A magnetic integrated transformer

Abstract

The present invention discloses a magnetic integrated transformer, comprising: a winding support, an intermediate magnetic block, a left magnetic block and a right magnetic block, wherein a slot is arranged in the winding support, the intermediate magnetic block is arranged in the slot, the intermediate magnetic block is arranged with a through hole, the left magnetic block and the right magnetic block have the same structure and are respectively arranged on the winding support in an inserted manner, the left magnetic block comprises a central magnetic core and an external magnetic core, the central magnetic core is arranged in the through hole, and the thickness of the two sides of the intermediate magnetic block closest to the external magnetic core is 1.5 mm or 3.5 mm. The magnetic integrated transformer changes the leakage inductance of the magnetic integrated transformer by changing the thickness of the two sides of the intermediate magnetic block closest to the external magnetic core, has a simple structure, is easy to improve, and the leakage inductance accuracy of the improved magnetic integrated transformer is high.

Description

Technical Field

[0001] The present invention relates to the technical field of transformers, and in particular to a magnetic integrated transformer. Background Art

[0002] Magnetic integration technology is to wind two or more discrete magnetics (DM) in the converter, such as inductors and transformers, on a pair of magnetic cores, and concentrate them together in structure, which can reduce the volume and weight of magnetic devices, and sometimes reduce current ripple, reduce magnetic component losses, and improve the dynamic performance of power supplies, which is of great significance to improving the performance and power density of power supplies. Existing magnetic integrated transformers are large in size, have large leakage magnetic flux, low efficiency, and it is troublesome to change the leakage inductance of the transformer. Summary of the invention

[0003] In order to solve the problem that it is troublesome to change the leakage inductance of the existing magnetic integrated transformer, the present invention provides a magnetic integrated transformer. The specific technical solution of the present invention is as follows:

[0004] A magnetic integrated transformer comprises: a winding bracket, an intermediate magnetic block, a left magnetic block and a right magnetic block, wherein a slot is arranged in the winding bracket, the intermediate magnetic block is arranged in the slot, the intermediate magnetic block is provided with a through hole, the left magnetic block and the right magnetic block have the same structure and are respectively arranged on the winding bracket in an inserted manner, the left magnetic block comprises a central magnetic core and an outer magnetic core, the central magnetic core is arranged in the through hole, and the thickness of the two sides of the intermediate magnetic block closest to the outer magnetic core is 1.5 mm.

[0005] Furthermore, the winding bracket comprises a winding groove, which is respectively arranged on the left and right sides of the slot, and the left magnetic block and the right magnetic block are respectively inserted into the winding bracket from the left and right sides.

[0006] Furthermore, the winding bracket comprises a winding groove, which is respectively arranged on the upper and lower sides of the slot, and the left magnetic block and the right magnetic block are respectively inserted into the winding bracket from the upper and lower sides.

[0007] Furthermore, the through hole is elliptical or circular.

[0008] Furthermore, the shape of the middle magnetic block is trapezoidal.

[0009] A magnetic integrated transformer comprises: a winding bracket, an intermediate magnetic block, a left magnetic block and a right magnetic block, wherein a slot is arranged in the winding bracket, the intermediate magnetic block is arranged in the slot, the intermediate magnetic block is provided with a through hole, the left magnetic block and the right magnetic block have the same structure and are respectively arranged on the winding bracket in an inserted manner, the left magnetic block comprises a central magnetic core and an outer magnetic core, the central magnetic core is arranged in the through hole, and the thickness of the two sides of the intermediate magnetic block closest to the outer magnetic core is 3.5 mm.

[0010] Furthermore, the winding bracket comprises a winding groove, which is respectively arranged on the left and right sides of the slot, and the left magnetic block and the right magnetic block are respectively inserted into the winding bracket from the left and right sides.

[0011] Furthermore, the winding bracket comprises a winding groove, which is respectively arranged on the upper and lower sides of the slot, and the left magnetic block and the right magnetic block are respectively inserted into the winding bracket from the upper and lower sides.

[0012] Furthermore, the through hole is elliptical or circular.

[0013] Furthermore, the shape of the middle magnetic block is trapezoidal.

[0014] Compared with the existing technology, the beneficial effects of the present invention are: the magnetic integrated transformer described in the present application changes the leakage inductance of the magnetic integrated transformer by changing the thickness of the two sides of the middle magnetic block closest to the external magnetic core. The structure is simple and easy to improve. Moreover, the leakage inductance accuracy of the improved magnetic integrated transformer is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a horizontal magnetic integrated transformer in an embodiment of the present invention;

[0016] Figure 2 Schematic diagram of a horizontal magnetic integrated transformer according to an embodiment of the present invention Figure 1 ;

[0017] Figure 3 A schematic cross-sectional view of a horizontal magnetic integrated transformer in an embodiment of the present invention Figure 1 ;

[0018] Figure 4 Schematic diagram of a horizontal magnetic integrated transformer according to an embodiment of the present invention Figure 2 ;

[0019] Figure 5 A schematic cross-sectional view of a horizontal magnetic integrated transformer in an embodiment of the present invention Figure 2 ;

[0020] Figure 6 It is a structural schematic diagram of a vertical magnetic integrated transformer in an embodiment of the present invention;

[0021] Figure 7 It is an exploded schematic diagram of a vertical magnetic integrated transformer in one embodiment of the present invention;

[0022] Figure 8 A schematic cross-sectional view of a vertical magnetic integrated transformer in an embodiment of the present invention;

[0023] Fig. 9The figure is a schematic diagram of the dimensions of a magnetic integrated transformer in an embodiment of the present invention. DETAILED DESCRIPTION

[0024] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions.

[0025] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present invention.

[0026] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the present invention, "at least" means one or more, unless otherwise clearly and specifically defined.

[0027] In the present invention, unless otherwise specified and limited, the terms "assemble", "connect", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can also be a mechanical connection; it can be directly connected, or it can be connected through an intermediate medium, or the two elements can be internally connected. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In the invention, unless otherwise specified and limited, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being “above”, “below”, and “above” a second feature includes that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “above”, “below”, and “below” a second feature includes that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0029] The following is a further description of the specific embodiments of the present invention in conjunction with the drawings of the specification, so that the technical solution and its beneficial effects of the present invention are clearer and more explicit. The following description of the embodiments with reference to the drawings is exemplary and intended to explain the present invention, but cannot be understood as limiting the present invention.

[0030] like Figures 1 to 9 As shown, a magnetic integrated transformer includes: a winding bracket 1, an intermediate magnetic block 2, a left magnetic block 3 and a right magnetic block 4, wherein a slot 5 is provided in the winding bracket 1, winding grooves 6 are provided on both sides of the slot 5, a guide pin 7 is provided at the lower end of the winding bracket 1, and the guide pin 7 is connected to the coil in the winding groove 6, the intermediate magnetic block 2 is provided in the slot 5, the intermediate magnetic block 2 is provided with a through hole 10, the left magnetic block 3 and the right magnetic block 4 have the same structure and are respectively provided on the winding bracket 1 in an inserted manner, the left magnetic block 3 includes a central magnetic core 8 and an external magnetic core 9, the central magnetic core 8 is provided in the through hole 10, the thickness of the two sides of the intermediate magnetic block 2 closest to the external magnetic core 9 is 1.5mm, and the leakage inductance of this type of magnetic integrated transformer is 1.2MH. The intermediate magnetic block 2, the left magnetic block 3 and the right magnetic block 4 are ferrite magnetic cores or silicon steel sheets. The left magnetic block 3 is a mountain-shaped structure.

[0031] As one embodiment, the winding bracket 1 includes a winding groove 6, which is respectively arranged on the left and right sides of the slot 5, and the left magnetic block 3 and the right magnetic block 4 are respectively inserted into the winding bracket 1 from the left and right sides. The magnetic integrated transformer of this structure is a horizontal magnetic integrated transformer.

[0032] As one embodiment, the winding bracket 1 includes a winding groove 6, which is respectively arranged on the upper and lower sides of the slot 5, and the left magnetic block 3 and the right magnetic block 4 are respectively inserted into the winding bracket 1 from the upper and lower sides. The magnetic integrated transformer of this structure is a vertical magnetic integrated transformer.

[0033] As one embodiment, the through hole 10 is oval or circular. The oval through hole 10 can reduce the weight of the middle magnetic block 2 and make it easier to control the thickness of the two sides of the middle magnetic block 2 closest to the outer magnetic core 9.

[0034] As one embodiment, the middle magnetic block 2 is in a trapezoidal shape. Alternatively, the lower half is in a square shape, and both sides and the top of the upper half are convex. Alternatively, the lower half is in a circular shape, and both sides and the top of the upper half are convex.

[0035] A magnetic integrated transformer comprises: a winding bracket 1, an intermediate magnetic block 2, a left magnetic block 3 and a right magnetic block 4, wherein a slot 5 is provided in the winding bracket 1, the intermediate magnetic block 2 is arranged in the slot 5, the intermediate magnetic block 2 is provided with a through hole 10, the left magnetic block 3 and the right magnetic block 4 have the same structure and are respectively arranged on the winding bracket 1 in an inserted manner, the left magnetic block 3 comprises a central magnetic core 8 and an external magnetic core 9, the central magnetic core 8 is arranged in the through hole 10, the thickness of the two sides of the intermediate magnetic block 2 closest to the external magnetic core 9 is 3.5 mm, and the leakage inductance of this type of magnetic integrated transformer is 2MH.

[0036] As one embodiment, the winding bracket 1 includes a winding groove 6, which is respectively arranged on the left and right sides of the slot 5, and the left magnetic block 3 and the right magnetic block 4 are respectively inserted into the winding bracket 1 from the left and right sides.

[0037] As one embodiment, the winding bracket 1 includes a winding groove 6, which is respectively arranged on the upper and lower sides of the slot 5, and the left magnetic block 3 and the right magnetic block 4 are respectively inserted into the winding bracket 1 from the upper and lower sides.

[0038] As one embodiment, the through hole 10 is oval or circular.

[0039] As one embodiment, the shape of the intermediate magnetic block 2 is trapezoidal.

[0040] If the magnetic integrated transformer wants other leakage inductance values, it can be achieved by simply changing the thickness of the two sides of the middle magnetic block 2 closest to the outer magnetic core 9. The structure is simple and easy to implement. Moreover, the leakage inductance of the magnetic integrated transformer can be adjusted from 1.2MH to 400MH.

[0041] The magnetic integrated transformer described in the present application changes the leakage inductance of the magnetic integrated transformer by changing the thickness of the two sides of the middle magnetic block 2 closest to the external magnetic core 9. The structure is simple and the improvement is convenient. After the improvement, the leakage inductance accuracy of the magnetic integrated transformer is higher.

[0042] In the description of the specification, the description with reference to the terms "one embodiment", "preferably", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention, and the schematic expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. The connection method connected in the description of the specification has obvious effects and practical effectiveness.

[0043] Through the description of the above structure and principle, technicians in the relevant technical field should understand that the present invention is not limited to the above-mentioned specific implementation methods. Improvements and substitutions based on the present invention using the well-known technology in the field all fall within the protection scope of the present invention and should be defined by the claims.

Claims

1. A magnetic integrated transformer, characterized in that: include: A winding bracket, an intermediate magnetic block, a left magnetic block and a right magnetic block, wherein the winding bracket is provided with a slot, the intermediate magnetic block is arranged in the slot, the intermediate magnetic block is provided with a through hole, the left magnetic block and the right magnetic block have the same structure and are respectively arranged on the winding bracket in an inserted manner, the left magnetic block includes a central magnetic core and an outer magnetic core, the central magnetic core is arranged in the through hole, and the thickness of the two sides of the intermediate magnetic block closest to the outer magnetic core is 1.5 mm.

2. The magnetic integrated transformer according to claim 1, characterized in that: The winding bracket comprises a winding groove, which is respectively arranged on the left and right sides of the slot, and the left magnetic block and the right magnetic block are respectively inserted into the winding bracket from the left and right sides.

3. The magnetic integrated transformer according to claim 1, characterized in that: The winding bracket comprises a winding groove, which is respectively arranged at the upper and lower sides of the slot, and the left magnetic block and the right magnetic block are respectively inserted into the winding bracket from the upper and lower sides.

4. The magnetic integrated transformer according to claim 1, characterized in that: The through hole is oval or circular.

5. The magnetic integrated transformer according to claim 4, characterized in that: The middle magnetic block is in a trapezoidal shape.

6. A magnetic integrated transformer, characterized in that: include: A winding bracket, an intermediate magnetic block, a left magnetic block and a right magnetic block, wherein the winding bracket is provided with a slot, the intermediate magnetic block is arranged in the slot, the intermediate magnetic block is provided with a through hole, the left magnetic block and the right magnetic block have the same structure and are respectively arranged on the winding bracket in an inserted manner, the left magnetic block includes a central magnetic core and an outer magnetic core, the central magnetic core is arranged in the through hole, and the thickness of the two sides of the intermediate magnetic block closest to the outer magnetic core is 3.5 mm.

7. The magnetic integrated transformer according to claim 6, characterized in that: The winding bracket comprises a winding groove, which is respectively arranged on the left and right sides of the slot, and the left magnetic block and the right magnetic block are respectively inserted into the winding bracket from the left and right sides.

8. The magnetic integrated transformer according to claim 6, characterized in that: The winding bracket comprises a winding groove, which is respectively arranged at the upper and lower sides of the slot, and the left magnetic block and the right magnetic block are respectively inserted into the winding bracket from the upper and lower sides.

9. The magnetic integrated transformer according to claim 6, characterized in that: The through hole is oval or circular.

10. The magnetic integrated transformer according to claim 9, characterized in that: The middle magnetic block is in a trapezoidal shape.

Images