Inductor

Abstract

The utility model belongs to the technical field of magnetic components, and particularly relates to an inductor which comprises a magnetic core, two groups of winding coils and an insulating plate, a first middle column and a second middle column are arranged on the magnetic core, the two groups of winding coils are wound on the first middle column and the second middle column, and the insulating plate covers the top of the magnetic core. A heat dissipation assembly is arranged between the insulating plate and the magnetic core and comprises a heat dissipation piece and a heat conduction piece, the heat dissipation piece is arranged on the insulating plate, one end of the heat conduction piece is connected with the heat dissipation piece, and the other end of the heat conduction piece penetrates through the insulating plate and extends to the position between the first middle column and the second middle column. Heat generated by the two winding coils is gathered between the first middle column and the second middle column and is conducted to the cooling fins and then is dissipated through the cooling fins, and the heat dissipation effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to magnetic component technology field, concretely relates to an inductor. BACKGROUND

[0002] The statements in this section merely provide background information related to the utility model and do not necessarily constitute prior art.

[0003] The inductor is a component that can store and release energy, and the coil generates a reverse magnetic field after being energized, thereby inhibiting the passage of current in the coil and achieving functions such as filtering.

[0004] The current flat wire wound inductor can be combined into a double-phase interleaved coupled inductor by two or more inductors through bidirectional coupling, so that the inductors interact under the action of the electromagnetic field and change the working characteristics of the inductor itself.

[0005] However, the inventor found that the coil generates a large amount of heat under the action of electricity during use, which is difficult to dissipate in the magnetic core, making the inductor prone to damage. UTILITY MODEL CONTENTS

[0006] To solve the above problems, the utility model provides an inductor.

[0007] According to some embodiments, the utility model provides an inductor, which adopts the following technical scheme:

[0008] An inductor includes a magnetic core, two groups of winding coils, and an insulating plate. The magnetic core is provided with a first middle column and a second middle column. The two groups of winding coils are wound on the first middle column and the second middle column. The insulating plate is provided on the top of the magnetic core. A heat dissipation assembly is arranged between the insulating plate and the magnetic core. The heat dissipation assembly includes a heat sink and a heat conducting piece. The heat sink is arranged on the insulating plate. One end of the heat conducting piece is connected to the heat sink. The other end of the heat conducting piece extends between the first middle column and the second middle column.

[0009] Further, the insulating plate is provided with a heat dissipation groove for accommodating the heat sink. The heat sink and the heat dissipation groove are inserted and matched.

[0010] Further, the heat dissipation groove hole bottom is provided with a perforation, and the perforation is provided for the heat conducting piece to pass through.

[0011] Further, the perforation is arranged along the width direction of the heat dissipation groove from one end surface of the insulating plate.

[0012] Further, the heat dissipation groove hole bottom is provided with a glue dispensing position, and the glue dispensing position is located on both sides of the perforation. The two sides of the heat sink are in abutting cooperation with the glue dispensing position.

[0013] Further, the positioning block is connected between the heat dissipation fin and the heat conducting piece, the magnetic core is provided with a positioning groove corresponding to the positioning block, and the positioning block is inserted and matched with the positioning groove.

[0014] Further, the surface of the heat dissipation fin away from the heat conducting piece is provided with a heat dissipation fin.

[0015] Further, the heat conducting piece is provided with a heat conducting plate on one side surface close to the winding coil, and the heat conducting plate extends to between the two groups of winding coils.

[0016] Further, the heat conducting piece is a heat conducting pipe, the heat conducting pipe is hollow, the heat dissipation fin is provided with a first heat dissipation hole, and the heat conducting pipe is aligned and communicated with the first heat dissipation hole.

[0017] Further, the side wall of the heat conducting pipe is circumferentially provided with a plurality of second heat dissipation holes.

[0018] Compared with the prior art, the beneficial effects of the present application are:

[0019] The heat dissipation assembly is arranged between the magnetic core and the insulating plate, the heat dissipation assembly comprises a heat conducting piece and a heat dissipation fin, the heat conducting piece extends into between the first middle column and the second middle column of the magnetic core, so that the heat of the two winding coils is conducted to the heat dissipation fin for rapid heat dissipation, and the heat dissipation problem of the dual-phase winding inductance is effectively solved. BRIEF DESCRIPTION OF DRAWINGS

[0020] The drawings constituting a part of the present application are used to provide further understanding of the present application, and the illustrative embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitation on the present application.

[0021] Figure 1 It is an assembly schematic view of the embodiment one of the present application;

[0022] Figure 2 It is a sectional view of the embodiment one of the present application;

[0023] Figure 3 It is a structure schematic view of the insulating plate of the present application;

[0024] Figure 4 It is another structure schematic view of the insulating plate of the present application;

[0025] Figure 5 It is an assembly schematic view of the embodiment two of the present application.

[0026] Wherein, 1, magnetic core; 2, first middle column; 3, second middle column; 4, winding coil; 5, air gap; 6, recess; 7, insulating plate; 8, heat dissipation assembly; 81, heat dissipation fin; 82, heat conduction piece; 9, heat conduction plate; 10, heat dissipation groove; 11, perforation; 12, positioning block; 13, positioning groove; 14, glue dispensing position; 15, first heat dissipation hole; 16, second heat dissipation hole; 17, heat dissipation fin. DETAILED DESCRIPTION

[0027] The utility model will be further described below in combination with the drawings and examples.

[0028] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the utility model. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as generally understood by those skilled in the art to which the utility model belongs.

[0029] It should be noted that the terms used herein are only for the purpose of describing the specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, they indicate the presence of a feature, step, operation, device, component and / or their combination.

[0030] In the utility model, the orientation or position relationship indicated by the terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom" and the like is the orientation or position relationship shown in the drawings, which is only a relationship word determined for the purpose of conveniently describing the structural relationship of the components or elements of the utility model, and is not a specific component or element in the utility model, and cannot be understood as a limitation on the utility model.

[0031] In the utility model, the terms such as "fixedly connected", "connected", "connected" and the like should be understood broadly, which means that it can be fixedly connected, integrally connected or detachably connected, and it can be directly connected or indirectly connected through an intermediate medium. For related scientific researchers or technicians in the art, the specific meaning of the above terms in the utility model can be determined according to the specific circumstances, and it cannot be understood as a limitation on the utility model. Example one

[0032] Reference Figure 1An inductor comprises a magnetic core 1, two groups of winding coils 4 and an insulating plate 7. The magnetic core 1 is provided with a first middle column 2 and a second middle column 3, the two groups of winding coils 4 are wound on the first middle column 2 and the second middle column 3 of the magnetic core 1 respectively, and the insulating plate 7 is arranged on the top of the magnetic core 1. In the embodiment, the bottom of the magnetic core 1 is provided with four recesses 6 for fixing the terminal pins of the winding coils 4 by spot welding. In addition, the magnetic core 1 is provided with an air gap 5 on the side surface away from the first middle column 2 and the second middle column 3.

[0033] Referring to Figure 2 and Figure 3 , a heat dissipation assembly 8 is arranged between the insulating plate 7 and the magnetic core 1, and in the embodiment, the heat dissipation assembly 8 comprises two groups, which are arranged at the two ends of the insulating plate 7. The heat dissipation assembly 8 comprises a heat dissipation fin 81 and a heat conduction piece 82, the heat dissipation fin 81 is arranged on the insulating plate 7, the heat dissipation fin 81 and the heat conduction piece 82 can be made of ceramic or non-magnetic metal material, and the heat conduction piece 82 is connected to the bottom of the heat dissipation fin 81 and extends into the magnetic core 1. In addition, the surface of the heat dissipation fin 81 away from the heat conduction piece 82 is provided with a plurality of heat dissipation fins 17 to increase the heat dissipation area.

[0034] Specifically, the two ends of the insulating plate 7 are provided with heat dissipation grooves 10, which are arranged along the length direction of the insulating plate 7 from the two end faces of the insulating plate 7. The heat dissipation fin 81 is arranged in the heat dissipation groove 10, and the heat dissipation fin 81 is inserted and matched with the heat dissipation groove 10. The bottom of the heat dissipation groove 10 is provided with a through hole 11 for the heat conduction piece 82 to pass through, and the through hole 11 is arranged along the width direction of the heat dissipation groove 10 from the end face of the insulating plate 7. In addition, in order to facilitate the fixation of the heat dissipation fin 81 in the heat dissipation groove 10, the bottom of the heat dissipation groove 10 is provided with a dispensing position 14 for dispensing the heat dissipation fin 81, which is arranged along the length direction of the bottom of the heat dissipation groove 10 from the end face of the insulating plate 7, and the dispensing position 14 is located on both sides of the through hole 11, and the two side ends of the heat dissipation fin 81 are in abutting fit with the dispensing position 14, so as to install the heat dissipation fin 81 in the heat dissipation groove.

[0035] In order to facilitate the quick positioning of the insulating plate 7 on the magnetic core 1, a positioning block 12 is arranged between the insulating plate 7 and the heat conduction piece 82, specifically, the top of the positioning block 12 is fixedly connected with the heat dissipation fin 81, and the connection mode can be welding, the end of the positioning block 12 away from the magnetic core 1 is connected with the heat conduction piece 82, and the end of the magnetic core 1 close to the insulating plate 7 is provided with a positioning groove 13 corresponding to the positioning block 12, and the positioning block 12 is inserted and matched with the positioning groove 13. Further, the positioning block 12 is a T-shaped block, and the corresponding positioning groove 13 is a T-shaped groove.

[0036] It should be noted that in the embodiment, the heat conducting member 82 is a heat conducting column, one end of the heat conducting column is connected to the bottom of the heat sink 81 vertically, and the other end of the heat conducting column extends into the first middle column 2 and the second middle column 3. The heat conducting plate 9 is connected between the two heat conducting columns, the heat conducting plate 9 is located between the two winding coils 4, and the connection mode between the heat conducting plate 9 and the heat conducting column can be bonding or welding. As shown in Figure 3 , one end of the heat conducting plate 9 away from the insulating plate 9 abuts against the side 7 of the winding coil 4 facing the insulating plate. Figure 4 , the heat conducting plate 9 is arranged along the height direction of the heat conducting column and extends between the two groups of winding coils 4, so as to further conduct the heat accumulated between the two groups of winding coils 4 to the heat conducting column for dissipation. Embodiment two

[0037] Referring to Figure 5 , different from embodiment 1, the heat conducting member 82 is a heat conducting pipe, the heat conducting pipe is hollow, at this time, the heat sink 81 is provided with a first heat dissipation hole 15, one end of the heat conducting pipe is inserted into the first heat dissipation hole and communicates with the first heat dissipation hole 15, and a plurality of second heat dissipation holes 16 are circumferentially arranged on the side wall of the heat conducting pipe, the second heat dissipation holes 16 are arranged along the height direction of the heat conducting pipe, so that the heat dissipation channel can be formed in the magnetic core 1, the heat dissipation is accelerated, and the heat dissipation effect is improved.

[0038] The utility model discloses a heat conducting member 82 is arranged in the magnetic core, and the heat sink 81 is arranged on the insulating plate 7, so that the heat accumulated in the two groups of winding coils 4 can be quickly conducted out, and the heat dissipation effect is improved.

[0039] The above only for the preferred embodiment of the utility model has been described, and does not limit the utility model, for the person skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

[0040] The above although the specific implementation of the utility model has been described in combination with the drawings, but is not the limitation of the protection scope of the utility model, the person skilled in the art should understand that various modifications or deformations made by the person skilled in the art on the basis of the technical scheme of the utility model still within the protection scope of the utility model without creative labor.

Claims

1. An inductor comprising a magnetic core (1), two sets of winding coils (4) and an insulating plate (7), the magnetic core (1) is provided with a first limb (2) and a second limb (3), the two sets of winding coils (4) are wound on the first limb (2) and the second limb (3), and the insulating plate (7) is arranged on the top of the magnetic core (1), characterized in that, The heat dissipation assembly (8) is arranged between the insulation plate (7) and the magnetic core (1), the heat dissipation assembly (8) comprises a heat dissipation fin (81) and a heat conduction piece (82), the heat dissipation fin (81) is arranged on the insulation plate (7), one end of the heat conduction piece (82) is connected with the heat dissipation fin (81), the other end of the heat conduction piece (82) extends between the first middle column (2) and the second middle column (3), the insulation plate (7) is provided with a heat dissipation groove (10) for accommodating the heat dissipation fin (81), the heat dissipation fin (81) and the heat dissipation groove (10) are inserted and matched, the bottom of the heat dissipation groove (10) is provided with a through hole (11), the through hole (11) is for the heat conduction piece (82) to pass through, the through hole (11) is arranged from one end surface of the insulation plate (7) along the width direction of the heat dissipation groove (10), the bottom of the heat dissipation groove (10) is provided with a glue dispensing position (14), and the glue dispensing position (14) is located on both sides of the through hole (11), the two sides of the heat dissipation fin (81) are in abutting fit with the glue dispensing position (14), the heat dissipation fin (81) and the heat conduction piece (82) are connected with a positioning block (12), the magnetic core (1) is provided with a positioning groove (13) corresponding to the positioning block (12), the positioning block (12) and the positioning groove (13) are inserted and matched, one surface of the heat dissipation fin (81) away from the heat conduction piece (82) is provided with a heat dissipation fin (17), one side surface of the heat conduction piece (82) close to the winding coil (4) is provided with a heat conduction plate (9), the heat conduction plate (9) extends between the two groups of winding coils (4), the heat conduction piece (82) is a heat conduction pipe, the heat conduction pipe is arranged in a hollow manner, the heat dissipation fin (81) is provided with a first heat dissipation hole (15), the heat conduction pipe is aligned with and communicates with the first heat dissipation hole (15), and a plurality of second heat dissipation holes (16) are circumferentially arranged on the side wall of the heat conduction pipe.

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