Bipolar plate, hydrogen production electrolytic tank and hydrogen production equipment
The dual plate design with integrated liquid and gas management within the dual plates addresses the need for a gas-liquid separation unit, enhancing efficiency and reducing costs in hydrogen production.
Patent Information
- Application Number
- CN202410026970.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-08
- Publication Date
- 2025-07-15
AI Technical Summary
Existing hydrogen production equipment requires a gas-liquid separation device, which raises the entry threshold for hydrogen production.
A bipolar plate design is adopted, including a hollow inner cavity surrounded by the first electrode plate, the second electrode plate and the pole frame. A spray hole is provided in the inner cavity for spraying the electrolyte, and a liquid inlet and exhaust port are provided on the pole frame to achieve separation of the electrolyte and gas.
Save gas-liquid separation devices, reduce the cost of hydrogen production equipment, reduce the threshold for hydrogen production, and improve electrolytic efficiency and hydrogen utilization.
Smart Images
Figure CN120311209A_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of electrolysis equipment, and specifically, to a bipolar plate, a hydrogen production electrolytic cell using the bipolar plate for hydrogen production, and a hydrogen production device using the hydrogen production electrolytic cell. Background Art
[0002] Electrolysis, as a commonly used technology in metallurgy and hydrogen production, has advantages such as a wide processing range and high processing quality. Taking hydrogen production by electrolysis as an example, the technology of hydrogen production by electrolyzing water is a relatively mature technology and is currently the most important green hydrogen production technology.
[0003] A hydrogen production device generally includes an electrolytic cell, a gas-liquid separation device, and corresponding storage devices and power devices, etc. Hydrogen and oxygen are generated by electrolyzing the electrolytic cell, and then the generated gas flows to the gas-liquid separation device with the electrolyte for separation, and finally flows into the hydrogen storage device for storage, which is convenient for subsequent transportation and use, etc. Among them, the gas-liquid separation device belongs to a pressure vessel, which needs to be specially designed according to different electrolytic cells, and also needs to have corresponding production qualifications to carry out production, thus raising the entry threshold for hydrogen production. Therefore, those skilled in the art urgently need to solve the problem that a gas-liquid separation device must be provided in the hydrogen production device. Summary of the Invention
[0004] The purpose of the present disclosure is to provide a bipolar plate, and a hydrogen production device using the bipolar plate does not need to be provided with a gas-liquid separation device.
[0005] To achieve the above purpose, the present disclosure provides a bipolar plate, including:
[0006] A first plate and a second plate which are oppositely arranged, and a cell frame arranged around the edges of the first plate and the second plate. The first plate, the second plate and the cell frame enclose a hollow inner cavity for accommodating an electrolyte; a plurality of spray holes are provided on the first plate and the second plate, and the plurality of spray holes are communicated with the inner cavity for spraying the electrolyte in the inner cavity; a first liquid inlet and a first exhaust port are provided on the cell frame, the first liquid inlet is communicated with the inner cavity for introducing the electrolyte into the inner cavity, and the first exhaust port is used for discharging the gas generated by electrolysis.
[0007] Optionally, the number of the spray holes in the vertical direction of the first plate and the second plate gradually increases from bottom to top.
[0008] Optionally, the spray holes are evenly distributed on the first plate and the second plate.
[0009] Optionally, the spray holes on the first plate and the second plate gradually decrease from bottom to top, and the diameter of the spray holes located below is smaller than the diameter of the spray holes located above.
[0010] Optionally, the thickness of the first and second electrode plates is 0.5 - 1 mm.
[0011] Optionally, the diameter of the spray holes is less than 20 mm.
[0012] Optionally, a flow control nozzle is provided in the spray holes.
[0013] According to a second aspect of the present disclosure, there is also provided a hydrogen production electrolytic cell, including: the bipolar plate described in the above embodiment; a diaphragm located between two adjacent bipolar plates, and a diffusion layer, an electrode, and a gasket are further provided between the diaphragm and the bipolar plate; a second liquid inlet communicating with the first liquid inlet for introducing electrolyte into the inner cavity; a second exhaust port communicating with the first exhaust port for discharging the gas generated by electrolysis; and a liquid outlet for recovering the electrolyte sprayed from the bipolar plate.
[0014] Optionally, the mutually adjacent first electrode plate, second electrode plate, electrode frame of two adjacent bipolar plates, and the diaphragm located between the two bipolar plates form an electrolysis cell, and each electrolysis cell is provided with a liquid outlet and a second exhaust port, and the distance between the diaphragm and its adjacent first and second electrode plates in the electrolysis cell is less than 10 mm.
[0015] According to a third aspect of the present disclosure, there is also provided a hydrogen production device, including: the hydrogen production electrolytic cell described in the above embodiment, a hydrogen storage device, and a power device.
[0016] Compared with the prior art, the advantages of the present disclosure are as follows: The bipolar plate of the present disclosure includes a first electrode plate, a second electrode plate, and an electrode frame, and further includes a hollow inner cavity surrounded by the first electrode plate, the second electrode plate, and the electrode frame. A first liquid inlet and a first exhaust port are provided on the electrode frame. Spray holes are also provided on the first and second electrode plates. When installed in the electrolytic cell and electrolysis starts, after introducing electrolyte into the inner cavity through the first liquid inlet, the electrolyte can be sprayed onto the diaphragm through the spray holes for electrolysis, so that the electrolytic cell will not be filled with electrolyte. The gas generated by electrolysis is discharged through the first exhaust port and will not be discharged together with the electrolyte. Therefore, the gas-liquid separation device in the hydrogen production device can be omitted, saving the cost of manufacturing equipment and reducing the threshold of the hydrogen production device.
[0017] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation section. Description of the Drawings
[0018] The drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. They are used together with the following specific implementation to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings:
[0019] Figure 1 is the front view of the bipolar plate provided in the exemplary embodiment of the present disclosure;
[0020] Figure 2 is the front view of the bipolar plate provided in another exemplary embodiment of the present disclosure;
[0021] Figure 3 is the cross-sectional view of the bipolar plate provided in the exemplary embodiment of the present disclosure;
[0022] Figure 4 is the schematic structural diagram of the electrolytic cell provided in the exemplary embodiment of the present disclosure;
[0023] Figure 5 is the schematic diagram of the hydrogen production device provided in the exemplary embodiment of the present disclosure.
[0024] Description of reference numerals
[0025] 1 - Bipolar plate; 11 - First plate; 12 - Second plate; 13 - Pole frame; 14 - Inner cavity; 15 - Spray hole; 151 - Flow control nozzle; 16 - First liquid inlet; 17 - First exhaust port;
[0026] 2 - Electrolytic cell; 21 - Diaphragm; 22 - Second liquid inlet; 23 - Second exhaust port; 24 - Liquid outlet;
[0027] 3 - Hydrogen storage device; 4 - Power device. Detailed description of the specific embodiment
[0028] The following is a detailed description of the specific embodiments of the present disclosure with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for the purpose of illustrating and explaining the present disclosure, and are not intended to limit the present disclosure.
[0029] In the present disclosure, unless otherwise stated, the orientation terms such as "upper, lower, high, low, top, bottom" generally refer to the orientation of the corresponding components or structures in the direction of gravity, and specifically can refer to Figure 1 the drawing direction shown. "Inner, outer" refer to the inside and outside of the contour of the corresponding component. In addition, it should be noted that the terms such as "first, second" are used to distinguish one element from another, and do not have sequentiality and importance. Additionally, in the description with reference to the drawings, the same reference numerals in different drawings represent the same elements. The above definitions are only for explaining and illustrating the present disclosure, and should not be construed as a limitation to the present disclosure.
[0030] For ease of understanding, the following refers to the attached Figures 1 to 5 , and in combination with the embodiments, details the specific structure and working principle of the bipolar plate, hydrogen production electrolytic cell and hydrogen production device of the present disclosure.
[0031] In one embodiment of the present disclosure, refer to Figure 1 and Figure 3 , the bipolar plate 1 of the present disclosure includes a first plate 11, a second plate 12, and a cell frame 13, and further includes a hollow inner cavity 14 enclosed by the three, through which the electrolyte introduced into the bipolar plate 1 can be accommodated. Among them, the first plate 11 and the second plate 12 are usually made of metal materials, such as stainless steel, nickel plate, carbon steel, cast iron, etc. A plurality of spray holes 15 are provided on the first plate 11 and the second plate 12. The spray holes 15 penetrate through the first plate 11 and the second plate 12 and communicate with the inner cavity 14, and the electrolyte in the inner cavity 14 can be sprayed out through the spray holes 15.
[0032] A first liquid inlet 16 and a first exhaust port 17 are provided on the cell frame 13. Among them, the first liquid inlet 16 communicates with the inner cavity 14 and can be provided at the bottom of the cell frame 13 for facilitating connection with the electrolyte channel of the electrolytic cell 2. The electrolyte can be introduced into the inner cavity 14 through the first liquid inlet 16 to facilitate subsequent electrolysis work. The first exhaust port 17 is used to discharge the gas generated by electrolysis. Since the gas usually flows upward and is discharged through the top of the cell frame 13, the first exhaust port 17 can be provided at the top of the cell frame 13 to facilitate the gas to flow out of the electrolytic cell through the first exhaust port 17.
[0033] After the bipolar plate 1 of the present disclosure is installed in the electrolytic cell 2, when the electrolytic cell starts to work, the electrolyte is introduced into the inner cavity 14 through the first liquid inlet 16, and then the electrolyte is sprayed onto the diaphragm 21 through the spray holes 15 on the first plate 11 and the second plate 12 for electrolysis reaction. Since the flow rate of the electrolyte introduced into the inner cavity 14 is relatively fast, while the flow rate of the sprayed electrolyte is relatively slow, the electrolyte in the inner cavity 14 can always be kept full, avoiding the situation that there is no electrolyte behind the spray holes 15 at a higher position, and preventing the dry burning caused by the fact that part of the diaphragm 21 is not sprayed with electrolyte. As the electrolysis reaction progresses, the un-electrolyzed electrolyte can flow downward along the diaphragm 21 and finally flow out of the electrolytic cell 2, and the gas generated by electrolysis will flow out of the electrolytic cell through the first exhaust port 17 on the cell frame 13, and will not flow out synchronously with the un-electrolyzed electrolyte, avoiding the subsequent gas-liquid separation process, and thus the gas-liquid separation device can be omitted in the subsequent process.
[0034] In one embodiment of the present disclosure, refer to Figure 1, in this embodiment, the number of the plurality of spray holes 15 in the vertical direction of the first electrode plate 11 and the second electrode plate 12 is distributed such that the number increases gradually from bottom to top. With such a setting, since there are fewer spray holes 15 at the bottom of the first electrode plate 11 and the second electrode plate 12 and more spray holes 15 at the top, when spraying the electrolyte, more electrolyte will be sprayed out from the top of the first electrode plate 11 and the second electrode plate 12, and less electrolyte will be sprayed out from the bottom. As the electrolysis reaction progresses continuously, the electrolyte that has not undergone the electrolysis reaction at the top will flow downward along the separator 21 to supplement the electrolyte at the bottom of the separator 21, enabling the electrolyte that has not been electrolyzed at the top of the separator 21 to react at the bottom of the separator 21. On the one hand, it can improve the utilization rate of the electrolyte flowing down from the top of the separator 21, and on the other hand, it can also save energy and improve the efficiency of hydrogen production. Moreover, if the number of spray holes 15 at the top and bottom is the same, it will also cause more electrolyte to be sprayed out from the spray holes 15 at the bottom when the electrolyte starts to be introduced, increasing the speed at which the inner cavity 14 is filled with the electrolyte, thereby reducing the electrolysis efficiency.
[0035] In another embodiment of the present disclosure, refer to Figure 2 , in this embodiment, the plurality of spray holes 15 are evenly distributed on the first electrode plate 11 and the second electrode plate 12. With such a setting, when manufacturing the first electrode plate 11 and the second electrode plate 12, it is possible to more conveniently process the spray holes on the first electrode plate 11 and the second electrode plate 12, without the need to specifically set different molds or drilling tools for the processing of the spray holes 15, etc. Furthermore, it can reduce the manufacturing cost of the first electrode plate 11 and the second electrode plate 12, lower the manufacturing threshold of the two, and facilitate popularization.
[0036] In an embodiment of the present disclosure, refer to Figure 1 , in this embodiment, the number of the plurality of spray holes 15 in the vertical direction of the first electrode plate 11 and the second electrode plate 12 is distributed such that the number decreases gradually from bottom to top, and the diameter of the spray holes located below is smaller than the diameter of the spray holes located above. With such a setting, when spraying the electrolyte, due to the different diameters of the spray holes 15, it is also possible to make relatively more electrolyte be sprayed out from the top of the first electrode plate 11 and the second electrode plate 12, and relatively less electrolyte be sprayed out from the bottom, making the electrolyte on the separator 21 uniform. As the electrolysis reaction progresses continuously, the electrolyte that has not undergone the electrolysis reaction at the top will flow downward along the separator 21 to supplement the electrolyte at the bottom of the separator 21, enabling the electrolyte that has not been electrolyzed at the top of the separator 21 to react at the bottom of the separator 21. On the one hand, it can improve the utilization rate of the electrolyte flowing down from the top of the separator 21, and on the other hand, it can also save energy and improve the efficiency of hydrogen production. Of course, in other embodiments, the distribution and diameter size of the spray holes 15 can also be different, as long as it can ensure that the electrolyte on the separator 2 is uniform during the spraying of the electrolyte, and it can be determined according to the actual situation specifically. The present disclosure does not limit this.
[0037] In one embodiment of the present disclosure, the distance between the first electrode plate 11 and the second electrode plate is less than 10 mm. By setting it in this way, the volume of the inner cavity 14 can be restricted, thereby controlling the time for the electrolyte to fill the inner cavity 14. Then, based on factors such as the time for the electrolyte to fill the inner cavity 14 and the time of the electrolysis reaction, the flow rate of the electrolyte entering the inner cavity 14 through the first liquid inlet 16 can be determined, so as to ensure that the electrolyte entering the inner cavity 14 through the first liquid inlet 16 is at a suitable flow rate, thereby improving the utilization efficiency of the electrolyte and further improving the efficiency of the entire electrolysis.
[0038] In one embodiment of the present disclosure, the thickness of the first electrode plate 11 and the second electrode plate 12 of the bipolar plate 1 is 0.5 - 1 mm. The thickness of the traditional metal bipolar plate is 2 mm. When it is necessary to increase the hydrogen production, more bipolar plates 1 are set in the electrolytic cell 2 or the diameter of the bipolar plate 1 is increased. Doing so brings problems such as an increase in the weight of the electrolytic cell 2 and uneven temperature distribution of the bipolar plate 1 on the one hand, and on the other hand, the heavier electrolytic cell 2 will also have problems of being difficult to handle and manufacture. The thickness of the first electrode plate 11 and the second electrode plate 12 of the bipolar plate 1 in the present disclosure is 0.5 - 1 mm. Reducing the thickness of the bipolar plate will not cause the above problems, and the bipolar plate 1 in the present disclosure can also avoid the uncontrollable deformation amount of the first electrode plate 11 and the second electrode plate 12 due to their too thin thickness by adjusting the pressure of the electrolyte entering the inner cavity 14, and will not affect the space size on both sides of the diaphragm 21.
[0039] In one embodiment of the present disclosure, the diameter of the spray holes 15 is less than 20 mm. By setting it in this way, it can be avoided that due to the too large diameter of the spray holes 15, the amount of the sprayed electrolyte is too much, resulting in a low utilization rate of the electrolyte. Moreover, if the diameter of the spray holes 15 is too large, it is necessary to ensure the speed of the electrolyte entering the inner cavity 14. The too fast liquid inlet speed will cause a large pressure of the electrolyte in the inner cavity 14, and the first electrode plate 11 and the second electrode plate 12 will also generate a large deformation amount, affecting the space size on both sides of the diaphragm 21 and further affecting the electrolysis efficiency.
[0040] In one embodiment of the present disclosure, see Figure 1 and Figure 2, a flow control nozzle 151 is provided in the spray hole 15. The flow rate of the electrolyte ejected from the spray hole 15 can be controlled by the flow control nozzle 151 to ensure that the flow rate of the electrolyte can be maintained at an appropriate value. On the one hand, it can avoid the situation of dry burning due to the too slow flow rate of the electrolyte, resulting in some parts of the diaphragm 21 not being sprayed with the electrolyte. On the other hand, it can avoid the situation that the flow rate of the electrolyte flowing into the inner cavity 14 is too fast due to the too fast flow rate of the electrolyte, resulting in deformation of the first electrode plate 11 and the second electrode plate 12 and affecting the electrolysis efficiency. Of course, in other embodiments, the flow rate of the electrolyte ejected from the spray hole 15 can also be controlled by other means. For example, the shape of the spray hole 15 can be changed, which can be determined according to the actual situation, and the present disclosure does not limit this.
[0041] In the second aspect of the present disclosure, a hydrogen production electrolytic cell is further provided, including the bipolar plate 1, the diaphragm 21, the second liquid inlet 22, the second exhaust port 23, and the liquid outlet 24 described in the above embodiments. Among them, the diaphragm 21 is located between two bipolar plates 1, and a diffusion layer, an electrode, a gasket, etc. can also be provided between the diaphragm 21 and the bipolar plate 1. The second liquid inlet 22 can be connected to the electrolyte delivery pipeline, is located at the bottom of the electrolytic cell 2, and is communicated with the first liquid inlet 16 on the bipolar plate 1 frame 13, and can transport the electrolyte in the electrolyte delivery pipeline to the inner cavity 14 of the bipolar plate 1 through the first liquid inlet 16. The second exhaust port 23 can be connected to the gas delivery pipeline of the electrolytic cell 2, is located at the top of the electrolytic cell 2, and is communicated with the first exhaust port 17 on the bipolar plate 1 frame 13, so that the gas flowing out through the first exhaust port 17 can flow out of the electrolytic cell 2 through the second exhaust port 23 for subsequent cleaning, storage processes, etc. The liquid outlet 24 can be communicated with the electrolyte recovery pipeline, and the unreacted electrolyte flowing down from the diaphragm 21 can be recovered through the liquid outlet 24, and then flows back into the inner cavity 14 through the electrolyte delivery pipeline for electrolysis again.
[0042] Of course, in other embodiments, the structure of the electrolytic cell 2 can also be different from the above embodiments. For example, the second liquid inlet 22, the second exhaust port 23, etc. are connected to different positions in the electrolytic cell 2, and the components provided between the diaphragm 21 and the bipolar plate 1 are different, etc. However, as long as the second liquid inlet 22, the second exhaust port 23, and the liquid outlet 24 can perform their corresponding functions, the specific structure can be changed according to the actual situation, such as the required electrolysis speed, hydrogen production output, or the quality of the hydrogen generated by electrolysis, etc., and the present disclosure does not limit this.
[0043] In an embodiment of the present disclosure, refer to Figure 4, two adjacent bipolar plates 1, the first plate 11, the second plate 12, and the pole frame 13 that are close to each other, and the diaphragm 21 located between the two bipolar plates 1 form an electrolysis cell. Each electrolysis cell is provided with a liquid outlet 24 and a second exhaust port 23. The number of the liquid outlet 24 and the second exhaust port 23 can be one or multiple, and can be specifically determined according to the ejection amount of the electrolyte and the generation amount of the gas.
[0044] In an embodiment of the present disclosure, the distance between the diaphragm 21 and the first plate 11 and the second plate 12 in the electrolysis cell is less than 10 mm. In this embodiment, the diaphragm 21 in the electrolysis cell is located at the middle position between the first plate 11 and the second plate 12, and the distance from the first plate 11 and the second plate 12 is 2 - 3 mm. Such a setting can control the distance that the electrolyte ejected from the spray holes 15 reaches the diaphragm 21, ensuring that the electrolyte can be sprayed on all positions of the diaphragm 21. On the one hand, it can improve the electrolysis efficiency of the electrolyte, and on the other hand, it can also avoid the dry burning phenomenon of the diaphragm 21.
[0045] In the third aspect of the present disclosure, a hydrogen production device is also provided. The hydrogen production device of the present disclosure includes the electrolytic cell 2, the hydrogen storage device 3, and the power device 4 described in the above embodiments, without a gas-liquid separation device. The hydrogen storage device 3 can store the hydrogen generated by the reaction, and the power device 4 can provide power for each component in the electrolytic cell 2. Of course, in other embodiments, according to different requirements, the hydrogen production device can also include a gas purification device, various safety devices, etc., and the present disclosure does not limit this.
[0046] When the hydrogen production device of the present disclosure performs electrolytic hydrogen production, first, the electrolyte is introduced into the inner cavity 14 of the bipolar plate 1 through the electrolyte channel, the first liquid inlet 16, and the second liquid inlet 22 in the electrolytic cell 2, and the speed of the electrolyte introduced into the inner cavity 14 is greater than the speed of the electrolyte ejected from the spray holes 15. After the inner cavity 14 is filled and the electrolyte is ejected from all the spray holes 15 onto the diaphragm 21, the power is turned on for electrolysis. As the electrolysis progresses, the unreacted electrolyte is recovered through the liquid outlet 24 on the electrolytic cell 2, and the gas generated by the reaction can flow out of the electrolytic cell 2 through the first exhaust port 17 and the second exhaust port 23 to the hydrogen storage device 3 for storage, which is convenient for subsequent transportation and use, etc. The hydrogen production device of the present disclosure does not need to be provided with a gas-liquid separation device, thereby reducing the cost of the hydrogen production device and the entry threshold of hydrogen production.
[0047] The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
[0048] In addition, it should be noted that, among the various specific technical features described in the above specific embodiments, without conflict, they can be combined in any suitable manner. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination manners.
[0049] Furthermore, any combinations can be made among the various different embodiments of the present disclosure, as long as they do not violate the idea of the present disclosure, and they should equally be regarded as the content disclosed by the present disclosure.
Claims
1. A bipolar plate, characterized in that, Comprising: A first electrode plate and a second electrode plate which are oppositely arranged, and a pole frame arranged around the edges of the first electrode plate and the second electrode plate. The first electrode plate, the second electrode plate and the pole frame enclose a hollow inner cavity for accommodating electrolyte; A plurality of spray holes are provided on the first electrode plate and the second electrode plate, and the plurality of spray holes are communicated with the inner cavity for spraying the electrolyte in the inner cavity; A first liquid inlet and a first exhaust port are provided on the pole frame. The first liquid inlet is communicated with the inner cavity for introducing electrolyte into the inner cavity, and the first exhaust port is used for discharging the gas generated by electrolysis.
2. The bipolar plate according to claim 1, characterized in that, The number of the spray holes in the vertical direction of the first electrode plate and the second electrode plate gradually increases from bottom to top.
3. The bipolar plate according to claim 1, wherein The spray holes are evenly distributed on the first electrode plate and the second electrode plate.
4. The bipolar plate according to claim 1, characterized in that, The spray holes gradually decrease from bottom to top on the first electrode plate and the second electrode plate, and the diameter of the spray holes located below is smaller than the diameter of the spray holes located above.
5. The bipolar plate according to claim 1, characterized in that, The thickness of the first electrode plate and the second electrode plate is 0.5 - 1 mm.
6. The bipolar plate according to claim 1, characterized in that The diameter of the spray holes is less than 20 mm.
7. The bipolar plate according to any one of claims 1 to 6, characterized in that, A flow control nozzle is provided in the spray holes.
8. A hydrogen production electrolyzer, characterized in that, Comprising: A plurality of bipolar plates according to any one of claims 1 to 6; A separator, the separator is located between two adjacent bipolar plates, and a diffusion layer, an electrode and a gasket are further provided between the separator and the bipolar plates; A second liquid inlet, the second liquid inlet is communicated with the first liquid inlet for introducing electrolyte into the inner cavity; A second exhaust port, the second exhaust port is communicated with the first exhaust port for discharging the gas generated by electrolysis; A liquid outlet, the liquid outlet is used for recovering the electrolyte sprayed from the bipolar plates.
9. The hydrogen production electrolyzer according to claim 8, characterized in that The mutually adjacent first electrode plate, second electrode plate, pole frame of two adjacent bipolar plates and the separator located between the two bipolar plates form an electrolysis cell. Each electrolysis cell is provided with a liquid outlet and a second exhaust port. The distance between the separator and its adjacent first electrode plate and second electrode plate in the electrolysis cell is less than 10 mm.
10. A hydrogen production device, characterized in that, Comprising: The hydrogen production electrolytic cell according to any one of claims 8 to 9, a hydrogen storage device and a power device.