CN105896746A - Antenna and device for wireless electric energy transmission of rotary part - Google Patents
Antenna and device for wireless electric energy transmission of rotary part Download PDFInfo
- Publication number
- CN105896746A CN105896746A CN201610508658.2A CN201610508658A CN105896746A CN 105896746 A CN105896746 A CN 105896746A CN 201610508658 A CN201610508658 A CN 201610508658A CN 105896746 A CN105896746 A CN 105896746A
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- antenna
- rotary part
- transmitting terminal
- dicyclic
- energy transmission
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 37
- 125000002619 bicyclic group Chemical group 0.000 claims description 17
- 230000008878 coupling Effects 0.000 claims description 11
- 238000010168 coupling process Methods 0.000 claims description 11
- 238000005859 coupling reaction Methods 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 8
- 238000004804 winding Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000003745 diagnosis Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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- H02J5/005—
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- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses an antenna and a device for wireless electric energy transmission of a rotary part. The antenna adopts a double-ring type antenna, and comprises two annular parts and a connecting part, wherein the annular parts are arranged in a coaxial parallel way, and the directions of current around the axes in the normal working process are opposite; the connecting part is arranged between the annular parts. The device comprises a base part and the rotary part, wherein the base part is used for performing wireless electric energy transmission by the double-ring type antenna in a magnetic resonance way; the rotary part is arranged on a rotary shaft; the base part comprises a power supply device and the double-ring type antenna, and the double-ring type antenna is electrically connected with the power supply device and is used as a transmitting end; the rotary part comprises the double-ring type antenna and a power transmission device, the double-ring type antenna is used for rotating corresponding to the transmitting end and is used as a receiving end, and the power transmission device is electrically connected with the receiving end. The antenna and the device have the advantages that the stability of energy transmission is guaranteed, the energy transmission efficiency is improved, and the antenna and the device are suitable for application occasions with stricter requirements on size and quality.
Description
Technical field
The invention belongs to wireless power transmission technical field, be specifically related to a kind of antenna for rotary part wireless power transmission and device.
Technical background
The Axle Parts being in rotation status that some are important is monitored in real time, thus the fault being wherein likely to occur or occurred is carried out diagnosis promptly and accurately and eliminating is the important leverage of system reliability service.The outstanding advantages of the embedded failure diagnosis technology that application is wider is that fault diagnosis system is embedded into device interior at present, as far as possible close to it may happen that the parts of fault, is greatly improved monitoring capability and the accuracy rate of system.But, to be how that be embedded into the systems stay of rotating shaft to power be one of critical problem urgently to be resolved hurrily.
Wireless power transmission technology has high-transmission efficiency, medium transmission range, the advantage such as non-radiative, and the not enough safety of the power supply mode such as overcome wired power supply, battery is powered, slip ring is powered, rotary transformer is powered is good.Utilize wireless power transmission technology to power for rotating shaft embedded system to have become as when previous study hotspot.
Yet with rotating shaft magnetic field blocked and transmitting terminal and receiving terminal skew in position, system is difficult to keep stable couple state, the problems such as energy transmission is unstable, average energy efficiency of transmission is low easily occur, many scholars are to solve this problem to have carried out positive exploration.Some designs add the number of transmitting terminal and receiving terminal, make when a part of receiving terminal is away from transmitting terminal, another part receiving terminal is close to transmitting terminal, thus decrease the fluctuation of energy transmission, but the method still cannot realize the stable transmission of energy, its average energy efficiency of transmission is relatively low, it is difficult to keep normal resonant condition；Other then uses telescoping structure, and add Ferrite Material correction magnetic direction, system is made to keep close coupling state, thus realize the continual and steady transmission of energy, but the transmitting terminal of telescoping structure and receiving terminal all volumes are relatively big, heavier mass, it is unfavorable for integrated, easily affects the properly functioning of rotating shaft when rotating speed is higher.
Summary of the invention
It is an object of the invention to provide a kind of antenna for rotary part wireless power transmission and device, with ensure as rotating shaft on embedded failure diagnosis systems stay stable energy transmission, improve energy transmission efficiency, it is adaptable to the application scenario more harsh to size and prescription.
The technical scheme realizing the object of the invention employing is as follows:
The antenna for rotary part wireless power transmission that the present invention provides, for dicyclic antenna, including two coaxial parallel and when normal work coupling part between annular section and two annular sections that shaft current is in opposite direction.
The annular section of described dicyclic antenna is opening single ring architecture or is the multiring structure formed by some circle spiral windings.
Said two annular section size is identical.
The wireless electric energy transmission device for rotary part using described antenna that the present invention provides, including using described dicyclic antenna by the base part of magnetic resonance mode wirelessly transmitting electrical energy and the rotating part being arranged in rotating shaft；Described base part includes electric supply installation and the dicyclic antenna as transmitting terminal electrically connected with electric supply installation, and described rotating part includes the dicyclic antenna as receiving terminal that the most described transmitting terminal rotates and the power transmitting device electrically connected with described receiving terminal.
Described transmitting terminal is co-axially mounted with described rotating shaft, and described receiving terminal is arranged on diametrically opposed with transmitting terminal in described rotating shaft answering.
Beneficial effect
Advantage compared with the contact power supply modes such as the present invention powers with traditional wired power supply, battery, slip ring is powered is: does not has physical contact between transmitting terminal and receiving terminal, thus eliminates abrasion, greatly improves the service life of equipment.
Present invention advantage compared with induction wireless power transmission technology is: transmitting terminal and receiving terminal carry out energy transmission under strong magnetic coupling resonant condition, it is ensured that what under the conditions of middle distance, energy transmitted is efficiently carried out, and increases transmission range.
Present invention advantage compared with the existing wireless power transmission technology being applied to rotary part is:
1) transmitting terminal can produce the magnetic field that when pivoting, radial component size is constant, it is to avoid magnetic field is blocked by rotating shaft；
2) transmitting terminal and receiving terminal are in close coupling resonant condition all the time, are affected by axis of rotation the least, thus improve the energy transmission efficiency of this electric power system, are more beneficial for ensureing the normal power supply for rotating shaft embedded failure diagnosis system；
3) advantage that the present invention has miniaturization, lighting, it is to avoid disturb the properly functioning of rotating shaft, be with a wide range of applications in the occasion harsher for size and prescription.
Further illustrate technical scheme below in conjunction with the accompanying drawings.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the structural representation of transmitting terminal in the present invention.
Fig. 3, Fig. 4 are the structural representation of another kind of transmitting terminal in the present invention respectively.
Fig. 5 is the structural representation of another transmitting terminal in the present invention.
Fig. 6 is the principle analysis figure of transmitting terminal/receiving terminal.
Detailed description of the invention
The antenna for rotary part wireless power transmission of present invention offer and device, as shown in Figure 1 and Figure 2, described antenna uses dicyclic antenna, and described device includes using dicyclic antenna by the base part of magnetic resonance mode wirelessly transmitting electrical energy and the rotating part being arranged in rotating shaft 8.Described base part includes electric supply installation and the dicyclic antenna as transmitting terminal 3 electrically connected with electric supply installation, and described rotating part includes the dicyclic antenna as receiving terminal 4 that the most described transmitting terminal 3 rotates and the power transmitting device electrically connected with described receiving terminal 4.Described dicyclic antenna include two coaxial parallel and when normal work coupling part between annular section and two annular sections that shaft current is in opposite direction, wherein transmitting terminal 3 includes annular section 301 and coupling part 302 two parts conductor, and receiving terminal 4 includes annular section 401 and coupling part 402 two parts conductor；Described transmitting terminal 3 is co-axially mounted with described rotating shaft 8, and described receiving terminal 4 is arranged on diametrically opposed with transmitting terminal 3 in described rotating shaft 8 answering.
Two annular sections 401 of described receiving terminal 4 are between two annular sections 301 of described transmitting terminal 3 (seeing Fig. 4), and the diameter L1 of two annular sections 301 of described transmitting terminal 3 is more than the diameter L2 of two annular sections 401 of described receiving terminal 4；Described electric supply installation includes the first tuning circuit 2 that the high-frequency ac power 1 being sequentially connected electrically electrically connects with described transmitting terminal 3；Described power transmitting device includes the second tune circuit 5 electrically connected with described receiving terminal 4, regulator rectifier circuit 6 and the load 7 being sequentially connected electrically.
The diameter L1 of two annular sections 301 of described transmitting terminal 3 can also be equal to the diameter L2 of the annular section 401 of described receiving terminal 4；Or the diameter L1 of two annular sections 301 of transmitting terminal 3 is less than the diameter L2 of two annular sections 401 of receiving terminal 4, as shown in Figure 4, in this case, the size diametrically of the coupling part 302 between 3 liang of annular sections 301 of transmitting terminal only need to be increased to the length not interfering receiving terminal 4 to rotate.
Outside two annular sections 401 of described receiving terminal 4 also can be generally aligned in the same plane with two annular sections 301 of transmitting terminal 3 or be positioned at two annular sections 301 of transmitting terminal 3.
As a example by transmitting terminal 3, the annular section 301 of described dicyclic antenna can be opening single ring architecture (seeing Fig. 3), the multiring structure that annular section 301 also can be formed by some circle spiral windings, the two ends of this annular section 301 are respectively external-connected port 303, and two annular sections 301 are coaxially co-axially mounted；Two external-connected ports 303 are connected (seeing Fig. 5) by outer lead with the circuit of electric supply installation.
When the emitted end 3 of high-frequency ac current, around transmitting terminal 3, excite high-frequency alternating magnetic field, convert electrical energy into magnetic field energy.This magnetic field is uniformly distributed along rotating shaft 8 circumference, it is ensured that stablizing of energy transmission.Receiving terminal 4 constitutes reception loop, by the capacitance of second tune circuit 5 with the second tune circuit 5 of power transmitting device so that the resonant frequency receiving loop is consistent with the frequency of high-frequency alternating current, now receives loop and resonance occurs.Therefore, launching circuit and reception loop issue magnetisation coupled resonance in the frequency of high-frequency alternating current, and magnetic field energy is converted in electric energy, and input rectifying mu balanced circuit by receiving terminal, it is achieved thereby that wireless power transmission.The high-frequency alternating current that receiving terminal 4 is exported by regulator rectifier circuit 6 carries out rectification, voltage stabilizing processes, and is converted into unidirectional current for load 7.
The principle analysis of transmitting terminal/receiving terminal:
When electric current flows through transmitting terminal 3, the current direction of its both sides annular section is contrary, and excites magnetic field respectively, as shown in Figure 6.As seen from the figure, the magnetic field that the electric current of both sides annular section excites the most mutually is strengthening, and is axially cancelling out each other.Ignoring the coupling part in the middle of transmitting terminal 3, owing to the size of current of both sides annular section is the most equal, therefore its magnetic field excited circumferentially is uniformly distributed.Receiving terminal 4 matches with transmitting terminal 3, effectively prevent rotating shaft and blocks magnetic field, and due to the symmetry of dicyclic annular section, the magnetic coupling state between transmitting terminal 3 and receiving terminal 4 is not affected by axis of rotation, thus it is continual and steady to ensure that energy transmits.
Claims (5)
1., for the antenna of rotary part wireless power transmission, it is characterized in that using dicyclic antenna, including two coaxial parallel and when normal work coupling part between annular section and two annular sections that shaft current is in opposite direction.
Antenna for rotary part wireless power transmission the most according to claim 1, is characterized in that the annular section of described dicyclic antenna is opening single ring architecture or is the multiring structure formed by some circle spiral windings.
Antenna for rotary part wireless power transmission the most according to claim 2, is characterized in that said two annular section size is identical.
4. use the wireless electric energy transmission device for rotary part of any antenna as described in claims 1 to 3, it is characterized in that including using described dicyclic antenna by the base part of magnetic resonance mode wirelessly transmitting electrical energy and the rotating part being arranged in rotating shaft；Described base part includes electric supply installation and the dicyclic antenna as transmitting terminal electrically connected with electric supply installation, and described rotating part includes the dicyclic antenna as receiving terminal that the most described transmitting terminal rotates and the power transmitting device electrically connected with described receiving terminal.
Wireless electric energy transmission device for rotary part the most according to claim 4, is characterized in that described transmitting terminal is co-axially mounted with described rotating shaft, and described receiving terminal is arranged on diametrically opposed with transmitting terminal in described rotating shaft answering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610508658.2A CN105896746A (en) | 2016-07-02 | 2016-07-02 | Antenna and device for wireless electric energy transmission of rotary part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610508658.2A CN105896746A (en) | 2016-07-02 | 2016-07-02 | Antenna and device for wireless electric energy transmission of rotary part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105896746A true CN105896746A (en) | 2016-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610508658.2A Pending CN105896746A (en) | 2016-07-02 | 2016-07-02 | Antenna and device for wireless electric energy transmission of rotary part |
Country Status (1)
| Country | Link |
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| CN (1) | CN105896746A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630858A (en) * | 2012-08-23 | 2014-03-12 | 西门子(深圳)磁共振有限公司 | Magnetic resonance system shoulder coil, and transmitting coil thereof |
| US20150069851A1 (en) * | 2012-03-20 | 2015-03-12 | Chin-Wook Chung | Transmitter for transmitting wireless power and wireless power transmitting system having the same |
| CN105576937A (en) * | 2015-11-06 | 2016-05-11 | 仲炳华 | Self-power-generation track top toy |
| CN205846878U (en) * | 2016-07-02 | 2016-12-28 | 中国人民解放军国防科学技术大学 | A kind of antenna for rotary part wireless power transmission and device |
-
2016
- 2016-07-02 CN CN201610508658.2A patent/CN105896746A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150069851A1 (en) * | 2012-03-20 | 2015-03-12 | Chin-Wook Chung | Transmitter for transmitting wireless power and wireless power transmitting system having the same |
| CN103630858A (en) * | 2012-08-23 | 2014-03-12 | 西门子(深圳)磁共振有限公司 | Magnetic resonance system shoulder coil, and transmitting coil thereof |
| CN105576937A (en) * | 2015-11-06 | 2016-05-11 | 仲炳华 | Self-power-generation track top toy |
| CN205846878U (en) * | 2016-07-02 | 2016-12-28 | 中国人民解放军国防科学技术大学 | A kind of antenna for rotary part wireless power transmission and device |
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Application publication date: 20160824 |
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