Tool testing fixture for rapidly detecting critical dimension of solid oxide fuel cell stack

Abstract

The utility model relates to a tool testing fixture for rapidly detecting the critical dimension of a solid oxide fuel cell stack, which comprises a flat plate, a pin column body and a positioning column body, the flat plate is provided with a first bolt hole and a second bolt hole, and the pin column body penetrates through the first bolt hole and is matched with a cell stack positioning hole. The positioning column body penetrates through the second bolt hole and is matched with the cell stack air hole, and the pin column body penetrates through the first bolt hole and is matched with the cell stack positioning hole, so that the accuracy of the size and position of the cell stack positioning hole can be quickly and accurately verified; the positioning column body penetrates through the second bolt hole to be matched with the cell stack air hole, accurate measurement and verification of the diameter size of the cell stack air hole are achieved, manual measurement is not needed, the measurement efficiency and the measurement accuracy are improved, and the manufacturing cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of solid oxide fuel cells, in particular to a tooling inspection tool for rapidly detecting key dimensions of a solid oxide fuel cell stack. Background Art

[0002] Solid oxide fuel cells (SOFCs), a shining jewel in the field of new energy technology, demonstrate immense application potential and immeasurable value in cutting-edge fields such as distributed power generation, combined heat and power, and fuel cell vehicles, thanks to their exceptional energy conversion efficiency and remarkable environmental performance. To further enhance power density and operating efficiency, modern technology is leading the way in meticulously assembling multiple SOFC cells into highly integrated cell stacks. Market manufacturers have proposed that each cell stack is first tightly connected to a dedicated gas distribution plate to form a cell stack. Multiple cell stacks are then connected in series or parallel using precise locating pins, sharing a unified gas supply and exhaust gas flow path. In this layout, ensuring seamless and precise docking between cell stacks—particularly critical elements such as the dimensional accuracy and alignment of the locating holes, as well as the coaxiality of the gas transmission channels—are crucial for maintaining the efficient and stable operation of the entire system.

[0003] The SOFC stack is the heart of the entire system, and its processing and assembly quality is directly linked to the system's performance stability and long-term service life. Ensuring the accuracy of critical dimensions such as the stack's positioning holes, gas inlet, and exhaust outlet is fundamental to ensuring unobstructed gas flow, uniform heat distribution, minimizing thermal stress concentration, and preventing potential problems such as gas leakage and thermal runaway. Therefore, unprecedented standards for accuracy, repeatability, and ease of use are imposed on inspection tools.

[0004] However, traditional manual measurement methods are insufficient for high-precision inspection tasks such as SOFC stacks. Manual operation is not only inefficient but also prone to fluctuations in measurement results due to factors such as visual errors, physical fatigue, and differences in operating habits, which in turn affects product quality control. In an industrial environment that strives for efficient production and strict quality control, this reliance on manual inspection methods undoubtedly increases production cycle time, increases manufacturing costs, and may become a bottleneck restricting capacity expansion. Utility Model Content

[0005] The purpose of the utility model is to design a tooling inspection fixture for quickly detecting key dimensions of a solid oxide fuel cell stack, so as to solve the technical problems of low manual measurement efficiency, inaccurate measurement and high manufacturing cost proposed in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a tooling inspection fixture for quickly detecting the key dimensions of a solid oxide fuel cell stack, comprising a flat plate, a pin body and a positioning column body, the flat plate being provided with a first bolt hole and a second bolt hole, the pin body passing through the first bolt hole and matching the positioning hole of the battery stack, the positioning column body passing through the second bolt hole and matching the air hole of the battery stack.

[0007] Furthermore, the pin body includes a first pin threaded section and a first pin optical axis section arranged from top to bottom, the first pin threaded section matches the first bolt hole, and the first pin optical axis section matches the battery stack positioning hole.

[0008] The positioning column body includes a first positioning column threaded section and a first positioning column optical axis section arranged from top to bottom. The first positioning column threaded section matches the second bolt hole, and the first positioning column optical axis section matches the battery stack air hole.

[0009] Furthermore, the optical axis section of the first positioning column includes a cone and a straight axis section arranged from top to bottom, and the maximum diameter of the cone is greater than the diameter of the straight axis section.

[0010] Furthermore, the pin body further includes a first pin section segment, and the first pin section segment is arranged on the top of the first pin thread segment;

[0011] The positioning column body further includes a first positioning column section segment, and the first positioning column section segment is arranged between the first positioning column thread segment and the first positioning column optical axis segment.

[0012] Furthermore, the pin body includes a second pin optical axis section and a second pin thread section arranged from top to bottom, the second pin optical axis section matches the battery stack positioning hole, and the second pin thread section matches the first bolt hole;

[0013] The positioning column body includes a second positioning column optical axis section and a second positioning column threaded section arranged from top to bottom. The second positioning column optical axis section matches the battery stack air hole, and the second positioning column threaded section matches the second bolt hole.

[0014] Furthermore, the pin body further includes a second pin section segment, and the second pin section segment is arranged between the second pin optical axis segment and the second pin thread segment;

[0015] A hexagonal countersunk head is provided on the top end surface of the optical axis section of the second positioning column.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention can quickly and accurately verify the accuracy of the size and position of the battery stack positioning hole by having the pin body pass through the first bolt hole and match it with the battery stack positioning hole; the positioning column body passes through the second bolt hole and matches it with the battery stack air hole, thereby achieving accurate measurement and verification of the diameter size of the battery stack air hole, without the need for manual measurement, thereby improving measurement efficiency and accuracy and reducing manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of the first embodiment of the present utility model;

[0018] Figure 2 This is an exploded view of the first embodiment of the present utility model;

[0019] Figure 3 This is a schematic structural diagram of the pin body of the first embodiment of the present utility model;

[0020] Figure 4 This is a schematic structural diagram of the positioning column body according to the first embodiment of the present utility model;

[0021] Figure 5 This is a schematic structural diagram of the second embodiment of the present utility model;

[0022] Figure 6 This is an exploded view of the second embodiment of the present utility model;

[0023] Figure 7 This is a schematic structural diagram of the pin body of the second embodiment of the present utility model;

[0024] Figure 8 This is a structural diagram of the positioning column body of the second embodiment of the present utility model;

[0025] The names of the components marked in the figure are as follows: 1. Flat plate; 2. Pin body; 211. First pin threaded section; 212. First pin optical axis section; 213. First pin cross-sectional section; 221. Second pin optical axis section; 222. Second pin threaded section; 223. Second pin cross-sectional section; 3. Positioning column body; 311. First positioning column threaded section; 312. First positioning column optical axis section; 312a. Cone; 312b. Straight axis section; 313. First positioning column cross-sectional section; 321. Second positioning column optical axis section; 322. Second positioning column threaded section; 4. First bolt hole; 5. Second bolt hole; 6. Hexagonal countersunk head; 7. Battery stack positioning hole; 8. Battery stack air hole. DETAILED DESCRIPTION

[0026] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the following is a detailed description of the specific implementation method, structure, characteristics and effects of the present invention in combination with the accompanying drawings and preferred embodiments.

[0027] Please refer to Figure 1-2 , a tooling inspection tool for quickly detecting key dimensions of a solid oxide fuel cell stack, comprising a flat plate 1, a pin body 2 and a positioning column body 3. The flat plate 1 is provided with a first bolt hole 4 and a second bolt hole 5. The first bolt hole 4 matches the battery stack positioning hole 7 and is designed according to the position and size of the battery stack positioning hole 7; the second bolt hole 5 matches the battery stack air hole 8 and is designed according to the position and size of the battery stack air hole 8; the pin body 2 passes through the first bolt hole 4 and matches the battery stack positioning hole 7. If the pin body 2 cannot be inserted into the battery stack positioning hole 7, it means that the battery stack positioning hole 7 does not meet the standard. On the contrary, if the pin body 2 can be inserted into the battery stack positioning hole 7, it means that the battery stack positioning hole 7 has met the standard. This process not only detects the size of the battery stack positioning hole 7, but also verifies its coaxiality; similarly, the positioning column body 3 passes through the second bolt hole 5 and matches the battery stack air hole 8. If the positioning column body 3 cannot be inserted into the battery stack air hole 8, indicating that the battery stack air hole 8 does not meet the standard; on the contrary, if the positioning column body 3 can be inserted into the battery stack air hole 8, it means that the battery stack air hole 8 has met the standard. This process not only detects the size of the battery stack air hole 8, but also verifies its coaxiality. Under normal circumstances, there are two battery stack positioning holes 7 and two battery stack air holes 8 respectively, one of which is the gas inlet and the other is the exhaust gas outlet. The first bolt hole 4 and the pin body 2 correspond to the battery stack positioning hole 7 one-to-one, and the second bolt hole 5 and the positioning column body 3 correspond to the battery stack air hole 8 one-to-one. The gas inlet, exhaust gas outlet and the two battery stack positioning holes 7 can be detected at the same time, which effectively improves the detection efficiency. The above measurement process only requires manual fine-tuning of the pin body 2 and the positioning column body 3, and does not require the use of measuring tools such as vernier calipers for manual measurement, which greatly improves the measurement efficiency and accuracy, can shorten the production cycle, and thus reduce the manufacturing cost.

[0028] Example 1

[0029] Please refer to Figure 1-4The pin body 2 includes a first pin threaded section 211 and a first pin optical axis section 212 arranged from top to bottom. The first pin threaded section 211 matches the first bolt hole 4, so that the first pin threaded section 211 is threadedly connected to the flat plate 1, and its rotation can be adjusted to ensure the coaxiality between the first bolt hole 4 and the pin body 2, thereby improving the measurement accuracy; the first pin optical axis section 212 matches the standard battery stack positioning hole 7, and the first pin optical axis section 212 is inserted into the battery stack positioning hole 7 from the top to detect whether the size of the battery stack positioning hole 7 meets the standard; by rotating the first pin threaded section 211, the depth of the first pin optical axis section 212 inserted into the battery stack positioning hole 7 can be adjusted to meet different detection requirements; the diameter of the first pin optical axis section 212 is smaller than the diameter of the first bolt hole 4, so that the first pin optical axis section 212 can pass through the first bolt hole 4 and be inserted into the battery stack positioning hole 7. The positioning column body 3 includes a first positioning column threaded section 311 and a first positioning column optical axis section 312 arranged from top to bottom. The first positioning column threaded section 311 matches the second bolt hole 5, so that the first positioning column threaded section 311 is threadedly connected to the flat plate 1, and its rotation can be adjusted to ensure the coaxiality between the second bolt hole 5 and the positioning column body 3, further improving the measurement accuracy; the first positioning column optical axis section 312 matches the standard battery stack air hole 8, and the first positioning column optical axis section 312 is inserted into the battery stack air hole 8 from the top to detect whether the size of the battery stack air hole 8 meets the standard.

[0030] The first positioning column optical axis section 312 includes a cone 312a and a straight axis section 312b arranged from top to bottom. The maximum diameter of the cone 312a is larger than the diameter of the straight axis section 312b. The maximum diameter of the cone 312a matches the maximum diameter of the air inlet and outlet of the battery stack. By rotating the first positioning column optical axis section 312, the depth of its insertion into the battery stack air hole 8 can be adjusted, thereby realizing accurate measurement and verification of the size of the battery stack air hole 8.

[0031] The pin body 2 also includes a first pin section 213, which is located at the top of the first pin threaded section 211. The positioning column body 3 also includes a first positioning column section 313, which is located between the first positioning column threaded section 311 and the first positioning column optical axis section 312. The first pin section 213 and the first positioning column section 313 are platform structures formed by cutting in a direction parallel to the axis of the column. This section is parallel to the axis, making it easy to tighten the pin body 2 or positioning column body 3 to the plate 1 using a tool such as a wrench, ensuring a secure connection with the plate 1.

[0032] In this embodiment, the flat plate 1 is placed on the top of the battery stack, and the battery stack positioning holes 7 and the battery stack air holes 8 are inspected from the top.

[0033] Example 2

[0034] Please refer to Figure 5-8 The pin body 2 includes a second pin optical axis section 221 and a second pin threaded section 222 arranged from top to bottom. The second pin optical axis section 221 matches the battery stack positioning hole 7. The second pin optical axis section 221 is inserted into the battery stack positioning hole 7 from the bottom to detect whether the size of the battery stack positioning hole 7 meets the standard; the second pin threaded section 222 matches the first bolt hole 4, so that the second pin threaded section 222 is threadedly connected to the flat plate 1, and its rotation can be adjusted to ensure the coaxiality between the first bolt hole 4 and the pin body 2, thereby improving the measurement accuracy; by rotating the second pin threaded section 222, the depth of the second pin optical axis section 221 inserted into the battery stack positioning hole 7 can be adjusted to meet different detection requirements. The positioning column body 3 includes a second positioning column optical axis section 321 and a second positioning column threaded section 322 arranged from top to bottom. The second positioning column optical axis section 321 matches the battery stack air hole 8. The second positioning column optical axis section 321 is inserted into the battery stack air hole 8 from the bottom to detect whether the size of the battery stack air hole 8 meets the standard; the second positioning column threaded section 322 matches the second bolt hole 5, so that the second positioning column threaded section 322 is threadedly connected to the flat plate 1, and its rotation can be adjusted to ensure the coaxiality between the second bolt hole 5 and the positioning column body 3, thereby further improving the measurement accuracy.

[0035] The pin body 2 also includes a second pin section segment 223, which is arranged between the second pin optical axis segment 221 and the second pin threaded segment 222; the second pin section segment 223 is a platform structure formed by cutting in a direction parallel to the axis on the column, and the section is parallel to the axis, which can facilitate the use of tools such as wrenches to tighten the pin body 2 on the flat plate 1 to ensure a firm connection with the flat plate 1; this embodiment does not require an additional platform structure on the positioning column body 3, thereby shortening the length of the positioning column body 3, and the top end face of the second positioning column optical axis segment 321 is provided with a hexagonal countersunk head 6, which can also be conveniently tightened from top to bottom using tools; the section can be processed at one end of the second pin optical axis segment 221 close to the second pin threaded segment 222, without the need to additionally extend the length of the pin body 2, and also shortens the length of the pin body 2.

[0036] In this embodiment, the flat plate 1 is placed at the bottom of the battery stack, and the battery stack positioning holes 7 and the battery stack air holes 8 are inspected from the bottom.

[0037] The working principle of the present invention is as follows: during detection, the pin body 2 and the positioning column body 3 are installed on the flat plate 1; the flat plate 1 is placed at the corresponding position of the battery stack, and the pin body 2 is fine-tuned to align it with the battery stack positioning hole 7. This process not only detects the size of the battery stack positioning hole 7, but also verifies its coaxiality; the pin body 2 is rotated to adjust the depth of its insertion into the battery stack positioning hole 7 to meet different detection requirements; the positioning column body 3 is adjusted to align it with the battery stack air hole 8. This process not only detects the size of the battery stack air hole 8, but also verifies its coaxiality; the above-mentioned detection process can quickly and accurately verify the accuracy of the size and position of the battery stack positioning hole 7, without the need for manual measurement, thereby improving the measurement efficiency and accuracy and reducing the manufacturing cost.

[0038] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A tooling inspection device for rapid detection of key dimensions of a solid oxide fuel cell stack, characterized by: The invention comprises a flat plate (1), a pin column body (2) and a positioning column body (3); the flat plate (1) is provided with a first bolt hole (4) and a second bolt hole (5); the pin column body (2) passes through the first bolt hole (4) and matches the battery stack positioning hole (7); the positioning column body (3) passes through the second bolt hole (5) and matches the battery stack air hole (8).

2. The tooling inspection tool for rapid detection of key dimensions of a solid oxide fuel cell stack according to claim 1, characterized in that: The pin body (2) comprises a first pin thread section (211) and a first pin optical axis section (212) arranged from top to bottom, the first pin thread section (211) and the first bolt hole (4) are matched with each other, and the first pin optical axis section (212) and the battery stack positioning hole (7) are matched with each other; The positioning column body (3) comprises a first positioning column threaded section (311) and a first positioning column optical axis section (312) arranged from top to bottom, the first positioning column threaded section (311) and the second bolt hole (5) match each other, and the first positioning column optical axis section (312) and the battery stack air hole (8) match each other.

3. The tooling for rapid detection of critical dimensions of a solid oxide fuel cell stack according to claim 2, characterized in that: The first positioning column optical axis section (312) comprises a cone (312a) and a straight axis section (312b) arranged from top to bottom, and the maximum diameter of the cone (312a) is greater than the diameter of the straight axis section (312b).

4. The tooling inspection tool for rapid detection of critical dimensions of a solid oxide fuel cell stack according to claim 2, characterized in that: The pin body (2) further comprises a first pin section segment (213), wherein the first pin section segment (213) is arranged on the top of the first pin thread segment (211); The positioning column body (3) further comprises a first positioning column section (313), wherein the first positioning column section (313) is arranged between the first positioning column thread section (311) and the first positioning column optical axis section (312).

5. The tooling inspection tool for rapid detection of key dimensions of a solid oxide fuel cell stack according to claim 1, characterized in that: The pin body (2) comprises a second pin optical axis section (221) and a second pin thread section (222) arranged from top to bottom, the second pin optical axis section (221) matches the battery stack positioning hole (7), and the second pin thread section (222) matches the first bolt hole (4); The positioning column body (3) comprises a second positioning column optical axis section (321) and a second positioning column threaded section (322) arranged from top to bottom, the second positioning column optical axis section (321) matches the battery stack air hole (8), and the second positioning column threaded section (322) matches the second bolt hole (5).

6. The tooling inspection tool for rapid detection of critical dimensions of a solid oxide fuel cell stack according to claim 5, characterized in that: The pin body (2) further comprises a second pin section segment (223), the second pin section segment (223) being arranged between the second pin optical axis segment (221) and the second pin thread segment (222); and a hexagonal countersunk head (6) is provided on the top end surface of the second positioning column optical axis segment (321).

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