A kind of all-vanadium redox flow battery liquid guide plate aperture detection device

Abstract

The application relates to the technical field of all-vanadium redox flow batteries, and provides a device for detecting the aperture of a liquid guide plate of an all-vanadium redox flow battery, which comprises coaxially arranged first and second cylinders, the end of the first cylinder close to the second cylinder is provided with a first guide part, the end of the second cylinder away from the first cylinder is provided with a second guide part, and the second guide part and the first guide part are fixedly connected through a connecting plate clamped in the second cylinder. Based on the above structure, the second cylinder can penetrate into the to-be-detected liquid guide hole, while the first cylinder cannot penetrate into the second liquid guide hole, so that the aperture of the liquid guide hole of the to-be-detected liquid guide plate is determined to be qualified, the detection structure can be reduced from being influenced by human factors, and the accuracy of the detection result is improved.

Description

Technical Field

[0001] This application relates to the field of vanadium redox flow battery technology, and in particular provides a device for detecting the aperture of the liquid guide plate in a vanadium redox flow battery. Background Technology

[0002] Vanadium redox flow batteries, commonly known as "vanadium batteries," are redox batteries in which the active material is in a circulating liquid state. The pore size of related components of vanadium redox flow batteries is usually tested.

[0003] Taking the liquid guide plate as an example, the liquid guide plate is mainly used to guide and distribute the electrolyte flow at each electrolyte inlet and outlet on the electrode frame in the fuel cell stack. The size of the liquid guide hole on the liquid guide plate will affect the flow resistance and distribution uniformity of the electrolyte.

[0004] However, traditional testing methods are greatly affected by human factors, resulting in poor accuracy of test results. Utility Model Content

[0005] The purpose of this application is to provide a device for detecting the aperture of the liquid guide plate in a vanadium redox flow battery, which aims to solve the problem that the detection results of the liquid guide plate aperture are greatly affected by human factors in the prior art.

[0006] To achieve the above objectives, this application adopts the following technical solution: A device for detecting the aperture of a vanadium redox flow battery liquid guide plate is provided, comprising a first column and a second column arranged coaxially. A first guide portion is abutted at one end of the first column near the second column, and a second guide portion is abutted at one end of the second column away from the first column. The second guide portion and the first guide portion are fixedly connected by a connecting plate snapped into the second column.

[0007] The vanadium redox flow battery liquid guide plate aperture detection device provided in this application uses the fact that the second column can penetrate into the liquid guide hole to be tested, while the first column cannot penetrate into the second liquid guide hole, to determine that the aperture of the liquid guide hole of the liquid guide plate to be tested is qualified. This can reduce the influence of human factors on the detection structure and improve the accuracy of the detection results.

[0008] In some embodiments, the first guide portion is configured as an annular shape arranged coaxially with the first column.

[0009] In some embodiments, the outer diameter of the larger end of the first guide portion is equal to the outer diameter of the first column.

[0010] In some embodiments, the outer diameter of the smaller end of the first guide portion is equal to the outer diameter of the second column.

[0011] In some embodiments, the second guide portion is configured as a frustum shape arranged coaxially with the second column.

[0012] In some embodiments, the outer diameter of the larger end of the second guide portion is equal to the outer diameter of the second column.

[0013] In some embodiments, a slot for engaging the connecting plate is provided on the outer wall of the second column.

[0014] In some embodiments, the slot extends axially along the second column.

[0015] In some embodiments, the slots are arranged at circumferential intervals along the second column.

[0016] In some embodiments, the outer wall of the connecting plate is located below the opening of the card slot. Attached Figure Description

[0017] Exemplary embodiments of this application will now be described in detail with reference to the accompanying drawings. It should be understood that the embodiments described below are for illustrative purposes only and are not intended to limit the scope of this application. In the accompanying drawings: Figure 1 A schematic diagram of the vanadium redox flow battery liquid guide plate aperture detection device provided in the embodiments of this application; Figure 2 A schematic diagram of the second column provided in an embodiment of this application; The following are the labeling elements in the figure: 10. First column; 11. First guide section; 20. Second column; 21. Second guide section; 22. Slot; 23. Connecting plate. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description of this application is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining this application and are not intended to limit this application.

[0019] Vanadium redox flow batteries, commonly known as "vanadium batteries," are redox batteries in which the active material is in a circulating liquid state. The pore size of related components of vanadium redox flow batteries is usually tested.

[0020] Taking the liquid guide plate as an example, the liquid guide plate is mainly used to guide and distribute the electrolyte flow at each electrolyte inlet and outlet on the electrode frame in the fuel cell stack. The size of the liquid guide hole on the liquid guide plate will affect the flow resistance and distribution uniformity of the electrolyte.

[0021] However, traditional testing methods are greatly affected by human factors, resulting in poor accuracy of test results.

[0022] Based on the above considerations, this embodiment provides a device for detecting the aperture of the liquid guide plate in a vanadium redox flow battery, which can solve the problem that the detection results of the liquid guide plate aperture are greatly affected by human factors in the prior art.

[0023] The specific implementation of this application will be described in detail below with reference to specific embodiments.

[0024] Please see Figures 1-2 The embodiments of this application provide a device for detecting the aperture of the liquid guide plate of a vanadium redox flow battery, including a first column 10 and a second column 20 arranged coaxially. The end of the first column 10 near the second column 20 abuts against a first guide portion 11, and the end of the second column 20 away from the first column 10 abuts against a second guide portion 21. The second guide portion 21 and the first guide portion 11 are fixedly connected by a connecting plate 23 snapped into the second column 20.

[0025] The first column 10 refers to the component used to detect whether the diameter of the liquid guiding hole meets the maximum value requirement of the diameter range of qualified products.

[0026] The first column 10 is configured as a cylinder with a smooth outer wall, and the material of the first column 10 may be, but is not limited to, stainless steel.

[0027] If the diameter range of the qualified product is D±0.1mm, then the outer diameter of the first column 10 is configured as D+0.1mm. During testing, if the first column 10 can penetrate the liquid guide hole to be tested, it means that the diameter of the liquid guide hole to be tested does not meet the maximum value requirement of the qualified product's diameter range. That is, the liquid guide hole to be tested is unqualified because the diameter is too large.

[0028] The second column 20 refers to the component used to detect whether the diameter of the liquid guiding hole meets the minimum requirement of the qualified product's diameter range.

[0029] The second column 20 is configured as a cylinder with a smooth outer wall, and the material of the second column 20 may be, but is not limited to, stainless steel.

[0030] The second column 20 and the first column 10 are an integral structure and are arranged coaxially.

[0031] If the diameter range of the qualified product is D±0.1mm, then the outer diameter of the second column 20 is configured as D-0.1mm. During testing, if the second column 20 cannot penetrate the liquid guide hole to be tested, it means that the diameter of the liquid guide hole to be tested does not meet the minimum requirement of the qualified product's diameter range. That is, the liquid guide hole to be tested is unqualified because the diameter is too small.

[0032] The diameter of the liquid guiding hole to be tested can only be deemed qualified if the diameter of the hole allows the second column 20 to pass through, but does not allow the first column 10 to pass through.

[0033] The first guide part 11 and the second guide part 21 are used to ensure that the corresponding first column 10 and second column 20 can be smoothly aligned with the liquid guide hole to be tested.

[0034] The vanadium redox flow battery liquid guide plate aperture detection device provided in this embodiment utilizes the fact that the second column 20 can penetrate into the liquid guide hole to be tested, while the first column 10 cannot penetrate into the second liquid guide hole, to determine that the aperture of the liquid guide hole of the liquid guide plate to be tested is qualified. This can reduce the influence of human factors on the detection structure and improve the accuracy of the detection results.

[0035] Please see Figures 1-2 In some embodiments, the first guide portion 11 is configured as an annular shape arranged coaxially with the first column 10.

[0036] The first guide part 11 abuts against the end of the first column 10 near the second column 20, so as to form a smooth transition between the first column 10 and the second column 20, so that the first column 10 can be smoothly aligned with the liquid guide hole to be tested.

[0037] As an example, the outer diameter of the larger end of the first guide portion 11 is equal to the outer diameter of the first column 10, and the outer diameter of the smaller end of the first guide portion 11 is equal to the outer diameter of the second column 20. The first guide portion 11 makes a smooth transition between the first column 10 and the second column 20.

[0038] It should be noted that the first guide portion 11 is constructed as a right triangle along its cross-section, and the diameter of the inner hole of the first guide portion 11 is equal to the outer diameter of the second column 20.

[0039] Please see Figures 1-2 In some embodiments, the second guide portion 21 is configured as a frustum shape arranged coaxially with the second column 20.

[0040] The second guide portion 21 abuts against the first end of the second column 20 away from the first column 10. The outer diameter of the second guide portion 21 decreases towards one side of the second column 20. The second guide portion 21 is used to guide the second column 20 to be smoothly aligned with the liquid guiding hole of the liquid guiding plate to be tested.

[0041] As an example, the outer diameter of the larger end of the second guide portion 21 is equal to the outer diameter of the second column 20.

[0042] A slot 22 for engaging the connecting plate 23 is provided on the outer wall of the second column 20. The slot 22 extends along the axial direction of the second column 20. The slot 22 is constructed into a rectangle along the cross section. The length of the slot 22 is equal to the length of the second column 20. That is, the slot 22 extends to the connection between the first column 10 and the second column 20.

[0043] As an example, the slots 22 are evenly arranged along the circumference of the second column 20.

[0044] The connecting plate 23 is used to connect the first guide part 11 and the second guide part 21. The connecting plate 23 connects the first guide part 11 and the second guide part 21 into a whole. The shape of the connecting plate 23 is adapted to the slot 22. The connecting plate 23 is snapped into the inside of the slot 22, and the outer wall of the connecting plate 23 is located below the opening of the slot 22 to prevent the second column 20 from being interfered with by extending out of the slot 22.

[0045] The inner wall of the connecting plate 23 is bonded to the bottom of the slot 22, thereby completing the installation and fixing of the first guide part 11 and the second guide part 21.

[0046] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A device for detecting the aperture of the liquid guide plate in a vanadium redox flow battery, characterized in that, It includes a first column and a second column arranged coaxially. The first column has a first guide portion abutting at one end near the second column, and the second column has a second guide portion abutting at one end away from the first column. The second guide portion and the first guide portion are fixedly connected by a connecting plate snapped into the second column.

2. The vanadium redox flow battery guide plate aperture detection device according to claim 1, characterized in that, The first guide portion is configured as a ring arranged coaxially with the first column.

3. The vanadium redox flow battery guide plate aperture detection device according to claim 2, characterized in that, The outer diameter of the larger end of the first guide portion is equal to the outer diameter of the first column.

4. The vanadium redox flow battery guide plate aperture detection device according to claim 3, characterized in that, The outer diameter of the smaller end of the first guide portion is equal to the outer diameter of the second column.

5. The vanadium redox flow battery guide plate aperture detection device according to claim 1, characterized in that, The second guide portion is configured as a frustum shape arranged coaxially with the second column.

6. The vanadium redox flow battery guide plate aperture detection device according to claim 5, characterized in that, The outer diameter of the larger end of the second guide portion is equal to the outer diameter of the second column.

7. The vanadium redox flow battery guide plate aperture detection device according to claim 1, characterized in that, The outer wall of the second column is provided with a slot for engaging the connecting plate.

8. The vanadium redox flow battery guide plate aperture detection device according to claim 7, characterized in that, The slot extends along the axial direction of the second column.

9. The vanadium redox flow battery guide plate aperture detection device according to claim 8, characterized in that, The slots are arranged at intervals along the circumference of the second column.

10. The vanadium redox flow battery guide plate aperture detection device according to claim 9, characterized in that, The outer wall of the connecting plate is located below the opening of the slot.

Images