CN214672155U - PFC inductor with step air gap - Google Patents
PFC inductor with step air gap Download PDFInfo
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- CN214672155U CN214672155U CN202120665383.XU CN202120665383U CN214672155U CN 214672155 U CN214672155 U CN 214672155U CN 202120665383 U CN202120665383 U CN 202120665383U CN 214672155 U CN214672155 U CN 214672155U
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- bottom plate
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Abstract
The utility model discloses a take PFC inductance of step air gap, including the skeleton, install in the magnetic core and the coil of skeleton, the magnetic core is E type magnetic core, including the bottom plate, with bottom plate intermediate junction's center pillar, the side post of being connected with the bottom plate left and right sides, the terminal surface of center pillar is the step face, the crisscross amalgamation of step face height of two E type magnetic core center pillars just has the amalgamation clearance. The utility model discloses a non-linear characteristic is controlled to magnetic core step salient's local saturation, can show to promote the light load inductance value, along with the increase of electric current, inductance value progressively descends to can compromise from the light load to the inductance value characteristic requirement of the whole load range of heavy load under certain inductance volume, thereby promote the efficiency of product.
Description
Technical Field
The utility model relates to an electronic equipment, concretely relates to inductance.
Background
The E-shaped magnetic core used by the conventional inductor comprises a bottom plate, a center pillar connected with the middle of the bottom plate, and side pillars connected with the left side and the right side of the bottom plate, wherein the top end of the center pillar is a complete plane. In addition, the development direction of PFC is to promote efficiency, reduce the volume, adapt to automated production, reduce cost.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a take PFC inductance of step air gap is provided, under certain inductance volume, compromise from the inductance value characteristic requirement of underloading to the whole load range of heavy load to promote the efficiency of product.
In order to solve the technical problem, the utility model adopts the following technical scheme: the utility model provides a take PFC inductance of step air gap, includes the skeleton, installs in the magnetic core and the coil of skeleton, the upper and lower intermediate position of skeleton is equipped with the wire winding groove, the coil is located in the wire winding groove, the skeleton is equipped with the center pillar hole that link up from top to bottom, the magnetic core is E type magnetic core, including the bottom plate, with bottom plate intermediate junction's center pillar, the side post of being connected with the bottom plate left and right sides, two E type magnetic core docks and the center pillar inserts the center pillar hole, outside cladding insulating sticky tape, the correspondence of lower extreme side is equipped with elementary stitch portion and secondary stitch portion on the skeleton, elementary stitch portion and secondary stitch portion correspond and are equipped with elementary stitch and secondary stitch, the terminal surface of center pillar is the step face, and the crisscross amalgamation clearance just has of step face height of the center pillar of two E type magnetic cores.
Preferably, the center pillar is an elliptical cylinder.
Preferably, the step surface is defined by a center line of an ellipse as a boundary line of the high and low surfaces.
Preferably, the primary stitch part or the secondary stitch part is provided with a slot connected with the outer circular surface of the winding slot.
Preferably, both side surfaces of the slot and a surface connected with the outer circular surface of the winding slot are inclined surfaces inclined towards the inner side of the winding slot.
The utility model discloses a technical scheme, the magnetic core center pillar is the step form, and the local saturation through magnetic core step salient controls nonlinear characteristic, can show the promotion light load sensing value, along with the increase of electric current, the inductance volume progressively descends to can compromise from the light load to the inductance volume characteristic requirement of the whole load scope of heavy load under certain inductance volume, thereby promote the efficiency of product.
The utility model discloses a be oval by circular adjustment with the magnetic core center pillar, under the unchangeable condition in wire winding space, reduce and account for PCB face area.
The specific technical solution and the advantages of the present invention will be described in detail in the following detailed description with reference to the accompanying drawings.
Drawings
The invention will be further described with reference to the accompanying drawings and specific embodiments:
FIG. 1 is a schematic structural view of the framework of the present invention;
fig. 2 is a schematic structural diagram of the magnetic core in the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It will be appreciated by those skilled in the art that features from the examples and embodiments described below may be combined with each other without conflict.
As shown in fig. 1 and 2, a PFC inductor with a stepped air gap includes a frame 1, a magnetic core 2 and a coil installed on the frame, wherein a winding slot 11 is formed in an upper middle position and a lower middle position of the frame 1, the coil is installed in the winding slot, the frame is provided with a middle column hole 12 which is through from top to bottom, the magnetic core 2 is an E-shaped magnetic core, and includes a bottom plate 21, a middle column 22 connected with the middle of the bottom plate, and side columns 23 connected with the left side and the right side of the bottom plate, two E-shaped magnetic cores are butted and inserted into the middle column hole, and an insulating tape is coated on the outer side of the middle column hole, a primary pin part 13 and a secondary pin part 14 are correspondingly arranged on the upper side and the lower side of the frame 1, the primary pin part and the secondary pin part are correspondingly provided with a primary pin and a secondary pin, the end surface of the middle column is a stepped surface 221, and the stepped surfaces of the two E-shaped magnetic cores are staggered and spliced in height and have a splicing gap. The nonlinear characteristic is controlled through the local saturation of the protruding part of the step of the magnetic core, the inductance value of light load can be obviously improved, and the inductance value gradually decreases along with the increase of current, so that the inductance characteristic requirement of the whole load range from light load to heavy load can be considered under a certain inductance volume, and the product efficiency is improved.
In this embodiment, the center pillar is an elliptical cylinder. Through being oval for the circular adjustment with the magnetic core center pillar, under the unchangeable condition in wire winding space, reduce and account for PCB face area.
Preferably, the step surface is defined by a center line of an ellipse as a boundary line of the high and low surfaces.
In order to facilitate automatic winding, the primary pin part or the secondary pin part is provided with a slot 131 connected with the outer circular surface of the winding slot. The two side surfaces of the slot and the surface connected with the excircle surface of the winding slot are inclined surfaces inclined towards the inner side of the winding slot.
In addition to the above preferred embodiments, the present invention has other embodiments, and those skilled in the art can make various changes and modifications according to the present invention without departing from the spirit of the present invention, which should fall within the scope defined by the appended claims.
Claims (5)
1. The utility model provides a take PFC inductance of step air gap, includes the skeleton, installs in the magnetic core and the coil of skeleton, the upper and lower intermediate position of skeleton is equipped with the wire winding groove, the coil is located in the wire winding groove, the skeleton is equipped with the center pillar hole that link up from top to bottom, the magnetic core is E type magnetic core, including the bottom plate, with bottom plate intermediate junction's center pillar, the side post of being connected with the bottom plate left and right sides, post hole in two E type magnetic core dockings and center pillar insertion, outside cladding insulating sticky tape, the correspondence of lower extreme side is equipped with elementary stitch portion and secondary stitch portion on the skeleton, elementary stitch portion and secondary stitch portion correspond and are equipped with elementary stitch and secondary stitch, its characterized in that: the terminal surface of center pillar is the step face, and the step face height staggered amalgamation of the center pillar of two E type magnetic cores just has the amalgamation clearance.
2. The PFC inductor of claim 1, wherein: the center pillar is an oval cylinder.
3. The PFC inductor of claim 2, wherein: the step surface takes an elliptic central line as a boundary line of the high surface and the low surface.
4. The PFC inductor of claim 1, wherein: the primary pin part or the secondary pin part is provided with a slot connected with the outer circular surface of the winding slot.
5. The PFC inductor with a stepped air gap of claim 4, wherein: the two side surfaces of the slot and the surface connected with the excircle surface of the winding slot are inclined surfaces inclined towards the inner side of the winding slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120665383.XU CN214672155U (en) | 2021-04-01 | 2021-04-01 | PFC inductor with step air gap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120665383.XU CN214672155U (en) | 2021-04-01 | 2021-04-01 | PFC inductor with step air gap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214672155U true CN214672155U (en) | 2021-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120665383.XU Active CN214672155U (en) | 2021-04-01 | 2021-04-01 | PFC inductor with step air gap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214672155U (en) |
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2021
- 2021-04-01 CN CN202120665383.XU patent/CN214672155U/en active Active
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