Series and parallel magnetic integrated inductor
Through the design of series and parallel magnetic integrated inductors, the problems of high core loss and difficult to reduce costs in traditional high-power inductors are solved, and low-cost and efficient core loss optimization and current resistance are achieved.
Patent Information
- Application Number
- CN202421632613.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-11
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-07-11
AI Technical Summary
In traditional high-power inductors, the laminated material increases the core loss after setting the air gap, is difficult to reduce the cost and is difficult to overcome the noise. The independent inductor solution is high in cost and the core flux loss is large.
The magnetic integrated inductor design is adopted, and the magnetic core is wound with a back-shaped strip, leaving a gap in the middle to avoid cut-out processing and air gaps. The core structure shares the back-shaped core to form a magnetic flux circuit.
Reduces core loss and cost, improves the current resistance of inductor devices, simplifies the manufacturing process, and reduces noise interference.
Smart Images
Figure CN223193612U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an inductor. Background Art
[0002] In high-power inductors, traditional laminated materials such as amorphous nanocrystalline ribbon or silicon steel sheet are widely used due to their high magnetic permeability and high saturation magnetic induction. To ensure the required inductance at high currents, these materials inevitably require an air gap between the laminated materials. This is typically the case in common amorphous UU-type inductors or three-phase, three-leg, or three-phase, five-leg silicon steel inductors. This presents several challenges: 1. Because the magnetic permeability of laminated materials is much greater than that of air, magnetic flux enters and exits the core perpendicularly, generating significant eddy current losses in the plane of the laminate. Therefore, air gapping the laminated core significantly increases core loss. When gapping materials such as amorphous nanocrystalline, actual core loss can far exceed theoretical values. 2. During the cutting process, laminated materials can face issues such as interlayer delamination and interlaminar adhesion caused by fragmentation, which must be addressed, preventing cost reductions. 3. The cuts disrupt the integrity of the laminated core, generating additional noise that is often difficult to mitigate.
[0003] High-power power supply designs, such as multi-channel parallel high-power boost circuits and three-phase AC inverter circuits, require high-power inductors to function. Currently, most solutions for these applications use a separate inductor for each channel, resulting in high cost and significant core flux losses. Using an integrated inductor solution not only reduces cost but also allows the core flux shared by the inductors to cancel each other out, reducing core losses. Utility Model Content
[0004] In order to reduce costs, noise caused by cuts in laminated materials, and device losses, the present invention provides a series-parallel magnetic integrated inductor. The technical solution of the series-connected magnetic integrated inductor of the present invention is as follows: there are several basic structure assemblies, each assembly having a center column, two protective shells, two circular magnetic cores, and two strip magnetic cores. The center column is composed of a center column magnetic core and a winding structure. A protective shell is respectively installed and fixed at both ends of the center column so that the center column magnetic core passes through the mounting hole of the protective shell. The circular magnetic core is installed on one end of the protective shell and on the other side opposite to the winding structure, so that the circular magnetic core contacts the center column magnetic core and the strip magnetic core. The several basic structure assemblies are sequentially connected end to end along the axis of the center column. Adjacent basic structure assemblies share a circular magnetic core to form a magnetic flux loop. The circular magnetic core is wound with a circular strip, and a gap is left in the middle of the core structure to facilitate strip winding.
[0005] The technical solution of the parallel magnetic integrated inductor of the present invention is as follows: there are several center columns, two protective shells and two circular magnetic cores; the center column 1 is composed of a center column magnetic core 11 and a winding structure 12, the several center columns are assembled in parallel parallel to the axis direction of the center column, and the two ends of the several center columns share a protective shell and a circular magnetic core respectively, and the circular magnetic cores are in contact with the several center column magnetic cores at the same time to form a magnetic flux loop.
[0006] The beneficial effects of the present invention are as follows: the present invention adopts the U-shaped strip to wind the laminations, thereby avoiding the need for cutting the lamination materials and opening air gaps in the lamination materials; a gap is left in the middle of the U-shaped strip to facilitate the winding of the strip; and the manufactured inductor device can withstand a large current, is simple to manufacture and has a low cost; a mixed material design is adopted, and there is no air gap in the lamination materials, so the core loss can be optimized; the integrated magnetic circuit design reduces the cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Figure 1 This is a schematic structural diagram of the basic structure assembly of the series magnetic integrated inductor of the utility model;
[0008] Figure 2 This is a schematic diagram of the structure of the coil-series magnetic integrated inductor of the utility model;
[0009] Figure 3 、 4 5 is a schematic structural diagram of the parallel magnetic integrated inductor of the present invention.
[0010] In the figure,
[0011] 1: Center column
[0012] 11: Middle column core
[0013] 12: Winding structure
[0014] 13: Axis direction of the center column
[0015] 2: Shell
[0016] 21: Mounting hole
[0017] 3: Loop core
[0018] 31: Gap
[0019] 4: Strip core DETAILED DESCRIPTION
[0020] like Figure 1As shown, the series magnetic integrated inductor of the present invention has several basic structure assemblies, which have a middle column 1, two protective shells 2, two circular magnetic cores 3 and two bar magnetic cores 4. The middle column 1 is composed of a middle column magnetic core 11 and a winding structure 12; a protective shell 2 is respectively installed and fixed at both ends of the middle column 1 so that the middle column magnetic core 11 passes through the mounting hole 21 of the protective shell, and the circular magnetic core 3 is installed on one end of the protective shell 2 and on the other side opposite to the winding structure 12, so that the circular magnetic core 3 is in contact with the middle column magnetic core 11 and the bar magnetic core 4; the several basic structure assemblies are connected in series end to end along the axial direction 13 of the middle column, and adjacent basic structure assemblies share a circular magnetic core 3 to form a magnetic flux loop; the circular magnetic core adopts a circular strip to wind the magnetic core, and a gap 31 is left in the middle of the magnetic core structure to facilitate strip winding.
[0021] In such Figure 2 In the first embodiment shown, the present invention has three basic structure assemblies, which are sequentially connected end to end along the axis direction 13 of the center column, and adjacent basic structure assemblies share a circular magnetic core 3 to form a magnetic flux loop.
[0022] like Figure 3 In the second embodiment shown, the parallel magnetic integrated inductor of the present invention has three of the above-mentioned center columns 1, two of the above-mentioned protective shells 2 and two of the above-mentioned circular cores 3; the center column (1) is composed of a center column core 11 and a winding structure 12, and the three center columns 1 are assembled in parallel parallel to the axis direction 13 of the center column. The two ends of the three center columns 1 share a protective shell 2 and a circular core 3 respectively, and the circular core 3 is in contact with the three center column cores 11 at the same time to form a magnetic flux loop.
[0023] like Figure 4 In the third embodiment shown, a strip-shaped magnetic core 4 is provided between the parallel-assembled center columns 1 of the second embodiment.
[0024] like Figure 5 In the fourth embodiment shown, strip-shaped magnetic cores 4 are provided on both sides of the parallel-assembled center columns 1 of the third embodiment.
[0025] In the above embodiment, the circular magnetic core is wound with a circular strip of material, and a strip of magnetic material is used for winding. A gap is left in the middle of the core structure to facilitate the winding of the strip.
[0026] In actual application, the basic structure assembly in Example 1 or the center columns in Examples 2, 3, and 4 can be set to any number as needed.
[0027] The above-mentioned specific implementation methods are merely exemplary and are intended to better enable those skilled in the art to understand this patent. They should not be understood as limiting the scope of this patent. Any changes or modifications that are essentially the same or equivalent to the technical content of the technical solution disclosed in this patent fall within the scope of this patent.
Claims
1. A series magnetic integrated inductor, characterized in that: There are a plurality of basic structure assemblies, which have a central column (1), two protective shells (2), two circular magnetic cores (3) and two strip magnetic cores (4), wherein the central column (1) is composed of a central column magnetic core (11) and a winding structure (12); a protective shell (2) is respectively installed and fixed at both ends of the central column (1) so that the central column magnetic core (11) passes through the mounting hole (21) of the protective shell; the circular magnetic core (3) is installed on one end of the protective shell (2) and on the other side opposite to the winding structure (12), so that the circular magnetic core (3) contacts the central column magnetic core (11) and the strip magnetic core (4); the plurality of basic structure assemblies are sequentially connected end to end along the axis direction (13) of the central column, and adjacent basic structure assemblies share a circular magnetic core (3) to form a magnetic flux loop; the circular magnetic core (3) is wound with a circular strip, and a gap (31) is left in the middle of the core structure to facilitate strip winding.
2. A parallel magnetic integrated inductor, characterized in that: There are a plurality of center columns (1), two protective shells (2) and two circular magnetic cores (3); the center column (1) is composed of a center column magnetic core (11) and a winding structure (12); the plurality of center columns (1) are assembled in parallel and parallel to the axis direction (13) of the center column; the two ends of the plurality of center columns (1) respectively share a protective shell (2) and a circular magnetic core (3); the circular magnetic core (3) is in contact with the plurality of center column magnetic cores (11) at the same time to form a magnetic flux loop.
3. The parallel magnetic integrated inductor according to claim 2, wherein: A bar-shaped magnetic core (4) is arranged between a plurality of middle columns (1) assembled in parallel.
4. The parallel magnetic integrated inductor according to claim 3, wherein: A bar-shaped magnetic core (4) is respectively arranged on both sides of a plurality of middle columns (1) assembled in parallel.