Analysis of tension control system of lithium battery winder

Analysis of the tension control system of the lithium battery winding machine In order to control the tension, it is required to form a tension control system. Since tension can only be formed between two (or more than two) process devices with driving (or braking) torque, the tension control system is based on two transmission control systems. The tension control system speed reference system of the drive control system is called the speed reference system, and other driving control systems establish the load according to the tension requirements, which constitutes tension. The essence is the speed reference system of the speed according to the required tension speed follow system, called Tension controllable speed following system. The task of tension control is usually placed on the latter system, so people are used to calling the latter a tension control system. The tension control system of the lithium battery winding machine is analyzed. Lithium battery winding machine tension control system structure The tension control system consists of unfolding organization, unfolding organization, tension detection organization and line speed detection organization. The rolling organization proposed that after the completion of the lithium battery material, the organization will be the battery raw material winding. The lithium battery is in the winding process. However, because the winding speed and rolling speed are not common, the tension of the lithium battery material is changed, so the tension is required. The test organization detects the size of the strip tension, the rolling speed and the control of the rolling organization constitute a tension closed-loop control system. The purpose of the linear speed detection mechanism is to detect the linear speed of the conveyor belt. The architecture is shown below. The lithium battery material is extracted by a rewinding structure controlled by a DC motor, and the rewinding structure controlled by a servo motor is wound into a battery. When the winding speed and the winding speed are different, the tension roller will deviate from the balance bearing. When the winding speed is greater than the winding speed, the tension roller deflects to the right; when the winding speed is less than the winding speed, the tension roller deflects to the left. The controller periodically detects the tension roller bearing, calculates the tension, and calculates the winding speed of the winding structure through a specific algorithm (such as PID algorithm), and finally outputs it to the DC motor. Therefore, the unwinding mechanism is a closed-loop control system, and the unwinding mechanism is an open-loop system, and the open-loop system is a system that unwinds after unwinding. The principle of tension control system of lithium battery winding machine can be seen from the above figure, the tension control system is essentially a linear speed servo tracking system. Simply put, it is to control the bearing of the tension roller by controlling the linear speed of the winding motor to make it in a balanced state, so as to realize the constant tension control of the system. Since the unwinding line speed is not synchronized with the unwinding line speed, the tension sensor detects the change of the tension value. Use this change as the feedforward control of the system. By adjusting the speed of the unwinding motor, the line speed can reach the actual winding line speed to ensure the stability of the tension. However, the linear speed of the feeding motor cannot follow the linear speed of the unwinding needle, so that the material belt can move freely. The size of the internal tension is shown as the material belt and other work, which will not only cause the deformation of the lithium battery, but also greatly reduce the regularity of the winding of the battery product, which is also an important reason for the low tortuosity of the square lithium battery. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Analysis of the reasons for the development of lithium titanate battery technology in my country