What should I pay attention to when processing lithium batteries?

Precautions for lithium battery processing and liquid injection Preparation of lithium battery liquid injection tools: beakers, liquid bottles, glass rods, droppers, plastic tubes, valves and other auxiliary appliances and objects. Drying: drying in an oven at 60-65°C , Drying time ≥3h (especially pay attention to the removal of water in the dropper tip). Drying materials such as cloth strips and paper rolls should be vacuum dried at a temperature of 75-80°C for 8 hours, during which time, the air should be changed every 2 hours; check the moisture content of the glove box: use a dew point meter to detect the water in the glove box If the dew point meter shows that the dew point temperature should be ≤-30℃; otherwise, you need to replace nitrogen in the glove box and then test; lithium battery electrolyte preparation: pressurize the electrolyte by injecting nitrogen into a 200Kg pure electrolyte stainless steel vat Into the large beaker in the glove box; the method of drying the additives: the currently used additives are BG, T, E, VC, and 204. According to their physical properties, they can be divided into two categories: solid and liquid (including those that become liquid after a little heating. ), solid: BG, liquid: 204, T, E, VC. Drying of solid additives: Put the additives in a beaker, stir and mix evenly with a glass rod, cover the mouth of the beaker with 250 mesh filter gauze, then tie the mouth of the cup with copper wire, and put it in a vacuum drying oven (≤-0.08Mpa) Dry at 65±5oC for 10~12H; after drying, it should be taken out immediately, and the transfer process should not exceed 3 minutes; if you don’t need to take it out immediately, please store it in a vacuum oven; transfer liquid additives (1), straight through high-pressure gas Press out such as 204 and T, use a dry container (must be equipped with a lockable lid) after connecting, tighten the lid immediately, and send it into the glove box transition compartment within 3 minutes; if there is a straight into the glove box If you want to keep the pipeline dry, you can enter the glove box straight through the pipe; (2) It cannot be pressed out by high-pressure gas, and small packages such as VC can be used in the glove box as required; (3) need to be heated For liquids such as E, when melted, just twist the lid of the bucket. Do not melt it. Dry at 65±5℃ for 3~4 hours. After melting, pack several vials at a time, and put them in a glove box for storage. Use for one time; E can not be dried more than 3 times repeatedly. 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 post: The principle of equalization charging of lithium battery pack protection board and analysis of electric equalization function