Integrated water electrolysis hydrogen production galvanic pile structure

Abstract

The invention discloses an integrated water electrolysis hydrogen production galvanic pile structure which comprises a left end plate, a supporting framework, a right end plate and an electrode assembly, and the left end plate, the supporting framework and the right end plate are sequentially welded into a whole from left to right; and electrode assemblies are embedded between the left end plate and the supporting framework and between the right end plate and the supporting framework. According to the invention, integration, high strength and high reliability of the stack structure can be realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of stack structure, more particularly to an integrated electrolytic water hydrogen production stack structure. BACKGROUND

[0002] As the core unit in the electrolytic water hydrogen production system, the structure design and sealing performance of the stack directly relate to the operation safety, reaction efficiency and service life of the equipment.

[0003] In the prior art, the stack structure generally adopts a split assembly form, which is mainly composed of multiple components such as polar plates, sealing rings, support plates, clamping devices, etc., and is fixed by external bolts or clamps. However, there are the following defects:

[0004] 1) The components are connected by mechanical means, and during long-term operation, thermal expansion and contraction, stress relaxation or vibration disturbance can cause the connection to loosen, resulting in problems such as displacement of the sealing ring, structural misalignment, and joint cracking, ultimately causing the stack to leak gas and liquid, and in severe cases, causing the system to shut down or safety accidents;

[0005] 2) Since the polar plates, support members and frames are generally independent machined parts, their assembly accuracy depends on manual operation and external clamping force control, making it difficult to ensure batch consistency and high-precision sealing, especially under high pressure or high flow conditions, the sealing structure is prone to local failure, which is a key weak point affecting the long-term stability of the system;

[0006] 3) In terms of current lead-out, the traditional structure generally uses the method of welding or pressing the tab on the edge of the polar plate to connect the busbar. On the one hand, the welding heat affected zone is prone to cause local softening, deformation or micro-cracks in the material, reducing the connection strength and conductivity of the tab. On the other hand, the contact resistance in the connection area is large, causing local heating, which further damages the sealing layer or the edge structure of the polar plate. Finally, the mechanical pressing method has poor reliability and is prone to looseness or falling due to thermal expansion or external stress.

[0007] Therefore, it is an urgent problem for those skilled in the art to provide a reliable integrated electrolytic water hydrogen production stack structure. SUMMARY

[0008] Therefore, the present application provides an integrated electrolytic water hydrogen production stack structure to solve the problems of poor sealing performance, unstable structure connection and unstable current lead-out in existing stacks.

[0009] To achieve the above purpose, the present application adopts the following technical solutions:

[0010] The application discloses an integrated electrolytic water hydrogen production cell structure which comprises a left end plate, a support framework, a right end plate and an electrode assembly, wherein the left end plate, the support framework and the right end plate are sequentially welded into an integrated whole from left to right; and the electrode assembly is embedded and installed between the left end plate and the support framework and between the right end plate and the support framework.

[0011] By adopting the above technical scheme, the application has the following beneficial effects:

[0012] The integrated, high-strength and high-reliability of the cell structure are achieved.

[0013] Further, the front side of the left end plate is provided with a first alkali liquid inlet; the inner side of the left end plate is provided with a left flow groove and a first alkali liquid inlet groove which is in communication with the left flow groove, and the first alkali liquid inlet is in communication with the first alkali liquid inlet groove; the front side of the right end plate is provided with a second alkali liquid inlet; the inner side of the right end plate is provided with a right flow groove and a second alkali liquid inlet groove which is in communication with the right flow groove, and the second alkali liquid inlet is in communication with the second alkali liquid inlet groove.

[0014] Further, the front side of the left end plate is provided with an oxygen side gas-liquid outlet which is located above the first alkali liquid inlet; the inner side of the left end plate is provided with an oxygen side gas-liquid drainage groove hole which is in communication with the left flow groove, and the oxygen side gas-liquid drainage groove hole and the first alkali liquid inlet groove are respectively located on the upper and lower sides of the left flow groove, and the oxygen side gas-liquid outlet is in communication with the oxygen side gas-liquid drainage groove hole; the front side of the right end plate is provided with a hydrogen side gas-liquid outlet which is located above the second alkali liquid inlet; the inner side of the right end plate is provided with a hydrogen side gas-liquid drainage groove hole which is in communication with the right flow groove, and the hydrogen side gas-liquid drainage groove hole and the second alkali liquid inlet groove are respectively located on the upper and lower sides of the right flow groove, and the hydrogen side gas-liquid outlet is in communication with the hydrogen side gas-liquid drainage groove hole.

[0015] Further, the left flow groove and the right flow groove are both V-shaped.

[0016] Further, the front side of the left end plate is provided with a left tab mounting groove which extends to the left flow groove; a left tab is hot-pressed and embedded into the left tab mounting groove; the front side of the right end plate is provided with a right tab mounting groove which extends to the right flow groove; and a right tab is hot-pressed and embedded into the right tab mounting groove.

[0017] Further, the support framework comprises a left middle plate, a carbon steel plate and a right middle plate welded in sequence from left to right to form a left middle flow groove and a right middle flow groove; a left hot melt connecting groove is opened on the outer periphery of the left flow groove on the inner side of the left end plate, and a left convex melt body is arranged in the middle of the left hot melt connecting groove; a right hot melt connecting groove is opened on the outer periphery of the right flow groove on the inner side of the right end plate, and a right convex melt body is arranged in the middle of the right hot melt connecting groove; the left middle plate has a left V-shaped hole, the left side of the left middle plate has a first hot melt connecting groove, the right side of the left middle plate has a second hot melt connecting groove, and the first hot melt connecting groove and the second hot melt connecting groove are both located on the outer periphery of the left V-shaped hole; a first convex melt body is arranged in the middle of the first hot melt connecting groove, and a second convex melt body is arranged in the middle of the second hot melt connecting groove; the first convex melt body is hot melt connected with the left convex melt body; the right middle plate has a right V-shaped hole corresponding to the left V-shaped hole, the left side of the right middle plate has a third hot melt connecting groove, the right side of the right middle plate has a fourth hot melt connecting groove, and the third hot melt connecting groove and the fourth hot melt connecting groove are both located on the outer periphery of the right V-shaped hole; a third convex melt body is arranged in the middle of the third hot melt connecting groove, and a fourth convex melt body is arranged in the middle of the fourth hot melt connecting groove; the third convex melt body is hot melt connected with the second convex melt body; the fourth convex melt body is hot melt connected with the right convex melt body; the electrode assembly is embedded and installed between the left flow groove and the left middle flow groove, and between the right flow groove and the right middle flow groove.

[0018] Further, the left middle plate has a first flow-through hole and a second flow-through hole distributed in front and back, the left side of the left middle plate has a hydrogen side gas-liquid guide groove for the second flow-through hole to communicate with the left V-shaped hole, and the second flow-through hole corresponds to and communicates with the hydrogen side gas-liquid guide groove hole position; the right middle plate has a third flow-through hole and a fourth flow-through hole distributed in front and back, the third flow-through hole corresponds to the first flow-through hole, and the fourth flow-through hole corresponds to the second flow-through hole; the right side of the right middle plate has an oxygen side gas-liquid guide groove for the third flow-through hole to communicate with the right V-shaped hole, and the third flow-through hole corresponds to and communicates with the oxygen side gas-liquid guide groove hole position.

[0019] Further, the electrode assembly comprises a first net-shaped support plate, a left electrode, a diaphragm, a right electrode and a second net-shaped support plate closely fitted in sequence from left to right.

[0020] Further, the number of support frameworks is multiple, and the number of electrode assemblies is multiple, and each of the support frameworks is provided with two electrode assemblies on both sides.

[0021] Therefore, the application provides a one-piece water electrolysis hydrogen production electric pile structure, and has the following beneficial effects compared with the prior art.

[0022] (1) Significantly improve the sealing performance: the end plate and the intermediate polar plate are welded into one body through the relative joint of the convex welding body, completely eliminating the sealing gap and misalignment problem in the traditional bolt compression structure, significantly improving the overall air tightness and structural stability of the electric pile, and being particularly suitable for harsh working environments such as high pressure and high flow;

[0023] (2) Enhance the mechanical strength and assembly consistency: the carbon steel is integrally fused with the intermediate polar plate, thereby enhancing the compression resistance and deformation resistance of the electric pile body, and avoiding the structural error caused by position deviation during assembly of the traditional split assembly, and having higher batch manufacturing consistency;

[0024] (3) Improve the electrical connection stability and conductivity efficiency: the high-temperature embedded tab technology is adopted to embed the conductive tab into the inside of the end plate structure, thereby forming a stable electrical connection interface, and compared with the traditional external welding or crimping method, the contact resistance is lower, the thermal shock resistance is stronger, and the local heating and sealing damage problems caused by virtual welding or falling are avoided;

[0025] (4) Optimize the structural compactness and module integration: the one-piece forming structure reduces the number of electric pile components and simplifies the assembly process, is conducive to modular packaging and automated production, improves system integration efficiency and reliability, and reduces manufacturing cost. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only embodiments of the application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of the provided drawings.

[0027] Figure 1 The accompanying drawings are schematic diagrams of the overall structure of the one-piece water electrolysis hydrogen production electric pile structure provided by the application.

[0028] Figure 2 The accompanying drawings are schematic diagrams of the overall structure of the one-piece water electrolysis hydrogen production electric pile structure provided by the application.

[0029] Figure 3 The accompanying drawings are schematic diagrams of the overall structure of the one-piece water electrolysis hydrogen production electric pile structure provided by the application.

[0030] Figure 4 The accompanying drawings are schematic diagrams of the overall structure of the one-piece water electrolysis hydrogen production electric pile structure provided by the application.

[0031] Figure 5 The drawing is a structural schematic diagram of a left end plate provided by the present application;

[0032] Figure 6 The drawing is a structural schematic diagram of a left intermediate plate provided by the present application;

[0033] Figure 7 The drawing is a structural schematic diagram of another view of the left intermediate plate provided by the present application;

[0034] Figure 8 The drawing is a structural schematic diagram of a right intermediate plate provided by the present application;

[0035] Figure 9 The drawing is a structural schematic diagram of another view of the right intermediate plate provided by the present application. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0037] As shown in the drawings, Figures 1-9 The embodiments of the present application disclose an integrated electrolytic water hydrogen production stack structure, which comprises a left end plate 1, a support framework 2, a right end plate 3 and an electrode assembly 4. The left end plate 1, the support framework 2 and the right end plate 3 are sequentially welded into an integrated body from left to right, used for bearing the electrode assembly 4 and constructing a stack reaction zone. In the present embodiment, the welding adopts a hot plate welding or ultrasonic welding process, the fusion boundary is tight, and the overall air tightness and mechanical strength are effectively improved. The electrode assembly 4 is embedded and installed between the left end plate 1 and the support framework 2, and between the right end plate 3 and the support framework 2. The present application can realize integration, high strength and high reliability of the stack structure.

[0038] Specifically, the front side of the left end plate 1 has a first alkali liquid inlet 11; the inner side of the left end plate 1 has a left flow groove 12 and a first alkali liquid inlet groove hole 13 communicated with the left flow groove 12, and the first alkali liquid inlet 11 is communicated with the first alkali liquid inlet groove hole 13; the front side of the right end plate 3 has a second alkali liquid inlet 31; the inner side of the right end plate 3 has a right flow groove 32 and a second alkali liquid inlet groove hole communicated with the right flow groove 32, and the second alkali liquid inlet 31 is communicated with the second alkali liquid inlet groove hole. The left end plate 1 and the right end plate 3 both have alkali liquid inlets, realizing symmetrical liquid inlet at both ends, which helps to improve the uniformity of internal electrolyte distribution and avoid local dryness or concentration polarization.

[0039] Specifically, the front side of the left end plate 1 has an oxygen side gas-liquid outlet 14 located above the first alkali liquid inlet 11 for discharging the mixture of oxygen generated on the anode side and residual electrolyte; the inner side of the left end plate 1 has an oxygen side gas-liquid drainage groove hole 15 in communication with the left flow groove 12, the oxygen side gas-liquid drainage groove hole 15 and the first alkali liquid inlet groove hole 13 being located on the upper and lower sides of the left flow groove 12 respectively, and the oxygen side gas-liquid outlet 14 being in communication with the oxygen side gas-liquid drainage groove hole 15; the front side of the right end plate 3 has a hydrogen side gas-liquid outlet 33 located above the second alkali liquid inlet 31 for discharging the mixture of hydrogen generated on the cathode side and electrolyte; and the inner side of the right end plate 3 has a hydrogen side gas-liquid drainage groove hole 34 in communication with the right flow groove 32, the hydrogen side gas-liquid drainage groove hole 34 and the second alkali liquid inlet groove hole being located on the upper and lower sides of the right flow groove 32 respectively, and the hydrogen side gas-liquid outlet 33 being in communication with the hydrogen side gas-liquid drainage groove hole 34.

[0040] In order to further optimize the technical scheme of the present application, the left flow groove 12 and the right flow groove 32 are both V-shaped, and the flow of fluid along the V-shaped path during the electrolysis process is optimized by the optimized design of the geometric shape of the flow groove, so that the flow resistance and flow field unevenness are effectively reduced, the formation of dead angles and stagnant zones is avoided, and the efficiency and stability of the electrolysis reaction are significantly improved.

[0041] Specifically, the front side of the left end plate 1 has a left tab mounting groove 16 extending to the left flow groove 12 in the middle part thereof for stably leading the conductive tabs inside the stack to the external circuit; the left tab 5 is hot-pressed and embedded in the left tab mounting groove 16; the front side of the right end plate 3 has a right tab mounting groove 35 extending to the right flow groove 32 in the middle part thereof; and the right tab 6 is hot-pressed and embedded in the right tab mounting groove 35. That is, the tabs are pressed into the tab mounting grooves in a heated state to realize the structural close combination and low contact resistance connection, and to avoid the problems of virtual welding or poor contact caused by traditional welding. In the embodiment, the tab material is selected to be high-conductivity copper alloy, and through the local induction heating-embedding-cooling fixation process, a structurally stable connection groove is formed at the edge of the plate, which effectively improves the connection strength and corrosion resistance.

[0042] Of course, the tabs between the modules are connected to the busbars through insulating pressing plates to realize series or parallel operation, and to improve the flexibility and maintainability of the system.

[0043] Specifically, the support framework 2 comprises the left middle polar plate 21, the carbon steel plate 22 and the right middle polar plate 23 welded in sequence from left to right to form the left middle flow groove and the right middle flow groove; the inner side surface of the left end plate 1 is provided with the left hot melt connecting groove 17 at the periphery of the left flow groove 12, and the middle part of the left hot melt connecting groove 17 is provided with the left convex melt body 171; the inner side surface of the right end plate 3 is provided with the right hot melt connecting groove at the periphery of the right flow groove 32, and the middle part of the right hot melt connecting groove is provided with the right convex melt body; the left middle polar plate 21 is provided with the left V-shaped hole 211, the left side surface of the left middle polar plate 21 is provided with the first hot melt connecting groove 212, the right side surface of the left middle polar plate 21 is provided with the second hot melt connecting groove 213, and the first hot melt connecting groove 212 and the second hot melt connecting groove 213 are located at the periphery of the left V-shaped hole 211; the middle part of the first hot melt connecting groove 212 is provided with the first convex melt body 2121, and the middle part of the second hot melt connecting groove 213 is provided with the second convex melt body 2131; the first convex melt body 2121 is hot melt connected with the left convex melt body 171; the left middle polar plate 21 is provided with the lye flow groove hole communicated with the left V-shaped hole 211 and corresponding to the position of the first lye inlet groove hole 13, of course, the first lye inlet groove hole 13 and the second lye inlet groove hole correspond to each other; the right middle polar plate 23 is provided with the right V-shaped hole 231 corresponding to the left V-shaped hole 211, the left side surface of the right middle polar plate 23 is provided with the third hot melt connecting groove 232, the right side surface of the right middle polar plate 23 is provided with the fourth hot melt connecting groove 233, and the third hot melt connecting groove 232 and the fourth hot melt connecting groove 233 are located at the periphery of the right V-shaped hole 231; the middle part of the third hot melt connecting groove 232 is provided with the third convex melt body 2321, and the middle part of the fourth hot melt connecting groove 233 is provided with the fourth convex melt body 2331; the third convex melt body 2321 is hot melt connected with the second convex melt body 2131; the fourth convex melt body 2331 is hot melt connected with the right convex melt body; the right middle polar plate 23 is provided with the lye flow groove hole communicated with the right V-shaped hole 231 and corresponding to the position of the second lye inlet groove hole. That is, the positions of the convex melt bodies correspond to each other to ensure the accurate butt joint position; the electrode assembly 4 is embedded and installed between the left flow groove 12 and the left middle flow groove, and between the right flow groove 32 and the right middle flow groove. The hot melt connecting groove is used for the melt entering after the excess part of the convex melt body is hot melt connected.

[0044] Specifically, the left middle polar plate 21 has first flow-through holes 214 and second flow-through holes 215 distributed in front and back on the upper side, and the left side of the left middle polar plate 21 has a hydrogen-side gas-liquid guide groove 216 for the second flow-through holes 215 to communicate with the left V-shaped hole 211, and the second flow-through holes 215 correspond to and communicate with the hydrogen-side gas-liquid guide groove hole 34; the right middle polar plate 23 has third flow-through holes 234 and fourth flow-through holes 235 distributed in front and back on the upper side, the third flow-through holes 234 correspond to the first flow-through holes 214, and the fourth flow-through holes 235 correspond to the second flow-through holes 215; the right side of the right middle polar plate 23 has an oxygen-side gas-liquid guide groove 236 for the third flow-through holes 234 to communicate with the right V-shaped hole 231, and the third flow-through holes 234 correspond to and communicate with the oxygen-side gas-liquid guide groove hole 15. In operation, the electrolyte (such as KOH solution) enters through the alkali inlet, flows through the anode and cathode reaction zones respectively, and completes the water electrolysis reaction on both sides of the diaphragm 43, the generated hydrogen enters the second flow-through holes 215 through the hydrogen-side gas-liquid guide groove 216, then enters the hydrogen-side gas-liquid guide groove hole 34 through the fourth flow-through holes 235, and is discharged from the hydrogen-side gas-liquid outlet 33, and the generated oxygen enters the third flow-through holes 234 through the oxygen-side gas-liquid guide groove 236, then enters the oxygen-side gas-liquid guide groove hole 15 through the first flow-through holes 214, and is discharged from the oxygen-side gas-liquid outlet 14.

[0045] Specifically, the electrode assembly 4 includes a first mesh support plate 41, a left electrode 42, a diaphragm 43, a right electrode 44 and a second mesh support plate 45 which are sequentially and closely attached from left to right, wherein the diaphragm 43 is used to isolate the anode and cathode gas channels of the stack while allowing ion migration; the carbon steel plate 22 is used to support the mesh support plate and conduct electricity; the mesh support plate is used to support the electrode, conduct electricity and guide liquid; the left electrode 42 and the right electrode 44 are made of high-conductivity and corrosion-resistant materials to ensure stability and efficiency during long-term operation.

[0046] Specifically, the number of support skeletons 2 is multiple, and the number of electrode assemblies 4 is multiple, and each support skeleton 2 has two electrode assemblies 4 on both sides, that is, the number of electrode assemblies 4 can be increased according to demand, and is suitable for high-power water electrolysis systems.

[0047] The embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other.

[0048] The foregoing description of the disclosed embodiments enables a person skilled in the art to make or use the application. Modifications of these embodiments will occur to persons of skill in the art, and that the appended claims are intended to cover all such modifications that do not depart from the true spirit and scope of the application. Therefore, the application is not limited to the embodiments shown but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An integrated water electrolysis hydrogen production fuel cell stack structure, characterized in that, The electrode assembly is embedded and installed between the left end plate and the support framework and between the right end plate and the support framework.

2. The integrated electrolytic hydrogen generator stack structure according to claim 1, wherein The front side of the left end plate is provided with a first lye inlet; the inner side of the left end plate is provided with a left flow groove and a first lye inlet groove in communication with the left flow groove, and the first lye inlet is in communication with the first lye inlet groove; the front side of the right end plate is provided with a second lye inlet; the inner side of the right end plate is provided with a right flow groove and a second lye inlet groove in communication with the right flow groove, and the second lye inlet is in communication with the second lye inlet groove.

3. The integrated electrolytic hydrogen generator structure of claim 2, wherein, The front side of the left end plate is provided with an oxygen side gas-liquid outlet above the first lye inlet; the inner side of the left end plate is provided with an oxygen side gas-liquid drainage groove in communication with the left flow groove, and the oxygen side gas-liquid drainage groove and the first lye inlet groove are respectively located on the upper and lower sides of the left flow groove, and the oxygen side gas-liquid outlet is in communication with the oxygen side gas-liquid drainage groove; the front side of the right end plate is provided with a hydrogen side gas-liquid outlet above the second lye inlet; the inner side of the right end plate is provided with a hydrogen side gas-liquid drainage groove in communication with the right flow groove, and the hydrogen side gas-liquid drainage groove and the second lye inlet groove are respectively located on the upper and lower sides of the right flow groove, and the hydrogen side gas-liquid outlet is in communication with the hydrogen side gas-liquid drainage groove.

4. The integrated electrolytic hydrogen generator stack structure according to claim 2, wherein The left flow groove and the right flow groove are both V-shaped.

5. The integrated electrolytic hydrogen generator stack structure according to claim 2, wherein The front side of the left end plate is provided with a left lug mounting groove extending to the left flow groove; a left lug is hot-pressed and embedded in the left lug mounting groove; the front side of the right end plate is provided with a right lug mounting groove extending to the right flow groove; a right lug is hot-pressed and embedded in the right lug mounting groove.

6. The integrated electrolytic hydrogen generator stack structure according to claim 3, wherein The support framework comprises a left intermediate plate, a carbon steel plate and a right intermediate plate welded in sequence from left to right to form a left intermediate flow groove and a right intermediate flow groove; a left hot melt connecting groove is formed on the outer periphery of the left flow groove on the inner side of the left end plate, and a left convex melt body is arranged in the middle of the left hot melt connecting groove; a right hot melt connecting groove is formed on the outer periphery of the right flow groove on the inner side of the right end plate, and a right convex melt body is arranged in the middle of the right hot melt connecting groove; the left intermediate plate has a left V-shaped hole, the left side of the left intermediate plate has a first hot melt connecting groove, the right side of the left intermediate plate has a second hot melt connecting groove, and the first hot melt connecting groove and the second hot melt connecting groove are both located on the outer periphery of the left V-shaped hole; a first convex melt body is arranged in the middle of the first hot melt connecting groove, and a second convex melt body is arranged in the middle of the second hot melt connecting groove; the first convex melt body is hot melt connected with the left convex melt body; the right intermediate plate has a right V-shaped hole corresponding to the left V-shaped hole, the left side of the right intermediate plate has a third hot melt connecting groove, the right side of the right intermediate plate has a fourth hot melt connecting groove, and the third hot melt connecting groove and the fourth hot melt connecting groove are both located on the outer periphery of the right V-shaped hole; a third convex melt body is arranged in the middle of the third hot melt connecting groove, and a fourth convex melt body is arranged in the middle of the fourth hot melt connecting groove; the third convex melt body is hot melt connected with the second convex melt body; the fourth convex melt body is hot melt connected with the right convex melt body; the electrode assembly is embedded and installed between the left flow groove and the left intermediate flow groove and between the right flow groove and the right intermediate flow groove.

7. The integrated electrolytic hydrogen generator stack structure according to claim 6, wherein The upper side of the left intermediate plate has first and second flow-through holes distributed in front and back, the left side of the left intermediate plate has a hydrogen-side gas-liquid guide groove for the communication of the second flow-through hole and the left V-shaped hole, and the second flow-through hole is in position correspondence and communication with the hydrogen-side gas-liquid guide groove hole; the upper side of the right intermediate plate has third and fourth flow-through holes distributed in front and back, the third flow-through hole is in position correspondence with the first flow-through hole, and the fourth flow-through hole is in position correspondence with the second flow-through hole; the right side of the right intermediate plate has an oxygen-side gas-liquid guide groove for the communication of the third flow-through hole and the right V-shaped hole, and the third flow-through hole is in position correspondence and communication with the oxygen-side gas-liquid guide groove hole.

8. The integrated electrolytic hydrogen generator stack structure according to claim 6, wherein The electrode assembly comprises a first net-shaped support plate, a left electrode, a diaphragm, a right electrode and a second net-shaped support plate closely fitted in sequence from left to right.

9. The integrated electrolytic hydrogen generator stack structure of claim 1, wherein, The number of the support frameworks is multiple, and the number of the electrode assemblies is multiple, and each of the support frameworks is provided with two electrode assemblies on both sides.

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