Electric reactor

Abstract

The utility model discloses an electric reactor which comprises a magnetic core and a coil, the magnetic core is of a closed magnetic core structure, the coil is wound on one side of the magnetic core, and a gap is formed between the coil and the magnetic core. According to the electric reactor, the magnetic core of the closed magnetic core structure is arranged, the coil is wound on one side of the magnetic core, the characteristics of the closed magnetic core structure are used for preventing magnetic field leakage and improving the electromagnetic compatibility, the gap is formed between the coil and the magnetic core, the coil is exposed in the air as much as possible, the heat dissipation efficiency is improved, and the service life of the electric reactor is prolonged. Therefore, the reactor has good heat dissipation performance, an extra lead structure is not needed, the reactor is connected with the power board through a lead, and the material cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic component technical field especially relates to a reactor. BACKGROUND

[0002] New energy technology is developing rapidly in the world, and the converter is an indispensable part of new energy technology. The existing converter often uses a reactor to suppress the current on the power board. The magnetic core of the coil of the existing reactor is prone to magnetic field leakage, and the leaked magnetic field will interfere with other devices, resulting in poor electromagnetic compatibility (EMC). SUMMARY

[0003] The technical problem to be solved by the utility model is to provide a reactor to improve the electromagnetic compatibility of the reactor.

[0004] To solve the above technical problems, the utility model aims to realize the following technical scheme: a reactor is provided, which comprises a magnetic core and a coil. The magnetic core is a closed magnetic core structure. The coil is wound around one side of the magnetic core. A gap is formed between the coil and the magnetic core.

[0005] A further technical solution is that the magnetic core comprises a winding column and three edge columns. The three edge columns and the winding column are enclosed to form a closed magnetic core structure. The coil is wound around the winding column. The two ends of the winding column extend out of the coil and are respectively connected to one end of two edge columns.

[0006] A further technical solution is that the winding column and the edge column are integrally formed.

[0007] A further technical solution is that the three edge columns comprise a main edge column opposite to the winding column and two side edge columns opposite to each other. One end of the side edge column is connected to the winding column, and the other end of the side edge column is connected to the main edge column.

[0008] A further technical solution is that the width of the side edge column gradually increases away from the winding column.

[0009] A further technical solution is that a middle space is formed between the winding column and the coil.

[0010] A further technical solution is that the magnetic core is made of ferrite, iron-silicon-aluminum and / or nanocrystalline.

[0011] A further technical solution is that the winding column has a columnar structure.

[0012] A further technical solution is that the coil is made of copper, aluminum and / or copper-clad aluminum.

[0013] The utility model discloses beneficial technical effects lie in: the utility model discloses the reactor through setting up the magnetic core of closed magnetic core structure and the coil of one side of magnetic core, with the characteristic of closed magnetic core structure prevents the magnetic field leakage, improves electromagnetic compatibility, and the gap is formed between the coil and the magnetic core, to make the coil as far as possible expose in the air, improve the heat dissipation efficiency, make the reactor have better heat dissipation performance, and need not set up the lead structure and lead the connection of reactor and power board. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the utility model embodiment technical scheme, the following will be needed to use the drawing in the embodiment description briefly introduces, obviously, the following description in the drawing is some embodiments of the utility model, for those skilled in the art, under the premise of not paying creative labor, can also obtain other drawings according to these drawings.

[0015] Fig. 1 The utility model provides the structure schematic diagram of reactor for the embodiment of the utility model;

[0016] Fig. 2 The utility model provides the front view of reactor for the embodiment of the utility model;

[0017] Fig. 3 The utility model provides the schematic diagram of reactor concrete application for the embodiment of the utility model. DETAILED DESCRIPTION

[0018] The technical scheme in the embodiment of the utility model will be described clearly and completely in the embodiment of the utility model, obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment of the utility model. Based on the embodiment in the utility model, all other embodiments obtained by those skilled in the art without making creative labor belong to the scope of the utility model protection.

[0019] Please refer to Figs. 1 to 3 , Fig. 1 The utility model provides the structure schematic diagram of reactor for the embodiment of the utility model, the reactor 10 includes magnetic core 11 and coil 12, the magnetic core 11 is closed magnetic core structure, one side of the magnetic core 11 is wound with the coil 12, and the gap is formed between the coil 12 and the magnetic core 11.

[0020] Wherein, the first end of coil 12 and the second end of coil 12 are oppositely arranged along the radial direction parallel to the winding column 111 and located on the same side of the magnetic core 11 to form the lead convenient for connecting with the power board 20, which facilitates the quick installation of the reactor 10 on the power board 20. The first end of coil 12 and the second end of coil 12 can be installed on the power board 20 by welding or dispensing. The specific application state of the reactor 10 installed on the power board 20 is as shown in Fig.Fig. 3 As shown, the electric reactor 10 is applicable to photovoltaic inverters, wind power converters and / or frequency converters, etc. The electric reactor 10 is provided with a magnetic core 11 enclosing a magnetic core structure, and a coil 12 is wound on one side of the magnetic core 11, so as to prevent magnetic field leakage by using the characteristics of the enclosed magnetic core structure, improve electromagnetic compatibility, and a gap is formed between the coil 12 and the magnetic core 11, so as to expose the coil 12 to air as much as possible, improve heat dissipation efficiency, so that the electric reactor 10 has good heat dissipation performance, and without setting an additional lead structure and connecting the electric reactor 10 and the power board 20 by lead, the material cost can be reduced.

[0021] Specifically, in the embodiment, the magnetic core 11 includes a winding column 111 and three edge columns, and the three edge columns and the winding column 111 are enclosed to make the magnetic core 11 an enclosed magnetic core structure, and the coil 12 is wound on the winding column 111, and two ends of the winding column 111 extend out of the coil 12 and are connected to one end of two edge columns respectively.

[0022] Specifically, the winding column 111 and the edge column are integrally formed.

[0023] Specifically, in the embodiment, the first end and the second end of the coil 12 are located on the side of the winding column 111 away from the supporting plate 112. Of course, in some examples, the first end and the second end of the coil 12 can be located on the side of the winding column 111 close to the cover plate 113.

[0024] Specifically, the coil 12 can be made of copper, aluminum and / or copper-clad aluminum, but is not limited thereto.

[0025] Specifically, the magnetic core 11 can be made of ferrite, iron-silicon-aluminum and / or nanocrystalline, but is not limited thereto.

[0026] Specifically, in the embodiment, the winding column 111 is in a cylindrical shape, and of course, in some embodiments, the winding column 111 can be in a polygonal columnar structure. The shape and size of the winding column 111 can be designed according to specific needs.

[0027] Preferably, in the embodiment, the cross section of the magnetic core passage formed by the coil 12 around the winding column 111 is circular. Of course, in some embodiments, the cross section of the magnetic core passage formed by the coil 12 around the winding column 111 can be polygonal. The number of turns of the coil 12 is set according to the inductance required by the actual circuit. The wire length of the coil 12 can be adjusted and designed according to the space position and heat dissipation demand in actual application.

[0028] Preferably, the coil 12 and the magnetic core 11 are adhesively fixed. Of course, in some embodiments, the coil 12 and the magnetic core 11 are fixed by a skeleton connection support.

[0029] Specifically, in the embodiment, the three side columns include a main side column 113 opposite to the winding column 111 and two side columns 112 opposite to each other, one end of the side column 112 is connected to the winding column 111, and the other end of the side column 112 is connected to the main side column 113.

[0030] Specifically, in the embodiment, a space 101 is formed between the winding column 111 and the coil 12 to further expand the contact area of the coil 12 and the air. A gap is formed between the coil 12 and the side column 112, and a gap is formed between the coil 12 and the main side column 113, so that the coil 12 is exposed to the air as much as possible, and the heat dissipation efficiency is improved.

[0031] Specifically, the width of the side column 112 gradually increases away from the winding column 111.

[0032] In summary, the reactor of the utility model has the advantages that the magnetic core of the closed magnetic core structure is arranged, and the coil is arranged on one side of the magnetic core, the characteristics of the closed magnetic core structure are utilized to prevent the magnetic field from leaking, the electromagnetic compatibility is improved, a gap is formed between the coil and the magnetic core, the coil is exposed to the air as much as possible, the heat dissipation efficiency is improved, the reactor has good heat dissipation performance, and no additional lead structure is arranged to connect the reactor and the power board.

[0033] The above is only a specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the utility model, and these modifications or replacements should be covered in the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the protection scope of the claims.

Claims

1. A reactor, characterized by The magnetic core is a closed magnetic core structure, and a coil is wound on one side of the magnetic core, and a gap is formed between the coil and the magnetic core.

2. The reactor of claim 1, wherein The magnetic core comprises a winding column and three edge columns, and the three edge columns and the winding column are closed to form a closed magnetic core structure, and the coil is wound on the winding column, and two ends of the winding column extend out of the coil and are connected to one end of two edge columns respectively.

3. The reactor of claim 2, wherein The winding column and the edge column are integrally formed.

4. The reactor of claim 2, wherein The three edge columns comprise a main edge column opposite to the winding column and two side edge columns opposite to each other, one end of the side edge column is connected to the winding column, and the other end of the side edge column is connected to the main edge column.

5. The reactor of claim 4, wherein, The width of the side edge column gradually increases away from the winding column.

6. The reactor of claim 2, wherein, A middle space is formed between the winding column and the coil.

7. The reactor of claim 1, wherein The magnetic core is made of ferrite, iron-silicon-aluminum and / or nanocrystalline.

8. The reactor of claim 2, wherein, The winding column has a columnar structure.

9. The reactor of claim 1, wherein, The coil is made of copper, aluminum and / or copper-clad aluminum.

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