Solid-state battery electrostatic film forming machine and method

Abstract

The present application relates to the technical field of solid-state battery manufacturing, and discloses a solid-state battery electrostatic film forming machine and method, which comprises a base, a plate body one arranged on the base, a substrate arranged on the plate body one, an electrostatic generator arranged in the base, and a silk screen arranged on the base, a top of the silk screen is provided with a sprinkling mechanism, the electrostatic generator applies an electrostatic field between the silk screen and the substrate, the sprinkling mechanism is moved to guide raw material powder to the silk screen, the raw material powder is directionally implanted on the surface of the substrate under the driving of the electric field, the substrate carries and forms a film layer, a guide mechanism is arranged between the silk screen and the substrate; the electrode powder in the sprinkling mechanism is evenly spread on the silk screen, which reduces the uneven powder spreading condition caused by traditional manual powder spreading and scraping operation. The regularly arranged baffles on the inner side wall of the feeding bin can further disperse the powder, so that the powder flows out more uniformly from the discharge port.

Description

Technical Field

[0001] This invention relates to the technical field of solid-state battery manufacturing, specifically to a solid-state battery electrostatic film forming machine and method. Background Technology

[0002] In the manufacturing process of solid-state batteries, the preparation of electrode and electrolyte films is a key step. Traditional wet processes have limitations such as solvent residue and difficulty in precisely controlling uniformity. Electrostatic film deposition technology, as an emerging dry process, places electrode powder on a wire mesh and uses a high-voltage electrostatic field to orient the powder to the substrate, thereby forming a uniform and dense film layer. It has advantages such as no need for binders and simplified process.

[0003] However, the current reliance on manual powder spreading and scraping severely restricts the production process and easily leads to uneven powder spreading. This uneven spreading results in inconsistent film quality, thus affecting the performance and stability of solid-state batteries. For example, during battery charging and discharging, uneven film layer may cause excessively high local current density, accelerating battery aging and damage, and shortening battery life. Furthermore, the deposited powder layer may still carry residual charge. If this residual charge is not removed in time, it will interfere with subsequent film formation, further reducing the smoothness and uniformity of the film layer. To address these issues, an electrostatic film forming machine for solid-state batteries is proposed. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a solid-state battery electrostatic film deposition machine and method. This machine and method are capable of uniformly spreading electrode powder onto a wire mesh, avoiding uneven powder spreading caused by manual operation. Furthermore, it is equipped with charge elimination technology, which promptly removes residual charge after powder deposition, ensuring that subsequent film deposition is not interfered with, and improving the smoothness and uniformity of the film layer. This invention solves the problems of traditional electrostatic film deposition technology, which relies on manual powder spreading and scraping, resulting in uneven powder spreading and inconsistent final film quality, affecting the performance and stability of solid-state batteries, as well as the problem of residual charge in the deposited powder layer interfering with subsequent film deposition, reducing the smoothness and uniformity of the film layer.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a solid-state battery electrostatic film forming machine, comprising a base, a plate body first disposed on the base, a substrate disposed on the plate body first, an electrostatic generator disposed inside the base, and a wire mesh disposed on the base. A spraying mechanism is disposed on the top of the wire mesh. The electrostatic generator applies an electrostatic field between the wire mesh and the substrate. A guiding mechanism is disposed between the wire mesh and the substrate. A processing mechanism is disposed on the guiding mechanism. As the wire mesh moves away from the substrate, the wire mesh drives the guiding mechanism to move on the plate body first, thereby driving the processing mechanism to perform electrostatic elimination treatment on the film layer.

[0008] Preferably, the spraying mechanism includes a track, a slide, and a feed bin. The track is located on the top of the wire mesh; the slide slides on the track and a scraper is provided at the bottom of the slide; the feed bin is located on the slide.

[0009] Preferably, two sliders are fixed on both sides of the feed hopper. The two sliders are slidably connected to the slide block three. A roller is rotatably connected inside the slide block three. The roller is engaged with the track one. One end of the roller is connected to a swing mechanism. When the roller rotates, it transmits its rotational force to the swing mechanism. Driven by the rotational force, the swing mechanism drives the two sliders to reciprocate in the up and down direction.

[0010] Preferably, both ends of the scraper are fixed with sliders three, which are slidably connected to the plate body. The sliders three are provided with grooves that cooperate with the swing mechanism. By means of the grooves that cooperate with the swing mechanism, the sliders three generate linear motion when subjected to rotational extrusion, driving the scraper to move and realizing the opening and closing of the discharge port at the bottom of the slide block three.

[0011] Preferably, the swing mechanism includes an eccentric wheel, a connecting rod, and a spring. The eccentric wheel is connected to the roller via a shaft. The connecting rod is rotatably connected to the eccentric wheel. The spring is disposed inside the slide block three, and the top end of the spring is fixedly connected to the slider two.

[0012] Preferably, the inner wall of the feeding hopper has multiple partitions arranged in a regular pattern.

[0013] Preferably, the processing mechanism includes a slider four, an antistatic bar, and a pressure roller. The slider four is connected to the guide mechanism; the antistatic bar is disposed on the slider four; and the pressure roller is rotatably connected to the slider four.

[0014] Preferably, the guiding mechanism includes a second track, a fifth slider, a second plate, a third track, and a guide plate. The second track is fixed to the top surface of the first plate. The fifth slider is slidably connected to the second track. The second plate is fixed to the top surface of the fifth slider, and a telescopic rod is rotatably connected to the top surface of the second plate. The third track is fixed to the bottom surface of the wire mesh, and a sixth slider is slidably connected to the third track. The sixth slider is rotatably connected to the telescopic rod. The guide plate has a first support column and a second support column at its two ends, respectively, which are supported on the first plate. A bolt is threaded onto the second support column, and the bolt is threaded to one end of the third track. The bottom surface of the fourth slider has an elastic part, and the bottom end of the elastic part is fixed to the second plate.

[0015] Preferably, a fine-tuning platform is provided between the plate body one and the base. The fine-tuning platform includes a lifting frame, a slider one, a guide rail one, and a guide rail two. A screw one is threadedly connected to the lifting frame, and a top plate is fixed to the top of the lifting frame. The slider one is slidably connected to the lifting frame, and the slider one is threadedly connected to the screw one. The guide rail one is fixed to the top of the top plate, and a slide block one is slidably connected to the guide rail one. A screw two is rotatably connected to the guide rail one, and the screw two is threadedly connected to the slide block one. The guide rail two is fixed to the top of the slide block one, and a slide block two is slidably connected to the guide rail two. A screw three is rotatably connected to the guide rail two, and the screw three is threadedly connected to the slide block two.

[0016] A method for electrostatic film formation in solid-state batteries includes the following steps:

[0017] The moving spraying mechanism guides the raw material powder onto the screen surface;

[0018] When the electrostatic generator is working, the wire mesh and the substrate generate static electricity. Under the drive of the electric field, the raw material powder is oriented and implanted into the surface of the substrate, and is supported by the substrate to form a film layer.

[0019] (III) Beneficial Effects

[0020] Compared with the prior art, the present invention provides a solid-state battery electrostatic film formation machine and method, which has the following beneficial effects:

[0021] 1. This solid-state battery electrostatic film forming machine uses a moving spraying mechanism to evenly spread electrode powder onto a wire mesh, reducing the uneven powder spreading caused by traditional manual powder spreading and scraping operations. Regularly arranged baffles on the inner wall of the feed hopper further disperse the powder, ensuring a more uniform powder flow from the outlet.

[0022] 2. This solid-state battery electrostatic film forming machine drives the swing mechanism to work while the spraying mechanism moves, so that the feed bin on the second slider makes reciprocating motion in the up and down direction, and the scraper moves, realizing the opening and closing control of the discharge port. It can control the amount and range of powder spreading, thereby ensuring that the final film layer has uniform quality.

[0023] 3. In this solid-state battery electrostatic film forming machine, as the wire mesh moves away from the substrate, the wire mesh drive guide mechanism moves on the plate, thereby driving the processing mechanism to eliminate static electricity in the film layer. This avoids the interference of residual charge on subsequent film formation, effectively improves the flatness and uniformity of the film layer, and makes the various performance indicators of the solid-state battery more stable and reliable.

[0024] 4. The fine-tuning platform of this solid-state battery electrostatic film forming machine greatly facilitates its use. By adjusting screw one, screw two, and screw three, the height of the lifting frame, the position of slide one on guide rail one, and the position of slide two on guide rail two can be adjusted respectively. This multi-dimensional adjustment function allows the equipment to adapt to different production needs and process requirements, improving its versatility and flexibility. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0026] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0027] Figure 3 This is a schematic diagram of the structure of the present invention. Figure 3 ;

[0028] Figure 4 This is a schematic diagram of the structure of the fine-tuning platform in this invention;

[0029] Figure 5 This is a schematic diagram of the guiding mechanism in the present invention. Figure 1 ;

[0030] Figure 6 This is a schematic diagram of the guiding mechanism in the present invention. Figure 2 ;

[0031] Figure 7 This is a schematic diagram of the spraying mechanism in the present invention. Figure 1 ;

[0032] Figure 8 This is a schematic diagram of the spraying mechanism in the present invention. Figure 2 .

[0033] In the picture:

[0034] 100. Base; 110. Housing; 120. Plate 1; 130. Substrate; 140. Wire mesh;

[0035] 200. Fine-tuning platform; 210. Lifting frame; 220. Top plate; 230. Slider 1; 240. Screw 1; 250. Guide rail 1; 260. Slide 1; 270. Screw 2; 280. Guide rail 2; 290. Screw 3; 291. Slide 2;

[0036] 310. Support frame; 320. Connecting rod; 330. Tension spring; 340. Frame; 350. Suction cup;

[0037] 400. Spraying mechanism; 410. Track 1; 420. Slide 3; 421. Slide 1; 430. Feed bin; 431. Slider 2; 440. Scraper; 441. Slider 3; 450. Partition plate; 460. Roller;

[0038] 500. Processing mechanism; 510. Slider four; 520. Antistatic bar; 530. Pressure roller; 540. Elastic part;

[0039] 600. Guide mechanism; 610. Track 2; 620. Slider 5; 630. Plate 2; 640. Telescopic rod; 650. Slider 6; 660. Track 3; 670. Support column 1; 680. Support column 2; 690. Bolt;

[0040] 710, Eccentric wheel; 720, Connecting rod; 730, Spring. Detailed Implementation

[0041] 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. 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.

[0042] In the manufacturing process of solid-state batteries, the preparation of electrode and electrolyte films is a key step. Traditional wet processes have limitations such as solvent residue and difficulty in precisely controlling uniformity. Electrostatic film deposition technology, as an emerging dry process, places electrode powder on a wire mesh and uses a high-voltage electrostatic field to orient the powder to the substrate, thereby forming a uniform and dense film layer. It has advantages such as no need for binders and simplified process.

[0043] However, the current reliance on manual powder spreading and scraping severely restricts the production process and easily leads to uneven powder spreading. This uneven spreading results in inconsistent quality of the final film layer, thus affecting the performance and stability of the solid-state battery. For example, during battery charging and discharging, uneven film layer may cause excessively high local current density, accelerating battery aging and damage, and shortening battery life. Furthermore, the deposited powder layer may still carry residual charge. If this residual charge is not eliminated in time, it will interfere with subsequent film formation, further reducing the smoothness and uniformity of the film layer. This application proposes to use a moving spraying mechanism 400 to evenly spread the electrode powder within the spraying mechanism 400 onto the wire mesh 140, reducing the uneven spreading caused by traditional manual powder spreading and scraping operations. The regularly arranged baffles 450 on the inner wall of the feed hopper 430 can further disperse the powder, allowing the powder to flow out of the outlet more evenly.

[0044] As attached Figure 1-8 As shown, this embodiment provides a solid-state battery electrostatic film forming machine, including a base 100, a plate 120 disposed on the base 100, a substrate 130 disposed on the plate 120, an electrostatic generator disposed inside the base 100, and a wire mesh 140 disposed on the base 100. A housing 110 is fixed to the top of the base 100, which surrounds the wire mesh 140 and the substrate 130. A support frame 310 is fixed to the top of the base 100, and a connecting rod 320 is rotatably connected to the support frame 310. A frame 340 is fixed to one end of the connecting rod 320. One side of the frame 340 has a groove for limiting one side of the wire mesh 140. A suction cup 350 is threadedly connected to the frame 340. By screwing the suction cup 350, the suction cup 350 applies downward pressure to the top surface of the wire mesh 140, thereby limiting the wire mesh 140. A tension spring 330 is connected between the connecting rod 320 and the support frame 310 to limit the rotation of the connecting rod 320.

[0045] A spraying mechanism 400 is provided on the top of the screen 140. An electrostatic generator applies an electrostatic field between the screen 140 and the substrate 130. The moving spraying mechanism 400 guides the raw material powder to the screen 140. Under the drive of the electric field, the raw material powder is oriented and implanted into the surface of the substrate 130, where it is supported and forms a film layer. A guiding mechanism 600 is provided between the screen 140 and the substrate 130, and a processing mechanism 500 is provided on the guiding mechanism 600. As the screen 140 moves away from the substrate 130, the screen 140 drives the guiding mechanism 600 to move on the plate 120, thereby driving the processing mechanism 500 to perform electrostatic elimination treatment on the film layer, ensuring the stability and safety of the film layer. This design effectively avoids problems such as impurity adsorption and structural damage that may occur due to electrostatic accumulation in the film layer, improving the quality of the solid-state battery film layer. At the same time, the coordinated work of the guiding mechanism and the processing mechanism makes the entire film formation process more efficient. After the processing mechanism performs electrostatic elimination treatment on the film layer, the performance of the film layer is further optimized, better meeting the application requirements of solid-state batteries.

[0046] Specifically, an electrostatic generator produces positive and negative charges through friction, induction, or ionization, and then forcibly separates the same type of charge and continuously transports it to an isolated conductor to accumulate, forming a high-voltage, low-current static electricity. This is existing technology and will not be elaborated here. The electrostatic generator is not shown in the attached diagram.

[0047] As attached Figure 4-5 As shown, a fine-tuning platform 200 is provided between the plate 120 and the base 100. The fine-tuning platform 200 includes: a lifting frame 210, a slider 230, a guide rail 250, and a guide rail 280. A screw 240 is threadedly connected to the lifting frame 210, and a top plate 220 is fixed to the top of the lifting frame 210. The slider 230 is slidably connected to the lifting frame 210, and the slider 230 is threadedly connected to the screw 240. The guide rail 250... 0 is fixed to the top of the top plate 220. A slide block 260 is slidably connected to the guide rail 250. A screw 270 is rotatably connected to the guide rail 250 and threadedly connected to the slide block 260. A guide rail 280 is fixed to the top of the slide block 260. A slide block 291 is slidably connected to the guide rail 280. A screw 3 290 is rotatably connected to the guide rail 280 and threadedly connected to the slide block 291.

[0048] Specifically, the lifting frame 210 controls the Y-axis direction of the plate 120, the slide 260 controls the Z-axis direction of the plate 120, and the slide 291 controls the X-axis direction of the plate 120. This precise control across multiple axes allows the equipment to quickly adjust to the optimal working position in different production scenarios. For example, when changing substrates of different specifications or adjusting film deposition process parameters, the fine-tuning platform can quickly and accurately adjust the equipment position, greatly shortening the equipment debugging time and improving production efficiency.

[0049] As attached Figure 7-8 As shown, the spraying mechanism 400 includes a track 410, a slide 420, and a feed bin 430. The track 410 is located on top of the wire mesh 140; the slide 420 slides on the track 410, and a scraper 440 is located at the bottom of the slide 420; the feed bin 430 is located on the slide 420. The feed bin 430 has a funnel structure to concentrate the electrode powder. Multiple baffles 450 are regularly arranged on the inner wall of the feed bin 430. The baffles 450 are vertically arranged, dividing the internal space of the feed bin 430 into multiple independent small areas. The electrode powder in each small area can flow out relatively stably and in equal amounts, avoiding the local accumulation of electrode powder caused by concentrated falling.

[0050] Specifically, as the slide block 420 slides on the track 410, the scraper 440 evenly spreads the electrode powder flowing out of the feed hopper 430 onto the wire mesh 140. This ensures the uniformity of the electrode powder distribution on the wire mesh 140. Because the feed hopper 430 adopts a funnel structure, it can effectively concentrate the electrode powder, avoiding the scattering and waste of electrode powder and improving the utilization rate of materials.

[0051] In actual production, the sliding speed of slide block 3 420 and the angle of scraper 440 can be adjusted according to specific production needs. By precisely controlling the moving speed of slide block 3 420, the thickness of electrode powder laid on the wire mesh can be controlled, thereby meeting the production requirements of solid-state batteries of different specifications. At the same time, adjusting the angle of scraper 440 can change the laying direction and uniformity of electrode powder, further improving the film quality.

[0052] As attached Figure 7-8As shown, sliders 431 are fixed on both sides of the feed hopper 430. Slider 431 is slidably connected to slide block 420. Roller 460 is rotatably connected inside slide block 420. Roller 460 is meshed with track 410. One end of roller 460 is connected to a swing mechanism. When roller 460 rotates, it transmits its rotational force to the swing mechanism. Driven by this rotational force, the swing mechanism drives slider 431 to reciprocate up and down. Roller 460 can be a gear, and track 410 has mating teeth, which are not shown in the attached figure. Slide block 420 has a groove 421, which restricts the up and down movement of feed hopper 430 and slider 431.

[0053] Specifically, the up-and-down reciprocating motion of the feed hopper 430 can play a certain role in stirring. During the feeding process, the electrode powder may clump together or accumulate unevenly. The movement of the feed hopper 430 can break up these clumps, keeping the electrode powder in a loose state, which is more conducive to evenly spreading it on the wire mesh 140.

[0054] As attached Figure 7-8 As shown, both ends of the scraper 440 are fixed with sliders 441, which are slidably connected to the plate 120. A groove (not shown in the attached drawing) is provided on the slide block 420. Slider 441 slides within the groove, and a spring (not shown in the attached drawing) is installed inside the groove to reset slider 441. The spring causes slider 441 to move to its initial position. Slider 441 has a groove that cooperates with the swing mechanism, and the groove has an arc-shaped surface. Through the groove cooperating with the swing mechanism, slider 441 generates linear motion when subjected to rotational compression, driving the scraper 440 to move and thus opening and closing the discharge port at the bottom of the slide block 420.

[0055] Specifically, the oscillating mechanism drives the slider 441 to move linearly, thereby controlling the movement of the scraper 440 and enabling the opening and closing of the discharge port at the bottom of the slide block 420. When the discharge port needs to be opened, the oscillating mechanism moves the slider 441, causing the scraper 440 to slide to one side, opening the discharge port and allowing the electrode powder to flow out smoothly and be spread onto the wire mesh 140. When discharge is not needed, the oscillating mechanism reverses the movement of the slider 441, causing the scraper 440 to slide in the opposite direction, closing the discharge port and preventing the electrode powder from continuing to flow out.

[0056] As attached Figure 7-8As shown, the swing mechanism includes an eccentric wheel 710, a connecting rod 720, and a spring 730. The eccentric wheel 710 is connected to the roller 460 via a shaft; the connecting rod 720 is rotatably connected to the eccentric wheel 710; the spring 730 is disposed inside the slide block 420, and the top of the spring 730 is fixedly connected to the slider 431. The shaft connects to the center position of the eccentric wheel 710, and the connecting rod 720 connects to the eccentric position of the eccentric wheel 710.

[0057] Specifically, when roller 460 drives the shaft to rotate, the shaft drives eccentric wheel 710 to rotate. Since connecting rod 720 is connected to the eccentric position of eccentric wheel 710, the rotation of eccentric wheel 710 causes connecting rod 720 to oscillate. This causes eccentric wheel 710 to press against the groove on slider 441, thereby driving scraper 440 to move. When eccentric wheel 710 rotates, connecting rod 720 is rotatably connected to slider 431, causing slider 431 to move up and down. Spring 730 plays an important role in buffering and resetting throughout the process.

[0058] As attached Figure 4-6 As shown, the processing mechanism 500 includes a slider 510, an antistatic bar 520, and a pressure roller 530. The slider 510 is connected to the guide mechanism 600; the antistatic bar 520 is disposed on the slider 510; and the pressure roller 530 is rotatably connected to the slider 510.

[0059] Specifically, when the guide mechanism 600 moves the slider 510, the antistatic bar 520 and the pressure roller 530 move synchronously. The antistatic bar 520 effectively removes static electricity from the surface of the solid-state battery, preventing the static electricity from attracting dust and other impurities, thus ensuring the cleanliness of the solid-state battery surface. During rotation, the pressure roller 530 uniformly presses the film layer of the solid-state battery, making the film layer smoother and denser. This helps improve the consistency and stability of the solid-state battery film layer.

[0060] The antistatic bar 520 uses high-voltage corona discharge (usually applying high voltage to the tip electrode) to ionize the surrounding air and generate a large number of positive and negative ions. These ions are attracted to the surface of charged objects and combine with opposite charges to neutralize static electricity, thereby quickly eliminating static electricity accumulation. This is existing technology and will not be elaborated here.

[0061] As attached Figure 4-6As shown, the guide mechanism 600 includes a second track 610, a fifth slider 620, a second plate 630, a third track 660, and a guide plate. The second track 610 is fixed to the top surface of the first plate 120; the fifth slider 620 is slidably connected to the second track 610; the second plate 630 is fixed to the top surface of the fifth slider 620, and a telescopic rod 640 is rotatably connected to the top surface of the second plate 630; the third track 660 is fixed to the bottom surface of the wire mesh 140, and a sixth slider 650 is slidably connected to the third track 660, which is rotatably connected to the telescopic rod 640; the two ends of the guide plate are respectively provided with a first support column 670 and a second support column 680 supported on the first plate 120, and a bolt 690 is threadedly connected to the second support column 680, which is threadedly connected to one end of the third track 660; the bottom surface of the fourth slider 510 is provided with an elastic part 540, and the bottom end of the elastic part 540 is fixed to the second plate 630.

[0062] Specifically, the top edge of the guide plate has a slope, which cooperates with the bottom surface of the slider 510. When the slider 510 slides toward the support column 670, the slope lifts the slider 510 to a certain height, so that the antistatic bar 520 and the pressure roller 530 are located above the substrate 130, thereby avoiding the antistatic bar 520 and the pressure roller 530 from affecting the film formation.

[0063] By controlling the bolt 690, the position of the guide plate on the two support columns can be changed, thereby changing the height of the slider 4 510 above the substrate 130 to adjust according to the film thickness.

[0064] The arrangement of tracks 2 (610) and 3 (660) provides a stable sliding path for sliders 5 (620) and 6 (650), ensuring the parallelism and relative position accuracy of the screen 140 and substrate 130 during movement. The rotatable connection of the telescopic rod 640 allows the screen 140 to smoothly drive the guide mechanism 600 as it moves away from the substrate 130, thereby driving the processing mechanism 500 to process the film layer.

[0065] A method for electrostatic film formation in solid-state batteries includes the following steps:

[0066] S1: Introduce the powder into the feed hopper 430;

[0067] S2: Start the electrostatic generator to apply an electrostatic field between the screen 140 and the substrate 130 to provide power for the directional movement of the powder.

[0068] S3: Control the slide block 420 to slide along the track 410. The scraper 440 at its bottom evenly spreads the electrode powder flowing from the feed hopper 430 onto the wire mesh 140. During this process, the regularly arranged partitions 450 on the inner wall of the feed hopper 430 further disperse the powder, making it flow out of the outlet more evenly. At the same time, the roller 460 rotates, driving the slider 431 to move up and down reciprocally through the swing mechanism, which stirs the electrode powder in the feed hopper 430 and prevents the powder from clumping or accumulating unevenly. In addition, the swing mechanism also drives the slider 441 to move linearly, controlling the movement of the scraper 440 to open and close the outlet at the bottom of the slide block 420, thereby adjusting the amount of powder spread.

[0069] S4: Under the action of a high voltage electrostatic field, the electrode powder is directionally adsorbed onto the substrate 130 and begins to form a film.

[0070] S5: After film formation is complete, when the screen 140 moves away from the substrate 130, the guide mechanism 600 drives the slider 510 to move, causing the antistatic bar 520 and the pressure roller 530 to move synchronously. The antistatic bar 520 generates a large number of positive and negative ions through high-voltage corona discharge, eliminating residual charges on the surface of the solid-state battery and preventing electrostatic interference with subsequent film formation. The pressure roller 530 uniformly presses the solid-state battery film layer during rotation, making the film layer smoother and denser, improving its consistency and stability. When the slider 510 slides towards the support column 670, the inclined surface of the top edge of the guide plate lifts the slider 510 to a certain height, positioning the antistatic bar 520 and the pressure roller 530 above the substrate 130 to avoid affecting film formation. By adjusting the bolt 690, the position of the guide plate on the two support columns can be changed, thereby adjusting the height of the slider 510 above the substrate 130 to accommodate different film thicknesses.

[0071] S7: After the pretreatment of the film is completed, turn off the electrostatic generator, take out the substrate 130 with the film layer, and carry out subsequent solid-state battery assembly and other processes.

[0072] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A solid-state battery electrostatic film forming machine, comprising a base (100), a plate (120) disposed on the base (100), a substrate (130) disposed on the plate (120), an electrostatic generator disposed inside the base (100), and a wire mesh (140) disposed on the base (100), characterized in that, A spraying mechanism (400) is provided on the top of the screen (140). The electrostatic generator applies an electrostatic field between the screen (140) and the substrate (130). The spraying mechanism (400) is moved to guide the raw material powder to the screen (140). The raw material powder is oriented and implanted into the surface of the substrate (130) under the drive of the electric field. The substrate (130) supports and forms a film layer. A guiding mechanism (600) is provided between the screen (140) and the substrate (130). A processing mechanism (500) is provided on the guiding mechanism (600). During the process of the screen (140) moving away from the substrate (130), the screen (140) drives the guiding mechanism (600) to move on the plate (120), thereby driving the processing mechanism (500) to perform electrostatic elimination treatment on the film layer. The spraying mechanism (400) includes: Track 1 (410) is disposed on top of the wire mesh (140); Slide three (420), which slides on track one (410), and a scraper (440) is provided at the bottom of slide three (420). A feeding bin (430) is mounted on the slide block three (420). Two sliders (431) are fixed to both sides of the feeding bin (430). The sliders (431) are slidably connected to the slide block three (420). A roller (460) is rotatably connected inside the slide block three (420). The roller (460) is meshed with the track one (410). One end of the roller (460) is connected to a swing mechanism. When the roller (460) rotates, it transmits its rotational force to the swing mechanism. Driven by the oscillation mechanism, the second slider (431) is driven to reciprocate in the up and down direction. Both ends of the scraper (440) are fixed with third sliders (441). The third slider (441) is slidably connected to the first plate (120). The third slider (441) is provided with a groove that cooperates with the oscillation mechanism. Through the groove that cooperates with the oscillation mechanism, the third slider (441) generates linear motion when subjected to rotational compression, driving the scraper (440) to move, thereby opening and closing the discharge port at the bottom of the slide block (420). The oscillation mechanism includes: An eccentric wheel (710) is connected to the roller (460) via a shaft. A connecting rod (720) is rotatably connected to the eccentric wheel (710); A spring (730) is disposed inside the slide block three (420), and the top end of the spring (730) is fixedly connected to the slider two (431).

2. The solid-state battery electrostatic film forming machine according to claim 1, characterized in that: The inner wall of the feed hopper (430) has a number of partitions (450) arranged regularly.

3. A solid-state battery electrostatic film forming machine according to any one of claims 1-2, characterized in that: The processing unit (500) includes: Slider four (510), which is connected to the guide mechanism (600); An antistatic bar (520) is disposed on the slider four (510); Pressure roller (530), which is rotatably connected to slider four (510).

4. The solid-state battery electrostatic film forming machine according to claim 3, characterized in that: The guiding mechanism (600) includes: Track 2 (610), which is fixed to the top surface of plate 1 (120); Slider five (620) is slidably connected to track two (610); Plate 2 (630) is fixed to the top surface of slider 5 (620), and a telescopic rod (640) is rotatably connected to the top surface of plate 2 (630). Track 3 (660) is fixed to the bottom surface of the wire mesh (140), and slider 6 (650) is slidably connected to track 3 (660). Slider 6 (650) is rotatably connected to the telescopic rod (640). The guide plate has a support column 1 (670) and a support column 2 (680) respectively provided at both ends of the guide plate 1 (120) and supported on the plate body 1 (120). The support column 2 (680) is threaded with a bolt (690), and the bolt (690) is threaded to one end of the track 3 (660). The bottom surface of the slider 4 (510) is provided with an elastic part (540), and the bottom end of the elastic part (540) is fixed to the plate body 2 (630).

5. A solid-state battery electrostatic film forming machine according to claim 4, characterized in that: A fine-tuning platform (200) is provided between each of the bases (100) of the plate body (120), and the fine-tuning platform (200) includes: A lifting frame (210) is threaded with a screw rod (240), and a top plate (220) is fixed to the top of the lifting frame (210). Slider 1 (230), which is slidably connected to the lifting frame (210), and screw 1 (240) is threadedly connected to the screw rod 1 (240); Guide rail 1 (250) is fixed to the top of the top plate (220). A slide block 1 (260) is slidably connected to the guide rail 1 (250). A screw 2 (270) is rotatably connected to the guide rail 1 (250). The screw 2 (270) is threadedly connected to the slide block 1 (260). Guide rail 2 (280) is fixed to the top of slide block 1 (260). Slide block 2 (291) is slidably connected to guide rail 2 (280). Screw 3 (290) is rotatably connected to guide rail 2 (280). Screw 3 (290) is threadedly connected to slide block 2 (291).

6. A method for electrostatic film formation of a solid-state battery, using the electrostatic film formation machine for a solid-state battery as described in claim 1, characterized in that: Includes the following steps: The spraying mechanism (400) is moved to guide the raw material powder onto the surface of the wire mesh (140); When the electrostatic generator is working, the wire mesh (140) and the substrate (130) generate static electricity. The raw material powder is oriented and implanted into the surface of the substrate (130) under the drive of the electric field, and is supported by the substrate (130) to form a film layer.

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