CN115472392A - A high-current annular vertically wound inductor and its winding method - Google Patents

Abstract

The invention discloses a high-current annular vertical winding inductor and a winding method thereof, belonging to the technical field of electrical elements and comprising an inductor main body and a shielding case, wherein the inductor main body comprises an iron core and a vertical winding coil, the vertical winding coil is a plurality of coils formed by vertically winding a flat wire around an annular iron core to form a plurality of windings, and the outer edge surface of the iron core is provided with an annular heat dissipation groove; the shielding cover comprises a base and a metal cover, the metal cover is fixed on the upper end face of the base and used for placing the inductor main body, cooling oil is filled in the metal cover, an opening is formed in the top of the metal cover, a metal sealing cover is installed on the metal cover, and an insulating mechanism used for fixing the inductor main body is arranged on the lower end face of the metal sealing cover. According to the high-current annular vertical winding inductor and the winding method thereof, the plurality of radiating grooves are formed in the iron core and matched with the cooling oil in the metal cover, so that the radiating effect is improved, the high-current annular vertical winding inductor can be suitable for a high-current environment for a long time, and is safe and stable.

Description

A high-current annular vertically wound inductor and its winding method

technical field

The invention belongs to the technical field of electrical components, and in particular relates to a high-current annular vertically wound inductor and a winding method thereof.

Background technique

Inductors are components that can convert electrical energy into magnetic energy and store it. Inductors are generally composed of skeletons, windings, shields, packaging materials, magnetic cores or iron cores. Inductors have a certain inductance, which can hinder the change of current. Specifically, if the inductor is in the state of no current passing through, it will try to prevent the current from flowing through it when the circuit is turned on; if the inductor is in the state of passing current , it will attempt to maintain a constant current flow when the circuit is open.

In the existing inductors, in order to effectively improve the electromagnetic interference caused by the leakage magnetic field in the closed magnetic circuit of the high-frequency inductance, and the eddy current loss formed by the winding conductor due to the leakage magnetic field, the winding wire is generally wound on the ring core evenly. However, when the ring-shaped vertically wound inductor made by this process is used, due to its densely stacked winding, the total contact area between the conductor and the external air becomes smaller and surrounds the magnetic core, thereby affecting the heat dissipation effect of the inductor. At present, , in order to obtain high inductance as much as possible, a large current is generally passed through to generate more heat. Therefore, the existing ring-shaped vertically wound inductor structure is difficult to work for a long time under high current and cannot meet the actual needs. Further research is needed. optimization.

For this reason, we propose a high-current annular vertically wound inductor and its winding method to solve the above problems.

Contents of the invention

The purpose of the present invention is to solve the problem in the prior art that the heat dissipation effect of the existing annular vertically wound inductor is limited when used, resulting in poor heat dissipation effect and difficult to support long-term stable work in a high-current working environment. A high-current annular vertically wound inductor and its winding method are proposed.

In order to achieve the above object, the present invention adopts the following technical solutions:

A high-current annular vertically wound inductor, comprising an inductor main body and a shielding cover, the inductor main body includes an iron core and a vertically wound coil, and the vertically wound coil is a flat wire wound vertically around the annular iron core core The plurality of coils formed form a plurality of windings, and an annular cooling groove is opened on the outer edge surface of the iron core;

The shielding cover includes a base and a metal cover, the metal cover is fixed on the upper end surface of the base, and the inductor main body is placed in, and the metal cover is filled with cooling oil, and the metal cover There is an opening at the top of the top, and a metal sealing cover is installed, and the lower end surface of the metal sealing cover is provided with an insulating mechanism for fixing the inductor main body.

Compared with the prior art, the structure of the high-current annular vertically wound inductor and its winding method is simple in the present invention through the above-mentioned technical scheme, and a plurality of heat dissipation slots are provided on the iron core, and the cooling in the metal cover is coordinated. The use of oil greatly improves the heat dissipation effect, so that the main body of the inductor can be used in a high current environment for a long time, which is safe and stable.

Further, the iron core is a ring structure formed by splicing two semi-ring magnet blocks.

Through the above-mentioned technical solution, the iron core is formed by splicing two semi-annular magnetic blocks, which is beneficial to quickly sleeve the winding on the iron core.

Further, the heat dissipation groove is an annular groove formed by butting two semi-annular grooves, and the two semi-annular grooves of the heat dissipation groove are respectively opened on the surface of the two semi-annular magnetic blocks of the iron core.

Through the above technical solution, the arrangement of the heat dissipation groove can increase the surface area of the iron core, which is beneficial to heat dissipation.

Further, the base is provided with a plurality of fixing holes, and the fixing holes are located at the edge of the base.

Through the above technical solution, the fixing hole can cooperate with components such as bolts for fixing.

Further, the insulating mechanism provided on the lower end surface of the metal sealing cover includes an insulating plate and an insulating column, the insulating plate is placed on the inner bottom surface of the inductor main body, and the insulating column is fixed in the middle of the upper end surface of the insulating plate .

Through the above technical solution, the main body of the inductor can be fixed by using the insulating plate and the insulating post.

Further, the top of the insulating column is provided with a threaded socket, and the middle part of the lower end surface of the metal sealing cover is configured with a threaded column, and the threaded column is screwed into the threaded socket to form a fixation.

Through the above technical solution, the insulating column can be fixed by threaded insertion of the threaded socket and the threaded column, which is convenient for disassembly and assembly.

Further, the main body of the inductor surrounds the insulating column and is placed on the upper end surface of the insulating plate, and a plurality of elastic pieces are symmetrically fixed in the middle of the insulating column, and the elastic pieces elastically abut against the inside the inductor body.

Through the above technical solution, the inductor main body can be installed in the shielding case and the elastic sheet can be used to elastically contact the inside of the inductor main body of different specifications, so that the inductor main body of different specifications can be installed on the insulating column, improving the versatility of the device.

A winding method for a high-current annular vertically wound inductor, which is suitable for any one of the high-current annular vertically wound inductors described above, comprising the following steps:

S1. Open a ring-shaped cooling groove on the surface of the ring-shaped magnetic core;

S2, cutting the annular magnetic core in the above S1 into two semi-annular magnetic blocks;

S3, vertically wind the flat wire into a square vertically wound coil;

S4. Insert the two semi-annular magnetic blocks in S2 into the square vertical coil in S3;

S5, connecting the other ends of the two semi-annular magnetic blocks to form an annular magnetic core;

S6, bonding the butt joint gap on the annular magnetic core in S5 above.

Through the above technical scheme, using flat wires to form a plurality of square vertical winding coils connected end to end, and cooperating with the butt joint of two semi-annular magnetic blocks, the square vertical winding coil can be quickly sleeved on the semi-annular magnetic block, and using the semi-annular The butt joint of the magnetic blocks forms a ring-shaped vertically wound inductor.

Further, in S3, there are multiple square vertical coils formed by vertical winding of flat wires, and the multiple square vertical coils are connected end to end to form a spring-like structure.

Through the above technical solution, the flat wire can be directly formed into a continuous square vertical winding coil without sequential winding along the magnetic core, thereby improving the winding efficiency.

Further, in S4, the two semi-annular magnetic blocks are respectively inserted from both ends of the whole formed by a plurality of end-to-end square vertical winding coils until one end of the two semi-annular magnetic blocks is inserted into the square vertical coil. Wound in the coil and docked, and the other ends of the two semi-annular magnetic blocks are respectively located at the two ends of the continuous square vertical winding coil, to be bonded.

Through the above technical proposal, the continuous square vertical winding coil can be combined with the magnetic core to complete the winding work of the flat wire on the magnetic core.

In summary, technical effects and advantages of the present invention:

1. The high-current annular vertically wound inductor and its winding method, compared with the prior art, the structure of the present invention is simple, by opening a plurality of cooling grooves on the iron core, and cooperating with the cooling oil in the metal cover , so that the heat dissipation effect of the inductor body in the present invention is greatly improved compared with the traditional inductor, so that the inductor body of the present invention can be used in a high current environment for a long time, and the use effect is safe and stable;

2. At the same time, with the setting of the shielding cover, the main body of the inductor can be firmly fixed, the overall mechanical strength of the device is enhanced, and the magnetic field generated by the main body of the inductor can be prevented from affecting the normal operation of other circuits and components. The shielding cover can also be used to fix inductor bodies of different specifications through the cooperation of the insulating plate, the insulating column and the elastic sheet, which has strong versatility.

Description of drawings

Fig. 1 is the front view of the inductor main body of the present invention;

Fig. 2 is the top view of the inductor main body of the present invention;

Fig. 3 is the structural representation of iron core of the present invention;

Fig. 4 is the schematic diagram of shielding case of the present invention;

Fig. 5 is a structural schematic diagram of the cooperation between the inductor main body and the shielding case of the present invention;

FIG. 6 is an enlarged schematic view of the structure at A in FIG. 5 of the present invention.

In the figure: 1, inductor main body; 101, iron core; 102, vertical winding coil; 103, heat sink; 2, shielding cover; 201, base; 20101, fixing hole; 202, metal cover; 203, metal sealing cover; 20301, electrical connecting wire; 20302, threaded column; 4, insulating plate; 5, insulating column; 501, threaded jack; 6, elastic sheet.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

Referring to Fig. 1, Fig. 2 and Fig. 3, a high-current annular vertically wound inductor includes an inductor body 1 and a shielding case 2, the inductor body 1 includes an iron core 101 and a vertically wound coil 102, and the vertically wound The coil 102 is a plurality of coils formed by vertically winding flat wires around the annular iron core 101 to form a plurality of windings, and the iron core 101 is a ring structure formed by splicing two semi-annular magnetic blocks, so The iron core 101 is spliced by two semi-annular magnetic blocks, so that each semi-annular magnetic block can be placed in both ends of the vertical winding coil 102 before splicing, so that the vertical winding coil 102 can be quickly set on the two ends of the vertical winding coil 102. On the semi-annular magnetic block, so that when the two semi-annular magnetic blocks are butted to form the annular iron core 101, the vertical winding coil 102 can be quickly sleeved on the iron core 101, which is conducive to improving the winding efficiency.

At the same time, an annular heat dissipation groove 103 is provided on the outer edge of the iron core 101. Specifically, the heat dissipation groove 103 is an annular groove body formed by the butt joint of two semi-circular groove bodies, and the two heat dissipation grooves 103 Sectional semi-annular grooves are respectively opened on the surfaces of the two semi-annular magnetic blocks of the iron core 101 , therefore, the surface area of the iron core 101 can be increased by setting the cooling groove 103 , thereby facilitating heat dissipation.

During specific implementation, a winding method of a high-current annular vertically wound inductor, which is suitable for the above-mentioned high-current annular vertically wound inductor, mainly includes the following steps:

S1. Open a ring-shaped cooling groove on the surface of the ring-shaped magnetic core;

S2, cutting the annular magnetic core in the above S1 into two semi-annular magnetic blocks;

S3. Vertically wind the flat wires into a plurality of square vertically wound coils 102 connected end to end;

S4. Insert the two semi-annular magnetic blocks in S2 respectively from both ends of the square vertical winding coil 102 in S3 until one end of the two semi-annular magnetic blocks is docked;

S5, connecting the other ends of the two semi-annular magnetic blocks to form an annular magnetic core;

S6, bonding the butt joint gap on the annular magnetic core in S5 above.

Therefore, the winding method of this high-current annular vertically wound inductor can utilize flat wires to form a plurality of square vertically wound coils 102 connected end to end, and cooperate with the butt joint of two semi-circular magnetic blocks to quickly place the square vertically wound coils 102 It is sleeved on the semi-annular magnetic block, and the annular vertical wound inductor is formed by the butt joint of the semi-annular magnetic block.

4, 5 and 6, the shielding case 2 includes a base 201 and a metal cover 202, the base 201 is provided with a plurality of fixing holes 20101, and the fixing holes 20101 are located at the edge of the base 201, so that The shielding cover 2 can be fixed by cooperation of the fixing holes 20101 with bolts and other components, which is convenient to use.

And the metal cover 202 is fixed on the upper end surface of the base 201, and for the inductor main body 1 to be inserted, and the metal cover 202 is filled with cooling oil. During specific implementation, the cooling oil can be The oil in the oil-immersed transformer can improve the overall heat dissipation efficiency of the inductor main body 1 through the cooperation of the oil liquid and the cooling groove 103 on the iron core 101, which is beneficial to the long-term operation of the inductor main body 1 in a high-current environment. Stable operation.

At the same time, the top of the metal cover 202 is provided with an opening, and a metal sealing cover 203 is sealed and installed at the opening. The lower end surface of the metal sealing cover 203 is provided with an insulating mechanism for fixing the inductor main body 1. plate 4 and insulating column 5, the insulating plate 4 is placed on the inner bottom surface of the inductor main body 1, and the insulating column 5 is fixed on the middle part of the upper end surface of the insulating plate 4, so that the inductor main body 1 surrounds the The insulating post 5 is placed on the upper end surface of the insulating plate 4 to install the inductor main body 1 in the shielding case 2 . And the top of the insulating post 5 is provided with a threaded socket 501, and the middle part of the lower end surface of the metal sealing cover 203 is configured with a threaded post 20302, and the threaded post 20302 is screwed into the threaded socket 501 to form a fixation, thereby The insulating plate 4 and the insulating post 5 can be fixed by screwing the threaded socket 501 and the threaded post 20302 as a whole, which is convenient for disassembly and assembly.

During specific implementation, two electrical connection wires 20301 are sealed and fixed on the metal sealing plate 203, one end of the electrical connection wire 20301 extends out of the metal cover 2, and can be used for accessing the circuit, the other end of the electrical connection wire 20301 It protrudes into the metal cover 2 and can be connected and fixed with the inductor main body 1 by soldering.

Referring to FIG. 5 , a plurality of elastic sheets 6 are symmetrically fixed in the middle of the insulating column 5 , and the elastic sheets 6 elastically abut against the inner side of the inductor main body 1 , so that the insulating plate 4 and the insulating column 5 The inductor main body 1 can be elastically contacted by the elastic sheet 6 from the inner side, so that the inductor main body 1 of different specifications can be installed on the insulating post 5, which improves the versatility of the device.

Working principle: the high-current annular vertically wound inductor and its winding method, compared with the prior art, the structure of the present invention is simple, by opening a plurality of cooling slots 103 on the iron core 101, and cooperating with the metal cover 202 The oil used for cooling greatly improves the heat dissipation effect, so that the inductor main body 1 can be used in a high current environment for a long time, and is safe and stable.

During specific use, flat wires can be used to form a plurality of square vertical winding coils 102 connected end to end, and with the docking of two semi-circular magnetic blocks, the square vertical winding coils 102 can be quickly sleeved on the semi-circular magnetic blocks, and use The butt joint of the half-ring magnetic blocks forms a ring-shaped vertically wound inductor, that is, the inductor main body 1 is formed, and then the inductor main body 1 is sleeved on the insulating column 5, and is carried out by the insulating plate 4, and then the elastic sheet 6 is used for The inside of the inductor main body 1 is abutted to form a limit fixation, so that the inductor main body 1 can be stably installed in the shielding cover 2, and the shielding cover 2 is used for shielding protection, which can effectively avoid the influence of the magnetic field generated by the inductor main body 1 during operation Other circuits and components work normally.

At the same time, the shielding cover 2 can be firmly fixed by using the cooperation of the fixing holes 20101 and bolts and other components, that is, the inductor main body 1 can be firmly fixed, and the overall mechanical strength of the device can be enhanced.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any person familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solution of the present invention Any equivalent replacement or change of the inventive concepts thereof shall fall within the protection scope of the present invention.

Claims (10)

1. A high-current annular vertically wound inductor, comprising an inductor body (1) and a shield (2), characterized in that the inductor body (1) includes an iron core (101) and a vertically wound coil (102 ), the vertically wound coil (102) is a plurality of coils formed by vertically winding flat wires around the circular iron core (101) to form a plurality of windings, and the outer edge surface of the iron core (101) An annular cooling groove (103) is opened on the top; The shielding cover (2) includes a base (201) and a metal cover (202), the metal cover (202) is fixed on the upper end surface of the base (201), and is used for the inductor main body (1) to be placed , and the metal cover (202) is filled with cooling oil, the top of the metal cover (202) is provided with an opening, and a metal sealing cover (203) is installed, and the bottom of the metal sealing cover (203) The end face is provided with an insulation mechanism for fixing the inductor main body (1). 2 . The high-current annular vertically wound inductor according to claim 1 , wherein the iron core ( 101 ) is a ring structure formed by splicing two semi-annular magnetic blocks. 3 . 3. A high-current annular vertically wound inductor according to claim 2, characterized in that the heat dissipation groove (103) is an annular groove body formed by butting two semi-circular groove bodies, and the heat dissipation groove ( The two semi-annular grooves of 103) are respectively opened on the surface of the two semi-annular magnetic blocks of the iron core (101). 4. A high-current annular vertical wound inductor according to claim 1, characterized in that, the base (201) is provided with a plurality of fixing holes (20101), and the fixing holes (20101) are located at the The position of the edge of the base (201) is described. 5. A high-current annular vertical wound inductor according to claim 1, characterized in that the insulation mechanism provided on the lower end surface of the metal sealing cover (203) includes an insulation plate (4) and an insulation column (5), The insulating plate (4) is placed on the inner bottom surface of the inductor main body (1), and the insulating column (5) is fixed in the middle of the upper end surface of the insulating plate (4). 6. A high-current annular vertical wound inductor according to claim 5, characterized in that, the top of the insulating column (5) is provided with a threaded socket (501), and the metal sealing cover (203) A threaded column (20302) is formed in the middle of the lower end surface of the body, and the threaded column (20302) is screwed into the threaded socket (501) to form a fixation. 7. A high-current toroidal vertical wound inductor according to claim 5, characterized in that the inductor body (1) surrounds the insulating post (5) and is placed on the insulating plate (4) and a plurality of elastic pieces (6) are symmetrically fixed in the middle of the insulating column (5), and the elastic pieces (6) elastically abut against the inner side of the inductor main body (1). 8. A winding method for a high-current annular vertically wound inductor, which is suitable for a high-current annular vertically wound inductor according to any one of claims 1-6, characterized in that it comprises the following steps: S1. Open a ring-shaped cooling groove on the surface of the ring-shaped magnetic core; S2, cutting the annular magnetic core in the above S1 into two semi-annular magnetic blocks; S3, vertically wind the flat wire into a square vertically wound coil (102); S4. Insert the two semi-annular magnetic blocks in S2 into the square vertical winding coil (102) in S3; S5, connecting the other ends of the two semi-annular magnetic blocks to form an annular magnetic core; S6, bonding the butt joint gap on the annular magnetic core in S5 above. 9. The winding method of a high-current annular vertically wound inductor according to claim 8, characterized in that in said S3, there are multiple square vertically wound coils (102) formed by vertically winding flat wires, And a plurality of square vertically wound coils (102) are connected end to end to form a spring-like structure. 10. The winding method of a high-current annular vertically wound inductor according to claim 9, characterized in that in said S4, the two magnetic blocks cut into semi-circular shapes are respectively formed from a plurality of end-to-end connected square The two ends of the whole formed by the vertical winding coil (102) are inserted until one end of the two semi-annular magnetic blocks is inserted into the square vertical winding coil (102) and connected, and the other ends of the two semi-annular magnetic blocks are respectively located in the continuous The positions of the two ends of the square vertical winding coil (102) are to be bonded.

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