CN203039440U - Wireless electric energy transmission apparatus with controllable transmission power - Google Patents
Wireless electric energy transmission apparatus with controllable transmission power Download PDFInfo
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- CN203039440U CN203039440U CN2012207422725U CN201220742272U CN203039440U CN 203039440 U CN203039440 U CN 203039440U CN 2012207422725 U CN2012207422725 U CN 2012207422725U CN 201220742272 U CN201220742272 U CN 201220742272U CN 203039440 U CN203039440 U CN 203039440U
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- electric energy
- circuit
- magnetic coupling
- energy transmission
- wireless electric
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Abstract
The utility model discloses a wireless electric energy transmission apparatus with controllable transmission power. The apparatus comprises a square-wave generator, a digital controller, a driving circuit, a first switch tube, a second switch tube and a magnetic coupling resonance circuit. The square-wave generator generates a high frequency switch signal and transmits to the driving circuit. The driving circuit drives a first switch tube which is connected with the magnetic coupling resonance circuit to conduct after receiving the high frequency switch signal. Through the magnetic coupling resonance circuit, the electric energy is wirelessly transmitted to a load. The digital controller transmits a duty ratio control signal to the second switch tube so as to realize periodic turn off and closing of the second switch tube. A working period of the magnetic coupling resonance circuit is indirectly controlled so that the control to the wireless electric energy transmission power is achieved. The apparatus of the utility model possesses the following advantages that the structure is simple and cost is low. A common single chip microcomputer can realize all the functions of the circuit. The apparatus can be widely used in average power control during a process of charging a wireless power-supply electric automobile, wireless power supply heating equipment and the like.
Description
Technical field
It is wireless energy transform device that the utility model relates to, and is specifically related to a kind of magnetic coupling resonance device, and being used for to provide adjustable power for the receiving terminal load.
Background technology
Non-radiation type magnetic coupling resonance is as the novel radio power supply technique, produces very strong intercoupling by the resonance object that makes two same frequencys, and the receiving terminal of disresonance frequence is on every side had only more weak coupling.The magnetic coupling resonator system comprises emission resonance coil, secondary reception resonance coil and load.The magnetic coupling harmonic technology can be realized the energy transmission of middle distance (mid-range), and do not need to strengthen magnetic field intensity, and traditional magnetic coupling can only (generally at ten centimetres) obtain good relatively effect in short-range, and transmission range can only increase by strengthening magnetic field intensity.Simultaneously the magnetic resonance coupled system has an important advantage can penetrate the nonmetal barrier of various differences exactly, and to not influences of index such as the energy transmission efficiency of system, power.
In magnetic coupling resonance wireless power occasion, we need regulate its receivable average power (as electric automobile radio energy charging device, radio energy electromagnetic oven etc.) at load end.Therefore we need study Power Regulation method based on magnetic coupling resonance wireless power equipment and guarantee Electrical Safety or produce a desired effect.
The applicant on November 26th, 2012 submitted that an application number is 201210488523.6 to, name is called the application for a patent for invention of " a kind of magnetic coupling resonance wireless power power control system ".In this part patent application, a kind of magnetic coupling resonance wireless power power control system is disclosed, comprise control circuit, drive circuit, power supply, switching tube, magnetic coupling resonant circuit and current rectifying and wave filtering circuit; Wherein, control circuit is given drive circuit according to the control law output high-frequency signal of setting; The high-frequency signal of drive circuit reception control circuit, for switching tube provides high-frequency work required driving force, the electric energy of power supply is passed to current rectifying and wave filtering circuit by the magnetic coupling resonant circuit, after current rectifying and wave filtering circuit carries out rectification, filtering, provide direct current energy for load.
Above-mentioned application doubly is a control cycle by the M in emission resonance magnetic field oscillation cycle in the definition magnetic coupling resonant circuit in control circuit, in one-period, digital control chip directly is provided at the signal of N magnetic field harmonic period work for drive circuit, back M-N cycle cut-off signals can obtain different average powers at magnetic coupling resonant circuit receiving coil end.But realize that in control circuit this control strategy need rely on expensive digital programmable control chip, the real time high-speed disposal ability of chip is had relatively high expectations.
The utility model content
Technical problem to be solved in the utility model is at magnetic coupling resonance wireless power application scenario, proposes the controlled wireless electric energy transmission device of through-put power low-cost, high reliability.
The utility model is for solving the problems of the technologies described above by the following technical solutions:
The wireless electric energy transmission device that a kind of through-put power is controlled, comprise square-wave generator, digitial controller, drive circuit, first switching tube, second switch pipe, magnetic coupling resonant circuit, wherein said square-wave generator produces high-frequency switching signal and is transferred to drive circuit, after drive circuit receives high-frequency switching signal, drive the first switching tube conducting that is connected with the magnetic coupling resonant circuit, by the magnetic coupling resonant circuit electric energy is wirelessly transmitted to load; The drain electrode of described second switch pipe is connected with the signal input part of drive circuit, and the grid of second switch pipe is connected with the signal output part of digitial controller, the source ground of second switch pipe; Digitial controller is realized the periodic shutoff of second switch pipe and closed to second switch pipe transmission duty cycle control signal, controls the work period of magnetic coupling resonant circuit indirectly, thereby reaches the control of wireless power transmission power.
Further prioritization scheme as the controlled wireless electric energy transmission device of a kind of through-put power of the present utility model: described magnetic coupling resonant circuit is made up of radiating circuit and receiving circuit, and wherein radiating circuit is made of DC power supply, the transmitting coil L1 that connects with the output of DC power supply and the first resonant capacitance C1 in parallel with transmitting coil L1; Described receiving circuit is made of receiving coil L2 parallel with one another, the second resonant capacitance C2.
Further prioritization scheme as the controlled wireless electric energy transmission device of a kind of through-put power of the present utility model: the resonance frequency of described receiving coil is identical with the resonance frequency of transmitting coil; The magnetic field that utilizes receiving coil and transmitting coil to produce has identical frequency of oscillation and produces magnetic resonance, for load provides energy.
Further prioritization scheme as the controlled wireless electric energy transmission device of a kind of through-put power of the present utility model: described square-wave generator is 555 chips.
Further prioritization scheme as the controlled wireless electric energy transmission device of a kind of through-put power of the present utility model: it is the AD89S51 singlechip chip that described digitial controller adopts model.
Further prioritization scheme as the controlled wireless electric energy transmission device of a kind of through-put power of the present utility model: the model of described driving chip is IR2100.
The utility model adopts above technical scheme compared with prior art, has following technique effect:
Emission resonance magnetic field oscillation number in the utility model definition one-period is realized control to the load end average power by being adjusted in duty ratio in the one-period; Duty ratio D is 0 o'clock, and wireless power transmission power is 0; Duty ratio D is 1 o'clock, and wireless power transmission power is rated power, can obtain corresponding power corresponding to different duty ratio (between 0 and 1), can provide desired average power for the load receiving terminal thus.
Be that 201210488523.6 patent application is compared with application number in the background technology, the utility model only need adopt 555 cheap chips or other can produce the fixedly circuit of high frequency square wave output, defining M high-frequency square-wave signal is a control cycle, only need to rely on common low-speed digital process chip and do by N high-frequency square-wave signal control switch plumber of duty ratio control, M-N high-frequency square-wave signal control switch pipe closed.Processing capability in real time to chip requires decline f
s/ M doubly, f wherein
sFrequency for high frequency square wave.
In sum, the utlity model has advantage simple in structure, that cost is low, common single-chip microcomputer just can be realized this circuit repertoire.Occasions such as the average power control in the time of can being widely used in the wireless power charging electric vehicle, wireless power firing equipment.
Description of drawings
Fig. 1 is circuit diagram of the present utility model.
Electromagnetic wave when Fig. 2 is the magnetic coupling resonance operate as normal of the utility model preferred embodiment transmits energy.
Principle schematic when Fig. 3 is a kind of magnetic coupling resonance device transmitted power duty ratio D=0.5 of the utility model preferred embodiment.
Embodiment
Below in conjunction with accompanying drawing the technical solution of the utility model is described in further detail:
As shown in Figure 1, the utility model comprises square-wave generator, digitial controller, drive circuit, first switching tube, second switch pipe, magnetic coupling resonant circuit; Wherein the magnetic coupling resonant circuit comprises radiating circuit and receiving circuit, and radiating circuit is by DC power supply V1, switching tube Q1, and transmitting coil L1, transmitting coil resonant capacitance C1 constitutes.Receiving circuit is receiving coil L2, receiving coil resonant capacitance C2 and load.Wherein the inductance value L1 of transmitting coil is identical with receiving coil inductance value L2, C1 is identical with C2 for the resonant capacitance amount; The drain electrode of described second switch pipe is connected with the signal input part of drive circuit, and the grid of second switch pipe is connected with the signal output part of digitial controller, the source ground of second switch pipe.
Square-wave generator and digitial controller produce two path control signal respectively:
First via control signal is the high-frequency switching signal that is produced, also exported to all the time drive circuit by square-wave generator; The cycle of described high-frequency switching signal is identical with the electromagnetic field couples harmonic period of magnetic coupling resonant circuit;
The second tunnel control signal is the duty cycle control signal that is exported to the second switch pipe by digitial controller; The electromagnetic field couples harmonic period of M magnetic coupling resonant circuit is made as a control cycle T, the duty ratio D=N/M of described duty cycle control signal, wherein, M, N are the natural number greater than 0, N＜M;
By the action of described digitial controller output duty cycle control signal control second switch pipe, make the switching tube of winning M the N of high-frequency switching signal in a cycle cycling, close in the cycle at all the other M-N, thereby realize that wireless power transmission is to the control of load-side average power.
When real work, square-wave generator produces high-frequency switching signal and is transferred to drive circuit, after drive circuit receives high-frequency switching signal, drive the switching tube Q1 conducting that is connected with the magnetic coupling resonant circuit, by the magnetic coupling resonant circuit electric energy is wirelessly transmitted to load; Digitial controller is realized the periodic shutoff of switching tube Q2 and closed to switching tube Q2 transmission duty cycle control signal, controls the work period of magnetic coupling resonant circuit indirectly, thereby reaches the control of wireless power transmission power.
The concrete parameter of preferred embodiment of the present utility model is as follows: input voltage V1 is 24VDC; Transmitting coil L1 and receiving coil L2 resonant inductance amount are 22uH; Resonant capacitance value C1 is 470nF; Switching tube Q1 is IPB108N15N3G; Square-wave generator is 555; The digitial controller chip is Chip Microcomputer A 89S51; The driving chip is IR2100.
Square-wave generator and digitial controller are exported high-frequency signal and duty cycle control signal respectively.The resonance frequency of former limit transmitting coil is
The high-frequency signal of drive circuit recipient wave producer, and for switching tube Q1 provides high-frequency work required driving force, the switching frequency that provide to switching tube Q1 this moment is similarly f
1Because at receiving terminal coil L
1C
1=L
2C
2, so the L2 coil can receive the magnetic resonance energy delivered and provide electric energy for load.The conducting of duty cycle control signal control switch pipe Q2 realizes the average power control of wireless power transmission.
As shown in Figure 2, it has provided magnetic coupling resonance magnetic field and has transmitted the energy feature schematic diagram.For convenient embodiment thought of the present utility model, only define per 8 magnetic field resonance oscillations cycle f among Fig. 2
1Be the defined control cycle of this patent, i.e. T=8f
1In fact the utility model can define any a plurality of magnetic fields resonance oscillations cycle as a control cycle to reach best control effect.
As shown in Figure 3, it has provided (D=0.5) schematic diagram under a kind of working condition of preferred embodiment of the present utility model.Square-wave generator provides high-frequency signal f all the time among Fig. 3
1, realize duty ratio control by digitial controller control switch pipe Q2 simultaneously.When switching tube Q2 disconnects, high-frequency signal f
1By drive circuit switching tube Q1 is carried out HF switch control, the resonance frequency of former limit transmitting coil is
Transmit radio energy this moment; When switching tube Q2 was closed, drive circuit did not receive the driving signal, and this moment, switching tube Q1 was in off state all the time, and can not transmit radio energy this moment.Shown in Figure 3ly be defined in 8 electromagnetic waves and have only 4 periodic transfer radio energies, the i.e. situation of D=0.5 in cycle of oscillation.
By above analysis as can be known, the multiple in an electromagnetic viscosimeter cycle is a control cycle to the utility model by defining arbitrarily, carries out duty ratio control in the control cycle of definition, can realize the control to the expectation average transmission power.By such design, just can reduce the cost of wireless electric energy transmission device greatly, improved system reliability.
Claims (6)
1. wireless electric energy transmission device that through-put power is controlled, it is characterized in that: comprise square-wave generator, digitial controller, drive circuit, first switching tube, second switch pipe, magnetic coupling resonant circuit, wherein said square-wave generator produces high-frequency switching signal and is transferred to drive circuit, after drive circuit receives high-frequency switching signal, drive the first switching tube conducting that is connected with the magnetic coupling resonant circuit, by the magnetic coupling resonant circuit electric energy is wirelessly transmitted to load; The drain electrode of described second switch pipe is connected with the signal input part of drive circuit, and the grid of second switch pipe is connected with the signal output part of digitial controller, the source ground of second switch pipe; Digitial controller is realized the periodic shutoff of second switch pipe and closed to second switch pipe transmission duty cycle control signal, controls the work period of magnetic coupling resonant circuit indirectly, thereby reaches the control of wireless power transmission power.
2. the controlled wireless electric energy transmission device of a kind of through-put power according to claim 1, it is characterized in that: described magnetic coupling resonant circuit is made up of radiating circuit and receiving circuit, and wherein radiating circuit is made of DC power supply, the transmitting coil L1 that connects with the output of DC power supply and the first resonant capacitance C1 in parallel with transmitting coil L1; Described receiving circuit is made of receiving coil L2 parallel with one another, the second resonant capacitance C2.
3. the controlled wireless electric energy transmission device of a kind of through-put power according to claim 2, it is characterized in that: the resonance frequency of described receiving coil is identical with the resonance frequency of transmitting coil.
4. the controlled wireless electric energy transmission device of a kind of through-put power according to claim 1, it is characterized in that: described square-wave generator is 555 chips.
5. the controlled wireless electric energy transmission device of a kind of through-put power according to claim 1 is characterized in that: it is the AD89S51 singlechip chip that digitial controller adopts model.
6. the controlled wireless electric energy transmission device of a kind of through-put power according to claim 1 is characterized in that: the model that drives chip is IR2100.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207422725U CN203039440U (en) | 2012-12-30 | 2012-12-30 | Wireless electric energy transmission apparatus with controllable transmission power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207422725U CN203039440U (en) | 2012-12-30 | 2012-12-30 | Wireless electric energy transmission apparatus with controllable transmission power |
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| Publication Number | Publication Date |
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| CN203039440U true CN203039440U (en) | 2013-07-03 |
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|---|---|---|---|
| CN2012207422725U Expired - Lifetime CN203039440U (en) | 2012-12-30 | 2012-12-30 | Wireless electric energy transmission apparatus with controllable transmission power |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103078414A (en) * | 2012-12-30 | 2013-05-01 | 南京邮电大学 | Wireless electric energy transmission device with controllable transmission power and method |
| CN107733099A (en) * | 2017-10-31 | 2018-02-23 | 上海交通大学 | Enjoy a double blessing bridge radio energy transmission system synchronous method |
| RU2691528C1 (en) * | 2018-04-23 | 2019-06-14 | Анатолий Иванович Крохин | Contactless power transmission system for vehicle doors |
-
2012
- 2012-12-30 CN CN2012207422725U patent/CN203039440U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103078414A (en) * | 2012-12-30 | 2013-05-01 | 南京邮电大学 | Wireless electric energy transmission device with controllable transmission power and method |
| CN107733099A (en) * | 2017-10-31 | 2018-02-23 | 上海交通大学 | Enjoy a double blessing bridge radio energy transmission system synchronous method |
| RU2691528C1 (en) * | 2018-04-23 | 2019-06-14 | Анатолий Иванович Крохин | Contactless power transmission system for vehicle doors |
| WO2019209140A1 (en) * | 2018-04-23 | 2019-10-31 | Krokhin Anatolii Ivanovich | Contactless electrical energy transmission system for vehicle doors |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160310 Address after: Laishan Mingda road 264000 Shandong city of Yantai province No. 11 Patentee after: ZONECHARGE WIRELESS POWER TECHNOLOGY Co.,Ltd. Address before: 210003 Gulou District, Jiangsu, Nanjing new model road, No. 66 Patentee before: NANJING University OF POSTS AND TELECOMMUNICATIONS |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210319 Address after: 518000 room 133-134, No.1 International Students (Longgang) Pioneer Park, Longcheng street, Longgang District, Shenzhen City, Guangdong Province Patentee after: ZONECHARGE (SHENZHEN) WIRELESS POWER TECHNOLOGY Co.,Ltd. Address before: 264000 Mingda West Road, Laishan District, Yantai, Shandong Province, No. 11 Patentee before: ZONECHARGE WIRELESS POWER TECHNOLOGY Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130703 |