Airtightness detection tool for hydrogen energy membrane electrode

Abstract

The utility model relates to the technical field of hydrogen energy membrane electrode airtightness detection, in particular to a hydrogen energy membrane electrode airtightness detection tool. The device comprises a cylinder which is mounted on the upper end surface of a frame; the lower jig plate is mounted on the upper surface of the tool base; the adjusting device comprises a limiting assembly and a protection assembly; the limiting assemblies are arranged on the surfaces of the peripheral corners of the lower jig plate. The upper jig plate is fixedly connected with the output end of the air cylinder through a protection assembly. Airflow holes are formed in the inner walls of the two sides of the upper jig plate; the limiting assembly comprises a positioning plate. The problems that fuel cell system electric piles with different powers and performances need different bipolar plates, different testing devices and testing tools generally need to be customized for membrane electrode airtightness detection, and in the membrane electrode airtightness testing process, membrane electrode positioning is not accurate, an airtight device is poor, and the testing efficiency is poor are solved. And thus, the problem that the membrane electrode is inconvenient to detect is solved.

Description

Technical Field

[0001] This application relates to the technical field of airtight detection of hydrogen energy membrane electrodes, and particularly to an airtight detection tooling for hydrogen energy membrane electrodes. Background Art

[0002] The hydrogen battery membrane electrode is a multi-layer sheet structure, and each layer is encapsulated with glue. The quality of the glue pressing directly affects the yield of the hydrogen battery membrane electrode. The quality of the membrane electrode will directly affect the performance of the stack. Therefore, during the stack assembly process, it is necessary to perform airtight detection on a single membrane electrode before stacking. At this time, a detection tooling will be used for auxiliary operation, which is relatively common in the airtight detection of membrane electrodes.

[0003] In the prior art, such as the utility model with the publication number CN213779392U, it specifically discloses an airtight detection tooling and an airtight detection device, including: a pressing plate body and a buffer member installed on the pressing plate body; the buffer member is provided with a plurality of ventilation holes, and the plurality of ventilation holes are arranged at intervals; the pressing plate body is used to cooperate with the test sample, and a test air chamber is formed between the pressing plate body and the test sample, and the plurality of ventilation holes are all communicated with the test air chamber. The airtight detection tooling provided by this utility model can uniformly introduce gas into the test air chamber through a plurality of air holes, which can avoid excessive local pressure changes, and further avoid damage to the test sample caused by pressure impact.

[0004] In the airtight detection of membrane electrodes, in the prior art, the demand for hydrogen fuel cell systems is increasing. Different bipolar plates are required for fuel cell system stacks with different powers and performances. For the airtight detection of membrane electrodes, generally different test equipment and test toolings need to be customized. During the airtight test of membrane electrodes, the membrane electrode may be misaligned and the airtightness may be poor, resulting in the problem of inconvenient detection of the membrane electrode. Summary of the Utility Model

[0005] One technical problem to be solved by this application is: Different bipolar plates are required for fuel cell system stacks with different powers and performances. Generally, different test equipment and test toolings need to be customized. During the airtight test of membrane electrodes, the membrane electrode may be misaligned and the airtightness may be poor, resulting in the problem of inconvenient detection of the membrane electrode.

[0006] To solve the above technical problem, the embodiment of this application provides an airtight detection tooling for hydrogen energy membrane electrodes, including: a tooling base, and an installation frame is installed on the upper surface of the tooling base;

[0007] A cylinder, which is installed on the upper surface of the cylinder mounting frame;

[0008] A lower jig plate, which is installed on the upper surface of the tooling base;

[0009] Adjusting device, the adjusting device includes a limit component and a protection component; the limit component is arranged on the four peripheral corner surfaces of the lower fixture plate; and

[0010] Upper fixture plate, the upper fixture plate is fixedly connected to the output end of the cylinder by means of the protection component; air flow holes are opened on both inner walls of the upper fixture plate;

[0011] Among them, the limit component includes a positioning plate, the lower surface of the positioning plate is fixedly connected to the surface of the lower fixture plate, a sliding frame is slidably connected to the upper surface of the positioning plate, a mounting frame is fixedly connected to one side of the sliding frame, and a positioning block is inserted into the inner wall of the mounting frame. The cross section of the positioning block is in an "L" shape;

[0012] The protection component includes a connecting column, the upper end of the connecting column is fixedly connected to the output end of the cylinder, a rotating frame is slidably connected to the surface of the connecting column, a connecting column is fixedly connected to the position corresponding to the connecting column on the upper surface of the upper fixture plate, the arc surface of the connecting column is inserted into the inner wall of the connecting column, and the inner wall of the rotating frame is threadedly connected to the arc surface of the connecting column.

[0013] In some embodiments, the air flow holes include an air inlet hole and an air outlet hole. The air inlet hole is opened on the side wall of the upper fixture plate, and the air outlet hole is opened on the lower surface of the upper fixture plate.

[0014] In some embodiments, the limit component further includes a rotating plate. The upper end of the rotating plate is rotatably connected to the end of the sliding frame away from the positioning block. The cross section of the rotating plate is in an "L" shape. A plurality of clamping grooves are opened on the side wall of the positioning plate, and the short arm end of the rotating plate is clamped with the inner wall of the clamping groove. Coil springs are sleeved at both ends of the inner wall arc surface of the sliding frame close to the rotating plate, and both ends of the coil spring are fixedly connected to the rotating plate and the sliding frame respectively.

[0015] In some embodiments, a sliding groove is opened on the upper surface of the positioning plate, and the inner wall of the sliding groove is slidably connected to the bottom surface of the sliding frame.

[0016] In some embodiments, scale plates are fixedly connected to the positions corresponding to the positioning plates on the four peripheral corner surfaces of the lower fixture plate, and the length dimension of the scale plate is adapted to the length dimension of the positioning plate.

[0017] In some embodiments, the protection component further includes two embedding grooves. The two embedding grooves are opened on both side surfaces of the connecting column. Insertion holes are opened on the bottom surface of the connecting column corresponding to the embedding grooves. Insertion rods are inserted into the inner walls of the embedding grooves, and one end of the insertion rod is inserted into the inner wall of the insertion hole. The cross section dimension of the insertion rod is adapted to the cross section dimension of the connecting column.

[0018] In some embodiments, an engagement groove is opened on the arc surface of the connecting column, and the arc surface of the engagement groove slidably penetrates through the surface of the rotating frame.

[0019] In some embodiments, a friction sleeve is fixedly connected to the arc surface of the rotating frame. The friction sleeve is a rubber sleeve, and anti-slip patterns are provided on the surface of the friction sleeve.

[0020] Through the above technical solution, for the hydrogen energy membrane electrode airtight detection tooling provided by the present application, different bipolar plates are required for fuel cell system stacks with different powers and performances. For membrane electrode airtight detection, generally different test equipment and test tooling need to be customized. At this time, with the help of the positioning block in the limit component of the adjustment device, the entire membrane electrode can be accurately positioned. At the same time, the connection column in the protection component is docked with the connecting column, so as to facilitate the replacement and limitation of the upper jig plate. And the upper jig plate has a design imitating the bipolar plate flow channel, which can more accurately simulate the actual situation during the pressing process of the membrane electrode, so that the airtight detection result is more accurate. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 It is a schematic three-dimensional structure diagram of the hydrogen energy membrane electrode airtight detection tooling disclosed in the embodiments of the present application;

[0023] Figure 2 It is a schematic structural diagram of the adjustment device of the hydrogen energy membrane electrode airtight detection tooling disclosed in the embodiments of the present application;

[0024] Figure 3 It is a schematic exploded view of the limit component of the hydrogen energy membrane electrode airtight detection tooling disclosed in the embodiments of the present application;

[0025] Figure 4 It is a schematic cross-sectional view of the upper jig plate of the hydrogen energy membrane electrode airtight detection tooling disclosed in the embodiments of the present application;

[0026] Figure 5 It is a schematic structural diagram of the protection component of the hydrogen energy membrane electrode airtight detection tooling disclosed in the embodiments of the present application.

[0027] Description of the Reference Numerals:

[0028] 1. Tooling base; 2. Mounting frame; 3. Cylinder; 4. Adjusting device; 41. Limiting component; 411. Positioning plate; 412. Sliding frame; 413. Positioning block; 414. Chute; 415. Rotating plate; 416. Torsion spring; 417. Mosaic frame; 418. Scale plate; 419. Card slot; 42. Protection component; 421. Connecting column; 422. Connecting groove; 423. Connecting post; 424. Plug rod; 425. Jack; 426. Rotating frame; 427. Friction sleeve; 428. Mosaic groove; 5. Upper jig plate; 51. Air flow hole; 511. Air inlet hole; 512. Air outlet hole; 6. Lower jig plate. Detailed implementation manners

[0029] The following further describes in detail the implementation manners of the present application in conjunction with the drawings and embodiments. The detailed descriptions and drawings of the following embodiments are used to exemplarily illustrate the principles of the present application, but cannot be used to limit the scope of the present application. The present application can be implemented in many different forms, not limited to the specific embodiments disclosed in the text, but including all technical solutions falling within the scope of the claims.

[0030] These embodiments of the present application are provided to make the present application thorough and complete, and to fully convey the scope of the present application to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangements of the components and steps, the components of the materials, the numerical expressions and values described in these embodiments should be construed as merely exemplary, rather than as limitations.

[0031] It should be noted that in the description of the present application, unless otherwise specified, the meaning of "a plurality" is greater than or equal to two; the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present application. When the absolute position of the described object changes, the relative position relationship may also change accordingly.

[0032] In addition, the "first", "second" and similar terms used in the present application do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range. The terms "including" or "comprising" and the like mean that the elements before the word cover the elements listed after the word, and do not exclude the possibility of also covering other elements.

[0033] It should also be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installation", "connection", and "linkage" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances. When it is described that a specific device is located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0034] All terms used in this application have the same meanings as those understood by those of ordinary skill in the art to which this application belongs, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, such as those, should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense, unless specifically defined as such here.

[0035] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the specification.

[0036] Referring to Figure 1 and Figure 4 As shown, the present utility model provides a technical solution: a hydrogen energy membrane electrode airtight detection tooling, including a tooling base 1, and an installation frame 2 is installed on the upper surface of the tooling base 1;

[0037] A cylinder 3, and the cylinder 3 is installed on the upper surface of the installation frame 2;

[0038] A lower fixture plate 6, and the lower fixture plate 6 is installed on the upper surface of the tooling base 1;

[0039] An adjusting device 4, and the adjusting device 4 includes a limiting component 41 and a protection component 42; the limiting component 41 is arranged on the four peripheral corner surfaces of the lower fixture plate 6; and

[0040] An upper fixture plate 5, and the upper fixture plate 5 is fixedly connected to the output end of the cylinder 3 by means of the protection component 42; air flow holes 51 are provided on both inner walls of the upper fixture plate 5.

[0041] Next, the specific settings and functions of the adjusting device 4 will be described in detail.

[0042] Referring to Figure 2 、 Figure 3 and Figure 5As shown in the figure, in this embodiment: The limiting component 41 includes a positioning plate 411. The lower surface of the positioning plate 411 is fixedly connected to the surface of the lower jig plate 6. A sliding frame 412 is slidably connected to the upper surface of the positioning plate 411. A mosaic frame 417 is fixedly connected to one side of the sliding frame 412. A positioning block 413 is inserted into the inner wall of the mosaic frame 417. The cross-section of the positioning block 413 is in an "L" shape. When positioning the membrane electrode sheet with the positioning blocks 413 on the four corners of the surface of the lower jig plate 6, the position of the positioning block 413 can be adjusted to facilitate the positioning of membrane electrode sheets of different sizes. At the same time, the mosaic frame 417 can facilitate the quick disassembly and replacement of the positioning block 413.

[0043] The protection component 42 includes an adapter column 421. The upper end of the adapter column 421 is fixedly connected to the output end of the air cylinder 3. A rotating frame 426 is slidably connected to the surface of the adapter column 421. A connecting column 423 is fixedly connected to the upper surface of the upper jig plate 5 corresponding to the position of the adapter column 421. The arc surface of the adapter column 421 is inserted into the inner wall of the connecting column 423. The inner wall of the rotating frame 426 is threadedly connected to the arc surface of the connecting column 423. When the upper jig plate 5 is used for airtightness detection of the membrane electrode sheet for a long time, the adapter column 421 and the connecting column 423 are docked, and then the rotating frame 426 slidably penetrating the surface of the adapter column 421 is used for threaded docking, so as to facilitate and effectively replace and limit the upper jig plate 5.

[0044] The air flow holes 51 include an air inlet hole 511 and an air outlet hole 512. The air inlet hole 511 is opened on the side wall of the upper jig plate 5, and the air outlet hole 512 is opened on the lower surface of the upper jig plate 5. The contact surface between the upper jig plate 5 and the membrane electrode is designed with a bipolar plate flow channel design, which can more accurately simulate the actual situation of the membrane electrode in the stack, so as to make the airtightness detection result more accurate.

[0045] The limit component 41 further includes a rotating plate 415. The upper end of the rotating plate 415 is rotatably connected to one end of the sliding frame 412 away from the positioning block 413. The cross-section of the rotating plate 415 is in an "L" shape. A plurality of clamping grooves 419 are formed on the side wall of the positioning plate 411. The short arm end of the rotating plate 415 is clamped with the inner wall of the clamping groove 419. Coil springs 416 are sleeved on both ends of the inner arc surface of the sliding frame 412 close to the rotating plate 415. The two ends of the coil spring 416 are respectively fixedly connected to the rotating plate 415 and the sliding frame 412. By using the clamping groove 419 formed on one side of the positioning plate 411 and the torsional force generated by the coil spring 416 at one end of the sliding frame 412, the rotating plate 415 is clamped with the inner wall of the clamping groove 419. A sliding groove 414 is formed on the upper surface of the positioning plate 411. The inner wall of the sliding groove 414 is slidably connected to the bottom surface of the sliding frame 412. At this time, the sliding frame 412 can drive the positioning block 413 to slide and limit the horizontal position along the surface of the positioning plate 411. Scale plates 418 are fixedly connected to the positions corresponding to the positioning plates 411 on the peripheral corner surfaces of the lower jig plate 6. The length dimension of the scale plate 418 is adapted to the length dimension of the positioning plate 411. The distance adjustment of the horizontal movement of the positioning block 413 can be observed by using the scale plate 418.

[0046] The protection component 42 further includes two embedding grooves 428. The two embedding grooves 428 are formed on the two side surfaces of the connecting column 423. Insertion holes 425 are formed on the bottom surface of the connecting column 421 corresponding to the positions of the embedding grooves 428. Plug rods 424 are inserted into the inner walls of the embedding grooves 428. One end of the plug rod 424 is inserted into the inner wall of the insertion hole 425. After inserting the connecting column 421 into the connecting column 423, through the embedding grooves 428 formed on the surface of the connecting column 423, the plug rods 424 inserted into the embedding grooves 428 are inserted into the insertion holes 425 formed on the bottom surface of the connecting column 421, which helps to better fix and protect the position of the upper jig plate 5 and prevent it from falling off. The cross-section size of the plug rod 424 is adapted to the cross-section size of the connecting column 423. An engagement groove 422 is formed on the arc surface of the connecting column 421. The arc surface of the engagement groove 422 slidably penetrates through the surface of the rotating frame 426. The position of the rotating frame 426 can be conveniently adjusted by the engagement groove 422. A friction sleeve 427 is fixedly connected to the arc surface of the rotating frame 426. The friction sleeve 427 is a rubber sleeve, and anti-slip lines are formed on the surface of the friction sleeve 427. When rotating the position of the rotating frame 426, the rubber material friction sleeve 427 can be used for convenient operation.

[0047] So far, the embodiments of the present application have been described in detail. To avoid obscuring the concept of the present application, some details well known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed here based on the above description.

[0048] Although some specific embodiments of the present application have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified or equivalent substitutions can be made for some technical features without departing from the scope and spirit of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way.

Claims

1. Hydrogen energy membrane electrode airtight detection tooling, characterized in that Comprising: A tooling base (1), on the upper surface of which an installation frame (2) is mounted; A cylinder (3), which is mounted on the upper surface of the installation frame (2); A lower jig plate (6), which is mounted on the upper surface of the tooling base (1); An adjusting device (4), which includes a limiting component (41) and a protection component (42); the limiting component (41) is arranged on the four peripheral corner surfaces of the lower jig plate (6); and An upper jig plate (5), which is fixedly connected to the output end of the cylinder (3) by means of the protection component (42); air flow holes (51) are provided on the inner walls on both sides of the upper jig plate (5); Among them, the limiting component (41) includes a positioning plate (411), the lower surface of which is fixedly connected to the surface of the lower jig plate (6), a sliding frame (412) is slidably connected to the upper surface of the positioning plate (411), a mosaic frame (417) is fixedly connected to one side of the sliding frame (412), a positioning block (413) is inserted into the inner wall of the mosaic frame (417), and the cross section of the positioning block (413) is in an "L" shape; The protection component (42) includes a connecting column (421), the upper end of which is fixedly connected to the output end of the cylinder (3), a rotating frame (426) is slidably connected to the surface of the connecting column (421), a connecting column (423) is fixedly connected to the position corresponding to the connecting column (421) on the upper surface of the upper jig plate (5), the arc surface of the connecting column (421) is inserted into the inner wall of the connecting column (423), and the inner wall of the rotating frame (426) is threadedly connected to the arc surface of the connecting column (423).

2. The hydrogen energy membrane electrode airtight detection tooling according to claim 1, wherein The air flow hole (51) includes an air inlet hole (511) and an air outlet hole (512), the air inlet hole (511) is provided on the side wall of the upper jig plate (5), and the air outlet hole (512) is provided on the lower surface of the upper jig plate (5).

3. The hydrogen energy membrane electrode airtight detection tooling according to claim 1, characterized in that, The limiting component (41) further includes a rotating plate (415), the upper end of which is rotatably connected to the end of the sliding frame (412) away from the positioning block (413), the cross section of the rotating plate (415) is in an "L" shape, a plurality of clamping grooves (419) are provided on the side wall of the positioning plate (411), the short arm end of the rotating plate (415) is clamped with the inner wall of the clamping groove (419), and coil springs (416) are sleeved on both ends of the inner wall arc surface of the sliding frame (412) close to the rotating plate (415), and the two ends of the coil spring (416) are respectively fixedly connected to the rotating plate (415) and the sliding frame (412).

4. The hydrogen energy membrane electrode airtight detection tooling according to claim 1, wherein A sliding groove (414) is provided on the upper surface of the positioning plate (411), and the inner wall of the sliding groove (414) is slidably connected to the bottom surface of the sliding frame (412).

5. The hydrogen energy membrane electrode airtight detection tooling according to claim 1, wherein Scale plates (418) are fixedly connected to the positions corresponding to the positioning plates (411) on the four peripheral corner surfaces of the lower jig plate (6), and the length dimension of the scale plate (418) is adapted to the length dimension of the positioning plate (411).

6. The hydrogen energy membrane electrode airtight detection tooling according to claim 1, characterized in that The protection component (42) further includes two embedding grooves (428), the two embedding grooves (428) are opened on both side surfaces of the connecting column (423), insertion holes (425) are opened on the bottom surface of the connecting column (421) corresponding to the positions of the embedding grooves (428), insertion rods (424) are inserted into the inner walls of the embedding grooves (428), one end of each insertion rod (424) is inserted into the inner wall of the corresponding insertion hole (425), and the cross-sectional dimension of each insertion rod (424) is adapted to the cross-sectional dimension of the connecting column (423).

7. The hydrogen energy membrane electrode airtight detection tooling according to claim 6, characterized in that, An engagement groove (422) is opened on the arc surface of the engagement column (421), and the arc surface of the engagement groove (422) slidably penetrates through the surface of the rotating frame (426).

8. The hydrogen energy membrane electrode airtight detection tooling according to claim 1, wherein, A friction sleeve (427) is fixedly connected to the arc surface of the rotating frame (426), the friction sleeve (427) is a rubber sleeve, and anti-slip lines are provided on the surface of the friction sleeve (427).

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