A device for testing the voltage distribution of a fuel cell membrane electrode.

Abstract

This utility model discloses a fuel cell membrane electrode voltage distribution data testing device, including a base, a support frame fixedly connected to the outside of the base, a movable column movably connected to the outside of the support frame, a connecting rod slidably connected to the inner wall of the support frame, a slot formed at the end of the connecting rod away from the support frame, an upper pressure plate detachably connected to the outside of the connecting rod, two sliding plates slidably connected to the inner wall of the upper pressure plate, a locking strip fixedly connected to the outside of each of the two sliding plates, an elastic element fixedly connected to the outside of each sliding plate, a groove formed on the outside of each locking strip, a connecting groove formed on the inner wall of the upper pressure plate, and multiple positioning strips fixedly connected to the four corners of the upper pressure plate. In this utility model, the locking strips move away from the inside of the slots, which allows for quick disassembly or replacement of the upper pressure plate for subsequent testing of fuel cell membrane electrode voltage distribution data, improving work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of fuel cell membrane electrode voltage distribution data detection technology, and more specifically, to a fuel cell membrane electrode voltage distribution data testing device. Background Technology

[0002] A fuel cell membrane electrode voltage distribution data testing device collects voltage signals by contacting the membrane electrode with a probe array. The signals are then converted by a data acquisition system (such as an Advantech PCI-1713U board) and analyzed by a signal processing unit on a host computer. The voltage acquisition board, as a key PCB component, can be tested for its electrical performance and circuit connectivity using a PCB test fixture, ensuring stable and reliable operation of the testing device and providing accurate data support for fuel cell performance optimization.

[0003] A PCB test fixture mainly consists of a frame, fixtures, a bed of test probes, and an electrical control system. The fixtures in the frame are used to fix the PCB board and ensure its stability during testing; the bed of test probes contacts the test points on the PCB board, and the electrical control system applies electrical signals. By detecting parameters such as current and voltage, it determines whether there are electrical performance faults such as short circuits or open circuits on the PCB board.

[0004] In existing technologies, the frame fixtures in some PCB test fixtures are still installed and disassembled using traditional bolts, which is cumbersome and time-consuming. Furthermore, there is no buffering during the probe-assisted contact testing of the board. If the pressure is too high during pressing, the probe will directly and rigidly contact the solder joints and circuits on the circuit board, which can easily cause solder joints to fall off, circuits to be scratched, and affect product performance and yield. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a fuel cell membrane electrode voltage distribution data testing device to solve the problem that in the prior art, the frame fixture part of the PCB test rack is still installed and disassembled by traditional bolts, which is cumbersome and time-consuming, and cannot be buffered during the process of pressing the board with probes for contact testing.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a fuel cell membrane electrode voltage distribution data testing device, comprising...

[0007] A base is provided, with a support frame fixedly connected to its exterior. A movable column is movably connected to the exterior of the support frame. A connecting rod is slidably connected to the inner wall of the support frame. A slot is provided at the end of the connecting rod away from the support frame. An upper pressure plate is detachably connected to the exterior of the connecting rod. Two sliding plates are slidably connected to the inner wall of the upper pressure plate. Each of the two sliding plates is fixedly connected to a retaining strip. An elastic element is fixedly connected to the exterior of each sliding plate. A groove is provided on the exterior of each retaining strip. A connecting groove is provided on the inner wall of the upper pressure plate.

[0008] Multiple positioning strips are fixedly connected to the four corners of the upper pressure plate. Pressure blocks are fixedly connected to the outside of the multiple positioning strips. Sliding sleeves are slidably connected to the outside of the positioning strips. Elastic element II is fixedly connected to the outside of the pressure blocks. A lower pressure plate is fixedly connected to the end of the sliding sleeve away from the positioning strip.

[0009] The end of the sliding sleeve away from the lower pressure plate is slidably connected to the inner wall of the upper pressure plate, and the outer side of the pressure block is slidably connected to the inner wall of the sliding sleeve.

[0010] The outer side of the card strip is slidably connected to the inner wall of the upper pressure plate, and the outer side of the card strip is engaged with the inner wall of the card slot.

[0011] The end of the second elastic element away from the pressure block is fixedly connected to the inner wall of the sliding sleeve, and the end of the first elastic element away from the sliding plate is fixedly connected to the inner wall of the upper pressure plate.

[0012] The end of the movable column away from the support frame is movably connected to the outside of the connecting rod, and the outside of the lower pressure plate is slidably connected to the inner wall of the base.

[0013] The end of the connecting rod away from the movable column is detachably connected to the inner wall of the connecting groove, and the outer part of the locking strip is engaged with the inner wall of the connecting rod.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] In the above scheme, firstly, by pulling the locking strips on both sides of the upper pressure plate, the locking strips will leave the inside of the slot in the connecting rod and will no longer be engaged. During the movement of the locking strips, the sliding plate will squeeze the elastic element 1. After being squeezed, the elastic element 1 will contract and release space, satisfying the requirement that the locking strips leave the inside of the slot. This allows the upper pressure plate to be quickly disassembled or replaced for subsequent testing of fuel cell membrane electrode voltage distribution data, thus improving work efficiency.

[0016] In the above scheme, during the testing process, the probes in the upper and lower pressure plates will test the circuit board in the base. When the probes press against the circuit board, a certain pressure will be generated. At this time, the pressure block connected to the positioning strip in the upper pressure plate will press the elastic element two in the sliding sleeve, causing the elastic element two to deform and contract, which plays a role in buffering and protecting the circuit board. This prevents the probes from damaging the solder joints and circuits on the circuit board due to excessive downward pressure, and also prevents excessive wear of the probes, thus extending the service life of the probes. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the card strip structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the connecting rod structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the lower pressure plate structure of this utility model;

[0021] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0022] Figure 6 for Figure 4 Enlarged view of point B in the middle.

[0023] [Figure Labels]

[0024] 1. Base; 2. Support frame; 3. Movable column; 4. Connecting rod; 5. Slot; 6. Upper pressure plate; 7. Slide plate; 8. Locking strip; 9. Elastic element one; 10. Groove; 11. Connecting groove; 12. Positioning strip; 13. Pressure block; 14. Sliding sleeve; 15. Elastic element two; 16. Lower pressure plate. Detailed Implementation

[0025] To make the technical problems, technical solutions and advantages of this utility model clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0026] As attached Figure 1 To be continued Figure 6 An embodiment of this utility model provides a fuel cell membrane electrode voltage distribution data testing device, including...

[0027] The base 1 receives voltage signals from a voltage acquisition board, which are differential voltage signals for each zone of the membrane electrode assembly. These signals are transmitted via cables to an analog PCI board for analog-to-digital conversion. The converted voltage signals are displayed in digital form through a host computer module connected to the base 1. A support frame 2 is fixedly connected to the outside of the base 1, and a movable column 3 is movably connected to the outside of the support frame 2. The movable column 3 can rotate around the connection point. A slot 5 is provided at the end of the connecting rod 4 away from the support frame 2. An upper pressure plate 6 is detachably connected to the outside of the connecting rod 4. The upper pressure plate 6 is used to install test probes and apply appropriate pressure to the fuel cell membrane electrode assembly during testing. Two sliding plates 7 are slidably connected to the inner wall of the upper pressure plate 6. The two sliding plates 7 can slide on the inner wall of the upper pressure plate 6. A retaining strip 8 is fixedly connected to the outside of each of the two sliding plates 7. The outside of the retaining strip 8 is slidably connected to the inner wall of the upper pressure plate 6 and engages with the inner wall of the slot 5. The engagement of the retaining strip 8 and the slot 5 achieves a stable connection between the upper pressure plate 6 and the connecting rod 4.

[0028] The slide plate 7 is externally fixedly connected to an elastic element 9. The end of the elastic element 9 away from the slide plate 7 is fixedly connected to the inner wall of the upper pressure plate 6. When the locking strip 8 is pulled, the slide plate 7 will squeeze the elastic element 9, causing the elastic element 9 to contract and store elastic potential energy, providing power for the reset of the locking strip 8. The locking strip 8 has a groove 10 on its outside, which facilitates the operation of the locking strip 8 by the operator. The inner wall of the upper pressure plate 6 has a connecting groove 11, which is used to accommodate one end of the connecting rod 4, providing positioning and support for the connection between the upper pressure plate 6 and the connecting rod 4.

[0029] Multiple positioning strips 12 are fixedly connected to the four corners of the upper pressure plate 6. The multiple positioning strips 12 are used to ensure the accurate relative position of the upper pressure plate 6 and the lower pressure plate 16, thereby ensuring that the test probe can be accurately aligned with the test point of the board in the base 1. The multiple positioning strips 12 are fixedly connected to the outside of the pressure block 13. The pressure block 13 is slidably connected to the inner wall of the sliding sleeve 14. When the probe squeezes the board, the pressure block 13 can slide inside the sliding sleeve 14, providing space for the compression of the elastic element 15.

[0030] A sliding sleeve 14 is slidably connected to the outside of the positioning strip 12. A lower pressure plate 16 is fixedly connected to the end of the sliding sleeve 14 away from the positioning strip 12. The sliding sleeve 14 can slide along the positioning strip 12 to ensure that the lower pressure plate 16 can move smoothly relative to the upper pressure plate 6. An elastic element 2 15 is fixedly connected to the outside of the pressure block 13. The end of the elastic element 2 15 away from the pressure block 13 is fixedly connected to the inner wall of the sliding sleeve 14. When the probe squeezes the plate and generates pressure, the pressure block 13 will squeeze the elastic element 2 15, causing the elastic element 2 15 to contract and absorb energy, thus playing a buffering and protective role.

[0031] The end of the sliding sleeve 14 away from the lower pressure plate 16 is slidably connected to the inner wall of the upper pressure plate 6, and the outer side of the pressure block 13 is slidably connected to the inner wall of the sliding sleeve 14, ensuring smooth relative movement between the upper pressure plate 6, the lower pressure plate 16 and the positioning strip 12, and ensuring the effectiveness of the buffer mechanism.

[0032] The outer side of the clip 8 is slidably connected to the inner wall of the upper pressure plate 6, and the outer side of the clip 8 is engaged with the inner wall of the slot 5. By engaging and disengaging the clip 8 in the slot 5, the upper pressure plate 6 can be quickly installed and disassembled, which facilitates the maintenance and replacement of parts of the testing device.

[0033] The end of the elastic element 15 away from the pressure block 13 is fixedly connected to the inner wall of the sliding sleeve 14, and the end of the elastic element 9 away from the sliding plate 7 is fixedly connected to the inner wall of the upper pressure plate 6. This ensures that the elastic element 9 and the elastic element 15 can stably generate elastic deformation when subjected to force, providing reliable buffering and reset functions for the device.

[0034] The end of the movable column 3 away from the support frame 2 is movably connected to the outside of the connecting rod 4. The outside of the lower pressure plate 16 is slidably connected to the inner wall of the base 1. The rotation of the movable column 3 can drive the connecting rod 4 to move up and down, so that the upper pressure plate 6 and the lower pressure plate 16 can be tested after the plate is squeezed and connected by the probe, which is convenient for placing and removing the fuel cell membrane electrode. The sliding of the lower pressure plate 16 on the inner wall of the base 1 ensures the stability during the test.

[0035] The end of the connecting rod 4 away from the movable column 3 is detachably connected to the inner wall of the connecting groove 11. The outer part of the locking strip 8 is locked to the inner wall of the connecting rod 4, making the connection between the upper pressure plate 6 and the connecting rod 4 more stable, and also making it easier to disassemble and replace the upper pressure plate 6.

[0036] The working process of this utility model is as follows:

[0037] First, by pulling the locking strips 8 on both sides of the upper pressure plate 6, the locking strips 8 will leave the inside of the slot 5 in the connecting rod 4 and will no longer be engaged. During the movement, the locking strips 8 will squeeze the elastic element 9 through the sliding plate 7. After being squeezed, the elastic element 9 will contract and release space, allowing the locking strips 8 to leave the inside of the slot 5. This allows the upper pressure plate 6 to be quickly disassembled or replaced for subsequent testing of the fuel cell membrane electrode voltage distribution data, thus improving work efficiency.

[0038] During the test, the probes in the upper pressure plate 6 and the lower pressure plate 16 will test the circuit board in the base 1. When the probe presses against the circuit board, a certain pressure will be generated. At this time, the pressure block 13 connected to the positioning strip 12 in the upper pressure plate 6 will press the elastic element 15 in the sliding sleeve 14, causing the elastic element 15 to deform and contract, which plays a role in buffering and protecting the circuit board. This prevents the probe from damaging the solder joints and circuits on the circuit board due to excessive downward pressure, and also prevents excessive wear of the probe, thus extending the service life of the probe.

[0039] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0040] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0041] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for testing the voltage distribution data of a fuel cell membrane electrode assembly, characterized in that, Includes a base (1), a support frame (2) fixedly connected to the outside of the base (1), a movable column (3) movably connected to the outside of the support frame (2), a connecting rod (4) slidably connected to the inner wall of the support frame (2), a slot (5) is provided at the end of the connecting rod (4) away from the support frame (2), an upper pressure plate (6) is detachably connected to the outside of the connecting rod (4), two sliding plates (7) are slidably connected to the inner wall of the upper pressure plate (6), a locking strip (8) is fixedly connected to the outside of each of the two sliding plates (7), an elastic element (9) is fixedly connected to the outside of the sliding plate (7), a groove (10) is provided on the outside of the locking strip (8), and a connecting groove (11) is provided on the inner wall of the upper pressure plate (6).

2. The fuel cell membrane electrode voltage distribution data testing device according to claim 1, characterized in that, Multiple positioning strips (12) are fixedly connected to the four corners of the upper pressure plate (6). Pressure blocks (13) are fixedly connected to the outside of the multiple positioning strips (12). Sliding sleeves (14) are slidably connected to the outside of the positioning strips (12). Elastic element II (15) is fixedly connected to the outside of the pressure block (13). A lower pressure plate (16) is fixedly connected to the end of the sliding sleeve (14) away from the positioning strips (12).

3. The fuel cell membrane electrode voltage distribution data testing device according to claim 2, characterized in that, The end of the sliding sleeve (14) away from the lower pressure plate (16) is slidably connected to the inner wall of the upper pressure plate (6), and the outer side of the pressure block (13) is slidably connected to the inner wall of the sliding sleeve (14).

4. The fuel cell membrane electrode voltage distribution data testing device according to claim 1, characterized in that, The outer side of the card strip (8) is slidably connected to the inner wall of the upper pressure plate (6), and the outer side of the card strip (8) is engaged with the inner wall of the card slot (5).

5. The fuel cell membrane electrode voltage distribution data testing device according to claim 2, characterized in that, The end of the second elastic element (15) away from the pressure block (13) is fixedly connected to the inner wall of the sliding sleeve (14), and the end of the first elastic element (9) away from the sliding plate (7) is fixedly connected to the inner wall of the upper pressure plate (6).

6. The fuel cell membrane electrode voltage distribution data testing device according to claim 2, characterized in that, The end of the movable column (3) away from the support frame (2) is movably connected to the outside of the connecting rod (4), and the outside of the lower pressure plate (16) is slidably connected to the inner wall of the base (1).

7. The fuel cell membrane electrode voltage distribution data testing device according to claim 1, characterized in that, The end of the connecting rod (4) away from the movable column (3) is detachably connected to the inner wall of the connecting groove (11), and the outer part of the locking strip (8) is locked to the inner wall of the connecting rod (4).

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