Electrolytic hydrogen production system

Abstract

The invention discloses an electrolytic hydrogen production system which comprises a hydrogen production module, a total electrolyte tank, a first electrolyte tank and a second electrolyte tank, the hydrogen production module comprises a front end plate and a rear end plate, a plurality of anode plate assemblies and cathode plate assemblies are arranged between the front end plate and the rear end plate at intervals, and meanwhile, the total electrolyte tank is connected with the first electrolyte tank and the second electrolyte tank. A diaphragm piece is arranged between each adjacent anode plate assembly and cathode plate assembly, and the front end plate, the rear end plate, all the anode plate assemblies, all the cathode plate assemblies and all the diaphragm pieces press against one another and are fixedly connected through a plurality of bolts; the electrolyte at the position of the anode plate and the electrolyte at the position of the cathode plate can circularly flow, and the two electrolytes cannot be mixed, so that oxygen and hydrogen in the two electrolytes cannot be mixed, the exhaust purity of the hydrogen and the oxygen is high, the manufacturing is simple, the cost is low, and the application range is wide. A plurality of anode plates and cathode plates are arranged at intervals, so that rapid reaction is realized.

Description

Technical Field

[0001] This invention relates to the field of hydrogen production equipment technology, and more specifically to an electrolytic hydrogen production system. Background Technology

[0002] In existing electrolytic hydrogen production equipment, there is generally only one anode plate and one cathode plate, and its hydrogen production efficiency is relatively low.

[0003] Others employ a bipolar electrolyzer structure, which uses multiple bipolar plates connected in series to improve hydrogen production. However, the anode of these bipolar plates requires iridium (Ir), and the cathode requires platinum (Pt). These metals are extremely rare globally, expensive, and have a fragile supply chain, resulting in high manufacturing costs. Furthermore, the flow channel structure on the bipolar plates is complex and is typically manufactured by stamping, etching, or CNC machining, requiring high precision to ensure uniform distribution of reactants (water) and products (hydrogen / oxygen), further increasing manufacturing costs. In addition, the bipolar plates need to possess high conductivity, corrosion resistance in strong acids (PEM) or strong alkalis (alkaline) and at high potentials, as well as sufficient mechanical strength.

[0004] Meanwhile, in existing electrolytic hydrogen production equipment, the electrolytes at the cathode and anode are non-circulating liquids, and the non-flowing liquids have a certain impact on the efficiency of electrolysis. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide an electrolytic hydrogen production system that can circulate the electrolyte at the anode plate and the electrolyte at the cathode plate, preventing the two electrolytes from mixing. This ensures that the oxygen and hydrogen in the two electrolytes do not mix, guaranteeing high purity of the exhaust gas of hydrogen and oxygen. Moreover, it is simple to manufacture and has low cost. It can install multiple anode plates and cathode plates in an alternating manner to achieve rapid reaction.

[0006] The solution of the present invention to the aforementioned technical problem is:

[0007] An electrolytic hydrogen production system includes a hydrogen production module, a main electrolyte tank, a first electrolyte tank, and a second electrolyte tank. The hydrogen production module includes a front end plate and a rear end plate. Multiple anode plate assemblies and cathode plate assemblies are spaced apart between the front end plate and the rear end plate. A diaphragm is provided between each adjacent anode plate assembly and cathode plate assembly. The front end plate, the rear end plate, all anode plate assemblies, cathode plate assemblies, and diaphragm are pressed against each other and fixedly connected by multiple bolts.

[0008] The lower left and right sides of the front and rear plates each have a first water inlet connection hole and a second water inlet connection hole formed therein; the upper left and right sides of the front and rear plates each have a first water outlet connection hole and a second water outlet connection hole formed therein; the left and right sides of the top of the front and rear plates each have an oxygen outlet connection hole and a hydrogen outlet connection hole formed therein.

[0009] The lower part of the main electrolyte tank is connected to two water outlet connectors. The water outlet connectors are connected to one end of the corresponding delivery pump through connecting pipes. The other end of the delivery pump is connected to the corresponding first electrolyte tank or second electrolyte tank through connecting pipes.

[0010] The first electrolyte tank provides electrolyte to the anode plate assembly of the hydrogen production module, and the second electrolyte tank provides electrolyte to the cathode plate assembly of the hydrogen production module.

[0011] The outlet of the first electrolyte tank is connected to the inlet of the first delivery pump. The outlet of the first delivery pump is connected to one end of the first tee connector via a connecting pipe. The other two ends of the first tee connector are connected to the connectors at the two first water inlet holes of the front end plate of the hydrogen production module via connecting pipes. The connectors at the two first water inlet holes of the rear end plate of the hydrogen production module are connected via connecting pipes. The outlet of the second electrolyte tank is connected to the inlet of the second delivery pump. The outlet of the second delivery pump is connected to one end of the second tee connector via a connecting pipe. The other two ends of the second tee connector are connected to the connectors at the two second water inlet holes of the rear end plate of the hydrogen production module via connecting pipes. The connectors at the two second water inlet holes of the front end plate of the hydrogen production module are connected via connecting pipes.

[0012] The connectors at the two first water outlet connection holes of the front end plate of the hydrogen production module are connected by a connecting pipe. The connectors at the two first water outlet connection holes of the rear end plate of the hydrogen production module are connected to both ends of the third tee connector by a connecting pipe. The other end of the third tee connector is connected to the return liquid connection of the first electrolyte tank by a connecting pipe.

[0013] The connectors at the two second water outlet connection holes on the rear end plate of the hydrogen production module are connected by a connecting pipe. The connectors at the two second water outlet connection holes on the front end plate of the hydrogen production module are connected to both ends of the fourth three-way connector by a connecting pipe. The other end of the fourth three-way connector is connected to the return liquid connection of the second electrolyte tank by a connecting pipe.

[0014] The two hydrogen outlet connection holes on the front end board of the hydrogen production module are connected to both ends of the fifth three-way connector via connecting pipes. The other end of the fifth three-way connector is connected to the main hydrogen outlet pipe. The two hydrogen outlet connection holes on the rear end board of the hydrogen production module are connected via connecting pipes. The two oxygen outlet connection holes on the rear end board of the hydrogen production module are connected to both ends of the sixth three-way connector via connecting pipes. The other end of the sixth three-way connector is connected to the main oxygen outlet pipe. The two oxygen outlet connection holes on the front end board of the hydrogen production module are connected via connecting pipes.

[0015] The other end of the delivery pump is connected to the top inlet connector on the top plate of the corresponding first or second electrolyte tank via a connecting pipe.

[0016] The return liquid connector of the first electrolyte tank and the return liquid connector of the second electrolyte tank are located on the upper side of the first electrolyte tank or the second electrolyte tank and are connected to the first electrolyte tank or the second electrolyte tank.

[0017] The anode plate assembly includes a first outer insulating plate and an anode sheet. A central cavity is formed in the middle of the first outer insulating plate, and the anode sheet is located in the central cavity. The top end of the anode extension of the anode sheet extends out of the top surface of the first outer insulating plate.

[0018] The cathode plate assembly includes a second outer insulating plate and a cathode sheet. A central cavity is formed in the middle of the second outer insulating plate, and the cathode sheet is located in the central cavity. The top end of the cathode extension of the cathode sheet extends out of the top surface of the second outer insulating plate.

[0019] The lower parts of the left and right sides of the first and second outer insulating plates are each formed with a first guide water inlet connection hole and a second guide water inlet connection hole. The upper parts of the left and right sides of the first and second outer insulating plates are each formed with a first guide water outlet connection hole and a second guide water outlet connection hole. The left and right parts of the top of the first and second outer insulating plates are each formed with an oxygen guide gas outlet connection hole and a hydrogen guide gas outlet connection hole.

[0020] The first water inlet connection hole corresponds to and is connected to all corresponding first guide water inlet connection holes, all second water inlet connection holes corresponds to and is connected to all corresponding second guide water inlet connection holes, all first water outlet connection holes corresponds to and is connected to all corresponding first guide water outlet connection holes, all second water outlet connection holes corresponds to and is connected to all corresponding second guide water outlet connection holes, all oxygen outlet connection holes corresponds to and is connected to all corresponding oxygen guide gas outlet connection holes, and all hydrogen outlet connection holes corresponds to and is connected to all corresponding hydrogen guide gas outlet connection holes.

[0021] The inner wall of the first guide water inlet connection hole of the first outer insulating plate is formed with a first side water inlet hole, the inner wall of the first guide water outlet connection hole is formed with a first side water outlet hole, and the inner wall of the oxygen guide air outlet connection hole is formed with a side oxygen outlet hole. The inner ends of the first side water inlet hole, the first side water outlet hole and the side oxygen outlet hole all extend out of the inner wall of the central cavity of the first outer insulating plate and communicate with the central cavity.

[0022] The inner wall of the second guide water inlet connection hole of the second outer insulating plate is formed with a second side water inlet hole, the inner wall of the second guide water outlet connection hole is formed with a second side water outlet hole, and the inner wall of the hydrogen guide gas outlet connection hole is formed with a side hydrogen gas outlet hole. The inner ends of the second side water inlet hole, the second side water outlet hole and the side hydrogen gas outlet hole all extend out of the inner wall of the central cavity of the second outer insulating plate and communicate with the central cavity.

[0023] The top ends of all anode extensions are fixed to the same positive electrode connection plate, and the top ends of all cathode extensions are fixed to the same negative electrode connection plate.

[0024] Furthermore, the bottom surface of the central cavity of the first and second outer insulating plates is formed with multiple downward protruding support parts. The anode plate and cathode plate are inserted into the corresponding central cavity, and their bottom ends are locked in the left-right through slots formed in the middle of the top surface of the corresponding downward protruding support parts.

[0025] Furthermore, the top left side of the central cavity of the first outer insulating plate is formed with an upwardly extending first insertion slot, and the top right side of the central cavity of the second outer insulating plate is formed with an upwardly extending second insertion slot. The anode extension of the anode plate is inserted into the corresponding first slot, with its top end extending out of the top end of the first insertion slot. The cathode extension of the cathode plate is inserted into the corresponding second slot, with its top end extending out of the top end of the second insertion slot.

[0026] Furthermore, the anode extension and the first insertion slot are fitted together and sealed and fixed by epoxy resin filling, and the cathode extension and the second insertion slot are fitted together and sealed and fixed by epoxy resin filling.

[0027] Furthermore, hemispherical protrusions are formed on the front and rear walls of the anode and cathode plates.

[0028] Furthermore, silicone plates are pressed against the inner end faces of both the front end plate and the rear end plate. The front wall of the first outer insulating plate is pressed against the rear wall of the silicone plate. The silicone plate covers the front end of the central cavity of the corresponding outer insulating plate. A diaphragm is provided at the rear of the outer insulating plate. A second outer insulating plate is provided at the rear of the diaphragm. A diaphragm is provided at the rear of the second outer insulating plate. A first outer insulating plate is provided at the rear of the diaphragm. All the outer insulating plates, second outer insulating plates and diaphragms are arranged in this manner at intervals. A frame-shaped middle silicone plate is pressed against the edges of the front and rear end faces of each diaphragm. The other end face of the frame-shaped middle silicone plate is pressed against the corresponding end face of the corresponding outer insulating plate or second outer insulating plate. The two cooperate with each other. The rear end face of the last outer insulating plate or second outer insulating plate is pressed against the front wall of the rear silicone plate. The silicone plate covers the central cavity of the outer insulating plate or second outer insulating plate.

[0029] All front-end boards, rear-end boards, silicone plates, first outer insulation plates, second outer insulation plates, diaphragms, and the edges of the frame-type intermediate silicone plates are fixedly connected by bolts.

[0030] The outstanding effects of this invention are:

[0031] Compared with existing technologies, it can circulate the electrolyte at the anode plate and the electrolyte at the cathode plate, and the two electrolytes will not mix, thus ensuring that the oxygen and hydrogen in the two electrolytes do not mix, ensuring high purity of hydrogen and oxygen exhaust gas. Moreover, it is simple to manufacture and low in cost. It can install multiple anode plates and cathode plates in an alternating manner to achieve rapid reaction.

[0032] Furthermore, the surfaces of its anode and cathode plates are formed with multiple hemispherical protrusions, increasing the contact area and improving the hydrogen production effect. Attached Figure Description

[0033] Figure 1 This is a partial structural schematic diagram of the present invention;

[0034] Figure 2 yes Figure 1 A schematic diagram of the local structure at a different angle;

[0035] Figure 3 yes Figure 1 A partial top view;

[0036] Figure 4 This is a schematic diagram of the hydrogen production module;

[0037] Figure 5 yes Figure 4 A partial structural diagram of the epoxy resin material removed;

[0038] Figure 6 This is a partial cross-sectional view of the hydrogen production module;

[0039] Figure 7 This is a partial structural diagram of the front-end board;

[0040] Figure 8 yes Figure 7 A schematic diagram of the local structure at a different angle;

[0041] Figure 9 This is a partial structural diagram of the anode plate assembly;

[0042] Figure 10 yes Figure 9 A partial sectional view;

[0043] Figure 11 This is a partial structural diagram of the cathode plate assembly;

[0044] Figure 12 yes Figure 11 A partial sectional view;

[0045] Figure 13 This is a partial exploded view of the hydrogen production module. Detailed Implementation

[0046] For example, see below. Figures 1 to 13 As shown, an electrolytic hydrogen production system includes a hydrogen production module 100, a main electrolyte tank 200, a first electrolyte tank 300, and a second electrolyte tank 400. The hydrogen production module 100 includes a front end plate 10 and a rear end plate 20. A plurality of anode plate assemblies 30 and cathode plate assemblies 40 are provided between the front end plate 10 and the rear end plate 20 at intervals. At the same time, a diaphragm 50 is provided between each adjacent anode plate assembly 30 and cathode plate assembly 40. The front end plate 10, the rear end plate 20, all anode plate assemblies 30, cathode plate assemblies 40, and diaphragm 50 are pressed against each other and fixedly connected by a plurality of bolts.

[0047] The lower parts of the left and right sides of the front end plate 10 and the rear end plate 20 are each formed with a first water inlet connection hole 11 and a second water inlet connection hole 12; the upper parts of the left and right sides of the front end plate 10 and the rear end plate 20 are each formed with a first water outlet connection hole 13 and a second water outlet connection hole 14; the left and right parts of the top of the front end plate 10 and the rear end plate 20 are each formed with an oxygen outlet connection hole 15 and a hydrogen outlet connection hole 16.

[0048] The lower part of the main electrolyte tank 200 is connected to two water outlet connectors 201. The water outlet connectors 201 are connected to one end of the corresponding delivery pump 202 through connecting pipes. The other end (outlet end) of the delivery pump 202 is connected to the corresponding first electrolyte tank 300 or second electrolyte tank 400 through connecting pipes. In order to prevent liquid backflow, a check valve can be connected to the other end (outlet end) of the delivery pump 202, and then connected to the corresponding first electrolyte tank 300 or second electrolyte tank 400 through connecting pipes. This can prevent electrolyte backflow. This structure is a conventional structure, so it will not be described in detail. Correspondingly, the check valve in this embodiment is also omitted and not shown.

[0049] The first electrolyte tank 300 provides electrolyte to the anode plate assembly 30 of the hydrogen production module 100, and the second electrolyte tank 400 provides electrolyte to the cathode plate assembly 40 of the hydrogen production module 100.

[0050] Furthermore, the outlet end of the first electrolyte tank 300 is connected to the inlet of the first delivery pump 301, and the outlet of the first delivery pump 301 is connected to one end of the first tee connector through a connecting pipe. The other two ends of the first tee connector are connected to the connectors at the two first water inlet holes 11 of the front end plate 10 of the hydrogen production module 100 through connecting pipes. The connectors at the two first water inlet holes 11 of the rear end plate 20 of the hydrogen production module 100 are connected through connecting pipes. The outlet end of the second electrolyte tank 400 is connected to the inlet of the second delivery pump 401, and the outlet of the second delivery pump 401 is connected to one end of the second tee connector through a connecting pipe. The other two ends of the second tee connector are connected to the connectors at the two second water inlet holes 12 of the rear end plate 20 of the hydrogen production module 100 through connecting pipes. The connectors at the two second water inlet holes 12 of the front end plate 10 of the hydrogen production module 100 are connected through connecting pipes.

[0051] The connectors at the two first water outlet connection holes 13 of the front end plate 10 of the hydrogen production module 100 are connected by a connecting pipe. The connectors at the two first water outlet connection holes 13 of the rear end plate 20 of the hydrogen production module 100 are connected to both ends of the third tee connector by a connecting pipe. The other end of the third tee connector is connected to the return liquid connection of the first electrolyte tank 300 by a connecting pipe.

[0052] The connectors at the two second water outlet connection holes 13 of the rear end plate 20 of the hydrogen production module 100 are connected by a connecting pipe. The connectors at the two second water outlet connection holes 13 of the front end plate 10 of the hydrogen production module 100 are connected to both ends of the fourth three-way connector by a connecting pipe. The other end of the fourth three-way connector is connected to the return liquid connector of the second electrolyte tank 400 by a connecting pipe.

[0053] The two hydrogen outlet connection holes 16 of the front end plate 10 of the hydrogen production module 100 are connected to both ends of the fifth three-way connector through connecting pipes. The other end of the fifth three-way connector is connected to the main hydrogen outlet pipe 101. The two hydrogen outlet connection holes 16 of the rear end plate 20 of the hydrogen production module 100 are connected through connecting pipes. The two oxygen outlet connection holes 15 of the rear end plate 20 of the hydrogen production module 100 are connected to both ends of the sixth three-way connector through connecting pipes. The other end of the sixth three-way connector is connected to the main oxygen outlet pipe 102. The two oxygen outlet connection holes 15 of the front end plate 10 of the hydrogen production module 100 are connected through connecting pipes.

[0054] The other end of the delivery pump 202 is connected to the top inlet connector on the top plate of the corresponding first electrolyte tank 300 or second electrolyte tank 400 via a connecting pipe.

[0055] Furthermore, the return connection of the first electrolyte tank 300 and the return connection of the second electrolyte tank 400 are located on the upper side of the first electrolyte tank 300 or the second electrolyte tank 400 and are in communication with the first electrolyte tank 300 or the second electrolyte tank 400.

[0056] The anode plate assembly 30 includes a first outer insulating plate 31 and an anode plate 32. A central cavity is formed in the middle of the first outer insulating plate 31, and the anode plate 32 is located in the central cavity. The top end of the anode extension 321 of the anode plate 32 extends out of the top surface of the first outer insulating plate 31.

[0057] The cathode plate assembly 40 includes a second outer insulating plate 41 and a cathode sheet 42. A central cavity is formed in the middle of the second outer insulating plate 41, and the cathode sheet 42 is located in the central cavity. The top end of the cathode extension 421 of the cathode sheet 42 extends out of the top surface of the second outer insulating plate 41.

[0058] The lower parts of the left and right sides of the first outer insulating plate 31 and the second outer insulating plate 41 are each formed with a first guide water inlet connection hole 33 and a second guide water inlet connection hole 34. The upper parts of the left and right sides of the first outer insulating plate 31 and the second outer insulating plate 41 are each formed with a first guide water outlet connection hole 35 and a second guide water outlet connection hole 36. The left and right parts of the top of the first outer insulating plate 31 and the second outer insulating plate 41 are each formed with an oxygen guide gas outlet connection hole 37 and a hydrogen guide gas outlet connection hole 38.

[0059] The first water inlet connection hole 11 corresponds to and communicates with all the corresponding first guide water inlet connection holes 33, all the second water inlet connection holes 12 corresponds to and communicates with all the corresponding second guide water inlet connection holes 34, all the first water outlet connection holes 13 corresponds to and communicates with all the corresponding first guide water outlet connection holes 35, all the second water outlet connection holes 14 corresponds to and communicates with all the corresponding second guide water outlet connection holes 36, all the oxygen outlet connection holes 15 corresponds to and communicates with all the corresponding oxygen guide water outlet connection holes 37, and all the hydrogen outlet connection holes 16 corresponds to and communicates with all the corresponding hydrogen guide water outlet connection holes 38.

[0060] The inner wall of the first guide water inlet connection hole 33 of the first outer insulating plate 31 is formed with a first side water inlet hole 331, the inner wall of the first guide water outlet connection hole 35 is formed with a first side water outlet hole 351, and the inner wall of the oxygen guide air outlet connection hole 37 is formed with a side oxygen outlet hole 371. The inner ends of the first side water inlet hole 331, the first side water outlet hole 351 and the side oxygen outlet hole 371 all extend out of the inner wall of the central cavity of the first outer insulating plate 31 and communicate with the central cavity.

[0061] The inner wall of the second guide water inlet connection hole 34 of the second outer insulating plate 41 is formed with a second side water inlet hole 341, the inner wall of the second guide water outlet connection hole 36 is formed with a second side water outlet hole 361, and the inner wall of the hydrogen guide gas outlet connection hole 38 is formed with a side hydrogen gas outlet hole 381. The inner ends of the second side water inlet hole 341, the second side water outlet hole 361 and the side hydrogen gas outlet hole 381 all extend out of the inner wall of the central cavity of the second outer insulating plate 41 and communicate with the central cavity.

[0062] The top ends of all anode extensions 321 are fixed to the same positive electrode connecting plate 1, and the top ends of all cathode extensions 421 are fixed to the same negative electrode connecting plate 2.

[0063] Furthermore, the bottom surfaces of the central cavities of the first outer insulating plate 31 and the second outer insulating plate 41 are each formed with a plurality of lower protruding support portions 3. The anode plate 32 and the cathode plate 42 are inserted into the corresponding central cavities, and their bottom ends are locked in the left-right through slots formed in the middle of the top surface of the corresponding lower protruding support portion 3.

[0064] Furthermore, the top left side of the central cavity of the first outer insulating plate 31 is formed with an upwardly extending first insertion slot, and the top right side of the central cavity of the second outer insulating plate 41 is formed with an upwardly extending second insertion slot. The anode extension 321 of the anode plate 32 is inserted into the corresponding first slot, with its top end extending out of the top end of the first insertion slot. The cathode extension 421 of the cathode plate 42 is inserted into the corresponding second slot, with its top end extending out of the top end of the second insertion slot.

[0065] Furthermore, the anode extension 321 and the first insertion slot are fitted together and sealed and fixed by epoxy resin filling, and the cathode extension 421 and the second insertion slot are fitted together and sealed and fixed by epoxy resin filling.

[0066] Furthermore, both the first outer insulating plate 31 and the second outer insulating plate 41 are rectangular frame plates with a central cavity in the middle, which is rectangular in shape. The anode plate 32 and the cathode plate 42 are both rectangular plates, and their top surfaces are respectively formed with an anode extension 321 and a cathode extension 421. A second extension 4 is formed on the top surface of the anode plate 32 or the cathode plate 42 on one side of the anode extension 321 and the cathode extension 421. The second extension 4 is located in the corresponding central cavity.

[0067] Furthermore, hemispherical protrusions 5 are formed on the front and rear walls of the anode plate 32, cathode plate 42, anode extension 321, cathode extension 421 and second extension 4.

[0068] Furthermore, silicone plates 60 are pressed against the inner end faces of both the front end plate 10 and the rear end plate 20. The front wall of the first outer insulating plate 31 is pressed against the rear wall of the silicone plate 60. The silicone plate 60 covers the front end of the central cavity of the corresponding outer insulating plate 31. A diaphragm 50 is provided at the rear of the outer insulating plate 31. A second outer insulating plate 41 is provided at the rear of the diaphragm 50. A diaphragm 50 is provided at the rear of the second outer insulating plate 41. A first outer insulating plate 31 is provided at the rear of the diaphragm 50. All the first outer insulating plates 31 are... The insulating plate 31, the second outer insulating plate 41, and the diaphragm sheet 50 are arranged in sequence at intervals in this manner. The edges of the front and rear end faces of each diaphragm sheet 50 are pressed against a frame-shaped intermediate silicone sheet 51. The other end face of the frame-shaped intermediate silicone sheet 51 is pressed against the corresponding end face of the first outer insulating plate 31 or the second outer insulating plate 41. The two cooperate with each other. The rear end face of the last first outer insulating plate 31 or the second outer insulating plate 41 is pressed against the front wall of the silicone sheet 60. The silicone sheet 60 covers the middle cavity of the first outer insulating plate 31 or the second outer insulating plate 41.

[0069] All front end plates 10, rear end plates 20, silicone plates 60, first outer insulation plates 31, second outer insulation plates 41, diaphragm sheets 50, and the edges of frame-type intermediate silicone sheets 51 are fixedly connected by bolts.

[0070] Furthermore, the top ends of all anode extensions 321 are inserted into the corresponding holes of the same positive electrode connecting plate 1 and welded and fixed. The top ends of all cathode extensions 421 are inserted into the corresponding holes of the same negative electrode connecting plate 2 and welded and fixed. An intermediate connecting plate 6 is welded and fixed to the middle of the top surface of both the positive electrode connecting plate 1 and the negative electrode connecting plate 2. Reinforcing copper blocks 61 are welded and fixed to the left and right side walls of the intermediate connecting plate 6. The positive electrode connecting plate 1, the negative electrode connecting plate 2 and the intermediate connecting plate 6 are all stainless steel plates.

[0071] Furthermore, the top surfaces of all front end plates 10, rear end plates 20, silicone plates 60, first outer insulating plates 31, second outer insulating plates 41, diaphragm sheets 50 and frame-shaped intermediate silicone sheets 51 are formed with upwardly extending top extensions on the left and right sides.

[0072] The front end plate 10 and the rear end plate 20 have an upwardly extending central extension formed in the middle of their top surfaces. Inner slots 7 are formed on the opposite walls of the two central extensions. The top of the inner slots 7 extends out of the top surface of the central extensions. The front and rear ends of the positive electrode connecting plate 1 and the negative electrode connecting plate 2 are inserted into the corresponding inner slots 7, and their bottom ends press against the bottom surface of the corresponding inner slots 7.

[0073] Furthermore, the top cavity formed between the two middle extensions and all the top extensions is filled with epoxy resin material 8 to form an epoxy resin block. The lower parts of the positive electrode connecting plate 1, the negative electrode connecting plate 2, and the intermediate connecting plate 6, as well as the lower part of the reinforcing copper block 61, are in the epoxy resin material 8. The upper parts of the intermediate connecting plate 6 and the reinforcing copper block 61 extend out of the top surface of the epoxy resin material 8, that is, the top surface of the epoxy resin block.

[0074] Connectors 9 are connected to the first water inlet connection hole 11, the second water inlet connection hole 12, the first water outlet connection hole 13, the second water outlet connection hole 14, the oxygen outlet connection hole 15, and the hydrogen outlet connection hole 16.

[0075] Both the anode plate 32 and the cathode plate 42 are made of metal. The anode plate 32 can be made of nickel metal, and the cathode plate 42 can be made of iron.

[0076] The diaphragm 50 is a microporous membrane that allows hydroxide ions to pass through, but it hinders the flow between oxygen and hydrogen, as well as the flow of liquid water. It is a product that can be directly purchased on the market and will not be described in detail here.

[0077] Liquid level sensors are fixed in the main electrolyte tank 200, the first electrolyte tank 300, and the second electrolyte tank 400. All electrical components in this embodiment are electrically connected to the control host via electrical connection lines and are controlled by the control host. This structure is a conventional structure and will not be described in detail here.

[0078] The middle connecting plate 6 and the reinforcing copper block 61 of the positive electrode connecting plate 1 are electrically connected to the positive electrode of the power supply by bolts, and the middle connecting plate 6 and the reinforcing copper block 61 of the negative electrode connecting plate 2 are electrically connected to the negative electrode of the power supply by bolts.

[0079] In this embodiment, the transfer pump 202 operates to transport the electrolyte in the main electrolyte tank 200 to the first electrolyte tank 300 and the second electrolyte tank 400. When the corresponding level sensor detects that the electrolyte has reached its maximum limit, the transfer pump 202 stops operating. Then, the first transfer pump 301 and the second transfer pump 401 of the first electrolyte tank 300 and the second electrolyte tank 400 operate to transport the electrolyte to the hydrogen production module 100. The electrolyte in the first electrolyte tank 300 (this application uses an alkaline electrolyte, such as one composed of pure water and potassium hydroxide, which is a conventional structure and will not be described in detail here) enters through the two first water inlet connection holes 11, and the electrolyte in the second electrolyte tank 400 enters through the second water inlet connection hole 12, respectively entering the two first guide water inlets. Electrolyte entering through the first guide water inlet connection hole 33 and the two second guide water inlet connection holes 34 will enter all the first guide water inlet connection holes 33, and then enter the central cavity of the corresponding first outer insulating plate 31 (i.e., the anode plate 32) through the first side water inlet hole 331. Then, it will enter the first guide water outlet connection hole 35 through the corresponding first side water outlet hole 351 and flow out back to the first electrolyte tank 300. Similarly, electrolyte entering through the second guide water inlet connection hole 34 will enter all the second side water inlet holes 341 and then enter the corresponding second outer insulating plate 41 (i.e., the cathode plate 42). Then, it will enter the second guide water outlet connection hole 36 through the second side water outlet hole 361 and then be discharged back to the second electrolyte tank 400.

[0080] The electrolyte is contained in the first outer insulating plate 31 and the second outer insulating plate 41. When the anode plate 32 and the cathode plate 42 are energized, the electrolyte is electrolyzed. An oxidation reaction (loss of electrons) occurs at the anode plate 32 to produce oxygen, while a reduction reaction (gain of electrons) occurs at the cathode plate 42 to produce hydrogen. The diaphragm plate 50 can block oxygen and hydrogen, preventing them from mixing. Oxygen is discharged from the oxygen guide outlet connection hole 37 and finally from the oxygen main outlet pipe 102 to the oxygen storage tank it is connected to. Hydrogen can be discharged from the hydrogen guide outlet connection hole 38 and from the hydrogen main outlet pipe 101 to the hydrogen storage tank it is connected to for storage. Its electrolysis principle is the same as that of existing known principles, and will not be described in detail here.

[0081] In this embodiment, hemispherical protrusions 5 are formed on the front and rear walls of the anode plate 32, cathode plate 42, anode extension 321, cathode extension 421 and second extension 4, so that the contact area with the electrolyte is large and the electrolysis effect is improved.

[0082] Meanwhile, this embodiment uses multiple anode plates 32 and cathode plates 42, which makes it simple to manufacture and has low manufacturing costs. The anode plates 32 can be made of nickel metal and the cathode plates 42 can be made of iron, which greatly reduces the manufacturing cost.

[0083] During use, the electrolyte in the first electrolyte tank 300 and the second electrolyte tank 400 will be continuously consumed. When the corresponding level sensor detects that the liquid level is lower than the minimum limit, the control host receives the detection signal and controls the corresponding transfer pump 202 to run, transferring the electrolyte in the main electrolyte tank 200 to the first electrolyte tank 300 and the second electrolyte tank 400. This continues until the level sensors in the first electrolyte tank 300 and the second electrolyte tank 400 detect that the liquid level has reached the maximum limit. At this point, the control host controls the transfer pump 202 to stop running. When the level sensor in the main electrolyte tank 200 detects that the electrolyte level is lower than the minimum limit, the control host can control the corresponding indicator light (which is electrically connected to the control host via an electrical connection line) to light up, indicating that there is a shortage of liquid. Then, the inlet of the main electrolyte tank 200 can be opened to replenish the liquid.

[0084] Finally, the above embodiments are only used to illustrate the present invention and are not intended to limit the present invention. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions also fall within the scope of the present invention, and the patent protection scope of the present invention should be defined by the claims.

Claims

1. An electrolytic hydrogen production system, comprising a hydrogen production module 100, a main electrolyte tank (200), a first electrolyte tank (300), and a second electrolyte tank (400), characterized in that: The hydrogen production module 100 includes a front end plate (10) and a rear end plate (20). A plurality of anode plate assemblies (30) and cathode plate assemblies (40) are provided between the front end plate (10) and the rear end plate (20) and are spaced apart. Meanwhile, a diaphragm (50) is provided between each adjacent anode plate assembly (30) and cathode plate assembly (40). The front end plate (10), the rear end plate (20), all anode plate assemblies (30), cathode plate assemblies (40) and diaphragm (50) are pressed against each other and fixedly connected by a plurality of bolts. The lower parts of the left and right sides of the front end plate (10) and the rear end plate (20) are each formed with a first water inlet connection hole (11) and a second water inlet connection hole (12); the upper parts of the left and right sides of the front end plate (10) and the rear end plate (20) are each formed with a first water outlet connection hole (13) and a second water outlet connection hole (14); the left and right parts of the top of the front end plate (10) and the rear end plate (20) are each formed with an oxygen outlet connection hole (15) and a hydrogen outlet connection hole (16). The lower part of the main electrolyte tank (200) is connected to two water outlet connectors (201). The water outlet connectors (201) are connected to one end of the corresponding delivery pump (202) through a connecting pipe. The other end of the delivery pump (202) is connected to the corresponding first electrolyte tank (300) or second electrolyte tank (400) through a connecting pipe. The first electrolyte tank (300) provides electrolyte to the anode plate assembly (30) of the hydrogen production module 100, and the second electrolyte tank (400) provides electrolyte to the cathode plate assembly (40) of the hydrogen production module 100.

2. The electrolytic hydrogen production system according to claim 1, characterized in that: The outlet end of the first electrolyte tank (300) is connected to the inlet of the first delivery pump (301). The outlet of the first delivery pump (301) is connected to one end of the first tee connector through a connecting pipe. The other two ends of the first tee connector are connected to the connectors at the two first water inlet connection holes (11) of the front end plate (10) of the hydrogen production module 100 through connecting pipes. The connectors at the two first water inlet connection holes (11) of the rear end plate (20) of the hydrogen production module 100 are connected through connecting pipes. The outlet of the bottom of the second electrolyte tank (400) is connected to the inlet of the second transfer pump (401). The outlet of the second transfer pump (401) is connected to one end of the second three-way connector through a connecting pipe. The other two ends of the second three-way connector are connected to the connectors at the two second water inlet connection holes (12) of the rear end plate (20) of the hydrogen production module 100 through connecting pipes. The connectors at the two second water inlet connection holes (12) of the front end plate (10) of the hydrogen production module 100 are connected through connecting pipes. The connectors at the two first water outlet connection holes (13) of the front end plate (10) of the hydrogen production module 100 are connected by a connecting pipe. The connectors at the two first water outlet connection holes (13) of the rear end plate (20) of the hydrogen production module 100 are connected to both ends of the third tee connector by a connecting pipe. The other end of the third tee connector is connected to the return liquid connector of the first electrolyte tank (300) by a connecting pipe. The connectors at the two second water outlet connection holes (13) of the rear end plate (20) of the hydrogen production module 100 are connected by a connecting pipe. The connectors at the two second water outlet connection holes (13) of the front end plate (10) of the hydrogen production module 100 are connected to both ends of the fourth three-way connector by a connecting pipe. The other end of the fourth three-way connector is connected to the return liquid connector of the second electrolyte tank (400) by a connecting pipe. The two hydrogen outlet connection holes (16) of the front end plate (10) of the hydrogen production module 100 are connected to both ends of the fifth three-way connector through a connecting pipe. The other end of the fifth three-way connector is connected to the main hydrogen outlet pipe (101). The two hydrogen outlet connection holes (16) of the rear end plate (20) of the hydrogen production module 100 are connected through a connecting pipe. The two oxygen outlet connection holes (15) of the rear end plate (20) of the hydrogen production module 100 are connected to both ends of the sixth three-way connector through a connecting pipe. The other end of the sixth three-way connector is connected to the main oxygen outlet pipe (102). The two oxygen outlet connection holes (15) of the front end plate (10) of the hydrogen production module 100 are connected through a connecting pipe.

3. The electrolytic hydrogen production system according to claim 1, characterized in that: The other end of the delivery pump (202) is connected to the top inlet connector on the top plate of the corresponding first electrolyte tank (300) or second electrolyte tank (400) via a connecting pipe.

4. The electrolytic hydrogen production system according to claim 1, characterized in that: The return connection of the first electrolyte tank (300) and the return connection of the second electrolyte tank (400) are located on the upper side of the first electrolyte tank (300) or the second electrolyte tank (400) and are connected to the first electrolyte tank (300) or the second electrolyte tank (400).

5. The electrolytic hydrogen production system according to claim 1, characterized in that: The anode plate assembly (30) includes a first outer insulating plate (31) and an anode plate (32). A central cavity is formed in the middle of the first outer insulating plate (31), and the anode plate (32) is located in the central cavity. The top end of the anode extension (321) of the anode plate (32) extends out of the top surface of the first outer insulating plate (31). The cathode plate assembly (40) includes a second outer insulating plate (41) and a cathode sheet (42). A central cavity is formed in the middle of the second outer insulating plate (41), and the cathode sheet (42) is located in the central cavity. The top end of the cathode extension (421) of the cathode sheet (42) extends out of the top surface of the second outer insulating plate (41). The lower parts of the left and right sides of the first outer insulating plate (31) and the second outer insulating plate (41) are each formed with a first guide water inlet connection hole (33) and a second guide water inlet connection hole (34). The upper parts of the left and right sides of the first outer insulating plate (31) and the second outer insulating plate (41) are each formed with a first guide water outlet connection hole (35) and a second guide water outlet connection hole (36). The left and right parts of the top of the first outer insulating plate (31) and the second outer insulating plate (41) are each formed with an oxygen guide gas outlet connection hole (37) and a hydrogen guide gas outlet connection hole (38). The first water inlet connection hole (11) corresponds to and is connected to all the corresponding first guide water inlet connection holes (33), all the second water inlet connection holes (12) correspond to and are connected to all the corresponding second guide water inlet connection holes (34), all the first water outlet connection holes (13) correspond to and are connected to all the corresponding first guide water outlet connection holes (35), all the second water outlet connection holes (14) correspond to and are connected to all the corresponding second guide water outlet connection holes (36), all the oxygen outlet connection holes (15) correspond to and are connected to all the corresponding oxygen guide gas outlet connection holes (37), and all the hydrogen outlet connection holes (16) correspond to and are connected to all the corresponding hydrogen guide gas outlet connection holes (38). The inner wall of the first guide water inlet connection hole (33) of the first outer insulating plate (31) is formed with a first side water inlet hole (331), the inner wall of the first guide water outlet connection hole (35) is formed with a first side water outlet hole (351), and the inner wall of the oxygen guide air outlet connection hole (37) is formed with a side oxygen outlet hole (371). The inner ends of the first side water inlet hole (331), the first side water outlet hole (351) and the side oxygen outlet hole (371) all extend out of the inner wall of the central cavity of the first outer insulating plate (31) and communicate with the central cavity. The inner wall of the second guide water inlet connection hole (34) of the second outer insulating plate (41) is formed with a second side water inlet hole (341), the inner wall of the second guide water outlet connection hole (36) is formed with a second side water outlet hole (361), and the inner wall of the hydrogen guide gas outlet connection hole (38) is formed with a side hydrogen gas outlet hole (381). The inner ends of the second side water inlet hole (341), the second side water outlet hole (361) and the side hydrogen gas outlet hole (381) all extend out of the inner wall of the central cavity of the second outer insulating plate (41) and communicate with this central cavity. The top ends of all anode extensions (321) are fixed to the same positive electrode connecting plate (1), and the top ends of all cathode extensions (421) are fixed to the same negative electrode connecting plate (2).

6. The electrolytic hydrogen production system according to claim 5, characterized in that: The bottom surfaces of the central cavities of the first outer insulating plate (31) and the second outer insulating plate (41) are formed with multiple lower protruding support portions (3). The anode plate (32) and the cathode plate (42) are inserted into the corresponding central cavities, and their bottom ends are locked in the left-right through slots formed in the middle of the top surface of the corresponding lower protruding support portion (3).

7. The electrolytic hydrogen production system according to claim 5, characterized in that: The top left side of the central cavity of the first outer insulating plate (31) is formed with an upwardly extending first insertion slot, and the top right side of the central cavity of the second outer insulating plate (41) is formed with an upwardly extending second insertion slot. The anode extension (321) of the anode plate (32) is inserted into the corresponding first slot, and its top end extends out of the top end of the first insertion slot. The cathode extension (421) of the cathode plate (42) is inserted into the corresponding second slot, and its top end extends out of the top end of the second insertion slot.

8. The electrolytic hydrogen production system according to claim 5, characterized in that: The first outer insulating plate (31) and the second outer insulating plate (41) are both rectangular frame plates with a central cavity in the middle. The anode plate (32) and the cathode plate (42) are both rectangular plates with an anode extension (321) and a cathode extension (421) respectively formed on their top surfaces. A second extension (4) is formed on the top surface of the anode plate (32) or the cathode plate (42) on one side of the anode extension (321) and the cathode extension (421). The second extension (4) is located in the corresponding central cavity.

9. The electrolytic hydrogen production system according to claim 8, characterized in that: Hemispherical protrusions (5) are formed on the front and rear walls of the anode plate (32), cathode plate (42), anode extension (321), cathode extension (421) and second extension (4).

10. The electrolytic hydrogen production system according to claim 6, characterized in that: Silicone plates (60) are pressed against the inner end faces of the front end plate (10) and the rear end plate (20). The front wall of the first outer insulating plate (31) is pressed against the rear wall of the silicone plate (60). The silicone plate (60) covers the front end of the central cavity of the corresponding outer insulating plate (31). A diaphragm (50) is provided at the rear of the outer insulating plate (31). A second outer insulating plate (41) is provided at the rear of the diaphragm (50). A diaphragm (50) is provided at the rear of the second outer insulating plate (41). A first outer insulating plate (31) is provided at the rear of the diaphragm (50). All the outer insulating plates... (31) The second outer insulating plate (41) and the diaphragm (50) are arranged in this way. The edges of the front and rear end faces of each diaphragm (50) are pressed against a frame-shaped middle silicone sheet (51). The other end face of the frame-shaped middle silicone sheet (51) is pressed against the corresponding end face of the first outer insulating plate (31) or the second outer insulating plate (41). The two cooperate with each other. The rear end face of the last first outer insulating plate (31) or the second outer insulating plate (41) is pressed against the front wall of the silicone sheet (60). The silicone sheet (60) covers the middle cavity of the first outer insulating plate (31) or the second outer insulating plate (41). All front end plates (10), rear end plates (20), silicone plates (60), first outer insulation plates (31), second outer insulation plates (41), diaphragm sheets (50), and the edges of frame-type intermediate silicone sheets (51) are fixedly connected by bolts.

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