CN207782492U - A kind of wireless power transmission coil with impedance matching function - Google Patents
A kind of wireless power transmission coil with impedance matching function Download PDFInfo
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- CN207782492U CN207782492U CN201721834166.9U CN201721834166U CN207782492U CN 207782492 U CN207782492 U CN 207782492U CN 201721834166 U CN201721834166 U CN 201721834166U CN 207782492 U CN207782492 U CN 207782492U
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- power transmission
- wireless power
- spiral winding
- impedance
- matching
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 36
- 238000004804 winding Methods 0.000 claims abstract description 37
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 7
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Abstract
The utility model discloses a kind of novel wireless power transmission coil with impedance matching function, belong to wireless power transmission and conversion scope, the matching that output impedance or load impedance to wireless power transmission power supply may be implemented has broad application prospects to carry out efficient wireless power transmission.The utility model solve the problems, such as conventional wireless transmission of electricity coil impedance it is nonadjustable, can flexible modulation coil input impedance, mainly include：Spiral winding (1)；Coaxial input (2)；Matching stub (3)；Short-circuited conducting sleeve (4).The utility model can be used as transmitting coil or receiving coil in radio energy transmission system, have many advantages, such as that input impedance is adjustable, matching is flexible, easy to operate.
Description
Technical field
The utility model originally belongs to wireless power transmission and conversion art, is mainly used in magnetic resonance wireless power transmission system
In system, it is related to a kind of resonance coil of the wireless power transmission with impedance matching function.
Background technology
The application of wireless power transmission technology, the method for having expanded electrical energy transportation are reduced to a certain extent to wired
The dependence of power supply mode, so as to avoid in some special occasions, such as mining site, seabed etc., safety when conventional wires are powered
Problem has higher flexibility and safety.Magnetic resonance coupling wireless power transmission technology is as the substantially square of wireless power transmission
One of formula, from after being put forward for the first time the researcher of Massachusetts Institute Technology in 2007, because the technology is in efficiency of transmission, transmission work(
Clear superiority in rate and transmission range, has obtained the extensive concern of domestic and international researcher, and application field is also gradually expanded
Electric vehicle, implantable medical device and portable electronic product etc. are arrived.
Magnetic resonance coupling wireless power transmission technology has identical resonance frequency and high quality factor using two or more
Electromagnetic system, by work in specific frequency inductance and capacitance coupling generate EMR electromagnetic resonance, high-frequency electrical energy is humorous
Shake coil working near-field region occur large scale exchange and be supported absorption.Bridge of the resonance coil as wireless power transmission
Beam plays a crucial role in the entire system, determines the distance of energy transmission, the performances such as power and efficiency ginseng
Number, the resonance coil of function admirable are conducive to improve system performance.
Currently, resonance coil mostly uses double-end feed mode, impedance remains unchanged under fixed frequency, and impedance matching needs
It to be realized by other means, such as add additional impedance matching network or increase impedance matching coil, matching and the side adjusted
Method complexity is high, and the working efficiency for being unfavorable for wireless power transmission is promoted.
Utility model content
In view of this, the utility model proposes a kind of wireless power transmission coil with impedance matching function, input impedance
It is adjustable, can accurate match high frequency electric source output impedance or load impedance, to realize high efficiency wireless power transmission.
In order to achieve the above objectives, the technical solution of the utility model is realized in：
A kind of wireless power transmission coil with impedance matching function, mainly include spiral winding 1, coaxial input 2,
With bar 3 and short-circuited conducting sleeve 4；Coaxial input 2 is used as high-frequency electrical energy feed terminal, is located at 1 center of spiral winding, and coaxial line is defeated
The external shroud for entering end 2 is connected with spiral winding 1；Matching stub 3 is connected with the core wire of coaxial input 2 and to be short-circuited ring 4 short
Road is connected to spiral winding 1, and the input impedance of spiral winding 1 is adjusted by mobile short-circuited conducting sleeve 4.
Further, the whole cylindrical helical structure of the spiral winding 1, total length are half corresponding to working frequency
Wavelength.
Further, the matching stub 3 is arc-shaped, and the center of circle of circle is overlapped with the center of spiral winding 1 where matching stub 3.
Further, 3 total length of the matching stub is the one third arc length of circle where matching stub 3.
Further, the matching stub 3 is located at 1 inside of spiral winding, with spiral winding 1 at a distance of 8cm~10cm.
Further, the short-circuited conducting sleeve 4 is made of copper sheet, is moved between matching stub 3 and spiral winding 1.
Compared with the existing technology, a kind of wireless power transmission coil with impedance matching function described in the utility model has
Following advantage：
The utility model input impedance can be adjusted by the short-circuited conducting sleeve between shifted matching bar and spiral winding, can
Accurate match high frequency electric source output impedance or load impedance, make high-frequency electrical energy efficiently transfer out.The utility model can be used as
Transmitting coil in magnetic resonance coupling radio energy transmission system or receiving coil, matching is flexible, and adjusting method is easy, effectively carries
The high efficiency of wireless power transmission.
Description of the drawings
Fig. 1 is the overall structure figure of the utility model embodiment；
Fig. 2 is the input terminal detail view of the utility model embodiment；
Wherein：
1：Spiral winding；2：Coaxial input；3：Matching stub；4：Short-circuited conducting sleeve.
Specific implementation mode
It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can
To be combined with each other.
The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
As shown in Figure 1, a kind of novel wireless power transmission coil with impedance matching function of the utility model, includes：
Spiral winding 1, coaxial input 2, matching stub 3, short-circuited conducting sleeve 4.The whole cylindrical helical structure of spiral winding 1, it is described
Coaxial input 2 is the feed terminal of high-frequency electrical energy, is located at the center of spiral winding；
The spiral winding radius is 30cm, it is 8mm by outer diameter, and internal diameter is made of the copper tube of 6mm, and copper tube is total
Length is the half-wavelength corresponding to working frequency.
The matching stub 3 is arc-shaped, is located at 1 inside of spiral winding, with spiral winding 1 where 10cm, matching stub 3
The round center of circle is overlapped with the center of spiral winding 1.Matching stub 3 is 8mm by outer diameter, and internal diameter is made of the copper tube of 6mm, copper tube
Total length is the one third arc length of circle where matching stub 3.
Matching stub 3 is arc-shaped, and center of circle of circle is overlapped with the center of spiral winding 1 where it, and design is convenient for short in this way
Road ring 4 moves between matching stub 3 and spiral winding 1；The length of matching stub 3 is chosen mainly due to needing in spiral winding 1
Upper searching optimal match point, experiment show that the length of the matching stub 3 designed in this way meets the searching of optimal match point enough；Matching
The position of bar 3 is located on the inside of spiral winding, is primarily due to reduction spiral winding as far as possible and is taken up space, and facilitates short-circuited conducting sleeve
4 movement.
As shown in Fig. 2, the center of spiral winding 1 is connected with coaxial line external shroud, the core wire phase of matching stub 3 and coaxial line
Connect and be short-circuited the short circuit of ring 4, by wide 10mm, the copper sheet of thick 1mm is made the short-circuited conducting sleeve 4, it is by matching stub 3 and spiral winding
1 is connected, and can be moved between matching stub 3 and spiral winding 1.The input impedance of coil can be adjusted by mobile short-circuited conducting sleeve 4
Section to be matched with the output impedance of high frequency electric source or load impedance, and is fed into the high-frequency electrical energy on coil and launches.
A kind of novel wireless power transmission coil with impedance matching function of the utility model, input impedance can pass through shifting
Dynamic short-circuited conducting sleeve 4 between matching stub 3 and spiral winding 1 is adjusted, to the output impedance or load impedance with high frequency electric source
Matching, makes high-frequency electrical energy efficiently transfer out.The coil can be used as the transmitting in magnetic resonance coupling radio energy transmission system
Coil or receiving coil have many advantages, such as that input impedance is adjustable, matching is flexible, easy to operate.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection domain within.
Claims (6)
1. a kind of wireless power transmission coil with impedance matching function, which is characterized in that include mainly spiral winding (1), coaxial
Line input terminal (2), matching stub (3) and short-circuited conducting sleeve (4)；Coaxial input (2) is used as high-frequency electrical energy feed terminal, is located at helix
(1) center is enclosed, the external shroud of coaxial input (2) is connected with spiral winding (1)；Matching stub (3) and coaxial line are defeated
Enter that the core wire of (2) is held to be connected and be short-circuited ring (4) short circuit and be connected to spiral winding (1), the input impedance of spiral winding (1) passes through
Mobile short-circuited conducting sleeve (4) is adjusted.
2. a kind of wireless power transmission coil with impedance matching function according to claim 1, which is characterized in that the spiral shell
The whole cylindrical helical structure of spin line circle (1), total length are the half-wavelength corresponding to working frequency.
3. a kind of wireless power transmission coil with impedance matching function according to claim 1, which is characterized in that described
Arc-shaped with bar (3), the center of circle of circle is overlapped with the center of spiral winding (1) where matching stub (3).
4. a kind of wireless power transmission coil with impedance matching function according to claim 3, which is characterized in that described
With the one third arc length that bar (3) total length is circle where matching stub (3).
5. according to a kind of wireless power transmission coil with impedance matching function of claim 1-4 any one of them, feature exists
In the matching stub (3) is located on the inside of spiral winding (1), with spiral winding (1) at a distance of 8cm~10cm.
6. a kind of wireless power transmission coil with impedance matching function according to claim 1, which is characterized in that described short
Road ring (4) is made of copper sheet, is moved between matching stub (3) and spiral winding (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721834166.9U CN207782492U (en) | 2017-12-25 | 2017-12-25 | A kind of wireless power transmission coil with impedance matching function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721834166.9U CN207782492U (en) | 2017-12-25 | 2017-12-25 | A kind of wireless power transmission coil with impedance matching function |
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| Publication Number | Publication Date |
|---|---|
| CN207782492U true CN207782492U (en) | 2018-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721834166.9U Expired - Fee Related CN207782492U (en) | 2017-12-25 | 2017-12-25 | A kind of wireless power transmission coil with impedance matching function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108039779A (en) * | 2017-12-25 | 2018-05-15 | 天津工业大学 | A kind of wireless power transmission coil with impedance matching function |
| CN109193966A (en) * | 2018-10-12 | 2019-01-11 | 华中科技大学 | A kind of magnet coupled resonant type wireless power transfer of micro-fluidic chip |
-
2017
- 2017-12-25 CN CN201721834166.9U patent/CN207782492U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108039779A (en) * | 2017-12-25 | 2018-05-15 | 天津工业大学 | A kind of wireless power transmission coil with impedance matching function |
| CN109193966A (en) * | 2018-10-12 | 2019-01-11 | 华中科技大学 | A kind of magnet coupled resonant type wireless power transfer of micro-fluidic chip |
| CN109193966B (en) * | 2018-10-12 | 2020-05-19 | 华中科技大学 | Magnetic coupling resonant wireless power transmission device of micro-fluidic chip |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180828 Termination date: 20191225 |
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| CF01 | Termination of patent right due to non-payment of annual fee |