Simulation detection system for comprehensive performance of bipolar plate of electrolytic cell

Abstract

The utility model discloses an electrolytic bath bipolar plate comprehensive performance simulation detection system. A bipolar plate assembly is arranged on a bottom plate; the cover plate is arranged at the top of the bipolar plate assembly, the anode sides of the bipolar plates face the side where the cover plate is located, and the cover plate is made of a transparent material; the isolation plate is arranged between two adjacent bipolar plates, a first airflow simulation unit is arranged on one side, facing the bipolar plate located above the isolation plate, of the isolation plate, and airflow needed by detection can be provided for the cathode side of the corresponding bipolar plate through the first airflow simulation unit. The bottom plate, the cover plate, the isolation plate and the bipolar plate are adopted to achieve simulated assembly of the electrolytic cell, water and gas are supplied to the bipolar plate assembly to simulate the actual working conditions of the bipolar plate on the anode side and the cathode side, the structural performance of a micropore flow channel network and the structural performance of a gas circulation network can be detected at the same time, and the actual working conditions of the bipolar plate can be better simulated; and the accuracy and reliability of simulation detection are improved.

Description

Technical Field

[0001] This utility model belongs to the field of hydrogen production technology by electrolyzers, and specifically relates to a comprehensive performance simulation and testing system for bipolar plates in electrolyzers. Background Technology

[0002] PEM (Proton Exchange Membrane) water electrolysis for hydrogen production utilizes a polymer electrolyte membrane to decompose water into hydrogen and oxygen, offering advantages such as high efficiency, compact design, and rapid response. PEM bipolar plates are a crucial component of the proton exchange membrane electrolyzer, supporting current transmission and the water electrolysis reaction. They are typically made of titanium alloys or other corrosion-resistant metals, possessing good electrical conductivity and mechanical strength.

[0003] Patent document CN224001527U discloses a thin PEM electrolyzer bipolar plate and electrolyzer with microporous channels. This bipolar plate improves hydrogen production efficiency by incorporating a microporous channel network on its anode side surface, utilizing numerous jet holes distributed across the network to spray water towards the membrane electrode unit. A gas flow network is also incorporated on the cathode side surface to guide the hydrogen generated thereon. The design structure and parameters of the microporous channel network and gas flow network on the bipolar plate directly affect its hydrogen production capacity and processing performance; therefore, simulation testing of the bipolar plate performance is necessary during the structural design process. Utility Model Content

[0004] The purpose of this invention is to provide a comprehensive performance simulation and testing system for bipolar plates in an electrolytic cell, so as to achieve comprehensive testing of the performance of the microporous flow channel network and gas flow network on the bipolar plate.

[0005] This utility model is achieved through the following technical solution:

[0006] An electrolytic cell bipolar plate comprehensive performance simulation and testing system is used for simulating and testing the performance of bipolar plates in a bipolar plate assembly. The bipolar plate assembly includes multiple bipolar plates stacked in layers. A microporous flow channel network is provided on the anode side of the bipolar plates to form a jet exiting from the jet holes on the anode side. A gas flow network is provided on the cathode side of the bipolar plates for guiding hydrogen gas flow. The system includes:

[0007] The bipolar plate assembly is mounted on the base plate.

[0008] A cover plate is disposed on top of the bipolar plate assembly, with the anode side of the bipolar plates facing the side where the cover plate is located. The cover plate is made of a transparent material.

[0009] An isolation plate is disposed between two adjacent bipolar plates. A first airflow simulation unit is located on the side of the isolation plate facing the bipolar plate above it. This first airflow simulation unit provides the required airflow for detection to the cathode side of the corresponding bipolar plate.

[0010] The jet morphology detection unit and / or jet height detection unit are used to detect the jet morphology and jet height of the jet formed by the bipolar plate located below the cover plate, respectively.

[0011] The jet pressure detection unit is used to detect the impact force of the jet formed by the bipolar plate located below it.

[0012] The outlet gas flow detection unit is used to detect the gas flow parameters of the hydrogen outlets located on both sides of the bipolar plate.

[0013] In some embodiments, the first airflow simulation unit includes an airflow cavity and a gas channel, one end of which is connected to the airflow cavity, and the gas channel can provide the airflow required for detection to the corresponding airflow cavity.

[0014] In some embodiments, the first airflow simulation unit includes an airflow corridor located in the middle of the airflow cavity and dividing the airflow cavity into left and right parts. A comb-tooth flow divider is provided between the airflow corridor and the airflow cavity. The comb-tooth flow divider is provided with a plurality of flow dividers arranged at intervals. The gas channel is connected to the airflow corridor, so that gas can enter the airflow corridor through the gas channel and flow into the airflow cavity located on both sides of the airflow corridor through the flow dividers.

[0015] In some embodiments, in the first airflow simulation unit, several diversion weirs are respectively arranged on both sides of the airflow cavity, and several diversion slots are respectively formed on both sides of the airflow cavity. The diversion weirs arranged opposite each other form an airflow corridor in the middle of the diversion slots. The gas channel is connected to the airflow corridor, so that the gas can enter the airflow corridor through the gas channel and enter each diversion slot through the airflow corridor.

[0016] In some embodiments, gas channels are provided at both ends of the airflow corridor, and air is introduced into the airflow corridor from both ends through the gas channels.

[0017] In some embodiments, a first airflow simulation unit is disposed on the side of the base plate facing the bipolar plate located above it.

[0018] In some embodiments, a second airflow simulation unit is provided on the side of the isolation plate and cover plate facing the bipolar plate located below it, and the second airflow simulation unit can provide the airflow required for detection to the anode side of the corresponding bipolar plate.

[0019] In some embodiments, the second airflow simulation unit includes an airflow chamber and a gas channel, one end of which is connected to the airflow chamber, and the gas channel can provide the airflow required for detection to the corresponding airflow chamber.

[0020] In some embodiments, the cover plate is provided with an inlet channel communicating with the inlet of the bipolar plate, an outlet channel communicating with the outlet of the bipolar plate, and an outlet channel communicating with the hydrogen outlet of the bipolar plate.

[0021] In some embodiments, a water supply unit and an air supply unit are also included, for providing the water flow and air flow required for detection, respectively.

[0022] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0023] The electrolytic cell is simulated by using a base plate, cover plate, isolation plate and bipolar plate, and water and gas are supplied to the bipolar plate assembly to simulate the actual working conditions of the bipolar plate on the anode side and cathode side. It can simultaneously detect the structural performance of the microporous flow channel network and gas flow network, and can better simulate the real working conditions of the bipolar plate, thus improving the accuracy and reliability of the simulation test.

[0024] By setting a first airflow simulation unit on the isolation plate and the base plate, a simulated airflow is formed on the cathode side of the bipolar plate. The gas flow rate, pressure and difference of the hydrogen outlets on both sides are detected by the outlet airflow detection unit, so as to detect and analyze the performance of the gas flow network.

[0025] By setting a second airflow simulation unit on the cover plate and the isolation plate, a detection environment in which the jet and airflow interact together is formed on the anode side of the bipolar plate, so as to better simulate the influence of airflow on the jet on the anode side. The jet shape detection unit, jet height detection unit, and jet pressure detection unit are used to detect the shape, height and impact force of the jet under the current working conditions, so that the detection results can better match the real working conditions of the bipolar plate and improve the detection accuracy of the bipolar plate with microporous flow channels. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the anode side structure of a bipolar plate with microporous flow channels according to an embodiment of the present invention.

[0028] Figure 2This is a schematic diagram of the cathode side structure of a bipolar plate with a gas flow network according to an embodiment of the present invention.

[0029] Figure 3 This is a schematic diagram of a detection state structure of the simulation detection system according to an embodiment of the present utility model.

[0030] Figure 4 This is a cross-sectional view of another detection state of the simulation detection system according to an embodiment of the present invention.

[0031] Figure 5 for Figure 4 A partial schematic diagram of point A in the middle.

[0032] Figure 6 This is a schematic diagram of the structure of the first airflow simulation unit / second airflow simulation unit on the isolation plate in this embodiment of the present invention.

[0033] Figure 7 This is a schematic diagram of another embodiment of the first airflow simulation unit on the isolation plate in this utility model.

[0034] Figure 8 This is a schematic diagram of the second airflow simulation unit structure on the cover plate in an embodiment of this utility model.

[0035] in:

[0036] 10. Cover plate; 11. Groove; 12. Water inlet channel; 13. Water outlet channel; 14. Air outlet channel;

[0037] 20. Base plate;

[0038] 30. Isolation panel;

[0039] 40. Bipolar plate; 41. Inlet; 42. Outlet; 43. Microporous flow channel unit; 44. Detection area; 45. Gas flow network; 46. Hydrogen outlet.

[0040] 50. Laser displacement sensing array;

[0041] 60. Pressure-sensitive membrane;

[0042] 70. Camera; 71. Background light source;

[0043] 81. Gas passage; 82. Airflow chamber; 83. Airflow corridor; 84. Comb-tooth flow divider; 85. Flow divider; 86. Flow divider weir; 87. Flow divider groove.

[0044] 90. Sealing components. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0046] like Figure 1 and Figure 2 This is a bipolar plate with microporous channels and gas channels. In this type of bipolar plate, the design parameters of the microporous channels directly affect the contact effect between the water flow and the membrane electrode unit, thus affecting the hydrogen production efficiency. The design parameters of the gas channels also affect the hydrogen conduction effect. Therefore, in the design of bipolar plates, testing the performance of the microporous channels on the anode side and the gas channels on the cathode side can provide effective feedback and verification for optimizing the bipolar plate design parameters, ensuring the performance of the bipolar plate.

[0047] Reference Figure 3 and Figure 4 In some embodiments of this utility model, the comprehensive performance simulation and testing system for bipolar plates in an electrolytic cell includes a base plate 20, a cover plate 10, and an isolation plate 30, with the bipolar plate assembly to be tested disposed between the base plate 20 and the cover plate 10.

[0048] The bipolar plate assembly includes multiple bipolar plates 40 arranged in a stacked configuration, for example, two bipolar plates stacked together. (See reference...) Figure 1 The bipolar plate 40 is provided with an inlet 41 and an outlet 42. A microporous channel network is provided on the anode side of the bipolar plate. The microporous channel network includes microporous channels and jet holes communicating with the microporous channels, allowing water flow in the microporous channels to be ejected vertically from the jet holes towards the membrane electrode unit under pressure. The jet holes of the microporous channel network cover the active area on the anode side. During operation, water flows into the microporous channels from the inlet and is ejected from the jet holes towards the membrane electrode unit, ensuring sufficient contact between the water flow and the membrane electrode unit. Water from the anode side and the microporous channels flows out through the outlet. (Refer to...) Figure 2 A gas flow network is provided on the cathode side of the bipolar plate. Accordingly, the gas flow network 45 guides the hydrogen gas on the cathode side to the hydrogen gas outlets 46 located on both sides of the bipolar plate, so that the hydrogen gas generated on the cathode side can flow out quickly from the hydrogen gas outlets.

[0049] The base plate 20 is set at the bottom of the bipolar plate assembly to be tested, and the cover plate 10 is set at the top of the bipolar plate to be tested. An isolation plate 30 is set between adjacent bipolar plates in the bipolar plate assembly. Together they form a structure that can simulate an electrolytic cell. The anode side of the bipolar plate is set towards the side where the cover plate is located.

[0050] From top to bottom, such as Figure 4Sealing elements 90 are respectively provided between the cover plate 10 and the bipolar plate 40, between the bipolar plate 40 and the isolation plate 30, and between the bipolar plate 40 and the bottom plate 20, forming a sealed space between the cover plate, the bipolar plate and the bottom plate to simulate the structure of an electrolytic cell.

[0051] The cover plate 10 is made of a transparent material, such as acrylic sheet or other transparent plastic material.

[0052] In this embodiment, a first airflow simulation unit is provided on the side of the isolation plate 30 facing the bipolar plate located above it. The first airflow simulation unit can provide the airflow required for detection to the cathode side of the corresponding bipolar plate, thereby simulating the generation of hydrogen on the cathode side.

[0053] During testing, a jet morphology detection unit is used to detect the jet morphology formed by the bipolar plate located below the cover plate; a jet height detection unit is used to detect the jet height formed by the jet formed by the bipolar plate located below the cover plate; a jet pressure detection unit is used to detect the magnitude of the jet impact force formed by the jet formed by the bipolar plate located below it; and an outlet gas flow detection unit is used to detect the gas flow parameters at the hydrogen outlets located on both sides of the bipolar plate, such as gas flow rate and gas pressure. Based on the above detection data, the performance of the microporous channel network and gas flow network of the bipolar plate is analyzed, realizing the detection of the comprehensive performance of the bipolar plate.

[0054] A jet height detection unit is installed above the transparent cover plate 10. The jet height detection unit can detect the height of the water jet from the jet hole through the transparent cover plate.

[0055] In some embodiments, such as Figure 4 The jet height detection unit includes a laser displacement sensor array 50, which includes laser displacement sensors arranged in an array. The laser displacement sensors are respectively set at positions directly opposite the jet holes in the area to be detected, and measure the jet height of the corresponding jet holes.

[0056] Laser displacement sensors are based on laser triangulation and measure the height of a jet of water by detecting the reflection position of a laser beam at the top of the jet column; for example, Keyence's LK-G series laser displacement sensors can be used.

[0057] Because the spacing between the jet holes in the microporous flow channel is small, it is difficult to set corresponding laser displacement sensors at the corresponding positions of all jet holes in the microporous flow channel to detect the water flow in each jet hole. Therefore, in this embodiment, the position of the laser displacement sensor in the laser displacement sensor array is designed. For example, for each microporous flow channel unit 43, along the main flow channel direction, the area near the two ends and the middle of the main flow channel is selected as the detection area 44. In each detection area, along the first-level branch flow channel direction, the jet holes of the short branch flow channels located at both ends and the middle are selected as the detection hole positions. The position of the laser displacement sensor in the laser displacement sensor array is arranged according to the position of the detection hole position.

[0058] Based on the selected detection area, comparing the differences in jet height between different detection areas can be used to optimize the design parameters of the micro-orifice channel (such as the width / height of the main channel, primary branch channel, and short branch channel).

[0059] The height of the jet stream in each test area is measured using a laser displacement sensor array, and the performance of different regions of the micro-orifice channel is analyzed based on the jet height. Simultaneously, the laser displacement sensor array can also detect fluctuations in the jet height to assess the impact of different operating conditions (pressure, temperature, etc.) on the jet height.

[0060] To reduce the influence of the cover plate material on the refraction and reflection of laser light as it passes through the cover plate, the area on the cover plate corresponding to the active area on the anode side is thinned, so that the thickness of this area on the cover plate is less than the thickness of other locations.

[0061] Similarly, an anti-reflective film, such as a multilayer dielectric film (TiO2 / SiO2), can be applied to both sides of the cover plate corresponding to the active region on the anode side. Alternatively, a wedge angle of 45° can be machined at the corresponding position on the cover plate to compensate for the effect of light path refraction.

[0062] For the thinning treatment performed on the cover plate, refer to Figure 3 A groove 11 is formed at the position corresponding to the active area on the anode side of the cover plate 10. The laser displacement sensing array 50 is fitted into the groove 11. Through the cooperation between the groove and the laser displacement sensing array, the laser displacement sensing array is assisted in positioning, ensuring that the laser displacement sensor corresponds to the position of the jet to be detected.

[0063] In some embodiments, a jet pressure detection unit is provided between adjacent bipolar plates 40 to detect the magnitude of the impact force of water jets ejected from each jet hole on the membrane electrode unit.

[0064] Reference Figure 5The jet pressure detection unit includes a pressure-sensitive membrane 60 disposed on one side of the isolation plate, and the pressure-sensitive membrane 60 is disposed directly opposite the anode side of the bipolar plate located below it.

[0065] The pressure-sensitive membrane is based on microcapsule color development technology. The microcapsules inside the membrane encapsulate a color developer. When subjected to pressure impact, the microcapsules rupture and release the color developer. The color density of the pressure-sensitive membrane is directly proportional to the pressure. By analyzing the color pattern on the pressure-sensitive membrane, the magnitude and difference of the jet pressure in each region of the jet orifice can be analyzed.

[0066] The pressure-sensitive membrane can be made of Fuji Prescale pressure measuring film or similar products.

[0067] The jet pressure detection unit can also use a MEMS pressure sensor array unit. The MEMS pressure sensor array unit uses a flexible PCB substrate, on which pressure sensing units are distributed. The pressure sensing units correspond to the positions of the jet holes to be detected. The arrangement of the pressure sensing units can adopt the same arrangement method as the laser displacement sensor to realize the measurement of the height and pressure of the jet from the jet holes at the same position.

[0068] Similarly, comparing the differences in the magnitude of the jet impact force at different locations can be used to optimize the design parameters of micro-orifice channels (such as the width / height of the main channel, primary branch channels, and short branch channels).

[0069] Reference Figure 3 The jet morphology detection unit uses a camera 70 to capture the shape of the water jet emerging from the jet orifice from above the cover plate, enabling analysis of the jet morphology. The camera 70 is a high-speed camera that captures the jet morphology after the jet has stabilized. By analyzing the jet morphology images at different times, the stability of the jet and the verticality of the jet orifice are analyzed.

[0070] A background light source 71 can be installed on the outside of the cover plate 10, illuminating the active area on the anode side of the bipolar plate to provide background light for the water flow ejected from the jet hole. The background light source can use green light with a wavelength of 520nm, which is injected at a small angle from the side of the cover plate to make the jet show a green outline, increase the contrast between the jet and the environment, improve the quality of the jet pattern image, and facilitate the processing and analysis of the jet pattern.

[0071] Both jet height detection and jet shape detection are performed above the cover plate. To avoid interference between the two during detection, jet height detection and jet shape detection are performed separately. For example, after using a camera to capture the jet shape, the laser displacement sensor array is then switched to detect the jet height.

[0072] Reference Figure 6 and Figure 7 The first airflow simulation unit includes an airflow chamber 82 and a gas channel 81. The airflow chamber 82 corresponds to the active region on the anode side, and one end of the gas channel 81 is connected to the airflow chamber 82, providing airflow into the airflow chamber. In the assembled state, the airflow chamber and the corresponding bipolar plate form a closed cavity structure. The simulated gas flows into the airflow chamber through the gas channel, forming an airflow covering the entire active region on the cathode side to simulate the hydrogen gas generated on the cathode side.

[0073] like Figure 6 As shown, in some embodiments, the first airflow simulation unit further includes an airflow corridor 83. The airflow corridor 83 is located in the middle of the airflow cavity 82 and divides the airflow cavity 82 into left and right parts. The airflow corridor 83 and the airflow cavity 82 are isolated by a comb-tooth diversion baffle 84, or in other words, the airflow corridor 83 is formed in the airflow cavity 82 by the comb-tooth diversion baffle 84 set in the airflow cavity. The comb-tooth diversion baffle 84 is provided with a plurality of diversion ports 85 arranged at intervals, so that the airflow corridor and the airflow cavity are connected through the diversion ports. At this time, the gas channel is connected to the airflow corridor, so that the gas can enter the airflow corridor through the gas channel and flow into the airflow cavities located on both sides of the airflow corridor through the diversion ports. Through the setting of the airflow corridor, the gas first enters the airflow corridor through the gas channel, and then is evenly diverted to the airflow cavities on both sides through the diversion ports, ensuring that the airflow can be evenly distributed to all areas of the anode-side active region.

[0074] like Figure 7 As shown, in some embodiments, in the first airflow simulation unit, several diversion weirs 86 are respectively arranged on both sides of the airflow cavity 82, and several diversion slots 87 are respectively formed on both sides of the airflow cavity 82. The diversion weirs arranged opposite each other form an airflow corridor 83 in the middle of the diversion slots. The gas channel 81 is connected to the airflow corridor 83, so that the gas can enter the airflow corridor 83 through the gas channel 81 and then enter each diversion slot 87 through the airflow corridor 83. Similarly, in this embodiment, the airflow corridor 83 and the diversion slots 87 are formed in the airflow cavity 82, so that the gas can be quickly distributed to various areas on the cathode side.

[0075] The isolation plate 30 is provided with gas channels 81 at both ends of the airflow corridor 83. Gas is introduced into the airflow corridor 83 from both ends through the gas channels on both sides to achieve a better airflow effect.

[0076] In some embodiments, a first airflow simulation unit is disposed on the side of the base plate 20 facing the bipolar plate located above it, as shown in the figure. Figure 4 At this point, simulated gas can be introduced into the cathode side of the two bipolar plates through the first airflow simulation unit of the isolation plate and the base plate to achieve better simulation detection effect.

[0077] In actual operation, a certain amount of oxygen is generated on the anode side of the bipolar plate in an electrolytic cell. The flow of oxygen gas will have a certain impact on the jet. Therefore, it is necessary to simulate the working conditions on the anode side more realistically during the test to effectively detect the jet state.

[0078] In some embodiments, a second airflow simulation unit is provided on the side of both the cover plate 10 and the partition plate 30 facing the bipolar plate located below them. The second airflow simulation unit can provide airflow to the anode side of the corresponding bipolar plate, thereby simulating the airflow formed by oxygen generated on the anode side, and thus simulating the effect of the anode side airflow on the jet state. For example, the airflow simulation unit of the cover plate can provide airflow to the anode side of the bipolar plate located below the cover plate, and the airflow simulation unit of the partition plate can provide airflow to the anode side of the bipolar plate located below it.

[0079] Reference Figure 6 and Figure 8 The second airflow simulation unit can adopt the same structure as the first airflow simulation unit, such as including an airflow cavity 82, a gas channel 81 and an airflow corridor 83. The airflow corridor 83 is located in the middle of the airflow cavity 82 and divides the airflow cavity 82 into left and right parts. The airflow corridor 83 and the airflow cavity 82 are isolated by a comb-tooth flow divider 84.

[0080] like Figure 6 As shown, based on the arrangement of the airflow cavity of the isolation plate 30, the pressure-sensitive membrane or MEMS pressure sensor array unit can be correspondingly arranged at the bottom of the airflow cavity.

[0081] The depths of the airflow chambers in the second airflow simulation unit of the cover plate and the isolation plate can be set to have certain differences. For example, the depth of the airflow chamber of the cover plate can be set to be greater than the height of the jet to facilitate the detection of the jet height, while the depth of the airflow chamber of the isolation plate can be set to simulate the distance between the actual jet hole and the membrane electrode unit to detect the magnitude of the impact force of the jet on the membrane electrode unit.

[0082] This invention employs a water supply system to provide circulating water for the testing process. The water supply system can adjust and control the water pressure and flow rate in real time to better simulate the actual working conditions of the bipolar plates in the electrolytic cell. A gas supply system is used to provide the airflow required for testing. The gas supply system pipelines are connected to the inlet ends of the gas channels. Quick-connect fittings are installed on the inlet ends of the gas channels on the cover plate to facilitate connection with the gas supply system pipelines.

[0083] like Figure 4 and Figure 8The cover plate 10 is provided with an inlet channel 12 that communicates with the inlet of the bipolar plate and an outlet channel 13 that communicates with the outlet of the bipolar plate. Quick connectors are provided on the inlet channel 12 and the outlet channel 13 respectively. The inlet channel and the outlet channel of the cover plate are connected to the pipeline of the water supply system through the quick connectors to provide circulating water for the detection process of the detection device.

[0084] like Figure 8 The cover plate is provided with an outlet channel 14 that communicates with the hydrogen outlet 46 of the bipolar plate. Correspondingly, the outlet channels 14 on both sides of the cover plate 10 are connected to the outlet airflow detection unit to detect the gas flow rate and pressure of the hydrogen outlets on both sides. The outlet airflow detection unit can be, for example, a pipeline system connected to the outlet channel and flow sensors, pressure sensors, etc. installed on the pipeline system.

[0085] Reference Figure 6 The isolation plate 30 is provided with channels that are respectively connected to the water inlet, water outlet and hydrogen outlet of the bipolar plate.

[0086] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", and "outer" used to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0087] Furthermore, the use of terms such as "horizontal" or "vertical" in the description of this utility model does not imply that the component is required to be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0088] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0089] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A comprehensive performance simulation and testing system for bipolar plates in an electrolytic cell, characterized in that, For simulating and testing the performance of bipolar plates in a bipolar plate assembly, the bipolar plate assembly includes multiple bipolar plates arranged in a stacked manner. A microporous flow channel network is provided on the anode side of the bipolar plates to form a jet that exits from the jet holes on the anode side. A gas flow network is provided on the cathode side of the bipolar plates for guiding hydrogen gas. It includes: The bipolar plate assembly is mounted on the base plate. A cover plate is disposed on top of the bipolar plate assembly, with the anode side of the bipolar plates facing the side where the cover plate is located. The cover plate is made of a transparent material. An isolation plate is disposed between two adjacent bipolar plates. A first airflow simulation unit is located on the side of the isolation plate facing the bipolar plate above it. This first airflow simulation unit provides the required airflow for detection to the cathode side of the corresponding bipolar plate. The jet morphology detection unit and / or jet height detection unit are used to detect the jet morphology and jet height of the jet formed by the bipolar plate located below the cover plate, respectively. The jet pressure detection unit is used to detect the impact force of the jet formed by the bipolar plate located below it. The outlet gas flow detection unit is used to detect the gas flow parameters of the hydrogen outlets located on both sides of the bipolar plate.

2. The comprehensive performance simulation and testing system for bipolar plates in an electrolytic cell according to claim 1, characterized in that, The first airflow simulation unit includes an airflow chamber and a gas channel. One end of the gas channel is connected to the airflow chamber, and the gas channel can provide the airflow required for detection to the corresponding airflow chamber.

3. The comprehensive performance simulation and testing system for bipolar plates in an electrolytic cell according to claim 2, characterized in that, The first airflow simulation unit includes an airflow corridor, which is located in the middle of the airflow cavity and divides the airflow cavity into left and right parts. A comb-tooth flow divider is provided between the airflow corridor and the airflow cavity. The comb-tooth flow divider is provided with a number of flow dividers arranged at intervals. The gas channel is connected to the airflow corridor, so that gas can enter the airflow corridor through the gas channel and flow into the airflow cavity located on both sides of the airflow corridor through the flow dividers.

4. The comprehensive performance simulation and testing system for bipolar plates in an electrolytic cell according to claim 2, characterized in that, In the first airflow simulation unit, several diversion weirs are set on both sides of the airflow cavity, and several diversion slots are formed on both sides of the airflow cavity. The diversion weirs set opposite each other form an airflow corridor in the middle of the diversion slots. The gas channel is connected to the airflow corridor, so that the gas can enter the airflow corridor through the gas channel and enter each diversion slot through the airflow corridor.

5. The comprehensive performance simulation and testing system for bipolar plates in an electrolytic cell according to claim 3 or 4, characterized in that, Gas channels are provided at both ends of the airflow corridor, through which air is introduced into the airflow corridor from both ends.

6. The comprehensive performance simulation and testing system for bipolar plates of an electrolytic cell according to any one of claims 1-4, characterized in that, The first airflow simulation unit is provided on the side of the base plate facing the bipolar plate located above it.

7. The comprehensive performance simulation and testing system for bipolar plates in an electrolytic cell according to claim 1, characterized in that, The isolation plate and cover plate are provided with a second airflow simulation unit on the side facing the bipolar plate below them. The second airflow simulation unit can provide the airflow required for detection to the anode side of the corresponding bipolar plate.

8. The comprehensive performance simulation and testing system for bipolar plates in an electrolytic cell according to claim 7, characterized in that, The second airflow simulation unit includes an airflow chamber and a gas channel. One end of the gas channel is connected to the airflow chamber, and the gas channel can provide the airflow required for detection to the corresponding airflow chamber.

9. The comprehensive performance simulation and testing system for bipolar plates in an electrolytic cell according to claim 1 or 7, characterized in that, The cover plate is provided with an inlet channel connected to the inlet of the bipolar plate, an outlet channel connected to the outlet of the bipolar plate, and an outlet channel connected to the hydrogen outlet of the bipolar plate.

10. The comprehensive performance simulation and testing system for bipolar plates in an electrolytic cell according to claim 1 or 7, characterized in that, It also includes a water supply unit and an air supply unit, which are used to provide the water flow and air flow required for the test, respectively.

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