The process technology of lithium-ion batteries is very strict and complex. We can only briefly present some of the main processes here. (1) Special solvents and binders are used for mixing sludge with powder positive and negative electrode active materials respectively, and after high-speed uniform mixing, sludge-type positive and negative electrode materials are made. \x0d\ (2) Coating film: Apply the prepared suspension evenly to the surface of the metal foil, dry it, and make positive and negative electrode plates respectively. \x0d\ (3) The assembly is placed in the order positive electrode sheet - separator - negative electrode sheet - separator from top to bottom, and is rolled into a battery pole core, which is then injected electrolyte, sealed and other processes, that is, complete the battery assembly process andmake the finished battery. \x0d\ (4) The chemical industry uses special battery charging and discharging equipment to carry out charging and discharging tests on finished batteries, inspect each battery, and select qualified finished batteries before leaving the factory .
Lithium battery production process
The lithium battery production process mainly includes the following steps:
1. Positive electrode slurry: The mixture of positive electrode materials passes through the slurry form applied on the metal foil;
2. Negative electrode slurry: smear the negative electrode material mixture on the metal sheet as a slurry;
3. : Coat Cut the good positive electrode metal sheet into small pieces of the specified size;
4. Negative electrode sheet: Cut the coated negative electrode metal sheet into small pieces of the sizee specified;
< p>5. Steel shell assembly: Assemble the positive electrode sheet, negative electrode sheet and separator into the steel shell to form the initial structure of the battery6. and carry out the necessary tests to ensure the quality and safety of the battery;
7. Packaging: Complete the battery packaging to ensure the stability and safety of the battery.
In the production of lithium batteries, pole piece detection is one of the key links in the process, mainly involving the following equipment:
1. X-ray detection equipment (X-ray machine, industrial). CT machine): used to detect defects and foreign bodies inside the pole piece;
2. Microscope inspection equipment: used to observe and detect the surface quality of the pole piece, including its appearance, size and morphology;< /p>
3. EqMachine vision inspection equipment: used to automatically detect and identify appearance defects, dimensional errors and pole piece position deviations.
The detection accuracy and reliability of these devices are crucial for the production of high-quality lithium batteries. In addition, depending on different types of batteries and production processes, there are other auxiliary equipment and tools used for the production and testing of lithium batteries, such as stirring equipment, coating equipment, drying equipment, sealing equipment, etc. Huahan Weiye has created a complete solution for lithium batteries. Based on the process information, it can quickly understand and evaluate the defects in several main sections of power batteries, in combination with the industry know-how formed by the implementation of probjects in the field of lithium batteries. industry, it has integrated the comprehensive process inspection needs of the precipitated lithium battery industry into a paradigmatic visual inspection solution.
With the rapid development of electric vehicles and automobiles, the power supply of vehicles has also developed rapidly, but the battery is in production.There are many problems that have made the quality of battery products on the market very uneven. The capacity and life of the battery in the later period cannot reach the expected life. This has a lot to do with unique production. battery process in production.
The battery structure consists of an outer casing, a top cover, pole plates, separators, bus bars, poles, bridge protection plates, terminals and other components.
The prosThese of each lithium battery manufacturer have some differences, but they remain the same. The main processes are: batch processing, coating, rolling, cutting, slitting, tab welding and winding. baking, liquid injection, forming, molding, volume separation and testing.
The time for each step is different. Generally, the ingredients, cooking and processing time are relatively long, which can take 10 to 48 hours. Other processes are faster, taking 4 to 8 hours. It will take around 15 days in total.