CN101620916A - Magnetic element - Google Patents
Magnetic element Download PDFInfo
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- CN101620916A CN101620916A CN200810128292A CN200810128292A CN101620916A CN 101620916 A CN101620916 A CN 101620916A CN 200810128292 A CN200810128292 A CN 200810128292A CN 200810128292 A CN200810128292 A CN 200810128292A CN 101620916 A CN101620916 A CN 101620916A
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- coiling
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Abstract
The invention discloses a magnetic element comprising at least one coil and a magnetic conductor; wherein, the coil is composed of a winding coiled along the radial direction, and the thickness of the winding varies along with the distance from the central shaft of the coil; the magnetic conductor covers the coil.
Description
Technical field
The present invention is about a kind of magnetic element, particularly possesses high-quality-factor and dynamical magnetic element about a kind of.
Background technology
Magnetic element now has been widely used in the required inductor of power supply changeover device, transformer or noise filter.And the loss of magnetic element mainly comes from electric current by the resistance loss that wire rod caused and the loss of magnetic material.For power inductance or transformer, electric current is directly proportional with the resistance value of coil by the resistance loss power that coil caused.
Because the adjacent winding department of conventional coil thickness, width and coil must be used the thicker coiling in line footpath so traditional desire reduces coil resistance, and then cause coil dimension significantly to increase apart from all equating.So conventional coil has become the obstruction in the equipment miniaturization trend now.
Summary of the invention
Therefore, for addressing the above problem, the present invention proposes a kind of magnetic element, can be to possess high-quality-factor and dynamical inductance element, transformer or filter.
The present invention reintroduces a kind of magnetic element, so that suitable quality factor and usefulness to be provided in response to actual demand.
For this reason, the invention provides a kind of magnetic element, have an at least one coil and a magnetic conductor.This coil is made of the coiling of the volume of nest radially, and the thickness that should wind the line is along with apart from the distance of this coil central axe and different.This magnetic conductor coats this coil.
In the aforementioned magnetic element of the present invention, coiling thickness can be cumulative towards the outer ring from inner ring, also can be from inner ring towards the outer ring decrescence.
The present invention provides a kind of magnetic element again, has an at least one coil and a magnetic conductor.This coil is made of the coiling of the volume of nest radially, and this coiling inner ring and outer ring thickness differ from stage casing thickness.This magnetic conductor coats this coil.
In the aforementioned magnetic element of the present invention, coiling thickness can be cumulative more decrescence towards outer ring elder generation from inner ring, also can be earlier cumulative decrescence again towards the outer ring from inner ring.
The present invention also provides a kind of magnetic element, has an at least one line chart and a magnetic conductor.This coil is made of the coiling of the volume of nest radially, and the width of this coiling inner ring and outer ring differs from the stage casing width.This magnetic conductor coats this coil.
In the aforementioned magnetic element of the present invention, the coiling width can be cumulative more decrescence towards outer ring elder generation from inner ring, also can be earlier cumulative decrescence again towards the outer ring from inner ring.
In addition, coiling thickness can be along with apart from the distance of this coil central axe and different.Coiling thickness can be cumulative towards the outer ring from inner ring, also can be from inner ring towards the outer ring decrescence.In addition, this coiling inner ring and outer ring thickness also can differ from stage casing thickness.Coiling thickness can be cumulative more decrescence towards outer ring elder generation from inner ring, also can be earlier cumulative decrescence again towards the outer ring from inner ring.
The present invention also provides a kind of magnetic element, has an at least one coil and a magnetic conductor.This coil is made of the coiling that nest radially is rolled into a few, and this coiling adjacent inner coil and adjacent outer ring spacing differ from adjacent stage casing spacing.This magnetic conductor coats this coil.
In the aforementioned magnetic element of the present invention, aforementioned intervals can be cumulative more decrescence towards outer ring elder generation from inner ring, also can be earlier cumulative decrescence again towards the outer ring from inner ring.In addition, the width of inner ring coiling and outer ring coiling can differ from the stage casing width.Coiling thickness also can be along with apart from the distance of this coil central axe and different, even inner ring coiling and this outer ring coiling thickness also can differ from this stage casing thickness.
In the aforementioned magnetic element of the present invention, magnetic conductor comprises nickel-zinc ferrite (NiZn Ferrite), manganese-zinc ferrite (MnZn Ferrite) or contains the macromolecule of magnetic material.
Aforementioned magnetic element can directly place this magnetic conductor or permeability magnetic material with this coil and be shaped, and also can be shaped with the semiconductor forming mode.
In addition, magnetic conductor can be made of one first magnetic conductor and one second magnetic conductor.Between first magnetic conductor and second magnetic conductor, also can include adhesion coating.Adhesion coating can or contain the adhesion material of magnetic particle for epoxy resin, polyamide.The method that aforementioned first magnetic conductor and second magnetic conductor are bonded with each other can be welding process or applying method.
In magnetic element of the present invention, by coiling thickness cumulative or decrescence, the elder generation of coiling width cumulative decrescence or earlier the elder generation of cumulative decrescence again or adjacent winding department distance is cumulative more decrescence or mode such as earlier cumulative decrescence more again, can promote the quality factor of magnetic element easily, and then promote the usefulness of magnetic element.Even can be by the combination of the various embodiments described above, and the quality factor of adjusting magnetic element is to appropriate state, and then make magnetic element usefulness for best.
For above-mentioned and other purposes of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and conjunction with figs. are described in detail below:
Description of drawings
Figure 1A is depicted as the profile of one embodiment of the present invention magnetic element.
Figure 1B is depicted as the profile of another preferred embodiment magnetic element of the present invention.
Fig. 2 A is depicted as the profile of coil one example of the present invention.
Fig. 2 B is depicted as the profile of another example of coil of the present invention.
Fig. 2 C is depicted as the profile of another example of coil of the present invention.
Fig. 3 A is depicted as the profile of another preferred embodiment magnetic element of the present invention.
Fig. 3 B is depicted as the profile of another preferred embodiment magnetic element of the present invention.
Figure 4 shows that the partial top view of another example of coil of the present invention.
The main element symbol description
100,100a, 300a, 300b: magnetic element
102,202a, 202b, 202c, 302,400: coil
104,106,108,304: magnetic conductor
110: adhesion coating
112: insulating barrier
Embodiment
Figure 1A is depicted as the profile of the magnetic element 100 of one embodiment of the present invention.Magnetic element 100 has an at least one coil 102 and a magnetic conductor 104.Magnetic element 100 can be inductor, transformer, common-mode noise filter or differential mode noise filter.Magnetic element 100 can be applied to the DC-DC transformer, also can be applied to high frequency (RF) module.
This coil 102 is made of the coiling of the volume of nest radially, and should coiling inner ring thickness different with outer ring thickness, and more specifically, this thickness that winds the line is along with apart from the distance of these coil 102 central shafts and different.For example, coil 102 inner ring thickness are less than outer figure coiling thickness.The thickness that winds the line this moment can be cumulative towards the outer ring from inner ring.When coil 102 coiling inner ring thickness during less than outer ring thickness, the resistance value of outer ring part can be less than the resistance value of inner round portion, and then the loss when reducing electric current by aforementioned outer ring part.Cooperate coil 102 flux density distribution own this moment, can significantly reduce the direct current loss of coil 102 easily under the situation that does not increase magnetic element 100 volumes, even significantly promote the quality factor and the usefulness of magnetic element.
Aforementioned magnetic element 100 can be directly will place magnetic conductor or permeability magnetic material to be shaped by the coil of the single coiling winding shaping of tool different-thickness, also can be shaped with the semiconductor forming mode.The aforesaid semiconductor forming mode is to form a metal level as coil 102 on the magnetic conductor 106 with corresponding coil thickness pattern.Afterwards, on magnetic conductor 106, cover another magnetic conductor 108 to constitute the magnetic conductor 104 that coats coil 102.In addition, can look actual needs between two magnetic conductors 106 and 108 and form an adhesion coating 110, with firm engagement magnetic conductor 106 and 108 more.Magnetic conductor 106,108 also can first presintering be configured as a crude green body, treats to sinter complete magnetic conductor 104 again into after magnetic conductor 106,108 is fitted mutually.In addition, also can shown in Figure 1B, look actual needs and between the two adjacent rings coiling, form insulating barrier 112.
In addition, also can change the mode of coil-winding varied in thickness in response to actual demand, the coil 202a coiling inner ring thickness shown in Fig. 2 A is greater than outer ring thickness; Coil 202b coiling inner ring shown in Fig. 2 B and outer ring thickness are less than stage casing thickness; Coil 202c coiling inner ring shown in Fig. 2 C and outer ring thickness are greater than stage casing thickness; Coil-winding thickness from inner ring towards the outer ring decrescence; Coil-winding thickness is cumulative more decrescence towards outer ring elder generation from inner ring; Or coil-winding thickness is earlier cumulative decrescence again towards the outer ring from inner ring.In addition, in aforementioned variation, the adjacent coiling thickness of coil can be identical, also can be different.
In addition, please refer to shown in Fig. 3 A, magnetic element 300a also can be formed by 2 magnetic conductor 106 corresponding joints that have coil 102 respectively.The method that aforementioned two magnetic conductors 106 are bonded with each other can or be used the applying method of adhesion coating 110 with welding process.In addition, please refer to shown in Fig. 3 B, magnetic element 300b also can be directly coats the vicissitudinous coil 302 of thickness with permeability magnetic material, again consolidation, sclerosis, sintering or solidify that aforementioned permeability magnetic material forms magnetic conductor 304 and the making of finishing magnetic element 300b.
In addition, the coil form of magnetic element of the present invention does not exceed with above-mentioned, can change coil 400 as shown in Figure 4 into yet.The radially nest that constitutes coil 400 is rolled in a few the coiling, and coiling adjacent inner coil and adjacent outer ring spacing differ from adjacent stage casing spacing.Coil 400 coiling adjacent inner coil and adjacent outer ring spacing can be greater than adjacent stage casing spacings; Adjacent inner coil and adjacent outer ring spacing can be less than adjacent stage casing spacings; Earlier cumulative decrescence again from inner ring towards the outer ring; Or it is cumulative more decrescence towards outer ring elder generation from inner ring.In addition, in aforementioned variation, coil two adjacent coiling spacings can be identical, also can be different.
In addition, coil 400 coiling adjacent inner coil and adjacent outer ring spacing can also reduce A.C.power loss greater than adjacent stage casing spacing, promote quality factor, and then promote the usefulness of magnetic element.
In addition, coil 400 also can differ from the form of stage casing width for wind the line inner ring and outer ring width.Aforementioned coil 400 coiling width can be inner ring and outer ring coiling width greater than the stage casing width that winds the line; Inner ring and outer ring coiling width is less than the stage casing width that winds the line; Earlier cumulative decrescence again from inner ring towards the outer ring; Or it is cumulative more decrescence towards outer ring elder generation from inner ring.In addition, in aforementioned variation, coil two adjacent coiling width can be identical, also can be different.
In addition, coil 400 coiling inner rings and outer ring width can also reduce A.C.power loss less than the stage casing width, promote quality factor, and then promote the usefulness of magnetic element.
In addition, under the situation that aforementioned coil-winding change width and/or adjacent turn spacing change, the thickness of coil 400 is can be entirely section identical, also the variation pattern shown in coil 102,202a, 202b, 202c or other examples as described above.The materials of coil 400 etc. and aforementioned coil 102,202a, 202b, 302 identical do not repeat them here.
In addition, each coil of the present invention is rolled up a few by the nest that winds the line radially and is formed, and each individual pen can be same thickness and/or same widths, and the thickness of adjacent turn, width and spacing are then according to the described variation of the various embodiments described above.
In addition, magnetic element of the present invention can be according to actual demand, with uses that mutually combines such as the described coil-winding thickness of the various embodiments described above, width and adjacent spacings, to obtain meeting the effect of demand.
Though the present invention with preferred embodiment openly as above; right its is not that any those skilled in the art are not in breaking away from spirit of the present invention and model circle in order to qualification the present invention; when being used for a variety of modifications and variations, therefore protection model circle of the present invention is as the criterion when looking claims person of defining.
Claims (25)
1. magnetic element comprises:
At least one coil be made of the coiling of the volume of nest radially, and this coiling thickness of inner ring differs from this coiling thickness of outer ring; And
One magnetic conductor coats this coil.
2. magnetic element according to claim 1, wherein this coiling thickness of inner ring and outer ring differs from this coiling thickness in stage casing; Thickness that perhaps should coiling is along with apart from the distance of this coil central axe and different.
3. magnetic element according to claim 1, wherein this coiling width of inner ring and outer ring differs from this coiling width in stage casing.
4. magnetic element according to claim 1, wherein this of inner ring and outer ring adjacent spacing that winds the line differs from this adjacent spacing that winds the line in stage casing.
5. magnetic element comprises:
At least one coil be made of the coiling of the volume of nest radially, and this coiling thickness of inner ring and outer ring differs from this coiling thickness in stage casing; And
One magnetic conductor coats this coil.
6. magnetic element comprises:
At least one coil be made of the coiling of the volume of nest radially, and this coiling width of inner ring and outer ring differs from this coiling width in stage casing; And
One magnetic conductor coats this coil.
7. magnetic element according to claim 6, wherein this coiling thickness of inner ring and outer ring differs from this coiling thickness in stage casing; Thickness that perhaps should coiling is along with apart from the distance of this coil central axe and different.
8. magnetic element according to claim 6, wherein this of inner ring and outer ring adjacent spacing that winds the line differs from this adjacent spacing that winds the line in stage casing.
9. magnetic element comprises:
At least one coil be made of the coiling of the volume of nest radially, and this adjacent spacing that winds the line of inner ring and outer ring differs from this adjacent spacing that winds the line in stage casing; And
One magnetic conductor coats this coil.
10. magnetic element according to claim 9, wherein this coiling thickness of inner ring and outer ring differs from this coiling thickness in stage casing; Thickness that perhaps should coiling is along with apart from the distance of this coil central axe and different.
11. to 10 arbitrary described magnetic elements, wherein this coiling thickness is cumulative or decrescence towards the outer ring from inner ring according to claim 1.
12. to 10 arbitrary described magnetic elements, wherein the thickness of this adjacent coiling is identical or different according to claim 1.
13. according to claim 1 to 10 arbitrary described magnetic elements, wherein the thickness of this coiling be from inner ring towards the outer ring earlier cumulative more decrescence or earlier cumulative decrescence again.
14. according to claim 1 to 10 arbitrary described magnetic elements, wherein the width of this coiling be from inner ring towards the outer ring earlier cumulative more decrescence or earlier cumulative decrescence again.
15. to 10 arbitrary described magnetic elements, wherein the width of this adjacent coiling is identical or different according to claim 1.
16. according to claim 1 to 10 arbitrary described magnetic elements, wherein the spacing of this adjacent coiling be from inner ring towards the outer ring earlier cumulative more decrescence or earlier cumulative decrescence again.
17. to 10 arbitrary described magnetic elements, wherein the spacing of two these adjacent coilings is identical or different according to claim 1.
18. to 10 arbitrary described magnetic elements, wherein this magnetic conductor comprises nickel-zinc ferrite, manganese-zinc ferrite or contains the macromolecule of magnetic material according to claim 1.
19. to 10 arbitrary described magnetic elements, wherein this coil directly places this magnetic conductor or permeability magnetic material to be shaped according to claim 1, or forms forming a metal level on should the magnetic conductor of coil pattern having.
20. according to claim 1 to 10 arbitrary described magnetic elements, wherein this magnetic conductor is made of one first magnetic conductor and one second magnetic conductor, also comprise an adhesion coating between this first magnetic conductor and this second magnetic conductor, this adhesion coating is epoxy resin, polyamide or the adhesion material that contains magnetic particle.
21. to 10 arbitrary described magnetic elements, wherein this magnetic conductor is made of one first magnetic conductor and one second magnetic conductor according to claim 1, this first magnetic conductor and this second magnetic conductor are bonded with each other with welding or laminating type; Or this first magnetic conductor of thermal sintering and this second magnetic conductor are a crude green body in advance, treat this first magnetic conductor and this second magnetic conductor fit mutually after thermal sintering again.
22. to 10 arbitrary described magnetic elements, it also comprises at least one insulating barrier according to claim 1, is formed between the two adjacent rings coiling of this coil.
23. to 10 arbitrary described magnetic elements, wherein each the individual pen thickness or the width of this coil are identical according to claim 1.
24. to 10 arbitrary described magnetic elements, it is inductor, transformer, common-mode noise filter or differential mode noise filter according to claim 1.
25. to 10 arbitrary described magnetic elements, it is applied to DC-DC transformer or high frequency (RF) module according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810128292A CN101620916A (en) | 2008-07-04 | 2008-07-04 | Magnetic element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810128292A CN101620916A (en) | 2008-07-04 | 2008-07-04 | Magnetic element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101620916A true CN101620916A (en) | 2010-01-06 |
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|---|---|---|---|
| CN200810128292A Pending CN101620916A (en) | 2008-07-04 | 2008-07-04 | Magnetic element |
Country Status (1)
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| CN (1) | CN101620916A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104980003A (en) * | 2014-04-01 | 2015-10-14 | 台达电子企业管理（上海）有限公司 | Power module and POL power module |
| CN105097187A (en) * | 2014-05-21 | 2015-11-25 | 三星电机株式会社 | Chip electronic component and board for mounting thereof |
| CN105826050A (en) * | 2015-01-28 | 2016-08-03 | 三星电机株式会社 | Electronic component and manufacturing method thereof |
| CN106548850A (en) * | 2015-09-23 | 2017-03-29 | 台达电子企业管理（上海）有限公司 | Magnet assembly |
| CN105321655B (en) * | 2014-06-02 | 2017-09-01 | 三星电机株式会社 | Chip electronic device and the plate for installing chip electronic device |
| CN109961938A (en) * | 2017-12-26 | 2019-07-02 | 三星电机株式会社 | Coil block and its manufacturing method |
| CN110047646A (en) * | 2018-01-17 | 2019-07-23 | 三星电机株式会社 | Coil block and its manufacturing method |
-
2008
- 2008-07-04 CN CN200810128292A patent/CN101620916A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104980003A (en) * | 2014-04-01 | 2015-10-14 | 台达电子企业管理（上海）有限公司 | Power module and POL power module |
| US9943000B2 (en) | 2014-04-01 | 2018-04-10 | Delta Electronics (Shanghai) Co., Ltd | Power module and point-of-load (POL) power module |
| CN105097187A (en) * | 2014-05-21 | 2015-11-25 | 三星电机株式会社 | Chip electronic component and board for mounting thereof |
| US20150340149A1 (en) * | 2014-05-21 | 2015-11-26 | Samsung Electro-Mechanics Co., Ltd. | Chip electronic component and board for mounting thereof |
| TWI603352B (en) * | 2014-05-21 | 2017-10-21 | 三星電機股份有限公司 | Chip electronic component and board for mounting thereof |
| CN105097187B (en) * | 2014-05-21 | 2018-03-13 | 三星电机株式会社 | Chip electronic component and for installing the plate of the chip electronic component |
| US10109409B2 (en) * | 2014-05-21 | 2018-10-23 | Samsung Electro-Mechanics Co., Ltd. | Chip electronic component and board for mounting thereof |
| CN105321655B (en) * | 2014-06-02 | 2017-09-01 | 三星电机株式会社 | Chip electronic device and the plate for installing chip electronic device |
| US10141099B2 (en) | 2015-01-28 | 2018-11-27 | Samsung Electro-Mechanics Co., Ltd. | Electronic component and manufacturing method thereof |
| CN105826050A (en) * | 2015-01-28 | 2016-08-03 | 三星电机株式会社 | Electronic component and manufacturing method thereof |
| CN106548850A (en) * | 2015-09-23 | 2017-03-29 | 台达电子企业管理（上海）有限公司 | Magnet assembly |
| CN109961938A (en) * | 2017-12-26 | 2019-07-02 | 三星电机株式会社 | Coil block and its manufacturing method |
| CN109961938B (en) * | 2017-12-26 | 2021-04-23 | 三星电机株式会社 | Coil assembly and method of manufacturing the same |
| US11133125B2 (en) | 2017-12-26 | 2021-09-28 | Samsung Electro-Mechanics Co., Ltd. | Coil component and method of manufacturing the same |
| CN110047646A (en) * | 2018-01-17 | 2019-07-23 | 三星电机株式会社 | Coil block and its manufacturing method |
| US11217380B2 (en) | 2018-01-17 | 2022-01-04 | Samsung Electro-Mechanics Co., Ltd. | Coil component and manufacturing method thereof |
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Open date: 20100106 |