Auxiliary device and method for preparing solid oxide fuel cell (SOFC) electrolyte ceramic substrate
By using auxiliary devices, uniform spreading of powder in the electrolyte substrate of SOFC fuel cells was achieved, solving the problems of cracking and warping, improving battery performance and sealing effect, and reducing processing costs.
Patent Information
- Application Number
- CN202411168316.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2026-03-03
AI Technical Summary
In the preparation process of SOFC fuel cells, it is difficult to spread the powder evenly in the pressing method, which leads to the electrolyte substrate being prone to cracking, warping and poor sealing effect, affecting battery performance and increasing processing costs.
An auxiliary device is used, including a tableting mold, a brush head, a rotating disk, and a height adjustment component. By adjusting the height of the brush head and the coordination of the rotating disk, the powder can be evenly spread, avoiding cracking and warping, and improving the flatness of the substrate.
It improves the flatness of the electrolyte substrate, avoids cracking and warping, improves the sealing effect, reduces processing costs, and enhances battery performance.
Smart Images
Figure CN121589905A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of fuel cell technology, and more particularly to an auxiliary device and method for preparing an electrolyte ceramic substrate for SOFC fuel cells. Background Technology
[0002] Solid oxide fuel cells (SOFCs), as clean power generation devices, can operate at temperatures ranging from 600 to 1000 degrees Celsius and can also achieve high-temperature reforming of certain fuels (such as CH4). The main manufacturing processes for SOFCs include tableting, spin coating, electrochemical vapor deposition, plasma spraying, dip coating, screen printing, and casting. In the current tableting process, operators need to manually spread the powder evenly using a needle based on experience. However, due to the confined space of the tableting mold, it is difficult to completely evenly distribute the powder using only the operator's experience and visual inspection. The consequence of uneven powder distribution is that the pressed tablets are prone to cracking, warping, and unevenness. Severely cracked and warped tablets are unusable, and even slightly warped tablets may pose sealing risks, reducing battery performance. Therefore, the flatness of the electrolyte substrate is crucial. Summary of the Invention
[0003] To address the aforementioned technical problems, this invention provides an auxiliary device and method for preparing ceramic substrates for SOFC fuel cell electrolytes. The device is used in the pressing and molding process of SOFCs. This invention improves the flatness of the electrolyte substrate, avoids cracking and warping, solves the problems of poor sealing, easy cracking, and high processing costs in SOFCs, and also improves the electrical performance of SOFCs.
[0004] The technical means employed in this invention are as follows:
[0005] An auxiliary device for preparing SOFC fuel cell electrolyte ceramic substrates includes a pressing mold, a brush head, a rotating disk, and a height adjustment component. The pressing mold is used to define the diameter of the substrate to be formed. The pressing mold is filled with a preset amount of powder. The brush head is disposed inside the pressing mold. The bottom of the height adjustment component is connected to the brush head. The height adjustment component is used to adjust the relative height between the bottom of the brush head and the internal space of the pressing mold. The rotating disk is detachably connected to the upper opening of the pressing mold. The height adjustment component is connected to the rotating disk. Rotating the body of the height adjustment component causes the rotating disk to rotate, thereby driving the brush head to rotate.
[0006] Furthermore, the height adjustment component includes a height adjustment component body and a height adjustment knob. The height adjustment knob is installed inside the height adjustment component body, and the bottom of the height adjustment knob is connected to the brush head. The outer wall of the height adjustment component body is provided with a brush head knob for easy rotation.
[0007] Furthermore, the height adjustment component is provided with a height marking scale to indicate the distance the height adjustment knob has moved up or down.
[0008] Furthermore, the rotating disk includes a rotating disk body, a bearing, and a T-ring. The rotating disk body has a groove at its center, and the bearing is embedded in the groove. The bottom of the T-ring is mounted inside the rotating disk body via the bearing. The T-ring has threads inside it to cooperate with a height adjustment component.
[0009] Furthermore, the bottom of the rotating disk body is provided with an inverted trapezoidal positioning pin, which engages with the upper opening end of the tableting mold.
[0010] Furthermore, the brush head includes a brush head body and a brush head that is directly in contact with the powder and is located at the bottom of the brush head body. The brush head body has a thread that matches the height adjustment component. The center point of the brush head has two opposing semi-circular arcs at its two endpoints in the diameter direction. The brush head is divided into two parts by the two complete arcs, and the surfaces of the two parts facing the powder have a preset gradient thickness.
[0011] The present invention also discloses a tablet compression method based on the above-mentioned auxiliary device, comprising the following steps:
[0012] The height of the brush head can be adjusted by rotating the height adjustment knob on the height adjustment piece to accommodate powders of different weights.
[0013] After adjusting the height, load the preset amount of powder into the tableting mold;
[0014] Rotate the main body of the height adjustment component to make the rotating disk rotate, which in turn drives the brush head to rotate, so that the brush head can evenly spread the powder in the mold.
[0015] Remove the main body of the device and place it in the tablet press to compress the powder into tablets.
[0016] Compared with the prior art, the present invention has the following advantages: The height of the brush head of the present invention is adjustable, and the thickness of the powder can be precisely adjusted according to the design requirements. Through the set brush head, the powder can be effectively spread flat, improving the flatness of the electrolyte substrate and avoiding cracking and warping. It solves the problems of poor sealing effect, easy cracking and high processing cost in SOFC. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is an exploded view of the structure of the present invention.
[0019] Figure 2 This is a schematic diagram of the height adjustment component of the present invention.
[0020] Figure 3 This is a schematic diagram of the rotating disk structure of the present invention.
[0021] Figure 4 This is a schematic diagram of the brush head structure of the present invention.
[0022] Figure 5 This is a cross-sectional view of the assembled device of the present invention.
[0023] In the diagram: 1. Height adjustment component; 2. Rotary disc; 3. Brush head; 4. Tableting mold; 11. Height adjustment knob; 12. Brush head knob; 13. Height marking scale; 14. Thread; 15. Rotating shaft; 21. T-ring; 22. Bearing; 23. Rotary disc body; 24. Positioning pin; 31. Brush head body; 32. Brush head. Detailed Implementation
[0024] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0026] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0027] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values of the components and steps described in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.
[0028] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.
[0029] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.
[0030] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.
[0031] like Figures 1-5 As shown in the figure, an auxiliary device for preparing SOFC fuel cell electrolyte ceramic substrates is disclosed in this embodiment of the invention. The device includes a pressing mold 4, a brush head 3, a rotating disk 2, and a height adjusting component 1. The pressing mold is used to limit the diameter of the substrate to be formed. The pressing mold is filled with a preset amount of powder. The brush head is disposed inside the pressing mold. The bottom of the height adjusting component is connected to the brush head. The height adjusting component is used to adjust the relative height between the bottom of the brush head and the internal space of the pressing mold. The rotating disk is detachably connected to the upper opening of the pressing mold. The height adjusting component is connected to the rotating disk through a thread 14. Rotating the body of the height adjusting component causes the rotating disk to rotate, which in turn drives the brush head to rotate.
[0032] The height adjustment component includes a height adjustment body and a height adjustment knob 11. The height adjustment knob is installed inside the height adjustment body. The bottom of the height adjustment knob, i.e., the thread of the rotating shaft 15, is connected to the brush head. The outer wall of the height adjustment body is provided with a brush head knob 12 for easy rotation. By rotating the brush head knob, the rotating shaft is rotated, thereby driving the brush head to rotate.
[0033] The height adjustment component is equipped with a height marking ruler 13, which is used to mark the distance of the height adjustment knob to raise and lower, so as to adjust the required brush head height according to different weights of powder.
[0034] The rotating disk includes a rotating disk body 23, a bearing 22, and a T-ring 21. The center of the rotating disk body is provided with a groove, and the bearing is embedded in the groove. The bottom of the T-ring is installed inside the rotating disk body through the bearing. The inside of the T-ring is provided with threads to cooperate with the height adjustment component.
[0035] The bottom of the rotating disk body is provided with an inverted trapezoidal positioning pin 24. The positioning pin cooperates with the upper opening end of the tableting mold, so that the height adjustment component can be positioned at the center of the tableting mold.
[0036] The brush head includes a brush head body 31 and a brush head 32 located at the bottom of the brush head body that directly contacts the powder. In this embodiment, the brush head can be regarded as a "Tai Chi" shape. The brush head body has threads that match the height adjustment component. The center point of the brush head has opposing semi-circular arcs at both ends in the diameter direction. The brush head is divided into two parts by two complete arcs, and the surfaces of the two parts facing the powder have a preset gradient thickness.
[0037] The present invention also discloses a tablet compression method based on the above-mentioned auxiliary device, comprising the following steps:
[0038] The height of the brush head can be adjusted by rotating the height adjustment knob on the height adjustment piece to accommodate powders of different weights.
[0039] After adjusting the height, load the preset amount of powder into the tableting mold;
[0040] Rotating the height adjustment mechanism causes the rotating disc to rotate, which in turn drives the brush head to rotate, allowing the brush head to evenly spread the powder in the mold. When the brush head knob is rotated, the brush head can rotate horizontally to evenly spread the powder in the tableting mold.
[0041] Remove the main body of the device and place it in the tablet press to compress the powder into tablets.
[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. An auxiliary device for preparing a ceramic substrate for SOFC fuel cell electrolyte, characterized in that, The device includes a tableting mold, a brush head, a rotating disk, and a height adjustment component. The tableting mold is used to define the diameter of the substrate to be formed. The tableting mold is filled with a preset amount of powder. The brush head is disposed inside the tableting mold. The bottom of the height adjustment component is connected to the brush head. The height adjustment component is used to adjust the relative height between the bottom of the brush head and the internal space of the tableting mold. The rotating disk is detachably connected to the upper opening of the tableting mold. The height adjustment component is connected to the rotating disk. Rotating the body of the height adjustment component causes the rotating disk to rotate, which in turn drives the brush head to rotate.
2. The auxiliary device for preparing SOFC fuel cell electrolyte ceramic substrate according to claim 1, characterized in that, The height adjustment component includes a height adjustment component body and a height adjustment knob. The height adjustment knob is installed inside the height adjustment component body, and the bottom of the height adjustment knob is connected to the brush head. The outer wall of the height adjustment component body is provided with a brush head knob for easy rotation.
3. The auxiliary device for preparing SOFC fuel cell electrolyte ceramic substrates according to claim 2, characterized in that, The height adjustment component is equipped with a height marking scale to indicate the distance the height adjustment knob can be raised or lowered.
4. The auxiliary device for preparing SOFC fuel cell electrolyte ceramic substrate according to claim 1, characterized in that, The rotating disk includes a rotating disk body, a bearing, and a T-ring. The rotating disk body has a groove in its center, and the bearing is embedded in the groove. The bottom of the T-ring is installed inside the rotating disk body through the bearing. The T-ring has threads inside it to cooperate with a height adjustment component.
5. The auxiliary device for preparing SOFC fuel cell electrolyte ceramic substrates according to claim 4, characterized in that, The bottom of the rotating disk body is provided with an inverted trapezoidal positioning pin, which cooperates with the upper opening end of the tableting mold.
6. The auxiliary device for preparing SOFC fuel cell electrolyte ceramic substrate according to claim 1, characterized in that, The brush head includes a brush head body and a brush head that is located at the bottom of the brush head body and directly contacts the powder. The brush head body has a threaded part that matches the height adjustment component. The center point of the brush head has two opposing semi-circular arcs at its two endpoints in the diameter direction. The brush head is divided into two parts by the two complete arcs, and the surfaces of the two parts facing the powder have a preset gradient thickness.
7. A tablet compression method based on the auxiliary device according to any one of claims 1 to 6, characterized in that, Includes the following steps: The height of the brush head can be adjusted by rotating the height adjustment knob on the height adjustment piece to accommodate powders of different weights. After adjusting the height, load the preset amount of powder into the tableting mold; Rotate the main body of the height adjustment component to make the rotating disk rotate, which in turn drives the brush head to rotate, so that the brush head can evenly spread the powder in the mold. Remove the main body of the device and place it in the tablet press to compress the powder into tablets.