Common-mode and differential-mode integrated magnetic element

Abstract

The utility model discloses a common-mode and differential-mode integrated magnetic element in the technical field of circuit elements, which comprises a first magnetic core, a second magnetic core and a bottom plate, a third magnetic core and a fourth magnetic core are arranged between the first magnetic core and the second magnetic core, a fifth magnetic core is arranged between the third magnetic core and the fourth magnetic core, a first coil and a second coil are sleeved on the third magnetic core, and the first coil and the second coil are sleeved on the bottom plate. Compared with a traditional common-mode and differential-mode integrated inductor, a main loop of the magnetic element adopts splicing design, material matching is flexible, heating of a product is uniform, saturation is not prone to occurring, and the reliability and stability of the product are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit elements, in particular to a common-differential mode integrated magnetic element. Background Art

[0002] Electronic equipment is prone to generate electromagnetic interference signals during use. The hazards of electromagnetic interference signals are manifested in reducing the quality of transmission signals, causing interference or even damage to circuits or equipment, making the equipment unable to meet the index requirements specified by electromagnetic compatibility standards.

[0003] Therefore, magnetic components are often used to filter the impedance generated by interfering signals. Magnetic integration technology can effectively reduce component size, weight, and losses, playing a crucial role in high-power density power supplies. However, current magnetic components in related technologies suffer from uneven heating and saturation of the magnetic core in certain applications, such as high power consumption. This reduces the filtering effectiveness of the magnetic components.

[0004] To this end, we propose a common-differential mode integrated magnetic component. Utility Model Content

[0005] The purpose of the present utility model is to provide a common-differential mode integrated magnetic component to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a common-differential mode integrated magnetic component, comprising magnetic core one, magnetic core two and a base plate, magnetic core three and magnetic core four are arranged between magnetic core one and magnetic core two, magnetic core five is arranged between magnetic core three and magnetic core four, coil one and coil two are provided on magnetic core three, and coil three and coil four are provided on magnetic core four.

[0007] Preferably, the magnetic core one, the magnetic core two, the magnetic core three, the magnetic core four and the magnetic core five are spliced ​​into a main loop.

[0008] Preferably, the length of the magnetic core five is smaller than the distance between the magnetic core three and the magnetic core four.

[0009] Preferably, the coils 1, 2, 3 and 4 have the same number of turns, and the magnetic core 5 is placed in the middle of the coils 1, 2, 3 and 4.

[0010] Preferably, the coil one, coil two, coil three, and coil four are enameled wires, flat wires, or multi-strand twisted wires.

[0011] Compared with the existing technology, the beneficial effects of the present invention are: the magnetic circuit adopts a spliced ​​magnetic core design, which can flexibly match magnetic materials with different characteristics, so that the components have lower loss, higher DC saturation characteristics, and higher frequency impedance characteristics, thereby having higher energy storage capacity, impedance capacity, making the components heat more evenly, the product reliability is higher and the filtering effect is excellent. Compared with traditional common-differential mode integrated inductors, the main circuit of this magnetic component adopts a splicing design, the materials are flexible to match, the product heats evenly, is not easy to saturate, and improves the reliability and stability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is an exploded view of the utility model;

[0013] Figure 2 This is a schematic diagram of the assembly structure of the utility model.

[0014] In the figure: 1. Magnetic core 1; 2. Magnetic core 2; 3. Magnetic core 3; 4. Magnetic core 4; 5. Magnetic core 5; 6. Coil 1; 7. Coil 2; 8. Coil 3; 9. Coil 4; 10. Bottom plate. DETAILED DESCRIPTION

[0015] 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.

[0016] See also Figure 1-2 The utility model provides a technical solution: a common-differential mode integrated magnetic component, including a magnetic core 1, a magnetic core 2 and a base plate 10, a magnetic core 3 and a magnetic core 4 are arranged between the magnetic core 1 and the magnetic core 2, a magnetic core 5 is arranged between the magnetic core 3 and the magnetic core 4, a coil 1 6 and a coil 2 7 are sleeved on the magnetic core 3, and a coil 3 8 and a coil 4 9 are sleeved on the magnetic core 4. The magnetic core 1 and the magnetic core 2 2 are made of low magnetic permeability and low loss materials, such as sendust series magnetic materials, the magnetic core 3 3 and the magnetic core 4 4 ​​are made of low magnetic permeability and high DC characteristic magnetic materials, such as iron silicon series magnetic cores, the magnetic core 5 5 is made of high magnetic permeability and high magnetic flux density magnetic materials, such as amorphous, high-conductivity ferrite, and silicon steel sheets. The magnetic circuit adopts a spliced ​​magnetic core design, which can flexibly match magnetic materials with different characteristics, so that the component has low loss, high DC saturation characteristics, and high frequency impedance characteristics. This results in higher energy storage capacity, impedance capability, more uniform heating of components, higher product reliability, and excellent filtering effect. Compared with traditional common-differential mode integrated inductors, the main circuit of this magnetic component adopts a splicing design, with flexible material matching, uniform product heating, and less prone to saturation, thereby improving product reliability and stability.

[0017] Among them, core 1, core 2, core 3, core 4, and core 5 are spliced ​​into the main circuit. The main circuit core is made of high DC saturation characteristic material, which is not easy to saturate for large current differential mode signals and can continuously maintain good differential mode inductance; core 5 is made of high magnetic permeability and high magnetic flux density magnetic material, which exhibits higher impedance characteristics for common mode signals and can continuously maintain good common mode impedance. The magnetic circuit adopts a multi-core splicing design, and core materials with different characteristics can be selected for use;

[0018] The length of the magnetic core 5 is smaller than the distance between the magnetic core 3 and the magnetic core 4, and the length direction of the magnetic core is fixed between the magnetic core 3 and the magnetic core 4;

[0019] Coil one 6, coil two 7, coil three 8, and coil four 9 have the same number of turns. Magnetic core five 5 is placed between coil one 6, coil two 7, coil three 8, and coil four 9. Coil one 6, coil two 7, coil three 8, and coil four 9 are enameled wires, flat wires, and multi-strand twisted wires.

[0020] Working principle: Magnetic core 1 and magnetic core 2 are made of low magnetic permeability and low loss materials, such as Sendust series magnetic materials; magnetic core 3 and magnetic core 4 are made of low magnetic permeability and high DC characteristic magnetic materials, such as Sendust series magnetic cores; magnetic core 5 is made of high magnetic permeability and high magnetic flux density magnetic materials, such as amorphous, high-conductivity ferrite, and silicon steel sheet. The magnetic circuit adopts a spliced ​​core design, which can flexibly match magnetic materials with different characteristics to make the components have lower loss, higher DC saturation characteristics, and higher frequency impedance characteristics, thereby having higher energy storage capacity, impedance capacity, more uniform heating of components, higher product reliability and excellent filtering effect. Compared with traditional common-differential mode integrated inductors, the main circuit of this magnetic component adopts a splicing design, with flexible material matching, uniform product heating, and not easy to saturate, which improves product reliability and stability.

[0021] 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 common-differential mode integrated magnetic component, comprising a magnetic core 1 (1), a magnetic core 2 (2) and a base plate (10), characterized in that: A magnetic core three (3) and a magnetic core four (4) are provided between the magnetic core one (1) and the magnetic core two (2), a magnetic core five (5) is provided between the magnetic core three (3) and the magnetic core four (4), a coil one (6) and a coil two (7) are provided on the magnetic core three (3), and a coil three (8) and a coil four (9) are provided on the magnetic core four (4).

2. The common-differential mode integrated magnetic component according to claim 1, characterized in that: The magnetic core one (1), the magnetic core two (2), the magnetic core three (3), the magnetic core four (4) and the magnetic core five (5) are spliced ​​into a main circuit.

3. The common-differential mode integrated magnetic component according to claim 1, characterized in that: The length of the magnetic core five (5) is smaller than the distance between the magnetic core three (3) and the magnetic core four (4).

4. The common-differential mode integrated magnetic component according to claim 1, characterized in that: The coil one (6), coil two (7), coil three (8), and coil four (9) have the same number of turns, and the magnetic core five (5) is placed in the middle of coil one (6), coil two (7), coil three (8), and coil four (9).

5. The common-differential mode integrated magnetic component according to claim 1, characterized in that: The coil one (6), coil two (7), coil three (8), and coil four (9) are enameled wires, flat wires, and multi-strand twisted wires.

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