Preparation device and preparation method of composite electrolyte structure for solid-state battery
By designing a composite electrolyte structure preparation device, the problems of uneven filler dispersion and inaccurate detection were solved, the comprehensive performance and detection accuracy of the electrolyte membrane were improved, and uniform dispersion of the filler and stable clamping of the membrane were achieved.
Patent Information
- Application Number
- CN202511032004.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-25
- Publication Date
- 2025-10-10
AI Technical Summary
During the preparation of composite solid electrolytes, uneven filler dispersion and easy damage to the finished membrane during performance testing lead to uneven ion conductivity and inaccurate test results.
A device for preparing composite electrolyte structures for solid-state batteries was designed, including a clamping mechanism, a limiting mechanism, and a detection mechanism. Flexible clamping and precise positioning were achieved through the cooperation of the clamping plate and the spring. Combined with mechanical stirring and ultrasonic treatment, uniform dispersion of the filler and detection accuracy were ensured.
It achieves highly uniform dispersion of fillers in the polymer matrix, improves the ionic conductivity and mechanical properties of the electrolyte membrane, ensures the accuracy and repeatability of detection, and avoids membrane damage.
Smart Images
Figure CN120767385A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of solid-state batteries, and in particular to a device for preparing a composite electrolyte structure for a solid-state battery and a preparation method thereof. Background Art
[0002] Solid-state batteries, due to their potential high energy density and high safety, are widely regarded as a key development direction for the next generation of electrochemical energy storage technology. Among the many core components of solid-state batteries, the performance of solid-state electrolytes plays a decisive role. Composite solid-state electrolytes, combining the flexibility of a polymer matrix with the high ionic conductivity of inorganic fillers, offer broad application prospects. However, in the development and application of composite solid-state electrolytes, from microscopic material preparation to macroscopic testing of finished products, a series of technical bottlenecks remain that need to be addressed.
[0003] During the preparation process, the physicochemical properties of inorganic active fillers and polymer matrix materials differ significantly. This leads to a high tendency for filler particles to agglomerate during mixing. Traditional blending methods often struggle to achieve ideal dispersion at the microscopic level. Consequently, the resulting electrolyte membrane can develop "bottleneck" regions with uneven ionic conductivity and weak mechanical properties, directly limiting the overall performance of the battery.
[0004] For the prepared electrolyte sheet, its subsequent performance testing also faces challenges. This type of membrane material is usually extremely thin and has a certain degree of brittleness. When fixing the sample, the clamping force applied by the existing clamping tools is often difficult to accurately control. Excessive stress often causes microcracks or even fractures in the electrolyte sheet, resulting in sample scrapping. On the other hand, even if the sample is not damaged, positioning stability during the test process is also a common problem. Many test equipment lack an effective positioning locking mechanism. When the electrolyte sheet is contacted by the detection probe or the environment vibrates, its position is prone to slight deviation. This uncontrollable deviation will seriously affect the accuracy and repeatability of the test results, and it will bring great obstacles to the accurate evaluation of material properties. Summary of the Invention
[0005] In response to the shortcomings of the existing technology, the present invention provides a device for preparing a composite electrolyte structure for solid-state batteries and a preparation method thereof, which solves the problems of uneven dispersion of fillers in the existing composite solid-state electrolyte preparation process, and easy damage to the membrane and inaccurate results due to inaccurate clamping and positioning during performance testing of the finished membrane.
[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a device for preparing a composite electrolyte structure for a solid-state battery and a preparation method thereof, comprising: A bottom plate, a plurality of foot pads being symmetrically fixedly connected to the lower surface of the bottom plate; A detection mechanism is installed on the upper surface of the bottom plate for detecting the electrolyte sheet; A clamping mechanism is installed on the upper surface of the bottom plate for fixing the electrolyte sheet; The clamping mechanism comprises a plurality of moving plates, the inside of each of the plurality of moving plates is symmetrically provided with a sliding column, one end of each of the plurality of sliding columns is fixedly connected with a clamping plate, the outer wall of each of the plurality of clamping plates is fixedly connected with a protective pad, a second spring is installed between the moving plate and the clamping plate, the second spring is sleeved on the outer wall of the sliding column, the lower surface of the moving plate is installed with a driving assembly, and one side of the clamping plate is provided with an adjusting assembly one. A limiting mechanism is installed on the upper surface of the clamping mechanism for limiting the electrolyte sheet.
[0007] Preferably, the driving assembly comprises a motor and a moving block, the upper surface of each of the plurality of moving blocks is fixedly connected with the lower surface of the moving plate, the lower surface of the moving block is slidably connected with the upper surface of the bottom plate, the outer wall of each of the plurality of motors is fixedly connected with the upper surface of the bottom plate, the output end of the motor is fixedly connected with a screw rod, the outer wall of the screw rod is threadedly connected with the inside of the moving block, and one end of each of the plurality of screw rods is rotatably connected with a fixed block, and the fixed block is fixedly connected with the upper surface of the bottom plate.
[0008] Preferably, a first spring is arranged between the moving block and the fixed block, and the first spring is sleeved on the outer wall of the screw rod.
[0009] Preferably, the adjusting assembly one comprises a limiting frame, one end of each of the plurality of limiting frames is fixedly connected with the outer wall of the clamping plate, the lower surface of the limiting frame is slidably connected with the upper surface of the moving plate, the inner wall of the limiting frame is slidably connected with a second screw, the outer wall of each of the plurality of second screws is threadedly connected with the inside of the moving plate, the lower surface of the second screw is slidably connected with a gasket, and the lower surface of the gasket is slidably connected with the upper surface of the limiting frame.
[0010] Preferably, the detection mechanism comprises a stand, the lower surface of each of the plurality of stands is symmetrically installed on the upper surface of the bottom plate, the upper surface of each of the plurality of stands is fixedly connected with a top plate, the inside of the top plate is fixedly connected with an air cylinder, the output end of the air cylinder is fixedly connected with a detection device, the lower surface of the top plate is fixedly connected with a triangular plate, and the outer wall of the triangular plate is fixedly connected with the outer wall of the stand.
[0011] Preferably, the limiting mechanism comprises a sliding strip, the outer wall of the sliding strip is slidably connected with the inside of the clamping plate, the upper surface of the sliding strip is fixedly connected with a limiting plate, the lower surface of the limiting plate is fixedly connected with an anti-skid pad, and the outer wall of the limiting plate is provided with an adjusting assembly two.
[0012] Preferably, the second adjustment component includes a movable frame, the outer wall of the movable frame is fixedly connected to the outer wall of the limit plate, the outer wall of the movable frame is slidably connected to both sides of the outer wall of the clamping plate, the interior of the movable frame is slidably connected with a first bolt, the outer wall of the first bolt is threadedly connected to the interior of the clamping plate, the outer wall of one end of the first bolt is fixedly connected to a fixing ring, the outer wall of the fixing ring is fixedly connected to a knob, and the outer wall of the knob is slidably connected to the outer wall of the movable frame.
[0013] Preferably, slideways are symmetrically installed on the upper surface of the base plate, and sliders are slidably connected inside the slideways, and the upper surfaces of a plurality of the sliders are fixedly connected to the lower surface of the splint.
[0014] A method for using a composite electrolyte structure preparation device for a solid-state battery, comprising the following steps: After the electrolyte sheet obtained through the pressing and cooling process is naturally cooled to a temperature consistent with room temperature, the electrolyte sheet is placed on the bottom plate 1, and the motor is started to rotate the screw clockwise, so that the moving block moves on the bottom plate through the thread, and drives the moving plate to move, so that the sliding column of the moving plate causes the clamping plate to push the protective pad to move and clamp the electrolyte sheet. When the clamping plate contacts the electrolyte sheet, the second spring on one side of the clamping plate effectively relieves the clamping force and makes the limit frame slide on the moving plate; When the electrolyte sheet is firmly clamped, the second bolt is rotated to push the gasket into contact with the limit frame, and the limit frame is fixed, thereby fixing the position of the clamping plate; Then, by pushing the limit plate, the slide bar is driven to slide in the clamping plate, and the movement of the limit plate drives the anti-slip pad to move, so that the anti-slip pad contacts the electrolyte sheet. When the limit plate moves, the movable frame is driven to slide on the clamping plate. By turning the knob, the fixing ring is driven to rotate the triangular plate, and the knob and the fixing ring are brought into contact with the movable frame through the thread, so that the movable frame and the limit plate are fixed, thereby limiting the electrolyte sheet. The detection device is pushed to move by starting the cylinder so that the detection device comes into contact with the electrolyte sheet, thereby detecting the electrolyte sheet.
[0015] A method for preparing a composite electrolyte structure for a solid-state battery comprises the following steps: S1. Material preparation: Prepare, by mass, 100 parts of a polymer matrix material, 10-50 parts of an inorganic active filler, and 15-30 parts of a lithium salt; wherein the polymer matrix material is polyethylene oxide, the inorganic active filler is LLZO, and the lithium salt is lithium bis(trifluoromethanesulfonyl)imide; S2. Mixing: adding the polymer matrix material, the inorganic active filler and the lithium salt to a solvent, mechanically stirring for 2-4 hours at a temperature of 25-40° C., and then ultrasonically treating for 30-60 minutes to form a uniform slurry; S3, film casting: pouring the uniform slurry into a mold and forming a wet film with a thickness of 20-50 μm by doctor blade coating; S4, curing: placing the wet film in a vacuum oven and vacuum drying it at a temperature of 50-70° C. for 8-12 hours to remove the solvent to obtain a solid composite electrolyte membrane; S5, cutting: peeling the solid composite electrolyte membrane from the mold and cutting it into a preset size to obtain the composite electrolyte structure; S6. Testing and characterization: Perform various performance tests on the prepared electrolyte sheets.
[0016] The present invention provides a device for preparing a composite electrolyte structure for a solid-state battery and a preparation method thereof.
[0017] It has the following beneficial effects: 1. The present invention drives the sliding column by the movable plate so that the clamping plate pushes the protective pad to move and clamp the electrolyte sheet. When in contact with the electrolyte sheet, the second spring on one side of the clamping plate effectively relieves the clamping force to prevent the electrolyte sheet from being damaged due to excessive clamping force.
[0018] 2. The present invention moves the clamping plate when in contact with the electrolyte sheet and squeezes the second spring to make the sliding column slide in the movable plate. At the same time, the clamping plate drives the limit frame to move, and the limit frame slides on the movable plate. The gasket is then driven to move by rotating the second bolt, and the gasket and the limit frame are fixed, thereby achieving the effect of fixing the clamping plate, thereby preventing offset and affecting the detection.
[0019] 3. The present invention can effectively promote the highly uniform dispersion of the inorganic active filler in the polymer matrix material through the coordinated control of the mixing method, film casting and curing process, overcoming the technical difficulties of the traditional method in which the filler is prone to agglomeration and leads to poor ion transmission channels; this uniform microstructure constructs a continuous and efficient ion transmission network within the composite electrolyte structure, thereby significantly improving the comprehensive ionic conductivity and mechanical properties of the entire solid composite electrolyte membrane without sacrificing the flexibility of the polymer. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 A perspective view of the present invention; Figure 2 It is a partial structural breakdown diagram of the present invention; Figure 3 For the present invention Figure 2 A magnified view of point A; Figure 4 For the present invention Figure 2 Enlarged view of point B; Figure 5 For the present invention Figure 2 Enlarged view of point C; Figure 6 For the present invention Figure 2 Enlarged view of point D; Figure 7 is a side view of the present invention; Figure 8 A bottom view of the present invention; Figure 9 For the present invention Figure 2 Enlarged view of point E; Figure 10 It is a flow chart of the preparation method of the present invention.
[0021] Among them, 1. bottom plate; 2. column; 3. top plate; 4. cylinder; 5. detection equipment; 6. motor; 7. screw; 8. fixed block; 9. moving block; 10. sliding column; 11. splint; 12. slide bar; 13. limit plate; 14. moving frame; 15. first bolt; 16. limit frame; 17. second bolt; 18. moving plate; 19. slider; 20. slideway; 21. first spring; 22. foot pad; 23. gasket; 24. second spring; 25. triangle plate; 26. knob; 27. fixing ring; 28. protection pad; 29. anti-slip pad. DETAILED DESCRIPTION
[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the present specification. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0023] Please see the attached Figure 1 -Attached Figure 9 The embodiment of the present invention provides a device for preparing a composite electrolyte structure for a solid-state battery, comprising: The bottom plate 1 has a plurality of foot pads 22 symmetrically fixedly connected to the lower surface of the bottom plate 1; Specifically, the stability of the base plate 1 is improved by the foot pad 22 fixed to the bottom of the base plate 1.
[0024] A detection mechanism, mounted on the upper surface of the base plate 1, for detecting the electrolyte sheet; the detection mechanism includes columns 2, the lower surfaces of multiple columns 2 being symmetrically mounted on the upper surface of the base plate 1, the upper surfaces of multiple columns 2 being fixedly connected to a top plate 3, the interior of the top plate 3 being fixedly connected to a cylinder 4, the output end of the cylinder 4 being fixedly connected to a detection device 5, the lower surface of the top plate 3 being fixedly connected to a triangular plate 25, the outer wall of the triangular plate 25 being fixedly connected to the outer wall of the column 2; Specifically, multiple columns 2 are symmetrically fixed on the base plate 1 and fixed to the top plate 3 through a triangular plate 25, which effectively increases the structural stability between the columns 2 and the top plate 3. By starting the cylinder 4, the detection device 5 is pushed to move, so that the detection device 5 contacts the electrolyte sheet, thereby detecting the electrolyte sheet.
[0025] A clamping mechanism is installed on the upper surface of the base plate 1 for fixing the electrolyte sheet; the clamping mechanism includes a plurality of movable plates 18, the interiors of the plurality of movable plates 18 are symmetrically provided with sliding columns 10, one end of the plurality of sliding columns 10 are fixedly connected to a clamping plate 11, the outer walls of the plurality of clamping plates 11 are fixedly connected to a protective pad 28, a second spring 24 is installed between the movable plate 18 and the clamping plate 11, the second spring 24 is sleeved on the outer wall of the sliding column 10, a driving assembly is installed on the lower surface of the movable plate 18, and an adjusting assembly 1 is provided on one side of the clamping plate 11; the driving assembly includes a motor 6 and a movable block 9, the upper surfaces of the plurality of movable blocks 9 are respectively fixedly connected to the lower surface of the movable plate 18, the lower surface of the movable block 9 is slidably connected to the upper surface of the base plate 1, and the plurality of electric The outer wall of the machine 6 is symmetrically fixedly connected to the upper surface of the base plate 1, the output end of the motor 6 is fixedly connected to the screw 7, the outer wall of the screw 7 is threadedly connected to the inside of the moving block 9, and one end of the multiple screws 7 is rotatably connected to the fixed block 8, and the fixed block 8 is fixedly connected to the upper surface of the base plate 1; the adjustment component 1 includes a limit frame 16, one end of the multiple limit frames 16 are respectively fixedly connected to the outer wall of the clamping plate 11, the lower surface of the limit frame 16 is slidably connected to the upper surface of the moving plate 18, the inner wall of the limit frame 16 is slidably connected to the second bolt 17, the outer walls of the multiple second bolts 17 are respectively threadedly connected to the inside of the moving plate 18, the lower surface of the second bolt 17 is slidably connected to the gasket 23, and the lower surface of the gasket 23 is slidably connected to the upper surface of the limit frame 16.
[0026] Specifically, the electrolyte sheet is placed on the base plate 1, and the motor 6 is started to make the screw 7 rotate clockwise, so that the movable block 9 moves on the base plate 1 through the thread, and drives the movable plate 18 to move, so that the movable plate 18 drives the sliding column 10 so that the clamping plate 11 pushes the protective pad 28 to move and clamp the electrolyte sheet. When in contact with the electrolyte sheet, the second spring 24 on one side of the clamping plate 11 effectively relieves the clamping force, and the clamping plate 11 moves when in contact with the electrolyte sheet and the second spring 24 is squeezed to make the sliding column 10 slide in the movable plate 18, and at the same time, the clamping plate 11 drives the limit frame 16 to move, so that the limit frame 16 slides on the movable plate 18, and then the gasket 23 is driven to move by rotating the second bolt 17, so that the gasket 23 contacts the limit frame 16, thereby fixing the limit frame 16, thereby achieving the effect of fixing the clamping plate 11.
[0027] A first spring 21 is provided between the moving block 9 and the fixed block 8. The first spring 21 is sleeved on the outer wall of the screw 7. The limiting mechanism is mounted on the upper surface of the clamping mechanism and is used to limit the electrolyte sheet. The limiting mechanism includes a slide bar 12, the outer wall of which is slidably connected to the interior of the clamping plate 11. The upper surface of the slide bar 12 is fixedly connected to the limiting plate 13, the lower surface of the limiting plate 13 is fixedly connected to the anti-slip pad 29, and the outer wall of the limiting plate 13 is provided with an adjustment component 2. The adjustment component 2 includes a moving frame 14, the outer wall of the moving frame 14 is fixedly connected to the outer wall of the limiting plate 13, and the outer wall of the moving frame 14 is slidably connected to both sides of the outer wall of the clamping plate 11. The interior of the moving frame 14 is slidably connected to a first bolt 15, the outer wall of the first bolt 15 is threadedly connected to the interior of the clamping plate 11, and the outer wall of one end of the first bolt 15 is fixedly connected to a fixing ring 27. The outer wall of the fixing ring 27 is fixedly connected to a knob 26, and the outer wall of the knob 26 is slidably connected to the outer wall of the moving frame 14.
[0028] Specifically, the slide bar 12 is driven to slide in the splint 11 by pushing the limit plate 13, and the movement of the limit plate 13 drives the anti-slip pad 29 to move, so that the anti-slip pad 29 contacts the electrolyte sheet. When the limit plate 13 moves, the movable frame 14 is driven to slide on the splint 11, and the fixing ring 27 is driven to rotate the knob 26 to rotate the triangle plate 25, and the knob 26 and the fixing ring 27 are brought into contact with the movable frame 14 through the thread, so that the movable frame 14 and the limit plate 13 are fixed, thereby limiting the electrolyte sheet.
[0029] Slideways 20 are symmetrically mounted on the upper surface of the base plate 1 . Slide blocks 19 are slidably connected to the interior of the slideways 20 . The upper surfaces of the plurality of slide blocks 19 are fixedly connected to the lower surface of the clamping plate 11 .
[0030] Specifically, the movement of the clamping plate 11 drives the slider 19 to move, so that the slider 19 slides in the slideway 20 to prevent its position from being offset during the movement.
[0031] Please see the attached Figure 10 , a method for preparing a composite electrolyte structure for a solid-state battery, comprising the following steps; S1. Material preparation: Prepare 100 parts by mass of a polymer matrix material, 10-50 parts by mass of an inorganic active filler, and 15-30 parts by mass of a lithium salt; wherein the polymer matrix material is polyethylene oxide, the inorganic active filler is LLZO, and the lithium salt is lithium bis(trifluoromethanesulfonyl)imide; S2. Mixing: Add the polymer matrix material, inorganic active filler and lithium salt to the solvent, mechanically stir for 2-4 hours at a temperature of 25-40° C., and then perform ultrasonic treatment for 30-60 minutes to form a uniform slurry; S3, film casting: pour the uniform slurry into the mold and form a wet film with a thickness of 20-50μm by doctor blade coating; S4, curing: placing the wet film in a vacuum oven and vacuum drying it at a temperature of 50-70°C for 8-12 hours to remove the solvent to obtain a solid composite electrolyte membrane; S5, cutting: peeling the solid composite electrolyte membrane from the mold and cutting it into a preset size to obtain a composite electrolyte structure; S6. Testing and characterization: Perform various performance tests on the prepared electrolyte sheets.
[0032] Example 1
[0033] S1. Material preparation: Prepare 100 parts of polymer matrix material, 30 parts of inorganic active filler, and 22 parts of lithium salt by mass.
[0034] Among them, the polymer matrix material is polyethylene oxide (PEO) with a molecular weight of 800,000; the inorganic active filler is lanthanum zirconium titanium oxide (LLZO) ceramic powder with a particle size D50 of 1 μm; and the lithium salt is lithium bis(trifluoromethanesulfonyl)imide (LiTFSI).
[0035] S2, Mixed: The prepared polymer matrix material, inorganic active filler and lithium salt are added together into a sufficient amount of acetonitrile solvent.
[0036] The mixture was mechanically stirred at 700 rpm in a constant temperature water bath at 30°C for 3 hours.
[0037] After stirring, the mixture was subjected to ultrasonic treatment at a power of 400 W for 45 minutes to ensure that the components were evenly dispersed and finally formed a uniform slurry.
[0038] S3, film casting: The homogeneous slurry was transferred to a knife coater and poured evenly onto a flat mold.
[0039] The equipment was started and coating was performed at a doctor blade speed of 8 mm / s to form a wet film with a thickness of 35 μm.
[0040] S4. Curing: The mold with the wet film was quickly moved into a vacuum oven.
[0041] The solid composite electrolyte membrane was obtained by vacuum drying for 10 hours at a vacuum degree of -0.09 MPa and a temperature of 60° C. to completely evaporate the acetonitrile solvent and solidify the polymer matrix material into a film.
[0042] S5. Cutting: After the oven cools to room temperature, take out the solid composite electrolyte membrane and carefully peel it off from the mold.
[0043] A dedicated cutting tool is used to cut it into a predetermined circular or square size to obtain the final composite electrolyte structure. Testing shows that the structure has excellent ionic conductivity and mechanical properties.
[0044] Example 2
[0045] S1. Material preparation: Prepare 100 parts of polymer matrix material, 10 parts of inorganic active filler, and 15 parts of lithium salt by mass.
[0046] Among them, the polymer matrix material is polyethylene oxide (PEO) with a molecular weight of 600,000; the inorganic active filler is LLZO with a particle size D50 of 0.5 μm; and the lithium salt is LiTFSI.
[0047] S2, Mixed: The above materials were added into acetonitrile solvent.
[0048] The mixture was mechanically stirred at 600 rpm for 2 hours at a temperature of 25°C.
[0049] Subsequently, the mixture was subjected to ultrasonic treatment at a power of 300 W for 30 minutes to form a uniform slurry.
[0050] S3, film casting: The coating was performed by doctor blade coating at a coating speed of 5 mm / s to form a wet film with a thickness of 20 μm.
[0051] S4. Curing: The wet film was placed in a vacuum oven and vacuum dried for 8 hours at a vacuum degree of no more than -0.09 MPa and a temperature of 50° C. to obtain a solid composite electrolyte membrane.
[0052] S5. Cutting: The solidified solid composite electrolyte membrane is peeled off from the mold and cut into the required size to obtain a composite electrolyte structure. The structure exhibits good flexibility and interfacial compatibility.
[0053] Example 3
[0054] S1. Material preparation: Prepare 100 parts of polymer matrix material, 50 parts of inorganic active filler, and 30 parts of lithium salt by mass.
[0055] Among them, the polymer matrix material is polyethylene oxide (PEO) with a molecular weight of 1 million; the inorganic active filler is LLZO with a particle size D50 of 2 μm; and the lithium salt is LiTFSI.
[0056] S2, Mixed: The above materials were added into acetonitrile solvent.
[0057] The mixture was stirred mechanically at 800 rpm at 40°C for 4 hours.
[0058] Subsequently, the mixture was subjected to ultrasonic treatment at a power of 500 W for 60 minutes to form a uniform slurry.
[0059] S3, film casting: The coating was performed by doctor blade coating at a coating speed of 10 mm / s to form a wet film with a thickness of 50 μm.
[0060] S4. Curing: The wet film was placed in a vacuum oven and vacuum dried for 12 hours at a vacuum degree of no more than -0.09 MPa and a temperature of 70° C. to obtain a solid composite electrolyte membrane.
[0061] S5. Cutting: The cured solid composite electrolyte membrane is peeled from the mold and cut into the desired size to obtain a composite electrolyte structure. This structure exhibits excellent mechanical strength and thermal stability due to its high content of inorganic fillers.
[0062] Working principle: First, the electrolyte sheet obtained through the pressing and cooling process is placed on the bottom plate 1 when it is naturally cooled to a level consistent with room temperature, and the motor 6 is started to make the screw 7 rotate clockwise, so that the moving block 9 moves on the bottom plate 1 through the thread, and drives the moving plate 18 to move, so that the sliding column 10 carried by the moving plate 18 makes the clamping plate 11 push the protective pad 28 to move and clamp the electrolyte sheet. When in contact with the electrolyte sheet, the second spring 24 on one side of the clamping plate 11 effectively relieves the clamping force, and when the clamping plate 11 contacts the electrolyte sheet, it moves and the second spring 24 squeezes, so that the sliding column 10 slides in the movable plate 18, and at the same time, the clamping plate 11 drives the limit frame 16 to move, so that the limit frame 16 slides on the movable plate 18, and then the gasket 23 is driven to move by rotating the second bolt 17, so that the gasket 23 contacts the limit frame 16, thereby fixing the limit frame 16, thereby achieving the effect of fixing the clamping plate 11; By pushing the limit plate 13, the slide bar 12 is driven to slide in the clamping plate 11, and the movement of the limit plate 13 drives the anti-slip pad 29 to move, so that the anti-slip pad 29 contacts the electrolyte sheet. When the limit plate 13 moves, the movable frame 14 is driven to slide on the clamping plate 11. By turning the knob 26, the fixing ring 27 is driven to rotate the triangular plate 25, and the knob 26 and the fixing ring 27 are brought into contact with the movable frame 14 through the thread, so that the movable frame 14 and the limit plate 13 are fixed, thereby limiting the electrolyte sheet, and by starting the cylinder 4, the detection device 5 is pushed to move, so that the detection device 5 contacts the electrolyte sheet, thereby detecting the electrolyte sheet.
[0063] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.
Claims
1. A device for preparing a composite electrolyte structure for a solid-state battery, characterized in that: include: A bottom plate (1), wherein a plurality of foot pads (22) are symmetrically fixedly connected to the lower surface of the bottom plate (1); A detection mechanism, which is mounted on the upper surface of the base plate (1) and is used to detect the electrolyte sheet; A clamping mechanism, which is mounted on the upper surface of the base plate (1) and is used to fix the electrolyte sheet; The clamping mechanism includes a plurality of movable plates (18), wherein the interiors of the plurality of movable plates (18) are symmetrically provided with sliding columns (10), one ends of the plurality of sliding columns (10) are fixedly connected with a clamping plate (11), and the outer walls of the plurality of clamping plates (11) are fixedly connected with a protective pad (28), a second spring (24) is installed between the movable plate (18) and the clamping plate (11), and the second spring (24) is sleeved on the outer wall of the sliding column (10), a driving component is installed on the lower surface of the movable plate (18), and an adjusting component 1 is provided on one side of the clamping plate (11); The limiting mechanism is installed on the upper surface of the clamping mechanism and is used to limit the electrolyte sheet.
2. The device for preparing a composite electrolyte structure for a solid-state battery according to claim 1, characterized in that: The driving assembly comprises a motor (6) and a moving block (9), the upper surfaces of the plurality of moving blocks (9) are respectively fixedly connected to the lower surface of the moving plate (18), the lower surface of the moving block (9) is slidably connected to the upper surface of the bottom plate (1), the outer walls of the plurality of motors (6) are symmetrically fixedly connected to the upper surface of the bottom plate (1), the output end of the motor (6) is fixedly connected to a screw (7), the outer wall of the screw (7) is threadedly connected to the inside of the moving block (9), one end of the plurality of screws (7) is rotatably connected to a fixed block (8), and the fixed block (8) is fixedly connected to the upper surface of the bottom plate (1).
3. The device for preparing a composite electrolyte structure for a solid-state battery according to claim 2, characterized in that: A first spring (21) is provided between the movable block (9) and the fixed block (8), and the first spring (21) is sleeved on the outer wall of the screw rod (7).
4. The device for preparing a composite electrolyte structure for a solid-state battery according to claim 1, characterized in that: The adjustment component 1 includes a limit frame (16), one end of each of the limit frames (16) is fixedly connected to the outer wall of the clamping plate (11), the lower surface of the limit frame (16) is slidably connected to the upper surface of the movable plate (18), the inner wall of the limit frame (16) is slidably connected to a second bolt (17), the outer walls of each of the second bolts (17) are respectively threadedly connected to the inside of the movable plate (18), the lower surface of the second bolt (17) is slidably connected to a gasket (23), and the lower surface of the gasket (23) is slidably connected to the upper surface of the limit frame (16).
5. The device for preparing a composite electrolyte structure for a solid-state battery according to claim 1, characterized in that: The detection mechanism comprises a column (2), wherein the lower surfaces of the plurality of columns (2) are symmetrically mounted on the upper surface of the base plate (1), the upper surfaces of the plurality of columns (2) are fixedly connected to a top plate (3), the interior of the top plate (3) is fixedly connected to a cylinder (4), the output end of the cylinder (4) is fixedly connected to a detection device (5), the lower surface of the top plate (3) is fixedly connected to a triangular plate (25), and the outer wall of the triangular plate (25) is fixedly connected to the outer wall of the column (2).
6. The device for preparing a composite electrolyte structure for a solid-state battery according to claim 1, characterized in that: The limiting mechanism comprises a slide bar (12), the outer wall of the slide bar (12) is slidably connected to the inside of the clamping plate (11), the upper surface of the slide bar (12) is fixedly connected to the limiting plate (13), the lower surface of the limiting plate (13) is fixedly connected to the anti-slip pad (29), and the outer wall of the limiting plate (13) is provided with an adjustment component 2.
7. The device for preparing a composite electrolyte structure for a solid-state battery according to claim 1, characterized in that: The second adjustment component includes a moving frame (14), the outer wall of the moving frame (14) is fixedly connected to the outer wall of the limit plate (13), the outer wall of the moving frame (14) is slidably connected to both sides of the outer wall of the clamping plate (11), the interior of the moving frame (14) is slidably connected to a first bolt (15), the outer wall of the first bolt (15) is threadedly connected to the interior of the clamping plate (11), one end of the first bolt (15) is fixedly connected to the outer wall of a fixing ring (27), the outer wall of the fixing ring (27) is fixedly connected to a knob (26), and the outer wall of the knob (26) is slidably connected to the outer wall of the moving frame (14).
8. The device for preparing a composite electrolyte structure for a solid-state battery according to claim 1, characterized in that: Slideways (20) are symmetrically mounted on the upper surface of the base plate (1), and sliders (19) are slidably connected inside the slideways (20). The upper surfaces of a plurality of sliders (19) are fixedly connected to the lower surface of the clamping plate (11).
9. A method for using a composite electrolyte structure preparation device for solid-state batteries, applied to a composite electrolyte structure preparation device for solid-state batteries according to any one of claims 1 to 8, characterized in that: The following steps are included: The electrolyte sheet obtained through the pressing and cooling process is placed on the bottom plate 1 after it is naturally cooled to a degree consistent with room temperature, and the motor (6) is started to rotate the screw (7) clockwise, so that the moving block (9) moves on the bottom plate (1) through the thread, and drives the moving plate (18) to move, so that the sliding column (10) carried by the moving plate (18) causes the clamping plate (11) to push the protective pad (28) to move and clamp the electrolyte sheet. When the second spring (24) on one side of the clamping plate (11) contacts the electrolyte sheet, the clamping force is effectively relieved, and the limit frame (16) slides on the moving plate (18); When the electrolyte sheet is clamped firmly, the second bolt (17) is rotated to push the gasket (23) into contact with the limit frame (16), and the limit frame (16) is fixed, thereby fixing the position of the clamping plate (11); Then, the slide bar (12) is driven to slide in the clamping plate (11) by pushing the limiting plate (13), and the anti-skid pad (29) is driven to move by the movement of the limiting plate (13), so that the anti-skid pad (29) contacts the electrolyte sheet. When the limiting plate (13) moves, the movable frame (14) is driven to slide on the clamping plate (11), and the fixing ring (27) is driven to rotate the knob (26) to rotate the triangular plate (25), and the knob (26) and the fixing ring (27) are brought into contact with the movable frame (14) through the thread, thereby fixing the movable frame (14) and the limiting plate (13), thereby limiting the electrolyte sheet. The cylinder (4) is activated to push the detection device (5) to move, so that the detection device (5) comes into contact with the electrolyte sheet, thereby detecting the electrolyte sheet.
10. A method for preparing a composite electrolyte structure for a solid-state battery, applied to a device for preparing a composite electrolyte structure for a solid-state battery according to any one of claims 1 to 8, characterized in that: The following steps are included: S1. Material preparation: Prepare, by mass, 100 parts of a polymer matrix material, 10-50 parts of an inorganic active filler, and 15-30 parts of a lithium salt; wherein the polymer matrix material is polyethylene oxide, the inorganic active filler is LLZO, and the lithium salt is lithium bis(trifluoromethanesulfonyl)imide; S2. Mixing: adding the polymer matrix material, the inorganic active filler and the lithium salt to a solvent, mechanically stirring for 2-4 hours at a temperature of 25-40° C., and then ultrasonically treating for 30-60 minutes to form a uniform slurry; S3, film casting: pouring the uniform slurry into a mold and forming a wet film with a thickness of 20-50 μm by doctor blade coating; S4, curing: placing the wet film in a vacuum oven and vacuum drying it at a temperature of 50-70° C. for 8-12 hours to remove the solvent to obtain a solid composite electrolyte membrane; S5, cutting: peeling the solid composite electrolyte membrane from the mold and cutting it into a preset size to obtain the composite electrolyte structure; S6. Testing and characterization: Perform various performance tests on the prepared electrolyte sheets.