Membrane electrode multi-position integrated detection device and method

Abstract

This invention relates to the field of membrane electrode detection technology, specifically to a multi-position integrated detection device and method for membrane electrodes. The detection device includes a chassis, a support plate, and two mounting strips. The support plate is mounted on the chassis and supports the membrane electrode. Two first guide rails are provided on the chassis, and the two ends of the mounting strips are slidably engaged with the two first guide rails. Each mounting strip integrates an air-blowing assembly for jetting airflow, and a retractable first electrode block mounted on the mounting strip for contacting the membrane electrode to achieve conductive communication. In operation, the two air-blowing assemblies slide from the center of the chassis to both sides along with the corresponding mounting strips, and use jetting airflow to flatten and spread the membrane electrode placed on the support plate. This invention achieves the functions of airflow flattening and conductive contact detection of the membrane electrode, solving the technical problems of wrinkles and uneven placement of existing membrane electrodes during detection, which affect the accuracy of the detection.

Description

Technical Field

[0001] This invention relates to the field of membrane electrode detection technology, specifically to a multi-position integrated membrane electrode detection device and method. Background Technology

[0002] As a core component of fuel cells, the membrane electrode assembly (MEA) directly determines the performance and lifespan of the fuel cell due to the uniformity of its surface coating and the presence of perforation defects. Therefore, professional testing must be carried out after production. Traditional testing methods relying on manual visual inspection and single-point sampling are not only inefficient and prone to subjective human error, but also difficult to achieve comprehensive integrated testing. As a result, the industry is gradually introducing dedicated integrated testing equipment to replace manual testing.

[0003] To address this, Chinese Patent CN116124784B discloses an integrated detection device for membrane electrode perforation defects and coating uniformity. This device uses conductive rollers rolling on the membrane electrode body. When measuring the uniformity of the top of the membrane electrode body, sliding blocks on both sides of the inner support cylinder slide up and down within sliding grooves to detect the diffusion layer on the membrane electrode body. The bottom of the membrane electrode body contacts two conductive rollers, and a transmission mechanism controls the movement of the bottom conductive rollers to detect the coating uniformity at the bottom of the membrane electrode body. This avoids detection errors caused by human factors, provides a realistic measurement range, has low testing costs, and allows for multi-position integrated detection of the membrane electrode and diffusion layer.

[0004] However, the detection device still has obvious shortcomings in actual use. The device adopts the detection method of conductive roller rolling contact. The rigid roller directly crushes the soft membrane electrode, which cannot be pre-stretched. Uneven force on the membrane electrode can easily cause squeezing wrinkles and edge warping. Poor deformation will seriously interfere with the conductivity detection data, and the detection accuracy is difficult to guarantee. Summary of the Invention

[0005] To address the aforementioned issues, a multi-position integrated detection device and method for membrane electrodes is provided. By using a chassis, support plate, and two mounting strips, the technical problems of existing membrane electrodes being prone to wrinkling and uneven placement during the detection process, thus affecting the accuracy of the detection, are solved.

[0006] To address the problems of existing technologies, this invention provides a multi-position integrated detection device for membrane electrodes, comprising a chassis, a support plate, and two mounting strips; the support plate is mounted on the chassis and serves to support the membrane electrodes; the chassis is provided with two first guide rails, and the two ends of the mounting strips are respectively slidably engaged with the two first guide rails; the mounting strips are integrated with air blowing components for jetting airflow, and a first electrode block that is retractably mounted on the mounting strips for contacting the membrane electrodes to achieve conductive communication; in the working state, the two air blowing components slide from the middle position of the chassis to both sides along with the corresponding mounting strips, and flatten the membrane electrodes placed on the support plate by jetting airflow.

[0007] Preferably, the support plate is provided with at least two second electrode blocks; when the membrane electrode is laid flat on the support plate and simultaneously in contact with each of the second electrode blocks, the uniformity of the membrane electrode coating is detected by means of the second electrode blocks.

[0008] Preferably, the support plate is configured as an arc-shaped structure, and the first guide rail is also an arc-shaped structure; the arc axis of the first guide rail is coaxial with the arc axis of the support plate.

[0009] Preferably, the second electrode block is provided with a moving contact; the support plate is provided with a receiving groove for accommodating the second electrode block, and a stationary contact for abutting the moving contact to supply power is provided in the receiving groove; the second electrode block is provided with an elastic element, and the two ends of the elastic element are respectively connected to the bottom wall of the second electrode block and the receiving groove.

[0010] Preferably, the air blowing assembly includes a first nozzle and a second nozzle; both the first nozzle and the second nozzle are elongated narrow slit nozzles; the air jet direction of the first nozzle is arranged in the vertical direction, and the air jet direction of the second nozzle is inclined relative to the vertical direction, and the included angle between the two is an acute angle.

[0011] Preferably, a mounting base is fixedly provided on the chassis; a connecting rod is rotatably provided on the mounting base, and the connecting rod is connected to the mounting base through a torsion spring; a pressure block for pressing the film electrode is provided at the end of the connecting rod away from the mounting base, and under the elastic force of the torsion spring, the pressure block always tends to press against the support plate.

[0012] Preferably, the mounting strip is provided with a photoelectric sensor; the support plate is provided with a photosensitive receiver for sensing and cooperating with the photoelectric sensor, and the number of the photosensitive receivers is not less than two, and they are arranged one-to-one with the second electrode block.

[0013] Preferably, a second guide rail is provided on the chassis, and the support plate is slidably engaged with the second guide rail; an extension plate connected to the support plate is slidably mounted on the second guide rail, and an elongated notch is provided on the extension plate, at which an airflow sensor is disposed; a first rotary actuator is mounted on the second guide rail, and the first rotary actuator is used to drive the support plate and the extension plate to move back and forth along the second guide rail; when performing perforation detection on the membrane electrode, the airflow intensity is sensed by the airflow sensor at the elongated notch to determine whether the membrane electrode has a perforation defect.

[0014] Preferably, a support is fixed on the chassis, and a support rod is hinged to the support; a vacuum suction cup for adsorbing and fixing the membrane electrode is fitted at the end of the support rod away from the support; a second rotary driver and a linear driver are integrated inside the support, the second rotary driver is used to drive the support rod to swing, and the linear driver is used to drive the support rod to translate.

[0015] A multi-position integrated detection method for membrane electrodes includes the following steps: S1. Placement of materials: Place the membrane electrode to be tested on the support plate of the chassis to complete the support placement of the membrane electrode; S2. Alignment and Sliding: Allow the two mounting strips to slide along the two first guide rails on the chassis, controlling the two mounting strips to move from the middle position of the chassis to both sides; S3, Airflow flattening: The air blowing component, which moves synchronously with the mounting strip, sprays airflow to purge and flatten the membrane electrode on the support plate. S4. Conductivity Detection: Control the extension and retraction of the first electrode block on the mounting strip so that the first electrode block contacts the flattened membrane electrode surface and achieves conductive connection, thus completing the energization detection of the membrane electrode.

[0016] The advantages of this invention compared to the prior art are: 1. This invention achieves airflow flattening and conductive contact detection of membrane electrodes through a chassis, support plate, and two mounting strips. It simplifies equipment structure, flattens the membrane electrodes, ensures stable conductive detection, and integrates the detection process, solving the technical problems of wrinkles and uneven placement of existing membrane electrodes during detection, which affect detection accuracy. This device integrates the air-blowing flattening structure and the conductive detection structure onto the mounting strips, resulting in a simple and compact overall structure. Flattening of the membrane electrodes and conductive detection can be completed with a simple sliding motion. The workflow is seamless, and the integrated design reduces equipment space requirements. Furthermore, the flattened membrane electrodes ensure more stable contact with the first electrode block, effectively improving the stability of the detection.

[0017] 2. This invention achieves the functions of conducting conductivity continuity detection and coating uniformity detection on the bottom surface of the membrane electrode through the second electrode block. It achieves the effect of completing multiple tests in one unit, with multiple detection points, a comprehensive detection range, and reliable test results, solving the technical problem of how to perform double-sided testing of the membrane electrode in a single clamping. When testing the bottom surface of the membrane electrode, the energizing circuit in the first electrode block is disconnected, and then the energizing circuits of the two second electrode blocks at corresponding positions are connected to perform energizing detection. By using multiple second electrode blocks, different positions of the membrane electrode can be tested, thereby determining the uniformity of the membrane electrode coating.

[0018] 3. This invention enables the curved support and flattening of soft and flat membrane electrodes. Compared with a straight structure, the soft membrane electrode is more firmly attached, less prone to warping, has uniform surface tension, and more stable sliding detection. It solves the technical problems of poor air blowing flattening effect and unstable electrode contact when placing soft membrane electrodes on a traditional flat support plate, where the edges of the membrane electrode are prone to warping, natural wrinkles, and large bonding gaps. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of a multi-position integrated membrane electrode detection device according to the present invention.

[0020] Figure 2 This is a three-dimensional schematic diagram of the support plate, extension plate, and mounting strip of a multi-position integrated membrane electrode detection device according to the present invention.

[0021] Figure 3 This is the invention Figure 2 A magnified view of a portion of point A in the middle.

[0022] Figure 4 This is a three-dimensional schematic diagram of the mounting strip of a multi-position integrated membrane electrode detection device of the present invention when the first electrode block extends.

[0023] Figure 5 This is a three-dimensional schematic diagram of the mounting strip of a multi-position integrated membrane electrode detection device of the present invention after the first electrode block has shrunk.

[0024] Figure 6 This is the invention Figure 5 A magnified view of a portion of point B in the middle.

[0025] Figure 7 This is a three-dimensional exploded view of the support plate and the second electrode block of a multi-position integrated membrane electrode detection device according to the present invention.

[0026] Figure 8 This is the invention Figure 7 A magnified view of a portion of point C.

[0027] Figure 9This is a three-dimensional schematic diagram of the second electrode block of a multi-position integrated membrane electrode detection device according to the present invention.

[0028] Figure 10 This is a three-dimensional schematic diagram of the support plate and extension plate of the multi-position integrated membrane electrode detection device of the present invention during the movement process.

[0029] The following are labeled in the diagram: 1. Chassis; 11. Support plate; 111. Second electrode block; 1111. Moving contact; 1112. Elastic element; 112. Receiving groove; 1121. Stationary contact; 113. Photosensitive receiver; 12. First guide rail; 13. Support; 131. Support rod; 132. Vacuum suction cup; 2. Mounting strip; 21. Air blowing assembly; 211. First air nozzle; 212. Second air nozzle; 22. First electrode block; 23. Photoelectric sensor; 3. Mounting base; 31. Connecting rod; 311. Pressure block; 4. Second guide rail; 41. Extension plate; 411. Long strip notch; 5. Membrane electrode. Detailed Implementation

[0030] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0031] Reference Figures 1 to 4 A multi-position integrated detection device for membrane electrodes includes a housing 1, a support plate 11, and two mounting strips 2. The support plate 11 is mounted on the housing 1 and is used to support the membrane electrode 5. The housing 1 is provided with two first guide rails 12, and the two ends of the mounting strips 2 are respectively slidably engaged with the two first guide rails 12. The mounting strips 2 are integrated with air blowing components 21 for jetting airflow, and a first electrode block 22 that is retractably mounted on the mounting strips 2 for contacting the membrane electrode 5 to achieve conductive communication. In the working state, the two air blowing components 21 slide from the middle position of the housing 1 to both sides along with the corresponding mounting strips 2, and blow the membrane electrode 5 placed on the support plate 11 flat and spread it out by jetting airflow.

[0032] This invention achieves the functions of airflow flattening and conductive contact detection of the membrane electrode 5 through a chassis 1, a support plate 11, and two mounting strips 2. It simplifies the equipment structure, flattens the membrane electrode 5, ensures stable conductive detection, and completes the detection operation in one integrated manner. It solves the technical problems of existing membrane electrodes 5 easily wrinkling and uneven placement during the detection process, which affects the accuracy of the detection. In use, the operator places the membrane electrode 5 to be tested on the surface of the support plate 11 on the chassis 1, where the support plate 11 supports the membrane electrode 5. The two first guide rails 12 on the chassis 1 provide sliding limits for the two mounting strips 2. During operation, the two mounting strips 2 slide along the first guide rail 12 from the middle of the housing 1 to both sides. As the mounting strips 2 slide, they simultaneously move the integrated air-blowing assembly 21. The air-blowing assembly 21 continuously sprays air during this movement, flattening the membrane electrode 5 placed on the support plate 11 and preventing wrinkles. After the membrane electrode 5 is flattened, the first electrode block 22 mounted on the mounting strip 2 can extend and retract, allowing it to contact the membrane electrode 5 and establish electrical conductivity, thus completing the detection of the membrane electrode 5. This device integrates the air-blowing flattening structure and the conductivity detection structure onto the mounting strip 2, resulting in a simple and compact overall structure. The flattening and conductivity detection of the membrane electrode 5 can be completed with a simple sliding motion. The workflow is seamless, and the integrated design reduces the space occupied by the equipment. Furthermore, the flattened membrane electrode 5 ensures more stable contact with the first electrode block 22, effectively improving the stability of the detection.

[0033] Reference Figure 2 and Figure 7 The support plate 11 is provided with at least two second electrode blocks 111; when the membrane electrode 5 is laid flat on the support plate 11 and simultaneously in contact with each of the second electrode blocks 111, the uniformity of the coating of the membrane electrode 5 is detected by means of the second electrode blocks 111.

[0034] This invention achieves the functions of conducting conductivity and coating uniformity detection on the bottom surface of the membrane electrode 5 through the second electrode block 111. It achieves the effect of completing multiple tests in one unit, with multiple detection points, comprehensive detection range, and reliable detection results, solving the technical problem of how to perform double-sided detection of the membrane electrode 5 in a single clamping. There are six second electrode blocks 111 arranged in two groups, with multiple second electrode blocks 111 in the same group equidistantly distributed on the support plate 11. In the working state, two mounting strips 2 slide along the first guide rail 12 from the middle of the housing 1 to both sides. During the sliding process, the mounting strips 2 drive the air blowing assembly 21 to move synchronously. The air blowing assembly 21 continuously sprays airflow to flatten and spread the membrane electrode 5 on the support plate 11, ensuring that the membrane electrode 5 is flat and adheres to the surface of the support plate 11, and that the membrane electrode 5 is simultaneously in contact with multiple second electrode blocks 111 on the support plate 11. When detecting the front diffusion layer of the membrane electrode 5, the first electrode block 22 is extended so that it abuts against the membrane electrode 5, and the electrical conduction is detected through the first electrode blocks 22 on the two mounting strips 2. When inspecting the bottom surface of the membrane electrode 5, the power circuit within the first electrode block 22 is disconnected, and then the power circuits of the two second electrode blocks 111 at corresponding positions are connected to perform power-on detection. By using multiple second electrode blocks 111, different positions of the membrane electrode 5 can be inspected to determine the uniformity of the coating on the membrane electrode 5.

[0035] Reference Figure 1 , Figure 2 and Figure 7 The support plate 11 is configured as an arc-shaped structure, and the first guide rail 12 is also an arc-shaped structure; the arc axis of the first guide rail 12 is coaxial with the arc axis of the support plate 11.

[0036] This invention enables the curved support and flattening of the soft and flat membrane electrode 5. Compared with a straight structure, the soft membrane electrode 5 is more firmly attached, less prone to warping, has uniform surface tension, and more stable sliding detection. It solves the technical problems of the membrane electrode 5 being prone to warping, natural wrinkling, and large bonding gaps when the soft membrane electrode 5 is placed on the traditional straight support plate 11, resulting in poor air blowing flattening effect and unstable electrode contact. In use, the soft and flat membrane electrode 5 is placed on the arc-shaped support plate 11 on the chassis 1. The arc-shaped plate naturally tightens and stretches the soft membrane electrode 5, preventing it from being loosely stacked. The first guide rail 12 on the chassis 1, which also has an arc-shaped structure, is coaxial with the arc axis of the support plate 11. The two mounting strips 2 slide from the middle of the chassis 1 to both sides along the arc-shaped first guide rail 12. The movement trajectory of the arc-shaped guide rail conforms to the curved surface of the arc-shaped support plate 11. During the sliding process, the mounting strips 2 drive the air blowing component 21 to move synchronously. The evenly sprayed airflow flattens and flattens the taut membrane electrode 5. The first electrode block 22, which is retractable and mounted on the mounting strip 2, can smoothly fit the soft membrane electrode 5 along the arc-shaped surface and achieve conductive connection. Compared with the straight structure, the arc-shaped support method can use the surface tension to constrain the soft membrane electrode 5, effectively suppressing the warping and wrinkling of the membrane electrode 5. Combined with the coaxial arc-shaped guide rail, it ensures no deviation during the sliding process, further improving the flattening quality and detection stability.

[0037] Reference Figures 7 to 9 The second electrode block 111 is provided with a moving contact 1111; the support plate 11 is provided with a receiving groove 112 for accommodating the second electrode block 111, and a stationary contact 1121 for abutting against the moving contact 1111 to supply power is provided in the receiving groove 112; the second electrode block 111 is provided with an elastic element 1112, and the two ends of the elastic element 1112 are respectively connected to the bottom wall of the second electrode block 111 and the receiving groove 112.

[0038] This invention realizes the function of detecting the energization of the membrane electrode 5 by triggering the on / off switching of the second electrode block 111 by pressing down the first electrode block 22 and switching the detection circuit in a time-division manner. In the initial state, the second electrode block 111 is in a lifted state under the elastic force of the elastic member 1112, and at this time, the upper surface of the second electrode block 111 is flush with the upper surface of the support plate 11. In use, the flexible membrane electrode 5 is placed on the support plate 11 of the housing 1. The receiving groove 112 opened in the support plate 11 is used to place the second electrode block 111, and the elastic member 1112 is connected to the bottom wall of the second electrode block 111 and the receiving groove 112 respectively. When the second electrode block 111 needs to be activated for detection, the first electrode block 22 on the control mounting strip 2 extends and presses down on the second electrode block 111. The second electrode block 111 moves downward under force and compresses the elastic element 1112, so that the moving contact 1111 on the second electrode block 111 abuts against the stationary contact 1121 in the receiving groove 112 to achieve a circuit connection. Then, the power supply circuit of the first electrode block 22 is disconnected, and the two second electrode blocks 111 in the conductive state can complete the power supply detection of the corresponding position of the membrane electrode 5, entering the bottom surface conductive detection mode. After the downward pressure of the first electrode block 22 is removed, the elastic element 1112 can automatically rebound to drive the second electrode block 111 to reset, so that the moving contact 1111 and the stationary contact 1121 separate from each other and disconnect the circuit. The on / off switching of the circuit of the second electrode block 111 is automatically realized by the mechanical pressing linkage structure.

[0039] Reference Figure 5 and Figure 6 The air blowing assembly 21 includes a first air nozzle 211 and a second air nozzle 212; both the first air nozzle 211 and the second air nozzle 212 are long, narrow slit-type air nozzles; the air jet direction of the first air nozzle 211 is arranged in the vertical direction, and the air jet direction of the second air nozzle 212 is inclined relative to the vertical direction, and the included angle between the two is an acute angle.

[0040] This invention enables the vertical flattening and lateral positioning adjustment of the membrane electrode 5 using nozzles with different orientations. This achieves a more uniform and comprehensive airflow range, allowing for simultaneous flattening and alignment of the membrane electrode 5, resulting in a better flattened and regular appearance. It solves the technical problem that a single airflow direction can only simply blow, failing to simultaneously flatten and align the membrane electrode 5, which can easily lead to local wrinkles and misalignment. In use, the flexible membrane electrode 5 is placed on the support plate 11 of the chassis 1. The two mounting strips 2 slide from the middle of the chassis 1 to both sides along the first guide rail 12. The air blowing assembly 21 on the mounting strip 2 includes a first nozzle 211 and a second nozzle 212. Both the first nozzle 211 and the second nozzle 212 are long and narrow slit nozzles. The first nozzle 211 sprays air in the vertical direction. The airflow can act downward on the surface of the membrane electrode 5 to flatten the membrane electrode 5 as a whole. The second nozzle 212 is arranged at an acute angle relative to the vertical direction. The airflow can generate a lateral thrust on the membrane electrode 5 to push the membrane electrode 5 into the correct position. The long and narrow slit structure can output a continuous and uniform airflow. With the different airflow directions of the two nozzles working together, the flexible membrane electrode 5 can be compacted and flattened, and the membrane electrode 5 can be pushed to the standard placement position, providing a flat and regular foundation for subsequent electrode contact conductivity testing.

[0041] Reference Figure 2 and Figure 3 A mounting base 3 is fixedly installed on the chassis 1; a connecting rod 31 is rotatably installed on the mounting base 3, and the connecting rod 31 is connected to the mounting base 3 through a torsion spring; a pressure block 311 for pressing the film electrode 5 is provided at the end of the connecting rod 31 away from the mounting base 3, and under the elastic force of the torsion spring, the pressure block 311 always tends to abut and press against the support plate 11.

[0042] This invention achieves the function of elastically pressing and limiting the membrane electrode 5 by relying on the elastic force of the torsion spring to drive the pressure block 311. The mounting base 3 is located in the middle of the chassis 1. The mounting base 3 is fixedly installed on the chassis 1, and a connecting rod 31 is rotatably installed on the mounting base 3. The connecting rod 31 is connected to the mounting base 3 through the torsion spring. The end of the connecting rod 31 away from the mounting base 3 is equipped with the pressure block 311. Under the elastic force of the torsion spring, the pressure block 311 always maintains the tendency to press towards the support plate 11. After the membrane electrode 5 is placed, the pressure block 311 presses against the edge of the membrane electrode 5 by the elastic force of the torsion spring, limiting and fixing the soft membrane electrode 5. During the sliding of the mounting strip 2 and the air blowing component 21 spraying air to flatten the membrane electrode 5, it can prevent the membrane electrode 5 from being blown away by the airflow. At the same time, the elastic pressing method will not damage the soft membrane electrode 5. Together with the arc-shaped support plate 11, it ensures that the membrane electrode 5 is placed flat and stable, providing stable detection conditions for subsequent conductivity detection.

[0043] Reference Figures 5 to 7The mounting strip 2 is provided with a photoelectric sensor 23; the support plate 11 is provided with a photosensitive receiver 113 for sensing and cooperating with the photoelectric sensor 23, and the number of the photosensitive receivers 113 is not less than two, and they are arranged one-to-one with the second electrode block 111.

[0044] This invention enables the photoelectric sensor 23 and the photosensitive receiver 113 to sense and match each other, and to accurately align and calibrate the positions of each second electrode block 111. In use, the photoelectric sensor 23 moves synchronously with the mounting strip 2 and forms a sensing interaction with the corresponding photosensitive receiver 113, thereby accurately positioning the stopping position of the mounting strip 2. This ensures that the first electrode block 22 can be accurately aligned with the corresponding second electrode block 111. Subsequently, when the first electrode block 22 extends and presses down on the second electrode block 111, it can accurately compress the elastic element 1112, allowing the moving contact 1111 on the second electrode block 111 to stably connect with the stationary contact 1121 in the receiving groove 112. Relying on photoelectric sensing alignment, the second electrode blocks 111 at different positions can be matched sequentially to complete multi-point power-on detection, accurately judging the coating uniformity at different positions of the membrane electrode 5. The entire alignment is automatic without manual adjustment, resulting in high positioning accuracy and more reliable detection point matching.

[0045] Reference Figure 2 and Figure 10 The chassis 1 is provided with a second guide rail 4, and the support plate 11 is slidably engaged with the second guide rail 4. An extension plate 41 connected to the support plate 11 is slidably mounted on the second guide rail 4. An elongated notch 411 is provided on the extension plate 41, and an airflow sensor is arranged at the elongated notch 411. A first rotary driver is mounted next to the second guide rail 4. The first rotary driver is used to drive the support plate 11 and the extension plate 41 to move back and forth along the second guide rail 4. When performing perforation detection on the membrane electrode 5, the airflow intensity is sensed by the airflow sensor at the elongated notch 411 to determine whether there is a perforation defect in the membrane electrode 5.

[0046] This invention enables the support plate 11 to slide back and forth along with the membrane electrode 5, and to detect perforation defects in the membrane electrode 5 by sensing airflow through the airflow sensor at the elongated notch 411. Before performing perforation detection on the membrane electrode 5, the pressure block 311 is released from its clamping limit on the membrane electrode 5. The posture of the support rod 131 is adjusted by the second rotary driver and linear driver on the support 13, so that the vacuum suction cup 132 adsorbs and fixes the two sides of the membrane electrode 5, slightly lifting the membrane electrode 5 and keeping it flat and taut to avoid excessive friction with the support plate 11 and deformation. At the same time, the blowing assembly 21 continuously outputs a constant airflow, which acts perpendicularly on the surface of the membrane electrode 5. When performing perforation detection on the membrane electrode 5, the first rotary actuator drives the support plate 11 and the membrane electrode 5 placed on the support plate 11 to move synchronously, so that the membrane electrode 5 passes directly above the elongated notch 411 on the extension plate 41. When the membrane electrode 5 is not perforated, the airflow is blocked by the membrane electrode 5, and the signal intensity detected by the airflow sensor is stable within the reference threshold range. When the membrane electrode 5 moves to the perforation defect position, the airflow passes through the hole and reaches the sensor through the elongated notch 411, and the signal intensity will show a significant increase or fluctuation. Based on the difference in airflow strength detected by the airflow sensor, it can be directly determined whether the membrane electrode 5 has a perforation defect. The entire detection system can be realized by using the existing sliding component in conjunction with the airflow sensor.

[0047] Reference Figure 1 and Figure 2 The chassis 1 is fixedly provided with a support 13, and a support rod 131 is hinged to the support 13; a vacuum suction cup 132 for adsorbing and fixing the membrane electrode 5 is assembled at the end of the support rod 131 away from the support 13; a second rotary driver and a linear driver are integrated inside the support 13, the second rotary driver is used to drive the support rod 131 to swing, and the linear driver is used to drive the support rod 131 to translate.

[0048] This invention realizes the function of adjusting the movement of the support rod 131 by the driver and using the vacuum suction cup 132 to adsorb and fix the position of both sides of the membrane electrode 5. It solves the technical problem that the soft membrane electrode 5 is prone to displacement, warping, and positional movement after the pressure block 311 is released, making it impossible to smoothly cooperate to complete the detection of perforation defects. In actual operation, the pressure block 311 is first released from its downward pressure limit on the membrane electrode 5. Then, the swing and translation angle of the support rod 131 are adjusted by the second rotary driver and the linear driver. The vacuum suction cups 132 at the ends of the two support rods 131 are respectively attached to the left and right sides of the membrane electrode 5. The membrane electrode 5 is stably adsorbed and fixed by the vacuum suction cups 132 to prevent the membrane electrode 5 from shifting or flipping. The membrane electrode 5 is then slightly pulled up by the linear driver. After the membrane electrode 5 is pulled up and straightened, there is a certain gap between the two sides and the support plate 11. The gap gradually narrows from the two sides to the middle position, so that only a small area of ​​the middle part of the membrane electrode 5 contacts the support plate 11. This avoids the membrane electrode 5 from being deformed and damaged by friction due to the large contact area between the support plate 11 and the membrane electrode 5 when the support plate 11 rotates. After the membrane electrode 5 is fixed in position, the second guide rail 4 and the first rotary driver drive the support plate 11 and the extension plate 41 to move back and forth, so as to smoothly carry out the subsequent perforation defect detection operation by using the long notch 411 in conjunction with the airflow sensor to sense the airflow intensity. The overall structure can quickly lock the posture of the membrane electrode 5 after the pressure block 311 is released, ensuring that the membrane electrode 5 always maintains a regular state during the movement of the support plate 11, so that the perforation detection process is stable and reliable.

[0049] Reference Figures 1 to 5 A multi-position integrated detection method for membrane electrodes includes the following steps: S1. Placement of materials: Place the membrane electrode 5 to be tested on the support plate 11 of the chassis 1 to complete the support placement of the membrane electrode 5. S2, Alignment and Sliding: Slide the two mounting strips 2 along the two first guide rails 12 on the chassis 1 to control the two mounting strips 2 to move from the middle position of the chassis 1 to both sides; S3, Airflow flattening: The air blowing component 21, which moves synchronously with the mounting strip 2, sprays airflow to purge and flatten the membrane electrode 5 on the support plate 11. S4. Conductivity Detection: Control the extension and retraction of the first electrode block 22 on the mounting strip 2 so that the first electrode block 22 contacts the flattened membrane electrode 5 and achieves conductive connection, thus completing the energization detection of the membrane electrode 5.

[0050] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. A multi-position integrated membrane electrode detection device, characterized in that, It includes a chassis (1), a support plate (11) and two mounting strips (2); the support plate (11) is mounted on the chassis (1) and is used to support the membrane electrode (5); The chassis (1) is provided with two first guide rails (12), and the two ends of the mounting strip (2) are respectively slidably engaged with the two first guide rails (12); The mounting strip (2) is integrated with an air blowing assembly (21) for jetting airflow and a first electrode block (22) that is retractably mounted on the mounting strip (2) for contacting the membrane electrode (5) to achieve conductive communication. In the working state, the two air blowing components (21) slide from the middle position of the chassis (1) to both sides along with the corresponding mounting strip (2), and blow the membrane electrode (5) placed on the support plate (11) flat by jetting air.

2. The membrane electrode multi-position integrated detection device according to claim 1, characterized in that, At least two second electrode blocks (111) are provided on the support plate (11); when the membrane electrode (5) is laid flat on the support plate (11) and simultaneously in contact with each of the second electrode blocks (111), the uniformity of the coating of the membrane electrode (5) is detected by means of the second electrode blocks (111).

3. The membrane electrode multi-position integrated detection device according to claim 1, characterized in that, The support plate (11) is configured as an arc-shaped structure, and the first guide rail (12) is also an arc-shaped structure; the arc axis of the first guide rail (12) is coaxial with the arc axis of the support plate (11).

4. The membrane electrode multi-position integrated detection device according to claim 2, characterized in that, The second electrode block (111) is provided with a moving contact (1111). The support plate (11) has a receiving groove (112) for accommodating the second electrode block (111), and the receiving groove (112) has a stationary contact (1121) for abutting against the moving contact (1111) to supply power. The second electrode block (111) is provided with an elastic element (1112), and the two ends of the elastic element (1112) are respectively connected to the bottom wall of the second electrode block (111) and the receiving groove (112).

5. The multi-position integrated membrane electrode detection device according to claim 1, characterized in that, The air blowing assembly (21) includes a first air nozzle (211) and a second air nozzle (212); both the first air nozzle (211) and the second air nozzle (212) are elongated narrow slit-type air nozzles; The first nozzle (211) is arranged in a vertical direction, and the second nozzle (212) is arranged in an angle relative to the vertical direction, with the included angle being an acute angle.

6. The membrane electrode multi-position integrated detection device according to claim 1, characterized in that, A mounting base (3) is fixedly installed on the chassis (1); A connecting rod (31) is rotatably mounted on the mounting base (3), and the connecting rod (31) is connected to the mounting base (3) through a torsion spring; The connecting rod (31) is provided with a pressure block (311) for pressing the film electrode (5) at one end away from the mounting base (3). Under the elastic force of the torsion spring, the pressure block (311) always tends to press against the support plate (11).

7. The membrane electrode multi-position integrated detection device according to claim 4, characterized in that, The mounting strip (2) is equipped with a photoelectric sensor (23); The support plate (11) is provided with a photosensitive receiver (113) for sensing and cooperating with the photoelectric sensor (23). There are no fewer than two photosensitive receivers (113), and they are arranged one-to-one with the second electrode block (111).

8. The membrane electrode multi-position integrated detection device according to claim 3, characterized in that, The chassis (1) is provided with a second guide rail (4), and the support plate (11) is slidably engaged with the second guide rail (4); An extension plate (41) connected to a support plate (11) is slidably mounted on the second guide rail (4). An elongated notch (411) is provided on the extension plate (41), and an airflow sensor is disposed at the elongated notch (411). A first rotary driver is mounted at the second guide rail (4). The first rotary driver is used to drive the support plate (11) and the extension plate (41) to move back and forth along the second guide rail (4). When performing perforation detection on the membrane electrode (5), the airflow intensity is sensed by the airflow sensor at the long notch (411) to determine whether the membrane electrode (5) has perforation defects.

9. The integrated membrane electrode multi-position detection device according to claim 8, characterized in that, A support (13) is fixedly provided on the chassis (1), and a support rod (131) is hinged on the support (13). The end of the support rod (131) away from the support (13) is equipped with a vacuum chuck (132) for adsorbing and fixing the membrane electrode (5). The support (13) integrates a second rotary driver and a linear driver. The second rotary driver is used to drive the support rod (131) to swing, and the linear driver is used to drive the support rod (131) to translate.

10. A method for integrated detection of multiple membrane electrodes, employing the integrated detection device for multiple membrane electrodes as described in any one of claims 1 to 9, characterized in that, Includes the following steps: S1. Placement of materials: Place the membrane electrode (5) to be tested on the support plate (11) of the chassis (1) to complete the support placement of the membrane electrode (5); S2, Alignment and Sliding: Make the two mounting strips (2) slide along the two first guide rails (12) on the chassis (1) to control the two mounting strips (2) to move from the middle position of the chassis (1) to both sides; S3, Airflow flattening: The air blowing assembly (21) moves synchronously with the mounting strip (2) and sprays airflow to purge and flatten the membrane electrode (5) on the support plate (11); S4. Conductivity detection: Control the extension and retraction of the first electrode block (22) on the mounting strip (2) so that the first electrode block (22) contacts the flattened membrane electrode (5) and achieves conductive connection, thus completing the energization detection of the membrane electrode (5).

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