Coil module composite application shielding sheet

• Main Authors: GUO QINGWEN, WANG JING, XU KEXIN, HUO YUNFANG, QIAN JIANGHUA, WU CHANGHE, MA FEI, SHI HAITAO, LIN TAO, HU HUIXIN
• Format: Patent
• Language: Chinese; English
• Published: 17.09.2019
• Subjects: ANTENNAS, i.e. RADIO AERIALS; BASIC ELECTRIC ELEMENTS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; INDUCTANCES; MAGNETS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; SYSTEMS FOR STORING ELECTRIC ENERGY; TRANSFORMERS

The utility model relates to a composite application shielding sheet of a coil module. The composite application shielding sheet is characterized in that a first magnetic conductive layer is formed by laminating soft magnetic material strips which are subjected to graphical processing or single-layer graphical processing on the soft magnetic material strips; attaching a magnetic sheet formed by a mixture of a resin binder and magnetic powder to form a second magnetic conductive layer; and finally, the shielding sheet is formed, and finally, the coil module is formed through shape fitting. The shielding sheet is simple and feasible in process, high in integration automation degree, thin in thickness, good in shielding capability, high in charging efficiency, small in temperature rise, more suitable for NFC composite function module coils, controllable in material magnetic parameters, uniform in shielding sheet surface treatment shape, and capable of improving product stability and greatly saving working proced