Reactor and compound used in same

摘要

[Problem] Provided is an injection-molded reactor which has excellent heat dissipation properties and in which the internal temperature of the core can be satisfactorily inhibited from rising due to heat generation when the reactor is in operation.;[Solution Means] A material for a core obtained by mixing a soft magnetic powder, a resin binder, and a thermally conductive fibrous filler having a higher thermal conductivity than the soft magnetic powder in accordance with X·(soft magnetic powder)+Y·(thermally conductive filler)+(100-X-Y)·(resin binder), wherein X, indicating the proportion of the soft magnetic powder, is 83 to 96% by mass and Y, indicating the proportion of the thermally conductive filler, is 0.2 to 6.8% by mass, is used to mold a core 16 so that a coil 10 obtained by winding an electric wire is embedded therein without an interval, thereby configuring a reactor 15.

主权项

1. A reactor comprising:
a core comprising a coil and a molded body, wherein the coil comprises a wound electric wire, wherein the molded body comprises a material for the core containing a soft magnetic powder, a resin binder, and a thermally conductive fibrous filler having a higher thermal conductivity than that of the soft magnetic powder, mixed in a proportion represented by following expression (1), wherein the coil is embedded in an inner portion of the molded body without an interval to configure the reactor,
X·(soft magnetic powder)+Y·(thermally conductive filler)+(100-X-Y)·(resin binder). . .   expression (1) wherein X is 83% to 96% by mass and Y is 0.2% to 6.8% by mass, and wherein the soft magnetic powder comprises Si in a range from 0.2% to 9.0% by mass.