Magnetic core bonding type high-power inductor

Abstract

The utility model provides a magnetic core bonding type high-power inductor which comprises a base, a magnetic core arranged on the base and a coil arranged on the magnetic core. A supporting assembly used for supporting the magnetic core is arranged at the position, corresponding to the magnetic core, of the base, and a limiting assembly used for limiting the magnetic core and a positioning assembly used for positioning the coil are arranged at the positions, corresponding to the periphery of the magnetic core, of the base. The magnetic core comprises a plurality of magnetic blocks, and the magnetic blocks are connected in a bonding mode through adhesives. The magnetic core bonding type high-power inductor has the advantages of being stable and reliable in structure and easy to assemble. By adopting the magnetic core formed by bonding the plurality of magnetic blocks, the processing is convenient, a complicated mold does not need to be opened, the cost of a magnetic core manufacturer is saved, the assembly of an inductor manufacturer is convenient, and meanwhile, the effect of uniformizing air gaps is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of magnetic element, especially a kind of magnetic core bonding type high-power inductor. BACKGROUND

[0002] In prior art, the size of the magnetic core of the inductor is proportional to the output power, the larger the size of the magnetic core, the more the stored magnetic energy, so the inductor with larger power will select the magnetic core with larger size, but the larger the size of the magnetic core, the longer the glue removal time required, which increases the risk of cracks and cracking of the magnetic core, and also makes the mold more complex to manufacture, and the cost increases.In addition, when the size of the magnetic core is large, the magnetic core butt joint surface is also prone to misalignment due to lack of positioning of the magnetic core, which affects the assembly and reliability of the magnetic core. SUMMARY

[0003] Therefore, the utility model aims at providing a magnetic core bonding type high-power inductor to solve the problem of lack of positioning structure for large-size magnetic core in existing inductors, which leads to misalignment of the magnetic core butt joint surface and affects the assembly and reliability of the magnetic core.

[0004] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0005] A magnetic core bonding type high-power inductor, comprising a base, a magnetic core provided on the base, and a coil provided on the magnetic core; the base is provided with a support assembly for supporting the magnetic core at a position corresponding to the magnetic core, and is provided with a limiting assembly for limiting the magnetic core and a positioning assembly for positioning the coil at positions corresponding to the periphery of the magnetic core; the magnetic core comprises a plurality of magnetic blocks, and each magnetic block is connected by adhesive bonding.

[0006] Further, the base is provided with a grid-shaped reinforcing member below, and an annular rim protruding from the upper surface of the base above.

[0007] Further, the magnetic core is a rectangular ring structure.

[0008] Further, two middle columns for winding the coil are provided on the left and right sides of the magnetic core respectively, and the positioning assembly is provided with two corresponding middle columns.

[0009] Further, the positioning assembly comprises a positioning member provided on the base, and the positioning member is provided with at least two positioning members spaced apart along the length direction of the middle column, and each positioning member is provided with a fitting part matched with the coil on one side facing the magnetic core.

[0010] Further, the fitting part and the coil are connected by adhesive.

[0011] Further, the support assembly comprises supports arranged on the base, and the supports are arranged at least in two, and each support is connected with the base through a connecting piece, and the length direction of the connecting piece is perpendicular to the length direction of the support.

[0012] Further, the support assembly comprises supports arranged on the base, and the supports are arranged at least in two, and each support is connected with the base through a connecting piece, and the length direction of the connecting piece is perpendicular to the length direction of the support.

[0013] Further, the base is provided with a plurality of heat dissipation holes corresponding to the positions between the adjacent two supports.

[0014] Further, the support assembly comprises supports arranged on the base, and the supports are arranged at least in two, and each support is connected with the base through a connecting piece, and the length direction of the connecting piece is perpendicular to the length direction of the support.

[0015] Compared with the prior art, the magnetic core bonding type high-power inductor has the following advantages:

[0016] The magnetic core bonding type high-power inductor has the advantages of easy structure stability and reliability, and easy assembly. The magnetic core formed by bonding a plurality of magnetic blocks is convenient for processing, does not need to open a complex mold, saves the cost of the magnetic core manufacturer, facilitates the assembly of the inductor manufacturer, and simultaneously plays a role of uniform air gap. The base bears the magnetic core, and the support assembly and the limiting assembly are arranged on the base, so that the stability of the magnetic core on the base is improved, and the dislocation of the magnetic core is avoided. In addition, the positioning assembly for positioning the coil is arranged on the base, which is also conducive to improving the stability of the coil, avoiding movement or falling off of the coil, and the heat dissipation holes arranged on the base are convenient for heat dissipation of the coil and the magnetic core, and are conducive to improving the reliability of the inductor as a whole. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings, which form a part of the present application, are used to provide a further understanding of the present application, and the illustrative embodiments of the present application and their description serve the purpose of explaining the present application. In the drawings:

[0018] Fig. 1 The structure schematic view of the magnetic core bonding type high-power inductor is shown in the embodiment of the present application;

[0019] Fig. 2 The structure schematic view of the magnetic core bonding type high-power inductor is shown in the embodiment of the present application;

[0020] Fig. 3 The structure schematic view of the magnetic core bonding type high-power inductor is shown in the embodiment of the present application;

[0021] Fig. 4 A structure schematic view of the reinforcing part on the base of the magnetic core bonding type high-power inductor.

[0022] Explanation of reference signs:

[0023] 1, base; 2, magnetic core; 3, coil; 4, middle column; 5, magnetic block; 6, reinforcing part; 7, heat dissipation hole; 8, annular edge; 9, supporting part; 10, ventilation groove; 11, limiting part; 12, limiting groove; 13, positioning part; 14, fitting part; 15, connecting part. DETAILED DESCRIPTION

[0024] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0025] In the description of the present application, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0026] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0028] A magnetic core bonding type high-power inductor, such as Figs. 1 to 4As shown, it comprises a base 1, a magnetic core 2 arranged on the base 1, and a coil 3 arranged on the magnetic core 2; the base 1 is provided with a support assembly for supporting the magnetic core 2 at a position corresponding to the magnetic core 2, and is provided with a limiting assembly for limiting the magnetic core 2 at positions corresponding to the periphery of the magnetic core 2, and a positioning assembly for positioning the coil 3; the magnetic core 2 comprises a plurality of magnetic blocks 5, and each magnetic block 5 is connected by adhesive bonding. For example, the adhesive can be an existing epoxy adhesive or epoxy resin glue, and other suitable adhesives can also be selected by those skilled in the art according to actual needs, which will not be described here.

[0029] In actual application, the base 1 is used to carry the magnetic core 2, which is conducive to improving the stability of the magnetic core 2, and the support assembly and the limiting assembly on the base 1 are used in cooperation, which can avoid the dislocation of the magnetic core 2. At the same time, the positioning assembly on the base 1 is used to position the coil 3, which is conducive to improving the structural stability of the inductor as a whole and ensuring the reliability of the inductor in use.

[0030] Preferably, the base 1 is provided with a grid-shaped reinforcing member 6 below, and is provided with an annular rim 8 protruding from the upper surface of the base 1. For example, the reinforcing member 6 and the annular rim 8 are both fixed on the base 1, the grid-shaped reinforcing member 6 is conducive to improving the structural strength of the base 1, and the annular rim 8 not only improves the structural strength of the base 1, but also improves the stability of the above-mentioned assemblies on the base 1 by connecting with the support assembly, the limiting assembly and the positioning assembly on the base 1, so as to ensure that the above-mentioned assemblies can always stably position the magnetic core 2 or the coil 3.

[0031] Preferably, the magnetic core 2 is a rectangular ring structure. For example, the magnetic core 2 is a rectangular ring structure, in actual application, the required magnetic core 2 can be divided into small blocks, the ends are divided into eight magnetic blocks 5, the middle column 4 is divided into four magnetic blocks 5, the magnetic blocks 5 are bonded together, and the two U-shaped half-magnets are assembled after bonding, which is convenient for subsequent assembly of the inductor.

[0032] In actual application, the magnetic core 2 is formed by bonding a plurality of magnetic blocks 5, which has the following advantages: first, small magnetic blocks 5 are convenient for manufacturers of magnetic cores 2 to process, without the need to open complex molds, saving mold costs, and the U-shaped half-magnets are assembled after bonding, which is convenient for assembly of the inductor; second, the magnetic core 2 can be divided according to the size and air gap, and the magnetic blocks 5 and the magnetic blocks 5 are equivalent to small air gaps, which plays a role in uniform air gap, and is conducive to improving the reliability of the magnetic core 2.

[0033] Preferably, the left and right sides of the magnetic core 2 are provided with two middle columns 4 for winding the coil 3, and the positioning assembly is provided with two middle columns 4 correspondingly. For example, the positioning assembly comprises a positioning piece 13 provided on the base 1, and the positioning piece 13 is provided at least two intervals along the length direction of the middle column 4, and each of the positioning piece 13 is provided with a fitting part 14 matched with the coil 3 towards one side of the magnetic core 2. The fitting part 14 can be provided with an arc surface matched with the coil 3 to ensure that the positioning piece 13 can position the coil 3.

[0034] In actual application, the positioning piece 13 can be provided with two, three or more intervals, which can be set by those skilled in the art according to actual needs, and will not be described here. The positioning piece 13 is fixed on the base 1 and connected with the annular edge 8 of the base 1 to ensure the structural strength of the positioning piece 13. At the same time, the positioning piece 13 can also improve the structural strength of the connection between the base 1 and the annular edge 8.

[0035] Preferably, the fitting part 14 and the coil 3 are connected by adhesive. In actual use, the fitting part 14 and the coil 3 are fixed by adhesive, which is conducive to further improving the positioning effect of the positioning piece 13 on the coil 3 and preventing the coil 3 from moving or loosening during use. In addition, by connecting the fitting part 14 on the multiple positioning pieces 13 with the coil 3, multi-point positioning of the coil 3 can be achieved, which is conducive to further improving the stability of the coil 3 and thus improving the reliability of the inductor.

[0036] Preferably, the supporting assembly comprises a supporting piece 9 provided on the base 1, and the supporting piece 9 is provided at least two intervals, and each of the supporting piece 9 is connected with the base 1 through a connecting piece 15, and the length direction of the connecting piece 15 is perpendicular to the length direction of the supporting piece 9. For example, the supporting piece 9 can be provided with two corresponding to the positions of the two ends of the coil 3, so as to avoid interference between the supporting piece 9 and the coil 3, and those skilled in the art can also set multiple according to actual needs to achieve multi-point support of the magnetic core 2, which will not be described here.

[0037] In actual application, the supporting piece 9 and the connecting piece 15 are fixed on the base 1, and the supporting piece 9 and the connecting piece 15 form a T-shaped structure to improve the structural strength of the supporting piece 9 and the base 1, and to ensure that the supporting piece 9 can stably support the magnetic core 2. By providing the supporting piece 9 on the base 1, the height of the supporting piece 9 can be higher than the thickness of the coil 3, so as to ensure that the coil 3 is not damaged, and at the same time, the supporting piece 9 plays the role of reinforcing rib under the magnetic core 2 to ensure that the base 1 can better support and position the magnetic core 2.

[0038] Preferably, the support 9 is provided with a ventilation groove 10, the ventilation groove 10 is provided in one-to-one correspondence with the center column 4, and the base 1 is provided with a plurality of heat dissipation holes 7 in communication with the ventilation groove 10. Exemplarily, the base 1 is provided with a heat dissipation hole 7 at a position corresponding to the position between adjacent two supports 9. By providing the ventilation groove 10 on the support 9 and the heat dissipation hole 7 in communication with the ventilation groove 10 on the base 1, the coil 3 and the magnetic core 2 are facilitated to dissipate heat, and the reliability of the inductor in use is also improved.

[0039] In actual application, the heat dissipation hole 7 can be matched in various shapes, such as rectangular, trilobal, circular and the like, so that more heat dissipation holes 7 can be provided on the base 1 under the premise of ensuring the structural strength of the base 1, and the heat dissipation effect on the magnetic core 2 and the coil 3 is improved.

[0040] Preferably, the limiting assembly comprises a limiting piece 11 provided on the base 1, and the limiting piece 11 is evenly provided with at least four limiting grooves 12 capable of cooperating with the magnetic core 2 on one side of the middle part of the base 1. Exemplarily, the limiting piece 11 is provided with four limiting grooves 12 corresponding to the four corners of the magnetic core 2, and each limiting piece 11 is fixed on the annular edge 8 of the base 1. By providing four limiting pieces 11, the limiting of the magnetic core 2 is realized, and the stable installation of the magnetic core 2 on the base 1 is ensured.

[0041] The magnetic core bonding type high-power inductor has the advantages of stable and reliable structure, easy assembly, and the like. The magnetic core formed by bonding a plurality of magnetic blocks is convenient to process, does not need to open a complex mold, saves the cost of the magnetic core manufacturer, facilitates the assembly of the inductor manufacturer, and plays a role of uniform air gap. By using the base to bear the magnetic core, and providing the support assembly and the limiting assembly on the base, the stability of the magnetic core on the base is improved, and the dislocation of the magnetic core is avoided. In addition, by providing the positioning assembly for positioning the coil on the base, the stability of the coil is also improved, the movement or scattering of the coil is avoided, the heat dissipation holes provided on the base are convenient for the coil and the magnetic core to dissipate heat, and the reliability of the inductor as a whole is improved.

[0042] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A magnetic core-bonded power inductor, characterized by: The utility model provides a magnetic core and coil structure, including base (1), the magnetic core (2) of setting on base (1) and the coil (3) of setting on magnetic core (2), base (1) is equipped with the support component for supporting magnetic core (2) on the position corresponding magnetic core (2), and the limiting component for limiting magnetic core (2) and the positioning component for positioning coil (3) are equipped with on the position corresponding the periphery of magnetic core (2) of base (1), magnetic core (2) includes several magnetic blocks (5), and each magnetic block (5) is connected by adhesive bonding.

2. A magnetic core-bonded high-power inductor according to claim 1, characterized in that: The base (1) is provided below with a grid-shaped reinforcing member (6), and the base (1) is provided above with an annular rim (8) protruding from the upper surface of the base (1).

3. A magnetic core-bonded high power inductor according to claim 2, characterized in that: The magnetic core (2) is a rectangular ring structure.

4. A magnetic core-bonded high-power inductor according to claim 1 or 3, characterized in that: Two middle columns (4) for winding the coil (3) are provided on the left and right sides of the magnetic core (2) correspondingly, and the positioning component is provided with two corresponding middle columns (4).

5. A magnetic core-bonded power inductor as claimed in claim 4, characterized in that: The positioning component includes a positioning member (13) provided on the base (1), and the positioning member (13) is provided at least two intervals along the length direction of the middle column (4), and each positioning member (13) is provided with a fitting part (14) matched with the coil (3) on the side facing the magnetic core (2).

6. A magnetic core-bonded power inductor as claimed in claim 5, characterized in that: The fitting part (14) and the coil (3) are connected by adhesive.

7. A magnetic core-bonded high power inductor according to claim 4, wherein: The support component includes a support member (9) provided on the base (1), and the support member (9) is provided at least two intervals, and each support member (9) is connected with the base (1) through a connecting member (15), and the length direction of the connecting member (15) is perpendicular to the length direction of the support member (9).

8. A magnetic core-bonded high power inductor according to claim 7, characterized in that: The support member (9) is provided with a ventilation groove (10), and the ventilation groove (10) is provided one-to-one corresponding to the middle column (4), and the base (1) is provided with a plurality of heat dissipation holes (7) communicated with the ventilation groove (10).

9. A magnetic core-bonded power inductor according to claim 8, wherein: The base (1) is provided with a heat dissipation hole (7) corresponding to the position between adjacent two support members (9).

10. A magnetic core-bonded high-power inductor according to claim 1 or 3, characterized in that: The limiting component includes a limiting member (11) provided on the base (1), and the limiting member (11) is provided at least four intervals, and each limiting member (11) is provided with a limiting groove (12) matched with the magnetic core (2) on the side facing the middle part of the base (1).

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