A membrane electrode perforation defect and coating uniformity integrated detection device

Abstract

The application discloses a membrane electrode perforation defect and coating uniformity integrated detection device, which is characterized in that: a box body is internally fixed with a support plate, the top of the support plate is provided with a membrane electrode body, and the inside of the box body is provided with a detection mechanism; the detection mechanism comprises two detection assemblies, each detection assembly comprises two detection units, the two detection units are arranged on the top and the bottom of the support plate respectively, each detection unit comprises a support frame, one side of the support frame is connected with an insulating roller through a bearing, the other side of the support frame is provided with an inner support cylinder, and sliding square grooves are formed in the two sides of the support frame; two sliding square blocks are slidingly connected in the two sliding square grooves respectively; the application has the advantages that: the detection error caused by human factors can be avoided, the measurement range can show the real situation, the test cost is relatively low, the membrane electrode can be detected in a multi-position integrated mode, the defects such as pinholes and uneven coating of the membrane electrode can be avoided, and the problem of sample assembly in the battery operation test can be found out after the problem occurs.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of membrane electrode detection, and particularly relates to a membrane electrode perforation defect and coating uniformity integrated detection device. BACKGROUND

[0002] Ion exchange membrane, catalytic layer, gas diffusion layer and other components constitute the main place of electrochemical reaction component-membrane electrode, and the gas diffusion layer is widely used in fuel cells, PEM water electrolysis devices, carbon dioxide reduction, ammonia decomposition, electrochemical hydrogen pump and other electrochemical devices. Generally, the polymer film in the membrane electrode may have pinholes and local wrinkles in production, and the surface catalytic layer coating may have cracks, stripes and uneven coating problems. For the gas diffusion electrode type membrane electrode, the hot pressing assembly process may cause the carbon tube in the gas diffusion layer to pierce the film to form a pinhole and a defect.

[0003] The existing membrane electrode defect diagnosis is detected by naked eyes, and the method of placing the sample on a light-emitting plate and observing and judging the surface defect condition by naked eyes is relatively original, consumes a large amount of manpower and time cost, and has low production efficiency, and manual detection has low resolution, and is prone to missed detection, false detection and other situations;

[0004] The existing membrane electrode defect diagnosis uses a laser range finder to test, and the defect is determined by the deviation of the defect position from the nominal distance value being greater than or equal to a preset tolerance value. This method cannot exclude whether there is a wrinkle in the transportation process to cause misjudgment. If the bottom is vacuum adsorbed to ensure no wrinkles, the test speed is reduced and the time cost is increased.

[0005] When detecting a small defect, if the detection sample is an ion exchange membrane, it is a transparent sample and is not easy to observe, and a high magnification and fast and accurate detection instrument is required, which has high investment cost and long detection time. The surface of the CCM type membrane electrode is all black, and it is not easy to observe the hole. A light-emitting device needs to be placed below. If the membrane electrode is detected, the membrane electrode has been assembled with a gas diffusion layer, and the surface of the gas diffusion layer is loose and porous, and it is impossible to determine whether the defect exists.

[0006] The detection of the uniformity of the coating of the membrane electrode is mainly performed by a thickness gauge in the laboratory level, and the disadvantages are that a large amount of manpower and time cost is consumed, manual detection has low resolution, and missed detection, false detection and other situations are prone to occur. Small defects are observed by using a microscope, a scanning electron microscope and a transmission electron microscope, and the disadvantages are that only surface defects can be identified. SUMMARY

[0007] Therefore, the present application provides a membrane electrode perforation defect and coating uniformity integrated detection device to solve the problems of possible errors caused by human factors, small measurement range, high test cost, easy leakage of the gas diffusion layer by the probe and damaged sample after testing.

[0008] In order to achieve the above object, the present application provides the following technical scheme: a membrane electrode perforation defect and coating uniformity integrated detection device, comprising a box body, a support plate is fixedly arranged in the box body, a membrane electrode body is arranged on the top of the support plate, and a detection mechanism is arranged in the box body;

[0009] The detection mechanism comprises two detection assemblies, each detection assembly comprises two detection units, the two detection units are arranged on the top and the bottom of the support plate respectively, each detection unit comprises a support frame, an insulating roller is connected to one side of the support frame through a bearing, an inner support cylinder is arranged on the other side of the support frame, sliding blocks are fixedly connected to the two sides of the inner support cylinder, sliding grooves are formed in the two sides of the support frame, the sliding blocks are slidably connected in the sliding grooves, and a conductive roller is sleeved on the outer side of the inner support cylinder through a bearing. The support frames of the two detection units of one of the detection assemblies are fixedly connected with fixing rods, the fixing rods are fixedly connected with limiting blocks on one side, the limiting blocks are provided with connecting blocks on one side, the connecting blocks are provided with grooves on one side, the limiting blocks are engaged with the grooves, second electric push rods are fixedly arranged on one side of the connecting blocks, and the second electric push rods are fixedly connected with the box body.

[0010] Preferably, the fixing rods are sleeved with rubber clamping blocks, the fixing rods are in contact with the rubber clamping blocks, the rubber clamping blocks are fixedly arranged in the grooves, the fixing rods are fixedly sleeved with gears, the connecting blocks are fixedly provided with third push rods on one side, the third push rods are fixedly connected with toothed plates on the output ends, and the toothed plates are engaged with the gears.

[0011] Preferably, the support frames of the two detection units of one of the detection assemblies are fixedly connected with clamping blocks on the two sides, and the clamping blocks are provided with clamping grooves on one side.

[0012] Preferably, the support frames of the two detection units of the other detection assembly are fixedly connected with U-shaped frames on one side through bearings, the U-shaped frames are fixedly connected with two first electric push rods on one side, the first electric push rods are fixedly connected with the box body, the U-shaped frames are fixedly connected with a first motor on one side, and the first motor is fixedly connected with the support frame on the output end.

[0013] Preferably, the box is internally provided with a transmission mechanism, the transmission mechanism comprises a first lead screw and a first limiting rod, the first lead screw is connected with the two side walls of the box interior through bearings at both ends, the first limiting rod is fixedly connected with the two side walls of the box interior at both ends, a second motor is fixedly arranged on one side of the box, the output end of the second motor is fixedly connected with the first lead screw, a sliding block is threadedly sleeved on the outside of the first lead screw, the first limiting rod penetrates through the sliding block and is slidably connected with the sliding block, a branch clamping opening is formed in one side of the sliding block, a limiting branch is fixedly arranged in the box interior, the limiting branch penetrates through the branch clamping opening, two limiting assemblies are arranged on one side of the sliding block, the limiting assembly comprises a square opening, the square opening is formed in one side of the sliding block, a first side opening is formed in one side of the square opening, a fixed clamping block is arranged in the first side opening, a connecting rod is fixedly connected with one side of the fixed clamping block, a second side opening is formed in one side of the sliding block, the connecting rod penetrates through the second side opening, a spring is sleeved on the outside of the connecting rod, a square plate sliding block is fixedly sleeved on the outside of the connecting rod, the square plate sliding block slides in the second side opening, a connecting base is fixedly connected to one end of the connecting rod, a pulley is rotatably connected to the inner side of the connecting base, and the pulley is in contact with the limiting branch.

[0014] Preferably, the support plate is provided with a perforation detection mechanism at the bottom, the perforation detection mechanism comprises a connecting shell, the connecting shell is arranged on one side of the bottom of the support plate, a plurality of tuyeres are formed in one side of the connecting shell, and a fixed block is fixedly arranged at the bottom of the connecting shell.

[0015] Preferably, the box interior is provided with two support assemblies, and the support assembly comprises a sliding rail support.

[0016] Preferably, the box bottom is fixedly connected with support legs at four corners.

[0017] Preferably, the box is provided with an opening on one side.

[0018] Preferably, the box interior is fixedly provided with a current-voltage controller, the current-voltage controller is electrically connected with the conductive roller, and the box top is fixedly provided with an infrared thermal imaging and optical imaging equipment.

[0019] The embodiment of the application has the following advantages:

[0020] 1. When measuring the uniformity of the top of the membrane electrode body by rolling the conductive roller on the membrane electrode body, the sliding blocks on both sides of the inner support cylinder slide up and down in the sliding groove and detect the diffusion layer on the membrane electrode body. The bottom of the membrane electrode body is in contact with the two conductive rollers. The bottom conductive roller is moved by the transmission mechanism to detect the coating uniformity at the bottom of the membrane electrode body. This avoids detection errors caused by human factors, the measurement range can show the true situation, the testing cost is low, and the membrane electrode and diffusion layer can be detected in a multi-position integrated manner.

[0021] 2. Two conductive rollers roll on the top and bottom of the membrane electrode body, respectively. A current and voltage controller energizes the two conductive rollers, allowing them to perform micro-current detection on the membrane electrode body. The connecting shell slides at the bottom of the membrane electrode body, causing a nozzle to blow hydrogen gas onto the membrane electrode body. The hydrogen gas passes through the membrane electrode body and reacts chemically with the air on the other side under the catalytic action of the catalyst in the catalyst layer. Heat is generated on the membrane electrode body. Surface defects are quickly observed by infrared thermal imaging and optical imaging equipment. At the same time, thermal imaging can monitor the heat distribution of the membrane electrode, thereby determining the perforation location, avoiding gas diffusion layer leakage, and preventing the sample from being damaged and unusable after testing. Attached Figure Description

[0022] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0023] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 A cross-sectional view of the overall structure provided for this invention;

[0026] Figure 3 The rear-view perspective view provided for this invention;

[0027] Figure 4 A perspective view of the testing mechanism provided by the present invention;

[0028] Figure 5 A connecting shell provided by the present application;

[0029] Figure 6 A support frame provided by the present application;

[0030] Figure 7 A connecting block provided by the present application;

[0031] Figure 8 A U-shaped frame provided by the present application;

[0032] Figure 9 A slider provided by the present application;

[0033] Figure 10 A sectional view of the slider provided by the present application;

[0034] Figure 11 A connecting shell provided by the present application; Figure 6 An enlarged view of the structure of A part in the figure.

[0035] In the figure: 1, box body; 2, opening; 3, first limiting rod; 4, first lead screw; 5, first electric push rod; 6, U-shaped frame; 7, first motor; 8, support leg; 9, second motor; 10, slider; 11, support plate; 12, membrane electrode body; 13, second electric push rod; 14, slide rail support; 15, air pump; 16, connecting pipe; 17, third motor; 18, second lead screw; 19, second limiting rod; 20, connecting block; 21, support frame; 22, connecting shell; 23, tuyere; 24, fixed block; 25, insulating roller; 26, conductive roller; 27, fixed rod; 28, rubber clamping block; 29, inner support cylinder; 30, limiting block; 31, slot; 32, third push rod; 33, toothed plate; 34, gear; 35, clamping block; 36, clamping groove; 37, sliding square block; 38, sliding square groove; 39, limiting support; 40, square opening; 41, connecting rod; 42, connecting base; 43, pulley; 44, support clamping opening; 45, first side opening; 46, fixed clamping block; 47, second side opening; 48, spring; 49, square plate slider; 50, current and voltage controller; 51, infrared thermal imaging and optical imaging equipment. DETAILED DESCRIPTION

[0036] The embodiments of the present application will be described in conjunction with the preferred embodiments with specific details in order to provide a thorough understanding of the present application. Obviously, a person skilled in the art will realize the other advantages and purposes of the present application from the description of the embodiments without making any creative effort. It is apparent that the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by a person skilled in the art without making any creative effort fall within the scope of the present application.

[0037] Referring to the drawings Figures 1-11 The application provides a membrane electrode perforation defect and coating uniformity integrated detection device, which comprises a box body 1, a supporting plate 11 is fixedly arranged in the box body 1, a membrane electrode body 12 is arranged on the top of the supporting plate 11, and a detection mechanism is arranged in the box body 1.

[0038] The detection mechanism comprises two detection assemblies, each detection assembly comprises two detection units, the two detection units are arranged on the top and the bottom of the supporting plate 11 respectively, each detection unit comprises a supporting frame 21, an insulating roller 25 is connected to one side of the supporting frame 21 through a bearing, an inner supporting cylinder 29 is arranged on the other side of the supporting frame 21, sliding blocks 37 are fixedly connected to the two sides of the inner supporting cylinder 29, sliding grooves 38 are formed in the two sides of the supporting frame 21, the two sliding blocks 37 are slidably connected in the two sliding grooves 38 respectively, and a conductive roller 26 is arranged on the outer side of the inner supporting cylinder 29 through a bearing. The supporting frames 21 of the two detection units of one detection assembly are fixedly connected with fixed rods 27, the fixed rods 27 are fixedly connected with limiting blocks 30 on one side, the limiting blocks 30 are provided with connecting blocks 20 on one side, the connecting blocks 20 are provided with grooves 31 on one side, the limiting blocks 30 are buckled with the grooves 31 respectively, and the connecting blocks 20 are fixedly provided with second electric push rods 13 on one side. The second electric push rods 13 are fixedly connected with the box body 1, a current-voltage controller 50 is fixedly arranged in the box body 1, the current-voltage controller 50 is electrically connected with the conductive roller 26, and an infrared thermal imaging and optical imaging equipment 51 is fixedly arranged on the top of the box body 1.

[0039] In the embodiment, the second electric push rod 13 is started, the second electric push rod 13 is started and drives the connecting block 20 to move, the connecting block 20 drives the limiting block 30 to move, the limiting block 30 drives the fixed rod 27 to move, the fixed rod 27 drives the supporting frame 21 to move, the conductive roller 26 on one side of the supporting frame 21 is in contact with the membrane electrode body 12, the current-voltage controller 50 is powered on with the two conductive rollers 26, the two conductive rollers 26 perform micro-current detection on the membrane electrode body 12, the infrared thermal imaging and optical imaging equipment 51 is used for shooting and rapid observation of surface defects, and the thermal imaging shooting is used for monitoring the heat distribution state of the membrane electrode, so that the perforation position is determined.

[0040] Wherein, in order to realize the purpose of rotation, the device uses the following technical scheme to realize: the fixed rod 27 is externally sleeved with a rubber clamping block 28, the fixed rod 27 is in contact with the rubber clamping block 28, the rubber clamping block 28 is fixedly embedded in the inside of the slot 31, the fixed rod 27 is externally fixedly sleeved with a gear 34, one side of the connecting block 20 is fixedly provided with a third push rod 32, the output end of the third push rod 32 is fixedly connected with a toothed plate 33, the toothed plate 33 is engaged with the gear 34, the third push rod 32 at the bottom of the supporting plate 11 is started, the third push rod 32 is started and pushes the toothed plate 33 to extend, the toothed plate 33 drives the gear 34 to rotate, the gear 34 drives the fixed rod 27 to rotate, the fixed rod 27 drives the support frame 21 to rotate, the support frame 21 drives the insulating roller 25 and the conductive roller 26 to rotate, so that the insulating roller 25 is in contact with the membrane electrode body 12, at this time the clamping block 35 rotates to the other side of the fixed rod 27;

[0041] Two supporting frames 21 of two detection units of one detection assembly are fixedly connected with clamping blocks 35 on both sides, two clamping blocks 35 are provided with clamping grooves 36 on one side, a transmission mechanism is arranged in the box body 1, the transmission mechanism comprises a first screw rod 4 and a first limiting rod 3, the first screw rod 4 is connected with the two side walls in the box body 1 through bearings at both ends, the first limiting rod 3 is fixedly connected with the two side walls in the box body 1 at both ends, a second motor 9 is fixedly arranged on one side of the box body 1, the output end of the second motor 9 is fixedly connected with the first screw rod 4, a sliding block 10 is sleeved with threads outside the first screw rod 4, the first limiting rod 3 penetrates through the sliding block 10 and is slidably connected with the sliding block 10, a supporting strip clamping opening 44 is arranged on one side of the sliding block 10, a limiting supporting strip 39 is fixedly arranged in the box body 1, the limiting supporting strip 39 penetrates through the supporting strip clamping opening 44, two limiting assemblies are arranged on one side of the sliding block 10, the limiting assembly comprises a square opening 40, the square opening 40 is arranged on one side of the sliding block 10, a first side opening 45 is arranged on one side of the square opening 40, a fixed clamping block 46 is arranged in the first side opening 45, a connecting rod 41 is fixedly connected with one side of the fixed clamping block 46, a second side opening 47 is arranged on one side of the sliding block 10, the connecting rod 41 penetrates through the second side opening 47, a spring 48 is sleeved outside the connecting rod 41, a square plate sliding block 49 is fixedly sleeved outside the connecting rod 41, the square plate sliding block 49 slides in the second side opening 47, one end of the connecting rod 41 is fixedly connected with a connecting base 42, a pulley 43 is connected with the inner side of the connecting base 42 through a bearing, the pulley 43 is in contact with the limiting supporting strip 39, the second motor 9 is started, the second motor 9 is started and drives the first screw rod 4 to rotate, the first screw rod 4 rotates and drives the sliding block 10 to move, at the same time, the sliding block 10 slides on the limiting supporting strip 39, first, the clamping block 35 on the top of the supporting plate 11 enters the square opening 40, the sliding block 10 drives the clamping block 35 to move, at the same time, the pulley 43 slides on the limiting supporting strip 39, the pulley 43 moves upwards and drives the connecting base 42 and the connecting rod 41 to move, the connecting rod 41 drives the fixed clamping block 46 to move, the fixed clamping block 46 is clamped into the clamping groove 36, the sliding block 10 drives the clamping block 35 to move more stably, the clamping block 35 drives the supporting frame 21 to move, the supporting frame 21 drives the fixed rod 27 to move, the fixed rod 27 drives the limiting block 30 to move, at the same time, the fixed rod 27 slides out of the rubber clamping block 28, at the same time, the fixed rod 27 on the other side of the supporting frame 21 slides on the sliding rail support 14, the conductive roller 26 rolls on the membrane electrode assembly 12;

[0042] Wherein, in order to realize the purpose of control, the device uses the following technical scheme to realize: the support frame 21 of the two detection units of another detection assembly is connected with a U-shaped frame 6 on one side through a bearing, the U-shaped frame 6 is fixedly connected with two first electric push rods 5 on one side, the two first electric push rods 5 are fixedly connected with the box body 1, the U-shaped frame 6 is fixedly connected with a first motor 7 on one side, the output end of the first motor 7 is fixedly connected with the support frame 21, the first electric push rod 5 on one side of the support plate 11 is started, the first electric push rod 5 is started and pushes the U-shaped frame 6 to move, the conductive roller 26 at the bottom of the support frame 21 on one side of the U-shaped frame 6 is in contact with the membrane electrode body 12, and the first motor 7 on one side of the U-shaped frame 6 at the bottom of the support plate 11 is started, the first motor 7 is started and drives the support frame 21 to rotate, so that the support frame 21 drives the insulating roller 25 and the conductive roller 26 to rotate;

[0043] Wherein, in order to realize the purpose of perforation detection, the device uses the following technical scheme to realize: the bottom of the support plate 11 is provided with a perforation detection mechanism, the perforation detection mechanism comprises a connecting shell 22, the connecting shell 22 is arranged on one side of the bottom of the support plate 11, a plurality of tuyeres 23 are formed in one side of the connecting shell 22, a fixed block 24 is fixedly arranged at the bottom of the connecting shell 22, a second screw rod 18 and a second limiting rod 19 are arranged in the box body 1, the two ends of the second screw rod 18 are connected with the two side walls of the box body 1 through bearings, the two ends of the second limiting rod 19 are fixedly connected with the two side walls of the box body 1, the second screw rod 18 penetrates through the fixed block 24 and is connected with the fixed block 24 through threads, the second limiting rod 19 penetrates through the fixed block 24 and is connected with the fixed block 24 through sliding, a third motor 17 is fixedly arranged on one side of the box body 1, the output end of the third motor 17 is fixedly connected with the second screw rod 18, a connecting pipe 16 is fixedly connected with one side of the connecting shell 22, one end of the connecting pipe 16 is fixedly connected with a gas pump 15, and the gas pump 15 is fixedly arranged at the bottom of the box body 1; the third motor 17 is started, the third motor 17 is started and drives the second screw rod 18 to rotate, the second screw rod 18 drives the fixed block 24 to move, the fixed block 24 drives the connecting shell 22 to move, the gas pump 15 is started and hydrogen is input into the connecting shell 22 through the connecting pipe 16, the connecting shell 22 slides at the bottom of the membrane electrode body 12, the tuyere 23 blows hydrogen to the membrane electrode body 12, the hydrogen passes through the membrane electrode body 12 and reacts with air on the other side of the membrane electrode body 12 under the catalytic action of the catalyst in the catalytic layer;

[0044] Wherein, in order to realize the purpose of support limiting, the device uses the following technical scheme to realize: the box body 1 is internally provided with two support assemblies, the support assembly comprises a sliding rail support 14, the fixed rod 27 penetrates through the sliding rail support 14 and is connected with the sliding rail support 14 through sliding, and the sliding rail support 14 has the function of supporting and limiting the fixed rod 27.

[0045] In order to realize the support purpose, the device adopts the following technical scheme: the box 1 bottom four corners are fixedly connected with support legs 8, the box 1 one side is provided with an opening 2, and the support leg 8 has the support box 1 function.

[0046] The use process of the application is as follows: when the application is used, the membrane electrode body 12 is placed on the support plate 11, so that the top and bottom of the membrane electrode body 12 are exposed to the air;

[0047] When the coating uniformity detection is performed, the first electric push rod 5 on one side of the support plate 11 is started, the first electric push rod 5 is started and pushes the U-shaped frame 6 to move, the conductive roller 26 at the bottom of the support frame 21 on one side of the U-shaped frame 6 is in contact with the membrane electrode body 12, and the first motor 7 on one side of the U-shaped frame 6 at the bottom of the support plate 11 is started, the first motor 7 is started and drives the support frame 21 to rotate, the support frame 21 drives the insulating roller 25 and the conductive roller 26 to rotate, the insulating roller 25 at the bottom of the support plate 11 is in contact with the bottom of the membrane electrode body 12, and the second electric push rod 13 is started, the second electric push rod 13 is started and pushes the connecting block 20 to move, the connecting block 20 drives the limiting block 30 to move, the limiting block 30 drives the fixed rod 27 to move, the fixed rod 27 drives the support frame 21 to move, the conductive roller 26 on one side of the support frame 21 is in contact with the membrane electrode body 12, the third push rod 32 at the bottom of the support plate 11 is started, the third push rod 32 is started and pushes the toothed plate 33 to extend out, the toothed plate 33 drives the gear 34 to rotate, the gear 34 drives the fixed rod 27 to rotate, the fixed rod 27 drives the support frame 21 to rotate, the support frame 21 drives the insulating roller 25 and the conductive roller 26 to rotate, so that the insulating roller 25 is in contact with the membrane electrode body 12, the clamping block 35 is rotated to the other side of the fixed rod 27, the top of the membrane electrode body 12 is in contact with the two conductive rollers 26, the bottom of the membrane electrode body 12 is in contact with the two insulating rollers 25, the second motor 9 is started, the second motor 9 is started and drives the first screw rod 4 to rotate, the first screw rod 4 rotates and drives the sliding block 10 to move, the sliding block 10 slides on the limiting branch 39 at the same time, first, the clamping block 35 at the top of the support plate 11 enters the square opening 40, the sliding block 10 pushes the clamping block 35 to move, the pulley 43 slides on the limiting branch 39 at the same time, the pulley 43 moves upwards and drives the connecting base 42 and the connecting rod 41 to move, the connecting rod 41 pushes the fixed clamping block 46 to move, the fixed clamping block 46 is clamped into the clamping groove 36, the sliding block 10 drives the clamping block 35 to move more stably, the clamping block 35 drives the support frame 21 to move, the support frame 21 drives the fixed rod 27 to move, the fixed rod 27 drives the limiting block 30 to move, the fixed rod 27 slides out of the rubber clamping block 28 at the same time, the fixed rod 27 on the other side of the support frame 21 slides on the sliding rail support 14 at the same time, the conductive roller 26 rolls on the membrane electrode body 12, when the uniformity of the top of the membrane electrode body 12 is measured, the sliding blocks 37 on both sides of the inner support cylinder 29 slide up and down in the sliding square groove 38 and detect the diffusion layer on the membrane electrode body 12, the current voltage controller 50 is used for electrifying the conductive roller 26 and applying voltage to the diffusion layer on the surface of the membrane electrode body 12, the distance between the conductive roller 26 and the other conductive roller 26 on the membrane electrode body 12 is adjusted, the current value of the voltage passing through the diffusion layer interval is monitored, the current value is converted into the micro-porous layer load on the diffusion layer according to the current standard curve of the diffusion layer, whether the micro-porous layer on the gas diffusion substrate layer is evenly coated is obtained, and the bottom of the membrane electrode body 12 is detected by the same method,By controlling the membrane electrode body 12 top with two insulating roller 25 contact, membrane electrode body 12 bottom with two conductive roller 26 contact, through the transmission mechanism control bottom conductive roller 26 move to carry out the coating uniformity of membrane electrode body 12 bottom detection;

[0048] When the perforation defect detection, by starting the first motor 7, make the first motor 7 drive support frame 21 rotation, make membrane electrode body 12 top and bottom with insulating roller 25 contact, at this time start the first electric push rod 5, make the first electric push rod 5 drive U type frame 6 move, make U type frame 6 drive two insulating roller 25 move out of membrane electrode body 12 surface, at the same time start the third push rod 32, make the third push rod 32 push gear plate 33 move, gear plate 33 drive gear 34 rotation, make gear 34 drive fixed rod 27 and support frame 21 rotation, make membrane electrode body 12 top and bottom with conductive roller 26 contact, through the starting of the second motor 9 drive first screw rod 4 rotation, make the first screw rod 4 drive sliding block 10 move, make sliding block 10 slide on the limiting branch 39, two clamping block 35 enter the square hole 40, sliding block 10 push clamping block 35 move, at the same time pulley 43 slide on the limiting branch 39, make pulley 43 move and drive connecting base 42 and connecting rod 41 move, make connecting rod 41 push fixed clamping block 46 move, make fixed clamping block 46 clamp into the clamping groove 36, make sliding block 10 drive clamping block 35 move more stable, clamping block 35 drive support frame 21 move, support frame 21 drive fixed rod 27 move, at the same time fixed rod 27 from the rubber clamping block 28 slide out, at the same time support frame 21 other side of the fixed rod 27 slide on the slide rail support 14, make two conductive roller 26 respectively on the membrane electrode body 12 top and bottom roll, through the current voltage controller 50 and two conductive roller 26 power supply, make two conductive roller 26 to membrane electrode body 12 micro current detection, in the rolling process, if the membrane electrode body 12 exist defect, will cause two conductive roller 26 between power supply, make two conductive roller 26 short circuit, cause current fluctuation value is larger, two conductive roller 26 back, at this time start the third motor 17, the third motor 17 start and drive the second screw rod 18 rotation, make the second screw rod 18 drive fixed block 24 move, fixed block 24 drive connecting shell 22 move, at the same time air pump 15 start and hydrogen through the connecting pipe 16 input into the connecting shell 22, make connecting shell 22 slide on the membrane electrode body 12 bottom, make air nozzle 23 blow hydrogen to membrane electrode body 12, hydrogen through membrane electrode body 12 and with membrane electrode body 12 other side of the air in the catalyst of the catalyst chemical reaction under the catalytic effect of membrane electrode body 12, membrane electrode body 12 produce heat, through infrared thermal imaging and optical imaging equipment 51 shoot fast observation surface defect, at the same time thermal imaging can monitor the heat distribution of membrane electrode body, so as to determine the perforation position.

[0049] The above merely describes preferred embodiments of the present application, and any modification or equivalent substitution of the technical solutions described above can be made by those skilled in the art to modify the present application or modify it into equivalent technical solutions. Therefore, any simple modification or equivalent substitution made according to the technical solutions of the present application is within the scope of protection claimed by the present application.

Claims

1. A membrane electrode perforation defect and coating uniformity integrated detection device, comprising a box body (1), characterized in that: The box (1) is internally provided with a support plate (11), the top of the support plate (11) is provided with a membrane electrode body (12), and the box (1) is internally provided with a detection mechanism; The detection mechanism comprises two detection assemblies, each detection assembly comprises two detection units, the two detection units are arranged on the top and the bottom of the support plate (11), each detection unit comprises a support frame (21), one side of the support frame (21) is connected with an insulating roller (25) through a bearing, the other side of the support frame (21) is provided with an inner support cylinder (29), the inner support cylinder (29) is fixedly connected with sliding blocks (37) on both sides, sliding grooves (38) are formed in the two sides of the support frame (21), the two sliding blocks (37) are slidably connected in the two sliding grooves (38) respectively, the inner support cylinder (29) is sleeved with a conductive roller (26) on the outside through a bearing, the support frames (21) of the two detection units of one detection assembly are fixedly connected with fixed rods (27) on both sides, the fixed rods (27) are fixedly connected with limiting blocks (30) on one side, the limiting blocks (30) are provided with connecting blocks (20) on one side, the connecting blocks (20) are provided with grooves (31) on one side, the limiting blocks (30) are buckled with the grooves (31) respectively, the connecting blocks (20) are fixedly provided with second electric push rods (13) on one side, the second electric push rods (13) are fixedly connected with the box (1), the membrane electrode body (12) is in contact with the two conductive rollers (26) on the top, and the membrane electrode body (12) is in contact with the two insulating rollers (25) on the bottom; The support frames (21) of the two detection units of the other detection assembly are connected with U-shaped frames (6) on one side through bearings, the U-shaped frames (6) are fixedly connected with two first electric push rods (5) on one side, the first electric push rods (5) are fixedly connected with the box (1), the U-shaped frames (6) are fixedly connected with first motors (7) on one side, and the output ends of the first motors (7) are fixedly connected with the support frames (21); The box (1) is internally provided with a current-voltage controller (50), the current-voltage controller (50) is electrically connected with the conductive roller (26), and the top of the box (1) is fixedly provided with an infrared thermal imaging and optical imaging device (51). Conductive roller (26) rolls on membrane electrode body (12), when measuring the uniformity of the top of membrane electrode body (12), the sliding block (37) on both sides of the inner support cylinder (29) slides up and down in the sliding groove (38) and detects the diffusion layer on the membrane electrode body (12), the conductive roller (26) is powered through the current voltage controller (50) and the voltage is applied to the diffusion layer on the surface of the membrane electrode body (12), the distance between the two conductive rollers (26) on the membrane electrode body (12) is adjusted, the current value of the voltage passing through the diffusion layer interval is monitored, the current value is converted to the microporous layer load on the diffusion layer according to the current standard curve of the diffusion layer, and the conclusion whether the microporous layer on the gas diffusion substrate layer is evenly coated is obtained.

2. The membrane electrode perforation defect and coating uniformity integrated detection device according to claim 1, characterized in that: The fixed rod (27) is externally sleeved with a rubber clamping block (28), the fixed rod (27) is in contact with the rubber clamping block (28), the rubber clamping block (28) is fixedly embedded in the slot (31), the fixed rod (27) is externally fixedly sleeved with a gear (34), one side of the connecting block (20) is fixedly provided with a third push rod (32), the output end of the third push rod (32) is fixedly connected with a toothed plate (33), and the toothed plate (33) is engaged with the gear (34).

3. The apparatus according to claim 1, wherein the apparatus is characterized by: The supporting frame (21) of the two detection units of one of the detection assemblies is fixedly connected with clamping blocks (35) on both sides, and clamping grooves (36) are formed in one side of the two clamping blocks (35).

4. The MEA perforation defect and coating uniformity integrated detection device according to claim 1, characterized in that: The box (1) is internally provided with a transmission mechanism, the transmission mechanism comprises a first lead screw (4) and a first limiting rod (3), both ends of the first lead screw (4) are connected with the two side walls in the box (1) through bearings, both ends of the first limiting rod (3) are fixedly connected with the two side walls in the box (1), one side of the box (1) is fixedly provided with a second motor (9), the output end of the second motor (9) is fixedly connected with the first lead screw (4), the first lead screw (4) is externally provided with a sliding block (10) through threads, the first limiting rod (3) penetrates through the sliding block (10) and is slidably connected with the sliding block (10), one side of the sliding block (10) is provided with a branch clamping opening (44), the box (1) is internally fixedly provided with a limiting branch (39), the limiting branch (39) penetrates through the branch clamping opening (44), one side of the sliding block (10) is provided with two limiting assemblies, the limiting assembly comprises a square opening (40), the square opening (40) is formed on one side of the sliding block (10), one side of the square opening (40) is provided with a first side opening (45), the first side opening (45) is internally provided with a fixed clamping block (46), one side of the fixed clamping block (46) is fixedly connected with a connecting rod (41), one side of the sliding block (10) is provided with a second side opening (47), the connecting rod (41) penetrates through the second side opening (47), the connecting rod (41) is externally provided with a spring (48), the connecting rod (41) is externally fixedly provided with a square plate sliding block (49), the square plate sliding block (49) slides in the second side opening (47), one end of the connecting rod (41) is fixedly connected with a connecting base (42), the inner side of the connecting base (42) is rotatably connected with a pulley (43), the pulley (43) is in contact with the limiting branch (39).

5. The apparatus according to claim 1, wherein the apparatus is characterized by: The supporting plate (11) is provided with a perforation detection mechanism at the bottom, the perforation detection mechanism comprises a connecting shell (22), the connecting shell (22) is arranged on one side of the bottom of the supporting plate (11), a plurality of tuyeres (23) are formed on one side of the connecting shell (22), the connecting shell (22) is fixedly provided with a fixed block (24) at the bottom, the box (1) is internally provided with a second lead screw (18) and a second limiting rod (19), both ends of the second lead screw (18) are connected with the two side walls of the box (1) through bearings, both ends of the second limiting rod (19) are fixedly connected with the two side walls of the box (1), the second lead screw (18) penetrates through the fixed block (24) and is connected with the fixed block (24) through threads, the second limiting rod (19) penetrates through the fixed block (24) and is slidably connected with the fixed block (24), one side of the box (1) is fixedly provided with a third motor (17), the output end of the third motor (17) is fixedly connected with the second lead screw (18), one side of the connecting shell (22) is fixedly connected with a connecting pipe (16), one end of the connecting pipe (16) is fixedly connected with an air pump (15), the air pump (15) is fixedly arranged at the bottom of the box (1).

6. The membrane electrode perforation defect and coating uniformity integrated detection device according to claim 1, characterized in that: The box (1) is internally provided with two support assemblies, the support assembly comprises a sliding rail support (14), and the fixed rod (27) penetrates through the sliding rail support (14) and is in sliding connection with the sliding rail support (14).

7. The apparatus according to claim 1, wherein the apparatus is characterized by: The box (1) is internally provided with two support assemblies, the support assembly comprises a sliding rail support (14), and the fixed rod (27) penetrates through the sliding rail support (14) and is in sliding connection with the sliding rail support (14).

8. The membrane electrode perforation defect and coating uniformity integrated detection device according to claim 1, characterized in that: The box (1) is internally provided with two support assemblies, the support assembly comprises a sliding rail support (14), and the fixed rod (27) penetrates through the sliding rail support (14) and is in sliding connection with the sliding rail support (14).

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