CN201345273Y - High power density and low loss EV-type inductor - Google Patents
High power density and low loss EV-type inductor Download PDFInfo
- Publication number
- CN201345273Y CN201345273Y CNU2008202051703U CN200820205170U CN201345273Y CN 201345273 Y CN201345273 Y CN 201345273Y CN U2008202051703 U CNU2008202051703 U CN U2008202051703U CN 200820205170 U CN200820205170 U CN 200820205170U CN 201345273 Y CN201345273 Y CN 201345273Y
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- magnetic core
- stitch
- skeleton
- power density
- inductor
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Abstract
The utility model discloses a high-power density and low loss EV-type inductor, which aims to provide an inductor with low profile, small volume, high unit power density, low loss, high reliability and good saturation, and higher utilization rate of the three-dimensional space of the whole transformer. The high-density low-profile inductor comprises a magnetic core (1), a framework (2) and a coil winding, wherein the magnetic core (1) is formed by butting and bonding two EV-type magnetic cores which are horizontally arranged, and the coil winding is coiled on the framework (2); and the magnetic core (1) and the framework (2) are bonded into a whole body with gluewater, and pins I (3) and pins II (4) are respectively positioned on the two end surfaces of the framework (2). Through the reasonable design of the height and the cross-sectional area of the central column of the magnetic core, the magnetic core is reasonably matched with coils, and the magnetic flux area is fully used, thereby greatly improving the power density per unit volume.
Description
Technical field
The utility model relates to a kind of power factor correction of various electronic equipments and high power density low-loss EV type inductor of harmonic filter circuit of being applied to.
Background technology
The application that power electronic equipment is increasingly extensive, make that the harmonic pollution problem is more and more serious, for the Switching Power Supply that is used in electronic installation or the Harmonics of Input of electric ballast meet the demands, must add power factor correction (PFC) circuit, and the PFC inducer that is used for wherein is an energy-storage travelling wave tube that enough big inductance value is arranged.
In the Switching Power Supply of various electronic equipments, the outputting inductance that is used to be output as the Switching Power Supply of DC (direct current) mainly plays level and smooth chokes and energy storage effect, it is connected with load usually, and the ability (promptly magnetic core is unsaturated under certain electric current) of bearing big electric current must be arranged; And the inductance that is in the output circuit part of electric ballast has the effect of resonance and energy storage concurrently, and it forms the resonance start-up circuit with output capacitance, at next energy storage of steady-working state and choking effect.
And adopt maximum modes that are the power ferrite magnetic core is increased air gap to make this inductor at present, adopt conventional E type or ring type magnetic core to make above inductor in the prior art mostly, ubiquity height height, volume are big, unit power cost height, the utilization of magnetic core sectional area is not enough, saturability is poor, the copper cash that consumes is many, loss is big, shortcomings such as the solid space utilance of whole transformer is low, this also be need that the engineer designs that volume is little, high power density, problem that high efficiency inductor faced.
In addition in existing some inductor because the restriction of encapsulation or circuit design, require inductor output and the input both sides (vertical skeleton) that are arranged on same end face on the skeleton, after adopting this structure, coil windings wherein tends to produce the situation of half turn, causes input big with output voltage allotment error; In addition this type of skeleton is difficult to realize the structure of a plurality of winding slots because the restriction of height, and then the resonance winding produces the phenomenon of layer short circuit easily in working order down, and these all are the defectives that exists in the prior art.
The utility model content
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, provides that a kind of height is low, volume is little, low-loss, unit power density is big, saturability good, reliability is high EV type inductor.
The technical scheme that the utility model adopted is: the utility model comprises magnetic core, skeleton and coil windings, described magnetic core and described skeleton are bonded into one by glue, described magnetic core is bonded by two horizontally disposed EV type magnetic core butt joints, the newel of described magnetic core inserts in the lumen pore of described skeleton, the housing ring of described magnetic core is wrapping described skeleton and described coil windings, described skeleton comprises pedestal and at least one winding slot, described coil windings is wound in the described winding slot, described skeleton is provided with at least two stitch I and at least two stitch II, can be straight cutting stitch or bending stitch, the head and the tail of described coil windings and the two ends of each tap are welded in respectively on described stitch I and the stitch II, and described stitch I and described stitch II lay respectively at the two ends of described pedestal one side; The height of the newel of described magnetic core when horizontal positioned is 80mm less than the whole height of described magnetic core and the sectional area of described newel
2~90mm
2
Be the two ends that bending shape is arranged at described pedestal one side respectively at stitch I described in another preferred version of the present utility model and stitch II, and the end welding of stitch one end of this bending shape and the head and the tail of coil or each tap, the other end is as the output or the input of inductor.
In another scheme of the present utility model, by the optimal design to magnetic core and skeleton, the total height of the inductor of the low moulding of described high density is fit to be applied to the higher T5 electric ballast of output smaller or equal to 15mm.
The beneficial effects of the utility model are: because magnetic core of the present utility model is bonded by two horizontally disposed EV type magnetic cores butt joints, be to belong to horizontal inductor, to compare height dimension less with the common electrical sensor; Described stitch I and described stitch II lay respectively at the two ends of described pedestal one side, can guarantee that coil turn all is an integer, can not have the situation that has more half turn, and input is little with output voltage allotment error; On skeleton structure, a plurality of winding slots can be set, prevent that coil from producing the situation of layer short circuit; Described stitch I and stitch II are the two ends that bending shape is arranged at described pedestal one side respectively, and the end welding of stitch one end of this bending shape and the head and the tail of coil or each tap, the other end is as the output or the input of inductor, than upright stitch, can reduce with the coil welding process in the welding and assembling height that produces.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of skeleton in the utility model;
Fig. 3 is the structure cutaway view of skeleton in the utility model;
Fig. 4 is the partial sectional view of I part among Fig. 3;
Fig. 5 is the structural representation of magnetic core in the utility model;
Fig. 6 is the cross section structure schematic diagram of magnetic core in the utility model.
Embodiment
As Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, shown in Figure 6, the utility model comprises magnetic core 1, skeleton 2 and coil windings, described magnetic core 1 and described skeleton 2 are bonded into one by glue, described magnetic core 1 is bonded by two horizontally disposed EV type magnetic core butt joints, the newel 11 of described magnetic core 1 inserts in the lumen pore of described skeleton 2, the housing ring of described magnetic core 1 is wrapping described skeleton 2 and described coil windings, described skeleton 2 comprises pedestal 21 and four winding slots 22 (also can be provided with single or a plurality of as required), described coil windings is wound in the described winding slot 22, the pedestal 21 of described skeleton is provided with 7 stitch I 3 and 7 stitch II 4 (can according to the different settings of use occasion), the head and the tail of described coil windings and the two ends of each tap are welded in respectively on the different described stitch I 3 and stitch II 4, described stitch I 3 and described stitch II 4 lay respectively at the two ends of described pedestal 21 1 sides, can guarantee that when the coiling winding coil coil turn is an integer, input and output voltage allotment error are reduced; And described stitch I 3 and stitch II 4 are the two ends that bending shape is arranged at described pedestal 21 respectively, described stitch I 3 is fixed in the described pedestal 21 and exposes two ends, one end of the stem of one end and described coil windings and each tap welds respectively, the other end is plugged on the wiring board as the output of inductor; The afterbody of described stitch II 4 one ends and described coil windings and the other end of each tap weld respectively, and the other end is as the input of inductor.
At the whole height of the newel 11 of the described magnetic core 1 of the magnetic core part height during in horizontal positioned less than described magnetic core 1, promptly also be lower than two side columns height and, and the sectional area of described newel 11 is 80mm
2~90mm
2, this scope makes full use of the cross-sectional area of magnetic core, can reach big inductance value and saturability well; Whole winding is as often as possible placed among the magnetic core, and then magnetic screen is abundant, anti-EMI function admirable; The inductor maximum height of the low moulding of the high density in the present embodiment is 15mm, especially be fit to be applied to the more flat T5 electric ballast of structure, can make magnetic core and coil reach best collocation by the optimal design to magnetic core and skeleton, be the density that overall volume reduces and improved unit power greatly.
Though embodiment of the present utility model describes with practical solution, but do not constitute restriction to the utility model implication, for those skilled in the art, according to this specification to the modification of its embodiment and with the combination of other schemes all be conspicuous.
Claims (3)
1, a kind of high power density low-loss EV type inductor, comprise magnetic core (1), skeleton (2) and coil windings, described magnetic core (1) and described skeleton (2) are bonded into one by glue, described magnetic core (1) is bonded by two horizontally disposed EV type magnetic core butt joints, the newel (11) of described magnetic core (1) inserts in the lumen pore of described skeleton (2), the housing ring of described magnetic core (1) is wrapping described skeleton (2) and described coil windings, described skeleton (2) comprises pedestal (21) and at least one winding slot (22), described coil windings is wound in the described winding slot (22), described skeleton is provided with at least two stitch I (3) and at least two stitch II (4), the head and the tail of described coil windings and the two ends of each tap are welded in respectively on described stitch I (3) and the stitch II (4), it is characterized in that: described stitch I (3) and described stitch II (4) lay respectively at the two ends of described pedestal (21) one sides; The height of newel (11) when horizontal positioned of described magnetic core (1) is 80mm less than the whole height of described magnetic core (1) and the sectional area of described newel (11)
2~90mm
2
2, high power density low-loss EV type inductor according to claim 1 is characterized in that: described stitch I (3) and stitch II (4) are the two ends that bending shape is arranged at described pedestal (21) one sides respectively.
3, high power density low-loss EV type inductor according to claim 1 and 2 is characterized in that: the total height of the inductor of the low moulding of described high density is smaller or equal to 15mm.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNU2008202051703U CN201345273Y (en) | 2008-12-15 | 2008-12-15 | High power density and low loss EV-type inductor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNU2008202051703U CN201345273Y (en) | 2008-12-15 | 2008-12-15 | High power density and low loss EV-type inductor |
Publications (1)
Publication Number | Publication Date |
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CN201345273Y true CN201345273Y (en) | 2009-11-11 |
Family
ID=41276859
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CNU2008202051703U Expired - Lifetime CN201345273Y (en) | 2008-12-15 | 2008-12-15 | High power density and low loss EV-type inductor |
Country Status (1)
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CN (1) | CN201345273Y (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101552090B (en) * | 2008-12-15 | 2011-11-23 | 珠海科德电子有限公司 | High power density low-loss EV type inductor |
CN104183373A (en) * | 2013-05-24 | 2014-12-03 | 台达电子工业股份有限公司 | Transformer |
-
2008
- 2008-12-15 CN CNU2008202051703U patent/CN201345273Y/en not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101552090B (en) * | 2008-12-15 | 2011-11-23 | 珠海科德电子有限公司 | High power density low-loss EV type inductor |
CN104183373A (en) * | 2013-05-24 | 2014-12-03 | 台达电子工业股份有限公司 | Transformer |
US9666354B2 (en) | 2013-05-24 | 2017-05-30 | Delta Electronics, Inc. | Transformer |
US9748036B2 (en) | 2013-05-24 | 2017-08-29 | Delta Electronics, Inc. | Transformer |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
AV01 | Patent right actively abandoned |
Granted publication date: 20091111 Effective date of abandoning: 20081215 |