Induction device and induction device with feedback winding

Abstract

The utility model provides an inductance device and an inductance device with a feedback winding, which belong to the technical field of inductance, and are composed of a square magnetic core, a magnetic column and a winding, the square magnetic core is formed by vertically connecting two groups of parallel magnetic surfaces, and a support leg is constructed along one end of a connecting intersecting line of adjacent magnetic surfaces; the magnetic column is perpendicular to the magnetic surface and is arranged in a magnetic core cavity defined by the magnetic surface; and the winding is sleeved on the magnetic column. According to the inductance device, under the condition that the magnetic flux density is not reduced, the size of the device is reduced, signal sampling can be carried out, and the inductance value can be adjusted.

Description

TECHNICAL FIELD

[0001] The utility model relates to inductance technical field especially relates to a inductor device can carry out inductance inductance adjustment and have feedback winding. BACKGROUND

[0002] Magnetic element is important component in electrical equipment, inductor device is used for filtering to improve circuit working stability, also is used for energy storage and transmission etc., high saturation magnetic flux density is beneficial to magnetic element miniaturization, adjustable inductance is the key device in impedance matching in high power very low frequency system, magnetic element is usually designed into circular, square or rectangle with small length-width ratio, and the height of the magnetic element designed by this kind of magnetic core structure is usually high. SUMMARY

[0003] The utility model discloses a main purpose lies in solving above -mentioned technical problem.

[0004] According to the utility model, a kind of inductor device, by square magnetic core, magnetic column and winding, the square magnetic core is vertically connected by two groups of parallel magnetic surfaces, and the foot is structured with branch point along the intersection line of adjacent magnetic surface connection;The magnetic column is perpendicular to the magnetic surface and is placed in the magnetic core cavity formed by the magnetic surface surrounding;The winding is set on the magnetic column.

[0005] Preferably, the two groups of parallel magnetic surfaces are correspondingly provided with grooves on the opposite inner sides, and the grooves are matched with the outer diameter of the magnetic column.

[0006] Preferably, the grooves are located on the axis of the magnetic surface.

[0007] Preferably, the length of the magnetic column is matched with the interval of the grooves on the opposite inner sides of the two groups of parallel magnetic surfaces.

[0008] Preferably, a center hole is provided on the magnetic surface, and the center hole is matched with the magnetic column.

[0009] An inductor device with a feedback winding includes the above-mentioned inductor device, and further includes a feedback winding arranged on the magnetic column, and the feedback winding is connected to a signal circuit.

[0010] The utility model discloses a kind of inductor devices, by square magnetic core, magnetic column and winding, square magnetic core is vertically connected by two groups of parallel magnetic surfaces, and the foot is structured with branch point along the intersection line of adjacent magnetic surface connection;Magnetic column is perpendicular to the magnetic surface and is placed in the magnetic core cavity formed by the magnetic surface surrounding;Winding is set on the magnetic column.The inductor device provided in the application reduces the volume of the device without reducing the magnetic flux density, and can also sample signals and adjust inductance. BRIEF DESCRIPTION OF DRAWINGS

[0011] With reference to the drawings, the drawings used in the following embodiments or prior art description will be briefly described, obviously, the drawings are only for the purpose of illustration, not for limiting the protection scope of the present application.

[0012] Figure 1 The structure diagram of the inductor device related to the present application.

[0013] Figure 2 The structure diagram of the magnetic column related to the present application.

[0014] Figure 3 The structure diagram of the winding related to the present application.

[0015] Figure 4 The structure diagram of the square magnetic core of another inductor device related to the present application.

[0016] Figure 5 The structure diagram of the square magnetic core of another inductor device related to the present application.

[0017] Figure 6 The structure diagram of the feedback winding in the inductor device with feedback winding related to the present application.

[0018] Explanation of the reference numerals:

[0019] 11, square magnetic core; 111, magnetic surface; 112, magnetic surface; 113, groove; 114, arrow; 115, center hole;

[0020] 12, magnetic core cavity;

[0021] 13, leg;

[0022] 14, magnetic column; 141, diameter; 142, length;

[0023] 15, winding; 151, through hole;

[0024] 16, feedback winding.

[0025] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the present disclosure clearer, the technical scheme of the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present disclosure.

[0027] The utility model provides a kind of inductor device, as shown in Figures 1-3 It is composed of square magnetic core 11, magnetic column 14 and winding 15. Square magnetic core 11 is constructed by two groups of parallel magnetic surface 111 and magnetic surface 112 vertical connection, and magnetic surface 111 and magnetic surface 112 are of same material, which can be selected from Fe-Si-Al, Fe-Si, ferrite and other materials, and are integrally formed to reduce magnetic loss. Adjacent magnetic surface 111 and 112 are connected at one end along the intersection direction to form a leg 13. This structure provides space and position for winding 15 lead and square magnetic core 11 fixation.

[0028] Two groups of parallel magnetic surface 111 and magnetic surface 112 are connected perpendicularly to form a magnetic core cavity 12. Magnetic column 14 is arranged in the magnetic core cavity 12 in a manner perpendicular or parallel to magnetic surface 111, for example Figure 1 Magnetic column 14 is perpendicular to magnetic surface 111. Magnetic column 14 is a cylindrical magnetic column, which can be of same material as square magnetic core 11 or different material. Magnetic column 14 can also be selected from high permeability silicon steel, amorphous alloy, nano alloy and amorphous nanocrystalline material.

[0029] Magnetic column 14 is selected from high permeability material, which cooperates with square magnetic core 11 to reduce the volume of the device without reducing magnetic flux density.

[0030] Winding 15 is wound by wire, as shown in Figure 3 Flat wire is used to wind winding 15 with through hole 151. The use of flat wire winding can increase current size and obtain higher inductance. Diameter d 141 of magnetic column 14 matches with through hole 151 of winding 15, and length h 142 of magnetic column 14 is equivalent to the vertical distance between parallel magnetic surface 111 or parallel magnetic surface 112 of square magnetic core 11.

[0031] During assembly, the wound winding 15 is sleeved on magnetic column 14, and then magnetic column 14 is fixed in the magnetic core cavity 12 of square magnetic core 11. The lead of winding 15 is connected to a pin or circuit, and square magnetic core 11 is fixed on an integrated circuit board or PCB.

[0032] Figure 4 The square magnetic core structure diagram of the inductor device of another embodiment is disclosed. The difference between the inductor device and the above-mentioned inductor device lies in the square magnetic core, which is described in detail.

[0033] Square magnetic core 11 is constructed by two groups of parallel magnetic surface 111 and magnetic surface 112 vertical connection and forms a magnetic core cavity 12. Adjacent magnetic surface 111 and 112 are connected at one end along the intersection direction to form a leg 13.

[0034] Magnetic column 14 is arranged in the magnetic core cavity 12 in a manner perpendicular or parallel to magnetic surface 111, for exampleFigure 4 To ensure that the magnetic force lines passing through the square magnetic core 11 are balanced, grooves 113 are formed on the mutually parallel magnetic surfaces 111 or 112 facing the inner side surfaces, the grooves 113 on the two magnetic surfaces 111 are mirror-symmetric about the axis of the magnetic surface 111, and the grooves 113 are located on the axis of the magnetic surface 111, and the magnetic column 14 can be inserted into the magnetic core cavity in the direction of the arrow 114 in the figure, which ensures that the magnetic flux passing through the square magnetic core 11 is symmetric about the magnetic column 14 left and right and up and down.

[0035] It should be noted that the length h 142 of the magnetic column 14 is equivalent to the distance between the grooves 113 on the two magnetic surfaces 111.

[0036] Figure 5 The structure diagram of the square magnetic core of another embodiment of the inductor is disclosed. The difference between the inductor and the above-mentioned inductor lies in the square magnetic core, and the square magnetic core will be described in detail.

[0037] The square magnetic core 11 is connected perpendicularly by two groups of parallel magnetic surfaces 111 and 112 to form a magnetic core cavity 12, and a support 13 is formed at one end of the intersection direction of the adjacent magnetic surfaces 111 and 112.

[0038] A center hole 115 is formed at the center position of the magnetic surface 111 or the magnetic surface 112, and the hole diameter of the center hole 115 is matched with the diameter d 141 of the magnetic column 14.

[0039] During assembly, the wound winding 15 is placed in the magnetic core cavity 12, and the magnetic column 14 is inserted into the center hole 115 in the direction of the arrow 114 and passes through the winding 15 to complete the assembly.

[0040] It should be noted that the length h 142 of the magnetic column 14 is equivalent to the distance between the two magnetic surfaces 111 plus the thickness of one magnetic surface.

[0041] The utility model also proposes a kind of inductor with feedback winding, and the difference between the inductor and the above-mentioned inductor lies in that feedback winding 16 is also sleeved on the magnetic column 14, winding 15 and feedback winding 16 are placed in the magnetic core cavity 12, winding 15 is connected corresponding pin, feedback winding 16 is connected signal circuit, for the magnetic flux, inductance or current change of feedback winding 15.

[0042] It should be noted that feedback winding 16 can be applied to the inductor in the above, and the inductance of the inductance can also be adjusted by changing the length of the magnetic column, such as Figure 5 the structure in the above.

Claims

1. An inductive device, consisting of a square core (11), a magnetic column (14) and a winding (15), characterized in that, The square magnetic core (11) is formed by two groups of parallel magnetic surfaces connected perpendicularly, and a foot (13) is arranged at one end of the intersection line formed by the connection of adjacent magnetic surfaces; the magnetic column (14) is perpendicular to the magnetic surface and is placed in the magnetic core cavity (12) formed by the magnetic surface; the winding (15) is sleeved on the magnetic column (14).

2. The inductive device of claim 1, wherein, Corresponding grooves (113) are formed on the opposite inner sides of the two groups of parallel magnetic surfaces, and the grooves (113) are matched with the outer diameter of the magnetic column (14).

3. The inductive device of claim 2, wherein, The grooves (113) are located on the axis of the magnetic surface.

4. The inductive device of claim 3, wherein, The length of the magnetic column (14) is matched with the interval of the grooves on the opposite inner sides of the two groups of parallel magnetic surfaces.

5. The inductive device of claim 1, wherein, A center hole (115) is formed on the magnetic surface, and the center hole (115) is matched with the magnetic column (14).

6. An inductive device with a feedback winding, comprising an inductive device according to any one of claims 1 to 5, characterized in that A feedback winding (16) is further arranged on the magnetic column (14), and the feedback winding (16) is connected with a signal circuit.

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