Thermal battery cover plate sealing structure, manufacturing process thereof and thermal battery cover

The invention provides a thermal battery cover plate sealing structure, a manufacturing process thereof and a thermal battery cover, and belongs to the technical field of thermal batteries. The thermal battery cover plate sealing structure comprises a binding post, a cover plate provided with a through hole, a ceramic insulator and a metallization layer, the ceramic insulator is arranged on the binding post in a sleeving mode and arranged in the through hole, and the ceramic insulator comprises Al2O3, kaolin, CaCO3, Y2O3 and SiO2; the metallization layer comprises a molybdenum-manganese metallization layer and a nickel plating layer and is coated on the inner wall and the outer wall of the ceramic insulator; the binding post is fixed on the ceramic insulator through the metallization layer; the ceramic insulator is fixed in the through hole through the metallization layer. The thermal battery adopting the thermal battery cover plate sealing structure not only has good insulating property, but also has better