Inductor and inductor heat dissipation assembly
By setting up a fence structure on the heat dissipation surface of the inductor, the problem of the inductor wear of the heat dissipation pad in the vibrating environment is solved, and the heat dissipation effect and durability are improved.
Patent Information
- Application Number
- CN202422697790.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-05
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-11-05
AI Technical Summary
When the inductor is used in a vibrating environment, the heat dissipation pad is prone to wear, resulting in poor heat dissipation effect.
A convex fence structure is provided on the side of the heat dissipation surface of the inductor, and the fence structure extrudes the heat dissipation pad to prevent it from moving.
It improves the contact sufficiency between the heat dissipation pad and the heat dissipation surface, enhances the heat dissipation effect of the inductor, and reduces wear.
Smart Images
Figure CN223296620U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of inductors, in particular to an inductor and an inductor heat dissipation component. Background Art
[0002] An inductor is an electronic component that can store magnetic field energy. It performs functions such as filtering, energy storage, signal processing, and electromagnetic interference suppression in various electronic devices. Inductors generate heat during operation. To dissipate this heat, a combination of a thermal pad and a heat sink is typically used. Specifically, a thermal pad is placed between the inductor and the heat sink, transferring the heat from the inductor to the heat sink, which then dissipates it.
[0003] However, in actual applications, it has been found that due to the vibration environment in which the inductor may operate, the heat dissipation pad is susceptible to physical wear. After long-term use, the surface of the heat dissipation pad may crack or deform, and the heat dissipation effect of the inductor will be reduced. Utility Model Content
[0004] The utility model mainly solves the problem that a heat dissipation pad used in conjunction with an inductor is prone to vibration wear.
[0005] According to the first aspect, an embodiment provides an inductor, comprising a coil, a magnetic core and an insulator, wherein the insulator comprises a main body and a fence structure, the main body fixedly connecting the coil and the magnetic core, the coil having a heat dissipation surface exposed to the main body, the heat dissipation surface being located on the inner side of the fence structure, the fence structure protruding from the main body and being used to squeeze a thermal pad attached to the heat dissipation surface.
[0006] In some embodiments, the fence structure includes a tooth-shaped boss and a strip-shaped boss, and the tooth-shaped boss and the strip-shaped boss enclose the fence structure.
[0007] In some embodiments, the toothed boss includes a plurality of positioning teeth, and the plurality of positioning teeth are arranged at intervals.
[0008] In some embodiments, an anti-slip step is provided on one end of the positioning tooth away from the main body.
[0009] In some embodiments, in a direction perpendicular to the heat dissipation surface, the tooth top surface of the positioning tooth is flush with the top surface of the strip-shaped boss.
[0010] In some embodiments, there are two strip-shaped bosses, which are spaced apart on opposite sides of the heat dissipation surface. There are two tooth-shaped bosses, which are both arranged between the two strip-shaped bosses and enclosed together with the two strip-shaped bosses to form the fence structure.
[0011] In some embodiments, the magnetic core has an exposed surface exposed from the main body, and the exposed surface is located outside the fence structure, and the strip-shaped boss is blocked and disposed between the exposed surface and the heat dissipation surface.
[0012] In some embodiments, the inductor includes a first coil and a second coil, the first coil and the second coil are spaced apart, and the main body is provided with an insulating barrier, and the insulating barrier is located between the first coil and the second coil.
[0013] In some embodiments, the insulating baffle is provided with a mounting hole, the mounting hole is used to install a temperature monitoring element, and the temperature monitoring element is used to monitor the temperature of the first coil and the second coil.
[0014] According to the second aspect, an embodiment provides an inductor heat dissipation assembly, which includes the inductor, heat dissipation pad and heat sink described in any of the above embodiments, and the thermal pad is located between the inductor and the heat sink to conduct the heat of the inductor to the heat sink.
[0015] According to the inductor of the above embodiment, the coil has a heat dissipation surface exposed on the main body, and the heat dissipation surface is located on the inner side of the fence structure. The fence structure is arranged to protrude from the main body and can squeeze the heat dissipation pad attached to the heat dissipation surface, so that the heat dissipation pad is not easy to move relative to the inductor and cause wear. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 A three-dimensional view of an embodiment of an inductor of the present invention;
[0017] Figure 2 for Figure 1 Front view of the inductor in;
[0018] Figure 3 for Figure 1 Right side view of the inductor in;
[0019] Figure 4 for Figure 1 A top view of the inductor in FIG.
[0020] Figure 5 for Figure 1 Schematic diagram of application scenarios of inductors in FIG.
[0021] Reference numerals:
[0022] 1. Coil; 11. Heat dissipation surface; 2. Magnetic core; 21. Exposed surface; 3. Main body; 31. Insulating baffle; 4. Fence structure; 41. Toothed boss; 411. Positioning tooth; 4111. Anti-slip step; 42. Strip boss; 5. Temperature monitoring element; 6. Heat dissipation pad. DETAILED DESCRIPTION
[0023] The present invention is further described in detail below by means of specific embodiments in conjunction with the accompanying drawings. Similar elements in different embodiments are numbered with associated similar elements. In the following embodiments, many detailed descriptions are provided to enable the present application to be better understood. However, those skilled in the art will readily appreciate that some of the features may be omitted under different circumstances, or may be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification. This is to avoid the core portion of the present application being overwhelmed by excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail. They can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.
[0024] In addition, the features, operations, or characteristics described in the specification may be combined in any appropriate manner to form various embodiments. Furthermore, the steps or actions in the method description may be reordered or adjusted in a manner readily apparent to those skilled in the art. Therefore, the various sequences in the specification and drawings are provided solely for the purpose of clearly describing a particular embodiment and are not intended to be mandatory, unless otherwise specified.
[0025] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings).
[0026] Inductors are typically used in conjunction with a heatsink and heat sink. Specifically, the heatsink is placed between the inductor's heat dissipation surface and the heat sink. However, inductors may be used in environments subject to vibration. For example, automotive inductors are subject to constant vibration while driving. This vibration can easily cause the heatsink to move relative to the inductor, leading to vibration wear on the heatsink. To address this issue, a protruding fence structure can be installed on one side of the inductor's heat dissipation surface. This fence structure provides compression support for the heatsink, preventing it from moving.
[0027] According to the first aspect, please refer to Figure 1 In one embodiment, an inductor is provided, comprising a coil 1, a magnetic core 2, and an insulator. It should be understood that: Figure 1The inductor placement shown in the figure is only for the purpose of explaining the structure of the inductor for convenience. It does not represent the actual posture of the inductor in use, nor does it constitute a limitation on the posture of the inductor in use. Figure 5 , the fence structure 4 of the inductor can be arranged downward, and the heat dissipation pad 6 is located on the lower side of the fence structure 4.
[0028] The insulator includes a main body 3 and a fence structure 4. The main body 3 securely connects the coil 1 and the magnetic core 2. The insulator can be made of plastic or other insulating materials. The coil 1 and the magnetic core 2 can be fixed together by injection molding. Specifically, the magnetic core 2 is first placed inside the coil 1, and then the insulator formed by injection molding encases the magnetic core 2 and the coil 1.
[0029] The coil 1 has a heat dissipation surface 11 exposed from the main body 3. The heat dissipation surface 11 is located inside the fence structure 4. The fence structure 4 protrudes from the main body 3 and is used to press the thermal pad attached to the heat dissipation surface 11. Specifically, the area on the coil 1 not covered by the insulator can form the heat dissipation surface 11. The heat dissipation surface 11 can be set at the bottom of the inductor. The outer periphery of the heat dissipation surface 11 is provided with a protruding fence structure 4. Please refer to Figure 5 When the bottom of the inductor with the heat dissipation surface 11 is placed on the heat dissipation pad 6, the protruding fence structure 4 can squeeze the heat dissipation pad 6, and the heat dissipation pad 6 is not easy to move relative to the inductor to cause wear.
[0030] In addition, after the fence structure 4 squeezes the heat dissipation pad 6, the heat dissipation pad 6 is closer to the heat dissipation surface 11 inside the fence structure 4, and the contact with the heat dissipation surface 11 is more complete, the thermal conductivity of the heat dissipation pad 6 is improved, and the heat dissipation effect of the inductor is also improved.
[0031] In some embodiments, please refer to Figures 1-4 The fence structure 4 includes tooth-shaped protrusions 41 and strip-shaped protrusions 42, which enclose the fence structure 4. Specifically, the fence structure 4 can be a quadrilateral fence, wherein the tooth-shaped protrusions 41 and strip-shaped protrusions 42 can be arranged alternately. In other embodiments, the shape of the fence structure 4 can also be triangular, pentagonal, etc., which can be determined based on the shape of the heat dissipation surface 11.
[0032] In some embodiments, please refer to Figures 1-4 The tooth-shaped boss 41 includes a plurality of positioning teeth 411 arranged at intervals. Specifically, the positioning teeth 411 can be protrusions protruding from the main body 3. The provision of the positioning teeth 411 can increase the movement resistance of the heat dissipation pad 6, thereby improving the fixing effect of the fence structure 4 on the heat dissipation pad 6. In other embodiments, the positioning teeth 411 can also be bosses or cones protruding from the main body 3.
[0033] In some embodiments, please refer to Figures 1-4 The end of the positioning teeth 411 away from the main body 3 is provided with an anti-slip step 4111. The provision of the anti-slip step 4111 can increase the movement resistance of the heat dissipation pad 6, thereby further improving the fixing effect of the fence structure 4 on the heat dissipation pad 6. In other embodiments, a protrusion or groove can be provided on the end of the positioning teeth 411 away from the main body 3 to further improve the fixing effect on the heat dissipation pad 6.
[0034] In some embodiments, please refer to Figures 1-4 In the direction perpendicular to the heat dissipation surface 11, the tooth top surface of the positioning tooth 411 is flush with the top surface of the strip-shaped boss 42. In the above arrangement, when the inductor is placed on the heat dissipation pad 6, the inductor can be in a vertical state and is not prone to tipping over.
[0035] In some embodiments, please refer to Figures 1-4 Two strip-shaped protrusions 42 are provided, spaced apart on opposite sides of the heat dissipation surface 11. Two tooth-shaped protrusions 41 are provided, each disposed between the two strip-shaped protrusions 42 and forming a fence structure 4 with the two strip-shaped protrusions 42. The magnetic core 2 has an exposed surface 21 exposed from the main body 3, and the exposed surface 21 is located outside the fence structure 4. The strip-shaped protrusions 42 are provided as a barrier between the exposed surface 21 and the heat dissipation surface 11.
[0036] When designing an inductor, insulation creepage distances must be maintained between the coil 1 and the magnetic core 2, as well as between the coil 1 and the housing. For example, if the coil 1 is made of copper and the circuit system in which the inductor operates is 400 volts, a creepage distance of at least 8 mm is generally required between the exposed coil 1 and the exposed magnetic core 2. Therefore, the aforementioned strip-shaped protrusions 42 can isolate the heat dissipation surface 11 of the coil 1 from the exposed surface 21 of the magnetic core 2, and between the coil 1 and the housing, without significantly increasing the inductor's size. This increases creepage distances and improves the safety of the inductor.
[0037] In some embodiments, please refer to Figures 1-4 The inductor includes a first coil and a second coil, which are spaced apart. The main body 3 is provided with an insulating barrier 31, which is located between the first and second coils. Specifically, insulating barrier 31 can be made of plastic. Providing insulating barrier 31 between the first and second coils enhances electrical insulation between the two coils.
[0038] In some embodiments, please refer to Figures 1-4 The insulating baffle 31 is provided with a mounting hole for mounting a temperature monitoring element 5, which is used to monitor the temperature of the first coil and the second coil. Specifically, the temperature monitoring element 5 can be a thermocouple, which can monitor the temperature of the first coil and the second coil in real time.
[0039] According to the second aspect, an embodiment provides an inductor heat dissipation assembly, which includes an inductor, a heat dissipation pad 6 and a heat sink. The structure of the inductor is the same as the inductor structure described in any of the above embodiments. The thermal pad is located between the inductor and the heat sink to conduct the heat of the inductor to the heat sink.
[0040] The fence structure 4 of the inductor is arranged to protrude from the main body 3, and can squeeze the heat dissipation pad 6 attached to the heat dissipation surface 11, so that the heat dissipation pad 6 is not easy to move relative to the inductor and cause wear; at the same time, the fence structure 4 squeezes the heat dissipation pad 6, so that the heat dissipation pad 6 is fully fitted with the heat dissipation surface 11, thereby improving the heat dissipation effect of the inductor.
[0041] The above examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. Those skilled in the art of the present invention can make some simple deductions, modifications or substitutions based on the concept of the present invention.
Claims
1. An inductor, characterized in that: It includes a coil, a magnetic core and an insulator, the insulator includes a main body and a fence structure, the main body fixedly connects the coil and the magnetic core, the coil has a heat dissipation surface exposed to the main body, the heat dissipation surface is located on the inner side of the fence structure, the fence structure protrudes from the main body and is used to squeeze the thermal pad attached to the heat dissipation surface.
2. The inductor according to claim 1, wherein The fence structure includes a tooth-shaped boss and a strip-shaped boss, and the tooth-shaped boss and the strip-shaped boss enclose the fence structure.
3. The inductor according to claim 2, wherein: The tooth-shaped boss includes a plurality of positioning teeth, and the plurality of positioning teeth are arranged at intervals.
4. The inductor according to claim 3, wherein: An anti-slip step is provided on one end of the positioning tooth away from the main body.
5. The inductor according to claim 3, wherein: In a direction perpendicular to the heat dissipation surface, the tooth top surface of the positioning tooth is flush with the top surface of the strip-shaped boss.
6. The inductor according to claim 2, wherein: There are two strip-shaped bosses, which are spaced apart on opposite sides of the heat dissipation surface. There are two tooth-shaped bosses, which are both arranged between the two strip-shaped bosses and enclosed together with the two strip-shaped bosses to form the fence structure.
7. The inductor according to claim 2, wherein: The magnetic core has an exposed surface exposed to the main body, and the exposed surface is located outside the fence structure, and the strip-shaped boss is blocked and arranged between the exposed surface and the heat dissipation surface.
8. The inductor according to any one of claims 1 to 7, wherein: The inductor includes a first coil and a second coil, the first coil and the second coil are arranged at an interval, and the main body is provided with an insulating barrier, and the insulating barrier is located between the first coil and the second coil.
9. The inductor according to claim 8, wherein The insulating baffle is provided with a mounting hole, the mounting hole is used to install a temperature monitoring element, and the temperature monitoring element is used to monitor the temperature of the first coil and the second coil.
10. An inductor heat dissipation component, characterized in that: The device comprises the inductor according to any one of claims 1 to 9, a heat dissipation pad, and a heat sink, wherein the heat dissipation pad is located between the inductor and the heat sink to conduct the heat of the inductor to the heat sink.