CN101640101B - Inductive apparatus - Google Patents
Inductive apparatus Download PDFInfo
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- CN101640101B CN101640101B CN2009100894747A CN200910089474A CN101640101B CN 101640101 B CN101640101 B CN 101640101B CN 2009100894747 A CN2009100894747 A CN 2009100894747A CN 200910089474 A CN200910089474 A CN 200910089474A CN 101640101 B CN101640101 B CN 101640101B
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- 230000001939 inductive effect Effects 0.000 title abstract 3
- 238000003780 insertion Methods 0.000 claims description 19
- 230000037431 insertion Effects 0.000 claims description 19
- 238000001746 injection moulding Methods 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 8
- 229910052802 copper Inorganic materials 0.000 abstract description 8
- 239000010949 copper Substances 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 3
- 230000005611 electricity Effects 0.000 abstract 1
- 239000000306 component Substances 0.000 description 41
- 238000010586 diagram Methods 0.000 description 7
- 230000004907 flux Effects 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
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- 239000004593 Epoxy Substances 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/04—Fixed inductances of the signal type with magnetic core
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/10—Composite arrangements of magnetic circuits
- H01F3/14—Constrictions; Gaps, e.g. air-gaps
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/346—Preventing or reducing leakage fields
Abstract
The invention relates to an inductive apparatus, comprising a magnetic return path magnet and a coil frame coiled with a coil. The magnetic return path magnet comprises a center pillar magnetic core body; one end of the profile of the magnetic core body is provided with an air gap adjusting groove; the center pillar magnetic core body is circumferentially provided with at least three side pillar magnetic core bodies; the magnetic core bodies are U-shaped magnetic core bodies with openings at one sides thereof; the coil frame is provided with locating grooves of the side pillar magnetic core bodies; and air gasp medium with depth of 0.1mm-5mm is filled between the U-shaped magnetic core bodies in a magnetic return path and the pillar magnetic core bodies. The apparatus has the following advantages of: compared with the traditional inductive apparatus, saving copper material by 20-60% and reducing volume at least by 10%-30%; because the air gap is far away from a solenoid, effectively reducing the affect of spread magnetic flow, reducing the power consumption of the apparatus, saving electricity energy, and prolonging the service life of the product; and improving the inductance precision from +/-4%-+/-6% of the inductance precision of the traditional coil inductor to +/-1%.
Description
Technical field
The present invention relates to electric elements, relate in particular to a kind of inductance component, this inductance component is the power conversion core component of green illumination and various electronic equipments.
Background technology
Traditional coil class inductance component, generally pair " mouth " font magnetic loops of forming by " EE " type combination magnetic core or " EI " type combination magnetic core and cooperate bobbin to form around last enamelled wire.For preventing magnetic saturation, must leave magnetic air gap in two " mouth " font magnetic loops that " EE " type magnetic core or " EI " type magnetic core are formed.Magnetic air gap places on the center pillar of magnetic core usually, it is the middle part that magnetic air gap places the line bag, because the magnetic permeability of air is low, near magnetic air gap, can there be dispersing flux, therefore near the coil the air air gap can not all participate in power conversion, most filling effect that only rises, and magnetic line of force perpendicular cuts coil causes coil heating simultaneously, thereby cause the increase of device self copper resistance and copper loss, the power loss of device is increased.This situation is waste material but also waste electric energy not only, reduces the useful life of product simultaneously.Just locate and to regulate when making magnetic core as its air gap of inductance component, along with the accumulation of production technology error will strengthen inductance error, therefore the error rate height of inductance, especially low inductance component inductance error rate is higher, and the precision of inductance can only reach ± and 4%～± 6%; Along with the miniaturization of electronic device, coil class inductance component has also been proposed the miniaturization requirement, and the said structure inductance component exists magnetic core low in useful space utilance, the miniaturization difficulty simultaneously.
Along with the fast development of industry, power consumption increases substantially, produce coil main raw material(s)---non-renewable resources such as copper mine are also in continuous minimizing.For fully reasonable use a resource shrinkage consumption, reduce product cost simultaneously greatly, need be applied to the electromagnetism basic principle in the design of coil class inductance component effectively, traditional coil class inductance component is improved.
Summary of the invention
The objective of the invention is: be optimized by two " mouth " font magnetic circuits to the traditional inductor part, thereby reduce coil and twine the number of turn, promptly shorten the enamelled wire length of winding coil, device self copper resistance and copper loss are reduced and the technical scheme of a kind of inductance component of proposing.This scheme is improved traditional coil class inductance component, is equipped with the bobbin and the air gap medium of special shape, reaches and promptly saves copper material saves energy again, improves the inductance precision, prolongs the useful life of product simultaneously.
Technical scheme of the present invention is achieved in that a kind of inductance component, comprises magnetic loop magnet, coil and coil rack, and described coil is fastened on coil rack; Described magnetic loop magnet comprises a center pillar magnetic core stack, be provided with at least three side column magnetic core stacks around the distribution of center pillar magnetic core stack, described side column magnetic core stack is " U " shape side column magnetic core stack of a side opening, coil rack is enclosed within on the center pillar magnetic core stack, described coil rack is provided with side column magnetic core stack detent, " U " shape side column magnetic core stack open side insertion detent is fixed on the coil rack and forms closed magnetic loop with the center pillar magnetic core stack, " U " shape side column magnetic core stack open side has two export-oriented end faces, evenly leave a air gap between described export-oriented end face and the center pillar magnetic core stack side, be filled with the air gap medium in the air gap less than 5mm.
In order to realize the fine setting of inductance component inductance value, improve the inductance value precision, described center pillar magnetic core stack side one end is provided with air gap and adjusts groove, described air gap is adjusted groove around an end that is arranged on center pillar magnetic core stack side, adjusting groove with air gap is that the boundary is divided into short side and long side surface with center pillar magnetic core stack side, and the trough rim that leans against long side surface from described air gap adjustment groove equals the length of side on " U " shape side column magnetic core stack extroversion end face a limit to the distance of the short side end face of center pillar magnetic core stack.
The present invention compared with prior art has the following advantages:
1. compare with " EE " type or " EI " molded lines circle class inductance component of the equal inductance value of tradition, inductance component of the present invention can be saved 20%～60% copper material, and volume also can reduce 10%～30%;
2. inductance component air gap of the present invention has reduced the influence of dispersing flux effectively away from the line bag, has reduced the power loss of device, not only saves energy but also prolong useful life of product;
3. behind the employing fine tuning structure, the inductance value precision from conventional coil class inductor current accuracy of measurement ± 4%～± 6% bring up to ± 1%.
Below in conjunction with drawings and Examples the present invention is described in detail.
Description of drawings
Fig. 1 is an inductance component structural representation of the present invention;
Fig. 2 is an inductance component magnetic loop magnet schematic diagram of the present invention;
Fig. 3 is an inductance component coil skeleton structure schematic diagram of the present invention;
Fig. 4 is the rectangular sheet air gap of an inductance component of the present invention dieelctric sheet schematic diagram;
Fig. 5 is an inductance component annular slice air gap dieelctric sheet schematic diagram of the present invention;
Fig. 6 is the inductance component structural representation of four " U " shapes of the present invention side column magnetic core stack;
Fig. 7 is four " U " shapes of the present invention side column magnetic core stack magnetic loop magnet schematic diagram;
Fig. 8 is four " U " shapes of the present invention side column magnetic core stack inductance component coil rack schematic diagram;
Fig. 9 is columniform inductance component structural representation for center pillar magnetic core stack of the present invention;
Figure 10 has the inductance component magnetic loop magnet decomposing schematic representation of groove center pillar magnetic core stack for the present invention;
Figure 11 has groove center pillar magnetic core stack enlarged diagram for the present invention.
Embodiment
Embodiment 1
A kind of inductance component embodiment, referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, described inductance component comprises magnetic loop magnet and coil 1, described magnetic loop magnet comprises a center pillar magnetic core stack 2,2-1 is the center with center pillar magnetic core stack central axis, be provided with at least three side column magnetic core stacks 3 around the distribution of center pillar magnetic core stack, described side column magnetic core stack is " U " shape side column magnetic core stack of a side opening 3-1, it is that a straight-arm 3-2 is arranged that described " U " shape side column magnetic core stack can be considered, be " U " shape side column magnetic core stack that the 90 folding arm 3-3 that spend angles form by two with straight-arm respectively at the straight-arm two ends, a coil rack 4 that includes side column magnetic core stack detent 4-1 is enclosed within on the center pillar magnetic core stack, " U " shape side column magnetic core stack open side insertion detent is fixed on the coil rack and forms closed magnetic loop with the center pillar magnetic core stack, two export-oriented end face 3-4 of " U " shape side column magnetic core stack open side, in closed magnetic loop, evenly leave a air gap between described " U " shape side column two export-oriented end faces of magnetic core stack open side and the center pillar magnetic core stack side less than 5mm, described coil is fastened on coil rack, be filled with air gap medium 5 in the described air gap, the air gap medium is as the PET plastic sheet, glass cloth epoxy sheet etc.
Described coil rack 4 is the integrated through injection molding structure, as shown in Figure 3, coil rack includes coil and twines axle 4-3, twine axle at coil and axially be provided with coil postive stop baffle 4-4 in two ends, lateral surface 4-4-1 center at postive stop baffle is provided with open-work 4-2, described open-work passes coil and twines axle, this open-work is used to install the center pillar magnetic core stack, lateral surface and edge end face 4-4-2 at postive stop baffle are provided with side column magnetic core stack detent 4-1, groove on the lateral surface of postive stop baffle and open-work connect, the groove of described detent for " U " side column magnetic core stack being snapped in; On the lateral surface of postive stop baffle, be provided with air gap medium insertion groove 4-5 around the open-work edge; Described medium insertion groove can be the groove that axial thorough coil twines axle; Described air gap medium insertion groove also can be the endless groove on the coil postive stop baffle only, the deep equality of its degree of depth and side column magnetic core stack detent.
If described open-work is a rectangular opening, then described air gap medium insertion groove can be provided with on three limits of open-work, perhaps be provided with simultaneously on four limits, the air gap medium insertion groove of this kind structure, use a rectangular sheet air gap dieelctric sheet that equates with center pillar magnetic core stack height to insert, can finish the air gap medium setting at two ends simultaneously, and not need the flip coils skeleton to carry out twice insertion from an end of coil rack, improved operating efficiency, rectangular sheet air gap dieelctric sheet as shown in Figure 4.
If air gap medium insertion groove is the annular recess on the coil postive stop baffle, the deep equality of its degree of depth and side column magnetic core stack detent, then described air gap dieelctric sheet can be an annular slice, ring segment inserts respectively from the postive stop baffle at coil rack two ends, the annular dieelctric sheet is with respect to the installation of single side face air gap dieelctric sheet, the annulus gap dieelctric sheet has improved operating efficiency equally, and annular slice air gap dieelctric sheet as shown in Figure 5.
Generally, the magnetic flux density that is less than or equal to the side column magnetic core stack for the magnetic flux density that guarantees the center pillar magnetic core stack, the cross-sectional area of described center pillar magnetic core stack will be equal to or slightly less than a plurality of side column magnetic core stack cross-sectional area sum totals, to avoid the close generation heating of the too high magnetic of magnetic core stack to increase loss, the close utilance that lowers magnetic core stack of perhaps low excessively magnetic.
The cross section of described center pillar magnetic core stack can be a polygon, and the cross section of center pillar magnetic core stack illustrated in figures 1 and 2 is a quadrangle; Described three side column magnetic core stacks are 90 degree angles mutually and are provided with around three sides of center pillar magnetic core stack, and its angle is with the angle 6 between three side column magnetic core stack central axis that are affixed to the center pillar magnetic core stack.
Certainly described three side column magnetic core stacks also can be 120 degree angles mutually around the setting of center pillar magnetic core stack, but this kind structure need change some traditional processing molds, increases the initial stage input cost.
A kind of inductance component embodiment of four " U " shape side column magnetic core stacks, referring to Fig. 6, Fig. 7, Fig. 8 and embodiment 1, present embodiment " U " shape side column magnetic core stack is four as different from Example 1, the export-oriented end face of four couples of described four " U " side column magnetic core stacks pastes mutually with center pillar magnetic core stack side, and four side column magnetic core stacks are 90 degree angles mutually around the setting of center pillar magnetic core stack.
Described side column magnetic core stack can also be that five or six evenly are provided with around the center pillar magnetic core stack.
The cross section of described center pillar magnetic core stack and " U " shape side column magnetic core stack is a rectangle, and the center pillar magnetic core stack is positioned in the middle of four side column magnetic core stacks, and the end face of two folding arms of four side column magnetic core stacks respectively relatively; Four " U " shape side column magnetic core stack inductance component coil racks as shown in Figure 6, described coil rack is the integrated through injection molding structure, coil rack two end-coil postive stop baffle outer surface centers are rectangle open-work 4-2, side column magnetic core stack location notch 4-1 for four cross grooves that the limit communicates of rectangle open-work, four limits of rectangle open-work are provided with air gap medium insertion groove 4-5, and the medium insertion groove forms etched skeleton type 4-6 on the open-work hole wall of coil rack; Described air gap medium is a book sheet side strip structure, the thickness of air gap medium requires to determine according to magnetic saturation, be generally 0.01～5mm, the method has changed the manufacture method of traditional inductance component, can adjust the thickness of medium according to process condition easily, thereby adjust the size of air gap, save time, laborsaving, province's fund; Coil twines and is arranged on the coil winding axle 2-2, the center pillar magnetic core stack inserts in the open-work of coil rack, four air gap media are inserted respectively in the air gap medium insertion groove, the folding arm of four side column magnetic core stacks inwardly inserts in the cross groove of coil rack coil postive stop baffle outer surface, make side column magnetic core stack straight-arm embed in the groove of postive stop baffle edge end face 4-4-2 and fit tightly the coil rack edge, the folding arm end face of side column magnetic core stack docks four " mouth " font closed magnetic loops of formation with center pillar magnetic core stack side and air gap medium-tight.
Concrete assembling is: the center pillar magnetic core stack of magnetic loop magnet is inserted in the central bore of coil rack, make the two ends of center pillar magnetic core stack all have a little part to be exposed to the coil rack postive stop baffle outside, two air gap media are inserted respectively vertically in the air gap medium insertion groove of two sides about coil rack center pillar magnetic core stack.The folding arm of two side column magnetic core stacks is inwardly inserted coil rack two postive stop baffle outer surfaces cross groove about in two side grooves, the straight-arm of side column magnetic core stack embeds in the groove at two postive stop baffle edges and fits tightly the coil rack edge, make the both ends of the surface of center pillar magnetic core stack and air gap medium concordant, and make end face and air gap medium and two " mouth " shape closed magnetic loop of center pillar magnetic core stack butt joint formation of side column magnetic core stack folding arm with the lateral surface 3-6 of side column magnetic core stack folding arm.In the outside of left and right sides side column magnetic core stack with insulating tape closely wrapping make dock between side column magnetic core stack and coil rack, air gap medium, the center pillar magnetic core stack tight, firm.Then, other two air gap media are inserted vertically in former and later two side medium insertion grooves of coil rack center pillar magnetic core stack respectively again, two other side column magnetic core stack folding arm is inwardly inserted in former and later two side grooves of cross groove of coil rack two postive stop baffle outer surfaces, the straight-arm of side column magnetic core stack embeds in the groove at two postive stop baffle edges and fits tightly the bobbin edge, make the both ends of the surface of center pillar magnetic core stack and air gap medium concordant, and make end face and air gap medium and center pillar magnetic core stack butt joint formation another pair " mouth " font closed magnetic loop of side column magnetic core stack folding arm with the lateral surface of side column magnetic core stack folding arm.Then, in the outside of both sides, front and back side column magnetic core stack with insulating tape closely wrapping make dock between side column magnetic core stack and coil rack, air gap medium, the center pillar magnetic core stack tight, firm.
A kind of center pillar magnetic core stack is cylindrical inductance component embodiment, and referring to Fig. 9 and embodiment 1, embodiment 2, different with the foregoing description is that described center pillar magnetic core stack is a cylinder; Because the center pillar magnetic core stack is a circular cylinder, therefore the export-oriented end face of described " U " shape side column magnetic core stack is the arc surface of indent, and the side of arc surface and cylinder magnetic core stack matches.
A kind of center pillar magnetic core stack side is provided with reeded inductance component embodiment, referring to Figure 10, Figure 11, embodiment 1, embodiment 2 and embodiment 3, different with the foregoing description is: in order to realize a kind of fine setting of inductance component, improve inductance component inductance value precision, described center pillar magnetic core stack side one end is provided with air gap and adjusts groove 2-3.
The end of present embodiment in described center pillar magnetic core stack side radially is provided with a circle air gap and adjusts groove, and promptly described air gap is adjusted groove is arranged on center pillar magnetic core stack side for annular a end; Adjusting groove with air gap is that center pillar magnetic core stack side, boundary has short side and long side surface, equals the length of side on the export-oriented end face a of " U " shape side column magnetic core stack limit from the distance of described air gap adjustment groove long side surface groove short side end 2-4 along 2-5 to the center pillar magnetic core stack; The height of described center pillar magnetic core stack is slightly less than the width between " U " shape side column magnetic core stack open outer side face (lateral surfaces of two folding arms) 3-5 simultaneously, and its difference equals the width that air gap is regulated groove.The width that air gap described in the embodiment is adjusted groove is less than 2mm, and the degree of depth of groove is less than 1mm.
Adopting this kind structure is to finely tune the center pillar magnetic core stack and the air gap of " U " shape side column magnetic core stack, realize the inductance fine setting after inductance component is made, this kind structure can with the inductance value precision of inductance component of the same type from traditional ± 4% and ± 6% bring up to ± 1%.
Present embodiment center pillar magnetic core stack axial height is arranged on less than the width between " U " shape side column magnetic core stack open outer side face, its objective is to prevent to exceed " U " shape side column magnetic core stack open outer side face height, cause the center pillar magnetic core stack to be easy to be subjected to the external force effect and change the device inductance value that has mixed up if adjust back center pillar magnetic core stack.
A kind of end has the inductance component embodiment of the center pillar magnetic core stack of groove, and referring to embodiment 4, the width that described air gap is adjusted groove is 1.5mm, and the degree of depth of groove is 0.5mm.
A kind of end has the inductance component embodiment of the center pillar magnetic core stack of groove, and referring to embodiment 4, the width that described air gap is adjusted groove is 1mm, and the degree of depth of groove is 0.2mm.
Embodiment 7
Present embodiment is the specific descriptions of inductance component making and inductance value fine tuning: referring to the foregoing description;
Twine winding around on the axle at a coil that includes the coil rack of side column magnetic core stack detent; At first, on the roll of coil rack,, twine successively with enamelled wire and insulating tape according to the required number of turns, winding order and insulation request; Coil lead is placed on the stitch or other positions that needs of coil rack, ward off tin again and make the line bag; Described skeleton twines axle at coil and axially is provided with the coil postive stop baffle in two ends, is provided with side column magnetic core stack detent, the groove of described detent for being meshed with side column magnetic core stack cross sectional shape at the lateral surface of postive stop baffle.
A center pillar magnetic core stack inserts in the open-work of coil rack, in the location notch on " U " shape side column magnetic core stack insertion shaped framework coil postive stop baffle of an end opening, two export-oriented end faces of its " U " shape side column magnetic core stack open side are affixed to center pillar magnetic core stack axial sides, make " U " shape side column magnetic core stack and center pillar magnetic core stack form closed magnetic loop; In closed magnetic loop, the air gap medium that inserts different-thickness is set between described " U " shape side column two export-oriented end faces of magnetic core stack open side and the center pillar magnetic core stack, forming distance is the even air gap of 0.1mm to 5mm, pressure acts on " U " shape side column magnetic core stack outside perpendicular to center pillar magnetic core stack axis, and described pressure is 0.1 to 0.5kg/cm
2, promptly closely wrap up with insulating tape in the outside of side column magnetic core stack, make coil rack, closed magnetic loop combination magnet, air gap medium dock each other closely, firmly; Guarantee that error is less than 0.01mm between each air gap.
Carry out coarse adjustment: the inductance value error is sifted out as waste product greater than 5% magnetic core stack by measuring.
One end of described center pillar magnetic core stack radially is provided with a circle width for adjusting groove less than 2mm, the degree of depth for the air gap less than 1mm, and described air gap is adjusted the inboard length distance that equals an end face of " U " shape side column magnetic core stack to the distance of center pillar magnetic core stack end face of groove; The height distance of described center pillar magnetic core stack is slightly less than the height distance between two export-oriented end face lateral surfaces of " U " shape side column magnetic core stack open side simultaneously, and described two height difference equal the width of adjustment of inductance groove promptly less than 2mm.
Concrete inductance value fine tuning is:
In the scope of described center pillar magnetic core stack axial height less than " U " shape side column magnetic core stack axial height 2mm, mobile center pillar magnetic core stack in the open-work of coil rack, air gap by described center pillar magnetic core stack one end adjusts that groove is upper and lower to be moved, and has promptly changed the air gap amount of closed magnetic loop and then has adjusted the inductance value of inductance component.
Claims (9)
1. an inductance component comprises magnetic loop magnet, coil and coil rack, and described coil is fastened on coil rack; It is characterized in that, described magnetic loop magnet comprises a center pillar magnetic core stack, be provided with at least three side column magnetic core stacks around the distribution of center pillar magnetic core stack, described side column magnetic core stack is " U " shape side column magnetic core stack of a side opening, coil rack is enclosed within on the center pillar magnetic core stack, described coil rack is provided with side column magnetic core stack detent, " U " shape side column magnetic core stack open side insertion detent is fixed on the coil rack and forms closed magnetic loop with the center pillar magnetic core stack, " U " shape side column magnetic core stack open side has two export-oriented end faces, evenly leave a air gap between described export-oriented end face and the center pillar magnetic core stack side less than 5mm, be filled with the air gap medium in the air gap, described coil rack is the integrated through injection molding structure, coil rack includes coil and twines axle, twine axle at coil and axially be provided with the coil postive stop baffle in two ends, lateral surface center at postive stop baffle is provided with open-work, described open-work passes coil and twines axle, described side column magnetic core stack detent is arranged on the lateral surface and the edge end face of postive stop baffle, the detent of described postive stop baffle lateral surface and open-work connect, the groove of described detent for " U " shape side column magnetic core stack being snapped in; On the lateral surface of postive stop baffle, be provided with air gap medium insertion groove around the open-work edge.
2. a kind of inductance component according to claim 1 is characterized in that, the axial thorough coil of described air gap medium insertion groove twines axle, and described air gap medium is rectangular sheet.
3. a kind of inductance component according to claim 1 is characterized in that, described air gap medium insertion groove is the endless groove on the coil postive stop baffle, the deep equality of its degree of depth and side column magnetic core stack detent, and described air gap medium is an annular slice.
4. a kind of inductance component according to claim 1 is characterized in that, described " U " shape side column magnetic core stack is four, and described four " U " shape side column magnetic core stacks are 90 degree angles mutually around the setting of center pillar magnetic core stack.
5. a kind of inductance component according to claim 1 is characterized in that, described center pillar magnetic core stack is a cylinder, and the export-oriented end face of described " U " shape side column magnetic core stack is the arc surface of indent, and the side of arc surface and cylinder magnetic core stack matches.
6. a kind of inductance component according to claim 1 is characterized in that, described center pillar magnetic core stack side one end is provided with air gap and adjusts groove.
7. a kind of inductance component according to claim 6, it is characterized in that, described air gap is adjusted groove is arranged on center pillar magnetic core stack side for annular a end, adjusting groove with air gap is that the center pillar magnetic core stack side on boundary has short side and long side surface, adjusts groove equals the export-oriented end face of " U " shape side column magnetic core stack along the distance to the short side end of center pillar magnetic core stack by the groove of long side surface the length of side along the limit of center pillar magnetic core stack central axis from described air gap.
8. a kind of inductance component according to claim 6 is characterized in that, the height of described center pillar magnetic core stack is less than the width between " U " shape side column magnetic core stack open outer side face, and its difference equals the width that air gap is adjusted groove.
9. a kind of inductance component according to claim 6 is characterized in that, described air gap is adjusted the width of groove less than 2mm, and the degree of depth of groove is less than 1mm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100894747A CN101640101B (en) | 2009-07-21 | 2009-07-21 | Inductive apparatus |
| PCT/CN2009/074647 WO2011009247A1 (en) | 2009-07-21 | 2009-10-28 | Inductance component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100894747A CN101640101B (en) | 2009-07-21 | 2009-07-21 | Inductive apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101640101A CN101640101A (en) | 2010-02-03 |
| CN101640101B true CN101640101B (en) | 2011-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100894747A Active CN101640101B (en) | 2009-07-21 | 2009-07-21 | Inductive apparatus |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101640101B (en) |
| WO (1) | WO2011009247A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102208241B (en) * | 2011-01-25 | 2015-09-09 | 清流县鑫磁线圈制品有限公司 | A kind of combination center pillar inductor |
| KR101241564B1 (en) | 2011-08-04 | 2013-03-11 | 전주대학교 산학협력단 | Couple inductor, Couple transformer and Couple inductor-transformer |
| CN114937549B (en) * | 2022-05-23 | 2024-04-23 | 江苏英飞源智慧能源有限公司 | Common mode inductance |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3865796B2 (en) * | 1994-11-28 | 2007-01-10 | 株式会社タムラ製作所 | Inverter transformer |
| EP0932169A3 (en) * | 1998-01-23 | 1999-11-03 | Sumitomo Wiring Systems, Ltd. | Ignition coil for internal combustion engine and method of manufacturing an ignition coil |
| CN1325120A (en) * | 2000-05-22 | 2001-12-05 | 达方电子股份有限公司 | Transformer |
| CN2754191Y (en) * | 2004-12-15 | 2006-01-25 | 鲁黎华 | Low magnetic leakage low-reluctance transformer |
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2009
- 2009-07-21 CN CN2009100894747A patent/CN101640101B/en active Active
- 2009-10-28 WO PCT/CN2009/074647 patent/WO2011009247A1/en active Application Filing
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| Publication number | Publication date |
|---|---|
| CN101640101A (en) | 2010-02-03 |
| WO2011009247A1 (en) | 2011-01-27 |
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