Reconfigurable small spliced inductor

Abstract

A reconfigurable small spliced inductor comprises a first semi-ring magnetic core, a second semi-ring magnetic core, a first buckle ring, a winding coil and a second buckle ring. According to the utility model, the switching of two forms of the magnetic core realizes the integrated winding and automatic splicing of the spliced inductor. Meanwhile, due to the fact that the number of coils wound in the magnetic core is increased, the inductance value is increased sharply, miniaturization of the inductor is achieved, and the reconfigurable small spliced inductor can meet the design requirement of a small power electronic system and can be applied to power electronic equipment such as a switching power supply, an inverter, a relay and a DC-DC converter.

Description

Technical Field

[0001] This utility model relates to a small modular inductor, and more particularly to a reconfigurable small modular inductor. It belongs to the field of inductor technology. Background Technology

[0002] Inductors are commonly used in power electronic circuits. The two-half-toroidal core composite inductor is a common inductor structure design, typically used in high-frequency transformers, power inductors, or filter inductors. The core idea is to mechanically join or bond two half-toroidal cores (such as EE type, EF type, or a toroidal core cut in half) to form a complete closed magnetic circuit, thus constructing the inductor. Due to the air gap at the joint, this gap increases magnetic reluctance, decreases inductance, and increases core loss. Currently, high-frequency losses can be reduced by filling the air gap with impregnating adhesive, while epoxy resin bonding with mixed magnetic powder cores increases mechanical stability. Regarding core materials, selection depends on the application. Ferrite is generally used for high-frequency, low-loss applications, while alloy powder cores (iron-silicon-aluminum, iron-nickel-molybdenum) are typically used for broadband applications, and nanocrystalline cores are used for high-frequency, high-permeability applications. Currently, the main factors affecting the large-scale mass production of half-toroidal cores are product consistency and cost control, primarily caused by semi-automatic winding and manual assembly. Therefore, designing a small, modular inductor with high product consistency and low cost is a huge challenge. Utility Model Content

[0003] The technical problem to be solved by this utility model is to address the issues in the semi-automatic winding and manual assembly of semi-ring spliced ​​inductors in the prior art, by providing a reconfigurable small spliced ​​inductor to achieve integrated winding and automatic assembly of spliced ​​inductors.

[0004] The technical solution adopted by this utility model to solve its technical problem is to construct a reconfigurable small splicing inductor, including: a first half-ring magnetic core, a second half-ring magnetic core, a first snap ring, a winding coil, and a second snap ring; the winding coil is wound on the first half-ring magnetic core and the second half-ring magnetic core; the connection positions at both ends of the first half-ring magnetic core are designed to protrude outwards, and at least one end is provided with a groove; the connection positions at both ends of the second half-ring magnetic core are designed to protrude outwards, and at least one end is provided with a protrusion; the protrusion is inserted into the groove, and the first snap ring snaps the first end of the first half-ring magnetic core and the first end of the second half-ring magnetic core to form an S-shaped magnetic core, or the first snap ring and the second snap ring snap the two ends of the first half-ring magnetic core and the second half-ring magnetic core respectively to form a circular ring magnetic core.

[0005] In the reconfigurable miniature splicing inductor described in this utility model, the groove is a cylindrical groove and the protrusion is a cylindrical protrusion.

[0006] In the reconfigurable miniature splicing inductor described in this utility model, an epoxy resin adhesive layer containing mixed magnetic powder is disposed between the cylindrical groove and the cylindrical protrusion.

[0007] The technical solution adopted by this utility model to solve its technical problem is to construct a reconfigurable small splicing inductor, including: a first half-ring magnetic core, a second half-ring magnetic core, a snap ring, and a winding coil; the winding coil is wound on the first half-ring magnetic core and the second half-ring magnetic core; the connection positions at both ends of the first half-ring magnetic core are designed to protrude outwards, and the first end is provided with a groove; the connection positions at both ends of the second half-ring magnetic core are designed to protrude outwards, and the first end is provided with a protrusion, the protrusion fitting the groove; the snap ring snaps the first end of the first half-ring magnetic core with the groove and the first end of the second half-ring magnetic core with the protrusion to form an S-shaped magnetic core; an epoxy resin adhesive layer mixed with magnetic powder is disposed between the groove and the protrusion.

[0008] Another technical solution adopted by this utility model to solve its technical problem is to construct a reconfigurable small splicing inductor, including: a first half-ring magnetic core, a second half-ring magnetic core, a first snap-fit ​​ring, a wound coil, and a second snap-fit ​​ring; the wound coil is wound on the first half-ring magnetic core and the second half-ring magnetic core; the connection positions at both ends of the first half-ring magnetic core are designed to protrude outwards, and the first end is provided with a groove; the connection positions at both ends of the second half-ring magnetic core are designed to protrude outwards, and the first end is provided with a protrusion; the first snap-fit ​​ring snaps onto the first end of the first half-ring magnetic core and the first end of the second half-ring magnetic core; the second snap-fit ​​ring snaps onto the second end of the first half-ring magnetic core and the second end of the second half-ring magnetic core to form a circular ring magnetic core; an epoxy resin adhesive layer mixed with magnetic powder is disposed between the groove and the protrusion.

[0009] Another technical solution adopted by this utility model to solve its technical problem is to construct a reconfigurable small splicing inductor, including: a first half-ring magnetic core, a second half-ring magnetic core, a first snap-fit ​​ring, a wound coil, and a second snap-fit ​​ring; the wound coil is wound on the first half-ring magnetic core and the second half-ring magnetic core; the connection positions at both ends of the first half-ring magnetic core are designed to protrude outwards, and the first end has a groove or a protrusion; the connection positions at both ends of the second half-ring magnetic core are designed to protrude outwards, and the first end has a protrusion or a groove; the first snap-fit ​​ring snaps onto the first end of the first half-ring magnetic core and the first end of the second half-ring magnetic core; the second snap-fit ​​ring snaps onto the second end of the first half-ring magnetic core and the second end of the second half-ring magnetic core to form a circular ring magnetic core; an epoxy resin adhesive layer mixed with magnetic powder is disposed between the groove and the protrusion.

[0010] In the reconfigurable miniature splicing inductor described in this utility model, the groove is a cylindrical groove and the protrusion is a cylindrical protrusion; an epoxy resin adhesive layer of the mixed magnetic powder is disposed between the cylindrical groove and the cylindrical protrusion.

[0011] In the reconfigurable miniature splicing inductor described in this utility model, the S-shaped magnetic core is a type of winding mechanism with integrated winding function. The winding machine rotates the S-shaped magnetic core 180 degrees around the connection point of the magnetic core, and then continues to spirally wind the second half-ring magnetic core. After the winding is completed, the wound first half-ring magnetic core is rotated, and the beginning and end of the S-shaped magnetic core coated with epoxy resin mixed with magnetic powder are clamped by the second snap ring, which can automatically assemble into a circular ring inductor shape. Compared with traditional inductors, this inductor has more winding coils and can achieve a larger inductance in the same size. At the same time, compared with traditional half-ring splicing inductors, this inductor has the advantages of integrated winding and automatic assembly.

[0012] In the reconfigurable miniature splicing inductor described in this invention, the reconfigurability of the splicing inductor is achieved by switching between two types of magnetic cores, enabling integrated winding and automatic splicing of the splicing inductor. Simultaneously, the increased number of coils within the magnetic core leads to a surge in inductance, thereby achieving miniaturization of the inductor. In summary, this reconfigurable miniature splicing inductor can meet the design requirements of small power electronic systems and can be applied to power electronic devices such as switching power supplies, inverters, relays, and DC-DC converters. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0014] Figure 1 This is a top view of the two-part semi-toroidal core proposed according to this utility model;

[0015] Figure 2 This is a top view of the single-core assembly proposed according to this utility model;

[0016] Figure 3 This is a top view of the S-shaped spliced ​​inductor after winding according to the present invention;

[0017] Figure 4 This is a top view of the small annular spliced ​​inductor proposed according to this utility model. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] The implementation method of this utility model to achieve reconfigurable small splicing inductors is briefly described as follows.

[0020] Figure 1 This is a top view of the two-part semi-ring magnetic core proposed in this utility model. The right side of the two-part semi-ring magnetic core is designed as a single-hole protrusion and groove structure. At the same time, the connection position of the two semi-ring magnetic cores is designed to protrude outward, so that they can be easily locked with a snap ring when closed. Figure 2 Based on the top view of the single-core assembly proposed in this utility model, Figure 1 After the upper half-ring magnetic core is horizontally symmetrically 180 degrees, the lower half-ring magnetic core protrusion and connecting surface are coated with epoxy resin adhesive mixed with magnetic powder core, and then inserted into the groove of the upper half-ring magnetic core. At the same time, the connecting protrusion of the two half-rings is locked with the first buckle ring, and the entire single-piece magnetic core is S-shaped. Figure 3 The diagram shows a top view of the S-shaped spliced ​​inductor after winding, according to the present invention. In the diagram, a dot inside a small circle represents the winding passing through the paper outwards, and a cross inside a small circle represents the winding passing through the paper inwards. The S-shaped magnetic core is wound, and the winding machine fixes the connection point of the S-shaped magnetic core. When the spiral winding of the first half-ring magnetic core is completed, the winding machine rotates the S-shaped magnetic core 180 degrees around the vertical connection axis of the magnetic core. Then the winding machine continues to spirally wind the second half-ring magnetic core. Figure 4 This is a top view of the closed miniature spliced ​​inductor proposed according to this utility model. After the S-shaped magnetic core is wound, epoxy resin mixed with magnetic powder is applied to the connecting surfaces of the first and last ends of the S-shaped magnetic core. The first half-ring magnetic core after winding is rotated 180 degrees along the axis of the first locking ring, and the connecting surface protrusion of the two half-rings is locked with the second locking ring. At this time, the entire circular miniature spliced ​​inductor is manufactured.

[0021] The present invention will be further described below with reference to specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] To clearly describe this utility model, Figure 4 A top view of a closed, miniature modular inductor according to this utility model shows a reconfigurable miniature modular inductor comprising: a first half-ring magnetic core 1, a second half-ring magnetic core 2, a first locking ring 3, a wound coil 4, and a second locking ring 5. For example... Figure 1 As shown, the connection points at both ends of the first semi-ring core 1 are designed to protrude outwards, and one end has a cylindrical groove. Similarly, the connection points at both ends of the second semi-ring core 2 are designed to protrude outwards, and one end has a cylindrical protrusion that fits into the cylindrical groove of the first semi-ring core 1. Figure 2 As shown, Figure 1After the first half-ring magnetic core 1 is horizontally symmetrically 180 degrees, the right protrusion and connecting surface of the second half-ring magnetic core 2 are coated with epoxy resin adhesive of mixed magnetic powder core, and then inserted into the right groove of the first half-ring magnetic core 1. At the same time, the connecting protrusion of the two half-rings is locked with the first snap ring 3. The entire S-shaped single-piece magnetic core assembled from the first half-ring magnetic core 1 and the second half-ring magnetic core 2 is ready to be wound by the winding machine.

[0023] Furthermore, the winding machine fixes the connection point of the S-shaped magnetic core assembled from the first half-ring magnetic core 1 and the second half-ring magnetic core 2. The winding machine first spirally winds the first half-ring magnetic core 1. After completion, the winding machine rotates the S-shaped magnetic core 1 180 degrees around the vertical connecting axis of the magnetic core. Then, the winding machine continues to spirally wind the second half-ring magnetic core 2. The top view of the S-shaped spliced ​​inductor after the integrated winding is completed is shown below. Figure 3 As shown.

[0024] Furthermore, once the S-shaped magnetic core is wound, the epoxy resin adhesive of the mixed magnetic powder core is applied to the connecting surfaces of the first and last ends of the S-shaped magnetic core. The first half-ring magnetic core 1 after winding is rotated 180 degrees along the axis of the first snap ring 3, and the connecting surface protrusion of the two half-rings is locked with the second snap ring 5. The entire circular small spliced ​​inductor is then manufactured.

[0025] In a preferred embodiment of this invention, cylindrical protrusions can be provided at one or both ends of the first semi-ring core 1, and cylindrical grooves can be provided at one or both ends of the second semi-ring core 2; alternatively, cylindrical grooves can be provided at one or both ends of the first semi-ring core 1, and cylindrical protrusions can be provided at one or both ends of the second semi-ring core 2; alternatively, a cylindrical groove can be provided at one end of the first semi-ring core 1, and a cylindrical protrusion at the other end, correspondingly, a cylindrical protrusion can be provided at one end of the second semi-ring core 2, and a cylindrical groove at the other end. Of course, other shapes of protrusions and grooves can also be used, such as square ones.

[0026] The reconfigurable miniature splicing inductor described in this invention solves the problems of semi-automatic winding and manual assembly of semi-ring splicing inductors in the prior art, realizing integrated winding and automatic assembly of splicing inductors. This inductor can meet the design requirements of power electronic circuit systems and can be applied to power electronic circuit systems such as switching power supplies, inverters, relays and DC-DC converters, and is worth promoting.

[0027] This utility model includes, but is not limited to, the embodiments given above. Those skilled in the art can make different modifications and substitutions based on the concept of this utility model without departing from its principles. For example, the circular magnetic core can be changed to a square core, or other metals can be used for processing. These modifications and substitutions also fall within the scope of protection of this patent.

[0028] Although this utility model has been described through specific embodiments, those skilled in the art should understand that various modifications and equivalent substitutions can be made to this utility model without departing from its scope. Furthermore, various modifications can be made to this utility model for specific situations or materials without departing from its scope. Therefore, this utility model is not limited to the specific embodiments disclosed, but should include all embodiments falling within the scope of the claims of this utility model.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A reconfigurable small size tiled inductor, characterized in that, include: A first semi-ring magnetic core, a second semi-ring magnetic core, a first locking ring, a winding coil, and a second locking ring; the winding coil is wound around the first semi-ring magnetic core and the second semi-ring magnetic core; the connection positions at both ends of the first semi-ring magnetic core are designed to protrude outwards, and the first end is provided with a groove; the connection positions at both ends of the second semi-ring magnetic core are designed to protrude outwards, and the first end is provided with a protruding post; the protruding post is inserted into the groove, and the first locking ring locks the first end of the first semi-ring magnetic core and the first end of the second semi-ring magnetic core to form an S-shaped magnetic core, or the first locking ring and the second locking ring lock the two ends of the first semi-ring magnetic core and the second semi-ring magnetic core respectively to form a circular ring magnetic core.

2. The reconfigurable small-size tiled inductor of claim 1, wherein, The groove is a cylindrical groove, and the protrusion is a cylindrical protrusion.

3. The reconfigurable small-size tiled inductor of claim 2, wherein, An epoxy resin adhesive layer containing mixed magnetic powder is disposed between the cylindrical groove and the cylindrical protrusion.

4. A reconfigurable miniature splicing inductor, characterized in that, include: A first semi-ring magnetic core, a second semi-ring magnetic core, a snap ring, and a winding coil; the winding coil is wound around the first and second semi-ring magnetic cores; both ends of the first semi-ring magnetic core are designed to protrude outwards, and the first end has a groove; both ends of the second semi-ring magnetic core are designed to protrude outwards, and the first end has a protrusion, the protrusion fitting the groove; the snap ring snaps onto the first end of the first semi-ring magnetic core with the groove and the first end of the second semi-ring magnetic core with the protrusion to form an S-shaped magnetic core; an epoxy resin adhesive layer of mixed magnetic powder is disposed between the groove and the protrusion.

5. A reconfigurable small size tiled inductor, characterized in that, include: A first semi-ring magnetic core, a second semi-ring magnetic core, a first locking ring, a winding coil, and a second locking ring; the winding coil is wound around the first semi-ring magnetic core and the second semi-ring magnetic core; the connection positions at both ends of the first semi-ring magnetic core are designed to protrude outwards, and the first end has a groove; the connection positions at both ends of the second semi-ring magnetic core are designed to protrude outwards, and the first end has a protruding post; the first locking ring locks the first end of the first semi-ring magnetic core and the first end of the second semi-ring magnetic core; the second locking ring locks the second end of the first semi-ring magnetic core and the second end of the second semi-ring magnetic core to form a circular ring magnetic core; an epoxy resin adhesive layer mixed with magnetic powder is disposed between the groove and the protruding post.

6. A reconfigurable small size tiled inductor, characterized in that, include: A first semi-ring magnetic core, a second semi-ring magnetic core, a first locking ring, a winding coil, and a second locking ring; the winding coil is wound around the first semi-ring magnetic core and the second semi-ring magnetic core; the connection positions at both ends of the first semi-ring magnetic core are designed to protrude outwards, and the first end has a groove or a protrusion; the connection positions at both ends of the second semi-ring magnetic core are designed to protrude outwards, and the first end has a protrusion or a groove; the first locking ring locks the first end of the first semi-ring magnetic core and the first end of the second semi-ring magnetic core; the second locking ring locks the second end of the first semi-ring magnetic core and the second end of the second semi-ring magnetic core to form a circular ring magnetic core; an epoxy resin adhesive layer mixed with magnetic powder is disposed between the groove and the protrusion.

7. A reconfigurable small size tiled inductor according to any of claims 4-6, wherein, The groove is a cylindrical groove, and the protrusion is a cylindrical protrusion; an epoxy resin adhesive layer of the mixed magnetic powder is disposed between the cylindrical groove and the cylindrical protrusion.

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