Method for manufacturing slurry for insulation protective layer of rechargeable battery and device for manufacturing slurry for insulation protective layer of rechargeable battery

A method for manufacturing slurry for an insulation protective layer of a rechargeable battery, the method comprising:

• obtaining an insulation material calibration curve that shows a relationship between particle size and compressibility of an insulation material using sets of particle size and compressibility of the insulation material;
• obtaining a binder calibration curve that shows a relationship between particle size and compressibility of a binder using sets of particle size and compressibility of the binder;
• measuring a particle size of the insulation material that is loaded;
• measuring a particle size of the binder that is loaded;
• determining mixture weight ratio with reference to the insulation material calibration curve and the binder calibration curve so that a compressibility of mixture powder of the insulation material and the binder equals a set compressibility based on the measured particle size of the insulation material and the measured particle size of the binder;
• mixing powder of the insulation material and powder of the binder at the determined mixture weight ratio to form mixture powder of the insulation material and the binder;
• loading the formed mixture powder of the insulation material and the binder into a powder dispenser;
• and
• adding a solvent to the mixture powder, which is loaded in the powder dispenser.