Dry-method tension adjusting device for positive and negative electrode materials of solid-state battery

Abstract

The invention discloses a solid-state battery positive and negative electrode material dry method tension adjusting device, which comprises a tension roller mechanism, a first counterweight assembly and a second counterweight assembly, the tension roller mechanism comprises a tension roller body, the two end parts of the tension roller body are both provided with first mounting grooves along the radial direction, and the first mounting grooves are provided with second mounting grooves along the radial direction; a second mounting groove is formed in the side wall of the tension roller body in the axial direction; the first counterweight assembly comprises a first counterweight block and a first driving piece, and the first counterweight block is movably arranged in the first mounting groove and moves in the radial direction; the second balance weight assembly comprises a second balance weight block and a second driving piece, and the second balance weight block is movably arranged in the second mounting groove and moves in the axial direction. The balance weight layout is optimized by adjusting the balance weight modules in the X direction and the Y direction, dynamic balance recovery of the tension roller is achieved, it is ensured that the tension of the pole piece is stable, the thickness uniformity and coating flatness of the pole piece are improved, and the performance consistency of the battery is enhanced.

Description

Technical Field

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

[0002] Pole sheet manufacturing is an important part of the overall manufacturing process of lithium batteries. The main processes of pole sheet manufacturing include unwinding, dry coating, calendering, slitting, sheet making, die cutting and winding, etc. The calendering effect has an important impact on the production quality of pole sheets. The calendering area usually needs to continuously set up multiple rollers to achieve multi-stage calendering of the pole sheet to ensure that the calendering effect meets the production quality requirements of the pole sheet. Unwinding and winding are completed by winding and unwinding equipment, including unwinding modules and winding modules. Both the unwinding module and the winding module are equipped with tension adjustment devices for tension detection of the winding and sending system.

[0003] In the manufacturing process of lithium battery pole pieces, the tension adjustment device is critical to the quality of the pole pieces. The existing device has limitations in tension control. Changes in foil properties and process parameters can easily lead to uneven tension and roller imbalance, affecting the consistency and safety of the pole pieces. The traditional counterweight method is fixed or manually adjusted, which is difficult to meet the needs of high-precision and dynamic production, and cannot achieve synchronous adjustment in the X and Y directions at the same time, resulting in tension roller tension fluctuations, reducing production efficiency and product quality, and increasing costs. 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 tension adjustment device for positive and negative electrode materials of solid-state batteries, which is used to optimize the counterweight layout by adjusting the counterweight module in the X and Y directions, realize the dynamic balance recovery of the tension roller, ensure the stability of the pole piece tension, improve the uniformity of the pole piece thickness and the coating flatness, and enhance the consistency of battery performance.

[0005] A dry tension adjustment device for positive and negative electrode materials of a solid-state battery, the dry tension adjustment device for positive and negative electrode materials of a solid-state battery comprising: A tension roller mechanism, the tension roller mechanism comprising a tension roller body, both ends of the tension roller body are provided with a first mounting groove in a radial direction, and a side wall of the tension roller body is provided with a second mounting groove in an axial direction; A first counterweight assembly, the first counterweight assembly comprising a first counterweight block and a first driving member, the first counterweight block being movably disposed in the first mounting groove, the first driving member being drivingly connected to the first counterweight block to drive the first counterweight block to move radially in the first mounting groove; The second counterweight assembly includes a second counterweight block and a second driving member, the second counterweight block is movably disposed in the second mounting groove, and the second driving member is drivingly connected to the second counterweight block to drive the second counterweight block to move axially in the second mounting groove.

[0006] Further, the end of the tension roller body is provided with a plurality of first mounting grooves, the plurality of first mounting grooves are arranged at intervals in the radial direction, the number of the first counterweight blocks is plurality, and one first counterweight block is arranged in one first mounting groove; And, the side wall of the tension roller body is provided with a plurality of second mounting grooves, the plurality of second mounting grooves are arranged at intervals along the circumferential direction, the number of the second counterweight blocks is multiple, and one or more second counterweight blocks are arranged in one of the second mounting grooves.

[0007] Furthermore, the plurality of first mounting grooves are nonlinearly distributed along the radial direction from the center along the end of the tension roller body, and the intervals between the plurality of first mounting grooves in the radial direction gradually increase.

[0008] Furthermore, the heights of the plurality of first mounting grooves gradually increase along the direction from the end center to the edge of the tension roller body, and the weight of the first counterweight block arranged in the first mounting groove gradually increases along the direction from the end center to the edge of the tension roller body.

[0009] Furthermore, the specifications and weights of the plurality of first counterweight blocks disposed at both end portions of the tension roller body are the same.

[0010] Furthermore, the tension roller mechanism further comprises a plurality of sensors, and the plurality of tension sensors are distributed in an array along the circumference of the tension roller body for measuring tension distribution; And / or, the tension roller mechanism further comprises a plurality of inclination sensors, which are arranged at both ends or shaft sides of the tension roller body to monitor axial and radial inclination angles; And / or, the tension roller mechanism further includes an acceleration sensor, wherein the acceleration sensor is abutted against the roller body of the tension roller and is used to capture vibration acceleration.

[0011] Furthermore, the dry tension adjustment device for the positive and negative electrode materials of the solid-state battery also includes two rollers, which are respectively located on both sides of the bottom of the tension roller body, and the two rollers are symmetrically arranged along the tension roller mechanism; the foil passes through the bottom of one roller, the top of the tension roller body and the bottom of the other roller in sequence.

[0012] Furthermore, two opposite edges of the two passing rollers and two side edges of the tension roller body are respectively located on two same vertical planes.

[0013] Furthermore, the weight of the tension roller body ranges from 1.5kg to 1.7kg.

[0014] Furthermore, the tension roller body is made of carbon steel, carbon fiber, stainless steel or aluminum alloy.

[0015] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art: The counterweight module of this application contains multiple independently movable counterweights, which are distributed on special tracks or support structures along the radial and axial directions of the tension roller. The counterweights are made of high-density metal, and the shape design takes into account aerodynamics and space layout optimization to reduce operating resistance and inertial interference. Each counterweight is connected to a motor or electromagnetic actuator via a mechanical connecting rod or a flexible transmission mechanism to ensure accurate and efficient force transmission. The actuator responds to the control system command to drive the counterweight to move flexibly, achieving fast and accurate counterweight adjustment and stabilizing the balance of the tension roller.

[0016] The first counterweight block is arranged along the radial direction of the tension roller to ensure that the tension roller is subjected to balanced radial force and runs smoothly under complex working conditions, thereby achieving balanced force in the Y-axis direction. The second counterweight block is arranged along the axial direction of the tension roller to achieve balanced force in the X-axis direction. The cooperation between the first counterweight assembly and the second counterweight assembly improves the tension stability of the pole piece and the consistency of the product.

[0017] According to the calculation result of the unbalanced torque, the control system drives the first driving member and / or the second driving member to move the first counterweight block and / or the second counterweight block. The adjustment strategy is optimized based on mechanical principles and empirical data, with rough adjustment first and fine adjustment later. In case of lateral imbalance, the radial outer counterweight block is driven to move in the same direction by equal amounts according to the torque, and then the near-axial counterweight block is fine-tuned for optimization; longitudinal imbalance is coordinated and balanced by moving the counterweight block axially. During the adjustment, the tension roller status is continuously monitored, and the adjustment amount is corrected in real time according to the feedback until the imbalance degree drops within the threshold and reaches a stable balance, ensuring uniform foil tension and improving the accuracy and efficiency of pole piece production.

[0018] By adjusting the counterweight module to optimize the counterweight layout, the dynamic balance recovery of the tension roller can be achieved, the pole piece tension stability can be ensured, the uniformity of pole piece thickness and coating flatness can be improved, and the consistency of battery performance can be enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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.

[0020] 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.

[0021] In the attached figure: Figure 1 This is a structural schematic diagram of an embodiment of a dry tension adjustment device for positive and negative electrode materials of a solid-state battery of the present application; Figure 2 This is a structural schematic diagram of another perspective of the dry tension adjustment device for positive and negative electrode materials of solid-state batteries of this application; Figure 3 This is a front view of the dry tension adjustment device for the positive and negative electrode materials of the solid-state battery of this application; Figure 4 This is a schematic diagram of the end structure of the tension roller body in the dry tension adjustment device for the positive and negative electrode materials of the solid-state battery in this application.

[0022] Reference numerals: 1. A dry tension adjustment device for positive and negative electrode materials of solid-state batteries; 10. Tension roller mechanism; 11. Tension roller body; 111. First mounting slot; 113. Second mounting slot; 13. Tension sensor; 20. First counterweight assembly; 21. First counterweight block; 23. First driving member; 30. Second counterweight assembly; 31. Second counterweight block; 33. Second driving member; 40. Over roller. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] like Figure 1 - Figure 4 As shown, the present application provides a dry tension adjustment device 1 for positive and negative electrode materials of a solid-state battery, comprising: The tension roller mechanism 10 includes a tension roller body 11. Both ends of the tension roller body 11 are provided with first mounting grooves 111 in the radial direction, and a side wall of the tension roller body 11 is provided with second mounting grooves 113 in the axial direction. A first counterweight assembly 20, the first counterweight assembly 20 comprises a first counterweight block 21 and a first driving member 23, the first counterweight block 21 is movably disposed in the first mounting groove 111, and the first driving member 23 is drivingly connected to the first counterweight block 21 to drive the first counterweight block 21 to move radially in the first mounting groove 111; The second counterweight assembly 30 includes a second counterweight block 31 and a second driving member 33. The second counterweight block 31 is movably disposed in the second mounting groove 113. The second driving member 33 is drivingly connected to the second counterweight block 31 to drive the second counterweight block 31 to move axially in the second mounting groove 113.

[0026] The counterweights are arranged in multiple sections along the radial direction of the tension roller. The near-axis section is equipped with a small-mass, high-sensitivity counterweight to quickly respond to tiny unbalanced torques and fine-tune the balance, which is suitable for high-frequency, low-amplitude tension fluctuations, such as fluctuations caused by microscopic defects in the foil or slight changes in speed. The counterweights in the middle section have increasing mass and a moderate adjustment range to handle moderate imbalances and compensate for tension changes caused by gradual changes in process parameters or aging of equipment components. Large-mass counterweights are placed in the peripheral section to deal with large sudden imbalances, such as coil switching or sudden vibration of equipment. The large moment of inertia can be used to restore balance and stability, ensuring that the tension roller is balanced in radial force and runs smoothly under complex working conditions, thereby improving the tension stability of the pole piece and product consistency.

[0027] The counterweight module contains multiple independently movable counterweights, which are distributed on special tracks or support structures along the radial and axial directions of the tension roller. The counterweights are made of high-density metal, and the shape design takes into account aerodynamics and space layout optimization to reduce running resistance and inertial interference. Each counterweight is connected to the motor or electromagnetic actuator through a mechanical connecting rod or a flexible transmission mechanism to ensure accurate and efficient force transmission. The actuator responds to the control system command to drive the counterweight to move flexibly, achieving fast and accurate counterweight adjustment and stabilizing the balance of the tension roller.

[0028] The first counterweight block 21 is arranged along the radial direction of the tension roller to ensure that the tension roller is subjected to balanced radial force and runs smoothly under complex working conditions, thereby achieving balanced force in the Y-axis direction. The second counterweight block 31 is arranged along the axial direction of the tension roller to achieve balanced force in the X-axis direction. The cooperation between the first counterweight assembly 20 and the second counterweight assembly 30 improves the tension stability of the pole piece and the consistency of the product.

[0029] According to the calculation result of the unbalanced torque, the control system drives the first driving member 23 and / or the second driving member 33 to move the first counterweight block 21 and / or the second counterweight block 31. The adjustment strategy is optimized based on mechanical principles and empirical data, with rough adjustment first and fine adjustment later. In case of lateral imbalance, the radial outer counterweight block is driven to move in the same direction by equal amounts according to the torque, and then the near-axial counterweight block is fine-tuned for optimization; longitudinal imbalance is coordinated and balanced by moving the counterweight block axially. During the adjustment, the tension roller status is continuously monitored, and the adjustment amount is corrected in real time according to the feedback until the imbalance degree drops within the threshold and reaches a stable balance, thereby ensuring uniform foil tension and improving the accuracy and efficiency of pole piece production.

[0030] By adjusting the counterweight module to optimize the counterweight layout, the dynamic balance recovery of the tension roller can be achieved, the pole piece tension stability can be ensured, the uniformity of pole piece thickness and coating flatness can be improved, and the consistency of battery performance can be enhanced.

[0031] According to the production process and foil characteristics, the tension roller is divided into multiple dynamic zones axially, and each zone is independently equipped with a counterweight block group and a monitoring and control unit. For example, the coating zone finely adjusts the weight according to the coating thickness and viscosity changes to ensure constant tension; the drying zone adjusts the weight to cope with tension fluctuations caused by temperature and humidity; the winding zone adapts to the coil diameter and increases and changes the weight to maintain stable tension. The counterweight layout is dynamically adjusted in each zone to achieve precise zoning control of the full axial tension, optimize the quality of different process sections of the pole piece, improve the overall manufacturing process level and product performance of lithium batteries, and meet the high-end market's stringent requirements for battery consistency and reliability.

[0032] Optionally, the first driving member 23 and the second driving member 33 can be screw driven, gear rack driven or electromagnetic driven. When it is screw driven, a precision screw transmission structure is designed inside the tension roller in the axial and radial directions. The radial screw is screwed to the counterweight, and one end of it extends to the end of the roller body and is connected to the motor output shaft through a coupling, and the motor is precisely controlled by the control system. The axial screw and the gear at the end of the radial screw mesh to form a transmission link, so that the rotation of the motor is converted into the precise displacement of the counterweight in the radial and axial directions through the screw drive. The screw is made of high-strength, low-friction coefficient alloy material, and is precisely machined to ensure the thread accuracy and surface finish, and to ensure the transmission stability and positioning accuracy. When it is gear rack driven, a gear rack transmission system is constructed inside the tension roller. Special gears are installed in the radial and axial directions, and racks are fixed on the side of the counterweight, and the gears are meshed with the racks. The motor drives the gears to rotate, driving the counterweight to move in the axial and radial directions. The gear is made of high-hardness alloy steel, and the surface hardness and wear resistance are improved by heat treatment; the rack is made of wear-resistant engineering plastics or metal materials, and the surface is processed with high-precision tooth shape to ensure meshing accuracy and transmission efficiency. By accurately controlling the motor direction, speed and pulse number, the position of the counterweight block can be accurately controlled to meet the tension adjustment requirements under different working conditions. When it is electromagnetically driven, the driving mechanism is designed using the electromagnetic principle. Electromagnetic coils are arranged axially and radially inside the tension roller, and magnetic materials or permanent magnets are embedded in the counterweight block. The control system controls the on-off and size of the electromagnetic coil current according to the imbalance state of the tension roller, generates a magnetic field that interacts with the counterweight block and drives it to move. The electromagnetic coil is wound with high conductivity and high temperature resistant enameled wire, and the layout is optimized according to electromagnetic force calculation and simulation to ensure uniform distribution of the magnetic field and controllable intensity. This mechanism has a fast response speed and high control accuracy, is suitable for working conditions with rapid tension changes, and ensures the dynamic balance and stability of the tension roller.

[0033] Further, the end of the tension roller body 11 is provided with a plurality of first mounting grooves 111, the plurality of first mounting grooves 111 are arranged at intervals in the radial direction, the number of first counterweight blocks 21 is multiple, and one first counterweight block 21 is arranged in one first mounting groove 111; And, the side wall of the tension roller body 11 is provided with a plurality of second mounting grooves 113 , the plurality of second mounting grooves 113 are arranged at intervals along the circumferential direction, the number of second counterweight blocks 31 is multiple, and one or more second counterweight blocks 31 are arranged in a second mounting groove 113 .

[0034] According to the radius of the tension roller and the stress characteristics, multiple first counterweights 21 are arranged. The inner section is densely arranged to capture the fine tension changes in the near-axis area because of its large tension gradient and imbalance sensitivity; the outer section is sparsely arranged to take into account large imbalance adjustment and overall stability. When there is a large imbalance, the displacement force-enhancing arm of the outer section counterweight improves the compensation efficiency, and reducing the number and mass of the outer section counterweights reduces the rotational inertia, energy consumption and mechanical wear, thereby extending the equipment life, improving the operating economy and reliability, and optimizing the lithium battery production efficiency and quality control.

[0035] Furthermore, the plurality of first mounting grooves 111 are distributed nonlinearly along the radial direction from the center along the end of the tension roller body 11 , and the intervals between the plurality of first mounting grooves 111 along the radial direction gradually increase.

[0036] According to the radius of the tension roller and the force characteristics, the radial distance of the counterweights from the center is nonlinearly distributed. From the inside to the outside, the spacing is dense first and then sparse. The dense arrangement of the inner section captures the fine tension changes in the near-axis area because of its large tension gradient and imbalance sensitivity; the sparse arrangement of the outer section takes into account both large imbalance adjustment and overall stability. When there is a large imbalance, the displacement force-enhancing arm of the outer section counterweights improves the compensation efficiency, and reducing the number and mass of the outer section counterweights reduces the rotational inertia, energy consumption and mechanical wear, prolongs the equipment life, improves the economic efficiency and reliability of operation, and optimizes the production efficiency and quality control of lithium batteries.

[0037] Furthermore, the heights of the plurality of first mounting grooves 111 gradually increase from the end center to the edge of the tension roller body 11 , and the weight of the first counterweight block 21 arranged in the first mounting groove 111 correspondingly gradually increases from the end center to the edge of the tension roller body 11 .

[0038] The counterweights are arranged in multiple sections along the radial direction of the tension roller. The near-axis section is equipped with a small-mass, high-sensitivity counterweight to quickly respond to tiny unbalanced torques and fine-tune the balance, which is suitable for high-frequency, low-amplitude tension fluctuations, such as fluctuations caused by microscopic defects in the foil or slight changes in speed. The counterweights in the middle section have increasing mass and a moderate adjustment range to handle moderate imbalances and compensate for tension changes caused by gradual changes in process parameters or aging of equipment components. Large-mass counterweights are placed in the peripheral section to deal with large sudden imbalances, such as coil switching or sudden vibration of equipment. The large moment of inertia can be used to restore balance and stability, ensuring that the tension roller is balanced in radial force and runs smoothly under complex working conditions, thereby improving the tension stability of the pole piece and product consistency.

[0039] Furthermore, the specifications and weights of the plurality of first counterweights 21 disposed at both end portions of the tension roller body 11 are the same.

[0040] The same specification counterweight blocks are symmetrically arranged at both ends of the tension roller, and each group contains counterweight blocks of multiple quality levels that are coordinated and adjusted according to the working conditions. This symmetrical layout forms a uniform balanced force couple in the axial direction, offsetting the asymmetric tension caused by the lateral offset of the foil, uneven wear of the roller 40, or deviation of the tension sensor 13, ensuring uniform axial tension and no tilt or distortion of the roller body, preventing local tension overload, uneven thickness, and coating defects of the pole piece, improving the lateral quality consistency of the pole piece, and enhancing the stability and safety of battery performance.

[0041] Furthermore, the tension roller mechanism 10 further includes a plurality of sensors, wherein the plurality of tension sensors 13 are distributed in an array along the circumference of the tension roller body 11, and are used to measure the tension distribution; And / or, the tension roller mechanism 10 further includes a plurality of inclination sensors, which are arranged at both ends or shaft sides of the tension roller body 11 to monitor the axial and radial inclination angles; And / or, the tension roller mechanism 10 further includes an acceleration sensor, which is supported on the tension roller body 11 and is used to capture vibration acceleration.

[0042] A high-precision sensor network is set up at the key parts of the tension roller mechanism 10, including tension sensors 13 arranged at multiple points along the foil contact arc to measure the tension distribution, inclination sensors to monitor the axial and radial inclination angles of the roller body, and acceleration sensors to capture vibration acceleration changes. Each sensor synchronously collects data in real time, which is amplified, filtered, and A / D converted by the signal conditioning circuit and then transmitted to the control system to provide accurate raw data for unbalanced torque calculation, ensuring timely and accurate perception of tension roller state changes.

[0043] The sensor monitors the status of the tension roller in real time, and the data is transmitted to the control system for processing and analysis, driving the actuator to accurately adjust the counterweight layout to maintain the dynamic balance and stability of the tension roller, ensure that the foil tension is uniform and constant, and improve the quality accuracy of pole piece manufacturing.

[0044] Based on the principle of mechanical balance, the stress state of the tension roller is accurately monitored. According to the calculation results of the unbalanced torque, the motor or electromagnetic actuator is driven to move the counterweight to the optimal radial and axial position for balancing according to the preset strategy. Through real-time feedback closed-loop control, the counterweight layout is adaptively optimized according to the working conditions and foil characteristics, effectively suppressing tension fluctuations, providing a stable and reliable tension environment for lithium battery pole piece production, and ensuring product consistency and performance reliability.

[0045] Furthermore, the dry tension adjustment device 1 for positive and negative electrode materials of solid-state batteries also includes two rollers 40, which are respectively located on both sides below the tension roller body 11, and the two rollers 40 are symmetrically arranged along the tension roller mechanism 10; the foil passes through the bottom of one roller 40, the top of the tension roller body 11 and the bottom of the other roller 40 in sequence.

[0046] The device mainly includes the following parts: a tension roller mechanism 10, which is composed of a tension roller body 11 and a tension sensor 13, wherein the tension sensor 13 is connected to the tension roller body 11; two over-rollers 40, which are respectively located on both sides below the tension roller body 11, and the two over-rollers 40 are symmetrically arranged along the tension roller mechanism 10; the foil passes through the bottom of one of the over-rollers 40, the top of the tension roller body 11, and the bottom of the other over-roller 40 in sequence. The two over-rollers 40 are symmetrically arranged, which helps to maintain the balance and stability of the foil and reduce deviation and jitter. The two over-rollers 40 are symmetrically arranged, so that the foil keeps balance when passing through the tension roller body 11, avoiding the problem of uneven tension caused by asymmetry. The symmetrical arrangement also helps to reduce the deviation and jitter of the foil and improve the stability of tension control. Since the tension roller body 11 has its own gravity, it is smaller than the traditional device, when the gravity sensor detects, the minimum tension N that needs to be subtracted from the gravity of the tension roller body 11 is smaller, so a lower tension adjustment starting point can be achieved. When the gravity of the tension roller body 11 is N, the tension adjustment starting point starts from N; when the gravity of the tension roller body 11 is N, the tension adjustment starting point starts from N, and so on.

[0047] The tension sensor 13 is connected to the tension roller body 11 to monitor the tension value on the foil in real time. The data of the tension sensor 13 can be used for the feedback control system to automatically adjust the position and angle of the tension roller to ensure that the tension is always within the set range.

[0048] The tension adjustment device adjusts the relative position between the tension roller mechanism 10 and the two rollers 40, and sets the two rollers 40 on both sides below the tension roller mechanism 10, and the layout of the two rollers 40 is symmetrical. In this way, the gravity of the tension roller body 11 itself is used as the main source of tension, and combined with this symmetrical installation method, the tension roller mechanism 10 can achieve accurate tension control within a lower tension range. This design not only improves the accuracy of tension control, but also simplifies the structure of the device, making the entire tension adjustment process more stable and reliable.

[0049] Furthermore, two opposite edges of the two passing rollers 40 and two side edges of the tension roller body 11 are respectively located on two same vertical planes.

[0050] In this embodiment, the tension roller body 11 and the two roller bodies are installed in a degree, so that the gravity of the roller can act more directly on the tension adjustment process. Through this direct gravity transmission, the tension can be more effectively controlled to ensure the stability and uniformity of the material during the transmission process. In addition, this design also helps to reduce mechanical wear and extend the service life of the equipment, while also simplifying the maintenance and adjustment process and improving production efficiency.

[0051] Furthermore, the weight of the tension roller body 11 ranges from 1.5 kg to 1.7 kg.

[0052] According to the detailed description of the present invention, the roller body of the tension roller has a specific weight range. Specifically, the weight range is between .kg and .kg. This means that the weight of the roller body is precisely controlled within this range to ensure the performance and stability of the tension roller in practical applications. Through this weight control, the balance and reliability of the roller body during operation can be effectively guaranteed, thereby improving the operating efficiency and service life of the entire equipment.

[0053] Furthermore, the tension roller body 11 is made of carbon steel, carbon fiber, stainless steel or aluminum alloy.

[0054] The material of the tension roller body 11 can be a variety of different materials, including carbon steel, carbon fiber, stainless steel and aluminum alloy. These materials each have their own unique characteristics and advantages, suitable for different application scenarios and needs. Carbon steel material has high strength and wear resistance, suitable for bearing large loads and harsh working environments. Carbon fiber material, with its light weight and high strength, provides excellent dynamic performance and corrosion resistance, suitable for applications with strict requirements on weight and performance. Stainless steel material has good corrosion resistance and high temperature resistance, suitable for use in harsh chemical environments or high temperature conditions. Aluminum alloy material is widely used in occasions that need to reduce weight and have a certain degree of conductivity due to its light weight and good conductivity.

[0055] Furthermore, the surface of the tension roller body 11 is provided with anti-slip grooves.

[0056] The surface of the tension roller is specially designed with anti-skid patterns. These anti-skid patterns are designed to increase the friction of the roller surface, thereby preventing materials or objects from sliding on the roller surface during use. This design ensures that materials can be transported more stably and safely when passing through the tension roller, avoiding production accidents or material damage caused by sliding. The shape and layout of the anti-skid patterns are carefully designed to meet the needs of different materials and production environments, thereby improving overall production efficiency and safety.

[0057] 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 tension adjustment device for positive and negative electrode materials of solid-state batteries, characterized in that: include: A tension roller mechanism, the tension roller mechanism comprising a tension roller body, both ends of the tension roller body are provided with a first mounting groove in a radial direction, and a side wall of the tension roller body is provided with a second mounting groove in an axial direction; A first counterweight assembly, the first counterweight assembly comprising a first counterweight block and a first driving member, the first counterweight block being movably disposed in the first mounting groove, the first driving member being drivingly connected to the first counterweight block to drive the first counterweight block to move radially in the first mounting groove; The second counterweight assembly includes a second counterweight block and a second driving member, the second counterweight block is movably disposed in the second mounting groove, and the second driving member is drivingly connected to the second counterweight block to drive the second counterweight block to move axially in the second mounting groove.

2. A dry tension adjustment device for positive and negative electrode materials of solid-state batteries according to claim 1, characterized in that: The end of the tension roller body is provided with a plurality of first mounting grooves, the plurality of first mounting grooves are arranged at intervals in the radial direction, the number of the first counterweight blocks is plurality, and one first counterweight block is arranged in one first mounting groove; And, the side wall of the tension roller body is provided with a plurality of second mounting grooves, the plurality of second mounting grooves are arranged at intervals along the circumferential direction, the number of the second counterweight blocks is multiple, and one or more second counterweight blocks are arranged in one of the second mounting grooves.

3. A dry tension adjustment device for positive and negative electrode materials of solid-state batteries according to claim 2, characterized in that: The plurality of first mounting grooves are distributed nonlinearly along the radial direction from the center along the end of the tension roller body, and the intervals between the plurality of first mounting grooves along the radial direction gradually increase.

4. A dry tension adjustment device for positive and negative electrode materials of solid-state batteries according to claim 3, characterized in that: The heights of the first mounting grooves gradually increase from the center of the end to the edge of the tension roller body, and the weight of the first counterweight block arranged in the first mounting groove gradually increases from the center of the end to the edge of the tension roller body.

5. A dry tension adjustment device for positive and negative electrode materials of solid-state batteries according to any one of claims 2 to 4, characterized in that: The specifications and weights of the plurality of first counterweight blocks arranged at both end portions of the tension roller body are the same.

6. A dry tension adjustment device for positive and negative electrode materials of solid-state batteries according to claim 4, characterized in that: The tension roller mechanism further comprises a plurality of sensors, wherein the plurality of tension sensors are distributed in an array along the circumference of the tension roller body for measuring tension distribution; And / or, the tension roller mechanism further comprises a plurality of inclination sensors, which are arranged at both ends or shaft sides of the tension roller body to monitor axial and radial inclination angles; And / or, the tension roller mechanism further includes an acceleration sensor, which is abutted against the roller body of the tension roller and is used to capture vibration acceleration.

7. A dry tension adjustment device for positive and negative electrode materials of solid-state batteries according to claim 5, characterized in that: The dry tension adjustment device for the positive and negative electrode materials of the solid-state battery also includes two rollers, which are respectively located on both sides of the bottom of the tension roller body, and the two rollers are symmetrically arranged along the tension roller mechanism; the foil passes through the bottom of one roller, the top of the tension roller body and the bottom of the other roller in sequence.

8. A dry tension adjustment device for positive and negative electrode materials of solid-state batteries according to claim 4, characterized in that: The two opposite edges of the two passing rollers and the two side edges of the roller body of the tension roller are respectively located on two same vertical planes.

9. A dry tension adjustment device for positive and negative electrode materials of solid-state batteries according to any one of claims 1 to 3, characterized in that: The weight of the tension roller body ranges from 1.5kg to 1.7kg.

10. A dry tension adjustment device for positive and negative electrode materials of solid-state batteries according to any one of claims 1 to 3, characterized in that: The material of the tension roller body is carbon steel, carbon fiber, stainless steel or aluminum alloy.

Images