Briefly introduce the production process of the two batteries.
Liquid electrolyte battery: ingredients—coating—rolling—slitting—sheet making—winding—encapsulation—liquid injection—formation—second sealing—sorting—OCV—packaging gel electrolyte battery: ingredients—coating—rolling Pressing—Slitting—Baking—Slicing—Gel Coating—Winding—Packaging—Hot Pressing—Forming—Second Seal—OCV—Packing The difference, I'm afraid you will unify it if you look at it.) Samsung does not make gel batteries. The gel battery was made by Sony (which was later sold to Murata Manufacturing Co., Ltd.).
The so-called gel cell, that is, after the tab is completed, a layer of about 10um thick gel electrolyte is applied to the surface of the positive and negative pole pieces, which is a bit like a solid glue on paper. So he has no injection process, because his electrolyte can only be applied, not injected-its electrolyte cannot flow (but the lithium ions inside can move under the action of voltage, similar to the salt bridge used in chemical experiments).
Other processes are similar to those of ordinary electrolyte system cells. At present, mainstream battery cell manufacturers, such as ATL and Cosmx, all use liquid electrolyte systems. They inject electrolyte into the cell after the cell is packaged. The advantage of gel batteries is that they have good safety performance. The ceiling for heavy impact and needle punching is high. I stayed at Sony for two years and they felt very high with the impact of heavy objects and needle-punched ceilings. The shortcomings are also obvious-high-rate charge and discharge performance is not good. Because of the limited mobility of lithium ions in the colloidal electrolyte. This is contrary to the fast charge and fast release requirements that we are now emphasizing.
