CN104134526A - Annular coil structure - Google Patents
Annular coil structure Download PDFInfo
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- CN104134526A CN104134526A CN201410296283.9A CN201410296283A CN104134526A CN 104134526 A CN104134526 A CN 104134526A CN 201410296283 A CN201410296283 A CN 201410296283A CN 104134526 A CN104134526 A CN 104134526A
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- conduction bar
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Abstract
The invention discloses an annular coil structure and a tailless emitter which comprises the annular coil structure, a sensor and a magnetic element. The annular coil structure is characterized by comprising an annular coil (1) and a magnetic conducting strip, wherein the magnetic conducting strip comprises first magnetic conducting strips (2) and second magnetic conducting strips (3) which are transversely arranged below the annular coil (1), and third magnetic conducting strips (4) vertically arranged in an annular region in the center of the annular coil (1); the first magnetic conducting strips (2) are contacted with the third magnetic conducting strips (4); a fence formed by the first magnetic conducting strips (2), the second magnetic conducting strips (3) and the third magnetic conducting strips (4) surrounds the middle and the bottom of the annular coil; a safe region (5) with relatively weak magnetic field intensity is formed in the center of the coil; and the sensor and the magnetic element are arranged in the safe region (5). With the adoption of the annular coil structure, the magnetic field intensity in the annular coil (1) can be reduced; and devices such as the sensor and the magnetic element are arranged in the annular coil (1), so that requirements of the magnetic devices for the magnetic field intensity can be met, the problems of eddy current loss, demagnetization and the like caused by a high-intensity magnetic field are improved, and a space of the coil is fully used.
Description
Technical field
The present invention relates to wireless power transmission technology, relate in particular to a kind of toroidal coil structure.
Background technology
Around the coil of wireless power transmission device, conventionally need to place some magnetic elements, sensor, and wireless power transmission device when work, its coil produces stronger magnetic field around, high-intensity magnetic field can bring the problems such as eddy current loss, magnetic material demagnetization, affect the temperature rise that performance and the life span, particularly eddy current loss of device cause, have larger potential safety hazard.Conventionally, coil can adopt the winding method that is laid into a plane, also can adopt annular winding method.The coil magnetic field of tiling coiling is evenly distributed, and coil upper area magnetic field intensity is higher, and hub of a spool magnetic field intensity is relatively the highest, considers the impacts such as eddy current effect, demagnetization, is not suitable for placing sensor magnetic elements at coil upper area or near zone.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of toroidal coil structure, can reduce the magnetic field intensity of loop coil inside, forms a magnetic field intensity relatively toroidal coil structure and the anury reflector of weak safety zone in coil centre.
For achieving the above object, technical scheme of the present invention is achieved in that
A toroidal coil structure, comprises loop coil, magnetic conduction bar; Wherein, described magnetic conduction bar comprises and is horizontally set at the first magnetic conduction bar, the second magnetic conduction bar of toroidal below and the 3rd magnetic conduction bar that is vertically arranged at loop coil centre annular region, the first magnetic conduction bar contacts with the 3rd magnetic conduction bar, the fence that the first magnetic conduction bar, the second magnetic conduction bar, the 3rd magnetic conduction bar form surrounds toroidal central authorities and bottom, forms the relatively weak safety zone of a magnetic field intensity in coil centre.
Optimally, described the first magnetic conduction bar, the second magnetic conduction bar be take toroidal central point and are arranged radially as axle center.
Optimally, described the second magnetic conduction bar is arranged in the neutral gear of the first magnetic conduction bar.
Optimally, described safety zone 5, its diameter is Ds, Df is the internal diameter of the fence of described the 3rd magnetic conduction bar 4 formation, and Dc is the internal diameter of loop coil 1, and the pass of Dc, Df and Ds is: Df=k (Dc-Ds)+Ds, k is constant factor, k value (0.4,0.8).
Optimally, described magnetic conduction bar is ferrite.
The technical scheme of the anury reflector of the technical program is such: it comprises toroidal coil structure, transducer, magnetic element, and toroidal coil structure comprises loop coil, magnetic conduction bar; Wherein, described magnetic conduction bar comprises and is horizontally set at the first magnetic conduction bar, the second magnetic conduction bar of toroidal below and the 3rd magnetic conduction bar that is vertically arranged at loop coil centre annular region, the first magnetic conduction bar contacts with the 3rd magnetic conduction bar, the fence that the first magnetic conduction bar, the second magnetic conduction bar, the 3rd magnetic conduction bar form surrounds toroidal central authorities and bottom, in coil centre, form the relatively weak safety zone of a magnetic field intensity, transducer, magnetic element are arranged in safety zone.
Optimally, described the first magnetic conduction bar, the second magnetic conduction bar be take toroidal central point and are arranged radially as axle center.
Optimally, described the second magnetic conduction bar is arranged in the neutral gear of the first magnetic conduction bar.
Optimally, described safety zone 5, its diameter is Ds, Df is the internal diameter of the fence of described the 3rd magnetic conduction bar 4 formation, and Dc is the internal diameter of loop coil 1, and the pass of Dc, Df and Ds is: Df=k (Dc-Ds)+Ds, k is constant factor, k value (0.4,0.8).
Optimally, described magnetic conduction bar is ferrite.
Described in the technical program, magnetic conduction bar comprises the first magnetic conduction bar that is horizontally set at toroidal below, the second magnetic conduction bar and the 3rd magnetic conduction bar that is vertically arranged at loop coil centre annular region, the first magnetic conduction bar contacts with the 3rd magnetic conduction bar, the first magnetic conduction bar, the second magnetic conduction bar, the fence that the 3rd magnetic conduction bar forms surrounds toroidal central authorities and bottom, in coil centre, form the relatively weak safety zone of a magnetic field intensity, transducer, magnetic element is arranged in safety zone, can reduce to greatest extent magnetic field to transducer like this, the interference of the devices such as magnetic element, improved the temperature rise impact that the eddy current loss that causes because of high-intensity magnetic field is brought.
Described in the technical program, the first magnetic conduction bar, the second magnetic conduction bar be take toroidal central point and are arranged radially as axle center, described the second magnetic conduction bar is arranged in the neutral gear of the first magnetic conduction bar, the fence that this arrangement mode forms can surround toroidal central authorities and bottom to greatest extent, makes the magnetic field intensity of safety zone lower.
Safety zone 5 described in the technical program, its diameter is Ds, Df is the internal diameter of the fence of described the 3rd magnetic conduction bar (4) formation, Dc is the internal diameter of loop coil (1), the pass of Dc, Df and Ds is: Df=k (Dc-Ds)+Ds, k is constant factor, k value (0.4,0.8), above-mentioned formula has been determined the relation of safety zone and fence internal diameter and internal coil diameter, be actually the design route of the technical program, the toroidal coil structure realizing according to the formula of the technical program is more reasonable, and the space of safety zone is also more reasonable.
The devices such as transducer, magnetic elements are placed in this safety zone, its service behaviour can not be subject to the impact of the strong electromagnetic environment of coil generation, thereby in the service behaviour that does not affect the devices such as transducer, magnetic elements, when improving the problems such as eddy current loss that high-intensity magnetic field brings, demagnetization, make full use of the space of coil, can, in retainer member performance, save the space that device is placed.
Accompanying drawing explanation
Fig. 1 is toroidal coil structure longitudinal sectional view of the present invention;
Fig. 2 is toroidal coil structure schematic perspective view of the present invention;
Fig. 3 is coil longitudinal cross-section schematic diagram;
Fig. 4 is coil vertical view.
1-loop coil, 2-the first magnetic conduction bar, 3-the second magnetic conduction bar, 4-the 3rd magnetic conduction bar, 5-safety zone.
Embodiment
Embodiment 1:
Below in conjunction with accompanying drawing and embodiments of the invention, toroidal coil structure of the present invention is described in further detail.
The toroidal coil structure of the present embodiment comprises loop coil 1, magnetic conduction bar; Wherein, described magnetic conduction bar comprises and is horizontally set at the first magnetic conduction bar 2, the second magnetic conduction bar 3 of toroidal below and the 3rd magnetic conduction bar 4 that is vertically arranged at loop coil centre annular region, the first magnetic conduction bar 2 contacts with the 3rd magnetic conduction bar 4, the fence that the first magnetic conduction bar 2, the second magnetic conduction bar 3, the 3rd magnetic conduction bar 4 form surrounds central authorities and the bottom of loop coil 1, forms the relatively weak safety zone 5 of a magnetic field intensity in coil centre.Described the first magnetic conduction bar 2, the second magnetic conduction bar 3 be take the central point of loop coil 1 and are arranged radially as axle center.Described the second magnetic conduction bar 3 is arranged in the neutral gear of the first magnetic conduction bar 2.Described safety zone 5, its diameter is Ds, and Df is the internal diameter of the fence of described the 3rd magnetic conduction bar 4 formation, and Dc is the internal diameter of loop coil 1.The pass of Dc, Df and Ds is: Df=k (Dc-Ds)+Ds, k is constant factor, k value (0.4,0.8).
The inside diameter D c of the loop coil 2 of the toroidal coil structure of the present embodiment is 90mm, inductance value is the coil of 80uH, it is 10A electric current that coil midstream is crossed 20kHz effective value, magnetic conduction bar initial permeability is 2000, for obtaining the safety zone that diameter Ds is 20mm, getting k value is 0.4, and the diameter Df of the fence that now magnetic stripe 4 forms is about 48mm.
Embodiment 2:
The difference of the present embodiment and embodiment 1 is, the toroidal inside diameter D c of the toroidal coil structure of the present embodiment is 90mm, inductance value is the coil of 80uH, it is 30A electric current that coil midstream is crossed 20kHz effective value, magnetic conduction bar initial permeability is, for obtaining the safety zone that diameter Ds is 20mm, getting k value is 0.8, and the diameter Df of the fence that now magnetic stripe 4 forms is about 76mm.
Embodiment 3:
The difference of the present embodiment and embodiment 1 is, the toroidal inside diameter D c of the toroidal coil structure of the present embodiment is 90mm, inductance value is the coil of 80uH, it is 15A electric current that coil midstream is crossed 20kHz effective value, magnetic conduction bar initial permeability is, for obtaining the safety zone that diameter Ds is 20mm, getting k value is 0.5, and the diameter Df of the fence that now magnetic stripe 4 forms is about 55mm.
The present invention can design coil in the manner described above, in safety zone in loop coil, can place transducer, magnetic elements, coil etc., meet compared with on the basis of low-intensity magnetic field demand, can further make full use of toroidal inner space, expand the range of application of coil.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.
Claims (10)
1. a toroidal coil structure, is characterized in that, comprises loop coil (1), magnetic conduction bar; Wherein, described magnetic conduction bar comprises the first magnetic conduction bar (2), the second magnetic conduction bar (3) of the below that is horizontally set at loop coil (1) and the 3rd magnetic conduction bar (4) that is vertically arranged at loop coil (1) centre annular region, the first magnetic conduction bar (2) contacts with the 3rd magnetic conduction bar (4), the fence that the first magnetic conduction bar (2), the second magnetic conduction bar (3), the 3rd magnetic conduction bar (4) form surrounds toroidal central authorities and bottom, forms the relatively weak safety zone (5) of a magnetic field intensity in coil centre.
2. toroidal coil structure according to claim 1, is characterized in that, described the first magnetic conduction bar (2), the second magnetic conduction bar (3) be take the central point of loop coil (1) and arranged radially as axle center.
3. toroidal coil structure according to claim 2, is characterized in that, described the second magnetic conduction bar (3) is arranged in the neutral gear of the first magnetic conduction bar.
4. toroidal coil structure according to claim 1, it is characterized in that, described safety zone 5, its diameter is Ds, and Df is the internal diameter of the fence of described the 3rd magnetic conduction bar (4) formation, and Dc is the internal diameter of loop coil (1), the pass of Dc, Df and Ds is: Df=k (Dc-Ds)+Ds, k is constant factor, k value (0.4,0.8).
5. toroidal coil structure according to claim 1, is characterized in that, described magnetic conduction bar is ferrite.
6. an anury reflector, it comprises toroidal coil structure, transducer, magnetic element, it is characterized in that: toroidal coil structure comprises loop coil (1), magnetic conduction bar, wherein, described magnetic conduction bar comprises the first magnetic conduction bar (2) of the below that is horizontally set at loop coil (1), the second magnetic conduction bar (3) and the 3rd magnetic conduction bar (4) that is vertically arranged at loop coil (1) centre annular region, the first magnetic conduction bar (2) contacts with the 3rd magnetic conduction bar (4), the first magnetic conduction bar (2), the second magnetic conduction bar (3), the fence that the 3rd magnetic conduction bar (4) forms surrounds toroidal central authorities and bottom, in coil centre, form the relatively weak safety zone (5) of a magnetic field intensity, transducer, magnetic element is arranged in safety zone (5).
7. anury reflector according to claim 6, is characterized in that, described the first magnetic conduction bar (2), the second magnetic conduction bar (3) be take the central point of loop coil (1) and arranged radially as axle center.
8. anury reflector according to claim 7, is characterized in that, described the second magnetic conduction bar (3) is arranged in the neutral gear of the first magnetic conduction bar (2).
9. anury reflector according to claim 6, it is characterized in that, described safety zone 5, its diameter is Ds, and Df is the internal diameter of the fence of described the 3rd magnetic conduction bar (4) formation, and Dc is the internal diameter of loop coil (1), the pass of Dc, Df and Ds is: Df=k (Dc-Ds)+Ds, k is constant factor, k value (0.4,0.8).
10. anury reflector according to claim 6, is characterized in that, described magnetic conduction bar is ferrite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410296283.9A CN104134526B (en) | 2014-06-27 | 2014-06-27 | A kind of toroidal coil structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410296283.9A CN104134526B (en) | 2014-06-27 | 2014-06-27 | A kind of toroidal coil structure |
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| Publication Number | Publication Date |
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| CN104134526A true CN104134526A (en) | 2014-11-05 |
| CN104134526B CN104134526B (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410296283.9A Active CN104134526B (en) | 2014-06-27 | 2014-06-27 | A kind of toroidal coil structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109616278A (en) * | 2019-01-28 | 2019-04-12 | 玉林师范学院 | A kind of intelligent nano powder demagnetizer and demagnetization method |
| CN110932414A (en) * | 2019-11-19 | 2020-03-27 | 歌尔股份有限公司 | Transmitting device, receiving device and charging assembly |
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| CN101525997A (en) * | 2008-03-06 | 2009-09-09 | 中国石油化工股份有限公司 | Downhole signal transmitting device for electromagnetic measurement while drilling system and transmitting method thereof |
| CN201947065U (en) * | 2010-10-18 | 2011-08-24 | 陈庭勋 | Proximate wireless power transmission device structure |
| CN102518664A (en) * | 2011-12-07 | 2012-06-27 | 清华大学 | Device used for reducing ring vortex of axial electromagnetic bearing |
| CN103105596A (en) * | 2011-11-10 | 2013-05-15 | 三星电子株式会社 | Wireless radio frequency coil, method of controlling the coil, and magnetic resonance imaging apparatus using the coil |
| US20140070659A1 (en) * | 2012-09-07 | 2014-03-13 | Samsung Electro-Mechanics Co., Ltd. | Stator assembly for motor |
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2014
- 2014-06-27 CN CN201410296283.9A patent/CN104134526B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101525997A (en) * | 2008-03-06 | 2009-09-09 | 中国石油化工股份有限公司 | Downhole signal transmitting device for electromagnetic measurement while drilling system and transmitting method thereof |
| CN201947065U (en) * | 2010-10-18 | 2011-08-24 | 陈庭勋 | Proximate wireless power transmission device structure |
| CN103105596A (en) * | 2011-11-10 | 2013-05-15 | 三星电子株式会社 | Wireless radio frequency coil, method of controlling the coil, and magnetic resonance imaging apparatus using the coil |
| CN102518664A (en) * | 2011-12-07 | 2012-06-27 | 清华大学 | Device used for reducing ring vortex of axial electromagnetic bearing |
| US20140070659A1 (en) * | 2012-09-07 | 2014-03-13 | Samsung Electro-Mechanics Co., Ltd. | Stator assembly for motor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109616278A (en) * | 2019-01-28 | 2019-04-12 | 玉林师范学院 | A kind of intelligent nano powder demagnetizer and demagnetization method |
| CN110932414A (en) * | 2019-11-19 | 2020-03-27 | 歌尔股份有限公司 | Transmitting device, receiving device and charging assembly |
| WO2021098217A1 (en) * | 2019-11-19 | 2021-05-27 | 歌尔股份有限公司 | Transmitting device, receiving device, and charging assembly |
| CN110932414B (en) * | 2019-11-19 | 2021-11-16 | 歌尔股份有限公司 | Transmitting device, receiving device and charging assembly |
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| Publication number | Publication date |
|---|---|
| CN104134526B (en) | 2016-08-24 |
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Effective date of registration: 20220824 Address after: Room 201, Building A, No. 1, Qianwan 1st Road, Qianhai Shenzhen-Hong Kong Cooperation Zone, Shenzhen, Guangdong, 518102 (in Shenzhen Qianhai Commercial Secretary Co., Ltd.) Patentee after: SHENZHEN QIANHAI ZHENTAI COMMUNICATION TECHNOLOGY CO.,LTD. Address before: 266101 B2, 5th floor, block B, No.1 keyuanwei 1st Road, Laoshan District, Qingdao City, Shandong Province Patentee before: QINGDAO ZHONGHAI HUIZHI ENERGY TECHNOLOGY Co.,Ltd. |