The functions of various components in the lithium battery separator production line
DATE：2023/8/31 10:54:21 / READ： / SOURCE：This station
Lithium battery separator is an important component of lithium batteries, which plays a role in isolating positive and negative electrodes, ensuring the safety and stable performance of the battery. The production process of the diaphragm requires a series of process steps, including plastic extrusion system, casting and cooling system, casting film thickness measurement system, traction and fully automatic winding system, and electrical control system. Below, I will provide a detailed introduction to the specific functions of these five components.
The plastic extrusion system is one of the core components in the lithium battery separator production line. It mainly consists of an extruder, a screw, and a die head. The extruder melts plastic particles through heating and pressure, and pushes the melted plastic into the mold head through a screw. The mold head plays a role in plastic extrusion, extruding the molten plastic into a thin film according to a certain shape and size. The stability and accuracy of plastic extrusion systems directly affect the quality and performance of membranes.
2. Casting and cooling system:
The casting and cooling system is used to process extruded plastic films. During the casting process, the extruded film passes through a series of rollers and tension control devices, and the thickness and width of the film are adjusted through traction and stretching. At the same time, the cooling system quickly cools the film by controlling the temperature of the cooling roller to maintain good physical properties and flatness. The stability and accuracy of casting and cooling systems have a significant impact on the thickness uniformity and quality of the diaphragm.
3. Casting film thickness measurement system:
The casting film thickness measurement system is used to detect and control the thickness of thin films. It usually consists of optical sensors, control systems, and displays. Optical sensors can measure the thickness of thin films in real-time and transmit data to the control system for analysis and processing. The control system adjusts the operating parameters of the casting system based on the measurement results to ensure that the thickness of the film meets the requirements. The accuracy and stability of the casting film thickness measurement system are crucial for producing high-quality diaphragms.
4. Traction and fully automatic winding system:
The traction and fully automatic winding system is used for traction and winding of the cast film. During the traction process, the film is pulled to an appropriate speed to ensure its flatness and tensile performance. The fully automatic winding system automatically rolls the pulled film according to a certain length and width for subsequent cutting and packaging. The stability and accuracy of the traction and fully automatic winding system have a significant impact on the size and shape of the diaphragm.
5. Electrical control system:
The electrical control system is the control center of the entire production line, used to control and monitor the operating status and parameters of various components. It usually consists of PLC (Programmable Logic Controller), touch screen, sensors, etc. The electrical control system can monitor the operation of the production line in real-time and adjust the working status of each component according to the set parameters to ensure that the produced diaphragm meets the requirements. At the same time, the electrical control system can also record and store production data, facilitating subsequent quality traceability and analysis.
In summary, the five components of the lithium battery separator production line each play an important role. The plastic extrusion system is used to melt and extrude plastic into thin films, the casting and cooling system is used to adjust and cool the thickness and temperature of the film, the casting film thickness measurement system is used to detect and control the thickness of the film, the traction and fully automatic winding system is used to traction and roll the film, and the electrical control system is used to control and monitor the operation status and parameters of the entire production line. The stability and accuracy of these components are crucial for producing high-quality lithium battery separators.
Author：admin