Understand the lithium battery ingredients production process

Source: 2020 - 03 - 28 14:48 hits: time to understand the actual production process component of lithium-ion batteries 1 solution to make A) PVDF( Or CMC) With the solvent NMP ( Or deionized water) The blend ratio and the weighing; B) Solution mixing time, mixing frequency and frequency ( As well as the solution of external temperature) ; C) After a good solution, check the solution viscosity ( Check) Dissolve ( Visual inspection) And the time of solidification; D) Negative: SBR + CMC solution, mixing time and frequency. 2 A) active material Weighing and mixing, the number of copies and monitoring hybrid is correct; B) Grinding ball: belt grinding ball time is negative; Agate beads and mixture in the ball mill cylinder share; A large and a small ball in the case of agate ball; C) Baking: set the baking temperature and time; Check the temperature after baking after cooling. D) Active substances and solution of mixed: mixing method, mixing time and frequency. E) Screening: 100 mesh ( Or 150 mesh) Molecular sieve. F) Test and inspection: the following inspections of slurry and mixture: solid content, viscosity, the fineness of the mixture, vibration, the density of slurry density. Liquid coating 1 first checks to collect A) Collect liquid specifications ( Length, width and thickness) The input; B) The assembly fluid specification ( Convention) Parts recognition; C) Collect liquid of hydrophilic ( Hydrophobic) Features and appearance ( If there is a scratch, scratch and damage) 。 The calculation of the 2 dressing ( Standard values, upper and lower) A) Single-side finishing ( The thickness of the single will be subject to close to the specifications of the thickness of the pole) ; B) The quantity of double-sided nap ( Double the thickness of the finishing and the most close to the specifications of the thickness of the rod to confirm) 。 3. Pulp confession is too thick ( Thin) liquidity is good, if there is a grain, a bubble too much, is dry. The effect of 4 pole piece A) The proportion of confessions ( Slice thickness) ; B) Appearance: is there a wire, broken bars, agglomerate materials ( Poor roll bar) , the material is excessive accumulation, dry or burned, if there is a bare copper or foreign particles; 5 cutting burrs and appearance inspection standard license.