Fuel cell composite bipolar plate inspection piece
By designing a fuel cell composite bipolar plate inspection plate, and adopting a rectangular frame structure and limiting protrusions, the problem of loosening of the voltage inspection structure between the bipolar plates was solved, achieving stable connection and convenient replacement, and reducing the production and maintenance costs of enterprises.
Patent Information
- Application Number
- CN202520819883.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-28
- Publication Date
- 2026-05-15
- Estimated Expiration
- 2035-04-28
AI Technical Summary
In existing technologies, the voltage monitoring structure of hydrogen fuel cells is prone to shifting and loosening between the bipolar plates and anode plates of individual cells, which affects the accuracy of the test results and increases operation and maintenance costs.
A fuel cell composite bipolar plate inspection plate is designed. The inspection plate body adopts a rectangular frame structure and is equipped with a support ring, a fixing plate and a connecting plate. The connection stability with the bipolar plate is enhanced by the cooperation of limiting protrusions and blocking protrusions. It is also equipped with inspection pins and pull rings to facilitate installation and replacement.
It improves the connection stability between the inspection plate and the bipolar plate, prevents loosening and displacement, reduces production costs, and facilitates the replacement of the connecting plate, thereby reducing the company's operation and maintenance costs.
Smart Images
Figure CN224247893U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fuel cell technology, specifically to a fuel cell composite bipolar plate inspection plate. Background Technology
[0002] With the increasing global demand for clean energy, hydrogen fuel cells, as a highly efficient and environmentally friendly power source, have broad application prospects. In a hydrogen fuel cell, multiple individual cells are typically connected in series to achieve the required voltage and power output.
[0003] To ensure the performance and safety of hydrogen fuel cells, the operating status of individual cells needs to be monitored in real time. Typically, a voltage monitoring structure is installed between the cathode and anode plates of the bipolar plates between individual cells to detect the voltage. However, in existing technologies, the installation of the voltage monitoring structure between the cathode and anode plates of the bipolar plates between individual cells is prone to misalignment and loosening, affecting the accuracy of the detection results, posing safety hazards, and increasing operation and maintenance costs.
[0004] CN119252984A discloses a voltage monitoring structure, a bipolar plate, and a hydrogen fuel cell, relating to the field of hydrogen fuel cell technology. The voltage monitoring structure includes a body, which is elongated and extends along a first direction. A signal output section is provided at a first end of the body along the first direction, and the signal output section can extend beyond the bipolar plate. At least three limiting sections are spaced apart at a second end of the body away from the first end. The at least three limiting sections have the same or different preset angles with the first direction to ensure that the limiting sections and the second end of the body are confined within the bipolar plate. This invention addresses the problem that in existing technologies, the installation of voltage monitoring structures between the cathode and anode plates of bipolar plates in single-cell batteries is prone to misalignment and loosening. However, in this invention, each bipolar plate requires a monitoring plate, increasing production costs for enterprises. Utility Model Content
[0005] In order to overcome the above-mentioned defects in the prior art, this utility model provides a fuel cell composite bipolar plate inspection plate.
[0006] A fuel cell composite bipolar plate inspection plate includes an inspection plate body, which is a rectangular frame structure. The bipolar plate is provided with an inspection groove for placing the inspection plate. The inspection plate has a support ring inside and a fixing plate on its outer wall. The fixing plate is connected to the bipolar plate through a connecting plate. The bipolar plate has a slot at the corresponding position of the connecting plate.
[0007] Furthermore, the connecting piece includes a first connecting part and a second connecting part. The first connecting part is provided with a blocking protrusion, and the inner wall of the slot is provided with a limiting protrusion. The limiting protrusion limits the blocking protrusion. The second connecting part is an enlarged part located at the tail end of the first connecting part. The second connecting part is inserted into the fixing piece in the vertical direction.
[0008] Furthermore, the inspection plate body has arc-shaped surfaces on both sides of one end of the bipolar plate, and the other end extends out of the bipolar plate and is provided with outwardly extending inspection pins.
[0009] Furthermore, the inspection plate body is also equipped with a pull ring.
[0010] Furthermore, the limiting protrusion has a triangular structure, and the blocking protrusion has an inclined surface on the side near the limiting protrusion.
[0011] Due to the adoption of the above technical solutions, the beneficial technical effects of this utility model are as follows: In this utility model, the inspection plate body is placed in the inspection groove, and the shape of the inspection groove is adapted to the outer contour of the inspection plate body. By setting the connecting piece, the stability of the connection between the inspection plate body and the bipolar plate is enhanced, preventing the inspection plate from loosening and shifting. Moreover, the inspection plate body is easy to insert and remove, and can be used for the inspection of different bipolar plates, reducing the production cost of enterprises. Furthermore, in long-term use, when the connection between the connecting piece and the bipolar plate becomes loose, the connecting piece can be replaced, further reducing the production cost of enterprises. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the installation structure of a fuel cell composite bipolar plate inspection plate according to the present invention;
[0013] Figure 2 This is a front view of a fuel cell composite bipolar plate inspection plate according to the present invention;
[0014] Figure 3 This is a front view of the connecting piece in this utility model;
[0015] Figure 4 This utility model Figure 1 An enlarged schematic diagram of region A in the middle.
[0016] In the figure: 1. Inspection plate body, 2. Inspection groove, 3. Support ring, 4. Fixing plate, 5. Connecting plate, 51. First connecting part, 52. Second connecting part, 53. Blocking protrusion, 54. Inclined surface, 6. Slot, 7. Limiting protrusion, 8. Arc-shaped surface, 9. Inspection pin, 10. Pull ring, 11. Bipolar plate. Detailed Implementation
[0017] To more clearly illustrate the technical solution of this utility model, the following description is made in conjunction with the accompanying drawings. Obviously, the drawings described below are only one embodiment of this utility model. For those skilled in the art, other embodiments can be obtained based on these drawings and embodiments without creative effort, and all of them fall within the protection scope of this utility model.
[0018] according to Figure 1-4 As shown, a fuel cell composite bipolar plate inspection plate includes an inspection plate body 1, which is a rectangular frame structure. The bipolar plate 11 is provided with an inspection groove 2 for placing the inspection plate. The inspection plate is provided with a support ring 3 inside and a fixing piece 4 on the outer wall of the inspection plate. The fixing piece 4 is connected to the bipolar plate 11 through a connecting piece 5. The bipolar plate 11 is provided with a slot 6 at the corresponding position of the connecting piece 5.
[0019] In the above specific technical solution, the inspection plate body 1 is placed in the inspection groove 2. The shape of the inspection groove 2 is adapted to the external contour of the inspection plate body 1. By setting the connecting piece 5, the stability of the connection between the inspection plate body 1 and the bipolar plate 11 is enhanced, preventing the inspection plate from loosening and shifting. Moreover, the inspection plate body 1 is easy to insert and remove, and can be used for the inspection of different bipolar plates 11, reducing the production cost of the enterprise. In addition, when the connection between the connecting piece 5 and the bipolar plate 11 becomes loose during long-term use, the connecting piece 5 can be replaced, further reducing the production cost of the enterprise.
[0020] The connecting piece 5 includes a first connecting part 51 and a second connecting part 52. The first connecting part 51 is provided with a blocking protrusion 53, and the inner wall of the slot 6 is provided with a limiting protrusion 7. The limiting protrusion 7 limits the blocking protrusion 53. The second connecting part 52 is an enlarged part located at the tail end of the first connecting part 51. The second connecting part 52 is inserted into the fixing piece 4 in the vertical direction.
[0021] The limiting protrusion 7 has a triangular structure, and the blocking protrusion 53 has an inclined surface 54 on the side near the limiting protrusion 7.
[0022] In the above specific technical solution, one end of the connecting piece 5 is connected to the fixing piece 4, and the other end is connected to the bipolar plate 11, thereby limiting the inspection piece and preventing it from loosening or shifting. The blocking protrusion 53 improves the stability of the inspection piece installation, and the side of the blocking protrusion 53 near the limiting protrusion 7 has an inclined surface 54, which improves the convenience of insertion and removal.
[0023] The inspection plate body 1 has arc-shaped surfaces 8 on both sides of one end of the bipolar plate 11, and the other end extends out of the bipolar plate 11 and is provided with an outwardly extending inspection needle 9. The arc-shaped surfaces 8 facilitate the insertion of the inspection plate body 1 into the inspection groove 2.
[0024] The inspection plate body 1 is also provided with a pull ring 10 to facilitate pulling out the inspection plate.
[0025] The above embodiments are merely exemplary embodiments of the present utility model and are not intended to limit the present utility model. The scope of protection of the present utility model is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present utility model within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present utility model.
Claims
1. A fuel cell composite bipolar plate inspection plate, comprising an inspection plate body (1), characterized in that, The inspection plate body (1) is a rectangular frame structure. The bipolar plate (11) is provided with an inspection slot (2) for placing the inspection plate. The inspection plate is provided with a support ring (3) inside. The inspection plate is provided with a fixing piece (4) on its outer wall. The fixing piece (4) is connected to the bipolar plate (11) through a connecting piece (5). The bipolar plate (11) is provided with a slot (6) at the corresponding position of the connecting piece (5).
2. The fuel cell composite bipolar plate inspection sheet according to claim 1, characterized in that, The connecting piece (5) includes a first connecting part (51) and a second connecting part (52). The first connecting part (51) is provided with a blocking protrusion (53). The inner wall of the slot (6) is provided with a limiting protrusion (7). The limiting protrusion (7) limits the blocking protrusion (53). The second connecting part (52) is an enlarged part located at the tail end of the first connecting part (51). The second connecting part (52) is inserted into the fixing piece (4) in the vertical direction.
3. The fuel cell composite bipolar plate inspection sheet according to claim 2, characterized in that, The inspection plate body (1) has arc-shaped surfaces (8) on both sides of one end of the bipolar plate (11), and the other end extends out of the bipolar plate (11) and is provided with an outwardly extending inspection needle (9).
4. The fuel cell composite bipolar plate inspection sheet according to claim 3, characterized in that, The inspection plate body (1) is also provided with a pull ring (10).
5. The fuel cell composite bipolar plate inspection sheet according to claim 4, characterized in that, The limiting protrusion (7) has a triangular structure, and the blocking protrusion (53) has an inclined surface (54) on the side near the limiting protrusion (7).