Flat coil inductor, flat coil and manufacture method of flat coil

Abstract

The invention discloses a flat coil inductor, a flat coil and a manufacture method of the flat coil. The flat coil inductor comprises a magnetic core, a magnetic cover covering the magnetic core and the flat coil coiled on the magnetic core, wherein the magnetic core is provided with, at least, a first groove and a second groove. The flat coil comprises, at least, the top end base portion and two side edge flattening portions, wherein the base portion is larger than the side edge flattening portions in thickness, the side edge flattening portions are larger than the base portion in width, the base portion is embedded into the first groove, and the side edge flattening portions are embedded into the second groove. The side edge flattening portions are formed by locally flattening the flat coil of the inductor, so that different thicknesses are obtained, the side edge flattening portions are larger than the base portion in width but are smaller than the base portion in thickness, and a magnetic core accommodating space defined by the flat coil is increased. The magnetic core can be matched and assembled with a large corresponding magnetic core, so that the direct-current resistance of the inductor in a limited size range is decreased, the saturation current is increased, and the inductor can obtain the best electrical characteristics.

Description

Technical field [0001] The present invention relates to the technology of the inductor field, in particular to a flat coil inductor, a flat coil and a manufacturing method of the flat coil. Background technique [0002] Current inductors generally include a magnetic core and a coil. The coil is wound on the magnetic core. When the current flows, it will be full of magnetic energy. When the current becomes smaller, the magnetic energy in the coil will generate a force to prevent the current from changing. It has a wide range of applications, including servers, workstations, power supplies, monitors, switches, motherboards, scanners, telephones, modems, etc. [0003] Now there are manufacturers on the market that use flat coils to replace the original coils made of wire. In the production of flat coils, a flat metal sheet with good electrical conductivity is selected and wound on the magnetic core. Due to the size limitation of the inductor, the width of the flat coil cannot be mad...

AI Technical Summary

Problems solved by technology

Due to the size limitation of the inductor, the width of the flat coil cannot be made too wide, so that the space for placing the magnetic core in the flat coil is small, and the electrical characteristics of low DC resistance and high saturation current cannot be achieved.

Images