A solid-state electrolyte preparation device for a solid-state lithium battery

Abstract

The application discloses a solid-state electrolyte preparation equipment for solid-state lithium batteries, which comprises a base, the top surface of the base is fixedly connected with a shell, a pushing mechanism is arranged on the top surface of the base, the inner wall of the shell is fixedly connected with a printing sleeve, the inside of the printing sleeve is provided with a slurry brushing mechanism, the inside of the slurry brushing mechanism is provided with a slag scraping mechanism, the pushing mechanism comprises an electric sliding rail, the electric sliding rail is fixedly connected to the top surface of the base, the surface of the electric sliding rail is slidably connected with an electric sliding sleeve, the inner wall of the shell is fixedly connected with a fixing frame, and the top surface of the fixing frame is fixedly connected with a rack. The application realizes that the film forming disc shakes back and forth in a high-frequency small-amplitude way during advancing, makes the film forming more uniform, makes the slurry distribution uniform through continuous slight shaking, eliminates the film surface stripes and bubbles, and improves the film forming uniformity and surface quality of the solid-state electrolyte.

Description

Technical Field

[0001] This invention belongs to the field of battery manufacturing, specifically relating to a solid electrolyte preparation device for solid-state lithium batteries. Background Technology

[0002] Solid-state electrolytes, as the core component of all-solid-state lithium batteries, are a key technological path to solve the safety hazards and energy density bottlenecks of traditional liquid lithium batteries. By replacing flammable liquid electrolytes and porous membranes with solid-state ionic conductors, they eliminate the risks of leakage, combustion, and explosion at the source, making them suitable for high-end applications such as new energy vehicles, energy storage power stations, and aerospace.

[0003] Patent CN120839985A discloses a solid electrolyte preparation device and process for solid-state lithium batteries, including a high-temperature chamber. Inside the high-temperature chamber are alternating arrangement components, and four ejector pipes are connected to these components in a rectangular arrangement. Each ejector pipe has a flexible tube fixedly connected to its upper end near the edge, and the ends of the flexible tubes are fixedly connected to conduits. These conduits extend from the front end of the high-temperature chamber. Multiple sets of positioning slots are evenly distributed and fixedly installed on the feeding belt of the high-temperature chamber. Each set of positioning slots consists of two slots, symmetrically arranged, with a substrate placed between the grooves of the two positioning slots. This patent improves the forming quality of the solid electrolyte and can accommodate electrolyte membranes of different sizes, while avoiding obstruction from adjacent ejector pipes during ejector pipe movement. The aforementioned device struggles to ensure the uniformity of the electrolyte membrane during the molding process, leading to a decrease in the quality of the device. Furthermore, the failure to promptly eliminate air bubbles in the slurry during molding results in pinholes in the formed electrolyte membrane, further reducing its performance. Additionally, dried slurry debris may be present in the slurry during molding, causing it to mix into the electrolyte membrane and affecting its molding effect. Therefore, a solid electrolyte preparation device for solid-state lithium batteries is proposed to address these issues. Summary of the Invention

[0004] The purpose of this invention is to provide a solid electrolyte preparation device for solid lithium batteries, in order to solve the problems of difficulty in ensuring the uniformity of the electrolyte membrane during the molding process, the failure to eliminate air bubbles in the slurry in time during the molding process, and the presence of dried slurry debris in the slurry during the molding process, which may lead to the inclusion of debris into the electrolyte membrane.

[0005] To achieve the above objectives, the present invention provides a solid electrolyte preparation device for solid lithium batteries, comprising: a base, a shell fixedly connected to the top surface of the base, an ejection mechanism provided on the top surface of the base, a printing sleeve fixedly connected to the inner wall of the shell, a brushing mechanism provided inside the printing sleeve, and a slag scraping mechanism provided inside the brushing mechanism. The ejection mechanism includes an electric slide rail, which is fixedly connected to the top surface of the base. An electric sliding sleeve is slidably connected to the surface of the electric slide rail. A fixing frame is fixedly connected to the inner wall of the outer shell. A rack is fixedly connected to the top surface of the fixing frame. A rotating shaft is rotatably connected to the inner wall of the electric sliding sleeve. A slider is slidably connected to the top surface of the fixing frame. The rotating shaft is rotatably connected to the inner wall of the slider. A gear is fixedly connected to the left end of the rotating shaft, and the gear meshes with the rack.

[0006] In one or more embodiments of the present invention, a film-forming disk is slidably connected to the surface of the electric sliding sleeve, a fixing block one is fixedly connected to the surface of the electric sliding sleeve, a fixing block two is fixedly connected to the left side of the film-forming disk, the fixing block two is slidably connected to the surface of the electric sliding sleeve by a spring, a cam is fixedly connected to the right end of the rotating shaft one, and the fixing block two is set on the movement trajectory of the cam. When the device is running, the electric sliding sleeve moves forward on the surface of the electric sliding rail, the electric sliding sleeve drives the film-forming disk to move, and at the same time the electric sliding sleeve moves, it drives the rotating shaft one to move. While the rotating shaft one moves, it also drives the gear to move forward. At this time, the gear meshes with the rack and the rack drives the gear to rotate. The rotation of the gear drives the cam to rotate. When the cam rotates to the working range of the second fixed block, the cam drives the second fixed block forward and compresses the spring connecting the first and second fixed blocks. The forward movement of the second fixed block drives the film-forming disk forward. When the cam rotates away from the working range of the second fixed block, due to the action of the spring connecting the first and second fixed blocks, the second fixed block quickly rebounds and resets, driving the film-forming disk to move backward. This process repeats, and the movement of the electric sliding sleeve drives the film-forming disk to slide back and forth rapidly on the surface of the electric sliding sleeve. This achieves high-frequency, small-amplitude backward shaking of the film-forming disk during forward movement, which is used to make the film formation more uniform. Through continuous micro-shaking, the slurry is evenly distributed, eliminating film surface streaks and bubbles, and improving the uniformity and surface quality of solid electrolyte membrane formation.

[0007] In one or more embodiments of the present invention, the ejection mechanism further includes a trigger block, the trigger block being fixedly connected to the top surface of the second fixing block, the inner wall of the printing sleeve being fixedly connected to a third fixing block, the bottom surface of the third fixing block being fixedly connected to a guide post, and the circumferential surface of the guide post being slidably connected to a fourth fixing block by a spring.

[0008] In one or more embodiments of the present invention, a scraper is fixedly connected to the front side of the fixed block four, and the scraper is slidably connected to the inner wall of the printing sleeve. An inclined block is fixedly connected to the rear side of the scraper, and the inclined block is set on the movement trajectory of the trigger block. When the electric sliding sleeve moves forward, the electric sliding sleeve drives the film forming disk to move forward. The film forming disk moves forward, which drives the fixed block two to move forward. The fixed block two moves forward, which drives the trigger block to move forward. When the trigger block moves to the working range of the inclined block, the trigger block squeezes and drives the inclined block to move downward. The inclined block drives the scraper to move downward and stretches the spring connected between the fixed block three and the fixed block four. The electric sliding sleeve moves forward, which drives the scraper to move downward. This realizes the forming and cutting of the electrolyte membrane, removes the thick edges, burrs, warping, bubbles and defective areas caused by the casting process at the edge of the membrane, ensures that the membrane size is accurate and uniform, and the edges are neat and clean. This reduces the risk of short circuit and leakage during battery assembly and improves the overall yield and reliability of the solid electrolyte membrane.

[0009] In one or more embodiments of the present invention, the paste brushing mechanism includes a paste box, the paste box is fixedly connected to the inner wall of the printing sleeve, a sealing plate is fixedly connected to the inner wall of the paste box, a hollow roller is rotatably connected to the inner wall of the paste box, the surface of the sealing plate is in contact with the inner wall of the hollow roller, and a second sealing plate is fixedly connected to the inner wall of the paste box.

[0010] In one or more embodiments of the present invention, an inner plate is fixedly connected to the top surface of the sealing plate, the surface of the inner plate is in contact with the inner wall of the hollow roller, a spiral rod is fixedly connected to the surface of the inner plate, a roller is fixedly connected to the end face of the spiral rod, and the circumferential surface of the roller is in contact with the inner wall of the hollow roller. As the film-forming disc moves forward, the film-forming disc drives the hollow roller, which is closely attached to the film-forming disc, to rotate on the inner wall of the slurry box. The rotation of the slurry box drives the roller to rotate, and the rotation of the roller drives the spiral rod to rotate. At this time, the slurry stored in the slurry box is absorbed by the hollow roller and spread evenly on the surface of the film-forming disc. The movement of the film-forming disc drives the spiral rod to rotate, thereby achieving the effect of breaking up air bubbles in the slurry before molding. The rotation of the spiral rod performs axial forced homogenization, dynamic shearing to break up bubbles, and continuous stirring to prevent sedimentation of the slurry in the roller. At the same time, a directional flow field is formed to guide the air bubbles to the micropores on the roller surface for adsorption and discharge.

[0011] In one or more embodiments of the present invention, the slurry brushing mechanism further includes a fixed box, which is fixedly connected to the inner wall of the slurry box. An electric push rod is fixedly connected to the inner wall of the fixed box. A spiral column is spirally connected to the inner wall of the fixed box. A positioning plate is fixedly connected to the circumferential surface of the spiral column. A pressure plate is fixedly connected to the telescopic end of the electric push rod. The positioning plate is rotatably connected to the inner wall of the pressure plate. A stirring plate is fixedly connected to the bottom end of the spiral column. Simultaneously with the rotation of the hollow roller, the electric push rod is activated. The telescopic end of the electric push rod extends and retracts quickly, driving the pressure plate to move up and down continuously on the inner wall of the slurry box. This continuous up-and-down movement of the pressure plate on the inner wall of the slurry box, driven by the telescopic end of the electric push rod, continuously impacts the surface of the slurry in the slurry box, pressurizing the liquid surface and compressing the foam, stabilizing the slurry supply pressure and liquid level, and ensuring that the slurry is delivered to the coating area in a uniform, dense, and bubble-free manner. This significantly improves the uniformity, density, and surface smoothness of the solid electrolyte green film, and reduces pinholes, streaks, and thickness differences.

[0012] In one or more embodiments of the present invention, the slag scraping mechanism includes a second rotating shaft, which is rotatably connected to the inner wall of the pressure plate. A friction wheel is fixedly connected to the end face of the second rotating shaft. The circumferential surface of the friction wheel is in contact with the inner wall of the slurry box. An external scraping tooth is rotatably connected to the side of the friction wheel. The slurry box is positioned on the movement trajectory of the external scraping tooth. During the downward movement of the pressure plate, the pressure plate drives the second rotating shaft to move downward, and the second rotating shaft drives the friction wheel to move downward. As the friction wheel moves downward, it is in close contact with the inner wall of the slurry box. The rotation of the friction wheel drives the second rotating shaft to rotate, which in turn drives the outer scraper teeth to rotate until they are pressed against the inner wall of the slurry box and move downwards. The movement of the pressure plate drives the outer scraper teeth to rotate and move downwards, thus scraping the dried slurry off the inner wall of the slurry box and collecting it in the filter box. This process removes the wear debris and scale adhering to the inner wall and guides them into the filter box, preventing the wear debris from falling back into the slurry. This achieves self-cleaning of the inner wall of the slurry box and control of wear debris, preventing wear debris from mixing into the slurry and electrolyte membrane, which would affect the preparation effect of the device.

[0013] In one or more embodiments of the present invention, a bidirectional spiral groove is formed on the circumferential surface of the second rotating shaft, a sliding ring is movably connected to the circumferential surface of the second rotating shaft, and an inner scraping tooth is fixedly connected to the surface of the sliding ring, the surface of the inner scraping tooth being in contact with the surface of the second rotating shaft.

[0014] In one or more embodiments of the present invention, an elastic sliding sleeve is fixedly connected to the inner wall of the slurry box, and a filter box is slidably connected to the top surface of the elastic sliding sleeve by a spring. The filter box is set on the movement trajectory of the pressure plate. While the second rotating shaft rotates, the rotation of the second rotating shaft drives the sliding ring to move along the bidirectional spiral groove opened on the surface of the second rotating shaft. The movement of the sliding ring drives the inner scraper teeth to move close to the surface of the outer scraper teeth. The rotation of the second rotating shaft drives the inner scraper teeth to move on the surface of the outer scraper teeth, thereby achieving the shearing effect of scraping off the debris. The crushed fine particles flow back to the slurry box through the filter box, and are dispersed by the internal moving structure of the hollow roller and the pressure plate, and are uniformly mixed back into the slurry for reuse. This avoids debris contamination of film formation and improves the slurry utilization rate.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Through the coordinated operation of the electric slide rail, electric sliding sleeve, fixing frame, rack, rotating shaft one, slider, gear, film forming disc, fixing block one, fixing block two, cam, trigger block, fixing block three, guide column, fixing block four, scraper and inclined block, the electric sliding sleeve moves and drives the film forming disc to slide rapidly back and forth on the surface of the electric sliding sleeve. This achieves high-frequency small-amplitude backward shaking of the film forming disc during forward movement, which is used to make the film forming more uniform. The continuous micro-shaking makes the slurry evenly distributed, eliminates film surface streaks and bubbles, and improves the uniformity and surface quality of solid electrolyte membrane forming. The electric sliding sleeve moves forward and drives the scraper to move downward, realizing the forming and cutting of electrolyte membrane, removing thick edges, burrs, warping, bubbles and defective areas caused by casting at the edge of the membrane, ensuring accurate and uniform membrane size and neat and clean edges, reducing the risk of short circuit and leakage during battery assembly, and improving the overall yield and reliability of solid electrolyte membrane.

[0016] 2. Through the coordinated operation of the slurry box, sealing plate one, hollow roller, sealing plate two, inner plate, spiral rod, roller, fixed box, electric push rod, spiral column, positioning plate, stirring plate and pressure plate, the spiral rod is rotated by the movement of the film forming plate, which realizes the effect of breaking up air bubbles in the slurry before molding. The rotation of the spiral rod performs axial forced uniformity, dynamic shearing and bubble breaking and continuous stirring to prevent sedimentation of the slurry in the roller. At the same time, a directional flow field is formed to guide the air bubbles to the micropores of the roller surface for adsorption and discharge. The extension end of the electric push rod drives the pressure plate to move up and down continuously on the inner wall of the slurry box, realizing the continuous patting of the slurry surface in the slurry box, pressurizing the liquid surface and compressing the foam, stabilizing the slurry supply pressure and liquid level, so that the slurry is delivered to the coating area in a uniform, dense and bubble-free manner, which significantly improves the uniformity, density and surface smoothness of the solid electrolyte green film, and reduces pinholes, streaks and thickness difference defects.

[0017] 3. Through the coordinated operation of the rotating shaft, friction wheel, outer scraper teeth, sliding ring, inner scraper teeth, filter box, and elastic sliding sleeve, the pressure plate moves, driving the outer scraper teeth to rotate and move downward. This allows the outer scraper teeth to scrape off the dried slurry from the inner wall of the slurry box, which is then collected by the filter box. The wear debris and scale adhering to the inner wall are scraped upward and guided into the filter box, preventing wear debris from falling back into the slurry. This achieves self-cleaning of the inner wall of the slurry box and control of wear debris, preventing wear debris from mixing into the slurry and electrolyte membrane, thus affecting the preparation effect of the device. The rotation of the rotating shaft drives the inner scraper teeth to move on the surface of the outer scraper teeth, achieving a shearing effect on the scraped debris. The crushed fine particles flow back into the slurry box through the filter box, where they are dispersed by the internal moving structure of the hollow roller and the pressure plate, and then uniformly mixed back into the slurry for reuse. This avoids debris contamination of the film formation and improves the slurry utilization rate. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure in one embodiment of the present invention; Figure 2 This is a half-sectional view of the overall structure in one embodiment of the present invention; Figure 3 This is a schematic diagram of the mechanism structure in one embodiment of the present invention; Figure 4 As shown in one embodiment of the present invention Figure 3 Enlarged view of the structure at point A in the middle; Figure 5 As shown in one embodiment of the present invention Figure 3 Enlarged view of the structure at point B in the middle; Figure 6 This is a schematic diagram of the plastering mechanism in one embodiment of the present invention; Figure 7 As shown in one embodiment of the present invention Figure 6 Schematic diagram of the structure at point C; Figure 8 This is a schematic diagram of a hollow roller structure in one embodiment of the present invention; Figure 9 This is a schematic diagram of the slag scraping mechanism in one embodiment of the present invention; Figure 10 As shown in one embodiment of the present invention Figure 9 Enlarged view of the structure at point D.

[0019] Explanation of key figure labels: 1. Base; 2. Housing; 3. Ejection mechanism; 31. Electric slide rail; 32. Electric sliding sleeve; 33. Fixing frame; 34. Rack; 35. Rotating shaft one; 36. Slider; 37. Gear; 38. Film forming disc; 39. Fixing block one; 310. Fixing block two; 311. Cam; 312. Trigger block; 313. Fixing block three; 314. Guide post; 315. Fixing block four; 316. Scraper; 317. Inclined block; 4. Printing sleeve; 5. Slurry brush Mechanism; 51. Slurry box; 52. Sealing plate one; 53. Hollow roller; 54. Sealing plate two; 55. Inner plate; 56. Spiral rod; 57. Roller; 58. Fixing box; 59. Electric push rod; 510. Spiral column; 511. Positioning plate; 512. Stirring plate; 513. Pressure plate; 6. Slag scraping mechanism; 61. Rotating shaft two; 62. Friction wheel; 63. Outer scraper teeth; 64. Sliding ring; 65. Inner scraper teeth; 66. Filter box; 67. Elastic sliding sleeve. Detailed Implementation

[0020] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0021] like Figure 1-10 As shown, one embodiment of the present invention is a solid electrolyte preparation device for a solid lithium battery, comprising: a base 1, a shell 2 fixedly connected to the top surface of the base 1, an ejection mechanism 3 provided on the top surface of the base 1, a printing sleeve 4 fixedly connected to the inner wall of the shell 2, a brushing mechanism 5 provided inside the printing sleeve 4, and a slag scraping mechanism 6 provided inside the brushing mechanism 5. The ejection mechanism 3 includes an electric slide rail 31, which is fixedly connected to the top surface of the base 1. An electric slide sleeve 32 is slidably connected to the surface of the electric slide rail 31. A fixing frame 33 is fixedly connected to the inner wall of the outer shell 2. A rack 34 is fixedly connected to the top surface of the fixing frame 33. A rotating shaft 35 is rotatably connected to the inner wall of the electric slide sleeve 32. A slider 36 is slidably connected to the top surface of the fixing frame 33. The rotating shaft 35 is rotatably connected to the inner wall of the slider 36. A gear 37 is fixedly connected to the left end of the rotating shaft 35. The gear 37 meshes with the rack 34.

[0022] A film-forming disk 38 is slidably connected to the surface of the electric sliding sleeve 32, and a fixing block 39 is fixedly connected to the surface of the electric sliding sleeve 32. A fixing block 310 is fixedly connected to the left side of the film-forming disk 38. The fixing block 310 is slidably connected to the surface of the electric sliding sleeve 32 by a spring. A cam 311 is fixedly connected to the right end of the rotating shaft 35. The fixing block 310 is set on the movement trajectory of the cam 311. The movement of the electric sliding sleeve 32 drives the film-forming disk 38 to slide back and forth quickly on the surface of the electric sliding sleeve 32, realizing the high-frequency small-amplitude backward shaking of the film-forming disk 38 during forward movement, which is used to make the film formation more uniform. The continuous micro-shaking makes the slurry distribution uniform, eliminates film surface streaks and bubbles, and improves the uniformity and surface quality of solid electrolyte membrane formation.

[0023] The ejection mechanism 3 also includes a trigger block 312, which is fixedly connected to the top surface of the second fixed block 310. The inner wall of the printing sleeve 4 is fixedly connected to the third fixed block 313, and the bottom surface of the third fixed block 313 is fixedly connected to the guide post 314. The fourth fixed block 315 is slidably connected to the circumferential surface of the guide post 314 by a spring.

[0024] A scraper 316 is fixedly connected to the front side of the fixed block 4 315. The scraper 316 is slidably connected to the inner wall of the printing sleeve 4. An inclined block 317 is fixedly connected to the rear side of the scraper 316. The inclined block 317 is set on the movement trajectory of the trigger block 312. The electric sliding sleeve 32 moves forward and drives the scraper 316 to move downward, realizing the forming and cutting of the electrolyte membrane. This removes the thick edges, burrs, warping, bubbles and defective areas caused by the casting process at the edge of the membrane, ensuring that the membrane size is accurate and uniform and the edges are neat and clean. This reduces the risk of short circuit and leakage during battery assembly and improves the overall yield and reliability of the solid electrolyte membrane.

[0025] The paste application mechanism 5 includes a paste box 51, which is fixedly connected to the inner wall of the printing sleeve 4. A sealing plate 52 is fixedly connected to the inner wall of the paste box 51. A hollow roller 53 is rotatably connected to the inner wall of the paste box 51. The surface of the sealing plate 52 is in contact with the inner wall of the hollow roller 53. A second sealing plate 54 is fixedly connected to the inner wall of the paste box 51.

[0026] An inner plate 55 is fixedly connected to the top surface of the sealing plate 52. The surface of the inner plate 55 is in contact with the inner wall of the hollow roller 53. A spiral rod 56 is fixedly connected to the surface of the inner plate 55. A roller 57 is fixedly connected to the end face of the spiral rod 56. The circumferential surface of the roller 57 is in contact with the inner wall of the hollow roller 53. The spiral rod 56 is rotated by the movement of the film-forming disk 38, which realizes the effect of breaking up air bubbles in the slurry before molding. The rotation of the spiral rod 56 performs axial forced homogenization, dynamic shearing and bubble breaking and continuous stirring to prevent sedimentation of the slurry in the roller. At the same time, a directional flow field is formed to guide the air bubbles to the micropores on the roller surface for adsorption and discharge.

[0027] The slurry brushing mechanism 5 also includes a fixed box 58, which is fixedly connected to the inner wall of the slurry box 51. An electric push rod 59 is fixedly connected to the inner wall of the fixed box 58, and a spiral column 510 is spirally connected to the inner wall of the fixed box 58. A positioning plate 511 is fixedly connected to the circumferential surface of the spiral column 510. A pressure plate 513 is fixedly connected to the telescopic end of the electric push rod 59. The positioning plate 511 is rotatably connected to the inner wall of the pressure plate 513. A stirring plate 512 is fixedly connected to the bottom end of the spiral column 510. The telescopic end of the electric push rod 59 drives the pressure plate 513 to move up and down continuously on the inner wall of the slurry box 51, thereby continuously striking the surface of the slurry in the slurry box 51, pressurizing the liquid surface and compressing the foam, stabilizing the slurry supply pressure and liquid level, and ensuring that the slurry is delivered to the coating area in a uniform, dense, and bubble-free manner. This significantly improves the uniformity, density, and surface smoothness of the solid electrolyte green film and reduces pinholes, streaks, and thickness differences.

[0028] Working principle: During operation, the electric sliding sleeve 32 moves forward on the surface of the electric sliding rail 31, driving the film-forming disk 38 to move. Simultaneously, the movement of the electric sliding sleeve 32 drives the rotating shaft 35 to move. This movement of the rotating shaft 35, in turn, drives the gear 37 to move forward. At this time, the gear 37 meshes with the rack 34, causing the rack 34 to drive the gear 37 to rotate. The rotation of the gear 37 drives the cam 311 to rotate. When the cam 311 rotates to the working range of the fixed block 310, the cam 311... The second fixed block 310 moves forward and compresses the spring connecting the first fixed block 39 and the second fixed block 310. The forward movement of the second fixed block 310 drives the film-forming disk 38 to move forward. When the cam 311 rotates out of the working range of the second fixed block 310, due to the action of the spring connecting the first fixed block 39 and the second fixed block 310, the second fixed block 310 quickly rebounds and resets, driving the film-forming disk 38 to move backward. This process repeats, and the movement of the electric sliding sleeve 32 drives the film-forming disk 38 to slide rapidly back and forth on the surface of the electric sliding sleeve 32, realizing the film-forming disk 38's rapid reciprocating motion. The membrane disc 38 moves backward at a high frequency with small amplitude during forward movement to ensure more uniform membrane formation. Continuous micro-shaking ensures even slurry distribution, eliminates membrane streaks and bubbles, and improves the uniformity and surface quality of the solid electrolyte membrane. Simultaneously, the electric sliding sleeve 32 moves forward, driving the membrane forming disc 38 forward. This forward movement of the membrane forming disc 38 drives the second fixing block 310 forward, which in turn drives the trigger block 312 forward. When the trigger block 312 reaches the working range of the inclined block 317, the trigger block 31... 2. The pressure and the downward movement of the inclined block 317 cause the scraper 316 to move downward and stretch the spring connected between the fixed block 313 and the fixed block 4 315. The electric sliding sleeve 32 moves forward and drives the scraper 316 downward, thus realizing the forming and cutting of the electrolyte membrane. This removes the thick edges, burrs, warping, bubbles and defective areas caused by the casting process at the edge of the membrane, ensuring that the membrane size is accurate and uniform and the edges are neat and clean. This reduces the risk of short circuits and leakage during battery assembly and improves the overall yield and reliability of solid electrolyte membranes.

[0029] As the film-forming disc 38 moves forward, it drives the hollow roller 53, which is closely attached to the film-forming disc 38, to rotate on the inner wall of the slurry box 51. The rotation of the slurry box 51 drives the roller 57 to rotate, and the rotation of the roller 57 drives the screw rod 56 to rotate. At this time, the slurry stored in the slurry box 51 is absorbed by the hollow roller 53 and spread evenly on the surface of the film-forming disc 38. The movement of the film-forming disc 38 drives the screw rod 56 to rotate, realizing the effect of breaking up air bubbles in the slurry before molding. The rotation of the screw rod 56 performs axial forced homogenization, dynamic shearing and bubble breaking, and continuous stirring to prevent sedimentation of the slurry in the roller. At the same time, a directional flow field is formed to guide the air bubbles to the micropores on the roller surface for adsorption and discharge. As the hollow roller 53 rotates, the electric push rod 59 is activated. At this time, the telescopic end of the electric push rod 59 extends and retracts quickly. The telescopic end of the electric push rod 59 drives the pressure plate 513 to move up and down continuously on the inner wall of the slurry box 51. The telescopic end of the electric push rod 59 drives the pressure plate 513 to move up and down continuously on the inner wall of the slurry box 51, thereby continuously patting the surface of the slurry in the slurry box 51, pressurizing the surface of the liquid and compressing the foam, stabilizing the slurry supply pressure and liquid level, and ensuring that the slurry is delivered to the coating area in a uniform, dense, and bubble-free manner. This significantly improves the uniformity, density, and surface smoothness of the solid electrolyte green film, and reduces defects such as pinholes, streaks, and thickness differences.

[0030] Please see Figure 1-10 Based on the above embodiments, in another embodiment of the present invention, the slag scraping mechanism 6 includes a second rotating shaft 61, which is rotatably connected to the inner wall of the pressure plate 513. A friction wheel 62 is fixedly connected to the end face of the second rotating shaft 61. The circumferential surface of the friction wheel 62 is in contact with the inner wall of the slurry box 51. An external scraping tooth 63 is rotatably connected to the side of the friction wheel 62. The slurry box 51 is set on the movement trajectory of the external scraping tooth 63. The movement of the pressure plate 513 drives the external scraping tooth 63 to rotate and move downward, thereby scraping the dried slurry off the inner wall of the slurry box 51 by the external scraping tooth 63 and collecting it by the filter box 66. The wear debris and scale attached to the inner wall are scraped upward and guided into the filter box 66, preventing the wear debris from falling back into the slurry. This achieves self-cleaning of the inner wall of the slurry box 51 and control of wear debris, preventing wear debris from mixing into the slurry and into the electrolyte membrane, thus affecting the preparation effect of the device.

[0031] A bidirectional spiral groove is provided on the circumferential surface of the second rotating shaft 61. A sliding ring 64 is movably connected to the circumferential surface of the second rotating shaft 61. An inner scraper tooth 65 is fixedly connected to the surface of the sliding ring 64. The surface of the inner scraper tooth 65 is in contact with the surface of the second rotating shaft 61.

[0032] An elastic sliding sleeve 67 is fixedly connected to the inner wall of the slurry box 51. A filter box 66 is slidably connected to the top surface of the elastic sliding sleeve 67 via a spring. The filter box 66 is set on the movement trajectory of the pressure plate 513. The rotation of the rotating shaft 61 drives the inner scraper tooth 65 to move on the surface of the outer scraper tooth 63, realizing the shearing effect of scraping off the debris. The crushed fine particles flow back to the slurry box 51 through the filter box 66. They are dispersed by the internal moving structure of the hollow roller 53 and the pressure plate 513, and then evenly mixed back into the slurry for reuse. This avoids debris contamination of the film formation and improves the slurry utilization rate.

[0033] Working principle: During the downward movement of the pressure plate 513, the pressure plate 513 drives the rotating shaft 61 to move downward, which in turn drives the friction wheel 62 to move downward. As the friction wheel 62 moves downward, it adheres tightly to the inner wall of the slurry box 51 and rotates. The rotation of the friction wheel 62 drives the rotating shaft 61 to rotate, which in turn drives the outer scraper tooth 63 to rotate until the outer scraper tooth 63 adheres tightly to the inner wall of the slurry box 51 and moves downward. The movement of the pressure plate 513 drives the rotation and downward movement of the outer scraper tooth 63, thus scraping the dried slurry off the inner wall of the slurry box 51. This slurry is then collected by the filter box 66. The wear debris and scale adhering to the inner wall are scraped upward and guided into the filter box 66, preventing the wear debris from falling back into the slurry. The self-cleaning and abrasive control of the inner wall of the slurry box 51 prevents abrasive particles from mixing into the slurry and electrolyte membrane, thus affecting the preparation effect of the device. While the rotating shaft 61 rotates, the rotating shaft 61 drives the sliding ring 64 to move along the bidirectional spiral groove opened on the surface of the rotating shaft 61. The movement of the sliding ring 64 drives the inner scraper tooth 65 to move closely against the surface of the outer scraper tooth 63. The rotation of the rotating shaft 61 drives the inner scraper tooth 65 to move on the surface of the outer scraper tooth 63, realizing the shearing effect of scraping off the debris. The crushed fine particles are returned to the slurry box 51 through the filter box 66. They are dispersed by the internal moving structure of the hollow roller 53 and the pressure plate 513 and are uniformly mixed back into the slurry for reuse. This not only avoids debris contamination of the film formation but also improves the slurry utilization rate.

[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A solid electrolyte preparation apparatus for solid-state lithium batteries, characterized in that, include: A base (1) is fixedly connected to a shell (2) on its top surface. A push-out mechanism (3) is provided on the top surface of the base (1). A printing sleeve (4) is fixedly connected to the inner wall of the shell (2). A brushing mechanism (5) is provided inside the printing sleeve (4). A slag scraping mechanism (6) is provided inside the brushing mechanism (5). The ejection mechanism (3) includes an electric slide rail (31), which is fixedly connected to the top surface of the base (1). An electric slide sleeve (32) is slidably connected to the surface of the electric slide rail (31). A fixing frame (33) is fixedly connected to the inner wall of the outer shell (2). A rack (34) is fixedly connected to the top surface of the fixing frame (33). A rotating shaft (35) is rotatably connected to the inner wall of the electric slide sleeve (32). A slider (36) is slidably connected to the top surface of the fixing frame (33). The rotating shaft (35) is rotatably connected to the inner wall of the slider (36). A gear (37) is fixedly connected to the left end of the rotating shaft (35). The gear (37) meshes with the rack (34).

2. The solid electrolyte preparation equipment for a solid-state lithium battery according to claim 1, characterized in that, The electric sliding sleeve (32) is slidably connected to a film-forming disk (38), and a fixing block one (39) is fixedly connected to the surface of the electric sliding sleeve (32). A fixing block two (310) is fixedly connected to the left side of the film-forming disk (38). The fixing block two (310) is slidably connected to the surface of the electric sliding sleeve (32) by a spring. A cam (311) is fixedly connected to the right end of the rotating shaft one (35), and the fixing block two (310) is set on the movement trajectory of the cam (311).

3. The solid electrolyte preparation equipment for a solid-state lithium battery according to claim 2, characterized in that, The ejection mechanism (3) also includes a trigger block (312), which is fixedly connected to the top surface of the second fixed block (310). The inner wall of the printing sleeve (4) is fixedly connected to the third fixed block (313), and the bottom surface of the third fixed block (313) is fixedly connected to the guide post (314). The circumferential surface of the guide post (314) is slidably connected to the fourth fixed block (315) by a spring.

4. The solid electrolyte preparation equipment for a solid-state lithium battery according to claim 3, characterized in that, A scraper (316) is fixedly connected to the front side of the fixed block four (315). The scraper (316) is slidably connected to the inner wall of the printing sleeve (4). A wedge (317) is fixedly connected to the rear side of the scraper (316). The wedge (317) is set on the movement trajectory of the trigger block (312).

5. The solid electrolyte preparation equipment for a solid-state lithium battery according to claim 4, characterized in that, The slurry brushing mechanism (5) includes a slurry box (51), which is fixedly connected to the inner wall of the printing sleeve (4). A sealing plate (52) is fixedly connected to the inner wall of the slurry box (51), and a hollow roller (53) is rotatably connected to the inner wall of the slurry box (51). The surface of the sealing plate (52) is in contact with the inner wall of the hollow roller (53), and a sealing plate (54) is fixedly connected to the inner wall of the slurry box (51).

6. The solid electrolyte preparation apparatus for a solid-state lithium battery according to claim 5, characterized in that, An inner plate (55) is fixedly connected to the top surface of the sealing plate (52). The surface of the inner plate (55) is in contact with the inner wall of the hollow roller (53). A spiral rod (56) is fixedly connected to the surface of the inner plate (55). A roller (57) is fixedly connected to the end face of the spiral rod (56). The circumferential surface of the roller (57) is in contact with the inner wall of the hollow roller (53).

7. The solid electrolyte preparation apparatus for a solid-state lithium battery according to claim 6, characterized in that, The slurry brushing mechanism (5) also includes a fixed box (58), which is fixedly connected to the inner wall of the slurry box (51). An electric push rod (59) is fixedly connected to the inner wall of the fixed box (58). A spiral column (510) is spirally connected to the inner wall of the fixed box (58). A positioning plate (511) is fixedly connected to the circumferential surface of the spiral column (510). A pressure plate (513) is fixedly connected to the telescopic end of the electric push rod (59). The positioning plate (511) is rotatably connected to the inner wall of the pressure plate (513). A stirring plate (512) is fixedly connected to the bottom end of the spiral column (510).

8. The solid electrolyte preparation apparatus for a solid-state lithium battery according to claim 7, characterized in that, The slag scraping mechanism (6) includes a second rotating shaft (61), which is rotatably connected to the inner wall of the pressure plate (513). A friction wheel (62) is fixedly connected to the end face of the second rotating shaft (61). The circumferential surface of the friction wheel (62) is in contact with the inner wall of the slurry box (51). An external scraping tooth (63) is rotatably connected to the side of the friction wheel (62). The slurry box (51) is set on the movement trajectory of the external scraping tooth (63).

9. The solid electrolyte preparation apparatus for a solid-state lithium battery according to claim 8, characterized in that, The second rotating shaft (61) has a bidirectional spiral groove on its circumferential surface. A sliding ring (64) is movably connected to the circumferential surface of the second rotating shaft (61). An inner scraper tooth (65) is fixedly connected to the surface of the sliding ring (64). The surface of the inner scraper tooth (65) is in contact with the surface of the second rotating shaft (61).

10. The solid electrolyte preparation apparatus for a solid-state lithium battery according to claim 9, characterized in that, The inner wall of the slurry box (51) is fixedly connected to an elastic sliding sleeve (67), and the top surface of the elastic sliding sleeve (67) is slidably connected to a filter box (66) by a spring. The filter box (66) is set on the movement trajectory of the pressure plate (513).

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