Electrolysis chamber and manufacturing method thereof

Abstract

The invention discloses an electrolysis chamber and a manufacturing method thereof. The electrolysis chamber is characterized in that two end plates are respectively provided with a mounting groove; a diaphragm for electrolysis is clamped between the two end plates in a sealing manner and covers the groove openings of the two mounting grooves at the same time; a mastoid plate with a bulge is embedded in the mounting groove and is electrically connected with an external power supply; the electrode plate is embedded in the mounting groove and located between the mastoid plate and the electrolysis diaphragm, and the protrusions abut against the plate face of the electrode plate and are electrically connected with the plate face of the electrode plate; an annular bulge is arranged on the plate surface of one end plate, an annular groove is formed in the plate surface of the other end plate, and the annular bulge can be embedded and fixed in the annular groove; and the mounting groove and the diaphragm for electrolysis are limited in an area defined by the annular groove. The structure is simple and reliable, the electrolysis process is stable, and the sealing performance of fixed connection of the two end plates can be improved through the arrangement of the annular protrusion and the annular groove; and meanwhile, the annular bulge and the annular groove can also play a role in positioning, and the two end plates can be accurately aligned when fixedly connected.

Description

Technical Field

[0001] The present invention relates to the field of hydrogen production by electrolysis, and more particularly to an electrolysis chamber. Background Art

[0002] In the current processing technology system of alkaline electrolysis cells, the sealing method combining bolt connection and sealing ring dominates. From the perspective of actual production, this traditional method is extremely cumbersome in the assembly process. In the production workshop of large-scale water electrolysis hydrogen production equipment, assembly workers need to spend a lot of time installing bolts one by one, placing and adjusting the sealing rings to ensure the sealing effect. This not only requires a large number of human resources, but also significantly extends the production cycle, directly resulting in a substantial increase in production costs.

[0003] During the long-term operation process, the sealing ring is continuously exposed to the chemical erosion environment of the alkaline electrolyte, and at the same time, it bears the temperature fluctuation and internal pressure during the electrolysis process. Taking a certain traditional alkaline electrolyzer as an example, after a period of operation, obvious aging signs of the sealing ring appear, such as hardening of the material, reduction of elasticity, and even deformation. This causes gaps in the sealed part, leading to serious gas leakage problems, resulting in pressure imbalance in the electrolyzer, and then causing drastic fluctuations in the electrolysis efficiency, seriously affecting the output and quality of water electrolysis hydrogen production, and at the same time greatly reducing the overall stability and service life of the equipment, becoming a key bottleneck for the further development of water electrolysis hydrogen production technology.

[0004] At the same time, the installation groove on the existing end plate has a simple structure, but during the hydrogen production process, the electrolyte cannot be evenly distributed in the installation groove, resulting in too high or too low local electrolyte concentration. Bubbles are likely to adhere and accumulate on the surface of the electrode plate, and the retention of bubbles will increase the system resistance, thereby reducing the electrolysis efficiency.

[0005] Therefore, how to provide an electrolysis chamber and its manufacturing method to overcome the above problems is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0006] In view of this, the present invention provides an electrolysis chamber.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] An electrolysis chamber includes end plates, an electrolysis diaphragm, papillary plates, and electrode plates. There are two end plates, and on one side surface of each end plate, there is an installation groove communicating with the liquid outlet and liquid inlet of an external electrolyte supply source; an electrolysis diaphragm is hermetically clamped between the two end plates, and the electrolysis diaphragm simultaneously hermetically covers the openings of the two installation grooves; there are two papillary plates, each of which is embedded in one of the two installation grooves, and one side surface of each papillary plate has a plurality of protrusions, and the two papillary plates are respectively electrically connected to the two output terminals of an external power source; there are two electrode plates, each of which is embedded in one of the two installation grooves, the electrode plates are located between the papillary plates and the electrolysis diaphragm, and the protrusions are in contact with and electrically conduct with the surfaces of the electrode plates; on one side surface of one end plate where the installation groove is provided, there is an annular protrusion integrally formed, and on one side surface of the other end plate where the installation groove is provided, there is an annular groove integrally formed, and the annular protrusion can be embedded and fixed in the annular groove; the installation groove and the electrolysis diaphragm are both limited within the area surrounded by the annular groove.

[0009] Through the above technical solutions, it can be seen that compared with the prior art, the present invention discloses an electrolysis chamber. The electrolysis chamber involved in the present invention has a simple structure and a stable electrolysis process, and both the hydrogen production efficiency and the hydrogen production purity are relatively high; by providing an annular protrusion and an annular groove on the end plate, and both the installation groove and the electrolysis diaphragm are limited within the area surrounded by the annular groove, this design can improve the sealing performance of the connection between the two end plates and ensure that the electrolyte in the installation groove does not leak out between the two end plates; at the same time, the annular protrusion and the annular groove can also play a positioning role, enabling accurate alignment when the two end plates are connected.

[0010] Preferably, the projection of one end wall of the installation groove along the plate thickness direction of the end plate is V-shaped, and the shapes of the surfaces of the papillary plates and the electrode plates are the same as the shape of the installation groove. This design effectively avoids the phenomenon of too high or too low local electrolyte concentration in the installation groove, and the bubbles can quickly escape from the bottom of the V-shaped installation groove, greatly reducing the adhesion and aggregation of bubbles on the surface of the electrode plate, effectively reducing the problem of increased resistance caused by bubble retention, and thus significantly improving the electrolysis efficiency.

[0011] Preferably, the end plate is provided with a liquid inlet channel and a liquid outlet channel both communicating with the installation groove. The end of the liquid inlet channel far from the installation groove and the end of the liquid outlet channel far from the installation groove are respectively communicated with the liquid outlet and liquid inlet of an external electrolyte supply source; on the bottom wall of the installation groove, there are a first groove and a second groove, the first groove and the second groove are respectively arranged close to the two end walls of the installation groove, and the center line in the groove length direction of the second groove is V-shaped. One end of the liquid inlet channel penetrates the side wall of the first groove, and one end of the liquid outlet channel penetrates the side wall of the second groove. The electrolyte can flow smoothly in the installation groove, the electrolyte can be evenly arranged in the installation groove, and the gas generated during the electrolysis process can be discharged smoothly and quickly from the second groove.

[0012] Preferably, each end plate is provided with an opening and hermetically inserted with a wiring component. One end of each of the two wiring components abuts against the two papillary plates respectively and is electrically connected. The other ends of the two wiring components are respectively electrically connected to the two output terminals of an external power supply. The papillary plate can be reliably electrically connected to the external power supply.

[0013] Preferably, the cross-sections of both the annular protrusion and the annular groove are V-shaped. The annular protrusion and the annular groove can achieve a reliable sealed connection.

[0014] Preferably, a plurality of annular protrusions are provided and arranged coaxially, and the number of annular protrusions is the same as that of the annular grooves. The plurality of annular protrusions can improve the sealing performance of the connection between the two end plates.

[0015] A manufacturing method of an electrolytic cell, using the above-mentioned electrolytic cell, the method includes the following steps:

[0016] ① Clean and dry the end plates;

[0017] ② Install the end plates, the electrolytic diaphragm, the papillary plates and the electrode plates in place, and embed the annular protrusions in the annular grooves;

[0018] ③ Place the end plates, the electrolytic diaphragm, the papillary plates and the electrode plates assembled in step ② on an ultrasonic welding machine, and then perform ultrasonic welding on the two end plates;

[0019] ④ Conduct appearance quality inspection and sealing performance test on the welds of the two end plates welded together.

[0020] Through the above technical solutions, compared with the prior art, the present invention discloses a manufacturing method of an electrolytic cell.

[0021] Preferably, in step ①, first place the end plates in a container filled with degreasing agent for degreasing and cleaning, then place the degreased end plates in an ultrasonic cleaning machine for cleaning, and finally place the cleaned end plates in a drying oven for drying. The end plates can be degreased and thoroughly cleaned before welding, ensuring reliable welding of the end plates.

[0022] Preferably, in step ④, observe the welds of the two end plates using an optical microscope. The operator can use the optical microscope to thoroughly inspect the welds of the two end plates to ensure that there are no defects such as cracks, holes, and lack of fusion at the welding parts of the two end plates.

[0023] Preferably, in step ④, inflate the installation grooves on the two end plates fixed together, block them after the inflation of the installation grooves is completed, and monitor the change in air pressure in the installation grooves within a set time period. Judge whether the sealing performance of the two welded end plates is good according to the attenuation degree of the air pressure in the installation grooves. This detection method has high accuracy and is simple. Description of the Drawings

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings.

[0025] Figure 1 is an exploded axonometric view of an electrolytic cell Figure 1 ;

[0026] Figure 2 is an exploded axonometric view of an electrolytic cell Figure 2 ;

[0027] Figure 3 is a schematic diagram of an electrolytic cell after explosion;

[0028] Figure 4 is an axonometric view of an end plate with a ring-shaped protrusion provided in an electrolytic cell;

[0029] Figure 5 is an axonometric view of an end plate with a ring-shaped groove provided in an electrolytic cell;

[0030] Figure 6 is an axonometric sectional view of an end plate of an electrolytic cell.

[0031] In the figure:

[0032] 1 is the end plate, 10 is the installation groove, 11 is the ring-shaped protrusion, 12 is the ring-shaped groove, 13 is the liquid inlet channel, 14 is the liquid outlet channel, 15 is the first groove, 16 is the second groove, 17 is the relief groove, 2 is the electrolytic diaphragm, 3 is the papillary plate, 30 is the protrusion, and 4 is the electrode plate. Detailed implementation manners

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0034] The present invention discloses an electrolytic cell and a manufacturing method thereof. The present invention sets a ring-shaped protrusion 11 and a ring-shaped groove 12 on the end plate 1, and both the installation groove 10 and the electrolytic diaphragm 2 are limited within the area surrounded by the ring-shaped groove 12. This design can improve the sealing performance of the fixed connection of the two end plates 1 and ensure that the electrolyte in the installation groove 10 will not leak out between the two end plates 1; at the same time, the ring-shaped protrusion 11 and the ring-shaped groove 12 can also play a positioning role, enabling the two end plates 1 to be accurately aligned when fixedly connected;

[0035] In the present invention, the projection of one end wall of the installation groove 10 along the plate thickness direction of the end plate 1 is V-shaped. The purpose of this design is to ensure that during the electrolysis process, the above-mentioned structural form can guide the electrolyte to form a more uniform distribution trend, effectively avoiding the phenomenon of too high or too low local electrolyte concentration in the installation groove 10, ensuring that the electrolysis reaction can proceed efficiently and stably in each area between the electrode plates 4. At the same time, this structure provides a smooth discharge channel for the bubbles, and the bubbles can quickly escape from the bottom of the V shape, greatly reducing the adhesion and aggregation of the bubbles on the surface of the electrode plate 4, effectively reducing the problem of increased resistance caused by bubble retention, thereby significantly improving the electrolysis efficiency;

[0036] In the present invention, the two end plates 1 are fixed together by ultrasonic welding. The working principle of ultrasonic welding is based on the heat effect generated by high-frequency vibration. When the ultrasonic vibration acts on the end plate 1, the contact surfaces of the two end plates 1 can rub violently and quickly generate heat, melting the contact surfaces between the end plate 1 and the end plate 1. Along with the pressure exerted by the ultrasonic welding machine on the two end plates 1, the two end plates 1 can form a firm and reliable sealed connection;

[0037] The fixed connection method of the two end plates 1 is simple and reliable, eliminating the assembly of existing bolts and sealing washers, reducing the assembly process, and improving the assembly efficiency;

[0038] The size specification of the electrolysis chamber in this application is small, that is, the plate area of the end plate 1 is small. The electrolysis chamber in this application is a disposable structure, that is, the disassembly, installation, and maintenance of the end plate 1 do not need to be considered later. After the electrolysis chamber fails or is damaged, it can be directly discarded and replaced.

[0039] Embodiment

[0040] See the attached Figures 1-6 It is a schematic diagram of the overall and partial structures of an embodiment of the present invention. The present invention specifically discloses an electrolysis chamber, which includes an end plate 1, an electrolysis diaphragm 2, a papillary plate 3, and an electrode plate 4;

[0041] There are two rectangular and transparent end plates 1. The material of the end plate 1 is polypropylene. One side plate surface of the end plate 1 is provided with an installation groove 10 communicated with the liquid outlet and liquid inlet of the external electrolyte supply source. The external electrolyte supply source continuously transports the electrolyte with a certain temperature to the installation groove 10, and the electrolyte in the installation groove 10 flows back to the external electrolyte supply source, that is, the electrolyte circulates in the installation groove 10; in this application, the electrolyte is an alkaline solution, and the external electrolyte supply source is an alkali solution heating box with temperature control and temperature detection functions. The alkali solution heating box can also be electrically connected to an external control system;

[0042] A rectangular electrolytic diaphragm 2 is hermetically clamped between two end plates 1. The electrolytic diaphragm 2 also hermetically covers the openings of the two mounting grooves 10, that is, the electrolytic diaphragm 2 can block the openings of the two mounting grooves 10 at the same time. The electrolytic diaphragm 2 is a prior art. The electrolytic diaphragm 2 can separate the hydrogen and oxygen generated by electrolysis. The electrolytic diaphragm 2 has a microporous structure that allows ions to freely pass through the tortuous and through micropores, ensuring the formation of an internal conductive circuit during migration between the two electrode plates 4. The electrolytic diaphragm 2 in this embodiment is a PPS composite diaphragm;

[0043] There are two conductive papillary plates 3, each of which is embedded in one of the two mounting grooves 10. A plurality of protrusions 30 are integrally formed on one side plate surface of the papillary plate 3 in a uniform manner. The two papillary plates 3 are respectively electrically connected to the two output terminals of an external power source. The design of the protrusions 30 can increase the surface area of the papillary plate 3, improve the activity of the electrochemical reaction, and thus improve the electrolysis reaction rate and efficiency. At the same time, the protrusions 30 can also increase the uniformity of the current density distribution, avoid current concentration and local overheating of the electrolyte, thereby improving the stability and service life of the electrolytic cell;

[0044] The electrode plates 4 are nickel mesh plates. There are two electrode plates 4, each of which is embedded in one of the two mounting grooves 10. The surfaces of the two electrode plates 4 are respectively covered with a conductive cathode catalyst layer and an anode catalyst layer. The plate surface of the electrode plate 4 is parallel to the plate surface of the end plate 1. The electrode plate 4 is located between the papillary plate 3 and the electrolytic diaphragm 2. The protrusions 30 are elastically abutted against the plate surface of the electrode plate 4 and are electrically connected;

[0045] An annular protrusion 11 is integrally formed on one side plate surface of one end plate 1 provided with the mounting groove 10, and an annular groove 12 is integrally formed on one side plate surface of the other end plate 1 provided with the mounting groove 10. The annular protrusion 11 can be embedded and fixed in the annular groove 12. During the subsequent welding of the two end plates 1, the outer wall of the annular protrusion 11 and the groove side wall of the annular groove 12 will melt. At the same time, an ultrasonic welder will apply pressure to the two end plates 1. Therefore, the annular protrusion 11 will be fixed in the annular groove 12;

[0046] The mounting groove 10 and the electrolytic diaphragm 2 are both limited within the area surrounded by the annular groove 12. The design of the annular groove 12 and the annular protrusion 11 ensures that the electrolyte in the mounting groove 10 will not leak out between the two end plates 1, ensuring the connection seal.

[0047] One end wall of the installation groove 10 projects in a V shape in the thickness direction of the end plate 1, and the plate surface shapes of the papillary plate 3 and the electrode plate 4 are the same as the shape of the installation groove 10; the V-shaped design of the installation groove 10 can guide the electrolyte to form a more uniform distribution trend during the electrolysis process, effectively avoiding the phenomenon of too high or too low local electrolyte concentration, ensuring that the electrolysis reaction can proceed efficiently and stably in each area between the electrode plates 4. At the same time, this structure provides a smooth discharge channel for the bubbles, and the bubbles can quickly escape from the bottom of the V shape, greatly reducing the adhesion and aggregation of the bubbles on the surface of the electrode plate 4, effectively reducing the problem of increased resistance caused by bubble retention, thereby significantly improving the electrolysis efficiency.

[0048] The end plate 1 is provided with a liquid inlet channel 13 and a liquid outlet channel 14 both communicating with the installation groove 10. One end of the liquid inlet channel 13 away from the installation groove 10 and one end of the liquid outlet channel 14 away from the installation groove 10 are respectively communicated with the liquid outlet and the liquid inlet of the external electrolyte supply source; the electrolyte can flow smoothly in the installation groove 10, and the electrolyte can be evenly arranged in the installation groove 10.

[0049] The bottom wall of the installation groove 10 is provided with a first groove 15 and a second groove 16. The first groove 15 and the second groove 16 are respectively arranged close to the two end walls of the installation groove 10. The center line in the groove length direction of the second groove 16 is in a V shape. One end of the liquid inlet channel 13 penetrates the side wall of the first groove 15, and one end of the liquid outlet channel 14 penetrates the side wall of the second groove 16. The gas generated during the electrolysis process can be discharged smoothly and quickly from the second groove 16.

[0050] Each end plate 1 is provided with an opening and a metal rod-shaped wiring member (not visible in the figure) is hermetically inserted. A relief groove 17 is respectively opened on the bottom walls of the two installation grooves 10. One end of each of the two wiring members is respectively located in the two relief grooves 17, and the ends of the two wiring members located in the two relief grooves 17 are respectively in tight contact with the two papillary plates 3 and are electrically conducted. The other ends of the two wiring members are respectively electrically connected to the two output ends of the external power supply.

[0051] Further specifically, the cross sections of the annular protrusion 11 and the annular groove 12 are both in a V shape. The two inclined side walls of the annular protrusion 11 can reliably adhere to the two inclined inner side walls of the annular groove 12, which is beneficial to subsequent welding operations and has a good welding effect.

[0052] There are multiple annular protrusions 11 arranged coaxially, and the number of the annular protrusions 11 is the same as the number of the annular grooves 12; the multiple annular protrusions 11 are respectively matched with the multiple annular grooves 12 to further improve the sealing performance of the connection between the two end plates 1.

[0053] A manufacturing method of an electrolysis chamber, the method includes the following steps:

[0054] ① Clean and dry the end plate 1; first, place the end plate 1 in a container filled with degreasing agent for degreasing cleaning, then place the degreased end plate 1 in an ultrasonic cleaner filled with deionized water for cleaning. The cleaning time of the end plate 1 in the ultrasonic cleaner is 20 - 30 minutes. Finally, place the cleaned end plate 1 in a drying oven for drying, with a drying temperature of 60 - 80 °C and a drying time of 1 - 2 hours;

[0055] ② Install the end plate 1, the electrolytic diaphragm 2, the papillary plate 3, and the electrode plate 4 in place, and make the annular protrusion 11 fit into the annular groove 12;

[0056] ③ Place the end plate 1, the electrolytic diaphragm 2, the papillary plate 3, and the electrode plate 4 assembled in step ② on an ultrasonic welding machine, and then perform ultrasonic welding on the two end plates 1; during the welding process, ensure that the plate surface of the end plate 1 is horizontally arranged; during welding, the plate surface of the side of the end plate 1 with the installation groove 10, the outer side wall of the annular protrusion 11, and the inner side wall of the annular groove 12 will all melt. Along with the pressure exerted by the ultrasonic welding machine on the two end plates 1, the two end plates 1 arranged up and down are welded together. The pressure direction of the ultrasonic welding machine on the end plate 1 is perpendicular to the plate surface of the end plate 1;

[0057] ④ Conduct appearance quality inspection and sealing performance test on the weld seam of the two welded end plates 1; for the above-mentioned appearance quality inspection, in this application, an optical microscope is used to observe the weld seam of the two end plates 1 to ensure that there are no defects such as cracks, holes, and lack of fusion at the welding part of the two end plates 1; for the above-mentioned sealing performance test, inflate the installation groove 10 on the two end plates 1 fixed together. After the inflation of the installation groove 10 is completed, block the liquid inlet channel 13 and the liquid outlet channel 14, and at the same time connect a pressure gauge at the liquid inlet channel 13 or the liquid outlet channel 14, and monitor the change of the air pressure in the installation groove 10 within a set time period, and judge whether the sealing performance of the two welded end plates 1 is good according to the degree of air pressure attenuation.

[0058] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.

[0059] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electrolysis chamber, characterized in that: It includes an end plate, an electrolytic diaphragm, a mastoid plate and an electrode plate. There are two end plates. One side of the end plate is provided with a mounting groove connected to the liquid outlet and the liquid inlet of the external electrolyte supply source; the electrolytic diaphragm is sealed and clamped between the two end plates, and the sealing cover of the electrolytic diaphragm is also provided at the groove opening of the two mounting grooves; there are two mastoid plates and each is embedded in the two mounting grooves. One side of the mastoid plate has a plurality of protrusions. The two mastoid plates are respectively electrically connected to the two output ends of the external power supply; there are two electrode plates and each is embedded in the two mounting grooves. The electrode plate is located between the mastoid plate and the electrolytic diaphragm, and the protrusions are in contact with the plate surface of the electrode plate and are electrically conductive; an annular protrusion is integrally formed on the side of the plate surface of one end plate provided with the mounting groove, and an annular groove is integrally formed on the side of the plate surface of the other end plate provided with the mounting groove, and the annular protrusion can be embedded and fixed in the annular groove; the mounting groove and the electrolytic diaphragm are both limited in the area surrounded by the annular groove.

2. An electrolysis chamber according to claim 1, characterized in that: The projection of one end wall of the mounting groove along the plate thickness direction of the end plate is V-shaped, and the plate surface shapes of the mastoid plate and the electrode plate are the same as the shape of the mounting groove.

3. An electrolysis chamber according to claim 2, characterized in that: The end plate is provided with a liquid inlet channel and a liquid outlet channel both connected to the mounting groove, and one end of the liquid inlet channel away from the mounting groove and one end of the liquid outlet channel away from the mounting groove are respectively connected to the liquid outlet and liquid inlet of an external electrolyte supply source; the bottom wall of the mounting groove is provided with groove one and groove two, and groove one and groove two are respectively arranged close to the two end walls of the mounting groove, and the center line of groove two in the groove length direction is V-shaped, one end of the liquid inlet channel penetrates the groove side wall of groove one, and one end of the liquid outlet channel penetrates the groove side wall of groove two.

4. An electrolysis chamber according to claim 1, characterized in that: Each end plate has a hole and a connection piece sealed therein. One end of the two connection pieces abuts against the two mastoid plates and is electrically connected. The other ends of the two connection pieces are electrically connected to the two output ends of the external power supply.

5. An electrolysis chamber according to claim 1, characterized in that: The cross sections of the annular protrusion and the annular groove are both V-shaped.

6. An electrolysis chamber according to claim 1, characterized in that: There are a plurality of annular protrusions which are coaxially arranged, and the number of the annular protrusions is the same as the number of the annular grooves.

7. A method for manufacturing an electrolysis chamber, characterized in that: Using an electrolysis chamber as described in any one of 1 to 6 above, the method comprises the following steps: ① Clean and dry the end plate; ② Install the end plate, electrolysis diaphragm, mastoid plate and electrode plate in place, and fit the annular protrusion into the annular groove; ③ Place the end plate, electrolysis diaphragm, mastoid plate and electrode plate assembled in step ② on an ultrasonic welding machine, and then ultrasonically weld the two end plates; ④ Carry out appearance quality inspection and sealing test on the welds of the two end plates welded together.

8. The method for manufacturing an electrolysis chamber according to claim 7, characterized in that: In step ①, the end plate is first placed in a container containing a degreasing agent for cleaning and degreasing, and then the degreased end plate is placed in an ultrasonic cleaning machine for cleaning, and finally the cleaned end plate is placed in a drying box for drying.

9. The method for manufacturing an electrolysis chamber according to claim 7, characterized in that: In step ④, the welds of the two end plates are observed using an optical microscope.

10. The method for manufacturing an electrolysis chamber according to claim 7, characterized in that: In step ④, the installation grooves on the two end plates fixed together are inflated, and the installation grooves are sealed after the inflation is completed, and the changes in the air pressure in the installation grooves are monitored during a set time period.

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