Integrated inductor and integrated inductor equipment
By integrating the inductor structure and using a high-permeability inner column design, the problem of high cost in reducing the size and weight of magnetic components in existing technologies has been solved, achieving low-cost miniaturization of magnetic components and high-efficiency inductor design.
Patent Information
- Application Number
- CN202520469715.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-17
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-03-17
AI Technical Summary
Existing technologies require complex electrical and structural designs to reduce the size and weight of magnetic components, resulting in high costs.
The integrated inductor structure utilizes a magnetic core and winding design, and reduces the size and weight of the magnetic components by sharing horizontal and vertical inner columns. Combined with the high permeability inner and side column design, the inductor decoupling and magnetic flux cancellation are achieved using magnetic circuit theory.
This approach achieves a significant reduction in the size and weight of magnetic components at a lower cost, while also reducing inductor losses and heat dissipation requirements, and improving inductor efficiency.
Smart Images
Figure CN223911516U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of power electronics, especially to an integrated inductor and integrated inductor equipment. BACKGROUND
[0002] With the rapid development of the electronic industry, various electronic devices are emerging in endlessly. In electronic devices, magnetic devices are very common, especially in high-power electronic devices, magnetic devices play a role in power conversion, and are very important. However, magnetic devices are generally large in size and heavy in weight, which is not conducive to the development trend of miniaturization of electronic devices.
[0003] At present, in order to reduce the size and weight of the magnetic component, the prior art improves the working frequency of the magnetic component or optimizes the heat dissipation structure of the magnetic component from the system perspective to realize it, so that the magnetic component can withstand more power consumption with smaller size and weight. However, these two methods usually require complex electrical design and structural design, and the cost is high. SUMMARY
[0004] The utility model discloses an integrated inductor for realizing the reduction of the size and weight of the magnetic component at a lower cost, which comprises a magnetic core and a plurality of windings. The magnetic core comprises two groups of horizontal edge columns, two groups of vertical edge columns, one horizontal inner column and two groups of vertical inner columns. Each group of horizontal edge columns comprises at least two horizontal edge columns arranged in sequence along a first direction, each group of vertical edge columns comprises two vertical edge columns arranged oppositely, and each group of vertical inner columns comprises at least one vertical inner column.
[0005] The two groups of horizontal edge columns and the horizontal inner column are parallel to each other. The two groups of vertical edge columns and the horizontal inner column are located between the two groups of horizontal edge columns. The two groups of vertical edge columns are arranged in sequence along a second direction perpendicular to the first direction, and the horizontal inner column is located between the two groups of vertical edge columns. The horizontal inner column, one group of horizontal edge columns and one group of vertical edge columns form a first rectangle, and the horizontal inner column, another group of horizontal edge columns and another group of vertical edge columns form another first rectangle.
[0006] Each group of vertical inner columns is located in one of the first rectangles, and at least one vertical inner column of each group of vertical inner columns is parallel to the vertical edge column in the first rectangle. One end of at least one vertical inner column of each group of vertical inner columns is connected to the junction of the adjacent two horizontal edge columns in the first rectangle, and the other end is connected to the horizontal inner column in the first rectangle.
[0007] The part of the horizontal inner column, the adjacent vertical edge column and vertical inner column, and the horizontal edge column connected with the adjacent vertical edge column and vertical inner column form a second rectangle. And / or the part of the horizontal inner column, the adjacent two vertical inner columns, and the horizontal edge column connected with the adjacent two vertical inner columns form a second rectangle.
[0008] A winding is wound on the horizontal edge column or the vertical edge column of each second rectangle.
[0009] In one embodiment, at least one of the junctions of the horizontal edge column and the vertical edge column, the junction of the horizontal inner column and the vertical edge column, and the junction of the horizontal edge column and the vertical inner column is provided with an air gap sheet.
[0010] In one embodiment, at least one of the junctions of the horizontal edge column and the vertical edge column, the junction of the horizontal inner column and the vertical edge column, and the junction of the horizontal edge column and the vertical inner column is provided with a gap with a predetermined spacing.
[0011] In one embodiment, the magnetic permeability of the horizontal inner column and the two groups of vertical inner columns is higher than the magnetic permeability of the two groups of horizontal edge columns and the two groups of vertical edge columns.
[0012] In one embodiment, the magnetic permeability of the horizontal inner column and the two groups of vertical inner columns is 10 times or more than the magnetic permeability of the two groups of horizontal edge columns and the two groups of vertical edge columns.
[0013] In one embodiment, the horizontal inner column and the two groups of vertical inner columns are amorphous columnar structures, nanocrystalline columnar structures, or ferrite columnar structures.
[0014] In one embodiment, the two groups of horizontal edge columns and the two groups of vertical edge columns are metal magnetic powder core columnar structures.
[0015] The utility model embodiment further provides an integrated inductance device, and the integrated inductance device comprises the integrated inductance.
[0016] The integrated inductor provided by the embodiment of the utility model includes: a magnetic core and a plurality of windings; the magnetic core includes two groups of horizontal edge columns, two groups of vertical edge columns, one horizontal inner column and two groups of vertical inner columns; each group of horizontal edge columns includes at least two horizontal edge columns arranged in sequence along a first direction, each group of vertical edge columns includes two vertical edge columns oppositely arranged, and each group of vertical inner columns includes at least one vertical inner column; the two groups of horizontal edge columns and the horizontal inner column are parallel to each other; the two groups of vertical edge columns and the horizontal inner column are located between the two groups of horizontal edge columns; the two groups of vertical edge columns are arranged in sequence along a second direction perpendicular to the first direction, and the horizontal inner column is located between the two groups of vertical edge columns; the horizontal inner column, one group of horizontal edge columns and one group of vertical edge columns form a first rectangle, and the horizontal inner column, another group of horizontal edge columns and another group of vertical edge columns form another first rectangle; each group of vertical inner columns is located in one first rectangle, at least one vertical inner column of each group of vertical inner columns is parallel to the vertical edge column in the first rectangle, one end of at least one vertical inner column of each group of vertical inner columns is connected to the joint of the adjacent two horizontal edge columns in the first rectangle, and the other end is connected to the horizontal inner column in the first rectangle; wherein part of the horizontal inner column, the adjacent vertical edge column and the vertical inner column and the horizontal edge column connected with the adjacent vertical edge column and the vertical inner column form a second rectangle; and / or part of the horizontal inner column, the adjacent two vertical inner columns and the horizontal edge column connected with the adjacent two vertical inner columns form a second rectangle; a winding is wound on the horizontal edge column or the vertical edge column of each second rectangle. Compared with the existing magnetic device structure, the integrated inductor of the embodiment of the utility model can share one vertical inner column for each adjacent two inductors, and all inductors share one horizontal inner column, so that the volume and weight of the magnetic device can be reduced at a lower cost. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating labor.In the drawings:
[0018] Figure 1 The structural diagram of the integrated inductor provided in the embodiment of the utility model;
[0019] Figure 2 The structural schematic diagram of the integrated inductor when n = 2 provided in the embodiment of the utility model;
[0020] Figure 3 The structural schematic diagram of the integrated inductor when n = 3 provided in the embodiment of the utility model;
[0021] Figure 4 The structural schematic diagram of the integrated inductor provided in the embodiment of the utility model; Figure 2 The corresponding equivalent magnetic circuit model schematic diagram;
[0022] Figure 5 A structure schematic diagram of the integrated inductor with air gap provided in the embodiment of the present application is shown in the figure.
[0023] Figure 6 A structure schematic diagram of the integrated inductor with air gap provided in the embodiment of the present application is shown in the figure. Figure 5 A corresponding equivalent magnetic circuit model schematic diagram is shown in the figure.
[0024] Figure 7 A magnetic flux flow direction schematic diagram of the inductor provided in the embodiment of the present application is shown in the figure.
[0025] Figure 8 A structure schematic diagram of the non-integrated inductor with low magnetic permeability and same volume as the inductor 1 provided in the embodiment of the present application is shown in the figure. Figure 7
[0026] Figure 9 A structure schematic diagram of the integrated inductor with air gap provided in the embodiment of the present application is shown in the figure. Figure 8 A corresponding equivalent magnetic circuit model schematic diagram is shown in the figure. DETAILED DESCRIPTION
[0027] In order to make the purpose, technical scheme and advantages of the embodiment of the present application more clear and explicit, the embodiment of the present application is further described in detail below in combination with the drawings. Herein, the illustrative embodiment of the present application and its description are used to explain the present application, but not as a limitation of the present application.
[0028] In the description of the present application, "comprise", "include", "have", "contain" and the like are all open terms, namely, it means containing but not limited to. The description of the terms "one embodiment", "one specific embodiment", "some embodiments", "for example" and the like means that the specific features, structures or characteristics described in combination with the embodiment or example are contained in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. The order of the steps involved in the embodiments is used to illustrate the implementation of the present application, and the order of the steps is not limited, which can be adjusted appropriately as needed.
[0029] At present, in order to reduce the volume and weight of the magnetic component, the prior art realizes it by planning from the system angle, improving the working frequency of the magnetic component, or optimizing the heat dissipation structure of the magnetic component, so that the magnetic component can withstand more power consumption with smaller volume and weight. However, the two ways usually need more complex electrical design and structural design, and the cost is high.
[0030] Therefore, the embodiment of the present application provides an integrated inductor, which realizes the purpose of reducing the volume and weight of the magnetic component at low cost by using magnetic integration technology. Therefore, the embodiment of the present application provides an integrated inductor, which realizes the purpose of reducing the volume and weight of the magnetic component at low cost by using magnetic integration technology.
[0031] Figure 1 A structure diagram of an integrated inductor is provided in the embodiment of the present application. Figure 1 As shown in the figure, the integrated inductor comprises a magnetic core and a plurality of windings; the magnetic core comprises two groups of horizontal edge columns 1, two groups of vertical edge columns 2, one horizontal inner column 3 and two groups of vertical inner columns 4.
[0032] Each group of horizontal edge columns comprises at least two horizontal edge columns 1 arranged in sequence along a first direction x, each group of vertical edge columns comprises two vertical edge columns 2 arranged oppositely, and each group of vertical inner columns comprises at least one vertical inner column 4.
[0033] The two groups of horizontal edge columns 1 and the horizontal inner column 3 are parallel to each other; the two groups of vertical edge columns 4 and the horizontal inner column 3 are located between the two groups of horizontal edge columns 1; the two groups of vertical edge columns 2 are arranged in sequence along a second direction y perpendicular to the first direction x, and the horizontal inner column 3 is located between the two groups of vertical edge columns 2; based on this, the horizontal inner column 3, one group of horizontal edge columns 1 and one group of vertical edge columns 2 form a first rectangle H, the horizontal inner column 3, another group of horizontal edge columns 1 and another group of vertical edge columns 2 form another first rectangle H, and the edges where the horizontal inner columns of the two first rectangles are located coincide.
[0034] Each group of vertical inner columns is located in a first rectangle H, and at least one vertical inner column 4 of each group of vertical inner columns is parallel to the vertical edge column 2 in the first rectangle H; one end of the at least one vertical inner column 4 of each group of vertical inner columns is connected to the junction of the adjacent two horizontal edge columns 1 in the first rectangle H, and the other end is connected to the horizontal inner column 3; therefore, the number of vertical inner columns in each group of vertical inner columns is one less than the number of horizontal edge columns in each group of horizontal edge columns.
[0035] In this way, part of the horizontal inner column 3, the adjacent vertical edge column 2 and vertical inner column 4, and the horizontal edge column 1 connected to the adjacent vertical edge column 2 and vertical inner column 4 form a second rectangle A; and / or part of the horizontal inner column 3, the adjacent two vertical inner columns 4, and the horizontal edge column 1 connected to the adjacent two vertical inner columns 4 form a second rectangle B.
[0036] A winding 5 is wound on the horizontal edge column or the vertical edge column of each second rectangle A and B. As shown in the figure, Figure 1 in the second rectangle A, the winding 5 can be wound on the horizontal edge column 1 or the vertical edge column 2, and in the second rectangle B, the winding 5 can be wound on the horizontal edge column 1.
[0037] The integrated inductor in the embodiment of the present application shares one horizontal inner column for all inductors, and each adjacent two inductors share one vertical inner column; compared with the existing magnetic device structure, the integrated inductor of the embodiment of the present application can reduce the volume and weight of the magnetic component.
[0038] In practical implementation, assuming there are n horizontal posts (1) in each group of horizontal posts, where n ≥ 2, then there are n-1 vertical posts (4) in each group of vertical posts, resulting in 2n possible second rectangles. After winding a coil on either the horizontal or vertical post of each second rectangle, an inductor is formed; therefore... Figure 1 The middle section represents the integration of 2n inductors. (Reference) Figure 2 This utility model embodiment also provides a structural schematic diagram of the integrated inductor when n=2, and a reference Figure 3 This utility model embodiment also provides a structural schematic diagram of the integrated inductor when n=3. Figure 2 It is an integration of four inductors. Figure 3 It is an integration of 6 inductors.
[0039] In this embodiment of the invention, to avoid magnetic coupling, the permeability of the horizontal inner column 3 and the two sets of vertical inner columns 4 is higher than that of the two sets of horizontal side columns 1 and the two sets of vertical side columns 2. Furthermore, the permeability of the horizontal inner column 3 and the two sets of vertical inner columns 4 is 10 times or more than 10 times the permeability of the two sets of horizontal side columns 1 and the two sets of vertical side columns 2.
[0040] Based on this, the horizontal inner pillars and the two sets of vertical inner pillars in the integrated inductor can be amorphous columnar structures, nanocrystalline columnar structures, or ferrite columnar structures. The two sets of horizontal side pillars and the two sets of vertical side pillars can be metal magnetic powder core columnar structures.
[0041] The following continues... Figure 2 For example, based on the principle of magnetic circuits, it can be explained that the integrated inductor of this invention can reduce the size and weight of the inductor.
[0042] First, the principle of magnetic flux decoupling between two adjacent inductors in an integrated inductor is analyzed using magnetic circuit theory.
[0043] Figure 2 In the above, assume that the horizontal column magnetic circuit length of inductor 1 is L1, the vertical column magnetic circuit length is L2, and the vertical column magnetic circuit length of inductor 2 is L3; assume that the number of turns of the winding of inductor 1 is N, the current is I1, and the magnetic circuit areas of inductor 1 and inductor 2 are as follows:
[0044] The magnetic circuit area of the transverse column of inductor 1 is Ae1;
[0045] The magnetic circuit area of the vertical column of inductor 1 is Ae²;
[0046] The magnetic circuit area of the vertical column of inductor 2 is Ae3;
[0047] The magnetic circuit area of the transverse column of inductor 2 is Ae4;
[0048] The magnetic circuit area of the vertical inner column of inductor 1 is Ae5;
[0049] The magnetic circuit area of the inner column of inductor 1 is Ae6;
[0050] The magnetic circuit area of the vertical inner column of inductor 2 is Ae7.
[0051] The permeability of the side pillar is u 0; the permeability of the inner column is u 1.
[0052] According to magnetic circuit theory, it can be drawn as follows: Figure 4 The equivalent magnetic circuit model shown is, Figure 2 The equivalent magnetic circuit model of inductor 1 and inductor 2 is based on Figure 4 Analysis shows that:
[0053] The magnetic potential is N×I1;
[0054] R1 is the reluctance of the vertical column of inductor 1, and ;
[0055] R4 is the reluctance of the horizontal column of inductor 1, and ;
[0056] R5 is the reluctance of the vertical column of inductor 2, and ;
[0057] R6 is the reluctance of the horizontal column of inductor 2, and ;
[0058] R2 is the magnetic reluctance of the vertical inner column of inductor 1, and ;
[0059] R3 is the reluctance of the inner column of inductor 1, and ;
[0060] R7 is the reluctance of the vertical inner column of inductor 2, and ;
[0061] Normally, the magnetic circuit area of the inner column and the magnetic circuit area of the side column do not differ significantly, nor do their circuit lengths. Therefore, the difference in magnetic reluctance mainly lies in the permeability. In this embodiment, the permeability of the horizontal and vertical inner columns is much higher than that of the horizontal and vertical side columns, resulting in a much lower magnetic reluctance for the inner column than for the side column. Based on this, according to magnetic circuit theory, the magnetomotive force flowing through R3 is equal to that flowing through (R5+R6+R7). Therefore, it can be assumed that almost all the magnetic flux flows into R3 and not into the inductor 2 branch. Based on this, when the permeability of the horizontal and vertical inner columns is much higher than that of the horizontal and vertical side columns, decoupling of inductor 1 and inductor 2 can be achieved.
[0062] Based on the same principle, inductor 1 and inductor 3 can be decoupled, inductor 3 and inductor 4 can be decoupled, and inductor 2 and inductor 4 can be decoupled.
[0063] The above analysis is based on the assumption that the permeability of the horizontal inner column and the vertical inner column are the same, and the permeability of the horizontal side column and the vertical side column are also the same. However, if the permeability of the horizontal side column and the vertical side column are different, and the permeability of the horizontal inner column and the vertical inner column are also different, but the permeability of the horizontal inner column and the vertical inner column is much higher than the permeability of the horizontal side column and the vertical side column, then... Figure 4 The equivalent magnetic circuit model in the model still satisfies: Therefore, the magnetic flux of inductor 1 will not couple to inductor 2, and inductor 1 and inductor 2, inductor 1 and inductor 3, inductor 3 and inductor 4, and inductor 2 and inductor 4 can also be decoupled.
[0064] In this embodiment of the invention, an air gap may be provided at at least one of the joints between the horizontal and vertical side columns, the horizontal inner column and the vertical side column, and the horizontal side column and the vertical inner column; or a predetermined gap may be provided at at least one of the joints between the horizontal and vertical side columns, the horizontal inner column and the vertical side column, and the horizontal side column and the vertical inner column. For example, Figure 5 This is a schematic diagram of the structure of an integrated inductor with an air gap provided in an embodiment of the present invention. Figure 2 Based on the integrated inductor, the air gap of inductor 1 can be added to... Figure 5 One or more of points A, B, and C; the air gap of inductor 2 can be added to Figure 5 At one or more locations D, E, and F, the air gap can be an air gap plate or a void; no specific regulations are specified here. Figure 5 Specifically, it shows that inductor 1 has an air gap at point B, inductor 2 has an air gap at point E, and no air gaps are added at points A, C, D, and F.
[0065] The following analysis uses magnetic circuit theory. Figure 5 The diagram illustrates the principle of magnetic flux decoupling when inductor 1 and inductor 2 have an air gap.
[0066] According to magnetic circuit theory, draw as follows Figure 6 The equivalent magnetic circuit model shown is, Figure 5 Equivalent magnetic circuit models of inductors 1 and 2 with air gaps.
[0067] Figure 6 In the diagram, R11 is the air gap reluctance of inductor 1, and R51 is the air gap reluctance of inductor 2. Since the air gap is filled with air, its relative permeability is 1, which is much lower than the permeability of the side pillars. Therefore, the reluctances of R11 and R51 are relatively large, and the following equation still holds:
[0068]
[0069] Based on this, the magnetic flux generated by the magnetomotive force of inductor 1 on R3 mainly flows through R3. Even if no magnetic flux flows through the branch, inductor 1 and inductor 2 can still be decoupled; by the same principle, even if an air gap is added, inductor 1 and inductor 3, inductor 2 and inductor 4, and inductor 3 and inductor 4 can still be decoupled.
[0070] Next, based on the decoupling of magnetic flux in integrated inductors, we continue to use magnetic circuit theory to analyze the principle of reducing the size and weight of integrated inductors.
[0071] In this embodiment of the invention, the cancellation of magnetic flux within the inner cylinders can be achieved by rationally designing the winding direction of the coils of each inductor in the integrated inductor, i.e., the clockwise or counterclockwise winding of the coils. Specifically, Figure 7 A schematic diagram of the magnetic flux flow direction of the inductor provided in an embodiment of this utility model is shown below. Figure 7 As shown, the magnetic flux resides in the core (i.e., the side and inner pillars of the inductor), not in the air, and the magnetic fluxes of each inner pillar (i.e., the horizontal and vertical inner pillars) cancel each other out. Therefore, the magnetic flux of each inner pillar is relatively small. To achieve a higher magnetic flux density, inner pillars with smaller magnetic circuit areas can be used. Thus, each inner pillar can use a smaller volume magnetic pillar, further reducing the weight of the inductor. Based on the same principle, Figure 7 The same effect can be achieved by reversing the direction of each magnetic flux flow.
[0072] From the above analysis, it can be seen that the inner column reluctance is low; therefore, for any inductor, its inner column reluctance can be ignored. According to magnetic circuit theory (considering air gap reluctance), at this time... Figure 7 The inductance value of inductor 1 in the integrated inductor is:
[0073]
[0074] Figure 8 To and Figure 7 A non-integrated inductor with low permeability of the same volume as inductor 1, in order to Figure 8 As a comparison, integrated inductors reduce the size and weight of inductors. Figure 8 In the case where only the inner pillar material is replaced with the side pillar material, and there is no integration, the bottom and right pillars are made of low permeability materials, while the horizontal and vertical side pillars remain the same. The corresponding equivalent magnetic circuit model is as follows: Figure 9 As shown, Figure 9 In this diagram, R22 represents the reluctance of the right column, and R33 represents the reluctance of the bottom column. Since the right and bottom columns are made of low-permeability materials, their reluctance cannot be ignored and may be of the same value as R1, R4, and R11. According to magnetic circuit theory, at this point... Figure 8 The inductance value of the medium inductor is:
[0075]
[0076] Obviously, Figure 9 Compared to medium inductance magnetoresistance Figure 7 The magnetic reluctance of inductor 1 is greatly increased in order to achieve the same inductance value.Figure 9 The number of turns of the middle inductor coil Figure 7 The number of turns of the middle inductor 1 coil is increased, that is, the integrated inductor provided by the utility model can reduce the number of turns of the coil under the same inductance value, and the reduction of the number of turns of the coil can further reduce the size of the inductor side column (horizontal side column or vertical side column), further reduce the volume and weight of the total inductance; on the other hand, due to the reduction of the number of turns of the coil, the winding loss can be reduced; and the reduction of the size of the magnetic core can also reduce the magnetic loss; therefore, the integrated inductor provided by the utility model can further reduce the loss, which is beneficial to reducing the volume of the corresponding heat dissipation setting, so that the overall volume and weight are further reduced.
[0077] In summary, the integrated inductor provided by the utility model embodiment comprises a magnetic core and a plurality of windings; the magnetic core comprises two groups of horizontal side columns, two groups of vertical side columns, a horizontal inner column and two groups of vertical inner columns; each group of horizontal side columns comprises at least two horizontal side columns arranged in sequence along a first direction, each group of vertical side columns comprises two vertical side columns arranged oppositely, and each group of vertical inner columns comprises at least one vertical inner column; the two groups of horizontal side columns and the horizontal inner column are parallel to each other; the two groups of vertical side columns and the horizontal inner column are located between the two groups of horizontal side columns; the two groups of vertical side columns are arranged in sequence along a second direction perpendicular to the first direction, and the horizontal inner column is located between the two groups of vertical side columns; the horizontal inner column and one group of horizontal side columns and one group of vertical side columns form a first rectangle, and the horizontal inner column and another group of horizontal side columns and another group of vertical side columns form another first rectangle; each group of vertical inner columns is located in a first rectangle, and at least one vertical inner column of each group of vertical inner columns is parallel to the vertical side column in the first rectangle, one end of at least one vertical inner column of each group of vertical inner columns is connected to the junction of the adjacent two horizontal side columns in the first rectangle, and the other end is connected to the horizontal inner column in the first rectangle; wherein part of the horizontal inner column, the adjacent vertical side column and the vertical inner column, and the horizontal side column connected with the adjacent vertical side column and the vertical inner column form a second rectangle; and / or part of the horizontal inner column, the adjacent two vertical inner columns and the horizontal side column connected with the adjacent two vertical inner columns form a second rectangle; a winding is wound on the horizontal side column or the vertical side column of each second rectangle. Compared with the existing magnetic device structure, the integrated inductor of the utility model embodiment can share one vertical inner column for each adjacent two inductors, and all inductors can share one horizontal inner column, so that the volume and weight of the magnetic device can be reduced at a lower cost.
[0078] The utility model embodiment further provides an integrated inductor device, which comprises the integrated inductor. The integrated inductor device solves problems in the same principle as the integrated inductor, and the repeated parts will not be described again.
[0079] The above-described specific embodiments further specifically describe the purposes, technical solutions and beneficial effects of the present application, and it should be understood that the above-described specific embodiments are merely examples of the present application and are not intended to limit the protection scope of the present application, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. An integrated inductor, characterized by The magnetic core comprises two groups of horizontal edge columns, two groups of vertical edge columns, one horizontal inner column and two groups of vertical inner columns; each group of horizontal edge columns comprises at least two horizontal edge columns arranged in sequence along a first direction, each group of vertical edge columns comprises two vertical edge columns arranged oppositely, and each group of vertical inner columns comprises at least one vertical inner column; The two groups of horizontal edge columns and the horizontal inner column are parallel to each other; the two groups of vertical edge columns and the horizontal inner column are located between the two groups of horizontal edge columns; the two groups of vertical edge columns are arranged in sequence along a second direction perpendicular to the first direction, and the horizontal inner column is located between the two groups of vertical edge columns; the horizontal inner column and one group of horizontal edge columns and one group of vertical edge columns form a first rectangle, and the horizontal inner column and the other group of horizontal edge columns and the other group of vertical edge columns form another first rectangle; Each group of vertical inner columns is located in one of the first rectangles, and at least one vertical inner column of each group of vertical inner columns is parallel to the vertical edge column in the first rectangle; one end of at least one vertical inner column of each group of vertical inner columns is connected to the junction of the adjacent two horizontal edge columns in the first rectangle, and the other end is connected to the horizontal inner column in the first rectangle; The part of the horizontal inner column, the adjacent vertical edge column and vertical inner column, and the horizontal edge column connected to the adjacent vertical edge column and vertical inner column form a second rectangle; and / or the part of the horizontal inner column, the adjacent two vertical inner columns, and the horizontal edge column connected to the adjacent two vertical inner columns form a second rectangle; Each second rectangle has a winding wound on the horizontal edge column or the vertical edge column.
2. The integrated inductor of claim 1, wherein, At least one of the junctions of the horizontal edge column and the vertical edge column, the junctions of the horizontal inner column and the vertical edge column, and the junctions of the horizontal edge column and the vertical inner column is provided with an air gap sheet.
3. The integrated inductor of claim 1, wherein, At least one of the junctions of the horizontal edge column and the vertical edge column, the junctions of the horizontal inner column and the vertical edge column, and the junctions of the horizontal edge column and the vertical inner column is provided with a gap with a predetermined interval.
4. The integrated inductor of claim 1, wherein, The magnetic permeability of the horizontal inner column and the two groups of vertical inner columns is higher than the magnetic permeability of the two groups of horizontal edge columns and the two groups of vertical edge columns.
5. The integrated inductor of claim 4, wherein the first and second conductive layers are formed of a conductive material selected from the group consisting of copper, aluminum, silver, gold, and combinations thereof. The magnetic permeability of the horizontal inner column and the two groups of vertical inner columns is 10 times or more than the magnetic permeability of the two groups of horizontal edge columns and the two groups of vertical edge columns.
6. The integrated inductor of claim 5, wherein the first and second conductive layers are formed of a conductive material selected from the group consisting of copper, aluminum, silver, gold, and combinations thereof. The horizontal inner column and the two groups of vertical inner columns are amorphous columnar structure, nanocrystalline columnar structure or ferrite columnar structure.
7. The integrated inductor of claim 5, wherein the first and second conductive layers are formed of a conductive material selected from the group consisting of copper, aluminum, silver, gold, and combinations thereof. The two groups of horizontal edge columns and the two groups of vertical edge columns are metal magnetic powder core columnar structure.
8. An integrated inductive device, characterized by The integrated inductor comprises the integrated inductor according to any one of claims 1-7.