The technical difficulties of lithium electric diaphragm lie in the preparation of matrix materials and the engineering technology of pore-making. In addition to the influence of substrate, additives and film making process, the production equipment also has a great influence on the stability of hole making, and the surface temperature uniformity and mechanical accuracy of heating and cooling rollers are important factors. Traditional thermal oil heating roller cost is low, but after a period of use, often because of thermal oil carbon and other reasons leading to a sharp increase in roller surface temperature. The uneven temperature will increase the aperture distribution, which will affect the consistency of the diaphragm. It is manifested in the consistency of porosity, pore size and distribution, mechanical strength and so on.
Hunan qijiexin electromagnetic induction heating roller adopts a special uniform structure, which can keep the surface temperature of the roller within ±1℃ all the time, so as to ensure the consistency of porosity, pore size and distribution, good consistency of mechanical strength, and improve the overall performance of the product.
