CN106130194A - Radio energy transmission system and wireless power transmission control method - Google Patents
Radio energy transmission system and wireless power transmission control method Download PDFInfo
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Abstract
The present invention proposes a kind of radio energy transmission system and wireless power transmission control method, and this radio energy transmission system can solve the problem that the equipment that is electrically charged causes transmitting terminal or receiving terminal to burn under the conditions of quickly taking away or quickly put back to etc..This system can detect whether wireless receiving end equipment enters or move apart the working region of wireless transmitting terminals in real time, and can control and adjust operating frequency and the output gain of transmitting end equipment according to the state of wireless receiving end equipment, avoid the occurrence of instantaneous overvoltage or over-current state, make the work that radio energy transmission system is safer, stable.Above-mentioned radio energy transmission system and control method include corresponding wireless transmission and receiving module, and in transmitting terminal MCU judge sampled signal and communication signal and the step controlled.
Description
Technical field
The invention belongs to electric energy transmission field, particularly relate to a kind of electric energy transmission system utilizing wireless radio transmission.
Background technology
Wireless power transmission is a kind of technology being carried out electric energy transmission by external electromagnetic field coupling, and its major advantage is not
Need plug, easy to use；Electric spark will not be produced, can use in inflammable and explosive industrial environment；Can be at water
In carry out energy transmission, may apply in the submerged applications such as marine settings.Radio energy transmission system mainly comprises two parts:
A part is energy transmission, by transformation of electrical energy, from transmitting terminal, electric energy is wirelessly transmitted to receiving terminal；Another part is communication
The transmission of signal, has been mainly used in the information between transmitting terminal and reception equipment and has controlled mutual, it is ensured that whole system has worked
Safety and stability.
At present, the communication mode being applied to radio energy transmission system mainly has two kinds:
One is to use multi-carrier modulation scheme, modulation control information on the coupling coil of transmission energy, and by modulation
Unidirectional or two-way communication with demodulation circuit realiration transmitting terminal with receiving terminal.This method is mainly used in low power radio
In energy transmission system, the Control on Communication mode using carrier modulation is sensitive for the amplitude com parison of first-harmonic, works as wireless power transmission
When the power of system or excursion are bigger, there is obvious limitation in this method；
Another method be use single radio communication channel, use radio communication mode, it is achieved transmitting terminal with
The two-way communication of receiving terminal.This scheme, owing to communication channel is independent of energy-transmission channel, has control more flexible, adapts to merit
The advantages such as rate wider grade, can apply in powerful radio energy transmission system.But, when using independent channel radio
When letter channel controls radio energy transmission system, if quickly remove and quickly put back to receiving device continuously, often go out
Now burn the phenomenon of wireless power transmission equipment.
The main cause producing fault when quickly removing and quickly put back to receiving device continuously is: due to wireless radiofrequency
The effective propagation path (generally tens centimetres to several meters) of communication system is generally all far longer than the work of wireless power transmission
Distance (the most several to ten several centimetres).When receiving device is quickly taken away, energy transmission is already off, but
Radio communication is also in effective working distance (power down of usual receiving terminal will not be carried out at once, and has one period of time delay).
In this case, transmitting terminal also may proceed to the status information returned according to receiving terminal, continues to tune up output gain, causes launching
The transient exciting current of end equipment is the biggest.When receiving device is quickly put back to again, now transmitting terminal is exactly in maximum
Output gain, now outfan gain-adjusted to normal level is needed certain time delay by Control on Communication, this transition
During receiving terminal and transmitting end equipment be at instantaneous overvoltage or over-current state, may result in burning apparatus time serious.
Therefore, in order to improve stability and the safety of system, it is desirable to have solution the problems referred to above of effect.
Summary of the invention
In order to solve problem above, the invention provides a kind of radio energy transmission system and wireless power transmission controls
Method, this invention is provided with proximity sensor in wireless transmitting terminals, it is achieved that the prison that wireless receiving end equipment is removed or put into
Survey, control and adjust operating frequency and the output gain of transmitting end equipment according to the state of wireless receiving end equipment, make radio
The work that system is safer, stable can be transmitted.
In order to achieve the above object, the technical solution used in the present invention is:
A kind of radio energy transmission system, including being connected to the wireless transmitting terminals of electrical network, and can receive wireless transmitting terminals
The wireless receiving end of electric power signal, wireless transmitting terminals includes the transmitting coil that can transmit radio energy, and can receive communication letter
Number communication receipt module；Load is connected outside wireless receiving end, including receiving in transmitting coil the receiving coil launching electric energy, with
And receiving coil can be exported electric energy be converted into communication signal transmission to the communication transmitter module of communication receipt module, wireless transmit
End also includes transmitting terminal current rectifying and wave filtering circuit, and the outfan of transmitting terminal current rectifying and wave filtering circuit connects inverter circuit, transmitting coil
Connecting the outfan of inverter circuit, being provided with in transmitting coil can induced emission coil and the proximity sensing of receiving coil distance
Device, proximity sensor forms induced signal according to transmitting coil with receiving coil distance, and transmitting coil connects transmitting terminal
MCU, to receive the induced signal that proximity sensor is formed；Transmitting terminal MCU is electrically connected the outfan of communication receipt module, to receive
Communication signal in communication receipt module, transmitting terminal MCU is electrically connected the input of inverter circuit, to control conversion in inverter circuit
Ac frequency；Transmitting terminal MCU include receiving induced signal and the judge module of communication signal and with judge module electricity
Control module even, it is judged that module according to induced signal judge wireless receiving end whether in working region, as in working region
In, then communication signal being converted into and judge that signal sends to control module, control module is converted into control according to this judgement signal
Signal controls the operating frequency of wireless transmitting terminals；If not in working region, then form reset in judge module and judge signal, and will
This reset judges that signal sends to control module, according to this reset, control module judges that signal is converted into control signal and controls wireless
Transmitting terminal is in holding state.
As the further optimization of the present invention, receiving coil is built-in with the sensing that can strengthen proximity sensor induction
Thing.
As the further optimization of the present invention, the receiving coil of wireless receiving end connects current rectifying and wave filtering circuit, and rectification is filtered
The outfan of wave circuit connects output voltage sampling circuit, to gather the output voltage after current rectifying and wave filtering circuit rectification, output electricity
The outfan of pressure sample circuit connects receiving terminal MCU, receiving terminal MCU and connects communication transmitter module, with by the numeral letter after conversion
Number transmission to communication transmitter module formed communication signal.
As the further optimization of the present invention, the outfan of the current rectifying and wave filtering circuit of wireless receiving end connects exportable perseverance
Determining the mu balanced circuit of voltage, the outfan of mu balanced circuit connects load.
As the further optimization of the present invention, proximity sensor is arranged in the transmitting coil that can avoid the interference of electromagnetic field
At the heart.
Present invention also offers a kind of wireless power transmission control method, use above-mentioned radio energy transmission system, including
Following steps:
S1: start radio energy transmission system；
S2: radio energy transmission system is standby with standby frequency；
S3: proximity sensor induction wireless transmitting terminal forms induced signal with the distance of wireless receiving end, and will sensing
Signal transmits to transmitting terminal MCU；
S4: receiving terminal MCU judges whether wireless receiving end enters working region, if receiving terminal MCU judges wireless receiving
End has been enter into working region, then carry out S5；Otherwise, S3 is returned.
Further as the present invention optimizes, further comprising the steps of:
S5: by the communication initialization of radio energy transmission system, now transmitting coil works according to predeterminated frequency scope；
S6: receiving coil receives the electric energy of transmitting coil transmission；
The rectified filtered output voltage signal of electric energy of S7: transmitting coil output is transferred to receiving terminal MCU by logical
Letter transmitter module forms communication signal, and communication receipt module receives this communication signal, and sends this communication signal to transmitting terminal
MCU；
S8: transmitting terminal MCU according to induced signal judge wireless receiving end whether in working region, as judged wireless receiving
End in working region, then performs S9；No, then perform S10；
S9: transmitting terminal MCU regulates the operating frequency of wireless transmitting terminals according to communication signal, is then back to perform S6；
S10: stop energy and transmit and the operating frequency of the wireless transmitting terminals that resets, is then back to perform S2.
Compared with prior art, advantages of the present invention and having the active effect that
1, the radio energy transmission system of the present invention, it is possible to real time monitoring wireless receiving device is removed or put into, and will
This induced signal transmits to transmitting terminal MCU, and transmitting terminal MCU controls according to induced signal and signal of communication and adjust transmitting terminal to set
Standby operating frequency and output gain, make the work that radio energy transmission system is safer, stable.
2, the radio energy transmission system of the present invention, has judge module in transmitting terminal MCU, and then according to judge module shape
The control signal become controls the operating frequency of wireless transmitting terminals, has intelligentized feature；
3, the wireless power transmission control method of the present invention, when wireless receiving end and wireless transmitting terminals be not in working region
Time, wireless transmitting terminals can be made to be in holding state, more energy efficient, meanwhile, enter to work at wireless transmitting terminals and wireless receiving end
During region, can work according to predeterminated frequency, be not result in wireless receiving end and wireless transmitting terminals equipment be in instantaneous overvoltage or
Over-current state, protects equipment.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of radio energy transmission system of the present invention；
Fig. 2 is the flow chart of wireless power transmission control method of the present invention.
Detailed description of the invention
Below, by exemplary embodiment, the present invention is specifically described.It should be appreciated, however, that do not entering one
In the case of step narration, element, structure and features in an embodiment can also be advantageously incorporated into other embodiments
In.
See Fig. 1, be the schematic diagram of radio energy transmission system in the present invention.As it is shown in figure 1, the radio energy of the present invention
Transmission system, including being connected to the wireless transmitting terminals of electrical network, and can receive the wireless receiving end of wireless transmitting terminals electric power signal,
Wireless transmitting terminals includes the transmitting coil that can transmit radio energy, and can receive the communication receipt module of communication signal.Wireless
Load is connected outside receiving terminal, including receiving in transmitting coil the receiving coil launching electric energy, and can be by receiving coil output electricity
Communication signal can be converted into and transmit the communication transmitter module to communication receipt module, by above-mentioned transmitting coil and receiving coil
Arranging, can realize the transmission of radio energy, the receiving coil at this is by the energy of magnetic field coupling pickup transmitting coil；And it is above-mentioned
Communication transmitter module and the setting of communication receipt module, it is achieved that the communication transfer between wireless transmission end and wireless receiving end,
Setting up of communication transfer is conducive to the demand that loads according to wireless receiving end of wireless transmitting terminals to change in good time.
With continued reference to Fig. 1, wireless transmitting terminals also includes the AC rectification transmitted in electrical network being formed galvanic
Penetrating end current rectifying and wave filtering circuit, the outfan of transmitting terminal current rectifying and wave filtering circuit connects the inversion that unidirectional current can be converted to alternating current
Circuit, transmitting coil connects the outfan of inverter circuit, and being provided with in transmitting coil can induced emission coil and receiving coil distance
Proximity sensor, proximity sensor forms induced signal according to transmitting coil and receiving coil distance, and transmitting coil is even
It is connected to transmitting terminal MCU, to receive the induced signal that proximity sensor is formed；Transmitting terminal MCU is electrically connected the defeated of communication receipt module
Going out end, to receive the communication signal in communication receipt module, transmitting terminal MCU is electrically connected the input of inverter circuit, to control inversion
The ac frequency of conversion in circuit；Transmitting terminal MCU include receiving induced signal and the judge module of communication signal and
The control module being electrically connected with judge module, it is judged that module according to induced signal judge wireless receiving end whether in working region,
As in working region, being then converted into by communication signal and judge that signal sends to control module, control module is believed according to this judgement
Number it is converted into control signal and controls the operating frequency of wireless transmitting terminals；If not in working region, then formed in judge module and reset
Judge signal, and this reset judging, signal sends to control module, according to this reset, control module judges that signal is converted into control
Signal processed controls wireless transmitting terminals and is in holding state.
Drive circuit is had, with the control letter that will be formed in control module it addition, be connected between transmitting terminal MCU and inverter circuit
Number control inverter circuit by drive circuit.
It should be noted that heretofore described working region is centered by sending coil, in suitable vertical work
Under the conditions of making distance and horizontal-shift, and ensure the maximum functional region of system effectiveness and safe and reliable work.
It addition, above-mentioned proximity sensor is for removing or entrance state by cognitive radio receiving terminal, as Hall magnetic field passes
Sensor, GMR giant magneto-resistance sensor, infrared sensor etc..It addition, in order to the induction making proximity sensor is more preferable, receive
The inductor strengthening proximity sensor sensing effect can be placed with on coil.Illustrate, as permanent magnet, ferromagnetic metal,
Visual indicia etc..
Meanwhile, the present invention is provided with electrical energy conversion circuit in wireless transmitting terminals and wireless receiving end.Illustrate:
The receiving coil of wireless receiving end connects current rectifying and wave filtering circuit, and the outfan of current rectifying and wave filtering circuit connects output voltage sampling electricity
Road, to gather the output voltage after current rectifying and wave filtering circuit rectification, the outfan of output voltage sampling circuit connects receiving terminal MCU,
Receiving terminal MCU connects communication transmitter module, so that the digital data transmission after conversion is formed communication signal to communication transmitter module.
Connecting load outside wireless receiving end, this load can be charging load or supply electric loading, typically when for load supplying, all
Needing to export burning voltage, therefore, the outfan of the current rectifying and wave filtering circuit of wireless receiving end connects exportable constant voltage
Mu balanced circuit, the outfan of mu balanced circuit connects load.
Preferred embodiment, the transmitting coil in the present invention can be provided with through hole in centre, this through hole interference of electromagnetic field
More weak, proximity sensor may be disposed at the transmitting coil center that can avoid the interference of electromagnetic field.
See the flow chart that Fig. 2, Fig. 2 are wireless power transmission control methods of the present invention.As in figure 2 it is shown, the nothing of the present invention
Line electric energy transfer control method, uses above-mentioned radio energy transmission system, comprises the following steps:
S1: start radio energy transmission system；
S2: radio energy transmission system is standby with standby frequency, the standby frequency at this refers to that system can be pacified when zero load
The frequency of full work；
S3: proximity sensor induction wireless transmitting terminal forms induced signal with the distance of wireless receiving end, and will sensing
Signal transmits to transmitting terminal MCU；
According to induced signal, S4: receiving terminal MCU judges whether wireless receiving end enters working region, if receiving terminal MCU
Judge that wireless receiving end has been enter into working region, then proceed S5；Otherwise, S3 is returned.
By above-mentioned steps, the initial shape in wireless receiving end moves into the working region of wireless transmitting terminals can be prevented
There is instantaneous overvoltage or over-current state, and then burning apparatus in state.
In the present invention, also may be implemented in communication process, wireless receiving end into and out cross stream or overvoltage protection, tool
Body, further comprising the steps of:
S5: by the communication initialization of radio energy transmission system, now transmitting coil works according to predeterminated frequency, at this
Communication initialization refers to that communication transmitter module starts transmission communication signal with communication receiver module, and predeterminated frequency refers to should in use
The original frequency set during radio energy transmission system；
S6: receiving coil receives the electric energy of transmitting coil transmission；
It is transferred to receiving terminal MCU after the rectified filtering of electric energy of S7: transmitting coil output formed by communication transmitter module
Communication signal, communication receipt module receives this communication signal, and sends this communication signal to transmitting terminal MCU；
S8: transmitting terminal MCU according to induced signal judge wireless receiving end whether in working region, as judged wireless receiving
End in working region, then performs S9；No, then perform S10；
S9: transmitting terminal MCU regulates the operating frequency of wireless transmitting terminals according to communication signal, is then back to perform S6；
S10: stop energy and transmit and the operating frequency of the wireless transmitting terminals that resets, is then back to perform S2.
By above-mentioned steps, wireless power transmission control method of the present invention, it is possible to detect whether wireless receiving end moves into
Or the working region of removal wireless transmitting terminals, it is not result in that wireless receiving end and wireless transmitting terminals the overvoltage of transient state occur or cross stream
State, and then cause burning of transmitting terminal or receiving device.
Claims (7)
1. a radio energy transmission system, including being connected to the wireless transmitting terminals of electrical network, and can receive wireless transmitting terminals electricity
The wireless receiving end of energy, wireless transmitting terminals includes the transmitting coil that can transmit radio energy, and can receive the logical of communication signal
Letter receiver module；Load is connected outside wireless receiving end, including receiving in transmitting coil the receiving coil launching electric energy, and can be by
Receiving coil output electric energy is converted into communication signal and transmits the communication transmitter module to communication receipt module, it is characterised in that:
Wireless transmitting terminals also includes transmitting terminal current rectifying and wave filtering circuit, and the outfan of transmitting terminal current rectifying and wave filtering circuit connects inversion electricity
Road, transmitting coil connects the outfan of inverter circuit, and being provided with in transmitting coil can induced emission coil and receiving coil position
Proximity sensor, proximity sensor forms induced signal, proximity sensor according to transmitting coil with receiving coil distance
Connect and have transmitting terminal MCU, to receive the induced signal that proximity sensor is formed；Transmitting terminal MCU is electrically connected communication receipt module
Outfan, to receive the communication signal in communication receipt module, transmitting terminal MCU is electrically connected the control end of inverter circuit, inverse to control
The high-frequency alternating current frequency of conversion in power transformation road；
Transmitting terminal MCU includes receiving induced signal and the judge module of communication signal and the control being electrically connected with judge module
Module, it is judged that according to induced signal, module judges that wireless receiving end, whether in working region, as in working region, then will lead to
News signal is converted into and judges that signal sends to control module, and control module is converted into control signal according to this judgement signal and controls nothing
The operating frequency of line transmitting terminal；If not in working region, then form reset in judge module and judge signal, and this reset is judged
Signal sends to control module, according to this reset, control module judges that signal is converted into control signal control wireless transmitting terminals and is in
Holding state.
Radio energy transmission system the most according to claim 1, it is characterised in that: receiving coil is built-in with and can strengthen proximity
The inductor of sensor sensing intensity.
Radio energy transmission system the most according to claim 1 or claim 2, it is characterised in that: the receiving coil of wireless receiving end is even
Being connected to current rectifying and wave filtering circuit, the outfan of current rectifying and wave filtering circuit connects output voltage sampling circuit, to gather current rectifying and wave filtering circuit
Output voltage after rectification, the outfan of output voltage sampling circuit connects receiving terminal MCU, receiving terminal MCU and connects communication transmitting
Module, to form communication signal by the digital data transmission after conversion to communication transmitter module.
Radio energy transmission system the most according to claim 3, it is characterised in that: the current rectifying and wave filtering circuit of wireless receiving end
Outfan connects the mu balanced circuit having exportable constant voltage, and the outfan of mu balanced circuit connects load.
5. according to radio energy transmission system described in claim 1 or 2 or 4, it is characterised in that: proximity sensor is arranged at can
Avoid the transmitting coil center of the interference of electromagnetic field.
6. a wireless power transmission control method, uses any one radio energy transmission system in claim 1-5, and it is special
Levy and be: comprise the following steps:
S1: start radio energy transmission system；
S2: radio energy transmission system is standby with standby frequency；
S3: proximity sensor induction wireless transmitting terminal forms induced signal with the position of wireless receiving end, and by induced signal
Transmit to transmitting terminal MCU；
S4: transmitting terminal MCU judge wireless receiving end whether in working region, if receiving terminal MCU has judged wireless receiving end
Enter to working region, then carry out S5；Otherwise, S3 is returned.
Wireless power transmission control method the most according to claim 6, it is characterised in that further comprising the steps of:
S5: by the communication initialization of radio energy transmission system, now transmitting coil works according to predeterminated frequency；
S6: receiving coil receives the electric energy of transmitting coil transmission；
The rectified filtered output voltage signal of electric energy of S7: transmitting coil output is transferred to receiving terminal MCU, is sent out by communication
Penetrating module and form communication signal, communication receipt module receives this communication signal, and sends this communication signal to transmitting terminal MCU；
S8: transmitting terminal MCU according to induced signal judge wireless receiving end whether in working region, as judged, wireless receiving end exists
In working region, then perform S9；No, then perform S10；
S9: transmitting terminal MCU regulates the operating frequency of wireless transmitting terminals according to communication signal, is then back to perform S6；
S10: stop electric energy and transmit and the operating frequency of the wireless transmitting terminals that resets, is then back to perform S2.
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Cited By (11)
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| CN106410979A (en) * | 2016-12-05 | 2017-02-15 | 青岛鲁渝能源科技有限公司 | Wireless electric energy transmission system and control method thereof |
| CN106410980A (en) * | 2016-12-05 | 2017-02-15 | 青岛鲁渝能源科技有限公司 | Wireless power energy transmission system and wireless power energy transmission control method |
| CN106451812A (en) * | 2016-12-05 | 2017-02-22 | 青岛鲁渝能源科技有限公司 | Awakening and sleeping control methods for wireless power transmission system |
| CN106451811A (en) * | 2016-12-05 | 2017-02-22 | 青岛鲁渝能源科技有限公司 | Wireless power transmission system having abnormal state protection function and wireless power transmission method |
| CN106532978A (en) * | 2016-12-05 | 2017-03-22 | 青岛鲁渝能源科技有限公司 | Wireless electric energy transmission system and wireless electric energy transmission method |
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| CN106451811B (en) * | 2016-12-05 | 2023-06-20 | 青岛鲁渝能源科技有限公司 | Wireless power transmission system and method with abnormal state protection function |
| CN106410979A (en) * | 2016-12-05 | 2017-02-15 | 青岛鲁渝能源科技有限公司 | Wireless electric energy transmission system and control method thereof |
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| CN106410979B (en) * | 2016-12-05 | 2019-03-12 | 青岛鲁渝能源科技有限公司 | Radio energy transmission system and its control method |
| CN106451812A (en) * | 2016-12-05 | 2017-02-22 | 青岛鲁渝能源科技有限公司 | Awakening and sleeping control methods for wireless power transmission system |
| CN106998101A (en) * | 2017-04-19 | 2017-08-01 | 青岛鲁渝能源科技有限公司 | Coupling device and radio energy transmission system |
| CN107124047A (en) * | 2017-06-27 | 2017-09-01 | 青岛鲁渝能源科技有限公司 | Radio energy transmission system and its radio communication method |
| CN107124047B (en) * | 2017-06-27 | 2023-12-29 | 青岛鲁渝能源科技有限公司 | Wireless power transmission system and radio frequency communication method thereof |
| CN108667155A (en) * | 2018-06-08 | 2018-10-16 | 深圳森阳环保材料科技有限公司 | A kind of radio energy transmission system and control method |
| CN109450110A (en) * | 2018-12-18 | 2019-03-08 | 杭州电子科技大学 | A kind of underwater wireless transmission device of electric energy of coil coupling |
| CN109910648A (en) * | 2019-03-19 | 2019-06-21 | 江苏华骋科技有限公司 | Portable wireless charging device |
| CN110138063A (en) * | 2019-05-24 | 2019-08-16 | 青岛中科瑞信电力技术有限公司 | Match cognization system and method based on middle high-power wireless charging equipment |
| CN110138063B (en) * | 2019-05-24 | 2024-02-06 | 青岛中科瑞信无线充电技术有限公司 | Matching recognition system and method based on medium-high power wireless charging equipment |
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