CN218824193U

CN218824193U - Gas distribution uniformity verification mechanism and verification device for bipolar plate

Info

Publication number: CN218824193U
Application number: CN202222892282.3U
Authority: CN
Inventors: 刘栋栋; 龚正伟; 陈雪松
Original assignee: Weishi Energy Technology Co Ltd
Current assignee: Weishi Energy Technology Co Ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-04-07
Anticipated expiration: 2032-10-31

Abstract

The utility model provides a mechanism and verifying attachment are verified to bipolar plate gas distribution homogeneity relates to bipolar plate technical field. The gas distribution uniformity verification mechanism of the bipolar plate comprises a cover plate, a detection assembly and a test plate; the test board is provided with a first air inlet and a plurality of flow channels communicated with the first air inlet in a fluid mode, the detection assembly is provided with probes, and the probes extend into the corresponding flow channels to detect the air flow in the flow channels; the apron lid is located the one side that the survey test panel was equipped with the runner, and is equipped with the second air inlet, and second air inlet and first air inlet fluid intercommunication are configured for and are linked together with air supply fluid. The utility model provides a gaseous distribution homogeneity accreditation mechanism of bipolar plate has solved the gaseous even technical problem of whether distribution of bipolar plate that can't the accurate definite design that exists among the prior art when in-service use.

Description

Gas distribution uniformity verification mechanism and verification device for bipolar plate

Technical Field

The utility model belongs to the technical field of bipolar plate technique and specifically relates to a mechanism and verifying attachment are verified to bipolar plate gas distribution homogeneity.

Background

The bipolar plate is one of the important components of the fuel cell, and because the bipolar plate has more and finer flow channels, the gas entering from the manifold port is difficult to uniformly enter each flow channel, so that the problem that part of the flow channels are insufficient in gas or water in the flow channels cannot be discharged is caused, and the service life of the fuel cell is shortened. The traditional solution is to adopt a simulation means to carry out uniformity simulation before producing the bipolar plate, and determine the final scheme according to the simulation result. However, the accuracy of the simulation means is difficult to control, and whether the simulation means is uniform in actual use cannot be accurately determined.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a gaseous distribution homogeneity verification mechanism of bipolar plate and verifying attachment to alleviate the gaseous even technical problem of distribution when the in-service use of the bipolar plate of the unable accurate definite design that exists among the prior art.

In order to solve the technical problem, the utility model provides a technical scheme lies in:

in a first aspect, the present invention provides a bipolar plate gas distribution uniformity verification mechanism, which comprises a cover plate, a detection assembly and a test plate;

the test plate is provided with a first air inlet and a plurality of flow channels communicated with the first air inlet in a fluid mode, the detection assembly is provided with probes, and the probes extend into the corresponding flow channels to detect the gas flow in the flow channels;

the apron lid is located survey test panel is equipped with one side of runner, and is equipped with the second air inlet, the second air inlet with first air inlet fluid intercommunication is configured to and air supply fluid intercommunication.

Furthermore, a detection hole is formed in the side wall of the flow channel or the position, corresponding to the flow channel, of the cover plate, and the probe extends into the detection hole.

Still further, the detection assembly includes a plurality of flow sensors provided with the probes.

Furthermore, the cover plate is made of transparent materials.

Further, the cover plate and the test plate are detachably connected.

Furthermore, the gas distribution uniformity verification mechanism for the bipolar plate further comprises a transmission bracket, wherein the transmission bracket is mounted on the test plate and/or the cover plate and is used for fixing the detection assembly.

Furthermore, the transmission bracket comprises a slide rail, a slide block and a clamp;

the slide rail and the test board are arranged at intervals, and two ends of the slide rail are respectively connected with the clamp in an included angle;

one end of the clamp, which is deviated from the slide rail, is arranged on the side wall of the test board;

the slider with slide rail sliding fit, and with detection component connects.

Furthermore, the test board is made of graphite plates; and/or the presence of a gas in the gas,

the test board is formed by machining, and the first air inlet is provided with a plurality of air inlets.

In a second aspect, the present invention provides a verification device comprising a gas cylinder and a bipolar plate gas distribution uniformity verification mechanism as described in any one of the above;

the gas cylinder is in fluid communication with the second gas inlet of the bipolar plate gas distribution uniformity verification mechanism for inputting gas into the second gas inlet.

Still further, the authentication device further comprises a pump body, an air tube, and a manifold coupler;

the pump body is respectively communicated with the gas cylinder and the gas pipe, and the manifold connector is respectively communicated with one end of the gas pipe, which is far away from the pump body, and the second gas inlet.

Synthesize above-mentioned technical scheme, the utility model discloses the technological effect analysis that can realize as follows:

the utility model provides a gas distribution uniformity verification mechanism of a bipolar plate, which comprises a cover plate, a detection component and a test plate; the test board is provided with a first air inlet and a plurality of flow channels communicated with the first air inlet in a fluid mode, the detection assembly is provided with probes, and the probes extend into the corresponding flow channels to detect the air flow in the flow channels; the apron lid is located the one side that the survey test panel was equipped with the runner, and is equipped with the second air inlet, and second air inlet and first air inlet fluid intercommunication are configured for and are linked together with air supply fluid. The cover plate is covered on the test plate, the gas source inputs gas into the flow channels through the first gas inlet and the second gas inlet, and if one probe is arranged, the probe performs gas flow detection on the plurality of flow channels one by one; if the number of the probes is multiple, the multiple probes simultaneously and correspondingly detect the gas flow of the multiple flow channels; the gas flow in the flow channel is detected through the detection assembly, and whether the gas in each flow channel is uniformly distributed or not is judged according to the result of the detection assembly. The gas distribution uniformity of the flow channel is verified by using a real object, so that the problem of uneven gas distribution of the flow channel of the designed bipolar plate is effectively solved. The verification mechanism has the advantages of simple structure, convenient operation and low cost; the method can verify the gas distribution performance of the same flow channel structure before the die sinking of the bipolar plate, determine the stability of the designed bipolar plate structure and reduce the risk of uneven distribution of the bipolar plate after the die sinking.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a first schematic structural diagram of a test board in a bipolar plate gas distribution uniformity verification mechanism according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a second testing board in the bipolar plate gas distribution uniformity verification mechanism according to the embodiment of the present invention;

fig. 3 is a schematic structural diagram of a third test board in the bipolar plate gas distribution uniformity verification mechanism according to the embodiment of the present invention;

fig. 4 is a schematic structural diagram of a cover plate in a bipolar plate gas distribution uniformity verification mechanism provided in an embodiment of the present invention;

fig. 5 is a first schematic structural diagram of an authentication device according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a verification apparatus according to an embodiment of the present invention.

An icon:

100-a cover plate; 110-a second air inlet; 120-detection holes; 200-a test board; 210-a first air inlet; 220-a flow channel; 300-a detection component; 310-a flow sensor; 410-a slide rail; 420-a slide block; 430-a clamp; 500-pump body; 600-trachea; 700-manifold coupler.

Detailed Description

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are usually placed when used, and are only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element indicated must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Example one

Because the bipolar plate has more and more dense runners, the gas entering from the manifold port is difficult to enter each runner uniformly, which causes the problem that part of runners are short of gas or the water in the runners cannot be discharged, and reduces the service life of the fuel cell. In the prior art, a simulation means is adopted to carry out simulation test on the gas distribution uniformity of a designed bipolar plate, and the flow field of the bipolar plate is determined according to a simulation result. However, the accuracy of the simulation means is difficult to control, and it is impossible to accurately determine whether the gas is uniformly distributed in an actual situation.

In view of this, the present invention provides a gas distribution uniformity verification mechanism for a bipolar plate, which comprises a cover plate 100, a detection assembly 300 and a test plate 200; the test board 200 is provided with a first gas inlet 210 and a plurality of flow channels 220 in fluid communication with the first gas inlet 210, and the test assembly 300 is provided with probes extending into the corresponding flow channels 220 to detect the gas flow in the flow channels 220; the cover plate 100 covers the testing board 200 at a side thereof where the flow channel 220 is disposed, and is provided with a second gas inlet 110, wherein the second gas inlet 110 is in fluid communication with the first gas inlet 210 and configured to be in fluid communication with a gas source.

The cover plate 100 is covered on the test board 200, the gas source inputs gas into the flow channels 220 through the first gas inlet 210 and the second gas inlet 110, if one probe is provided, the probe performs gas flow detection on a plurality of flow channels 220 one by one; if the number of the probes is multiple, the multiple probes simultaneously and correspondingly detect the gas flow of the multiple flow channels 220; the gas flow in the flow channels 220 is detected by the detecting assembly 300, and whether the gas in each flow channel 220 is uniformly distributed is determined according to the result of the detecting assembly 300. The gas distribution uniformity of the flow channels 220 is verified by using a real object, so that the problem of uneven gas distribution of the bipolar plate flow channels 220 is effectively solved. The verification mechanism has the advantages of simple structure, convenient operation and low cost; the gas distribution verification can be carried out on the same flow channel 220 structure before the bipolar plate is opened, the stability of the designed bipolar plate structure is determined, and the risk of uneven distribution of the bipolar plate after the bipolar plate is opened is reduced.

The shape and structure of the bipolar plate gas distribution uniformity verification mechanism is described in detail below:

in the embodiment of the present invention, in the alternative, the side wall of the flow channel 220 or the cover plate 100 is provided with a detection hole 120 corresponding to the flow channel 220, and the probe is extended into the detection hole 120.

Specifically, referring to fig. 1 to 4, the test board 200 and the cover plate 100 are both rectangular, a plurality of detection holes 120 are provided, at least one of the plurality of detection holes 120 is disposed corresponding to the flow channel 220, so that a probe can extend into the flow channel 220 through the detection hole 120; when detecting, the operator closes the detection hole 120 which is not communicated with the flow passage 220, so as to avoid air leakage. In this embodiment, the detecting hole 120 is disposed on the cover plate 100; because the cover plate 100 covers the test board 200, and the detecting holes 120 are formed in the cover plate 100, the probes can conveniently extend into the flow channels 220, and the same cover plate 100 can be applied to different test boards 200. Preferably, the operator can set the outer dimensions of the inspection hole 120 according to the dimensions of the flow channel 220. Further, the cross-section of the detecting hole 120 is circular, but other shapes, such as square, etc., should be within the scope of the embodiments of the present invention.

The cover plate 100 is provided with a detection hole 120 at a position corresponding to the flow channel 220, so that a probe can extend into the flow channel 220 through the detection hole 120.

The utility model discloses in the alternative of embodiment, a plurality of inspection holes 120 are the matrix and arrange, specifically are along the width direction and the length direction interval setting of apron 100.

Specifically, a sealing ring is arranged between the detection hole 120 and the probe, so that a gap between the detection hole 120 and the probe is prevented from causing air leakage.

The plurality of detection holes 120 are arranged at intervals along the width direction of the cover plate 100, so that the plurality of detection holes 120 can correspond to the plurality of runners 220, and further, the plurality of runners 220 can be simultaneously subjected to gas flow detection; the plurality of detection holes 120 are arranged at intervals along the length direction of the cover plate 100, so that the plurality of detection holes 120 can correspond to different positions of the same flow channel 220, the gas flow at different positions of the same flow channel 220 can be tested, and the measurement precision is improved.

In an alternative aspect of the present invention, please refer to fig. 5, the detecting assembly 300 includes a plurality of flow sensors 310, and the flow sensors 310 are provided with probes.

Specifically, the number of the flow sensors 310 is equal to the number of the flow channels 220, and the flow sensors 310 with different ranges can be matched according to actual use conditions when the sizes of the flow channels 220 are different. The flow sensors 310 may individually test the corresponding flow channels 220, or a plurality of flow sensors 310 may simultaneously test the corresponding flow channels 220, preferably, the plurality of flow sensors 310 are used for simultaneous testing, so that the testing result is more accurate.

The flow rate of the gas in the flow passage 220 is detected by the flow sensor 310.

In the alternative of the embodiment of the present invention, the cover plate 100 is made of transparent material.

Specifically, the second air inlet 110, the distribution area, and other critical external dimensions of the cover plate 100 are matched with the relevant dimensions of the test board 200. When the flow channels 220 of the test board 200 are designed differently but the first gas inlets 210 and the distribution areas are the same, the cover board 100 can be used universally, reducing the cost of the gas distribution uniformity verification mechanism of the bipolar plate.

Colored gas is input into the flow channels 220 from a gas source, the cover plate 100 is made of a transparent material, the concentration or the flow speed of the gas in each flow channel 220 can be observed through the transparent cover plate 100, and whether the gas in each flow channel 220 is uniformly distributed can be further judged.

In the alternative of the embodiment of the present invention, the cover plate 100 and the test plate 200 are detachably connected.

Specifically, in this embodiment, the bolt passes through the cover plate 100 and the test plate 200 and is screwed with the nut, so as to detachably connect the cover plate 100 and the test plate 200. Of course, other detachable connection manners, such as a connection manner in which a screw passes through the cover plate 100 and is connected with the test board 200 by a screw thread, or a connection manner in which one of the cover plate 100 and the test board 200 is provided with a buckle and the other is provided with a slot, and the buckle is clamped in the slot, should also be within the protection scope of the embodiment of the present invention. Further, a seal is provided between the cover plate 100 and the test plate 200 to prevent gas leakage.

The cover plate 100 and the test plate 200 are detachably connected to facilitate the mounting and dismounting of the cover plate 100.

The utility model discloses in the alternative, gaseous distribution homogeneity of bipolar plate verification mechanism still includes the transmission support, and the transmission support mounting is in surveying test panel 200 and/or apron 100 for fixed determine module 300.

Specifically, in the present embodiment, the transmission bracket is mounted to the cover plate 100.

The drive bracket provides support for the sensing assembly 300.

In an alternative aspect of the present invention, the transmission bracket includes a slide rail 410, a slider 420, and a clamp 430; the slide rail 410 is spaced from the test board 200, and two ends of the slide rail are respectively connected with the clamp 430 at included angles; one end of the clamp 430 facing away from the slide rail 410 is mounted on the side wall of the test board 200; the slider 420 is slidably engaged with the slide rail 410 and connected to the detecting assembly 300.

Specifically, referring to fig. 6, the clamp 430 includes two grabbing bars spaced along the width direction of the test board 200, one end of each grabbing bar is connected to the slide rail 410 and perpendicular to the slide rail 410, and the other end is connected to the sidewall of the cover plate 100; the sliding blocks 420 are provided in plurality, and the plurality of sliding blocks 420 are slidably fitted with the sliding rail 410 and are provided with the flow sensors 310. Further, one end of the flow sensor 310 is provided with a probe, and the other end is bonded to the slider 420. Of course, the flow sensor 310 is mounted on the sliding block 420 by means of a snap-fit connection, etc., and the present invention should be within the scope of the present invention.

The slider 420 is in sliding fit with the sliding rail 410 and is provided with the flow sensor 310, so that the flow sensor 310 is supported, and the position of the flow sensor 310 is adjustable to match different test boards 200.

In an alternative of the embodiment of the present invention, the test board 200 is made of a graphite plate; and/or. Test panel 200 is formed by machining.

Specifically, in the prior art, the bipolar plate is made of a carbon material, a metal material or a composite material of metal and carbon and is manufactured by using a mold; in this embodiment, the test board 200 is made of a graphite plate and is formed by machining, so that the mold opening is not required, and the cost of the verification test is reduced. When the test board 200 is processed, please refer to fig. 1, the graphite plate is processed into the shape of the designed bipolar plate, and the probe of the flow sensor 310 extends into the flow channel 220 from the detection hole 120 of the cover plate 100 to detect the gas flow of each flow channel 220; or, referring to fig. 2 and fig. 3, after the graphite plate is processed into the designed shape of the whole bipolar plate, the graphite plate is cut at the position where the flow channels 220 are provided, so as to form the test board 200, the cross section of each flow channel 220 can be observed from the cut surface, the probe of the flow sensor 310 can extend into the flow channel 220 from the detection hole 120 provided in the cover plate 100, referring to fig. 6, or extend into the flow channel 220 from the cross section of each flow channel 220, so as to detect the gas flow of each flow channel 220, and meanwhile, an operator can judge whether the gas in each flow channel 220 is uniformly distributed by the concentration and the speed of the colored gas discharged from the cross section of each flow channel 220; alternatively, referring to fig. 2 and fig. 3, a graphite plate is directly processed into a test plate 200 having a first inlet 210 and a plurality of flow channels 220, and an opening is formed at an end of the flow channel 220 away from the first inlet 210; the probe of the flow sensor 310 may extend into the flow channel 220 from the detection hole 120 of the cover plate 100, or extend into the flow channel 220 from the cross section of each flow channel 220, so as to detect the gas flow of each flow channel 220, and meanwhile, an operator may determine whether the gas in each flow channel 220 is uniformly distributed by the concentration and the speed of the colored gas discharged from the opening.

The test board 200 is made of a graphite plate, and compared with the bipolar plate in the prior art which is made of a carbon material, a metal material or a composite material of metal and carbon, the material cost is reduced; and the test board 200 is formed by machining without opening the die, thereby further reducing the cost of the verification test.

In the alternative of the embodiment of the present invention, the first air inlet 210 is provided in plurality.

Specifically, in the prior art, the bipolar plate is configured to be rectangular, and one end of the bipolar plate is provided with an oxidant inlet, a coolant inlet and a fuel outlet at intervals along the width direction, and the other end of the bipolar plate is provided with an oxidant outlet, a coolant outlet and a fuel inlet along the width direction. In order to make the test board 200 and the bipolar plate have the same shape, in this embodiment, the test board 200 is rectangular. The first gas inlet 210 is provided with a plurality of oxidant manifold ports, coolant manifold ports or fuel manifold ports, respectively, to achieve flow measurement of different gases.

Taking the first air inlet 210 as an oxidant manifold port as an example, after the oxidant enters the flow channels 220, the flow sensor 310 detects the flow rate of the gas in the flow channels 220 to determine whether the distribution of the gas entering each flow channel 220 is uniform.

Example two

The embodiment of the utility model provides a verification device, including the gaseous distribution homogeneity verification mechanism of bipolar plate mentioned in embodiment one, consequently, all beneficial effect in embodiment one have also been possessed, no longer describe here.

The utility model discloses in the alternative, verify that the device still includes the gas cylinder, the gas cylinder with bipolar plate gas distribution homogeneity verify that second air inlet 110 fluid intercommunication of mechanism for input gas in to second air inlet 110.

Specifically, in this embodiment, the gas cylinder inputs colored gas into the second gas inlet 110, so that an operator can observe the concentration and the flow rate of the gas in each flow channel 220 through the transparent cover plate 100. Of course, the colorless gas input from the gas cylinder into the second gas inlet 110 should also be within the scope of the embodiments of the present invention.

The gas cylinder is in fluid communication with the second gas inlet 110, so that colored gas can be input into the second gas inlet 110, and the concentration and the flow rate of the gas in the flow channel 220 can be conveniently observed.

In an alternative aspect of the present invention, the verification device further comprises a pump body 500, an air tube 600, and a manifold connector 700; the pump body 500 is respectively communicated with the gas cylinder and the gas pipe 600, and the manifold connector 700 is respectively communicated with one end of the gas pipe 600 away from the pump body 500 and the second gas inlet 110.

Specifically, the pump body 500 is provided as an air pump or a pressure reducing valve.

During simulation verification, the pump body 500 is opened, the colored gas enters the manifold connector 700 through the gas pipe 600, enters the test board 200, flows into the plurality of flow channels 220 through the first gas inlet 210 of the test board 200, and the gas flow of each flow channel 220 is detected through the flow sensor 310, so as to determine whether the gas in each flow channel 220 is uniformly distributed; meanwhile, whether the gas in each flow channel 220 is uniformly distributed is judged by the concentration of the color of the gas in the flow channel 220 or the gas flow speed; meanwhile, the concentration and the velocity of the gas discharged from the flow channels 220 are observed from the side of the test board 200, and whether the gas is uniformly distributed is determined.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A bipolar plate gas distribution uniformity verification mechanism, comprising: a cover plate (100), a detection assembly (300) and a test plate (200);

the test plate (200) is provided with a first air inlet (210) and a plurality of flow channels (220) which are communicated with the first air inlet (210) in a fluid mode, the detection assembly (300) is provided with probes, and the probes extend into the corresponding flow channels (220) to detect the gas flow in the flow channels (220);

the cover plate (100) covers one side of the test plate (200) where the flow channel (220) is arranged, and is provided with a second air inlet (110), and the second air inlet (110) is in fluid communication with the first air inlet (210) and is configured to be in fluid communication with an air source.

2. The gas distribution uniformity verification mechanism for a bipolar plate as claimed in claim 1, wherein a detection hole (120) is formed on the side wall of the flow channel (220) or the cover plate (100) at a position corresponding to the flow channel (220), and the probe is inserted into the detection hole (120).

3. The bipolar plate gas distribution uniformity verification mechanism of claim 1, wherein said detection assembly (300) comprises a plurality of flow sensors (310), said flow sensors (310) being provided with said probes.

4. The bipolar plate gas distribution uniformity verification mechanism of claim 1, wherein said cover plate (100) is made of a transparent material.

5. The bipolar plate gas distribution uniformity verification mechanism of claim 1, wherein said cover plate (100) and said test plate (200) are removably attached.

6. The bipolar plate gas distribution uniformity verification mechanism according to any one of claims 1-5, further comprising a driving bracket mounted to said test plate (200) and/or said cover plate (100) for fixing said detection assembly (300).

7. The bipolar plate gas distribution uniformity verification mechanism of claim 6 wherein said transmission bracket comprises a slide rail (410), a slider (420) and a clamp (430);

the slide rail (410) and the test board (200) are arranged at intervals, and two ends of the slide rail are respectively connected with the clamp (430) at included angles;

one end of the clamp (430) facing away from the sliding rail (410) is mounted on the side wall of the test board (200);

the sliding block (420) is in sliding fit with the sliding rail (410) and is connected with the detection assembly (300).

8. A bipolar plate gas distribution uniformity verification mechanism according to any of claims 1-5, wherein said test plate (200) is made of graphite plate; and/or the presence of a gas in the gas,

the test board (200) is formed by machining, and the first air inlet (210) is provided in plurality.

9. A verification device comprising a gas cylinder and a bipolar plate gas distribution uniformity verification mechanism according to any one of claims 1 to 8;

the gas cylinder is in fluid communication with a second gas inlet (110) of the bipolar plate gas distribution uniformity verification mechanism for inputting gas into the second gas inlet (110).

10. Authentication device according to claim 9, further comprising a pump body (500), an air tube (600) and a manifold coupler (700);

the pump body (500) is respectively communicated with the gas cylinder and the gas pipe (600), and the manifold connector (700) is respectively communicated with one end of the gas pipe (600) away from the pump body (500) and the second gas inlet (110).