Functional template for bipolar plate performance detection and bipolar plate performance detection system

Abstract

The utility model discloses a kind of functional templates and bipolar plate performance detection systems for bipolar plate performance detection, comprising: first template, first gas distribution unit is arranged on the side surface of first template;Second template, plenum is arranged in the middle position of the side surface of second template, the plenum is arranged along second template length direction, second gas distribution unit is arranged on the other side surface of second template, second template is provided with gas passage communicated with plenum, for supplying the gas required for detection in plenum.Functional template adopts the combination structure of first template and second template, closed plenum is formed in functional template, the airflow required for detection can be simultaneously supplied to first gas distribution unit, second gas distribution unit through the plenum, the setting of gas passage, corresponding pipeline in functional template and detection system is simplified, better detection airflow simulation effect can be realized.

Description

Technical Field

[0001] This utility model belongs to the field of electrolytic cell technology, specifically relating to a functional template and bipolar plate performance testing system for bipolar plate performance testing. 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. The PEM bipolar plate is a crucial component of the PEM electrolyzer, used to realize the electrolysis reaction of water.

[0003] Patent document CN224001527U discloses a thin PEM electrolyzer bipolar plate and electrolyzer with microporous channels. This bipolar plate improves hydrogen production efficiency by using a microporous channel network on the anode side, through which numerous jet holes distributed on the network spray water towards the membrane electrode unit. A gas flow network is provided on the cathode side to guide the hydrogen generated there. The structure and design parameters of the microporous channel network and gas flow network directly affect the bipolar plate's performance; therefore, it is necessary to simulate and test the performance of the microporous channel network and gas flow network under actual operating conditions during the structural design process. Utility Model Content

[0004] The purpose of this invention is to provide a functional template and a bipolar plate performance testing system for bipolar plate performance testing, so as to realize the performance simulation testing 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] Functional templates for bipolar plate performance testing, used for performance testing of the microporous flow channel network on the anode side and the gas flow network on the cathode side of bipolar plates, including:

[0007] A first template, wherein a first gas distribution unit is provided on one side surface of the first template;

[0008] The second template has a gas chamber located in the middle of one side surface, the gas chamber being arranged along the length of the second template. A second gas distribution unit is located on the other side surface of the second template. The second template has a gas channel communicating with the gas chamber for supplying the gas required for detection into the gas chamber.

[0009] The first template is stacked on the second template, and the other side surface of the first template covers the opening end of the air chamber, so that the air chamber forms a closed cavity. The first template is provided with a plurality of first connecting holes at the corresponding air chamber positions, and the second template is provided with a plurality of second connecting holes in the air chamber, so that the gas in the air chamber can flow into the first gas distribution unit and the second gas distribution unit through the first connecting holes and the second connecting holes, respectively. The first gas distribution unit and the second gas distribution unit are respectively used to distribute the inflowing gas to the surface of their respective sides.

[0010] In some embodiments, the first gas distribution unit includes an airflow corridor and a plurality of diversion channels distributed on both sides of the airflow corridor. The airflow corridor is arranged along the length direction of the first template and communicates with the first connecting hole. The diversion channels are arranged along the width direction of the first template and are arranged at intervals along the length direction of the airflow corridor. One end of the diversion channel is connected to the airflow corridor.

[0011] In some embodiments, the second gas distribution unit includes airflow chambers disposed on both sides of the gas chamber, and the second connecting holes are respectively disposed on the sidewalls on both sides of the gas chamber and connected to the airflow chambers.

[0012] In some embodiments, gas channels are provided at both ends of the gas chamber, and the gas required for detection is introduced into the gas chamber from both ends through the gas channels.

[0013] In some embodiments, the air chamber has a gradually decreasing cross-sectional area in the direction from both ends toward the center.

[0014] In some embodiments, the diameters of the first connecting hole and the second connecting hole gradually increase from both ends of the air chamber toward the center.

[0015] In some embodiments, the first connecting hole and the second connecting hole are staggered along the length of the air chamber.

[0016] In some embodiments, the first template is provided with a sealing lip that mates with the air chamber on the side facing the second template. The sealing lip is inserted into the air chamber and forms a sealing fit with the inner wall of the air chamber.

[0017] On the other hand, this utility model also provides a bipolar plate performance testing system, including a base plate, a cover plate and a functional template;

[0018] The functional template is disposed between two bipolar plates and together with the two bipolar plates forms a bipolar plate assembly. The first gas distribution unit of the first template is disposed facing the cathode side of the bipolar plate above it, and the second gas distribution unit of the second template is disposed facing the anode side of the bipolar plate below it.

[0019] The bipolar plate assembly is mounted on the base plate, and the cover plate is mounted on the bipolar plate assembly. The cover plate is made of a transparent material.

[0020] In some embodiments, it also includes:

[0021] The jet morphology detection unit is used to detect the jet morphology of the jet formed by the bipolar plate located below the cover plate;

[0022] The jet height detection unit is used to detect the jet height of the jet formed by the bipolar plate located below the cover plate;

[0023] The jet pressure detection unit is used to detect the impact force of the jet formed by the bipolar plate located below the second template;

[0024] The outlet airflow detection unit is used to detect the airflow parameters of the hydrogen outlets on both sides of the bipolar plate.

[0025] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0026] The functional template of this utility model adopts a combination structure of a first template and a second template, forming a closed air chamber inside the functional template. Through this air chamber, the airflow required for detection can be supplied to the first gas distribution unit and the second gas distribution unit simultaneously. This simplifies the setting of gas channels and corresponding pipelines in the functional template and detection system. Furthermore, by using the air chamber to buffer and transition the introduced gas, the uniformity of gas distribution on both sides of the functional template can be improved, and a better detection airflow simulation effect can be achieved.

[0027] The functional template of this utility model adopts a combination of a first template and a second template, which makes the forming of the gas distribution unit on the first template and the second template simpler and facilitates the processing and forming of the functional template.

[0028] This utility model's testing system uses a base plate, cover plate, functional template, and bipolar plate to simulate the assembly of an electrolytic cell. It can effectively simulate the actual working conditions of the bipolar plate on the anode and cathode sides, and simultaneously achieve performance testing of the bipolar plate's microporous flow channel network and gas flow network. Attached Figure Description

[0029] 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.

[0030] Figure 1 This is a schematic diagram of the structure on one side of the first template and the first gas distribution unit in an embodiment of this utility model.

[0031] Figure 2 This is a schematic diagram of the other side of the first template in an embodiment of this utility model.

[0032] Figure 3 This is a schematic diagram of one side of the second template air chamber in an embodiment of this utility model.

[0033] Figure 4 This is a schematic diagram of the structure on one side of the second template and the second gas distribution unit in an embodiment of this utility model.

[0034] Figure 5 This is a cross-sectional view of the functional template combination state in an embodiment of this utility model.

[0035] Figure 6 This is a schematic diagram of the detection system structure according to an embodiment of the present invention.

[0036] Figure 7 This is a cross-sectional schematic diagram of the detection system according to an embodiment of the present invention.

[0037] Figure 8 This is a schematic diagram of the back structure of the cover plate of the detection system according to an embodiment of the present invention.

[0038] in:

[0039] 11. First template; 111. First connecting hole; 112. Airflow channel; 113. Diversion groove; 114. Sealing lip;

[0040] 12. Second template; 121. Air chamber; 122. Second connecting hole; 123. Airflow cavity; 124. Gas channel;

[0041] 20. Bipolar plate;

[0042] 30. Cover plate; 301. Water inlet channel; 302. Water outlet channel; 303. Air outlet channel;

[0043] 40. Base plate;

[0044] 50. Laser displacement sensing array;

[0045] 60. Pressure-sensitive membrane;

[0046] 70. Camera;

[0047] 80. Sealing components. Detailed Implementation

[0048] 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.

[0049] The thin PEM electrolyzer bipolar plate with microporous channels disclosed in CN224001527U features a microporous channel network on the anode side and a gas flow network on the cathode side of the bipolar plate 20. Water inlets and outlets are located at both ends of the bipolar plate 20, and hydrogen outlets are located on both sides of the bipolar plate. Jet holes are provided on the microporous channel network, allowing water flowing into the network to be ejected from the jet holes under pressure, forming a jet that makes full contact with the membrane electrode unit, thus achieving water electrolysis. The gas flow network on the cathode side guides the hydrogen generated on the cathode side towards the hydrogen outlets on both sides of the bipolar plate, enabling the hydrogen to be rapidly discharged.

[0050] The design parameters of the microporous flow channel network and gas flow network on the bipolar plate directly affect the water electrolysis performance of the bipolar plate. In this embodiment, the design parameters of the microporous flow channel network and gas flow network are evaluated by detecting the performance indicators such as the jet shape, height, and impact force, as well as the hydrogen flow parameters at the hydrogen outlets on both sides.

[0051] In some embodiments of this utility model, reference is made to... Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The functional template is used for performance testing of the microporous flow channel network on the anode side and the gas flow network on the cathode side of the bipolar plate, including:

[0052] The first template 11 has a first gas distribution unit disposed on one side surface;

[0053] The second template 12 has an air chamber 121 located in the middle of one side surface, such as... Figure 3 As shown, the gas chamber 121 is an open cavity structure. The gas chamber 121 is arranged along the length direction of the second template. A second gas distribution unit is arranged on the other side surface of the second template 12. The second template 12 is provided with a gas channel 124 that communicates with the gas chamber for supplying the gas required for detection into the gas chamber.

[0054] The first template 11 is stacked on the second template 12, and the other side surface of the first template 11 covers the opening end of the air chamber 121, so that the air chamber forms a closed cavity. The first template 11 is provided with a plurality of first connecting holes 111 at the corresponding air chamber positions, and the second template 12 is provided with a plurality of second connecting holes 122 in the air chamber, so that the gas in the air chamber can flow into the first gas distribution unit and the second gas distribution unit through the first connecting holes and the second connecting holes respectively. The first gas distribution unit and the second gas distribution unit are respectively used to distribute the inflowing gas to the surface on their respective sides.

[0055] In the functional template composed of the first template and the second template, a closed gas chamber is formed inside the functional template. The gas chamber is connected to the first gas distribution unit and the second gas distribution unit through the first connecting hole and the second connecting hole, respectively.

[0056] During testing, gas is introduced into the gas chamber through the gas channel, and then enters the side where the first gas distribution unit and the second gas distribution unit are located through the first connecting hole and the second connecting hole, respectively. The first gas distribution unit and the second gas distribution unit guide the incoming gas, thereby forming a uniform simulated airflow on the cathode side and anode side of the bipolar plate during testing. This realizes the airflow state of the bipolar plate under real working conditions, thus effectively ensuring the accuracy and reliability of bipolar plate performance testing.

[0057] like Figure 1 As shown, in some embodiments, the first gas distribution unit includes an airflow corridor 112 and a plurality of diversion channels 113 distributed on both sides of the airflow corridor. The airflow corridor 112 is arranged along the length direction of the first template and is connected to the first connecting hole 111. The diversion channels 113 are arranged along the width direction of the first template and are arranged at intervals along the length direction of the airflow corridor. One end of each diversion channel 113 is connected to the airflow corridor 112.

[0058] Generally, the first connecting hole 111 is located in the middle of the airflow corridor and covers the entire length of the airflow corridor, so that the airflow entering from the first connecting hole 111 can be evenly distributed throughout the entire airflow corridor 112.

[0059] The flow channels on both sides serve to guide the airflow. The gas in the airflow corridor enters the horizontally arranged airflow channel and is guided and distributed to the entire area on the cathode side.

[0060] To achieve better airflow distribution, the diversion channel is designed. For example, from one end connected to the airflow corridor to the other end, the diversion channel has a gradually increasing cross-section structure, which allows the airflow to flow better to the far end.

[0061] like Figure 4As shown, in some embodiments, the second gas distribution unit includes two airflow chambers 123 disposed on both sides of the gas chamber, and the second connecting holes 122 are respectively disposed on the side walls on both sides of the gas chamber and connected to the airflow chambers 123, so that the gas chamber and the airflow chamber are connected.

[0062] The gas inside the gas chamber 121 can enter the airflow chambers on both sides through the second connecting hole, so that the airflow can be distributed to the entire area of ​​the anode side. The bottom of the airflow chamber is set as a plane to facilitate the installation of the pressure-sensitive membrane.

[0063] Generally, the second connecting hole 122 covers the entire length of the side wall of the air chamber, so that the airflow entering from the second connecting hole can be evenly distributed to various positions of the airflow chamber.

[0064] In some embodiments, gas channels 124 are respectively provided at both ends of the gas chamber, and the gas required for detection is introduced into the gas chamber from both ends of the gas chamber through the gas channels, so that the gas to be detected can quickly fill the entire gas chamber.

[0065] In some embodiments, the gas chamber 121 has a gradually decreasing cross-section structure from both ends toward the center, so that the gas can be quickly distributed throughout the gas chamber, ensuring uniformity at each position from the gas chamber into the first gas distribution unit and the second gas distribution unit.

[0066] In some embodiments, the apertures of the first connecting hole 111 and the second connecting hole 122 gradually increase from both ends of the air chamber toward the center, so as to further improve the uniformity of airflow distribution and airflow performance when the air flows from the air chamber to the first gas distribution unit and the second gas distribution unit.

[0067] In some embodiments, the first connecting hole 111 and the second connecting hole 122 are staggered along the length of the air chamber. The staggered arrangement of the first and second connecting holes can further improve the airflow performance inside the functional template.

[0068] In some embodiments, the first template 11 is provided with a sealing lip 114 on the side facing the second template, which cooperates with the air chamber. The sealing lip 114 is inserted into the air chamber and forms a sealing fit with the inner wall of the air chamber. Through the cooperation between the sealing lip and the air chamber, a better seal can be formed between the first template and the air chamber; a sealing ring can be provided between the sealing lip and the inner wall of the air chamber to further ensure the airtight performance of the air chamber.

[0069] A notch is provided on the sealing lip 114, and the notch corresponds to the position of the second connecting hole in the air chamber, so as to avoid obstructing the second connecting hole.

[0070] A sealing element can be provided between the first template 11 and the second template 12 to enable a good sealing fit between the first template and the second template.

[0071] On the other hand, this utility model also relates to a bipolar plate performance testing system, referring to... Figure 6 and Figure 7 The bipolar plate performance testing system includes a cover plate 30, a functional template, and a base plate 40.

[0072] The functional template is set between the two bipolar plates and together with the two bipolar plates to form a bipolar plate assembly. The first gas distribution unit of the first template 11 is set towards the cathode side of the bipolar plate above it, and the second gas distribution unit of the second template 12 is set towards the anode side of the bipolar plate below it. The bipolar plate assembly is set on the base plate 40, and the cover plate 30 is set on the bipolar plate assembly. The cover plate 30 is made of transparent material.

[0073] From top to bottom, the cover plate, bipolar plate assembly, and base plate are arranged in sequence to form a structure that can simulate an electrolytic cell, with the anode side of the bipolar plate facing the side where the cover plate is located.

[0074] Reference Figure 1 and Figure 3 Both the first template 11 and the second template 12 are provided with channels that are respectively connected to the water inlet, water outlet and hydrogen outlet of the bipolar plate to ensure the normal flow of water and gas in the detection system during the test.

[0075] Sealing elements 80 are respectively provided between adjacent cover plate 30 and bipolar plate 20, between bipolar plate 20 and functional template, and between bipolar plate 20 and base plate 40, forming sealed spaces between cover plate, bipolar plate, functional template and base plate to simulate electrolytic cell in assembly state.

[0076] The cover plate 30 is made of a transparent material, such as an acrylic sheet or other transparent plastic material, so that the shape and height of the jet on the anode side of the bipolar plate below can be visualized and detected through the cover plate.

[0077] In some embodiments, the bipolar plate performance testing system further includes:

[0078] The jet morphology detection unit is used to detect the jet morphology of the jet formed by the bipolar plate located below the cover plate;

[0079] The jet height detection unit is used to detect the jet height of the jet formed by the bipolar plate located below the cover plate;

[0080] The jet pressure detection unit is used to detect the impact force of the jet formed by the bipolar plate located below the second template;

[0081] The outlet airflow detection unit is used to detect the airflow parameters of the hydrogen outlets on both sides of the bipolar plate.

[0082] 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 of 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 of 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, thereby realizing the detection of the bipolar plate performance.

[0083] A jet height detection unit is installed above the transparent cover plate 30, which can detect the height of the jet through the transparent cover plate.

[0084] like Figure 7 The jet height detection unit can use 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.

[0085] 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.

[0086] Because the spacing between the jet holes in the microporous flow channel is small, it is difficult to install corresponding laser displacement sensors at the corresponding positions of all jet holes to detect the water flow in each jet hole. Therefore, in this embodiment, the positions of the laser displacement sensors in the laser displacement sensor array are designed, and corresponding detection areas are selected for detection. The positions of the laser displacement sensors in the laser displacement sensor array are arranged according to the positions of the detection holes in the detection areas. Based on the selected detection areas, the differences in jet height between different detection areas can be compared to optimize the design parameters of the microporous flow channel (such as the width / height of the main channel, primary branch channels, and short branch channels).

[0087] The jet height in each detection area is measured using a laser displacement sensor array, and the performance of the jet at different locations 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.

[0088] Reference Figure 7 The jet pressure detection unit includes a pressure-sensitive membrane 60 disposed in the airflow cavity 123, and the pressure-sensitive membrane 60 is disposed opposite to the anode side of the bipolar plate located below it.

[0089] 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.

[0090] The pressure-sensitive membrane can be made of Fuji Prescale pressure measuring film or similar products.

[0091] 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).

[0092] Reference Figure 6 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.

[0093] 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.

[0094] A structure similar to the first gas distribution unit is set on one side of the base plate 40 facing the bipolar plate located above it. At this time, simulated gas can be introduced into the cathode side of the two bipolar plates through the functional template and the first gas distribution unit of the base plate to achieve a better simulation detection effect.

[0095] like Figure 8 An airflow cavity is provided on the side of the cover plate 30 facing the bipolar plate located below it. Correspondingly, a gas channel communicating with the airflow cavity is provided on the cover plate 30. Detection gas is introduced into the airflow cavity through the gas channel to provide airflow to the anode side of the corresponding bipolar plate, thereby simulating the airflow formed by oxygen generated on the anode side, so as to simulate the influence of the anode side airflow on the jet state.

[0096] The depths of the airflow cavities on the cover plate and the functional template can be set to have certain differences. For example, the depth of the airflow cavity on 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 cavity on the functional template 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.

[0097] The cover plate 30 is provided with an inlet channel 301 that communicates with the inlet of the bipolar plate and an outlet channel 302 that communicates with the outlet of the bipolar plate. Quick connectors are provided on the inlet channel 301 and the outlet channel 302 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.

[0098] The cover plate 30 is provided with an outlet channel 303 that is connected to the hydrogen outlet of the bipolar plate. Correspondingly, the outlet channels 303 on both sides of the cover plate 30 are connected to the outlet airflow detection unit to detect the gas flow rate and pressure of the hydrogen outlets on both sides.

[0099] The outlet airflow detection unit can be, for example, a piping system connected to the outlet channel and flow sensors, pressure sensors, etc. installed on the piping system.

[0100] 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.

[0101] 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.

[0102] 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.

[0103] 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.

[0104] 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 functional template for bipolar plate performance testing, used for performance testing of the microporous flow channel network on the anode side and the gas flow network on the cathode side of a bipolar plate, characterized in that... include: A first template, wherein a first gas distribution unit is provided on one side surface of the first template; The second template has a gas chamber located in the middle of one side surface, the gas chamber being arranged along the length of the second template. A second gas distribution unit is located on the other side surface of the second template. The second template has a gas channel communicating with the gas chamber for supplying the gas required for detection into the gas chamber. The first template is stacked on the second template, and the other side surface of the first template covers the opening end of the air chamber, so that the air chamber forms a closed cavity. The first template is provided with a plurality of first connecting holes at the corresponding air chamber positions, and the second template is provided with a plurality of second connecting holes in the air chamber, so that the gas in the air chamber can flow into the first gas distribution unit and the second gas distribution unit through the first connecting holes and the second connecting holes, respectively. The first gas distribution unit and the second gas distribution unit are respectively used to distribute the inflowing gas to the surface of their respective sides.

2. The functional template for bipolar plate performance testing according to claim 1, characterized in that, The first gas distribution unit includes an airflow corridor and multiple diversion slots distributed on both sides of the airflow corridor. The airflow corridor is arranged along the length direction of the first template and is connected to the first connecting hole. The diversion slots are arranged along the width direction of the first template and are arranged at intervals along the length direction of the airflow corridor. One end of the diversion slot is connected to the airflow corridor.

3. The functional template for bipolar plate performance testing according to claim 1, characterized in that, The second gas distribution unit includes airflow chambers disposed on both sides of the gas chamber, and the second connecting holes are respectively disposed on the side walls on both sides of the gas chamber and connected to the airflow chambers.

4. The functional template for bipolar plate performance testing according to claim 1, characterized in that, Gas channels are set at both ends of the gas chamber, through which the gas required for detection is introduced into the gas chamber from both ends.

5. The functional template for bipolar plate performance testing according to claim 4, characterized in that, From both ends of the air chamber toward the center, the air chamber has a gradually decreasing cross-sectional structure.

6. The functional template for bipolar plate performance testing according to claim 4 or 5, characterized in that, From both ends of the air chamber toward the center, the diameters of the first connecting hole and the second connecting hole gradually increase.

7. The functional template for bipolar plate performance testing according to claim 1 or 4, characterized in that, Along the length of the air chamber, the first connecting hole and the second connecting hole are staggered.

8. The functional template for bipolar plate performance testing according to claim 1, characterized in that, The first template has a sealing lip on the side facing the second template that cooperates with the air chamber. The sealing lip is inserted into the air chamber and forms a sealing fit with the inner wall of the air chamber.

9. A bipolar plate performance testing system, characterized in that, Includes a base plate, a cover plate, and the functional template as described in any one of claims 1-8; The functional template is disposed between two bipolar plates and together with the two bipolar plates forms a bipolar plate assembly. The first gas distribution unit of the first template is disposed facing the cathode side of the bipolar plate above it, and the second gas distribution unit of the second template is disposed facing the anode side of the bipolar plate below it. The bipolar plate assembly is mounted on the base plate, and the cover plate is mounted on the bipolar plate assembly. The cover plate is made of a transparent material.

10. The bipolar plate performance testing system according to claim 9, characterized in that, Also includes: The jet morphology detection unit is used to detect the jet morphology of the jet formed by the bipolar plate located below the cover plate; The jet height detection unit is used to detect the jet height of the jet formed by the bipolar plate located below the cover plate; The jet pressure detection unit is used to detect the impact force of the jet formed by the bipolar plate located below the second template; The outlet airflow detection unit is used to detect the airflow parameters of the hydrogen outlets on both sides of the bipolar plate.

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