Inductor capable of rapidly dissipating heat

Abstract

The utility model discloses a fast heat dissipation inductor which comprises a magnet, a coil, two electrode plates and a heat dissipation device. The magnet is formed by pressing magnetic powder, the coil is embedded in the magnet, one ends of the two electrode plates are connected with the two ends of the coil respectively, and the other ends of the two electrode plates extend out of the two side faces of the magnet respectively; the heat dissipation device comprises a heat conduction bottom plate and a plurality of heat dissipation fins, the heat conduction bottom plate is tightly attached to and fixed to the top face of the magnet, and the heat dissipation fins are fixed to the top face of the heat conduction bottom plate. The inductor disclosed by the utility model can quickly dissipate heat, the performance of the inductor is guaranteed, and the service life of the inductor is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of inductors, in particular to an inductor with rapid heat dissipation. Background Art

[0002] Inductors are one of the important electronic components in the field of electronic circuits. To facilitate the welding of inductors, the current mainstream inductors are chip inductors. In some special usage scenarios, the inductor has a large inductance value, which leads to a large amount of heat generated by the inductor. If it is in a relatively high temperature working state for a long time, it will affect the performance of the inductor and reduce its service life. Utility Model Content

[0003] The utility model provides an inductor with rapid heat dissipation, which can quickly dissipate heat, ensure the performance of the inductor, and extend its service life.

[0004] In order to solve the above problems, the utility model adopts the following technical solutions:

[0005] The embodiment of the utility model provides an inductor with rapid heat dissipation, comprising a magnet, a coil, two electrode sheets and a heat dissipation device; the magnet is formed by pressing magnetic powder, the coil is buried in the magnet, one end of the two electrode sheets is respectively connected to the two ends of the coil, and the other ends of the two electrode sheets extend from the two side surfaces of the magnet respectively; the heat dissipation device comprises a heat-conducting bottom plate and a plurality of heat dissipation sheets, the heat-conducting bottom plate is tightly fixed on the top surface of the magnet, and the heat dissipation sheets are fixed on the top surface of the heat-conducting bottom plate.

[0006] In some embodiments, all the heat sinks are arranged in parallel, and all the heat sinks are evenly distributed in the same direction, and the intervals between two adjacent heat sinks are equal.

[0007] In some embodiments, the heat sink and the heat conductive base plate are vertically arranged, and the heat sink and the heat conductive base plate are integrally connected.

[0008] In some embodiments, the electrode sheet includes a connecting portion, a lead portion and a welding portion connected in sequence, the connecting portion is buried in the magnet and connected to the end of the coil, the lead portion is located on the side of the magnet, and the welding portion is located on the bottom of the magnet.

[0009] In some embodiments, a slot is provided on a side of the magnet, and the lead-out portion is located in the slot.

[0010] In some embodiments, the width of the slot gradually increases in a downward extending direction.

[0011] In some embodiments, a bottom surface of the magnet is provided with a bottom groove connected to the slot, and the welding portion is located in the bottom groove.

[0012] The utility model has at least the following beneficial effects: the utility model is provided with a heat dissipation device on the top surface of the magnet, the heat dissipation device includes a heat-conducting bottom plate and a plurality of heat sinks, the heat-conducting bottom plate is tightly fixed on the top surface of the magnet, the heat sink is fixed on the top surface of the heat-conducting bottom plate, when the inductor is working and generates heat, the heat-conducting bottom plate can transfer heat to the heat sink, the heat sink can increase the heat dissipation area to quickly dissipate heat, thereby reducing the working temperature of the inductor, ensuring the performance of the inductor, and extending the service life of the inductor. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of an inductor for rapid heat dissipation according to an embodiment of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of a magnet and an electrode sheet in one embodiment of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of a coil and an electrode sheet in one embodiment of the utility model;

[0016] Figure 4 This is a schematic structural diagram of a magnet and an electrode sheet according to an embodiment of the utility model as viewed from the bottom.

[0017] Wherein, the accompanying drawings are marked as follows:

[0018] Magnet 100, slot 120, bottom slot 130;

[0019] Coil 200;

[0020] Electrode sheet 300, connecting portion 310, lead-out portion 320, welding portion 330;

[0021] Thermally conductive base plate 410 and heat sink 420 . DETAILED DESCRIPTION

[0022] The utility model provides the following description with reference to the accompanying drawings to help fully understand the various embodiments of the utility model as defined by the claims and their equivalents. The description includes various specific details to help understanding, but these details should be regarded as exemplary only. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of the utility model.

[0023] In the description of the present invention, descriptions of orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the drawings and are only for the convenience of describing the present invention and simplifying the description. They 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 therefore should not be understood as a limitation on the present invention.

[0024] It will be understood that when one element (eg, a first element) is “connected” to another element (eg, a second element), the element may be directly connected to the other element or an intervening element (eg, a third element) may be present between the element and the other element.

[0025] The embodiment of the utility model provides an inductor with rapid heat dissipation, such as Figure 1-4 As shown, it includes a magnet 100, a coil 200, two electrode sheets 300 and a heat dissipation device. The magnet 100 is similar to a rectangular parallelepiped and is formed by pressing magnetic powder. Specifically, the magnetic powder can be poured into a mold and made into the magnet 100 after hot pressing. The coil 200 is buried in the magnet 100. Before pressing the magnetic powder, the coil 200 is also placed in the mold and buried in the magnetic powder to be pressed and formed as a whole with the magnet 100. One end of the two electrode sheets 300 is respectively connected to the two ends of the coil 200, and the other ends of the two electrode sheets 300 extend from the two sides of the magnet 100. For the convenience of distinguishing and explaining, the two electrode sheets 300 can be defined as a first electrode sheet and a second electrode sheet, respectively. One end of the first electrode sheet is connected to one end of the coil 200, and the other end of the first electrode sheet extends from one side of the magnet 100. One end of the second electrode sheet is connected to the other end of the coil 200, and the other end of the second electrode sheet extends from the other side opposite to the magnet 100. The electrode sheet 300 extending out of the magnet 100 is used to connect the circuit so that the coil 200 is powered on and works. The heat dissipation device includes a heat-conducting base plate 410 and a plurality of heat sinks 420. The heat-conducting base plate 410 and the heat sinks 420 are both made of heat-conducting materials. The heat-conducting base plate 410 is closely fixed to the top surface of the magnet 100, and can be specifically fixed to the top surface of the magnet 100 by gluing, and the heat sinks 420 are fixed to the top surface of the heat-conducting base plate 410. When the inductor is working and generates heat, the heat-conducting base plate 410 can transfer heat to the heat sink 420, and the heat sink 420 can then dissipate heat, which can increase the heat dissipation area to quickly dissipate heat, thereby reducing the working temperature of the inductor, ensuring the performance of the inductor, and extending the service life of the inductor.

[0026] In some embodiments, all heat sinks 420 are arranged in parallel, and all heat sinks 420 are evenly distributed in the same direction, and the spacing between two adjacent heat sinks 420 is equal. Compared with a messy distribution, this layout of heat sinks 420 can increase the number of heat sinks 420 to improve the heat dissipation effect, and at the same time, it is also easy to manufacture.

[0027] Furthermore, the heat sink 420 is vertically arranged with the heat conductive bottom plate 410. Compared with the inclined arrangement, the heat sink 420 does not extend around the magnet 100, so as not to interfere with the adjacent electronic components on the circuit board. The heat sink 420 is integrally connected with the heat conductive bottom plate 410, which can not only enhance the structural strength of the connection, but also facilitate the overall manufacturing and molding.

[0028] In some embodiments, the electrode sheet 300 includes a connecting portion 310, a leading portion 320, and a welding portion 330 that are sequentially connected. The connecting portion 310 is embedded in the magnet 100 and connected to the end of the coil 200. The leading portion 320 is located on the side surface of the magnet 100, and the welding portion 330 is located on the bottom surface of the magnet 100. The welding portion 330 is used for welding to fix the entire inductor to the circuit board. Among them, the connecting portion 310 and the leading portion 320 can be vertically connected, and the leading portion 320 and the welding portion 330 can also be vertically connected. The cross-sectional shape of the entire electrode sheet 300 forms a shape similar to a "U". The connecting portion 310, the leading portion 320, and the welding portion 330 can be formed by bending a single electrode plate, which is convenient for overall manufacturing and shaping.

[0029] Further, a slot 120 is provided on the side surface of the magnet 100, and the leading portion 320 is located in the slot 120, which makes the leading portion 320 not protrude from the side surface of the magnet 100, and the side surface of the magnet 100 is relatively flatter and not likely to interfere with adjacent components on the circuit board.

[0030] Furthermore, in the downward extending direction, the width of the slot 120 gradually increases to easily bend the leading portion 320 into the slot 120, reduce the difficulty of alignment, and facilitate the bending operation.

[0031] In some embodiments, a bottom slot 130 communicating with the slot 120 is provided on the bottom surface of the magnet 100, and the welding portion 330 is located in the bottom slot 130. After the leading portion 320 is bent, the welding portion 330 is directly located in the bottom slot 130. The bottom slot 130 can accommodate solder, which is convenient for soldering to fix the inductor.

[0032] The terms and words used in the above description and claims are not limited to their literal meanings, but are used by the applicant to enable a clear and consistent understanding of the present utility model. Therefore, those skilled in the art should clearly understand that the above descriptions of various embodiments of the present utility model are for the purpose of illustration only, rather than for limiting the present utility model as defined by the appended claims and their equivalents.

Claims

1. An inductor with rapid heat dissipation, characterized in that: It includes a magnet, a coil, two electrode sheets and a heat sink; the magnet is pressed by magnetic powder, the coil is buried in the magnet, one end of the two electrode sheets is connected to the two ends of the coil respectively, and the other ends of the two electrode sheets extend from the two sides of the magnet respectively; The heat dissipation device comprises a heat-conducting bottom plate and a plurality of heat sinks. The heat-conducting bottom plate is tightly fixed on the top surface of the magnet, and the heat sinks are fixed on the top surface of the heat-conducting bottom plate.

2. The fast heat dissipation inductor according to claim 1, characterized in that: All the heat sinks are arranged in parallel, and all the heat sinks are evenly distributed in the same direction, and the intervals between two adjacent heat sinks are equal.

3. The fast heat dissipation inductor according to claim 2, characterized in that: The heat sink and the heat conducting bottom plate are vertically arranged, and the heat sink and the heat conducting bottom plate are integrally connected.

4. The fast heat dissipation inductor according to any one of claims 1 to 3, characterized in that: The electrode sheet includes a connecting portion, a lead-out portion and a welding portion which are connected in sequence, the connecting portion is buried in the magnet and connected to the end of the coil, the lead-out portion is located on the side of the magnet, and the welding portion is located on the bottom of the magnet.

5. The fast heat dissipation inductor according to claim 4, characterized in that: A slot is provided on the side of the magnet, and the lead-out portion is located in the slot.

6. The fast heat dissipation inductor according to claim 5, characterized in that: In the downward extending direction, the width of the slot gradually increases.

7. The fast heat dissipation inductor according to claim 5, characterized in that: The bottom surface of the magnet is provided with a bottom groove connected with the slot, and the welding part is located in the bottom groove.

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