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CN-224232474-U - High energy storage inductor

CN224232474UCN 224232474 UCN224232474 UCN 224232474UCN-224232474-U

Abstract

The utility model provides a high energy storage inductor which comprises a framework, a coil winding, two groups of magnetic cores, a first insulating layer, a second insulating layer and two insulating plastic covers, wherein the framework comprises an upper baffle plate, a middle post ring and a lower baffle plate, the magnetic cores comprise magnetic columns, an upper magnetic plate, a lower magnetic plate and two magnetic arms, the first insulating layer is wound on the outer side surfaces of the upper magnetic plate, the lower magnetic plate and the two magnetic arms of the two groups of magnetic cores, the second insulating layer is wound on the periphery of the coil winding, the periphery of a wire rod of the coil winding is wrapped with an enameling film, the two insulating plastic covers are oppositely arranged and covered at the periphery opening, and one insulating plastic cover is positioned between the second insulating layer and the magnetic arms on the same side of the two groups of magnetic cores. In the assembly production process of the high energy storage inductor, the coil winding can be prevented from being damaged, the insulation performance can be enhanced, the production quality of a product is improved, the potential safety hazard of the product is prevented, the service life of the product is prolonged, and the high-efficiency, stable and safe operation of the product is further ensured, so that the high energy storage inductor is safer and more reliable.

Inventors

  • CHEN ENZHU

Assignees

  • 万佳（珠海）磁性材料科技有限公司

Dates

Publication Date
20260512
Application Date
20250519

Claims (10)

  1. 1. The utility model provides a high energy storage inductor, includes skeleton, coil winding and two sets of magnetic cores, the skeleton includes upper shield, well post ring and lower baffle, the upper shield with the lower baffle is located respectively the axial both ends of well post ring, well post ring the upper shield with form the open outer loop cavity in periphery down between the baffle, coil winding twines in the outer loop cavity, just coil winding's outlet end wears out upper shield or lower baffle sets up, two the magnetic core is in adjacent side by side in the radial of well post ring sets up, each the magnetic core includes magnet post, upper magnet plate, lower magnet plate and two magnetic arms, the upper magnet plate is located the upper end of upper shield, the lower magnet plate is located the lower extreme of lower baffle, the magnet post is located in the annular hole of well post ring and connect upper magnet plate with down between the magnet plate, two the magnet arm is located respectively the relative outside of outer loop cavity and connect upper magnet plate and down between the magnet plate, its characterized in that: The high energy storage inductor further comprises a first insulating layer, a second insulating layer and two insulating plastic covers, wherein the first insulating layer is wound on the outer side surfaces of the upper magnetic plates, the lower magnetic plates and the two magnetic arms of the two magnetic cores, the second insulating layer is wound on the periphery of the coil winding, and the periphery of a wire rod of the coil winding is wrapped with a paint film; The two insulating plastic covers are oppositely arranged and cover the periphery opening, and one insulating plastic cover is positioned between the second insulating layer and the magnetic arms on the same side of the two magnetic cores.
  2. 2. The high energy storage inductor of claim 1, wherein: Each insulating plastic cover comprises a first cover plate, a second cover plate and a third cover plate which are sequentially connected, wherein the first cover plate is positioned between the upper magnetic plate and the upper end of the upper baffle plate, the second cover plate covers the periphery of the upper magnetic plate, the second cover plate covers the second insulating layer and two magnetic cores, the second cover plate covers the magnetic arms, the third cover plate covers the magnetic cores, and the third cover plate covers the magnetic cores.
  3. 3. The high energy storage inductor of claim 1, wherein: at least two layers of second insulating layers are wound on the periphery of the coil winding; And/or, the second insulating layer is an insulating tape.
  4. 4. The high energy storage inductor of claim 1, wherein: The outer side surfaces of the upper magnetic plate, the lower magnetic plate and the two magnetic arms of the two magnetic cores are wound with a plurality of layers of first insulating layers; and/or, the first insulating layer is an insulating tape.
  5. 5. The high energy storage inductor of claim 1, wherein: The upper end of the upper baffle is provided with a first limit groove, the upper magnetic plates of the two magnetic cores are positioned in the first limit groove, and a first heat dissipation gap is formed between the upper magnetic plates of the two magnetic cores and the groove side wall of the first limit groove; And/or the lower end of the lower baffle plate is provided with a second limit groove, the lower magnetic plates of the two magnetic cores are positioned in the second limit groove, and a second heat dissipation gap is arranged between the lower magnetic plates of the two magnetic cores and the groove side wall of the second limit groove.
  6. 6. The high energy storage inductor of claim 5, wherein: The groove side wall of the first limiting groove is convexly provided with a plurality of first positioning convex ribs, and the outer convex surfaces of the first positioning convex ribs are abutted on the peripheral side surface of the upper magnetic plate; And/or, the groove side wall of the second limiting groove is provided with a plurality of second positioning convex ribs in a protruding mode, and the outer convex surfaces of the second positioning convex ribs are abutted to the peripheral side face of the lower magnetic plate.
  7. 7. The high energy storage inductor of claim 1, wherein: The two opposite sides of the upper baffle plate are provided with first heat dissipation grooves in a penetrating mode, and the two first heat dissipation grooves and the two magnetic arms are alternately arranged in the circumferential direction of the middle column ring; And/or second heat dissipation grooves are formed in the opposite sides of the lower baffle in a penetrating manner, and the two second heat dissipation grooves and the two magnetic arms are alternately arranged in the circumferential direction of the middle column ring.
  8. 8. The high energy storage inductor of claim 1, wherein: Four positioning holes are formed in the upper end of the upper baffle plate, and the four positioning holes are respectively formed in four corners of the upper baffle plate; And/or the lower end of the lower baffle plate is provided with a support plate, the lower end of the support plate protrudes outwards in the axial direction of the middle column ring and is arranged on the first insulating layer, and therefore a third heat dissipation gap is formed between the lower end of the support plate in the axial direction of the middle column ring and the periphery of the first insulating layer.
  9. 9. The high energy storage inductor of claim 8, wherein: the lower extreme of lower baffle is provided with four sets of location structures, and four sets of location structures set up respectively four corners of lower baffle, every group location structure include two reference columns, every the location end of reference column is in the axial of well collar outwards protrusion the lower extreme setting of backup pad.
  10. 10. The high energy storage inductor according to any one of claims 1 to 9, characterized in that: Each magnetic column comprises a first branch column and a second branch column, each magnetic arm comprises a first branch arm and a second branch arm, one first branch column and two first branch arms are arranged on the inner end face of one upper magnetic plate, and one second branch column and two second branch arms are arranged on the inner end face of the lower magnetic plate; The first branch columns are abutted with the second branch columns in the axial direction of the middle column ring, one first branch arm is abutted with one second branch arm in the axial direction of the middle column ring, and the positions of the first branch arm and the second branch arm, which are abutted with each other in the axial direction of the middle column ring, are fixedly connected through epoxy resin glue.

Description

High energy storage inductor Technical Field The utility model relates to the technical field of electromagnetic components, in particular to a high energy storage inductor. Background A high energy storage PFC inductor is an inductor used for power factor correction (Power Factor Correction, abbreviated as PFC), and generally acts in an inductance compensation type PFC circuit as well as an active PFC circuit. PFC inductors play a key role and their primary purpose is to smooth the input current waveform through the energy storage and filtering characteristics of the inductor, keeping it synchronized with the input voltage waveform, thereby improving the power factor. Specifically, the inductor stores energy when the voltage sine wave is at a peak value, and releases energy when the voltage drops, thereby maintaining the continuity and smoothness of the input current. Referring to fig. 1, the conventional inductor forms a winding accommodating cavity by using a middle post of a skeleton 1 and baffles 12 arranged at two sides of the skeleton 1, so that a coil winding 2 is wound on the middle post of the skeleton 1 and is positioned in the winding accommodating cavity formed by the cooperation of the baffles 12 at two sides and the middle post, then two opposite outer magnetic arms of an E-shaped magnet 5 are sleeved on the periphery of the coil winding 2, and a pin 3 is arranged on a mounting plate of the skeleton 1. Because the assembly production process of the existing inductor can wind the coil winding 2 on the middle column of the framework 1, and then the E-shaped magnetic element 5 is installed. However, in the actual assembly production process of the inductor, after the winding step of winding the coil winding 2 on the center post of the bobbin 1 is completed, the outer periphery of the coil winding 2 is easy to protrude from the winding accommodating cavity in the radial direction of the center post, that is, the outer periphery of the coil winding 2 is caused to protrude from the baffle 12 in the radial direction of the center post, so that during the subsequent installation process of the E-shaped magnetic 5, the two opposite outer magnetic arms of the E-shaped magnetic 5 rub against and squeeze the outer periphery of the coil winding 2 protruding from the baffle 12, which can cause damage and cracking of the coil enameling film of the coil winding 2 and even damage of the coil winding 2, thereby affecting the service life of the coil winding 2 and affecting the insulation performance, and further generating potential safety hazards. Disclosure of Invention In order to achieve the main purpose of the utility model, the utility model provides the high energy storage inductor, which not only can prevent the coil winding from being damaged in the assembly production process, but also can enhance the insulation performance, thereby improving the production quality of products, preventing the potential safety hazard of the products, prolonging the service life of the products, further ensuring the efficient, stable and safe operation of the products, ensuring the use of the products to be safer and more reliable, realizing the automatic and efficient assembly production, and having good consistency of the products. In order to achieve the main purpose of the utility model, the utility model provides a high energy storage inductor, which comprises a framework, a coil winding, two groups of magnetic cores, a first insulating layer, a second insulating layer and two insulating plastic covers, wherein the framework comprises an upper baffle plate, a middle column ring and a lower baffle plate, the upper baffle plate and the lower baffle plate are respectively positioned at two axial ends of the middle column ring, an outer ring cavity with an outer periphery open is formed among the middle column ring, the upper baffle plate and the lower baffle plate, the coil winding is wound in the outer ring cavity, the wire outlet ends of the coil winding penetrate out of the upper baffle plate or the lower baffle plate, the two groups of magnetic cores are adjacently arranged side by side in the radial direction of the middle column ring, each magnetic core comprises a magnetic column, an upper magnetic plate, a lower magnetic plate and two magnetic arms, the upper magnetic plate is positioned at the upper end of the upper baffle plate, the lower magnetic plate is positioned at the lower end of the lower baffle plate, the magnetic column is positioned in a circular hole of the middle column ring and is connected between the upper magnetic plate and the lower magnetic plate, the two magnetic arms are respectively positioned at the opposite outer sides of the outer ring cavity, the first insulating layer is wound on the upper plate, the lower magnetic plate and the two groups of the upper magnetic cores and the two magnetic arms are arranged at the periphery of the same as the two insulating layers, the two insulatin