Pole frame and electrolytic bath

Abstract

The utility model discloses a pole frame and an electrolytic bath, and relates to the technical field of alkaline water electrolysis hydrogen production. The pole frame comprises a pole frame body, two opposite end faces are arranged in the axial direction, one end face is provided with at least two clamping bosses arranged from the outer ring to the inner ring of the pole frame body, and the other end face is provided with clamping grooves in one-to-one correspondence with the clamping bosses in position. The clamping boss of one pole frame body is used for being clamped into the clamping groove of the other pole frame body, and at least one circle of clamping boss and the corresponding clamping groove are arranged at intervals in the circumferential direction. According to the pole frame provided by the utility model, the pole frame bodies are provided with the clamping bosses and the clamping positioning grooves, so that the adjacent pole frames can be quickly assembled, and after the discontinuous clamping bosses and clamping grooves are clamped, the two pole frame bodies can be limited in the circumferential direction and the radial direction, so that the dislocation in the circumferential direction and the radial direction is prevented, and the reliability of the pole frame is improved. And the stability and the reliability of installation and connection are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen production by alkaline water electrolysis, in particular to an electrode frame and an electrolytic cell. Background Art

[0002] Electrolyzer components such as support, electrode frames, pipe fittings, and structural parts typically require materials with high-temperature and corrosion resistance. Commonly used materials include steel, stainless steel, nickel-based alloys, and titanium alloys. These materials offer considerable corrosion resistance and mechanical strength, making them widely used in small electrolyzers. In recent years, electrolyzers have gradually developed toward higher electrical density, larger dimensions, and higher catalytic performance. However, existing electrode frames are heavy and complex to manufacture, making assembly difficult and resulting in poor reliability.

[0003] Therefore, how to improve the assembly efficiency and reliability of the pole frame is a technical problem that those skilled in the art currently need to solve. Utility Model Content

[0004] The purpose of the utility model is to provide a pole frame and an electrolytic cell. The pole frame provided by the utility model is used to improve the assembly efficiency and reliability of the pole frame.

[0005] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0006] In a first aspect, the present invention provides a pole frame, comprising:

[0007] The pole frame body has two opposite end faces, one of which has at least two circles of clamping bosses arranged along the outer circle to the inner circle of the pole frame body, and the other end face has a clamping groove corresponding to the position of the clamping boss. The clamping boss of one pole frame body is used to be clamped into the clamping groove of the other pole frame body, and at least one circle of the clamping boss and the corresponding clamping groove are intermittently arranged in the circumferential direction.

[0008] When the above technical solution is adopted, when installing two adjacent pole frame bodies, it is only necessary to insert the clamping boss of one pole frame body into the corresponding clamping groove of the other pole frame body, so that the two pole frame bodies can be quickly installed and fixed, which significantly improves the efficiency of the installation work, and at least one circle of clamping bosses and corresponding clamping grooves are intermittently arranged in the circumferential direction. After the intermittent clamping bosses and clamping grooves are clamped, the two pole frame bodies can be limited in the circumferential and radial directions, preventing circumferential and radial displacement, and improving the stability and reliability of the installation connection.

[0009] Optionally, when multiple circles of snap-fit bosses and snap-fit grooves are provided, the segment openings of adjacent circles may be staggered, similar to a maze structure; or a portion of the snap-fit bosses and snap-fit grooves may be segmented, and a portion may be complete rings. This arrangement is to further ensure the sealing performance.

[0010] Optionally, in the above-mentioned pole frame, a flow channel hole sealing component is provided around the edges of the flow channel hole of the pole frame body, which may be one or more ribs.

[0011] Optionally, the sealing component includes a sealing boss and a sealing groove, wherein the sealing boss is arranged on one end face of the pole frame body, and the sealing groove is arranged on the other end face of the pole frame body, and the position of the sealing groove corresponds to the position of the sealing boss. In this arrangement, the sealing boss surrounding the flow channel hole in one pole frame body is embedded in the sealing groove surrounding the flow channel hole in the other pole frame body. Through the mutual cooperation of the sealing boss and the sealing groove arranged along the periphery of the flow channel hole, not only the sealing ability of the flow channel hole in the radial direction is achieved to ensure the conveying capacity of the flow channel hole, but also the stability of the mutual installation of the two adjacent pole frame bodies is further improved.

[0012] Optionally, in the pole frame, the sealing boss and the sealing groove are both intermittently arranged along the circumference of the flow channel hole. This arrangement can further improve the positioning accuracy of the assembly of the sealing boss and the sealing groove. Compared with a continuous structure, the intermittent sealing boss and sealing groove can reduce the processing area and weight of the pole frame body while ensuring sealing and precise positioning.

[0013] Optionally, in the above-mentioned pole frame, one of the two end faces of the pole frame body further has a positioning block, and the other end face has a positioning groove corresponding to the position of the positioning block. The positioning block on one pole frame body is used to cooperate with the positioning groove on the other pole frame body for positioning. In this way, one end face of the pole frame body is provided with a positioning block, and the other end face is provided with a positioning groove. When two adjacent pole frame bodies are installed, the positioning block of one pole frame body is correspondingly installed in the positioning groove of the other pole frame body. The cooperation between the positioning block and the positioning groove plays a role in circumferential and radial positioning of the two installed pole frame bodies, thereby improving the error-proofing capability and accuracy of the assembly process.

[0014] Optionally, in the pole frame, multiple positioning blocks and positioning grooves are provided, each corresponding to the other, and the positioning blocks are spaced and distributed on the same circumference. Thus, the positioning blocks and positioning grooves, which are evenly spaced and distributed on the same circumference, further enhance the positioning and foolproofing capabilities of the positioning blocks and positioning grooves, thereby preventing mismatching when installing the two pole frame bodies and improving installation accuracy.

[0015] Optionally, in the pole frame, the positioning block and the positioning groove are both polygonal, circular, elliptical, or curved closed structures. Thus, by matching the corresponding shapes of the positioning block and the positioning groove, the precise fit of the positioning block and the positioning groove is ensured, further enhancing the error-proofing capability of the positioning block and the positioning groove. Preferably, the positioning block and the positioning groove are configured as regular polygons, circles, or the like.

[0016] Optionally, in the above-mentioned pole frame, the positioning groove and the positioning block are both structures extending in the radial direction of the pole frame body or in the circumferential direction of the pole frame body. By setting different extension directions for the positioning groove and the positioning block, the error-proofing capability of the positioning block and the positioning groove is further enhanced, thereby improving the precision of the fit between the two pole frame bodies.

[0017] Optionally, the pole frame further includes a buffer strip embedded in the pole frame body, into which the pole plates extend, and the pole plates are connected to the pole frame body via the buffer strip. In this way, when there is a significant difference in the coefficient of expansion between the pole plates and the pole frame body, the buffer strip can promptly absorb the energy generated by temperature stress, alleviating the stress conflict between the pole plates and the pole frame body, and effectively preventing significant deformation of the pole frame body and pole plates during operation of the electrolytic cell.

[0018] Optionally, in the pole frame, the pole frame body is made of a polymer material. This reduces the weight of the pole frame provided by the present invention, further improving assembly efficiency. Polymer materials are also alkali-resistant, corrosion-resistant, and high-temperature-resistant, extending the service life of the pole frame provided by the present invention and significantly optimizing the overall structure.

[0019] Optionally, in the pole frame, the pole frame body and the pole plates are integrally formed by casting. In this way, the pole frame body and the pole plates are integrally formed by casting, which not only simplifies the processing flow and improves the processing efficiency, but also improves the reliability and stability of the overall structure.

[0020] In a second aspect, the present invention further provides an electrolytic cell, comprising a pole frame, wherein the pole frame is a pole frame as described in any of the above items. During the assembly process of the electrolytic cell, a gasket is installed between two adjacent pole frames, and as the assembly force increases, the gasket is engaged with the corresponding portion of the pole frame to be sealed, such as a snap-fit boss, a snap-fit groove, a flow channel hole sealing component, a positioning block, a positioning groove, etc. Compared with the pole frame of the prior art, since the snap-fit boss and the snap-fit groove are provided on the axial end face of the pole frame of the present application, a certain degree of snap-fit sealing effect has been achieved. Therefore, when assembling the pole frame structure of the present application, a thinner gasket can be selected, which can also meet the sealing requirements and reduce the cost of the electrolytic cell.

[0021] The electrolytic cell provided by the present invention has all the technical effects of the above-mentioned pole frame, and thus will not be described in detail herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0023] Figure 1 This is a schematic structural diagram of the pole frame disclosed in an embodiment of the present utility model;

[0024] Figure 2 for Figure 1 Cross-sectional view of AA;

[0025] Figure 3 for Figure 2 A partial enlarged view of Figure I;

[0026] Figure 4 for Figure 1 Cross-sectional view of the BB.

[0027] Reference numerals:

[0028] 100 is the pole frame body, 110 is the clamping boss, 120 is the clamping groove, 130 is the buffer strip, 140 is the flow channel hole, 150 is the sealing boss, and 160 is the positioning block;

[0029] 200 is the plate. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined. "Several" means one or more, unless otherwise specifically defined.

[0033] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0034] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0035] The core of the utility model is to provide a pole frame for improving the assembly efficiency and reliability of the pole frame;

[0036] Another core of the present invention is to provide an electrolytic cell having the above-mentioned pole frame.

[0037] like Figures 1-4 As shown, an embodiment of the present invention discloses a pole frame, including a pole frame body 100. One of the two end faces of the pole frame body 100 is provided with at least two circles of clamping bosses 110 arranged along the outer circle to the inner circle of the pole frame body 100, and the other face is provided with the same number of clamping grooves 120. For example, there can be two, three, or more circles, and the clamping bosses 110 and the clamping grooves 120 are arranged in a one-to-one correspondence at the positions of the pole frame body 100. At least one circle of the clamping bosses 110 and the corresponding clamping grooves 120 are intermittently arranged in the circumferential direction, that is, the clamping bosses 110 and the clamping grooves 120 are discontinuous segmented structures in the circumferential direction. Each circle of the clamping bosses 110 can be arranged in a circle or a square circle, etc., and according to the shape of the pole frame body 100, the pole frame body 100 can be a circular ring structure or a square ring structure.

[0038] When the two pole frame bodies 100 need to be assembled, it is only necessary to insert the clamping boss 110 of one pole frame body 100 into the clamping groove 120 of the other pole frame body 100, so that the two pole frame bodies 100 are quickly installed and fixed, which significantly improves the efficiency of the installation work. At least one circle of clamping bosses 110 and corresponding clamping grooves 120 are intermittently arranged in the circumferential direction. After the intermittent clamping bosses 110 and clamping grooves 120 are clamped, the two pole frame bodies 100 can be limited in the circumferential and radial directions to prevent circumferential and radial displacement, thereby improving the stability and reliability of the installation connection.

[0039] For example, when multiple circles of snap-fitting bosses 110 and snap-fitting grooves 120 are provided, the inter-segment openings of adjacent circles can be staggered, similar to a maze structure; or part of the snap-fitting bosses 110 and snap-fitting grooves 120 are inter-segmented, and part are complete rings. This arrangement is to further ensure the sealing performance.

[0040] like Figure 1 and Figure 4 As shown, in some embodiments, a flow hole sealing component is provided around the flow hole 140 of the pole frame body 100, and the flow hole sealing component improves the flow sealing performance in the flow hole 140 on the adjacent pole frame body 100. The flow hole sealing component can be one or more ribs.

[0041] For example, the flow channel hole sealing component in this embodiment includes a sealing boss 150 and a sealing groove, which are respectively arranged on the two end surfaces of the pole frame body 100. When two adjacent pole frame bodies 100 are installed with each other, the sealing boss 150 on one pole frame body 100 will be embedded in the sealing groove on the other pole frame body 100, and then a sealing effect is achieved through the mutual cooperation between the sealing boss 150 and the sealing groove, thereby improving the flow between the flow channel holes 140 on the two adjacent pole frame bodies 100 with good sealing, avoiding leakage of the transported substance to other parts, and further improving the stability of the assembly.

[0042] Furthermore, in some embodiments, the sealing boss 150 and the sealing groove are both intermittently arranged along the circumference of the flow channel hole 140. That is, the sealing boss 150 and the sealing groove are discontinuous and segmented structures along the circumference of the flow channel hole 140. This arrangement can further improve the positioning accuracy of the assembly of the sealing boss 150 and the sealing groove. Compared to a continuous structure, the intermittent sealing boss 150 and sealing groove can reduce the processing area and weight of the pole frame body 100 while ensuring sealing and precise positioning.

[0043] like Figure 1As shown, the clamping boss 110 and the clamping groove 120 are both provided with multiple circles, further improving the stability, reliability, and sealing ability of the assembly of adjacent pole frame bodies 100. For the two pole frame bodies 100 installed, a flat gasket or O-ring can be installed on the outermost clamping boss 110 to perform external sealing. In this case, the boss height of the outermost clamping boss 110 is 0.3 to 3 mm and the width can be 0.1 to 5 mm, while the height of the clamping boss 110 located relatively in the inner circle can be 0.5 to 3 mm and the width can be 0.5 to 5 mm. The clamping boss 110 can be adjusted according to the overall size of the pole frame body 100, ensuring that the clamping method has good stability without affecting the pole frame body 100.

[0044] like Figure 1 As shown, in some embodiments, one of the two end faces of the pole frame body 100 is further provided with a positioning block 160, and the other end face is provided with a positioning groove corresponding to the position of the positioning block 160. When two adjacent pole frame bodies 100 are installed, the positioning block 160 on one pole frame body 100 needs to be installed in the positioning groove on the other pole frame body 100. The mutual cooperation between the positioning block 160 and the positioning groove plays circumferential and radial positioning role in the installation process of the two pole frame bodies 100, avoids circumferential and radial mutual misalignment, ensures the accurate installation and cooperation of the two pole frame bodies 100, and makes the pole frame provided by this embodiment have better error-proofing ability, thereby improving the efficiency and accuracy of installation work.

[0045] In addition, the pole frame body 100 is provided with multiple positioning blocks 160 and positioning grooves, and each positioning block 160 is evenly spaced and distributed on the same circumference. Of course, it is understandable that the positioning grooves corresponding to the positioning blocks 160 are evenly spaced and distributed on the same circumference, and the circumference on which the positioning grooves are located is the same as the circumference on which the positioning blocks 160 are located. By having multiple positioning blocks and positioning grooves evenly spaced and distributed on the same circumference, the positioning ability of the positioning blocks 160 and the positioning grooves is further improved, avoiding the problem of large offset when two pole frame bodies 100 are installed.

[0046] To improve the positioning error prevention capabilities of the positioning block 160 and the positioning groove, both can be designed as polygonal, circular, elliptical, or curved closed structures. A multi-curved closed structure can be an irregular shape formed by multiple curves, such as a waist-shaped structure, a teardrop-shaped structure, or a dumbbell-shaped structure. A polygonal structure can be a triangle, a trapezoid, a rectangle, an irregular quadrilateral, a pentagon, or the like. The combined fool-proof design of the polygonal, elliptical, and curved closed structures further prevents misalignment after relative rotation of the two pole frame bodies 100. In one specific embodiment, the positioning block 160 is a trapezoidal protrusion, and the positioning groove is correspondingly designed as a trapezoid. This polygonal structure prevents relative rotation of the positioning block 160 within the positioning groove, thereby improving positioning accuracy. Alternatively, both the positioning block 160 and the positioning groove can be circular, which can enhance the smoothness of the installation process. Those skilled in the art can design the positioning block 160 and the positioning groove according to actual needs, and this article does not list all of these.

[0047] In a specific embodiment, the positioning block 160 and the positioning groove are both structures extending in the radial direction of the pole frame body 100, and can also be structures extending in the circumferential direction of the pole frame body 100. For example, for non-circular structures, non-regular polygonal structures, etc., as long as the overall structure has a relatively long and relatively short structure, the relatively long direction of the structure is the extension direction. Therefore, the positioning block 160 and the positioning groove extending in the radial or circumferential direction cooperate with each other to improve the positioning capability and error prevention capability of the pole frame body 100 in the circumferential and radial directions, and further improve the accuracy of the installation and matching of the two pole frame bodies 100.

[0048] In a specific embodiment, the height of the sealing boss 150 needs to be 15% to 30% lower than the clamping boss 110 to ensure good clamping stability and good sealing performance. The height of the positioning block 160 can be 1 to 20 mm, and the height must be lower than 50% of the thickness of the pole frame to avoid the positioning groove being too deep and affecting the structural strength of the pole frame body 100. The side length and diameter of the positioning block 160 can be 0.5 to 50 mm, or those skilled in the art can adjust the size of the sealing boss 150 according to the actual size of the pole frame body 100.

[0049] like Figure 3 and Figure 4As shown, the electrode plate 200 is connected to the electrode frame body 100. However, when the difference in expansion coefficient between the electrode plate 200 and the electrode frame body 100 is large, the temperature changes greatly during the operation of the electrolytic cell. In order to avoid large deformation of the electrode plate 200 and the electrode frame body 100 caused by temperature changes, a buffer bar 130 is embedded in the electrode frame body 100. When the electrode plate 200 is connected to the electrode frame body 100, the edge of the electrode plate 200 extends into the buffer bar 130 of the electrode frame body 100, so that the electrode plate 200 is connected to the electrode frame body 100 through the buffer bar 130, and the portion of the electrode plate 200 extending into the buffer bar 130 is separated from the electrode frame body 100 by the buffer bar 130 to form a buffer area. Then, the buffer bar 130 can timely buffer and absorb the energy generated by the temperature stress, alleviate the stress conflict between the electrode plate 200 and the electrode frame body 100, and effectively avoid large deformation of the pole frame body 100 and the electrode plate 200 during the operation of the electrolytic cell. In a specific embodiment, the buffer strip 130 is made of a rubber material, specifically silicone rubber, methyl vinyl silicone rubber or EPDM rubber, preferably silicone rubber or EPDM rubber.

[0050] The clamping bosses 110 respectively provided along the outer ring and the inner ring of the pole frame body 100 can be provided on the same end face or on opposite end faces. Figure 3 and Figure 4 The above arrangement is all for the purpose of making the shear force on the gasket more uniform after installation, and the specific pole frame structure shall be adopted according to the specific situation.

[0051] In another specific embodiment, each circle of the engaging bosses 110 and engaging grooves 120 is divided into multiple segments, and each segment of the engaging bosses 110 corresponds to a segment of the engaging grooves 120. The segments of the engaging bosses 110 and engaging grooves 120 are evenly spaced and distributed on the same circumference. The engaging bosses 110 and engaging grooves 120 are strip-shaped structures. Preferably, the engaging bosses 110 and engaging grooves 120 can be evenly divided into 4 to 6 segments. Alternatively, the engaging bosses 110 can be configured as a bump structure. Those skilled in the art can design according to actual needs, and this article does not list them one by one.

[0052] The pole frame body 100 in the pole frame provided in this embodiment is made of a polymer material. In a specific embodiment, the material of the pole frame body 100 can be a rubber or plastic material such as PSU plastic (Polysulfone), PEEK (Polyetheretherketone), PDCPD (polydicyclopentadiene), EPDM (Ethylene Propylene Diene Monomer), etc., among which PSU plastic can be preferred. The use of polymer material for the pole frame body 100 not only significantly reduces the weight and realizes a lightweight design, thereby improving the assembly efficiency, but also the polymer material has the characteristics of alkali resistance, corrosion resistance, and high temperature resistance, thereby improving the service life of the pole frame provided by the utility model and significantly optimizing the entire structure.

[0053] To further enhance structural reliability, the pole frame provided in this embodiment can be manufactured by integrally molding the pole frame body 100 and the pole plate 200 using an injection molding method, thereby enhancing the stability of the component connections and improving processing efficiency. Of course, it is understandable that the pole frame body 100 can also be injection molded first, and then the pole plate 200 can be embedded in the pole frame body 100. In addition, when the pole frame body 100 and the buffer strip 130 are both made of rubber, the pole frame body 100 and the buffer strip 130 can be co-vulcanized and integrally molded.

[0054] The embodiment of the present utility model also discloses an electrolytic cell, including a pole frame. During the assembly process of the electrolytic cell, a gasket is installed between two adjacent pole frames. As the assembly force increases, the gasket is engaged with the corresponding portion of the pole frame to be sealed, such as the snap-fit boss 110, the snap-fit groove 120, the flow channel hole sealing component, the positioning block 160, the positioning groove, etc. Compared with the pole frame of the prior art, since the snap-fit boss and the snap-fit groove are provided on the axial end face of the pole frame of the present application, a certain degree of snap-fit sealing effect has been achieved. Therefore, when assembling the pole frame structure of the present application, a thinner gasket can be selected, which can also meet the sealing requirements and reduce the cost of the electrolytic cell. In addition, since the electrolytic cell has the above-mentioned pole frame, it has all the technical effects of the above-mentioned pole frame, which will not be described in detail herein.

[0055] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0056] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A pole frame, characterized in that: include: The pole frame body has two opposite end faces in the axial direction, one of which has at least two circles of clamping bosses arranged from the outer ring to the inner ring of the pole frame body, and the other end face has a clamping groove corresponding to the clamping bosses one by one. The clamping boss of one pole frame body is used to be clamped into the clamping groove of the other pole frame body, and at least one circle of the clamping bosses and the corresponding clamping grooves are intermittently arranged in the circumferential direction.

2. The pole frame according to claim 1, characterized in that A flow channel hole sealing component is arranged around the edges of the flow channel hole of the pole frame body.

3. The pole frame according to claim 2, characterized in that The flow channel hole sealing component includes a sealing boss and a sealing groove. The sealing boss is arranged on one end surface of the pole frame body, and the sealing groove is arranged on the other end surface of the pole frame body. The position of the sealing groove corresponds to that of the sealing boss.

4. The pole frame according to claim 3, characterized in that The sealing boss and the sealing groove are both intermittently arranged along the circumference of the flow channel hole.

5. The pole frame according to claim 1, characterized in that One of the two end faces of the pole frame body further has a positioning block, and the other end face has a positioning groove corresponding to the position of the positioning block. The positioning block on one pole frame body is used to cooperate with the positioning groove on the other pole frame body for positioning.

6. The pole frame according to claim 5, characterized in that The positioning blocks and the positioning grooves are both provided in plurality and correspond to each other one by one, and the positioning blocks are spaced and distributed on the same circumference.

7. The pole frame according to claim 5, characterized in that The positioning block and the positioning groove are both polygonal structures, circular structures, elliptical structures or curved closed structures.

8. The pole frame according to claim 5, characterized in that The positioning groove and the positioning block are both structures extending along the radial direction of the pole frame body or structures extending along the circumferential direction of the pole frame body.

9. The pole frame according to claim 1, characterized in that It also includes a buffer strip embedded in the pole frame body, the edge of the pole plate extends into the buffer strip, and the pole plate is connected to the pole frame body through the buffer strip.

10. The pole frame according to any one of claims 1 to 9, characterized in that: The pole frame body is made of a polymer material, and / or the pole frame body and the pole plate are integrally formed by casting.

11. An electrolytic cell, characterized in that: It comprises a pole frame, and the pole frame is the pole frame according to any one of claims 1-10.

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