Manganese zinc ferrite high-current UI type magnetic core structure

Abstract

The utility model discloses a manganese zinc ferrite heavy current UI type magnetic core structure which comprises a U type magnetic core and an I type magnetic core connected to the opening side of the U type magnetic core, the U type magnetic core and the I type magnetic core are both made of manganese zinc ferrite materials, and an air gap is formed in a middle column of the U type magnetic core and / or the I type magnetic core. The air gap is arranged on the middle column of the U-shaped magnetic core and / or the I-shaped magnetic core, so that the magnetic core can bear larger current, the matching surfaces of the U-shaped magnetic core and the I-shaped magnetic core can be directly assembled, and the magnetic core has the characteristics of simplicity in operation, good bonding effect and convenience in automatic assembly, and meets the application requirements of customers on high efficiency and high performance.

Description

Technical Field

[0001] The utility model belongs to the technical field of UI type magnetic cores, and in particular relates to a manganese-zinc ferrite high-current UI type magnetic core structure. Background Art

[0002] Manganese-zinc soft ferrites, with their physical and chemical properties such as high magnetic permeability, low coercivity, and low power loss, are widely used in the automotive industry, primarily in the manufacture of high-frequency transformers, sensors, and PFC inductors. As environmental requirements in these applications increase, the current required to load ferrites is also increasing.

[0003] Currently, high-current UI-type ferrite products are improved by thickening the product and bonding the air gap sheet to the mating surface. However, the assembly process after bonding the air gap sheet to the mating surface of the product is complicated, has poor bonding effect, and is difficult to automate, which cannot meet customers' high-efficiency and high-performance application requirements. Utility Model Content

[0004] The purpose of the present invention is to provide a manganese zinc ferrite high current UI type magnetic core structure to solve the problems raised in the above background technology. The present invention provides a manganese zinc ferrite high current UI type magnetic core structure with the characteristics of simple operation, good bonding effect and convenient automated assembly.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a manganese-zinc ferrite high-current UI-type magnetic core structure, comprising a U-shaped magnetic core and an I-type magnetic core connected to the opening side of the U-shaped magnetic core, the U-shaped magnetic core and the I-type magnetic core are both made of manganese-zinc ferrite material, and an air gap is provided on the middle column of the U-shaped magnetic core and / or the I-type magnetic core.

[0006] In order to form an air gap, the I-shaped magnetic core further includes two left and right parts, which are bonded together to form an air gap, and the U-shaped magnetic core also includes two left and right parts bonded together.

[0007] In order to prevent the magnetic circuit from leaking to the outside, reduce the problem of magnetic leakage, and increase the firmness of the bonding, the air gap is further distributed in a "Z" shape on a single surface of the U-shaped core or the I-shaped core.

[0008] In order to prevent the magnetic circuit from leaking to the outside, reduce the problem of magnetic leakage, and increase the firmness of the bonding, the air gap is further distributed in a "U" shape on a single surface of the U-shaped magnetic core or the I-shaped magnetic core.

[0009] In order to increase the size of the air gap, a dielectric sheet is further provided inside the air gap. The dielectric sheet is a ceramic sheet or a flame-resistant material.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] 1. The utility model provides an air gap on the center column of the U-shaped magnetic core and / or the I-shaped magnetic core, so that it can withstand a larger current. The mating surfaces of the U-shaped magnetic core and the I-shaped magnetic core can be directly assembled, with the characteristics of simple operation, good bonding effect, and convenient automated assembly, meeting customers' high-efficiency and high-performance application requirements;

[0012] 2. The air gap of the utility model is distributed in a "Z" shape or "U" shape on a single surface of the U-shaped magnetic core or the I-shaped magnetic core, so that the transmission of the magnetic circuit is not easy to leak to the outside, reducing the problem of magnetic leakage and increasing the firmness of the bonding;

[0013] 3. A dielectric sheet is provided inside the air gap of the utility model, and the dielectric sheet is bonded between the left and right parts of the U-shaped magnetic core or the I-shaped magnetic core to increase the size of the air gap. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 This is a schematic structural diagram of the I-type magnetic core of the utility model;

[0016] Figure 3 This is a schematic structural diagram of Example 3 of the present utility model;

[0017] Figure 4 This is a schematic structural diagram of Example 4 of the present utility model;

[0018] In the figure: 1. U-shaped magnetic core; 2. I-shaped magnetic core; 3. Air gap; 4. Dielectric sheet. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Example 1

[0021] See also Figure 1 The utility model provides the following technical solutions: a manganese-zinc ferrite high-current UI-type magnetic core structure, comprising a U-shaped magnetic core 1 and an I-type magnetic core 2 connected to the opening side of the U-shaped magnetic core 1, the U-shaped magnetic core 1 and the I-type magnetic core 2 are both made of manganese-zinc ferrite materials, and an air gap 3 is provided on the middle column of the U-shaped magnetic core 1 and / or the I-type magnetic core 2.

[0022] By adopting the above technical solution, the utility model provides an air gap 3 on the middle column of the U-shaped magnetic core 1 and / or the I-shaped magnetic core 2, so that it can withstand a larger current. The mating surfaces of the U-shaped magnetic core 1 and the I-shaped magnetic core 2 can be directly assembled, which has the characteristics of simple operation, good bonding effect, and convenient automated assembly, meeting customers' high efficiency and high performance application requirements.

[0023] Example 2

[0024] See also Figure 2 The difference between this embodiment and embodiment 1 is that: specifically, the I-type magnetic core 2 includes two left and right parts, and the air gap 3 is formed between the left and right parts after being bonded together, and the U-type magnetic core 1 also includes two left and right parts bonded together.

[0025] By adopting the above technical solution, the air gap 3 is formed by bonding the left and right parts.

[0026] Example 3

[0027] See also Figure 3 The difference between this embodiment and embodiment 2 is that: specifically, the air gap 3 is distributed in a "Z" shape on a single surface of the U-shaped magnetic core 1 or the I-shaped magnetic core 2.

[0028] By adopting the above technical solution, the transmission of the magnetic circuit is not easily leaked to the outside, the problem of magnetic leakage is reduced, and the firmness of the bonding is increased.

[0029] Example 4

[0030] See also Figure 4 The difference between this embodiment and embodiment 2 is that: specifically, the air gap 3 is distributed in a “U” shape on a single surface of the U-shaped magnetic core 1 or the I-shaped magnetic core 2.

[0031] By adopting the above technical solution, the transmission of the magnetic circuit is not easily leaked to the outside, the problem of magnetic leakage is reduced, and the firmness of the bonding is increased.

[0032] Example 5

[0033] The difference between this embodiment and embodiment 2 is that: specifically, a dielectric sheet 4 is provided inside the air gap 3, and the dielectric sheet 4 is bonded between the left and right parts of the U-shaped magnetic core 1 or the I-shaped magnetic core 2; the dielectric sheet 4 is a ceramic sheet or a flame-resistant material (insulating board, epoxy board, epoxy resin board and fiberglass board, etc.), and in this embodiment, a ceramic sheet is preferably used.

[0034] By adopting the above technical solution, the size of the air gap can be increased.

[0035] To sum up, the utility model provides an air gap 3 on the middle column of the U-shaped magnetic core 1 and / or the I-shaped magnetic core 2, so that it can withstand a larger current, and the mating surfaces of the U-shaped magnetic core 1 and the I-shaped magnetic core 2 can be directly assembled, which has the characteristics of simple operation, good bonding effect, and convenient automated assembly, meeting customers' high efficiency and high performance application requirements; the air gap 3 of the utility model corresponds to a "Z" shape or "U" shape distribution on a single surface of the U-shaped magnetic core 1 or the I-shaped magnetic core 2, so that the transmission of the magnetic circuit is not easy to leak to the outside, reducing the problem of magnetic leakage and increasing the bonding strength; the interior of the air gap 3 of the utility model is provided with a dielectric sheet 4, and the dielectric sheet 4 is bonded between the left and right parts of the U-shaped magnetic core 1 or the I-shaped magnetic core 2 to increase the size of the air gap.

[0036] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A manganese-zinc ferrite high current UI type magnetic core structure, characterized by: It comprises a U-shaped magnetic core and an I-shaped magnetic core connected to the open side of the U-shaped magnetic core, and an air gap is provided on the middle column of the U-shaped magnetic core and / or the I-shaped magnetic core; The air gap is distributed in a "Z" shape on a single surface of the U-shaped core or the I-shaped core, and the air gap is distributed in a "U" shape on a single surface of the U-shaped core or the I-shaped core.

2. The high current UI type manganese zinc ferrite magnetic core structure according to claim 1, characterized in that: The U-shaped magnetic core and the I-shaped magnetic core are both made of manganese-zinc ferrite materials.

3. The manganese-zinc ferrite high-current UI type magnetic core structure according to claim 1, characterized in that: The I-shaped magnetic core includes two left and right parts, which are bonded to form an air gap. The U-shaped magnetic core also includes two bonded left and right parts.

4. The manganese-zinc ferrite high-current UI core structure according to claim 1, characterized in that: A dielectric sheet is provided inside the air gap.

5. The manganese-zinc ferrite high-current UI core structure according to claim 4, characterized in that: The dielectric sheet is a ceramic sheet or a flame-resistant material.

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