CN106130194B - Radio energy transmission system and wireless power transmission control method - Google Patents

Radio energy transmission system and wireless power transmission control method Download PDF

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Publication number
CN106130194B
CN106130194B CN201610802889.4A CN201610802889A CN106130194B CN 106130194 B CN106130194 B CN 106130194B CN 201610802889 A CN201610802889 A CN 201610802889A CN 106130194 B CN106130194 B CN 106130194B
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transmitting
wireless
signal
receiving end
communication
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CN106130194A (en
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李聃
张超
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Qingdao Lu Yu Energy Technology Co Ltd
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Qingdao Lu Yu Energy Technology Co Ltd
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    • H04B5/79

Abstract

The present invention proposes a kind of radio energy transmission system and wireless power transmission control method, which, which can solve, is electrically charged the problem of equipment causes transmitting terminal or receiving end to burn under the conditions ofs quickly taking away or quickly putting back to equal.Whether the system can be entered or be moved away from the working region of wireless transmitting terminals with real-time detection wireless receiving end equipment, and the working frequency and output gain of transmitting end equipment can be controlled and adjusted according to the state of wireless receiving end equipment, instantaneous over-voltage or over-current state are avoided the occurrence of, the work that radio energy transmission system is safer, stable is made.The step of above-mentioned radio energy transmission system and control method include the judgement and control in corresponding wireless transmission and receiving module and transmitting terminal MCU to sampled signal and communication signal.

Description

Radio energy transmission system and wireless power transmission control method
Technical field
The invention belongs to electric energy transmission field more particularly to a kind of electric energy transmission systems using wireless radio transmission.
Background technique
Wireless power transmission is a kind of technology for being coupled by external electromagnetic field and carrying out electric energy transmission, and major advantage is not It needs to plug, it is easy to use;Electric spark will not be generated, can be used in inflammable and explosive industrial environment;It can be in water Middle carry out energy transmission, can be applied in the submerged applications such as marine settings.Radio energy transmission system mainly includes two parts: A part is energy transmission, and by transformation of electrical energy, electric energy is wirelessly transmitted to receiving end from transmitting terminal;Another part is communication The transmission of signal is mainly used for completing information and control between transmitting terminal and receiving device and interacts, guarantees whole system work Safety and stability.
Currently, be applied to radio energy transmission system communication mode there are mainly two types of:
One is multi-carrier modulation scheme is used, the modulation control information on the coupling coil of transmission energy and passes through modulation One-way or bi-directional communication of transmitting terminal and receiving end is realized with demodulator circuit.This method is mainly used in low power radio It is sensitive for the amplitude com parison of fundamental wave using the communication control mode of carrier modulation in energy Transmission system, work as wireless power transmission When the power or larger variation range of system, there are obvious limitations for this method;
Another method be using individual radio communication channel, by the way of radio communication, realize transmitting terminal with The two-way communication of receiving end.This scheme has since communication channel is independently of energy-transmission channel and controls more flexible, adaptation function The advantages that rate wider grade can be applied in powerful radio energy transmission system.But when using independent channel radio When believing channel control radio energy transmission system, if continuously quickly remove and quickly put back to receiving device, often go out The phenomenon that now burning wireless power transmission equipment.
The main reason for failure is generated when continuously quickly removing and quickly putting back to receiving device is: due to wireless radiofrequency The effective propagation path (generally tens centimetres to several meters) of communication system is usually all far longer than the work of wireless power transmission Distance (usually only several to more than ten centimetre).When receiving device is quickly taken away, energy transmission is already off, still Wireless communication is also in effective working distance at once (power down of usual receiving end will not carry out, and have one section of delay time). In this case, transmitting terminal also will continue to the status information returned according to receiving end, continues to tune up output gain, causes to emit The transient exciting current of end equipment is very big.When receiving device is quickly put back to again, transmitting terminal is exactly in maximum at this time Output gain, output end gain adjustment to normal level is needed certain delay time by communication control at this time, this transition Receiving end and transmitting end equipment are at instantaneous over-voltage or over-current state in the process, will lead to burning apparatus when serious.
Therefore, it in order to improve the stability and safety of system, needs effectively to solve the above problems.
Summary of the invention
In order to solve problem above, the present invention provides a kind of radio energy transmission systems and wireless power transmission to control Method, the invention are provided with proximity sensor in wireless transmitting terminals, realize the prison that wireless receiving end equipment is removed or is put into It surveys, the working frequency and output gain of transmitting end equipment is controlled and adjusted according to the state of wireless receiving end equipment, makes radio It can safer, the stable work of Transmission system.
In order to achieve the above object, the technical solution adopted by the present invention are as follows:
A kind of radio energy transmission system, wireless transmitting terminals and receivable wireless transmitting terminals including being connected to power grid The wireless receiving end of electric power signal, wireless transmitting terminals include the transmitting coil that can transmit radio energy, and can receive communication letter Number communication receipt module;Connect load outside wireless receiving end, emits the receiving coil of electric energy in transmitting coil including can receive, with And receiving coil can be exported electric energy and be converted into the communication transmitting module that communication signal is transmitted to communication receipt module, wireless transmission End further includes transmitting terminal current rectifying and wave filtering circuit, and the output end of transmitting terminal current rectifying and wave filtering circuit is connected with inverter circuit, transmitting coil The output end for connecting inverter circuit, be equipped in transmitting coil can the proximity of induced emission coil and receiving coil distance sense Device, proximity sensor form inductive signal according to transmitting coil and receiving coil distance, and transmitting coil is connected with transmitting terminal MCU, to receive the inductive signal of proximity sensor formation;Transmitting terminal MCU is electrically connected the output end of communication receipt module, to receive Communication signal in communication receipt module, transmitting terminal MCU be electrically connected the input terminal of inverter circuit, is converted in inverter circuit with controlling Ac frequency;Include in transmitting terminal MCU can receive inductive signal and communication signal judgment module and with judgment module electricity Control module even, judgment module judges wireless receiving end whether in working region according to inductive signal, such as in working region It is interior, then it converts communication signal to and judges that signal is sent to control module, control module is converted into control according to the judgement signal The working frequency of signal control wireless transmitting terminals;It in working region, then is formed to reset in judgment module if not and judges signal, and will The reset judges that signal is sent to control module, and control module judges that signal is converted into the control of control signal wirelessly according to the reset Transmitting terminal is in standby.
It is advanced optimized as of the invention, receiving coil is built-in with the induction that can enhance proximity sensor induction Object.
It is advanced optimized as of the invention, the receiving coil at wireless receiving end is connected with current rectifying and wave filtering circuit, rectification filter The output end of wave circuit connects output voltage sampling circuit, to acquire the output voltage after current rectifying and wave filtering circuit rectification, output electricity The output end of sample circuit is pressed to connect receiving end MCU, receiving end MCU connection communication transmitting module, the number letter after converting It number is transmitted to communication transmitting module and forms communication signal.
It is advanced optimized as of the invention, the output end of the current rectifying and wave filtering circuit at wireless receiving end is connected with exportable perseverance The output end of the voltage regulator circuit of constant voltage, voltage regulator circuit connects load.
It is advanced optimized as of the invention, proximity sensor is set in the transmitting coil of the avoidable interference of electromagnetic field At the heart.
The present invention also provides a kind of wireless power transmission control methods, using above-mentioned radio energy transmission system, including Following steps:
S1: starting radio energy transmission system;
S2: radio energy transmission system is standby with standby frequency;
S3: proximity sensor induction wireless transmitting terminal forms inductive signal at a distance from wireless receiving end, and will induction Signal is transmitted to transmitting terminal MCU;
S4: receiving end MCU judges whether wireless receiving end enters working region, if receiving end MCU judges wireless receiving End has entered to working region, then carries out S5;Otherwise, S3 is returned.
It is advanced optimized as of the invention, further comprising the steps of:
S5: by the communication initialization of radio energy transmission system, transmitting coil works according to predeterminated frequency range at this time;
S6: receiving coil receives the electric energy of transmitting coil transmission;
S7: the rectified filtered output voltage signal of electric energy of transmitting coil output is transferred to receiving end MCU by leading to Believe that transmitting module forms communication signal, communication receipt module receives the communication signal, and the communication signal is sent to transmitting terminal MCU;
S8: transmitting terminal MCU judges that wireless receiving end whether in working region, such as judges wireless receiving according to inductive signal End then executes S9 in working region;It is no, then execute S10;
S9: transmitting terminal MCU adjusts the working frequency of wireless transmitting terminals according to communication signal, then returns and executes S6;
S10: stopping energy transmission and resets the working frequency of wireless transmitting terminals, then returns and executes S2.
Compared with prior art, the advantages and positive effects of the present invention are:
1, radio energy transmission system of the invention, can real time monitoring wireless receiving device remove or be put into, and will The inductive signal is transmitted in transmitting terminal MCU, and transmitting terminal MCU is controlled according to inductive signal and signal of communication and adjustment transmitting terminal is set Standby working frequency and output gain, makes the work that radio energy transmission system is safer, stable.
2, radio energy transmission system of the invention has judgment module in transmitting terminal MCU, and then according to judgment module shape At control signal control wireless transmitting terminals working frequency, have the characteristics that intelligentized;
3, wireless power transmission control method of the invention, when wireless receiving end and wireless transmitting terminals are not in working region When, wireless transmitting terminals can be made to be in standby, it is more energy efficient, meanwhile, work is entered in wireless transmitting terminals and wireless receiving end When region, can be worked according to predeterminated frequency, not will lead to wireless receiving end and wireless transmission end equipment be in instantaneous over-voltage or Over-current state protects equipment.
Detailed description of the invention
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.
Specific embodiment
In the following, the present invention is specifically described by illustrative embodiment.It should be appreciated, however, that not into one In the case where step narration, element, structure and features in an embodiment can also be advantageously incorporated into other embodiments In.
It is the schematic diagram of radio energy transmission system in the present invention referring to Fig. 1.As shown in Figure 1, radio energy of the invention Transmission system, including being connected to the wireless transmitting terminals of power grid and the wireless receiving end of receivable wireless transmitting terminals electric power signal, Wireless transmitting terminals include the communication receipt module that can transmit the transmitting coil and receivable communication signal of radio energy.Wirelessly Connect load outside receiving end, emits the receiving coil of electric energy in transmitting coil including can receive, and receiving coil can be exported electricity It can be converted into the communication transmitting module that communication signal is transmitted to communication receipt module, pass through above-mentioned transmitting coil and receiving coil Transmission, it can be achieved that radio energy is set, and the receiving coil at this picks up the energy of transmitting coil by magnetic field coupling;And it is above-mentioned The setting for communicating transmitting module and communication receipt module realizes the communication transfer between wireless transmission end and wireless receiving end, The foundation of communication transfer is conducive to wireless transmitting terminals and is changed in due course according to the demand that wireless receiving end loads.
With continued reference to Fig. 1, wireless transmitting terminals further include the hair that the AC rectification transmitted in power grid can be formed to direct current End current rectifying and wave filtering circuit is penetrated, the output end of transmitting terminal current rectifying and wave filtering circuit is connected with the inversion that direct current can be converted to alternating current Circuit, transmitting coil connect the output end of inverter circuit, and being equipped in transmitting coil can induced emission coil and receiving coil distance Proximity sensor, proximity sensor according to transmitting coil and receiving coil distance formed inductive signal, transmitting coil connect It is connected to transmitting terminal MCU, to receive the inductive signal of proximity sensor formation;Transmitting terminal MCU is electrically connected the defeated of communication receipt module Outlet, to receive the communication signal in communication receipt module, transmitting terminal MCU is electrically connected the input terminal of inverter circuit, to control inversion The ac frequency converted in circuit;Include in transmitting terminal MCU can receive inductive signal and communication signal judgment module and The control module being electrically connected with judgment module, judgment module according to inductive signal judge wireless receiving end whether in working region, Such as in working region, then converts communication signal to and judge that signal is sent to control module, control module is believed according to the judgement Number it is converted into the working frequency of control signal control wireless transmitting terminals;If in working region, then do not formed and being resetted in judgment module Judge signal, and the reset is judged that signal is sent to control module, control module judges that signal is converted into control according to the reset Signal control wireless transmitting terminals processed are in standby.
In addition, being connected with driving circuit between transmitting terminal MCU and inverter circuit, the control formed in control module is believed Number inverter circuit is controlled by driving circuit.
It should be noted that heretofore described working region is centered on transmit coil, in vertical work appropriate Under the conditions of making distance and horizontal-shift, and the maximum functional region for guaranteeing system effectiveness and securely and reliably working.
In addition, above-mentioned proximity sensor is that state is removed or entered in energy cognitive radio receiving end, such as Hall magnetic field is passed Sensor, GMR giant magneto-resistance sensor, infrared sensor etc..In addition, being received to keep the induction of proximity sensor more preferable The inductor of enhancing proximity sensor sensing effect can be placed on coil.For example, as permanent magnet, ferromagnetic metal, Visual indicia etc..
Meanwhile electrical energy conversion circuit is provided in wireless transmitting terminals and wireless receiving end in the present invention.It illustrates: The receiving coil at wireless receiving end is connected with current rectifying and wave filtering circuit, the output end connection output voltage sampling electricity of current rectifying and wave filtering circuit Road, to acquire the output voltage after current rectifying and wave filtering circuit rectification, the output end of output voltage sampling circuit connects receiving end MCU, Receiving end MCU connection communication transmitting module, digital data transmission to the communication transmitting module after converting form communication signal.
Connect load outside wireless receiving end, which can be for charging load or for electric loading, generally when for load supplying, all Need to export burning voltage, therefore, the output end of the current rectifying and wave filtering circuit at wireless receiving end is connected with exportable constant voltage The output end of voltage regulator circuit, voltage regulator circuit connects load.
Preferred embodiment, the present invention in transmitting coil centre can be provided with through-hole, the through hole interference of electromagnetic field Weaker, proximity sensor may be disposed at the transmitting coil center of the avoidable interference of electromagnetic field.
Referring to fig. 2, Fig. 2 is the flow chart of wireless power transmission control method of the present invention.As shown in Fig. 2, nothing of the invention Line electric energy transfer control method, uses above-mentioned radio energy transmission system, comprising the following steps:
S1: starting radio energy transmission system;
S2: radio energy transmission system is standby with standby frequency, the standby frequency at this refer to system can in zero load peace The frequency to work entirely;
S3: proximity sensor induction wireless transmitting terminal forms inductive signal at a distance from wireless receiving end, and will induction Signal is transmitted to transmitting terminal MCU;
S4: receiving end MCU judges whether wireless receiving end enters working region according to inductive signal, if receiving end MCU Judge that wireless receiving end has entered to working region, then continues S5;Otherwise, S3 is returned.
Through the above steps, the initial shape in the working region that wireless receiving end moves into wireless transmitting terminals can be prevented There is instantaneous over-voltage or over-current state, and then burning apparatus in state.
In the present invention, can also be achieved in communication process, wireless receiving end into and out overcurrent or overvoltage protection, tool Body, further comprising the steps of:
S5: by the communication initialization of radio energy transmission system, transmitting coil works according to predeterminated frequency at this time, at this Communication initialization refers to that communication transmitting module and communication receiving module start transmission communication signal, and predeterminated frequency refers to using should The original frequency set when radio energy transmission system;
S6: receiving coil receives the electric energy of transmitting coil transmission;
S7: receiving end MCU is transferred to after the rectified filtering of electric energy of transmitting coil output and is formed by communicating transmitting module Communication signal, communication receipt module receives the communication signal, and the communication signal is sent to transmitting terminal MCU;
S8: transmitting terminal MCU judges that wireless receiving end whether in working region, such as judges wireless receiving according to inductive signal End then executes S9 in working region;It is no, then execute S10;
S9: transmitting terminal MCU adjusts the working frequency of wireless transmitting terminals according to communication signal, then returns and executes S6;
S10: stopping energy transmission and resets the working frequency of wireless transmitting terminals, then returns and executes S2.
Through the above steps, wireless power transmission control method of the present invention, is able to detect that whether wireless receiving end moves into Or the working region of wireless transmitting terminals is removed, it not will lead to wireless receiving end and the over-voltage of transient state or overcurrent occur in wireless transmitting terminals State, and then lead to burning for transmitting terminal or receiving device.

Claims (7)

1. a kind of radio energy transmission system, wireless transmitting terminals and receivable wireless transmitting terminals electricity including being connected to power grid The wireless receiving end of energy, wireless transmitting terminals include that can transmit the transmitting coil of radio energy and leading to for receivable communication signal Believe receiving module;Connect load outside wireless receiving end, emits the receiving coil of electric energy in transmitting coil including can receive, and can incite somebody to action Receiving coil output electric energy is converted into the communication transmitting module that communication signal is transmitted to communication receipt module, it is characterised in that:
Wireless transmitting terminals further include transmitting terminal current rectifying and wave filtering circuit, and the output end of transmitting terminal current rectifying and wave filtering circuit is connected with inversion electricity Road, transmitting coil connect the output end of inverter circuit, and being equipped in transmitting coil can induced emission coil and receiving coil position Proximity sensor, proximity sensor form inductive signal, proximity sensor according to transmitting coil and receiving coil distance It is connected with transmitting terminal MCU, to receive the inductive signal of proximity sensor formation;Transmitting terminal MCU is electrically connected communication receipt module Output end, to receive the communication signal in communication receipt module, transmitting terminal MCU is electrically connected the control terminal of inverter circuit, inverse to control The high-frequency ac electric frequency converted in power transformation road;
It include the control that can receive the judgment module of inductive signal and communication signal and be electrically connected with judgment module in transmitting terminal MCU Module, judgment module judges wireless receiving end whether in working region according to inductive signal, such as in working region, then will lead to News signal, which is converted into, judges that signal is sent to control module, and control module is converted into control signal control nothing according to the judgement signal The working frequency of line transmitting terminal, the working frequency are predeterminated frequency;It in working region, then is formed to reset in judgment module if not and be sentenced Break signal, and the reset is judged that signal is sent to control module, control module judges that signal is converted into control according to the reset Signal control wireless transmitting terminals are in standby.
2. radio energy transmission system according to claim 1, it is characterised in that: receiving coil, which is built-in with, can enhance proximity The inductor of sensor sensing intensity.
3. radio energy transmission system according to claim 1 or claim 2, it is characterised in that: the receiving coil at wireless receiving end connects It is connected to current rectifying and wave filtering circuit, the output end of current rectifying and wave filtering circuit connects output voltage sampling circuit, to acquire current rectifying and wave filtering circuit Output voltage after rectification, the output end of output voltage sampling circuit connect receiving end MCU, the transmitting of receiving end MCU connection communication Module, digital data transmission to the communication transmitting module after converting form communication signal.
4. radio energy transmission system according to claim 3, it is characterised in that: the current rectifying and wave filtering circuit at wireless receiving end Output end is connected with the voltage regulator circuit of exportable constant voltage, and the output end of voltage regulator circuit connects load.
5. radio energy transmission system according to claim 1 or 2 or 4, it is characterised in that: proximity sensor is set to can It avoids at the transmitting coil center of the interference of electromagnetic field.
6. a kind of wireless power transmission control method, special using any one of claim 1-5 radio energy transmission system Sign is: the following steps are included:
S1: starting radio energy transmission system;
S2: radio energy transmission system is standby with standby frequency;
S3: the position at proximity sensor induction wireless transmitting terminal and wireless receiving end forms inductive signal, and by inductive signal It is transmitted to transmitting terminal MCU;
S4: transmitting terminal MCU judges wireless receiving end whether in working region, if receiving end MCU has judged wireless receiving end Working region is entered to, then carries out S5;Otherwise, S3 is returned;
S5: by the communication initialization of radio energy transmission system, transmitting coil works according to predeterminated frequency at this time.
7. wireless power transmission control method according to claim 6, which is characterized in that further comprising the steps of:
S6: receiving coil receives the electric energy of transmitting coil transmission;
S7: the rectified filtered output voltage signal of electric energy of transmitting coil output is transferred to receiving end MCU, is sent out by communication It penetrates module and forms communication signal, communication receipt module receives the communication signal, and the communication signal is sent to transmitting terminal MCU;
S8: transmitting terminal MCU judges that wireless receiving end whether in working region, such as judges that wireless receiving end exists according to inductive signal In working region, then S9 is executed;It is no, then execute S10;
S9: transmitting terminal MCU adjusts the working frequency of wireless transmitting terminals according to communication signal, then returns and executes S6;
S10: stop electric energy and transmit and reset the working frequency of wireless transmitting terminals, then return and execute S2.
CN201610802889.4A 2016-09-05 2016-09-05 Radio energy transmission system and wireless power transmission control method Active CN106130194B (en)

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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
CN106410980B (en) * 2016-12-05 2018-10-26 青岛鲁渝能源科技有限公司 Radio energy transmission system and wireless power 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
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
CN106532978B (en) * 2016-12-05 2023-07-11 青岛鲁渝能源科技有限公司 Wireless power transmission system and wireless power transmission control method
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
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
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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