Preparation method of small-size high-inductance-value integrally-formed inductor

• Main Authors: MA LI, XIE ZAIHUI, YU FAN, HUO LISHAN, GUO HAI
• Format: Patent
• Language: Chinese; English
• Published: 06.02.2024
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; INDUCTANCES; MAGNETS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; TRANSFORMERS

The invention relates to the technical field of inductor preparation, in particular to a preparation method of a small-size high-inductance-value integrally-formed inductor, and the method comprises the steps: S1, pressing and sintering a first soft magnetic powder material to obtain a T-shaped sintered green body; s2, carrying out insulation protection on the surface of the T-shaped sintered green body, and carrying out pretreatment on a region where an electrode is preset to be formed on the green body to form a welding terminal; s3, winding a coil on the T-shaped sintered green body, and then connecting and fixing a coil lead end point and a welding terminal to form an electrode to obtain a winding green body; and S4, the winding blank and the cup-shaped blank are combined and pressed to obtain the small-size high-inductance-value integrally-formed inductor. The method has the beneficial effects that the T-shaped green body is sintered and densified, so that the compactness of a soft magnetic material in t