CN210245197U

CN210245197U - DUI magnetic element

Info

Publication number: CN210245197U
Application number: CN201921535875.6U
Authority: CN
Inventors: Sizhong Huang; 黄思忠; Jincheng Lin; 林金城; Wenlong Huang; 黄文龙
Original assignee: Xiamen Nanci Electronics Co ltd
Current assignee: Xiamen Nanci Electronics Co ltd
Priority date: 2019-09-16
Filing date: 2019-09-16
Publication date: 2020-04-03
Anticipated expiration: 2029-09-16

Abstract

The utility model relates to the technical field of inductors, in particular to a DUI magnetic element, which comprises more than two I-shaped magnetic cores and two U-shaped magnetic cores, wherein the more than two I-shaped magnetic cores are arranged on the same straight line to form a center pillar magnetic core, a first air gap is arranged between every two adjacent I-shaped magnetic cores, the two U-shaped magnetic cores are symmetrically distributed on two sides of the center pillar magnetic core, the opening of the U-shaped magnetic core faces the center pillar magnetic core, and a second air gap is arranged between the U-shaped magnetic core and the center pillar magnetic core; the more the number of air gaps are arranged in the magnetic piece, the smaller the amplitude of the diffused magnetic flux entering the coil is, the electromagnetic loss is reduced, and the electromagnetic conversion efficiency is improved.

Description

DUI magnetic element

Technical Field

The utility model relates to an inductor technical field, in particular to DUI magnetic element.

Background

The conventional coil inductor generally comprises a magnetic core and a coil, and in order to prevent magnetic saturation, a magnetic circuit air gap is usually provided in a magnetic circuit. As known from patent publication No. CN207217212U, there is a UUI type combined magnetic core in the prior art, which refers to a combination including an I type magnetic core and two U type magnetic cores, and a sheet-like air gap medium is provided at a mating surface where the U type magnetic core and the I type magnetic core are in contact with each other.

However, the air gap of the existing UUI-type combined magnetic core still has diffused magnetic flux which extends into the coil, so that the electromagnetic conversion efficiency of the magnetic core is reduced, and the loss is increased.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to solve the technical problem of providing a DUI magnetic element, which can reduce the diffusion magnetic flux, reduce the electromagnetic loss and improve the electromagnetic conversion efficiency.

In order to solve the technical problem, the utility model discloses a technical scheme be:

the utility model provides a DUI magnetic element, includes two or more I type magnetic cores and two U type magnetic cores, two or more I type magnetic core is arranged and is formed the center pillar magnetic core on same straight line, adjacent two be equipped with first air gap, two between the I type magnetic core U type magnetic core symmetric distribution is in the both sides of center pillar magnetic core, the opening orientation of U type magnetic core the center pillar magnetic core, U type magnetic core extremely be equipped with second air gap between the center pillar magnetic core.

Further, the number of the I-shaped magnetic cores is two.

Further, the number of the I-shaped magnetic cores is four.

Further, the width of the U-shaped opening of the U-shaped magnetic core is equal to the length of the center pillar magnetic core extending in the same linear direction.

The beneficial effects of the utility model reside in that: in a DUI magnetic element, more than two I-shaped magnetic cores are arranged on the same straight line to form a center pillar magnetic core, a first air gap is arranged between every two adjacent I-shaped magnetic cores, a second air gap is arranged between the U-shaped magnetic core and the center pillar magnetic core, the air gap amount of the second air gap and the air gap amount of the first air gap are adjusted according to specific requirements, the more the air gaps are arranged in the magnetic element, the smaller the amplitude of diffusion magnetic flux penetrating into a coil is, the lower the electromagnetic loss is, and the higher the electromagnetic conversion efficiency is.

Drawings

FIG. 1 is a schematic diagram of the DUI magnetic component of the present invention with two I-cores;

FIG. 2 is a schematic diagram of a DUI magnetic component of the present invention with four I-cores;

description of reference numerals:

1. a type I magnetic core; 2. a U-shaped magnetic core; 3. a first air gap; 4. a second air gap.

Detailed Description

In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.

Referring to fig. 1 to 2, a DUI magnetic component of the present invention includes two or more I-shaped magnetic cores and two U-shaped magnetic cores, wherein the two or more I-shaped magnetic cores are arranged on a same straight line to form a center pillar magnetic core, a first air gap is disposed between two adjacent I-shaped magnetic cores, the two U-shaped magnetic cores are symmetrically disposed on two sides of the center pillar magnetic core, an opening of the U-shaped magnetic core faces the center pillar magnetic core, and a second air gap is disposed between the U-shaped magnetic core and the center pillar magnetic core.

From the above description, the beneficial effects of the present invention are: in a DUI magnetic element, more than two I-shaped magnetic cores are arranged on the same straight line to form a center pillar magnetic core, a first air gap is arranged between every two adjacent I-shaped magnetic cores, a second air gap is arranged between the U-shaped magnetic core and the center pillar magnetic core, the air gap amount of the second air gap and the air gap amount of the first air gap are adjusted according to specific requirements, the more the air gaps are arranged in a magnetic piece, the smaller the amplitude of diffusion magnetic flux penetrating into a coil is, the electromagnetic loss is reduced, and the electromagnetic conversion efficiency is improved.

Further, the number of the I-shaped magnetic cores is two.

From the above description, the existing UUI-type combined magnetic core has two air gaps, while the number of the I-type magnetic cores in the scheme is two, and three air gaps are introduced into the whole magnetic piece, so that the amplitude of the diffused magnetic flux penetrating into the coil is reduced, the electromagnetic loss is reduced, and the electromagnetic conversion efficiency is improved.

Further, the number of the I-shaped magnetic cores is four.

From the above description, the number of the I-shaped magnetic cores is four, five air gaps are introduced into the whole magnetic member, and the diffusion magnetic flux hardly exists in the magnetic element, so that the electromagnetic conversion efficiency is greatly improved. Further, the width of the U-shaped opening of the U-shaped magnetic core is equal to the length of the center pillar magnetic core extending in the same linear direction.

As can be seen from the above description, the width of the U-shaped opening of the U-shaped magnetic core is equal to the length of the center pillar magnetic core extending in the same straight line direction, and when the U-shaped magnetic core and the center pillar magnetic core are assembled, the two end faces of the U-shaped magnetic core and the two end faces of the center pillar magnetic core are respectively located on the same plane, thereby facilitating the assembly of the U-shaped magnetic core and the I-shaped magnetic core.

Referring to fig. 1, a first embodiment of the present invention is:

a DUI magnetic element comprises an I-shaped magnetic core 1 and two U-shaped magnetic cores 2, wherein the I-shaped magnetic cores 1 are arranged on the same straight line to form a center pillar magnetic core, a first air gap 3 is arranged between every two adjacent I-shaped magnetic cores 1, the two U-shaped magnetic cores 2 are symmetrically distributed on two sides of the center pillar magnetic core, an opening of each U-shaped magnetic core 2 faces the center pillar magnetic core, a second air gap 4 is arranged between each U-shaped magnetic core 2 and the center pillar magnetic core, the air gap amount of the second air gap 4 and the air gap amount of the first air gap 3 can be equal or unequal, the DUI magnetic element is specifically adjusted according to requirements, and the width of the U-shaped opening of the U-shaped magnetic core 2 and the length of the center pillar magnetic core extending in the same straight line direction are equal. Air gaps still exist after assembly, but the air gap amount is micro air gaps; when each magnetic core is assembled, the matching end face of each magnetic core is padded with a PET medium sheet with proper thickness to set the air gap.

Three air gaps are introduced into the whole magnetic piece, so that the amplitude of the diffused magnetic flux entering the coil is reduced, the electromagnetic loss is reduced, and the electromagnetic conversion efficiency is improved.

Referring to fig. 2, a second embodiment of the present invention is:

a DUI magnetic element comprises an I-shaped magnetic core 1 and two U-shaped magnetic cores 2, wherein the I-shaped magnetic cores 1 are arranged on the same straight line to form a center pillar magnetic core, a first air gap 3 is arranged between every two adjacent I-shaped magnetic cores 1, the two U-shaped magnetic cores 2 are symmetrically distributed on two sides of the center pillar magnetic core, an opening of each U-shaped magnetic core 2 faces the center pillar magnetic core, a second air gap 4 is arranged between each U-shaped magnetic core 2 and the center pillar magnetic core, the air gap amount of the second air gap 4 and the air gap amount of the first air gap 3 can be equal or unequal, the DUI magnetic element is specifically adjusted according to requirements, and the width of the U-shaped opening of the U-shaped magnetic core 2 and the length of the center pillar magnetic core extending in the same straight line direction are equal.

Five air gaps are introduced into the whole magnetic element, and diffusion magnetic flux hardly exists in the magnetic element, so that the electromagnetic conversion efficiency is greatly improved.

To sum up, the utility model provides a DUI magnetic element forms the center pillar magnetic core through setting up two or more I type magnetic cores and arranging on same straight line, is equipped with first air gap between two adjacent I type magnetic cores, U type magnetic core to be equipped with second air gap between the center pillar magnetic core, the air gap volume of second air gap 4 and the air gap volume of first air gap 3 can equal or also can be unequal, adjust according to the demand specifically, the more the air gap volume that sets up in the magnetic part, make the range that diffusion magnetic flux deepens coil inside become little, reduce electromagnetic loss and improve electromagnetic conversion efficiency; when the number of the I-shaped magnetic cores is two, three air gaps are introduced into the whole magnetic piece, so that the amplitude of the diffused magnetic flux entering the coil is reduced, the electromagnetic loss is reduced, and the electromagnetic conversion efficiency is improved; when the number of the I-shaped magnetic cores is four, five air gaps are introduced into the whole magnetic piece, and diffusion magnetic flux hardly exists in the magnetic element, so that the electromagnetic conversion efficiency is greatly improved.

The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.

Claims

1. The utility model provides a DUI magnetic element, its characterized in that includes more than two I type magnetic cores and two U type magnetic cores, two more I type magnetic cores are arranged and are formed the center pillar magnetic core on same straight line, adjacent two be equipped with first air gap between the I type magnetic core, two U type magnetic core symmetric distribution is in the both sides of center pillar magnetic core, the opening orientation of U type magnetic core the center pillar magnetic core, U type magnetic core extremely be equipped with the second air gap between the center pillar magnetic core.

2. A DUI magnetic element as claimed in claim 1 wherein the number of type I cores is two.

3. A DUI magnetic element as claimed in claim 1 wherein the number of type I cores is four.

4. The DUI magnetic element of claim 1, wherein the first air gaps are each within an opening of the U-shaped magnetic core.

5. The DUI magnetic element of claim 1, wherein the width of the U-shaped opening of the U-shaped core is equal to the length of the center leg core extending in the same linear direction.