Roll press molding device for activated carbon for super capacitor electrode

Abstract

The utility model discloses a kind of active carbon roll forming devices for supercapacitor electrode, belong to capacitor production technical field.A kind of active carbon roll forming device for supercapacitor electrode, including rack, lower press roll, upper press roll, lower press roll and upper press roll are all set on rack, left frame, driving mechanism, right frame are set on the rack;Scraping mechanism is provided on the rack, and the scraping mechanism includes scraper, tool rest, mounting seat, support frame, power mechanism, and the scraper is set on tool rest;Tool rest is connected with mounting seat, and mounting seat is movably connected with support frame.The utility model provides a kind of active carbon roll forming device for supercapacitor electrode, and lower press roll, upper press roll keep the neatness of outer surface, so that the pressure given by lower press roll, upper press roll to active carbon electrode sheet extrusion is same, and the active carbon electrode sheet after extrusion is flat, and there will not be the condition of pit, protrusion on it.

Description

Technical Field

[0001] This utility model belongs to the field of capacitor production technology, specifically relating to a roll forming device for activated carbon used in supercapacitor electrodes. Background Technology

[0002] Supercapacitors (also known as electrochemical capacitors) use activated carbon electrode sheets as the mainstream material, mainly because their unique physicochemical properties are highly compatible with the energy storage mechanism of supercapacitors.

[0003] During the production of activated carbon electrode sheets: the slurry is evenly coated onto the current collector (aluminum foil or copper foil), and then the solvent is removed by passing it through an 80-120℃ oven to prevent the electrode sheets from cracking. After drying, the dried electrodes are compacted by a roller press to increase the electrode density.

[0004] However, during the electrode pressing process, although the rollers in the roller press can compact the electrode sheet, some raw material powder still adheres to the outer wall of the roller during extrusion. The accumulation of raw material powder on the roller causes the outer surface of the roller to be rough. Furthermore, uneven pressure applied to different parts of the electrode sheet during pressing results in an uneven outer surface of the produced electrode sheet. Therefore, this application proposes a roller pressing device for activated carbon used in supercapacitor electrodes. Utility Model Content

[0005] The purpose of this invention is to provide a roll forming device for activated carbon used in supercapacitor electrodes, in order to solve the problem mentioned in the background art where, during the process of pressing the electrode sheet with rollers in the roll press, the raw material powder adheres to the outer wall of the rollers during the extrusion process, resulting in an uneven outer surface of the produced electrode sheet.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a roll forming device for activated carbon for supercapacitor electrodes, comprising a frame, a lower pressure roller, and an upper pressure roller, wherein the lower pressure roller and the upper pressure roller are both mounted on the frame, and the frame is provided with a left frame, a drive mechanism, and a right frame.

[0007] The frame is equipped with a scraping mechanism, which includes a scraper, a blade holder, a mounting base, a support frame, and a power mechanism. The scraper is mounted on the blade holder.

[0008] The tool holder is connected to the mounting base, the mounting base is movably connected to the support frame, and the support frame is located on the upper side of the machine frame. The tool holder is movably connected to one end of the power mechanism, and the other end of the power mechanism is movably connected to the machine frame.

[0009] The scraping mechanism includes a lower scraping mechanism and an upper scraping mechanism. The lower scraping mechanism is aligned with the lower pressure roller and the internal scraper is located on the lower side of the lower pressure roller. The upper scraping mechanism is aligned with the upper pressure roller and the internal scraper is located on the upper side of the upper pressure roller.

[0010] Preferably, the drive mechanism includes a drive motor, a reducer, and a gear set, with the drive motor connected to the reducer.

[0011] Preferably, the gear set includes a first gear, a second gear, a third gear, and a fourth gear.

[0012] Preferably, a first gear is installed at the output end of the reducer, the first gear is connected to a second gear through gear meshing, the second gear is connected to a third gear through gear meshing, and the third gear is connected to a fourth gear through gear meshing.

[0013] Preferably, the frame is also provided with a right support and a telescopic mechanism, the left frame is mounted on one side of the frame, and the drive mechanism is used to drive the lower pressure roller and the upper pressure roller to rotate.

[0014] Preferably, the right support is located on the side of the frame away from the left frame, the right frame is movably connected to the right support, the right frame is movably connected to the telescopic mechanism, and the other end of the telescopic mechanism is movably connected to the frame.

[0015] Preferably, the telescopic mechanism can be one of a hydraulic telescopic rod or an electric telescopic rod.

[0016] Preferably, there are two lower pressure rollers and one upper pressure roller, with the upper pressure roller located between the two lower pressure rollers.

[0017] Preferably, there are two blade holders, and the two blade holders are located on both sides of the scraper.

[0018] Preferably, the upper scraping mechanism is provided with a mounting frame on its upper side, which is connected to the machine frame. The lower scraping mechanism is provided with a base plate, square tubes, sliders, and guide rails on its lower side. Several square tubes are provided on the lower side of the base plate and are mounted on the machine frame. The sliders are located on the lower side of the base plate. There are two sliders, and the two sliders are located on the two sides of the base plate respectively. The sliders are movably connected to the guide rails, and the two guide rails are laid parallel to each other on the machine frame.

[0019] Beneficial effects:

[0020] This utility model provides a roll forming device for activated carbon used in supercapacitor electrodes. Multiple scraping mechanisms are installed on the frame. When the power mechanism is activated, it pulls the blade holder to rotate around the mounting base, causing the blade holder and mounting base to rotate around the support frame. The scraper is inserted into the blade holder. The distance between the scraper and the lower or upper pressure roller can be adjusted as needed. The scraper can remove the raw material powder adhering to the lower or upper pressure roller, keeping the outer surface of the lower and upper pressure rollers clean. This ensures that the pressure applied to the activated carbon electrode sheet is uniform throughout when the lower and upper pressure rollers compress it, resulting in a flat activated carbon electrode sheet without pits or protrusions. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the roll forming device for activated carbon used in supercapacitor electrodes in this utility model.

[0022] Figure 2 This is a side view of the roll forming device for activated carbon used in supercapacitor electrodes according to this utility model;

[0023] Figure 3 This is a left view of the roll forming device for activated carbon used in supercapacitor electrodes according to this utility model;

[0024] Figure 4 This is a schematic diagram of the internal structure of the roll forming device for activated carbon used in supercapacitor electrodes in this utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Frame; 2. Left frame; 3. Drive mechanism; 4. Right frame; 5. Right support; 6. Telescopic mechanism; 7. Lower pressure roller; 8. Upper pressure roller; 9. Scraper mechanism; 901. Scraper; 902. Scraper holder; 903. Mounting base; 904. Support frame; 905. Power mechanism; 10. Base plate; 11. Square tube; 12. Slider; 13. Guide rail. Detailed Implementation

[0027] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0028] like Figures 1-4 As shown in the figure, this utility model provides a roll forming device for activated carbon used in supercapacitor electrodes, including a frame 1, a lower pressure roller 7, and an upper pressure roller 8, both of which are mounted on the frame 1. Activated carbon electrodes are widely used in supercapacitors, water treatment, batteries, and other fields due to their high specific surface area, low cost, and mature preparation process. The preparation steps of activated carbon are as follows:

[0029] (1) Slurry preparation (wet roller pressing): Raw material mixing: activated carbon (high specific surface area, such as 2000-3000 m²) 2 The slurry is composed of a carbon black (e.g., carbon black, graphene, 5-10%) as the main material. Conductive agents (e.g., carbon black, graphene, 5-10%) enhance conductivity. Binders (e.g., PVDF, PTFE, 5-10%) provide mechanical strength. Solvents (e.g., NMP for PVDF, or ethanol / water for PTFE) adjust the slurry viscosity. Homogenization: The slurry is uniformly dispersed using a planetary mixer or ultrasonic treatment.

[0030] (2) Coating and Drying: Coating: Apply the slurry evenly to the current collector (aluminum foil or copper foil), controlling the thickness (usually 100-200μm). Drying: Use an oven at 80-120℃ to remove the solvent and prevent cracking.

[0031] (3) Roller Compaction: Double roller press (pressure 10-50MPa). Process: The dried electrodes are compacted by the roller press to increase the electrode density (usually 1.0-1.5g / cm³). 3 Multi-pass rolling: Gradually reduce the gap to avoid excessive compression that could lead to a decrease in porosity.

[0032] In order to install the lower pressure roller 7 and the upper pressure roller 8 onto the frame 1, a left frame 2, a drive mechanism 3, a right frame 4, a right support 5, and a telescopic mechanism 6 are provided on the frame 1. The left frame 2 is installed on one side of the frame 1. The drive mechanism 3 is used to drive the lower pressure roller 7 and the upper pressure roller 8 to rotate. Specifically, the drive mechanism 3 includes a drive motor, a reducer, and a gear set. The gear set includes a first gear, a second gear, a third gear, and a fourth gear. The drive motor is connected to the reducer. The output end of the reducer is equipped with the first gear. The first gear is connected to the second gear through gear meshing. The second gear is connected to the third gear through gear meshing. The third gear is connected to the fourth gear through gear meshing.

[0033] More specifically, the right support 5 is located on the side of the frame 1 away from the left frame 2. The right frame 4 is movably connected to the right support 5 and to the telescopic mechanism 6. The other end of the telescopic mechanism 6 is movably connected to the frame 1. The telescopic mechanism 6 can be either a hydraulic telescopic rod or an electric telescopic rod. When the telescopic mechanism 6 is activated, it can drive the right frame 4 to rotate around the right support 5, thereby adjusting the distance between the right frame 4 and the left frame 2. This facilitates the delivery of the lower pressure roller 7 and the upper pressure roller 8 between the left frame 2 and the right frame 4.

[0034] After the activated carbon electrode is compacted by the lower pressure roller 7 and the upper pressure roller 8, the gaps inside it gradually decrease, which can improve the overall strength of the activated carbon electrode.

[0035] It should be noted that there are two lower pressure rollers 7 and one upper pressure roller 8, with the upper pressure roller 8 located between the two lower pressure rollers 7; at the same time, there can be two lower pressure rollers 7 and two upper pressure rollers 8, with the lower pressure rollers 7 and the upper pressure roller 8 aligned vertically.

[0036] To prevent activated carbon powder from adhering to the upper pressure roller 8 and lower pressure roller 7 during the extrusion process, a scraping mechanism 9 is provided on the frame 1. The scraping mechanism 9 includes a scraper 901, a blade holder 902, a mounting base 903, a support frame 904, and a power mechanism 905. The scraper 901 is mounted on the blade holder 902. It should be noted that there are two blade holders 902, and the two blade holders 902 are located on both sides of the scraper 901.

[0037] Specifically, the tool holder 902 is connected to the mounting base 903, the mounting base 903 is movably connected to the support frame 904, and the support frame 904 is located on the upper side of the frame 1. The tool holder 902 is movably connected to one end of the power mechanism 905, and the other end of the power mechanism 905 is movably connected to the frame 1. The power mechanism 905 can be a hydraulic telescopic rod, an electric telescopic rod, or a cylinder.

[0038] When the power mechanism 905 is activated, it can pull the knife holder 902 to rotate around the mounting base 903, so that the knife holder 902 and the mounting base 903 rotate around the support frame 904. The scraper 901 is inserted into the knife holder 902. The distance between the scraper 901 and the lower pressure roller 7 or the upper pressure roller 8 can be adjusted as needed. The scraper 901 can scrape off the raw material powder adhering to the lower pressure roller 7 or the upper pressure roller 8, keeping the outer surface of the lower pressure roller 7 and the upper pressure roller 8 clean. In this way, when the lower pressure roller 7 and the upper pressure roller 8 extrude the activated carbon electrode sheet, the pressure applied to each part is the same, and the extruded activated carbon electrode sheet is flat and there will be no pits or protrusions on it.

[0039] More specifically, the scraping mechanism 9 includes a lower scraping mechanism and an upper scraping mechanism. The lower scraping mechanism is aligned with the lower pressure roller 7 and the internal scraper 901 is located on the lower side of the lower pressure roller 7. The upper scraping mechanism is aligned with the upper pressure roller 8 and the internal scraper 901 is located on the upper side of the upper pressure roller 8.

[0040] It should be noted that the upper scraping mechanism has a mounting frame on its upper side, which is connected to the frame 1. The lower scraping mechanism has a base plate 10, square tubes 11, sliders 12, and guide rails 13 on its lower side. Several square tubes 11 are arranged on the lower side of the base plate 10 and are mounted on the frame 1. Two sliders 12 are located on the lower side of the base plate 10, and the two sliders 12 are located on opposite sides of the base plate 10. The sliders 12 are movably connected to the guide rails 13, and the two guide rails 13 are laid parallel to each other on the frame 1. Both scraping mechanisms 9 are set on the base plate 10 and correspond to the two lower pressure rollers 7 respectively.

[0041] In summary, this utility model provides a roll forming device for activated carbon used in supercapacitor electrodes. Multiple scraping mechanisms 9 are provided on the frame 1. When the power mechanism 905 is activated, it pulls the blade holder 902 to rotate around the mounting base 903, causing the blade holder 902 and mounting base 903 to rotate around the support frame 904. A scraper 901 is inserted into the blade holder 902. The distance between the scraper 901 and the lower pressure roller 7 or upper pressure roller 8 can be adjusted as needed. The scraper 901 can scrape off the raw material powder adhering to the lower pressure roller 7 or upper pressure roller 8, keeping the outer surface of the lower pressure roller 7 and upper pressure roller 8 clean. This ensures that the pressure applied to the activated carbon electrode sheet is uniform throughout when the lower pressure roller 7 and upper pressure roller 8 are pressing, resulting in a flat activated carbon electrode sheet without pits or protrusions.

[0042] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A roll forming apparatus for activated carbon for supercapacitor electrodes, comprising a frame (1), a lower pressure roller (7), and an upper pressure roller (8), wherein the lower pressure roller (7) and the upper pressure roller (8) are both mounted on the frame (1), characterized in that, The frame (1) is provided with a left frame (2), a drive mechanism (3), and a right frame (4); The frame (1) is provided with a scraping mechanism (9), which includes a scraper (901), a tool holder (902), a mounting base (903), a support frame (904), and a power mechanism (905). The scraper (901) is mounted on the tool holder (902). The tool holder (902) is connected to the mounting base (903), the mounting base (903) is movably connected to the support frame (904), and the support frame (904) is set on the upper side of the frame (1). The tool holder (902) is movably connected to one end of the power mechanism (905), and the other end of the power mechanism (905) is movably connected to the frame (1). The scraping mechanism (9) includes a lower scraping mechanism and an upper scraping mechanism. The lower scraping mechanism is aligned with the lower pressure roller (7) and the internal scraper (901) is located on the lower side of the lower pressure roller (7). The upper scraping mechanism is aligned with the upper pressure roller (8) and the internal scraper (901) is located on the upper side of the upper pressure roller (8).

2. The roll forming apparatus for activated carbon for supercapacitor electrodes as described in claim 1, characterized in that, The drive mechanism (3) includes a drive motor, a reducer, and a gear set, with the drive motor connected to the reducer.

3. The roll forming apparatus for activated carbon for supercapacitor electrodes as described in claim 2, characterized in that, The gear set includes a first gear, a second gear, a third gear, and a fourth gear.

4. The roll forming apparatus for activated carbon for supercapacitor electrodes as described in claim 3, characterized in that, The output end of the reducer is equipped with a first gear, which is connected to a second gear through gear meshing. The second gear is connected to a third gear through gear meshing, and the third gear is connected to a fourth gear through gear meshing.

5. The roll forming apparatus for activated carbon for supercapacitor electrodes as described in claim 1, characterized in that, The frame (1) is also provided with a right support (5) and a telescopic mechanism (6). The left frame (2) is installed on one side of the frame (1). The drive mechanism (3) is used to drive the lower pressure roller (7) and the upper pressure roller (8) to rotate.

6. The roll forming apparatus for activated carbon for supercapacitor electrodes as described in claim 5, characterized in that, The right support (5) is located on the side of the frame (1) away from the left frame (2). The right frame (4) is movably connected to the right support (5). The right frame (4) is movably connected to the telescopic mechanism (6). The other end of the telescopic mechanism (6) is movably connected to the frame (1).

7. The roll forming apparatus for activated carbon for supercapacitor electrodes as described in claim 6, characterized in that, The telescopic mechanism (6) can be either a hydraulic telescopic rod or an electric telescopic rod.

8. The roll forming apparatus for activated carbon for supercapacitor electrodes as described in claim 1, characterized in that, There are two lower pressure rollers (7) and one upper pressure roller (8), with the upper pressure roller (8) located between the two lower pressure rollers (7).

9. The roll forming apparatus for activated carbon for supercapacitor electrodes as described in claim 1, characterized in that, There are two blade holders (902), and the two blade holders (902) are located on both sides of the scraper (901).

10. The roll forming apparatus for activated carbon for supercapacitor electrodes as described in claim 1, characterized in that, The upper scraping mechanism is provided with an mounting frame on its upper side, which is connected to the frame (1). The lower scraping mechanism is provided with a base plate (10), a square tube (11), a slider (12), and a guide rail (13) on its lower side. Several square tubes (11) are provided on the lower side of the base plate (10), and the square tubes (11) are installed on the frame (1). The slider (12) is located on the lower side of the base plate (10). There are two sliders (12), and the two sliders (12) are located on the two sides of the base plate (10). The sliders (12) are movably connected to the guide rails (13), and the two guide rails (13) are laid parallel on the frame (1).

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