A dry forming device and preparation method for positive and negative electrode materials of solid-state batteries

Abstract

The present invention discloses a dry forming device and preparation method of a positive and negative electrode material of a solid-state battery, wherein the dry forming device of the positive and negative electrode material of a solid-state battery comprises a machine, a roller group, a driving mechanism and an adjusting mechanism; the roller group comprises two rollers, the two rollers are arranged side by side, the two ends of the rollers are respectively movably connected to the machine, and a pressing space is formed between the two rollers; the adjusting mechanism comprises a distance adjustment component, the distance adjustment component is movably arranged between the ends of the two rollers, the distance adjustment component comprises a first driving member and a distance adjustment member, the distance adjustment member has a first inclined surface, the distance adjustment member is movably inserted between the ends of the two rollers, a connecting member is provided on the side of the end of one roller, the connecting member is provided with a second inclined surface, the first inclined surface is abutted against the second inclined surface, and the first driving member drives the distance adjustment member to move to adjust the distance between the two rollers. The present application realizes automatic, rapid and precise adjustment of the gap between the two rollers, with high adjustment efficiency and improved processing effect.

Description

Technical Field

[0001] The present invention relates to the technical field of solid-state battery production, and in particular to a dry-process molding device and a preparation method for positive and negative electrode materials of solid-state batteries. Background Art

[0002] Lithium battery is a primary battery that uses lithium metal or lithium alloy as negative electrode material and non-aqueous electrolyte solution. The pole piece is an important component of lithium battery. The quality of the pole piece directly affects the quality of lithium battery. The manufacturing process of the pole piece mainly includes: mixing, coating, rolling and slitting. In the manufacturing process of lithium battery, the compaction density and compactness have a great influence on the battery performance. Generally speaking, the higher the compactness, the higher the capacity of the battery can be made. The appropriate compaction density can increase the discharge capacity of the battery, reduce the internal resistance, reduce the polarization loss, extend the cycle life of the battery, and improve the utilization rate of lithium battery. Therefore, the calendering of the pole piece is a very important process in the battery manufacturing process. Existing electrode preparation methods include dry electrode, which is to first roll the raw material into a membrane, and then compound it on the foil to make the positive or negative electrode of the battery.

[0003] Existing dry motor calendering equipment has a roller gap adjustment function, which is generally to adjust the position of a single roller to change the gap between the two rollers, or to adjust the gap between the two rollers by manually turning a knob to change the insertion depth of the distance adjusting piece. Such adjustment methods are cumbersome to operate, resulting in low efficiency and low adjustment accuracy, affecting the processing effect. Summary of the invention

[0004] The present invention aims to solve at least one of the problems in the related art to a certain extent. To this end, one of the purposes of the present invention is to provide a dry forming device for solid-state battery positive and negative electrode materials, which is used to automatically and quickly and accurately adjust the gap between two rollers, has high adjustment efficiency, and improves processing effect.

[0005] A solid-state battery positive and negative electrode material dry molding equipment, the solid-state battery positive and negative electrode material dry molding equipment comprising:

[0006] Machine;

[0007] A roller group, wherein the roller group comprises two rollers, the two rollers are arranged side by side, both ends of the rollers are movably connected to the machine platform, and a pressing space is formed between the two rollers;

[0008] A driving mechanism, the driving mechanism is drivingly connected to one end of the roller to drive the roller to rotate;

[0009] An adjusting mechanism is arranged on the machine platform, the adjusting mechanism includes a distance adjusting component, the distance adjusting component is movably arranged between the ends of the two rollers, the distance adjusting component includes a first driving member and a distance adjusting member, the first driving member is connected to the distance adjusting member, the distance adjusting member has a first inclined surface, the distance adjusting member is movably inserted between the ends of the two rollers, a connecting member is provided on the side surface of the end of one of the rollers, the connecting member is provided with a second inclined surface, the first inclined surface abuts against the second inclined surface, the first driving member drives the distance adjusting member to move, changes the abutting area of ​​the first inclined surface and the second inclined surface to adjust the distance between the two rollers.

[0010] Furthermore, the adjustment mechanism also includes a first reducer and a screw lifter, the first driving member is drivingly connected to the first reducer, the driving end of the first reducer is drivingly connected to the screw lifter, the lifter is drivingly connected to the distance adjusting member, the first driving member drives the first reducer and the lifter to drive the screw and the distance adjusting member to move, and the distance adjusting member moves to adjust the distance between the two rollers.

[0011] Furthermore, the distance adjusting member is provided with an oil groove on the first inclined surface, the oil groove is extended along the extension direction of the distance adjusting member, an oil hole is provided at the bottom of the oil groove, and an oil inlet hole is provided on a side surface of the distance adjusting member adjacent to the first inclined surface, the oil inlet hole is connected to the oil hole, and the oil inlet hole is used to input lubricating oil.

[0012] Furthermore, the oil passage groove is also provided with a plurality of buffer blocks protruding therefrom, the plurality of buffer blocks are arranged at intervals, and the buffer blocks are extended along a direction perpendicular to the extension direction of the distance adjusting member.

[0013] Furthermore, there are multiple roller groups, and the multiple roller groups are arranged side by side. The roller diameter of the roller group close to the discharge direction is larger than the roller diameters of other roller groups.

[0014] Furthermore, the gaps between the rollers of the roller group arranged side by side gradually decrease along the transmission direction.

[0015] Furthermore, the adjustment mechanism also includes a plurality of second driving members, which are respectively arranged on both sides of the extension direction of the plurality of rollers, and the plurality of second driving members respectively drive and press the end of the first or last roller.

[0016] Furthermore, the machine is also provided with a slide rail, which is extended along the arrangement direction of the plurality of rollers, and a slider is provided on the end side of the roller, and the slider is slidably connected to the slide rail to drive the roller to move along the extension direction of the slide rail.

[0017] Furthermore, the solid-state battery positive and negative electrode material dry forming equipment also includes a heating mechanism, which includes a joint and a connecting pipe. A nozzle is provided inside the roller, and the joint is connected to the other end of the roller. One end of the joint is connected to the connecting pipe, and the other end is connected to the nozzle. The nozzle is used to transport heat transfer liquid to the inside of the roller to heat the inside of the roller.

[0018] Furthermore, the heating mechanism also includes a connecting rod, and both ends of the connecting rod are respectively connected to the joints of two adjacent rollers to fix the positions of the joints.

[0019] Further, the driving mechanism includes a third driving member, a second reducer and a transmission shaft, the third driving member is drivingly connected to the second reducer, the driving end of the second reducer is drivingly connected to one end of the transmission shaft, and the other end of the transmission shaft is connected to one end of the roller;

[0020] A method for preparing a dry-process forming device for positive and negative electrode materials of a solid-state battery, using the dry-process forming device for positive and negative electrode materials of a solid-state battery as described above, wherein the dry-process forming device for positive and negative electrode materials of a solid-state battery further comprises a heating mechanism, a cooling system, a heating system, a hydraulic system and a lubrication system, wherein the cooling system is connected to the heating system, the hydraulic system and the lubrication system, the heating system is connected to the heating mechanism, and the hydraulic system and the lubrication system are both connected to the regulating mechanism, and the method for preparing the dry-process forming device for positive and negative electrode materials of a solid-state battery comprises the following steps:

[0021] Turning on the lubrication system, the hydraulic system, the heating system and the cooling system;

[0022] Open the adjustment mechanism to adjust the distance between the two rollers;

[0023] Turning on the driving mechanism and adjusting the rotation speed of the roller;

[0024] Turning on the heating mechanism to heat the roller;

[0025] Place the test strip into the roller for calendering test. If the test is qualified, start adding raw materials for product calendering.

[0026] Furthermore, the distance between the two rollers ranges from 0.08 mm to 0.2 mm.

[0027] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art: the present application is provided with a driving mechanism to drive the roller to rotate, and an adjusting mechanism is provided, the adjusting mechanism includes a first driving member and a distance adjusting member, the first driving member drives the distance adjusting member to move to adjust the distance between the two rollers, the first driving member is driven in an automated manner, so as to realize fast and accurate adjustment of the position of the distance adjusting member without excessive manual intervention, thereby improving the degree of automation of the adjustment, quickly and accurately adjusting the gap between the two rollers, having high adjustment efficiency, and improving the processing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0030] In the attached figure:

[0031] Figure 1 This is a structural schematic diagram of an embodiment of a dry-process molding device for positive and negative electrode materials of a solid-state battery of the present application;

[0032] Figure 2 This is a schematic diagram of the partial structure of the dry-process molding equipment for the positive and negative electrode materials of the solid-state battery of this application;

[0033] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0034] Figure 4 This is a top view of the dry forming equipment for the positive and negative electrode materials of the solid-state battery of this application;

[0035] Figure 5 This is a front view of the dry forming equipment for the positive and negative electrode materials of the solid-state battery of this application;

[0036] Figure 6 This is a schematic diagram of the coordination structure of the adjustment mechanism and two rollers in the dry forming equipment for the positive and negative electrode materials of solid-state batteries in this application;

[0037] Figure 7 This is a schematic diagram of the structure of the adjustment mechanism in the dry forming equipment for the positive and negative electrode materials of the solid-state battery of this application;

[0038] Figure 8 This is a schematic diagram of the structure of multiple rollers conveying in the dry forming equipment of the positive and negative electrode materials of the solid-state battery in this application.

[0039] 1. Dry forming equipment for positive and negative electrode materials of solid-state batteries; 10. Machine table; 11. Slide rail; 20. Roller; 21. Second inclined surface; 23. Slider; 30. Driving mechanism; 31. Third driving member; 33. Second reducer; 35. Transmission shaft; 40. Adjusting mechanism; 41. Distance adjustment component; 411. First driving member; 412. Distance adjustment member; 4121. First inclined surface; 4123. Oil groove; 4125. Oil hole; 4126. Oil inlet hole; 4127. Buffer block; 413. First reducer; 414. Screw lift; 43. Second driving member; 50. Heating mechanism; 51. Joint; 53. Connecting rod; 60. Cooling system; 70. Heating system; 80. Hydraulic system; 90. Lubrication system. DETAILED DESCRIPTION

[0040] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0041] Example 1

[0042] like Figure 1 - Figure 8 As shown, the present application provides a solid-state battery positive and negative electrode material dry forming device 1, comprising:

[0043] Machine 10;

[0044] A roller group, the roller group includes two rollers 20, the two rollers 20 are arranged side by side, both ends of the rollers 20 are movably connected to the machine table 10, and a pressing space is formed between the two rollers 20;

[0045] A driving mechanism 30, the driving mechanism 30 is drivingly connected to one end of the roller 20 to drive the roller 20 to rotate;

[0046] The adjusting mechanism 40 is arranged on the machine 10. The adjusting mechanism 40 includes a distance adjusting component 41. The distance adjusting component 41 is movably arranged between the ends of two adjacent rollers 20. The distance adjusting component 41 includes a first driving member 411 and a distance adjusting member 412. The first driving member 411 and the distance adjusting member 412 are connected. The distance adjusting member 412 has a first inclined surface 4121. The distance adjusting member 412 is movably inserted between the ends of the two rollers 20. A connecting member is provided on the side surface of the end of one roller 20. The connecting member is provided with a second inclined surface 21. The first inclined surface 4121 abuts against the second inclined surface 21. The first driving member 411 drives the distance adjusting member 412 to move, and changes the abutting area between the first inclined surface 4121 and the second inclined surface 21 to adjust the distance between the two rollers 20.

[0047] The design of machine 10 has been carefully optimized to meet the needs of efficient and stable production.

[0048] The roller group includes two rollers 20, which are arranged side by side and are firmly connected to the machine 10 at both ends through a movable connection. A pressing space is formed between the two rollers 20 to ensure that the material is evenly processed during the pressing process. The specific working principle is: the two rollers 20 are arranged side by side on the machine 10. It can be understood that if Figure 8 As shown, the number of roller groups can also be multiple, and multiple roller groups are also arranged side by side. The rollers 20 are grouped in pairs, and the two rollers 20 in the roller group rotate in opposite directions, that is, the first roller 20 rotates clockwise, and the second roller 20 rotates counterclockwise. This arrangement is repeated, and the first roller 20 of the second group rotates clockwise, and the second roller 20 rotates counterclockwise, and so on. After the powder is put into the middle of the two rollers of the first group, the powder will form a square film under the rolling action of the two rollers, and will be driven to the next group of rollers 20 by rotation. After multiple groups of repeated rolling and calendering, the pole piece is output from the last roller 20, and the end of the last roller 20 can be provided with a winding mechanism for winding. The gap sizes of different roller groups can be consistent, that is, the same diameter is repeatedly calendered; or they can be set to gradually decrease, that is, multiple roller groups decrease in diameter from the direction of feed to discharge, and the divided materials are progressively calendered through multiple roller groups to achieve a gradual calendering effect.

[0049] The driving mechanism 30 drives one end of the roller 20 to rotate through precise control, ensuring that the roller 20 maintains a stable speed and power output during the pressing process. It is understandable that the driving mechanism 30 can be one or more. When there are more than one driving mechanism 30, one driving mechanism 30 can be set to correspond to one roller 20 to achieve one-to-one power output, and different rollers 20 can be rotated separately, so that different rollers 20 can be set in different rotation directions.

[0050] The adjustment mechanism 40 includes a distance adjustment component 41, which is movably arranged between the ends of two adjacent rollers 20. The distance adjustment component 41 is composed of a first driving member 411 and a distance adjustment member 412, wherein the distance adjustment member 412 has a first inclined surface 4121. The first driving member 411 drives the distance adjustment member 412 to move, and the contact area between the first inclined surface 4121 and the second inclined surface 21 on the side connecting member of the end of the roller 20 can be changed, thereby achieving precise adjustment of the distance between the rollers 20. The distance adjustment member 412 changes the contact area between the first inclined surface 4121 and the second inclined surface 21 on the side connecting member of the end of the roller 20 by inserting the depth between the ends of the two rollers 20. When inserted, the two rollers 20 can be stretched apart in opposite directions, thereby achieving the effect of changing the size of the gap between the two rollers 20, and thus the thickness of the inter-roller calendering can be changed. And the first driving member 411 can be a servo motor, a brushless DC motor, a stepper motor, etc., preferably a servo motor. The biggest feature of the servo motor is its high precision. It adopts closed-loop control, so its precision is higher than that of a traditional stepper motor. It can convert the command signal into an axis motion with high motion control precision, thereby ensuring high-precision positioning and motion precision, and the response speed of the servo motor is very fast, usually in the millisecond level, so it can accurately control the position and speed of the driven object. This response speed is much faster than that of a traditional DC motor, which can ensure real-time motion control, thereby improving production efficiency. The first driving member 411 is used to electrically drive the distance adjusting member 412 to move. This device realizes precise control of the first driving member 411 through a precise motor control system, and then drives the distance adjusting member 412 to move smoothly and stably on a preset track. A high-performance servo motor is used as the first driving member 411. The motor has the advantages of fast response speed, high positioning accuracy, stable operation, etc., and can ensure the accuracy and stability of the distance adjusting member 412 during movement. Furthermore, two distance adjustment components may be provided at both ends of a roller group, and the two distance adjustment components are respectively provided between the two ends of the two rollers, that is, one roller adjusts the gap between one end of the two rollers. Specifically, the distance adjustment components at both ends are adjusted synchronously, that is, a controller can be electrically connected to the two first driving members at the same time, and the driving time, driving direction, driving current and voltage of the two first driving members can be driven synchronously to ensure that the distances adjusted by the distance adjustment components at both ends are the same, and the overall distance between the two rollers is kept consistent to ensure the overall flatness of the powder calendering.

[0051] It is understandable that the distance adjusting member 412 may be a wedge block or a latch. The distance adjusting member 412 may be made of alloy steel, which has good wear resistance and toughness and a long service life. It may also be made of stainless steel, which has good corrosion resistance and strong wear resistance and a long service life. It may also be made of copper alloy, which has excellent thermal conductivity and corrosion resistance and can maintain stability in high temperature and humid environments.

[0052] Furthermore, the equipment is also provided with a temperature control system, which is arranged on the periphery or inside of the roller 20 and is electrically connected to an external controller. The system monitors and adjusts the temperature of the heat transfer liquid in real time to ensure that the temperature of the roller 20 is stable within the set range and the pressing quality is guaranteed.

[0053] Furthermore, the surface of the roller 20 is specially treated to ensure smoothness and improve wear resistance, thereby optimizing the lamination effect.

[0054] Furthermore, the equipment is also provided with an intelligent detection module, which monitors the key parameters such as the rotation speed, spacing, temperature, etc. of the roller 20 in real time through sensors, and displays the data on the operation panel after intelligent processing, so that the operator can understand the operating status of the equipment.

[0055] Furthermore, the equipment is also provided with an automatic cleaning device. When the equipment is stopped, the automatic cleaning device is started to remove the residue on the surface of the roller 20 by spraying cleaning liquid and rotating the brush head to keep the roller 20 clean.

[0056] Furthermore, the equipment is also equipped with a safety protection system, including a safety fence and an emergency stop button to ensure the safety of the equipment and operators.

[0057] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art: the present application is provided with a driving mechanism 30, which can drive the roller 20 to rotate, and an adjusting mechanism 40 is provided, and the adjusting mechanism 40 includes a first driving member 411 and a distance adjusting member 412. The first driving member 411 drives the distance adjusting member 412 to move to adjust the distance between the two rollers 20. The first driving member 411 is driven in an automated manner, has the function of accurately driving the distance of the distance adjusting member, and can be adjusted quickly without excessive manual intervention, thereby improving the degree of automation of the adjustment, quickly and accurately adjusting the gap between the two rollers 20, having high adjustment efficiency, and improving the processing effect.

[0058] The above embodiment has the problem of insufficient precision because only the first driving member 411 and the distance adjusting member 412 are provided for single-stage driving, and the distance adjusting member 412 and the end side surface of the roller 20 are in contact with each other in two planes. Long-term adjustment friction will cause the inclined surface to be unable to move relatively well, resulting in a decrease in the adjustment accuracy of the distance adjusting member. The above problems can be solved by this embodiment 2.

[0059] Example 2

[0060] like Figure 6 - Figure 7 As shown, the present application provides a solid-state battery positive and negative electrode material dry forming device 1, comprising:

[0061] The adjusting mechanism 40 is arranged on the machine 10. The adjusting mechanism 40 includes a distance adjusting component 41. The distance adjusting component 41 is movably arranged between the ends of two adjacent rollers 20. The distance adjusting component 41 includes a first driving member 411 and a distance adjusting member 412. The first driving member 411 and the distance adjusting member 412 are connected. The distance adjusting member 412 has a first inclined surface 4121. The distance adjusting member 412 is movably inserted between the ends of the two rollers 20. A connecting member is provided on the side surface of the end of one roller 20. The connecting member is provided with a second inclined surface 21. The first inclined surface 4121 abuts against the second inclined surface 21. The first driving member 411 drives the distance adjusting member 412 to move, and changes the abutting area between the first inclined surface 4121 and the second inclined surface 21 to adjust the distance between the two rollers 20.

[0062] Specifically, the distance adjustment component 41 further includes a first speed reducer 413 and a screw lift 414. The first driving member 411 is connected to the first speed reducer 413 by driving, the driving end of the first speed reducer 413 is connected to the screw lift 414 by driving, the screw lift 414 is connected to the distance adjustment member 412 by driving, the first driving member 411 drives the first speed reducer 413 and the screw lift 414 to drive the distance adjustment member 412 to move, and the distance adjustment member 412 moves to adjust the distance between the two rollers 20. It can be understood that the first driving member 411, the first speed reducer 413, the screw lift 414 and the distance adjustment member 412 constitute a three-stage reduction mode, and the roller gap size of two rollers 20 or more rollers 20 is controlled by adjusting the lifting distance of the distance adjustment member 412 in the vertical direction, and the adjustment accuracy can reach micron level, realizing high-precision adjustment of the roller gap.

[0063] In the fine design of the spacing component 41, we also introduced precision sensors and control systems to ensure the precise adjustment of the spacing of the rollers 20. The precision sensor is installed on the spacing member 412, monitors the moving position of the spacing member 412 in real time, and feeds the data back to the control system. The control system accurately controls the speed and direction of the first driving member 411 according to the preset spacing parameters of the rollers 20 and the real-time data fed back by the sensor, thereby achieving precise control of the moving speed and position of the spacing member 412.

[0064] In addition, in order to increase the stability and service life of the pitch-adjusting assembly 41, we selected high-strength and wear-resistant materials to manufacture the pitch-adjusting member 412, the screw lifter 414 and the first reducer 413. These materials not only have excellent mechanical properties, but also can maintain good working conditions under long-term and high-load working conditions, thereby improving the overall performance and reliability of the pitch-adjusting assembly 41.

[0065] In actual operation, the user only needs to input the required roller 20 spacing parameters on the control system interface, and the control system will automatically drive the spacing adjustment component 41 to make corresponding adjustments. This operation method is simple and intuitive, and can be completed without professional technicians, greatly improving work efficiency and convenience.

[0066] Furthermore, the distance adjusting member 412 is located on the first inclined surface 4121 and is recessed with an oil groove 4123. The oil groove 4123 is extended along the extension direction of the distance adjusting member 412. An oil hole 4125 is provided at the bottom of the oil groove 4123. A side surface of the distance adjusting member 412 adjacent to the first inclined surface 4121 is also provided with an oil inlet hole 4126. The oil inlet hole 4126 is connected to the oil hole 4125, and the oil inlet hole 4126 is used to input lubricating oil.

[0067] The first inclined surface 4121 is provided with an oil groove 4123, which is extended along the extension direction of the distance adjusting member 412. The bottom of the oil groove 4123 is provided with an oil hole 4125. The side surface of the distance adjusting member 412 adjacent to the first inclined surface 4121 is also provided with an oil inlet hole 4126, which is connected to the oil hole 4125. The lubricating oil is input from the oil inlet hole 4126 through the oil hole 4125 into the oil groove 4123, forming a complete lubricating oil circulation channel. The design of the oil outlet groove takes into account the uniformity and smoothness of the oil flow, ensuring that the lubricating oil can be evenly distributed in various key parts of the distance adjusting member 412, thereby effectively reducing friction, extending the service life, and achieving the stability of the relative movement of the first inclined surface 4121 and the second inclined surface 21.

[0068] Furthermore, an oil outlet is provided at the end of the oil outlet groove for the lubricating oil to be discharged, so as to form a circulation inside the oil outlet groove 4123. A precise oil outlet control valve is provided at the oil outlet. The control valve can automatically adjust the oil outlet of the lubricating oil according to the working state of the distance adjusting member 412, so as to ensure that the distance adjusting member 412 can be sufficiently lubricated when running at high speed, and can reduce unnecessary waste of lubricating oil when running at low speed or static state.

[0069] During the operation of the distance adjusting member 412, the lubricating oil enters the oil hole 4125 through the oil inlet hole 4126, flows to the oil outlet groove through the oil groove 4123, and finally flows out from the oil outlet, forming a closed-loop lubrication system 90. This system not only ensures the lubrication effect of the distance adjusting member 412, but also improves the utilization rate of the lubricating oil and reduces the maintenance cost.

[0070] At the same time, the design of the distance adjusting member 412 also fully considers the heat dissipation problem. Heat sinks are provided on the first inclined surface 4121 and the bottom surface, which can effectively dissipate the heat generated by the distance adjusting member 412 during operation to prevent the distance adjusting member 412 from being damaged due to overheating. The shape and arrangement of the heat sinks are carefully calculated to ensure the maximum heat dissipation effect.

[0071] Furthermore, the oil passage groove 4123 is also provided with a plurality of buffer blocks 4127 protruding therefrom. The plurality of buffer blocks 4127 are arranged at intervals, and the buffer blocks 4127 are extended along a direction perpendicular to the extension direction of the distance adjusting member 412 .

[0072] The protruding buffer block 4127 of the oil groove 4123 serves to extend the flow path of the lubricating oil, thereby slowing down the flow rate of the lubricating oil and allowing the lubricating oil to more fully contact the first inclined surface 4121 when flowing through the area, thereby enhancing the lubrication effect. In addition, the design of the protruding buffer block 4127 can also absorb the vibration and impact during the operation of the machine to a certain extent, effectively reducing the mechanical wear caused by the vibration and extending the service life of the equipment.

[0073] In addition to the above-mentioned practical functions, the convex buffer block 4127 is also unique in structure. It is made of high-strength, wear-resistant materials and can maintain stable performance under long-term working conditions. At the same time, the shape and size of the convex buffer block 4127 are carefully designed to ensure the smooth flow of lubricating oil and prevent blockage caused by lubricating oil accumulation.

[0074] In practical applications, buffer block 4127 has shown excellent performance. During the operation of various mechanical equipment, it can significantly reduce the failure rate of equipment caused by friction and wear, and improve the reliability and stability of the equipment. At the same time, since the convex buffer block 4127 can effectively absorb vibration and impact, the operating noise of the equipment has also been significantly reduced, creating a more comfortable working environment for the staff.

[0075] Furthermore, there are multiple roller groups, and the roller groups are arranged side by side. The diameter of the roller 20 of the roller group close to the material discharging direction is larger than the diameter of the roller 20 of other roller groups. The diameter of the last roller group is increased so that the diameter of the roller 20 is close to the diameter of the material receiving roll, and the contact surface of the roller 20 is increased. This design may be to better control or guide the material, so that it moves more smoothly to the next processing link, and facilitate the material on the roller 20 to connect with the material receiving roll, reduce the fluctuation and instability factors in the conveying and processing process, and improve the stability of the material unloading roll.

[0076] Furthermore, the gaps between the rollers 20 of the roller groups arranged side by side gradually decrease along the transmission direction. The arrangement of gradually decreasing gaps between the rollers 20 means that the diameters of the roller groups 20 decrease in a stepwise manner from the feeding direction to the discharging direction, and the material is progressively calendered through the roller groups 20 to achieve a gradual calendering effect.

[0077] Example 3

[0078] like Figure 1 - Figure 5 As shown, the present application provides a solid-state battery positive and negative electrode material dry forming device 1, comprising:

[0079] The adjusting mechanism 40 is arranged on the machine 10. The adjusting mechanism 40 includes a distance adjusting component 41. The distance adjusting component 41 is movably arranged between the ends of two adjacent rollers 20. The distance adjusting component 41 includes a first driving member 411 and a distance adjusting member 412. The first driving member 411 and the distance adjusting member 412 are connected. The distance adjusting member 412 has a first inclined surface 4121. The distance adjusting member 412 is movably inserted between the ends of the two rollers 20. A connecting member is provided on the side surface of the end of one roller 20. The connecting member is provided with a second inclined surface 21. The first inclined surface 4121 abuts against the second inclined surface 21. The first driving member 411 drives the distance adjusting member 412 to move, and changes the abutting area between the first inclined surface 4121 and the second inclined surface 21 to adjust the distance between the two rollers 20.

[0080] Furthermore, the adjustment mechanism 40 further includes a plurality of second driving members 43, which are respectively arranged on both sides of the extension direction of the plurality of rollers 20, and the plurality of second driving members 43 respectively drive the end of the first or last roller 20 to be pressed. To achieve the reset of the spacing between the two rollers 20 after adjustment, the second driving member 43 is also used, and the second driving member 43 can be a spring or a cylinder, an oil cylinder, etc. When the spacing adjusting member 412 rises, the second driving members 43 on both sides can provide the relative force of the two rollers 20, that is, automatically achieve the reset of the spacing between the two rollers 20, and maintain the calendering pressure between the two rollers 20.

[0081] Furthermore, the machine 10 is also provided with a slide rail 11, which extends along the arrangement direction of the plurality of rollers 20. A slider 23 is provided on the end side of the roller 20. The slider 23 is slidably connected to the slide rail 11 to drive the roller 20 to move along the extension direction of the slide rail 11.

[0082] In the precise design of the machine 10, the slide rail 11 not only provides a track for the roller 20 to move, but also ensures the stability and accuracy of the roller 20 during the movement through its precise guiding performance. The surface of the slide rail 11 has been specially treated to be smooth and wear-resistant, and can withstand the sliding friction of the roller 20 for a long time, thereby extending the service life of the machine 10. Slide blocks 23 are cleverly installed on the side of the end of each roller 20. These slide blocks 23 are closely matched with the slide rail 11, making the movement of the roller 20 smooth and accurate. The slider 23 uses high-precision bearings inside to ensure the smoothness of the roller 20 during the movement, while also reducing the friction resistance, making the movement of the roller 20 easier. When the position of the roller 20 needs to be adjusted, the distance adjustment member 412 drives the two rollers 20 to move, and the slider 23 will slide on the slide rail 11, driving the roller 20 to move along the extension direction of the slide rail 11. The entire operation process is simple and fast, without the need for complex tools or equipment, which greatly improves work efficiency.

[0083] Furthermore, the machine 10 may also be provided with a locking mechanism for fixing the position of the roller 20 after it moves to a suitable position. The locking mechanism can lock the roller 20 through simple operation, thereby ensuring the stability of the roller 20 during operation.

[0084] Furthermore, the first driving member 411 is a servo motor, which ensures the stable operation of the entire system with its excellent performance and precise control. The servo motor has the characteristics of high responsiveness, high precision and high reliability.

[0085] And / or, the second driving member 43 is a servo cylinder. The servo cylinder combines the advantages of hydraulic transmission and servo control, and can work stably under high pressure and high torque conditions. The servo cylinder realizes the reciprocating motion of the piston through the pressure change of hydraulic oil.

[0086] In this complex and sophisticated system, the first drive element 411 servo motor and the second drive element 43 servo cylinder work together and complement each other. The high precision and fast response of the servo motor ensure the high-speed and stable operation of the system, while the servo cylinder provides strong power support under extreme working conditions such as high torque and high pressure.

[0087] Furthermore, the solid-state battery positive and negative electrode material dry forming equipment 1 also includes a heating mechanism 50, the heating mechanism 50 includes a joint 51 and a connecting pipe, a nozzle is provided inside the roller 20, the joint 51 is connected to the other end of the roller 20, one end of the joint 51 is connected to the connecting pipe, and the other end is connected to the nozzle, and the nozzle is used to transport heat transfer liquid to the inside of the roller 20 to heat the inside of the roller 20.

[0088] The heating mechanism 50 includes a joint 51 and a connecting pipe, and a nozzle is provided inside the roller 20. One end of the joint 51 is connected to the connecting pipe, and the other end is connected to the nozzle, which is used to transport heat transfer liquid to the inside of the roller 20. The heat transfer liquid circulates inside the roller 20 to achieve uniform heating of the roller 20 and ensure temperature control during the pressing process. The heat transfer liquid can be heat transfer oil, silicone oil, glycerin, etc., preferably heat transfer oil, which has high conduction efficiency, long conduction distance, and long service life. Since the heat transfer oil has high efficiency in conducting heat, it can transfer heat over a longer distance under the same temperature rise, which is conducive to the connection between the heat source and the heat load, so that the heating effect of the inside of the roller 20 can be guaranteed. Furthermore, the connecting pipe can also recover the heat transfer liquid inside the roller 20 through the nozzle to achieve the effect of oil inlet and oil return. Furthermore, a bearing may be provided at the end of the roller 20, the joint 51 is connected to the inner ring of the bearing, and the end of the roller 20 is connected to the outer ring of the bearing, so that the joint 51 can be prevented from rotating with the roller 20 and the position of the joint 51 and the connecting pipe can be maintained.

[0089] Furthermore, the heating mechanism 50 further includes a connecting rod 53, the two ends of which are respectively connected to the joints 51 of two adjacent rollers 20 to fix the position of the joints 51. The connecting rod 53 connects the two joints 51 to ensure that the two joints 51 will not shake or move, thereby maintaining the position of the joints 51 and further maintaining the stability of the joints 51 connecting the connecting pipe and the rollers 20.

[0090] In the design of this sophisticated heating mechanism 50, the role of the connecting rod 53 is not limited to fixing the position of the joint 51, but it can also ensure the heat conduction efficiency between the rollers 20. The connecting rod 53 adopts a special heat-conducting material, which has excellent heat-conducting performance while maintaining strength.

[0091] In addition, the design of the connecting rod 53 also fully considers the balance between mechanical stress and thermal stress. During long-term operation, the connecting rod 53 can resist the influence of various stresses and maintain the stability of its shape and function. This not only extends the service life of the heating mechanism 50, but also reduces maintenance costs. In addition to the above functions, the connecting rod 53 also has a certain adjustment function. By adjusting the length or angle of the connecting rod 53, the distance and angle between the rollers 20 can be fine-tuned to meet the needs of different materials and processes. This flexibility makes the heating mechanism 50 more adaptable to a variety of production environments.

[0092] Further, the driving mechanism 30 includes a third driving member 31, a second reducer 33 and a transmission shaft 35, the third driving member 31 is drivingly connected to the second reducer 33, the driving end of the second reducer 33 is drivingly connected to one end of the transmission shaft 35, and the other end of the transmission shaft 35 is connected to one end of the roller 20;

[0093] The second reducer 33 can be a servo motor, a brushless DC motor, a stepper motor, etc., preferably a servo motor. The biggest feature of the servo motor is its high precision. It adopts closed-loop control, so its precision is higher than that of a traditional stepper motor. The importance of the second reducer 33 as a power transmission and deceleration device is self-evident. It can not only convert the high-speed rotation generated by the third drive member 31 into a low-speed high-torque rotation that is more suitable for the rotation of the roller 20, but also effectively reduce the noise and vibration of the system, and improve the stability and service life of the entire system. The transmission shaft 35, as a key component connecting the second reducer 33 and the roller 20, is closely connected to the driving end of the second reducer 33 at one end to ensure seamless power transmission; the other end is connected to one end of the roller 20 to directly convert power into the rotation of the roller 20. Furthermore, the driving mechanism 30 includes a plurality of third driving members 31, a second reducer 33 and a transmission shaft 35. A group of third driving members 31, a second reducer 33 and a transmission shaft 35 are connected to a roller to achieve the effect of driving each roller to rotate individually. The direction and speed of different rollers 20 can be controlled individually. Under normal circumstances, the speed of each roller is the same. If individual control is required, the speed of individual rollers 20 can be increased individually. Such speed control can prevent material breakage or backflow.

[0094] In order to further improve the performance and stability of the drive mechanism 30, a series of advanced materials and processes can also be used. For example, the third drive member 31 and the second reducer 33 are made of high-strength, high-wear-resistant materials to ensure that they can still maintain stable performance under long-term, high-load working conditions; the transmission shaft 35 uses high-precision processing technology to ensure that it is tightly connected with various components without gaps.

[0095] The present invention also proposes a method for preparing a dry-process forming device for positive and negative electrode materials of a solid-state battery, which uses the above-mentioned dry-process forming device 1 for positive and negative electrode materials of a solid-state battery, wherein the dry-process forming device 1 for positive and negative electrode materials of a solid-state battery further comprises a heating mechanism 50, a cooling system 60, a heating system 70, a hydraulic system 80 and a lubrication system 90, wherein the cooling system 60 is connected to the heating system 70, the hydraulic system 80 and the lubrication system 90, the heating system 70 is connected to the heating mechanism 50, and the hydraulic system 80 and the lubrication system 90 are both connected to the regulating mechanism 40. The method for preparing the dry-process forming device for positive and negative electrode materials of a solid-state battery comprises the following steps:

[0096] Start the lubrication system 90, the hydraulic system 80, the heating system 70 and the cooling system 60;

[0097] Open the adjustment mechanism 40 to adjust the distance between the two rollers 20;

[0098] Turn on the driving mechanism 30 to adjust the rotation speed of the roller 20;

[0099] Turn on the heating mechanism 50 to heat the roller 20;

[0100] Put the test strip into the roller 20 for calendering test. If the test is qualified, the first roller 20 starts to put the raw material for product calendering;

[0101] The shaped product is taken out from the last roller 20 .

[0102] The specific structure of the solid-state battery positive and negative electrode material dry molding equipment 1 refers to the above-mentioned embodiment. Since the decorative panel processing method adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0103] In this embodiment, the processing steps of the dry forming equipment 1 for the positive and negative electrode materials of solid-state batteries are as follows: start the lubrication system 90, the hydraulic system 80, the heating system 70 and the cooling system 60; start the adjustment mechanism 40, adjust the two rollers 20 to the required spacing, and if there are multiple roller groups, adjust the spacing of the multiple roller groups respectively; input the roller target speed to the controller, start the drive mechanism 30, and adjust the rotation speed of the roller 20; start the heating mechanism 50 to heat the roller 20; put in the test strip for roller calendering test, collect the test strips after calendering for measurement and comparison, and judge whether the calendering effect is qualified; if it is unqualified, re-adjust the roller spacing, if it is qualified, start to put the raw materials at the starting end of the multiple roller groups, and roll the product at the last roller group.

[0104] In the precise operation of the solid-state battery positive and negative electrode material dry molding equipment 1, each system plays a vital role, and the coordination between them ensures the stability and efficiency of the equipment. The cooling system 60 is not only responsible for maintaining the appropriate temperature of the equipment to prevent overheating and damage to the equipment, but also ensures the stability and molding quality of the materials during the molding process through fine temperature control. At the same time, the cooling system 60 forms a tight temperature control network by connecting the heating system 70, the hydraulic system 80 and the lubrication system 90 to ensure stable and uniform temperature throughout the molding process.

[0105] The heating system 70, as the heart of the equipment, provides the necessary heat for the molding of the material by accurately controlling the temperature of the heating mechanism 50. It works closely with the cooling system 60 to achieve the best molding state of the material by adjusting the temperature. In addition, the efficient operation of the heating system 70 also provides a guarantee for the high-speed and continuous production of the equipment.

[0106] The hydraulic system 80 is the key to the power transmission of the equipment. It is connected to the second drive member 43 and provides strong power support for the equipment through the flow and pressure change of hydraulic oil. The stability and reliability of the hydraulic system 80 directly affect the production efficiency and molding quality of the equipment. Therefore, we use high-quality hydraulic components and advanced control systems to ensure the stable operation of the hydraulic system 80.

[0107] The lubrication system 90 is responsible for the lubrication and maintenance of the equipment. It is connected to the adjustment mechanism 40 and provides lubrication for the key parts of the equipment to reduce wear and friction and extend the service life of the equipment. At the same time, the lubrication system 90 can also automatically adjust the flow and pressure of the lubricating oil according to the operating status of the equipment to ensure the stable operation of the equipment.

[0108] Furthermore, the spacing between the two rollers 20 ranges from 0.08mm to 0.2mm. It is understandable that the spacing between the rollers can be 0.08mm, 0.085mm, 0.09mm, 0.095mm, 0.1mm, 0.105mm, 0.11mm, etc. The spacing between the two rollers 20 can be adjusted according to different needs. In Example 2, the first driving member 411, the first reducer 413, the screw elevator 414 and the distance adjusting member 412 constitute a three-stage reduction mode, so that the roller gap can be adjusted at the micron level, that is, the spacing adjustment of 0.001mm. Through the high-precision adjustment of the gap between the rollers 20, combined with the layer reduction between multiple rollers 20, the output of the calendered product at the 0.1 mm level can be achieved.

[0109] It can be understood that the above embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, the above technical features can be freely combined without departing from the concept of the present invention, and several deformations and improvements can be made, which all belong to the protection scope of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should belong to the coverage of the claims of the present invention.

Claims

1. A dry forming device for positive and negative electrode materials of solid-state batteries, characterized in that: include: Machine; A roller group, wherein the roller group comprises two rollers, the two rollers are arranged side by side, both ends of the rollers are movably connected to the machine platform, and a pressing space is formed between the two rollers; A driving mechanism, the driving mechanism is drivingly connected to one end of the roller to drive the roller to rotate; An adjusting mechanism, the adjusting mechanism is arranged on the machine platform, the adjusting mechanism comprises a distance adjusting component, the distance adjusting component is movably arranged between the ends of the two rollers, the distance adjusting component comprises a first driving member and a distance adjusting member, the first driving member is connected to the distance adjusting member, the distance adjusting member has a first inclined surface, the distance adjusting member is movably inserted between the ends of the two rollers, a connecting member is arranged on the side surface of the end of one of the rollers, the connecting member is provided with a second inclined surface, the first inclined surface abuts against the second inclined surface, the first driving member drives the distance adjusting member to move, and changes the abutting area of ​​the first inclined surface and the second inclined surface to adjust the distance between the two rollers; The distance adjustment assembly further includes a first reducer and a screw lifter, the first driving member is drivingly connected to the first reducer, the driving end of the first reducer is drivingly connected to the screw lifter, the screw lifter is drivingly connected to the distance adjustment member, the first driving member drives the first reducer and the screw lifter to drive the distance adjustment member to move, and the distance adjustment member moves to adjust the distance between the two rollers; The first driving element is a servo motor, a brushless DC motor or a stepping motor; The distance adjusting member is provided with an oil groove on the first inclined surface, the oil groove is extended along the extension direction of the distance adjusting member, an oil hole is provided at the bottom of the oil groove, and an oil inlet hole is provided on a side surface of the distance adjusting member adjacent to the first inclined surface, the oil inlet hole is connected to the oil hole, and the oil inlet hole is used to input lubricating oil; The number of the distance adjusting components provided in one roller group is two, and the two distance adjusting components are respectively provided between the two end portions of the two rollers; A control system, wherein the control system is electrically connected to the adjustment mechanism, and the control system synchronously controls the two distance adjustment components to adjust synchronously.

2. A solid-state battery positive and negative electrode material dry forming equipment according to claim 1, characterized in that: The oil passage groove is also provided with a plurality of protruding buffer blocks, the plurality of buffer blocks are arranged at intervals, and the buffer blocks are extended along a direction perpendicular to the extension direction of the distance adjusting member.

3. The dry forming equipment for the positive and negative electrode materials of solid-state batteries according to claim 1, characterized in that: There are multiple roller groups, and the multiple roller groups are arranged side by side. The roller diameter of the roller group close to the discharge direction is larger than the roller diameter of the other roller groups.

4. A solid-state battery positive and negative electrode material dry forming equipment according to claim 3, characterized in that: The gaps between the rollers of the roller group arranged side by side gradually decrease along the transmission direction.

5. The dry forming equipment for positive and negative electrode materials of solid-state batteries according to claim 3, characterized in that: The adjustment mechanism further includes a plurality of second driving members, which are respectively arranged on both sides of the extension direction of the plurality of rollers, and the plurality of second driving members respectively drive and press the end of the first or the last roller.

6. A solid-state battery positive and negative electrode material dry forming equipment according to claim 5, characterized in that: The machine is also provided with a slide rail, which is extended along the arrangement direction of the plurality of rollers. A slider is provided on the side of the end of the roller, and the slider is slidably connected to the slide rail to drive the roller to move along the extension direction of the slide rail.

7. A solid-state battery positive and negative electrode material dry forming equipment according to claim 6, characterized in that: The solid-state battery positive and negative electrode material dry forming equipment also includes a heating mechanism, which includes a joint and a connecting pipe. A nozzle is provided inside the roller, and the joint is connected to the other end of the roller. One end of the joint is connected to the connecting pipe, and the other end is connected to the nozzle. The nozzle is used to transport heat transfer liquid to the inside of the roller to heat the inside of the roller.

8. The dry forming equipment for positive and negative electrode materials of solid-state batteries according to claim 7, characterized in that: The heating mechanism further comprises a connecting rod, both ends of which are respectively connected to the joints of two adjacent rollers to fix the positions of the joints.

9. The dry forming equipment for positive and negative electrode materials of solid-state batteries according to claim 8, characterized in that: The driving mechanism includes a third driving member, a second reducer and a transmission shaft. The third driving member is drivingly connected to the second reducer, the driving end of the second reducer is drivingly connected to one end of the transmission shaft, and the other end of the transmission shaft is connected to one end of the roller.

10. A method for preparing a dry forming device for anode and cathode materials of a solid-state battery, characterized in that: The solid-state battery positive and negative electrode material dry molding equipment according to any one of claims 1 to 9 is applied, and the solid-state battery positive and negative electrode material dry molding equipment also includes a heating mechanism, a cooling system, a heating system, a hydraulic system and a lubrication system, the cooling system is connected to the heating system, the hydraulic system and the lubrication system, the heating system is connected to the heating mechanism, and the hydraulic system and the lubrication system are both connected to the regulating mechanism. The preparation method of the solid-state battery positive and negative electrode material dry molding equipment comprises the following steps: Turning on the lubrication system, the hydraulic system, the heating system and the cooling system; Open the adjustment mechanism to adjust the distance between the two rollers; Turning on the driving mechanism and adjusting the rotation speed of the roller; Turning on the heating mechanism to heat the roller; Place the test strip into the roller for calendering test. If the test is qualified, start adding raw materials for product calendering.

11. The method for preparing a dry forming device for anode and cathode materials of a solid-state battery according to claim 10, characterized in that: The distance between the two rollers ranges from 0.08 mm to 0.2 mm.

Images