A flat wire wound embedded compact common mode inductor structure

Abstract

The utility model provides a kind of flat wire winding's embedded compact common mode inductance structure, it is related to common mode inductance field.The utility model includes heat dissipation component, detachably installed heat conduction component below heat dissipation component;And be set below heat conduction component inductance bottom plate;The heat dissipation component includes: heat dissipation plate;And fixed in the heat dissipation fin of heat dissipation plate top;The heat conduction component includes: set below heat dissipation plate heat conduction column;Magnetic core is provided between heat dissipation plate and inductance bottom plate, the end face of heat dissipation plate and inductance bottom plate towards magnetic core is provided with heat conduction pad, the heat dissipation component still includes fixed hole being opened in the inside of heat dissipation plate, fixed screw is installed in the inside of fixed hole.The utility model is set through heat dissipation component, under the action of heat conduction component, magnetic core heat can be quickly transferred to heat dissipation plate and inductance bottom plate by heat conduction column, can be realized by the heat dissipation fin on heat dissipation plate fast radiating.

Description

Technical Field

[0001] This utility model relates to the field of common mode inductors, specifically a flat wire wound embedded compact common mode inductor structure. Background Technology

[0002] A common-mode inductor is an electronic component used to suppress common-mode interference in circuits. Its core function is to filter out or attenuate co-current noise propagating between signal lines and ground through its inductive characteristics, while allowing differential-mode signals to pass through. A common-mode inductor typically consists of two or more windings wound on the same magnetic core, with the windings in opposite directions. When a common-mode current flows through it, the magnetic fields generated by the two windings are in the same direction, resulting in superimposed magnetic flux and a significant increase in inductance, thereby suppressing the common-mode current.

[0003] Most common-mode inductors currently rely on natural heat dissipation, with the copper wire surface directly exposed to the air and using convection for heat dissipation. However, although the cross-sectional area of ​​the copper wire in a flat-wire common-mode inductor is large, the total surface area is still limited. Compared with heat sinks, the heat dissipation effect is poor, which can easily lead to heat accumulation, forming local hot spots and affecting the inductor's performance and lifespan. Utility Model Content

[0004] The purpose of this invention is to provide a flat wire wound embedded compact common mode inductor structure to solve the problems mentioned in the background art and overcome its technical defects.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a flat wire wound embedded compact common mode inductor structure, including a heat dissipation component, a heat conduction component that can be detachably installed below the heat dissipation component; and an inductor base plate disposed below the heat conduction component;

[0006] The heat dissipation assembly includes: a heat sink; and heat dissipation fins fixed to the top of the heat sink;

[0007] The heat-conducting component includes: a heat-conducting column disposed below the heat sink;

[0008] A magnetic core is disposed between the heat sink and the inductor base plate, and a thermal pad is disposed on the end face of the heat sink and the inductor base plate facing the magnetic core.

[0009] Preferably, the heat dissipation assembly further includes a fixing hole formed inside the heat dissipation plate, and a fixing screw is installed inside the fixing hole.

[0010] Preferably, the heat-conducting component further includes a connecting screw hole formed at the top of the heat-conducting column, the connecting screw hole being threadedly connected to a fixing screw.

[0011] Preferably, the surface of the magnetic core is wound with two sets of flat wire windings, which are in contact with the thermal pad.

[0012] Preferably, the magnetic core is a rectangular ring structure, and a limiting structure is provided on the outer side of the magnetic core. The limiting structure is fixed to the side of the heat sink and the inductor base plate facing the magnetic core.

[0013] Preferably, the two sides of the heat-conducting pillar are in contact with the inner side of the magnetic core, and thermal grease is provided at the connection between the magnetic core and the heat-conducting pillar.

[0014] Preferably, the heat sink, heat-conducting pillar, and inductor base plate form an I-shaped structure.

[0015] Preferably, the heat dissipation fins are evenly distributed at equal intervals along the top of the heat dissipation plate.

[0016] Compared with the prior art, the beneficial effects of this utility model include:

[0017] 1. With the heat dissipation component set up, the heat of the magnetic core can be quickly transferred to the heat dissipation plate and the inductor base plate through the heat conduction column under the action of the heat conduction component, and the heat can be quickly dissipated through the heat dissipation fins on the heat dissipation plate.

[0018] 2. This utility model can limit the magnetic core by setting a limiting structure. The flat wire winding is located on one side of the heat-conducting pad. The heat sink and the heat-conducting column are stably connected by fixing screws to achieve quick assembly. Attached Figure Description

[0019] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0020] Figure 1 The schematic diagram shows an overall structural schematic diagram according to one embodiment of the present invention;

[0021] Figure 2 The schematic diagram shows a structural schematic of a heat sink according to one embodiment of the present invention;

[0022] Figure 3 The schematic diagram shows an inductor base plate according to one embodiment of the present invention;

[0023] Figure 4 The diagram schematically shows a bottom view of a heat sink according to one embodiment of the present invention.

[0024] The following are the labels in the diagram: 1. Heat dissipation component; 101. Heat sink; 102. Heat dissipation fins; 103. Fixing screw; 104. Fixing hole; 2. Inductor base plate; 3. Magnetic core; 4. Flat wire winding; 5. Thermal pad; 6. Limiting structure; 7. Thermal conductive component; 701. Thermal column; 702. Connecting screw hole. Detailed Implementation

[0025] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0026] Please see Figure 1-4 As shown, a flat wire wound embedded compact common mode inductor structure includes a heat dissipation component 1, a heat conduction component 7 detachably installed below the heat dissipation component 1, and an inductor base plate 2 disposed below the heat conduction component 7.

[0027] The heat dissipation assembly 1 includes: a heat sink 101; and heat dissipation fins 102 fixed to the top of the heat sink 101;

[0028] The heat-conducting component 7 includes: a heat-conducting column 701 disposed below the heat sink 101;

[0029] A magnetic core 3 is disposed between the heat sink 101 and the inductor base plate 2, and a thermal pad 5 is disposed on the end face of the heat sink 101 and the inductor base plate 2 facing the magnetic core 3.

[0030] Specifically, the heat dissipation assembly 1 also includes a fixing hole 104 opened inside the heat dissipation plate 101, and a fixing screw 103 is installed inside the fixing hole 104.

[0031] It should be noted that after the fixing screw 103 is inserted into the fixing hole 104 and connected to the connecting screw hole 702, thread-locking agent should be applied to the fixing screw 103 to prevent loosening.

[0032] Specifically, the heat-conducting component 7 also includes a connecting screw hole 702 opened on the top of the heat-conducting pillar 701, and the connecting screw hole 702 is threadedly connected to the fixing screw 103.

[0033] It should be noted that the connecting screw hole 702 and the fixing screw 103 cooperate to facilitate the installation of the heat sink 101 on the top of the heat conduction column 701.

[0034] Specifically, the surface of the magnetic core 3 is wound with two sets of flat wire windings 4, and the flat wire windings 4 are in contact with the thermal pad 5.

[0035] It should be noted that the flat wire winding 4 is a flat wire. The cross-sectional area of ​​the flat wire is larger, and the number of turns can be increased in the same volume, thereby increasing the inductance. The upper surface of the thermal pad 5 can be an arc structure that matches the surface of the flat wire winding 4, so that when the heat sink 101 and the inductor base plate 2 are installed, the flat wire winding 4 can be in close contact with the thermal pad 5 to achieve heat transfer.

[0036] With the heat dissipation component 1 in place, the heat from the magnetic core 3 can be quickly transferred to the heat sink 101 and the inductor base plate 2 through the heat conduction column 701 under the action of the heat conduction component 701, and can be quickly dissipated through the heat dissipation fins 102 on the heat sink 101.

[0037] Specifically, the magnetic core 3 has a rectangular ring structure, and a limiting structure 6 is provided on the outside of the magnetic core 3. The limiting structure 6 is fixed to the heat sink 101 and the inductor base plate 2 on the side facing the magnetic core 3.

[0038] It should be noted that the magnetic core 3 is located inside the limiting structure 6 of the inductor base plate 2. The limiting structure 6 is used to limit the magnetic core 3. An insulating pad or insulating paint needs to be installed at the connection between the limiting structure 6 and the magnetic core 3 to prevent short circuit. After the magnetic core 3 is installed on the inductor base plate 2, the limiting structure 6 on the upper heat sink 101 is also installed on the outside of the magnetic core 3. Similarly, an insulating pad or insulating paint is installed to prevent short circuit.

[0039] Specifically, the two sides of the heat-conducting pillar 701 are in contact with the inner side of the magnetic core 3, and thermal grease is provided at the connection between the magnetic core 3 and the heat-conducting pillar 701.

[0040] It should be noted that thermal grease is used to reduce contact thermal resistance. After the magnetic core 3 is mounted outside the thermally conductive pillar 701, thermal grease is applied to its connection points.

[0041] Specifically, the heat sink 101, the heat conduction column 701, and the inductor base plate 2 form an I-shaped structure.

[0042] It should be noted that the heat sink 101 and the heat conduction column 701 are stably connected by fixing screws 103 to prevent loosening caused by vibration or thermal expansion and contraction.

[0043] It should be noted that the heat dissipation fins 102 are evenly distributed at equal intervals along the top of the heat dissipation plate 101.

[0044] It should be noted that the heat sink 102 can enhance convection heat dissipation. After the heat from the magnetic core 3 is transferred to the heat sink 101 through the heat conduction column 701, the heat sink 102 increases the heat dissipation area. When necessary, a fan can be added to the side of the heat sink 102, and the fan blows air through the heat sink 102 to improve heat dissipation efficiency.

[0045] The magnetic core 3 can be limited by the setting limiting structure 6, the flat wire winding 4 is located on one side of the heat conduction pad 5, and the heat sink 101 and the heat conduction column 701 are stably connected by fixing screws 103 to achieve rapid assembly.

[0046] Working principle: The surfaces of the heat sink 101 and the inductor base plate 2 are coated with insulating varnish. During installation, the magnetic core 3 passes through the heat-conducting pillar 701 and is located inside the limiting structure 6 of the inductor base plate 2. The flat wire winding 4 is located above the heat-conducting pad 5 of the inductor base plate 2. Thermal grease is applied at the connection between the magnetic core 3 and the heat-conducting pillar 701. Then, the heat sink 101 is installed on top of the heat-conducting pillar 701. The heat-conducting pad 5 of the heat sink 101 is located above the flat wire winding 4. After the fixing screw 103 passes through the fixing hole 104, it is connected to the connecting screw hole 702 and is coated with thread locking agent to prevent loosening. When the common mode inductor is working, the heat of the magnetic core 3 can be transferred to the heat sink 101 and the inductor base plate 2 through the heat-conducting pillar 701. The heat is diffused into the air through the heat dissipation fins 102. The heat on the flat wire winding 4 is transferred to the heat sink 101 and the inductor base plate 2 through the heat-conducting pad 5, thus achieving rapid heat dissipation.

[0047] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any indirect modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A flat wire wound embedded compact common mode inductor structure, characterized in that, Includes a heat dissipation component and a heat-conducting component that can be detachably installed below the heat dissipation component; And the inductor base plate located below the heat-conducting components; The heat dissipation assembly includes: a heat sink; and heat dissipation fins fixed to the top of the heat sink; The heat-conducting component includes: a heat-conducting column disposed below the heat sink; A magnetic core is disposed between the heat sink and the inductor base plate, and a thermal pad is disposed on the end face of the heat sink and the inductor base plate facing the magnetic core.

2. The flat wire wound embedded compact common mode inductor structure according to claim 1, characterized in that, The heat dissipation assembly also includes a fixing hole formed inside the heat dissipation plate, and a fixing screw is installed inside the fixing hole.

3. The flat wire wound embedded compact common mode inductor structure according to claim 2, characterized in that, The heat-conducting component also includes a connecting screw hole at the top of the heat-conducting column, which is threadedly connected to a fixing screw.

4. The flat wire wound embedded compact common mode inductor structure according to claim 3, characterized in that, The surface of the magnetic core is wound with two sets of flat wire windings, which are in contact with the thermal pad.

5. The flat wire wound embedded compact common mode inductor structure according to claim 4, characterized in that, The magnetic core has a rectangular ring structure, and a limiting structure is provided on the outside of the magnetic core. The limiting structure is fixed to the side of the heat sink and the inductor base plate facing the magnetic core.

6. The flat wire wound embedded compact common mode inductor structure according to claim 5, characterized in that, The two sides of the heat-conducting pillar are in contact with the inner side of the magnetic core, and thermal grease is provided at the connection between the magnetic core and the heat-conducting pillar.

7. The flat wire wound embedded compact common mode inductor structure according to claim 6, characterized in that, The heat sink, heat-conducting pillars, and inductor base plate form an I-shaped structure.

8. The flat wire wound embedded compact common mode inductor structure according to claim 7, characterized in that, The heat dissipation fins are evenly distributed at equal intervals along the top of the heat dissipation plate.

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