Vehicle-mounted magnetic shielding multi-tap reactor

Abstract

The vehicle-mounted magnetic shielding multi-tap reactor is characterized in that a supporting seat and a magnetic shielding multi-tap iron core are sequentially arranged at the upper end of a metal bottom plate, and a plurality of groups of vertical columns at the upper end of the metal bottom plate sequentially penetrate through the supporting seat and the magnetic shielding multi-tap iron core and then are locked and fixed through nuts; the magnetic shielding multi-tap iron core comprises a multi-tap iron core body and a magnetic shielding cylinder covering the outer side of the multi-tap iron core body, and a coil on the multi-tap iron core body is formed by winding a plurality of transposition stranded wires; and the outer sides of the supporting seat and the magnetic shielding multi-tap iron core are sleeved with an epoxy cylinder. According to the utility model, the magnetic shielding cylinder and the epoxy cylinder respectively have shielding and protection effects, so that the problem that the vehicle cannot be mounted due to eddy-current loss caused by magnetic leakage of the original coil and the iron core is solved; the coil on the multi-tap iron core body is formed by winding a plurality of transposition stranded wires, so that the skin effect generated by large current is greatly reduced, and the Q value of the reactor is multiplied.

Description

Technical Field

[0001] The utility model relates to the technical field of reactors, in particular to a vehicle-mounted magnetic shielding multi-tap reactor. Background Art

[0002] Reactors, also called inductors, are widely used in circuits. Because of the effect of electromagnetic induction in circuits, there is a certain inductance, which can prevent current changes. The eddy current loss caused by the leakage of the coil and core in the reactor makes the reactor unable to be used on-board. The skin effect produced by the large current passing through the coil means that the current will be concentrated on the surface of the coil. Due to the skin effect, the current is limited to a part of the cross-section of the coil, which not only reduces the effective use area of ​​the coil wire, but also increases the equivalent resistance and reduces the quality factor of the reactor. For this reason, we have launched a vehicle-mounted magnetically shielded multi-tap reactor. Utility Model Content

[0003] The utility model aims to provide a vehicle-mounted magnetic shielding multi-tap reactor to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a vehicle-mounted magnetic shielding multi-tap reactor, comprising a metal bottom plate, the upper end of which is provided with a support seat and a magnetic shielding multi-tap iron core in sequence, and a plurality of groups of vertical columns on the upper end of the metal bottom plate pass through the support seat and the magnetic shielding multi-tap iron core in sequence and are then locked and fixed by nuts;

[0005] The magnetic shielding multi-tap iron core comprises a multi-tap iron core body and a magnetic shielding cylinder covered on the outside of the multi-tap iron core body, and the coil on the multi-tap iron core body is wound with a plurality of transposed stranded wires;

[0006] The outer sides of the support seat and the magnetic shielding multi-tap iron core are sleeved with an epoxy cylinder, the bottom of which is fixed to the metal bottom plate by several groups of screws, and the upper end of the epoxy cylinder is fixed with a top cover by several groups of screws.

[0007] Compared with the prior art, the utility model has the following beneficial effects: the utility model is composed of a magnetic shielding multi-tap iron core, a metal bottom plate, a support seat and an insulating epoxy cylinder, the magnetic shielding cylinder and the epoxy cylinder have shielding and protection functions respectively, and solves the problem that the eddy current loss caused by the leakage of the original coil and the iron core cannot be carried on the vehicle;

[0008] A plurality of groups of vertical columns on the upper end of the metal bottom plate sequentially penetrate the support seat and the magnetic shielding multi-tap iron core and are then locked and fixed by nuts, so that the installation of the magnetic shielding multi-tap iron core is firm and stable;

[0009] The magnetically shielded multi-tap iron core includes a multi-tap iron core body and a magnetic shielding tube covering the outside of the multi-tap iron core body. The coil on the multi-tap iron core body is wound with multiple transposed stranded wires, which greatly reduces the skin effect caused by large current and doubles the Q (quality factor) value of the reactor. Generally, the Q value reaches about 200-250 (when the frequency is 30Hz, the Q value can reach 350-450 when the frequency is 35-45Hz). BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the first three-dimensional structure of the overall assembly of the utility model;

[0011] Figure 2 A second three-dimensional structural schematic diagram of the overall assembly of the utility model;

[0012] Figure 3 It is a schematic diagram of the exploded structure of the utility model after the metal bottom plate, the support seat and the magnetic shielding multi-tap iron core are assembled with the epoxy cylinder;

[0013] Figure 4 It is a schematic diagram of the three-dimensional structure of the utility model after overall assembly;

[0014] Figure 5 It is a three-dimensional structural schematic diagram of the support seat of the utility model;

[0015] Figure 6 It is a top view structural diagram of the support block distribution of the utility model;

[0016] Figure 7 It is a schematic diagram of the three-dimensional structure of the magnetically shielded multi-tap iron core of the utility model.

[0017] In the figure: 1. base frame; 2. metal base plate; 3. vertical column; 4. support seat; 41. support plate; 42. support block; 5. magnetic shielding multi-tap iron core; 51. magnetic shielding cover; 52. magnetic shielding tube; 6. nut; 7. epoxy tube; 8. lower flange; 9. upper flange; 10. top cover. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-7The utility model provides a technical solution: a vehicle-mounted magnetic shielding multi-tap reactor, comprising a metal bottom plate 2, a base frame 1 is provided at the lower end of the metal bottom plate 2, and a plurality of partition grooves are provided at the bottom of the base frame 1.

[0020] The upper end of the metal bottom plate 2 is provided with a support seat 4 and a magnetic shielding multi-tap iron core 5 in sequence, and a plurality of groups of vertical columns 3 on the upper end of the metal bottom plate 2 pass through the support seat 4 and the magnetic shielding multi-tap iron core 5 in sequence and are then locked and fixed by nuts 6;

[0021] The support seat 4 includes a plurality of stacked support plates 41 and a plurality of support blocks 42 disposed between adjacent support plates 41 , and the support blocks 42 on the same layer are evenly spaced and distributed in a “M” shape.

[0022] The support base 4 and the magnetic shielding multi-tap core 5 are sleeved with an epoxy tube 7 on the outside, the bottom of which is fixed to the metal bottom plate 2 by several groups of screws, and the top end of the epoxy tube 7 is fixed to a top cover 10 by several groups of screws.

[0023] The upper and lower ends of the epoxy cylinder 7 are respectively integrally formed with an upper flange 9 and a lower flange 8 , and the top cover 10 is fixed to the upper end of the upper flange 9 , and the lower flange 8 is fixed to the end of the metal bottom plate 2 .

[0024] Specifically, when in use, the magnetic shielding multi-tap core 5 includes a multi-tap core body and a magnetic shielding tube 52 covered on the outside of the multi-tap core body, and magnetic shielding covers 51 are provided at the upper and lower ends of the magnetic shielding tube 52. After the nut 6 is locked and fixed to the top of the vertical column 3, the magnetic shielding cover 51 presses the magnetic shielding tube 52 to achieve sealing of the upper and lower ends of the magnetic shielding tube 52;

[0025] In this way, the magnetic shielding tube 52 and the magnetic shielding cover 51 can seal and close the multi-tap core body, so that the multi-tap core body is closed and arranged inside the magnetic shielding tube 52, which plays a shielding role for the multi-tap core body and prevents the multi-tap core body from being unable to be carried on the vehicle due to eddy current loss caused by magnetic leakage;

[0026] The vehicle-mounted magnetic shielding multi-tap reactor is composed of a magnetic shielding multi-tap iron core 5, a metal bottom plate 2, a support seat 4 and an insulating epoxy cylinder 7, which solves the problem that the eddy current loss caused by the leakage magnetic field of the coil and the iron core cannot be carried on the vehicle.

[0027] The coil on the multi-tap core body is wound with multiple transposed stranded wires, which greatly reduces the skin effect caused by large currents and doubles the Q (quality factor) value of the reactor. Generally, the Q value reaches about 200-250 (when the frequency is 30Hz, the Q value can reach 350-450 when the frequency is 35-45Hz).

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vehicle-mounted magnetically shielded multi-tap reactor, comprising a metal bottom plate (2), characterized in that: A support seat (4) and a magnetic shielding multi-tap iron core (5) are sequentially provided at the upper end of the metal bottom plate (2); a plurality of groups of vertical columns (3) at the upper end of the metal bottom plate (2) sequentially penetrate the support seat (4) and the magnetic shielding multi-tap iron core (5) and are then locked and fixed by nuts (6); The magnetic shielding multi-tap iron core (5) comprises a multi-tap iron core body and a magnetic shielding cylinder (52) covering the outer side of the multi-tap iron core body, and the coil on the multi-tap iron core body is wound with a plurality of transposed stranded wires; The outer sides of the support seat (4) and the magnetic shielding multi-tap iron core (5) are sleeved with an epoxy tube (7), the bottom of which is fixed to the metal bottom plate (2) by a plurality of sets of screws, and the upper end of the epoxy tube (7) is fixed with a top cover (10) by a plurality of sets of screws.

2. The vehicle-mounted magnetic shielding multi-tap reactor according to claim 1, characterized in that: A base frame (1) is provided at the lower end of the metal bottom plate (2), and a plurality of partition grooves are provided at the bottom of the base frame (1).

3. The vehicle-mounted magnetic shielding multi-tap reactor according to claim 1, characterized in that: The support seat (4) comprises a plurality of groups of support plates (41) stacked up and down and a plurality of groups of support blocks (42) arranged between adjacent support plates (41), and the plurality of groups of support blocks (42) on the same layer are evenly spaced and distributed in a "M" shape.

4. The vehicle-mounted magnetic shielding multi-tap reactor according to claim 3, characterized in that: A plurality of groups of vertical columns (3) penetrate the support plate (41) and the corresponding support blocks (42).

5. The vehicle-mounted magnetic shielding multi-tap reactor according to claim 1, characterized in that: The upper and lower ends of the epoxy cylinder (7) are respectively integrally formed with an upper flange (9) and a lower flange (8), and the top cover (10) is fixed to the upper end of the upper flange (9), and the lower flange (8) is fixed to the end of the metal bottom plate (2).

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