TWM603186U - Combined magnetic core structure - Google Patents

Abstract

A combined magnetic core structure includes a first magnetic core structure, a second magnetic core structure, a third magnetic core structure and a fourth magnetic core structure. The first magnetic core structure and the second magnetic core structure are disposed opposite to each other, and the first magnetic core structure and the second magnetic core structure are supported by the third magnetic core structure and the fourth magnetic core structure. The first magnetic core structure is composed of first magnetic cores of equal specification disposed along X-axis, and the amount of the first magnetic cores is a. The second magnetic core structure is composed of second magnetic cores of equal specification disposed along X-axis, and the amount of the second magnetic cores is b. The third magnetic core structure is composed of third magnetic cores of equal specification disposed along Y-axis, and the amount of the third magnetic cores is c. The fourth magnetic core structure is composed of fourth magnetic cores of equal specification disposed along Y-axis, and the amount of the fourth magnetic cores is d. The first magnetic cores and the second magnetic cores are cuboids, and the third magnetic cores and the fourth magnetic cores are cuboids having rounded corners. The combined magnetic core structure of this disclosure is able to be adapted to the power inductance of the electronic converter having high power.

Description

Combined core structure

This creation belongs to the technical field of power electronic power converters, and specifically relates to an efficient combined magnetic core structure.

In power electronic power converters, power inductors for energy storage and filtering have a wide range of applications. In the traditional design of these power inductors, most of the toroidal powder core magnetic materials are used, and the toroidal core has a relatively large application advantage in power electronic power converters in the small and medium power section. The manufacturing process is relatively easy and the performance is stable, but In high-power power electronic power converters, due to the increase of current, the requirements of anti-DC bias ability and inductance, application and manufacturing process are more difficult.

In order to solve the above problems, this creation provides an efficient combined magnetic core structure, including: a first magnetic core structure, a second magnetic core structure, a third magnetic core structure, and a fourth magnetic core structure. The first magnetic core structure It is arranged opposite to the second magnetic core structure, and between the two is supported by the third magnetic core structure and the fourth magnetic core structure. The magnetic cores are arranged in sequence along the X-axis direction. The second magnetic core structure is composed of b pieces of second magnetic cores of the same specifications arranged in sequence along the X-axis direction, and the third magnetic core structure is composed of c pieces of third The magnetic cores are arranged in sequence along the Y-axis direction. The fourth magnetic core structure is composed of d pieces of fourth magnetic cores of the same specifications arranged in sequence along the Y-axis direction. The first magnetic core and the second magnetic core are both Cuboid, the third magnetic core and the fourth magnetic core are both rounded rectangular parallelepipeds, wherein a, b, c, and d are natural numbers.

Preferably, the first magnetic core and the second magnetic core are both made of powder core magnetic material.

Preferably, each of the first magnetic core and each of the second magnetic core have the same length.

Preferably, each of the first magnetic core and each of the second magnetic cores have the same height.

Preferably, the total width of a piece of the first magnetic core is equal to the total width of b piece of the second magnetic core.

Preferably, the third magnetic core and the fourth magnetic core are both made of powder core magnetic material.

Preferably, each of the third magnetic core and each of the fourth magnetic core have the same length.

Preferably, each of the third magnetic core and each of the fourth magnetic core have the same width.

Preferably, the total height of c pieces of the third magnetic core and the total height of d pieces of the fourth magnetic core are equal.

Preferably, a=b=c=d.

This creation provides an efficient combined magnetic core structure that can cover all the design requirements of power inductors for high-power power electronic converters. With flat wire technology, it can effectively improve product quality and production efficiency.

In order to make the above-mentioned and other purposes, features and advantages of this creation more obvious and understandable, the following specific examples are given in conjunction with the accompanying drawings, which are described in detail as follows.

In order to make the purpose, technical features and advantages of this creation clearer and clearer, the creation will be described in further detail below in conjunction with specific implementations and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of this creation. In addition, in the following description, the description of general knowledge is omitted to avoid unnecessary confusion of the concept of this creation.

As shown in Figure 1-4, in this creative embodiment, an efficient combined magnetic core structure includes a first magnetic core structure 10, a second magnetic core structure 20, a third magnetic core structure 30, and a fourth magnetic core structure 40. Describe each part in detail.

As shown in Figure 1-4, in this creative embodiment, an efficient combined magnetic core structure includes a first magnetic core structure 10, a second magnetic core structure 20, a third magnetic core structure 30, and a fourth magnetic core structure 40. The first magnetic core structure 10 and the second magnetic core structure 20 are arranged opposite to each other, and the third magnetic core structure 30 and the fourth magnetic core structure 40 are jointly supported between them. The first magnetic core The structure 10 is composed of a first magnetic cores 11 of the same specifications arranged in sequence along the X-axis direction, and the second magnetic core structure 20 is composed of b second magnetic cores 21 of the same specifications arranged in sequence along the X-axis direction. The third magnetic core structure 30 is composed of c-blocks of third magnetic cores 31 arranged in sequence along the Y-axis direction, and the fourth magnetic core structure 40 is composed of d-blocks of fourth magnetic cores 41 arranged in sequence along the Y-axis direction Composition, the first magnetic core 11 and the second magnetic core 21 are both rectangular parallelepipeds, the third magnetic core 31 and the fourth magnetic core 41 are both rounded rectangular parallelepipeds, where a, b, c and d Is a natural number.

In this creative embodiment, the first magnetic core 11 and the second magnetic core 21 are both made of powder core magnetic material, and each of the first magnetic core 11 and each of the second magnetic core 21 The lengths of each of the first magnetic core 11 and each of the second magnetic cores 21 are the same.

In this creative embodiment, the total width of a piece of the first magnetic core 11 is equal to the total width of b piece of the second magnetic core 21.

As shown in Figure 2-4, the length of the first magnetic core 11 and the second magnetic core 21 is expressed as: Cuboid_L, the width is expressed as: Cuboid_W, and the height is expressed as: Cuboid_H.

In this creative embodiment, the third magnetic core 31 and the fourth magnetic core 41 are both made of powder core magnetic material, and each of the third magnetic core 31 and each of the fourth magnetic core 41 The length of each of the third magnetic core 31 and each of the fourth magnetic core 41 is the same.

In this creative embodiment, the total height of c pieces of the third magnetic core 31 and the total height of d pieces of the fourth magnetic core 41 are equal.

As shown in Figure 2-4, the length of the third magnetic core 31 and the fourth magnetic core 41 is expressed as R_L, the width is expressed as R_W, and the height is expressed as R_H.

In this creative embodiment, a=b=c=d. In some other embodiments, a, b, c, and d may not be equal, and they can be selected according to actual needs.

In this creative embodiment, the first magnetic core structure 10, the second magnetic core structure 20, the third magnetic core structure 30, and the fourth magnetic core structure 40 are composed of three first The magnetic core 11, the second magnetic core 21, the third magnetic core 31, and the fourth magnetic core 41 are composed, and the first magnetic core 11, the second magnetic core 21, and the third magnetic core Both the magnetic core 31 and the fourth magnetic core 41 are made of powder core materials with the same initial magnetic permeability.

As shown in Figure 1-4, in this creative embodiment, the combination of rounded rectangular parallelepipeds R1_n and R2_n is used as the winding cylinder. Since the two sides are curved surfaces, the utilization rate for winding flat wires is high, and the winding volume is also small. The cross-sectional area of the magnetic circuit can also reach the maximum area utilization, and the air gap between the magnetic blocks can be adjusted freely, which is beneficial to the improvement of the overall anti-DC bias ability of the inductor.

The soft magnetic materials of the rounded rectangular parallelepiped R1_n and R2_n can all use powder core materials with the same initial permeability u, or core materials with different initial permeability u, so that the overall magnetic of the elliptical cylinder can be adjusted as required Resistance, after being matched, can obtain the combined permeability outside the standard magnetic material. The cuboids C1_n and C2_n must be made of powder core materials with the same initial permeability due to the magnetic resistance direction of the magnetic circuit, so as to ensure the uniform distribution of magnetic flux.

This creation provides an efficient combined magnetic core structure that can cover all the design requirements of power inductors for high-power power electronic converters. With flat wire technology, it can effectively improve product quality and production efficiency.

Although this creation has been disclosed in the above examples, it is not intended to limit this creation. Those with ordinary knowledge in the technical field to which this creation belongs can make some changes and modifications without departing from the spirit and scope of this creation. Therefore, the scope of protection of this creation shall be subject to the scope of the attached patent application.

10: The first core structure 11: The first core 20: Second core structure 21: The second core 30: The third core structure 31: third core 40: Fourth core structure 41: The fourth core C1_n, C2_n: Cuboid Cuboid_H: height Cuboid_L: length Cuboid_W: width R_H: height R_L: length R_W: width R1_n, R2_n: rounded rectangular parallelepiped

In order to more clearly illustrate the technical solutions in the creative embodiment or the prior art, the following will briefly introduce the drawings that need to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are merely the present For some of the created embodiments, for those with ordinary knowledge in the field, other schemas can be obtained based on these schemas without creative labor. Figure 1 is a schematic diagram of an efficient composite core structure provided by this creation. Figure 2 is a schematic front view of an efficient composite core structure provided by this creation. Figure 3 is a schematic side view of an efficient combined magnetic core structure provided by this creation. Fig. 4 is a schematic top view of an efficient combined magnetic core structure provided by this creation.

10: The first core structure

11: The first core

20: Second core structure

21: The second core

30: The third core structure

31: third core

40: Fourth core structure

41: The fourth core

Claims (10)

A combined magnetic core structure includes: a first magnetic core structure, a second magnetic core structure, a third magnetic core structure, and a fourth magnetic core structure. The first magnetic core structure and the second magnetic core structure are arranged oppositely, And the two are jointly supported by the third magnetic core structure and the fourth magnetic core structure. The first magnetic core structure is composed of a first magnetic cores of the same specifications arranged in sequence along the X axis, so The second magnetic core structure is composed of b pieces of second magnetic cores of the same specifications arranged in sequence along the X-axis direction, and the third magnetic core structure is composed of c pieces of third magnetic cores of the same specifications arranged in sequence along the Y-axis direction, so The fourth magnetic core structure is composed of d pieces of fourth magnetic cores of the same specifications arranged in sequence along the Y-axis direction, the first magnetic core and the second magnetic core are both cuboid, the third magnetic core and the The fourth magnetic core is all rounded rectangular parallelepiped, where a, b, c, and d are natural numbers. The combined magnetic core structure according to claim 1, wherein the first magnetic core and the second magnetic core are both made of powder core magnetic material. The combined magnetic core structure according to claim 1, wherein each of the first magnetic core and each of the second magnetic cores have the same length. The combined magnetic core structure according to claim 1, wherein each of the first magnetic core and each of the second magnetic cores have the same height. The combined magnetic core structure according to claim 1, wherein the total width of a piece of the first magnetic core is equal to the total width of b piece of the second magnetic core. According to the combined magnetic core structure of claim 1, the third magnetic core and the fourth magnetic core are both made of powder core magnetic material. The combined magnetic core structure according to claim 1, wherein each of the third magnetic core and each of the fourth magnetic cores have the same length. The combined magnetic core structure according to claim 1, wherein each of the third magnetic core and each of the fourth magnetic cores have the same width. The combined magnetic core structure according to claim 1, wherein the total height of c pieces of the third magnetic core is equal to the total height of d pieces of the fourth magnetic core. The composite core structure described in claim 1, where a=b=c=d.

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