A matrix magnetic element

Abstract

The utility model discloses a kind of matrix type magnetic components, comprising: coupling inductance unit, transformer unit and magnetic core, wherein, coupling inductance unit is spliced by X coupling inductance, X coupling inductance is mutually connected in series / parallel, transformer unit is spliced by Y transformer with center-tapped, Y transformer primary side is mutually connected in series / parallel, secondary side is mutually connected in series / parallel;Magnetic core includes: X inductor magnetic column, Y transformer magnetic column and Z magnetic side column;Wherein, Z magnetic side column is oppositely arranged between first magnetic cover and second magnetic cover;X inductor magnetic column and Y transformer magnetic column are arranged in the mode of staggered arrangement / continuous arrangement between first magnetic cover and second magnetic cover, and all are vertically arranged with first magnetic cover and second magnetic cover.Not only reduce the volume of magnetic core, but also can more flexibly set winding, the adopted winding is finer, and manufacturing difficulty is lower.

Description

Technical Field

[0001] This utility model relates to the field of electrical component technology, specifically to a matrix magnetic component. Background Technology

[0002] Improving the efficiency and power density of charging piles is extremely important. Separate inductors and transformers occupy a large volume, weight, and incur significant losses, and their wiring is complex and costly. Therefore, magnetic integration technology can be used to integrate inductors and transformers into a single magnetic core, reducing the overall size and losses of the magnetic components and improving the efficiency and power density of the converter.

[0003] In related technologies, when designing integrated inductors and transformers, the core of the integrated components is large, the winding is thick, and the manufacturing is difficult in high-power applications. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a matrix magnetic element. By disassembling a coupled inductor into multiple coupled inductors and a transformer into multiple transformers, and then integrating multiple coupled inductors and multiple transformers into a magnetic core, the magnetic core volume is reduced, the winding can be set more flexibly, the winding can be thinner, and the manufacturing difficulty is lower.

[0005] The technical solution adopted in this utility model is as follows: A matrix magnetic element includes: a coupled inductor unit, a transformer unit, and a magnetic core. The coupled inductor unit is composed of X coupled inductors connected in series / parallel. The transformer unit is composed of Y transformers with center taps connected in series / parallel, and their primary and secondary sides are connected in series / parallel. The magnetic core includes: a first magnetic cover, a second magnetic cover, X inductor magnetic pillars, Y transformer magnetic pillars, and Z magnetic side pillars. The first magnetic cover and the second magnetic cover are arranged opposite to each other. Z magnetic edge posts are arranged opposite each other between the first magnetic cover and the second magnetic cover, and are all perpendicular to the first magnetic cover and the second magnetic cover; X inductor magnetic posts and Y transformer magnetic posts are arranged in an alternating / continuous manner between the first magnetic cover and the second magnetic cover, and are all perpendicular to the first magnetic cover and the second magnetic cover; each coupled inductor winding is wound on the corresponding inductor magnetic post; and the primary winding and secondary winding of each transformer are wound on the corresponding transformer magnetic post.

[0006] Specifically, when X inductor magnetic pillars and Y transformer magnetic pillars are arranged in an alternating manner between the first magnetic cover and the second magnetic cover, the magnetic flux generated on adjacent inductor magnetic pillars and transformer magnetic pillars is in opposite directions; when X inductor magnetic pillars and Y transformer magnetic pillars are arranged in a continuous manner between the first magnetic cover and the second magnetic cover, the magnetic flux generated on two adjacent inductor magnetic pillars or two adjacent transformer magnetic pillars is in opposite directions.

[0007] Specifically, the X inductor magnetic pillars and the Y transformer magnetic pillars are arranged in an alternating manner between the first magnetic cover and the second magnetic cover, including: in each row / column of the first magnetic cover and the second magnetic cover, the inductor magnetic pillars and the transformer magnetic pillars are arranged alternately.

[0008] Specifically, the X inductor magnetic pillars and the Y transformer magnetic pillars are arranged in a continuous manner between the first magnetic cover and the second magnetic cover, including: X inductor magnetic pillars are arranged continuously in one row of the first magnetic cover and the second magnetic cover, and Y transformer magnetic pillars are arranged continuously in another row of the first magnetic cover and the second magnetic cover; or, X inductor magnetic pillars are arranged continuously in one column of the first magnetic cover and the second magnetic cover, and Y transformer magnetic pillars are arranged continuously in another column of the first magnetic cover and the second magnetic cover.

[0009] Specifically, an air gap is formed on the magnetic column of the inductor.

[0010] Specifically, an air gap is formed on the transformer magnetic column.

[0011] The beneficial effects of this utility model are: This invention decomposes a single coupled inductor into multiple coupled inductors and a single transformer into multiple transformers, and then integrates the multiple coupled inductors and multiple transformers into a single magnetic core. This not only reduces the size of the magnetic core but also allows for more flexible winding configuration, uses finer windings, and reduces manufacturing difficulty. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of a matrix magnetic element according to an embodiment of the present invention; Figure 2 This is an equivalent schematic diagram of a matrix magnetic element according to a specific embodiment of the present invention. Figure 3 This is a schematic diagram of the core structure of a matrix magnetic element when X=2, Y=2, Z=4 according to a specific embodiment of the present invention. Figure 4This is a schematic diagram of the core structure of a matrix magnetic element when X=4, Y=4, Z=2 according to a specific embodiment of the present invention. Figure 5 This is a schematic diagram showing the direction of current flow and magnetic flux generated in a matrix magnetic element when X=2, Y=2, Z=4, according to a specific embodiment of the present invention. Figure 6 This is a schematic diagram showing the direction of current flow and magnetic flux generated within a matrix magnetic element when X=4, Y=4, Z=2, according to a specific embodiment of this utility model. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Figure 1 This is a schematic diagram of a matrix magnetic element according to an embodiment of the present invention.

[0015] like Figure 1 As shown, the matrix magnetic element in this embodiment of the present invention may include a coupled inductor unit 10, a transformer unit 20, and a magnetic core ( Figure 1 (Not specifically shown in the text).

[0016] The coupling inductor unit 10 is composed of X coupling inductors 11 connected in series or parallel. The transformer unit 20 is composed of Y transformers 21 with center taps connected in series or parallel, with the primary sides and secondary sides of the Y transformers 21 connected in series or parallel. Specifically, the X coupling inductors 11 can be connected in series, in parallel, or both simultaneously. The Y transformers 21 with center taps can be connected in series on both the primary and secondary sides, in series on both the primary and secondary sides, in parallel on both the primary and secondary sides, in parallel on both the primary and secondary sides, in parallel on both the primary and secondary sides, or in a combination of both simultaneously.

[0017] It should be noted that, Figure 1 The example only includes two coupled inductors 11 and two center-tapped transformers 21, i.e., X = 2 and Y = 2. The two coupled inductors 11 are connected in parallel, and the primary windings of the two transformers 21 are connected in parallel, while the secondary windings are connected in series. Of course, there may be more coupled inductors 11 and / or more center-tapped transformers 21, and the connection method can be customized according to actual needs. Examples will not be provided here.

[0018] It should be noted that the equivalent schematic diagram of the matrix magnetic element of this utility model can be shown as follows: Figure 2 As shown, that is, the schematic diagram of the matrix magnetic element in this embodiment of the present invention can be first derived from... Figure 2 The coupled inductors in the diagram are decomposed into X coupled inductors, and the center-tapped transformers are decomposed into Y center-tapped transformers. Then, based on the actual application scenario, the series and parallel connections of the decomposed coupled inductors and center-tapped transformers are adjusted to form the final product. Figure 2 The coupling inductor in this invention is the coupling inductor unit. Figure 2 The transformer with a center tap is the transformer unit in this utility model.

[0019] The magnetic core may include: a first magnetic cover, a second magnetic cover, X inductor magnetic pillars, Y transformer magnetic pillars, and Z magnetic side pillars. The first and second magnetic covers are positioned opposite each other; the Z magnetic side pillars are positioned opposite each other between the first and second magnetic covers, and are all perpendicular to the first and second magnetic covers; the X inductor magnetic pillars and Y transformer magnetic pillars are arranged in an alternating / continuous manner between the first and second magnetic covers, and are all perpendicular to the first and second magnetic covers; each coupled inductor winding is wound on its corresponding inductor magnetic pillar, and the primary and secondary windings of each transformer are wound on their corresponding transformer magnetic pillars.

[0020] In one embodiment of this utility model, X inductor magnetic pillars and Y transformer magnetic pillars are arranged in an alternating manner between the first magnetic cover and the second magnetic cover, including: in each row / column of the first magnetic cover and the second magnetic cover, the inductor magnetic pillars and the transformer magnetic pillars are alternately arranged.

[0021] Specifically, taking X as 2, Y as 2, and Z as 4 as an example, in a specific embodiment of this utility model, as follows: Figure 3 As shown, the magnetic core may include: two inductor magnetic pillars (a first inductor magnetic pillar 110 and a second inductor magnetic pillar 120, respectively), two transformer magnetic pillars (a first transformer magnetic pillar 210 and a second transformer magnetic pillar 220, respectively), and four magnetic side pillars (a first magnetic side pillar 310, a second magnetic side pillar 320, a third magnetic side pillar 330, and a fourth magnetic side pillar 340, respectively). The two inductor magnetic pillars and the two transformer magnetic pillars are arranged in an alternating pattern between the first and second magnetic covers. Specifically, as shown... Figure 3 As shown, the first row contains the first transformer magnetic post 210 and the first inductor magnetic post 110 arranged sequentially, and the second row contains the second inductor magnetic post 120 and the second transformer magnetic post 220 arranged sequentially. The windings of each coupled inductor are wound around the corresponding inductor magnetic post, and the primary windings of each transformer are wound around the corresponding transformer magnetic post. It can be understood that the secondary windings of each transformer are also wound around the corresponding transformer magnetic post.

[0022] In another specific embodiment of this utility model, X inductor magnetic pillars and Y transformer magnetic pillars are arranged in a continuous manner between the first magnetic cover and the second magnetic cover, including: X inductor magnetic pillars are continuously arranged in one row of the first magnetic cover and the second magnetic cover, and Y transformer magnetic pillars are continuously arranged in another row of the first magnetic cover and the second magnetic cover; or, X inductor magnetic pillars are continuously arranged in one column of the first magnetic cover and the second magnetic cover, and Y transformer magnetic pillars are continuously arranged in another column of the first magnetic cover and the second magnetic cover.

[0023] Specifically, taking X as 4, Y as 4, and Z as 2 as an example, in a specific embodiment of this utility model, as follows... Figure 4 As shown, the magnetic core may include: four inductor magnetic pillars (first inductor magnetic pillar 110, second inductor magnetic pillar 120, third inductor magnetic pillar 130, and fourth inductor magnetic pillar 140), four transformer magnetic pillars (first transformer magnetic pillar 210, second transformer magnetic pillar 220, third transformer magnetic pillar 230, and fourth transformer magnetic pillar 240), and two magnetic side pillars (first magnetic side pillar 310 and second magnetic side pillar 320). The four inductor magnetic pillars and four transformer magnetic pillars are arranged continuously between the first and second magnetic covers. Specifically, as shown... Figure 4 As shown, the first row consists of a first inductor magnetic post 110, a second inductor magnetic post 120, a third inductor magnetic post 130, and a fourth inductor magnetic post 140 arranged consecutively. The second row consists of a first transformer magnetic post 210, a second transformer magnetic post 220, a third transformer magnetic post 230, and a fourth transformer magnetic post 240 arranged consecutively. The windings of each coupled inductor are wound around the corresponding inductor magnetic post, and the primary windings of each transformer are wound around the corresponding transformer magnetic post. It can be understood that the secondary windings of each transformer are also wound around the corresponding transformer magnetic post.

[0024] Therefore, by disassembling a single coupled inductor into multiple coupled inductors and a single transformer into multiple transformers, and then integrating the multiple coupled inductors and multiple transformers into a single magnetic core, not only is the size of the magnetic core reduced, but the winding can be set more flexibly, the winding can be thinner, and the manufacturing difficulty is lower.

[0025] In one embodiment of this utility model, when X inductor magnetic columns and Y transformer magnetic columns are arranged in an alternating manner between the first magnetic cover and the second magnetic cover, the magnetic flux generated on adjacent inductor magnetic columns and transformer magnetic columns is in opposite directions.

[0026] Specifically, taking X = 2, Y = 2, and Z = 4 as an example, such as... Figure 5 As shown, combined with Figure 1The schematic diagram of the matrix magnetic element shows that, based on the current flow direction of the input current in the matrix magnetic element, the winding directions of each coupled inductor winding on the first inductor magnetic post 110 and the second inductor magnetic post 120 are set, as are the winding directions of the primary and secondary windings of each transformer on the first transformer magnetic post 210 and the second transformer magnetic post 220. This ensures that the magnetic flux generated on the first transformer magnetic post 210 and the first inductor magnetic post 110 are in opposite directions, the magnetic flux generated on the first transformer magnetic post 210 and the second inductor magnetic post 120 are in opposite directions, the magnetic flux generated on the second transformer magnetic post 220 and the first inductor magnetic post 110 are in opposite directions, and the magnetic flux generated on the second transformer magnetic post 220 and the second inductor magnetic post 120 are in opposite directions. The staggered arrangement of the two inductor magnetic posts and the two transformer magnetic posts is as follows: Figure 3 As shown. Among them, Figure 5 In the diagram, arrows indicate the direction of current flow, · and × represent different magnetic flux directions, thin lines represent the windings of each coupled inductor and the primary windings of each transformer, and thick lines represent the secondary windings of each transformer.

[0027] Therefore, by adjusting the winding direction of the coupled inductor and the primary winding direction of the transformer with the center tap, the magnetic flux directions of adjacent magnetic columns are reversed, thereby reducing the magnetic flux in the magnetic cover and reducing the core loss.

[0028] In another embodiment of this utility model, when X inductor magnetic columns and Y transformer magnetic columns are arranged in a continuous manner between the first magnetic cover and the second magnetic cover, the magnetic flux generated on two adjacent inductor magnetic columns or two adjacent transformer magnetic columns is in opposite directions.

[0029] Specifically, taking X = 4, Y = 4, and Z = 2 as an example, such as... Figure 6 As shown, combined with Figure 1As shown in the schematic diagram of the matrix magnetic element, based on the current flow direction of the input current in the matrix magnetic element, the winding directions of each coupled inductor on the first inductor magnetic post 110, the second inductor magnetic post 120, the third inductor magnetic post 130, and the fourth inductor magnetic post 140 are set, as are the winding directions of the primary and secondary windings of each transformer on the first transformer magnetic post 210, the second transformer magnetic post 220, the third transformer magnetic post 230, and the fourth transformer magnetic post 240, so that the magnetic flux generated on the first inductor magnetic post 110 and the second inductor magnetic post 120... The magnetic flux generated on the second inductor magnetic post 120 and the third inductor magnetic post 130 are in opposite directions; the magnetic flux generated on the third inductor magnetic post 130 and the fourth inductor magnetic post 140 is in opposite directions; the magnetic flux generated on the first transformer magnetic post 210 and the second transformer magnetic post 220 is in opposite directions; the magnetic flux generated on the second transformer magnetic post 220 and the third transformer magnetic post 230 is in opposite directions; and the magnetic flux generated on the third transformer magnetic post 230 and the fourth transformer magnetic post 240 is in opposite directions. The continuous arrangement of the four inductor magnetic posts and the four transformer magnetic posts is as follows: Figure 4 As shown. Among them, Figure 6 In the diagram, arrows indicate the direction of current flow, · and × represent different magnetic flux directions, thin lines represent the windings of each coupled inductor and the primary windings of each transformer, and thick lines represent the secondary windings of each transformer.

[0030] It should be noted that when the number of magnetic columns in the inductor and the number of magnetic columns in the transformer are the same, such as Figure 6 As shown, both the inductor and transformer have four magnetic pillars. The windings of the coupled inductor and the primary winding of the transformer with a center tap can use a winding cancellation method to reduce winding losses. Adjusting the direction of the coupled inductor winding and the primary winding direction of the transformer with a center tap so that the magnetic flux directions of adjacent groups of magnetic pillars are opposite can reduce the magnetic flux in the magnetic cover and reduce core losses.

[0031] In one embodiment of this utility model, an air gap may be formed on the magnetic column of the inductor.

[0032] In one embodiment of this utility model, an air gap is formed on the transformer magnetic column.

[0033] Specifically, air gaps can be created in the inductor cores and / or transformer cores to ensure inductance.

[0034] Additionally, it should be noted that in one embodiment of this utility model, holes or slots can be made on the inductor magnetic column and transformer magnetic column, or on the magnetic edge column, to enhance the heat dissipation effect of the magnetic components.

[0035] In summary, the matrix magnetic element according to the embodiment of this utility model includes: a coupled inductor unit, a transformer unit, and a magnetic core. The coupled inductor unit is composed of X coupled inductors connected in series / parallel. The transformer unit is composed of Y transformers with center taps connected in series / parallel, with the primary windings and secondary windings of the Y transformers connected in series / parallel. The magnetic core includes: a first magnetic cover, a second magnetic cover, X inductor magnetic pillars, Y transformer magnetic pillars, and Z magnetic side pillars. The first and second magnetic covers are positioned opposite each other. The Z magnetic side pillars are positioned opposite each other between the first and second magnetic covers, and are all perpendicular to the first and second magnetic covers. The X inductor magnetic pillars and Y transformer magnetic pillars are arranged in an alternating / continuous manner between the first and second magnetic covers, and are all perpendicular to the first and second magnetic covers. Each coupled inductor winding is wound on a corresponding inductor magnetic pillar, and the primary and secondary windings of each transformer are wound on a corresponding transformer magnetic pillar. Therefore, by disassembling a single coupled inductor into multiple coupled inductors and a single transformer into multiple transformers, and then integrating the multiple coupled inductors and multiple transformers into a single magnetic core, not only is the size of the magnetic core reduced, but the winding can be set more flexibly, the winding can be thinner, and the manufacturing difficulty is lower.

[0036] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. "A plurality of" means two or more, unless otherwise explicitly specified.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0040] Furthermore, the functional units in the various embodiments of this utility model can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0041] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A matrix magnetic element, characterized in that, include: The system comprises a coupled inductor unit, a transformer unit, and a magnetic core. The coupled inductor unit is composed of X coupled inductors connected in series / parallel. The transformer unit is composed of Y transformers with center taps connected in series / parallel on their primary and secondary sides. The magnetic core includes a first magnetic cover, a second magnetic cover, X inductor magnetic pillars, Y transformer magnetic pillars, and Z magnetic edge pillars. The first magnetic cover and the second magnetic cover are arranged opposite to each other; Z magnetic edge posts are arranged opposite to each other between the first magnetic cover and the second magnetic cover, and are all arranged perpendicular to the first magnetic cover and the second magnetic cover; X inductor magnetic pillars and Y transformer magnetic pillars are arranged in an alternating / continuous manner between the first magnetic cover and the second magnetic cover, and are all perpendicular to the first magnetic cover and the second magnetic cover. Each coupled inductor winding is wound on the corresponding inductor magnetic pillar, and the primary winding and secondary winding of each transformer are wound on the corresponding transformer magnetic pillar.

2. The matrix magnetic element according to claim 1, characterized in that, When X inductor magnetic pillars and Y transformer magnetic pillars are arranged in an alternating manner between the first magnetic cover and the second magnetic cover, the magnetic flux generated on adjacent inductor magnetic pillars and transformer magnetic pillars is in opposite directions. When X inductor magnetic pillars and Y transformer magnetic pillars are arranged in a continuous manner between the first magnetic cover and the second magnetic cover, the magnetic flux generated on two adjacent inductor magnetic pillars or two adjacent transformer magnetic pillars is in opposite directions.

3. The matrix magnetic element according to claim 1 or 2, characterized in that, X inductor magnetic pillars and Y transformer magnetic pillars are arranged in an alternating pattern between the first magnetic cover and the second magnetic cover, including: In each row / column of the first magnetic cover and the second magnetic cover, the inductor magnetic posts and the transformer magnetic posts are arranged alternately.

4. The matrix magnetic element according to claim 1 or 2, characterized in that, X inductor magnetic pillars and Y transformer magnetic pillars are arranged in a continuous manner between the first magnetic cover and the second magnetic cover, including: On one row of the first magnetic cover and the second magnetic cover, X inductor magnetic pillars are arranged consecutively, and on the other row of the first magnetic cover and the second magnetic cover, Y transformer magnetic pillars are arranged consecutively; or, on one column of the first magnetic cover and the second magnetic cover, X inductor magnetic pillars are arranged consecutively, and on the other column of the first magnetic cover and the second magnetic cover, Y transformer magnetic pillars are arranged consecutively.

5. The matrix magnetic element according to claim 1, characterized in that, An air gap is formed on the magnetic column of the inductor.

6. The matrix magnetic element according to claim 1, characterized in that, An air gap is provided on the transformer's magnetic column.

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