How does the 18650 lithium ion battery cell production process look like?

18650 is the most common lithium ion battery packaging method at this stage. Whether it is the most fashionable ternary material nowadays, or the first lithium iron phosphate ion in my country, and the lithium titanate ion that has not been popularized, there are 18650 specifications. model. The 18650 battery core adopts Cylindrical cylindrical packaging method. This type of battery core has a diameter of 20mm and a length of 65mm. It is widely used in industries such as power banks, battery cars, notebook computers, and strong light flashlights. The benefit of this type of packaging is that the specifications and models are uniform and convenient. Automation technology, industrialized processing and manufacturing, with high impact toughness, strong impact resistance, and high product qualification rate; in addition, there are also Prismatic square hard package packages, which are more common on mobile phones and tablets. The most immediate benefits of this type of package are Lightweight, small in size and portable. In the notebook period, 18650 batteries were only devotees of electronic products. With the popularization of smart products such as smartphones and tablet computers, 18650 has just begun to move from behind to reception, and is familiar to everyone. The production process of the battery cell 1: Before the glue is applied to the processing line, a mask and foot cover must be worn to prevent inhalation of smoke and dust and cause static induction. Start with the mastering of the sizing production process. In this process, large waves of copper (light yellow) and aluminum platinum (silver white) can be seen. Aluminum platinum is used for sizing nickel cobalt manganese NCM ternary material; on the contrary, copper is used for sizing negative specific raw material high-purity graphite; in which the milky white is the diaphragm. The world's lithium-ion battery diaphragm is key to being occupied by processors such as Asahi, Celgard, SK, toray, W-SCOP, etc. This kind of overseas company controls nearly 70% of the market share. The market share of my country's diaphragm companies is about 30%, and the independent domestic processing and manufacturing of lithium-ion battery diaphragms has continued to increase. The volume of the battery cell is obtained based on the proportion of the total area of u200bu200bthis secret formula. A whole bundle of sizing positive battery cathode material is about 126mm wide, and then it must be cut into 7 small rolls with a total width of about 20mm. Each roll is evenly divided into several sections, and each section means a battery cell. The required materials. According to the detailed analysis by XCMG Crane, the technical engineer of the battery cell factory, the current market price of one ton of ternary battery cathode material is 120,000 yuan, and one ton of raw materials can be used to process 50,000 batteries; today’s battery processing capacity is five per day. For one hundred thousand, 10 tons of ternary battery cathode materials must be used, and the expenditure for this item alone must be 600,000 yuan per day. The production process of the battery cell 2: The positive and negative stages that have been assembled and classified will be automatically rolled here. The milky white material is the diaphragm. The battery cell cannot work normally. You must add lithium-ion battery electrolyte as a medium to chemically change the positive and negative so that lithium can be transferred between the positive and negative, resulting in positive charge and positive ion output kinetic energy lithium-ion battery. Carry out battery charging. After the automatic technology rolls the package, it immediately rolls down on the processing line, and then goes to the next assembly process to install it into the aluminum shell. The production process of the battery cell 3: Initial charging and testing. After the introduction of the lithium-ion battery electrolyte, the battery has actually not been stored and energized, and the conditions of the positive and negative surface layers are not stable at this time. It must be based on the initial charge. In all normal applications, this type of initial charge is called the transformation. When charging for the first time, additional power consumption must be charged to form a protective film on the surface of the electrical level. This protective film is the secret of the low lithium-ion battery life of the lithium-ion battery. In addition, the characteristics of the protective film also endanger the characteristics and service life of the battery. Therefore, it is very critical to turn into a production process. The conversion is carried out by using a sub-container cabinet. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Which kind of battery is good for industrial backup batteries?