Integrally-formed double-coil coupling inductor

Abstract

The utility model discloses an integrated double-coil coupling inductor which comprises an inductor body, first pins are fixedly connected to the front face and the back face of the inductor body in a penetrating mode, second pins are fixedly connected to the two sides of the inductor body in a penetrating mode, and an inductor magnetic core is fixedly connected to the interior of the inductor body. A first coupling coil and a second coupling coil are installed on the outer side of the inductor magnetic core, an installation groove is formed in the top of the inductor body, a heat dissipation opening is formed in the position, located in the center of the installation groove, of the top of the inductor body in a penetrating mode, and the top of the inductor body is fixedly connected with a heat dissipation plate through the installation groove. The top of the inductor body is fixedly connected with a heat dissipation plate through an installation groove, the top of the heat dissipation plate is fixedly connected with heat dissipation fins, and through openings are formed in the top of the heat dissipation plate and the top of the heat dissipation fins in a penetrating mode. The performance of the double-coil coupling inductor is ensured, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of coupled inductors, in particular to an integrally formed dual-coil coupled inductor. Background Technique

[0002] An inductance element is also called a self-inductance element. If the magnetic flux generated by each of two or more coils intersects with another coil, these coils are said to have magnetic coupling or mutual inductance. Assuming these coils are stationary and ignoring the resistance in the coils and the distributed capacitance between turns, the coils with magnetic coupling can be represented as idealized coupled inductance elements, simply referred to as coupled inductors.

[0003] After retrieval, Chinese Patent Publication No. CN212209177U discloses an integrally formed dual-coil coupled inductor, which includes an inductance magnet and an inductance conductor buried inside the inductance magnet. The inductance magnet and the inductance conductor are integrally formed. The inductance conductor includes two coupled coils stacked up and down. The two coupled coils are coaxial and parallel to each other inside the inductance magnet. Each coupled coil is wound by a wire, and the two end leads of each coupled coil extend out of the inductance magnet and are bent and attached to the outer surface of the inductance magnet. The utility model is formed by stacking two identical or different coupled coils up and down and then molding. The two coupled coils inside it are cross-set and both have a completely closed magnetic circuit, ensuring the magnetic circuit characteristics of the finally processed coupled inductor finished product, with good shielding effect, and the coupling coefficient is about between 0.6 and 0.8, and the coupling is strong.

[0004] However, in the process of using the existing integrally formed dual-coil coupled inductor, when the magnetic core of the inductor is repeatedly magnetized in an alternating magnetic field, a part of the energy will be consumed and converted into heat, and heat will also be generated when the inductor generates resistance. Due to the heat dissipation effect of the dual-coil coupled inductor, it affects the performance and service life of the dual-coil coupled inductor. Therefore, it is necessary to design an integrally formed dual-coil coupled inductor. Summary of the Utility Model

[0005] The main purpose of the utility model is to provide an integrally formed dual-coil coupled inductor, which can effectively solve the problem in the background technique that due to the heat dissipation effect of the dual-coil coupled inductor, it affects the performance and service life of the dual-coil coupled inductor.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] Integrally formed dual - coil coupled inductor, including an inductor body. The front and back of the inductor body are fixedly connected through first pins. The two sides of the inductor body are fixedly connected through second pins. An inductor core is fixedly connected inside the inductor body. A first coupling coil and a second coupling coil are respectively installed on the outer side of the inductor core. An installation groove is formed at the top of the inductor body. A heat dissipation port is formed through the center position of the installation groove at the top of the inductor body. The top of the inductor body is fixedly connected with a heat dissipation plate through the installation groove. A heat dissipation fin is fixedly connected to the top of the heat dissipation plate. A through - hole is formed through the top of the heat dissipation plate and the heat dissipation fin.

[0008] In order to enable the coupled inductor to dissipate heat quickly, as the integrally formed dual - coil coupled inductor of the present utility model, a plurality of heat dissipation fins are provided. The plurality of heat dissipation fins are arranged at equal intervals respectively. The plurality of heat dissipation fins and the heat dissipation plate are of an integral structure. The heat dissipation fins and the heat dissipation plate are both processed from aluminum.

[0009] In order to isolate the first coupling coil and the second coupling coil to avoid connection, as the integrally formed dual - coil coupled inductor of the present utility model, a separator plate is fixedly connected between the first coupling coil and the second coupling coil on the outer side of the inductor core.

[0010] In order to facilitate the installation of the coupled inductor by the staff, as the integrally formed dual - coil coupled inductor of the present utility model, two first pins are provided. The two first pins and the first coupling coil are of an integral structure.

[0011] In order to facilitate the installation of the coupled inductor by the staff, as the integrally formed dual - coil coupled inductor of the present utility model, two second pins are provided. The two second pins and the second coupling coil are of an integral structure.

[0012] In order to enable the inductor core to concentrate and enhance the magnetic field, as the integrally formed dual - coil coupled inductor of the present utility model, the inductor core is cylindrical and the inductor core is of a hollow structure.

[0013] Compared with the prior art, the present utility model has the following beneficial effects:

[0014] 1. In the present utility model, through the provided heat dissipation openings, heat dissipation plates, and heat dissipation fins, when using a double - coil coupled inductor, the staff installs the first pin and the second pin at corresponding positions on the circuit board according to the installation requirements, leaving a certain gap between the double - coil coupled inductor and the circuit board. And when heat is generated during the operation of the double - coil coupled inductor, due to the existence of certain gaps between the heat dissipation openings and the inductor body, as well as between the inductor body and the circuit board, gas can flow into the cavity between the inductor body and the circuit board through the gaps. At the same time, the gas enters the heat dissipation openings to take away the heat. Since both the heat dissipation fins and the heat dissipation plates are made of aluminum, they have good thermal conductivity, and the heat on the inductor body will be absorbed by the heat dissipation plates and heat dissipation fins. When the heat dissipation plates and heat dissipation fins absorb heat, due to the large surface area of the heat dissipation fins, the heat can be quickly transferred to the surrounding environment. Therefore, the heat dissipation effect of the double - coil coupled inductor is improved, ensuring that the double - coil coupled inductor can exert its own performance and also improving its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 is a cross - sectional view of the first coupling coil of the present utility model;

[0017] Figure 3 is a cross - sectional view of the second coupling coil of the present utility model;

[0018] Figure 4 is a partial structural schematic diagram of the heat dissipation plate of the present utility model;

[0019] Figure 5 is a partial structural schematic diagram of the inductor body of the present utility model.

[0020] In the figure: 1, inductor body; 2, first pin; 3, second pin; 4, installation groove; 5, heat dissipation plate; 6, heat dissipation fin; 7, through - hole; 8, first coupling coil; 9, second coupling coil; 10, inductor core; 11, isolation plate; 12, heat dissipation opening. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present utility model.

[0022] Embodiment

[0023] Such as Figures 1-5As shown in the figure, an integrally formed dual-coil coupled inductor includes an inductor main body 1. A first pin 2 is fixedly connected through the front and back of the inductor main body 1. Second pins 3 are fixedly connected through both sides of the inductor main body 1. An inductor core 10 is fixedly connected inside the inductor main body 1. A first coupling coil 8 and a second coupling coil 9 are respectively installed on the outer side of the inductor core 10. An installation groove 4 is formed at the top of the inductor main body 1. A heat dissipation port 12 is formed through the center position of the installation groove 4 at the top of the inductor main body 1. The top of the inductor main body 1 is fixedly connected to a heat dissipation plate 5 through the installation groove 4. A heat sink 6 is fixedly connected to the top of the heat dissipation plate 5. A through hole 7 is formed through the top of the heat dissipation plate 5 and the heat sink 6.

[0024] During specific use, when heat is generated during the operation of the dual-coil coupled inductor, due to certain gaps existing between the heat dissipation port 12 and the inductor main body 1, and between the inductor main body 1 and the circuit board, gas can flow into the cavity between the inductor main body 1 and the circuit board through the gaps. At the same time, the gas enters the heat dissipation port 12 to take away the heat.

[0025] In this embodiment, a plurality of heat sinks 6 are provided. The plurality of heat sinks 6 are respectively arranged at equal distances. The plurality of heat sinks 6 and the heat dissipation plate 5 are of an integral structure. The heat sinks 6 and the heat dissipation plate 5 are both processed from aluminum.

[0026] During specific use, since the heat sinks 6 and the heat dissipation plate 5 are processed from aluminum, the heat on the inductor main body 1 will be absorbed by the heat dissipation plate 5 and the heat sinks 6. When the heat dissipation plate 5 and the heat sinks 6 absorb heat, due to the large surface area of the heat sinks 6, the heat can be quickly transferred to the surrounding environment.

[0027] In this embodiment, a separator plate 11 is fixedly connected between the first coupling coil 8 and the second coupling coil 9 on the outer side of the inductor core 10.

[0028] During specific use, the first coupling coil 8 and the second coupling coil 9 can be separated by the separator plate 11 to prevent the first coupling coil 8 and the second coupling coil 9 from being connected.

[0029] In this embodiment, two first pins 2 are provided. The two first pins 2 and the first coupling coil 8 are of an integral structure.

[0030] During specific use, the first pins 2 facilitate the installation of the coupled inductor by the staff.

[0031] In this embodiment, two second pins 3 are provided. The two second pins 3 and the second coupling coil 9 are of an integral structure.

[0032] During specific use, the second pins 3 facilitate the installation of the coupled inductor by the staff.

[0033] In this embodiment, the inductance core 10 is cylindrical, and the inductance core 10 is a hollow structure.

[0034] During specific use, due to the high magnetic permeability of the inductance core 10, the magnetic field can be concentrated and enhanced.

[0035] Working principle: When using the double-coil coupled inductor, the staff installs the first pin 2 and the second pin 3 at the corresponding positions on the circuit board according to the installation requirements, so that there is a certain gap between the double-coil coupled inductor and the circuit board. And when heat is generated during the operation of the double-coil coupled inductor, since there are certain gaps between the heat dissipation port 12 and the inductor body 1, and between the inductor body 1 and the circuit board, gas can flow into the cavity between the inductor body 1 and the circuit board through the gaps. At the same time, the gas enters the heat dissipation port 12 to take away the heat. Since both the heat sink 6 and the heat dissipation plate 5 are made of aluminum, they have good thermal conductivity, and the heat on the inductor body 1 will be absorbed by the heat dissipation plate 5 and the heat sink 6. When the heat dissipation plate 5 and the heat sink 6 absorb heat, due to the large surface area of the heat sink 6, the heat can be quickly transferred to the surrounding environment.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. Integrated one-piece double-coil coupled inductor, comprising an inductor body (1), characterized in that: The front and back of the inductor body (1) are fixedly connected through the first pins (2), the two sides of the inductor body (1) are fixedly connected through the second pins (3), an inductor core (10) is fixedly connected inside the inductor body (1), a first coupling coil (8) and a second coupling coil (9) are respectively installed outside the inductor core (10), an installation groove (4) is formed at the top of the inductor body (1), a heat dissipation port (12) is formed through the center of the installation groove (4) at the top of the inductor body (1), the heat dissipation plate (5) is fixedly connected to the top of the inductor body (1) through the installation groove (4), heat dissipation fins (6) are fixedly connected to the top of the heat dissipation plate (5), and a through hole (7) is formed through the top of the heat dissipation plate (5) and the heat dissipation fins (6).

2. The one-piece molded dual-coil coupled inductor according to claim 1, wherein: A plurality of the heat dissipation fins (6) are provided, the plurality of heat dissipation fins (6) are arranged at equal intervals respectively, the plurality of heat dissipation fins (6) and the heat dissipation plate (5) are of an integral structure, and the heat dissipation fins (6) and the heat dissipation plate (5) are both processed from aluminum materials.

3. The one-piece molded dual-coil coupled inductor according to claim 1, characterized in that: A partition plate (11) is fixedly connected between the first coupling coil (8) and the second coupling coil (9) on the outside of the inductor core (10).

4. The one-piece molded dual-coil coupled inductor according to claim 1, wherein: Two of the first pins (2) are provided, and the two first pins (2) and the first coupling coil (8) are of an integral structure.

5. The one-piece molded dual-coil coupled inductor according to claim 1, wherein: Two of the second pins (3) are provided, and the two second pins (3) and the second coupling coil (9) are of an integral structure.

6. The one-piece molded dual-coil coupled inductor according to claim 1, wherein: The inductor core (10) is cylindrical and the inductor core (10) is of a hollow structure.

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