INDUCTOR AND METHOD OF MANUFACTURING THE SAME

摘要

An inductor and a method of manufacturing the same are disclosed. The inductor comprises: a magnetic core; at least a set of conducting coils, sleeved on the magnetic core, each of the conducting coils including a toroidal coil portion and two extending portions extending from two ends of the toroidal coil portion towards a same direction; the magnetic cover body, hermetically covering and fixing to peripherals of the conducting coil and the magnetic core; and an upper lid and the lower lid; wherein the magnetic core, the conducting coil, the magnetic cover body, the upper lid and the lower lid are integrally formed. Each of the magnetic core, the magnetic cover body, the upper lid and the lower lid includes components of an iron powder, a phosphoric acid, and a resin. When a coil turn number of the conducting coil exceeds a predetermined value, the toroidal coil portion includes at least two layers of parallelly disposed coil windings. The disclosure is adapted to a power supply, an uninterruptable power supply, an air-conditioner frequency converter and power inverter and has a lower cost and better inductance characteristics.

主权项

1. An inductor comprising:
a magnetic core; at least a set of conducting coils, sleeved on the magnetic core, each of the conducting coil including a toroidal coil portion and two extending portions extending from two ends of the toroidal coil portion towards a same direction, the two extending portions extending out of a magnetic cover body and passing through a lower lid to form two electrode terminals capable of being inserted in a circuit board; the magnetic cover body, hermetically covering and fixing to peripherals of the conducting coil and the magnetic core; an upper lid and the lower lid, matching the magnetic cover body in shape and being disposed at a top and a bottom of the magnetic cover body, respectively; the magnetic core, the conducting coil, the magnetic cover body, the upper lid and the lower lid being integrally formed; wherein each of the magnetic core, the magnetic cover body, the upper lid and the lower lid includes components of an iron powder, a phosphoric acid, and a resin, with a mass percent of the phosphoric acid to the iron powder in a range of 0.04% to 6%, and a mass percent of the resin to the iron powder in a range of 0.5% to 10%; when a coil turn number of the conducting coil exceeds a predetermined value, the toroidal coil portion includes at least two layers of parallelly disposed coil windings.