NANOCRYSTALLINE MAGNETICALLY-CONDUCTIVE SHEET FOR WIRELESS POWER CHARGING AND NEAR FIELD COMMUNICATION, AND MANUFACTURING METHOD THEREFOR

• Main Authors: ZENG, Terrence, WANG, James, ZHANG, Jeff, MA, Danny
• Format: Patent
• Language: Chinese; English; French
• Published: 30.06.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; INDUCTANCES; MAGNETS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; TRANSFORMERS

The present invention relates to the technical field of magnetic materials. Disclosed are a nanocrystalline magnetically-conductive sheet for wireless power charging and near field communication, and a manufacturing method therefor. A nanocrystalline strip is subjected to heat treatment, coated with a protective film, and then subjected to longitudinal roll shearing treatment to obtain a nanocrystalline magnetically-conductive sheet having uniform longitudinal shearing lines which are arranged in form of bars; a central region and a peripheral shielding region are marked on the obtained nanocrystalline magnetically-conductive sheet, and the peripheral shielding region is subjected to secondary mold pressing and crushing to obtain a magnetic permeability lower than that of the magnetically-conductive sheet at the central region, thereby obtaining a nanocrystalline magnetically-conductive sheet for wireless power charging and near field communication. According to the present invention, two different magnetic p