CATL announces two solid-state battery patents, which may become a solid-state battery provider

A few days ago, we learned that Ningde Times (300750) has published two solid-state battery related patents, 'a solid electrolyte preparation method' and 'a sulfide solid electrolyte sheet and its preparation method'. It may become a 150kWh solid-state battery provider for Weilai. . The first publication number is CN112242556A. The patent abstract shows that this application provides a method for preparing a solid electrolyte, which includes: dispersing a lithium precursor and a central atom ligand in an organic solvent to form an initial reaction mixture; adding boric acid The ester is dispersed in an organic solvent to form a modified solution; the initial reaction mixture is mixed with the modified solution and dried to obtain an initial product; the initial product is ground, cold pressed, and heat treated to obtain a solid electrolyte. In the preparation method provided in this application, the ionic conductivity of the prepared sulfide solid electrolyte is significantly improved, which is also conducive to the energy density of the all-solid battery. Previously, Weilai released a battery pack with a battery capacity of 150kWh. It is understood that the battery pack uses solid-state battery technology, the positive electrode material uses high nickel, the negative electrode uses silicon carbon, solid-liquid electrolyte of in-situ curing process, and the nano-scale coating process, to achieve a battery energy density of 360Wh/kg. The 2018 ES8 equipped with a new battery pack has a cruising range of 730km (NEDC operating conditions, the same below), the new ES8 has a cruising range of 850km, the ES6 performance version has a cruising range of 900km, and the EC6 performance version has a cruising range of 910km. ET7 cruising range will reach 1000+km.