CN102882290A - Novel electromagnetic coupling resonant wireless power transmission system - Google Patents
Novel electromagnetic coupling resonant wireless power transmission system Download PDFInfo
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- CN102882290A CN102882290A CN2012104137061A CN201210413706A CN102882290A CN 102882290 A CN102882290 A CN 102882290A CN 2012104137061 A CN2012104137061 A CN 2012104137061A CN 201210413706 A CN201210413706 A CN 201210413706A CN 102882290 A CN102882290 A CN 102882290A
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Abstract
The invention discloses a novel electromagnetic coupling resonant wireless power transmission system, and belongs to the field of wireless power transmission and conversion. Energy can be efficiently transmitted and converted within several meters by utilizing an electromagnetic coupling resonant technology, and the system has broad market prospect. According to the system, a high-power power supply is adopted for self-oscillation and power supply to a resonant circuit, and the resonant circuit generates an alternating magnetic field, and wirelessly transmits energy through a high-quality factor resonator, so that the electric energy can be conveniently utilized. The system mainly comprises a direct current power supply (1), a voltage limiting protector (2), a frequency selection network (3), a booster coil (4), a feedback adjuster (5), an amplification link (6), a source coil S (7), a resonance coil A1 (8), a resonance coil A2 (9), a load coil D (10) and a load (11). Electric power can be efficiently provided for the load within several meters by the system, and the system has the advantages of high efficiency, safety, reliability, low cost and maintenance cost, convenience for operation, intelligent controllability and the like.
Description
Technical field
The wireless power transmission technology is one of most active hot research direction in present electrical engineering field, it is the advanced subject that integrates basic research and application study, be the new research field of a multidisciplinary strong intersection of the outer academia of Present Domestic and industrial quarters exploration, contain many technical fields such as electromagnetic field, electric power system, power electronic technology, control technology, materialogy, physics, information technology.Adopt the wireless power mode can effectively overcome all kinds of defectives that the electric wire connected mode exists, realize freely powering of electronic apparatus, have important application expection and vast potential for future development.
The present invention---Novel electric magnet coupled resonant type radio energy transmission system, based on the wireless power transmission know-why, defer to the theory of whole efficiency maximization and optimal design, design the high efficiency energy transmission system---the noiseless resonance structure of high quality factor symmetrical expression, can give full play to the electrical characteristic of electromagnetic coupled resonator system, can realize in the several meters scopes the load high efficient and reliable electromagnetic energy is provided, can be widely used in public electricity-using occasion or the various power utilization environment that has potential safety hazard.
Background technology
The wireless power transmission technology is broadly divided into three kinds: the first is the inductive coupling type electric energy transmission, and it utilizes the loosely coupled transformer principle to pass energy, and generally there are the core device that reduces the loop magnetic resistance in transmitting terminal and receiving terminal.The second is electromagnetic coupled resonant mode delivery of electrical energy, by inductance on the resonator of high quality factor and distributed capacitor generation resonance transmitting energy.The third is electromagnetic radiation formula delivery of electrical energy, and electric energy is converted into microwave form in this technology, and transmission range exceedance km can be realized the teletransmission of electric energy.Wherein the electromagnetic coupled harmonic technology utilizes non-radiative electromagnetic field near-field region to finish delivery of electrical energy, than induction biography energy, in transmission range very large expansion has been arranged on the one hand; Compare on the other hand the electromagnetic radiation formula and pass energy, the near-field region energy has radiationless characteristics, and this technology has preferably fail safe, therefore obtains at present very large concern and research.
Summary of the invention
Technical problem to be solved by this invention is under the theory guiding of whole efficiency maximization and optimal design, electromagnetic coupled resonance type wireless electric energy transmission system to be carried out global design, the high efficient and reliable of realization electric energy and remote wireless transmission.
The technical solution adopted in the present invention is: Novel electric magnet coupled resonant type radio energy transmission system; including DC power supply (1) is loaded on the step-up coil (4) after by voltage-limiting protection (2) and frequency-selective network (3); the size of feedback regulation (5) control feedback quantity also is input to frequency-selective network (3) by amplifying element (6); after source coil S (7) obtains energy from step-up coil (4); pass through successively resonance coil A1 (8) by magnetic fields; resonance coil A2 (9); behind the loading coil D (10), provide energy to load (11).
Described frequency-selective network (3) is made of coarse adjustment frequency-selecting and fine setting frequency-selecting two parts.Wherein the coarse adjustment frequency-selecting partly is the air electric capacity of one group of single-ended fixedly appearance value that links, and the fine setting frequency-selecting partly is an air variable capacitance.But the operating frequency of gear selective system appearance value final decision system will be passed through after the two series connection.
Described step-up coil (4) forms according to selected number of turn coiling by the low-loss litz wire with certain cross-sectional area, comprises elementary low-pressure side and secondary high pressure side two parts.Elementary low-pressure side adopts the number of turn less and cross section and larger litz wire coiling, and the secondary high pressure side employing number of turn is more and cross section and less litz wire coiling, is high voltage-small current power thereby can low-voltage, high-current be turned power transfer by the principle of electromagnetic induction.
Described resonance coil A1 (8) by the low-loss copper tube turn to helical structure and with the coaxial placement of source coil S (7), the number of turn of helical structure, radius are determined according to concrete operating frequency, turn-to-turn is apart from keeping the 3-5cm spacing in the helical structure, and responsible induction is positioned at the high-frequency energy on the source coil S (7) and sets up idle near field.
Described resonance coil A2 (9) turns to helical structure by the low-loss copper tube and places with the coaxial symmetry of resonance coil A1 (8), the number of turn of helical structure, radius are determined according to concrete operating frequency, turn-to-turn is apart from keeping the 3-5cm spacing in the helical structure, be responsible for absorbing energy from the idle near field that resonance coil A1 (8) sets up through silver-plated processing in the surface.
Described loading coil D (10) forms by silver-plated low-loss multiturn and around Teflon wire-wound system, keep between every circle mutually insulated and with the coaxial concentric placement of resonance coil A2 (9), the output two ends are connected with load (11), and its number of turn is decided by the locus of loading coil work.
Electromagnetic coupled resonance type wireless electric energy transmission system of the present invention, load High frequency electromagnetic power and send resonance coil A1 (8) in the mode of responding to by source coil S (7), energy sends resonance coil A2 (9) in the mode of electromagnetic coupled resonance, and then by the induction mode send loading coil D (10) to, thereby make load (11) obtain wirelessly electric energy, realize the stable supply of electric power of high efficient and reliable in the several meters scopes.
Description of drawings
Fig. 1 is overall structure figure of the present invention;
Fig. 2 is the structure chart of frequency-selective network (3);
Fig. 3 is the structure chart of step-up coil (4);
Fig. 4 is the structure chart of source coil S (7), resonance coil A1 (6), resonance coil A2 (7) and loading coil D (10);
Fig. 5 is the fundamental diagram of Novel electric magnet coupled resonant type radio energy transmission system.
Wherein:
(1): DC power supply; (2): voltage-limiting protection; (3): frequency-selective network; (4): step-up coil; (5): feedback regulation; (6): amplifying element; (7): source coil S; (8): resonance coil A1; (9): resonance coil A2; (10): loading coil D; (11): load.C
1: the coarse adjustment fixed capacity; L
s: the source coil inductance; M
S1: feedback capacity; M
12: alternating current bypass electric capacity; M
2D: feedback capacity; R
L: load resistance; V
S: equivalent voltage
Embodiment
Below in conjunction with example and accompanying drawing Novel electric magnet coupled resonant type radio energy transmission system of the present invention is made a detailed description.
As shown in Figure 1, electromagnetic coupled resonance type wireless electric energy transmission system of the present invention includes: DC power supply (1); voltage-limiting protection (2); frequency-selective network (3), step-up coil (4), feedback regulation (5); amplifying element (6); source coil S (7), resonance coil A1 (8), resonance coil A2 (9); loading coil D (10), load (11).
As shown in Figure 2, described frequency-selective network (3) is made of coarse adjustment frequency-selecting and fine setting frequency-selecting two parts.When amplifying element (6), source coil S (7) successfully realize hunting power output with the self oscillatory system of feedback regulation (5) formation, first conversion coarse adjustment fixed capacity C
1Gear, then regulate fine setting variable capacitance C
2The appearance value, make the firm operating frequency of system finally reach predetermined value.
As shown in Figure 3, described step-up coil (4) forms by the low-loss litz wire coiling with certain cross-sectional area, comprises elementary low-pressure side and secondary high pressure side two parts.When amplifying element (6) normal operation is also successfully set up higher-order of oscillation mode of operation and is adjusted to the predetermined work frequency, High frequency electromagnetic power will be loaded into the primary side of step-up coil (4).According to electromagnetic induction principle, the low-voltage, high-current of elementary low-pressure side turns power and will be converted to high voltage-small current power and be loaded into the secondary high pressure side.
As shown in Figure 4, described source coil S (7), resonance coil A1 (8), resonance coil A2 (9) and the coaxial placement of loading coil D (10).At first the electromagnetic power of source coil S (7) absorption is loaded on resonance coil A1 (8) by electromagnetic induction, then the mode with electromagnetic coupled resonance is loaded on resonance coil A2 (9), be loaded on loading coil D (10) in the mode of electromagnetic induction more subsequently, the final realization powered to load (11).
As shown in Figure 5, described Novel electric magnet coupled resonant type radio energy transmission system at first is loaded into the high-frequency electromagnetic energy on the source coil S (7), energy passes to resonance coil A1 (8) and sets up idle near field with the form of induction, resonance coil A2 (9) obtains electromagnetic energy and passes to loading coil D (10) in the mode of responding to again from this, thereby makes load (11) obtain electric power supply.Do not utilize electromagnetic radiation to carry out delivery of electrical energy in the whole process, therefore can guarantee biological safety.
Novel electric magnet coupled resonant type radio energy transmission system of the present invention, under the theory guiding of whole efficiency maximization and optimal design, electromagnetic coupled resonance type wireless electric energy transmission system is carried out global design, realize high efficient and reliable and the remote wireless transmission of electric energy.Under normal operation, can realize the wireless supply of electric energy in the several meters scopes, can be widely used in public electricity-using occasion or the various power utilization environment that has potential safety hazard, have that highly effective and safe is reliable, low, an easy and simple to handle and intelligent advantage such as controlled of cost and maintenance cost.
Claims (5)
1. Novel electric magnet coupled resonant type radio energy transmission system; it is characterized in that including DC power supply (1) is loaded on the step-up coil (4) after by voltage-limiting protection (2) and frequency-selective network (3); the size of feedback regulation (5) control feedback quantity also is input to frequency-selective network (3) by amplifying element (6); after source coil S (7) obtains energy from step-up coil (4); pass through successively resonance coil A1 (8) by magnetic fields; resonance coil A2 (9); behind the loading coil D (10), provide energy to load (11).
2. Novel electric magnet coupled resonant type radio energy transmission system according to claim 1, be further characterized in that, described step-up coil (4) forms according to selected number of turn coiling by the low-loss litz wire with certain cross-sectional area, comprises elementary low-pressure side and secondary high pressure side two parts; Elementary low-pressure side adopts the number of turn less and cross section and larger litz wire coiling, and the secondary high pressure side adopts the number of turn more and cross section and less litz wire coiling.
3. Novel electric magnet coupled resonant type radio energy transmission system according to claim 1, be further characterized in that, described resonance coil A1 (8) by the low-loss copper tube turn to helical structure and with the coaxial placement of source coil S (7), the number of turn of helical structure, radius determine according to concrete operating frequency, and turn-to-turn is apart from keeping the 3-5cm spacing in the helical structure.
4. Novel electric magnet coupled resonant type radio energy transmission system according to claim 1, be further characterized in that, described resonance coil A2 (9) turns to helical structure by the low-loss copper tube and places with the coaxial symmetry of resonance coil A1 (8), turn-to-turn is apart from keeping the 3-5cm spacing in the helical structure, and the surface is through silver-plated processing.
5. Novel electric magnet coupled resonant type radio energy transmission system according to claim 1, be further characterized in that, described loading coil D (10) forms by silver-plated low-loss multiturn and around Teflon wire-wound system, keep between every circle mutually insulated and with the coaxial concentric placement of resonance coil A2 (9), the output two ends are connected with load (11).
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| CN2012104137061A CN102882290A (en) | 2012-10-24 | 2012-10-24 | Novel electromagnetic coupling resonant wireless power transmission system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105720703A (en) * | 2016-04-13 | 2016-06-29 | 芯路通讯南京有限公司 | Vehicle load power supply apparatus |
| CN105915194A (en) * | 2016-05-10 | 2016-08-31 | 华东交通大学 | Frequency selection narrowband band pass filter based on magnetic resonance coupling |
| CN107276242A (en) * | 2017-05-23 | 2017-10-20 | 哈尔滨工业大学 | Contactless energy transmission device and method on satellite |
| CN108199500A (en) * | 2018-02-02 | 2018-06-22 | 华南理工大学 | A kind of SS type single line power transmission systems based on self-oscillation power supply |
| CN108321944A (en) * | 2018-02-02 | 2018-07-24 | 华南理工大学 | SS type field coupling radio energy transmission systems based on self-oscillation power supply |
| CN108448742A (en) * | 2018-03-16 | 2018-08-24 | 河南师范大学 | A kind of wireless power supply for gall-bladder endoscope |
| CN109255174A (en) * | 2018-08-31 | 2019-01-22 | 桂林电子科技大学 | Magnet coupled resonant type wireless energy transmission coil simulating analysis |
| CN111931299A (en) * | 2020-06-02 | 2020-11-13 | 西安理工大学 | Optimal design method of planar spiral coil in magnetic coupling resonance wireless power transmission application |
-
2012
- 2012-10-24 CN CN2012104137061A patent/CN102882290A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105720703B (en) * | 2016-04-13 | 2019-01-18 | 芯路通讯南京有限公司 | Vehicle load power supply unit |
| CN105720703A (en) * | 2016-04-13 | 2016-06-29 | 芯路通讯南京有限公司 | Vehicle load power supply apparatus |
| CN105915194A (en) * | 2016-05-10 | 2016-08-31 | 华东交通大学 | Frequency selection narrowband band pass filter based on magnetic resonance coupling |
| CN107276242A (en) * | 2017-05-23 | 2017-10-20 | 哈尔滨工业大学 | Contactless energy transmission device and method on satellite |
| CN108199500A (en) * | 2018-02-02 | 2018-06-22 | 华南理工大学 | A kind of SS type single line power transmission systems based on self-oscillation power supply |
| CN108321944A (en) * | 2018-02-02 | 2018-07-24 | 华南理工大学 | SS type field coupling radio energy transmission systems based on self-oscillation power supply |
| CN108199500B (en) * | 2018-02-02 | 2023-09-26 | 华南理工大学 | SS type single-wire power transmission system based on self-oscillation power supply |
| CN108321944B (en) * | 2018-02-02 | 2023-09-26 | 华南理工大学 | SS type electric field coupling wireless power transmission system based on self-oscillation power supply |
| CN108448742A (en) * | 2018-03-16 | 2018-08-24 | 河南师范大学 | A kind of wireless power supply for gall-bladder endoscope |
| CN109255174A (en) * | 2018-08-31 | 2019-01-22 | 桂林电子科技大学 | Magnet coupled resonant type wireless energy transmission coil simulating analysis |
| CN109255174B (en) * | 2018-08-31 | 2022-07-22 | 桂林电子科技大学 | Magnetic coupling resonant wireless energy transmission coil simulation analysis method |
| CN111931299A (en) * | 2020-06-02 | 2020-11-13 | 西安理工大学 | Optimal design method of planar spiral coil in magnetic coupling resonance wireless power transmission application |
| CN111931299B (en) * | 2020-06-02 | 2024-04-16 | 西安理工大学 | Optimal design method of planar spiral coil in magnetic coupling resonance wireless power transmission application |
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Application publication date: 20130116 |