CN207397558U - The wireless power transmission experimental provision of frequency-adjustable - Google Patents
The wireless power transmission experimental provision of frequency-adjustable Download PDFInfo
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- CN207397558U CN207397558U CN201720864325.3U CN201720864325U CN207397558U CN 207397558 U CN207397558 U CN 207397558U CN 201720864325 U CN201720864325 U CN 201720864325U CN 207397558 U CN207397558 U CN 207397558U
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Abstract
The utility model is related to a kind of wireless power transmission experimental provisions of frequency-adjustable, and using modular design, wherein transmitting end device includes signal generating module, drive module, inverter module, transmitting module and DC power supplier；And receiving terminal is mainly made of receiving module, rectification filtering module, detection device and load.This experimental provision designs the topological structure of four kinds of magnetic coupling resonance circuits, selects direct insertion device, can select the capacitance of different topology structure and different parameters and inductance original paper as needed；In addition, its signal generating module uses TL494CN chips, with the PWM wave of trimmable resistance structure frequency-adjustable；Researcher can be allowed intuitively to understand electromagnetic coupling resonance, the high-frequency inversion of power electronics and the knowledge of rectification.This experimental provision has many advantages, such as good operability and is easily achieved, environmental protection, studies related personnel wireless power transmission tool and is very helpful.
Description
Technical field
The utility model is related to a kind of radio transmitting device technology, more particularly to a kind of wireless power transmission of frequency-adjustable
Experimental provision.
Background technology
So-called wireless power transmission is that a kind of technology of energy transmission is carried out by means of electromagnetic field or electromagnetic wave.With science and technology
Development and improvement of living standard, the electric appliance of the needs such as mobile phone, laptop, electric toothbrush movement comes into more and more
Resident daily life, and the wired charging of these equipment causes inconvenience to people.People generate under this environment
It is more and more urgent to the demand of wireless charging.The meaning of employing wireless charging technique is：Wireless charging not only avoids with oneself
The inconvenience of data cable is carried, and realizes charging equipment to separate with power supply.Meanwhile wireless charging also have set for multi-section
It is standby to charge simultaneously, the advantages that environmental protection, waterproof.
The magnet coupled resonant type wireless electric energy transmission technology thinking that MIT in 2007 is proposed, sends out for wireless power transmission technology
A breakthrough in history is opened up, the proposition of the technology provides possibility for the wireless power transmission technology of distance in realization
Property.Energy is transferred by magnetic field on this technological essence, it by transmitting and receives line by the coupling in magnetic field between resonance coil
The wireless transmission of energy is realized in the resonance that circle generates.The coupling model of technique passes through the series connection of capacitance and inductance and in parallel group
It closes, forms four kinds of different topological structures, their own advantage can be given full play in different application occasion.
At present, magnetic coupling resonance is to study one of most popular method of wireless power transmission mode, is related to power electronics
High-frequency inversion, rectification in technology, the knowledge such as electromagnetic field, coupled wave theory in electromagnetism, since these knowledge are relatively more abstract, research
It often has no way of doing it when personnel just start.And existing designing scheme is complicated, majority is presented in the form of finished product, it is difficult to module
Change, cost is also higher, some students of especially colleges and universities have in vain it is theoretical and can not be with being actually combined.
The content of the invention
A kind of the problem of the utility model is difficulty teaching and research for magnetic coupling resonance knowledge point, it is proposed that nothing of frequency-adjustable
Line electric energy transmission experiment device by the changeability of modular design, flexible circuit structure and parameter, makes student clear
Ground understands the principle of magnet coupled resonant type, accomplishes to study in order to practise.
The technical solution of the utility model is：A kind of wireless power transmission experimental provision of frequency-adjustable, by transmitting terminal and
Receiving terminal two parts form, and transmitting terminal includes signal generating module, drive module, inverter module, transmitting module and DC power supply
Module；Receiving terminal includes receiving module, rectification filtering module and detection device and load；Drive module is by light-coupled isolation and drive
Dynamic circuit two parts composition, the PWM wave that signal generating module generates are defeated to driving circuit after light-coupled isolation；Driving circuit drives
Dynamic inverter module generates high-frequency alternating current, and high-frequency alternating current enters transmitting module, radiating circuit transmitting electric energy；Receiving module receives
To electric energy, it is input in rectification filtering module；The alternating current received is become direct current feeding detection apparatus by rectification filtering module
And load；The transmitting module and receiving module include resonant capacitance and inductance coil series circuit and resonant capacitance and electricity
Feel coils from parallel connection of coils circuit, access serial or parallel connection circuit is selected by toggle switch, the capacitance in serial or parallel connection circuit and electricity
Sense is plug-in.
The signal generating module is made of TL494CN chips with capacitance and adjustable resistance, and the one of the output of TL494CN chips
Metal-oxide-semiconductor in drive module is directly driven to PWM wave.
The detection device is the DC ammeter and light emitting diode with load in series.
The beneficial effects of the utility model are：The wireless power transmission experimental provision of the utility model frequency-adjustable, energy
Researcher is enough allowed intuitively to understand electromagnetic coupling resonance, the high-frequency inversion of power electronics and the knowledge of rectification.This experimental provision
There is good operability and be easily achieved, environmental protection, study related personnel wireless power transmission with very big
It helps.
Description of the drawings
Fig. 1 is the overall structure figure of the utility model；
Fig. 2 is the utility model signal generating circuit；
Fig. 3 constitutes resonant coupling circuit schematic diagram for the utility model transmitting module with receiving module；
Fig. 4 is the resonance circuit voltages oscillogram of the utility model transmitting terminal and receiving terminal.
Specific embodiment
A kind of wireless power transmission experimental provision of frequency-adjustable, is made of transmitting terminal and receiving terminal two parts.Transmitting terminal
Including signal generating module 1, drive module 2, inverter module 3, transmitting module 4 and DC power supplier 5, receiving terminal includes receiving
Module 6, rectification filtering module 7 and detection and load 8；Drive module 2 is made of light-coupled isolation and driving two parts, and module 1 is produced
Raw PWM wave defeated PWM wave that energy driving FET is generated to IR2110 chips after 6N137 chip light-coupled isolations；Inversion
Module 3 forms bridge circuit by four IRF840 metal-oxide-semiconductors, and the PWM wave exported through module 2 drives, and generates high-frequency alternating current, from
And cause the capacitance in transmitting module 4 that resonance occurs with inductance coil；DC power supplier 5 is supplied by bright latitude three-way power RT-50D
Electricity provides the direct current in the required 5V and 12V voltages of module 1 in circuit, 2 chips and module 3；4 He of transmitting module
Receiving module 6 selects access circuit by toggle switch, i.e. transmitter and receiver circuit selective resonance capacitance is connected with inductance coil
Or mode in parallel；Transmitting module 6 receives electric energy by capacitance and inductance resonance, is input in 7 circuit of rectification filtering module；
Rectification filtering module 7 is made of four Ultrafast recovery diode HER107 and filter capacitor, and the alternating current received is become straight
Galvanic electricity；The direct current in circuit is observed in detection device and load 8 by the brightness of ammeter and LED light.
The drive module 2 of transmitting terminal is made of light-coupled isolation and drive part, light-coupled isolation part 6N137 chips, is protected
The electrical isolation between signal generating circuit and IR2110 driving circuits has been demonstrate,proved, has prevented from causing signal because of experimenter's maloperation
Circuit chip is burnt.Diode is added in around IRF840 chips and resistance carries out chip protection, prevents electric current reflux from causing to damage
Evil.
Fig. 2 be the utility model signal generating circuit, be made of TL494CN chips with capacitance and resistance, frequency according to
Formula：It is calculated, here our capacitancesSelect the CBB electric capacity of model 152, adjustable electric resistance type
Number for 3296W-103, by can be calculated PWM wave frequency range as 73.33KHz~733.3KHz, if necessary to increase frequency
Rate then reduces adjustable electric resistance value, conversely, wanting that reducing frequency then increases adjustable electric resistance value, just can so reach us
The required frequency of experiment.Frequency if necessary to MHz can change 3296W-102 into trimmable resistance model, also can be by capacitance
Model is changed to 102 etc..In addition, a pair of of PWM wave of TL494CN chips output can directly drive metal-oxide-semiconductor, power amplifier electricity need not be added again
Road, far above the square wave generated by NE555 chips come the situation of driving FET in terms of Stability and dependability.
Receiving terminal is mainly made of receiving module, rectification filtering module and detection device and load.Wherein detection part
Direct current table is accessed in circuit, and available wire substitutes when not needed.LED light brightness is observed, is estimated with transmission range or frequency
Rate changes the variation of its efficiency of transmission；In addition load, convenient for calculating efficiency of transmission, is conducive to experimenter and preferably divided using resistance
Analysis.
Transmitting module as shown in Figure 3 constitutes resonant coupling circuit figure with receiving module, can lead in the utility model
It crosses toggle switch and selects different topological structures, in the present embodiment select emitter series resonance, receiver parallel resonance (S/
P mode)；Capacitance and inductance in resonant coupling circuit are plug-in, are inserted into circuit when needed, experiment is returned again later
It receives so that experiment material can be recycled.
The specific implementation step of the present embodiment is as follows：
A, after resonant capacitance and inductance are selected, according to formula：Calculate resonant frequency；
B, the present embodiment is computed resonant frequency as 93.5KHz, it is then determined that the PWM wave frequency that signal generating circuit generates
Scope；
C, capacitance and inductance are inserted into circuit, select topological structure, direct current table is accessed and detected by the present embodiment selection SP types
End；After detection circuit is errorless, DC power supplier is powered to chip and IRF840 pipes；
D, the brightness of ammeter registration and LED light is observed, adjusts adjustable resistance, module 2 occurs with oscilloscope measurement signal
9,10 pins of middle TL494CN chips, stop regulation resistance when frequency reaches calculated value；It then can be by changing transmission distance
From, then observed；
E, with the voltage waveform of oscilloscope measurement resonant coupling circuit, with the voltage and electric current of universal meter measurement load end,
Calculate the relation of transmission range and efficiency of transmission.
F, at the end of testing, DC power supplier is stopped power supply, and the plug type component in circuit is recycled, with
Just next time utilizes.
Fig. 4 is the resonance circuit voltages oscillogram of transmitting terminal and receiving terminal, when transmitting end-coil is with receiving end-coil apart
During 2cm, resonant frequency 93.5KHz, the both end voltage waveform of resonance circuit when termination power is SP forms goes up us from figure
The peak-to-peak value of transmitting terminal can be gone out for 9V, and the peak-to-peak value of receiving terminal is 8V, efficiency of transmission 88.88%, when distance increase
When, efficiency of transmission reduces, this experimental provision maximum transmission distance can reach 30cm.
Claims (3)
1. a kind of wireless power transmission experimental provision of frequency-adjustable, is made of transmitting terminal and receiving terminal two parts, transmitting terminal bag
Include signal generating module, drive module, inverter module, transmitting module and DC power supplier；Receiving terminal includes receiving module, whole
Flow filter module and detection device and load；Drive module is made of light-coupled isolation and driving circuit two parts, and signal occurs
The PWM wave that module generates is defeated to driving circuit after light-coupled isolation；Driving circuit driving inverter module generates high-frequency alternating current,
High-frequency alternating current enters transmitting module, radiating circuit transmitting electric energy；Receiving module receives electric energy, is input to rectifying and wave-filtering mould
The alternating current received is become direct current feeding detection apparatus and load by block, rectification filtering module；It is characterized in that, the hair
Penetrating module and receiving module includes resonant capacitance and inductance coil series circuit and resonant capacitance and inductance coil parallel circuit,
By toggle switch selection access serial or parallel connection circuit, capacitance and inductance in serial or parallel connection circuit are plug-in.
2. the wireless power transmission experimental provision of frequency-adjustable according to claim 1, which is characterized in that the signal occurs
Module is made of TL494CN chips with capacitance and adjustable resistance, and a pair of of PWM wave of TL494CN chips output directly drives driving
Metal-oxide-semiconductor in module.
3. the wireless power transmission experimental provision of frequency-adjustable according to claim 1, which is characterized in that the detection device
For the DC ammeter and light emitting diode with load in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720864325.3U CN207397558U (en) | 2017-07-17 | 2017-07-17 | The wireless power transmission experimental provision of frequency-adjustable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720864325.3U CN207397558U (en) | 2017-07-17 | 2017-07-17 | The wireless power transmission experimental provision of frequency-adjustable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207397558U true CN207397558U (en) | 2018-05-22 |
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ID=62417486
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720864325.3U Active CN207397558U (en) | 2017-07-17 | 2017-07-17 | The wireless power transmission experimental provision of frequency-adjustable |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111179704A (en) * | 2019-12-19 | 2020-05-19 | 北京中诚博睿教育科技有限公司 | Electronic wireless power transmission teaching aid for children intelligence development |
| CN113036944A (en) * | 2021-03-17 | 2021-06-25 | 陈林 | Radio energy transmission device |
-
2017
- 2017-07-17 CN CN201720864325.3U patent/CN207397558U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111179704A (en) * | 2019-12-19 | 2020-05-19 | 北京中诚博睿教育科技有限公司 | Electronic wireless power transmission teaching aid for children intelligence development |
| CN113036944A (en) * | 2021-03-17 | 2021-06-25 | 陈林 | Radio energy transmission device |
| CN113036944B (en) * | 2021-03-17 | 2024-03-19 | 陈林 | Wireless energy transmission device |
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