A PEM electrolyzer or fuel cell stack assembly precision measurement device

Abstract

The utility model discloses a kind of PEM electrolytic cell or fuel cell stack assembly precision measuring device, including measurement area fixed component, laser measuring component and be used to drive laser measuring component and obtain measurement data along the lifting control component of measurement direction movement, the measurement area fixed component is equipped with the reference positioning surface for placing positioning to be measured component, reference positioning surface is equipped with the measurement reference component for calibrating measurement data along measurement direction, laser measuring component obtains the measurement data of measurement reference component, component to be measured simultaneously;By vertical gauge as measurement reference component, reference positioning surface is vertically converted, the reference surface of degree of misplacement and perpendicularity measurement is provided, realizes the electrolytic cell perpendicularity and degree of misplacement measurement of no contact, high accuracy, low to measurement environment requirement.

Description

Technical Field

[0001] This utility model relates to the field of fuel cell stack assembly measurement technology, specifically to a device for measuring the assembly accuracy of a PEM electrolyzer or fuel cell stack. Background Technology

[0002] Currently, the common method for measuring the misalignment and perpendicularity of assembled PEM electrolyzers or fuel cell stacks is manual measurement using contact-based measuring tools. However, manual measurement is inefficient and has high requirements for the measurement environment; similarly, the measurement tool itself is used to inspect the stack, which cannot handle subtle changes and measurement errors caused by assembly errors of the testing equipment, leading to inaccurate results. To address the shortcomings of existing measurement methods, we propose an improvement: a novel non-contact, high-precision laser displacement measurement method that has lower requirements for the measurement environment and allows for real-time calibration of the measurement benchmark. Utility Model Content

[0003] Technical objective: To address the shortcomings of existing fuel cell stack assembly accuracy measurement methods, this utility model discloses a PEM electrolyzer or fuel cell stack assembly accuracy measurement device.

[0004] Technical solution: To achieve the above technical objectives, the present invention adopts the following technical solution: A device for measuring the assembly accuracy of a PEM electrolyzer or fuel cell stack includes a measurement area fixing component, a laser measurement component, and a lifting control component for moving the laser measurement component along the measurement direction to acquire measurement data. The measurement area fixing component is provided with a reference positioning surface for placing and positioning the component to be measured. A measurement reference component for calibrating the measurement data is provided on the reference positioning surface along the measurement direction. The laser measurement component acquires the measurement data of the measurement reference component and the component to be measured simultaneously.

[0005] Preferably, the laser measurement component of this utility model includes a fixed platform and two laser displacement gauges that are fixedly mounted parallel to each other on the fixed platform. The laser displacement gauges correspond to the measurement reference component and the component to be measured, respectively. During measurement, the measurement data of the measurement reference component and the component to be measured are obtained by the two laser displacement gauges.

[0006] Preferably, the measuring area fixing component of this utility model includes a support plate at the bottom providing a reference positioning surface and a pressure plate arranged parallel to the support plate above the support plate. The pressure plate is fixed by a plurality of support rods arranged perpendicular to the surface of the support plate. A locking nut for locking the pressure plate is provided at the end of the support rod. The arrangement of the support rods divides the support plate into a placement area for the component to be measured. The measuring reference component is arranged outside the placement area of ​​the component to be measured. The component to be measured is pressed and fixed on the support plate by the locking nut and the pressure plate, with the measurement surface of the component to be measured facing the side where the laser measuring component is located.

[0007] Preferably, the measuring reference component of this utility model is a vertical gauge, one vertical side of which is fixed to the support plate, and the other vertical side faces the side where the laser measuring component is located.

[0008] Preferably, the lifting control component of this utility model includes a guide rail bracket and a lifting drive mechanism mounted on the guide rail bracket. The laser measuring component slides with the guide rail on the guide rail bracket, and the sliding direction is consistent with the moving direction of the laser measuring component during measurement. The lifting drive mechanism includes a lifting motor fixed to the end of the guide rail bracket and a screw fixed to the end of the lifting motor. The laser measuring component and the screw are threaded together to form a ball screw structure. The lifting motor drives the screw to rotate to lift the laser measuring component.

[0009] Beneficial Effects: This utility model discloses a PEM electrolyzer or fuel cell stack assembly accuracy measuring device. It employs two sets of laser displacement gauges: one set measures the data of the component to be measured, while the other set acquires data from the reference component. Real-time calibration is possible, and the electrolyzer misalignment is determined by reading the scanning waveform fluctuations of the two laser displacement gauges on a computer. The verticality of the electrolyzer is determined by observing the scanning distance. This utility model features a simple structure and easy installation, achieving an improvement in non-contact measurement and eliminating errors associated with contact measurements. The high-precision laser displacement gauges further enhance measurement accuracy. A vertical gauge is used to transform the plane, converting verticality measurement into planar distance measurement. High-precision motor control accurately controls the movement distance of the laser displacement gauges. Misalignment is obtained through scanning waveform fluctuations, and the measurement reference can be calibrated in real time, avoiding minor tilting and errors in the device. This makes it safer and more practical. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a structural diagram of the measuring area fixing component of this utility model; Figure 3 This is a schematic diagram showing the cooperation between the laser measuring component and the lifting control component of this utility model; Among them, 1-fixed platform, 2-laser displacement gauge, 3-support plate, 4-pressure plate, 5-support rod, 6-locking nut, 7-vertical gauge, 8-guide rail bracket, 9-lifting motor. Detailed Implementation

[0012] Reference will now be made in detail to embodiments of the present disclosure, one or more of which are set forth herein. Each embodiment and example is provided by way of explanation of the apparatus, composition, and materials of the present disclosure, and not by way of limitation. Rather, the following description provides convenient illustrations for implementing exemplary embodiments of the present disclosure. Indeed, it will be apparent to those skilled in the art that various modifications and variations can be made to the teachings of the present disclosure without departing from the scope or spirit of the present disclosure.

[0013] like Figures 1-3 As shown, this utility model discloses a PEM electrolyzer or fuel cell stack assembly accuracy measuring device for measuring the flatness of bipolar plates in a fuel cell stack. The device mainly includes a measuring area fixing component, a laser measuring component, and a lifting control component.

[0014] The measuring area fixing component includes a horizontal support plate 3, the upper surface of which serves as a reference positioning surface for placing the component to be measured. The component to be measured can be a PEM electrolyzer or a fuel cell stack, but the verticality and misalignment of other products or components can also be measured based on the measurement principle of this invention. Above the support plate 3, a pressure plate 4 is arranged parallel to it. Both the support plate 3 and the pressure plate 4 can be made of polished marble slabs or other materials that can provide a smooth surface. Several support rods 5 are arranged on the surface of the support plate 3. The support rods 5 pass through corresponding through holes on the pressure plate 4, and their lower ends are fixedly connected to the support plate 3 by threads. Each support rod 5 is equipped with a locking nut 6 at its upper end. By tightening the locking nut 6, the pressure plate 4 is pressed against the surface of the component to be measured for fixation. The layout of the support rods 5 naturally divides a rectangular area on the support plate 3 for placing the component to be measured, which is generally rectangular in shape and can be aligned with the assistance of the support rods 5.

[0015] On the support plate 3, outside the area where the component to be measured is placed, a high-precision vertical gauge 7 is fixedly installed as a measurement reference component. The vertical gauge 7 is tightly fitted and fixed to the reference positioning surface of the support plate 3 through its bottom surface, and one of its vertical sidewalls faces the laser measurement component, providing a known and height-constant reference surface.

[0016] The laser measurement component includes a fixed platform 1 on which two identical laser displacement gauges 2 are fixedly mounted in parallel. The laser emission direction of the two laser displacement gauges 2 is vertically downward. The laser beam of one laser displacement gauge 2 is vertically aligned with the top edge line of the vertical side wall of the vertical gauge 7, while the laser beam of the other laser displacement gauge 2 is aligned with the surface of the part to be measured, which is pressed against the support plate 3.

[0017] The lifting control component includes a guide rail bracket 8. The fixed platform 1 is slidably engaged with two linear guide rails fixed to the guide rail bracket 8 along the lifting direction. The lifting drive mechanism includes a servo lifting motor 9 fixed to the top of the guide rail bracket 8, whose output shaft is connected to a vertically mounted screw via a coupling. The fixed platform 1 is connected via a nut seat that mates with the screw or directly threaded to the screw, thus forming a ball screw structure. By controlling the forward and reverse rotation of the lifting motor 9, the entire laser measuring component can be driven to rise and fall smoothly and accurately in the vertical direction (i.e., the measuring direction).

[0018] The working process of this utility model is as follows: First, the assembled PEM electrolyzer or fuel cell stack is placed flat on the support plate 3 in the measurement area fixing component. The electrolyzer is then pressed down with the pressure plate 4 and secured with the lock nut 6. Next, the vertical gauge 7 is fixed against the support plate 3 along its short vertical side. Following this, the two high-precision laser displacement gauges 2 of the laser measurement component are connected to the computer to transmit and process the measured data, obtaining the corresponding perpendicularity and misalignment results.

[0019] Before the measurement begins, the lifting motor 9 is first controlled to move the fixed platform 1, so that the laser displacement gauge 2 scans the vertical long side of the vertical gauge 7 for adjustment testing. During the formal measurement, the two laser displacement gauges 2 are activated and scanned respectively across the vertical gauge 7 and the side of the PEM electrolyzer or fuel cell stack to be measured. Finally, the waveform fluctuations of the two laser displacement gauges are read on the computer to determine the misalignment of the electrolyzer, and the scanning distance is observed to determine the verticality of the electrolyzer.

[0020] This invention's side-measuring device solves the errors caused by contact measurement, while the high-precision laser displacement meter improves measurement accuracy. A vertical gauge is used to transform the plane, converting verticality measurement into planar distance measurement. High-precision motor control accurately controls the movement distance of the laser displacement meter. Misalignment is obtained by scanning waveform fluctuations, and the measurement benchmark can be calibrated in real time, avoiding minor tilting and errors in the device.

[0021] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A device for measuring the assembly accuracy of a PEM electrolyzer or fuel cell stack, characterized in that, The device includes a measurement area fixing component, a laser measurement component, and a lifting control component for moving the laser measurement component along the measurement direction to acquire measurement data. The measurement area fixing component is provided with a reference positioning surface for placing and positioning the component to be measured. A measurement reference component for calibrating the measurement data is provided on the reference positioning surface along the measurement direction. The laser measurement component acquires measurement data from both the measurement reference component and the component to be measured.

2. The device for measuring the assembly accuracy of a PEM electrolyzer or fuel cell stack according to claim 1, characterized in that, The laser measurement component includes a fixed platform (1) and two laser displacement gauges (2) that are fixedly mounted on the fixed platform (1) in parallel with each other. The laser displacement gauges (2) correspond to the measurement reference component and the component to be measured, respectively. During measurement, the measurement data of the measurement reference component and the component to be measured are obtained by the two laser displacement gauges (2).

3. The PEM electrolyzer or fuel cell stack assembly accuracy measuring device according to claim 1, characterized in that, The measuring area fixing component includes a support plate (3) at the bottom providing a reference positioning surface and a pressure plate (4) arranged above the support plate (3) and parallel to the support plate (3). The pressure plate (4) is fixed by a number of support rods (5) arranged perpendicular to the surface of the support plate (3). A locking nut (6) for locking the pressure plate (4) is provided at the end of the support rod (5). The support rods (5) are arranged to divide the placement area of ​​the component to be measured on the support plate (3). The measuring reference component is set outside the placement area of ​​the component to be measured. The component to be measured is pressed and fixed on the support plate (3) by the locking nut (6) and the pressure plate (4). The measurement surface of the component to be measured faces the side where the laser measuring component is located.

4. The PEM electrolyzer or fuel cell stack assembly accuracy measuring device according to claim 3, characterized in that, The measurement reference component adopts a vertical gauge (7), one vertical side of which is fixed to the support plate (3), and the other vertical side faces the side where the laser measurement component is located.

5. The device for measuring the assembly accuracy of a PEM electrolyzer or fuel cell stack according to claim 1, characterized in that, The lifting control component includes a guide rail bracket (8) and a lifting drive mechanism mounted on the guide rail bracket (8). The laser measuring component slides with the guide rail on the guide rail bracket (8), and the sliding direction is consistent with the moving direction of the laser measuring component during measurement. The lifting drive mechanism includes a lifting motor (9) fixed at the end of the guide rail bracket (8) and a screw fixed at the end of the lifting motor (9). The laser measuring component and the screw are threaded together to form a ball screw structure. The lifting motor (9) drives the screw to rotate to lift the laser measuring component.

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