above embodiments only exemplarily illustrate the principle and effect of the utility model, and are not used to limit the utility model. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.

Claims

1. A stamped electrolytic cell pole plate, characterized by, The application relates to a stamping type electrolytic cell plate, which comprises the following parts: a free surface (1) which is an un-stamped part of the stamping type electrolytic cell plate; an upper stamping surface (2) which is connected with one end of the free surface (1) and is an upwardly stamped part of the stamping type electrolytic cell plate; a lower stamping surface (3) which is connected with the other end of the free surface (1) and is a downwardly stamped part of the stamping type electrolytic cell plate; an upper counter surface (4) which is arranged on the top surface of the upper stamping surface (2); and a lower counter surface (5) which is arranged on the bottom surface of the lower stamping surface (3); wherein the upper stamping surface (2), the free surface (1) and the lower stamping surface (3) are sequentially connected. The stamping type electrolytic cell plate is a stamping structure of an alkaline electrolytic cell plate. The projections of the upper stamping surface (2), the upper counter surface (4), the lower stamping surface (3) and the lower counter surface (5) on a horizontal plane are all circular, the projection of the upper stamping surface (2) and the upper counter surface (4) is a small circle, the projection of the lower stamping surface (3) and the lower counter surface (5) is a large circle, the diameter of the small circle is greater than or equal to 9 mm, the diameter of the large circle is greater than or equal to 15 mm, and the stamping interval between the small circle and the large circle is equal to the diameter of the large circle. The interval between the upper stamping surface (2) and the upper counter surface (4) and the interval between the lower stamping surface (3) and the lower counter surface (5) are equal to the thickness of the stamping type electrolytic cell plate. The distance between the upper counter surface (4) and the free surface (1) is less than or equal to 3 mm, and the distance between the lower counter surface (5) and the free surface (1) is less than or equal to 3 mm. The upper counter surface (4) and the free surface (1) are connected through an inclined angle curved surface, the lower counter surface (5) and the free surface (1) are connected through an inclined angle curved surface, and the inclined angle of the inclined angle curved surface ranges from 0 to 90 degrees. The application further relates to a small chamber flow field system which comprises the stamping type electrolytic cell plate.

2. A stamped electrolytic cell plate according to claim 1, characterized in that: The electrode (7) comprises a cathode side electrode which is in contact with a diaphragm (8) at the bottom and is in contact with the flow field support layer (6) at the top; and an anode side electrode which is in contact with the diaphragm (8) at the top and is in contact with the flow field support layer (6) at the bottom, and an electrolyte fluid space (9) is arranged between the diaphragm (8) and the anode side electrode.

3. A stamped electrolytic cell plate according to claim 1, characterized in that: The electrolyte fluid space (9) is further arranged between the flow field support layer (6) and the stamping type electrolytic cell plate.

4. A stamped electrolytic cell plate according to claim 3, characterized in that: The flow field support layer (6) is made of a nickel-based electrode, a metal support net or a foamed nickel-based electrode.

5. A stamped electrolytic cell plate according to claim 4, characterized in that: ​ 6. A stamped electrolytic cell plate according to claim 4, wherein: ​ 7. A cell flow field system, characterized by, ​ ​ 8. A cell flow field system according to claim 7, wherein, ​ ​ ​ 9. A cell flow field system according to claim 8, wherein: ​ 10. The cell flow field system of claim 7, wherein: ​

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