CN216212762U - PFC inductor structure adopting distributed air gap - Google Patents
PFC inductor structure adopting distributed air gap Download PDFInfo
- Publication number
- CN216212762U CN216212762U CN202122313492.8U CN202122313492U CN216212762U CN 216212762 U CN216212762 U CN 216212762U CN 202122313492 U CN202122313492 U CN 202122313492U CN 216212762 U CN216212762 U CN 216212762U
- Authority
- CN
- China
- Prior art keywords
- magnetic core
- gasket
- air gap
- magnetic sheet
- spacer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Coils Or Transformers For Communication (AREA)
Abstract
The utility model discloses a PFC inductor structure adopting a distributed air gap, which comprises an upper magnetic core and a lower magnetic core, wherein the upper magnetic core is fixedly arranged at the top of the lower magnetic core, a magnetic core center pillar is arranged between the upper magnetic core and the lower magnetic core, the top end of the magnetic core center pillar is fixedly connected to the middle part of the bottom of the upper magnetic core, the magnetic core center pillar comprises a first gasket, a second gasket and a third gasket, a first R-shaped magnetic sheet is fixedly connected between the first gasket and the second gasket, a second R-shaped magnetic sheet is fixedly connected between the second gasket and the third gasket, a first air gap is arranged on one side of the first R-shaped magnetic sheet, which is adjacent to the second gasket, and a second air gap is arranged on one side of the second R-shaped magnetic sheet, which is adjacent to the third gasket, of the second R-shaped magnetic sheet and the second gasket. The distributed air gap PFC inductor structure is adopted, loss caused by edge magnetic flux is effectively reduced, temperature rise is reduced, the application range of the inductor is enlarged, and the efficiency of the inductor is improved.
Description
Technical Field
The utility model relates to the technical field of inductors, in particular to a PFC inductor structure adopting a distributed air gap.
Background
In general, in order to ensure the saturation performance of the magnetic core, the PFC inductor is designed to have a large air gap in the magnetic core, and such a large air gap structure often causes a large eddy current loss to cause a high temperature rise of the inductor.
At present, a center column of a traditional PFC inductor magnetic core adopts a single large air gap structure, large edge magnetic flux can be generated to penetrate through a coil, high-frequency magnetic flux can cause eddy current loss in the coil, and therefore the temperature rise of the inductor is high, and the common structure is difficult to meet for use occasions with strict temperature rise requirements, so that improvement is made on the common structure, and a distributed air gap PFC inductor structure is provided.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the utility model provides the following technical scheme:
the utility model relates to a PFC inductor structure adopting a distributed air gap, which comprises an upper magnetic core and a lower magnetic core, wherein the upper magnetic core is fixedly arranged at the top of the lower magnetic core, a magnetic core center pillar is arranged between the upper magnetic core and the lower magnetic core, the top end of the magnetic core center pillar is fixedly connected to the middle part of the bottom of the upper magnetic core, the magnetic core center pillar comprises a first gasket, a second gasket and a third gasket, a first R-shaped magnetic sheet is fixedly connected between the first gasket and the second gasket, and a second R-shaped magnetic sheet is fixedly connected between the second gasket and the third gasket.
In a preferred embodiment of the present invention, a first air gap is disposed on a side of the first R-shaped magnetic sheet and the first spacer adjacent to the second spacer, and a second air gap is disposed on a side of the second R-shaped magnetic sheet and the second spacer adjacent to the third spacer.
As a preferred technical scheme of the utility model, a framework is fixedly arranged between the bottom of the third gasket and the lower magnetic core, a winding coil is wound on the outer side of the framework, and two groups of PIN PINs which are symmetrically arranged are fixedly connected to the outer side of the framework.
As a preferable embodiment of the present invention, the first R-shaped magnetic sheet, the first spacer, and the second spacer are fixed by epoxy glue, and the second R-shaped magnetic sheet, the second spacer, and the third spacer are also fixed by epoxy glue.
In a preferred embodiment of the present invention, the first spacer, the second spacer, and the third spacer have the same thickness, and the first air gap and the second air gap have the same thickness.
The utility model has the beneficial effects that: this kind of adopt distributed air gap PFC inductor structure, the magnetic core center pillar is through the first gasket that sets up, second gasket and third gasket, and form the structure of two sections air gaps between first R type magnetic sheet and the second R type magnetic sheet, the quantity of air gap has been increased, reduce the air gap degree of depth, make the marginal magnetic flux diffusion scope of air gap reduce, and then reduced the distribution that the magnetic flux passes through the coil, can effectually reduce the loss that marginal magnetic flux brought through this kind of structure, thereby reduce the temperature rise, increase the application scope of inductor, improve inductor efficiency.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:
fig. 1 is an exploded view of a structure employing a distributed air gap PFC inductor according to the present invention;
fig. 2 is an exploded view of a leg in a core of a distributed air gap PFC inductor structure according to the present invention;
fig. 3 is a block diagram of a structural skeleton of a PFC inductor employing a distributed air gap according to the present invention;
fig. 4 is a block diagram of a first air gap employing a distributed air gap PFC inductor structure according to the present invention.
In the figure: 1. an upper magnetic core; 2. a lower magnetic core; 3. a magnetic core center pillar; 4. a framework; 5. a first gasket; 6. a first R-type magnetic sheet; 7. a second gasket; 8. a second R-type magnetic sheet; 9. a third gasket; 10. a winding coil; 11. a PIN PIN; 12. a first air gap; 13. a second air gap.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example (b): as shown in fig. 1-4, the PFC inductor structure with distributed air gap according to the present invention includes an upper magnetic core 1 and a lower magnetic core 2, wherein the upper magnetic core 1 is fixedly disposed on the top of the lower magnetic core 2, a magnetic core center pillar 3 is disposed between the upper magnetic core 1 and the lower magnetic core 2, the top end of the magnetic core center pillar 3 is fixedly connected to the middle portion of the bottom of the upper magnetic core 1, the magnetic core center pillar 3 includes a first spacer 5, a second spacer 7 and a third spacer 9, a first R-shaped magnetic sheet 6 is fixedly connected between the first spacer 5 and the second spacer 7, and a second R-shaped magnetic sheet 8 is fixedly connected between the second spacer 7 and the third spacer 9.
The first R-shaped magnetic sheet 6, the first gasket 5 and one side, adjacent to the second gasket 7, of the first R-shaped magnetic sheet are provided with the first air gap 12, the second R-shaped magnetic sheet 8, one side, adjacent to the third gasket 9, of the second gasket 7 is provided with the second air gap 13, the edge magnetic flux diffusion range is reduced through the first air gap 12 and the second air gap 13, the distribution of the magnetic flux passing through the winding coil 10 is further reduced, the loss caused by the edge magnetic flux is effectively reduced, the temperature rise is reduced, the application range of the inductor is enlarged, and the efficiency of the inductor is improved.
The fixed skeleton 4 that is provided with between the bottom of third gasket 9 and lower magnetic core 2, the outside winding of skeleton 4 has winding coil 10, and the outside fixedly connected with PIN PIN 11 that two sets of symmetries of skeleton 4 set up, PIN PIN 11 is used for connecting the lead wire.
The first R-shaped magnetic sheet 6, the first gasket 5 and the second gasket 7 are fixed by epoxy resin glue, and the second R-shaped magnetic sheet 8, the second gasket 7 and the third gasket 9 are also fixed by epoxy resin glue.
The thicknesses of the first gasket 5, the second gasket 7 and the third gasket 9 are the same, and the thicknesses of the first air gap 12 and the second air gap 13 are the same.
The working principle is as follows: skeleton 4 is used for coiling winding coil 10, the PIN joint is on PIN foot 11, magnetic core part main part comprises magnetic core 1 and lower magnetic core 2 and the magnetic core center pillar 3 between magnetic core 1 and the lower magnetic core 2, magnetic core center pillar 3 is by first gasket 5, second gasket 7, third gasket 9, first R type magnetic sheet 6 and second R type magnetic sheet 8 are constituteed, first gasket 5, second gasket 7 and first R type magnetic sheet 6 and second gasket 7, it is fixed all through the epoxy glue between third gasket 9 and the second R type magnetic sheet, pack into last magnetic core 1 and lower magnetic core 2 in the skeleton 4 around having winding coil 10 at last, this mode easy operation is convenient, and the effect is splendid.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides an adopt distributed air gap PFC inductor structure, includes magnetic core (1) and lower magnetic core (2), its characterized in that, go up magnetic core (1) and fix the top that sets up in lower magnetic core (2), it is provided with magnetic core center pillar (3) down to go up between magnetic core (1) and lower magnetic core (2), the top fixed connection of magnetic core center pillar (3) is in the middle part of last magnetic core (1) bottom, just magnetic core center pillar (3) are including first gasket (5), second gasket (7) and third gasket (9), first R type magnetic sheet (6) of fixedly connected with between first gasket (5) and second gasket (7), fixedly connected with second R type magnetic sheet (8) between second gasket (7) and third gasket (9).
2. A distributed air gap PFC inductor structure according to claim 1, characterized in that the side of the first R-type magnetic sheet (6) and the first spacer (5) adjacent to the second spacer (7) is provided with a first air gap (12), and the side of the second R-type magnetic sheet (8) and the second spacer (7) adjacent to the third spacer (9) is provided with a second air gap (13).
3. The structure of the inductor with the distributed air gap PFC according to claim 1, wherein a bobbin (4) is fixedly arranged between the bottom of the third pad (9) and the lower magnetic core (2), a winding coil (10) is wound on the outer side of the bobbin (4), and two sets of PIN PINs (11) which are symmetrically arranged are fixedly connected to the outer side of the bobbin (4).
4. A structure for a distributed air gap PFC inductor according to claim 1, characterized in that the first R-shaped magnetic sheet (6) and the first pad (5) and the second pad (7) are fixed together by epoxy glue, and the second R-shaped magnetic sheet (8) and the second pad (7) and the third pad (9) are also fixed together by epoxy glue.
5. A structure for a distributed air gap PFC inductor according to claim 2, characterized in that the first (5), second (7) and third (9) pads have the same thickness, and the first (12) and second (13) air gaps have the same thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122313492.8U CN216212762U (en) | 2021-09-24 | 2021-09-24 | PFC inductor structure adopting distributed air gap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122313492.8U CN216212762U (en) | 2021-09-24 | 2021-09-24 | PFC inductor structure adopting distributed air gap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216212762U true CN216212762U (en) | 2022-04-05 |
Family
ID=80921818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122313492.8U Active CN216212762U (en) | 2021-09-24 | 2021-09-24 | PFC inductor structure adopting distributed air gap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216212762U (en) |
-
2021
- 2021-09-24 CN CN202122313492.8U patent/CN216212762U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI389149B (en) | Symmetrical leakage inductance adjustable flat transformer | |
| WO2017136997A1 (en) | Stack-type, planar, three-phase open transformer core | |
| TW200522095A (en) | Transformer structure | |
| CN208478093U (en) | The transformer of winding construction | |
| CN216212762U (en) | PFC inductor structure adopting distributed air gap | |
| CN207731758U (en) | A kind of annular suitable for active filter inverter side is vertical around inductor | |
| CN111063505A (en) | High-power inductor | |
| WO2006007798A1 (en) | A kind of ballast ployed in high voltage sodium lamp | |
| CN213635634U (en) | Magnetic assembly | |
| CN212570589U (en) | Multi-coil continuous winding inductor | |
| CN211237921U (en) | Magnetic integrated transformer applied to switching power supply | |
| WO2021068679A1 (en) | Inductance device | |
| CN215007858U (en) | EQ-like magnetic powder core and novel three-phase inductor | |
| CN214797043U (en) | U-shaped magnetic core and transformer | |
| CN110808151A (en) | Two-way reactor | |
| CN217008896U (en) | Novel flat PFC inductance structure | |
| CN109950019A (en) | A kind of hot pressing integrally-formed inductor | |
| CN210325477U (en) | Coil high-frequency small transformer | |
| CN209980933U (en) | Frameless resonant inductor | |
| CN219180334U (en) | Output end multilayer arrangement type transformer | |
| CN218676635U (en) | Assembled I-shaped ferrite core | |
| CN219180323U (en) | Magnetic flux structure, inductor and switching power supply transformer capable of improving electromagnetic performance | |
| CN221746985U (en) | Nanocrystalline runway magnetic core common mode inductor | |
| CN203165626U (en) | Low-noise and energy-saving ferrite core | |
| CN217361337U (en) | SMD transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |