CN107591902A - A kind of novel radio electric energy transmission system - Google Patents
A kind of novel radio electric energy transmission system Download PDFInfo
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- CN107591902A CN107591902A CN201711020728.0A CN201711020728A CN107591902A CN 107591902 A CN107591902 A CN 107591902A CN 201711020728 A CN201711020728 A CN 201711020728A CN 107591902 A CN107591902 A CN 107591902A
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Abstract
The present invention discloses a kind of novel radio electric energy transmission system, and it includes：Rectification filtering unit 1, high-frequency inversion unit, primary side compensating unit, transmitting coil, receiving coil, secondary compensating unit, rectification filtering unit 2, cell load, detection unit, waveform conditioning unit, phase locking unit, driver element.Its advantage is：Realize frequency-tracking using phaselocked loop, system is always worked in resonant frequency when resonant parameter changes, and with conventional phase locked loops based on inverter output voltage, electric current frequency tracking method compared with, not by frequency splitting phenomena impair.
Description
Technical field
The present invention relates to a kind of radio energy transmission system, belong to wireless charging field.
Background technology
Wireless power transmission technology is to couple to transmit energy by coil, compared to the electric energy transmission side of conventional wires connection
Formula is more flexible, safe and reliable.Magnet coupled resonant type wireless electric energy transmission technology is strict to frequency requirement, off-resonance frequency
When system effectiveness decline serious, frequency of use tracking technique can make system always work in resonant frequency, so as to improve system
Efficiency of transmission.Traditional frequency tracking method realizes frequency-tracking using phaselocked loop based on inverter output voltage, electric current,
But when system works in overcoupling region i.e. ω M/R more than 1, such a method can be had 3 frequencies by frequency splitting phenomenon
Make the influence that inverter output voltage, current and phase difference are zero.The present invention designs a kind of novel radio electric energy transmission system, uses
A kind of new frequency tracking method, system is set to always work in resonant frequency without being influenceed by frequency splitting phenomenon, so as to carry
High system effectiveness.
The content of the invention
The present invention designs a kind of novel radio electric energy transmission system, including：Rectification filtering unit 1, high-frequency inversion unit, original
Side compensating unit, transmitting coil, receiving coil, secondary compensating unit, rectification filtering unit 2, cell load, detection unit, ripple
Shape conditioning unit, phase locking unit, driver element；It is changed into direct current after the rectified rectifying and wave-filtering of filter unit 1 of line voltage, connects
It is changed into high-frequency alternating current to high-frequency inversion unit, high-frequency inversion unit is connected to primary side compensating unit, and primary side compensating unit is by electricity
Hold and form and be composed in series series resonant network with transmitting coil, coupling transmission energy, secondary between transmitting coil and receiving coil
Side compensating unit, which is made up of electric capacity and is composed in series series resonant network with receiving coil, is connected to rectification filtering unit 2, rectification
Filter unit 2 is connected to cell load, and detection unit detects electric capacity both end voltage in secondary compensating unit and connects detection signal
Enter and sine wave signal is changed into square-wave signal access phase locking unit with waveform conditioning unit, waveform conditioning unit, phase locking unit is defeated
Go out drive signal access driver element, driver element is connected with high-frequency inversion unit.
The detection unit includes Hall voltage sensor, for detecting electric capacity both end voltage in secondary compensating unit.
The waveform conditioning unit includes the elements such as voltage comparator chip LM311.
The phase locking unit includes CD4046 phase-locked loop chips, makes inversion unit for changing voltage controlled oscillator output frequency
Output voltage and the same phase of electric capacity both end voltage in secondary compensating unit.
The transmitting coil is circular planar spiral coil, the Ritz being twisted into by 600 gangs of a diameter of 0.1mm enamel-covered wire
Line is coiled into, a diameter of 400mm of outermost turn, totally 9 circle, and for turn-to-turn away from for 4mm, transmitting coil is placed in the ferrite flat board that thickness is 2mm
On magnetic core.The receiving coil is identical with transmitting coil structure, at a distance of 200mm, is placed in the ferrite flat board magnetic core that thickness is 2mm
Under.
Brief description of the drawings
Fig. 1 is system architecture diagram；
Fig. 2 is waveform conditioning unit circuit diagram；
Fig. 3 is phase locking unit circuit diagram.
Embodiment
The present invention will be further described below in conjunction with the accompanying drawings.
As shown in figure 1, radio energy transmission system of the present invention includes：Rectification filtering unit 1, high-frequency inversion unit,
Primary side compensating unit, transmitting coil, receiving coil, secondary compensating unit, rectification filtering unit 2, cell load, detection unit,
Waveform conditioning unit, phase locking unit, driver element；It is changed into direct current after the rectified rectifying and wave-filtering of filter unit 1 of line voltage, even
Be connected to high-frequency inversion unit and be changed into high-frequency alternating current, high-frequency inversion unit is connected to primary side compensating unit, primary side compensating unit by
Electric capacity forms and is composed in series series resonant network with transmitting coil, coupling transmission energy between transmitting coil and receiving coil,
Secondary compensating unit, which is made up of electric capacity and is composed in series series resonant network with receiving coil, is connected to rectification filtering unit 2, whole
Stream filter unit 2 is connected to cell load, electric capacity both end voltage and by detection signal in detection unit detection secondary compensating unit
Sine wave is changed into square wave access phase locking unit, phase locking unit output driving by access and waveform conditioning unit, waveform conditioning unit
Signal accesses driver element, and driver element is connected with high-frequency inversion unit.
When system works, the Hall voltage sensor of detection unit detects electric capacity both end voltage in secondary compensating unit and will
Obtained sinusoidal current signal access waveform conditioning unit.
As shown in Fig. 2 waveform conditioning unit receives the current signal of detection unit output, it is changed into voltage letter after resistance R3
Number enter chip LM311 2 pins and compared with 3 pin voltages, square-wave signal access of the 7 pins output with detection signal with phase
Phase locking unit, it can be compensated by adjusting variable resistor Rp1 in practical application stagnant by the signal for detecting, driving and dead band etc. is brought
Afterwards.
As shown in figure 3, the square-wave signal that phase locking unit exports waveform conditioning unit accesses phase-locked loop chip CD4046's
14 pins, this signal is compared with 4 pin voltage controlled oscillator output signals, and by 13 pin output phase difference signals, via
The loop filter of R7, R9, C3 composition produces the output frequency that control voltage enters 9 pins control voltage controlled oscillator, voltage-controlled to shake
Swing device and access driving list by the output of 4 pins with waveform conditioning unit output square-wave signal with the drive signal of phase and by this signal
Member.
Driver element receives the drive signal of phase locking unit, and signal of the two-way with dead band is formed through dead-zone circuit, then through driving
Dynamic circuit forms 4 road pwm signal access high-frequency inversion units.
It is changed into direct current after the rectified rectifying and wave-filtering of filter unit 1 of line voltage and is electrically connected to high-frequency inversion unit, high frequency is inverse
Become unit and use full-bridge inverting, switching tube uses MOSFET, and the 4 road pwm signals that 4 switching tubes are exported by driver element drive.
The series resonant network that the output high-frequency ac voltage access of high-frequency inversion unit is made up of primary side compensating unit and transmitting coil.Hair
Ray circle is circular planar spiral coil, and the litz wire being twisted into by 600 gangs of a diameter of 0.1mm enamel-covered wire is coiled into, outermost turn
A diameter of 400mm, totally 9 circle, turn-to-turn for 4mm, transmitting coil away from being placed on the ferrite flat board magnetic core that thickness is 2mm.Receive line
Circle is identical with transmitting coil structure, is placed under the ferrite flat board magnetic core that thickness is 2mm.Lead between transmitting coil and receiving coil
Energy is transmitted in overcoupling, and receiving coil receives the energy of transmitting coil transmission and forms series resonant network with secondary compensating unit
Rectification filtering unit 2 is connected to, high-frequency alternating current is changed into direct current and is electrically connected to cell load by rectification filtering unit 2.
Claims (5)
1. a kind of novel radio electric energy transmission system, it is characterized in that including：Rectification filtering unit 1, high-frequency inversion unit, primary side are mended
Unit, transmitting coil, receiving coil, secondary compensating unit, rectification filtering unit 2, cell load, detection unit, waveform is repaid to adjust
Manage unit, phase locking unit, driver element；It is changed into direct current after the rectified rectifying and wave-filtering of filter unit 1 of line voltage, is connected to height
Frequency inversion unit is changed into high-frequency alternating current, and high-frequency inversion unit is connected to primary side compensating unit, and primary side compensating unit is by capacitance group
Cheng Bingyu transmitting coils are composed in series series resonant network, and coupling transmission energy, secondary are mended between transmitting coil and receiving coil
Repay unit and be made up of electric capacity and be composed in series series resonant network with receiving coil and be connected to rectification filtering unit 2, rectifying and wave-filtering
Unit 2 is connected to cell load, in detection unit detection secondary compensating unit electric capacity both end voltage and by detection signal access with
Sine wave signal is changed into square-wave signal access phase locking unit by waveform conditioning unit, waveform conditioning unit, and phase locking unit output is driven
Dynamic signal access driver element, driver element are connected with high-frequency inversion unit.
A kind of 2. novel radio electric energy transmission system according to claim 1, it is characterized in that detection unit includes Hall electricity
Pressure sensor, for detecting electric capacity both end voltage in secondary compensating unit.
A kind of 3. novel radio electric energy transmission system according to claim 1, it is characterized in that waveform conditioning unit includes electricity
Press the elements such as comparator chip LM311.
A kind of 4. novel radio electric energy transmission system according to claim 1, it is characterized in that phase locking unit includes CD4046
Phase-locked loop chip, make inversion unit output voltage and electric capacity two in secondary compensating unit for changing voltage controlled oscillator output frequency
The same phase of terminal voltage.
A kind of 5. novel radio electric energy transmission system according to claim 1, it is characterized in that transmitting coil is circular flat
Spiral winding, the litz wire being twisted into by 600 gangs of a diameter of 0.1mm enamel-covered wire are coiled into, a diameter of 400mm of outermost turn, and totally 9
Circle, away from for 4mm, transmitting coil is placed on the ferrite flat board magnetic core that thickness is 2mm turn-to-turn, receiving coil and transmitting coil structure
It is identical, it is placed under the ferrite flat board magnetic core that thickness is 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711020728.0A CN107591902A (en) | 2017-10-27 | 2017-10-27 | A kind of novel radio electric energy transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711020728.0A CN107591902A (en) | 2017-10-27 | 2017-10-27 | A kind of novel radio electric energy transmission system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107591902A true CN107591902A (en) | 2018-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711020728.0A Withdrawn CN107591902A (en) | 2017-10-27 | 2017-10-27 | A kind of novel radio electric energy transmission system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108808888A (en) * | 2018-06-08 | 2018-11-13 | 深圳市汇森无线传输有限公司 | A kind of wireless charging system and its resonance compensation shunt method |
| CN109459673A (en) * | 2018-12-28 | 2019-03-12 | 广州供电局有限公司 | Detection circuit for partial discharge |
| CN113555967A (en) * | 2021-06-10 | 2021-10-26 | 上海万暨电子科技有限公司 | Resonance compensation method, device and system for wireless charging transmitting coil |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2403101A2 (en) * | 2003-02-04 | 2012-01-04 | Access Business Group International LLC | Adaptive inductive power supply with communication |
| CN105119389A (en) * | 2015-09-16 | 2015-12-02 | 天津工业大学 | Frequency self-adaptive tracking device for wireless power supply locomotive |
| CN205646956U (en) * | 2016-04-01 | 2016-10-12 | 杨军 | Portable three -dimensional wireless charging device of many cell -phones |
-
2017
- 2017-10-27 CN CN201711020728.0A patent/CN107591902A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2403101A2 (en) * | 2003-02-04 | 2012-01-04 | Access Business Group International LLC | Adaptive inductive power supply with communication |
| CN105119389A (en) * | 2015-09-16 | 2015-12-02 | 天津工业大学 | Frequency self-adaptive tracking device for wireless power supply locomotive |
| CN205646956U (en) * | 2016-04-01 | 2016-10-12 | 杨军 | Portable three -dimensional wireless charging device of many cell -phones |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108808888A (en) * | 2018-06-08 | 2018-11-13 | 深圳市汇森无线传输有限公司 | A kind of wireless charging system and its resonance compensation shunt method |
| CN109459673A (en) * | 2018-12-28 | 2019-03-12 | 广州供电局有限公司 | Detection circuit for partial discharge |
| CN113555967A (en) * | 2021-06-10 | 2021-10-26 | 上海万暨电子科技有限公司 | Resonance compensation method, device and system for wireless charging transmitting coil |
| CN113555967B (en) * | 2021-06-10 | 2023-12-15 | 上海万暨电子科技有限公司 | Resonance compensation method, device and system for wireless charging transmitting coil |
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Application publication date: 20180116 |