Hydrogen production insulation structure and electrolytic bath

Abstract

The utility model relates to an electrical element, and discloses a hydrogen production insulation structure and an electrolytic bath, and the hydrogen production insulation structure comprises a pole plate; the insulation assembly comprises an upper cover plate and a lower cover plate, the upper cover plate and the lower cover plate are located on the upper side and the lower side of the polar plate respectively, the upper cover plate and the lower cover plate are connected with each other and define an insulation cavity, and the polar plate is located in the insulation cavity. And the exposure of the polar plate is reduced, and the short circuit problem caused by part dislocation and electrolyte in the air is effectively prevented, so that the safety and the stability of the electrolytic cell during working are favorably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to an electrical element, especially to a hydrogen production insulation structure and electrolytic cell. BACKGROUND

[0002] PEM electrolytic cell is a kind of hydrogen production equipment using proton exchange membrane as solid electrolyte, and is composed of multiple hydrogen production units in series, each hydrogen production unit includes membrane electrode, anode diffusion layer, cathode diffusion layer, sealing member and polar plate etc., and the edge of the insulation frame in the membrane electrode is flush with the edge of the polar plate, due to multiple stacking assembly steps, misalignment is prone to occur between components, leading to short circuit between polar plates.

[0003] In order to avoid short circuit caused by misalignment, the insulation frame in the membrane electrode is usually extended out of the polar plate edge by a certain distance, which can reduce the short circuit of polar plate caused by misalignment between components to a certain extent, but when the PEM electrolytic cell is in a relatively humid environment, the conductive medium contained in the air will cause short circuit between polar plates, resulting in damage to internal electrical elements, therefore, a hydrogen production insulation structure with better moisture-proof effect is urgently needed. SUMMARY

[0004] The utility model aims at providing a kind of hydrogen production insulation structure and electrolytic cell, to solve one or more technical problems existing in prior art, at least provide a kind of beneficial selection or create conditions.

[0005] The utility model solves the technical problem of the solution scheme:

[0006] A kind of hydrogen production insulation structure, comprising: polar plate;Insulation assembly, including upper cover plate and lower cover plate, the upper cover plate and the lower cover plate are located at the upper and lower sides of the polar plate respectively, the upper cover plate and the lower cover plate are connected with each other and are enclosed to form insulation cavity, and the polar plate is located in the insulation cavity.

[0007] The technical scheme at least has the beneficial effects as follows: the upper cover plate and the lower cover plate are located at the upper and lower sides of the polar plate respectively, the upper cover plate and the lower cover plate are connected with each other, the polar plate can be loaded into the insulation cavity enclosed by the upper cover plate and the lower cover plate, the upper cover plate and the lower cover plate are used to surround and protect the four sides of the polar plate, so that the polar plate is shielded and protected by the upper cover plate and the lower cover plate, the exposure of the polar plate is reduced, the short circuit problem caused by component misalignment and electrolyte in the air is effectively prevented, thereby the safety and stability of the electrolytic cell during work are improved.

[0008] As a further improvement of the above technical solution, the outer edge of the polar plate is formed with a connecting part extending around the polar plate, the thickness of the connecting part is smaller than the thickness of the polar plate, the bottom side of the upper cover plate is provided with a receiving groove, and the connecting part is embedded in the receiving groove. The connecting part is formed on the outer edge of the polar plate for positioning connection. When the polar plate is assembled with the upper cover plate and the lower cover plate, the connecting part on the outer edge of the polar plate is embedded in the receiving groove on the bottom side of the upper cover plate to quickly connect and position the polar plate and the upper cover plate, and then the lower cover plate is connected with the upper cover plate to surround and protect the polar plate. In this way, the overall assembly efficiency is improved, and the overall structure is more compact.

[0009] As a further improvement of the above technical solution, the top side of the lower cover plate is connected with a clamping hook, the connecting part is provided with a first avoiding hole opposite to the position of the clamping hook, the upper cover plate is provided with a clamping hole opposite to the position of the clamping hook, and the clamping hook passes through the first avoiding hole and is connected with the clamping hole. When the upper cover plate is connected with the lower cover plate, the clamping hook on the top side of the lower cover plate passes through the first avoiding hole of the connecting part to realize the relative positioning between the lower cover plate and the polar plate, and then the clamping hook is connected with the clamping hole of the upper cover plate to realize the mutual fixation of the lower cover plate and the upper cover plate through the clamping of the clamping hook on the edge position of the clamping hole, thereby preventing the polar plate from being pulled out between the upper cover plate and the lower cover plate and realizing the tight connection between the upper cover plate, the polar plate and the lower cover plate.

[0010] As a further improvement of the above technical solution, the clamping hook is provided in two along the length or width direction of the lower cover plate, and the two clamping hooks are opposite in direction. The two opposite clamping hooks are clamped and fixed on the edge positions of the two clamping holes, which can further improve the stability of the clamping and fixation of the lower cover plate and effectively prevent the upper cover plate from moving in the direction of the clamping hook and causing the upper cover plate to be disconnected from the lower cover plate.

[0011] As a further improvement of the above technical solution, the top side of the lower cover plate is connected with a positioning column, the polar plate is provided with a second avoiding hole through which the positioning column passes, and the upper cover plate is provided with a positioning hole which can be connected with the positioning column. When the upper cover plate is assembled with the lower cover plate, the positioning column on the top side of the lower cover plate passes through the second avoiding hole and is connected with the positioning hole of the upper cover plate to quickly pre-position the upper cover plate and the lower cover plate. At this time, the upper cover plate and the lower cover plate are tightly connected with each other. Since the positioning column and the positioning hole limit the upper cover plate and the lower cover plate relative to each other, the relative deviation of the upper cover plate and the lower cover plate when the clamping hook is inserted into the clamping hole is effectively reduced, and the convenience and efficiency of the overall assembly are improved.

[0012] As a further improvement of the above technical solution, two of the hooks and one of the positioning columns located on one side of the lower cover plate form a connecting group, and the multiple sides of the lower cover plate are respectively provided with the connecting groups. In one connecting group, the positioning column is used for pre-positioning and guiding, and the two hooks facing opposite directions are used for buckling positioning, so that the quick connecting and positioning of one side of the upper cover plate and one side of the lower cover plate can be realized, thereby forming connecting and positioning between the multiple sides of the upper cover plate and the multiple sides of the lower cover plate, strengthening the connecting and fixing between the upper cover plate and the lower cover plate, and further improving the surrounding effect on the polar plate.

[0013] As a further improvement of the above technical solution, the surface of the connecting part on the outer side of the polar plate is formed with a reinforcing rib. The reinforcing rib on the outer side of the polar plate extends to the surface of the connecting part, which strengthens the stability of the polar plate structure and makes the polar plate not easy to deform under stress.

[0014] As a further improvement of the above technical solution, the side wall of the receiving groove is formed with a positioning boss, and the connecting part abuts against the positioning boss. The positioning boss forms a concave corner position for positioning the connecting part, which facilitates the quick pre-positioning of the connecting part. At this time, the space beside the positioning boss of the receiving groove is used to receive and avoid the structure of the polar plate itself, so that the overall connection is more compact.

[0015] As a further improvement of the above technical solution, the reinforcing rib is provided with a positioning protrusion on the side away from the polar plate, the positioning boss is provided with a positioning groove opposite the position of the positioning protrusion, and the positioning protrusion is connected to the positioning groove. When the connecting part is placed in the positioning boss, the positioning protrusion on the reinforcing rib is matched with the positioning groove of the positioning boss, which forms a connection at the position of the connecting part, thereby further strengthening the stability of the position defined by the upper cover plate and the lower cover plate on the polar plate.

[0016] An electrolytic cell comprising the above hydrogen production insulation structure.

[0017] The technical solution has at least the following beneficial effects: in the electrolytic cell, the polar plate is shielded and protected by the upper cover plate and the lower cover plate, the exposure of the polar plate is reduced, the short circuit problem caused by mispositioning of components and electrolyte in the air is effectively prevented, and the safety and stability of the electrolytic cell during operation are improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required in the embodiment description will be briefly described below. Obviously, the described drawings are only a part of the embodiments of the present application, not all embodiments, and those skilled in the art can obtain other design schemes and drawings from these drawings without creative labor.

[0019] Figure 1 is the explosion schematic diagram of the hydrogen production insulation structure

[0020] Figure 2 is Figure 1 A partial enlarged schematic view of part.

[0021] Figure 3 is Figure 1 B partial enlarged schematic view of part.

[0022] In the drawings: 100-plate, 110-connection, 111-first avoiding hole, 112-second avoiding hole, 113-reinforcing rib, 114-positioning convex tooth, 210-upper cover plate, 211-receiving groove, 212-clamping hole, 213-positioning boss, 214-positioning hole, 215-positioning groove, 220-lower cover plate, 221-claw, 222-positioning column. DETAILED DESCRIPTION

[0023] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0024] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation of the present application. The device or element indicated is not necessarily constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0025] In the description of the present application, the meaning of several is one or more, and the meaning of multiple is two or more. Greater than, less than, more than, etc. are understood as not including the number, and above, below, etc. are understood as including the number. If it is described as first, second, it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of indicated technical features.

[0026] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0027] Referring to Figure 1The application discloses a hydrogen production insulation structure, which comprises an electrode plate 100 and an insulation assembly, wherein the insulation assembly comprises an upper cover plate 210 and a lower cover plate 220, the upper cover plate 210 and the lower cover plate 220 are respectively arranged on the upper side and the lower side of the electrode plate 100, the upper cover plate 210 and the lower cover plate 220 are connected with each other and form an insulation cavity, and the electrode plate 100 is arranged in the insulation cavity. In actual application, a groove structure for accommodating the electrode plate 100 can be arranged on the bottom side of the upper cover plate 210, when the lower cover plate 220 is connected to the upper cover plate 210, the upper cover plate 210 and the lower cover plate 220 form the above-mentioned insulation cavity in the groove structure. Alternatively, a groove structure for accommodating the electrode plate 100 can be arranged on the top side of the lower cover plate 220, when the lower cover plate 220 is connected to the upper cover plate 210, the upper cover plate 210 and the lower cover plate 220 form the above-mentioned insulation cavity in the groove structure. Alternatively, groove structures are arranged on the bottom side of the upper cover plate 210 and the top side of the lower cover plate 220 respectively, when the lower cover plate 220 is connected to the upper cover plate 210, the groove structure on the bottom side of the upper cover plate 210 and the groove structure on the top side of the lower cover plate 220 jointly form the above-mentioned insulation cavity.

[0028] As known from the above, the upper cover plate 210 and the lower cover plate 220 are respectively arranged on the upper side and the lower side of the electrode plate 100, the upper cover plate 210 and the lower cover plate 220 are connected with each other, the electrode plate 100 can be arranged in the insulation cavity formed by the two, the four sides of the electrode plate 100 are surrounded and protected by the upper cover plate 210 and the lower cover plate 220, the electrode plate 100 is shielded and protected by the upper cover plate 210 and the lower cover plate 220, the exposure of the electrode plate 100 is reduced, the short circuit problem caused by component misplacement and electrolyte in air is effectively prevented, and therefore the safety and stability of the electrolytic cell during work are improved.

[0029] In order to improve the stability of the electrode plate 100 arranged in the accommodating groove 211, a structure for further limiting the electrode plate 100 can be arranged, specifically, as shown in Figure 2As shown, a connecting portion 110 is formed on the outer edge of the electrode plate 100. The connecting portion 110 extends around the electrode plate 100. The thickness of the connecting portion 110 is less than the thickness of the electrode plate 100. A receiving groove 211 is provided on the bottom side of the upper cover plate 210. The connecting portion 110 is embedded in the receiving groove 211. In practical applications, the connecting portion 110 can be a portion of the outer edge of the electrode plate 100 that is recessed relative to the upper and lower surfaces of the electrode plate 100, forming a relatively thin portion for cooperation with the receiving groove 211. A connecting portion 110 for connection and positioning is formed on the outer edge of the electrode plate 100. When assembling the electrode plate 100 with the upper cover plate 210 and the lower cover plate 220, the connecting portion 110 on the outer edge of the electrode plate 100 can be embedded into the storage groove 211 on the bottom side of the upper cover plate 210 to achieve quick connection and positioning between the electrode plate 100 and the upper cover plate 210. Then, the lower cover plate 220 is connected to the upper cover plate 210 to surround and protect the electrode plate 100. This improves the overall assembly efficiency and makes the overall structure more compact.

[0030] In the above embodiment, the upper cover plate 210 and the lower cover plate 220 can directly clamp the electrode plate 100 into the insulating cavity, thereby positioning the electrode plate 100. At this time, the connection structure between the upper cover plate 210 and the lower cover plate 220 is only provided at their edges. For example, interlocking buckles are provided on the outer edges of the upper cover plate 210 and the lower cover plate 220. After connecting them, the electrode plate 100 is pressed and fixed. To further improve the sealing performance of the connection between the upper cover plate 210, the electrode plate 100, and the lower cover plate 220, the connection structure between the upper cover plate 210 and the lower cover plate 220 can pass through the electrode plate 100 itself, thus limiting the electrode plate 100. Specifically, for example... Figure 3 As shown, a hook 221 is connected to the top side of the lower cover plate 220, and a first clearance hole 111 is provided in the connecting part 110 opposite to the hook 221. A snap-fit ​​hole 212 is provided in the upper cover plate 210 opposite to the hook 221. The hook 221 passes through the first clearance hole 111 and is engaged with the snap-fit ​​hole 212. When connecting the upper cover plate 210 and the lower cover plate 220, the hook 221 on the top side of the lower cover plate 220 passes through the first clearance hole 111 of the connecting part 110 to achieve relative positioning between the lower cover plate 220 and the electrode plate 100. Then, the hook 221 is connected to the snap-fit ​​hole 212 of the upper cover plate 210. By hooking and fixing the edge of the snap-fit ​​hole 212 with the hook 221, the lower cover plate 220 and the upper cover plate 210 can be fixed together, preventing the electrode plate 100 from coming out between the upper cover plate 210 and the lower cover plate 220, and achieving a tight connection between the upper cover plate 210, the electrode plate 100 and the lower cover plate 220.

[0031] The number of the clamping hooks 221 on one side of the lower cover plate 220 can be one or more. In some embodiments, two clamping hooks 221 are arranged along the length or width direction of the lower cover plate 220, and the two clamping hooks 221 are oppositely oriented. The two oppositely oriented clamping hooks 221 are respectively clamped and fixed at the edge positions of the two clamping holes 212, which can further improve the stability of the clamping and fixing of the lower cover plate 220, and effectively prevent the upper cover plate 210 from moving in the direction of the clamping hooks 221 and causing the upper cover plate 210 to disengage from the lower cover plate 220.

[0032] When the clamping hooks 221 are connected to the clamping holes 212, the clamping hooks 221 need to be elastically deformed, so as to be elastically reset after passing through the clamping holes 212. In order to ensure that the upper cover plate 210 and the lower cover plate 220 can be more stably engaged when the clamping hooks 221 are matched with the clamping holes 212, in the present embodiment, the top side of the lower cover plate 220 is connected with a positioning column 222, the polar plate 100 is provided with a second avoiding hole 112 through which the positioning column 222 passes, and the upper cover plate 210 is provided with a positioning hole 214 which can be matched and connected with the positioning column 222. When the upper cover plate 210 and the lower cover plate 220 are assembled, the positioning column 222 on the top side of the lower cover plate 220 passes through the second avoiding hole 112 and is matched with the positioning hole 214 of the upper cover plate 210, so as to quickly pre-position the upper cover plate 210 and the lower cover plate 220. At this time, the upper cover plate 210 and the lower cover plate 220 are engaged, and since the positioning column 222 and the positioning hole 214 limit the upper cover plate 210 and the lower cover plate 220, the relative deviation of the upper cover plate 210 and the lower cover plate 220 when the clamping hooks 221 are inserted into the clamping holes 212 can be effectively reduced, and the convenience and efficiency of the overall assembly are improved.

[0033] In some embodiments, two clamping hooks 221 and one positioning column 222 on one side of the lower cover plate 220 form a connection group. In actual application, the positioning column 222 can be located between the two clamping hooks 221, so as to limit the two clamping hooks 221 by using the positioning column 222 itself. The plurality of side edges of the lower cover plate 220 are respectively provided with the connection group. In one connection group, the positioning column 222 is used for pre-positioning and guiding, and the two oppositely oriented clamping hooks 221 are used for clamping positioning, so as to quickly connect and position one side of the upper cover plate 210 and one side of the lower cover plate 220. In this way, the connection and positioning are formed between the plurality of side edges of the upper cover plate 210 and the plurality of side edges of the lower cover plate 220, the connection and fixing between the upper cover plate 210 and the lower cover plate 220 are strengthened, and the surrounding effect of the polar plate 100 is further improved.

[0034] The connecting part 110 is prone to deformation when the force is too large due to its thin thickness, and therefore, in the embodiment, a reinforcing rib 113 is formed on the surface of the connecting part 110 outside the polar plate 100. The reinforcing rib 113 outside the polar plate 100 extends to the surface of the connecting part 110, and the stability of the structure of the polar plate 100 is enhanced, so that the polar plate 100 is not prone to deformation when subjected to force.

[0035] The upper and lower sides of the polar plate 100 itself have protruding parts, and in order to protect the structure of the polar plate 100 itself, in the embodiment, a positioning boss 213 is formed on the side wall of the receiving groove 211, and the connecting part 110 abuts against the positioning boss 213. The concave corner position of the connecting part 110 is formed by the positioning boss 213, and the connecting part 110 can be quickly and preliminarily positioned, and at this time, the structure of the polar plate 100 itself is received and avoided by the space beside the positioning boss 213, so that the overall connection is more compact.

[0036] When the upper cover plate 210 and the lower cover plate 220 are close to each other and folded, the polar plate 100 is clamped up and down, in addition, the connecting part 110 at the outer edge of the polar plate 100 cooperates with the receiving groove 211, and the shaking of the polar plate 100 in the receiving groove 211 is prevented, and in order to further improve the stability of the installation of the polar plate 100 in the receiving groove 211, in the embodiment, the positioning protrusion 114 is arranged on the side away from the polar plate 100 of the reinforcing rib 113, the positioning groove 215 is arranged at the position opposite to the positioning protrusion 114 of the positioning boss 213, and the positioning protrusion 114 cooperates with the positioning groove 215. When the connecting part 110 is placed on the positioning boss 213, the positioning protrusion 114 on the reinforcing rib 113 cooperates with the positioning groove 215 of the positioning boss 213, the position of the connecting part 110 is connected, and the stability of the position limitation of the polar plate 100 by the upper cover plate 210 and the lower cover plate 220 is further enhanced.

[0037] An electrolytic cell comprising the hydrogen production insulation structure.

[0038] In the electrolytic cell, due to the hydrogen production insulation structure, the polar plate 100 is shielded and protected by the upper cover plate 210 and the lower cover plate 220, and the exposure of the polar plate 100 is reduced, the short circuit problem caused by the misplacement of components and the electrolyte in the air is effectively prevented, and the safety and stability of the electrolytic cell during operation are improved.

[0039] The preferred embodiments of the utility model are described in detail above, but the application is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the utility model, and these equivalent modifications or replacements are all included in the range defined by the claims of the application.

Claims

1. A hydrogen production insulation structure, characterized by: The application relates to a hydrogen production insulation structure. The outer edge of the polar plate (100) is provided with a connecting part (110) extending around the polar plate (100), the thickness of the connecting part (110) is smaller than that of the polar plate (100), the bottom side of the upper cover plate (210) is provided with a receiving groove (211), and the connecting part (110) is embedded in the receiving groove (211). The top side of the lower cover plate (220) is connected with a clamping hook (221), the position opposite to the clamping hook (221) of the connecting part (110) is provided with a first avoiding hole (111), the position opposite to the clamping hook (221) of the upper cover plate (210) is provided with a clamping hole (212), the clamping hook (221) passes through the first avoiding hole (111) and is connected with the clamping hole (212) in a matched mode.

2. The hydrogen-producing insulating structure of claim 1, wherein: The clamping hook (221) is arranged in two opposite directions along the length or width of the lower cover plate (220).

3. A hydrogen-producing insulating structure according to claim 2, wherein: The top side of the lower cover plate (220) is connected with a positioning column (222), the polar plate (100) is provided with a second avoiding hole (112) through which the positioning column (222) passes, and the upper cover plate (210) is provided with a positioning hole (214) matched with the positioning column (222) in a connecting mode.

4. The hydrogen-producing insulating structure of claim 3, wherein: Two clamping hooks (221) and one positioning column (222) on one side of the lower cover plate (220) form a connecting group, and the plurality of side edges of the lower cover plate (220) are respectively provided with the connecting groups.

5. A hydrogen-producing insulation structure according to claim 4, wherein: The surface of the connecting part (110) on the outer side of the polar plate (100) is provided with a reinforcing rib (113).

6. A hydrogen-producing insulating structure according to claim 5, wherein: The side wall of the receiving groove (211) is provided with a positioning boss (213), and the connecting part (110) abuts against the positioning boss (213).

7. The hydrogen-producing insulating structure of claim 2, wherein: The side, away from the polar plate (100), of the reinforcing rib (113) is provided with a positioning convex tooth (114), the position opposite to the positioning convex tooth (114) of the positioning boss (213) is provided with a positioning groove (215), and the positioning convex tooth (114) is connected with the positioning groove (215) in a matched mode.

8. The hydrogen-producing insulating structure of claim 7, wherein: The application further relates to a hydrogen production insulation structure comprising any one of the hydrogen production insulation structures according to claims 1 to 9.

9. A hydrogen-producing insulating structure according to claim 8, wherein: ​ 10. An electrolytic cell characterized by: ​

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